From 617344676b6e4eb6a18bfdace9295ee62ca7db10 Mon Sep 17 00:00:00 2001 From: Jonathan Perkin Date: Fri, 26 Sep 2014 15:50:56 +0100 Subject: [PATCH] Implement dash as a bootstrap shell. This is the 0.5.8 source, along with a number of patches applied that are required to satisfy a full bulk build using dash both as the config shell as well as the default shell executed by bmake. These patches are recorded in the patches directory as 'manual-*' to document our changes and also ensure that they aren't applied twice. A "--with-dash" bootstrap argument is added, allowing users to choose to use dash. For now shells/pdksh is still the default if there is no suitable shell available, except for SunOS which has been tested on both illumos and Solaris 9. --- bootstrap/bootstrap | 33 +- devel/bmake/Makefile | 12 +- shells/dash/Makefile | 31 +- shells/dash/PLIST | 1 + shells/dash/distinfo | 7 - shells/dash/files/COPYING | 56 + shells/dash/files/ChangeLog | 736 ++ shells/dash/files/INSTALL | 365 + shells/dash/files/Makefile.am | 1 + shells/dash/files/Makefile.in | 720 ++ shells/dash/files/aclocal.m4 | 971 +++ shells/dash/files/config.h.in | 190 + shells/dash/files/configure | 6223 +++++++++++++++++ shells/dash/files/configure.ac | 140 + shells/dash/files/depcomp | 708 ++ shells/dash/files/install-sh | 527 ++ shells/dash/files/missing | 331 + shells/dash/files/src/Makefile.am | 72 + shells/dash/files/src/Makefile.in | 721 ++ shells/dash/files/src/alias.c | 227 + shells/dash/files/src/alias.h | 52 + shells/dash/files/src/arith_yacc.c | 304 + shells/dash/files/src/arith_yacc.h | 89 + shells/dash/files/src/arith_yylex.c | 240 + shells/dash/files/src/bltin/bltin.h | 89 + shells/dash/files/src/bltin/printf.c | 463 ++ shells/dash/files/src/bltin/test.c | 547 ++ shells/dash/files/src/bltin/times.c | 30 + shells/dash/files/src/builtins.def.in | 94 + shells/dash/files/src/cd.c | 316 + shells/dash/files/src/cd.h | 35 + shells/dash/files/src/dash.1 | 2358 +++++++ shells/dash/files/src/dash.cat1 | 1593 +++++ shells/dash/files/src/error.c | 232 + shells/dash/files/src/error.h | 128 + shells/dash/files/src/eval.c | 1087 +++ shells/dash/files/src/eval.h | 63 + shells/dash/files/src/exec.c | 864 +++ shells/dash/files/src/exec.h | 77 + shells/dash/files/src/expand.c | 1729 +++++ shells/dash/files/src/expand.h | 83 + shells/dash/files/src/hetio.h | 22 + shells/dash/files/src/histedit.c | 494 ++ shells/dash/files/src/init.h | 39 + shells/dash/files/src/input.c | 532 ++ shells/dash/files/src/input.h | 66 + shells/dash/files/src/jobs.c | 1504 ++++ shells/dash/files/src/jobs.h | 109 + shells/dash/files/src/machdep.h | 47 + shells/dash/files/src/mail.c | 112 + shells/dash/files/src/mail.h | 38 + shells/dash/files/src/main.c | 346 + shells/dash/files/src/main.h | 54 + shells/dash/files/src/memalloc.c | 302 + shells/dash/files/src/memalloc.h | 100 + shells/dash/files/src/miscbltin.c | 528 ++ shells/dash/files/src/miscbltin.h | 31 + shells/dash/files/src/mkbuiltins | 119 + shells/dash/files/src/mkinit.c | 479 ++ shells/dash/files/src/mknodes.c | 448 ++ shells/dash/files/src/mksignames.c | 417 ++ shells/dash/files/src/mksyntax.c | 315 + shells/dash/files/src/mktokens | 95 + shells/dash/files/src/myhistedit.h | 46 + shells/dash/files/src/mystring.c | 257 + shells/dash/files/src/mystring.h | 63 + shells/dash/files/src/nodes.c.pat | 166 + shells/dash/files/src/nodetypes | 151 + shells/dash/files/src/options.c | 559 ++ shells/dash/files/src/options.h | 86 + shells/dash/files/src/output.c | 399 ++ shells/dash/files/src/output.h | 123 + shells/dash/files/src/parser.c | 1569 +++++ shells/dash/files/src/parser.h | 101 + shells/dash/files/src/redir.c | 459 ++ shells/dash/files/src/redir.h | 53 + shells/dash/files/src/shell.h | 104 + shells/dash/files/src/show.c | 406 ++ shells/dash/files/src/show.h | 45 + shells/dash/files/src/system.c | 199 + shells/dash/files/src/system.h | 109 + shells/dash/files/src/trap.c | 418 ++ shells/dash/files/src/trap.h | 57 + shells/dash/files/src/var.c | 712 ++ shells/dash/files/src/var.h | 175 + shells/dash/patches/manual-configure | 28 + shells/dash/patches/manual-src_Makefile.in | 46 + shells/dash/patches/manual-src_bltin_printf.c | 29 + shells/dash/patches/manual-src_jobs.c | 15 + shells/dash/patches/manual-src_main.c | 15 + shells/dash/patches/manual-src_mkbuiltins | 32 + shells/dash/patches/manual.README | 9 + shells/dash/patches/patch-src_mkbuiltins | 14 - 93 files changed, 35158 insertions(+), 29 deletions(-) delete mode 100644 shells/dash/distinfo create mode 100644 shells/dash/files/COPYING create mode 100644 shells/dash/files/ChangeLog create mode 100644 shells/dash/files/INSTALL create mode 100644 shells/dash/files/Makefile.am create mode 100644 shells/dash/files/Makefile.in create mode 100644 shells/dash/files/aclocal.m4 create mode 100644 shells/dash/files/config.h.in create mode 100755 shells/dash/files/configure create mode 100644 shells/dash/files/configure.ac create mode 100755 shells/dash/files/depcomp create mode 100755 shells/dash/files/install-sh create mode 100755 shells/dash/files/missing create mode 100644 shells/dash/files/src/Makefile.am create mode 100644 shells/dash/files/src/Makefile.in create mode 100644 shells/dash/files/src/alias.c create mode 100644 shells/dash/files/src/alias.h create mode 100644 shells/dash/files/src/arith_yacc.c create mode 100644 shells/dash/files/src/arith_yacc.h create mode 100644 shells/dash/files/src/arith_yylex.c create mode 100644 shells/dash/files/src/bltin/bltin.h create mode 100644 shells/dash/files/src/bltin/printf.c create mode 100644 shells/dash/files/src/bltin/test.c create mode 100644 shells/dash/files/src/bltin/times.c create mode 100644 shells/dash/files/src/builtins.def.in create mode 100644 shells/dash/files/src/cd.c create mode 100644 shells/dash/files/src/cd.h create mode 100644 shells/dash/files/src/dash.1 create mode 100644 shells/dash/files/src/dash.cat1 create mode 100644 shells/dash/files/src/error.c create mode 100644 shells/dash/files/src/error.h create mode 100644 shells/dash/files/src/eval.c create mode 100644 shells/dash/files/src/eval.h create mode 100644 shells/dash/files/src/exec.c create mode 100644 shells/dash/files/src/exec.h create mode 100644 shells/dash/files/src/expand.c create mode 100644 shells/dash/files/src/expand.h create mode 100644 shells/dash/files/src/hetio.h create mode 100644 shells/dash/files/src/histedit.c create mode 100644 shells/dash/files/src/init.h create mode 100644 shells/dash/files/src/input.c create mode 100644 shells/dash/files/src/input.h create mode 100644 shells/dash/files/src/jobs.c create mode 100644 shells/dash/files/src/jobs.h create mode 100644 shells/dash/files/src/machdep.h create mode 100644 shells/dash/files/src/mail.c create mode 100644 shells/dash/files/src/mail.h create mode 100644 shells/dash/files/src/main.c create mode 100644 shells/dash/files/src/main.h create mode 100644 shells/dash/files/src/memalloc.c create mode 100644 shells/dash/files/src/memalloc.h create mode 100644 shells/dash/files/src/miscbltin.c create mode 100644 shells/dash/files/src/miscbltin.h create mode 100644 shells/dash/files/src/mkbuiltins create mode 100644 shells/dash/files/src/mkinit.c create mode 100644 shells/dash/files/src/mknodes.c create mode 100644 shells/dash/files/src/mksignames.c create mode 100644 shells/dash/files/src/mksyntax.c create mode 100644 shells/dash/files/src/mktokens create mode 100644 shells/dash/files/src/myhistedit.h create mode 100644 shells/dash/files/src/mystring.c create mode 100644 shells/dash/files/src/mystring.h create mode 100644 shells/dash/files/src/nodes.c.pat create mode 100644 shells/dash/files/src/nodetypes create mode 100644 shells/dash/files/src/options.c create mode 100644 shells/dash/files/src/options.h create mode 100644 shells/dash/files/src/output.c create mode 100644 shells/dash/files/src/output.h create mode 100644 shells/dash/files/src/parser.c create mode 100644 shells/dash/files/src/parser.h create mode 100644 shells/dash/files/src/redir.c create mode 100644 shells/dash/files/src/redir.h create mode 100644 shells/dash/files/src/shell.h create mode 100644 shells/dash/files/src/show.c create mode 100644 shells/dash/files/src/show.h create mode 100644 shells/dash/files/src/system.c create mode 100644 shells/dash/files/src/system.h create mode 100644 shells/dash/files/src/trap.c create mode 100644 shells/dash/files/src/trap.h create mode 100644 shells/dash/files/src/var.c create mode 100644 shells/dash/files/src/var.h create mode 100644 shells/dash/patches/manual-configure create mode 100644 shells/dash/patches/manual-src_Makefile.in create mode 100644 shells/dash/patches/manual-src_bltin_printf.c create mode 100644 shells/dash/patches/manual-src_jobs.c create mode 100644 shells/dash/patches/manual-src_main.c create mode 100644 shells/dash/patches/manual-src_mkbuiltins create mode 100644 shells/dash/patches/manual.README delete mode 100644 shells/dash/patches/patch-src_mkbuiltins diff --git a/bootstrap/bootstrap b/bootstrap/bootstrap index fe808bfbd4666..83cca3082ea42 100755 --- a/bootstrap/bootstrap +++ b/bootstrap/bootstrap @@ -74,6 +74,7 @@ usage="Usage: $0 "' [ --sysconfdir ] [ --unprivileged | --ignore-user-check ] [ --varbase ] + [ --with-dash ] [ --workdir ] ' @@ -410,6 +411,8 @@ make_jobs=1 mk_fragment= quiet=no +need_dash=no + while [ $# -gt 0 ]; do case $1 in --workdir=*) wrkdir=`get_optarg "$1"` ;; @@ -455,6 +458,7 @@ while [ $# -gt 0 ]; do binary_macpkg="$2"; shift ;; --make-jobs=*) make_jobs=`get_optarg "$1"` ;; --make-jobs) make_jobs="$2"; shift ;; + --with-dash) need_dash=yes ;; --full) full=yes ;; --quiet) quiet=yes ;; --help) echo "$usage"; exit ;; @@ -826,11 +830,11 @@ SunOS) else need_sed=yes fi - if [ -x "/usr/bin/bash" ]; then + if [ "${need_dash}" = "no" -a -x "/usr/bin/bash" ]; then bootstrap_sh=${SH:-/usr/bin/bash} bootstrap_sh_set=set else - need_ksh=yes + need_dash=yes fi set_opsys=no idprog="/usr/xpg4/bin/id" @@ -872,6 +876,12 @@ yes) ;; esac +# dash and ksh are mutually exclusive, prefer dash as it currently has to be +# explicitly enabled. +case "$need_dash" in +yes) need_ksh=no ;; +esac + case "$quiet" in yes) configure_quiet_flags="--quiet" @@ -1142,6 +1152,22 @@ echo_msg "Building libnbcompat" copy_src $pkgsrcdir/pkgtools/libnbcompat/files libnbcompat run_cmd "(cd $wrkdir/libnbcompat; $shprog ./configure $configure_quiet_flags -C --prefix=$prefix --infodir=$infodir --mandir=$mandir --sysconfdir=$sysconfdir --enable-bsd-getopt --enable-db && $bmake -j$make_jobs)" +# bootstrap dash if necessary +case "$need_dash" in +yes) echo_msg "Bootstrapping dash" + copy_src $pkgsrcdir/shells/dash/files dash + test -n "$CC" || CC=gcc # default to gcc if no compiler is specified + run_cmd "(cd $wrkdir/dash && env $BSTRAP_ENV MAKE=$bmake $shprog ./configure $configure_quiet_flags --prefix=$prefix --infodir=$infodir --mandir=$mandir --sysconfdir=$sysconfdir && env MAKE=$bmake $bmake -j$make_jobs)" + run_cmd "$install_sh -c -o $user -g $group -m 755 $wrkdir/dash/src/dash $wrkdir/bin/dash" + echo "TOOLS_PLATFORM.sh?= $prefix/bin/dash" >> ${TARGET_MKCONF} + echo "TOOLS_PLATFORM.sh?= $wrkdir/bin/dash" >> ${BOOTSTRAP_MKCONF} +# Now rebootstrap bmake for dash + echo_msg "Rebootstrapping bmake for dash" + bmakexargs="$bmakexargs --with-defshell=$wrkdir/bin/dash" + bootstrap_bmake + ;; +esac + # bootstrap ksh if necessary case "$need_ksh" in yes) echo_msg "Bootstrapping ksh" @@ -1286,6 +1312,9 @@ yes) fi ;; esac +case "$need_dash" in +yes) build_package "shells/dash";; +esac case "$need_ksh" in yes) build_package "shells/pdksh";; esac diff --git a/devel/bmake/Makefile b/devel/bmake/Makefile index 86daf07e9f847..026b86e466b06 100644 --- a/devel/bmake/Makefile +++ b/devel/bmake/Makefile @@ -32,11 +32,17 @@ CONFIGURE_ARGS+= --sysconfdir=${PKG_SYSCONFDIR} .include "../../mk/bsd.prefs.mk" -.if ${OPSYS} == "SunOS" && exists(/usr/bin/bash) -CONFIGURE_ARGS+= --with-defshell=/usr/bin/bash -.elif ${OPSYS} == "SunOS" || ${OPSYS} == "OSF1" || ${OPSYS} == "IRIX" || ${OPSYS} == "AIX" +# Use the shell we bootstrapped with or the default for this platform. The +# pattern matching here isn't ideal but due to the bootstrap workdir there's +# no way to do a full path match. +.if !empty(TOOLS_PLATFORM.sh:M?*/bin/dash) +DEPENDS+= dash-[0-9]*:../../shells/dash +CONFIGURE_ARGS+= --with-defshell=${PREFIX}/bin/dash +.elif !empty(TOOLS_PLATFORM.sh:M?*/bin/pdksh) DEPENDS+= pdksh-[0-9]*:../../shells/pdksh CONFIGURE_ARGS+= --with-defshell=${PREFIX}/bin/pdksh +.else +CONFIGURE_ARGS+= --with-defshell=${TOOLS_PLATFORM.sh} .endif .if ${OPSYS} == "Interix" MAKE_ENV+= XDEFS=-DUSE_SELECT diff --git a/shells/dash/Makefile b/shells/dash/Makefile index b3a92d7df0be5..fdf1cc1486833 100644 --- a/shells/dash/Makefile +++ b/shells/dash/Makefile @@ -4,14 +4,39 @@ DISTNAME= dash-0.5.8 CATEGORIES= shells MASTER_SITES= http://gondor.apana.org.au/~herbert/dash/files/ +MASTER_SITES= # maintained locally +DISTFILES= # empty MAINTAINER= cheusov@NetBSD.org HOMEPAGE= http://gondor.apana.org.au/~herbert/dash/ COMMENT= Debian Almquist shell, POSIX-compliant shell faster than bash LICENSE= modified-bsd AND gnu-gpl-v2 -GNU_CONFIGURE= yes -USE_TOOLS+= gmake -PKG_SHELL= bin/dash +BOOTSTRAP_PKG= yes +NO_CHECKSUM= yes + +GNU_CONFIGURE= yes + +PKG_SHELL= bin/dash + +do-extract: + ${CP} -R ${FILESDIR} ${WRKSRC} + +INSTALLATION_DIRS= bin ${PKGMANDIR}/cat1 ${PKGMANDIR}/man1 + +.include "../../mk/bsd.prefs.mk" + +do-install: + ${INSTALL_PROGRAM} ${WRKSRC}/src/dash ${DESTDIR}${PREFIX}/bin/dash + ${INSTALL_MAN} ${WRKSRC}/src/dash.1 ${DESTDIR}${PREFIX}/${PKGMANDIR}/man1/dash.1 +.if !empty(MANINSTALL:Mcatinstall) +. if defined(CATMAN_SECTION_SUFFIX) && !empty(CATMAN_SECTION_SUFFIX:M[Yy][Ee][Ss]) + ${INSTALL_MAN} ${WRKSRC}/src/dash.cat1 \ + ${DESTDIR}${PREFIX}/${PKGMANDIR}/cat1/dash.1 +. else + ${INSTALL_MAN} ${WRKSRC}/src/dash.cat1 \ + ${DESTDIR}${PREFIX}/${PKGMANDIR}/cat1/dash.0 +. endif +.endif .include "../../mk/bsd.pkg.mk" diff --git a/shells/dash/PLIST b/shells/dash/PLIST index 4865c2d3c8ca0..25a674e8a90c2 100644 --- a/shells/dash/PLIST +++ b/shells/dash/PLIST @@ -1,3 +1,4 @@ @comment $NetBSD: PLIST,v 1.1.1.1 2009/07/26 21:27:49 rillig Exp $ bin/dash +man/cat1/dash.0 man/man1/dash.1 diff --git a/shells/dash/distinfo b/shells/dash/distinfo deleted file mode 100644 index 7b75d076da9d7..0000000000000 --- a/shells/dash/distinfo +++ /dev/null @@ -1,7 +0,0 @@ -$NetBSD: distinfo,v 1.6 2015/11/02 23:00:34 agc Exp $ - -SHA1 (dash-0.5.8.tar.gz) = cd058935bba545427caa375337afe8a6309477d2 -RMD160 (dash-0.5.8.tar.gz) = 2e8aabcbbb2802061a4a53fdfa63c414ce8c963f -SHA512 (dash-0.5.8.tar.gz) = 3dc42d3503b33c50b62c0f9104c0e41c4e8fa7490ba72bc09213fcc894d6fd92b9688c58389acf8b538b08f8e9cc179f0bf5572e22175d1960f04554594237b8 -Size (dash-0.5.8.tar.gz) = 223028 bytes -SHA1 (patch-src_mkbuiltins) = 54f46f67653472d7bd5c8064929ef08da49a2b92 diff --git a/shells/dash/files/COPYING b/shells/dash/files/COPYING new file mode 100644 index 0000000000000..37f8189c02b05 --- /dev/null +++ b/shells/dash/files/COPYING @@ -0,0 +1,56 @@ +Copyright (c) 1989-1994 + The Regents of the University of California. All rights reserved. +Copyright (c) 1997 Christos Zoulas. All rights reserved. +Copyright (c) 1997-2005 + Herbert Xu . All rights reserved. + +This code is derived from software contributed to Berkeley by Kenneth Almquist. + + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +3. Neither the name of the University nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. + +mksignames.c: + +This file is not directly linked with dash. However, its output is. + +Copyright (C) 1992 Free Software Foundation, Inc. + +This file is part of GNU Bash, the Bourne Again SHell. + +Bash is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +Bash is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License with +your Debian GNU/Linux system, in /usr/share/common-licenses/GPL, or with the +Debian GNU/Linux hello source package as the file COPYING. If not, +write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, +Boston, MA 02111 USA. diff --git a/shells/dash/files/ChangeLog b/shells/dash/files/ChangeLog new file mode 100644 index 0000000000000..a466a7f90e1d9 --- /dev/null +++ b/shells/dash/files/ChangeLog @@ -0,0 +1,736 @@ +2014-09-26 Herbert Xu + + * Small optimisation of command -pv change. + * Set command -p path to /usr/sbin:/usr/bin:/sbin:/bin. + * Change "characters" for printf precision to "bytes". + * Release 0.5.8. + +2014-09-26 Jonathan Nieder + + * Clarify "trap '' signals" syntax in manual page. + +2014-09-26 Adam Buchbinder + + * Clarify that 0 and EXIT are both acceptable for exit traps. + +2014-09-26 Harald van Dijk + + * command: allow combining -p with -v. + * getjob: Fix off-by-one error for multiple of four job numbers + +2013-08-23 Herbert Xu + + * Propagate EXP_QPAT in subevalvar. + * Initialise OPTIND after importing environment. + * Fixed argument parsing crash in test. + +2013-03-12 Peter Rosin + + * Add newline when tracing in poplocalvars. + +2013-01-10 Jérémie Courrèges-Anglas + + * Markup fixes in manual for mandoc 1.12.1. + +2012-12-03 Harald van Dijk + + * Use PRIdMAX instead of %j in printf. + +2012-07-20 Kimo Rosenbaum + + * Fix typo for wait in manual. + +2012-06-09 Christoph Mathys + + * Add support for ulimit -r. + +2012-03-11 Jim Meyering + + * Avoid overflow for very long variable name. + $ perl -le 'print "v"x(2**31+1) ."=1"' | dash + +2012-02-25 Herbert Xu + + * Sanitise environment variable names on entry. + +2011-08-17 David S. Miller + + * Allow building without LINEO support. + * Add top-level autogen.sh. + +2011-07-26 Harald van Dijk + + * Avoid imaxdiv when only one of the results is wanted. + +2010-07-09 maximilian attems + + * Fix klibc DEBUG compilation. + +2011-07-09 Herbert Xu + + * Merge SKIPFUNC/SKIPFILE and only clear SKIPFUNC when leaving dotcmd. + +2011-07-08 Herbert Xu + + * Release 0.5.7. + +2011-07-07 Herbert Xu + + * Optimize dash -c "command" to avoid a fork. + * Eliminate unnecessary promotion in echocmd. + +2011-05-25 Jim Meyering + + * Avoid using undefined handler. + +2011-05-23 Jim Meyering + + * Avoid gcc warning: variable 'oldstackp' set but not used. + * Avoid clang warning about dead store to "size". + +2011-05-22 Jonathan Nieder + + * Make outc an inline function. + +2011-05-02 Kalle Olavi Niemitalo + + * Remove spurious space in descriptions of PS1, PS2, PS4. + +2011-04-10 Jonathan Nieder + + * Remove unused EV_BACKCMD flag. + +2011-03-15 Herbert Xu + + * Fix clobbering of checkkwd. + +2011-03-15 Jonathan Nieder + + * Free IFS state after here document expansion. + * Use va_copy when reusing a va_list. + +2011-03-15 Harald van Dijk + + * Let funcnode refer to a function definition, not its first command. + * Improve LINENO support. + +2011-03-15 Brian Koropoff + + * Port to Solaris. + +2011-03-11 Herbert Xu + + * Fix backslash handling in read(1). + +2011-03-10 Jonathan Nieder + + * Dotcmd should exit with zero when doing nothing. + +2011-03-10 Herbert Xu + + * Fix CTLESC clobbering by read(1). + +2011-03-10 Brian Koropoff + + * Port to AIX. + +2011-03-10 Jilles Tjoelker + + * Replace GPL noclobberopen code with the FreeBSD version. + * Do not split the result of tilde expansion. + +2010-11-28 Maciej Żenczykowski + + * Mark status as volatile in exitshell. + +2010-11-28 Jonathan Nieder + + * Use EXEXIT in place of EXEXEC. + * Stop documenting EXSHELLPROC. + +2010-11-28 Gerrit Pape + + * Use exit status 127 when the script to run does not exist. + +2010-11-28 Philipp Weis + + * Document optional open parenthesis for case patterns. + +2010-11-28 Herbert Xu + + * Fixed trap/return regression due to SKIPEVAL removal. + * Allow the originator of EXERROR to set the exit status. + * Free IFS state in evalbackcmd. + +2010-10-18 Herbert Xu + + * Fix ifsfirst/ifslastp leak in casematch. + +2010-10-07 Herbert Xu + + * Fix EXEXEC status clobbering. + +2010-09-08 Herbert Xu + + * Fix ifsfirst/ifslastp leak. + * Fix trailing field bug in read(1). + +2010-09-08 maximilian attems + + * Debug compile fix. + +2010-09-08 Jilles Tjoelker + + * Fix varinit ordering that broke fc. + +2010-07-06 Gerrit Pape + + * Check exit for eval NSUBSHELL. + +2010-07-06 Herbert Xu + + * Fix loss of variables when hash collides. + * Removed dead code for eval NPIPE. + +2010-06-28 Gerrit Pape + + * Don't clear eflag in evalbackcmd. + +2010-05-29 Herbert Xu + + * Continue after EINTR in read(1) with no pending signals. + +2010-05-27 Jilles Tjoelker + + * Force fork if any trap is set, not just on EXIT. + * Fix corruption of redirections with byte 0x81. + +2010-05-27 Herbert Xu + + * Fix poplocalvar on abnormal exit from function. + * Do not poplocalvars prematurely on regular utilities. + * Move null redirect checks into caller. + * Fix popredir on abnormal exit from built-in. + * Fix wait regression where it does not wait for all jobs. + +2010-05-26 Herbert Xu + + * Replace cmdenviron with localvars. + +2010-05-25 Herbert Xu + + * Fix poplocalvar leak. + * Move unsetvar functionality into setvareq. + +2010-05-24 Herbert Xu + + * Add localvars nesting, local now fails outside functions. + +2010-05-03 Gerrit Pape + + * Fix command -- crash. + +2010-04-15 H. Peter Anvin + + * Fix for job control off warning. + +2010-04-02 Herbert Xu + + * Use faccessat if available. + +2010-04-02 Herbert Xu + + * Make trap signal name/number errors non-fatal. + * Release 0.5.6. + +2010-04-02 maximilian attems + + * Use TMPDIR in mkbuiltins. + +2010-03-10 Jilles Tjoelker + + * Fix logical or result value. + +2010-03-09 Herbert Xu + + * Fix binary operator parsing. + +2009-11-26 Herbert Xu + + * Fix off-by-one recordregion in readcmd. + +2009-09-28 Jim Meyering + + don't read-uninitialized for \177 in a here-doc + A DEL (0177, dec 127) byte in a here-document would cause dash to + access uninitialized memory at the end of one of the syntax.c tables, + since those tables are sized to accommodate a maximum index of + BASESYNTAX + 126. Make the generated tables one byte larger. + printf ':<<\\E\n\200y\nE'|./dash + * src/mksyntax.c (filltable): Use 258, not 257 as the size, + so that BASESYNTAX(=130) + 127 is a valid index. + (print): Likewise. + Don't emit explicit array dimension in declaration. + +2009-08-31 Eric Blake + + * Avoid compiler warnings on isdigit. + +2009-08-31 Matthew Burgess + + * Add another missing LC_COLLATE to mkbuiltins. + +2009-08-31 Herbert Xu + + * Fix NUL termination in readcmd. + * Lookup PWD after going through CDPATH. + +2009-08-11 Herbert Xu + + * Pass EV_TESTED into evalcmd. + * Revert SKIPEVAL into EXEXIT. + +2009-08-11 Rocky Bernstein + + * Add preliminary LINENO support. + +2009-08-11 Stefan Potyra + + * Honor tab as IFS whitespace when splitting fields in readcmd. + +2009-06-30 Herbert Xu + + * Do not truncate file for FROMTO redirection. + +2009-06-27 Herbert Xu + + * Fix quoted pattern patch breakage. + +2009-05-23 Herbert Xu + + * Fix incorrect savefd conversions. + +2009-02-22 Herbert Xu + + * Fix dowait signal race. + * Remove EXSIG. + * Do not close stderr when /dev/tty fails to open. + * Allow newlines after var name in for statements. + * Use CHKNL to parse case statements. + +2009-02-22 Gerrit Pape + + * Update manual page to differentiate dash from ash. + +2009-01-14 Herbert Xu + + * Add arith_yacc.h to dash_SOURCES. + * Release 0.5.5.1. + +2009-01-13 Herbert Xu + + * Release 0.5.5. + +2009-01-13 Mark Mentovai + + * Fixed build on OS X. + +2008-12-26 Aleksey Cheusov + + * Fixed build on NetBSD. + +2008-10-17 Herbert Xu + + * Removed obsolete for loop syntax in manual. + +2008-08-05 Herbert Xu + + * Fixed getcwd build error for the non-glibc case. + +2008-06-13 Gerrit Pape + + * Added missing right parenthesis in manual page. + +2008-06-13 Herbert Xu + + * Fixed 3,4-argument cases for test per POSIX. + * Made aexpr/oexpr non-recursive. + * Made t_lex reentrant. + * Made setinputfd static. + * Expand ENV before using it. + * Added support for -l. + +2008-05-19 Herbert Xu + + * Fixed non-leading slash treatment in expmeta. + +2008-05-07 Gerrit Pape + + * Fixed lexical error in arithmetic expansion of & and |. + +2008-05-03 Dan McGee + + * Fixed klibc/klcc build problems. + * Added gitignore. + +2008-05-03 Herbert Xu + + * Fixed _PATH_BSHELL warning. + * Test __GLIBC__ instead of _GNU_SOURCE. + * Restored warning when getcwd fails. + * Set default exvwarning2 arg0 for errors during early initialisation. + * Use uninitialized_var to silence bogus warnings. + +2008-05-02 Herbert Xu + + * Restored non-glibc getcwd support. + +2008-03-07 Larry Doolittle + + * Fix cmdtxt crash on if statements. + +2008-01-01 Herbert Xu + + * Fix slash treatment in expmeta. + +2007-12-27 Herbert Xu + + * Add FAKEEOFMARK for expandstr. + * Do not show prompts in expandstr. + +2007-12-23 Gerrit Pape + + * If imaxdiv() isn't available, use / and % operators. + +2007-12-23 Richard M Kreuter + + * Add set +o support. + +2007-12-23 Steve Langasek + + * Fixed bad pointer arithmetic in evalcommand. + +2007-11-11 Herbert Xu + + * Removed noexpand/length check on eofmark. + * Removed herefd hack. + * Expand here-documents in the current shell environment. + +2007-10-20 Herbert Xu + + * Added configure --enable-glob and --enable-fnmatch options. + * Fix here-doc corruption. + +2007-10-17 Herbert Xu + + * Replace shared illnum message by badnum function. + +2007-10-17 Oleg Verych + + * Disallow completely blank strings in non-arithmetic context. + +2007-10-15 Herbert Xu + + * Fixed execing of scripts with no hash-bang. + +2007-10-11 Herbert Xu + + * Add assignment support in arithmetic expansions. + * Size optimisations in arithmetic lexer. + * Add likely flags in expari. + * Use setvarint to set OPTIND. + +2007-10-08 Herbert Xu + + * Report substition errors at expansion time. + +2007-10-06 Herbert Xu + + * Add pushstackmark. + * Treat OPTIND=0 in the same way as OPTIND=1. + * Remove setvarsafe. + * Use intmax_t arithmetic in test. + +2007-10-05 Herbert Xu + + * Made grabstackblock an inline wrapper for stalloc. + +2007-10-04 Herbert Xu + + * Fix parsing of ${##1}. + * Size optimisations in parameter expansion parser. + +2007-10-04 Alexey Gladkov + + * Add --enable-static option to configure. + +2007-09-26 Herbert Xu + + * Recognise here-doc delimiters terminated by EOF. + +2007-09-26 Roy Marples + + * Refresh stack pointers after makestrspace in _rmescapes. + +2007-09-25 Gerrit Pape + + * Clarify description of -nt, -ot options to test builtin. + * Clarify syntax of the for command. + +2007-09-25 Herbert Xu + + * Do not expand tilde in parameter expansion within quotes. + * Move parse-time quote flag detection to run-time. + +2007-09-24 Herbert Xu + + * Do not quote back slashes in parameter expansions outside quotes. + * Perform tilde expansion in all parameter expansion words. + * Remove superfluous arinest test in CENDQUOTE. + * Remove superfluous arinest test for dqvarnest. + * Remove superfluous dblquote settings when ending arith. + * Remove arithmetic expansion collapsing at parse time. + +2007-09-22 Oleg Verych + + * White space fixes for test(1). + * Use direct comparison instead of strcmp in test(1). + +2007-09-22 Herbert Xu + + * Move flushall to the point just before _exit. + +2007-09-21 Denis Vlasenko + + * Restore foreground process group on exit. + +2007-07-12 Herbert Xu + + * Release 0.5.4. + +2007-05-12 Herbert Xu + + * Fix redirect restore on closed file descriptors. + * Size optimisations in redir.c. + +2007-05-06 Herbert Xu + + * Removed unnecessary inclusion of redir.h from parser.c. + * Invoke sh_error on error in copyfd. + * Use dup2 instead of copyfd in evalbackcmd. + * Replace copyfd by savefd and dup2. + * Removed redundant CLOEXEC calls. + +2007-05-05 Herbert Xu + + * Fixed typo in parser.h comment. + +2007-04-28 Dan Nicholson + + * Set LC_COLLATE for sort in mkbuiltin. + +2006-10-22 Gerrit Pape + + * Fixed command -v segmentation fault. + +2006-10-13 Alexey Gladkov + + * Check return code for getgroups and fwrite. + +2006-10-04 Herbert Xu + + * Fixed inverted char class matching. + +2006-05-23 Alexey Gladkov + + * Added --with-libedit option to configure. + +2006-03-29 Herbert Xu + + * Removed useless parsebackquote flag. + * Use alloca to get rid of setjmp in parse.c. + * Only use signed char for syntax arrays. + +2006-01-12 Herbert Xu + + * Fixed eval exit status with empty arguments. + +2005-11-26 Herbert Xu + + * Release 0.5.3. + +2005-11-14 Herbert Xu + + * Fix \c spillage across echo commands. + +2005-11-13 Herbert Xu + + * Remove unnecessary truncation in _STPUTC. + * Always call conv_escape_str in echocmd. + +2005-11-04 Herbert Xu + + * Use mktemp if tempfile is not available. + +2005-10-30 Herbert Xu + + * Fixed support for disabling job control. + +2005-10-29 Herbert Xu + + * Updated BSD licence to 3-clause version per NetBSD. + * Updated copyright. + * Removed CVS IDs and inclusion of sys/cdefs.h. + * Removed use of __P from error.h. + * Use bsd_signal if it exists and signal does not. + * Stop using sysexits.h in commandcmd. + * Use stat if stat64 does not exist. + * Added default implementation of bsearch. + * Added getpwhome as a wrapper for getpwnam. + * Fixed gcc 4.0 compilation problems. + * Added missing system.h inclusion for mempcpy. + * Added default implementation of strsignal. + * Added default implementation of killpg. + * Disable ulimit if there is no getrlimit. + * Disable histcmd completely when SMALL is defined. + * Added default definition for SSIZE_MAX. + * Removed standalone/csh support from printf. + * Added dummy strtod implementation. + * Removed standalone/csh support from test. + * Added dummy sysconf implementation. + * Include system.h for stpcpy in nodes.c. + * Added out-of-line ctypes functions for klibc. + * Fixed fallback stpcpy implementation. + +2005-10-26 Herbert Xu + + * Size optimisations in preadbuffer(). + +2005-10-01 Herbert Xu + + * Skip NUL characters properly in input.c. + +2005-03-28 Herbert Xu + + * Removed some unnecessary inclusions of input.h. + * Removed unnecessary inclusion of main.h from eval.c. + * Removed unnecessary inclusion of eval.h from parser.c. + * Generalise setinputfile for use in read_profile/readcmdfile. + * Handle SKIPEVAL in read_profile by exiting. + * Let evaltree handle traps from cmdloop. + * Reset evalskip after minusc is executed. + * Stop executing traps once SKIPEVAL is seen. + * Only handle each signal once in dotrap. + +2005-03-25 Gerrit Pape + + * Add trailing equal sign in setvar for variables set to null. + +2005-03-25 Herbert Xu + + * Cleaned up src/Makefile.am. + * Get rid of duplicate -g -O2 in CFLAGS. + * Eliminate first null termination in setvar. + * Turn evalskip into a bit field. + +2005-03-25 Gilles Chanteperdrix + + * Fixed support for cross-compilation. + +2005-03-03 Herbert Xu + + * Removed qflag. + * Removed redundant setstackmark from dotcmd. + * Do not clobber exit status in dotcmd. + +2005-03-02 Herbert Xu + + * Renamed symbols to avoid conflict with libc. + * Optimisations in bltin/test.c. + +2005-02-28 Herbert Xu + + * Replaced EXEVAL with SKIPEVAL. + * Update funcnest atomically. + * Only set skipcount for break and continue. + * Removed expcmd built-in. + * Normalise input in likely/unlikely macros. + +2005-02-28 A Costa + + * Corrected that/than typo in manual page. + +2005-02-25 A Costa + + * Corrected grammar in manual page. + +2005-02-25 Herbert Xu + + * Changed boolean rootshell into shlvl counter. + * Catch set -e exits within built-in commands. + * Size optimisations with setjmp in main(). + * Only reread exitstatus on EXEXIT in exitshell. + * Eliminated global exerrno. + +2005-01-31 Gerrit Pape + + * Release 0.5.2. + * Corrected manual entry about ENV and non-interactive shells. + +2004-11-24 Gerrit Pape + + * Spell behaviour consistently in manual page. + +2004-11-23 A Costa + + * Fixed spelling errors in manual page. + +2004-08-21 Herbert Xu + + * Size optimisations around varvalue() in src/expand.c. + * Fixed signed char promotion in src/expand.c. + +2004-08-18 Herbert Xu + + * Fixed $@ expansion when leading argument is null in src/expand.c. + +2004-08-07 Herbert Xu + + * Allow negative pid argument to kill(1) in src/jobs.c. + +2004-08-04 Herbert Xu + + * Fixed cd - when OLDPWD is unset in src/cd.c. + +2004-07-09 Herbert Xu + + * Include system.h (Gerrit Pape): + . src/mystring.c + . src/var.c + . src/bltin/printf.c + +2004-07-03 Herbert Xu + + * Release 0.5.1. + * Use automake and autoconf. + * Include stdlib.h for exit(3) in src/mksyntax.c. + +2004-06-29 Herbert Xu + + * Added sigclearmask. + * Removed hack for _setjmp/_longjmp. + * Added default implementations of mempcpy/stpcpy/strchrnul. + * Use strtoll/strtoull if strtoimax/strtoumax are unavailable. + * Removed sh.1 to dash.1. + +2004-05-28 Herbert Xu + + * Fixed vstype trim operator ordering in cmdputs. + * Fixed quote for CTLENDVAR in cmdputs. + * Fixed VSLENGTH crash in cmdputs. + * Turned vstype back into a 2-d array of chars. + * Added POSIX character class support in pmatch. + +For older ChangeLogs see ChangeLog.O. + +ChangeLog ends here diff --git a/shells/dash/files/INSTALL b/shells/dash/files/INSTALL new file mode 100644 index 0000000000000..7d1c323beae76 --- /dev/null +++ b/shells/dash/files/INSTALL @@ -0,0 +1,365 @@ +Installation Instructions +************************* + +Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005, +2006, 2007, 2008, 2009 Free Software Foundation, Inc. + + Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. This file is offered as-is, +without warranty of any kind. + +Basic Installation +================== + + Briefly, the shell commands `./configure; make; make install' should +configure, build, and install this package. The following +more-detailed instructions are generic; see the `README' file for +instructions specific to this package. Some packages provide this +`INSTALL' file but do not implement all of the features documented +below. The lack of an optional feature in a given package is not +necessarily a bug. More recommendations for GNU packages can be found +in *note Makefile Conventions: (standards)Makefile Conventions. + + The `configure' shell script attempts to guess correct values for +various system-dependent variables used during compilation. It uses +those values to create a `Makefile' in each directory of the package. +It may also create one or more `.h' files containing system-dependent +definitions. Finally, it creates a shell script `config.status' that +you can run in the future to recreate the current configuration, and a +file `config.log' containing compiler output (useful mainly for +debugging `configure'). + + It can also use an optional file (typically called `config.cache' +and enabled with `--cache-file=config.cache' or simply `-C') that saves +the results of its tests to speed up reconfiguring. Caching is +disabled by default to prevent problems with accidental use of stale +cache files. + + If you need to do unusual things to compile the package, please try +to figure out how `configure' could check whether to do them, and mail +diffs or instructions to the address given in the `README' so they can +be considered for the next release. If you are using the cache, and at +some point `config.cache' contains results you don't want to keep, you +may remove or edit it. + + The file `configure.ac' (or `configure.in') is used to create +`configure' by a program called `autoconf'. You need `configure.ac' if +you want to change it or regenerate `configure' using a newer version +of `autoconf'. + + The simplest way to compile this package is: + + 1. `cd' to the directory containing the package's source code and type + `./configure' to configure the package for your system. + + Running `configure' might take a while. While running, it prints + some messages telling which features it is checking for. + + 2. Type `make' to compile the package. + + 3. Optionally, type `make check' to run any self-tests that come with + the package, generally using the just-built uninstalled binaries. + + 4. Type `make install' to install the programs and any data files and + documentation. When installing into a prefix owned by root, it is + recommended that the package be configured and built as a regular + user, and only the `make install' phase executed with root + privileges. + + 5. Optionally, type `make installcheck' to repeat any self-tests, but + this time using the binaries in their final installed location. + This target does not install anything. Running this target as a + regular user, particularly if the prior `make install' required + root privileges, verifies that the installation completed + correctly. + + 6. You can remove the program binaries and object files from the + source code directory by typing `make clean'. To also remove the + files that `configure' created (so you can compile the package for + a different kind of computer), type `make distclean'. There is + also a `make maintainer-clean' target, but that is intended mainly + for the package's developers. 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If +`config.sub' isn't included in this package, then this package doesn't +need to know the machine type. + + If you are _building_ compiler tools for cross-compiling, you should +use the option `--target=TYPE' to select the type of system they will +produce code for. + + If you want to _use_ a cross compiler, that generates code for a +platform different from the build platform, you should specify the +"host" platform (i.e., that on which the generated programs will +eventually be run) with `--host=TYPE'. + +Sharing Defaults +================ + + If you want to set default values for `configure' scripts to share, +you can create a site shell script called `config.site' that gives +default values for variables like `CC', `cache_file', and `prefix'. +`configure' looks for `PREFIX/share/config.site' if it exists, then +`PREFIX/etc/config.site' if it exists. Or, you can set the +`CONFIG_SITE' environment variable to the location of the site script. +A warning: not all `configure' scripts look for a site script. + +Defining Variables +================== + + Variables not defined in a site shell script can be set in the +environment passed to `configure'. However, some packages may run +configure again during the build, and the customized values of these +variables may be lost. In order to avoid this problem, you should set +them in the `configure' command line, using `VAR=value'. For example: + + ./configure CC=/usr/local2/bin/gcc + +causes the specified `gcc' to be used as the C compiler (unless it is +overridden in the site shell script). + +Unfortunately, this technique does not work for `CONFIG_SHELL' due to +an Autoconf bug. 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Yes, it's still used +# in the wild :-( We should find a proper way to deprecate it ... +AC_SUBST([AMTAR], ['$${TAR-tar}']) +m4_if([$1], [v7], + [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'], + [m4_case([$1], [ustar],, [pax],, + [m4_fatal([Unknown tar format])]) +AC_MSG_CHECKING([how to create a $1 tar archive]) +# Loop over all known methods to create a tar archive until one works. +_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none' +_am_tools=${am_cv_prog_tar_$1-$_am_tools} +# Do not fold the above two line into one, because Tru64 sh and +# Solaris sh will not grok spaces in the rhs of `-'. +for _am_tool in $_am_tools +do + case $_am_tool in + gnutar) + for _am_tar in tar gnutar gtar; + do + AM_RUN_LOG([$_am_tar --version]) && break + done + am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"' + am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"' + am__untar="$_am_tar -xf -" + ;; + plaintar) + # Must skip GNU tar: if it does not support --format= it doesn't create + # ustar tarball either. + (tar --version) >/dev/null 2>&1 && continue + am__tar='tar chf - "$$tardir"' + am__tar_='tar chf - "$tardir"' + am__untar='tar xf -' + ;; + pax) + am__tar='pax -L -x $1 -w "$$tardir"' + am__tar_='pax -L -x $1 -w "$tardir"' + am__untar='pax -r' + ;; + cpio) + am__tar='find "$$tardir" -print | cpio -o -H $1 -L' + am__tar_='find "$tardir" -print | cpio -o -H $1 -L' + am__untar='cpio -i -H $1 -d' + ;; + none) + am__tar=false + am__tar_=false + am__untar=false + ;; + esac + + # If the value was cached, stop now. We just wanted to have am__tar + # and am__untar set. + test -n "${am_cv_prog_tar_$1}" && break + + # tar/untar a dummy directory, and stop if the command works + rm -rf conftest.dir + mkdir conftest.dir + echo GrepMe > conftest.dir/file + AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar]) + rm -rf conftest.dir + if test -s conftest.tar; then + AM_RUN_LOG([$am__untar /dev/null 2>&1 && break + fi +done +rm -rf conftest.dir + +AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool]) +AC_MSG_RESULT([$am_cv_prog_tar_$1])]) +AC_SUBST([am__tar]) +AC_SUBST([am__untar]) +]) # _AM_PROG_TAR + diff --git a/shells/dash/files/config.h.in b/shells/dash/files/config.h.in new file mode 100644 index 0000000000000..85b33ad3fb4fc --- /dev/null +++ b/shells/dash/files/config.h.in @@ -0,0 +1,190 @@ +/* config.h.in. Generated from configure.ac by autoheader. */ + +/* Define if __attribute__((__alias__())) is supported */ +#undef HAVE_ALIAS_ATTRIBUTE + +/* Define to 1 if you have the header file. */ +#undef HAVE_ALLOCA_H + +/* Define to 1 if you have the `bsearch' function. */ +#undef HAVE_BSEARCH + +/* Define to 1 if you have the declaration of `isblank', and to 0 if you + don't. */ +#undef HAVE_DECL_ISBLANK + +/* Define to 1 if you have the `faccessat' function. */ +#undef HAVE_FACCESSAT + +/* Define to 1 if you have the `fnmatch' function. */ +#undef HAVE_FNMATCH + +/* Define to 1 if you have the `getpwnam' function. */ +#undef HAVE_GETPWNAM + +/* Define to 1 if you have the `getrlimit' function. */ +#undef HAVE_GETRLIMIT + +/* Define to 1 if you have the `glob' function. */ +#undef HAVE_GLOB + +/* Define to 1 if you have the header file. */ +#undef HAVE_INTTYPES_H + +/* Define to 1 if you have the `isalpha' function. */ +#undef HAVE_ISALPHA + +/* Define to 1 if you have the `killpg' function. */ +#undef HAVE_KILLPG + +/* Define to 1 if you have the header file. */ +#undef HAVE_MEMORY_H + +/* Define to 1 if you have the `mempcpy' function. */ +#undef HAVE_MEMPCPY + +/* Define to 1 if you have the header file. */ +#undef HAVE_PATHS_H + +/* Define to 1 if you have the `sigsetmask' function. */ +#undef HAVE_SIGSETMASK + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDINT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDLIB_H + +/* Define to 1 if you have the `stpcpy' function. */ +#undef HAVE_STPCPY + +/* Define to 1 if you have the `strchrnul' function. */ +#undef HAVE_STRCHRNUL + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRINGS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRING_H + +/* Define to 1 if you have the `strsignal' function. */ +#undef HAVE_STRSIGNAL + +/* Define to 1 if you have the `strtod' function. */ +#undef HAVE_STRTOD + +/* Define to 1 if you have the `strtoimax' function. */ +#undef HAVE_STRTOIMAX + +/* Define to 1 if you have the `strtoumax' function. */ +#undef HAVE_STRTOUMAX + +/* Define to 1 if you have the `sysconf' function. */ +#undef HAVE_SYSCONF + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_STAT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_TYPES_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_UNISTD_H + +/* Name of package */ +#undef PACKAGE + +/* Define to the address where bug reports for this package should be sent. */ +#undef PACKAGE_BUGREPORT + +/* Define to the full name of this package. */ +#undef PACKAGE_NAME + +/* Define to the full name and version of this package. */ +#undef PACKAGE_STRING + +/* Define to the one symbol short name of this package. */ +#undef PACKAGE_TARNAME + +/* Define to the home page for this package. */ +#undef PACKAGE_URL + +/* Define to the version of this package. */ +#undef PACKAGE_VERSION + +/* Define to printf format string for intmax_t */ +#undef PRIdMAX + +/* The size of `intmax_t', as computed by sizeof. */ +#undef SIZEOF_INTMAX_T + +/* The size of `long long int', as computed by sizeof. */ +#undef SIZEOF_LONG_LONG_INT + +/* Define if you build with -DSMALL */ +#undef SMALL + +/* Define to 1 if you have the ANSI C header files. */ +#undef STDC_HEADERS + +/* Enable extensions on AIX 3, Interix. */ +#ifndef _ALL_SOURCE +# undef _ALL_SOURCE +#endif +/* Enable GNU extensions on systems that have them. */ +#ifndef _GNU_SOURCE +# undef _GNU_SOURCE +#endif +/* Enable threading extensions on Solaris. */ +#ifndef _POSIX_PTHREAD_SEMANTICS +# undef _POSIX_PTHREAD_SEMANTICS +#endif +/* Enable extensions on HP NonStop. */ +#ifndef _TANDEM_SOURCE +# undef _TANDEM_SOURCE +#endif +/* Enable general extensions on Solaris. */ +#ifndef __EXTENSIONS__ +# undef __EXTENSIONS__ +#endif + + +/* Version number of package */ +#undef VERSION + +/* Define if you build with -DWITH_LINENO */ +#undef WITH_LINENO + +/* Define to 1 if on MINIX. */ +#undef _MINIX + +/* Define to system shell path */ +#undef _PATH_BSHELL + +/* Define to devnull device node path */ +#undef _PATH_DEVNULL + +/* Define to tty device node path */ +#undef _PATH_TTY + +/* Define to 2 if the system does not provide POSIX.1 features except with + this defined. */ +#undef _POSIX_1_SOURCE + +/* Define to 1 if you need to in order for `stat' and other things to work. */ +#undef _POSIX_SOURCE + +/* 64-bit operations are the same as 32-bit */ +#undef fstat64 + +/* 64-bit operations are the same as 32-bit */ +#undef lstat64 + +/* 64-bit operations are the same as 32-bit */ +#undef open64 + +/* klibc has bsd_signal instead of signal */ +#undef signal + +/* 64-bit operations are the same as 32-bit */ +#undef stat64 diff --git a/shells/dash/files/configure b/shells/dash/files/configure new file mode 100755 index 0000000000000..171cd0aa437fe --- /dev/null +++ b/shells/dash/files/configure @@ -0,0 +1,6223 @@ +#! /bin/sh +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.69 for dash 0.5.8. +# +# +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi +" + as_required="as_fn_return () { (exit \$1); } +as_fn_success () { as_fn_return 0; } +as_fn_failure () { as_fn_return 1; } +as_fn_ret_success () { return 0; } +as_fn_ret_failure () { return 1; } + +exitcode=0 +as_fn_success || { exitcode=1; echo as_fn_success failed.; } +as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; } +as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; } +as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; } +if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : + +else + exitcode=1; echo positional parameters were not saved. +fi +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" + as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO + as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO + eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && + test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1 +test \$(( 1 + 1 )) = 2 || exit 1" + if (eval "$as_required") 2>/dev/null; then : + as_have_required=yes +else + as_have_required=no +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then : + +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + as_found=: + case $as_dir in #( + /*) + for as_base in sh bash ksh sh5; do + # Try only shells that exist, to save several forks. + as_shell=$as_dir/$as_base + if { test -f "$as_shell" || test -f "$as_shell.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then : + CONFIG_SHELL=$as_shell as_have_required=yes + if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then : + break 2 +fi +fi + done;; + esac + as_found=false +done +$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi; } +IFS=$as_save_IFS + + + if test "x$CONFIG_SHELL" != x; then : + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno; then : + $as_echo "$0: This script requires a shell more modern than all" + $as_echo "$0: the shells that I found on your system." + if test x${ZSH_VERSION+set} = xset ; then + $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should" + $as_echo "$0: be upgraded to zsh 4.3.4 or later." + else + $as_echo "$0: Please tell bug-autoconf@gnu.org about your system, +$0: including any error possibly output before this +$0: message. Then install a modern shell, or manually run +$0: the script under such a shell if you do have one." + fi + exit 1 +fi +fi +fi +SHELL=${CONFIG_SHELL-/bin/sh} +export SHELL +# Unset more variables known to interfere with behavior of common tools. +CLICOLOR_FORCE= GREP_OPTIONS= +unset CLICOLOR_FORCE GREP_OPTIONS + +## --------------------- ## +## M4sh Shell Functions. ## +## --------------------- ## +# as_fn_unset VAR +# --------------- +# Portably unset VAR. +as_fn_unset () +{ + { eval $1=; unset $1;} +} +as_unset=as_fn_unset + +# as_fn_set_status STATUS +# ----------------------- +# Set $? to STATUS, without forking. +as_fn_set_status () +{ + return $1 +} # as_fn_set_status + +# as_fn_exit STATUS +# ----------------- +# Exit the shell with STATUS, even in a "trap 0" or "set -e" context. +as_fn_exit () +{ + set +e + as_fn_set_status $1 + exit $1 +} # as_fn_exit + +# as_fn_mkdir_p +# ------------- +# Create "$as_dir" as a directory, including parents if necessary. +as_fn_mkdir_p () +{ + + case $as_dir in #( + -*) as_dir=./$as_dir;; + esac + test -d "$as_dir" || eval $as_mkdir_p || { + as_dirs= + while :; do + case $as_dir in #( + *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'( + *) as_qdir=$as_dir;; + esac + as_dirs="'$as_qdir' $as_dirs" + as_dir=`$as_dirname -- "$as_dir" || +$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$as_dir" : 'X\(//\)[^/]' \| \ + X"$as_dir" : 'X\(//\)$' \| \ + X"$as_dir" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$as_dir" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + test -d "$as_dir" && break + done + test -z "$as_dirs" || eval "mkdir $as_dirs" + } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir" + + +} # as_fn_mkdir_p + +# as_fn_executable_p FILE +# ----------------------- +# Test if FILE is an executable regular file. +as_fn_executable_p () +{ + test -f "$1" && test -x "$1" +} # as_fn_executable_p +# as_fn_append VAR VALUE +# ---------------------- +# Append the text in VALUE to the end of the definition contained in VAR. Take +# advantage of any shell optimizations that allow amortized linear growth over +# repeated appends, instead of the typical quadratic growth present in naive +# implementations. +if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then : + eval 'as_fn_append () + { + eval $1+=\$2 + }' +else + as_fn_append () + { + eval $1=\$$1\$2 + } +fi # as_fn_append + +# as_fn_arith ARG... +# ------------------ +# Perform arithmetic evaluation on the ARGs, and store the result in the +# global $as_val. Take advantage of shells that can avoid forks. The arguments +# must be portable across $(()) and expr. +if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then : + eval 'as_fn_arith () + { + as_val=$(( $* )) + }' +else + as_fn_arith () + { + as_val=`expr "$@" || test $? -eq 1` + } +fi # as_fn_arith + + +# as_fn_error STATUS ERROR [LINENO LOG_FD] +# ---------------------------------------- +# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are +# provided, also output the error to LOG_FD, referencing LINENO. Then exit the +# script with STATUS, using 1 if that was 0. +as_fn_error () +{ + as_status=$1; test $as_status -eq 0 && as_status=1 + if test "$4"; then + as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4 + fi + $as_echo "$as_me: error: $2" >&2 + as_fn_exit $as_status +} # as_fn_error + +if expr a : '\(a\)' >/dev/null 2>&1 && + test "X`expr 00001 : '.*\(...\)'`" = X001; then + as_expr=expr +else + as_expr=false +fi + +if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then + as_basename=basename +else + as_basename=false +fi + +if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then + as_dirname=dirname +else + as_dirname=false +fi + +as_me=`$as_basename -- "$0" || +$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \ + X"$0" : 'X\(//\)$' \| \ + X"$0" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X/"$0" | + sed '/^.*\/\([^/][^/]*\)\/*$/{ + s//\1/ + q + } + /^X\/\(\/\/\)$/{ + s//\1/ + q + } + /^X\/\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + +# Avoid depending upon Character Ranges. +as_cr_letters='abcdefghijklmnopqrstuvwxyz' +as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ' +as_cr_Letters=$as_cr_letters$as_cr_LETTERS +as_cr_digits='0123456789' +as_cr_alnum=$as_cr_Letters$as_cr_digits + + + as_lineno_1=$LINENO as_lineno_1a=$LINENO + as_lineno_2=$LINENO as_lineno_2a=$LINENO + eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" && + test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || { + # Blame Lee E. McMahon (1931-1989) for sed's syntax. :-) + sed -n ' + p + /[$]LINENO/= + ' <$as_myself | + sed ' + s/[$]LINENO.*/&-/ + t lineno + b + :lineno + N + :loop + s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/ + t loop + s/-\n.*// + ' >$as_me.lineno && + chmod +x "$as_me.lineno" || + { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; } + + # If we had to re-execute with $CONFIG_SHELL, we're ensured to have + # already done that, so ensure we don't try to do so again and fall + # in an infinite loop. This has already happened in practice. + _as_can_reexec=no; export _as_can_reexec + # Don't try to exec as it changes $[0], causing all sort of problems + # (the dirname of $[0] is not the place where we might find the + # original and so on. Autoconf is especially sensitive to this). + . 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" >&6; } +if eval \${$3+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +#include <$2> +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + eval "$3=yes" +else + eval "$3=no" +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +eval ac_res=\$$3 + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 +$as_echo "$ac_res" >&6; } + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + +} # ac_fn_c_check_header_compile + +# ac_fn_c_try_link LINENO +# ----------------------- +# Try to link conftest.$ac_ext, and return whether this succeeded. +ac_fn_c_try_link () +{ + as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + rm -f conftest.$ac_objext conftest$ac_exeext + if { { ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link") 2>conftest.err + ac_status=$? + if test -s conftest.err; then + grep -v '^ *+' conftest.err >conftest.er1 + cat conftest.er1 >&5 + mv -f conftest.er1 conftest.err + fi + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } && { + test -z "$ac_c_werror_flag" || + test ! -s conftest.err + } && test -s conftest$ac_exeext && { + test "$cross_compiling" = yes || + test -x conftest$ac_exeext + }; then : + ac_retval=0 +else + $as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + ac_retval=1 +fi + # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information + # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would + # interfere with the next link command; also delete a directory that is + # left behind by Apple's compiler. We do this before executing the actions. + rm -rf conftest.dSYM conftest_ipa8_conftest.oo + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + as_fn_set_status $ac_retval + +} # ac_fn_c_try_link + +# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES +# --------------------------------------------- +# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR +# accordingly. +ac_fn_c_check_decl () +{ + as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + as_decl_name=`echo $2|sed 's/ *(.*//'` + as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'` + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5 +$as_echo_n "checking whether $as_decl_name is declared... " >&6; } +if eval \${$3+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main () +{ +#ifndef $as_decl_name +#ifdef __cplusplus + (void) $as_decl_use; +#else + (void) $as_decl_name; +#endif +#endif + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + eval "$3=yes" +else + eval "$3=no" +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +eval ac_res=\$$3 + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 +$as_echo "$ac_res" >&6; } + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + +} # ac_fn_c_check_decl + +# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES +# -------------------------------------------- +# Tries to find the compile-time value of EXPR in a program that includes +# INCLUDES, setting VAR accordingly. Returns whether the value could be +# computed +ac_fn_c_compute_int () +{ + as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack + if test "$cross_compiling" = yes; then + # Depending upon the size, compute the lo and hi bounds. +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main () +{ +static int test_array [1 - 2 * !(($2) >= 0)]; +test_array [0] = 0; +return test_array [0]; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_lo=0 ac_mid=0 + while :; do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main () +{ +static int test_array [1 - 2 * !(($2) <= $ac_mid)]; +test_array [0] = 0; +return test_array [0]; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_hi=$ac_mid; break +else + as_fn_arith $ac_mid + 1 && ac_lo=$as_val + if test $ac_lo -le $ac_mid; then + ac_lo= ac_hi= + break + fi + as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + done +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main () +{ +static int test_array [1 - 2 * !(($2) < 0)]; +test_array [0] = 0; +return test_array [0]; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_hi=-1 ac_mid=-1 + while :; do + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main () +{ +static int test_array [1 - 2 * !(($2) >= $ac_mid)]; +test_array [0] = 0; +return test_array [0]; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_lo=$ac_mid; break +else + as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val + if test $ac_mid -le $ac_hi; then + ac_lo= ac_hi= + break + fi + as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + done +else + ac_lo= ac_hi= +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +# Binary search between lo and hi bounds. +while test "x$ac_lo" != "x$ac_hi"; do + as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +int +main () +{ +static int test_array [1 - 2 * !(($2) <= $ac_mid)]; +test_array [0] = 0; +return test_array [0]; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_hi=$ac_mid +else + as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +done +case $ac_lo in #(( +?*) eval "$3=\$ac_lo"; ac_retval=0 ;; +'') ac_retval=1 ;; +esac + else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +$4 +static long int longval () { return $2; } +static unsigned long int ulongval () { return $2; } +#include +#include +int +main () +{ + + FILE *f = fopen ("conftest.val", "w"); + if (! f) + return 1; + if (($2) < 0) + { + long int i = longval (); + if (i != ($2)) + return 1; + fprintf (f, "%ld", i); + } + else + { + unsigned long int i = ulongval (); + if (i != ($2)) + return 1; + fprintf (f, "%lu", i); + } + /* Do not output a trailing newline, as this causes \r\n confusion + on some platforms. */ + return ferror (f) || fclose (f) != 0; + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + echo >>conftest.val; read $3 &5 +$as_echo_n "checking for $2... " >&6; } +if eval \${$3+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +/* Define $2 to an innocuous variant, in case declares $2. + For example, HP-UX 11i declares gettimeofday. */ +#define $2 innocuous_$2 + +/* System header to define __stub macros and hopefully few prototypes, + which can conflict with char $2 (); below. + Prefer to if __STDC__ is defined, since + exists even on freestanding compilers. */ + +#ifdef __STDC__ +# include +#else +# include +#endif + +#undef $2 + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char $2 (); +/* The GNU C library defines this for functions which it implements + to always fail with ENOSYS. Some functions are actually named + something starting with __ and the normal name is an alias. */ +#if defined __stub_$2 || defined __stub___$2 +choke me +#endif + +int +main () +{ +return $2 (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + eval "$3=yes" +else + eval "$3=no" +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +fi +eval ac_res=\$$3 + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5 +$as_echo "$ac_res" >&6; } + eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno + +} # ac_fn_c_check_func +cat >config.log <<_ACEOF +This file contains any messages produced by compilers while +running configure, to aid debugging if configure makes a mistake. + +It was created by dash $as_me 0.5.8, which was +generated by GNU Autoconf 2.69. Invocation command line was + + $ $0 $@ + +_ACEOF +exec 5>>config.log +{ +cat <<_ASUNAME +## --------- ## +## Platform. ## +## --------- ## + +hostname = `(hostname || uname -n) 2>/dev/null | sed 1q` +uname -m = `(uname -m) 2>/dev/null || echo unknown` +uname -r = `(uname -r) 2>/dev/null || echo unknown` +uname -s = `(uname -s) 2>/dev/null || echo unknown` +uname -v = `(uname -v) 2>/dev/null || echo unknown` + +/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown` +/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown` + +/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown` +/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown` +/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown` +/usr/bin/hostinfo = `(/usr/bin/hostinfo) 2>/dev/null || echo unknown` +/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown` +/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown` +/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown` + +_ASUNAME + +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + $as_echo "PATH: $as_dir" + done +IFS=$as_save_IFS + +} >&5 + +cat >&5 <<_ACEOF + + +## ----------- ## +## Core tests. ## +## ----------- ## + +_ACEOF + + +# Keep a trace of the command line. +# Strip out --no-create and --no-recursion so they do not pile up. +# Strip out --silent because we don't want to record it for future runs. +# Also quote any args containing shell meta-characters. +# Make two passes to allow for proper duplicate-argument suppression. +ac_configure_args= +ac_configure_args0= +ac_configure_args1= +ac_must_keep_next=false +for ac_pass in 1 2 +do + for ac_arg + do + case $ac_arg in + -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;; + -q | -quiet | --quiet | --quie | --qui | --qu | --q \ + | -silent | --silent | --silen | --sile | --sil) + continue ;; + *\'*) + ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;; + esac + case $ac_pass in + 1) as_fn_append ac_configure_args0 " '$ac_arg'" ;; + 2) + as_fn_append ac_configure_args1 " '$ac_arg'" + if test $ac_must_keep_next = true; then + ac_must_keep_next=false # Got value, back to normal. + else + case $ac_arg in + *=* | --config-cache | -C | -disable-* | --disable-* \ + | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \ + | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \ + | -with-* | --with-* | -without-* | --without-* | --x) + case "$ac_configure_args0 " in + "$ac_configure_args1"*" '$ac_arg' "* ) continue ;; + esac + ;; + -* ) ac_must_keep_next=true ;; + esac + fi + as_fn_append ac_configure_args " '$ac_arg'" + ;; + esac + done +done +{ ac_configure_args0=; unset ac_configure_args0;} +{ ac_configure_args1=; unset ac_configure_args1;} + +# When interrupted or exit'd, cleanup temporary files, and complete +# config.log. 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"$ac_site_file" \ + || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "failed to load site script $ac_site_file +See \`config.log' for more details" "$LINENO" 5; } + fi +done + +if test -r "$cache_file"; then + # Some versions of bash will fail to source /dev/null (special files + # actually), so we avoid doing that. DJGPP emulates it as a regular file. + if test /dev/null != "$cache_file" && test -f "$cache_file"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5 +$as_echo "$as_me: loading cache $cache_file" >&6;} + case $cache_file in + [\\/]* | ?:[\\/]* ) . "$cache_file";; + *) . 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"$srcdir/../.."; do + if test -f "$ac_dir/install-sh"; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install-sh -c" + break + elif test -f "$ac_dir/install.sh"; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/install.sh -c" + break + elif test -f "$ac_dir/shtool"; then + ac_aux_dir=$ac_dir + ac_install_sh="$ac_aux_dir/shtool install -c" + break + fi +done +if test -z "$ac_aux_dir"; then + as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5 +fi + +# These three variables are undocumented and unsupported, +# and are intended to be withdrawn in a future Autoconf release. +# They can cause serious problems if a builder's source tree is in a directory +# whose full name contains unusual characters. +ac_config_guess="$SHELL $ac_aux_dir/config.guess" # Please don't use this var. +ac_config_sub="$SHELL $ac_aux_dir/config.sub" # Please don't use this var. +ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var. + + +# Find a good install program. We prefer a C program (faster), +# so one script is as good as another. But avoid the broken or +# incompatible versions: +# SysV /etc/install, /usr/sbin/install +# SunOS /usr/etc/install +# IRIX /sbin/install +# AIX /bin/install +# AmigaOS /C/install, which installs bootblocks on floppy discs +# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag +# AFS /usr/afsws/bin/install, which mishandles nonexistent args +# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" +# OS/2's system install, which has a completely different semantic +# ./install, which can be erroneously created by make from ./install.sh. +# Reject install programs that cannot install multiple files. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5 +$as_echo_n "checking for a BSD-compatible install... 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It has an incompatible calling convention. + : + elif test $ac_prog = install && + grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then + # program-specific install script used by HP pwplus--don't use. + : + else + rm -rf conftest.one conftest.two conftest.dir + echo one > conftest.one + echo two > conftest.two + mkdir conftest.dir + if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" && + test -s conftest.one && test -s conftest.two && + test -s conftest.dir/conftest.one && + test -s conftest.dir/conftest.two + then + ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c" + break 3 + fi + fi + fi + done + done + ;; +esac + + done +IFS=$as_save_IFS + +rm -rf conftest.one conftest.two conftest.dir + +fi + if test "${ac_cv_path_install+set}" = set; then + INSTALL=$ac_cv_path_install + else + # As a last resort, use the slow shell script. Don't cache a + # value for INSTALL within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the value is a relative name. + INSTALL=$ac_install_sh + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5 +$as_echo "$INSTALL" >&6; } + +# Use test -z because SunOS4 sh mishandles braces in ${var-val}. +# It thinks the first close brace ends the variable substitution. +test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' + +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' + +test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5 +$as_echo_n "checking whether build environment is sane... " >&6; } +# Just in case +sleep 1 +echo timestamp > conftest.file +# Reject unsafe characters in $srcdir or the absolute working directory +# name. Accept space and tab only in the latter. +am_lf=' +' +case `pwd` in + *[\\\"\#\$\&\'\`$am_lf]*) + as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;; +esac +case $srcdir in + *[\\\"\#\$\&\'\`$am_lf\ \ ]*) + as_fn_error $? "unsafe srcdir value: \`$srcdir'" "$LINENO" 5;; +esac + +# Do `set' in a subshell so we don't clobber the current shell's +# arguments. Must try -L first in case configure is actually a +# symlink; some systems play weird games with the mod time of symlinks +# (eg FreeBSD returns the mod time of the symlink's containing +# directory). +if ( + set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null` + if test "$*" = "X"; then + # -L didn't work. + set X `ls -t "$srcdir/configure" conftest.file` + fi + rm -f conftest.file + if test "$*" != "X $srcdir/configure conftest.file" \ + && test "$*" != "X conftest.file $srcdir/configure"; then + + # If neither matched, then we have a broken ls. This can happen + # if, for instance, CONFIG_SHELL is bash and it inherits a + # broken ls alias from the environment. This has actually + # happened. Such a system could not be considered "sane". + as_fn_error $? "ls -t appears to fail. Make sure there is not a broken +alias in your environment" "$LINENO" 5 + fi + + test "$2" = conftest.file + ) +then + # Ok. + : +else + as_fn_error $? "newly created file is older than distributed files! +Check your system clock" "$LINENO" 5 +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +test "$program_prefix" != NONE && + program_transform_name="s&^&$program_prefix&;$program_transform_name" +# Use a double $ so make ignores it. +test "$program_suffix" != NONE && + program_transform_name="s&\$&$program_suffix&;$program_transform_name" +# Double any \ or $. +# By default was `s,x,x', remove it if useless. +ac_script='s/[\\$]/&&/g;s/;s,x,x,$//' +program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"` + +# expand $ac_aux_dir to an absolute path +am_aux_dir=`cd $ac_aux_dir && pwd` + +if test x"${MISSING+set}" != xset; then + case $am_aux_dir in + *\ * | *\ *) + MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;; + *) + MISSING="\${SHELL} $am_aux_dir/missing" ;; + esac +fi +# Use eval to expand $SHELL +if eval "$MISSING --run true"; then + am_missing_run="$MISSING --run " +else + am_missing_run= + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`missing' script is too old or missing" >&5 +$as_echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;} +fi + +if test x"${install_sh}" != xset; then + case $am_aux_dir in + *\ * | *\ *) + install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;; + *) + install_sh="\${SHELL} $am_aux_dir/install-sh" + esac +fi + +# Installed binaries are usually stripped using `strip' when the user +# run `make install-strip'. However `strip' might not be the right +# tool to use in cross-compilation environments, therefore Automake +# will honor the `STRIP' environment variable to overrule this program. +if test "$cross_compiling" != no; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args. +set dummy ${ac_tool_prefix}strip; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_STRIP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$STRIP"; then + ac_cv_prog_STRIP="$STRIP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_STRIP="${ac_tool_prefix}strip" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +STRIP=$ac_cv_prog_STRIP +if test -n "$STRIP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5 +$as_echo "$STRIP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_STRIP"; then + ac_ct_STRIP=$STRIP + # Extract the first word of "strip", so it can be a program name with args. +set dummy strip; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_STRIP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_STRIP"; then + ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_STRIP="strip" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP +if test -n "$ac_ct_STRIP"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5 +$as_echo "$ac_ct_STRIP" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_STRIP" = x; then + STRIP=":" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + STRIP=$ac_ct_STRIP + fi +else + STRIP="$ac_cv_prog_STRIP" +fi + +fi +INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s" + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5 +$as_echo_n "checking for a thread-safe mkdir -p... " >&6; } +if test -z "$MKDIR_P"; then + if ${ac_cv_path_mkdir+:} false; then : + $as_echo_n "(cached) " >&6 +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in mkdir gmkdir; do + for ac_exec_ext in '' $ac_executable_extensions; do + as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext" || continue + case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #( + 'mkdir (GNU coreutils) '* | \ + 'mkdir (coreutils) '* | \ + 'mkdir (fileutils) '4.1*) + ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext + break 3;; + esac + done + done + done +IFS=$as_save_IFS + +fi + + test -d ./--version && rmdir ./--version + if test "${ac_cv_path_mkdir+set}" = set; then + MKDIR_P="$ac_cv_path_mkdir -p" + else + # As a last resort, use the slow shell script. Don't cache a + # value for MKDIR_P within a source directory, because that will + # break other packages using the cache if that directory is + # removed, or if the value is a relative name. + MKDIR_P="$ac_install_sh -d" + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5 +$as_echo "$MKDIR_P" >&6; } + +mkdir_p="$MKDIR_P" +case $mkdir_p in + [\\/$]* | ?:[\\/]*) ;; + */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;; +esac + +for ac_prog in gawk mawk nawk awk +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_AWK+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$AWK"; then + ac_cv_prog_AWK="$AWK" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_AWK="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +AWK=$ac_cv_prog_AWK +if test -n "$AWK"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5 +$as_echo "$AWK" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$AWK" && break +done + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5 +$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; } +set x ${MAKE-make} +ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'` +if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat >conftest.make <<\_ACEOF +SHELL = /bin/sh +all: + @echo '@@@%%%=$(MAKE)=@@@%%%' +_ACEOF +# GNU make sometimes prints "make[1]: Entering ...", which would confuse us. +case `${MAKE-make} -f conftest.make 2>/dev/null` in + *@@@%%%=?*=@@@%%%*) + eval ac_cv_prog_make_${ac_make}_set=yes;; + *) + eval ac_cv_prog_make_${ac_make}_set=no;; +esac +rm -f conftest.make +fi +if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } + SET_MAKE= +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } + SET_MAKE="MAKE=${MAKE-make}" +fi + +rm -rf .tst 2>/dev/null +mkdir .tst 2>/dev/null +if test -d .tst; then + am__leading_dot=. +else + am__leading_dot=_ +fi +rmdir .tst 2>/dev/null + +if test "`cd $srcdir && pwd`" != "`pwd`"; then + # Use -I$(srcdir) only when $(srcdir) != ., so that make's output + # is not polluted with repeated "-I." + am__isrc=' -I$(srcdir)' + # test to see if srcdir already configured + if test -f $srcdir/config.status; then + as_fn_error $? "source directory already configured; run \"make distclean\" there first" "$LINENO" 5 + fi +fi + +# test whether we have cygpath +if test -z "$CYGPATH_W"; then + if (cygpath --version) >/dev/null 2>/dev/null; then + CYGPATH_W='cygpath -w' + else + CYGPATH_W=echo + fi +fi + + +# Define the identity of the package. + PACKAGE='dash' + VERSION='0.5.8' + + +cat >>confdefs.h <<_ACEOF +#define PACKAGE "$PACKAGE" +_ACEOF + + +cat >>confdefs.h <<_ACEOF +#define VERSION "$VERSION" +_ACEOF + +# Some tools Automake needs. + +ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"} + + +AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"} + + +AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"} + + +AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"} + + +MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"} + +# We need awk for the "check" target. The system "awk" is bad on +# some platforms. +# Always define AMTAR for backward compatibility. Yes, it's still used +# in the wild :-( We should find a proper way to deprecate it ... +AMTAR='$${TAR-tar}' + +am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -' + + + + + + + +ac_config_headers="$ac_config_headers config.h" + + +ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu +if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. +set dummy ${ac_tool_prefix}gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$ac_cv_prog_CC"; then + ac_ct_CC=$CC + # Extract the first word of "gcc", so it can be a program name with args. +set dummy gcc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="gcc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +else + CC="$ac_cv_prog_CC" +fi + +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args. +set dummy ${ac_tool_prefix}cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="${ac_tool_prefix}cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + fi +fi +if test -z "$CC"; then + # Extract the first word of "cc", so it can be a program name with args. +set dummy cc; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else + ac_prog_rejected=no +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then + ac_prog_rejected=yes + continue + fi + ac_cv_prog_CC="cc" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +if test $ac_prog_rejected = yes; then + # We found a bogon in the path, so make sure we never use it. + set dummy $ac_cv_prog_CC + shift + if test $# != 0; then + # We chose a different compiler from the bogus one. + # However, it has the same basename, so the bogon will be chosen + # first if we set CC to just the basename; use the full file name. + shift + ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@" + fi +fi +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + +fi +if test -z "$CC"; then + if test -n "$ac_tool_prefix"; then + for ac_prog in cl.exe + do + # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. +set dummy $ac_tool_prefix$ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$CC"; then + ac_cv_prog_CC="$CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_CC="$ac_tool_prefix$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +CC=$ac_cv_prog_CC +if test -n "$CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 +$as_echo "$CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$CC" && break + done +fi +if test -z "$CC"; then + ac_ct_CC=$CC + for ac_prog in cl.exe +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_ac_ct_CC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$ac_ct_CC"; then + ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_ac_ct_CC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +ac_ct_CC=$ac_cv_prog_ac_ct_CC +if test -n "$ac_ct_CC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 +$as_echo "$ac_ct_CC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$ac_ct_CC" && break +done + + if test "x$ac_ct_CC" = x; then + CC="" + else + case $cross_compiling:$ac_tool_warned in +yes:) +{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 +$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} +ac_tool_warned=yes ;; +esac + CC=$ac_ct_CC + fi +fi + +fi + + +test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "no acceptable C compiler found in \$PATH +See \`config.log' for more details" "$LINENO" 5; } + +# Provide some information about the compiler. +$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5 +set X $ac_compile +ac_compiler=$2 +for ac_option in --version -v -V -qversion; do + { { ac_try="$ac_compiler $ac_option >&5" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compiler $ac_option >&5") 2>conftest.err + ac_status=$? + if test -s conftest.err; then + sed '10a\ +... rest of stderr output deleted ... + 10q' conftest.err >conftest.er1 + cat conftest.er1 >&5 + fi + rm -f conftest.er1 conftest.err + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } +done + +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +ac_clean_files_save=$ac_clean_files +ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out" +# Try to create an executable without -o first, disregard a.out. +# It will help us diagnose broken compilers, and finding out an intuition +# of exeext. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5 +$as_echo_n "checking whether the C compiler works... " >&6; } +ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'` + +# The possible output files: +ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*" + +ac_rmfiles= +for ac_file in $ac_files +do + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + * ) ac_rmfiles="$ac_rmfiles $ac_file";; + esac +done +rm -f $ac_rmfiles + +if { { ac_try="$ac_link_default" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link_default") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + # Autoconf-2.13 could set the ac_cv_exeext variable to `no'. +# So ignore a value of `no', otherwise this would lead to `EXEEXT = no' +# in a Makefile. We should not override ac_cv_exeext if it was cached, +# so that the user can short-circuit this test for compilers unknown to +# Autoconf. +for ac_file in $ac_files '' +do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) + ;; + [ab].out ) + # We found the default executable, but exeext='' is most + # certainly right. + break;; + *.* ) + if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no; + then :; else + ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + fi + # We set ac_cv_exeext here because the later test for it is not + # safe: cross compilers may not add the suffix if given an `-o' + # argument, so we may need to know it at that point already. + # Even if this section looks crufty: it has the advantage of + # actually working. + break;; + * ) + break;; + esac +done +test "$ac_cv_exeext" = no && ac_cv_exeext= + +else + ac_file='' +fi +if test -z "$ac_file"; then : + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +$as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "C compiler cannot create executables +See \`config.log' for more details" "$LINENO" 5; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 +$as_echo "yes" >&6; } +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5 +$as_echo_n "checking for C compiler default output file name... " >&6; } +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5 +$as_echo "$ac_file" >&6; } +ac_exeext=$ac_cv_exeext + +rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out +ac_clean_files=$ac_clean_files_save +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5 +$as_echo_n "checking for suffix of executables... " >&6; } +if { { ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + # If both `conftest.exe' and `conftest' are `present' (well, observable) +# catch `conftest.exe'. For instance with Cygwin, `ls conftest' will +# work properly (i.e., refer to `conftest.exe'), while it won't with +# `rm'. +for ac_file in conftest.exe conftest conftest.*; do + test -f "$ac_file" || continue + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;; + *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'` + break;; + * ) break;; + esac +done +else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot compute suffix of executables: cannot compile and link +See \`config.log' for more details" "$LINENO" 5; } +fi +rm -f conftest conftest$ac_cv_exeext +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5 +$as_echo "$ac_cv_exeext" >&6; } + +rm -f conftest.$ac_ext +EXEEXT=$ac_cv_exeext +ac_exeext=$EXEEXT +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +int +main () +{ +FILE *f = fopen ("conftest.out", "w"); + return ferror (f) || fclose (f) != 0; + + ; + return 0; +} +_ACEOF +ac_clean_files="$ac_clean_files conftest.out" +# Check that the compiler produces executables we can run. If not, either +# the compiler is broken, or we cross compile. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5 +$as_echo_n "checking whether we are cross compiling... " >&6; } +if test "$cross_compiling" != yes; then + { { ac_try="$ac_link" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_link") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; } + if { ac_try='./conftest$ac_cv_exeext' + { { case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_try") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + cross_compiling=no + else + if test "$cross_compiling" = maybe; then + cross_compiling=yes + else + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? "cannot run C compiled programs. +If you meant to cross compile, use \`--host'. +See \`config.log' for more details" "$LINENO" 5; } + fi + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5 +$as_echo "$cross_compiling" >&6; } + +rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out +ac_clean_files=$ac_clean_files_save +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5 +$as_echo_n "checking for suffix of object files... " >&6; } +if ${ac_cv_objext+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.o conftest.obj +if { { ac_try="$ac_compile" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" +$as_echo "$ac_try_echo"; } >&5 + (eval "$ac_compile") 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; then : + for ac_file in conftest.o conftest.obj conftest.*; do + test -f "$ac_file" || continue; + case $ac_file in + *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;; + *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'` + break;; + esac +done +else + $as_echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error $? 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" >&6; } +if ${ac_cv_path_EGREP+:} false; then : + $as_echo_n "(cached) " >&6 +else + if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 + then ac_cv_path_EGREP="$GREP -E" + else + if test -z "$EGREP"; then + ac_path_EGREP_found=false + # Loop through the user's path and test for each of PROGNAME-LIST + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_prog in egrep; do + for ac_exec_ext in '' $ac_executable_extensions; do + ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext" + as_fn_executable_p "$ac_path_EGREP" || continue +# Check for GNU ac_path_EGREP and select it if it is found. + # Check for GNU $ac_path_EGREP +case `"$ac_path_EGREP" --version 2>&1` in +*GNU*) + ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;; +*) + ac_count=0 + $as_echo_n 0123456789 >"conftest.in" + while : + do + cat "conftest.in" "conftest.in" >"conftest.tmp" + mv "conftest.tmp" "conftest.in" + cp "conftest.in" "conftest.nl" + $as_echo 'EGREP' >> "conftest.nl" + "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break + diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break + as_fn_arith $ac_count + 1 && ac_count=$as_val + if test $ac_count -gt ${ac_path_EGREP_max-0}; then + # Best one so far, save it but keep looking for a better one + ac_cv_path_EGREP="$ac_path_EGREP" + ac_path_EGREP_max=$ac_count + fi + # 10*(2^10) chars as input seems more than enough + test $ac_count -gt 10 && break + done + rm -f conftest.in conftest.tmp conftest.nl conftest.out;; +esac + + $ac_path_EGREP_found && break 3 + done + done + done +IFS=$as_save_IFS + if test -z "$ac_cv_path_EGREP"; then + as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 + fi +else + ac_cv_path_EGREP=$EGREP +fi + + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5 +$as_echo "$ac_cv_path_EGREP" >&6; } + EGREP="$ac_cv_path_EGREP" + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5 +$as_echo_n "checking for ANSI C header files... " >&6; } +if ${ac_cv_header_stdc+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#include +#include + +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_header_stdc=yes +else + ac_cv_header_stdc=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext + +if test $ac_cv_header_stdc = yes; then + # SunOS 4.x string.h does not declare mem*, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "memchr" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include + +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "free" >/dev/null 2>&1; then : + +else + ac_cv_header_stdc=no +fi +rm -f conftest* + +fi + +if test $ac_cv_header_stdc = yes; then + # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. + if test "$cross_compiling" = yes; then : + : +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +#include +#if ((' ' & 0x0FF) == 0x020) +# define ISLOWER(c) ('a' <= (c) && (c) <= 'z') +# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) +#else +# define ISLOWER(c) \ + (('a' <= (c) && (c) <= 'i') \ + || ('j' <= (c) && (c) <= 'r') \ + || ('s' <= (c) && (c) <= 'z')) +# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c)) +#endif + +#define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) +int +main () +{ + int i; + for (i = 0; i < 256; i++) + if (XOR (islower (i), ISLOWER (i)) + || toupper (i) != TOUPPER (i)) + return 2; + return 0; +} +_ACEOF +if ac_fn_c_try_run "$LINENO"; then : + +else + ac_cv_header_stdc=no +fi +rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \ + conftest.$ac_objext conftest.beam conftest.$ac_ext +fi + +fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5 +$as_echo "$ac_cv_header_stdc" >&6; } +if test $ac_cv_header_stdc = yes; then + +$as_echo "#define STDC_HEADERS 1" >>confdefs.h + +fi + +# On IRIX 5.3, sys/types and inttypes.h are conflicting. +for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \ + inttypes.h stdint.h unistd.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default +" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + + + + ac_fn_c_check_header_mongrel "$LINENO" "minix/config.h" "ac_cv_header_minix_config_h" "$ac_includes_default" +if test "x$ac_cv_header_minix_config_h" = xyes; then : + MINIX=yes +else + MINIX= +fi + + + if test "$MINIX" = yes; then + +$as_echo "#define _POSIX_SOURCE 1" >>confdefs.h + + +$as_echo "#define _POSIX_1_SOURCE 2" >>confdefs.h + + +$as_echo "#define _MINIX 1" >>confdefs.h + + fi + + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5 +$as_echo_n "checking whether it is safe to define __EXTENSIONS__... " >&6; } +if ${ac_cv_safe_to_define___extensions__+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +# define __EXTENSIONS__ 1 + $ac_includes_default +int +main () +{ + + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + ac_cv_safe_to_define___extensions__=yes +else + ac_cv_safe_to_define___extensions__=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5 +$as_echo "$ac_cv_safe_to_define___extensions__" >&6; } + test $ac_cv_safe_to_define___extensions__ = yes && + $as_echo "#define __EXTENSIONS__ 1" >>confdefs.h + + $as_echo "#define _ALL_SOURCE 1" >>confdefs.h + + $as_echo "#define _GNU_SOURCE 1" >>confdefs.h + + $as_echo "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h + + $as_echo "#define _TANDEM_SOURCE 1" >>confdefs.h + + + +for ac_prog in 'bison -y' byacc +do + # Extract the first word of "$ac_prog", so it can be a program name with args. +set dummy $ac_prog; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_YACC+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$YACC"; then + ac_cv_prog_YACC="$YACC" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_YACC="$ac_prog" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +YACC=$ac_cv_prog_YACC +if test -n "$YACC"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $YACC" >&5 +$as_echo "$YACC" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + test -n "$YACC" && break +done +test -n "$YACC" || YACC="yacc" + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for build system compiler" >&5 +$as_echo_n "checking for build system compiler... " >&6; } +if test "$cross_compiling" = yes; then + CC_FOR_BUILD=${CC_FOR_BUILD-cc} +else + CC_FOR_BUILD=${CC} +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${CC_FOR_BUILD}" >&5 +$as_echo "${CC_FOR_BUILD}" >&6; } + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __attribute__((__alias__()))" >&5 +$as_echo_n "checking for __attribute__((__alias__()))... " >&6; } +dash_cv_have_attribute_alias=no +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +void t() {} + void a() __attribute__((__alias__("t"))); +int +main () +{ +a(); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + dash_cv_have_attribute_alias=yes +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dash_cv_have_attribute_alias" >&5 +$as_echo "$dash_cv_have_attribute_alias" >&6; } +if test "x$dash_cv_have_attribute_alias" = xyes; then + +$as_echo "#define HAVE_ALIAS_ATTRIBUTE 1" >>confdefs.h + +fi + +# Check whether --enable-static was given. +if test "${enable_static+set}" = set; then : + enableval=$enable_static; +fi + +if test "$enable_static" = "yes"; then + export LDFLAGS="-static -Wl,--fatal-warnings" +fi + +# Check whether --enable-fnmatch was given. +if test "${enable_fnmatch+set}" = set; then : + enableval=$enable_fnmatch; +fi + +# Check whether --enable-glob was given. +if test "${enable_glob+set}" = set; then : + enableval=$enable_glob; +fi + + + +for ac_header in alloca.h paths.h +do : + as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` +ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" +if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 +_ACEOF + +fi + +done + + +ac_fn_c_check_decl "$LINENO" "_PATH_BSHELL" "ac_cv_have_decl__PATH_BSHELL" " +#ifdef HAVE_PATHS_H +#include +#endif + +" +if test "x$ac_cv_have_decl__PATH_BSHELL" = xyes; then : + +else + +cat >>confdefs.h <<_ACEOF +#define _PATH_BSHELL "/bin/sh" +_ACEOF + +fi + +ac_fn_c_check_decl "$LINENO" "_PATH_DEVNULL" "ac_cv_have_decl__PATH_DEVNULL" " +#ifdef HAVE_PATHS_H +#include +#endif + +" +if test "x$ac_cv_have_decl__PATH_DEVNULL" = xyes; then : + +else + +cat >>confdefs.h <<_ACEOF +#define _PATH_DEVNULL "/dev/null" +_ACEOF + +fi + +ac_fn_c_check_decl "$LINENO" "_PATH_TTY" "ac_cv_have_decl__PATH_TTY" " +#ifdef HAVE_PATHS_H +#include +#endif + +" +if test "x$ac_cv_have_decl__PATH_TTY" = xyes; then : + +else + +cat >>confdefs.h <<_ACEOF +#define _PATH_TTY "/dev/tty" +_ACEOF + +fi + + +ac_fn_c_check_decl "$LINENO" "isblank" "ac_cv_have_decl_isblank" "#include +" +if test "x$ac_cv_have_decl_isblank" = xyes; then : + ac_have_decl=1 +else + ac_have_decl=0 +fi + +cat >>confdefs.h <<_ACEOF +#define HAVE_DECL_ISBLANK $ac_have_decl +_ACEOF + + +# The cast to long int works around a bug in the HP C Compiler +# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects +# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. +# This bug is HP SR number 8606223364. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of intmax_t" >&5 +$as_echo_n "checking size of intmax_t... " >&6; } +if ${ac_cv_sizeof_intmax_t+:} false; then : + $as_echo_n "(cached) " >&6 +else + if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (intmax_t))" "ac_cv_sizeof_intmax_t" "$ac_includes_default"; then : + +else + if test "$ac_cv_type_intmax_t" = yes; then + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "cannot compute sizeof (intmax_t) +See \`config.log' for more details" "$LINENO" 5; } + else + ac_cv_sizeof_intmax_t=0 + fi +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_intmax_t" >&5 +$as_echo "$ac_cv_sizeof_intmax_t" >&6; } + + + +cat >>confdefs.h <<_ACEOF +#define SIZEOF_INTMAX_T $ac_cv_sizeof_intmax_t +_ACEOF + + +# The cast to long int works around a bug in the HP C Compiler +# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects +# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. +# This bug is HP SR number 8606223364. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long long int" >&5 +$as_echo_n "checking size of long long int... " >&6; } +if ${ac_cv_sizeof_long_long_int+:} false; then : + $as_echo_n "(cached) " >&6 +else + if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long long int))" "ac_cv_sizeof_long_long_int" "$ac_includes_default"; then : + +else + if test "$ac_cv_type_long_long_int" = yes; then + { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 +$as_echo "$as_me: error: in \`$ac_pwd':" >&2;} +as_fn_error 77 "cannot compute sizeof (long long int) +See \`config.log' for more details" "$LINENO" 5; } + else + ac_cv_sizeof_long_long_int=0 + fi +fi + +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_long_int" >&5 +$as_echo "$ac_cv_sizeof_long_long_int" >&6; } + + + +cat >>confdefs.h <<_ACEOF +#define SIZEOF_LONG_LONG_INT $ac_cv_sizeof_long_long_int +_ACEOF + + + +if test "x$ac_cv_sizeof_intmax_t" = "x$ac_cv_sizeof_long_long_int"; then + intmax_fstr="lld" +else + intmax_fstr="jd" +fi + +ac_fn_c_check_decl "$LINENO" "PRIdMAX" "ac_cv_have_decl_PRIdMAX" " +#include + +" +if test "x$ac_cv_have_decl_PRIdMAX" = xyes; then : + +else + +cat >>confdefs.h <<_ACEOF +#define PRIdMAX "$intmax_fstr" +_ACEOF + +fi + + +for ac_func in bsearch faccessat getpwnam getrlimit isalpha killpg \ + mempcpy \ + sigsetmask stpcpy strchrnul strsignal strtod strtoimax \ + strtoumax sysconf +do : + as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh` +ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var" +if eval test \"x\$"$as_ac_var"\" = x"yes"; then : + cat >>confdefs.h <<_ACEOF +#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1 +_ACEOF + +fi +done + + +if test "$enable_fnmatch" = yes; then + use_fnmatch= + for ac_func in fnmatch +do : + ac_fn_c_check_func "$LINENO" "fnmatch" "ac_cv_func_fnmatch" +if test "x$ac_cv_func_fnmatch" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_FNMATCH 1 +_ACEOF + use_fnmatch=yes +fi +done + +fi + +if test "$use_fnmatch" = yes && test "$enable_glob" = yes; then + for ac_func in glob +do : + ac_fn_c_check_func "$LINENO" "glob" "ac_cv_func_glob" +if test "x$ac_cv_func_glob" = xyes; then : + cat >>confdefs.h <<_ACEOF +#define HAVE_GLOB 1 +_ACEOF + +fi +done + +fi + +ac_fn_c_check_func "$LINENO" "signal" "ac_cv_func_signal" +if test "x$ac_cv_func_signal" = xyes; then : + +fi + +if test "$ac_cv_func_signal" != yes; then + ac_fn_c_check_func "$LINENO" "bsd_signal" "ac_cv_func_bsd_signal" +if test "x$ac_cv_func_bsd_signal" = xyes; then : + +$as_echo "#define signal bsd_signal" >>confdefs.h + +fi + +fi + +ac_fn_c_check_func "$LINENO" "stat64" "ac_cv_func_stat64" +if test "x$ac_cv_func_stat64" = xyes; then : + +else + +ac_fn_c_check_decl "$LINENO" "stat64" "ac_cv_have_decl_stat64" "#include +" +if test "x$ac_cv_have_decl_stat64" = xyes; then : + +else + +$as_echo "#define fstat64 fstat" >>confdefs.h + + +$as_echo "#define lstat64 lstat" >>confdefs.h + + +$as_echo "#define stat64 stat" >>confdefs.h + + +fi + + +fi + + +ac_fn_c_check_func "$LINENO" "open64" "ac_cv_func_open64" +if test "x$ac_cv_func_open64" = xyes; then : + +else + + +$as_echo "#define open64 open" >>confdefs.h + + +fi + + + +# Check whether --with-libedit was given. +if test "${with_libedit+set}" = set; then : + withval=$with_libedit; +fi + +use_libedit= +if test "$with_libedit" = "yes"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for history_init in -ledit" >&5 +$as_echo_n "checking for history_init in -ledit... " >&6; } +if ${ac_cv_lib_edit_history_init+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-ledit $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char history_init (); +int +main () +{ +return history_init (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_edit_history_init=yes +else + ac_cv_lib_edit_history_init=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_edit_history_init" >&5 +$as_echo "$ac_cv_lib_edit_history_init" >&6; } +if test "x$ac_cv_lib_edit_history_init" = xyes; then : + + ac_fn_c_check_header_mongrel "$LINENO" "histedit.h" "ac_cv_header_histedit_h" "$ac_includes_default" +if test "x$ac_cv_header_histedit_h" = xyes; then : + use_libedit="yes" +else + as_fn_error $? "Can't find required header files." "$LINENO" 5 +fi + + +fi + +fi +if test "$use_libedit" != "yes"; then + +$as_echo "#define SMALL 1" >>confdefs.h + +else + export LIBS="$LIBS -ledit" +fi +# Check whether --enable-lineno was given. +if test "${enable_lineno+set}" = set; then : + enableval=$enable_lineno; +fi + +if test "$enable_lineno" != "no"; then + +$as_echo "#define WITH_LINENO 1" >>confdefs.h + +fi +ac_config_files="$ac_config_files Makefile src/Makefile" + +cat >confcache <<\_ACEOF +# This file is a shell script that caches the results of configure +# tests run on this system so they can be shared between configure +# scripts and configure runs, see configure's option --config-cache. +# It is not useful on other systems. 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"invalid argument: \`$ac_config_target'" "$LINENO" 5;; + esac +done + + +# If the user did not use the arguments to specify the items to instantiate, +# then the envvar interface is used. Set only those that are not. +# We use the long form for the default assignment because of an extremely +# bizarre bug on SunOS 4.1.3. +if $ac_need_defaults; then + test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files + test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers + test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands +fi + +# Have a temporary directory for convenience. Make it in the build tree +# simply because there is no reason against having it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Hook for its removal unless debugging. +# Note that there is a small window in which the directory will not be cleaned: +# after its creation but before its name has been assigned to `$tmp'. +$debug || +{ + tmp= ac_tmp= + trap 'exit_status=$? + : "${ac_tmp:=$tmp}" + { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status +' 0 + trap 'as_fn_exit 1' 1 2 13 15 +} +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` && + test -d "$tmp" +} || +{ + tmp=./conf$$-$RANDOM + (umask 077 && mkdir "$tmp") +} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5 +ac_tmp=$tmp + +# Set up the scripts for CONFIG_FILES section. +# No need to generate them if there are no CONFIG_FILES. +# This happens for instance with `./config.status config.h'. +if test -n "$CONFIG_FILES"; then + + +ac_cr=`echo X | tr X '\015'` +# On cygwin, bash can eat \r inside `` if the user requested igncr. +# But we know of no other shell where ac_cr would be empty at this +# point, so we can use a bashism as a fallback. +if test "x$ac_cr" = x; then + eval ac_cr=\$\'\\r\' +fi +ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' /dev/null` +if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then + ac_cs_awk_cr='\\r' +else + ac_cs_awk_cr=$ac_cr +fi + +echo 'BEGIN {' >"$ac_tmp/subs1.awk" && +_ACEOF + + +{ + echo "cat >conf$$subs.awk <<_ACEOF" && + echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' && + echo "_ACEOF" +} >conf$$subs.sh || + as_fn_error $? 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"could not setup config files machinery" "$LINENO" 5 +_ACEOF + +# VPATH may cause trouble with some makes, so we remove sole $(srcdir), +# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and +# trailing colons and then remove the whole line if VPATH becomes empty +# (actually we leave an empty line to preserve line numbers). +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{ +h +s/// +s/^/:/ +s/[ ]*$/:/ +s/:\$(srcdir):/:/g +s/:\${srcdir}:/:/g +s/:@srcdir@:/:/g +s/^:*// +s/:*$// +x +s/\(=[ ]*\).*/\1/ +G +s/\n// +s/^[^=]*=[ ]*$// +}' +fi + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +fi # test -n "$CONFIG_FILES" + +# Set up the scripts for CONFIG_HEADERS section. +# No need to generate them if there are no CONFIG_HEADERS. +# This happens for instance with `./config.status Makefile'. +if test -n "$CONFIG_HEADERS"; then +cat >"$ac_tmp/defines.awk" <<\_ACAWK || +BEGIN { +_ACEOF + +# Transform confdefs.h into an awk script `defines.awk', embedded as +# here-document in config.status, that substitutes the proper values into +# config.h.in to produce config.h. + +# Create a delimiter string that does not exist in confdefs.h, to ease +# handling of long lines. +ac_delim='%!_!# ' +for ac_last_try in false false :; do + ac_tt=`sed -n "/$ac_delim/p" confdefs.h` + if test -z "$ac_tt"; then + break + elif $ac_last_try; then + as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5 + else + ac_delim="$ac_delim!$ac_delim _$ac_delim!! " + fi +done + +# For the awk script, D is an array of macro values keyed by name, +# likewise P contains macro parameters if any. 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This is necessary, for example, + # in the case of _POSIX_SOURCE, which is predefined and required + # on some systems where configure will not decide to define it. + if (defundef == "undef") { + print "/*", prefix defundef, macro, "*/" + next + } + } +} +{ print } +_ACAWK +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 + as_fn_error $? "could not setup config headers machinery" "$LINENO" 5 +fi # test -n "$CONFIG_HEADERS" + + +eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS :C $CONFIG_COMMANDS" +shift +for ac_tag +do + case $ac_tag in + :[FHLC]) ac_mode=$ac_tag; continue;; + esac + case $ac_mode$ac_tag in + :[FHL]*:*);; + :L* | :C*:*) as_fn_error $? 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"could not create -" "$LINENO" 5 + fi +# Compute "$ac_file"'s index in $config_headers. +_am_arg="$ac_file" +_am_stamp_count=1 +for _am_header in $config_headers :; do + case $_am_header in + $_am_arg | $_am_arg:* ) + break ;; + * ) + _am_stamp_count=`expr $_am_stamp_count + 1` ;; + esac +done +echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" || +$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$_am_arg" : 'X\(//\)[^/]' \| \ + X"$_am_arg" : 'X\(//\)$' \| \ + X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$_am_arg" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'`/stamp-h$_am_stamp_count + ;; + + :C) { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5 +$as_echo "$as_me: executing $ac_file commands" >&6;} + ;; + esac + + + case $ac_file$ac_mode in + "depfiles":C) test x"$AMDEP_TRUE" != x"" || { + # Autoconf 2.62 quotes --file arguments for eval, but not when files + # are listed without --file. Let's play safe and only enable the eval + # if we detect the quoting. + case $CONFIG_FILES in + *\'*) eval set x "$CONFIG_FILES" ;; + *) set x $CONFIG_FILES ;; + esac + shift + for mf + do + # Strip MF so we end up with the name of the file. + mf=`echo "$mf" | sed -e 's/:.*$//'` + # Check whether this is an Automake generated Makefile or not. + # We used to match only the files named `Makefile.in', but + # some people rename them; so instead we look at the file content. + # Grep'ing the first line is not enough: some people post-process + # each Makefile.in and add a new line on top of each file to say so. + # Grep'ing the whole file is not good either: AIX grep has a line + # limit of 2048, but all sed's we know have understand at least 4000. + if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then + dirpart=`$as_dirname -- "$mf" || +$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$mf" : 'X\(//\)[^/]' \| \ + X"$mf" : 'X\(//\)$' \| \ + X"$mf" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$mf" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + else + continue + fi + # Extract the definition of DEPDIR, am__include, and am__quote + # from the Makefile without running `make'. + DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"` + test -z "$DEPDIR" && continue + am__include=`sed -n 's/^am__include = //p' < "$mf"` + test -z "am__include" && continue + am__quote=`sed -n 's/^am__quote = //p' < "$mf"` + # When using ansi2knr, U may be empty or an underscore; expand it + U=`sed -n 's/^U = //p' < "$mf"` + # Find all dependency output files, they are included files with + # $(DEPDIR) in their names. We invoke sed twice because it is the + # simplest approach to changing $(DEPDIR) to its actual value in the + # expansion. + for file in `sed -n " + s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \ + sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do + # Make sure the directory exists. + test -f "$dirpart/$file" && continue + fdir=`$as_dirname -- "$file" || +$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$file" : 'X\(//\)[^/]' \| \ + X"$file" : 'X\(//\)$' \| \ + X"$file" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + as_dir=$dirpart/$fdir; as_fn_mkdir_p + # echo "creating $dirpart/$file" + echo '# dummy' > "$dirpart/$file" + done + done +} + ;; + + esac +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + diff --git a/shells/dash/files/configure.ac b/shells/dash/files/configure.ac new file mode 100644 index 0000000000000..60a2a2638fd1e --- /dev/null +++ b/shells/dash/files/configure.ac @@ -0,0 +1,140 @@ +AC_INIT(dash, 0.5.8) +AM_INIT_AUTOMAKE([foreign]) +AC_CONFIG_SRCDIR([src/main.c]) + +AC_CONFIG_HEADERS(config.h) + +dnl Checks for programs. +AC_PROG_CC +AC_GNU_SOURCE +AC_PROG_YACC + +AC_MSG_CHECKING([for build system compiler]) +if test "$cross_compiling" = yes; then + CC_FOR_BUILD=${CC_FOR_BUILD-cc} +else + CC_FOR_BUILD=${CC} +fi +AC_MSG_RESULT(${CC_FOR_BUILD}) +AC_SUBST(CC_FOR_BUILD) + +AC_MSG_CHECKING([for __attribute__((__alias__()))]) +dash_cv_have_attribute_alias=no +AC_LINK_IFELSE([AC_LANG_PROGRAM([void t() {} + void a() __attribute__((__alias__("t")));], + [a();])], + [dash_cv_have_attribute_alias=yes]) +AC_MSG_RESULT($dash_cv_have_attribute_alias) +if test "x$dash_cv_have_attribute_alias" = xyes; then + AC_DEFINE([HAVE_ALIAS_ATTRIBUTE], 1, + [Define if __attribute__((__alias__())) is supported]) +fi + +AC_ARG_ENABLE(static, AS_HELP_STRING(--enable-static, \ + [Build statical linked program])) +if test "$enable_static" = "yes"; then + export LDFLAGS="-static -Wl,--fatal-warnings" +fi + +AC_ARG_ENABLE(fnmatch, AS_HELP_STRING(--enable-fnmatch, \ + [Use fnmatch(3) from libc])) +AC_ARG_ENABLE(glob, AS_HELP_STRING(--enable-glob, [Use glob(3) from libc])) + +dnl Checks for libraries. + +dnl Checks for header files. +AC_CHECK_HEADERS(alloca.h paths.h) + +dnl Check for declarations +AC_CHECK_DECL([_PATH_BSHELL],,AC_DEFINE_UNQUOTED([_PATH_BSHELL], "/bin/sh", [Define to system shell path]),[ +#ifdef HAVE_PATHS_H +#include +#endif +]) +AC_CHECK_DECL([_PATH_DEVNULL],,AC_DEFINE_UNQUOTED([_PATH_DEVNULL], "/dev/null", [Define to devnull device node path]),[ +#ifdef HAVE_PATHS_H +#include +#endif +]) +AC_CHECK_DECL([_PATH_TTY],,AC_DEFINE_UNQUOTED([_PATH_TTY], "/dev/tty", [Define to tty device node path]),[ +#ifdef HAVE_PATHS_H +#include +#endif +]) + +dnl Some systems lack isblank +AC_CHECK_DECLS([isblank],,,[#include ]) + +dnl Check for sizes of types +AC_CHECK_SIZEOF([intmax_t]) +AC_CHECK_SIZEOF([long long int]) + +dnl Select a fallback format string for intmax_t in case we don't find PRIdMAX +if test "x$ac_cv_sizeof_intmax_t" = "x$ac_cv_sizeof_long_long_int"; then + intmax_fstr="lld" +else + intmax_fstr="jd" +fi + +dnl Check for PRIdMAX and define it to a fallback if not found +AC_CHECK_DECL([PRIdMAX],, + [AC_DEFINE_UNQUOTED([PRIdMAX], "$intmax_fstr", + [Define to printf format string for intmax_t])], + [ +#include +]) + +dnl Checks for library functions. +AC_CHECK_FUNCS(bsearch faccessat getpwnam getrlimit isalpha killpg \ + mempcpy \ + sigsetmask stpcpy strchrnul strsignal strtod strtoimax \ + strtoumax sysconf) + +if test "$enable_fnmatch" = yes; then + use_fnmatch= + AC_CHECK_FUNCS(fnmatch, use_fnmatch=yes) +fi + +if test "$use_fnmatch" = yes && test "$enable_glob" = yes; then + AC_CHECK_FUNCS(glob) +fi + +dnl Check for klibc signal. +AC_CHECK_FUNC(signal) +if test "$ac_cv_func_signal" != yes; then + AC_CHECK_FUNC(bsd_signal, + [AC_DEFINE(signal, bsd_signal, + [klibc has bsd_signal instead of signal])]) +fi + +dnl Check for stat64 (dietlibc/klibc). +AC_CHECK_FUNC(stat64,, [ + AC_DEFINE(fstat64, fstat, [64-bit operations are the same as 32-bit]) + AC_DEFINE(lstat64, lstat, [64-bit operations are the same as 32-bit]) + AC_DEFINE(stat64, stat, [64-bit operations are the same as 32-bit]) +]) + +AC_CHECK_FUNC(open64,, [ + AC_DEFINE(open64, open, [64-bit operations are the same as 32-bit]) +]) + +AC_ARG_WITH(libedit, AS_HELP_STRING(--with-libedit, [Compile with libedit support])) +use_libedit= +if test "$with_libedit" = "yes"; then + AC_CHECK_LIB(edit, history_init, [ + AC_CHECK_HEADER([histedit.h], [use_libedit="yes"], + AC_MSG_ERROR( + [Can't find required header files.]))]) +fi +if test "$use_libedit" != "yes"; then + AC_DEFINE([SMALL], 1, [Define if you build with -DSMALL]) +else + export LIBS="$LIBS -ledit" +fi +AC_ARG_ENABLE(lineno, AS_HELP_STRING(--disable-lineno, \ + [Disable LINENO support])) +if test "$enable_lineno" != "no"; then + AC_DEFINE([WITH_LINENO], 1, [Define if you build with -DWITH_LINENO]) +fi +AC_CONFIG_FILES([Makefile src/Makefile]) +AC_OUTPUT diff --git a/shells/dash/files/depcomp b/shells/dash/files/depcomp new file mode 100755 index 0000000000000..25a39e6cd5c82 --- /dev/null +++ b/shells/dash/files/depcomp @@ -0,0 +1,708 @@ +#! /bin/sh +# depcomp - compile a program generating dependencies as side-effects + +scriptversion=2012-03-27.16; # UTC + +# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010, +# 2011, 2012 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + +# Originally written by Alexandre Oliva . + +case $1 in + '') + echo "$0: No command. Try '$0 --help' for more information." 1>&2 + exit 1; + ;; + -h | --h*) + cat <<\EOF +Usage: depcomp [--help] [--version] PROGRAM [ARGS] + +Run PROGRAMS ARGS to compile a file, generating dependencies +as side-effects. + +Environment variables: + depmode Dependency tracking mode. + source Source file read by 'PROGRAMS ARGS'. + object Object file output by 'PROGRAMS ARGS'. + DEPDIR directory where to store dependencies. + depfile Dependency file to output. + tmpdepfile Temporary file to use when outputting dependencies. + libtool Whether libtool is used (yes/no). + +Report bugs to . +EOF + exit $? + ;; + -v | --v*) + echo "depcomp $scriptversion" + exit $? + ;; +esac + +# A tabulation character. +tab=' ' +# A newline character. +nl=' +' + +if test -z "$depmode" || test -z "$source" || test -z "$object"; then + echo "depcomp: Variables source, object and depmode must be set" 1>&2 + exit 1 +fi + +# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po. +depfile=${depfile-`echo "$object" | + sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`} +tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`} + +rm -f "$tmpdepfile" + +# Some modes work just like other modes, but use different flags. We +# parameterize here, but still list the modes in the big case below, +# to make depend.m4 easier to write. Note that we *cannot* use a case +# here, because this file can only contain one case statement. +if test "$depmode" = hp; then + # HP compiler uses -M and no extra arg. + gccflag=-M + depmode=gcc +fi + +if test "$depmode" = dashXmstdout; then + # This is just like dashmstdout with a different argument. + dashmflag=-xM + depmode=dashmstdout +fi + +cygpath_u="cygpath -u -f -" +if test "$depmode" = msvcmsys; then + # This is just like msvisualcpp but w/o cygpath translation. + # Just convert the backslash-escaped backslashes to single forward + # slashes to satisfy depend.m4 + cygpath_u='sed s,\\\\,/,g' + depmode=msvisualcpp +fi + +if test "$depmode" = msvc7msys; then + # This is just like msvc7 but w/o cygpath translation. + # Just convert the backslash-escaped backslashes to single forward + # slashes to satisfy depend.m4 + cygpath_u='sed s,\\\\,/,g' + depmode=msvc7 +fi + +if test "$depmode" = xlc; then + # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations. + gccflag=-qmakedep=gcc,-MF + depmode=gcc +fi + +case "$depmode" in +gcc3) +## gcc 3 implements dependency tracking that does exactly what +## we want. Yay! Note: for some reason libtool 1.4 doesn't like +## it if -MD -MP comes after the -MF stuff. Hmm. +## Unfortunately, FreeBSD c89 acceptance of flags depends upon +## the command line argument order; so add the flags where they +## appear in depend2.am. Note that the slowdown incurred here +## affects only configure: in makefiles, %FASTDEP% shortcuts this. + for arg + do + case $arg in + -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;; + *) set fnord "$@" "$arg" ;; + esac + shift # fnord + shift # $arg + done + "$@" + stat=$? + if test $stat -eq 0; then : + else + rm -f "$tmpdepfile" + exit $stat + fi + mv "$tmpdepfile" "$depfile" + ;; + +gcc) +## There are various ways to get dependency output from gcc. Here's +## why we pick this rather obscure method: +## - Don't want to use -MD because we'd like the dependencies to end +## up in a subdir. Having to rename by hand is ugly. +## (We might end up doing this anyway to support other compilers.) +## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like +## -MM, not -M (despite what the docs say). +## - Using -M directly means running the compiler twice (even worse +## than renaming). + if test -z "$gccflag"; then + gccflag=-MD, + fi + "$@" -Wp,"$gccflag$tmpdepfile" + stat=$? + if test $stat -eq 0; then : + else + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + echo "$object : \\" > "$depfile" + alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz +## The second -e expression handles DOS-style file names with drive letters. + sed -e 's/^[^:]*: / /' \ + -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile" +## This next piece of magic avoids the "deleted header file" problem. +## The problem is that when a header file which appears in a .P file +## is deleted, the dependency causes make to die (because there is +## typically no way to rebuild the header). We avoid this by adding +## dummy dependencies for each header file. Too bad gcc doesn't do +## this for us directly. + tr ' ' "$nl" < "$tmpdepfile" | +## Some versions of gcc put a space before the ':'. On the theory +## that the space means something, we add a space to the output as +## well. hp depmode also adds that space, but also prefixes the VPATH +## to the object. Take care to not repeat it in the output. +## Some versions of the HPUX 10.20 sed can't process this invocation +## correctly. Breaking it into two sed invocations is a workaround. + sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \ + | sed -e 's/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +hp) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +sgi) + if test "$libtool" = yes; then + "$@" "-Wp,-MDupdate,$tmpdepfile" + else + "$@" -MDupdate "$tmpdepfile" + fi + stat=$? + if test $stat -eq 0; then : + else + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + + if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files + echo "$object : \\" > "$depfile" + + # Clip off the initial element (the dependent). Don't try to be + # clever and replace this with sed code, as IRIX sed won't handle + # lines with more than a fixed number of characters (4096 in + # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines; + # the IRIX cc adds comments like '#:fec' to the end of the + # dependency line. + tr ' ' "$nl" < "$tmpdepfile" \ + | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \ + tr "$nl" ' ' >> "$depfile" + echo >> "$depfile" + + # The second pass generates a dummy entry for each header file. + tr ' ' "$nl" < "$tmpdepfile" \ + | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \ + >> "$depfile" + else + # The sourcefile does not contain any dependencies, so just + # store a dummy comment line, to avoid errors with the Makefile + # "include basename.Plo" scheme. + echo "#dummy" > "$depfile" + fi + rm -f "$tmpdepfile" + ;; + +xlc) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +aix) + # The C for AIX Compiler uses -M and outputs the dependencies + # in a .u file. In older versions, this file always lives in the + # current directory. Also, the AIX compiler puts '$object:' at the + # start of each line; $object doesn't have directory information. + # Version 6 uses the directory in both cases. + dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` + test "x$dir" = "x$object" && dir= + base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'` + if test "$libtool" = yes; then + tmpdepfile1=$dir$base.u + tmpdepfile2=$base.u + tmpdepfile3=$dir.libs/$base.u + "$@" -Wc,-M + else + tmpdepfile1=$dir$base.u + tmpdepfile2=$dir$base.u + tmpdepfile3=$dir$base.u + "$@" -M + fi + stat=$? + + if test $stat -eq 0; then : + else + rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" + exit $stat + fi + + for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" + do + test -f "$tmpdepfile" && break + done + if test -f "$tmpdepfile"; then + # Each line is of the form 'foo.o: dependent.h'. + # Do two passes, one to just change these to + # '$object: dependent.h' and one to simply 'dependent.h:'. + sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile" + sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile" + else + # The sourcefile does not contain any dependencies, so just + # store a dummy comment line, to avoid errors with the Makefile + # "include basename.Plo" scheme. + echo "#dummy" > "$depfile" + fi + rm -f "$tmpdepfile" + ;; + +icc) + # Intel's C compiler anf tcc (Tiny C Compiler) understand '-MD -MF file'. + # However on + # $CC -MD -MF foo.d -c -o sub/foo.o sub/foo.c + # ICC 7.0 will fill foo.d with something like + # foo.o: sub/foo.c + # foo.o: sub/foo.h + # which is wrong. We want + # sub/foo.o: sub/foo.c + # sub/foo.o: sub/foo.h + # sub/foo.c: + # sub/foo.h: + # ICC 7.1 will output + # foo.o: sub/foo.c sub/foo.h + # and will wrap long lines using '\': + # foo.o: sub/foo.c ... \ + # sub/foo.h ... \ + # ... + # tcc 0.9.26 (FIXME still under development at the moment of writing) + # will emit a similar output, but also prepend the continuation lines + # with horizontal tabulation characters. + "$@" -MD -MF "$tmpdepfile" + stat=$? + if test $stat -eq 0; then : + else + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + # Each line is of the form 'foo.o: dependent.h', + # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'. + # Do two passes, one to just change these to + # '$object: dependent.h' and one to simply 'dependent.h:'. + sed -e "s/^[ $tab][ $tab]*/ /" -e "s,^[^:]*:,$object :," \ + < "$tmpdepfile" > "$depfile" + sed ' + s/[ '"$tab"'][ '"$tab"']*/ /g + s/^ *// + s/ *\\*$// + s/^[^:]*: *// + /^$/d + /:$/d + s/$/ :/ + ' < "$tmpdepfile" >> "$depfile" + rm -f "$tmpdepfile" + ;; + +hp2) + # The "hp" stanza above does not work with aCC (C++) and HP's ia64 + # compilers, which have integrated preprocessors. The correct option + # to use with these is +Maked; it writes dependencies to a file named + # 'foo.d', which lands next to the object file, wherever that + # happens to be. + # Much of this is similar to the tru64 case; see comments there. + dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` + test "x$dir" = "x$object" && dir= + base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'` + if test "$libtool" = yes; then + tmpdepfile1=$dir$base.d + tmpdepfile2=$dir.libs/$base.d + "$@" -Wc,+Maked + else + tmpdepfile1=$dir$base.d + tmpdepfile2=$dir$base.d + "$@" +Maked + fi + stat=$? + if test $stat -eq 0; then : + else + rm -f "$tmpdepfile1" "$tmpdepfile2" + exit $stat + fi + + for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" + do + test -f "$tmpdepfile" && break + done + if test -f "$tmpdepfile"; then + sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile" + # Add 'dependent.h:' lines. + sed -ne '2,${ + s/^ *// + s/ \\*$// + s/$/:/ + p + }' "$tmpdepfile" >> "$depfile" + else + echo "#dummy" > "$depfile" + fi + rm -f "$tmpdepfile" "$tmpdepfile2" + ;; + +tru64) + # The Tru64 compiler uses -MD to generate dependencies as a side + # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'. + # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put + # dependencies in 'foo.d' instead, so we check for that too. + # Subdirectories are respected. + dir=`echo "$object" | sed -e 's|/[^/]*$|/|'` + test "x$dir" = "x$object" && dir= + base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'` + + if test "$libtool" = yes; then + # With Tru64 cc, shared objects can also be used to make a + # static library. This mechanism is used in libtool 1.4 series to + # handle both shared and static libraries in a single compilation. + # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d. + # + # With libtool 1.5 this exception was removed, and libtool now + # generates 2 separate objects for the 2 libraries. These two + # compilations output dependencies in $dir.libs/$base.o.d and + # in $dir$base.o.d. We have to check for both files, because + # one of the two compilations can be disabled. We should prefer + # $dir$base.o.d over $dir.libs/$base.o.d because the latter is + # automatically cleaned when .libs/ is deleted, while ignoring + # the former would cause a distcleancheck panic. + tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4 + tmpdepfile2=$dir$base.o.d # libtool 1.5 + tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5 + tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504 + "$@" -Wc,-MD + else + tmpdepfile1=$dir$base.o.d + tmpdepfile2=$dir$base.d + tmpdepfile3=$dir$base.d + tmpdepfile4=$dir$base.d + "$@" -MD + fi + + stat=$? + if test $stat -eq 0; then : + else + rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4" + exit $stat + fi + + for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4" + do + test -f "$tmpdepfile" && break + done + if test -f "$tmpdepfile"; then + sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile" + sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile" + else + echo "#dummy" > "$depfile" + fi + rm -f "$tmpdepfile" + ;; + +msvc7) + if test "$libtool" = yes; then + showIncludes=-Wc,-showIncludes + else + showIncludes=-showIncludes + fi + "$@" $showIncludes > "$tmpdepfile" + stat=$? + grep -v '^Note: including file: ' "$tmpdepfile" + if test "$stat" = 0; then : + else + rm -f "$tmpdepfile" + exit $stat + fi + rm -f "$depfile" + echo "$object : \\" > "$depfile" + # The first sed program below extracts the file names and escapes + # backslashes for cygpath. The second sed program outputs the file + # name when reading, but also accumulates all include files in the + # hold buffer in order to output them again at the end. This only + # works with sed implementations that can handle large buffers. + sed < "$tmpdepfile" -n ' +/^Note: including file: *\(.*\)/ { + s//\1/ + s/\\/\\\\/g + p +}' | $cygpath_u | sort -u | sed -n ' +s/ /\\ /g +s/\(.*\)/'"$tab"'\1 \\/p +s/.\(.*\) \\/\1:/ +H +$ { + s/.*/'"$tab"'/ + G + p +}' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +msvc7msys) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +#nosideeffect) + # This comment above is used by automake to tell side-effect + # dependency tracking mechanisms from slower ones. + +dashmstdout) + # Important note: in order to support this mode, a compiler *must* + # always write the preprocessed file to stdout, regardless of -o. + "$@" || exit $? + + # Remove the call to Libtool. + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + + # Remove '-o $object'. + IFS=" " + for arg + do + case $arg in + -o) + shift + ;; + $object) + shift + ;; + *) + set fnord "$@" "$arg" + shift # fnord + shift # $arg + ;; + esac + done + + test -z "$dashmflag" && dashmflag=-M + # Require at least two characters before searching for ':' + # in the target name. This is to cope with DOS-style filenames: + # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise. + "$@" $dashmflag | + sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile" + rm -f "$depfile" + cat < "$tmpdepfile" > "$depfile" + tr ' ' "$nl" < "$tmpdepfile" | \ +## Some versions of the HPUX 10.20 sed can't process this invocation +## correctly. Breaking it into two sed invocations is a workaround. + sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +dashXmstdout) + # This case only exists to satisfy depend.m4. It is never actually + # run, as this mode is specially recognized in the preamble. + exit 1 + ;; + +makedepend) + "$@" || exit $? + # Remove any Libtool call + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + # X makedepend + shift + cleared=no eat=no + for arg + do + case $cleared in + no) + set ""; shift + cleared=yes ;; + esac + if test $eat = yes; then + eat=no + continue + fi + case "$arg" in + -D*|-I*) + set fnord "$@" "$arg"; shift ;; + # Strip any option that makedepend may not understand. Remove + # the object too, otherwise makedepend will parse it as a source file. + -arch) + eat=yes ;; + -*|$object) + ;; + *) + set fnord "$@" "$arg"; shift ;; + esac + done + obj_suffix=`echo "$object" | sed 's/^.*\././'` + touch "$tmpdepfile" + ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@" + rm -f "$depfile" + # makedepend may prepend the VPATH from the source file name to the object. + # No need to regex-escape $object, excess matching of '.' is harmless. + sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile" + sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \ +## Some versions of the HPUX 10.20 sed can't process this invocation +## correctly. Breaking it into two sed invocations is a workaround. + sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" "$tmpdepfile".bak + ;; + +cpp) + # Important note: in order to support this mode, a compiler *must* + # always write the preprocessed file to stdout. + "$@" || exit $? + + # Remove the call to Libtool. + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + + # Remove '-o $object'. + IFS=" " + for arg + do + case $arg in + -o) + shift + ;; + $object) + shift + ;; + *) + set fnord "$@" "$arg" + shift # fnord + shift # $arg + ;; + esac + done + + "$@" -E | + sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \ + -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' | + sed '$ s: \\$::' > "$tmpdepfile" + rm -f "$depfile" + echo "$object : \\" > "$depfile" + cat < "$tmpdepfile" >> "$depfile" + sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +msvisualcpp) + # Important note: in order to support this mode, a compiler *must* + # always write the preprocessed file to stdout. + "$@" || exit $? + + # Remove the call to Libtool. + if test "$libtool" = yes; then + while test "X$1" != 'X--mode=compile'; do + shift + done + shift + fi + + IFS=" " + for arg + do + case "$arg" in + -o) + shift + ;; + $object) + shift + ;; + "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI") + set fnord "$@" + shift + shift + ;; + *) + set fnord "$@" "$arg" + shift + shift + ;; + esac + done + "$@" -E 2>/dev/null | + sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile" + rm -f "$depfile" + echo "$object : \\" > "$depfile" + sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile" + echo "$tab" >> "$depfile" + sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile" + rm -f "$tmpdepfile" + ;; + +msvcmsys) + # This case exists only to let depend.m4 do its work. It works by + # looking at the text of this script. This case will never be run, + # since it is checked for above. + exit 1 + ;; + +none) + exec "$@" + ;; + +*) + echo "Unknown depmode $depmode" 1>&2 + exit 1 + ;; +esac + +exit 0 + +# Local Variables: +# mode: shell-script +# sh-indentation: 2 +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/shells/dash/files/install-sh b/shells/dash/files/install-sh new file mode 100755 index 0000000000000..a9244eb078653 --- /dev/null +++ b/shells/dash/files/install-sh @@ -0,0 +1,527 @@ +#!/bin/sh +# install - install a program, script, or datafile + +scriptversion=2011-01-19.21; # UTC + +# This originates from X11R5 (mit/util/scripts/install.sh), which was +# later released in X11R6 (xc/config/util/install.sh) with the +# following copyright and license. +# +# Copyright (C) 1994 X Consortium +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to +# deal in the Software without restriction, including without limitation the +# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +# sell copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- +# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +# +# Except as contained in this notice, the name of the X Consortium shall not +# be used in advertising or otherwise to promote the sale, use or other deal- +# ings in this Software without prior written authorization from the X Consor- +# tium. +# +# +# FSF changes to this file are in the public domain. +# +# Calling this script install-sh is preferred over install.sh, to prevent +# `make' implicit rules from creating a file called install from it +# when there is no Makefile. +# +# This script is compatible with the BSD install script, but was written +# from scratch. + +nl=' +' +IFS=" "" $nl" + +# set DOITPROG to echo to test this script + +# Don't use :- since 4.3BSD and earlier shells don't like it. +doit=${DOITPROG-} +if test -z "$doit"; then + doit_exec=exec +else + doit_exec=$doit +fi + +# Put in absolute file names if you don't have them in your path; +# or use environment vars. + +chgrpprog=${CHGRPPROG-chgrp} +chmodprog=${CHMODPROG-chmod} +chownprog=${CHOWNPROG-chown} +cmpprog=${CMPPROG-cmp} +cpprog=${CPPROG-cp} +mkdirprog=${MKDIRPROG-mkdir} +mvprog=${MVPROG-mv} +rmprog=${RMPROG-rm} +stripprog=${STRIPPROG-strip} + +posix_glob='?' +initialize_posix_glob=' + test "$posix_glob" != "?" || { + if (set -f) 2>/dev/null; then + posix_glob= + else + posix_glob=: + fi + } +' + +posix_mkdir= + +# Desired mode of installed file. +mode=0755 + +chgrpcmd= +chmodcmd=$chmodprog +chowncmd= +mvcmd=$mvprog +rmcmd="$rmprog -f" +stripcmd= + +src= +dst= +dir_arg= +dst_arg= + +copy_on_change=false +no_target_directory= + +usage="\ +Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE + or: $0 [OPTION]... SRCFILES... DIRECTORY + or: $0 [OPTION]... -t DIRECTORY SRCFILES... + or: $0 [OPTION]... -d DIRECTORIES... + +In the 1st form, copy SRCFILE to DSTFILE. +In the 2nd and 3rd, copy all SRCFILES to DIRECTORY. +In the 4th, create DIRECTORIES. + +Options: + --help display this help and exit. + --version display version info and exit. + + -c (ignored) + -C install only if different (preserve the last data modification time) + -d create directories instead of installing files. + -g GROUP $chgrpprog installed files to GROUP. + -m MODE $chmodprog installed files to MODE. + -o USER $chownprog installed files to USER. + -s $stripprog installed files. + -t DIRECTORY install into DIRECTORY. + -T report an error if DSTFILE is a directory. + +Environment variables override the default commands: + CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG + RMPROG STRIPPROG +" + +while test $# -ne 0; do + case $1 in + -c) ;; + + -C) copy_on_change=true;; + + -d) dir_arg=true;; + + -g) chgrpcmd="$chgrpprog $2" + shift;; + + --help) echo "$usage"; exit $?;; + + -m) mode=$2 + case $mode in + *' '* | *' '* | *' +'* | *'*'* | *'?'* | *'['*) + echo "$0: invalid mode: $mode" >&2 + exit 1;; + esac + shift;; + + -o) chowncmd="$chownprog $2" + shift;; + + -s) stripcmd=$stripprog;; + + -t) dst_arg=$2 + # Protect names problematic for `test' and other utilities. + case $dst_arg in + -* | [=\(\)!]) dst_arg=./$dst_arg;; + esac + shift;; + + -T) no_target_directory=true;; + + --version) echo "$0 $scriptversion"; exit $?;; + + --) shift + break;; + + -*) echo "$0: invalid option: $1" >&2 + exit 1;; + + *) break;; + esac + shift +done + +if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then + # When -d is used, all remaining arguments are directories to create. + # When -t is used, the destination is already specified. + # Otherwise, the last argument is the destination. Remove it from $@. + for arg + do + if test -n "$dst_arg"; then + # $@ is not empty: it contains at least $arg. + set fnord "$@" "$dst_arg" + shift # fnord + fi + shift # arg + dst_arg=$arg + # Protect names problematic for `test' and other utilities. + case $dst_arg in + -* | [=\(\)!]) dst_arg=./$dst_arg;; + esac + done +fi + +if test $# -eq 0; then + if test -z "$dir_arg"; then + echo "$0: no input file specified." >&2 + exit 1 + fi + # It's OK to call `install-sh -d' without argument. + # This can happen when creating conditional directories. + exit 0 +fi + +if test -z "$dir_arg"; then + do_exit='(exit $ret); exit $ret' + trap "ret=129; $do_exit" 1 + trap "ret=130; $do_exit" 2 + trap "ret=141; $do_exit" 13 + trap "ret=143; $do_exit" 15 + + # Set umask so as not to create temps with too-generous modes. + # However, 'strip' requires both read and write access to temps. + case $mode in + # Optimize common cases. + *644) cp_umask=133;; + *755) cp_umask=22;; + + *[0-7]) + if test -z "$stripcmd"; then + u_plus_rw= + else + u_plus_rw='% 200' + fi + cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;; + *) + if test -z "$stripcmd"; then + u_plus_rw= + else + u_plus_rw=,u+rw + fi + cp_umask=$mode$u_plus_rw;; + esac +fi + +for src +do + # Protect names problematic for `test' and other utilities. + case $src in + -* | [=\(\)!]) src=./$src;; + esac + + if test -n "$dir_arg"; then + dst=$src + dstdir=$dst + test -d "$dstdir" + dstdir_status=$? + else + + # Waiting for this to be detected by the "$cpprog $src $dsttmp" command + # might cause directories to be created, which would be especially bad + # if $src (and thus $dsttmp) contains '*'. + if test ! -f "$src" && test ! -d "$src"; then + echo "$0: $src does not exist." >&2 + exit 1 + fi + + if test -z "$dst_arg"; then + echo "$0: no destination specified." >&2 + exit 1 + fi + dst=$dst_arg + + # If destination is a directory, append the input filename; won't work + # if double slashes aren't ignored. + if test -d "$dst"; then + if test -n "$no_target_directory"; then + echo "$0: $dst_arg: Is a directory" >&2 + exit 1 + fi + dstdir=$dst + dst=$dstdir/`basename "$src"` + dstdir_status=0 + else + # Prefer dirname, but fall back on a substitute if dirname fails. + dstdir=` + (dirname "$dst") 2>/dev/null || + expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$dst" : 'X\(//\)[^/]' \| \ + X"$dst" : 'X\(//\)$' \| \ + X"$dst" : 'X\(/\)' \| . 2>/dev/null || + echo X"$dst" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q' + ` + + test -d "$dstdir" + dstdir_status=$? + fi + fi + + obsolete_mkdir_used=false + + if test $dstdir_status != 0; then + case $posix_mkdir in + '') + # Create intermediate dirs using mode 755 as modified by the umask. + # This is like FreeBSD 'install' as of 1997-10-28. + umask=`umask` + case $stripcmd.$umask in + # Optimize common cases. + *[2367][2367]) mkdir_umask=$umask;; + .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;; + + *[0-7]) + mkdir_umask=`expr $umask + 22 \ + - $umask % 100 % 40 + $umask % 20 \ + - $umask % 10 % 4 + $umask % 2 + `;; + *) mkdir_umask=$umask,go-w;; + esac + + # With -d, create the new directory with the user-specified mode. + # Otherwise, rely on $mkdir_umask. + if test -n "$dir_arg"; then + mkdir_mode=-m$mode + else + mkdir_mode= + fi + + posix_mkdir=false + case $umask in + *[123567][0-7][0-7]) + # POSIX mkdir -p sets u+wx bits regardless of umask, which + # is incompatible with FreeBSD 'install' when (umask & 300) != 0. + ;; + *) + tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$ + trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0 + + if (umask $mkdir_umask && + exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1 + then + if test -z "$dir_arg" || { + # Check for POSIX incompatibilities with -m. + # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or + # other-writeable bit of parent directory when it shouldn't. + # FreeBSD 6.1 mkdir -m -p sets mode of existing directory. + ls_ld_tmpdir=`ls -ld "$tmpdir"` + case $ls_ld_tmpdir in + d????-?r-*) different_mode=700;; + d????-?--*) different_mode=755;; + *) false;; + esac && + $mkdirprog -m$different_mode -p -- "$tmpdir" && { + ls_ld_tmpdir_1=`ls -ld "$tmpdir"` + test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1" + } + } + then posix_mkdir=: + fi + rmdir "$tmpdir/d" "$tmpdir" + else + # Remove any dirs left behind by ancient mkdir implementations. + rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null + fi + trap '' 0;; + esac;; + esac + + if + $posix_mkdir && ( + umask $mkdir_umask && + $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir" + ) + then : + else + + # The umask is ridiculous, or mkdir does not conform to POSIX, + # or it failed possibly due to a race condition. Create the + # directory the slow way, step by step, checking for races as we go. + + case $dstdir in + /*) prefix='/';; + [-=\(\)!]*) prefix='./';; + *) prefix='';; + esac + + eval "$initialize_posix_glob" + + oIFS=$IFS + IFS=/ + $posix_glob set -f + set fnord $dstdir + shift + $posix_glob set +f + IFS=$oIFS + + prefixes= + + for d + do + test X"$d" = X && continue + + prefix=$prefix$d + if test -d "$prefix"; then + prefixes= + else + if $posix_mkdir; then + (umask=$mkdir_umask && + $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break + # Don't fail if two instances are running concurrently. + test -d "$prefix" || exit 1 + else + case $prefix in + *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;; + *) qprefix=$prefix;; + esac + prefixes="$prefixes '$qprefix'" + fi + fi + prefix=$prefix/ + done + + if test -n "$prefixes"; then + # Don't fail if two instances are running concurrently. + (umask $mkdir_umask && + eval "\$doit_exec \$mkdirprog $prefixes") || + test -d "$dstdir" || exit 1 + obsolete_mkdir_used=true + fi + fi + fi + + if test -n "$dir_arg"; then + { test -z "$chowncmd" || $doit $chowncmd "$dst"; } && + { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } && + { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false || + test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1 + else + + # Make a couple of temp file names in the proper directory. + dsttmp=$dstdir/_inst.$$_ + rmtmp=$dstdir/_rm.$$_ + + # Trap to clean up those temp files at exit. + trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0 + + # Copy the file name to the temp name. + (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") && + + # and set any options; do chmod last to preserve setuid bits. + # + # If any of these fail, we abort the whole thing. If we want to + # ignore errors from any of these, just make sure not to ignore + # errors from the above "$doit $cpprog $src $dsttmp" command. + # + { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } && + { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } && + { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } && + { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } && + + # If -C, don't bother to copy if it wouldn't change the file. + if $copy_on_change && + old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` && + new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` && + + eval "$initialize_posix_glob" && + $posix_glob set -f && + set X $old && old=:$2:$4:$5:$6 && + set X $new && new=:$2:$4:$5:$6 && + $posix_glob set +f && + + test "$old" = "$new" && + $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1 + then + rm -f "$dsttmp" + else + # Rename the file to the real destination. + $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null || + + # The rename failed, perhaps because mv can't rename something else + # to itself, or perhaps because mv is so ancient that it does not + # support -f. + { + # Now remove or move aside any old file at destination location. + # We try this two ways since rm can't unlink itself on some + # systems and the destination file might be busy for other + # reasons. In this case, the final cleanup might fail but the new + # file should still install successfully. + { + test ! -f "$dst" || + $doit $rmcmd -f "$dst" 2>/dev/null || + { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null && + { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; } + } || + { echo "$0: cannot unlink or rename $dst" >&2 + (exit 1); exit 1 + } + } && + + # Now rename the file to the real destination. + $doit $mvcmd "$dsttmp" "$dst" + } + fi || exit 1 + + trap '' 0 + fi +done + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/shells/dash/files/missing b/shells/dash/files/missing new file mode 100755 index 0000000000000..86a8fc31e3c2a --- /dev/null +++ b/shells/dash/files/missing @@ -0,0 +1,331 @@ +#! /bin/sh +# Common stub for a few missing GNU programs while installing. + +scriptversion=2012-01-06.13; # UTC + +# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006, +# 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. +# Originally by Fran,cois Pinard , 1996. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + +if test $# -eq 0; then + echo 1>&2 "Try \`$0 --help' for more information" + exit 1 +fi + +run=: +sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p' +sed_minuso='s/.* -o \([^ ]*\).*/\1/p' + +# In the cases where this matters, `missing' is being run in the +# srcdir already. +if test -f configure.ac; then + configure_ac=configure.ac +else + configure_ac=configure.in +fi + +msg="missing on your system" + +case $1 in +--run) + # Try to run requested program, and just exit if it succeeds. + run= + shift + "$@" && exit 0 + # Exit code 63 means version mismatch. This often happens + # when the user try to use an ancient version of a tool on + # a file that requires a minimum version. In this case we + # we should proceed has if the program had been absent, or + # if --run hadn't been passed. + if test $? = 63; then + run=: + msg="probably too old" + fi + ;; + + -h|--h|--he|--hel|--help) + echo "\ +$0 [OPTION]... PROGRAM [ARGUMENT]... + +Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an +error status if there is no known handling for PROGRAM. + +Options: + -h, --help display this help and exit + -v, --version output version information and exit + --run try to run the given command, and emulate it if it fails + +Supported PROGRAM values: + aclocal touch file \`aclocal.m4' + autoconf touch file \`configure' + autoheader touch file \`config.h.in' + autom4te touch the output file, or create a stub one + automake touch all \`Makefile.in' files + bison create \`y.tab.[ch]', if possible, from existing .[ch] + flex create \`lex.yy.c', if possible, from existing .c + help2man touch the output file + lex create \`lex.yy.c', if possible, from existing .c + makeinfo touch the output file + yacc create \`y.tab.[ch]', if possible, from existing .[ch] + +Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and +\`g' are ignored when checking the name. + +Send bug reports to ." + exit $? + ;; + + -v|--v|--ve|--ver|--vers|--versi|--versio|--version) + echo "missing $scriptversion (GNU Automake)" + exit $? + ;; + + -*) + echo 1>&2 "$0: Unknown \`$1' option" + echo 1>&2 "Try \`$0 --help' for more information" + exit 1 + ;; + +esac + +# normalize program name to check for. +program=`echo "$1" | sed ' + s/^gnu-//; t + s/^gnu//; t + s/^g//; t'` + +# Now exit if we have it, but it failed. Also exit now if we +# don't have it and --version was passed (most likely to detect +# the program). This is about non-GNU programs, so use $1 not +# $program. +case $1 in + lex*|yacc*) + # Not GNU programs, they don't have --version. + ;; + + *) + if test -z "$run" && ($1 --version) > /dev/null 2>&1; then + # We have it, but it failed. + exit 1 + elif test "x$2" = "x--version" || test "x$2" = "x--help"; then + # Could not run --version or --help. This is probably someone + # running `$TOOL --version' or `$TOOL --help' to check whether + # $TOOL exists and not knowing $TOOL uses missing. + exit 1 + fi + ;; +esac + +# If it does not exist, or fails to run (possibly an outdated version), +# try to emulate it. +case $program in + aclocal*) + echo 1>&2 "\ +WARNING: \`$1' is $msg. You should only need it if + you modified \`acinclude.m4' or \`${configure_ac}'. You might want + to install the \`Automake' and \`Perl' packages. Grab them from + any GNU archive site." + touch aclocal.m4 + ;; + + autoconf*) + echo 1>&2 "\ +WARNING: \`$1' is $msg. You should only need it if + you modified \`${configure_ac}'. You might want to install the + \`Autoconf' and \`GNU m4' packages. Grab them from any GNU + archive site." + touch configure + ;; + + autoheader*) + echo 1>&2 "\ +WARNING: \`$1' is $msg. You should only need it if + you modified \`acconfig.h' or \`${configure_ac}'. You might want + to install the \`Autoconf' and \`GNU m4' packages. Grab them + from any GNU archive site." + files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}` + test -z "$files" && files="config.h" + touch_files= + for f in $files; do + case $f in + *:*) touch_files="$touch_files "`echo "$f" | + sed -e 's/^[^:]*://' -e 's/:.*//'`;; + *) touch_files="$touch_files $f.in";; + esac + done + touch $touch_files + ;; + + automake*) + echo 1>&2 "\ +WARNING: \`$1' is $msg. You should only need it if + you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'. + You might want to install the \`Automake' and \`Perl' packages. + Grab them from any GNU archive site." + find . -type f -name Makefile.am -print | + sed 's/\.am$/.in/' | + while read f; do touch "$f"; done + ;; + + autom4te*) + echo 1>&2 "\ +WARNING: \`$1' is needed, but is $msg. + You might have modified some files without having the + proper tools for further handling them. + You can get \`$1' as part of \`Autoconf' from any GNU + archive site." + + file=`echo "$*" | sed -n "$sed_output"` + test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"` + if test -f "$file"; then + touch $file + else + test -z "$file" || exec >$file + echo "#! /bin/sh" + echo "# Created by GNU Automake missing as a replacement of" + echo "# $ $@" + echo "exit 0" + chmod +x $file + exit 1 + fi + ;; + + bison*|yacc*) + echo 1>&2 "\ +WARNING: \`$1' $msg. You should only need it if + you modified a \`.y' file. You may need the \`Bison' package + in order for those modifications to take effect. You can get + \`Bison' from any GNU archive site." + rm -f y.tab.c y.tab.h + if test $# -ne 1; then + eval LASTARG=\${$#} + case $LASTARG in + *.y) + SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'` + if test -f "$SRCFILE"; then + cp "$SRCFILE" y.tab.c + fi + SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'` + if test -f "$SRCFILE"; then + cp "$SRCFILE" y.tab.h + fi + ;; + esac + fi + if test ! -f y.tab.h; then + echo >y.tab.h + fi + if test ! -f y.tab.c; then + echo 'main() { return 0; }' >y.tab.c + fi + ;; + + lex*|flex*) + echo 1>&2 "\ +WARNING: \`$1' is $msg. You should only need it if + you modified a \`.l' file. You may need the \`Flex' package + in order for those modifications to take effect. You can get + \`Flex' from any GNU archive site." + rm -f lex.yy.c + if test $# -ne 1; then + eval LASTARG=\${$#} + case $LASTARG in + *.l) + SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'` + if test -f "$SRCFILE"; then + cp "$SRCFILE" lex.yy.c + fi + ;; + esac + fi + if test ! -f lex.yy.c; then + echo 'main() { return 0; }' >lex.yy.c + fi + ;; + + help2man*) + echo 1>&2 "\ +WARNING: \`$1' is $msg. You should only need it if + you modified a dependency of a manual page. You may need the + \`Help2man' package in order for those modifications to take + effect. You can get \`Help2man' from any GNU archive site." + + file=`echo "$*" | sed -n "$sed_output"` + test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"` + if test -f "$file"; then + touch $file + else + test -z "$file" || exec >$file + echo ".ab help2man is required to generate this page" + exit $? + fi + ;; + + makeinfo*) + echo 1>&2 "\ +WARNING: \`$1' is $msg. You should only need it if + you modified a \`.texi' or \`.texinfo' file, or any other file + indirectly affecting the aspect of the manual. The spurious + call might also be the consequence of using a buggy \`make' (AIX, + DU, IRIX). You might want to install the \`Texinfo' package or + the \`GNU make' package. Grab either from any GNU archive site." + # The file to touch is that specified with -o ... + file=`echo "$*" | sed -n "$sed_output"` + test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"` + if test -z "$file"; then + # ... or it is the one specified with @setfilename ... + infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'` + file=`sed -n ' + /^@setfilename/{ + s/.* \([^ ]*\) *$/\1/ + p + q + }' $infile` + # ... or it is derived from the source name (dir/f.texi becomes f.info) + test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info + fi + # If the file does not exist, the user really needs makeinfo; + # let's fail without touching anything. + test -f $file || exit 1 + touch $file + ;; + + *) + echo 1>&2 "\ +WARNING: \`$1' is needed, and is $msg. + You might have modified some files without having the + proper tools for further handling them. Check the \`README' file, + it often tells you about the needed prerequisites for installing + this package. You may also peek at any GNU archive site, in case + some other package would contain this missing \`$1' program." + exit 1 + ;; +esac + +exit 0 + +# Local variables: +# eval: (add-hook 'write-file-hooks 'time-stamp) +# time-stamp-start: "scriptversion=" +# time-stamp-format: "%:y-%02m-%02d.%02H" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: diff --git a/shells/dash/files/src/Makefile.am b/shells/dash/files/src/Makefile.am new file mode 100644 index 0000000000000..2a37381ff689a --- /dev/null +++ b/shells/dash/files/src/Makefile.am @@ -0,0 +1,72 @@ +AM_YFLAGS = -d + +COMMON_CFLAGS = -Wall +COMMON_CPPFLAGS = \ + -include $(top_builddir)/config.h \ + -DBSD=1 -DSHELL \ + -DIFS_BROKEN + +AM_CFLAGS = $(COMMON_CFLAGS) +AM_CPPFLAGS = $(COMMON_CPPFLAGS) +AM_CFLAGS_FOR_BUILD = -g -O2 $(COMMON_CFLAGS) +AM_CPPFLAGS_FOR_BUILD = $(COMMON_CPPFLAGS) + +COMPILE_FOR_BUILD = \ + $(CC_FOR_BUILD) $(DEFAULT_INCLUDES) $(AM_CPPFLAGS_FOR_BUILD) \ + $(CPPFLAGS_FOR_BUILD) \ + $(AM_CFLAGS_FOR_BUILD) $(CFLAGS_FOR_BUILD) + +bin_PROGRAMS = dash + +dash_CFILES = \ + alias.c arith_yacc.c arith_yylex.c cd.c error.c eval.c exec.c expand.c \ + histedit.c input.c jobs.c mail.c main.c memalloc.c miscbltin.c \ + mystring.c options.c parser.c redir.c show.c trap.c output.c \ + bltin/printf.c system.c bltin/test.c bltin/times.c var.c +dash_SOURCES = \ + $(dash_CFILES) \ + alias.h arith_yacc.h bltin/bltin.h cd.h error.h eval.h exec.h \ + expand.h hetio.h \ + init.h input.h jobs.h machdep.h mail.h main.h memalloc.h miscbltin.h \ + myhistedit.h mystring.h options.h output.h parser.h redir.h shell.h \ + show.h system.h trap.h var.h +dash_LDADD = builtins.o init.o nodes.o signames.o syntax.o + +HELPERS = mkinit mksyntax mknodes mksignames + +BUILT_SOURCES = builtins.h nodes.h syntax.h token.h token_vars.h +CLEANFILES = \ + $(BUILT_SOURCES) $(patsubst %.o,%.c,$(dash_LDADD)) \ + $(HELPERS) builtins.def + +man_MANS = dash.1 +EXTRA_DIST = \ + $(man_MANS) \ + mktokens mkbuiltins builtins.def.in mkinit.c \ + mknodes.c nodetypes nodes.c.pat mksyntax.c mksignames.c + +token.h token_vars.h: mktokens + sh $^ + +builtins.def: builtins.def.in $(top_builddir)/config.h + $(COMPILE) -E -x c -o $@ $< + +builtins.c builtins.h: mkbuiltins builtins.def + sh $^ + +init.c: mkinit $(dash_CFILES) + ./$^ + +nodes.c nodes.h: mknodes nodetypes nodes.c.pat + ./$^ + +syntax.c syntax.h: mksyntax + ./$^ + +signames.c: mksignames + ./$^ + +mksyntax: token.h + +$(HELPERS): %: %.c + $(COMPILE_FOR_BUILD) -o $@ $< diff --git a/shells/dash/files/src/Makefile.in b/shells/dash/files/src/Makefile.in new file mode 100644 index 0000000000000..93fdf518b54d7 --- /dev/null +++ b/shells/dash/files/src/Makefile.in @@ -0,0 +1,721 @@ +# Makefile.in generated by automake 1.11.6 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software +# Foundation, Inc. +# This Makefile.in is free software; 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All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include "shell.h" +#include "input.h" +#include "output.h" +#include "error.h" +#include "memalloc.h" +#include "mystring.h" +#include "alias.h" +#include "options.h" /* XXX for argptr (should remove?) */ + +#define ATABSIZE 39 + +struct alias *atab[ATABSIZE]; + +STATIC void setalias(const char *, const char *); +STATIC struct alias *freealias(struct alias *); +STATIC struct alias **__lookupalias(const char *); + +STATIC +void +setalias(const char *name, const char *val) +{ + struct alias *ap, **app; + + app = __lookupalias(name); + ap = *app; + INTOFF; + if (ap) { + if (!(ap->flag & ALIASINUSE)) { + ckfree(ap->val); + } + ap->val = savestr(val); + ap->flag &= ~ALIASDEAD; + } else { + /* not found */ + ap = ckmalloc(sizeof (struct alias)); + ap->name = savestr(name); + ap->val = savestr(val); + ap->flag = 0; + ap->next = 0; + *app = ap; + } + INTON; +} + +int +unalias(const char *name) +{ + struct alias **app; + + app = __lookupalias(name); + + if (*app) { + INTOFF; + *app = freealias(*app); + INTON; + return (0); + } + + return (1); +} + +void +rmaliases(void) +{ + struct alias *ap, **app; + int i; + + INTOFF; + for (i = 0; i < ATABSIZE; i++) { + app = &atab[i]; + for (ap = *app; ap; ap = *app) { + *app = freealias(*app); + if (ap == *app) { + app = &ap->next; + } + } + } + INTON; +} + +struct alias * +lookupalias(const char *name, int check) +{ + struct alias *ap = *__lookupalias(name); + + if (check && ap && (ap->flag & ALIASINUSE)) + return (NULL); + return (ap); +} + +/* + * TODO - sort output + */ +int +aliascmd(int argc, char **argv) +{ + char *n, *v; + int ret = 0; + struct alias *ap; + + if (argc == 1) { + int i; + + for (i = 0; i < ATABSIZE; i++) + for (ap = atab[i]; ap; ap = ap->next) { + printalias(ap); + } + return (0); + } + while ((n = *++argv) != NULL) { + if ((v = strchr(n+1, '=')) == NULL) { /* n+1: funny ksh stuff */ + if ((ap = *__lookupalias(n)) == NULL) { + outfmt(out2, "%s: %s not found\n", "alias", n); + ret = 1; + } else + printalias(ap); + } else { + *v++ = '\0'; + setalias(n, v); + } + } + + return (ret); +} + +int +unaliascmd(int argc, char **argv) +{ + int i; + + while ((i = nextopt("a")) != '\0') { + if (i == 'a') { + rmaliases(); + return (0); + } + } + for (i = 0; *argptr; argptr++) { + if (unalias(*argptr)) { + outfmt(out2, "%s: %s not found\n", "unalias", *argptr); + i = 1; + } + } + + return (i); +} + +STATIC struct alias * +freealias(struct alias *ap) { + struct alias *next; + + if (ap->flag & ALIASINUSE) { + ap->flag |= ALIASDEAD; + return ap; + } + + next = ap->next; + ckfree(ap->name); + ckfree(ap->val); + ckfree(ap); + return next; +} + +void +printalias(const struct alias *ap) { + out1fmt("%s=%s\n", ap->name, single_quote(ap->val)); +} + +STATIC struct alias ** +__lookupalias(const char *name) { + unsigned int hashval; + struct alias **app; + const char *p; + unsigned int ch; + + p = name; + + ch = (unsigned char)*p; + hashval = ch << 4; + while (ch) { + hashval += ch; + ch = (unsigned char)*++p; + } + app = &atab[hashval % ATABSIZE]; + + for (; *app; app = &(*app)->next) { + if (equal(name, (*app)->name)) { + break; + } + } + + return app; +} diff --git a/shells/dash/files/src/alias.h b/shells/dash/files/src/alias.h new file mode 100644 index 0000000000000..fb841d649c5df --- /dev/null +++ b/shells/dash/files/src/alias.h @@ -0,0 +1,52 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)alias.h 8.2 (Berkeley) 5/4/95 + */ + +#define ALIASINUSE 1 +#define ALIASDEAD 2 + +struct alias { + struct alias *next; + char *name; + char *val; + int flag; +}; + +struct alias *lookupalias(const char *, int); +int aliascmd(int, char **); +int unaliascmd(int, char **); +void rmaliases(void); +int unalias(const char *); +void printalias(const struct alias *); diff --git a/shells/dash/files/src/arith_yacc.c b/shells/dash/files/src/arith_yacc.c new file mode 100644 index 0000000000000..1a087c32ba870 --- /dev/null +++ b/shells/dash/files/src/arith_yacc.c @@ -0,0 +1,304 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 2007 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include "arith_yacc.h" +#include "expand.h" +#include "shell.h" +#include "error.h" +#include "output.h" +#include "var.h" + +#if ARITH_BOR + 11 != ARITH_BORASS || ARITH_ASS + 11 != ARITH_EQ +#error Arithmetic tokens are out of order. +#endif + +static const char *arith_startbuf; + +const char *arith_buf; +union yystype yylval; + +static int last_token; + +#define ARITH_PRECEDENCE(op, prec) [op - ARITH_BINOP_MIN] = prec + +static const char prec[ARITH_BINOP_MAX - ARITH_BINOP_MIN] = { + ARITH_PRECEDENCE(ARITH_MUL, 0), + ARITH_PRECEDENCE(ARITH_DIV, 0), + ARITH_PRECEDENCE(ARITH_REM, 0), + ARITH_PRECEDENCE(ARITH_ADD, 1), + ARITH_PRECEDENCE(ARITH_SUB, 1), + ARITH_PRECEDENCE(ARITH_LSHIFT, 2), + ARITH_PRECEDENCE(ARITH_RSHIFT, 2), + ARITH_PRECEDENCE(ARITH_LT, 3), + ARITH_PRECEDENCE(ARITH_LE, 3), + ARITH_PRECEDENCE(ARITH_GT, 3), + ARITH_PRECEDENCE(ARITH_GE, 3), + ARITH_PRECEDENCE(ARITH_EQ, 4), + ARITH_PRECEDENCE(ARITH_NE, 4), + ARITH_PRECEDENCE(ARITH_BAND, 5), + ARITH_PRECEDENCE(ARITH_BXOR, 6), + ARITH_PRECEDENCE(ARITH_BOR, 7), +}; + +#define ARITH_MAX_PREC 8 + +static void yyerror(const char *s) __attribute__ ((noreturn)); +static void yyerror(const char *s) +{ + sh_error("arithmetic expression: %s: \"%s\"", s, arith_startbuf); + /* NOTREACHED */ +} + +static inline int arith_prec(int op) +{ + return prec[op - ARITH_BINOP_MIN]; +} + +static inline int higher_prec(int op1, int op2) +{ + return arith_prec(op1) < arith_prec(op2); +} + +static intmax_t do_binop(int op, intmax_t a, intmax_t b) +{ + switch (op) { + default: + case ARITH_REM: + case ARITH_DIV: + if (!b) + yyerror("division by zero"); + return op == ARITH_REM ? a % b : a / b; + case ARITH_MUL: + return a * b; + case ARITH_ADD: + return a + b; + case ARITH_SUB: + return a - b; + case ARITH_LSHIFT: + return a << b; + case ARITH_RSHIFT: + return a >> b; + case ARITH_LT: + return a < b; + case ARITH_LE: + return a <= b; + case ARITH_GT: + return a > b; + case ARITH_GE: + return a >= b; + case ARITH_EQ: + return a == b; + case ARITH_NE: + return a != b; + case ARITH_BAND: + return a & b; + case ARITH_BXOR: + return a ^ b; + case ARITH_BOR: + return a | b; + } +} + +static intmax_t assignment(int var, int noeval); + +static intmax_t primary(int token, union yystype *val, int op, int noeval) +{ + intmax_t result; + +again: + switch (token) { + case ARITH_LPAREN: + result = assignment(op, noeval); + if (last_token != ARITH_RPAREN) + yyerror("expecting ')'"); + last_token = yylex(); + return result; + case ARITH_NUM: + last_token = op; + return val->val; + case ARITH_VAR: + last_token = op; + return noeval ? val->val : lookupvarint(val->name); + case ARITH_ADD: + token = op; + *val = yylval; + op = yylex(); + goto again; + case ARITH_SUB: + *val = yylval; + return -primary(op, val, yylex(), noeval); + case ARITH_NOT: + *val = yylval; + return !primary(op, val, yylex(), noeval); + case ARITH_BNOT: + *val = yylval; + return ~primary(op, val, yylex(), noeval); + default: + yyerror("expecting primary"); + } +} + +static intmax_t binop2(intmax_t a, int op, int prec, int noeval) +{ + for (;;) { + union yystype val; + intmax_t b; + int op2; + int token; + + token = yylex(); + val = yylval; + + b = primary(token, &val, yylex(), noeval); + + op2 = last_token; + if (op2 >= ARITH_BINOP_MIN && op2 < ARITH_BINOP_MAX && + higher_prec(op2, op)) { + b = binop2(b, op2, arith_prec(op), noeval); + op2 = last_token; + } + + a = noeval ? b : do_binop(op, a, b); + + if (op2 < ARITH_BINOP_MIN || op2 >= ARITH_BINOP_MAX || + arith_prec(op2) >= prec) + return a; + + op = op2; + } +} + +static intmax_t binop(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = primary(token, val, op, noeval); + + op = last_token; + if (op < ARITH_BINOP_MIN || op >= ARITH_BINOP_MAX) + return a; + + return binop2(a, op, ARITH_MAX_PREC, noeval); +} + +static intmax_t and(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = binop(token, val, op, noeval); + intmax_t b; + + op = last_token; + if (op != ARITH_AND) + return a; + + token = yylex(); + *val = yylval; + + b = and(token, val, yylex(), noeval | !a); + + return a && b; +} + +static intmax_t or(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = and(token, val, op, noeval); + intmax_t b; + + op = last_token; + if (op != ARITH_OR) + return a; + + token = yylex(); + *val = yylval; + + b = or(token, val, yylex(), noeval | !!a); + + return a || b; +} + +static intmax_t cond(int token, union yystype *val, int op, int noeval) +{ + intmax_t a = or(token, val, op, noeval); + intmax_t b; + intmax_t c; + + if (last_token != ARITH_QMARK) + return a; + + b = assignment(yylex(), noeval | !a); + + if (last_token != ARITH_COLON) + yyerror("expecting ':'"); + + token = yylex(); + *val = yylval; + + c = cond(token, val, yylex(), noeval | !!a); + + return a ? b : c; +} + +static intmax_t assignment(int var, int noeval) +{ + union yystype val = yylval; + int op = yylex(); + intmax_t result; + + if (var != ARITH_VAR) + return cond(var, &val, op, noeval); + + if (op != ARITH_ASS && (op < ARITH_ASS_MIN || op >= ARITH_ASS_MAX)) + return cond(var, &val, op, noeval); + + result = assignment(yylex(), noeval); + if (noeval) + return result; + + return setvarint(val.name, + op == ARITH_ASS ? result : + do_binop(op - 11, lookupvarint(val.name), result), 0); +} + +intmax_t arith(const char *s) +{ + intmax_t result; + + arith_buf = arith_startbuf = s; + + result = assignment(yylex(), 0); + + if (last_token) + yyerror("expecting EOF"); + + return result; +} diff --git a/shells/dash/files/src/arith_yacc.h b/shells/dash/files/src/arith_yacc.h new file mode 100644 index 0000000000000..ff34d524a2a58 --- /dev/null +++ b/shells/dash/files/src/arith_yacc.h @@ -0,0 +1,89 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 2007 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#define ARITH_ASS 1 + +#define ARITH_OR 2 +#define ARITH_AND 3 +#define ARITH_BAD 4 +#define ARITH_NUM 5 +#define ARITH_VAR 6 +#define ARITH_NOT 7 + +#define ARITH_BINOP_MIN 8 +#define ARITH_LE 8 +#define ARITH_GE 9 +#define ARITH_LT 10 +#define ARITH_GT 11 +#define ARITH_EQ 12 +#define ARITH_REM 13 +#define ARITH_BAND 14 +#define ARITH_LSHIFT 15 +#define ARITH_RSHIFT 16 +#define ARITH_MUL 17 +#define ARITH_ADD 18 +#define ARITH_BOR 19 +#define ARITH_SUB 20 +#define ARITH_BXOR 21 +#define ARITH_DIV 22 +#define ARITH_NE 23 +#define ARITH_BINOP_MAX 24 + +#define ARITH_ASS_MIN 24 +#define ARITH_REMASS 24 +#define ARITH_BANDASS 25 +#define ARITH_LSHIFTASS 26 +#define ARITH_RSHIFTASS 27 +#define ARITH_MULASS 28 +#define ARITH_ADDASS 29 +#define ARITH_BORASS 30 +#define ARITH_SUBASS 31 +#define ARITH_BXORASS 32 +#define ARITH_DIVASS 33 +#define ARITH_ASS_MAX 34 + +#define ARITH_LPAREN 34 +#define ARITH_RPAREN 35 +#define ARITH_BNOT 36 +#define ARITH_QMARK 37 +#define ARITH_COLON 38 + +union yystype { + intmax_t val; + char *name; +}; + +extern union yystype yylval; + +int yylex(void); diff --git a/shells/dash/files/src/arith_yylex.c b/shells/dash/files/src/arith_yylex.c new file mode 100644 index 0000000000000..ec5b5b25e5ce1 --- /dev/null +++ b/shells/dash/files/src/arith_yylex.c @@ -0,0 +1,240 @@ +/*- + * Copyright (c) 2002 + * Herbert Xu. + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include "arith_yacc.h" +#include "expand.h" +#include "error.h" +#include "shell.h" +#include "memalloc.h" +#include "syntax.h" +#include "system.h" + +#if ARITH_BOR + 11 != ARITH_BORASS || ARITH_ASS + 11 != ARITH_EQ +#error Arithmetic tokens are out of order. +#endif + +extern const char *arith_buf; + +int +yylex() +{ + int value; + const char *buf = arith_buf; + const char *p; + + for (;;) { + value = *buf; + switch (value) { + case ' ': + case '\t': + case '\n': + buf++; + continue; + default: + return ARITH_BAD; + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + yylval.val = strtoimax(buf, (char **)&arith_buf, 0); + return ARITH_NUM; + case 'A': + case 'B': + case 'C': + case 'D': + case 'E': + case 'F': + case 'G': + case 'H': + case 'I': + case 'J': + case 'K': + case 'L': + case 'M': + case 'N': + case 'O': + case 'P': + case 'Q': + case 'R': + case 'S': + case 'T': + case 'U': + case 'V': + case 'W': + case 'X': + case 'Y': + case 'Z': + case '_': + case 'a': + case 'b': + case 'c': + case 'd': + case 'e': + case 'f': + case 'g': + case 'h': + case 'i': + case 'j': + case 'k': + case 'l': + case 'm': + case 'n': + case 'o': + case 'p': + case 'q': + case 'r': + case 's': + case 't': + case 'u': + case 'v': + case 'w': + case 'x': + case 'y': + case 'z': + p = buf; + while (buf++, is_in_name(*buf)) + ; + yylval.name = stalloc(buf - p + 1); + *(char *)mempcpy(yylval.name, p, buf - p) = 0; + value = ARITH_VAR; + goto out; + case '=': + value += ARITH_ASS - '='; +checkeq: + buf++; +checkeqcur: + if (*buf != '=') + goto out; + value += 11; + break; + case '>': + switch (*++buf) { + case '=': + value += ARITH_GE - '>'; + break; + case '>': + value += ARITH_RSHIFT - '>'; + goto checkeq; + default: + value += ARITH_GT - '>'; + goto out; + } + break; + case '<': + switch (*++buf) { + case '=': + value += ARITH_LE - '<'; + break; + case '<': + value += ARITH_LSHIFT - '<'; + goto checkeq; + default: + value += ARITH_LT - '<'; + goto out; + } + break; + case '|': + if (*++buf != '|') { + value += ARITH_BOR - '|'; + goto checkeqcur; + } + value += ARITH_OR - '|'; + break; + case '&': + if (*++buf != '&') { + value += ARITH_BAND - '&'; + goto checkeqcur; + } + value += ARITH_AND - '&'; + break; + case '!': + if (*++buf != '=') { + value += ARITH_NOT - '!'; + goto out; + } + value += ARITH_NE - '!'; + break; + case 0: + goto out; + case '(': + value += ARITH_LPAREN - '('; + break; + case ')': + value += ARITH_RPAREN - ')'; + break; + case '*': + value += ARITH_MUL - '*'; + goto checkeq; + case '/': + value += ARITH_DIV - '/'; + goto checkeq; + case '%': + value += ARITH_REM - '%'; + goto checkeq; + case '+': + value += ARITH_ADD - '+'; + goto checkeq; + case '-': + value += ARITH_SUB - '-'; + goto checkeq; + case '~': + value += ARITH_BNOT - '~'; + break; + case '^': + value += ARITH_BXOR - '^'; + goto checkeq; + case '?': + value += ARITH_QMARK - '?'; + break; + case ':': + value += ARITH_COLON - ':'; + break; + } + break; + } + + buf++; +out: + arith_buf = buf; + return value; +} diff --git a/shells/dash/files/src/bltin/bltin.h b/shells/dash/files/src/bltin/bltin.h new file mode 100644 index 0000000000000..f5ac06f2f6fad --- /dev/null +++ b/shells/dash/files/src/bltin/bltin.h @@ -0,0 +1,89 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)bltin.h 8.1 (Berkeley) 5/31/93 + */ + +/* + * This file is included by programs which are optionally built into the + * shell. If SHELL is defined, we try to map the standard UNIX library + * routines to ash routines using defines. + */ + +#include "../shell.h" +#include "../mystring.h" +#include "../options.h" +#ifdef SHELL +#include "../memalloc.h" +#include "../output.h" +#include "../error.h" +#ifndef USE_GLIBC_STDIO +#undef stdout +#undef stderr +#undef putc +#undef putchar +#undef fileno +#define stdout out1 +#define stderr out2 +#define printf out1fmt +#define putc(c, file) outc(c, file) +#define putchar(c) out1c(c) +#define FILE struct output +#define fprintf outfmt +#define fputs outstr +#define fflush flushout +#define fileno(f) ((f)->fd) +#define ferror outerr +#endif +#define INITARGS(argv) +#define error sh_error +#define warn sh_warn +#define warnx sh_warnx +#define exit sh_exit +#define setprogname(s) +#define getprogname() commandname +#define setlocate(l,s) 0 + +#define getenv(p) bltinlookup((p),0) + +#else +#undef NULL +#include +#undef main +#define INITARGS(argv) if ((commandname = argv[0]) == NULL) {fputs("Argc is zero\n", stderr); exit(2);} else +#endif + +int echocmd(int, char **); + + +extern const char *commandname; diff --git a/shells/dash/files/src/bltin/printf.c b/shells/dash/files/src/bltin/printf.c new file mode 100644 index 0000000000000..e9178fd6f6b64 --- /dev/null +++ b/shells/dash/files/src/bltin/printf.c @@ -0,0 +1,463 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +static int conv_escape_str(char *); +static char *conv_escape(char *, int *); +static int getchr(void); +static double getdouble(void); +static intmax_t getintmax(void); +static uintmax_t getuintmax(void); +static char *getstr(void); +static char *mklong(const char *, const char *); +static void check_conversion(const char *, const char *); + +static int rval; +static char **gargv; + +#define isodigit(c) ((c) >= '0' && (c) <= '7') +#define octtobin(c) ((c) - '0') + +#include "bltin.h" +#include "system.h" + +#define PF(f, func) { \ + switch ((char *)param - (char *)array) { \ + default: \ + (void)printf(f, array[0], array[1], func); \ + break; \ + case sizeof(*param): \ + (void)printf(f, array[0], func); \ + break; \ + case 0: \ + (void)printf(f, func); \ + break; \ + } \ +} + +int printfcmd(int argc, char *argv[]) +{ + char *fmt; + char *format; + int ch; + + rval = 0; + + nextopt(nullstr); + + argv = argptr; + format = *argv; + + if (!format) { + warnx("usage: printf format [arg ...]"); + goto err; + } + + gargv = ++argv; + +#define SKIP1 "#-+ 0" +#define SKIP2 "*0123456789" + do { + /* + * Basic algorithm is to scan the format string for conversion + * specifications -- once one is found, find out if the field + * width or precision is a '*'; if it is, gather up value. + * Note, format strings are reused as necessary to use up the + * provided arguments, arguments of zero/null string are + * provided to use up the format string. + */ + + /* find next format specification */ + for (fmt = format; (ch = *fmt++) ;) { + char *start; + char nextch; + int array[2]; + int *param; + + if (ch == '\\') { + int c_ch; + fmt = conv_escape(fmt, &c_ch); + ch = c_ch; + goto pc; + } + if (ch != '%' || (*fmt == '%' && (++fmt || 1))) { +pc: + putchar(ch); + continue; + } + + /* Ok - we've found a format specification, + Save its address for a later printf(). */ + start = fmt - 1; + param = array; + + /* skip to field width */ + fmt += strspn(fmt, SKIP1); + if (*fmt == '*') + *param++ = getintmax(); + + /* skip to possible '.', get following precision */ + fmt += strspn(fmt, SKIP2); + if (*fmt == '.') + ++fmt; + if (*fmt == '*') + *param++ = getintmax(); + + fmt += strspn(fmt, SKIP2); + + ch = *fmt; + if (!ch) { + warnx("missing format character"); + goto err; + } + /* null terminate format string to we can use it + as an argument to printf. */ + nextch = fmt[1]; + fmt[1] = 0; + switch (ch) { + + case 'b': { + int done = conv_escape_str(getstr()); + char *p = stackblock(); + *fmt = 's'; + PF(start, p); + /* escape if a \c was encountered */ + if (done) + goto out; + *fmt = 'b'; + break; + } + case 'c': { + int p = getchr(); + PF(start, p); + break; + } + case 's': { + char *p = getstr(); + PF(start, p); + break; + } + case 'd': + case 'i': { + intmax_t p = getintmax(); + char *f = mklong(start, fmt); + PF(f, p); + break; + } + case 'o': + case 'u': + case 'x': + case 'X': { + uintmax_t p = getuintmax(); + char *f = mklong(start, fmt); + PF(f, p); + break; + } + case 'e': + case 'E': + case 'f': + case 'g': + case 'G': { + double p = getdouble(); + PF(start, p); + break; + } + default: + warnx("%s: invalid directive", start); + goto err; + } + *++fmt = nextch; + } + } while (gargv != argv && *gargv); + +out: + return rval; +err: + return 1; +} + + +/* + * Print SysV echo(1) style escape string + * Halts processing string if a \c escape is encountered. + */ +static int +conv_escape_str(char *str) +{ + int ch; + char *cp; + + /* convert string into a temporary buffer... */ + STARTSTACKSTR(cp); + + do { + int c; + + ch = *str++; + if (ch != '\\') + continue; + + ch = *str++; + if (ch == 'c') { + /* \c as in SYSV echo - abort all processing.... */ + ch = 0x100; + continue; + } + + /* + * %b string octal constants are not like those in C. + * They start with a \0, and are followed by 0, 1, 2, + * or 3 octal digits. + */ + if (ch >= '1' && ch <= '9') { + ch = '\\'; + --str; + continue; + } + + /* Finally test for sequences valid in the format string */ + str = conv_escape(str - 1, &c); + ch = c; + } while (STPUTC(ch, cp), (char)ch); + + return ch; +} + +/* + * Print "standard" escape characters + */ +static char * +conv_escape(char *str, int *conv_ch) +{ + int value; + int ch; + + ch = *str; + + switch (ch) { + default: + case 0: + value = '\\'; + goto out; + + case '0': case '1': case '2': case '3': + case '4': case '5': case '6': case '7': + ch = 3; + value = 0; + do { + value <<= 3; + value += octtobin(*str++); + } while (isodigit(*str) && --ch); + goto out; + + case '\\': value = '\\'; break; /* backslash */ + case 'a': value = '\a'; break; /* alert */ + case 'b': value = '\b'; break; /* backspace */ + case 'f': value = '\f'; break; /* form-feed */ + case 'n': value = '\n'; break; /* newline */ + case 'r': value = '\r'; break; /* carriage-return */ + case 't': value = '\t'; break; /* tab */ + case 'v': value = '\v'; break; /* vertical-tab */ + } + + str++; +out: + *conv_ch = value; + return str; +} + +static char * +mklong(const char *str, const char *ch) +{ + /* + * Replace a string like "%92.3u" with "%92.3"PRIuMAX. + * + * Although C99 does not guarantee it, we assume PRIiMAX, + * PRIoMAX, PRIuMAX, PRIxMAX, and PRIXMAX are all the same + * as PRIdMAX with the final 'd' replaced by the corresponding + * character. + */ + + char *copy; + size_t len; + + len = ch - str + sizeof(PRIdMAX); + STARTSTACKSTR(copy); + copy = makestrspace(len, copy); + memcpy(copy, str, len - sizeof(PRIdMAX)); + memcpy(copy + len - sizeof(PRIdMAX), PRIdMAX, sizeof(PRIdMAX)); + copy[len - 2] = *ch; + return (copy); +} + +static int +getchr(void) +{ + int val = 0; + + if (*gargv) + val = **gargv++; + return val; +} + +static char * +getstr(void) +{ + char *val = nullstr; + + if (*gargv) + val = *gargv++; + return val; +} + +static intmax_t +getintmax(void) +{ + intmax_t val = 0; + char *cp, *ep; + + cp = *gargv; + if (cp == NULL) + goto out; + gargv++; + + val = (unsigned char) cp[1]; + if (*cp == '\"' || *cp == '\'') + goto out; + + errno = 0; + val = strtoimax(cp, &ep, 0); + check_conversion(cp, ep); +out: + return val; +} + +static uintmax_t +getuintmax(void) +{ + uintmax_t val = 0; + char *cp, *ep; + + cp = *gargv; + if (cp == NULL) + goto out; + gargv++; + + val = (unsigned char) cp[1]; + if (*cp == '\"' || *cp == '\'') + goto out; + + errno = 0; + val = strtoumax(cp, &ep, 0); + check_conversion(cp, ep); +out: + return val; +} + +static double +getdouble(void) +{ + double val; + char *cp, *ep; + + cp = *gargv; + if (cp == NULL) + return 0; + gargv++; + + if (*cp == '\"' || *cp == '\'') + return (unsigned char) cp[1]; + + errno = 0; + val = strtod(cp, &ep); + check_conversion(cp, ep); + return val; +} + +static void +check_conversion(const char *s, const char *ep) +{ + if (*ep) { + if (ep == s) + warnx("%s: expected numeric value", s); + else + warnx("%s: not completely converted", s); + rval = 1; + } else if (errno == ERANGE) { + warnx("%s: %s", s, strerror(ERANGE)); + rval = 1; + } +} + +int +echocmd(int argc, char **argv) +{ + int nonl = 0; + struct output *outs = out1; + + if (!*++argv) + goto end; + if (equal(*argv, "-n")) { + nonl = ~nonl; + if (!*++argv) + goto end; + } + + do { + int c; + + nonl += conv_escape_str(*argv); + outstr(stackblock(), outs); + if (nonl > 0) + break; + + c = ' '; + if (!*++argv) { +end: + if (nonl) { + break; + } + c = '\n'; + } + outc(c, outs); + } while (*argv); + return 0; +} diff --git a/shells/dash/files/src/bltin/test.c b/shells/dash/files/src/bltin/test.c new file mode 100644 index 0000000000000..baa91a57430c2 --- /dev/null +++ b/shells/dash/files/src/bltin/test.c @@ -0,0 +1,547 @@ +/* + * test(1); version 7-like -- author Erik Baalbergen + * modified by Eric Gisin to be used as built-in. + * modified by Arnold Robbins to add SVR3 compatibility + * (-x -c -b -p -u -g -k) plus Korn's -L -nt -ot -ef and new -S (socket). + * modified by J.T. Conklin for NetBSD. + * + * This program is in the Public Domain. + */ + +#include +#include + +#include +#include +#include +#include +#include +#include +#include "bltin.h" + +/* test(1) accepts the following grammar: + oexpr ::= aexpr | aexpr "-o" oexpr ; + aexpr ::= nexpr | nexpr "-a" aexpr ; + nexpr ::= primary | "!" primary + primary ::= unary-operator operand + | operand binary-operator operand + | operand + | "(" oexpr ")" + ; + unary-operator ::= "-r"|"-w"|"-x"|"-f"|"-d"|"-c"|"-b"|"-p"| + "-u"|"-g"|"-k"|"-s"|"-t"|"-z"|"-n"|"-o"|"-O"|"-G"|"-L"|"-S"; + + binary-operator ::= "="|"!="|"-eq"|"-ne"|"-ge"|"-gt"|"-le"|"-lt"| + "-nt"|"-ot"|"-ef"; + operand ::= +*/ + +enum token { + EOI, + FILRD, + FILWR, + FILEX, + FILEXIST, + FILREG, + FILDIR, + FILCDEV, + FILBDEV, + FILFIFO, + FILSOCK, + FILSYM, + FILGZ, + FILTT, + FILSUID, + FILSGID, + FILSTCK, + FILNT, + FILOT, + FILEQ, + FILUID, + FILGID, + STREZ, + STRNZ, + STREQ, + STRNE, + STRLT, + STRGT, + INTEQ, + INTNE, + INTGE, + INTGT, + INTLE, + INTLT, + UNOT, + BAND, + BOR, + LPAREN, + RPAREN, + OPERAND +}; + +enum token_types { + UNOP, + BINOP, + BUNOP, + BBINOP, + PAREN +}; + +static struct t_op { + const char *op_text; + short op_num, op_type; +} const ops [] = { + {"-r", FILRD, UNOP}, + {"-w", FILWR, UNOP}, + {"-x", FILEX, UNOP}, + {"-e", FILEXIST,UNOP}, + {"-f", FILREG, UNOP}, + {"-d", FILDIR, UNOP}, + {"-c", FILCDEV,UNOP}, + {"-b", FILBDEV,UNOP}, + {"-p", FILFIFO,UNOP}, + {"-u", FILSUID,UNOP}, + {"-g", FILSGID,UNOP}, + {"-k", FILSTCK,UNOP}, + {"-s", FILGZ, UNOP}, + {"-t", FILTT, UNOP}, + {"-z", STREZ, UNOP}, + {"-n", STRNZ, UNOP}, + {"-h", FILSYM, UNOP}, /* for backwards compat */ + {"-O", FILUID, UNOP}, + {"-G", FILGID, UNOP}, + {"-L", FILSYM, UNOP}, + {"-S", FILSOCK,UNOP}, + {"=", STREQ, BINOP}, + {"!=", STRNE, BINOP}, + {"<", STRLT, BINOP}, + {">", STRGT, BINOP}, + {"-eq", INTEQ, BINOP}, + {"-ne", INTNE, BINOP}, + {"-ge", INTGE, BINOP}, + {"-gt", INTGT, BINOP}, + {"-le", INTLE, BINOP}, + {"-lt", INTLT, BINOP}, + {"-nt", FILNT, BINOP}, + {"-ot", FILOT, BINOP}, + {"-ef", FILEQ, BINOP}, + {"!", UNOT, BUNOP}, + {"-a", BAND, BBINOP}, + {"-o", BOR, BBINOP}, + {"(", LPAREN, PAREN}, + {")", RPAREN, PAREN}, + {0, 0, 0} +}; + +static char **t_wp; +static struct t_op const *t_wp_op; + +static void syntax(const char *, const char *); +static int oexpr(enum token); +static int aexpr(enum token); +static int nexpr(enum token); +static int primary(enum token); +static int binop(void); +static int filstat(char *, enum token); +static enum token t_lex(char **); +static int isoperand(char **); +static int newerf(const char *, const char *); +static int olderf(const char *, const char *); +static int equalf(const char *, const char *); +#ifdef HAVE_FACCESSAT +static int test_file_access(const char *, int); +#else +static int test_st_mode(const struct stat64 *, int); +static int bash_group_member(gid_t); +#endif + +static inline intmax_t getn(const char *s) +{ + return atomax10(s); +} + +static const struct t_op *getop(const char *s) +{ + const struct t_op *op; + + for (op = ops; op->op_text; op++) { + if (strcmp(s, op->op_text) == 0) + return op; + } + + return NULL; +} + +int +testcmd(int argc, char **argv) +{ + const struct t_op *op; + enum token n; + int res; + + if (*argv[0] == '[') { + if (*argv[--argc] != ']') + error("missing ]"); + argv[argc] = NULL; + } + + argv++; + argc--; + + if (argc < 1) + return 1; + + /* + * POSIX prescriptions: he who wrote this deserves the Nobel + * peace prize. + */ + switch (argc) { + case 3: + op = getop(argv[1]); + if (op && op->op_type == BINOP) { + n = OPERAND; + goto eval; + } + /* fall through */ + + case 4: + if (!strcmp(argv[0], "(") && !strcmp(argv[argc - 1], ")")) { + argv[--argc] = NULL; + argv++; + argc--; + } + } + + n = t_lex(argv); + +eval: + t_wp = argv; + res = !oexpr(n); + argv = t_wp; + + if (argv[0] != NULL && argv[1] != NULL) + syntax(argv[0], "unexpected operator"); + + return res; +} + +static void +syntax(const char *op, const char *msg) +{ + if (op && *op) + error("%s: %s", op, msg); + else + error("%s", msg); +} + +static int +oexpr(enum token n) +{ + int res = 0; + + for (;;) { + res |= aexpr(n); + n = t_lex(t_wp + 1); + if (n != BOR) + break; + n = t_lex(t_wp += 2); + } + return res; +} + +static int +aexpr(enum token n) +{ + int res = 1; + + for (;;) { + if (!nexpr(n)) + res = 0; + n = t_lex(t_wp + 1); + if (n != BAND) + break; + n = t_lex(t_wp += 2); + } + return res; +} + +static int +nexpr(enum token n) +{ + if (n != UNOT) + return primary(n); + + n = t_lex(t_wp + 1); + if (n != EOI) + t_wp++; + return !nexpr(n); +} + +static int +primary(enum token n) +{ + enum token nn; + int res; + + if (n == EOI) + return 0; /* missing expression */ + if (n == LPAREN) { + if ((nn = t_lex(++t_wp)) == RPAREN) + return 0; /* missing expression */ + res = oexpr(nn); + if (t_lex(++t_wp) != RPAREN) + syntax(NULL, "closing paren expected"); + return res; + } + if (t_wp_op && t_wp_op->op_type == UNOP) { + /* unary expression */ + if (*++t_wp == NULL) + syntax(t_wp_op->op_text, "argument expected"); + switch (n) { + case STREZ: + return strlen(*t_wp) == 0; + case STRNZ: + return strlen(*t_wp) != 0; + case FILTT: + return isatty(getn(*t_wp)); +#ifdef HAVE_FACCESSAT + case FILRD: + return test_file_access(*t_wp, R_OK); + case FILWR: + return test_file_access(*t_wp, W_OK); + case FILEX: + return test_file_access(*t_wp, X_OK); +#endif + default: + return filstat(*t_wp, n); + } + } + + if (t_lex(t_wp + 1), t_wp_op && t_wp_op->op_type == BINOP) { + return binop(); + } + + return strlen(*t_wp) > 0; +} + +static int +binop(void) +{ + const char *opnd1, *opnd2; + struct t_op const *op; + + opnd1 = *t_wp; + (void) t_lex(++t_wp); + op = t_wp_op; + + if ((opnd2 = *++t_wp) == (char *)0) + syntax(op->op_text, "argument expected"); + + switch (op->op_num) { + default: +#ifdef DEBUG + abort(); + /* NOTREACHED */ +#endif + case STREQ: + return strcmp(opnd1, opnd2) == 0; + case STRNE: + return strcmp(opnd1, opnd2) != 0; + case STRLT: + return strcmp(opnd1, opnd2) < 0; + case STRGT: + return strcmp(opnd1, opnd2) > 0; + case INTEQ: + return getn(opnd1) == getn(opnd2); + case INTNE: + return getn(opnd1) != getn(opnd2); + case INTGE: + return getn(opnd1) >= getn(opnd2); + case INTGT: + return getn(opnd1) > getn(opnd2); + case INTLE: + return getn(opnd1) <= getn(opnd2); + case INTLT: + return getn(opnd1) < getn(opnd2); + case FILNT: + return newerf (opnd1, opnd2); + case FILOT: + return olderf (opnd1, opnd2); + case FILEQ: + return equalf (opnd1, opnd2); + } +} + +static int +filstat(char *nm, enum token mode) +{ + struct stat64 s; + + if (mode == FILSYM ? lstat64(nm, &s) : stat64(nm, &s)) + return 0; + + switch (mode) { +#ifndef HAVE_FACCESSAT + case FILRD: + return test_st_mode(&s, R_OK); + case FILWR: + return test_st_mode(&s, W_OK); + case FILEX: + return test_st_mode(&s, X_OK); +#endif + case FILEXIST: + return 1; + case FILREG: + return S_ISREG(s.st_mode); + case FILDIR: + return S_ISDIR(s.st_mode); + case FILCDEV: + return S_ISCHR(s.st_mode); + case FILBDEV: + return S_ISBLK(s.st_mode); + case FILFIFO: + return S_ISFIFO(s.st_mode); + case FILSOCK: + return S_ISSOCK(s.st_mode); + case FILSYM: + return S_ISLNK(s.st_mode); + case FILSUID: + return (s.st_mode & S_ISUID) != 0; + case FILSGID: + return (s.st_mode & S_ISGID) != 0; + case FILSTCK: + return (s.st_mode & S_ISVTX) != 0; + case FILGZ: + return !!s.st_size; + case FILUID: + return s.st_uid == geteuid(); + case FILGID: + return s.st_gid == getegid(); + default: + return 1; + } +} + +static enum token t_lex(char **tp) +{ + struct t_op const *op; + char *s = *tp; + + if (s == 0) { + t_wp_op = (struct t_op *)0; + return EOI; + } + + op = getop(s); + if (op && !(op->op_type == UNOP && isoperand(tp)) && + !(op->op_num == LPAREN && !tp[1])) { + t_wp_op = op; + return op->op_num; + } + + t_wp_op = (struct t_op *)0; + return OPERAND; +} + +static int isoperand(char **tp) +{ + struct t_op const *op; + char *s; + + if (!(s = tp[1])) + return 1; + if (!tp[2]) + return 0; + + op = getop(s); + return op && op->op_type == BINOP; +} + +static int +newerf (const char *f1, const char *f2) +{ + struct stat b1, b2; + + return (stat (f1, &b1) == 0 && + stat (f2, &b2) == 0 && + b1.st_mtime > b2.st_mtime); +} + +static int +olderf (const char *f1, const char *f2) +{ + struct stat b1, b2; + + return (stat (f1, &b1) == 0 && + stat (f2, &b2) == 0 && + b1.st_mtime < b2.st_mtime); +} + +static int +equalf (const char *f1, const char *f2) +{ + struct stat b1, b2; + + return (stat (f1, &b1) == 0 && + stat (f2, &b2) == 0 && + b1.st_dev == b2.st_dev && + b1.st_ino == b2.st_ino); +} + +#ifdef HAVE_FACCESSAT +static int test_file_access(const char *path, int mode) +{ + return !faccessat(AT_FDCWD, path, mode, AT_EACCESS); +} +#else /* HAVE_FACCESSAT */ +/* + * Similar to what access(2) does, but uses the effective uid and gid. + * Doesn't make the mistake of telling root that any file is executable. + * Returns non-zero if the file is accessible. + */ +static int +test_st_mode(const struct stat64 *st, int mode) +{ + int euid = geteuid(); + + if (euid == 0) { + /* Root can read or write any file. */ + if (mode != X_OK) + return 1; + + /* Root can execute any file that has any one of the execute + bits set. */ + mode = S_IXUSR | S_IXGRP | S_IXOTH; + } else if (st->st_uid == euid) + mode <<= 6; + else if (bash_group_member(st->st_gid)) + mode <<= 3; + + return st->st_mode & mode; +} + +/* Return non-zero if GID is one that we have in our groups list. */ +static int +bash_group_member(gid_t gid) +{ + register int i; + gid_t *group_array; + int ngroups; + + /* Short-circuit if possible, maybe saving a call to getgroups(). */ + if (gid == getgid() || gid == getegid()) + return (1); + + ngroups = getgroups(0, NULL); + group_array = stalloc(ngroups * sizeof(gid_t)); + if ((getgroups(ngroups, group_array)) != ngroups) + return (0); + + /* Search through the list looking for GID. */ + for (i = 0; i < ngroups; i++) + if (gid == group_array[i]) + return (1); + + return (0); +} +#endif /* HAVE_FACCESSAT */ diff --git a/shells/dash/files/src/bltin/times.c b/shells/dash/files/src/bltin/times.c new file mode 100644 index 0000000000000..8eabc1fede84e --- /dev/null +++ b/shells/dash/files/src/bltin/times.c @@ -0,0 +1,30 @@ +/* + * Copyright (c) 1999 Herbert Xu + * This file contains code for the times builtin. + */ + +#include +#include +#ifdef USE_GLIBC_STDIO +#include +#else +#include "bltin.h" +#endif +#include "system.h" + +int timescmd() { + struct tms buf; + long int clk_tck = sysconf(_SC_CLK_TCK); + + times(&buf); + printf("%dm%fs %dm%fs\n%dm%fs %dm%fs\n", + (int) (buf.tms_utime / clk_tck / 60), + ((double) buf.tms_utime) / clk_tck, + (int) (buf.tms_stime / clk_tck / 60), + ((double) buf.tms_stime) / clk_tck, + (int) (buf.tms_cutime / clk_tck / 60), + ((double) buf.tms_cutime) / clk_tck, + (int) (buf.tms_cstime / clk_tck / 60), + ((double) buf.tms_cstime) / clk_tck); + return 0; +} diff --git a/shells/dash/files/src/builtins.def.in b/shells/dash/files/src/builtins.def.in new file mode 100644 index 0000000000000..4441fe41545e2 --- /dev/null +++ b/shells/dash/files/src/builtins.def.in @@ -0,0 +1,94 @@ +/* + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)builtins.def 8.4 (Berkeley) 5/4/95 + */ + +/* + * This file lists all the builtin commands. The first column is the name + * of a C routine. + * The -a flag specifies that this is a posix 'assignment builtin' command. + * The -s flag specifies that this is a posix 'special builtin' command. + * The -u flag specifies that this is a posix 'standard utility'. + * The -n flag specifies that this command has a special entry point. + * The rest of the line specifies the command name or names used to run + * the command. + */ + +#ifndef JOBS +#define JOBS 1 +#endif + +#if JOBS +bgcmd -u bg +fgcmd -u fg +#endif + +#ifndef SMALL +histcmd -u fc +#endif + +breakcmd -s break -s continue +cdcmd -u cd chdir +commandcmd -u command +dotcmd -s . +echocmd echo +evalcmd -ns eval +execcmd -s exec +exitcmd -s exit +exportcmd -as export -as readonly +falsecmd -u false +getoptscmd -u getopts +hashcmd hash +jobscmd -u jobs +localcmd -as local +printfcmd printf +pwdcmd pwd +readcmd -u read +returncmd -s return +setcmd -s set +shiftcmd -s shift +timescmd -s times +trapcmd -s trap +truecmd -s : -u true +typecmd type +umaskcmd -u umask +unaliascmd -u unalias +unsetcmd -s unset +waitcmd -u wait +aliascmd -au alias +#ifdef HAVE_GETRLIMIT +ulimitcmd ulimit +#endif +testcmd test [ +killcmd -u kill diff --git a/shells/dash/files/src/cd.c b/shells/dash/files/src/cd.c new file mode 100644 index 0000000000000..2d9d4b521c9d1 --- /dev/null +++ b/shells/dash/files/src/cd.c @@ -0,0 +1,316 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include + +/* + * The cd and pwd commands. + */ + +#include "shell.h" +#include "var.h" +#include "nodes.h" /* for jobs.h */ +#include "jobs.h" +#include "options.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "exec.h" +#include "redir.h" +#include "main.h" +#include "mystring.h" +#include "show.h" +#include "cd.h" + +#define CD_PHYSICAL 1 +#define CD_PRINT 2 + +STATIC int docd(const char *, int); +STATIC const char *updatepwd(const char *); +STATIC char *getpwd(void); +STATIC int cdopt(void); + +STATIC char *curdir = nullstr; /* current working directory */ +STATIC char *physdir = nullstr; /* physical working directory */ + +STATIC int +cdopt() +{ + int flags = 0; + int i, j; + + j = 'L'; + while ((i = nextopt("LP"))) { + if (i != j) { + flags ^= CD_PHYSICAL; + j = i; + } + } + + return flags; +} + +int +cdcmd(int argc, char **argv) +{ + const char *dest; + const char *path; + const char *p; + char c; + struct stat statb; + int flags; + + flags = cdopt(); + dest = *argptr; + if (!dest) + dest = bltinlookup(homestr); + else if (dest[0] == '-' && dest[1] == '\0') { + dest = bltinlookup("OLDPWD"); + flags |= CD_PRINT; + } + if (!dest) + dest = nullstr; + if (*dest == '/') + goto step6; + if (*dest == '.') { + c = dest[1]; +dotdot: + switch (c) { + case '\0': + case '/': + goto step6; + case '.': + c = dest[2]; + if (c != '.') + goto dotdot; + } + } + if (!*dest) + dest = "."; + path = bltinlookup("CDPATH"); + while (path) { + c = *path; + p = padvance(&path, dest); + if (stat(p, &statb) >= 0 && S_ISDIR(statb.st_mode)) { + if (c && c != ':') + flags |= CD_PRINT; +docd: + if (!docd(p, flags)) + goto out; + goto err; + } + } + +step6: + p = dest; + goto docd; + +err: + sh_error("can't cd to %s", dest); + /* NOTREACHED */ +out: + if (flags & CD_PRINT) + out1fmt(snlfmt, curdir); + return 0; +} + + +/* + * Actually do the chdir. We also call hashcd to let the routines in exec.c + * know that the current directory has changed. + */ + +STATIC int +docd(const char *dest, int flags) +{ + const char *dir = 0; + int err; + + TRACE(("docd(\"%s\", %d) called\n", dest, flags)); + + INTOFF; + if (!(flags & CD_PHYSICAL)) { + dir = updatepwd(dest); + if (dir) + dest = dir; + } + err = chdir(dest); + if (err) + goto out; + setpwd(dir, 1); + hashcd(); +out: + INTON; + return err; +} + + +/* + * Update curdir (the name of the current directory) in response to a + * cd command. + */ + +STATIC const char * +updatepwd(const char *dir) +{ + char *new; + char *p; + char *cdcomppath; + const char *lim; + + cdcomppath = sstrdup(dir); + STARTSTACKSTR(new); + if (*dir != '/') { + if (curdir == nullstr) + return 0; + new = stputs(curdir, new); + } + new = makestrspace(strlen(dir) + 2, new); + lim = stackblock() + 1; + if (*dir != '/') { + if (new[-1] != '/') + USTPUTC('/', new); + if (new > lim && *lim == '/') + lim++; + } else { + USTPUTC('/', new); + cdcomppath++; + if (dir[1] == '/' && dir[2] != '/') { + USTPUTC('/', new); + cdcomppath++; + lim++; + } + } + p = strtok(cdcomppath, "/"); + while (p) { + switch(*p) { + case '.': + if (p[1] == '.' && p[2] == '\0') { + while (new > lim) { + STUNPUTC(new); + if (new[-1] == '/') + break; + } + break; + } else if (p[1] == '\0') + break; + /* fall through */ + default: + new = stputs(p, new); + USTPUTC('/', new); + } + p = strtok(0, "/"); + } + if (new > lim) + STUNPUTC(new); + *new = 0; + return stackblock(); +} + + +/* + * Find out what the current directory is. If we already know the current + * directory, this routine returns immediately. + */ +inline +STATIC char * +getpwd() +{ +#ifdef __GLIBC__ + char *dir = getcwd(0, 0); + + if (dir) + return dir; +#else + char buf[PATH_MAX]; + + if (getcwd(buf, sizeof(buf))) + return savestr(buf); +#endif + + sh_warnx("getcwd() failed: %s", strerror(errno)); + return nullstr; +} + +int +pwdcmd(int argc, char **argv) +{ + int flags; + const char *dir = curdir; + + flags = cdopt(); + if (flags) { + if (physdir == nullstr) + setpwd(dir, 0); + dir = physdir; + } + out1fmt(snlfmt, dir); + return 0; +} + +void +setpwd(const char *val, int setold) +{ + char *oldcur, *dir; + + oldcur = dir = curdir; + + if (setold) { + setvar("OLDPWD", oldcur, VEXPORT); + } + INTOFF; + if (physdir != nullstr) { + if (physdir != oldcur) + free(physdir); + physdir = nullstr; + } + if (oldcur == val || !val) { + char *s = getpwd(); + physdir = s; + if (!val) + dir = s; + } else + dir = savestr(val); + if (oldcur != dir && oldcur != nullstr) { + free(oldcur); + } + curdir = dir; + INTON; + setvar("PWD", dir, VEXPORT); +} diff --git a/shells/dash/files/src/cd.h b/shells/dash/files/src/cd.h new file mode 100644 index 0000000000000..87631619a9234 --- /dev/null +++ b/shells/dash/files/src/cd.h @@ -0,0 +1,35 @@ +/*- + * Copyright (c) 1995 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +int cdcmd(int, char **); +int pwdcmd(int, char **); +void setpwd(const char *, int); diff --git a/shells/dash/files/src/dash.1 b/shells/dash/files/src/dash.1 new file mode 100644 index 0000000000000..489cea24068f0 --- /dev/null +++ b/shells/dash/files/src/dash.1 @@ -0,0 +1,2358 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" Copyright (c) 1997-2005 +.\" Herbert Xu . All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" Kenneth Almquist. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)sh.1 8.6 (Berkeley) 5/4/95 +.\" +.Dd January 19, 2003 +.Os +.Dt DASH 1 +.Sh NAME +.Nm dash +.Nd command interpreter (shell) +.Sh SYNOPSIS +.Nm +.Bk -words +.Op Fl aCefnuvxIimqVEb +.Op Cm +aCefnuvxIimqVEb +.Ek +.Bk -words +.Op Fl o Ar option_name +.Op Cm +o Ar option_name +.Ek +.Bk -words +.Op Ar command_file Oo Ar argument ... Oc +.Ek +.Nm +.Fl c +.Bk -words +.Op Fl aCefnuvxIimqVEb +.Op Cm +aCefnuvxIimqVEb +.Ek +.Bk -words +.Op Fl o Ar option_name +.Op Cm +o Ar option_name +.Ek +.Bk -words +.Ar command_string +.Op Ar command_name Oo Ar argument ... Oc +.Ek +.Nm +.Fl s +.Bk -words +.Op Fl aCefnuvxIimqVEb +.Op Cm +aCefnuvxIimqVEb +.Ek +.Bk -words +.Op Fl o Ar option_name +.Op Cm +o Ar option_name +.Ek +.Bk -words +.Op Ar argument ... +.Ek +.Sh DESCRIPTION +.Nm +is the standard command interpreter for the system. +The current version of +.Nm +is in the process of being changed to conform with the +.Tn POSIX +1003.2 and 1003.2a specifications for the shell. +This version has many +features which make it appear similar in some respects to the Korn shell, +but it is not a Korn shell clone (see +.Xr ksh 1 ) . +Only features designated by +.Tn POSIX , +plus a few Berkeley extensions, are being incorporated into this shell. +This man page is not intended +to be a tutorial or a complete specification of the shell. +.Ss Overview +The shell is a command that reads lines from either a file or the +terminal, interprets them, and generally executes other commands. +It is the program that is running when a user logs into the system +(although a user can select a different shell with the +.Xr chsh 1 +command). +The shell implements a language that has flow control +constructs, a macro facility that provides a variety of features in +addition to data storage, along with built in history and line editing +capabilities. +It incorporates many features to aid interactive use and +has the advantage that the interpretative language is common to both +interactive and non-interactive use (shell scripts). +That is, commands +can be typed directly to the running shell or can be put into a file and +the file can be executed directly by the shell. +.Ss Invocation +If no args are present and if the standard input of the shell +is connected to a terminal (or if the +.Fl i +flag is set), +and the +.Fl c +option is not present, the shell is considered an interactive shell. +An interactive shell generally prompts before each command and handles +programming and command errors differently (as described below). +When first starting, +the shell inspects argument 0, and if it begins with a dash +.Sq - , +the shell is also considered +a login shell. +This is normally done automatically by the system +when the user first logs in. +A login shell first reads commands +from the files +.Pa /etc/profile +and +.Pa .profile +if they exist. +If the environment variable +.Ev ENV +is set on entry to an interactive shell, or is set in the +.Pa .profile +of a login shell, the shell next reads +commands from the file named in +.Ev ENV . +Therefore, a user should place commands that are to be executed only at +login time in the +.Pa .profile +file, and commands that are executed for every interactive shell inside the +.Ev ENV +file. +To set the +.Ev ENV +variable to some file, place the following line in your +.Pa .profile +of your home directory +.Pp +.Dl ENV=$HOME/.shinit; export ENV +.Pp +substituting for +.Dq .shinit +any filename you wish. +.Pp +If command line arguments besides the options have been specified, then +the shell treats the first argument as the name of a file from which to +read commands (a shell script), and the remaining arguments are set as the +positional parameters of the shell ($1, $2, etc). +Otherwise, the shell +reads commands from its standard input. +.Ss Argument List Processing +All of the single letter options that have a corresponding name can be +used as an argument to the +.Fl o +option. +The set +.Fl o +name is provided next to the single letter option in +the description below. +Specifying a dash +.Dq - +turns the option on, while using a plus +.Dq + +disables the option. +The following options can be set from the command line or +with the +.Ic set +builtin (described later). +.Bl -tag -width aaaallexportfoo -offset indent +.It Fl a Em allexport +Export all variables assigned to. +.It Fl c +Read commands from the +.Ar command_string +operand instead of from the standard input. +Special parameter 0 will be set from the +.Ar command_name +operand and the positional parameters ($1, $2, etc.) +set from the remaining argument operands. +.It Fl C Em noclobber +Don't overwrite existing files with +.Dq \*[Gt] . +.It Fl e Em errexit +If not interactive, exit immediately if any untested command fails. +The exit status of a command is considered to be +explicitly tested if the command is used to control an +.Ic if , +.Ic elif , +.Ic while , +or +.Ic until ; +or if the command is the left hand operand of an +.Dq && +or +.Dq || +operator. +.It Fl f Em noglob +Disable pathname expansion. +.It Fl n Em noexec +If not interactive, read commands but do not execute them. +This is useful for checking the syntax of shell scripts. +.It Fl u Em nounset +Write a message to standard error when attempting to expand a variable +that is not set, and if the shell is not interactive, exit immediately. +.It Fl v Em verbose +The shell writes its input to standard error as it is read. +Useful for debugging. +.It Fl x Em xtrace +Write each command to standard error (preceded by a +.Sq +\ ) +before it is executed. +Useful for debugging. +.It Fl I Em ignoreeof +Ignore EOF's from input when interactive. +.It Fl i Em interactive +Force the shell to behave interactively. +.It Fl l +Make dash act as if it had been invoked as a login shell. +.It Fl m Em monitor +Turn on job control (set automatically when interactive). +.It Fl s Em stdin +Read commands from standard input (set automatically if no file arguments +are present). +This option has no effect when set after the shell has +already started running (i.e. with +.Ic set ) . +.It Fl V Em vi +Enable the built-in +.Xr vi 1 +command line editor (disables +.Fl E +if it has been set). +.It Fl E Em emacs +Enable the built-in +.Xr emacs 1 +command line editor (disables +.Fl V +if it has been set). +.It Fl b Em notify +Enable asynchronous notification of background job completion. +(UNIMPLEMENTED for 4.4alpha) +.El +.Ss Lexical Structure +The shell reads input in terms of lines from a file and breaks it up into +words at whitespace (blanks and tabs), and at certain sequences of +characters that are special to the shell called +.Dq operators . +There are two types of operators: control operators and redirection +operators (their meaning is discussed later). +Following is a list of operators: +.Bl -ohang -offset indent +.It "Control operators:" +.Dl & && \&( \&) \&; ;; | || \*[Lt]newline\*[Gt] +.It "Redirection operators:" +.Dl \*[Lt] \*[Gt] \*[Gt]| \*[Lt]\*[Lt] \*[Gt]\*[Gt] \*[Lt]& \*[Gt]& \*[Lt]\*[Lt]- \*[Lt]\*[Gt] +.El +.Ss Quoting +Quoting is used to remove the special meaning of certain characters or +words to the shell, such as operators, whitespace, or keywords. +There are three types of quoting: matched single quotes, +matched double quotes, and backslash. +.Ss Backslash +A backslash preserves the literal meaning of the following +character, with the exception of +.Aq newline . +A backslash preceding a +.Aq newline +is treated as a line continuation. +.Ss Single Quotes +Enclosing characters in single quotes preserves the literal meaning of all +the characters (except single quotes, making it impossible to put +single-quotes in a single-quoted string). +.Ss Double Quotes +Enclosing characters within double quotes preserves the literal +meaning of all characters except dollarsign +.Pq $ , +backquote +.Pq ` , +and backslash +.Pq \e . +The backslash inside double quotes is historically weird, and serves to +quote only the following characters: +.Dl $ ` \*q \e \*[Lt]newline\*[Gt] . +Otherwise it remains literal. +.Ss Reserved Words +Reserved words are words that have special meaning to the +shell and are recognized at the beginning of a line and +after a control operator. +The following are reserved words: +.Bl -column while while while while while -offset indent +.It ! Ta elif Ta fi Ta while Ta case +.It else Ta for Ta then Ta { Ta } +.It do Ta done Ta until Ta if Ta esac +.El +.Pp +Their meaning is discussed later. +.Ss Aliases +An alias is a name and corresponding value set using the +.Xr alias 1 +builtin command. +Whenever a reserved word may occur (see above), +and after checking for reserved words, the shell +checks the word to see if it matches an alias. +If it does, it replaces it in the input stream with its value. +For example, if there is an alias called +.Dq lf +with the value +.Dq "ls -F" , +then the input: +.Pp +.Dl lf foobar Aq return +.Pp +would become +.Pp +.Dl ls -F foobar Aq return +.Pp +Aliases provide a convenient way for naive users to create shorthands for +commands without having to learn how to create functions with arguments. +They can also be used to create lexically obscure code. +This use is discouraged. +.Ss Commands +The shell interprets the words it reads according to a language, the +specification of which is outside the scope of this man page (refer to the +BNF in the +.Tn POSIX +1003.2 document). +Essentially though, a line is read and if the first +word of the line (or after a control operator) is not a reserved word, +then the shell has recognized a simple command. +Otherwise, a complex +command or some other special construct may have been recognized. +.Ss Simple Commands +If a simple command has been recognized, the shell performs +the following actions: +.Bl -enum -offset indent +.It +Leading words of the form +.Dq name=value +are stripped off and assigned to the environment of the simple command. +Redirection operators and their arguments (as described below) are +stripped off and saved for processing. +.It +The remaining words are expanded as described in +the section called +.Dq Expansions , +and the first remaining word is considered the command name and the +command is located. +The remaining words are considered the arguments of the command. +If no command name resulted, then the +.Dq name=value +variable assignments recognized in item 1 affect the current shell. +.It +Redirections are performed as described in the next section. +.El +.Ss Redirections +Redirections are used to change where a command reads its input or sends +its output. +In general, redirections open, close, or duplicate an +existing reference to a file. +The overall format used for redirection is: +.Pp +.Dl [n] Va redir-op Ar file +.Pp +where +.Va redir-op +is one of the redirection operators mentioned previously. +Following is a list of the possible redirections. +The +.Bq n +is an optional number, as in +.Sq 3 +(not +.Sq Bq 3 ) , +that refers to a file descriptor. +.Bl -tag -width aaabsfiles -offset indent +.It [n] Ns \*[Gt] file +Redirect standard output (or n) to file. +.It [n] Ns \*[Gt]| file +Same, but override the +.Fl C +option. +.It [n] Ns \*[Gt]\*[Gt] file +Append standard output (or n) to file. +.It [n] Ns \*[Lt] file +Redirect standard input (or n) from file. +.It [n1] Ns \*[Lt]& Ns n2 +Duplicate standard input (or n1) from file descriptor n2. +.It [n] Ns \*[Lt]&- +Close standard input (or n). +.It [n1] Ns \*[Gt]& Ns n2 +Duplicate standard output (or n1) to n2. +.It [n] Ns \*[Gt]&- +Close standard output (or n). +.It [n] Ns \*[Lt]\*[Gt] file +Open file for reading and writing on standard input (or n). +.El +.Pp +The following redirection is often called a +.Dq here-document . +.Bl -item -offset indent +.It +.Li [n]\*[Lt]\*[Lt] delimiter +.Dl here-doc-text ... +.Li delimiter +.El +.Pp +All the text on successive lines up to the delimiter is saved away and +made available to the command on standard input, or file descriptor n if +it is specified. +If the delimiter as specified on the initial line is +quoted, then the here-doc-text is treated literally, otherwise the text is +subjected to parameter expansion, command substitution, and arithmetic +expansion (as described in the section on +.Dq Expansions ) . +If the operator is +.Dq \*[Lt]\*[Lt]- +instead of +.Dq \*[Lt]\*[Lt] , +then leading tabs in the here-doc-text are stripped. +.Ss Search and Execution +There are three types of commands: shell functions, builtin commands, and +normal programs -- and the command is searched for (by name) in that order. +They each are executed in a different way. +.Pp +When a shell function is executed, all of the shell positional parameters +(except $0, which remains unchanged) are set to the arguments of the shell +function. +The variables which are explicitly placed in the environment of +the command (by placing assignments to them before the function name) are +made local to the function and are set to the values given. +Then the command given in the function definition is executed. +The positional parameters are restored to their original values +when the command completes. +This all occurs within the current shell. +.Pp +Shell builtins are executed internally to the shell, without spawning a +new process. +.Pp +Otherwise, if the command name doesn't match a function or builtin, the +command is searched for as a normal program in the file system (as +described in the next section). +When a normal program is executed, the shell runs the program, +passing the arguments and the environment to the program. +If the program is not a normal executable file (i.e., if it does +not begin with the "magic number" whose +.Tn ASCII +representation is "#!", so +.Xr execve 2 +returns +.Er ENOEXEC +then) the shell will interpret the program in a subshell. +The child shell will reinitialize itself in this case, +so that the effect will be as if a +new shell had been invoked to handle the ad-hoc shell script, except that +the location of hashed commands located in the parent shell will be +remembered by the child. +.Pp +Note that previous versions of this document and the source code itself +misleadingly and sporadically refer to a shell script without a magic +number as a "shell procedure". +.Ss Path Search +When locating a command, the shell first looks to see if it has a shell +function by that name. +Then it looks for a builtin command by that name. +If a builtin command is not found, one of two things happen: +.Bl -enum +.It +Command names containing a slash are simply executed without performing +any searches. +.It +The shell searches each entry in +.Ev PATH +in turn for the command. +The value of the +.Ev PATH +variable should be a series of entries separated by colons. +Each entry consists of a directory name. +The current directory may be indicated +implicitly by an empty directory name, or explicitly by a single period. +.El +.Ss Command Exit Status +Each command has an exit status that can influence the behaviour +of other shell commands. +The paradigm is that a command exits +with zero for normal or success, and non-zero for failure, +error, or a false indication. +The man page for each command +should indicate the various exit codes and what they mean. +Additionally, the builtin commands return exit codes, as does +an executed shell function. +.Pp +If a command consists entirely of variable assignments then the +exit status of the command is that of the last command substitution +if any, otherwise 0. +.Ss Complex Commands +Complex commands are combinations of simple commands with control +operators or reserved words, together creating a larger complex command. +More generally, a command is one of the following: +.Bl -bullet +.It +simple command +.It +pipeline +.It +list or compound-list +.It +compound command +.It +function definition +.El +.Pp +Unless otherwise stated, the exit status of a command is that of the last +simple command executed by the command. +.Ss Pipelines +A pipeline is a sequence of one or more commands separated +by the control operator |. +The standard output of all but +the last command is connected to the standard input +of the next command. +The standard output of the last +command is inherited from the shell, as usual. +.Pp +The format for a pipeline is: +.Pp +.Dl [!] command1 [ | command2 ...] +.Pp +The standard output of command1 is connected to the standard input of +command2. +The standard input, standard output, or both of a command is +considered to be assigned by the pipeline before any redirection specified +by redirection operators that are part of the command. +.Pp +If the pipeline is not in the background (discussed later), the shell +waits for all commands to complete. +.Pp +If the reserved word ! does not precede the pipeline, the exit status is +the exit status of the last command specified in the pipeline. +Otherwise, the exit status is the logical NOT of the exit status of the +last command. +That is, if the last command returns zero, the exit status +is 1; if the last command returns greater than zero, the exit status is +zero. +.Pp +Because pipeline assignment of standard input or standard output or both +takes place before redirection, it can be modified by redirection. +For example: +.Pp +.Dl $ command1 2\*[Gt]&1 | command2 +.Pp +sends both the standard output and standard error of command1 +to the standard input of command2. +.Pp +A ; or +.Aq newline +terminator causes the preceding AND-OR-list (described +next) to be executed sequentially; a & causes asynchronous execution of +the preceding AND-OR-list. +.Pp +Note that unlike some other shells, each process in the pipeline is a +child of the invoking shell (unless it is a shell builtin, in which case +it executes in the current shell -- but any effect it has on the +environment is wiped). +.Ss Background Commands -- & +If a command is terminated by the control operator ampersand (&), the +shell executes the command asynchronously -- that is, the shell does not +wait for the command to finish before executing the next command. +.Pp +The format for running a command in background is: +.Pp +.Dl command1 & [command2 & ...] +.Pp +If the shell is not interactive, the standard input of an asynchronous +command is set to +.Pa /dev/null . +.Ss Lists -- Generally Speaking +A list is a sequence of zero or more commands separated by newlines, +semicolons, or ampersands, and optionally terminated by one of these three +characters. +The commands in a list are executed in the order they are written. +If command is followed by an ampersand, the shell starts the +command and immediately proceed onto the next command; otherwise it waits +for the command to terminate before proceeding to the next one. +.Ss Short-Circuit List Operators +.Dq && +and +.Dq || +are AND-OR list operators. +.Dq && +executes the first command, and then executes the second command iff the +exit status of the first command is zero. +.Dq || +is similar, but executes the second command iff the exit status of the first +command is nonzero. +.Dq && +and +.Dq || +both have the same priority. +.Ss Flow-Control Constructs -- if, while, for, case +The syntax of the if command is +.Bd -literal -offset indent +if list +then list +[ elif list +then list ] ... +[ else list ] +fi +.Ed +.Pp +The syntax of the while command is +.Bd -literal -offset indent +while list +do list +done +.Ed +.Pp +The two lists are executed repeatedly while the exit status of the +first list is zero. +The until command is similar, but has the word +until in place of while, which causes it to +repeat until the exit status of the first list is zero. +.Pp +The syntax of the for command is +.Bd -literal -offset indent +for variable [ in [ word ... ] ] +do list +done +.Ed +.Pp +The words following +.Pa in +are expanded, and then the list is executed repeatedly with the +variable set to each word in turn. +Omitting in word ... is equivalent to in "$@". +.Pp +The syntax of the break and continue command is +.Bd -literal -offset indent +break [ num ] +continue [ num ] +.Ed +.Pp +Break terminates the num innermost for or while loops. +Continue continues with the next iteration of the innermost loop. +These are implemented as builtin commands. +.Pp +The syntax of the case command is +.Bd -literal -offset indent +case word in +[(]pattern) list ;; +\&... +esac +.Ed +.Pp +The pattern can actually be one or more patterns (see +.Sx Shell Patterns +described later), separated by +.Dq \*(Ba +characters. +The +.Do +( +.Dc +character before the pattern is optional. +.Ss Grouping Commands Together +Commands may be grouped by writing either +.Pp +.Dl (list) +.Pp +or +.Pp +.Dl { list; } +.Pp +The first of these executes the commands in a subshell. +Builtin commands grouped into a (list) will not affect the current shell. +The second form does not fork another shell so is slightly more efficient. +Grouping commands together this way allows you to redirect +their output as though they were one program: +.Pp +.Bd -literal -offset indent +{ printf \*q hello \*q ; printf \*q world\\n" ; } \*[Gt] greeting +.Ed +.Pp +Note that +.Dq } +must follow a control operator (here, +.Dq \&; ) +so that it is recognized as a reserved word and not as another command argument. +.Ss Functions +The syntax of a function definition is +.Pp +.Dl name ( ) command +.Pp +A function definition is an executable statement; when executed it +installs a function named name and returns an exit status of zero. +The command is normally a list enclosed between +.Dq { +and +.Dq } . +.Pp +Variables may be declared to be local to a function by using a local +command. +This should appear as the first statement of a function, and the syntax is +.Pp +.Dl local [ variable | - ] ... +.Pp +Local is implemented as a builtin command. +.Pp +When a variable is made local, it inherits the initial value and exported +and readonly flags from the variable with the same name in the surrounding +scope, if there is one. +Otherwise, the variable is initially unset. +The shell uses dynamic scoping, so that if you make the variable x local to +function f, which then calls function g, references to the variable x made +inside g will refer to the variable x declared inside f, not to the global +variable named x. +.Pp +The only special parameter that can be made local is +.Dq - . +Making +.Dq - +local any shell options that are changed via the set command inside the +function to be restored to their original values when the function +returns. +.Pp +The syntax of the return command is +.Pp +.Dl return [ exitstatus ] +.Pp +It terminates the currently executing function. +Return is implemented as a builtin command. +.Ss Variables and Parameters +The shell maintains a set of parameters. +A parameter denoted by a name is called a variable. +When starting up, the shell turns all the environment +variables into shell variables. +New variables can be set using the form +.Pp +.Dl name=value +.Pp +Variables set by the user must have a name consisting solely of +alphabetics, numerics, and underscores - the first of which must not be +numeric. +A parameter can also be denoted by a number or a special +character as explained below. +.Ss Positional Parameters +A positional parameter is a parameter denoted by a number (n \*[Gt] 0). +The shell sets these initially to the values of its command line arguments +that follow the name of the shell script. +The +.Ic set +builtin can also be used to set or reset them. +.Ss Special Parameters +A special parameter is a parameter denoted by one of the following special +characters. +The value of the parameter is listed next to its character. +.Bl -tag -width thinhyphena +.It * +Expands to the positional parameters, starting from one. +When the +expansion occurs within a double-quoted string it expands to a single +field with the value of each parameter separated by the first character of +the +.Ev IFS +variable, or by a +.Aq space +if +.Ev IFS +is unset. +.It @ +Expands to the positional parameters, starting from one. +When the expansion occurs within double-quotes, each positional +parameter expands as a separate argument. +If there are no positional parameters, the +expansion of @ generates zero arguments, even when @ is +double-quoted. +What this basically means, for example, is +if $1 is +.Dq abc +and $2 is +.Dq def ghi , +then +.Qq $@ +expands to +the two arguments: +.Pp +.Sm off +.Dl \*q abc \*q \ \*q def\ ghi \*q +.Sm on +.It # +Expands to the number of positional parameters. +.It ? +Expands to the exit status of the most recent pipeline. +.It - (Hyphen.) +Expands to the current option flags (the single-letter +option names concatenated into a string) as specified on +invocation, by the set builtin command, or implicitly +by the shell. +.It $ +Expands to the process ID of the invoked shell. +A subshell retains the same value of $ as its parent. +.It ! +Expands to the process ID of the most recent background +command executed from the current shell. +For a pipeline, the process ID is that of the last command in the pipeline. +.It 0 (Zero.) +Expands to the name of the shell or shell script. +.El +.Ss Word Expansions +This clause describes the various expansions that are performed on words. +Not all expansions are performed on every word, as explained later. +.Pp +Tilde expansions, parameter expansions, command substitutions, arithmetic +expansions, and quote removals that occur within a single word expand to a +single field. +It is only field splitting or pathname expansion that can +create multiple fields from a single word. +The single exception to this +rule is the expansion of the special parameter @ within double-quotes, as +was described above. +.Pp +The order of word expansion is: +.Bl -enum +.It +Tilde Expansion, Parameter Expansion, Command Substitution, +Arithmetic Expansion (these all occur at the same time). +.It +Field Splitting is performed on fields +generated by step (1) unless the +.Ev IFS +variable is null. +.It +Pathname Expansion (unless set +.Fl f +is in effect). +.It +Quote Removal. +.El +.Pp +The $ character is used to introduce parameter expansion, command +substitution, or arithmetic evaluation. +.Ss Tilde Expansion (substituting a user's home directory) +A word beginning with an unquoted tilde character (~) is +subjected to tilde expansion. +All the characters up to +a slash (/) or the end of the word are treated as a username +and are replaced with the user's home directory. +If the username is missing (as in +.Pa ~/foobar ) , +the tilde is replaced with the value of the +.Va HOME +variable (the current user's home directory). +.Ss Parameter Expansion +The format for parameter expansion is as follows: +.Pp +.Dl ${expression} +.Pp +where expression consists of all characters until the matching +.Dq } . +Any +.Dq } +escaped by a backslash or within a quoted string, and characters in +embedded arithmetic expansions, command substitutions, and variable +expansions, are not examined in determining the matching +.Dq } . +.Pp +The simplest form for parameter expansion is: +.Pp +.Dl ${parameter} +.Pp +The value, if any, of parameter is substituted. +.Pp +The parameter name or symbol can be enclosed in braces, which are +optional except for positional parameters with more than one digit or +when parameter is followed by a character that could be interpreted as +part of the name. +If a parameter expansion occurs inside double-quotes: +.Bl -enum +.It +Pathname expansion is not performed on the results of the expansion. +.It +Field splitting is not performed on the results of the +expansion, with the exception of @. +.El +.Pp +In addition, a parameter expansion can be modified by using one of the +following formats. +.Bl -tag -width aaparameterwordaaaaa +.It ${parameter:-word} +Use Default Values. +If parameter is unset or null, the expansion of word +is substituted; otherwise, the value of parameter is substituted. +.It ${parameter:=word} +Assign Default Values. +If parameter is unset or null, the expansion of +word is assigned to parameter. +In all cases, the final value of parameter is substituted. +Only variables, not positional parameters or special +parameters, can be assigned in this way. +.It ${parameter:?[word]} +Indicate Error if Null or Unset. +If parameter is unset or null, the +expansion of word (or a message indicating it is unset if word is omitted) +is written to standard error and the shell exits with a nonzero exit status. +Otherwise, the value of parameter is substituted. +An interactive shell need not exit. +.It ${parameter:+word} +Use Alternative Value. +If parameter is unset or null, null is +substituted; otherwise, the expansion of word is substituted. +.El +.Pp +In the parameter expansions shown previously, use of the colon in the +format results in a test for a parameter that is unset or null; omission +of the colon results in a test for a parameter that is only unset. +.Bl -tag -width aaparameterwordaaaaa +.It ${#parameter} +String Length. +The length in characters of the value of parameter. +.El +.Pp +The following four varieties of parameter expansion provide for substring +processing. +In each case, pattern matching notation (see +.Sx Shell Patterns ) , +rather than regular expression notation, is used to evaluate the patterns. +If parameter is * or @, the result of the expansion is unspecified. +Enclosing the full parameter expansion string in double-quotes does not +cause the following four varieties of pattern characters to be quoted, +whereas quoting characters within the braces has this effect. +.Bl -tag -width aaparameterwordaaaaa +.It ${parameter%word} +Remove Smallest Suffix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the +smallest portion of the suffix matched by the pattern deleted. +.It ${parameter%%word} +Remove Largest Suffix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the largest +portion of the suffix matched by the pattern deleted. +.It ${parameter#word} +Remove Smallest Prefix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the +smallest portion of the prefix matched by the pattern deleted. +.It ${parameter##word} +Remove Largest Prefix Pattern. +The word is expanded to produce a pattern. +The parameter expansion then results in parameter, with the largest +portion of the prefix matched by the pattern deleted. +.El +.Ss Command Substitution +Command substitution allows the output of a command to be substituted in +place of the command name itself. +Command substitution occurs when the command is enclosed as follows: +.Pp +.Dl $(command) +.Pp +or +.Po +.Dq backquoted +version +.Pc : +.Pp +.Dl `command` +.Pp +The shell expands the command substitution by executing command in a +subshell environment and replacing the command substitution with the +standard output of the command, removing sequences of one or more +.Ao newline Ac Ns s +at the end of the substitution. +(Embedded +.Ao newline Ac Ns s +before +the end of the output are not removed; however, during field splitting, +they may be translated into +.Ao space Ac Ns s , +depending on the value of +.Ev IFS +and quoting that is in effect.) +.Ss Arithmetic Expansion +Arithmetic expansion provides a mechanism for evaluating an arithmetic +expression and substituting its value. +The format for arithmetic expansion is as follows: +.Pp +.Dl $((expression)) +.Pp +The expression is treated as if it were in double-quotes, except +that a double-quote inside the expression is not treated specially. +The shell expands all tokens in the expression for parameter expansion, +command substitution, and quote removal. +.Pp +Next, the shell treats this as an arithmetic expression and +substitutes the value of the expression. +.Ss White Space Splitting (Field Splitting) +After parameter expansion, command substitution, and +arithmetic expansion the shell scans the results of +expansions and substitutions that did not occur in double-quotes for +field splitting and multiple fields can result. +.Pp +The shell treats each character of the +.Ev IFS +as a delimiter and uses the delimiters to split the results of parameter +expansion and command substitution into fields. +.Ss Pathname Expansion (File Name Generation) +Unless the +.Fl f +flag is set, file name generation is performed after word splitting is +complete. +Each word is viewed as a series of patterns, separated by slashes. +The process of expansion replaces the word with the names of all +existing files whose names can be formed by replacing each pattern with a +string that matches the specified pattern. +There are two restrictions on +this: first, a pattern cannot match a string containing a slash, and +second, a pattern cannot match a string starting with a period unless the +first character of the pattern is a period. +The next section describes the +patterns used for both Pathname Expansion and the +.Ic case +command. +.Ss Shell Patterns +A pattern consists of normal characters, which match themselves, +and meta-characters. +The meta-characters are +.Dq \&! , +.Dq * , +.Dq \&? , +and +.Dq \&[ . +These characters lose their special meanings if they are quoted. +When command or variable substitution is performed +and the dollar sign or back quotes are not double quoted, +the value of the variable or the output of +the command is scanned for these characters and they are turned into +meta-characters. +.Pp +An asterisk +.Pq Dq * +matches any string of characters. +A question mark matches any single character. +A left bracket +.Pq Dq \&[ +introduces a character class. +The end of the character class is indicated by a +.Pq Dq \&] ; +if the +.Dq \&] +is missing then the +.Dq \&[ +matches a +.Dq \&[ +rather than introducing a character class. +A character class matches any of the characters between the square brackets. +A range of characters may be specified using a minus sign. +The character class may be complemented +by making an exclamation point the first character of the character class. +.Pp +To include a +.Dq \&] +in a character class, make it the first character listed (after the +.Dq \&! , +if any). +To include a minus sign, make it the first or last character listed. +.Ss Builtins +This section lists the builtin commands which are builtin because they +need to perform some operation that can't be performed by a separate +process. +In addition to these, there are several other commands that may +be builtin for efficiency (e.g. +.Xr printf 1 , +.Xr echo 1 , +.Xr test 1 , +etc). +.Bl -tag -width 5n +.It : +.It true +A null command that returns a 0 (true) exit value. +.It \&. file +The commands in the specified file are read and executed by the shell. +.It alias Op Ar name Ns Op Ar "=string ..." +If +.Ar name=string +is specified, the shell defines the alias +.Ar name +with value +.Ar string . +If just +.Ar name +is specified, the value of the alias +.Ar name +is printed. +With no arguments, the +.Ic alias +builtin prints the +names and values of all defined aliases (see +.Ic unalias ) . +.It bg [ Ar job ] ... +Continue the specified jobs (or the current job if no +jobs are given) in the background. +.It Xo command +.Op Fl p +.Op Fl v +.Op Fl V +.Ar command +.Op Ar arg ... +.Xc +Execute the specified command but ignore shell functions when searching +for it. +(This is useful when you +have a shell function with the same name as a builtin command.) +.Bl -tag -width 5n +.It Fl p +search for command using a +.Ev PATH +that guarantees to find all the standard utilities. +.It Fl V +Do not execute the command but +search for the command and print the resolution of the +command search. +This is the same as the type builtin. +.It Fl v +Do not execute the command but +search for the command and print the absolute pathname +of utilities, the name for builtins or the expansion of aliases. +.El +.It cd Ar - +.It Xo cd Op Fl LP +.Op Ar directory +.Xc +Switch to the specified directory (default +.Ev HOME ) . +If an entry for +.Ev CDPATH +appears in the environment of the +.Ic cd +command or the shell variable +.Ev CDPATH +is set and the directory name does not begin with a slash, then the +directories listed in +.Ev CDPATH +will be searched for the specified directory. +The format of +.Ev CDPATH +is the same as that of +.Ev PATH . +If a single dash is specified as the argument, it will be replaced by the +value of +.Ev OLDPWD . +The +.Ic cd +command will print out the name of the +directory that it actually switched to if this is different from the name +that the user gave. +These may be different either because the +.Ev CDPATH +mechanism was used or because the argument is a single dash. +The +.Fl P +option causes the physical directory structure to be used, that is, all +symbolic links are resolved to their respective values. The +.Fl L +option turns off the effect of any preceding +.Fl P +options. +.It Xo echo Op Fl n +.Ar args... +.Xc +Print the arguments on the standard output, separated by spaces. +Unless the +.Fl n +option is present, a newline is output following the arguments. +.Pp +If any of the following sequences of characters is encountered during +output, the sequence is not output. Instead, the specified action is +performed: +.Bl -tag -width indent +.It Li \eb +A backspace character is output. +.It Li \ec +Subsequent output is suppressed. This is normally used at the end of the +last argument to suppress the trailing newline that +.Ic echo +would otherwise output. +.It Li \ef +Output a form feed. +.It Li \en +Output a newline character. +.It Li \er +Output a carriage return. +.It Li \et +Output a (horizontal) tab character. +.It Li \ev +Output a vertical tab. +.It Li \e0 Ns Ar digits +Output the character whose value is given by zero to three octal digits. +If there are zero digits, a nul character is output. +.It Li \e\e +Output a backslash. +.El +.Pp +All other backslash sequences elicit undefined behaviour. +.It eval Ar string ... +Concatenate all the arguments with spaces. +Then re-parse and execute the command. +.It exec Op Ar command arg ... +Unless command is omitted, the shell process is replaced with the +specified program (which must be a real program, not a shell builtin or +function). +Any redirections on the +.Ic exec +command are marked as permanent, so that they are not undone when the +.Ic exec +command finishes. +.It exit Op Ar exitstatus +Terminate the shell process. +If +.Ar exitstatus +is given it is used as the exit status of the shell; otherwise the +exit status of the preceding command is used. +.It export Ar name ... +.It export Fl p +The specified names are exported so that they will appear in the +environment of subsequent commands. +The only way to un-export a variable is to unset it. +The shell allows the value of a variable to be set at the +same time it is exported by writing +.Pp +.Dl export name=value +.Pp +With no arguments the export command lists the names of all exported variables. +With the +.Fl p +option specified the output will be formatted suitably for non-interactive use. +.It Xo fc Op Fl e Ar editor +.Op Ar first Op Ar last +.Xc +.It Xo fc Fl l +.Op Fl nr +.Op Ar first Op Ar last +.Xc +.It Xo fc Fl s Op Ar old=new +.Op Ar first +.Xc +The +.Ic fc +builtin lists, or edits and re-executes, commands previously entered +to an interactive shell. +.Bl -tag -width 5n +.It Fl e No editor +Use the editor named by editor to edit the commands. +The editor string is a command name, subject to search via the +.Ev PATH +variable. +The value in the +.Ev FCEDIT +variable is used as a default when +.Fl e +is not specified. +If +.Ev FCEDIT +is null or unset, the value of the +.Ev EDITOR +variable is used. +If +.Ev EDITOR +is null or unset, +.Xr ed 1 +is used as the editor. +.It Fl l No (ell) +List the commands rather than invoking an editor on them. +The commands are written in the sequence indicated by +the first and last operands, as affected by +.Fl r , +with each command preceded by the command number. +.It Fl n +Suppress command numbers when listing with -l. +.It Fl r +Reverse the order of the commands listed (with +.Fl l ) +or edited (with neither +.Fl l +nor +.Fl s ) . +.It Fl s +Re-execute the command without invoking an editor. +.It first +.It last +Select the commands to list or edit. +The number of previous commands that +can be accessed are determined by the value of the +.Ev HISTSIZE +variable. +The value of first or last or both are one of the following: +.Bl -tag -width 5n +.It [+]number +A positive number representing a command number; command numbers can be +displayed with the +.Fl l +option. +.It Fl number +A negative decimal number representing the command that was executed +number of commands previously. +For example, \-1 is the immediately previous command. +.El +.It string +A string indicating the most recently entered command that begins with +that string. +If the old=new operand is not also specified with +.Fl s , +the string form of the first operand cannot contain an embedded equal sign. +.El +.Pp +The following environment variables affect the execution of fc: +.Bl -tag -width HISTSIZE +.It Ev FCEDIT +Name of the editor to use. +.It Ev HISTSIZE +The number of previous commands that are accessible. +.El +.It fg Op Ar job +Move the specified job or the current job to the foreground. +.It getopts Ar optstring var +The +.Tn POSIX +.Ic getopts +command, not to be confused with the +.Em Bell Labs +-derived +.Xr getopt 1 . +.Pp +The first argument should be a series of letters, each of which may be +optionally followed by a colon to indicate that the option requires an +argument. +The variable specified is set to the parsed option. +.Pp +The +.Ic getopts +command deprecates the older +.Xr getopt 1 +utility due to its handling of arguments containing whitespace. +.Pp +The +.Ic getopts +builtin may be used to obtain options and their arguments +from a list of parameters. +When invoked, +.Ic getopts +places the value of the next option from the option string in the list in +the shell variable specified by +.Va var +and its index in the shell variable +.Ev OPTIND . +When the shell is invoked, +.Ev OPTIND +is initialized to 1. +For each option that requires an argument, the +.Ic getopts +builtin will place it in the shell variable +.Ev OPTARG . +If an option is not allowed for in the +.Va optstring , +then +.Ev OPTARG +will be unset. +.Pp +.Va optstring +is a string of recognized option letters (see +.Xr getopt 3 ) . +If a letter is followed by a colon, the option is expected to have an +argument which may or may not be separated from it by white space. +If an option character is not found where expected, +.Ic getopts +will set the variable +.Va var +to a +.Dq \&? ; +.Ic getopts +will then unset +.Ev OPTARG +and write output to standard error. +By specifying a colon as the first character of +.Va optstring +all errors will be ignored. +.Pp +A nonzero value is returned when the last option is reached. +If there are no remaining arguments, +.Ic getopts +will set +.Va var +to the special option, +.Dq -- , +otherwise, it will set +.Va var +to +.Dq \&? . +.Pp +The following code fragment shows how one might process the arguments +for a command that can take the options +.Op a +and +.Op b , +and the option +.Op c , +which requires an argument. +.Pp +.Bd -literal -offset indent +while getopts abc: f +do + case $f in + a | b) flag=$f;; + c) carg=$OPTARG;; + \\?) echo $USAGE; exit 1;; + esac +done +shift `expr $OPTIND - 1` +.Ed +.Pp +This code will accept any of the following as equivalent: +.Pp +.Bd -literal -offset indent +cmd \-acarg file file +cmd \-a \-c arg file file +cmd \-carg -a file file +cmd \-a \-carg \-\- file file +.Ed +.It hash Fl rv Ar command ... +The shell maintains a hash table which remembers the +locations of commands. +With no arguments whatsoever, +the +.Ic hash +command prints out the contents of this table. +Entries which have not been looked at since the last +.Ic cd +command are marked with an asterisk; it is possible for these entries +to be invalid. +.Pp +With arguments, the +.Ic hash +command removes the specified commands from the hash table (unless +they are functions) and then locates them. +With the +.Fl v +option, hash prints the locations of the commands as it finds them. +The +.Fl r +option causes the hash command to delete all the entries in the hash table +except for functions. +.It pwd Op Fl LP +builtin command remembers what the current directory +is rather than recomputing it each time. +This makes it faster. +However, if the current directory is renamed, the builtin version of +.Ic pwd +will continue to print the old name for the directory. +The +.Fl P +option causes the physical value of the current working directory to be shown, +that is, all symbolic links are resolved to their respective values. The +.Fl L +option turns off the effect of any preceding +.Fl P +options. +.It Xo read Op Fl p Ar prompt +.Op Fl r +.Ar variable +.Op Ar ... +.Xc +The prompt is printed if the +.Fl p +option is specified and the standard input is a terminal. +Then a line is read from the standard input. +The trailing newline is deleted from the +line and the line is split as described in the section on word splitting +above, and the pieces are assigned to the variables in order. +At least one variable must be specified. +If there are more pieces than variables, the remaining pieces +(along with the characters in +.Ev IFS +that separated them) are assigned to the last variable. +If there are more variables than pieces, +the remaining variables are assigned the null string. +The +.Ic read +builtin will indicate success unless EOF is encountered on input, in +which case failure is returned. +.Pp +By default, unless the +.Fl r +option is specified, the backslash +.Dq \e +acts as an escape character, causing the following character to be treated +literally. +If a backslash is followed by a newline, the backslash and the +newline will be deleted. +.It readonly Ar name ... +.It readonly Fl p +The specified names are marked as read only, so that they cannot be +subsequently modified or unset. +The shell allows the value of a variable +to be set at the same time it is marked read only by writing +.Pp +.Dl readonly name=value +.Pp +With no arguments the readonly command lists the names of all read only +variables. +With the +.Fl p +option specified the output will be formatted suitably for non-interactive use. +.Pp +.It Xo printf Ar format +.Op Ar arguments ... +.Xc +.Ic printf +formats and prints its arguments, after the first, under control +of the +.Ar format . +The +.Ar format +is a character string which contains three types of objects: plain characters, +which are simply copied to standard output, character escape sequences which +are converted and copied to the standard output, and format specifications, +each of which causes printing of the next successive +.Ar argument . +.Pp +The +.Ar arguments +after the first are treated as strings if the corresponding format is +either +.Cm b , +.Cm c +or +.Cm s ; +otherwise it is evaluated as a C constant, with the following extensions: +.Pp +.Bl -bullet -offset indent -compact +.It +A leading plus or minus sign is allowed. +.It +If the leading character is a single or double quote, the value is the +.Tn ASCII +code of the next character. +.El +.Pp +The format string is reused as often as necessary to satisfy the +.Ar arguments . +Any extra format specifications are evaluated with zero or the null +string. +.Pp +Character escape sequences are in backslash notation as defined in +.St -ansiC . +The characters and their meanings are as follows: +.Bl -tag -width Ds -offset indent +.It Cm \ea +Write a \*[Lt]bell\*[Gt] character. +.It Cm \eb +Write a \*[Lt]backspace\*[Gt] character. +.It Cm \ef +Write a \*[Lt]form-feed\*[Gt] character. +.It Cm \en +Write a \*[Lt]new-line\*[Gt] character. +.It Cm \er +Write a \*[Lt]carriage return\*[Gt] character. +.It Cm \et +Write a \*[Lt]tab\*[Gt] character. +.It Cm \ev +Write a \*[Lt]vertical tab\*[Gt] character. +.It Cm \e\e +Write a backslash character. +.It Cm \e Ns Ar num +Write an 8\-bit character whose +.Tn ASCII +value is the 1\-, 2\-, or 3\-digit +octal number +.Ar num . +.El +.Pp +Each format specification is introduced by the percent character +(``%''). +The remainder of the format specification includes, +in the following order: +.Bl -tag -width Ds +.It "Zero or more of the following flags:" +.Bl -tag -width Ds +.It Cm # +A `#' character +specifying that the value should be printed in an ``alternative form''. +For +.Cm b , +.Cm c , +.Cm d , +and +.Cm s +formats, this option has no effect. +For the +.Cm o +format the precision of the number is increased to force the first +character of the output string to a zero. +For the +.Cm x +.Pq Cm X +format, a non-zero result has the string +.Li 0x +.Pq Li 0X +prepended to it. +For +.Cm e , +.Cm E , +.Cm f , +.Cm g , +and +.Cm G +formats, the result will always contain a decimal point, even if no +digits follow the point (normally, a decimal point only appears in the +results of those formats if a digit follows the decimal point). +For +.Cm g +and +.Cm G +formats, trailing zeros are not removed from the result as they +would otherwise be. +.It Cm \&\- +A minus sign `\-' which specifies +.Em left adjustment +of the output in the indicated field; +.It Cm \&+ +A `+' character specifying that there should always be +a sign placed before the number when using signed formats. +.It Sq \&\ \& +A space specifying that a blank should be left before a positive number +for a signed format. +A `+' overrides a space if both are used; +.It Cm \&0 +A zero `0' character indicating that zero-padding should be used +rather than blank-padding. +A `\-' overrides a `0' if both are used; +.El +.It "Field Width:" +An optional digit string specifying a +.Em field width ; +if the output string has fewer characters than the field width it will +be blank-padded on the left (or right, if the left-adjustment indicator +has been given) to make up the field width (note that a leading zero +is a flag, but an embedded zero is part of a field width); +.It Precision : +An optional period, +.Sq Cm \&.\& , +followed by an optional digit string giving a +.Em precision +which specifies the number of digits to appear after the decimal point, +for +.Cm e +and +.Cm f +formats, or the maximum number of bytes to be printed +from a string +.Sm off +.Pf ( Cm b +.Sm on +and +.Cm s +formats); if the digit string is missing, the precision is treated +as zero; +.It Format : +A character which indicates the type of format to use (one of +.Cm diouxXfwEgGbcs ) . +.El +.Pp +A field width or precision may be +.Sq Cm \&* +instead of a digit string. +In this case an +.Ar argument +supplies the field width or precision. +.Pp +The format characters and their meanings are: +.Bl -tag -width Fl +.It Cm diouXx +The +.Ar argument +is printed as a signed decimal (d or i), unsigned octal, unsigned decimal, +or unsigned hexadecimal (X or x), respectively. +.It Cm f +The +.Ar argument +is printed in the style +.Sm off +.Pf [\-]ddd Cm \&. No ddd +.Sm on +where the number of d's +after the decimal point is equal to the precision specification for +the argument. +If the precision is missing, 6 digits are given; if the precision +is explicitly 0, no digits and no decimal point are printed. +.It Cm eE +The +.Ar argument +is printed in the style +.Sm off +.Pf [\-]d Cm \&. No ddd Cm e No \*(Pmdd +.Sm on +where there +is one digit before the decimal point and the number after is equal to +the precision specification for the argument; when the precision is +missing, 6 digits are produced. +An upper-case E is used for an `E' format. +.It Cm gG +The +.Ar argument +is printed in style +.Cm f +or in style +.Cm e +.Pq Cm E +whichever gives full precision in minimum space. +.It Cm b +Characters from the string +.Ar argument +are printed with backslash-escape sequences expanded. +.br +The following additional backslash-escape sequences are supported: +.Bl -tag -width Ds +.It Cm \ec +Causes +.Nm +to ignore any remaining characters in the string operand containing it, +any remaining string operands, and any additional characters in +the format operand. +.It Cm \e0 Ns Ar num +Write an 8\-bit character whose +.Tn ASCII +value is the 1\-, 2\-, or 3\-digit +octal number +.Ar num . +.El +.It Cm c +The first character of +.Ar argument +is printed. +.It Cm s +Characters from the string +.Ar argument +are printed until the end is reached or until the number of bytes +indicated by the precision specification is reached; if the +precision is omitted, all characters in the string are printed. +.It Cm \&% +Print a `%'; no argument is used. +.El +.Pp +In no case does a non-existent or small field width cause truncation of +a field; padding takes place only if the specified field width exceeds +the actual width. +.It Xo set +.Oo { +.Fl options | Cm +options | Cm -- } +.Oc Ar arg ... +.Xc +The +.Ic set +command performs three different functions. +.Pp +With no arguments, it lists the values of all shell variables. +.Pp +If options are given, it sets the specified option +flags, or clears them as described in the section called +.Sx Argument List Processing . +As a special case, if the option is -o or +o and no argument is +supplied, the shell prints the settings of all its options. If the +option is -o, the settings are printed in a human-readable format; if +the option is +o, the settings are printed in a format suitable for +reinput to the shell to affect the same option settings. +.Pp +The third use of the set command is to set the values of the shell's +positional parameters to the specified args. +To change the positional +parameters without changing any options, use +.Dq -- +as the first argument to set. +If no args are present, the set command +will clear all the positional parameters (equivalent to executing +.Dq shift $# . ) +.It shift Op Ar n +Shift the positional parameters n times. +A +.Ic shift +sets the value of +.Va $1 +to the value of +.Va $2 , +the value of +.Va $2 +to the value of +.Va $3 , +and so on, decreasing +the value of +.Va $# +by one. +If n is greater than the number of positional parameters, +.Ic shift +will issue an error message, and exit with return status 2. +.It test Ar expression +.It \&[ Ar expression Cm ] +The +.Ic test +utility evaluates the expression and, if it evaluates +to true, returns a zero (true) exit status; otherwise +it returns 1 (false). +If there is no expression, test also +returns 1 (false). +.Pp +All operators and flags are separate arguments to the +.Ic test +utility. +.Pp +The following primaries are used to construct expression: +.Bl -tag -width Ar +.It Fl b Ar file +True if +.Ar file +exists and is a block special +file. +.It Fl c Ar file +True if +.Ar file +exists and is a character +special file. +.It Fl d Ar file +True if +.Ar file +exists and is a directory. +.It Fl e Ar file +True if +.Ar file +exists (regardless of type). +.It Fl f Ar file +True if +.Ar file +exists and is a regular file. +.It Fl g Ar file +True if +.Ar file +exists and its set group ID flag +is set. +.It Fl h Ar file +True if +.Ar file +exists and is a symbolic link. +.It Fl k Ar file +True if +.Ar file +exists and its sticky bit is set. +.It Fl n Ar string +True if the length of +.Ar string +is nonzero. +.It Fl p Ar file +True if +.Ar file +is a named pipe +.Po Tn FIFO Pc . +.It Fl r Ar file +True if +.Ar file +exists and is readable. +.It Fl s Ar file +True if +.Ar file +exists and has a size greater +than zero. +.It Fl t Ar file_descriptor +True if the file whose file descriptor number +is +.Ar file_descriptor +is open and is associated with a terminal. +.It Fl u Ar file +True if +.Ar file +exists and its set user ID flag +is set. +.It Fl w Ar file +True if +.Ar file +exists and is writable. +True +indicates only that the write flag is on. +The file is not writable on a read-only file +system even if this test indicates true. +.It Fl x Ar file +True if +.Ar file +exists and is executable. +True +indicates only that the execute flag is on. +If +.Ar file +is a directory, true indicates that +.Ar file +can be searched. +.It Fl z Ar string +True if the length of +.Ar string +is zero. +.It Fl L Ar file +True if +.Ar file +exists and is a symbolic link. +This operator is retained for compatibility with previous versions of +this program. +Do not rely on its existence; use +.Fl h +instead. +.It Fl O Ar file +True if +.Ar file +exists and its owner matches the effective user id of this process. +.It Fl G Ar file +True if +.Ar file +exists and its group matches the effective group id of this process. +.It Fl S Ar file +True if +.Ar file +exists and is a socket. +.It Ar file1 Fl nt Ar file2 +True if +.Ar file1 +and +.Ar file2 +exist and +.Ar file1 +is newer than +.Ar file2 . +.It Ar file1 Fl ot Ar file2 +True if +.Ar file1 +and +.Ar file2 +exist and +.Ar file1 +is older than +.Ar file2 . +.It Ar file1 Fl ef Ar file2 +True if +.Ar file1 +and +.Ar file2 +exist and refer to the same file. +.It Ar string +True if +.Ar string +is not the null +string. +.It Ar \&s\&1 Cm \&= Ar \&s\&2 +True if the strings +.Ar \&s\&1 +and +.Ar \&s\&2 +are identical. +.It Ar \&s\&1 Cm \&!= Ar \&s\&2 +True if the strings +.Ar \&s\&1 +and +.Ar \&s\&2 +are not identical. +.It Ar \&s\&1 Cm \&\*[Lt] Ar \&s\&2 +True if string +.Ar \&s\&1 +comes before +.Ar \&s\&2 +based on the ASCII value of their characters. +.It Ar \&s\&1 Cm \&\*[Gt] Ar \&s\&2 +True if string +.Ar \&s\&1 +comes after +.Ar \&s\&2 +based on the ASCII value of their characters. +.It Ar \&n\&1 Fl \&eq Ar \&n\&2 +True if the integers +.Ar \&n\&1 +and +.Ar \&n\&2 +are algebraically +equal. +.It Ar \&n\&1 Fl \&ne Ar \&n\&2 +True if the integers +.Ar \&n\&1 +and +.Ar \&n\&2 +are not +algebraically equal. +.It Ar \&n\&1 Fl \> Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically +greater than the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \&ge Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically +greater than or equal to the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \< Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically less +than the integer +.Ar \&n\&2 . +.It Ar \&n\&1 Fl \&le Ar \&n\&2 +True if the integer +.Ar \&n\&1 +is algebraically less +than or equal to the integer +.Ar \&n\&2 . +.El +.Pp +These primaries can be combined with the following operators: +.Bl -tag -width Ar +.It Cm \&! Ar expression +True if +.Ar expression +is false. +.It Ar expression1 Fl a Ar expression2 +True if both +.Ar expression1 +and +.Ar expression2 +are true. +.It Ar expression1 Fl o Ar expression2 +True if either +.Ar expression1 +or +.Ar expression2 +are true. +.It Cm \&( Ns Ar expression Ns Cm \&) +True if expression is true. +.El +.Pp +The +.Fl a +operator has higher precedence than the +.Fl o +operator. +.It times +Print the accumulated user and system times for the shell and for processes +run from the shell. The return status is 0. +.It Xo trap +.Op Ar action Ar signal ... +.Xc +Cause the shell to parse and execute action when any of the specified +signals are received. +The signals are specified by signal number or as the name of the signal. +If +.Ar signal +is +.Li 0 +or +.Li EXIT , +the action is executed when the shell exits. +.Ar action +may be empty +.Li ( "''" ) , +which causes the specified signals to be ignored. +With +.Ar action +omitted or set to `-' the specified signals are set to their default action. +When the shell forks off a subshell, it resets trapped (but not ignored) +signals to the default action. +The +.Ic trap +command has no effect on signals that were +ignored on entry to the shell. +.Ic trap +without any arguments cause it to write a list of signals and their +associated action to the standard output in a format that is suitable +as an input to the shell that achieves the same trapping results. +.Pp +Examples: +.Pp +.Dl trap +.Pp +List trapped signals and their corresponding action +.Pp +.Dl trap '' INT QUIT tstp 30 +.Pp +Ignore signals INT QUIT TSTP USR1 +.Pp +.Dl trap date INT +.Pp +Print date upon receiving signal INT +.It type Op Ar name ... +Interpret each name as a command and print the resolution of the command +search. +Possible resolutions are: +shell keyword, alias, shell builtin, +command, tracked alias and not found. +For aliases the alias expansion is +printed; for commands and tracked aliases the complete pathname of the +command is printed. +.It ulimit Xo +.Op Fl H \*(Ba Fl S +.Op Fl a \*(Ba Fl tfdscmlpn Op Ar value +.Xc +Inquire about or set the hard or soft limits on processes or set new +limits. +The choice between hard limit (which no process is allowed to +violate, and which may not be raised once it has been lowered) and soft +limit (which causes processes to be signaled but not necessarily killed, +and which may be raised) is made with these flags: +.Bl -tag -width Fl +.It Fl H +set or inquire about hard limits +.It Fl S +set or inquire about soft limits. +If neither +.Fl H +nor +.Fl S +is specified, the soft limit is displayed or both limits are set. +If both are specified, the last one wins. +.El +.Pp +The limit to be interrogated or set, then, is chosen by specifying +any one of these flags: +.Bl -tag -width Fl +.It Fl a +show all the current limits +.It Fl t +show or set the limit on CPU time (in seconds) +.It Fl f +show or set the limit on the largest file that can be created +(in 512-byte blocks) +.It Fl d +show or set the limit on the data segment size of a process (in kilobytes) +.It Fl s +show or set the limit on the stack size of a process (in kilobytes) +.It Fl c +show or set the limit on the largest core dump size that can be produced +(in 512-byte blocks) +.It Fl m +show or set the limit on the total physical memory that can be +in use by a process (in kilobytes) +.It Fl l +show or set the limit on how much memory a process can lock with +.Xr mlock 2 +(in kilobytes) +.It Fl p +show or set the limit on the number of processes this user can +have at one time +.It Fl n +show or set the limit on the number files a process can have open at once +.It Fl r +show or set the limit on the real-time scheduling priority of a process +.El +.Pp +If none of these is specified, it is the limit on file size that is shown +or set. +If value is specified, the limit is set to that number; otherwise +the current limit is displayed. +.Pp +Limits of an arbitrary process can be displayed or set using the +.Xr sysctl 8 +utility. +.Pp +.It umask Op Ar mask +Set the value of umask (see +.Xr umask 2 ) +to the specified octal value. +If the argument is omitted, the umask value is printed. +.It unalias Xo +.Op Fl a +.Op Ar name +.Xc +If +.Ar name +is specified, the shell removes that alias. +If +.Fl a +is specified, all aliases are removed. +.It unset Xo +.Op Fl fv +.Ar name ... +.Xc +The specified variables and functions are unset and unexported. +If +.Fl f +or +.Fl v +is specified, the corresponding function or variable is unset, respectively. +If a given name corresponds to both a variable and a function, and no +options are given, only the variable is unset. +.It wait Op Ar job +Wait for the specified job to complete and return the exit status of the +last process in the job. +If the argument is omitted, wait for all jobs to +complete and return an exit status of zero. +.El +.Ss Command Line Editing +When +.Nm +is being used interactively from a terminal, the current command +and the command history (see +.Ic fc +in +.Sx Builtins ) +can be edited using vi-mode command-line editing. +This mode uses commands, described below, +similar to a subset of those described in the vi man page. +The command +.Ql set -o vi +enables vi-mode editing and place sh into vi insert mode. +With vi-mode +enabled, sh can be switched between insert mode and command mode. +The editor is not described in full here, but will be in a later document. +It's similar to vi: typing +.Aq ESC +will throw you into command VI command mode. +Hitting +.Aq return +while in command mode will pass the line to the shell. +.Sh EXIT STATUS +Errors that are detected by the shell, such as a syntax error, will cause the +shell to exit with a non-zero exit status. +If the shell is not an +interactive shell, the execution of the shell file will be aborted. +Otherwise +the shell will return the exit status of the last command executed, or +if the exit builtin is used with a numeric argument, it will return the +argument. +.Sh ENVIRONMENT +.Bl -tag -width MAILCHECK +.It Ev HOME +Set automatically by +.Xr login 1 +from the user's login directory in the password file +.Pq Xr passwd 4 . +This environment variable also functions as the default argument for the +cd builtin. +.It Ev PATH +The default search path for executables. +See the above section +.Sx Path Search . +.It Ev CDPATH +The search path used with the cd builtin. +.It Ev MAIL +The name of a mail file, that will be checked for the arrival of new mail. +Overridden by +.Ev MAILPATH . +.It Ev MAILCHECK +The frequency in seconds that the shell checks for the arrival of mail +in the files specified by the +.Ev MAILPATH +or the +.Ev MAIL +file. +If set to 0, the check will occur at each prompt. +.It Ev MAILPATH +A colon +.Dq \&: +separated list of file names, for the shell to check for incoming mail. +This environment setting overrides the +.Ev MAIL +setting. +There is a maximum of 10 mailboxes that can be monitored at once. +.It Ev PS1 +The primary prompt string, which defaults to +.Dq $\ , +unless you are the superuser, in which case it defaults to +.Dq #\ . +.It Ev PS2 +The secondary prompt string, which defaults to +.Dq \*[Gt]\ . +.It Ev PS4 +Output before each line when execution trace (set -x) is enabled, +defaults to +.Dq +\ . +.It Ev IFS +Input Field Separators. +This is normally set to +.Aq space , +.Aq tab , +and +.Aq newline . +See the +.Sx White Space Splitting +section for more details. +.It Ev TERM +The default terminal setting for the shell. +This is inherited by +children of the shell, and is used in the history editing modes. +.It Ev HISTSIZE +The number of lines in the history buffer for the shell. +.It Ev PWD +The logical value of the current working directory. This is set by the +.Ic cd +command. +.It Ev OLDPWD +The previous logical value of the current working directory. This is set by +the +.Ic cd +command. +.It Ev PPID +The process ID of the parent process of the shell. +.El +.Sh FILES +.Bl -item -width HOMEprofilexxxx +.It +.Pa $HOME/.profile +.It +.Pa /etc/profile +.El +.Sh SEE ALSO +.Xr csh 1 , +.Xr echo 1 , +.Xr getopt 1 , +.Xr ksh 1 , +.Xr login 1 , +.Xr printf 1 , +.Xr test 1 , +.Xr getopt 3 , +.Xr passwd 5 , +.\" .Xr profile 4 , +.Xr environ 7 , +.Xr sysctl 8 +.Sh HISTORY +.Nm +is a POSIX-compliant implementation of /bin/sh that aims to be as small as +possible. +.Nm +is a direct descendant of the NetBSD version of ash (the Almquist SHell), +ported to Linux in early 1997. +It was renamed to +.Nm +in 2002. +.Sh BUGS +Setuid shell scripts should be avoided at all costs, as they are a +significant security risk. +.Pp +PS1, PS2, and PS4 should be subject to parameter expansion before +being displayed. diff --git a/shells/dash/files/src/dash.cat1 b/shells/dash/files/src/dash.cat1 new file mode 100644 index 0000000000000..06aa27e7465c4 --- /dev/null +++ b/shells/dash/files/src/dash.cat1 @@ -0,0 +1,1593 @@ +DASH(1) General Commands Manual DASH(1) + +NNAAMMEE + ddaasshh -- command interpreter (shell) + +SSYYNNOOPPSSIISS + ddaasshh [--aaCCeeffnnuuvvxxIIiimmqqVVEEbb] [++aaCCeeffnnuuvvxxIIiimmqqVVEEbb] [--oo _o_p_t_i_o_n___n_a_m_e] + [++oo _o_p_t_i_o_n___n_a_m_e] [_c_o_m_m_a_n_d___f_i_l_e [_a_r_g_u_m_e_n_t _._._.]] + ddaasshh --cc [--aaCCeeffnnuuvvxxIIiimmqqVVEEbb] [++aaCCeeffnnuuvvxxIIiimmqqVVEEbb] [--oo _o_p_t_i_o_n___n_a_m_e] + [++oo _o_p_t_i_o_n___n_a_m_e] _c_o_m_m_a_n_d___s_t_r_i_n_g [_c_o_m_m_a_n_d___n_a_m_e [_a_r_g_u_m_e_n_t _._._.]] + ddaasshh --ss [--aaCCeeffnnuuvvxxIIiimmqqVVEEbb] [++aaCCeeffnnuuvvxxIIiimmqqVVEEbb] [--oo _o_p_t_i_o_n___n_a_m_e] + [++oo _o_p_t_i_o_n___n_a_m_e] [_a_r_g_u_m_e_n_t _._._.] + +DDEESSCCRRIIPPTTIIOONN + ddaasshh is the standard command interpreter for the system. The current + version of ddaasshh is in the process of being changed to conform with the + POSIX 1003.2 and 1003.2a specifications for the shell. This version has + many features which make it appear similar in some respects to the Korn + shell, but it is not a Korn shell clone (see ksh(1)). Only features + designated by POSIX, plus a few Berkeley extensions, are being + incorporated into this shell. This man page is not intended to be a + tutorial or a complete specification of the shell. + + OOvveerrvviieeww + The shell is a command that reads lines from either a file or the + terminal, interprets them, and generally executes other commands. It is + the program that is running when a user logs into the system (although a + user can select a different shell with the chsh(1) command). The shell + implements a language that has flow control constructs, a macro facility + that provides a variety of features in addition to data storage, along + with built in history and line editing capabilities. It incorporates + many features to aid interactive use and has the advantage that the + interpretative language is common to both interactive and non-interactive + use (shell scripts). That is, commands can be typed directly to the + running shell or can be put into a file and the file can be executed + directly by the shell. + + IInnvvooccaattiioonn + If no args are present and if the standard input of the shell is + connected to a terminal (or if the --ii flag is set), and the --cc option is + not present, the shell is considered an interactive shell. An + interactive shell generally prompts before each command and handles + programming and command errors differently (as described below). When + first starting, the shell inspects argument 0, and if it begins with a + dash `-', the shell is also considered a login shell. This is normally + done automatically by the system when the user first logs in. A login + shell first reads commands from the files _/_e_t_c_/_p_r_o_f_i_l_e and _._p_r_o_f_i_l_e if + they exist. If the environment variable ENV is set on entry to an + interactive shell, or is set in the _._p_r_o_f_i_l_e of a login shell, the shell + next reads commands from the file named in ENV. Therefore, a user should + place commands that are to be executed only at login time in the _._p_r_o_f_i_l_e + file, and commands that are executed for every interactive shell inside + the ENV file. To set the ENV variable to some file, place the following + line in your _._p_r_o_f_i_l_e of your home directory + + ENV=$HOME/.shinit; export ENV + + substituting for ``.shinit'' any filename you wish. + + If command line arguments besides the options have been specified, then + the shell treats the first argument as the name of a file from which to + read commands (a shell script), and the remaining arguments are set as + the positional parameters of the shell ($1, $2, etc). Otherwise, the + shell reads commands from its standard input. + + AArrgguummeenntt LLiisstt PPrroocceessssiinngg + All of the single letter options that have a corresponding name can be + used as an argument to the --oo option. The set --oo name is provided next + to the single letter option in the description below. Specifying a dash + ``-'' turns the option on, while using a plus ``+'' disables the option. + The following options can be set from the command line or with the sseett + builtin (described later). + + --aa _a_l_l_e_x_p_o_r_t Export all variables assigned to. + + --cc Read commands from the _c_o_m_m_a_n_d___s_t_r_i_n_g operand + instead of from the standard input. Special + parameter 0 will be set from the _c_o_m_m_a_n_d___n_a_m_e + operand and the positional parameters ($1, $2, + etc.) set from the remaining argument operands. + + --CC _n_o_c_l_o_b_b_e_r Don't overwrite existing files with ``>''. + + --ee _e_r_r_e_x_i_t If not interactive, exit immediately if any + untested command fails. The exit status of a + command is considered to be explicitly tested if + the command is used to control an iiff, eelliiff, wwhhiillee, + or uunnttiill; or if the command is the left hand + operand of an ``&&'' or ``||'' operator. + + --ff _n_o_g_l_o_b Disable pathname expansion. + + --nn _n_o_e_x_e_c If not interactive, read commands but do not + execute them. This is useful for checking the + syntax of shell scripts. + + --uu _n_o_u_n_s_e_t Write a message to standard error when attempting + to expand a variable that is not set, and if the + shell is not interactive, exit immediately. + + --vv _v_e_r_b_o_s_e The shell writes its input to standard error as it + is read. Useful for debugging. + + --xx _x_t_r_a_c_e Write each command to standard error (preceded by + a `+ ') before it is executed. Useful for + debugging. + + --II _i_g_n_o_r_e_e_o_f Ignore EOF's from input when interactive. + + --ii _i_n_t_e_r_a_c_t_i_v_e Force the shell to behave interactively. + + --ll Make dash act as if it had been invoked as a login + shell. + + --mm _m_o_n_i_t_o_r Turn on job control (set automatically when + interactive). + + --ss _s_t_d_i_n Read commands from standard input (set + automatically if no file arguments are present). + This option has no effect when set after the shell + has already started running (i.e. with sseett). + + --VV _v_i Enable the built-in vi(1) command line editor + (disables --EE if it has been set). + + --EE _e_m_a_c_s Enable the built-in emacs(1) command line editor + (disables --VV if it has been set). + + --bb _n_o_t_i_f_y Enable asynchronous notification of background job + completion. (UNIMPLEMENTED for 4.4alpha) + + LLeexxiiccaall SSttrruuccttuurree + The shell reads input in terms of lines from a file and breaks it up into + words at whitespace (blanks and tabs), and at certain sequences of + characters that are special to the shell called ``operators''. There are + two types of operators: control operators and redirection operators + (their meaning is discussed later). Following is a list of operators: + + Control operators: + & && ( ) ; ;; | || + + Redirection operators: + < > >| << >> <& >& <<- <> + + QQuuoottiinngg + Quoting is used to remove the special meaning of certain characters or + words to the shell, such as operators, whitespace, or keywords. There + are three types of quoting: matched single quotes, matched double quotes, + and backslash. + + BBaacckkssllaasshh + A backslash preserves the literal meaning of the following character, + with the exception of . A backslash preceding a is + treated as a line continuation. + + SSiinnggllee QQuuootteess + Enclosing characters in single quotes preserves the literal meaning of + all the characters (except single quotes, making it impossible to put + single-quotes in a single-quoted string). + + DDoouubbllee QQuuootteess + Enclosing characters within double quotes preserves the literal meaning + of all characters except dollarsign ($), backquote (`), and backslash + (\). The backslash inside double quotes is historically weird, and + serves to quote only the following characters: + $ ` " \ . + Otherwise it remains literal. + + RReesseerrvveedd WWoorrddss + Reserved words are words that have special meaning to the shell and are + recognized at the beginning of a line and after a control operator. The + following are reserved words: + + ! elif fi while case + else for then { } + do done until if esac + + Their meaning is discussed later. + + AAlliiaasseess + An alias is a name and corresponding value set using the alias(1) builtin + command. Whenever a reserved word may occur (see above), and after + checking for reserved words, the shell checks the word to see if it + matches an alias. If it does, it replaces it in the input stream with + its value. For example, if there is an alias called ``lf'' with the + value ``ls -F'', then the input: + + lf foobar + + would become + + ls -F foobar + + Aliases provide a convenient way for naive users to create shorthands for + commands without having to learn how to create functions with arguments. + They can also be used to create lexically obscure code. This use is + discouraged. + + CCoommmmaannddss + The shell interprets the words it reads according to a language, the + specification of which is outside the scope of this man page (refer to + the BNF in the POSIX 1003.2 document). Essentially though, a line is + read and if the first word of the line (or after a control operator) is + not a reserved word, then the shell has recognized a simple command. + Otherwise, a complex command or some other special construct may have + been recognized. + + SSiimmppllee CCoommmmaannddss + If a simple command has been recognized, the shell performs the following + actions: + + 1. Leading words of the form ``name=value'' are stripped off and + assigned to the environment of the simple command. + Redirection operators and their arguments (as described below) + are stripped off and saved for processing. + + 2. The remaining words are expanded as described in the section + called ``Expansions'', and the first remaining word is + considered the command name and the command is located. The + remaining words are considered the arguments of the command. + If no command name resulted, then the ``name=value'' variable + assignments recognized in item 1 affect the current shell. + + 3. Redirections are performed as described in the next section. + + RReeddiirreeccttiioonnss + Redirections are used to change where a command reads its input or sends + its output. In general, redirections open, close, or duplicate an + existing reference to a file. The overall format used for redirection + is: + + [n] _r_e_d_i_r_-_o_p _f_i_l_e + + where _r_e_d_i_r_-_o_p is one of the redirection operators mentioned previously. + Following is a list of the possible redirections. The [n] is an optional + number, as in `3' (not `[3]'), that refers to a file descriptor. + + [n]> file Redirect standard output (or n) to file. + + [n]>| file Same, but override the --CC option. + + [n]>> file Append standard output (or n) to file. + + [n]< file Redirect standard input (or n) from file. + + [n1]<&n2 Duplicate standard input (or n1) from file descriptor + n2. + + [n]<&- Close standard input (or n). + + [n1]>&n2 Duplicate standard output (or n1) to n2. + + [n]>&- Close standard output (or n). + + [n]<> file Open file for reading and writing on standard input (or + n). + + The following redirection is often called a ``here-document''. + + [n]<< delimiter + here-doc-text ... + delimiter + + All the text on successive lines up to the delimiter is saved away and + made available to the command on standard input, or file descriptor n if + it is specified. If the delimiter as specified on the initial line is + quoted, then the here-doc-text is treated literally, otherwise the text + is subjected to parameter expansion, command substitution, and arithmetic + expansion (as described in the section on ``Expansions''). If the + operator is ``<<-'' instead of ``<<'', then leading tabs in the here-doc- + text are stripped. + + SSeeaarrcchh aanndd EExxeeccuuttiioonn + There are three types of commands: shell functions, builtin commands, and + normal programs -- and the command is searched for (by name) in that + order. They each are executed in a different way. + + When a shell function is executed, all of the shell positional parameters + (except $0, which remains unchanged) are set to the arguments of the + shell function. The variables which are explicitly placed in the + environment of the command (by placing assignments to them before the + function name) are made local to the function and are set to the values + given. Then the command given in the function definition is executed. + The positional parameters are restored to their original values when the + command completes. This all occurs within the current shell. + + Shell builtins are executed internally to the shell, without spawning a + new process. + + Otherwise, if the command name doesn't match a function or builtin, the + command is searched for as a normal program in the file system (as + described in the next section). When a normal program is executed, the + shell runs the program, passing the arguments and the environment to the + program. If the program is not a normal executable file (i.e., if it + does not begin with the "magic number" whose ASCII representation is + "#!", so execve(2) returns ENOEXEC then) the shell will interpret the + program in a subshell. The child shell will reinitialize itself in this + case, so that the effect will be as if a new shell had been invoked to + handle the ad-hoc shell script, except that the location of hashed + commands located in the parent shell will be remembered by the child. + + Note that previous versions of this document and the source code itself + misleadingly and sporadically refer to a shell script without a magic + number as a "shell procedure". + + PPaatthh SSeeaarrcchh + When locating a command, the shell first looks to see if it has a shell + function by that name. Then it looks for a builtin command by that name. + If a builtin command is not found, one of two things happen: + + 1. Command names containing a slash are simply executed without + performing any searches. + + 2. The shell searches each entry in PATH in turn for the command. The + value of the PATH variable should be a series of entries separated + by colons. Each entry consists of a directory name. The current + directory may be indicated implicitly by an empty directory name, or + explicitly by a single period. + + CCoommmmaanndd EExxiitt SSttaattuuss + Each command has an exit status that can influence the behaviour of other + shell commands. The paradigm is that a command exits with zero for + normal or success, and non-zero for failure, error, or a false + indication. The man page for each command should indicate the various + exit codes and what they mean. Additionally, the builtin commands return + exit codes, as does an executed shell function. + + If a command consists entirely of variable assignments then the exit + status of the command is that of the last command substitution if any, + otherwise 0. + + CCoommpplleexx CCoommmmaannddss + Complex commands are combinations of simple commands with control + operators or reserved words, together creating a larger complex command. + More generally, a command is one of the following: + + oo simple command + + oo pipeline + + oo list or compound-list + + oo compound command + + oo function definition + + Unless otherwise stated, the exit status of a command is that of the last + simple command executed by the command. + + PPiippeelliinneess + A pipeline is a sequence of one or more commands separated by the control + operator |. The standard output of all but the last command is connected + to the standard input of the next command. The standard output of the + last command is inherited from the shell, as usual. + + The format for a pipeline is: + + [!] command1 [| command2 ...] + + The standard output of command1 is connected to the standard input of + command2. The standard input, standard output, or both of a command is + considered to be assigned by the pipeline before any redirection + specified by redirection operators that are part of the command. + + If the pipeline is not in the background (discussed later), the shell + waits for all commands to complete. + + If the reserved word ! does not precede the pipeline, the exit status is + the exit status of the last command specified in the pipeline. + Otherwise, the exit status is the logical NOT of the exit status of the + last command. That is, if the last command returns zero, the exit status + is 1; if the last command returns greater than zero, the exit status is + zero. + + Because pipeline assignment of standard input or standard output or both + takes place before redirection, it can be modified by redirection. For + example: + + $ command1 2>&1 | command2 + + sends both the standard output and standard error of command1 to the + standard input of command2. + + A ; or terminator causes the preceding AND-OR-list (described + next) to be executed sequentially; a & causes asynchronous execution of + the preceding AND-OR-list. + + Note that unlike some other shells, each process in the pipeline is a + child of the invoking shell (unless it is a shell builtin, in which case + it executes in the current shell -- but any effect it has on the + environment is wiped). + + BBaacckkggrroouunndd CCoommmmaannddss ---- && + If a command is terminated by the control operator ampersand (&), the + shell executes the command asynchronously -- that is, the shell does not + wait for the command to finish before executing the next command. + + The format for running a command in background is: + + command1 & [command2 & ...] + + If the shell is not interactive, the standard input of an asynchronous + command is set to _/_d_e_v_/_n_u_l_l. + + LLiissttss ---- GGeenneerraallllyy SSppeeaakkiinngg + A list is a sequence of zero or more commands separated by newlines, + semicolons, or ampersands, and optionally terminated by one of these + three characters. The commands in a list are executed in the order they + are written. If command is followed by an ampersand, the shell starts + the command and immediately proceed onto the next command; otherwise it + waits for the command to terminate before proceeding to the next one. + + SShhoorrtt--CCiirrccuuiitt LLiisstt OOppeerraattoorrss + ``&&'' and ``||'' are AND-OR list operators. ``&&'' executes the first + command, and then executes the second command iff the exit status of the + first command is zero. ``||'' is similar, but executes the second + command iff the exit status of the first command is nonzero. ``&&'' and + ``||'' both have the same priority. + + FFllooww--CCoonnttrrooll CCoonnssttrruuccttss ---- iiff,, wwhhiillee,, ffoorr,, ccaassee + The syntax of the if command is + + if list + then list + [ elif list + then list ] ... + [ else list ] + fi + + The syntax of the while command is + + while list + do list + done + + The two lists are executed repeatedly while the exit status of the first + list is zero. The until command is similar, but has the word until in + place of while, which causes it to repeat until the exit status of the + first list is zero. + + The syntax of the for command is + + for variable [ in [ word ... ] ] + do list + done + + The words following _i_n are expanded, and then the list is executed + repeatedly with the variable set to each word in turn. Omitting in word + ... is equivalent to in "$@". + + The syntax of the break and continue command is + + break [ num ] + continue [ num ] + + Break terminates the num innermost for or while loops. Continue + continues with the next iteration of the innermost loop. These are + implemented as builtin commands. + + The syntax of the case command is + + case word in + [(]pattern) list ;; + ... + esac + + The pattern can actually be one or more patterns (see _S_h_e_l_l _P_a_t_t_e_r_n_s + described later), separated by ``|'' characters. The ``('' character + before the pattern is optional. + + GGrroouuppiinngg CCoommmmaannddss TTooggeetthheerr + Commands may be grouped by writing either + + (list) + + or + + { list; } + + The first of these executes the commands in a subshell. Builtin commands + grouped into a (list) will not affect the current shell. The second form + does not fork another shell so is slightly more efficient. Grouping + commands together this way allows you to redirect their output as though + they were one program: + + { printf " hello " ; printf " world\n" ; } > greeting + + Note that ``}'' must follow a control operator (here, ``;'') so that it + is recognized as a reserved word and not as another command argument. + + FFuunnccttiioonnss + The syntax of a function definition is + + name () command + + A function definition is an executable statement; when executed it + installs a function named name and returns an exit status of zero. The + command is normally a list enclosed between ``{'' and ``}''. + + Variables may be declared to be local to a function by using a local + command. This should appear as the first statement of a function, and + the syntax is + + local [variable | -] ... + + Local is implemented as a builtin command. + + When a variable is made local, it inherits the initial value and exported + and readonly flags from the variable with the same name in the + surrounding scope, if there is one. Otherwise, the variable is initially + unset. The shell uses dynamic scoping, so that if you make the variable + x local to function f, which then calls function g, references to the + variable x made inside g will refer to the variable x declared inside f, + not to the global variable named x. + + The only special parameter that can be made local is ``-''. Making ``-'' + local any shell options that are changed via the set command inside the + function to be restored to their original values when the function + returns. + + The syntax of the return command is + + return [exitstatus] + + It terminates the currently executing function. Return is implemented as + a builtin command. + + VVaarriiaabblleess aanndd PPaarraammeetteerrss + The shell maintains a set of parameters. A parameter denoted by a name + is called a variable. When starting up, the shell turns all the + environment variables into shell variables. New variables can be set + using the form + + name=value + + Variables set by the user must have a name consisting solely of + alphabetics, numerics, and underscores - the first of which must not be + numeric. A parameter can also be denoted by a number or a special + character as explained below. + + PPoossiittiioonnaall PPaarraammeetteerrss + A positional parameter is a parameter denoted by a number (n > 0). The + shell sets these initially to the values of its command line arguments + that follow the name of the shell script. The sseett builtin can also be + used to set or reset them. + + SSppeecciiaall PPaarraammeetteerrss + A special parameter is a parameter denoted by one of the following + special characters. The value of the parameter is listed next to its + character. + + * Expands to the positional parameters, starting from one. + When the expansion occurs within a double-quoted string it + expands to a single field with the value of each parameter + separated by the first character of the IFS variable, or by + a if IFS is unset. + + @ Expands to the positional parameters, starting from one. + When the expansion occurs within double-quotes, each + positional parameter expands as a separate argument. If + there are no positional parameters, the expansion of @ + generates zero arguments, even when @ is double-quoted. + What this basically means, for example, is if $1 is ``abc'' + and $2 is ``def ghi'', then "$@" expands to the two + arguments: + + "abc" "def ghi" + + # Expands to the number of positional parameters. + + ? Expands to the exit status of the most recent pipeline. + + - (Hyphen.) Expands to the current option flags (the single-letter + option names concatenated into a string) as specified on + invocation, by the set builtin command, or implicitly by the + shell. + + $ Expands to the process ID of the invoked shell. A subshell + retains the same value of $ as its parent. + + ! Expands to the process ID of the most recent background + command executed from the current shell. For a pipeline, + the process ID is that of the last command in the pipeline. + + 0 (Zero.) Expands to the name of the shell or shell script. + + WWoorrdd EExxppaannssiioonnss + This clause describes the various expansions that are performed on words. + Not all expansions are performed on every word, as explained later. + + Tilde expansions, parameter expansions, command substitutions, arithmetic + expansions, and quote removals that occur within a single word expand to + a single field. It is only field splitting or pathname expansion that + can create multiple fields from a single word. The single exception to + this rule is the expansion of the special parameter @ within double- + quotes, as was described above. + + The order of word expansion is: + + 1. Tilde Expansion, Parameter Expansion, Command Substitution, + Arithmetic Expansion (these all occur at the same time). + + 2. Field Splitting is performed on fields generated by step (1) unless + the IFS variable is null. + + 3. Pathname Expansion (unless set --ff is in effect). + + 4. Quote Removal. + + The $ character is used to introduce parameter expansion, command + substitution, or arithmetic evaluation. + + TTiillddee EExxppaannssiioonn ((ssuubbssttiittuuttiinngg aa uusseerr''ss hhoommee ddiirreeccttoorryy)) + A word beginning with an unquoted tilde character (~) is subjected to + tilde expansion. All the characters up to a slash (/) or the end of the + word are treated as a username and are replaced with the user's home + directory. If the username is missing (as in _~_/_f_o_o_b_a_r), the tilde is + replaced with the value of the _H_O_M_E variable (the current user's home + directory). + + PPaarraammeetteerr EExxppaannssiioonn + The format for parameter expansion is as follows: + + ${expression} + + where expression consists of all characters until the matching ``}''. + Any ``}'' escaped by a backslash or within a quoted string, and + characters in embedded arithmetic expansions, command substitutions, and + variable expansions, are not examined in determining the matching ``}''. + + The simplest form for parameter expansion is: + + ${parameter} + + The value, if any, of parameter is substituted. + + The parameter name or symbol can be enclosed in braces, which are + optional except for positional parameters with more than one digit or + when parameter is followed by a character that could be interpreted as + part of the name. If a parameter expansion occurs inside double-quotes: + + 1. Pathname expansion is not performed on the results of the expansion. + + 2. Field splitting is not performed on the results of the expansion, + with the exception of @. + + In addition, a parameter expansion can be modified by using one of the + following formats. + + ${parameter:-word} Use Default Values. If parameter is unset or null, + the expansion of word is substituted; otherwise, + the value of parameter is substituted. + + ${parameter:=word} Assign Default Values. If parameter is unset or + null, the expansion of word is assigned to + parameter. In all cases, the final value of + parameter is substituted. Only variables, not + positional parameters or special parameters, can be + assigned in this way. + + ${parameter:?[word]} Indicate Error if Null or Unset. If parameter is + unset or null, the expansion of word (or a message + indicating it is unset if word is omitted) is + written to standard error and the shell exits with + a nonzero exit status. Otherwise, the value of + parameter is substituted. An interactive shell + need not exit. + + ${parameter:+word} Use Alternative Value. If parameter is unset or + null, null is substituted; otherwise, the expansion + of word is substituted. + + In the parameter expansions shown previously, use of the colon in the + format results in a test for a parameter that is unset or null; omission + of the colon results in a test for a parameter that is only unset. + + ${#parameter} String Length. The length in characters of the + value of parameter. + + The following four varieties of parameter expansion provide for substring + processing. In each case, pattern matching notation (see _S_h_e_l_l + _P_a_t_t_e_r_n_s), rather than regular expression notation, is used to evaluate + the patterns. If parameter is * or @, the result of the expansion is + unspecified. Enclosing the full parameter expansion string in double- + quotes does not cause the following four varieties of pattern characters + to be quoted, whereas quoting characters within the braces has this + effect. + + ${parameter%word} Remove Smallest Suffix Pattern. The word is + expanded to produce a pattern. The parameter + expansion then results in parameter, with the + smallest portion of the suffix matched by the + pattern deleted. + + ${parameter%%word} Remove Largest Suffix Pattern. The word is + expanded to produce a pattern. The parameter + expansion then results in parameter, with the + largest portion of the suffix matched by the + pattern deleted. + + ${parameter#word} Remove Smallest Prefix Pattern. The word is + expanded to produce a pattern. The parameter + expansion then results in parameter, with the + smallest portion of the prefix matched by the + pattern deleted. + + ${parameter##word} Remove Largest Prefix Pattern. The word is + expanded to produce a pattern. The parameter + expansion then results in parameter, with the + largest portion of the prefix matched by the + pattern deleted. + + CCoommmmaanndd SSuubbssttiittuuttiioonn + Command substitution allows the output of a command to be substituted in + place of the command name itself. Command substitution occurs when the + command is enclosed as follows: + + $(command) + + or (``backquoted'' version): + + `command` + + The shell expands the command substitution by executing command in a + subshell environment and replacing the command substitution with the + standard output of the command, removing sequences of one or more + s at the end of the substitution. (Embedded s before + the end of the output are not removed; however, during field splitting, + they may be translated into s, depending on the value of IFS and + quoting that is in effect.) + + AArriitthhmmeettiicc EExxppaannssiioonn + Arithmetic expansion provides a mechanism for evaluating an arithmetic + expression and substituting its value. The format for arithmetic + expansion is as follows: + + $((expression)) + + The expression is treated as if it were in double-quotes, except that a + double-quote inside the expression is not treated specially. The shell + expands all tokens in the expression for parameter expansion, command + substitution, and quote removal. + + Next, the shell treats this as an arithmetic expression and substitutes + the value of the expression. + + WWhhiittee SSppaaccee SSpplliittttiinngg ((FFiieelldd SSpplliittttiinngg)) + After parameter expansion, command substitution, and arithmetic expansion + the shell scans the results of expansions and substitutions that did not + occur in double-quotes for field splitting and multiple fields can + result. + + The shell treats each character of the IFS as a delimiter and uses the + delimiters to split the results of parameter expansion and command + substitution into fields. + + PPaatthhnnaammee EExxppaannssiioonn ((FFiillee NNaammee GGeenneerraattiioonn)) + Unless the --ff flag is set, file name generation is performed after word + splitting is complete. Each word is viewed as a series of patterns, + separated by slashes. The process of expansion replaces the word with + the names of all existing files whose names can be formed by replacing + each pattern with a string that matches the specified pattern. There are + two restrictions on this: first, a pattern cannot match a string + containing a slash, and second, a pattern cannot match a string starting + with a period unless the first character of the pattern is a period. The + next section describes the patterns used for both Pathname Expansion and + the ccaassee command. + + SShheellll PPaatttteerrnnss + A pattern consists of normal characters, which match themselves, and + meta-characters. The meta-characters are ``!'', ``*'', ``?'', and ``[''. + These characters lose their special meanings if they are quoted. When + command or variable substitution is performed and the dollar sign or back + quotes are not double quoted, the value of the variable or the output of + the command is scanned for these characters and they are turned into + meta-characters. + + An asterisk (``*'') matches any string of characters. A question mark + matches any single character. A left bracket (``['') introduces a + character class. The end of the character class is indicated by a + (``]''); if the ``]'' is missing then the ``['' matches a ``['' rather + than introducing a character class. A character class matches any of the + characters between the square brackets. A range of characters may be + specified using a minus sign. The character class may be complemented by + making an exclamation point the first character of the character class. + + To include a ``]'' in a character class, make it the first character + listed (after the ``!'', if any). To include a minus sign, make it the + first or last character listed. + + BBuuiillttiinnss + This section lists the builtin commands which are builtin because they + need to perform some operation that can't be performed by a separate + process. In addition to these, there are several other commands that may + be builtin for efficiency (e.g. printf(1), echo(1), test(1), etc). + + : + + true A null command that returns a 0 (true) exit value. + + . file + The commands in the specified file are read and executed by the + shell. + + alias [_n_a_m_e[_=_s_t_r_i_n_g _._._.]] + If _n_a_m_e_=_s_t_r_i_n_g is specified, the shell defines the alias _n_a_m_e with + value _s_t_r_i_n_g. If just _n_a_m_e is specified, the value of the alias + _n_a_m_e is printed. With no arguments, the aalliiaass builtin prints the + names and values of all defined aliases (see uunnaalliiaass). + + bg [_j_o_b] _._._. + Continue the specified jobs (or the current job if no jobs are + given) in the background. + + command [--pp] [--vv] [--VV] _c_o_m_m_a_n_d [_a_r_g _._._.] + Execute the specified command but ignore shell functions when + searching for it. (This is useful when you have a shell function + with the same name as a builtin command.) + + --pp search for command using a PATH that guarantees to find all + the standard utilities. + + --VV Do not execute the command but search for the command and + print the resolution of the command search. This is the + same as the type builtin. + + --vv Do not execute the command but search for the command and + print the absolute pathname of utilities, the name for + builtins or the expansion of aliases. + + cd _- + + cd [--LLPP] [_d_i_r_e_c_t_o_r_y] + Switch to the specified directory (default HOME). If an entry for + CDPATH appears in the environment of the ccdd command or the shell + variable CDPATH is set and the directory name does not begin with + a slash, then the directories listed in CDPATH will be searched + for the specified directory. The format of CDPATH is the same as + that of PATH. If a single dash is specified as the argument, it + will be replaced by the value of OLDPWD. The ccdd command will + print out the name of the directory that it actually switched to + if this is different from the name that the user gave. These may + be different either because the CDPATH mechanism was used or + because the argument is a single dash. The --PP option causes the + physical directory structure to be used, that is, all symbolic + links are resolved to their respective values. The --LL option + turns off the effect of any preceding --PP options. + + echo [--nn] _a_r_g_s_._._. + Print the arguments on the standard output, separated by spaces. + Unless the --nn option is present, a newline is output following the + arguments. + + If any of the following sequences of characters is encountered + during output, the sequence is not output. Instead, the specified + action is performed: + + \b A backspace character is output. + + \c Subsequent output is suppressed. This is normally used at + the end of the last argument to suppress the trailing + newline that eecchhoo would otherwise output. + + \f Output a form feed. + + \n Output a newline character. + + \r Output a carriage return. + + \t Output a (horizontal) tab character. + + \v Output a vertical tab. + + \0_d_i_g_i_t_s + Output the character whose value is given by zero to three + octal digits. If there are zero digits, a nul character + is output. + + \\ Output a backslash. + + All other backslash sequences elicit undefined behaviour. + + eval _s_t_r_i_n_g _._._. + Concatenate all the arguments with spaces. Then re-parse and + execute the command. + + exec [_c_o_m_m_a_n_d _a_r_g _._._.] + Unless command is omitted, the shell process is replaced with the + specified program (which must be a real program, not a shell + builtin or function). Any redirections on the eexxeecc command are + marked as permanent, so that they are not undone when the eexxeecc + command finishes. + + exit [_e_x_i_t_s_t_a_t_u_s] + Terminate the shell process. If _e_x_i_t_s_t_a_t_u_s is given it is used as + the exit status of the shell; otherwise the exit status of the + preceding command is used. + + export _n_a_m_e _._._. + + export --pp + The specified names are exported so that they will appear in the + environment of subsequent commands. The only way to un-export a + variable is to unset it. The shell allows the value of a variable + to be set at the same time it is exported by writing + + export name=value + + With no arguments the export command lists the names of all + exported variables. With the --pp option specified the output will + be formatted suitably for non-interactive use. + + fc [--ee _e_d_i_t_o_r] [_f_i_r_s_t [_l_a_s_t]] + + fc --ll [--nnrr] [_f_i_r_s_t [_l_a_s_t]] + + fc --ss [_o_l_d_=_n_e_w] [_f_i_r_s_t] + The ffcc builtin lists, or edits and re-executes, commands + previously entered to an interactive shell. + + --ee editor + Use the editor named by editor to edit the commands. The + editor string is a command name, subject to search via the + PATH variable. The value in the FCEDIT variable is used as + a default when --ee is not specified. If FCEDIT is null or + unset, the value of the EDITOR variable is used. If EDITOR + is null or unset, ed(1) is used as the editor. + + --ll (ell) + List the commands rather than invoking an editor on them. + The commands are written in the sequence indicated by the + first and last operands, as affected by --rr, with each + command preceded by the command number. + + --nn Suppress command numbers when listing with -l. + + --rr Reverse the order of the commands listed (with --ll) or + edited (with neither --ll nor --ss). + + --ss Re-execute the command without invoking an editor. + + first + + last Select the commands to list or edit. The number of + previous commands that can be accessed are determined by + the value of the HISTSIZE variable. The value of first or + last or both are one of the following: + + [+]number + A positive number representing a command number; + command numbers can be displayed with the --ll option. + + --nnuummbbeerr + A negative decimal number representing the command + that was executed number of commands previously. + For example, -1 is the immediately previous command. + + string + A string indicating the most recently entered command that + begins with that string. If the old=new operand is not + also specified with --ss, the string form of the first + operand cannot contain an embedded equal sign. + + The following environment variables affect the execution of fc: + + FCEDIT Name of the editor to use. + + HISTSIZE The number of previous commands that are accessible. + + fg [_j_o_b] + Move the specified job or the current job to the foreground. + + getopts _o_p_t_s_t_r_i_n_g _v_a_r + The POSIX ggeettooppttss command, not to be confused with the _B_e_l_l _L_a_b_s + -derived getopt(1). + + The first argument should be a series of letters, each of which + may be optionally followed by a colon to indicate that the option + requires an argument. The variable specified is set to the parsed + option. + + The ggeettooppttss command deprecates the older getopt(1) utility due to + its handling of arguments containing whitespace. + + The ggeettooppttss builtin may be used to obtain options and their + arguments from a list of parameters. When invoked, ggeettooppttss places + the value of the next option from the option string in the list in + the shell variable specified by _v_a_r and its index in the shell + variable OPTIND. When the shell is invoked, OPTIND is initialized + to 1. For each option that requires an argument, the ggeettooppttss + builtin will place it in the shell variable OPTARG. If an option + is not allowed for in the _o_p_t_s_t_r_i_n_g, then OPTARG will be unset. + + _o_p_t_s_t_r_i_n_g is a string of recognized option letters (see + getopt(3)). If a letter is followed by a colon, the option is + expected to have an argument which may or may not be separated + from it by white space. If an option character is not found where + expected, ggeettooppttss will set the variable _v_a_r to a ``?''; ggeettooppttss + will then unset OPTARG and write output to standard error. By + specifying a colon as the first character of _o_p_t_s_t_r_i_n_g all errors + will be ignored. + + A nonzero value is returned when the last option is reached. If + there are no remaining arguments, ggeettooppttss will set _v_a_r to the + special option, ``--'', otherwise, it will set _v_a_r to ``?''. + + The following code fragment shows how one might process the + arguments for a command that can take the options [a] and [b], and + the option [c], which requires an argument. + + while getopts abc: f + do + case $f in + a | b) flag=$f;; + c) carg=$OPTARG;; + \?) echo $USAGE; exit 1;; + esac + done + shift `expr $OPTIND - 1` + + This code will accept any of the following as equivalent: + + cmd -acarg file file + cmd -a -c arg file file + cmd -carg -a file file + cmd -a -carg -- file file + + hash --rrvv _c_o_m_m_a_n_d _._._. + The shell maintains a hash table which remembers the locations of + commands. With no arguments whatsoever, the hhaasshh command prints + out the contents of this table. Entries which have not been + looked at since the last ccdd command are marked with an asterisk; + it is possible for these entries to be invalid. + + With arguments, the hhaasshh command removes the specified commands + from the hash table (unless they are functions) and then locates + them. With the --vv option, hash prints the locations of the + commands as it finds them. The --rr option causes the hash command + to delete all the entries in the hash table except for functions. + + pwd [--LLPP] + builtin command remembers what the current directory is rather + than recomputing it each time. This makes it faster. However, if + the current directory is renamed, the builtin version of ppwwdd will + continue to print the old name for the directory. The --PP option + causes the physical value of the current working directory to be + shown, that is, all symbolic links are resolved to their + respective values. The --LL option turns off the effect of any + preceding --PP options. + + read [--pp _p_r_o_m_p_t] [--rr] _v_a_r_i_a_b_l_e [_._._.] + The prompt is printed if the --pp option is specified and the + standard input is a terminal. Then a line is read from the + standard input. The trailing newline is deleted from the line and + the line is split as described in the section on word splitting + above, and the pieces are assigned to the variables in order. At + least one variable must be specified. If there are more pieces + than variables, the remaining pieces (along with the characters in + IFS that separated them) are assigned to the last variable. If + there are more variables than pieces, the remaining variables are + assigned the null string. The rreeaadd builtin will indicate success + unless EOF is encountered on input, in which case failure is + returned. + + By default, unless the --rr option is specified, the backslash ``\'' + acts as an escape character, causing the following character to be + treated literally. If a backslash is followed by a newline, the + backslash and the newline will be deleted. + + readonly _n_a_m_e _._._. + + readonly --pp + The specified names are marked as read only, so that they cannot + be subsequently modified or unset. The shell allows the value of + a variable to be set at the same time it is marked read only by + writing + + readonly name=value + + With no arguments the readonly command lists the names of all read + only variables. With the --pp option specified the output will be + formatted suitably for non-interactive use. + + printf _f_o_r_m_a_t [_a_r_g_u_m_e_n_t_s _._._.] + pprriinnttff formats and prints its arguments, after the first, under + control of the _f_o_r_m_a_t. The _f_o_r_m_a_t is a character string which + contains three types of objects: plain characters, which are + simply copied to standard output, character escape sequences which + are converted and copied to the standard output, and format + specifications, each of which causes printing of the next + successive _a_r_g_u_m_e_n_t. + + The _a_r_g_u_m_e_n_t_s after the first are treated as strings if the + corresponding format is either bb, cc or ss; otherwise it is + evaluated as a C constant, with the following extensions: + + oo A leading plus or minus sign is allowed. + oo If the leading character is a single or double quote, + the value is the ASCII code of the next character. + + The format string is reused as often as necessary to satisfy the + _a_r_g_u_m_e_n_t_s. Any extra format specifications are evaluated with + zero or the null string. + + Character escape sequences are in backslash notation as defined in + ANSI X3.159-1989 (``ANSI C89''). The characters and their + meanings are as follows: + + \\aa Write a character. + + \\bb Write a character. + + \\ff Write a character. + + \\nn Write a character. + + \\rr Write a character. + + \\tt Write a character. + + \\vv Write a character. + + \\\\ Write a backslash character. + + \\_n_u_m Write an 8-bit character whose ASCII value is the + 1-, 2-, or 3-digit octal number _n_u_m. + + Each format specification is introduced by the percent character + (``%''). The remainder of the format specification includes, in + the following order: + + Zero or more of the following flags: + + ## A `#' character specifying that the value should + be printed in an ``alternative form''. For bb, cc, + dd, and ss formats, this option has no effect. For + the oo format the precision of the number is + increased to force the first character of the + output string to a zero. For the xx (XX) format, a + non-zero result has the string 0x (0X) prepended + to it. For ee, EE, ff, gg, and GG formats, the result + will always contain a decimal point, even if no + digits follow the point (normally, a decimal point + only appears in the results of those formats if a + digit follows the decimal point). For gg and GG + formats, trailing zeros are not removed from the + result as they would otherwise be. + + -- A minus sign `-' which specifies _l_e_f_t _a_d_j_u_s_t_m_e_n_t + of the output in the indicated field; + + ++ A `+' character specifying that there should + always be a sign placed before the number when + using signed formats. + + ` ' A space specifying that a blank should be left + before a positive number for a signed format. A + `+' overrides a space if both are used; + + 00 A zero `0' character indicating that zero-padding + should be used rather than blank-padding. A `-' + overrides a `0' if both are used; + + Field Width: + An optional digit string specifying a _f_i_e_l_d _w_i_d_t_h; if the + output string has fewer characters than the field width it + will be blank-padded on the left (or right, if the left- + adjustment indicator has been given) to make up the field + width (note that a leading zero is a flag, but an embedded + zero is part of a field width); + + Precision: + An optional period, `..', followed by an optional digit + string giving a _p_r_e_c_i_s_i_o_n which specifies the number of + digits to appear after the decimal point, for ee and ff + formats, or the maximum number of characters to be printed + from a string (bb and ss formats); if the digit string is + missing, the precision is treated as zero; + + Format: + A character which indicates the type of format to use (one + of ddiioouuxxXXffwwEEggGGbbccss). + + A field width or precision may be `**' instead of a digit string. + In this case an _a_r_g_u_m_e_n_t supplies the field width or precision. + + The format characters and their meanings are: + + ddiioouuXXxx The _a_r_g_u_m_e_n_t is printed as a signed decimal (d or i), + unsigned octal, unsigned decimal, or unsigned + hexadecimal (X or x), respectively. + + ff The _a_r_g_u_m_e_n_t is printed in the style [-]ddd..ddd where + the number of d's after the decimal point is equal to + the precision specification for the argument. If the + precision is missing, 6 digits are given; if the + precision is explicitly 0, no digits and no decimal + point are printed. + + eeEE The _a_r_g_u_m_e_n_t is printed in the style [-]d..dddee*(Pmdd + where there is one digit before the decimal point and + the number after is equal to the precision + specification for the argument; when the precision is + missing, 6 digits are produced. An upper-case E is + used for an `E' format. + + ggGG The _a_r_g_u_m_e_n_t is printed in style ff or in style ee (EE) + whichever gives full precision in minimum space. + + bb Characters from the string _a_r_g_u_m_e_n_t are printed with + backslash-escape sequences expanded. + The following additional backslash-escape sequences + are supported: + + \\cc Causes ddaasshh to ignore any remaining characters + in the string operand containing it, any + remaining string operands, and any additional + characters in the format operand. + + \\00_n_u_m Write an 8-bit character whose ASCII value is + the 1-, 2-, or 3-digit octal number _n_u_m. + + cc The first character of _a_r_g_u_m_e_n_t is printed. + + ss Characters from the string _a_r_g_u_m_e_n_t are printed until + the end is reached or until the number of characters + indicated by the precision specification is reached; + if the precision is omitted, all characters in the + string are printed. + + %% Print a `%'; no argument is used. + + In no case does a non-existent or small field width cause + truncation of a field; padding takes place only if the specified + field width exceeds the actual width. + + set [{ --ooppttiioonnss | ++ooppttiioonnss | ---- }}] _a_r_g _._._. + The sseett command performs three different functions. + + With no arguments, it lists the values of all shell variables. + + If options are given, it sets the specified option flags, or + clears them as described in the section called _A_r_g_u_m_e_n_t _L_i_s_t + _P_r_o_c_e_s_s_i_n_g. As a special case, if the option is -o or +o and no + argument is supplied, the shell prints the settings of all its + options. If the option is -o, the settings are printed in a + human-readable format; if the option is +o, the settings are + printed in a format suitable for reinput to the shell to affect + the same option settings. + + The third use of the set command is to set the values of the + shell's positional parameters to the specified args. To change + the positional parameters without changing any options, use ``--'' + as the first argument to set. If no args are present, the set + command will clear all the positional parameters (equivalent to + executing ``shift $#''.) + + shift [_n] + Shift the positional parameters n times. A sshhiifftt sets the value + of _$_1 to the value of _$_2, the value of _$_2 to the value of _$_3, and + so on, decreasing the value of _$_# by one. If n is greater than + the number of positional parameters, sshhiifftt will issue an error + message, and exit with return status 2. + + test _e_x_p_r_e_s_s_i_o_n + + [ _e_x_p_r_e_s_s_i_o_n] + The tteesstt utility evaluates the expression and, if it evaluates to + true, returns a zero (true) exit status; otherwise it returns 1 + (false). If there is no expression, test also returns 1 (false). + + All operators and flags are separate arguments to the tteesstt + utility. + + The following primaries are used to construct expression: + + --bb _f_i_l_e True if _f_i_l_e exists and is a block special file. + + --cc _f_i_l_e True if _f_i_l_e exists and is a character special file. + + --dd _f_i_l_e True if _f_i_l_e exists and is a directory. + + --ee _f_i_l_e True if _f_i_l_e exists (regardless of type). + + --ff _f_i_l_e True if _f_i_l_e exists and is a regular file. + + --gg _f_i_l_e True if _f_i_l_e exists and its set group ID flag is + set. + + --hh _f_i_l_e True if _f_i_l_e exists and is a symbolic link. + + --kk _f_i_l_e True if _f_i_l_e exists and its sticky bit is set. + + --nn _s_t_r_i_n_g True if the length of _s_t_r_i_n_g is nonzero. + + --pp _f_i_l_e True if _f_i_l_e is a named pipe (FIFO). + + --rr _f_i_l_e True if _f_i_l_e exists and is readable. + + --ss _f_i_l_e True if _f_i_l_e exists and has a size greater than + zero. + + --tt _f_i_l_e___d_e_s_c_r_i_p_t_o_r + True if the file whose file descriptor number is + _f_i_l_e___d_e_s_c_r_i_p_t_o_r is open and is associated with a + terminal. + + --uu _f_i_l_e True if _f_i_l_e exists and its set user ID flag is set. + + --ww _f_i_l_e True if _f_i_l_e exists and is writable. True indicates + only that the write flag is on. The file is not + writable on a read-only file system even if this + test indicates true. + + --xx _f_i_l_e True if _f_i_l_e exists and is executable. True + indicates only that the execute flag is on. If _f_i_l_e + is a directory, true indicates that _f_i_l_e can be + searched. + + --zz _s_t_r_i_n_g True if the length of _s_t_r_i_n_g is zero. + + --LL _f_i_l_e True if _f_i_l_e exists and is a symbolic link. This + operator is retained for compatibility with previous + versions of this program. Do not rely on its + existence; use --hh instead. + + --OO _f_i_l_e True if _f_i_l_e exists and its owner matches the + effective user id of this process. + + --GG _f_i_l_e True if _f_i_l_e exists and its group matches the + effective group id of this process. + + --SS _f_i_l_e True if _f_i_l_e exists and is a socket. + + _f_i_l_e_1 --nntt _f_i_l_e_2 + True if _f_i_l_e_1 and _f_i_l_e_2 exist and _f_i_l_e_1 is newer + than _f_i_l_e_2. + + _f_i_l_e_1 --oott _f_i_l_e_2 + True if _f_i_l_e_1 and _f_i_l_e_2 exist and _f_i_l_e_1 is older + than _f_i_l_e_2. + + _f_i_l_e_1 --eeff _f_i_l_e_2 + True if _f_i_l_e_1 and _f_i_l_e_2 exist and refer to the same + file. + + _s_t_r_i_n_g True if _s_t_r_i_n_g is not the null string. + + _s_1 == _s_2 True if the strings _s_1 and _s_2 are identical. + + _s_1 !!== _s_2 True if the strings _s_1 and _s_2 are not identical. + + _s_1 << _s_2 True if string _s_1 comes before _s_2 based on the ASCII + value of their characters. + + _s_1 >> _s_2 True if string _s_1 comes after _s_2 based on the ASCII + value of their characters. + + _n_1 --eeqq _n_2 True if the integers _n_1 and _n_2 are algebraically + equal. + + _n_1 --nnee _n_2 True if the integers _n_1 and _n_2 are not algebraically + equal. + + _n_1 --ggtt _n_2 True if the integer _n_1 is algebraically greater than + the integer _n_2. + + _n_1 --ggee _n_2 True if the integer _n_1 is algebraically greater than + or equal to the integer _n_2. + + _n_1 --lltt _n_2 True if the integer _n_1 is algebraically less than + the integer _n_2. + + _n_1 --llee _n_2 True if the integer _n_1 is algebraically less than or + equal to the integer _n_2. + + These primaries can be combined with the following operators: + + !! _e_x_p_r_e_s_s_i_o_n True if _e_x_p_r_e_s_s_i_o_n is false. + + _e_x_p_r_e_s_s_i_o_n_1 --aa _e_x_p_r_e_s_s_i_o_n_2 + True if both _e_x_p_r_e_s_s_i_o_n_1 and _e_x_p_r_e_s_s_i_o_n_2 are true. + + _e_x_p_r_e_s_s_i_o_n_1 --oo _e_x_p_r_e_s_s_i_o_n_2 + True if either _e_x_p_r_e_s_s_i_o_n_1 or _e_x_p_r_e_s_s_i_o_n_2 are true. + + ((_e_x_p_r_e_s_s_i_o_n)) True if expression is true. + + The --aa operator has higher precedence than the --oo operator. + + times Print the accumulated user and system times for the shell and for + processes run from the shell. The return status is 0. + + trap [_a_c_t_i_o_n _s_i_g_n_a_l _._._.] + Cause the shell to parse and execute action when any of the + specified signals are received. The signals are specified by + signal number or as the name of the signal. If _s_i_g_n_a_l is 0, the + action is executed when the shell exits. _a_c_t_i_o_n may be null, + which cause the specified signals to be ignored. With _a_c_t_i_o_n + omitted or set to `-' the specified signals are set to their + default action. When the shell forks off a subshell, it resets + trapped (but not ignored) signals to the default action. The ttrraapp + command has no effect on signals that were ignored on entry to the + shell. ttrraapp without any arguments cause it to write a list of + signals and their associated action to the standard output in a + format that is suitable as an input to the shell that achieves the + same trapping results. + + Examples: + + trap + + List trapped signals and their corresponding action + + trap '' INT QUIT tstp 30 + + Ignore signals INT QUIT TSTP USR1 + + trap date INT + + Print date upon receiving signal INT + + type [_n_a_m_e _._._.] + Interpret each name as a command and print the resolution of the + command search. Possible resolutions are: shell keyword, alias, + shell builtin, command, tracked alias and not found. For aliases + the alias expansion is printed; for commands and tracked aliases + the complete pathname of the command is printed. + + ulimit [--HH | --SS] [--aa | --ttffddssccmmllppnn [_v_a_l_u_e]] + Inquire about or set the hard or soft limits on processes or set + new limits. The choice between hard limit (which no process is + allowed to violate, and which may not be raised once it has been + lowered) and soft limit (which causes processes to be signaled but + not necessarily killed, and which may be raised) is made with + these flags: + + --HH set or inquire about hard limits + + --SS set or inquire about soft limits. If neither --HH nor + --SS is specified, the soft limit is displayed or both + limits are set. If both are specified, the last one + wins. + + The limit to be interrogated or set, then, is chosen by specifying + any one of these flags: + + --aa show all the current limits + + --tt show or set the limit on CPU time (in seconds) + + --ff show or set the limit on the largest file that can be + created (in 512-byte blocks) + + --dd show or set the limit on the data segment size of a + process (in kilobytes) + + --ss show or set the limit on the stack size of a process + (in kilobytes) + + --cc show or set the limit on the largest core dump size + that can be produced (in 512-byte blocks) + + --mm show or set the limit on the total physical memory + that can be in use by a process (in kilobytes) + + --ll show or set the limit on how much memory a process can + lock with mlock(2) (in kilobytes) + + --pp show or set the limit on the number of processes this + user can have at one time + + --nn show or set the limit on the number files a process + can have open at once + + If none of these is specified, it is the limit on file size that + is shown or set. If value is specified, the limit is set to that + number; otherwise the current limit is displayed. + + Limits of an arbitrary process can be displayed or set using the + sysctl(8) utility. + + umask [_m_a_s_k] + Set the value of umask (see umask(2)) to the specified octal + value. If the argument is omitted, the umask value is printed. + + unalias [--aa] [_n_a_m_e] + If _n_a_m_e is specified, the shell removes that alias. If --aa is + specified, all aliases are removed. + + unset [--ffvv] _n_a_m_e _._._. + The specified variables and functions are unset and unexported. + If --ff or --vv is specified, the corresponding function or variable + is unset, respectively. If a given name corresponds to both a + variable and a function, and no options are given, only the + variable is unset. + + wait [_j_o_b] + Wait for the specified job to complete and return the exit status + of the last process in the job. If the argument is omitted, wait + for all jobs to complete and the return an exit status of zero. + + CCoommmmaanndd LLiinnee EEddiittiinngg + When ddaasshh is being used interactively from a terminal, the current + command and the command history (see ffcc in _B_u_i_l_t_i_n_s) can be edited using + vi-mode command-line editing. This mode uses commands, described below, + similar to a subset of those described in the vi man page. The command + `set -o vi' enables vi-mode editing and place sh into vi insert mode. + With vi-mode enabled, sh can be switched between insert mode and command + mode. The editor is not described in full here, but will be in a later + document. It's similar to vi: typing will throw you into command + VI command mode. Hitting while in command mode will pass the + line to the shell. + +EEXXIITT SSTTAATTUUSS + Errors that are detected by the shell, such as a syntax error, will cause + the shell to exit with a non-zero exit status. If the shell is not an + interactive shell, the execution of the shell file will be aborted. + Otherwise the shell will return the exit status of the last command + executed, or if the exit builtin is used with a numeric argument, it will + return the argument. + +EENNVVIIRROONNMMEENNTT + HOME Set automatically by login(1) from the user's login directory + in the password file (passwd(4)). This environment variable + also functions as the default argument for the cd builtin. + + PATH The default search path for executables. See the above + section _P_a_t_h _S_e_a_r_c_h. + + CDPATH The search path used with the cd builtin. + + MAIL The name of a mail file, that will be checked for the arrival + of new mail. Overridden by MAILPATH. + + MAILCHECK The frequency in seconds that the shell checks for the arrival + of mail in the files specified by the MAILPATH or the MAIL + file. If set to 0, the check will occur at each prompt. + + MAILPATH A colon ``:'' separated list of file names, for the shell to + check for incoming mail. This environment setting overrides + the MAIL setting. There is a maximum of 10 mailboxes that can + be monitored at once. + + PS1 The primary prompt string, which defaults to ``$ '', unless + you are the superuser, in which case it defaults to ``# ''. + + PS2 The secondary prompt string, which defaults to ``> ''. + + PS4 Output before each line when execution trace (set -x) is + enabled, defaults to ``+ ''. + + IFS Input Field Separators. This is normally set to , + , and . See the _W_h_i_t_e _S_p_a_c_e _S_p_l_i_t_t_i_n_g section + for more details. + + TERM The default terminal setting for the shell. This is inherited + by children of the shell, and is used in the history editing + modes. + + HISTSIZE The number of lines in the history buffer for the shell. + + PWD The logical value of the current working directory. This is + set by the ccdd command. + + OLDPWD The previous logical value of the current working directory. + This is set by the ccdd command. + + PPID The process ID of the parent process of the shell. + +FFIILLEESS + _$_H_O_M_E_/_._p_r_o_f_i_l_e + + _/_e_t_c_/_p_r_o_f_i_l_e + +SSEEEE AALLSSOO + csh(1), echo(1), getopt(1), ksh(1), login(1), printf(1), test(1), + getopt(3), passwd(5), environ(7), sysctl(8) + +HHIISSTTOORRYY + ddaasshh is a POSIX-compliant implementation of /bin/sh that aims to be as + small as possible. ddaasshh is a direct descendant of the NetBSD version of + ash (the Almquist SHell), ported to Linux in early 1997. It was renamed + to ddaasshh in 2002. + +BBUUGGSS + Setuid shell scripts should be avoided at all costs, as they are a + significant security risk. + + PS1, PS2, and PS4 should be subject to parameter expansion before being + displayed. + +SunOS 5.11 January 19, 2003 SunOS 5.11 diff --git a/shells/dash/files/src/error.c b/shells/dash/files/src/error.c new file mode 100644 index 0000000000000..9d31989ee8cb8 --- /dev/null +++ b/shells/dash/files/src/error.c @@ -0,0 +1,232 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Errors and exceptions. + */ + +#include +#include +#include +#include +#include +#include + +#include "shell.h" +#include "main.h" +#include "options.h" +#include "output.h" +#include "error.h" +#include "show.h" +#include "eval.h" +#include "parser.h" +#include "system.h" + + +/* + * Code to handle exceptions in C. + */ + +struct jmploc *handler; +int exception; +int suppressint; +volatile sig_atomic_t intpending; +int errlinno; + + +static void exverror(int, const char *, va_list) + __attribute__((__noreturn__)); + +/* + * Called to raise an exception. Since C doesn't include exceptions, we + * just do a longjmp to the exception handler. The type of exception is + * stored in the global variable "exception". + */ + +void +exraise(int e) +{ +#ifdef DEBUG + if (handler == NULL) + abort(); +#endif + INTOFF; + + exception = e; + longjmp(handler->loc, 1); +} + + +/* + * Called from trap.c when a SIGINT is received. (If the user specifies + * that SIGINT is to be trapped or ignored using the trap builtin, then + * this routine is not called.) Suppressint is nonzero when interrupts + * are held using the INTOFF macro. (The test for iflag is just + * defensive programming.) + */ + +void +onint(void) { + + intpending = 0; + sigclearmask(); + if (!(rootshell && iflag)) { + signal(SIGINT, SIG_DFL); + raise(SIGINT); + } + exraise(EXINT); + /* NOTREACHED */ +} + +static void +exvwarning2(const char *msg, va_list ap) +{ + struct output *errs; + const char *name; + const char *fmt; + + errs = out2; + name = arg0 ? arg0 : "sh"; + if (!commandname) + fmt = "%s: %d: "; + else + fmt = "%s: %d: %s: "; + outfmt(errs, fmt, name, errlinno, commandname); + doformat(errs, msg, ap); +#if FLUSHERR + outc('\n', errs); +#else + outcslow('\n', errs); +#endif +} + +#define exvwarning(a, b, c) exvwarning2(b, c) + +/* + * Exverror is called to raise the error exception. If the second argument + * is not NULL then error prints an error message using printf style + * formatting. It then raises the error exception. + */ +static void +exverror(int cond, const char *msg, va_list ap) +{ +#ifdef DEBUG + if (msg) { + va_list aq; + TRACE(("exverror(%d, \"", cond)); + va_copy(aq, ap); + TRACEV((msg, aq)); + va_end(aq); + TRACE(("\") pid=%d\n", getpid())); + } else + TRACE(("exverror(%d, NULL) pid=%d\n", cond, getpid())); + if (msg) +#endif + exvwarning(-1, msg, ap); + + flushall(); + exraise(cond); + /* NOTREACHED */ +} + + +void +sh_error(const char *msg, ...) +{ + va_list ap; + + exitstatus = 2; + + va_start(ap, msg); + exverror(EXERROR, msg, ap); + /* NOTREACHED */ + va_end(ap); +} + + +void +exerror(int cond, const char *msg, ...) +{ + va_list ap; + + va_start(ap, msg); + exverror(cond, msg, ap); + /* NOTREACHED */ + va_end(ap); +} + +/* + * error/warning routines for external builtins + */ + +void +sh_warnx(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + exvwarning(-1, fmt, ap); + va_end(ap); +} + + +/* + * Return a string describing an error. The returned string may be a + * pointer to a static buffer that will be overwritten on the next call. + * Action describes the operation that got the error. + */ + +const char * +errmsg(int e, int action) +{ + if (e != ENOENT && e != ENOTDIR) + return strerror(e); + + if (action & E_OPEN) + return "No such file"; + else if (action & E_CREAT) + return "Directory nonexistent"; + else + return "not found"; +} + + +#ifdef REALLY_SMALL +void +__inton() { + if (--suppressint == 0 && intpending) { + onint(); + } +} +#endif diff --git a/shells/dash/files/src/error.h b/shells/dash/files/src/error.h new file mode 100644 index 0000000000000..9630b56d1422d --- /dev/null +++ b/shells/dash/files/src/error.h @@ -0,0 +1,128 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)error.h 8.2 (Berkeley) 5/4/95 + */ + +#include +#include + +/* + * Types of operations (passed to the errmsg routine). + */ + +#define E_OPEN 01 /* opening a file */ +#define E_CREAT 02 /* creating a file */ +#define E_EXEC 04 /* executing a program */ + + +/* + * We enclose jmp_buf in a structure so that we can declare pointers to + * jump locations. The global variable handler contains the location to + * jump to when an exception occurs, and the global variable exception + * contains a code identifying the exeception. To implement nested + * exception handlers, the user should save the value of handler on entry + * to an inner scope, set handler to point to a jmploc structure for the + * inner scope, and restore handler on exit from the scope. + */ + +struct jmploc { + jmp_buf loc; +}; + +extern struct jmploc *handler; +extern int exception; + +/* exceptions */ +#define EXINT 0 /* SIGINT received */ +#define EXERROR 1 /* a generic error */ +#define EXEXIT 4 /* exit the shell */ + + +/* + * These macros allow the user to suspend the handling of interrupt signals + * over a period of time. This is similar to SIGHOLD to or sigblock, but + * much more efficient and portable. (But hacking the kernel is so much + * more fun than worrying about efficiency and portability. :-)) + */ + +extern int suppressint; +extern volatile sig_atomic_t intpending; + +#define barrier() ({ __asm__ __volatile__ ("": : :"memory"); }) +#define INTOFF \ + ({ \ + suppressint++; \ + barrier(); \ + 0; \ + }) +#ifdef REALLY_SMALL +void __inton(void); +#define INTON __inton() +#else +#define INTON \ + ({ \ + barrier(); \ + if (--suppressint == 0 && intpending) onint(); \ + 0; \ + }) +#endif +#define FORCEINTON \ + ({ \ + barrier(); \ + suppressint = 0; \ + if (intpending) onint(); \ + 0; \ + }) +#define SAVEINT(v) ((v) = suppressint) +#define RESTOREINT(v) \ + ({ \ + barrier(); \ + if ((suppressint = (v)) == 0 && intpending) onint(); \ + 0; \ + }) +#define CLEAR_PENDING_INT intpending = 0 +#define int_pending() intpending + +void exraise(int) __attribute__((__noreturn__)); +#ifdef USE_NORETURN +void onint(void) __attribute__((__noreturn__)); +#else +void onint(void); +#endif +extern int errlinno; +void sh_error(const char *, ...) __attribute__((__noreturn__)); +void exerror(int, const char *, ...) __attribute__((__noreturn__)); +const char *errmsg(int, int); + +void sh_warnx(const char *, ...); diff --git a/shells/dash/files/src/eval.c b/shells/dash/files/src/eval.c new file mode 100644 index 0000000000000..c7358a629c319 --- /dev/null +++ b/shells/dash/files/src/eval.c @@ -0,0 +1,1087 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include + +/* + * Evaluate a command. + */ + +#include "shell.h" +#include "nodes.h" +#include "syntax.h" +#include "expand.h" +#include "parser.h" +#include "jobs.h" +#include "eval.h" +#include "builtins.h" +#include "options.h" +#include "exec.h" +#include "redir.h" +#include "input.h" +#include "output.h" +#include "trap.h" +#include "var.h" +#include "memalloc.h" +#include "error.h" +#include "show.h" +#include "mystring.h" +#ifndef SMALL +#include "myhistedit.h" +#endif + + +int evalskip; /* set if we are skipping commands */ +STATIC int skipcount; /* number of levels to skip */ +MKINIT int loopnest; /* current loop nesting level */ +static int funcline; /* starting line number of current function, or 0 if not in a function */ + + +char *commandname; +int exitstatus; /* exit status of last command */ +int back_exitstatus; /* exit status of backquoted command */ + + +#if !defined(__alpha__) || (defined(__GNUC__) && __GNUC__ >= 3) +STATIC +#endif +void evaltreenr(union node *, int) __attribute__ ((__noreturn__)); +STATIC void evalloop(union node *, int); +STATIC void evalfor(union node *, int); +STATIC void evalcase(union node *, int); +STATIC void evalsubshell(union node *, int); +STATIC void expredir(union node *); +STATIC void evalpipe(union node *, int); +#ifdef notyet +STATIC void evalcommand(union node *, int, struct backcmd *); +#else +STATIC void evalcommand(union node *, int); +#endif +STATIC int evalbltin(const struct builtincmd *, int, char **, int); +STATIC int evalfun(struct funcnode *, int, char **, int); +STATIC void prehash(union node *); +STATIC int eprintlist(struct output *, struct strlist *, int); +STATIC int bltincmd(int, char **); + + +STATIC const struct builtincmd bltin = { + name: nullstr, + builtin: bltincmd +}; + + +/* + * Called to reset things after an exception. + */ + +#ifdef mkinit +INCLUDE "eval.h" + +RESET { + evalskip = 0; + loopnest = 0; +} +#endif + + + +/* + * The eval commmand. + */ + +static int evalcmd(int argc, char **argv, int flags) +{ + char *p; + char *concat; + char **ap; + + if (argc > 1) { + p = argv[1]; + if (argc > 2) { + STARTSTACKSTR(concat); + ap = argv + 2; + for (;;) { + concat = stputs(p, concat); + if ((p = *ap++) == NULL) + break; + STPUTC(' ', concat); + } + STPUTC('\0', concat); + p = grabstackstr(concat); + } + return evalstring(p, flags & EV_TESTED); + } + return 0; +} + + +/* + * Execute a command or commands contained in a string. + */ + +int +evalstring(char *s, int flags) +{ + union node *n; + struct stackmark smark; + int status; + + setinputstring(s); + setstackmark(&smark); + + status = 0; + while ((n = parsecmd(0)) != NEOF) { + evaltree(n, flags & ~(parser_eof() ? 0 : EV_EXIT)); + status = exitstatus; + popstackmark(&smark); + if (evalskip) + break; + } + popfile(); + + return status; +} + + + +/* + * Evaluate a parse tree. The value is left in the global variable + * exitstatus. + */ + +void +evaltree(union node *n, int flags) +{ + int checkexit = 0; + void (*evalfn)(union node *, int); + unsigned isor; + int status; + if (n == NULL) { + TRACE(("evaltree(NULL) called\n")); + goto out; + } +#ifndef SMALL + displayhist = 1; /* show history substitutions done with fc */ +#endif + TRACE(("pid %d, evaltree(%p: %d, %d) called\n", + getpid(), n, n->type, flags)); + switch (n->type) { + default: +#ifdef DEBUG + out1fmt("Node type = %d\n", n->type); +#ifndef USE_GLIBC_STDIO + flushout(out1); +#endif + break; +#endif + case NNOT: + evaltree(n->nnot.com, EV_TESTED); + status = !exitstatus; + goto setstatus; + case NREDIR: + errlinno = lineno = n->nredir.linno; + if (funcline) + lineno -= funcline - 1; + expredir(n->nredir.redirect); + pushredir(n->nredir.redirect); + status = redirectsafe(n->nredir.redirect, REDIR_PUSH); + if (!status) { + evaltree(n->nredir.n, flags & EV_TESTED); + status = exitstatus; + } + if (n->nredir.redirect) + popredir(0); + goto setstatus; + case NCMD: +#ifdef notyet + if (eflag && !(flags & EV_TESTED)) + checkexit = ~0; + evalcommand(n, flags, (struct backcmd *)NULL); + break; +#else + evalfn = evalcommand; +checkexit: + if (eflag && !(flags & EV_TESTED)) + checkexit = ~0; + goto calleval; +#endif + case NFOR: + evalfn = evalfor; + goto calleval; + case NWHILE: + case NUNTIL: + evalfn = evalloop; + goto calleval; + case NSUBSHELL: + case NBACKGND: + evalfn = evalsubshell; + goto checkexit; + case NPIPE: + evalfn = evalpipe; + goto checkexit; + case NCASE: + evalfn = evalcase; + goto calleval; + case NAND: + case NOR: + case NSEMI: +#if NAND + 1 != NOR +#error NAND + 1 != NOR +#endif +#if NOR + 1 != NSEMI +#error NOR + 1 != NSEMI +#endif + isor = n->type - NAND; + evaltree( + n->nbinary.ch1, + (flags | ((isor >> 1) - 1)) & EV_TESTED + ); + if (!exitstatus == isor) + break; + if (!evalskip) { + n = n->nbinary.ch2; +evaln: + evalfn = evaltree; +calleval: + evalfn(n, flags); + break; + } + break; + case NIF: + evaltree(n->nif.test, EV_TESTED); + if (evalskip) + break; + if (exitstatus == 0) { + n = n->nif.ifpart; + goto evaln; + } else if (n->nif.elsepart) { + n = n->nif.elsepart; + goto evaln; + } + goto success; + case NDEFUN: + defun(n); +success: + status = 0; +setstatus: + exitstatus = status; + break; + } +out: + if (checkexit & exitstatus) + goto exexit; + + if (pendingsigs) + dotrap(); + + if (flags & EV_EXIT) { +exexit: + exraise(EXEXIT); + } +} + + +#if !defined(__alpha__) || (defined(__GNUC__) && __GNUC__ >= 3) +STATIC +#endif +void evaltreenr(union node *n, int flags) +#ifdef HAVE_ATTRIBUTE_ALIAS + __attribute__ ((alias("evaltree"))); +#else +{ + evaltree(n, flags); + abort(); +} +#endif + + +STATIC void +evalloop(union node *n, int flags) +{ + int status; + + loopnest++; + status = 0; + flags &= EV_TESTED; + for (;;) { + int i; + + evaltree(n->nbinary.ch1, EV_TESTED); + if (evalskip) { +skipping: if (evalskip == SKIPCONT && --skipcount <= 0) { + evalskip = 0; + continue; + } + if (evalskip == SKIPBREAK && --skipcount <= 0) + evalskip = 0; + break; + } + i = exitstatus; + if (n->type != NWHILE) + i = !i; + if (i != 0) + break; + evaltree(n->nbinary.ch2, flags); + status = exitstatus; + if (evalskip) + goto skipping; + } + loopnest--; + exitstatus = status; +} + + + +STATIC void +evalfor(union node *n, int flags) +{ + struct arglist arglist; + union node *argp; + struct strlist *sp; + struct stackmark smark; + + errlinno = lineno = n->nfor.linno; + if (funcline) + lineno -= funcline - 1; + + setstackmark(&smark); + arglist.lastp = &arglist.list; + for (argp = n->nfor.args ; argp ; argp = argp->narg.next) { + expandarg(argp, &arglist, EXP_FULL | EXP_TILDE); + /* XXX */ + if (evalskip) + goto out; + } + *arglist.lastp = NULL; + + exitstatus = 0; + loopnest++; + flags &= EV_TESTED; + for (sp = arglist.list ; sp ; sp = sp->next) { + setvar(n->nfor.var, sp->text, 0); + evaltree(n->nfor.body, flags); + if (evalskip) { + if (evalskip == SKIPCONT && --skipcount <= 0) { + evalskip = 0; + continue; + } + if (evalskip == SKIPBREAK && --skipcount <= 0) + evalskip = 0; + break; + } + } + loopnest--; +out: + popstackmark(&smark); +} + + + +STATIC void +evalcase(union node *n, int flags) +{ + union node *cp; + union node *patp; + struct arglist arglist; + struct stackmark smark; + + errlinno = lineno = n->ncase.linno; + if (funcline) + lineno -= funcline - 1; + + setstackmark(&smark); + arglist.lastp = &arglist.list; + expandarg(n->ncase.expr, &arglist, EXP_TILDE); + exitstatus = 0; + for (cp = n->ncase.cases ; cp && evalskip == 0 ; cp = cp->nclist.next) { + for (patp = cp->nclist.pattern ; patp ; patp = patp->narg.next) { + if (casematch(patp, arglist.list->text)) { + if (evalskip == 0) { + evaltree(cp->nclist.body, flags); + } + goto out; + } + } + } +out: + popstackmark(&smark); +} + + + +/* + * Kick off a subshell to evaluate a tree. + */ + +STATIC void +evalsubshell(union node *n, int flags) +{ + struct job *jp; + int backgnd = (n->type == NBACKGND); + int status; + + errlinno = lineno = n->nredir.linno; + if (funcline) + lineno -= funcline - 1; + + expredir(n->nredir.redirect); + if (!backgnd && flags & EV_EXIT && !have_traps()) + goto nofork; + INTOFF; + jp = makejob(n, 1); + if (forkshell(jp, n, backgnd) == 0) { + INTON; + flags |= EV_EXIT; + if (backgnd) + flags &=~ EV_TESTED; +nofork: + redirect(n->nredir.redirect, 0); + evaltreenr(n->nredir.n, flags); + /* never returns */ + } + status = 0; + if (! backgnd) + status = waitforjob(jp); + exitstatus = status; + INTON; +} + + + +/* + * Compute the names of the files in a redirection list. + */ + +STATIC void +expredir(union node *n) +{ + union node *redir; + + for (redir = n ; redir ; redir = redir->nfile.next) { + struct arglist fn; + fn.lastp = &fn.list; + switch (redir->type) { + case NFROMTO: + case NFROM: + case NTO: + case NCLOBBER: + case NAPPEND: + expandarg(redir->nfile.fname, &fn, EXP_TILDE | EXP_REDIR); + redir->nfile.expfname = fn.list->text; + break; + case NFROMFD: + case NTOFD: + if (redir->ndup.vname) { + expandarg(redir->ndup.vname, &fn, EXP_FULL | EXP_TILDE); + fixredir(redir, fn.list->text, 1); + } + break; + } + } +} + + + +/* + * Evaluate a pipeline. All the processes in the pipeline are children + * of the process creating the pipeline. (This differs from some versions + * of the shell, which make the last process in a pipeline the parent + * of all the rest.) + */ + +STATIC void +evalpipe(union node *n, int flags) +{ + struct job *jp; + struct nodelist *lp; + int pipelen; + int prevfd; + int pip[2]; + + TRACE(("evalpipe(0x%lx) called\n", (long)n)); + pipelen = 0; + for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) + pipelen++; + flags |= EV_EXIT; + INTOFF; + jp = makejob(n, pipelen); + prevfd = -1; + for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) { + prehash(lp->n); + pip[1] = -1; + if (lp->next) { + if (pipe(pip) < 0) { + close(prevfd); + sh_error("Pipe call failed"); + } + } + if (forkshell(jp, lp->n, n->npipe.backgnd) == 0) { + INTON; + if (pip[1] >= 0) { + close(pip[0]); + } + if (prevfd > 0) { + dup2(prevfd, 0); + close(prevfd); + } + if (pip[1] > 1) { + dup2(pip[1], 1); + close(pip[1]); + } + evaltreenr(lp->n, flags); + /* never returns */ + } + if (prevfd >= 0) + close(prevfd); + prevfd = pip[0]; + close(pip[1]); + } + if (n->npipe.backgnd == 0) { + exitstatus = waitforjob(jp); + TRACE(("evalpipe: job done exit status %d\n", exitstatus)); + } + INTON; +} + + + +/* + * Execute a command inside back quotes. If it's a builtin command, we + * want to save its output in a block obtained from malloc. Otherwise + * we fork off a subprocess and get the output of the command via a pipe. + * Should be called with interrupts off. + */ + +void +evalbackcmd(union node *n, struct backcmd *result) +{ + int pip[2]; + struct job *jp; + + result->fd = -1; + result->buf = NULL; + result->nleft = 0; + result->jp = NULL; + if (n == NULL) { + goto out; + } + + if (pipe(pip) < 0) + sh_error("Pipe call failed"); + jp = makejob(n, 1); + if (forkshell(jp, n, FORK_NOJOB) == 0) { + FORCEINTON; + close(pip[0]); + if (pip[1] != 1) { + dup2(pip[1], 1); + close(pip[1]); + } + ifsfree(); + evaltreenr(n, EV_EXIT); + /* NOTREACHED */ + } + close(pip[1]); + result->fd = pip[0]; + result->jp = jp; + +out: + TRACE(("evalbackcmd done: fd=%d buf=0x%x nleft=%d jp=0x%x\n", + result->fd, result->buf, result->nleft, result->jp)); +} + +static char ** +parse_command_args(char **argv, const char **path) +{ + char *cp, c; + + for (;;) { + cp = *++argv; + if (!cp) + return 0; + if (*cp++ != '-') + break; + if (!(c = *cp++)) + break; + if (c == '-' && !*cp) { + if (!*++argv) + return 0; + break; + } + do { + switch (c) { + case 'p': + *path = defpath; + break; + default: + /* run 'typecmd' for other options */ + return 0; + } + } while ((c = *cp++)); + } + return argv; +} + + + +/* + * Execute a simple command. + */ + +STATIC void +#ifdef notyet +evalcommand(union node *cmd, int flags, struct backcmd *backcmd) +#else +evalcommand(union node *cmd, int flags) +#endif +{ + struct localvar_list *localvar_stop; + struct redirtab *redir_stop; + struct stackmark smark; + union node *argp; + struct arglist arglist; + struct arglist varlist; + char **argv; + int argc; + struct strlist *sp; +#ifdef notyet + int pip[2]; +#endif + struct cmdentry cmdentry; + struct job *jp; + char *lastarg; + const char *path; + int spclbltin; + int execcmd; + int status; + char **nargv; + + errlinno = lineno = cmd->ncmd.linno; + if (funcline) + lineno -= funcline - 1; + + /* First expand the arguments. */ + TRACE(("evalcommand(0x%lx, %d) called\n", (long)cmd, flags)); + setstackmark(&smark); + localvar_stop = pushlocalvars(); + back_exitstatus = 0; + + cmdentry.cmdtype = CMDBUILTIN; + cmdentry.u.cmd = &bltin; + varlist.lastp = &varlist.list; + *varlist.lastp = NULL; + arglist.lastp = &arglist.list; + *arglist.lastp = NULL; + + argc = 0; + for (argp = cmd->ncmd.args; argp; argp = argp->narg.next) { + struct strlist **spp; + + spp = arglist.lastp; + expandarg(argp, &arglist, EXP_FULL | EXP_TILDE); + for (sp = *spp; sp; sp = sp->next) + argc++; + } + + /* Reserve one extra spot at the front for shellexec. */ + nargv = stalloc(sizeof (char *) * (argc + 2)); + argv = ++nargv; + for (sp = arglist.list ; sp ; sp = sp->next) { + TRACE(("evalcommand arg: %s\n", sp->text)); + *nargv++ = sp->text; + } + *nargv = NULL; + + lastarg = NULL; + if (iflag && funcline == 0 && argc > 0) + lastarg = nargv[-1]; + + preverrout.fd = 2; + expredir(cmd->ncmd.redirect); + redir_stop = pushredir(cmd->ncmd.redirect); + status = redirectsafe(cmd->ncmd.redirect, REDIR_PUSH|REDIR_SAVEFD2); + + path = vpath.text; + for (argp = cmd->ncmd.assign; argp; argp = argp->narg.next) { + struct strlist **spp; + char *p; + + spp = varlist.lastp; + expandarg(argp, &varlist, EXP_VARTILDE); + + mklocal((*spp)->text); + + /* + * Modify the command lookup path, if a PATH= assignment + * is present + */ + p = (*spp)->text; + if (varequal(p, path)) + path = p; + } + + /* Print the command if xflag is set. */ + if (xflag) { + struct output *out; + int sep; + + out = &preverrout; + outstr(expandstr(ps4val()), out); + sep = 0; + sep = eprintlist(out, varlist.list, sep); + eprintlist(out, arglist.list, sep); + outcslow('\n', out); +#ifdef FLUSHERR + flushout(out); +#endif + } + + execcmd = 0; + spclbltin = -1; + + /* Now locate the command. */ + if (argc) { + const char *oldpath; + int cmd_flag = DO_ERR; + + path += 5; + oldpath = path; + for (;;) { + find_command(argv[0], &cmdentry, cmd_flag, path); + if (cmdentry.cmdtype == CMDUNKNOWN) { + status = 127; +#ifdef FLUSHERR + flushout(&errout); +#endif + goto bail; + } + + /* implement bltin and command here */ + if (cmdentry.cmdtype != CMDBUILTIN) + break; + if (spclbltin < 0) + spclbltin = + cmdentry.u.cmd->flags & + BUILTIN_SPECIAL + ; + if (cmdentry.u.cmd == EXECCMD) + execcmd++; + if (cmdentry.u.cmd != COMMANDCMD) + break; + + path = oldpath; + nargv = parse_command_args(argv, &path); + if (!nargv) + break; + argc -= nargv - argv; + argv = nargv; + cmd_flag |= DO_NOFUNC; + } + } + + if (status) { +bail: + exitstatus = status; + + /* We have a redirection error. */ + if (spclbltin > 0) + exraise(EXERROR); + + goto out; + } + + /* Execute the command. */ + switch (cmdentry.cmdtype) { + default: + /* Fork off a child process if necessary. */ + if (!(flags & EV_EXIT) || have_traps()) { + INTOFF; + jp = makejob(cmd, 1); + if (forkshell(jp, cmd, FORK_FG) != 0) { + exitstatus = waitforjob(jp); + INTON; + break; + } + FORCEINTON; + } + listsetvar(varlist.list, VEXPORT|VSTACK); + shellexec(argv, path, cmdentry.u.index); + /* NOTREACHED */ + + case CMDBUILTIN: + if (spclbltin > 0 || argc == 0) { + poplocalvars(1); + if (execcmd && argc > 1) + listsetvar(varlist.list, VEXPORT); + } + if (evalbltin(cmdentry.u.cmd, argc, argv, flags)) { + int status; + int i; + + i = exception; + if (i == EXEXIT) + goto raise; + + status = (i == EXINT) ? SIGINT + 128 : 2; + exitstatus = status; + + if (i == EXINT || spclbltin > 0) { +raise: + longjmp(handler->loc, 1); + } + FORCEINTON; + } + break; + + case CMDFUNCTION: + poplocalvars(1); + if (evalfun(cmdentry.u.func, argc, argv, flags)) + goto raise; + break; + } + +out: + if (cmd->ncmd.redirect) + popredir(execcmd); + unwindredir(redir_stop); + unwindlocalvars(localvar_stop); + if (lastarg) + /* dsl: I think this is intended to be used to support + * '_' in 'vi' command mode during line editing... + * However I implemented that within libedit itself. + */ + setvar("_", lastarg, 0); + popstackmark(&smark); +} + +STATIC int +evalbltin(const struct builtincmd *cmd, int argc, char **argv, int flags) +{ + char *volatile savecmdname; + struct jmploc *volatile savehandler; + struct jmploc jmploc; + int status; + int i; + + savecmdname = commandname; + savehandler = handler; + if ((i = setjmp(jmploc.loc))) + goto cmddone; + handler = &jmploc; + commandname = argv[0]; + argptr = argv + 1; + optptr = NULL; /* initialize nextopt */ + if (cmd == EVALCMD) + status = evalcmd(argc, argv, flags); + else + status = (*cmd->builtin)(argc, argv); + flushall(); + status |= outerr(out1); + exitstatus = status; +cmddone: + freestdout(); + commandname = savecmdname; + handler = savehandler; + + return i; +} + +STATIC int +evalfun(struct funcnode *func, int argc, char **argv, int flags) +{ + volatile struct shparam saveparam; + struct jmploc *volatile savehandler; + struct jmploc jmploc; + int e; + int savefuncline; + + saveparam = shellparam; + savefuncline = funcline; + savehandler = handler; + if ((e = setjmp(jmploc.loc))) { + goto funcdone; + } + INTOFF; + handler = &jmploc; + shellparam.malloc = 0; + func->count++; + funcline = func->n.ndefun.linno; + INTON; + shellparam.nparam = argc - 1; + shellparam.p = argv + 1; + shellparam.optind = 1; + shellparam.optoff = -1; + pushlocalvars(); + evaltree(func->n.ndefun.body, flags & EV_TESTED); + poplocalvars(0); +funcdone: + INTOFF; + funcline = savefuncline; + freefunc(func); + freeparam(&shellparam); + shellparam = saveparam; + handler = savehandler; + INTON; + evalskip &= ~SKIPFUNC; + return e; +} + + +/* + * Search for a command. This is called before we fork so that the + * location of the command will be available in the parent as well as + * the child. The check for "goodname" is an overly conservative + * check that the name will not be subject to expansion. + */ + +STATIC void +prehash(union node *n) +{ + struct cmdentry entry; + + if (n->type == NCMD && n->ncmd.args) + if (goodname(n->ncmd.args->narg.text)) + find_command(n->ncmd.args->narg.text, &entry, 0, + pathval()); +} + + + +/* + * Builtin commands. Builtin commands whose functions are closely + * tied to evaluation are implemented here. + */ + +/* + * No command given. + */ + +STATIC int +bltincmd(int argc, char **argv) +{ + /* + * Preserve exitstatus of a previous possible redirection + * as POSIX mandates + */ + return back_exitstatus; +} + + +/* + * Handle break and continue commands. Break, continue, and return are + * all handled by setting the evalskip flag. The evaluation routines + * above all check this flag, and if it is set they start skipping + * commands rather than executing them. The variable skipcount is + * the number of loops to break/continue, or the number of function + * levels to return. (The latter is always 1.) It should probably + * be an error to break out of more loops than exist, but it isn't + * in the standard shell so we don't make it one here. + */ + +int +breakcmd(int argc, char **argv) +{ + int n = argc > 1 ? number(argv[1]) : 1; + + if (n <= 0) + badnum(argv[1]); + if (n > loopnest) + n = loopnest; + if (n > 0) { + evalskip = (**argv == 'c')? SKIPCONT : SKIPBREAK; + skipcount = n; + } + return 0; +} + + +/* + * The return command. + */ + +int +returncmd(int argc, char **argv) +{ + /* + * If called outside a function, do what ksh does; + * skip the rest of the file. + */ + evalskip = SKIPFUNC; + return argv[1] ? number(argv[1]) : exitstatus; +} + + +int +falsecmd(int argc, char **argv) +{ + return 1; +} + + +int +truecmd(int argc, char **argv) +{ + return 0; +} + + +int +execcmd(int argc, char **argv) +{ + if (argc > 1) { + iflag = 0; /* exit on error */ + mflag = 0; + optschanged(); + shellexec(argv + 1, pathval(), 0); + } + return 0; +} + + +STATIC int +eprintlist(struct output *out, struct strlist *sp, int sep) +{ + while (sp) { + const char *p; + + p = " %s" + (1 - sep); + sep |= 1; + outfmt(out, p, sp->text); + sp = sp->next; + } + + return sep; +} diff --git a/shells/dash/files/src/eval.h b/shells/dash/files/src/eval.h new file mode 100644 index 0000000000000..dc8acd2a5c4a7 --- /dev/null +++ b/shells/dash/files/src/eval.h @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)eval.h 8.2 (Berkeley) 5/4/95 + */ + +extern char *commandname; /* currently executing command */ +extern int exitstatus; /* exit status of last command */ +extern int back_exitstatus; /* exit status of backquoted command */ + + +struct backcmd { /* result of evalbackcmd */ + int fd; /* file descriptor to read from */ + char *buf; /* buffer */ + int nleft; /* number of chars in buffer */ + struct job *jp; /* job structure for command */ +}; + +/* flags in argument to evaltree */ +#define EV_EXIT 01 /* exit after evaluating tree */ +#define EV_TESTED 02 /* exit status is checked; ignore -e flag */ + +int evalstring(char *, int); +union node; /* BLETCH for ansi C */ +void evaltree(union node *, int); +void evalbackcmd(union node *, struct backcmd *); + +extern int evalskip; + +/* reasons for skipping commands (see comment on breakcmd routine) */ +#define SKIPBREAK (1 << 0) +#define SKIPCONT (1 << 1) +#define SKIPFUNC (1 << 2) diff --git a/shells/dash/files/src/exec.c b/shells/dash/files/src/exec.c new file mode 100644 index 0000000000000..ec0eadd8d0277 --- /dev/null +++ b/shells/dash/files/src/exec.c @@ -0,0 +1,864 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#ifdef HAVE_PATHS_H +#include +#endif + +/* + * When commands are first encountered, they are entered in a hash table. + * This ensures that a full path search will not have to be done for them + * on each invocation. + * + * We should investigate converting to a linear search, even though that + * would make the command name "hash" a misnomer. + */ + +#include "shell.h" +#include "main.h" +#include "nodes.h" +#include "parser.h" +#include "redir.h" +#include "eval.h" +#include "exec.h" +#include "builtins.h" +#include "var.h" +#include "options.h" +#include "output.h" +#include "syntax.h" +#include "memalloc.h" +#include "error.h" +#include "init.h" +#include "mystring.h" +#include "show.h" +#include "jobs.h" +#include "alias.h" +#include "system.h" + + +#define CMDTABLESIZE 31 /* should be prime */ +#define ARB 1 /* actual size determined at run time */ + + + +struct tblentry { + struct tblentry *next; /* next entry in hash chain */ + union param param; /* definition of builtin function */ + short cmdtype; /* index identifying command */ + char rehash; /* if set, cd done since entry created */ + char cmdname[ARB]; /* name of command */ +}; + + +STATIC struct tblentry *cmdtable[CMDTABLESIZE]; +STATIC int builtinloc = -1; /* index in path of %builtin, or -1 */ + + +STATIC void tryexec(char *, char **, char **); +STATIC void printentry(struct tblentry *); +STATIC void clearcmdentry(int); +STATIC struct tblentry *cmdlookup(const char *, int); +STATIC void delete_cmd_entry(void); +STATIC void addcmdentry(char *, struct cmdentry *); +STATIC int describe_command(struct output *, char *, const char *, int); + + +/* + * Exec a program. Never returns. If you change this routine, you may + * have to change the find_command routine as well. + */ + +void +shellexec(char **argv, const char *path, int idx) +{ + char *cmdname; + int e; + char **envp; + int exerrno; + + envp = environment(); + if (strchr(argv[0], '/') != NULL) { + tryexec(argv[0], argv, envp); + e = errno; + } else { + e = ENOENT; + while ((cmdname = padvance(&path, argv[0])) != NULL) { + if (--idx < 0 && pathopt == NULL) { + tryexec(cmdname, argv, envp); + if (errno != ENOENT && errno != ENOTDIR) + e = errno; + } + stunalloc(cmdname); + } + } + + /* Map to POSIX errors */ + switch (e) { + case EACCES: + exerrno = 126; + break; + case ENOENT: + exerrno = 127; + break; + default: + exerrno = 2; + break; + } + exitstatus = exerrno; + TRACE(("shellexec failed for %s, errno %d, suppressint %d\n", + argv[0], e, suppressint )); + exerror(EXEXIT, "%s: %s", argv[0], errmsg(e, E_EXEC)); + /* NOTREACHED */ +} + + +STATIC void +tryexec(char *cmd, char **argv, char **envp) +{ + char *const path_bshell = _PATH_BSHELL; + +repeat: +#ifdef SYSV + do { + execve(cmd, argv, envp); + } while (errno == EINTR); +#else + execve(cmd, argv, envp); +#endif + if (cmd != path_bshell && errno == ENOEXEC) { + *argv-- = cmd; + *argv = cmd = path_bshell; + goto repeat; + } +} + + + +/* + * Do a path search. The variable path (passed by reference) should be + * set to the start of the path before the first call; padvance will update + * this value as it proceeds. Successive calls to padvance will return + * the possible path expansions in sequence. If an option (indicated by + * a percent sign) appears in the path entry then the global variable + * pathopt will be set to point to it; otherwise pathopt will be set to + * NULL. + */ + +const char *pathopt; + +char * +padvance(const char **path, const char *name) +{ + const char *p; + char *q; + const char *start; + size_t len; + + if (*path == NULL) + return NULL; + start = *path; + for (p = start ; *p && *p != ':' && *p != '%' ; p++); + len = p - start + strlen(name) + 2; /* "2" is for '/' and '\0' */ + while (stackblocksize() < len) + growstackblock(); + q = stackblock(); + if (p != start) { + memcpy(q, start, p - start); + q += p - start; + *q++ = '/'; + } + strcpy(q, name); + pathopt = NULL; + if (*p == '%') { + pathopt = ++p; + while (*p && *p != ':') p++; + } + if (*p == ':') + *path = p + 1; + else + *path = NULL; + return stalloc(len); +} + + + +/*** Command hashing code ***/ + + +int +hashcmd(int argc, char **argv) +{ + struct tblentry **pp; + struct tblentry *cmdp; + int c; + struct cmdentry entry; + char *name; + + while ((c = nextopt("r")) != '\0') { + clearcmdentry(0); + return 0; + } + if (*argptr == NULL) { + for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { + for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { + if (cmdp->cmdtype == CMDNORMAL) + printentry(cmdp); + } + } + return 0; + } + c = 0; + while ((name = *argptr) != NULL) { + if ((cmdp = cmdlookup(name, 0)) != NULL + && (cmdp->cmdtype == CMDNORMAL + || (cmdp->cmdtype == CMDBUILTIN && builtinloc >= 0))) + delete_cmd_entry(); + find_command(name, &entry, DO_ERR, pathval()); + if (entry.cmdtype == CMDUNKNOWN) + c = 1; + argptr++; + } + return c; +} + + +STATIC void +printentry(struct tblentry *cmdp) +{ + int idx; + const char *path; + char *name; + + idx = cmdp->param.index; + path = pathval(); + do { + name = padvance(&path, cmdp->cmdname); + stunalloc(name); + } while (--idx >= 0); + out1str(name); + out1fmt(snlfmt, cmdp->rehash ? "*" : nullstr); +} + + + +/* + * Resolve a command name. If you change this routine, you may have to + * change the shellexec routine as well. + */ + +void +find_command(char *name, struct cmdentry *entry, int act, const char *path) +{ + struct tblentry *cmdp; + int idx; + int prev; + char *fullname; + struct stat64 statb; + int e; + int updatetbl; + struct builtincmd *bcmd; + + /* If name contains a slash, don't use PATH or hash table */ + if (strchr(name, '/') != NULL) { + entry->u.index = -1; + if (act & DO_ABS) { + while (stat64(name, &statb) < 0) { +#ifdef SYSV + if (errno == EINTR) + continue; +#endif + entry->cmdtype = CMDUNKNOWN; + return; + } + } + entry->cmdtype = CMDNORMAL; + return; + } + + updatetbl = (path == pathval()); + if (!updatetbl) { + act |= DO_ALTPATH; + if (strstr(path, "%builtin") != NULL) + act |= DO_ALTBLTIN; + } + + /* If name is in the table, check answer will be ok */ + if ((cmdp = cmdlookup(name, 0)) != NULL) { + int bit; + + switch (cmdp->cmdtype) { + default: +#if DEBUG + abort(); +#endif + case CMDNORMAL: + bit = DO_ALTPATH; + break; + case CMDFUNCTION: + bit = DO_NOFUNC; + break; + case CMDBUILTIN: + bit = DO_ALTBLTIN; + break; + } + if (act & bit) { + updatetbl = 0; + cmdp = NULL; + } else if (cmdp->rehash == 0) + /* if not invalidated by cd, we're done */ + goto success; + } + + /* If %builtin not in path, check for builtin next */ + bcmd = find_builtin(name); + if (bcmd && (bcmd->flags & BUILTIN_REGULAR || ( + act & DO_ALTPATH ? !(act & DO_ALTBLTIN) : builtinloc <= 0 + ))) + goto builtin_success; + + /* We have to search path. */ + prev = -1; /* where to start */ + if (cmdp && cmdp->rehash) { /* doing a rehash */ + if (cmdp->cmdtype == CMDBUILTIN) + prev = builtinloc; + else + prev = cmdp->param.index; + } + + e = ENOENT; + idx = -1; +loop: + while ((fullname = padvance(&path, name)) != NULL) { + stunalloc(fullname); + idx++; + if (pathopt) { + if (prefix(pathopt, "builtin")) { + if (bcmd) + goto builtin_success; + continue; + } else if (!(act & DO_NOFUNC) && + prefix(pathopt, "func")) { + /* handled below */ + } else { + /* ignore unimplemented options */ + continue; + } + } + /* if rehash, don't redo absolute path names */ + if (fullname[0] == '/' && idx <= prev) { + if (idx < prev) + continue; + TRACE(("searchexec \"%s\": no change\n", name)); + goto success; + } + while (stat64(fullname, &statb) < 0) { +#ifdef SYSV + if (errno == EINTR) + continue; +#endif + if (errno != ENOENT && errno != ENOTDIR) + e = errno; + goto loop; + } + e = EACCES; /* if we fail, this will be the error */ + if (!S_ISREG(statb.st_mode)) + continue; + if (pathopt) { /* this is a %func directory */ + stalloc(strlen(fullname) + 1); + readcmdfile(fullname); + if ((cmdp = cmdlookup(name, 0)) == NULL || + cmdp->cmdtype != CMDFUNCTION) + sh_error("%s not defined in %s", name, + fullname); + stunalloc(fullname); + goto success; + } +#ifdef notdef + /* XXX this code stops root executing stuff, and is buggy + if you need a group from the group list. */ + if (statb.st_uid == geteuid()) { + if ((statb.st_mode & 0100) == 0) + goto loop; + } else if (statb.st_gid == getegid()) { + if ((statb.st_mode & 010) == 0) + goto loop; + } else { + if ((statb.st_mode & 01) == 0) + goto loop; + } +#endif + TRACE(("searchexec \"%s\" returns \"%s\"\n", name, fullname)); + if (!updatetbl) { + entry->cmdtype = CMDNORMAL; + entry->u.index = idx; + return; + } + INTOFF; + cmdp = cmdlookup(name, 1); + cmdp->cmdtype = CMDNORMAL; + cmdp->param.index = idx; + INTON; + goto success; + } + + /* We failed. If there was an entry for this command, delete it */ + if (cmdp && updatetbl) + delete_cmd_entry(); + if (act & DO_ERR) + sh_warnx("%s: %s", name, errmsg(e, E_EXEC)); + entry->cmdtype = CMDUNKNOWN; + return; + +builtin_success: + if (!updatetbl) { + entry->cmdtype = CMDBUILTIN; + entry->u.cmd = bcmd; + return; + } + INTOFF; + cmdp = cmdlookup(name, 1); + cmdp->cmdtype = CMDBUILTIN; + cmdp->param.cmd = bcmd; + INTON; +success: + cmdp->rehash = 0; + entry->cmdtype = cmdp->cmdtype; + entry->u = cmdp->param; +} + + + +/* + * Search the table of builtin commands. + */ + +struct builtincmd * +find_builtin(const char *name) +{ + struct builtincmd *bp; + + bp = bsearch( + &name, builtincmd, NUMBUILTINS, sizeof(struct builtincmd), + pstrcmp + ); + return bp; +} + + + +/* + * Called when a cd is done. Marks all commands so the next time they + * are executed they will be rehashed. + */ + +void +hashcd(void) +{ + struct tblentry **pp; + struct tblentry *cmdp; + + for (pp = cmdtable ; pp < &cmdtable[CMDTABLESIZE] ; pp++) { + for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { + if (cmdp->cmdtype == CMDNORMAL || ( + cmdp->cmdtype == CMDBUILTIN && + !(cmdp->param.cmd->flags & BUILTIN_REGULAR) && + builtinloc > 0 + )) + cmdp->rehash = 1; + } + } +} + + + +/* + * Fix command hash table when PATH changed. + * Called before PATH is changed. The argument is the new value of PATH; + * pathval() still returns the old value at this point. + * Called with interrupts off. + */ + +void +changepath(const char *newval) +{ + const char *old, *new; + int idx; + int firstchange; + int bltin; + + old = pathval(); + new = newval; + firstchange = 9999; /* assume no change */ + idx = 0; + bltin = -1; + for (;;) { + if (*old != *new) { + firstchange = idx; + if ((*old == '\0' && *new == ':') + || (*old == ':' && *new == '\0')) + firstchange++; + old = new; /* ignore subsequent differences */ + } + if (*new == '\0') + break; + if (*new == '%' && bltin < 0 && prefix(new + 1, "builtin")) + bltin = idx; + if (*new == ':') { + idx++; + } + new++, old++; + } + if (builtinloc < 0 && bltin >= 0) + builtinloc = bltin; /* zap builtins */ + if (builtinloc >= 0 && bltin < 0) + firstchange = 0; + clearcmdentry(firstchange); + builtinloc = bltin; +} + + +/* + * Clear out command entries. The argument specifies the first entry in + * PATH which has changed. + */ + +STATIC void +clearcmdentry(int firstchange) +{ + struct tblentry **tblp; + struct tblentry **pp; + struct tblentry *cmdp; + + INTOFF; + for (tblp = cmdtable ; tblp < &cmdtable[CMDTABLESIZE] ; tblp++) { + pp = tblp; + while ((cmdp = *pp) != NULL) { + if ((cmdp->cmdtype == CMDNORMAL && + cmdp->param.index >= firstchange) + || (cmdp->cmdtype == CMDBUILTIN && + builtinloc >= firstchange)) { + *pp = cmdp->next; + ckfree(cmdp); + } else { + pp = &cmdp->next; + } + } + } + INTON; +} + + + +/* + * Locate a command in the command hash table. If "add" is nonzero, + * add the command to the table if it is not already present. The + * variable "lastcmdentry" is set to point to the address of the link + * pointing to the entry, so that delete_cmd_entry can delete the + * entry. + * + * Interrupts must be off if called with add != 0. + */ + +struct tblentry **lastcmdentry; + + +STATIC struct tblentry * +cmdlookup(const char *name, int add) +{ + unsigned int hashval; + const char *p; + struct tblentry *cmdp; + struct tblentry **pp; + + p = name; + hashval = (unsigned char)*p << 4; + while (*p) + hashval += (unsigned char)*p++; + hashval &= 0x7FFF; + pp = &cmdtable[hashval % CMDTABLESIZE]; + for (cmdp = *pp ; cmdp ; cmdp = cmdp->next) { + if (equal(cmdp->cmdname, name)) + break; + pp = &cmdp->next; + } + if (add && cmdp == NULL) { + cmdp = *pp = ckmalloc(sizeof (struct tblentry) - ARB + + strlen(name) + 1); + cmdp->next = NULL; + cmdp->cmdtype = CMDUNKNOWN; + strcpy(cmdp->cmdname, name); + } + lastcmdentry = pp; + return cmdp; +} + +/* + * Delete the command entry returned on the last lookup. + */ + +STATIC void +delete_cmd_entry(void) +{ + struct tblentry *cmdp; + + INTOFF; + cmdp = *lastcmdentry; + *lastcmdentry = cmdp->next; + if (cmdp->cmdtype == CMDFUNCTION) + freefunc(cmdp->param.func); + ckfree(cmdp); + INTON; +} + + + +#ifdef notdef +void +getcmdentry(char *name, struct cmdentry *entry) +{ + struct tblentry *cmdp = cmdlookup(name, 0); + + if (cmdp) { + entry->u = cmdp->param; + entry->cmdtype = cmdp->cmdtype; + } else { + entry->cmdtype = CMDUNKNOWN; + entry->u.index = 0; + } +} +#endif + + +/* + * Add a new command entry, replacing any existing command entry for + * the same name - except special builtins. + */ + +STATIC void +addcmdentry(char *name, struct cmdentry *entry) +{ + struct tblentry *cmdp; + + cmdp = cmdlookup(name, 1); + if (cmdp->cmdtype == CMDFUNCTION) { + freefunc(cmdp->param.func); + } + cmdp->cmdtype = entry->cmdtype; + cmdp->param = entry->u; + cmdp->rehash = 0; +} + + +/* + * Define a shell function. + */ + +void +defun(union node *func) +{ + struct cmdentry entry; + + INTOFF; + entry.cmdtype = CMDFUNCTION; + entry.u.func = copyfunc(func); + addcmdentry(func->ndefun.text, &entry); + INTON; +} + + +/* + * Delete a function if it exists. + */ + +void +unsetfunc(const char *name) +{ + struct tblentry *cmdp; + + if ((cmdp = cmdlookup(name, 0)) != NULL && + cmdp->cmdtype == CMDFUNCTION) + delete_cmd_entry(); +} + +/* + * Locate and print what a word is... + */ + +int +typecmd(int argc, char **argv) +{ + int i; + int err = 0; + + for (i = 1; i < argc; i++) { + err |= describe_command(out1, argv[i], NULL, 1); + } + return err; +} + +STATIC int +describe_command(out, command, path, verbose) + struct output *out; + char *command; + const char *path; + int verbose; +{ + struct cmdentry entry; + struct tblentry *cmdp; + const struct alias *ap; + + path = path ?: pathval(); + + if (verbose) { + outstr(command, out); + } + + /* First look at the keywords */ + if (findkwd(command)) { + outstr(verbose ? " is a shell keyword" : command, out); + goto out; + } + + /* Then look at the aliases */ + if ((ap = lookupalias(command, 0)) != NULL) { + if (verbose) { + outfmt(out, " is an alias for %s", ap->val); + } else { + outstr("alias ", out); + printalias(ap); + return 0; + } + goto out; + } + + /* Then check if it is a tracked alias */ + if ((cmdp = cmdlookup(command, 0)) != NULL) { + entry.cmdtype = cmdp->cmdtype; + entry.u = cmdp->param; + } else { + /* Finally use brute force */ + find_command(command, &entry, DO_ABS, path); + } + + switch (entry.cmdtype) { + case CMDNORMAL: { + int j = entry.u.index; + char *p; + if (j == -1) { + p = command; + } else { + do { + p = padvance(&path, command); + stunalloc(p); + } while (--j >= 0); + } + if (verbose) { + outfmt( + out, " is%s %s", + cmdp ? " a tracked alias for" : nullstr, p + ); + } else { + outstr(p, out); + } + break; + } + + case CMDFUNCTION: + if (verbose) { + outstr(" is a shell function", out); + } else { + outstr(command, out); + } + break; + + case CMDBUILTIN: + if (verbose) { + outfmt( + out, " is a %sshell builtin", + entry.u.cmd->flags & BUILTIN_SPECIAL ? + "special " : nullstr + ); + } else { + outstr(command, out); + } + break; + + default: + if (verbose) { + outstr(": not found\n", out); + } + return 127; + } + +out: + outc('\n', out); + return 0; +} + +int +commandcmd(argc, argv) + int argc; + char **argv; +{ + char *cmd; + int c; + enum { + VERIFY_BRIEF = 1, + VERIFY_VERBOSE = 2, + } verify = 0; + const char *path = NULL; + + while ((c = nextopt("pvV")) != '\0') + if (c == 'V') + verify |= VERIFY_VERBOSE; + else if (c == 'v') + verify |= VERIFY_BRIEF; +#ifdef DEBUG + else if (c != 'p') + abort(); +#endif + else + path = defpath; + + cmd = *argptr; + if (verify && cmd) + return describe_command(out1, cmd, path, verify - VERIFY_BRIEF); + + return 0; +} diff --git a/shells/dash/files/src/exec.h b/shells/dash/files/src/exec.h new file mode 100644 index 0000000000000..9ccb305fef806 --- /dev/null +++ b/shells/dash/files/src/exec.h @@ -0,0 +1,77 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)exec.h 8.3 (Berkeley) 6/8/95 + */ + +/* values of cmdtype */ +#define CMDUNKNOWN -1 /* no entry in table for command */ +#define CMDNORMAL 0 /* command is an executable program */ +#define CMDFUNCTION 1 /* command is a shell function */ +#define CMDBUILTIN 2 /* command is a shell builtin */ + + +struct cmdentry { + int cmdtype; + union param { + int index; + const struct builtincmd *cmd; + struct funcnode *func; + } u; +}; + + +/* action to find_command() */ +#define DO_ERR 0x01 /* prints errors */ +#define DO_ABS 0x02 /* checks absolute paths */ +#define DO_NOFUNC 0x04 /* don't return shell functions, for command */ +#define DO_ALTPATH 0x08 /* using alternate path */ +#define DO_ALTBLTIN 0x20 /* %builtin in alt. path */ + +extern const char *pathopt; /* set by padvance */ + +void shellexec(char **, const char *, int) + __attribute__((__noreturn__)); +char *padvance(const char **, const char *); +int hashcmd(int, char **); +void find_command(char *, struct cmdentry *, int, const char *); +struct builtincmd *find_builtin(const char *); +void hashcd(void); +void changepath(const char *); +#ifdef notdef +void getcmdentry(char *, struct cmdentry *); +#endif +void defun(union node *); +void unsetfunc(const char *); +int typecmd(int, char **); +int commandcmd(int, char **); diff --git a/shells/dash/files/src/expand.c b/shells/dash/files/src/expand.c new file mode 100644 index 0000000000000..11fd7b73f9e85 --- /dev/null +++ b/shells/dash/files/src/expand.c @@ -0,0 +1,1729 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#ifdef HAVE_GETPWNAM +#include +#endif +#include +#include +#include +#include +#include +#include +#ifdef HAVE_GLOB +#include +#endif +#include + +/* + * Routines to expand arguments to commands. We have to deal with + * backquotes, shell variables, and file metacharacters. + */ + +#include "shell.h" +#include "main.h" +#include "nodes.h" +#include "eval.h" +#include "expand.h" +#include "syntax.h" +#include "parser.h" +#include "jobs.h" +#include "options.h" +#include "var.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#include "show.h" +#include "system.h" + +/* + * _rmescape() flags + */ +#define RMESCAPE_ALLOC 0x1 /* Allocate a new string */ +#define RMESCAPE_GLOB 0x2 /* Add backslashes for glob */ +#define RMESCAPE_GROW 0x8 /* Grow strings instead of stalloc */ +#define RMESCAPE_HEAP 0x10 /* Malloc strings instead of stalloc */ + +/* Add CTLESC when necessary. */ +#define QUOTES_ESC (EXP_FULL | EXP_CASE | EXP_QPAT) +/* Do not skip NUL characters. */ +#define QUOTES_KEEPNUL EXP_TILDE + +/* + * Structure specifying which parts of the string should be searched + * for IFS characters. + */ + +struct ifsregion { + struct ifsregion *next; /* next region in list */ + int begoff; /* offset of start of region */ + int endoff; /* offset of end of region */ + int nulonly; /* search for nul bytes only */ +}; + +/* output of current string */ +static char *expdest; +/* list of back quote expressions */ +static struct nodelist *argbackq; +/* first struct in list of ifs regions */ +static struct ifsregion ifsfirst; +/* last struct in list */ +static struct ifsregion *ifslastp; +/* holds expanded arg list */ +static struct arglist exparg; + +STATIC void argstr(char *, int); +STATIC char *exptilde(char *, char *, int); +STATIC void expbackq(union node *, int); +STATIC const char *subevalvar(char *, char *, int, int, int, int, int); +STATIC char *evalvar(char *, int); +STATIC size_t strtodest(const char *, const char *, int); +STATIC void memtodest(const char *, size_t, const char *, int); +STATIC ssize_t varvalue(char *, int, int); +STATIC void expandmeta(struct strlist *, int); +#ifdef HAVE_GLOB +STATIC void addglob(const glob_t *); +#else +STATIC void expmeta(char *, char *); +STATIC struct strlist *expsort(struct strlist *); +STATIC struct strlist *msort(struct strlist *, int); +#endif +STATIC void addfname(char *); +STATIC int patmatch(char *, const char *); +#ifndef HAVE_FNMATCH +STATIC int pmatch(const char *, const char *); +#else +#define pmatch(a, b) !fnmatch((a), (b), 0) +#endif +STATIC int cvtnum(intmax_t); +STATIC size_t esclen(const char *, const char *); +STATIC char *scanleft(char *, char *, char *, char *, int, int); +STATIC char *scanright(char *, char *, char *, char *, int, int); +STATIC void varunset(const char *, const char *, const char *, int) + __attribute__((__noreturn__)); + + +/* + * Prepare a pattern for a glob(3) call. + * + * Returns an stalloced string. + */ + +STATIC inline char * +preglob(const char *pattern, int flag) { + flag |= RMESCAPE_GLOB; + return _rmescapes((char *)pattern, flag); +} + + +STATIC size_t +esclen(const char *start, const char *p) { + size_t esc = 0; + + while (p > start && *--p == (char)CTLESC) { + esc++; + } + return esc; +} + + +static inline const char *getpwhome(const char *name) +{ +#ifdef HAVE_GETPWNAM + struct passwd *pw = getpwnam(name); + return pw ? pw->pw_dir : 0; +#else + return 0; +#endif +} + + +/* + * Perform variable substitution and command substitution on an argument, + * placing the resulting list of arguments in arglist. If EXP_FULL is true, + * perform splitting and file name expansion. When arglist is NULL, perform + * here document expansion. + */ + +void +expandarg(union node *arg, struct arglist *arglist, int flag) +{ + struct strlist *sp; + char *p; + + argbackq = arg->narg.backquote; + STARTSTACKSTR(expdest); + argstr(arg->narg.text, flag); + p = _STPUTC('\0', expdest); + expdest = p - 1; + if (arglist == NULL) { + /* here document expanded */ + goto out; + } + p = grabstackstr(p); + exparg.lastp = &exparg.list; + /* + * TODO - EXP_REDIR + */ + if (flag & EXP_FULL) { + ifsbreakup(p, &exparg); + *exparg.lastp = NULL; + exparg.lastp = &exparg.list; + expandmeta(exparg.list, flag); + } else { + sp = (struct strlist *)stalloc(sizeof (struct strlist)); + sp->text = p; + *exparg.lastp = sp; + exparg.lastp = &sp->next; + } + *exparg.lastp = NULL; + if (exparg.list) { + *arglist->lastp = exparg.list; + arglist->lastp = exparg.lastp; + } + +out: + ifsfree(); +} + + + +/* + * Perform variable and command substitution. If EXP_FULL is set, output CTLESC + * characters to allow for further processing. Otherwise treat + * $@ like $* since no splitting will be performed. + */ + +STATIC void +argstr(char *p, int flag) +{ + static const char spclchars[] = { + '=', + ':', + CTLQUOTEMARK, + CTLENDVAR, + CTLESC, + CTLVAR, + CTLBACKQ, + CTLENDARI, + 0 + }; + const char *reject = spclchars; + int c; + int breakall = (flag & (EXP_WORD | EXP_QUOTED)) == EXP_WORD; + int inquotes; + size_t length; + int startloc; + + if (!(flag & EXP_VARTILDE)) { + reject += 2; + } else if (flag & EXP_VARTILDE2) { + reject++; + } + inquotes = 0; + length = 0; + if (flag & EXP_TILDE) { + char *q; + + flag &= ~EXP_TILDE; +tilde: + q = p; + if (*q == '~') + p = exptilde(p, q, flag); + } +start: + startloc = expdest - (char *)stackblock(); + for (;;) { + length += strcspn(p + length, reject); + c = (signed char)p[length]; + if (c && (!(c & 0x80) || c == CTLENDARI)) { + /* c == '=' || c == ':' || c == CTLENDARI */ + length++; + } + if (length > 0) { + int newloc; + expdest = stnputs(p, length, expdest); + newloc = expdest - (char *)stackblock(); + if (breakall && !inquotes && newloc > startloc) { + recordregion(startloc, newloc, 0); + } + startloc = newloc; + } + p += length + 1; + length = 0; + + switch (c) { + case '\0': + goto breakloop; + case '=': + if (flag & EXP_VARTILDE2) { + p--; + continue; + } + flag |= EXP_VARTILDE2; + reject++; + /* fall through */ + case ':': + /* + * sort of a hack - expand tildes in variable + * assignments (after the first '=' and after ':'s). + */ + if (*--p == '~') { + goto tilde; + } + continue; + } + + switch (c) { + case CTLENDVAR: /* ??? */ + goto breakloop; + case CTLQUOTEMARK: + inquotes ^= EXP_QUOTED; + /* "$@" syntax adherence hack */ + if (inquotes && !memcmp(p, dolatstr + 1, + DOLATSTRLEN - 1)) { + p = evalvar(p + 1, flag | inquotes) + 1; + goto start; + } +addquote: + if (flag & QUOTES_ESC) { + p--; + length++; + startloc++; + } + break; + case CTLESC: + startloc++; + length++; + + /* + * Quoted parameter expansion pattern: remove quote + * unless inside inner quotes or we have a literal + * backslash. + */ + if (((flag | inquotes) & (EXP_QPAT | EXP_QUOTED)) == + EXP_QPAT && *p != '\\') + break; + + goto addquote; + case CTLVAR: + p = evalvar(p, flag | inquotes); + goto start; + case CTLBACKQ: + expbackq(argbackq->n, flag | inquotes); + argbackq = argbackq->next; + goto start; + case CTLENDARI: + p--; + expari(flag | inquotes); + goto start; + } + } +breakloop: + ; +} + +STATIC char * +exptilde(char *startp, char *p, int flag) +{ + signed char c; + char *name; + const char *home; + int quotes = flag & QUOTES_ESC; + + name = p + 1; + + while ((c = *++p) != '\0') { + switch(c) { + case CTLESC: + return (startp); + case CTLQUOTEMARK: + return (startp); + case ':': + if (flag & EXP_VARTILDE) + goto done; + break; + case '/': + case CTLENDVAR: + goto done; + } + } +done: + *p = '\0'; + if (*name == '\0') { + home = lookupvar(homestr); + } else { + home = getpwhome(name); + } + if (!home || !*home) + goto lose; + *p = c; + strtodest(home, SQSYNTAX, quotes); + return (p); +lose: + *p = c; + return (startp); +} + + +void +removerecordregions(int endoff) +{ + if (ifslastp == NULL) + return; + + if (ifsfirst.endoff > endoff) { + while (ifsfirst.next != NULL) { + struct ifsregion *ifsp; + INTOFF; + ifsp = ifsfirst.next->next; + ckfree(ifsfirst.next); + ifsfirst.next = ifsp; + INTON; + } + if (ifsfirst.begoff > endoff) + ifslastp = NULL; + else { + ifslastp = &ifsfirst; + ifsfirst.endoff = endoff; + } + return; + } + + ifslastp = &ifsfirst; + while (ifslastp->next && ifslastp->next->begoff < endoff) + ifslastp=ifslastp->next; + while (ifslastp->next != NULL) { + struct ifsregion *ifsp; + INTOFF; + ifsp = ifslastp->next->next; + ckfree(ifslastp->next); + ifslastp->next = ifsp; + INTON; + } + if (ifslastp->endoff > endoff) + ifslastp->endoff = endoff; +} + + +/* + * Expand arithmetic expression. Backup to start of expression, + * evaluate, place result in (backed up) result, adjust string position. + */ +void +expari(int flag) +{ + struct stackmark sm; + char *p, *start; + int begoff; + int len; + intmax_t result; + + /* ifsfree(); */ + + /* + * This routine is slightly over-complicated for + * efficiency. Next we scan backwards looking for the + * start of arithmetic. + */ + start = stackblock(); + p = expdest; + pushstackmark(&sm, p - start); + *--p = '\0'; + p--; + do { + int esc; + + while (*p != (char)CTLARI) { + p--; +#ifdef DEBUG + if (p < start) { + sh_error("missing CTLARI (shouldn't happen)"); + } +#endif + } + + esc = esclen(start, p); + if (!(esc % 2)) { + break; + } + + p -= esc + 1; + } while (1); + + begoff = p - start; + + removerecordregions(begoff); + + expdest = p; + + if (likely(flag & QUOTES_ESC)) + rmescapes(p + 1); + + result = arith(p + 1); + popstackmark(&sm); + + len = cvtnum(result); + + if (likely(!(flag & EXP_QUOTED))) + recordregion(begoff, begoff + len, 0); +} + + +/* + * Expand stuff in backwards quotes. + */ + +STATIC void +expbackq(union node *cmd, int flag) +{ + struct backcmd in; + int i; + char buf[128]; + char *p; + char *dest; + int startloc; + char const *syntax = flag & EXP_QUOTED ? DQSYNTAX : BASESYNTAX; + struct stackmark smark; + + INTOFF; + startloc = expdest - (char *)stackblock(); + pushstackmark(&smark, startloc); + evalbackcmd(cmd, (struct backcmd *) &in); + popstackmark(&smark); + + p = in.buf; + i = in.nleft; + if (i == 0) + goto read; + for (;;) { + memtodest(p, i, syntax, flag & QUOTES_ESC); +read: + if (in.fd < 0) + break; + do { + i = read(in.fd, buf, sizeof buf); + } while (i < 0 && errno == EINTR); + TRACE(("expbackq: read returns %d\n", i)); + if (i <= 0) + break; + p = buf; + } + + if (in.buf) + ckfree(in.buf); + if (in.fd >= 0) { + close(in.fd); + back_exitstatus = waitforjob(in.jp); + } + INTON; + + /* Eat all trailing newlines */ + dest = expdest; + for (; dest > (char *)stackblock() && dest[-1] == '\n';) + STUNPUTC(dest); + expdest = dest; + + if (!(flag & EXP_QUOTED)) + recordregion(startloc, dest - (char *)stackblock(), 0); + TRACE(("evalbackq: size=%d: \"%.*s\"\n", + (dest - (char *)stackblock()) - startloc, + (dest - (char *)stackblock()) - startloc, + stackblock() + startloc)); +} + + +STATIC char * +scanleft( + char *startp, char *rmesc, char *rmescend, char *str, int quotes, + int zero +) { + char *loc; + char *loc2; + char c; + + loc = startp; + loc2 = rmesc; + do { + int match; + const char *s = loc2; + c = *loc2; + if (zero) { + *loc2 = '\0'; + s = rmesc; + } + match = pmatch(str, s); + *loc2 = c; + if (match) + return loc; + if (quotes && *loc == (char)CTLESC) + loc++; + loc++; + loc2++; + } while (c); + return 0; +} + + +STATIC char * +scanright( + char *startp, char *rmesc, char *rmescend, char *str, int quotes, + int zero +) { + int esc = 0; + char *loc; + char *loc2; + + for (loc = str - 1, loc2 = rmescend; loc >= startp; loc2--) { + int match; + char c = *loc2; + const char *s = loc2; + if (zero) { + *loc2 = '\0'; + s = rmesc; + } + match = pmatch(str, s); + *loc2 = c; + if (match) + return loc; + loc--; + if (quotes) { + if (--esc < 0) { + esc = esclen(startp, loc); + } + if (esc % 2) { + esc--; + loc--; + } + } + } + return 0; +} + +STATIC const char * +subevalvar(char *p, char *str, int strloc, int subtype, int startloc, int varflags, int flag) +{ + int quotes = flag & QUOTES_ESC; + char *startp; + char *loc; + struct nodelist *saveargbackq = argbackq; + int amount; + char *rmesc, *rmescend; + int zero; + char *(*scan)(char *, char *, char *, char *, int , int); + + argstr(p, EXP_TILDE | (subtype != VSASSIGN && subtype != VSQUESTION ? + (flag & (EXP_QUOTED | EXP_QPAT) ? + EXP_QPAT : EXP_CASE) : 0)); + STPUTC('\0', expdest); + argbackq = saveargbackq; + startp = stackblock() + startloc; + + switch (subtype) { + case VSASSIGN: + setvar(str, startp, 0); + amount = startp - expdest; + STADJUST(amount, expdest); + return startp; + + case VSQUESTION: + varunset(p, str, startp, varflags); + /* NOTREACHED */ + } + + subtype -= VSTRIMRIGHT; +#ifdef DEBUG + if (subtype < 0 || subtype > 3) + abort(); +#endif + + rmesc = startp; + rmescend = stackblock() + strloc; + if (quotes) { + rmesc = _rmescapes(startp, RMESCAPE_ALLOC | RMESCAPE_GROW); + if (rmesc != startp) { + rmescend = expdest; + startp = stackblock() + startloc; + } + } + rmescend--; + str = stackblock() + strloc; + preglob(str, 0); + + /* zero = subtype == VSTRIMLEFT || subtype == VSTRIMLEFTMAX */ + zero = subtype >> 1; + /* VSTRIMLEFT/VSTRIMRIGHTMAX -> scanleft */ + scan = (subtype & 1) ^ zero ? scanleft : scanright; + + loc = scan(startp, rmesc, rmescend, str, quotes, zero); + if (loc) { + if (zero) { + memmove(startp, loc, str - loc); + loc = startp + (str - loc) - 1; + } + *loc = '\0'; + amount = loc - expdest; + STADJUST(amount, expdest); + } + return loc; +} + + +/* + * Expand a variable, and return a pointer to the next character in the + * input string. + */ +STATIC char * +evalvar(char *p, int flag) +{ + int subtype; + int varflags; + char *var; + int patloc; + int c; + int startloc; + ssize_t varlen; + int easy; + int quoted; + + varflags = *p++; + subtype = varflags & VSTYPE; + + if (!subtype) + sh_error("Bad substitution"); + + quoted = flag & EXP_QUOTED; + var = p; + easy = (!quoted || (*var == '@' && shellparam.nparam)); + startloc = expdest - (char *)stackblock(); + p = strchr(p, '=') + 1; + +again: + varlen = varvalue(var, varflags, flag); + if (varflags & VSNUL) + varlen--; + + if (subtype == VSPLUS) { + varlen = -1 - varlen; + goto vsplus; + } + + if (subtype == VSMINUS) { +vsplus: + if (varlen < 0) { + argstr(p, flag | EXP_TILDE | EXP_WORD); + goto end; + } + if (easy) + goto record; + goto end; + } + + if (subtype == VSASSIGN || subtype == VSQUESTION) { + if (varlen < 0) { + if (subevalvar(p, var, 0, subtype, startloc, + varflags, flag & ~QUOTES_ESC)) { + varflags &= ~VSNUL; + /* + * Remove any recorded regions beyond + * start of variable + */ + removerecordregions(startloc); + goto again; + } + goto end; + } + if (easy) + goto record; + goto end; + } + + if (varlen < 0 && uflag) + varunset(p, var, 0, 0); + + if (subtype == VSLENGTH) { + cvtnum(varlen > 0 ? varlen : 0); + goto record; + } + + if (subtype == VSNORMAL) { + if (!easy) + goto end; +record: + recordregion(startloc, expdest - (char *)stackblock(), quoted); + goto end; + } + +#ifdef DEBUG + switch (subtype) { + case VSTRIMLEFT: + case VSTRIMLEFTMAX: + case VSTRIMRIGHT: + case VSTRIMRIGHTMAX: + break; + default: + abort(); + } +#endif + + if (varlen >= 0) { + /* + * Terminate the string and start recording the pattern + * right after it + */ + STPUTC('\0', expdest); + patloc = expdest - (char *)stackblock(); + if (subevalvar(p, NULL, patloc, subtype, + startloc, varflags, flag) == 0) { + int amount = expdest - ( + (char *)stackblock() + patloc - 1 + ); + STADJUST(-amount, expdest); + } + /* Remove any recorded regions beyond start of variable */ + removerecordregions(startloc); + goto record; + } + +end: + if (subtype != VSNORMAL) { /* skip to end of alternative */ + int nesting = 1; + for (;;) { + if ((c = (signed char)*p++) == CTLESC) + p++; + else if (c == CTLBACKQ) { + if (varlen >= 0) + argbackq = argbackq->next; + } else if (c == CTLVAR) { + if ((*p++ & VSTYPE) != VSNORMAL) + nesting++; + } else if (c == CTLENDVAR) { + if (--nesting == 0) + break; + } + } + } + return p; +} + + +/* + * Put a string on the stack. + */ + +STATIC void +memtodest(const char *p, size_t len, const char *syntax, int quotes) { + char *q; + + if (unlikely(!len)) + return; + + q = makestrspace(len * 2, expdest); + + do { + int c = (signed char)*p++; + if (c) { + if ((quotes & QUOTES_ESC) && + ((syntax[c] == CCTL) || + (((quotes & EXP_FULL) || syntax != BASESYNTAX) && + syntax[c] == CBACK))) + USTPUTC(CTLESC, q); + } else if (!(quotes & QUOTES_KEEPNUL)) + continue; + USTPUTC(c, q); + } while (--len); + + expdest = q; +} + + +STATIC size_t +strtodest(p, syntax, quotes) + const char *p; + const char *syntax; + int quotes; +{ + size_t len = strlen(p); + memtodest(p, len, syntax, quotes); + return len; +} + + + +/* + * Add the value of a specialized variable to the stack string. + */ + +STATIC ssize_t +varvalue(char *name, int varflags, int flags) +{ + int num; + char *p; + int i; + int sep; + char sepc; + char **ap; + char const *syntax; + int quoted = flags & EXP_QUOTED; + int subtype = varflags & VSTYPE; + int discard = subtype == VSPLUS || subtype == VSLENGTH; + int quotes = (discard ? 0 : (flags & QUOTES_ESC)) | QUOTES_KEEPNUL; + ssize_t len = 0; + + sep = quoted ? ((flags & EXP_FULL) << CHAR_BIT) : 0; + syntax = quoted ? DQSYNTAX : BASESYNTAX; + + switch (*name) { + case '$': + num = rootpid; + goto numvar; + case '?': + num = exitstatus; + goto numvar; + case '#': + num = shellparam.nparam; + goto numvar; + case '!': + num = backgndpid; + if (num == 0) + return -1; +numvar: + len = cvtnum(num); + break; + case '-': + p = makestrspace(NOPTS, expdest); + for (i = NOPTS - 1; i >= 0; i--) { + if (optlist[i]) { + USTPUTC(optletters[i], p); + len++; + } + } + expdest = p; + break; + case '@': + if (sep) + goto param; + /* fall through */ + case '*': + sep = ifsset() ? ifsval()[0] : ' '; +param: + if (!(ap = shellparam.p)) + return -1; + sepc = sep; + while ((p = *ap++)) { + len += strtodest(p, syntax, quotes); + + if (*ap && sep) { + len++; + memtodest(&sepc, 1, syntax, quotes); + } + } + break; + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + num = atoi(name); + if (num < 0 || num > shellparam.nparam) + return -1; + p = num ? shellparam.p[num - 1] : arg0; + goto value; + default: + p = lookupvar(name); +value: + if (!p) + return -1; + + len = strtodest(p, syntax, quotes); + break; + } + + if (discard) + STADJUST(-len, expdest); + return len; +} + + + +/* + * Record the fact that we have to scan this region of the + * string for IFS characters. + */ + +void +recordregion(int start, int end, int nulonly) +{ + struct ifsregion *ifsp; + + if (ifslastp == NULL) { + ifsp = &ifsfirst; + } else { + INTOFF; + ifsp = (struct ifsregion *)ckmalloc(sizeof (struct ifsregion)); + ifsp->next = NULL; + ifslastp->next = ifsp; + INTON; + } + ifslastp = ifsp; + ifslastp->begoff = start; + ifslastp->endoff = end; + ifslastp->nulonly = nulonly; +} + + + +/* + * Break the argument string into pieces based upon IFS and add the + * strings to the argument list. The regions of the string to be + * searched for IFS characters have been stored by recordregion. + */ +void +ifsbreakup(char *string, struct arglist *arglist) +{ + struct ifsregion *ifsp; + struct strlist *sp; + char *start; + char *p; + char *q; + const char *ifs, *realifs; + int ifsspc; + int nulonly; + + + start = string; + if (ifslastp != NULL) { + ifsspc = 0; + nulonly = 0; + realifs = ifsset() ? ifsval() : defifs; + ifsp = &ifsfirst; + do { + p = string + ifsp->begoff; + nulonly = ifsp->nulonly; + ifs = nulonly ? nullstr : realifs; + ifsspc = 0; + while (p < string + ifsp->endoff) { + q = p; + if (*p == (char)CTLESC) + p++; + if (strchr(ifs, *p)) { + if (!nulonly) + ifsspc = (strchr(defifs, *p) != NULL); + /* Ignore IFS whitespace at start */ + if (q == start && ifsspc) { + p++; + start = p; + continue; + } + *q = '\0'; + sp = (struct strlist *)stalloc(sizeof *sp); + sp->text = start; + *arglist->lastp = sp; + arglist->lastp = &sp->next; + p++; + if (!nulonly) { + for (;;) { + if (p >= string + ifsp->endoff) { + break; + } + q = p; + if (*p == (char)CTLESC) + p++; + if (strchr(ifs, *p) == NULL ) { + p = q; + break; + } else if (strchr(defifs, *p) == NULL) { + if (ifsspc) { + p++; + ifsspc = 0; + } else { + p = q; + break; + } + } else + p++; + } + } + start = p; + } else + p++; + } + } while ((ifsp = ifsp->next) != NULL); + if (nulonly) + goto add; + } + + if (!*start) + return; + +add: + sp = (struct strlist *)stalloc(sizeof *sp); + sp->text = start; + *arglist->lastp = sp; + arglist->lastp = &sp->next; +} + +void ifsfree(void) +{ + struct ifsregion *p = ifsfirst.next; + + if (!p) + goto out; + + INTOFF; + do { + struct ifsregion *ifsp; + ifsp = p->next; + ckfree(p); + p = ifsp; + } while (p); + ifsfirst.next = NULL; + INTON; + +out: + ifslastp = NULL; +} + + + +/* + * Expand shell metacharacters. At this point, the only control characters + * should be escapes. The results are stored in the list exparg. + */ + +#ifdef HAVE_GLOB +STATIC void +expandmeta(str, flag) + struct strlist *str; + int flag; +{ + /* TODO - EXP_REDIR */ + + while (str) { + const char *p; + glob_t pglob; + int i; + + if (fflag) + goto nometa; + INTOFF; + p = preglob(str->text, RMESCAPE_ALLOC | RMESCAPE_HEAP); + i = glob(p, GLOB_NOMAGIC, 0, &pglob); + if (p != str->text) + ckfree(p); + switch (i) { + case 0: + if (!(pglob.gl_flags & GLOB_MAGCHAR)) + goto nometa2; + addglob(&pglob); + globfree(&pglob); + INTON; + break; + case GLOB_NOMATCH: +nometa2: + globfree(&pglob); + INTON; +nometa: + *exparg.lastp = str; + rmescapes(str->text); + exparg.lastp = &str->next; + break; + default: /* GLOB_NOSPACE */ + sh_error("Out of space"); + } + str = str->next; + } +} + + +/* + * Add the result of glob(3) to the list. + */ + +STATIC void +addglob(pglob) + const glob_t *pglob; +{ + char **p = pglob->gl_pathv; + + do { + addfname(*p); + } while (*++p); +} + + +#else /* HAVE_GLOB */ +STATIC char *expdir; + + +STATIC void +expandmeta(struct strlist *str, int flag) +{ + static const char metachars[] = { + '*', '?', '[', 0 + }; + /* TODO - EXP_REDIR */ + + while (str) { + struct strlist **savelastp; + struct strlist *sp; + char *p; + + if (fflag) + goto nometa; + if (!strpbrk(str->text, metachars)) + goto nometa; + savelastp = exparg.lastp; + + INTOFF; + p = preglob(str->text, RMESCAPE_ALLOC | RMESCAPE_HEAP); + { + int i = strlen(str->text); + expdir = ckmalloc(i < 2048 ? 2048 : i); /* XXX */ + } + + expmeta(expdir, p); + ckfree(expdir); + if (p != str->text) + ckfree(p); + INTON; + if (exparg.lastp == savelastp) { + /* + * no matches + */ +nometa: + *exparg.lastp = str; + rmescapes(str->text); + exparg.lastp = &str->next; + } else { + *exparg.lastp = NULL; + *savelastp = sp = expsort(*savelastp); + while (sp->next != NULL) + sp = sp->next; + exparg.lastp = &sp->next; + } + str = str->next; + } +} + + +/* + * Do metacharacter (i.e. *, ?, [...]) expansion. + */ + +STATIC void +expmeta(char *enddir, char *name) +{ + char *p; + const char *cp; + char *start; + char *endname; + int metaflag; + struct stat64 statb; + DIR *dirp; + struct dirent *dp; + int atend; + int matchdot; + int esc; + + metaflag = 0; + start = name; + for (p = name; esc = 0, *p; p += esc + 1) { + if (*p == '*' || *p == '?') + metaflag = 1; + else if (*p == '[') { + char *q = p + 1; + if (*q == '!') + q++; + for (;;) { + if (*q == '\\') + q++; + if (*q == '/' || *q == '\0') + break; + if (*++q == ']') { + metaflag = 1; + break; + } + } + } else { + if (*p == '\\') + esc++; + if (p[esc] == '/') { + if (metaflag) + break; + start = p + esc + 1; + } + } + } + if (metaflag == 0) { /* we've reached the end of the file name */ + if (enddir != expdir) + metaflag++; + p = name; + do { + if (*p == '\\') + p++; + *enddir++ = *p; + } while (*p++); + if (metaflag == 0 || lstat64(expdir, &statb) >= 0) + addfname(expdir); + return; + } + endname = p; + if (name < start) { + p = name; + do { + if (*p == '\\') + p++; + *enddir++ = *p++; + } while (p < start); + } + if (enddir == expdir) { + cp = "."; + } else if (enddir == expdir + 1 && *expdir == '/') { + cp = "/"; + } else { + cp = expdir; + enddir[-1] = '\0'; + } + if ((dirp = opendir(cp)) == NULL) + return; + if (enddir != expdir) + enddir[-1] = '/'; + if (*endname == 0) { + atend = 1; + } else { + atend = 0; + *endname = '\0'; + endname += esc + 1; + } + matchdot = 0; + p = start; + if (*p == '\\') + p++; + if (*p == '.') + matchdot++; + while (! int_pending() && (dp = readdir(dirp)) != NULL) { + if (dp->d_name[0] == '.' && ! matchdot) + continue; + if (pmatch(start, dp->d_name)) { + if (atend) { + scopy(dp->d_name, enddir); + addfname(expdir); + } else { + for (p = enddir, cp = dp->d_name; + (*p++ = *cp++) != '\0';) + continue; + p[-1] = '/'; + expmeta(p, endname); + } + } + } + closedir(dirp); + if (! atend) + endname[-esc - 1] = esc ? '\\' : '/'; +} +#endif /* HAVE_GLOB */ + + +/* + * Add a file name to the list. + */ + +STATIC void +addfname(char *name) +{ + struct strlist *sp; + + sp = (struct strlist *)stalloc(sizeof *sp); + sp->text = sstrdup(name); + *exparg.lastp = sp; + exparg.lastp = &sp->next; +} + + +#ifndef HAVE_GLOB +/* + * Sort the results of file name expansion. It calculates the number of + * strings to sort and then calls msort (short for merge sort) to do the + * work. + */ + +STATIC struct strlist * +expsort(struct strlist *str) +{ + int len; + struct strlist *sp; + + len = 0; + for (sp = str ; sp ; sp = sp->next) + len++; + return msort(str, len); +} + + +STATIC struct strlist * +msort(struct strlist *list, int len) +{ + struct strlist *p, *q = NULL; + struct strlist **lpp; + int half; + int n; + + if (len <= 1) + return list; + half = len >> 1; + p = list; + for (n = half ; --n >= 0 ; ) { + q = p; + p = p->next; + } + q->next = NULL; /* terminate first half of list */ + q = msort(list, half); /* sort first half of list */ + p = msort(p, len - half); /* sort second half */ + lpp = &list; + for (;;) { + if (strcmp(p->text, q->text) < 0) { + *lpp = p; + lpp = &p->next; + if ((p = *lpp) == NULL) { + *lpp = q; + break; + } + } else { + *lpp = q; + lpp = &q->next; + if ((q = *lpp) == NULL) { + *lpp = p; + break; + } + } + } + return list; +} +#endif + + +/* + * Returns true if the pattern matches the string. + */ + +STATIC inline int +patmatch(char *pattern, const char *string) +{ + return pmatch(preglob(pattern, 0), string); +} + + +#ifndef HAVE_FNMATCH +STATIC int ccmatch(const char *p, int chr, const char **r) +{ + static const struct class { + char name[10]; + int (*fn)(int); + } classes[] = { + { .name = ":alnum:]", .fn = isalnum }, + { .name = ":cntrl:]", .fn = iscntrl }, + { .name = ":lower:]", .fn = islower }, + { .name = ":space:]", .fn = isspace }, + { .name = ":alpha:]", .fn = isalpha }, + { .name = ":digit:]", .fn = isdigit }, + { .name = ":print:]", .fn = isprint }, + { .name = ":upper:]", .fn = isupper }, + { .name = ":blank:]", .fn = isblank }, + { .name = ":graph:]", .fn = isgraph }, + { .name = ":punct:]", .fn = ispunct }, + { .name = ":xdigit:]", .fn = isxdigit }, + }; + const struct class *class, *end; + + end = classes + sizeof(classes) / sizeof(classes[0]); + for (class = classes; class < end; class++) { + const char *q; + + q = prefix(p, class->name); + if (!q) + continue; + *r = q; + return class->fn(chr); + } + + *r = 0; + return 0; +} + +STATIC int +pmatch(const char *pattern, const char *string) +{ + const char *p, *q; + char c; + + p = pattern; + q = string; + for (;;) { + switch (c = *p++) { + case '\0': + goto breakloop; + case '\\': + if (*p) { + c = *p++; + } + goto dft; + case '?': + if (*q++ == '\0') + return 0; + break; + case '*': + c = *p; + while (c == '*') + c = *++p; + if (c != '\\' && c != '?' && c != '*' && c != '[') { + while (*q != c) { + if (*q == '\0') + return 0; + q++; + } + } + do { + if (pmatch(p, q)) + return 1; + } while (*q++ != '\0'); + return 0; + case '[': { + const char *startp; + int invert, found; + char chr; + + startp = p; + invert = 0; + if (*p == '!') { + invert++; + p++; + } + found = 0; + chr = *q++; + if (chr == '\0') + return 0; + c = *p++; + do { + if (!c) { + p = startp; + c = *p; + goto dft; + } + if (c == '[') { + const char *r; + + found |= !!ccmatch(p, chr, &r); + if (r) { + p = r; + continue; + } + } else if (c == '\\') + c = *p++; + if (*p == '-' && p[1] != ']') { + p++; + if (*p == '\\') + p++; + if (chr >= c && chr <= *p) + found = 1; + p++; + } else { + if (chr == c) + found = 1; + } + } while ((c = *p++) != ']'); + if (found == invert) + return 0; + break; + } +dft: default: + if (*q++ != c) + return 0; + break; + } + } +breakloop: + if (*q != '\0') + return 0; + return 1; +} +#endif + + + +/* + * Remove any CTLESC characters from a string. + */ + +char * +_rmescapes(char *str, int flag) +{ + char *p, *q, *r; + unsigned inquotes; + int notescaped; + int globbing; + + p = strpbrk(str, qchars); + if (!p) { + return str; + } + q = p; + r = str; + if (flag & RMESCAPE_ALLOC) { + size_t len = p - str; + size_t fulllen = len + strlen(p) + 1; + + if (flag & RMESCAPE_GROW) { + int strloc = str - (char *)stackblock(); + + r = makestrspace(fulllen, expdest); + str = (char *)stackblock() + strloc; + p = str + len; + } else if (flag & RMESCAPE_HEAP) { + r = ckmalloc(fulllen); + } else { + r = stalloc(fulllen); + } + q = r; + if (len > 0) { + q = mempcpy(q, str, len); + } + } + inquotes = 0; + globbing = flag & RMESCAPE_GLOB; + notescaped = globbing; + while (*p) { + if (*p == (char)CTLQUOTEMARK) { + inquotes = ~inquotes; + p++; + notescaped = globbing; + continue; + } + if (*p == (char)CTLESC) { + p++; + if (notescaped) + *q++ = '\\'; + } else if (*p == '\\' && !inquotes) { + /* naked back slash */ + notescaped = 0; + goto copy; + } + notescaped = globbing; +copy: + *q++ = *p++; + } + *q = '\0'; + if (flag & RMESCAPE_GROW) { + expdest = r; + STADJUST(q - r + 1, expdest); + } + return r; +} + + + +/* + * See if a pattern matches in a case statement. + */ + +int +casematch(union node *pattern, char *val) +{ + struct stackmark smark; + int result; + + setstackmark(&smark); + argbackq = pattern->narg.backquote; + STARTSTACKSTR(expdest); + argstr(pattern->narg.text, EXP_TILDE | EXP_CASE); + STACKSTRNUL(expdest); + ifsfree(); + result = patmatch(stackblock(), val); + popstackmark(&smark); + return result; +} + +/* + * Our own itoa(). + */ + +STATIC int +cvtnum(intmax_t num) +{ + int len = max_int_length(sizeof(num)); + + expdest = makestrspace(len, expdest); + len = fmtstr(expdest, len, "%" PRIdMAX, num); + STADJUST(len, expdest); + return len; +} + +STATIC void +varunset(const char *end, const char *var, const char *umsg, int varflags) +{ + const char *msg; + const char *tail; + + tail = nullstr; + msg = "parameter not set"; + if (umsg) { + if (*end == (char)CTLENDVAR) { + if (varflags & VSNUL) + tail = " or null"; + } else + msg = umsg; + } + sh_error("%.*s: %s%s", end - var - 1, var, msg, tail); +} + +#ifdef mkinit + +INCLUDE "expand.h" + +RESET { + ifsfree(); +} + +#endif diff --git a/shells/dash/files/src/expand.h b/shells/dash/files/src/expand.h new file mode 100644 index 0000000000000..6a90f67e2182f --- /dev/null +++ b/shells/dash/files/src/expand.h @@ -0,0 +1,83 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)expand.h 8.2 (Berkeley) 5/4/95 + */ + +#include + +struct strlist { + struct strlist *next; + char *text; +}; + + +struct arglist { + struct strlist *list; + struct strlist **lastp; +}; + +/* + * expandarg() flags + */ +#define EXP_FULL 0x1 /* perform word splitting & file globbing */ +#define EXP_TILDE 0x2 /* do normal tilde expansion */ +#define EXP_VARTILDE 0x4 /* expand tildes in an assignment */ +#define EXP_REDIR 0x8 /* file glob for a redirection (1 match only) */ +#define EXP_CASE 0x10 /* keeps quotes around for CASE pattern */ +#define EXP_QPAT 0x20 /* pattern in quoted parameter expansion */ +#define EXP_VARTILDE2 0x40 /* expand tildes after colons only */ +#define EXP_WORD 0x80 /* expand word in parameter expansion */ +#define EXP_QUOTED 0x100 /* expand word in double quotes */ + + +union node; +void expandarg(union node *, struct arglist *, int); +void expari(int); +#define rmescapes(p) _rmescapes((p), 0) +char *_rmescapes(char *, int); +int casematch(union node *, char *); +void recordregion(int, int, int); +void removerecordregions(int); +void ifsbreakup(char *, struct arglist *); +void ifsfree(void); + +/* From arith.y */ +intmax_t arith(const char *); +int expcmd(int , char **); +#ifdef USE_LEX +void arith_lex_reset(void); +#else +#define arith_lex_reset() +#endif +int yylex(void); diff --git a/shells/dash/files/src/hetio.h b/shells/dash/files/src/hetio.h new file mode 100644 index 0000000000000..c3e915c80297e --- /dev/null +++ b/shells/dash/files/src/hetio.h @@ -0,0 +1,22 @@ +/* + * Termios command line History and Editting for NetBSD sh (ash) + * Copyright (c) 1999 + * Main code: Adam Rogoyski + * Etc: Dave Cinege + * + * You may use this code as you wish, so long as the original author(s) + * are attributed in any redistributions of the source code. + * This code is 'as is' with no warranty. + * This code may safely be consumed by a BSD or GPL license. + * + * v 0.5 19990328 Initial release + * + * Future plans: Simple file and path name completion. (like BASH) + * + */ + +void hetio_init(void); +int hetio_read_input(int fd); +void hetio_reset_term(void); + +extern int hetio_inter; diff --git a/shells/dash/files/src/histedit.c b/shells/dash/files/src/histedit.c new file mode 100644 index 0000000000000..b27d6294ce08e --- /dev/null +++ b/shells/dash/files/src/histedit.c @@ -0,0 +1,494 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#ifdef HAVE_PATHS_H +#include +#endif +#include +#include +#include +/* + * Editline and history functions (and glue). + */ +#include "shell.h" +#include "parser.h" +#include "var.h" +#include "options.h" +#include "main.h" +#include "output.h" +#include "mystring.h" +#include "error.h" +#ifndef SMALL +#include "myhistedit.h" +#include "eval.h" +#include "memalloc.h" + +#define MAXHISTLOOPS 4 /* max recursions through fc */ +#define DEFEDITOR "ed" /* default editor *should* be $EDITOR */ + +History *hist; /* history cookie */ +EditLine *el; /* editline cookie */ +int displayhist; +static FILE *el_in, *el_out; + +STATIC const char *fc_replace(const char *, char *, char *); + +#ifdef DEBUG +extern FILE *tracefile; +#endif + +/* + * Set history and editing status. Called whenever the status may + * have changed (figures out what to do). + */ +void +histedit(void) +{ + FILE *el_err; + +#define editing (Eflag || Vflag) + + if (iflag) { + if (!hist) { + /* + * turn history on + */ + INTOFF; + hist = history_init(); + INTON; + + if (hist != NULL) + sethistsize(histsizeval()); + else + out2str("sh: can't initialize history\n"); + } + if (editing && !el && isatty(0)) { /* && isatty(2) ??? */ + /* + * turn editing on + */ + INTOFF; + if (el_in == NULL) + el_in = fdopen(0, "r"); + if (el_out == NULL) + el_out = fdopen(2, "w"); + if (el_in == NULL || el_out == NULL) + goto bad; + el_err = el_out; +#if DEBUG + if (tracefile) + el_err = tracefile; +#endif + el = el_init(arg0, el_in, el_out, el_err); + if (el != NULL) { + if (hist) + el_set(el, EL_HIST, history, hist); + el_set(el, EL_PROMPT, getprompt); + } else { +bad: + out2str("sh: can't initialize editing\n"); + } + INTON; + } else if (!editing && el) { + INTOFF; + el_end(el); + el = NULL; + INTON; + } + if (el) { + if (Vflag) + el_set(el, EL_EDITOR, "vi"); + else if (Eflag) + el_set(el, EL_EDITOR, "emacs"); + el_source(el, NULL); + } + } else { + INTOFF; + if (el) { /* no editing if not interactive */ + el_end(el); + el = NULL; + } + if (hist) { + history_end(hist); + hist = NULL; + } + INTON; + } +} + + +void +sethistsize(const char *hs) +{ + int histsize; + HistEvent he; + + if (hist != NULL) { + if (hs == NULL || *hs == '\0' || + (histsize = atoi(hs)) < 0) + histsize = 100; + history(hist, &he, H_SETSIZE, histsize); + } +} + +void +setterm(const char *term) +{ + if (el != NULL && term != NULL) + if (el_set(el, EL_TERMINAL, term) != 0) { + outfmt(out2, "sh: Can't set terminal type %s\n", term); + outfmt(out2, "sh: Using dumb terminal settings.\n"); + } +} + +/* + * This command is provided since POSIX decided to standardize + * the Korn shell fc command. Oh well... + */ +int +histcmd(int argc, char **argv) +{ + int ch; + const char *editor = NULL; + HistEvent he; + int lflg = 0, nflg = 0, rflg = 0, sflg = 0; + int i, retval; + const char *firststr, *laststr; + int first, last, direction; + char *pat = NULL, *repl; /* ksh "fc old=new" crap */ + static int active = 0; + struct jmploc jmploc; + struct jmploc *volatile savehandler; + char editfile[MAXPATHLEN + 1]; + FILE *efp; +#ifdef __GNUC__ + /* Avoid longjmp clobbering */ + (void) &editor; + (void) &lflg; + (void) &nflg; + (void) &rflg; + (void) &sflg; + (void) &firststr; + (void) &laststr; + (void) &pat; + (void) &repl; + (void) &efp; + (void) &argc; + (void) &argv; +#endif + + if (hist == NULL) + sh_error("history not active"); + + if (argc == 1) + sh_error("missing history argument"); + +#ifdef __GLIBC__ + optind = 0; +#else + optreset = 1; optind = 1; /* initialize getopt */ +#endif + while (not_fcnumber(argv[optind]) && + (ch = getopt(argc, argv, ":e:lnrs")) != -1) + switch ((char)ch) { + case 'e': + editor = optionarg; + break; + case 'l': + lflg = 1; + break; + case 'n': + nflg = 1; + break; + case 'r': + rflg = 1; + break; + case 's': + sflg = 1; + break; + case ':': + sh_error("option -%c expects argument", optopt); + /* NOTREACHED */ + case '?': + default: + sh_error("unknown option: -%c", optopt); + /* NOTREACHED */ + } + argc -= optind, argv += optind; + + /* + * If executing... + */ + if (lflg == 0 || editor || sflg) { + lflg = 0; /* ignore */ + editfile[0] = '\0'; + /* + * Catch interrupts to reset active counter and + * cleanup temp files. + */ + if (setjmp(jmploc.loc)) { + active = 0; + if (*editfile) + unlink(editfile); + handler = savehandler; + longjmp(handler->loc, 1); + } + savehandler = handler; + handler = &jmploc; + if (++active > MAXHISTLOOPS) { + active = 0; + displayhist = 0; + sh_error("called recursively too many times"); + } + /* + * Set editor. + */ + if (sflg == 0) { + if (editor == NULL && + (editor = bltinlookup("FCEDIT")) == NULL && + (editor = bltinlookup("EDITOR")) == NULL) + editor = DEFEDITOR; + if (editor[0] == '-' && editor[1] == '\0') { + sflg = 1; /* no edit */ + editor = NULL; + } + } + } + + /* + * If executing, parse [old=new] now + */ + if (lflg == 0 && argc > 0 && + ((repl = strchr(argv[0], '=')) != NULL)) { + pat = argv[0]; + *repl++ = '\0'; + argc--, argv++; + } + /* + * determine [first] and [last] + */ + switch (argc) { + case 0: + firststr = lflg ? "-16" : "-1"; + laststr = "-1"; + break; + case 1: + firststr = argv[0]; + laststr = lflg ? "-1" : argv[0]; + break; + case 2: + firststr = argv[0]; + laststr = argv[1]; + break; + default: + sh_error("too many args"); + /* NOTREACHED */ + } + /* + * Turn into event numbers. + */ + first = str_to_event(firststr, 0); + last = str_to_event(laststr, 1); + + if (rflg) { + i = last; + last = first; + first = i; + } + /* + * XXX - this should not depend on the event numbers + * always increasing. Add sequence numbers or offset + * to the history element in next (diskbased) release. + */ + direction = first < last ? H_PREV : H_NEXT; + + /* + * If editing, grab a temp file. + */ + if (editor) { + int fd; + INTOFF; /* easier */ + sprintf(editfile, "%s_shXXXXXX", _PATH_TMP); + if ((fd = mkstemp(editfile)) < 0) + sh_error("can't create temporary file %s", editfile); + if ((efp = fdopen(fd, "w")) == NULL) { + close(fd); + sh_error("can't allocate stdio buffer for temp"); + } + } + + /* + * Loop through selected history events. If listing or executing, + * do it now. Otherwise, put into temp file and call the editor + * after. + * + * The history interface needs rethinking, as the following + * convolutions will demonstrate. + */ + history(hist, &he, H_FIRST); + retval = history(hist, &he, H_NEXT_EVENT, first); + for (;retval != -1; retval = history(hist, &he, direction)) { + if (lflg) { + if (!nflg) + out1fmt("%5d ", he.num); + out1str(he.str); + } else { + const char *s = pat ? + fc_replace(he.str, pat, repl) : he.str; + + if (sflg) { + if (displayhist) { + out2str(s); + } + + evalstring(strcpy(stalloc(strlen(s) + 1), s), + 0); + if (displayhist && hist) { + /* + * XXX what about recursive and + * relative histnums. + */ + history(hist, &he, H_ENTER, s); + } + } else + fputs(s, efp); + } + /* + * At end? (if we were to lose last, we'd sure be + * messed up). + */ + if (he.num == last) + break; + } + if (editor) { + char *editcmd; + + fclose(efp); + editcmd = stalloc(strlen(editor) + strlen(editfile) + 2); + sprintf(editcmd, "%s %s", editor, editfile); + /* XXX - should use no JC command */ + evalstring(editcmd, 0); + INTON; + readcmdfile(editfile); /* XXX - should read back - quick tst */ + unlink(editfile); + } + + if (lflg == 0 && active > 0) + --active; + if (displayhist) + displayhist = 0; + return 0; +} + +STATIC const char * +fc_replace(const char *s, char *p, char *r) +{ + char *dest; + int plen = strlen(p); + + STARTSTACKSTR(dest); + while (*s) { + if (*s == *p && strncmp(s, p, plen) == 0) { + while (*r) + STPUTC(*r++, dest); + s += plen; + *p = '\0'; /* so no more matches */ + } else + STPUTC(*s++, dest); + } + STACKSTRNUL(dest); + dest = grabstackstr(dest); + + return (dest); +} + +int +not_fcnumber(char *s) +{ + if (s == NULL) + return 0; + if (*s == '-') + s++; + return (!is_number(s)); +} + +int +str_to_event(const char *str, int last) +{ + HistEvent he; + const char *s = str; + int relative = 0; + int i, retval; + + retval = history(hist, &he, H_FIRST); + switch (*s) { + case '-': + relative = 1; + /*FALLTHROUGH*/ + case '+': + s++; + } + if (is_number(s)) { + i = atoi(s); + if (relative) { + while (retval != -1 && i--) { + retval = history(hist, &he, H_NEXT); + } + if (retval == -1) + retval = history(hist, &he, H_LAST); + } else { + retval = history(hist, &he, H_NEXT_EVENT, i); + if (retval == -1) { + /* + * the notion of first and last is + * backwards to that of the history package + */ + retval = history(hist, &he, + last ? H_FIRST : H_LAST); + } + } + if (retval == -1) + sh_error("history number %s not found (internal error)", + str); + } else { + /* + * pattern + */ + retval = history(hist, &he, H_PREV_STR, str); + if (retval == -1) + sh_error("history pattern not found: %s", str); + } + return (he.num); +} +#endif diff --git a/shells/dash/files/src/init.h b/shells/dash/files/src/init.h new file mode 100644 index 0000000000000..e026e86862fed --- /dev/null +++ b/shells/dash/files/src/init.h @@ -0,0 +1,39 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)init.h 8.2 (Berkeley) 5/4/95 + */ + +void init(void); +void reset(void); +void initshellproc(void); diff --git a/shells/dash/files/src/input.c b/shells/dash/files/src/input.c new file mode 100644 index 0000000000000..d31c45bb4a5e8 --- /dev/null +++ b/shells/dash/files/src/input.c @@ -0,0 +1,532 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include /* defines BUFSIZ */ +#include +#include +#include +#include + +/* + * This file implements the input routines used by the parser. + */ + +#include "eval.h" +#include "shell.h" +#include "redir.h" +#include "syntax.h" +#include "input.h" +#include "output.h" +#include "options.h" +#include "memalloc.h" +#include "error.h" +#include "alias.h" +#include "parser.h" +#include "main.h" +#ifndef SMALL +#include "myhistedit.h" +#endif + +#ifdef HETIO +#include "hetio.h" +#endif + +#define EOF_NLEFT -99 /* value of parsenleft when EOF pushed back */ +#define IBUFSIZ (BUFSIZ + 1) + +MKINIT +struct strpush { + struct strpush *prev; /* preceding string on stack */ + char *prevstring; + int prevnleft; + struct alias *ap; /* if push was associated with an alias */ + char *string; /* remember the string since it may change */ +}; + +/* + * The parsefile structure pointed to by the global variable parsefile + * contains information about the current file being read. + */ + +MKINIT +struct parsefile { + struct parsefile *prev; /* preceding file on stack */ + int linno; /* current line */ + int fd; /* file descriptor (or -1 if string) */ + int nleft; /* number of chars left in this line */ + int lleft; /* number of chars left in this buffer */ + char *nextc; /* next char in buffer */ + char *buf; /* input buffer */ + struct strpush *strpush; /* for pushing strings at this level */ + struct strpush basestrpush; /* so pushing one is fast */ +}; + + +int plinno = 1; /* input line number */ +int parsenleft; /* copy of parsefile->nleft */ +MKINIT int parselleft; /* copy of parsefile->lleft */ +char *parsenextc; /* copy of parsefile->nextc */ +MKINIT struct parsefile basepf; /* top level input file */ +MKINIT char basebuf[IBUFSIZ]; /* buffer for top level input file */ +struct parsefile *parsefile = &basepf; /* current input file */ +int whichprompt; /* 1 == PS1, 2 == PS2 */ + +#ifndef SMALL +EditLine *el; /* cookie for editline package */ +#endif + +STATIC void pushfile(void); +static int preadfd(void); +static void setinputfd(int fd, int push); + +#ifdef mkinit +INCLUDE +INCLUDE "input.h" +INCLUDE "error.h" + +INIT { + basepf.nextc = basepf.buf = basebuf; +} + +RESET { + parselleft = parsenleft = 0; /* clear input buffer */ + popallfiles(); +} +#endif + + +/* + * Read a character from the script, returning PEOF on end of file. + * Nul characters in the input are silently discarded. + */ + +int +pgetc(void) +{ + return pgetc_macro(); +} + + +/* + * Same as pgetc(), but ignores PEOA. + */ + +int +pgetc2() +{ + int c; + do { + c = pgetc_macro(); + } while (c == PEOA); + return c; +} + + +static int +preadfd(void) +{ + int nr; + char *buf = parsefile->buf; + parsenextc = buf; + +retry: +#ifndef SMALL + if (parsefile->fd == 0 && el) { + static const char *rl_cp; + static int el_len; + + if (rl_cp == NULL) + rl_cp = el_gets(el, &el_len); + if (rl_cp == NULL) + nr = 0; + else { + nr = el_len; + if (nr > IBUFSIZ - 1) + nr = IBUFSIZ - 1; + memcpy(buf, rl_cp, nr); + if (nr != el_len) { + el_len -= nr; + rl_cp += nr; + } else + rl_cp = 0; + } + + } else +#endif + +#ifdef HETIO + nr = hetio_read_input(parsefile->fd); + if (nr == -255) +#endif + nr = read(parsefile->fd, buf, IBUFSIZ - 1); + + + if (nr < 0) { + if (errno == EINTR) + goto retry; + if (parsefile->fd == 0 && errno == EWOULDBLOCK) { + int flags = fcntl(0, F_GETFL, 0); + if (flags >= 0 && flags & O_NONBLOCK) { + flags &=~ O_NONBLOCK; + if (fcntl(0, F_SETFL, flags) >= 0) { + out2str("sh: turning off NDELAY mode\n"); + goto retry; + } + } + } + } + return nr; +} + +/* + * Refill the input buffer and return the next input character: + * + * 1) If a string was pushed back on the input, pop it; + * 2) If an EOF was pushed back (parsenleft == EOF_NLEFT) or we are reading + * from a string so we can't refill the buffer, return EOF. + * 3) If the is more stuff in this buffer, use it else call read to fill it. + * 4) Process input up to the next newline, deleting nul characters. + */ + +int +preadbuffer(void) +{ + char *q; + int more; +#ifndef SMALL + int something; +#endif + char savec; + + while (unlikely(parsefile->strpush)) { + if ( + parsenleft == -1 && parsefile->strpush->ap && + parsenextc[-1] != ' ' && parsenextc[-1] != '\t' + ) { + return PEOA; + } + popstring(); + if (--parsenleft >= 0) + return (signed char)*parsenextc++; + } + if (unlikely(parsenleft == EOF_NLEFT || parsefile->buf == NULL)) + return PEOF; + flushout(&output); +#ifdef FLUSHERR + flushout(&errout); +#endif + + more = parselleft; + if (more <= 0) { +again: + if ((more = preadfd()) <= 0) { + parselleft = parsenleft = EOF_NLEFT; + return PEOF; + } + } + + q = parsenextc; + + /* delete nul characters */ +#ifndef SMALL + something = 0; +#endif + for (;;) { + int c; + + more--; + c = *q; + + if (!c) + memmove(q, q + 1, more); + else { + q++; + + if (c == '\n') { + parsenleft = q - parsenextc - 1; + break; + } + +#ifndef SMALL + switch (c) { + default: + something = 1; + /* fall through */ + case '\t': + case ' ': + break; + } +#endif + } + + if (more <= 0) { + parsenleft = q - parsenextc - 1; + if (parsenleft < 0) + goto again; + break; + } + } + parselleft = more; + + savec = *q; + *q = '\0'; + +#ifndef SMALL + if (parsefile->fd == 0 && hist && something) { + HistEvent he; + INTOFF; + history(hist, &he, whichprompt == 1? H_ENTER : H_APPEND, + parsenextc); + INTON; + } +#endif + + if (vflag) { + out2str(parsenextc); +#ifdef FLUSHERR + flushout(out2); +#endif + } + + *q = savec; + + return (signed char)*parsenextc++; +} + +/* + * Undo the last call to pgetc. Only one character may be pushed back. + * PEOF may be pushed back. + */ + +void +pungetc(void) +{ + parsenleft++; + parsenextc--; +} + +/* + * Push a string back onto the input at this current parsefile level. + * We handle aliases this way. + */ +void +pushstring(char *s, void *ap) +{ + struct strpush *sp; + size_t len; + + len = strlen(s); + INTOFF; +/*dprintf("*** calling pushstring: %s, %d\n", s, len);*/ + if (parsefile->strpush) { + sp = ckmalloc(sizeof (struct strpush)); + sp->prev = parsefile->strpush; + parsefile->strpush = sp; + } else + sp = parsefile->strpush = &(parsefile->basestrpush); + sp->prevstring = parsenextc; + sp->prevnleft = parsenleft; + sp->ap = (struct alias *)ap; + if (ap) { + ((struct alias *)ap)->flag |= ALIASINUSE; + sp->string = s; + } + parsenextc = s; + parsenleft = len; + INTON; +} + +void +popstring(void) +{ + struct strpush *sp = parsefile->strpush; + + INTOFF; + if (sp->ap) { + if (parsenextc[-1] == ' ' || parsenextc[-1] == '\t') { + checkkwd |= CHKALIAS; + } + if (sp->string != sp->ap->val) { + ckfree(sp->string); + } + sp->ap->flag &= ~ALIASINUSE; + if (sp->ap->flag & ALIASDEAD) { + unalias(sp->ap->name); + } + } + parsenextc = sp->prevstring; + parsenleft = sp->prevnleft; +/*dprintf("*** calling popstring: restoring to '%s'\n", parsenextc);*/ + parsefile->strpush = sp->prev; + if (sp != &(parsefile->basestrpush)) + ckfree(sp); + INTON; +} + +/* + * Set the input to take input from a file. If push is set, push the + * old input onto the stack first. + */ + +int +setinputfile(const char *fname, int flags) +{ + int fd; + + INTOFF; + if ((fd = open(fname, O_RDONLY)) < 0) { + if (flags & INPUT_NOFILE_OK) + goto out; + exitstatus = 127; + exerror(EXERROR, "Can't open %s", fname); + } + if (fd < 10) + fd = savefd(fd, fd); + setinputfd(fd, flags & INPUT_PUSH_FILE); +out: + INTON; + return fd; +} + + +/* + * Like setinputfile, but takes an open file descriptor. Call this with + * interrupts off. + */ + +static void +setinputfd(int fd, int push) +{ + if (push) { + pushfile(); + parsefile->buf = 0; + } + parsefile->fd = fd; + if (parsefile->buf == NULL) + parsefile->buf = ckmalloc(IBUFSIZ); + parselleft = parsenleft = 0; + plinno = 1; +} + + +/* + * Like setinputfile, but takes input from a string. + */ + +void +setinputstring(char *string) +{ + INTOFF; + pushfile(); + parsenextc = string; + parsenleft = strlen(string); + parsefile->buf = NULL; + plinno = 1; + INTON; +} + + + +/* + * To handle the "." command, a stack of input files is used. Pushfile + * adds a new entry to the stack and popfile restores the previous level. + */ + +STATIC void +pushfile(void) +{ + struct parsefile *pf; + + parsefile->nleft = parsenleft; + parsefile->lleft = parselleft; + parsefile->nextc = parsenextc; + parsefile->linno = plinno; + pf = (struct parsefile *)ckmalloc(sizeof (struct parsefile)); + pf->prev = parsefile; + pf->fd = -1; + pf->strpush = NULL; + pf->basestrpush.prev = NULL; + parsefile = pf; +} + + +void +popfile(void) +{ + struct parsefile *pf = parsefile; + + INTOFF; + if (pf->fd >= 0) + close(pf->fd); + if (pf->buf) + ckfree(pf->buf); + while (pf->strpush) + popstring(); + parsefile = pf->prev; + ckfree(pf); + parsenleft = parsefile->nleft; + parselleft = parsefile->lleft; + parsenextc = parsefile->nextc; + plinno = parsefile->linno; + INTON; +} + + +/* + * Return to top level. + */ + +void +popallfiles(void) +{ + while (parsefile != &basepf) + popfile(); +} + + + +/* + * Close the file(s) that the shell is reading commands from. Called + * after a fork is done. + */ + +void +closescript(void) +{ + popallfiles(); + if (parsefile->fd > 0) { + close(parsefile->fd); + parsefile->fd = 0; + } +} diff --git a/shells/dash/files/src/input.h b/shells/dash/files/src/input.h new file mode 100644 index 0000000000000..50a77971ebfdf --- /dev/null +++ b/shells/dash/files/src/input.h @@ -0,0 +1,66 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)input.h 8.2 (Berkeley) 5/4/95 + */ + +/* PEOF (the end of file marker) is defined in syntax.h */ + +enum { + INPUT_PUSH_FILE = 1, + INPUT_NOFILE_OK = 2, +}; + +/* + * The input line number. Input.c just defines this variable, and saves + * and restores it when files are pushed and popped. The user of this + * package must set its value. + */ +extern int plinno; +extern int parsenleft; /* number of characters left in input buffer */ +extern char *parsenextc; /* next character in input buffer */ + +int pgetc(void); +int pgetc2(void); +int preadbuffer(void); +void pungetc(void); +void pushstring(char *, void *); +void popstring(void); +int setinputfile(const char *, int); +void setinputstring(char *); +void popfile(void); +void popallfiles(void); +void closescript(void); + +#define pgetc_macro() \ + (--parsenleft >= 0 ? (signed char)*parsenextc++ : preadbuffer()) diff --git a/shells/dash/files/src/jobs.c b/shells/dash/files/src/jobs.c new file mode 100644 index 0000000000000..dcb81c168d420 --- /dev/null +++ b/shells/dash/files/src/jobs.c @@ -0,0 +1,1504 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include +#ifdef HAVE_PATHS_H +#include +#endif +#include +#include +#ifdef BSD +#include +#include +#include +#endif +#include + +#include "shell.h" +#if JOBS +#include +#undef CEOF /* syntax.h redefines this */ +#endif +#include "redir.h" +#include "show.h" +#include "main.h" +#include "parser.h" +#include "nodes.h" +#include "jobs.h" +#include "options.h" +#include "trap.h" +#include "syntax.h" +#include "input.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#include "system.h" + +/* mode flags for set_curjob */ +#define CUR_DELETE 2 +#define CUR_RUNNING 1 +#define CUR_STOPPED 0 + +/* mode flags for dowait */ +#define DOWAIT_NORMAL 0 +#define DOWAIT_BLOCK 1 +#define DOWAIT_WAITCMD 2 + +/* array of jobs */ +static struct job *jobtab; +/* size of array */ +static unsigned njobs; +/* pid of last background process */ +pid_t backgndpid; + +#if JOBS +/* pgrp of shell on invocation */ +static int initialpgrp; +/* control terminal */ +static int ttyfd = -1; +#endif + +/* current job */ +static struct job *curjob; +/* number of presumed living untracked jobs */ +static int jobless; + +STATIC void set_curjob(struct job *, unsigned); +STATIC int jobno(const struct job *); +STATIC int sprint_status(char *, int, int); +STATIC void freejob(struct job *); +STATIC struct job *getjob(const char *, int); +STATIC struct job *growjobtab(void); +STATIC void forkchild(struct job *, union node *, int); +STATIC void forkparent(struct job *, union node *, int, pid_t); +STATIC int dowait(int, struct job *); +#ifdef SYSV +STATIC int onsigchild(void); +#endif +STATIC int waitproc(int, int *); +STATIC char *commandtext(union node *); +STATIC void cmdtxt(union node *); +STATIC void cmdlist(union node *, int); +STATIC void cmdputs(const char *); +STATIC void showpipe(struct job *, struct output *); +STATIC int getstatus(struct job *); + +#if JOBS +static int restartjob(struct job *, int); +static void xtcsetpgrp(int, pid_t); +#endif + +STATIC void +set_curjob(struct job *jp, unsigned mode) +{ + struct job *jp1; + struct job **jpp, **curp; + + /* first remove from list */ + jpp = curp = &curjob; + do { + jp1 = *jpp; + if (jp1 == jp) + break; + jpp = &jp1->prev_job; + } while (1); + *jpp = jp1->prev_job; + + /* Then re-insert in correct position */ + jpp = curp; + switch (mode) { + default: +#ifdef DEBUG + abort(); +#endif + case CUR_DELETE: + /* job being deleted */ + break; + case CUR_RUNNING: + /* newly created job or backgrounded job, + put after all stopped jobs. */ + do { + jp1 = *jpp; + if (!JOBS || !jp1 || jp1->state != JOBSTOPPED) + break; + jpp = &jp1->prev_job; + } while (1); + /* FALLTHROUGH */ +#if JOBS + case CUR_STOPPED: +#endif + /* newly stopped job - becomes curjob */ + jp->prev_job = *jpp; + *jpp = jp; + break; + } +} + +#if JOBS +/* + * Turn job control on and off. + * + * Note: This code assumes that the third arg to ioctl is a character + * pointer, which is true on Berkeley systems but not System V. Since + * System V doesn't have job control yet, this isn't a problem now. + * + * Called with interrupts off. + */ + +int jobctl; + +void +setjobctl(int on) +{ + int fd; + int pgrp; + + if (on == jobctl || rootshell == 0) + return; + if (on) { + int ofd; + ofd = fd = open(_PATH_TTY, O_RDWR); + if (fd < 0) { + fd += 3; + while (!isatty(fd)) + if (--fd < 0) + goto out; + } + fd = savefd(fd, ofd); + do { /* while we are in the background */ + if ((pgrp = tcgetpgrp(fd)) < 0) { +out: + sh_warnx("can't access tty; job control turned off"); + mflag = on = 0; + goto close; + } + if (pgrp == getpgrp()) + break; + killpg(0, SIGTTIN); + } while (1); + initialpgrp = pgrp; + + setsignal(SIGTSTP); + setsignal(SIGTTOU); + setsignal(SIGTTIN); + pgrp = rootpid; + setpgid(0, pgrp); + xtcsetpgrp(fd, pgrp); + } else { + /* turning job control off */ + fd = ttyfd; + pgrp = initialpgrp; + xtcsetpgrp(fd, pgrp); + setpgid(0, pgrp); + setsignal(SIGTSTP); + setsignal(SIGTTOU); + setsignal(SIGTTIN); +close: + close(fd); + fd = -1; + } + ttyfd = fd; + jobctl = on; +} +#endif + + +int +killcmd(argc, argv) + int argc; + char **argv; +{ + extern char *signal_names[]; + int signo = -1; + int list = 0; + int i; + pid_t pid; + struct job *jp; + + if (argc <= 1) { +usage: + sh_error( +"Usage: kill [-s sigspec | -signum | -sigspec] [pid | job]... or\n" +"kill -l [exitstatus]" + ); + } + + if (**++argv == '-') { + signo = decode_signal(*argv + 1, 1); + if (signo < 0) { + int c; + + while ((c = nextopt("ls:")) != '\0') + switch (c) { + default: +#ifdef DEBUG + abort(); +#endif + case 'l': + list = 1; + break; + case 's': + signo = decode_signal(optionarg, 1); + if (signo < 0) { + sh_error( + "invalid signal number or name: %s", + optionarg + ); + } + break; + } + argv = argptr; + } else + argv++; + } + + if (!list && signo < 0) + signo = SIGTERM; + + if ((signo < 0 || !*argv) ^ list) { + goto usage; + } + + if (list) { + struct output *out; + + out = out1; + if (!*argv) { + outstr("0\n", out); + for (i = 1; i < NSIG; i++) { + outfmt(out, snlfmt, signal_names[i]); + } + return 0; + } + signo = number(*argv); + if (signo > 128) + signo -= 128; + if (0 < signo && signo < NSIG) + outfmt(out, snlfmt, signal_names[signo]); + else + sh_error("invalid signal number or exit status: %s", + *argv); + return 0; + } + + i = 0; + do { + if (**argv == '%') { + jp = getjob(*argv, 0); + pid = -jp->ps[0].pid; + } else + pid = **argv == '-' ? + -number(*argv + 1) : number(*argv); + if (kill(pid, signo) != 0) { + sh_warnx("%s\n", strerror(errno)); + i = 1; + } + } while (*++argv); + + return i; +} + +STATIC int +jobno(const struct job *jp) +{ + return jp - jobtab + 1; +} + +#if JOBS +int +fgcmd(int argc, char **argv) +{ + struct job *jp; + struct output *out; + int mode; + int retval; + + mode = (**argv == 'f') ? FORK_FG : FORK_BG; + nextopt(nullstr); + argv = argptr; + out = out1; + do { + jp = getjob(*argv, 1); + if (mode == FORK_BG) { + set_curjob(jp, CUR_RUNNING); + outfmt(out, "[%d] ", jobno(jp)); + } + outstr(jp->ps->cmd, out); + showpipe(jp, out); + retval = restartjob(jp, mode); + } while (*argv && *++argv); + return retval; +} + +int bgcmd(int argc, char **argv) +#ifdef HAVE_ALIAS_ATTRIBUTE + __attribute__((__alias__("fgcmd"))); +#else +{ + return fgcmd(argc, argv); +} +#endif + + +STATIC int +restartjob(struct job *jp, int mode) +{ + struct procstat *ps; + int i; + int status; + pid_t pgid; + + INTOFF; + if (jp->state == JOBDONE) + goto out; + jp->state = JOBRUNNING; + pgid = jp->ps->pid; + if (mode == FORK_FG) + xtcsetpgrp(ttyfd, pgid); + killpg(pgid, SIGCONT); + ps = jp->ps; + i = jp->nprocs; + do { + if (WIFSTOPPED(ps->status)) { + ps->status = -1; + } + } while (ps++, --i); +out: + status = (mode == FORK_FG) ? waitforjob(jp) : 0; + INTON; + return status; +} +#endif + +STATIC int +sprint_status(char *s, int status, int sigonly) +{ + int col; + int st; + + col = 0; + st = WEXITSTATUS(status); + if (!WIFEXITED(status)) { +#if JOBS + st = WSTOPSIG(status); + if (!WIFSTOPPED(status)) +#endif + st = WTERMSIG(status); + if (sigonly) { + if (st == SIGINT || st == SIGPIPE) + goto out; +#if JOBS + if (WIFSTOPPED(status)) + goto out; +#endif + } + col = fmtstr(s, 32, "%s", strsignal(st)); +#ifdef WCOREDUMP + if (WCOREDUMP(status)) { + col += fmtstr(s + col, 16, " (core dumped)"); + } +#endif + } else if (!sigonly) { + if (st) + col = fmtstr(s, 16, "Done(%d)", st); + else + col = fmtstr(s, 16, "Done"); + } + +out: + return col; +} + +static void +showjob(struct output *out, struct job *jp, int mode) +{ + struct procstat *ps; + struct procstat *psend; + int col; + int indent; + char s[80]; + + ps = jp->ps; + + if (mode & SHOW_PGID) { + /* just output process (group) id of pipeline */ + outfmt(out, "%d\n", ps->pid); + return; + } + + col = fmtstr(s, 16, "[%d] ", jobno(jp)); + indent = col; + + if (jp == curjob) + s[col - 2] = '+'; + else if (curjob && jp == curjob->prev_job) + s[col - 2] = '-'; + + if (mode & SHOW_PID) + col += fmtstr(s + col, 16, "%d ", ps->pid); + + psend = ps + jp->nprocs; + + if (jp->state == JOBRUNNING) { + scopy("Running", s + col); + col += strlen("Running"); + } else { + int status = psend[-1].status; +#if JOBS + if (jp->state == JOBSTOPPED) + status = jp->stopstatus; +#endif + col += sprint_status(s + col, status, 0); + } + + goto start; + + do { + /* for each process */ + col = fmtstr(s, 48, " |\n%*c%d ", indent, ' ', ps->pid) - 3; + +start: + outfmt( + out, "%s%*c%s", + s, 33 - col >= 0 ? 33 - col : 0, ' ', ps->cmd + ); + if (!(mode & SHOW_PID)) { + showpipe(jp, out); + break; + } + if (++ps == psend) { + outcslow('\n', out); + break; + } + } while (1); + + jp->changed = 0; + + if (jp->state == JOBDONE) { + TRACE(("showjob: freeing job %d\n", jobno(jp))); + freejob(jp); + } +} + + +int +jobscmd(int argc, char **argv) +{ + int mode, m; + struct output *out; + + mode = 0; + while ((m = nextopt("lp"))) + if (m == 'l') + mode = SHOW_PID; + else + mode = SHOW_PGID; + + out = out1; + argv = argptr; + if (*argv) + do + showjob(out, getjob(*argv,0), mode); + while (*++argv); + else + showjobs(out, mode); + + return 0; +} + + +/* + * Print a list of jobs. If "change" is nonzero, only print jobs whose + * statuses have changed since the last call to showjobs. + */ + +void +showjobs(struct output *out, int mode) +{ + struct job *jp; + + TRACE(("showjobs(%x) called\n", mode)); + + /* If not even one one job changed, there is nothing to do */ + while (dowait(DOWAIT_NORMAL, NULL) > 0) + continue; + + for (jp = curjob; jp; jp = jp->prev_job) { + if (!(mode & SHOW_CHANGED) || jp->changed) + showjob(out, jp, mode); + } +} + +/* + * Mark a job structure as unused. + */ + +STATIC void +freejob(struct job *jp) +{ + struct procstat *ps; + int i; + + INTOFF; + for (i = jp->nprocs, ps = jp->ps ; --i >= 0 ; ps++) { + if (ps->cmd != nullstr) + ckfree(ps->cmd); + } + if (jp->ps != &jp->ps0) + ckfree(jp->ps); + jp->used = 0; + set_curjob(jp, CUR_DELETE); + INTON; +} + + + +int +waitcmd(int argc, char **argv) +{ + struct job *job; + int retval; + struct job *jp; + + nextopt(nullstr); + retval = 0; + + argv = argptr; + if (!*argv) { + /* wait for all jobs */ + for (;;) { + jp = curjob; + while (1) { + if (!jp) { + /* no running procs */ + goto out; + } + if (jp->state == JOBRUNNING) + break; + jp->waited = 1; + jp = jp->prev_job; + } + if (dowait(DOWAIT_WAITCMD, 0) <= 0) + goto sigout; + } + } + + retval = 127; + do { + if (**argv != '%') { + pid_t pid = number(*argv); + job = curjob; + goto start; + do { + if (job->ps[job->nprocs - 1].pid == pid) + break; + job = job->prev_job; +start: + if (!job) + goto repeat; + } while (1); + } else + job = getjob(*argv, 0); + /* loop until process terminated or stopped */ + while (job->state == JOBRUNNING) + if (dowait(DOWAIT_WAITCMD, 0) <= 0) + goto sigout; + job->waited = 1; + retval = getstatus(job); +repeat: + ; + } while (*++argv); + +out: + return retval; + +sigout: + retval = 128 + pendingsigs; + goto out; +} + + + +/* + * Convert a job name to a job structure. + */ + +STATIC struct job * +getjob(const char *name, int getctl) +{ + struct job *jp; + struct job *found; + const char *err_msg = "No such job: %s"; + unsigned num; + int c; + const char *p; + char *(*match)(const char *, const char *); + + jp = curjob; + p = name; + if (!p) + goto currentjob; + + if (*p != '%') + goto err; + + c = *++p; + if (!c) + goto currentjob; + + if (!p[1]) { + if (c == '+' || c == '%') { +currentjob: + err_msg = "No current job"; + goto check; + } else if (c == '-') { + if (jp) + jp = jp->prev_job; + err_msg = "No previous job"; +check: + if (!jp) + goto err; + goto gotit; + } + } + + if (is_number(p)) { + num = atoi(p); + if (num <= njobs) { + jp = jobtab + num - 1; + if (jp->used) + goto gotit; + goto err; + } + } + + match = prefix; + if (*p == '?') { + match = strstr; + p++; + } + + found = 0; + while (1) { + if (!jp) + goto err; + if (match(jp->ps[0].cmd, p)) { + if (found) + goto err; + found = jp; + err_msg = "%s: ambiguous"; + } + jp = jp->prev_job; + } + +gotit: +#if JOBS + err_msg = "job %s not created under job control"; + if (getctl && jp->jobctl == 0) + goto err; +#endif + return jp; +err: + sh_error(err_msg, name); +} + + + +/* + * Return a new job structure. + * Called with interrupts off. + */ + +struct job * +makejob(union node *node, int nprocs) +{ + int i; + struct job *jp; + + for (i = njobs, jp = jobtab ; ; jp++) { + if (--i < 0) { + jp = growjobtab(); + break; + } + if (jp->used == 0) + break; + if (jp->state != JOBDONE || !jp->waited) + continue; + if (jobctl) + continue; + freejob(jp); + break; + } + memset(jp, 0, sizeof(*jp)); +#if JOBS + if (jobctl) + jp->jobctl = 1; +#endif + jp->prev_job = curjob; + curjob = jp; + jp->used = 1; + jp->ps = &jp->ps0; + if (nprocs > 1) { + jp->ps = ckmalloc(nprocs * sizeof (struct procstat)); + } + TRACE(("makejob(0x%lx, %d) returns %%%d\n", (long)node, nprocs, + jobno(jp))); + return jp; +} + +STATIC struct job * +growjobtab(void) +{ + size_t len; + ptrdiff_t offset; + struct job *jp, *jq; + + len = njobs * sizeof(*jp); + jq = jobtab; + jp = ckrealloc(jq, len + 4 * sizeof(*jp)); + + offset = (char *)jp - (char *)jq; + if (offset) { + /* Relocate pointers */ + size_t l = len; + + jq = (struct job *)((char *)jq + l); + while (l) { + l -= sizeof(*jp); + jq--; +#define joff(p) ((struct job *)((char *)(p) + l)) +#define jmove(p) (p) = (void *)((char *)(p) + offset) + if (likely(joff(jp)->ps == &jq->ps0)) + jmove(joff(jp)->ps); + if (joff(jp)->prev_job) + jmove(joff(jp)->prev_job); + } + if (curjob) + jmove(curjob); +#undef joff +#undef jmove + } + + njobs += 4; + jobtab = jp; + jp = (struct job *)((char *)jp + len); + jq = jp + 3; + do { + jq->used = 0; + } while (--jq >= jp); + return jp; +} + + +/* + * Fork off a subshell. If we are doing job control, give the subshell its + * own process group. Jp is a job structure that the job is to be added to. + * N is the command that will be evaluated by the child. Both jp and n may + * be NULL. The mode parameter can be one of the following: + * FORK_FG - Fork off a foreground process. + * FORK_BG - Fork off a background process. + * FORK_NOJOB - Like FORK_FG, but don't give the process its own + * process group even if job control is on. + * + * When job control is turned off, background processes have their standard + * input redirected to /dev/null (except for the second and later processes + * in a pipeline). + * + * Called with interrupts off. + */ + +STATIC inline void +forkchild(struct job *jp, union node *n, int mode) +{ + int oldlvl; + + TRACE(("Child shell %d\n", getpid())); + oldlvl = shlvl; + shlvl++; + + closescript(); + clear_traps(); +#if JOBS + /* do job control only in root shell */ + jobctl = 0; + if (mode != FORK_NOJOB && jp->jobctl && !oldlvl) { + pid_t pgrp; + + if (jp->nprocs == 0) + pgrp = getpid(); + else + pgrp = jp->ps[0].pid; + /* This can fail because we are doing it in the parent also */ + (void)setpgid(0, pgrp); + if (mode == FORK_FG) + xtcsetpgrp(ttyfd, pgrp); + setsignal(SIGTSTP); + setsignal(SIGTTOU); + } else +#endif + if (mode == FORK_BG) { + ignoresig(SIGINT); + ignoresig(SIGQUIT); + if (jp->nprocs == 0) { + close(0); + if (open(_PATH_DEVNULL, O_RDONLY) != 0) + sh_error("Can't open %s", _PATH_DEVNULL); + } + } + if (!oldlvl && iflag) { + setsignal(SIGINT); + setsignal(SIGQUIT); + setsignal(SIGTERM); + } + for (jp = curjob; jp; jp = jp->prev_job) + freejob(jp); + jobless = 0; +} + +STATIC inline void +forkparent(struct job *jp, union node *n, int mode, pid_t pid) +{ + TRACE(("In parent shell: child = %d\n", pid)); + if (!jp) { + while (jobless && dowait(DOWAIT_NORMAL, 0) > 0); + jobless++; + return; + } +#if JOBS + if (mode != FORK_NOJOB && jp->jobctl) { + int pgrp; + + if (jp->nprocs == 0) + pgrp = pid; + else + pgrp = jp->ps[0].pid; + /* This can fail because we are doing it in the child also */ + (void)setpgid(pid, pgrp); + } +#endif + if (mode == FORK_BG) { + backgndpid = pid; /* set $! */ + set_curjob(jp, CUR_RUNNING); + } + if (jp) { + struct procstat *ps = &jp->ps[jp->nprocs++]; + ps->pid = pid; + ps->status = -1; + ps->cmd = nullstr; + if (jobctl && n) + ps->cmd = commandtext(n); + } +} + +int +forkshell(struct job *jp, union node *n, int mode) +{ + int pid; + + TRACE(("forkshell(%%%d, %p, %d) called\n", jobno(jp), n, mode)); + pid = fork(); + if (pid < 0) { + TRACE(("Fork failed, errno=%d", errno)); + if (jp) + freejob(jp); + sh_error("Cannot fork"); + } + if (pid == 0) + forkchild(jp, n, mode); + else + forkparent(jp, n, mode, pid); + return pid; +} + +/* + * Wait for job to finish. + * + * Under job control we have the problem that while a child process is + * running interrupts generated by the user are sent to the child but not + * to the shell. This means that an infinite loop started by an inter- + * active user may be hard to kill. With job control turned off, an + * interactive user may place an interactive program inside a loop. If + * the interactive program catches interrupts, the user doesn't want + * these interrupts to also abort the loop. The approach we take here + * is to have the shell ignore interrupt signals while waiting for a + * forground process to terminate, and then send itself an interrupt + * signal if the child process was terminated by an interrupt signal. + * Unfortunately, some programs want to do a bit of cleanup and then + * exit on interrupt; unless these processes terminate themselves by + * sending a signal to themselves (instead of calling exit) they will + * confuse this approach. + * + * Called with interrupts off. + */ + +int +waitforjob(struct job *jp) +{ + int st; + + TRACE(("waitforjob(%%%d) called\n", jobno(jp))); + while (jp->state == JOBRUNNING) { + dowait(DOWAIT_BLOCK, jp); + } + st = getstatus(jp); +#if JOBS + if (jp->jobctl) { + xtcsetpgrp(ttyfd, rootpid); + /* + * This is truly gross. + * If we're doing job control, then we did a TIOCSPGRP which + * caused us (the shell) to no longer be in the controlling + * session -- so we wouldn't have seen any ^C/SIGINT. So, we + * intuit from the subprocess exit status whether a SIGINT + * occurred, and if so interrupt ourselves. Yuck. - mycroft + */ + if (jp->sigint) + raise(SIGINT); + } +#endif + if (! JOBS || jp->state == JOBDONE) + freejob(jp); + return st; +} + + + +/* + * Wait for a process to terminate. + */ + +STATIC int +dowait(int block, struct job *job) +{ + int pid; + int status; + struct job *jp; + struct job *thisjob = NULL; + int state; + + INTOFF; + TRACE(("dowait(%d) called\n", block)); + pid = waitproc(block, &status); + TRACE(("wait returns pid %d, status=%d\n", pid, status)); + if (pid <= 0) + goto out; + + for (jp = curjob; jp; jp = jp->prev_job) { + struct procstat *sp; + struct procstat *spend; + if (jp->state == JOBDONE) + continue; + state = JOBDONE; + spend = jp->ps + jp->nprocs; + sp = jp->ps; + do { + if (sp->pid == pid) { + TRACE(("Job %d: changing status of proc %d from 0x%x to 0x%x\n", jobno(jp), pid, sp->status, status)); + sp->status = status; + thisjob = jp; + } + if (sp->status == -1) + state = JOBRUNNING; +#if JOBS + if (state == JOBRUNNING) + continue; + if (WIFSTOPPED(sp->status)) { + jp->stopstatus = sp->status; + state = JOBSTOPPED; + } +#endif + } while (++sp < spend); + if (thisjob) + goto gotjob; + } + if (!JOBS || !WIFSTOPPED(status)) + jobless--; + goto out; + +gotjob: + if (state != JOBRUNNING) { + thisjob->changed = 1; + + if (thisjob->state != state) { + TRACE(("Job %d: changing state from %d to %d\n", jobno(thisjob), thisjob->state, state)); + thisjob->state = state; +#if JOBS + if (state == JOBSTOPPED) { + set_curjob(thisjob, CUR_STOPPED); + } +#endif + } + } + +out: + INTON; + + if (thisjob && thisjob == job) { + char s[48 + 1]; + int len; + + len = sprint_status(s, status, 1); + if (len) { + s[len] = '\n'; + s[len + 1] = 0; + outstr(s, out2); + } + } + return pid; +} + + + +/* + * Do a wait system call. If job control is compiled in, we accept + * stopped processes. If block is zero, we return a value of zero + * rather than blocking. + * + * System V doesn't have a non-blocking wait system call. It does + * have a SIGCLD signal that is sent to a process when one of it's + * children dies. The obvious way to use SIGCLD would be to install + * a handler for SIGCLD which simply bumped a counter when a SIGCLD + * was received, and have waitproc bump another counter when it got + * the status of a process. Waitproc would then know that a wait + * system call would not block if the two counters were different. + * This approach doesn't work because if a process has children that + * have not been waited for, System V will send it a SIGCLD when it + * installs a signal handler for SIGCLD. What this means is that when + * a child exits, the shell will be sent SIGCLD signals continuously + * until is runs out of stack space, unless it does a wait call before + * restoring the signal handler. The code below takes advantage of + * this (mis)feature by installing a signal handler for SIGCLD and + * then checking to see whether it was called. If there are any + * children to be waited for, it will be. + * + * If neither SYSV nor BSD is defined, we don't implement nonblocking + * waits at all. In this case, the user will not be informed when + * a background process until the next time she runs a real program + * (as opposed to running a builtin command or just typing return), + * and the jobs command may give out of date information. + */ + +#ifdef SYSV +STATIC int gotsigchild; + +STATIC int onsigchild() { + gotsigchild = 1; +} +#endif + + +STATIC int +waitproc(int block, int *status) +{ + sigset_t mask, oldmask; + int flags = block == DOWAIT_BLOCK ? 0 : WNOHANG; + int err; + +#if JOBS + if (jobctl) + flags |= WUNTRACED; +#endif + + do { + gotsigchld = 0; + err = wait3(status, flags, NULL); + if (err || !block) + break; + + block = 0; + + sigfillset(&mask); + sigprocmask(SIG_SETMASK, &mask, &oldmask); + + while (!gotsigchld && !pendingsigs) + sigsuspend(&oldmask); + + sigclearmask(); + } while (gotsigchld); + + return err; +} + +/* + * return 1 if there are stopped jobs, otherwise 0 + */ +int job_warning; +int +stoppedjobs(void) +{ + struct job *jp; + int retval; + + retval = 0; + if (job_warning) + goto out; + jp = curjob; + if (jp && jp->state == JOBSTOPPED) { + out2str("You have stopped jobs.\n"); + job_warning = 2; + retval++; + } + +out: + return retval; +} + +/* + * Return a string identifying a command (to be printed by the + * jobs command). + */ + +STATIC char *cmdnextc; + +STATIC char * +commandtext(union node *n) +{ + char *name; + + STARTSTACKSTR(cmdnextc); + cmdtxt(n); + name = stackblock(); + TRACE(("commandtext: name %p, end %p\n", name, cmdnextc)); + return savestr(name); +} + + +STATIC void +cmdtxt(union node *n) +{ + union node *np; + struct nodelist *lp; + const char *p; + char s[2]; + + if (!n) + return; + switch (n->type) { + default: +#if DEBUG + abort(); +#endif + case NPIPE: + lp = n->npipe.cmdlist; + for (;;) { + cmdtxt(lp->n); + lp = lp->next; + if (!lp) + break; + cmdputs(" | "); + } + break; + case NSEMI: + p = "; "; + goto binop; + case NAND: + p = " && "; + goto binop; + case NOR: + p = " || "; +binop: + cmdtxt(n->nbinary.ch1); + cmdputs(p); + n = n->nbinary.ch2; + goto donode; + case NREDIR: + case NBACKGND: + n = n->nredir.n; + goto donode; + case NNOT: + cmdputs("!"); + n = n->nnot.com; +donode: + cmdtxt(n); + break; + case NIF: + cmdputs("if "); + cmdtxt(n->nif.test); + cmdputs("; then "); + if (n->nif.elsepart) { + cmdtxt(n->nif.ifpart); + cmdputs("; else "); + n = n->nif.elsepart; + } else { + n = n->nif.ifpart; + } + p = "; fi"; + goto dotail; + case NSUBSHELL: + cmdputs("("); + n = n->nredir.n; + p = ")"; + goto dotail; + case NWHILE: + p = "while "; + goto until; + case NUNTIL: + p = "until "; +until: + cmdputs(p); + cmdtxt(n->nbinary.ch1); + n = n->nbinary.ch2; + p = "; done"; +dodo: + cmdputs("; do "); +dotail: + cmdtxt(n); + goto dotail2; + case NFOR: + cmdputs("for "); + cmdputs(n->nfor.var); + cmdputs(" in "); + cmdlist(n->nfor.args, 1); + n = n->nfor.body; + p = "; done"; + goto dodo; + case NDEFUN: + cmdputs(n->ndefun.text); + p = "() { ... }"; + goto dotail2; + case NCMD: + cmdlist(n->ncmd.args, 1); + cmdlist(n->ncmd.redirect, 0); + break; + case NARG: + p = n->narg.text; +dotail2: + cmdputs(p); + break; + case NHERE: + case NXHERE: + p = "<<..."; + goto dotail2; + case NCASE: + cmdputs("case "); + cmdputs(n->ncase.expr->narg.text); + cmdputs(" in "); + for (np = n->ncase.cases; np; np = np->nclist.next) { + cmdtxt(np->nclist.pattern); + cmdputs(") "); + cmdtxt(np->nclist.body); + cmdputs(";; "); + } + p = "esac"; + goto dotail2; + case NTO: + p = ">"; + goto redir; + case NCLOBBER: + p = ">|"; + goto redir; + case NAPPEND: + p = ">>"; + goto redir; + case NTOFD: + p = ">&"; + goto redir; + case NFROM: + p = "<"; + goto redir; + case NFROMFD: + p = "<&"; + goto redir; + case NFROMTO: + p = "<>"; +redir: + s[0] = n->nfile.fd + '0'; + s[1] = '\0'; + cmdputs(s); + cmdputs(p); + if (n->type == NTOFD || n->type == NFROMFD) { + s[0] = n->ndup.dupfd + '0'; + p = s; + goto dotail2; + } else { + n = n->nfile.fname; + goto donode; + } + } +} + +STATIC void +cmdlist(union node *np, int sep) +{ + for (; np; np = np->narg.next) { + if (!sep) + cmdputs(spcstr); + cmdtxt(np); + if (sep && np->narg.next) + cmdputs(spcstr); + } +} + + +STATIC void +cmdputs(const char *s) +{ + const char *p, *str; + char cc[2] = " "; + char *nextc; + signed char c; + int subtype = 0; + int quoted = 0; + static const char vstype[VSTYPE + 1][4] = { + "", "}", "-", "+", "?", "=", + "%", "%%", "#", "##", + }; + + nextc = makestrspace((strlen(s) + 1) * 8, cmdnextc); + p = s; + while ((c = *p++) != 0) { + str = 0; + switch (c) { + case CTLESC: + c = *p++; + break; + case CTLVAR: + subtype = *p++; + if ((subtype & VSTYPE) == VSLENGTH) + str = "${#"; + else + str = "${"; + goto dostr; + case CTLENDVAR: + str = "\"}" + !(quoted & 1); + quoted >>= 1; + subtype = 0; + goto dostr; + case CTLBACKQ: + str = "$(...)"; + goto dostr; + case CTLARI: + str = "$(("; + goto dostr; + case CTLENDARI: + str = "))"; + goto dostr; + case CTLQUOTEMARK: + quoted ^= 1; + c = '"'; + break; + case '=': + if (subtype == 0) + break; + if ((subtype & VSTYPE) != VSNORMAL) + quoted <<= 1; + str = vstype[subtype & VSTYPE]; + if (subtype & VSNUL) + c = ':'; + else + goto checkstr; + break; + case '\'': + case '\\': + case '"': + case '$': + /* These can only happen inside quotes */ + cc[0] = c; + str = cc; + c = '\\'; + break; + default: + break; + } + USTPUTC(c, nextc); +checkstr: + if (!str) + continue; +dostr: + while ((c = *str++)) { + USTPUTC(c, nextc); + } + } + if (quoted & 1) { + USTPUTC('"', nextc); + } + *nextc = 0; + cmdnextc = nextc; +} + + +STATIC void +showpipe(struct job *jp, struct output *out) +{ + struct procstat *sp; + struct procstat *spend; + + spend = jp->ps + jp->nprocs; + for (sp = jp->ps + 1; sp < spend; sp++) + outfmt(out, " | %s", sp->cmd); + outcslow('\n', out); + flushall(); +} + + +#if JOBS +STATIC void +xtcsetpgrp(int fd, pid_t pgrp) +{ + if (tcsetpgrp(fd, pgrp)) + sh_error("Cannot set tty process group (%s)", strerror(errno)); +} +#endif + + +STATIC int +getstatus(struct job *job) { + int status; + int retval; + + status = job->ps[job->nprocs - 1].status; + retval = WEXITSTATUS(status); + if (!WIFEXITED(status)) { +#if JOBS + retval = WSTOPSIG(status); + if (!WIFSTOPPED(status)) +#endif + { + /* XXX: limits number of signals */ + retval = WTERMSIG(status); +#if JOBS + if (retval == SIGINT) + job->sigint = 1; +#endif + } + retval += 128; + } + TRACE(("getstatus: job %d, nproc %d, status %x, retval %x\n", + jobno(job), job->nprocs, status, retval)); + return retval; +} diff --git a/shells/dash/files/src/jobs.h b/shells/dash/files/src/jobs.h new file mode 100644 index 0000000000000..953ee87127b11 --- /dev/null +++ b/shells/dash/files/src/jobs.h @@ -0,0 +1,109 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)jobs.h 8.2 (Berkeley) 5/4/95 + */ + +#include +#include + +/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */ +#define FORK_FG 0 +#define FORK_BG 1 +#define FORK_NOJOB 2 + +/* mode flags for showjob(s) */ +#define SHOW_PGID 0x01 /* only show pgid - for jobs -p */ +#define SHOW_PID 0x04 /* include process pid */ +#define SHOW_CHANGED 0x08 /* only jobs whose state has changed */ + + +/* + * A job structure contains information about a job. A job is either a + * single process or a set of processes contained in a pipeline. In the + * latter case, pidlist will be non-NULL, and will point to a -1 terminated + * array of pids. + */ + +struct procstat { + pid_t pid; /* process id */ + int status; /* last process status from wait() */ + char *cmd; /* text of command being run */ +}; + +struct job { + struct procstat ps0; /* status of process */ + struct procstat *ps; /* status or processes when more than one */ +#if JOBS + int stopstatus; /* status of a stopped job */ +#endif + uint32_t + nprocs: 16, /* number of processes */ + state: 8, +#define JOBRUNNING 0 /* at least one proc running */ +#define JOBSTOPPED 1 /* all procs are stopped */ +#define JOBDONE 2 /* all procs are completed */ +#if JOBS + sigint: 1, /* job was killed by SIGINT */ + jobctl: 1, /* job running under job control */ +#endif + waited: 1, /* true if this entry has been waited for */ + used: 1, /* true if this entry is in used */ + changed: 1; /* true if status has changed */ + struct job *prev_job; /* previous job */ +}; + +extern pid_t backgndpid; /* pid of last background process */ +extern int job_warning; /* user was warned about stopped jobs */ +#if JOBS +extern int jobctl; /* true if doing job control */ +#else +#define jobctl 0 +#endif + +void setjobctl(int); +int killcmd(int, char **); +int fgcmd(int, char **); +int bgcmd(int, char **); +int jobscmd(int, char **); +struct output; +void showjobs(struct output *, int); +int waitcmd(int, char **); +struct job *makejob(union node *, int); +int forkshell(struct job *, union node *, int); +int waitforjob(struct job *); +int stoppedjobs(void); + +#if ! JOBS +#define setjobctl(on) ((void)(on)) /* do nothing */ +#endif diff --git a/shells/dash/files/src/machdep.h b/shells/dash/files/src/machdep.h new file mode 100644 index 0000000000000..f2ff0ad881001 --- /dev/null +++ b/shells/dash/files/src/machdep.h @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)machdep.h 8.2 (Berkeley) 5/4/95 + */ + +/* + * Most machines require the value returned from malloc to be aligned + * in some way. The following macro will get this right on many machines. + */ + +#define SHELL_SIZE (sizeof(union {int i; char *cp; double d; }) - 1) +/* + * It appears that grabstackstr() will barf with such alignments + * because stalloc() will return a string allocated in a new stackblock. + */ +#define SHELL_ALIGN(nbytes) (((nbytes) + SHELL_SIZE) & ~SHELL_SIZE) diff --git a/shells/dash/files/src/mail.c b/shells/dash/files/src/mail.c new file mode 100644 index 0000000000000..02e07f777add1 --- /dev/null +++ b/shells/dash/files/src/mail.c @@ -0,0 +1,112 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Routines to check for mail. (Perhaps make part of main.c?) + */ +#include +#include +#include + +#include "shell.h" +#include "nodes.h" +#include "exec.h" /* defines padvance() */ +#include "var.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "mail.h" +#include "mystring.h" + + +#define MAXMBOXES 10 + +/* times of mailboxes */ +static time_t mailtime[MAXMBOXES]; +/* Set if MAIL or MAILPATH is changed. */ +static int changed; + + + +/* + * Print appropriate message(s) if mail has arrived. If changed is set, + * then the value of MAIL has changed, so we just update the values. + */ + +void +chkmail(void) +{ + const char *mpath; + char *p; + char *q; + time_t *mtp; + struct stackmark smark; + struct stat64 statb; + + setstackmark(&smark); + mpath = mpathset() ? mpathval() : mailval(); + for (mtp = mailtime; mtp < mailtime + MAXMBOXES; mtp++) { + p = padvance(&mpath, nullstr); + if (p == NULL) + break; + if (*p == '\0') + continue; + for (q = p ; *q ; q++); +#ifdef DEBUG + if (q[-1] != '/') + abort(); +#endif + q[-1] = '\0'; /* delete trailing '/' */ + if (stat64(p, &statb) < 0) { + *mtp = 0; + continue; + } + if (!changed && statb.st_mtime != *mtp) { + outfmt( + &errout, snlfmt, + pathopt ? pathopt : "you have mail" + ); + } + *mtp = statb.st_mtime; + } + changed = 0; + popstackmark(&smark); +} + + +void +changemail(const char *val) +{ + changed++; +} diff --git a/shells/dash/files/src/mail.h b/shells/dash/files/src/mail.h new file mode 100644 index 0000000000000..3c6b21d267f3d --- /dev/null +++ b/shells/dash/files/src/mail.h @@ -0,0 +1,38 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)mail.h 8.2 (Berkeley) 5/4/95 + */ + +void chkmail(void); +void changemail(const char *); diff --git a/shells/dash/files/src/main.c b/shells/dash/files/src/main.c new file mode 100644 index 0000000000000..7df3c44177b3a --- /dev/null +++ b/shells/dash/files/src/main.c @@ -0,0 +1,346 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include + + +#include "shell.h" +#include "main.h" +#include "mail.h" +#include "options.h" +#include "output.h" +#include "parser.h" +#include "nodes.h" +#include "expand.h" +#include "eval.h" +#include "jobs.h" +#include "input.h" +#include "trap.h" +#include "var.h" +#include "show.h" +#include "memalloc.h" +#include "error.h" +#include "init.h" +#include "mystring.h" +#include "exec.h" +#include "cd.h" + +#ifdef HETIO +#include "hetio.h" +#endif + +#define PROFILE 0 + +int rootpid; +int shlvl; +#ifdef __GLIBC__ +int *dash_errno; +#endif +#if PROFILE +short profile_buf[16384]; +extern int etext(); +#endif + +STATIC void read_profile(const char *); +STATIC char *find_dot_file(char *); +static int cmdloop(int); +int main(int, char **); + +/* + * Main routine. We initialize things, parse the arguments, execute + * profiles if we're a login shell, and then call cmdloop to execute + * commands. The setjmp call sets up the location to jump to when an + * exception occurs. When an exception occurs the variable "state" + * is used to figure out how far we had gotten. + */ + +int +main(int argc, char **argv) +{ + char *shinit; + volatile int state; + struct jmploc jmploc; + struct stackmark smark; + int login; + +#ifdef __GLIBC__ + dash_errno = __errno_location(); +#endif + +#if PROFILE + monitor(4, etext, profile_buf, sizeof profile_buf, 50); +#endif + state = 0; + if (unlikely(setjmp(jmploc.loc))) { + int e; + int s; + + reset(); + + e = exception; + + s = state; + if (e == EXEXIT || s == 0 || iflag == 0 || shlvl) + exitshell(); + + if (e == EXINT +#if ATTY + && (! attyset() || equal(termval(), "emacs")) +#endif + ) { + out2c('\n'); +#ifdef FLUSHERR + flushout(out2); +#endif + } + popstackmark(&smark); + FORCEINTON; /* enable interrupts */ + if (s == 1) + goto state1; + else if (s == 2) + goto state2; + else if (s == 3) + goto state3; + else + goto state4; + } + handler = &jmploc; +#ifdef DEBUG + opentrace(); + trputs("Shell args: "); trargs(argv); +#endif + rootpid = getpid(); + init(); + setstackmark(&smark); + login = procargs(argc, argv); + if (login) { + state = 1; + read_profile("/etc/profile"); +state1: + state = 2; + read_profile("$HOME/.profile"); + } +state2: + state = 3; + if ( +#ifndef linux + getuid() == geteuid() && getgid() == getegid() && +#endif + iflag + ) { + if ((shinit = lookupvar("ENV")) != NULL && *shinit != '\0') { + read_profile(shinit); + } + } + popstackmark(&smark); +state3: + state = 4; + if (minusc) + evalstring(minusc, 0); + + if (sflag || minusc == NULL) { +state4: /* XXX ??? - why isn't this before the "if" statement */ + cmdloop(1); + } +#if PROFILE + monitor(0); +#endif +#if GPROF + { + extern void _mcleanup(void); + _mcleanup(); + } +#endif + exitshell(); + /* NOTREACHED */ +} + + +/* + * Read and execute commands. "Top" is nonzero for the top level command + * loop; it turns on prompting if the shell is interactive. + */ + +static int +cmdloop(int top) +{ + union node *n; + struct stackmark smark; + int inter; + int status = 0; + int numeof = 0; + + TRACE(("cmdloop(%d) called\n", top)); +#ifdef HETIO + if(iflag && top) + hetio_init(); +#endif + for (;;) { + int skip; + + setstackmark(&smark); + if (jobctl) + showjobs(out2, SHOW_CHANGED); + inter = 0; + if (iflag && top) { + inter++; + chkmail(); + } + n = parsecmd(inter); + /* showtree(n); DEBUG */ + if (n == NEOF) { + if (!top || numeof >= 50) + break; + if (!stoppedjobs()) { + if (!Iflag) + break; + out2str("\nUse \"exit\" to leave shell.\n"); + } + numeof++; + } else if (nflag == 0) { + job_warning = (job_warning == 2) ? 1 : 0; + numeof = 0; + evaltree(n, 0); + status = exitstatus; + } + popstackmark(&smark); + + skip = evalskip; + if (skip) { + evalskip &= ~SKIPFUNC; + break; + } + } + + return status; +} + + + +/* + * Read /etc/profile or .profile. Return on error. + */ + +STATIC void +read_profile(const char *name) +{ + name = expandstr(name); + if (setinputfile(name, INPUT_PUSH_FILE | INPUT_NOFILE_OK) < 0) + return; + + cmdloop(0); + popfile(); +} + + + +/* + * Read a file containing shell functions. + */ + +void +readcmdfile(char *name) +{ + setinputfile(name, INPUT_PUSH_FILE); + cmdloop(0); + popfile(); +} + + + +/* + * Take commands from a file. To be compatible we should do a path + * search for the file, which is necessary to find sub-commands. + */ + + +STATIC char * +find_dot_file(char *basename) +{ + char *fullname; + const char *path = pathval(); + struct stat statb; + + /* don't try this for absolute or relative paths */ + if (strchr(basename, '/')) + return basename; + + while ((fullname = padvance(&path, basename)) != NULL) { + if ((stat(fullname, &statb) == 0) && S_ISREG(statb.st_mode)) { + /* + * Don't bother freeing here, since it will + * be freed by the caller. + */ + return fullname; + } + stunalloc(fullname); + } + + /* not found in the PATH */ + sh_error("%s: not found", basename); + /* NOTREACHED */ +} + +int +dotcmd(int argc, char **argv) +{ + int status = 0; + + if (argc >= 2) { /* That's what SVR2 does */ + char *fullname; + + fullname = find_dot_file(argv[1]); + setinputfile(fullname, INPUT_PUSH_FILE); + commandname = fullname; + status = cmdloop(0); + popfile(); + } + return status; +} + + +int +exitcmd(int argc, char **argv) +{ + if (stoppedjobs()) + return 0; + if (argc > 1) + exitstatus = number(argv[1]); + exraise(EXEXIT); + /* NOTREACHED */ +} diff --git a/shells/dash/files/src/main.h b/shells/dash/files/src/main.h new file mode 100644 index 0000000000000..19e49835df72a --- /dev/null +++ b/shells/dash/files/src/main.h @@ -0,0 +1,54 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)main.h 8.2 (Berkeley) 5/4/95 + */ + +#include + +/* pid of main shell */ +extern int rootpid; +/* shell level: 0 for the main shell, 1 for its children, and so on */ +extern int shlvl; +#define rootshell (!shlvl) + +#ifdef __GLIBC__ +/* glibc sucks */ +extern int *dash_errno; +#undef errno +#define errno (*dash_errno) +#endif + +void readcmdfile(char *); +int dotcmd(int, char **); +int exitcmd(int, char **); diff --git a/shells/dash/files/src/memalloc.c b/shells/dash/files/src/memalloc.c new file mode 100644 index 0000000000000..d8e4413d69dae --- /dev/null +++ b/shells/dash/files/src/memalloc.c @@ -0,0 +1,302 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include + +#include "shell.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "machdep.h" +#include "mystring.h" +#include "system.h" + +/* + * Like malloc, but returns an error when out of space. + */ + +pointer +ckmalloc(size_t nbytes) +{ + pointer p; + + p = malloc(nbytes); + if (p == NULL) + sh_error("Out of space"); + return p; +} + + +/* + * Same for realloc. + */ + +pointer +ckrealloc(pointer p, size_t nbytes) +{ + p = realloc(p, nbytes); + if (p == NULL) + sh_error("Out of space"); + return p; +} + + +/* + * Make a copy of a string in safe storage. + */ + +char * +savestr(const char *s) +{ + char *p = strdup(s); + if (!p) + sh_error("Out of space"); + return p; +} + + +/* + * Parse trees for commands are allocated in lifo order, so we use a stack + * to make this more efficient, and also to avoid all sorts of exception + * handling code to handle interrupts in the middle of a parse. + * + * The size 504 was chosen because the Ultrix malloc handles that size + * well. + */ + +/* minimum size of a block */ +#define MINSIZE SHELL_ALIGN(504) + +struct stack_block { + struct stack_block *prev; + char space[MINSIZE]; +}; + +struct stack_block stackbase; +struct stack_block *stackp = &stackbase; +char *stacknxt = stackbase.space; +size_t stacknleft = MINSIZE; +char *sstrend = stackbase.space + MINSIZE; + +pointer +stalloc(size_t nbytes) +{ + char *p; + size_t aligned; + + aligned = SHELL_ALIGN(nbytes); + if (aligned > stacknleft) { + size_t len; + size_t blocksize; + struct stack_block *sp; + + blocksize = aligned; + if (blocksize < MINSIZE) + blocksize = MINSIZE; + len = sizeof(struct stack_block) - MINSIZE + blocksize; + if (len < blocksize) + sh_error("Out of space"); + INTOFF; + sp = ckmalloc(len); + sp->prev = stackp; + stacknxt = sp->space; + stacknleft = blocksize; + sstrend = stacknxt + blocksize; + stackp = sp; + INTON; + } + p = stacknxt; + stacknxt += aligned; + stacknleft -= aligned; + return p; +} + + +void +stunalloc(pointer p) +{ +#ifdef DEBUG + if (!p || (stacknxt < (char *)p) || ((char *)p < stackp->space)) { + write(2, "stunalloc\n", 10); + abort(); + } +#endif + stacknleft += stacknxt - (char *)p; + stacknxt = p; +} + + + +void pushstackmark(struct stackmark *mark, size_t len) +{ + mark->stackp = stackp; + mark->stacknxt = stacknxt; + mark->stacknleft = stacknleft; + grabstackblock(len); +} + +void setstackmark(struct stackmark *mark) +{ + pushstackmark(mark, stacknxt == stackp->space && stackp != &stackbase); +} + + +void +popstackmark(struct stackmark *mark) +{ + struct stack_block *sp; + + INTOFF; + while (stackp != mark->stackp) { + sp = stackp; + stackp = sp->prev; + ckfree(sp); + } + stacknxt = mark->stacknxt; + stacknleft = mark->stacknleft; + sstrend = mark->stacknxt + mark->stacknleft; + INTON; +} + + +/* + * When the parser reads in a string, it wants to stick the string on the + * stack and only adjust the stack pointer when it knows how big the + * string is. Stackblock (defined in stack.h) returns a pointer to a block + * of space on top of the stack and stackblocklen returns the length of + * this block. Growstackblock will grow this space by at least one byte, + * possibly moving it (like realloc). Grabstackblock actually allocates the + * part of the block that has been used. + */ + +void +growstackblock(void) +{ + size_t newlen; + + newlen = stacknleft * 2; + if (newlen < stacknleft) + sh_error("Out of space"); + if (newlen < 128) + newlen += 128; + + if (stacknxt == stackp->space && stackp != &stackbase) { + struct stack_block *sp; + struct stack_block *prevstackp; + size_t grosslen; + + INTOFF; + sp = stackp; + prevstackp = sp->prev; + grosslen = newlen + sizeof(struct stack_block) - MINSIZE; + sp = ckrealloc((pointer)sp, grosslen); + sp->prev = prevstackp; + stackp = sp; + stacknxt = sp->space; + stacknleft = newlen; + sstrend = sp->space + newlen; + INTON; + } else { + char *oldspace = stacknxt; + int oldlen = stacknleft; + char *p = stalloc(newlen); + + /* free the space we just allocated */ + stacknxt = memcpy(p, oldspace, oldlen); + stacknleft += newlen; + } +} + +/* + * The following routines are somewhat easier to use than the above. + * The user declares a variable of type STACKSTR, which may be declared + * to be a register. The macro STARTSTACKSTR initializes things. Then + * the user uses the macro STPUTC to add characters to the string. In + * effect, STPUTC(c, p) is the same as *p++ = c except that the stack is + * grown as necessary. When the user is done, she can just leave the + * string there and refer to it using stackblock(). Or she can allocate + * the space for it using grabstackstr(). If it is necessary to allow + * someone else to use the stack temporarily and then continue to grow + * the string, the user should use grabstack to allocate the space, and + * then call ungrabstr(p) to return to the previous mode of operation. + * + * USTPUTC is like STPUTC except that it doesn't check for overflow. + * CHECKSTACKSPACE can be called before USTPUTC to ensure that there + * is space for at least one character. + */ + +void * +growstackstr(void) +{ + size_t len = stackblocksize(); + growstackblock(); + return stackblock() + len; +} + +/* + * Called from CHECKSTRSPACE. + */ + +char * +makestrspace(size_t newlen, char *p) +{ + size_t len = p - stacknxt; + size_t size; + + for (;;) { + size_t nleft; + + size = stackblocksize(); + nleft = size - len; + if (nleft >= newlen) + break; + growstackblock(); + } + return stackblock() + len; +} + +char * +stnputs(const char *s, size_t n, char *p) +{ + p = makestrspace(n, p); + p = mempcpy(p, s, n); + return p; +} + +char * +stputs(const char *s, char *p) +{ + return stnputs(s, strlen(s), p); +} diff --git a/shells/dash/files/src/memalloc.h b/shells/dash/files/src/memalloc.h new file mode 100644 index 0000000000000..4b5be46cb0941 --- /dev/null +++ b/shells/dash/files/src/memalloc.h @@ -0,0 +1,100 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 + */ + +#include + +struct stackmark { + struct stack_block *stackp; + char *stacknxt; + size_t stacknleft; +}; + + +extern char *stacknxt; +extern size_t stacknleft; +extern char *sstrend; + +pointer ckmalloc(size_t); +pointer ckrealloc(pointer, size_t); +char *savestr(const char *); +pointer stalloc(size_t); +void stunalloc(pointer); +void pushstackmark(struct stackmark *mark, size_t len); +void setstackmark(struct stackmark *); +void popstackmark(struct stackmark *); +void growstackblock(void); +void *growstackstr(void); +char *makestrspace(size_t, char *); +char *stnputs(const char *, size_t, char *); +char *stputs(const char *, char *); + + +static inline void grabstackblock(size_t len) +{ + stalloc(len); +} + +static inline char *_STPUTC(int c, char *p) { + if (p == sstrend) + p = growstackstr(); + *p++ = c; + return p; +} + +#define stackblock() ((void *)stacknxt) +#define stackblocksize() stacknleft +#define STARTSTACKSTR(p) ((p) = stackblock()) +#define STPUTC(c, p) ((p) = _STPUTC((c), (p))) +#define CHECKSTRSPACE(n, p) \ + ({ \ + char *q = (p); \ + size_t l = (n); \ + size_t m = sstrend - q; \ + if (l > m) \ + (p) = makestrspace(l, q); \ + 0; \ + }) +#define USTPUTC(c, p) (*p++ = (c)) +#define STACKSTRNUL(p) ((p) == sstrend? (p = growstackstr(), *p = '\0') : (*p = '\0')) +#define STUNPUTC(p) (--p) +#define STTOPC(p) p[-1] +#define STADJUST(amount, p) (p += (amount)) + +#define grabstackstr(p) stalloc((char *)(p) - (char *)stackblock()) +#define ungrabstackstr(s, p) stunalloc((s)) +#define stackstrend() ((void *)sstrend) + +#define ckfree(p) free((pointer)(p)) diff --git a/shells/dash/files/src/miscbltin.c b/shells/dash/files/src/miscbltin.c new file mode 100644 index 0000000000000..b596fd277e8a6 --- /dev/null +++ b/shells/dash/files/src/miscbltin.c @@ -0,0 +1,528 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Miscelaneous builtins. + */ + +#include /* quad_t */ +#include /* BSD4_4 */ +#include +#include +#include +#include +#include +#include +#include + +#include "shell.h" +#include "options.h" +#include "var.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "miscbltin.h" +#include "mystring.h" +#include "main.h" +#include "expand.h" +#include "parser.h" +#include "trap.h" + +#undef rflag + + +/** handle one line of the read command. + * more fields than variables -> remainder shall be part of last variable. + * less fields than variables -> remaining variables unset. + * + * @param line complete line of input + * @param ap argument (variable) list + * @param len length of line including trailing '\0' + */ +static void +readcmd_handle_line(char *s, char **ap) +{ + struct arglist arglist; + struct strlist *sl; + char *backup; + char *line; + + /* ifsbreakup will fiddle with stack region... */ + line = stackblock(); + s = grabstackstr(s); + + /* need a copy, so that delimiters aren't lost + * in case there are more fields than variables */ + backup = sstrdup(line); + + arglist.lastp = &arglist.list; + + ifsbreakup(s, &arglist); + *arglist.lastp = NULL; + ifsfree(); + + sl = arglist.list; + + do { + if (!sl) { + /* nullify remaining arguments */ + do { + setvar(*ap, nullstr, 0); + } while (*++ap); + + return; + } + + /* remaining fields present, but no variables left. */ + if (!ap[1] && sl->next) { + size_t offset; + char *remainder; + + /* FIXME little bit hacky, assuming that ifsbreakup + * will not modify the length of the string */ + offset = sl->text - s; + remainder = backup + offset; + rmescapes(remainder); + setvar(*ap, remainder, 0); + + return; + } + + /* set variable to field */ + rmescapes(sl->text); + setvar(*ap, sl->text, 0); + sl = sl->next; + } while (*++ap); +} + +/* + * The read builtin. The -e option causes backslashes to escape the + * following character. The -p option followed by an argument prompts + * with the argument. + * + * This uses unbuffered input, which may be avoidable in some cases. + */ + +int +readcmd(int argc, char **argv) +{ + char **ap; + char c; + int rflag; + char *prompt; + char *p; + int startloc; + int newloc; + int status; + int i; + + rflag = 0; + prompt = NULL; + while ((i = nextopt("p:r")) != '\0') { + if (i == 'p') + prompt = optionarg; + else + rflag = 1; + } + if (prompt && isatty(0)) { + out2str(prompt); +#ifdef FLUSHERR + flushall(); +#endif + } + if (*(ap = argptr) == NULL) + sh_error("arg count"); + + status = 0; + STARTSTACKSTR(p); + + goto start; + + for (;;) { + switch (read(0, &c, 1)) { + case 1: + break; + default: + if (errno == EINTR && !pendingsigs) + continue; + /* fall through */ + case 0: + status = 1; + goto out; + } + if (c == '\0') + continue; + if (newloc >= startloc) { + if (c == '\n') + goto resetbs; + goto put; + } + if (!rflag && c == '\\') { + newloc = p - (char *)stackblock(); + continue; + } + if (c == '\n') + break; +put: + CHECKSTRSPACE(2, p); + if (strchr(qchars, c)) + USTPUTC(CTLESC, p); + USTPUTC(c, p); + + if (newloc >= startloc) { +resetbs: + recordregion(startloc, newloc, 0); +start: + startloc = p - (char *)stackblock(); + newloc = startloc - 1; + } + } +out: + recordregion(startloc, p - (char *)stackblock(), 0); + STACKSTRNUL(p); + readcmd_handle_line(p + 1, ap); + return status; +} + + + +/* + * umask builtin + * + * This code was ripped from pdksh 5.2.14 and hacked for use with + * dash by Herbert Xu. + * + * Public domain. + */ + +int +umaskcmd(int argc, char **argv) +{ + char *ap; + int mask; + int i; + int symbolic_mode = 0; + + while ((i = nextopt("S")) != '\0') { + symbolic_mode = 1; + } + + INTOFF; + mask = umask(0); + umask(mask); + INTON; + + if ((ap = *argptr) == NULL) { + if (symbolic_mode) { + char buf[18]; + int j; + + mask = ~mask; + ap = buf; + for (i = 0; i < 3; i++) { + *ap++ = "ugo"[i]; + *ap++ = '='; + for (j = 0; j < 3; j++) + if (mask & (1 << (8 - (3*i + j)))) + *ap++ = "rwx"[j]; + *ap++ = ','; + } + ap[-1] = '\0'; + out1fmt("%s\n", buf); + } else { + out1fmt("%.4o\n", mask); + } + } else { + int new_mask; + + if (isdigit((unsigned char) *ap)) { + new_mask = 0; + do { + if (*ap >= '8' || *ap < '0') + sh_error(illnum, *argptr); + new_mask = (new_mask << 3) + (*ap - '0'); + } while (*++ap != '\0'); + } else { + int positions, new_val; + char op; + + mask = ~mask; + new_mask = mask; + positions = 0; + while (*ap) { + while (*ap && strchr("augo", *ap)) + switch (*ap++) { + case 'a': positions |= 0111; break; + case 'u': positions |= 0100; break; + case 'g': positions |= 0010; break; + case 'o': positions |= 0001; break; + } + if (!positions) + positions = 0111; /* default is a */ + if (!strchr("=+-", op = *ap)) + break; + ap++; + new_val = 0; + while (*ap && strchr("rwxugoXs", *ap)) + switch (*ap++) { + case 'r': new_val |= 04; break; + case 'w': new_val |= 02; break; + case 'x': new_val |= 01; break; + case 'u': new_val |= mask >> 6; + break; + case 'g': new_val |= mask >> 3; + break; + case 'o': new_val |= mask >> 0; + break; + case 'X': if (mask & 0111) + new_val |= 01; + break; + case 's': /* ignored */ + break; + } + new_val = (new_val & 07) * positions; + switch (op) { + case '-': + new_mask &= ~new_val; + break; + case '=': + new_mask = new_val + | (new_mask & ~(positions * 07)); + break; + case '+': + new_mask |= new_val; + } + if (*ap == ',') { + positions = 0; + ap++; + } else if (!strchr("=+-", *ap)) + break; + } + if (*ap) { + sh_error("Illegal mode: %s", *argptr); + return 1; + } + new_mask = ~new_mask; + } + umask(new_mask); + } + return 0; +} + +#ifdef HAVE_GETRLIMIT +/* + * ulimit builtin + * + * This code, originally by Doug Gwyn, Doug Kingston, Eric Gisin, and + * Michael Rendell was ripped from pdksh 5.0.8 and hacked for use with + * ash by J.T. Conklin. + * + * Public domain. + */ + +struct limits { + const char *name; + int cmd; + int factor; /* multiply by to get rlim_{cur,max} values */ + char option; +}; + +static const struct limits limits[] = { +#ifdef RLIMIT_CPU + { "time(seconds)", RLIMIT_CPU, 1, 't' }, +#endif +#ifdef RLIMIT_FSIZE + { "file(blocks)", RLIMIT_FSIZE, 512, 'f' }, +#endif +#ifdef RLIMIT_DATA + { "data(kbytes)", RLIMIT_DATA, 1024, 'd' }, +#endif +#ifdef RLIMIT_STACK + { "stack(kbytes)", RLIMIT_STACK, 1024, 's' }, +#endif +#ifdef RLIMIT_CORE + { "coredump(blocks)", RLIMIT_CORE, 512, 'c' }, +#endif +#ifdef RLIMIT_RSS + { "memory(kbytes)", RLIMIT_RSS, 1024, 'm' }, +#endif +#ifdef RLIMIT_MEMLOCK + { "locked memory(kbytes)", RLIMIT_MEMLOCK, 1024, 'l' }, +#endif +#ifdef RLIMIT_NPROC + { "process", RLIMIT_NPROC, 1, 'p' }, +#endif +#ifdef RLIMIT_NOFILE + { "nofiles", RLIMIT_NOFILE, 1, 'n' }, +#endif +#ifdef RLIMIT_AS + { "vmemory(kbytes)", RLIMIT_AS, 1024, 'v' }, +#endif +#ifdef RLIMIT_LOCKS + { "locks", RLIMIT_LOCKS, 1, 'w' }, +#endif +#ifdef RLIMIT_RTPRIO + { "rtprio", RLIMIT_RTPRIO, 1, 'r' }, +#endif + { (char *) 0, 0, 0, '\0' } +}; + +enum limtype { SOFT = 0x1, HARD = 0x2 }; + +static void printlim(enum limtype how, const struct rlimit *limit, + const struct limits *l) +{ + rlim_t val; + + val = limit->rlim_max; + if (how & SOFT) + val = limit->rlim_cur; + + if (val == RLIM_INFINITY) + out1fmt("unlimited\n"); + else { + val /= l->factor; + out1fmt("%" PRIdMAX "\n", (intmax_t) val); + } +} + +int +ulimitcmd(int argc, char **argv) +{ + int c; + rlim_t val = 0; + enum limtype how = SOFT | HARD; + const struct limits *l; + int set, all = 0; + int optc, what; + struct rlimit limit; + + what = 'f'; + while ((optc = nextopt("HSa" +#ifdef RLIMIT_CPU + "t" +#endif +#ifdef RLIMIT_FSIZE + "f" +#endif +#ifdef RLIMIT_DATA + "d" +#endif +#ifdef RLIMIT_STACK + "s" +#endif +#ifdef RLIMIT_CORE + "c" +#endif +#ifdef RLIMIT_RSS + "m" +#endif +#ifdef RLIMIT_MEMLOCK + "l" +#endif +#ifdef RLIMIT_NPROC + "p" +#endif +#ifdef RLIMIT_NOFILE + "n" +#endif +#ifdef RLIMIT_AS + "v" +#endif +#ifdef RLIMIT_LOCKS + "w" +#endif + )) != '\0') + switch (optc) { + case 'H': + how = HARD; + break; + case 'S': + how = SOFT; + break; + case 'a': + all = 1; + break; + default: + what = optc; + } + + for (l = limits; l->option != what; l++) + ; + + set = *argptr ? 1 : 0; + if (set) { + char *p = *argptr; + + if (all || argptr[1]) + sh_error("too many arguments"); + if (strcmp(p, "unlimited") == 0) + val = RLIM_INFINITY; + else { + val = (rlim_t) 0; + + while ((c = *p++) >= '0' && c <= '9') + { + val = (val * 10) + (long)(c - '0'); + if (val < (rlim_t) 0) + break; + } + if (c) + sh_error("bad number"); + val *= l->factor; + } + } + if (all) { + for (l = limits; l->name; l++) { + getrlimit(l->cmd, &limit); + out1fmt("%-20s ", l->name); + printlim(how, &limit, l); + } + return 0; + } + + getrlimit(l->cmd, &limit); + if (set) { + if (how & HARD) + limit.rlim_max = val; + if (how & SOFT) + limit.rlim_cur = val; + if (setrlimit(l->cmd, &limit) < 0) + sh_error("error setting limit (%s)", strerror(errno)); + } else { + printlim(how, &limit, l); + } + return 0; +} +#endif diff --git a/shells/dash/files/src/miscbltin.h b/shells/dash/files/src/miscbltin.h new file mode 100644 index 0000000000000..dd9a8d1c6c3c6 --- /dev/null +++ b/shells/dash/files/src/miscbltin.h @@ -0,0 +1,31 @@ +/* + * Copyright (c) 1997 Christos Zoulas. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +int readcmd(int, char **); +int umaskcmd(int, char **); +int ulimitcmd(int, char **); diff --git a/shells/dash/files/src/mkbuiltins b/shells/dash/files/src/mkbuiltins new file mode 100644 index 0000000000000..09def2c2174ac --- /dev/null +++ b/shells/dash/files/src/mkbuiltins @@ -0,0 +1,119 @@ +#!/bin/sh - +# $NetBSD: mkbuiltins,v 1.17 2002/11/24 22:35:41 christos Exp $ +# +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu . All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)mkbuiltins 8.2 (Berkeley) 5/4/95 + +tempfile=tempfile +if ! type tempfile > /dev/null 2>&1 && ! type mktemp > /dev/null 2>&1; then + _my_tempfile() + { + local index=0 + while test -f "${TMPDIR:-/tmp}/builtin.$$.$index"; do + index=`expr $index + 1` + done + + touch "${TMPDIR:-/tmp}/builtin.$$.$index" + echo "${TMPDIR:-/tmp}/builtin.$$.$index" + } + + tempfile="_my_tempfile" +elif ! type tempfile > /dev/null 2>&1; then + tempfile="mktemp ${TMPDIR:-/tmp}/builtin.XXXXXX" +fi + +trap 'rm -f $temp $temp2' EXIT +temp=$($tempfile) +temp2=$($tempfile) + +builtins=$1 + +exec > builtins.c +cat <<\! +/* + * This file was generated by the mkbuiltins program. + */ + +#include "shell.h" +#include "builtins.h" + +! +< $builtins sed '/^#/d; /^$/d' > $temp +awk '{ printf "int %s(int, char **);\n", $1}' $temp +echo ' +const struct builtincmd builtincmd[] = {' +awk '{ for (i = 2 ; i <= NF ; i++) { + line = $i "\t" $1 + if ($i ~ /^-/) + line = $(++i) "\t" line + print line + }}' $temp | LC_COLLATE=C sort -k 1,1 | tee $temp2 | awk '{ + opt = "" + if (NF > 2) { + opt = substr($2, 2) + $2 = $3 + } + mask = 0 + cmd = $2 + if (opt ~ /n/) { cmd = "NULL" } + if (opt ~ /s/) { mask += 1 } + if (opt ~ /[su]/) { mask += 2 } + if (opt ~ /a/) { mask += 4} + printf "\t{ \"%s\", %s, %d },\n", $1, cmd, mask + }' +echo '};' + +exec > builtins.h +cat <<\! +/* + * This file was generated by the mkbuiltins program. + */ + +! +sed 's/ -[a-z]*//' $temp2 | nl -ba -v0 | LC_COLLATE=C sort -u -k 3,3 | +tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | + awk '{ printf "#define %s (builtincmd + %d)\n", $3, $1}' +printf '\n#define NUMBUILTINS %d\n' $(wc -l < $temp2) +echo ' +#define BUILTIN_SPECIAL 0x1 +#define BUILTIN_REGULAR 0x2 +#define BUILTIN_ASSIGN 0x4 + +struct builtincmd { + const char *name; + int (*builtin)(int, char **); + unsigned flags; +}; + +extern const struct builtincmd builtincmd[];' diff --git a/shells/dash/files/src/mkinit.c b/shells/dash/files/src/mkinit.c new file mode 100644 index 0000000000000..9714bee0659de --- /dev/null +++ b/shells/dash/files/src/mkinit.c @@ -0,0 +1,479 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * This program scans all the source files for code to handle various + * special events and combines this code into one file. This (allegedly) + * improves the structure of the program since there is no need for + * anyone outside of a module to know that that module performs special + * operations on particular events. + * + * Usage: mkinit sourcefile... + */ + + +#include +#include +#include +#include +#include +#include + + +/* + * OUTFILE is the name of the output file. Output is initially written + * to the file OUTTEMP, which is then moved to OUTFILE. + */ + +#define OUTFILE "init.c" +#define OUTTEMP "init.c.new" + + +/* + * A text structure is basicly just a string that grows as more characters + * are added onto the end of it. It is implemented as a linked list of + * blocks of characters. The routines addstr and addchar append a string + * or a single character, respectively, to a text structure. Writetext + * writes the contents of a text structure to a file. + */ + +#define BLOCKSIZE 512 + +struct text { + char *nextc; + int nleft; + struct block *start; + struct block *last; +}; + +struct block { + struct block *next; + char text[BLOCKSIZE]; +}; + + +/* + * There is one event structure for each event that mkinit handles. + */ + +struct event { + char *name; /* name of event (e.g. INIT) */ + char *routine; /* name of routine called on event */ + char *comment; /* comment describing routine */ + struct text code; /* code for handling event */ +}; + + +char writer[] = "\ +/*\n\ + * This file was generated by the mkinit program.\n\ + */\n\ +\n"; + +char init[] = "\ +/*\n\ + * Initialization code.\n\ + */\n"; + +char reset[] = "\ +/*\n\ + * This routine is called when an error or an interrupt occurs in an\n\ + * interactive shell and control is returned to the main command loop.\n\ + */\n"; + + +struct event event[] = { + {"INIT", "init", init}, + {"RESET", "reset", reset}, + {NULL, NULL} +}; + + +char *curfile; /* current file */ +int linno; /* current line */ +char *header_files[200]; /* list of header files */ +struct text defines; /* #define statements */ +struct text decls; /* declarations */ +int amiddecls; /* for formatting */ + + +void readfile(char *); +int match(char *, char *); +int gooddefine(char *); +void doevent(struct event *, FILE *, char *); +void doinclude(char *); +void dodecl(char *, FILE *); +void output(void); +void addstr(char *, struct text *); +void addchar(int, struct text *); +void writetext(struct text *, FILE *); +FILE *ckfopen(char *, char *); +void *ckmalloc(int); +char *savestr(char *); +static void error(char *); +int main(int, char **); + +#define equal(s1, s2) (strcmp(s1, s2) == 0) + +int +main(int argc, char **argv) +{ + char **ap; + + header_files[0] = "\"shell.h\""; + header_files[1] = "\"mystring.h\""; + header_files[2] = "\"init.h\""; + for (ap = argv + 1 ; *ap ; ap++) + readfile(*ap); + output(); + rename(OUTTEMP, OUTFILE); + exit(0); + /* NOTREACHED */ +} + + +/* + * Parse an input file. + */ + +void +readfile(char *fname) +{ + FILE *fp; + char line[1024]; + struct event *ep; + + fp = ckfopen(fname, "r"); + curfile = fname; + linno = 0; + amiddecls = 0; + while (fgets(line, sizeof line, fp) != NULL) { + linno++; + for (ep = event ; ep->name ; ep++) { + if (line[0] == ep->name[0] && match(ep->name, line)) { + doevent(ep, fp, fname); + break; + } + } + if (line[0] == 'I' && match("INCLUDE", line)) + doinclude(line); + if (line[0] == 'M' && match("MKINIT", line)) + dodecl(line, fp); + if (line[0] == '#' && gooddefine(line)) { + char *cp; + char line2[1024]; + static const char undef[] = "#undef "; + + strcpy(line2, line); + memcpy(line2, undef, sizeof(undef) - 1); + cp = line2 + sizeof(undef) - 1; + while(*cp && (*cp == ' ' || *cp == '\t')) + cp++; + while(*cp && *cp != ' ' && *cp != '\t' && *cp != '\n') + cp++; + *cp++ = '\n'; *cp = '\0'; + addstr(line2, &defines); + addstr(line, &defines); + } + } + fclose(fp); +} + + +int +match(char *name, char *line) +{ + char *p, *q; + + p = name, q = line; + while (*p) { + if (*p++ != *q++) + return 0; + } + if (*q != '{' && *q != ' ' && *q != '\t' && *q != '\n') + return 0; + return 1; +} + + +int +gooddefine(char *line) +{ + char *p; + + if (! match("#define", line)) + return 0; /* not a define */ + p = line + 7; + while (*p == ' ' || *p == '\t') + p++; + while (*p != ' ' && *p != '\t') { + if (*p == '(') + return 0; /* macro definition */ + p++; + } + while (*p != '\n' && *p != '\0') + p++; + if (p[-1] == '\\') + return 0; /* multi-line definition */ + return 1; +} + + +void +doevent(struct event *ep, FILE *fp, char *fname) +{ + char line[1024]; + int indent; + char *p; + + sprintf(line, "\n /* from %s: */\n", fname); + addstr(line, &ep->code); + addstr(" {\n", &ep->code); + for (;;) { + linno++; + if (fgets(line, sizeof line, fp) == NULL) + error("Unexpected EOF"); + if (equal(line, "}\n")) + break; + indent = 6; + for (p = line ; *p == '\t' ; p++) + indent += 8; + for ( ; *p == ' ' ; p++) + indent++; + if (*p == '\n' || *p == '#') + indent = 0; + while (indent >= 8) { + addchar('\t', &ep->code); + indent -= 8; + } + while (indent > 0) { + addchar(' ', &ep->code); + indent--; + } + addstr(p, &ep->code); + } + addstr(" }\n", &ep->code); +} + + +void +doinclude(char *line) +{ + char *p; + char *name; + char **pp; + + for (p = line ; *p != '"' && *p != '<' && *p != '\0' ; p++); + if (*p == '\0') + error("Expecting '\"' or '<'"); + name = p; + while (*p != ' ' && *p != '\t' && *p != '\n') + p++; + if (p[-1] != '"' && p[-1] != '>') + error("Missing terminator"); + *p = '\0'; + + /* name now contains the name of the include file */ + for (pp = header_files ; *pp && ! equal(*pp, name) ; pp++); + if (*pp == NULL) + *pp = savestr(name); +} + + +void +dodecl(char *line1, FILE *fp) +{ + char line[1024]; + char *p, *q; + + if (strcmp(line1, "MKINIT\n") == 0) { /* start of struct/union decl */ + addchar('\n', &decls); + do { + linno++; + if (fgets(line, sizeof line, fp) == NULL) + error("Unterminated structure declaration"); + addstr(line, &decls); + } while (line[0] != '}'); + amiddecls = 0; + } else { + if (! amiddecls) + addchar('\n', &decls); + q = NULL; + for (p = line1 + 6 ; *p && strchr("=/\n", *p) == NULL; p++) + continue; + if (*p == '=') { /* eliminate initialization */ + for (q = p ; *q && *q != ';' ; q++); + if (*q == '\0') + q = NULL; + else { + while (p[-1] == ' ') + p--; + *p = '\0'; + } + } + addstr("extern", &decls); + addstr(line1 + 6, &decls); + if (q != NULL) + addstr(q, &decls); + amiddecls = 1; + } +} + + + +/* + * Write the output to the file OUTTEMP. + */ + +void +output(void) +{ + FILE *fp; + char **pp; + struct event *ep; + + fp = ckfopen(OUTTEMP, "w"); + fputs(writer, fp); + for (pp = header_files ; *pp ; pp++) + fprintf(fp, "#include %s\n", *pp); + fputs("\n\n\n", fp); + writetext(&defines, fp); + fputs("\n\n", fp); + writetext(&decls, fp); + for (ep = event ; ep->name ; ep++) { + fputs("\n\n\n", fp); + fputs(ep->comment, fp); + fprintf(fp, "\nvoid\n%s() {\n", ep->routine); + writetext(&ep->code, fp); + fprintf(fp, "}\n"); + } + fclose(fp); +} + + +/* + * A text structure is simply a block of text that is kept in memory. + * Addstr appends a string to the text struct, and addchar appends a single + * character. + */ + +void +addstr(char *s, struct text *text) +{ + while (*s) { + if (--text->nleft < 0) + addchar(*s++, text); + else + *text->nextc++ = *s++; + } +} + + +void +addchar(int c, struct text *text) +{ + struct block *bp; + + if (--text->nleft < 0) { + bp = ckmalloc(sizeof *bp); + if (text->start == NULL) + text->start = bp; + else + text->last->next = bp; + text->last = bp; + text->nextc = bp->text; + text->nleft = BLOCKSIZE - 1; + } + *text->nextc++ = c; +} + +/* + * Write the contents of a text structure to a file. + */ +void +writetext(struct text *text, FILE *fp) +{ + struct block *bp; + + if (text->start != NULL) { + for (bp = text->start ; bp != text->last ; bp = bp->next) { + if ((fwrite(bp->text, sizeof (char), BLOCKSIZE, fp)) != BLOCKSIZE) + error("Can't write data\n"); + } + if ((fwrite(bp->text, sizeof (char), BLOCKSIZE - text->nleft, fp)) != (BLOCKSIZE - text->nleft)) + error("Can't write data\n"); + } +} + +FILE * +ckfopen(char *file, char *mode) +{ + FILE *fp; + + if ((fp = fopen(file, mode)) == NULL) { + fprintf(stderr, "Can't open %s\n", file); + exit(2); + } + return fp; +} + +void * +ckmalloc(int nbytes) +{ + char *p; + + if ((p = malloc(nbytes)) == NULL) + error("Out of space"); + return p; +} + +char * +savestr(char *s) +{ + char *p; + + p = ckmalloc(strlen(s) + 1); + strcpy(p, s); + return p; +} + +static void +error(char *msg) +{ + if (curfile != NULL) + fprintf(stderr, "%s:%d: ", curfile, linno); + fprintf(stderr, "%s\n", msg); + exit(2); + /* NOTREACHED */ +} diff --git a/shells/dash/files/src/mknodes.c b/shells/dash/files/src/mknodes.c new file mode 100644 index 0000000000000..1903a6057cd0a --- /dev/null +++ b/shells/dash/files/src/mknodes.c @@ -0,0 +1,448 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * This program reads the nodetypes file and nodes.c.pat file. It generates + * the files nodes.h and nodes.c. + */ + +#include +#include +#include +#include + +#define MAXTYPES 50 /* max number of node types */ +#define MAXFIELDS 20 /* max fields in a structure */ +#define BUFLEN 100 /* size of character buffers */ + +/* field types */ +#define T_NODE 1 /* union node *field */ +#define T_NODELIST 2 /* struct nodelist *field */ +#define T_STRING 3 +#define T_INT 4 /* int field */ +#define T_OTHER 5 /* other */ +#define T_TEMP 6 /* don't copy this field */ + + +struct field { /* a structure field */ + char *name; /* name of field */ + int type; /* type of field */ + char *decl; /* declaration of field */ +}; + + +struct str { /* struct representing a node structure */ + char *tag; /* structure tag */ + int nfields; /* number of fields in the structure */ + struct field field[MAXFIELDS]; /* the fields of the structure */ + int done; /* set if fully parsed */ +}; + + +static int ntypes; /* number of node types */ +static char *nodename[MAXTYPES]; /* names of the nodes */ +static struct str *nodestr[MAXTYPES]; /* type of structure used by the node */ +static int nstr; /* number of structures */ +static struct str str[MAXTYPES]; /* the structures */ +static struct str *curstr; /* current structure */ +static FILE *infp; +static char line[1024]; +static int linno; +static char *linep; + +static void parsenode(void); +static void parsefield(void); +static void output(char *); +static void outsizes(FILE *); +static void outfunc(FILE *, int); +static void indent(int, FILE *); +static int nextfield(char *); +static void skipbl(void); +static int readline(void); +static void error(const char *, ...); +static char *savestr(const char *); +int main(int, char **); + + +int +main(int argc, char **argv) +{ + + /* + * some versions of linux complain: initializer element is not + * constant if this is done at compile time. + */ + infp = stdin; + + if (argc != 3) + error("usage: mknodes file"); + if ((infp = fopen(argv[1], "r")) == NULL) + error("Can't open %s", argv[1]); + while (readline()) { + if (line[0] == ' ' || line[0] == '\t') + parsefield(); + else if (line[0] != '\0') + parsenode(); + } + output(argv[2]); + exit(0); + /* NOTREACHED */ +} + + + +static void +parsenode(void) +{ + char name[BUFLEN]; + char tag[BUFLEN]; + struct str *sp; + + if (curstr && curstr->nfields > 0) + curstr->done = 1; + nextfield(name); + if (! nextfield(tag)) + error("Tag expected"); + if (*linep != '\0') + error("Garbage at end of line"); + nodename[ntypes] = savestr(name); + for (sp = str ; sp < str + nstr ; sp++) { + if (strcmp(sp->tag, tag) == 0) + break; + } + if (sp >= str + nstr) { + sp->tag = savestr(tag); + sp->nfields = 0; + curstr = sp; + nstr++; + } + nodestr[ntypes] = sp; + ntypes++; +} + + +static void +parsefield(void) +{ + char name[BUFLEN]; + char type[BUFLEN]; + char decl[2 * BUFLEN]; + struct field *fp; + + if (curstr == NULL || curstr->done) + error("No current structure to add field to"); + if (! nextfield(name)) + error("No field name"); + if (! nextfield(type)) + error("No field type"); + fp = &curstr->field[curstr->nfields]; + fp->name = savestr(name); + if (strcmp(type, "nodeptr") == 0) { + fp->type = T_NODE; + sprintf(decl, "union node *%s", name); + } else if (strcmp(type, "nodelist") == 0) { + fp->type = T_NODELIST; + sprintf(decl, "struct nodelist *%s", name); + } else if (strcmp(type, "string") == 0) { + fp->type = T_STRING; + sprintf(decl, "char *%s", name); + } else if (strcmp(type, "int") == 0) { + fp->type = T_INT; + sprintf(decl, "int %s", name); + } else if (strcmp(type, "other") == 0) { + fp->type = T_OTHER; + } else if (strcmp(type, "temp") == 0) { + fp->type = T_TEMP; + } else { + error("Unknown type %s", type); + } + if (fp->type == T_OTHER || fp->type == T_TEMP) { + skipbl(); + fp->decl = savestr(linep); + } else { + if (*linep) + error("Garbage at end of line"); + fp->decl = savestr(decl); + } + curstr->nfields++; +} + + +char writer[] = "\ +/*\n\ + * This file was generated by the mknodes program.\n\ + */\n\ +\n"; + +static void +output(char *file) +{ + FILE *hfile; + FILE *cfile; + FILE *patfile; + int i; + struct str *sp; + struct field *fp; + char *p; + + if ((patfile = fopen(file, "r")) == NULL) + error("Can't open %s", file); + if ((hfile = fopen("nodes.h", "w")) == NULL) + error("Can't create nodes.h"); + if ((cfile = fopen("nodes.c", "w")) == NULL) + error("Can't create nodes.c"); + fputs(writer, hfile); + for (i = 0 ; i < ntypes ; i++) + fprintf(hfile, "#define %s %d\n", nodename[i], i); + fputs("\n\n\n", hfile); + for (sp = str ; sp < &str[nstr] ; sp++) { + fprintf(hfile, "struct %s {\n", sp->tag); + for (i = sp->nfields, fp = sp->field ; --i >= 0 ; fp++) { + fprintf(hfile, " %s;\n", fp->decl); + } + fputs("};\n\n\n", hfile); + } + fputs("union node {\n", hfile); + fprintf(hfile, " int type;\n"); + for (sp = str ; sp < &str[nstr] ; sp++) { + fprintf(hfile, " struct %s %s;\n", sp->tag, sp->tag); + } + fputs("};\n\n\n", hfile); + fputs("struct nodelist {\n", hfile); + fputs("\tstruct nodelist *next;\n", hfile); + fputs("\tunion node *n;\n", hfile); + fputs("};\n\n\n", hfile); + fputs("struct funcnode {\n", hfile); + fputs("\tint count;\n", hfile); + fputs("\tunion node n;\n", hfile); + fputs("};\n\n\n", hfile); + fputs("struct funcnode *copyfunc(union node *);\n", hfile); + fputs("void freefunc(struct funcnode *);\n", hfile); + + fputs(writer, cfile); + while (fgets(line, sizeof line, patfile) != NULL) { + for (p = line ; *p == ' ' || *p == '\t' ; p++); + if (strcmp(p, "%SIZES\n") == 0) + outsizes(cfile); + else if (strcmp(p, "%CALCSIZE\n") == 0) + outfunc(cfile, 1); + else if (strcmp(p, "%COPY\n") == 0) + outfunc(cfile, 0); + else + fputs(line, cfile); + } +} + + + +static void +outsizes(FILE *cfile) +{ + int i; + + fprintf(cfile, "static const short nodesize[%d] = {\n", ntypes); + for (i = 0 ; i < ntypes ; i++) { + fprintf(cfile, " SHELL_ALIGN(sizeof (struct %s)),\n", + nodestr[i]->tag); + } + fprintf(cfile, "};\n"); +} + + +static void +outfunc(FILE *cfile, int calcsize) +{ + struct str *sp; + struct field *fp; + int i; + + fputs(" if (n == NULL)\n", cfile); + if (calcsize) + fputs(" return;\n", cfile); + else + fputs(" return NULL;\n", cfile); + if (calcsize) + fputs(" funcblocksize += nodesize[n->type];\n", cfile); + else { + fputs(" new = funcblock;\n", cfile); + fputs(" funcblock = (char *) funcblock + nodesize[n->type];\n", cfile); + } + fputs(" switch (n->type) {\n", cfile); + for (sp = str ; sp < &str[nstr] ; sp++) { + for (i = 0 ; i < ntypes ; i++) { + if (nodestr[i] == sp) + fprintf(cfile, " case %s:\n", nodename[i]); + } + for (i = sp->nfields ; --i >= 1 ; ) { + fp = &sp->field[i]; + switch (fp->type) { + case T_NODE: + if (calcsize) { + indent(12, cfile); + fprintf(cfile, "calcsize(n->%s.%s);\n", + sp->tag, fp->name); + } else { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = copynode(n->%s.%s);\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + case T_NODELIST: + if (calcsize) { + indent(12, cfile); + fprintf(cfile, "sizenodelist(n->%s.%s);\n", + sp->tag, fp->name); + } else { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = copynodelist(n->%s.%s);\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + case T_STRING: + if (calcsize) { + indent(12, cfile); + fprintf(cfile, "funcstringsize += strlen(n->%s.%s) + 1;\n", + sp->tag, fp->name); + } else { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = nodesavestr(n->%s.%s);\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + case T_INT: + case T_OTHER: + if (! calcsize) { + indent(12, cfile); + fprintf(cfile, "new->%s.%s = n->%s.%s;\n", + sp->tag, fp->name, sp->tag, fp->name); + } + break; + } + } + indent(12, cfile); + fputs("break;\n", cfile); + } + fputs(" };\n", cfile); + if (! calcsize) + fputs(" new->type = n->type;\n", cfile); +} + + +static void +indent(int amount, FILE *fp) +{ + while (amount >= 8) { + putc('\t', fp); + amount -= 8; + } + while (--amount >= 0) { + putc(' ', fp); + } +} + + +static int +nextfield(char *buf) +{ + char *p, *q; + + p = linep; + while (*p == ' ' || *p == '\t') + p++; + q = buf; + while (*p != ' ' && *p != '\t' && *p != '\0') + *q++ = *p++; + *q = '\0'; + linep = p; + return (q > buf); +} + + +static void +skipbl(void) +{ + while (*linep == ' ' || *linep == '\t') + linep++; +} + + +static int +readline(void) +{ + char *p; + + if (fgets(line, 1024, infp) == NULL) + return 0; + for (p = line ; *p != '#' && *p != '\n' && *p != '\0' ; p++); + while (p > line && (p[-1] == ' ' || p[-1] == '\t')) + p--; + *p = '\0'; + linep = line; + linno++; + if (p - line > BUFLEN) + error("Line too long"); + return 1; +} + + + +static void +error(const char *msg, ...) +{ + va_list va; + + va_start(va, msg); + + (void) fprintf(stderr, "line %d: ", linno); + (void) vfprintf(stderr, msg, va); + (void) fputc('\n', stderr); + + va_end(va); + + exit(2); + /* NOTREACHED */ +} + + + +static char * +savestr(const char *s) +{ + char *p; + + if ((p = malloc(strlen(s) + 1)) == NULL) + error("Out of space"); + (void) strcpy(p, s); + return p; +} diff --git a/shells/dash/files/src/mksignames.c b/shells/dash/files/src/mksignames.c new file mode 100644 index 0000000000000..a832eab9f9ac7 --- /dev/null +++ b/shells/dash/files/src/mksignames.c @@ -0,0 +1,417 @@ +/* signames.c -- Create and write `signames.c', which contains an array of + signal names. */ + +/* Copyright (C) 1992 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash is free software; you can redistribute it and/or modify it under + the terms of the GNU General Public License as published by the Free + Software Foundation; either version 2, or (at your option) any later + version. + + Bash is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + for more details. + + You should have received a copy of the GNU General Public License along + with Bash; see the file COPYING. If not, write to the Free Software + Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ + +#include +#include +#include +#include + +#if !defined (NSIG) +# define NSIG 64 +#endif + +/* + * Special traps: + * EXIT == 0 + */ +#define LASTSIG NSIG-1 + +char *signal_names[2 * NSIG + 3]; + +#define signal_names_size (sizeof(signal_names)/sizeof(signal_names[0])) + +char *progname; + +/* AIX 4.3 defines SIGRTMIN and SIGRTMAX as 888 and 999 respectively. + I don't want to allocate so much unused space for the intervening signal + numbers, so we just punt if SIGRTMAX is past the bounds of the + signal_names array (handled in configure). */ +#if defined (SIGRTMAX) && defined (UNUSABLE_RT_SIGNALS) +# undef SIGRTMAX +# undef SIGRTMIN +#endif + +#if defined (SIGRTMAX) || defined (SIGRTMIN) +# define RTLEN 14 +# define RTLIM 256 +#endif + +void +initialize_signames () +{ + register int i; +#if defined (SIGRTMAX) || defined (SIGRTMIN) + int rtmin, rtmax, rtcnt; +#endif + + for (i = 1; i < signal_names_size; i++) + signal_names[i] = (char *)NULL; + + /* `signal' 0 is what we do on exit. */ + signal_names[0] = "EXIT"; + + /* Place signal names which can be aliases for more common signal + names first. This allows (for example) SIGABRT to overwrite SIGLOST. */ + + /* POSIX 1003.1b-1993 real time signals, but take care of incomplete + implementations. Acoording to the standard, both, SIGRTMIN and + SIGRTMAX must be defined, SIGRTMIN must be stricly less than + SIGRTMAX, and the difference must be at least 7, that is, there + must be at least eight distinct real time signals. */ + + /* The generated signal names are SIGRTMIN, SIGRTMIN+1, ..., + SIGRTMIN+x, SIGRTMAX-x, ..., SIGRTMAX-1, SIGRTMAX. If the number + of RT signals is odd, there is an extra SIGRTMIN+(x+1). + These names are the ones used by ksh and /usr/xpg4/bin/sh on SunOS5. */ + +#if defined (SIGRTMIN) + rtmin = SIGRTMIN; + signal_names[rtmin] = "RTMIN"; +#endif + +#if defined (SIGRTMAX) + rtmax = SIGRTMAX; + signal_names[rtmax] = "RTMAX"; +#endif + +#if defined (SIGRTMAX) && defined (SIGRTMIN) + if (rtmax > rtmin) + { + rtcnt = (rtmax - rtmin - 1) / 2; + /* croak if there are too many RT signals */ + if (rtcnt >= RTLIM/2) + { + rtcnt = RTLIM/2-1; + fprintf(stderr, "%s: error: more than %i real time signals, fix `%s'\n", + progname, RTLIM, progname); + } + + for (i = 1; i <= rtcnt; i++) + { + signal_names[rtmin+i] = (char *)malloc(RTLEN); + if (signal_names[rtmin+i]) + sprintf (signal_names[rtmin+i], "RTMIN+%d", i); + signal_names[rtmax-i] = (char *)malloc(RTLEN); + if (signal_names[rtmax-i]) + sprintf (signal_names[rtmax-i], "RTMAX-%d", i); + } + + if (rtcnt < RTLIM/2-1 && rtcnt != (rtmax-rtmin)/2) + { + /* Need an extra RTMIN signal */ + signal_names[rtmin+rtcnt+1] = (char *)malloc(RTLEN); + if (signal_names[rtmin+rtcnt+1]) + sprintf (signal_names[rtmin+rtcnt+1], "RTMIN+%d", rtcnt+1); + } + } +#endif /* SIGRTMIN && SIGRTMAX */ + +/* AIX */ +#if defined (SIGLOST) /* resource lost (eg, record-lock lost) */ + signal_names[SIGLOST] = "LOST"; +#endif + +#if defined (SIGMSG) /* HFT input data pending */ + signal_names[SIGMSG] = "MSG"; +#endif + +#if defined (SIGDANGER) /* system crash imminent */ + signal_names[SIGDANGER] = "DANGER"; +#endif + +#if defined (SIGMIGRATE) /* migrate process to another CPU */ + signal_names[SIGMIGRATE] = "MIGRATE"; +#endif + +#if defined (SIGPRE) /* programming error */ + signal_names[SIGPRE] = "PRE"; +#endif + +#if defined (SIGVIRT) /* AIX virtual time alarm */ + signal_names[SIGVIRT] = "VIRT"; +#endif + +#if defined (SIGALRM1) /* m:n condition variables */ + signal_names[SIGALRM1] = "ALRM1"; +#endif + +#if defined (SIGWAITING) /* m:n scheduling */ + signal_names[SIGWAITING] = "WAITING"; +#endif + +#if defined (SIGGRANT) /* HFT monitor mode granted */ + signal_names[SIGGRANT] = "GRANT"; +#endif + +#if defined (SIGKAP) /* keep alive poll from native keyboard */ + signal_names[SIGKAP] = "KAP"; +#endif + +#if defined (SIGRETRACT) /* HFT monitor mode retracted */ + signal_names[SIGRETRACT] = "RETRACT"; +#endif + +#if defined (SIGSOUND) /* HFT sound sequence has completed */ + signal_names[SIGSOUND] = "SOUND"; +#endif + +#if defined (SIGSAK) /* Secure Attention Key */ + signal_names[SIGSAK] = "SAK"; +#endif + +/* SunOS5 */ +#if defined (SIGLWP) /* special signal used by thread library */ + signal_names[SIGLWP] = "LWP"; +#endif + +#if defined (SIGFREEZE) /* special signal used by CPR */ + signal_names[SIGFREEZE] = "FREEZE"; +#endif + +#if defined (SIGTHAW) /* special signal used by CPR */ + signal_names[SIGTHAW] = "THAW"; +#endif + +#if defined (SIGCANCEL) /* thread cancellation signal used by libthread */ + signal_names[SIGCANCEL] = "CANCEL"; +#endif + +/* HP-UX */ +#if defined (SIGDIL) /* DIL signal (?) */ + signal_names[SIGDIL] = "DIL"; +#endif + +/* System V */ +#if defined (SIGCLD) /* Like SIGCHLD. */ + signal_names[SIGCLD] = "CLD"; +#endif + +#if defined (SIGPWR) /* power state indication */ + signal_names[SIGPWR] = "PWR"; +#endif + +#if defined (SIGPOLL) /* Pollable event (for streams) */ + signal_names[SIGPOLL] = "POLL"; +#endif + +/* Unknown */ +#if defined (SIGWINDOW) + signal_names[SIGWINDOW] = "WINDOW"; +#endif + +/* Common */ +#if defined (SIGHUP) /* hangup */ + signal_names[SIGHUP] = "HUP"; +#endif + +#if defined (SIGINT) /* interrupt */ + signal_names[SIGINT] = "INT"; +#endif + +#if defined (SIGQUIT) /* quit */ + signal_names[SIGQUIT] = "QUIT"; +#endif + +#if defined (SIGILL) /* illegal instruction (not reset when caught) */ + signal_names[SIGILL] = "ILL"; +#endif + +#if defined (SIGTRAP) /* trace trap (not reset when caught) */ + signal_names[SIGTRAP] = "TRAP"; +#endif + +#if defined (SIGIOT) /* IOT instruction */ + signal_names[SIGIOT] = "IOT"; +#endif + +#if defined (SIGABRT) /* Cause current process to dump core. */ + signal_names[SIGABRT] = "ABRT"; +#endif + +#if defined (SIGEMT) /* EMT instruction */ + signal_names[SIGEMT] = "EMT"; +#endif + +#if defined (SIGFPE) /* floating point exception */ + signal_names[SIGFPE] = "FPE"; +#endif + +#if defined (SIGKILL) /* kill (cannot be caught or ignored) */ + signal_names[SIGKILL] = "KILL"; +#endif + +#if defined (SIGBUS) /* bus error */ + signal_names[SIGBUS] = "BUS"; +#endif + +#if defined (SIGSEGV) /* segmentation violation */ + signal_names[SIGSEGV] = "SEGV"; +#endif + +#if defined (SIGSYS) /* bad argument to system call */ + signal_names[SIGSYS] = "SYS"; +#endif + +#if defined (SIGPIPE) /* write on a pipe with no one to read it */ + signal_names[SIGPIPE] = "PIPE"; +#endif + +#if defined (SIGALRM) /* alarm clock */ + signal_names[SIGALRM] = "ALRM"; +#endif + +#if defined (SIGTERM) /* software termination signal from kill */ + signal_names[SIGTERM] = "TERM"; +#endif + +#if defined (SIGURG) /* urgent condition on IO channel */ + signal_names[SIGURG] = "URG"; +#endif + +#if defined (SIGSTOP) /* sendable stop signal not from tty */ + signal_names[SIGSTOP] = "STOP"; +#endif + +#if defined (SIGTSTP) /* stop signal from tty */ + signal_names[SIGTSTP] = "TSTP"; +#endif + +#if defined (SIGCONT) /* continue a stopped process */ + signal_names[SIGCONT] = "CONT"; +#endif + +#if defined (SIGCHLD) /* to parent on child stop or exit */ + signal_names[SIGCHLD] = "CHLD"; +#endif + +#if defined (SIGTTIN) /* to readers pgrp upon background tty read */ + signal_names[SIGTTIN] = "TTIN"; +#endif + +#if defined (SIGTTOU) /* like TTIN for output if (tp->t_local<OSTOP) */ + signal_names[SIGTTOU] = "TTOU"; +#endif + +#if defined (SIGIO) /* input/output possible signal */ + signal_names[SIGIO] = "IO"; +#endif + +#if defined (SIGXCPU) /* exceeded CPU time limit */ + signal_names[SIGXCPU] = "XCPU"; +#endif + +#if defined (SIGXFSZ) /* exceeded file size limit */ + signal_names[SIGXFSZ] = "XFSZ"; +#endif + +#if defined (SIGVTALRM) /* virtual time alarm */ + signal_names[SIGVTALRM] = "VTALRM"; +#endif + +#if defined (SIGPROF) /* profiling time alarm */ + signal_names[SIGPROF] = "PROF"; +#endif + +#if defined (SIGWINCH) /* window changed */ + signal_names[SIGWINCH] = "WINCH"; +#endif + +/* 4.4 BSD */ +#if defined (SIGINFO) && !defined (_SEQUENT_) /* information request */ + signal_names[SIGINFO] = "INFO"; +#endif + +#if defined (SIGUSR1) /* user defined signal 1 */ + signal_names[SIGUSR1] = "USR1"; +#endif + +#if defined (SIGUSR2) /* user defined signal 2 */ + signal_names[SIGUSR2] = "USR2"; +#endif + +#if defined (SIGKILLTHR) /* BeOS: Kill Thread */ + signal_names[SIGKILLTHR] = "KILLTHR"; +#endif + + for (i = 0; i < NSIG; i++) + if (signal_names[i] == (char *)NULL) + { + signal_names[i] = (char *)malloc (18); + if (signal_names[i]) + sprintf (signal_names[i], "%d", i); + } +} + +void +write_signames (stream) + FILE *stream; +{ + register int i; + + fprintf (stream, "/* This file was automatically created by %s.\n", + progname); + fprintf (stream, " Do not edit. Edit support/mksignames.c instead. */\n\n"); + fprintf (stream, "#include \n\n"); + fprintf (stream, + "/* A translation list so we can be polite to our users. */\n"); + fprintf (stream, "const char *const signal_names[NSIG + 1] = {\n"); + + for (i = 0; i <= LASTSIG; i++) + fprintf (stream, " \"%s\",\n", signal_names[i]); + + fprintf (stream, " (char *)0x0\n"); + fprintf (stream, "};\n"); +} + +int +main(int argc, char **argv) +{ + char *stream_name; + FILE *stream; + + progname = argv[0]; + + if (argc == 1) + { + stream_name = "signames.c"; + } + else if (argc == 2) + { + stream_name = argv[1]; + } + else + { + fprintf (stderr, "Usage: %s [output-file]\n", progname); + exit (1); + } + + stream = fopen (stream_name, "w"); + if (!stream) + { + fprintf (stderr, "%s: %s: cannot open for writing\n", + progname, stream_name); + exit (2); + } + + initialize_signames (); + write_signames (stream); + exit (0); +} diff --git a/shells/dash/files/src/mksyntax.c b/shells/dash/files/src/mksyntax.c new file mode 100644 index 0000000000000..a23c18caebb1b --- /dev/null +++ b/shells/dash/files/src/mksyntax.c @@ -0,0 +1,315 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * This program creates syntax.h and syntax.c. + */ + +#include +#include +#include +#include +#include "parser.h" + + +struct synclass { + char *name; + char *comment; +}; + +/* Syntax classes */ +struct synclass synclass[] = { + { "CWORD", "character is nothing special" }, + { "CNL", "newline character" }, + { "CBACK", "a backslash character" }, + { "CSQUOTE", "single quote" }, + { "CDQUOTE", "double quote" }, + { "CENDQUOTE", "a terminating quote" }, + { "CBQUOTE", "backwards single quote" }, + { "CVAR", "a dollar sign" }, + { "CENDVAR", "a '}' character" }, + { "CLP", "a left paren in arithmetic" }, + { "CRP", "a right paren in arithmetic" }, + { "CEOF", "end of file" }, + { "CCTL", "like CWORD, except it must be escaped" }, + { "CSPCL", "these terminate a word" }, + { "CIGN", "character should be ignored" }, + { NULL, NULL } +}; + + +/* + * Syntax classes for is_ functions. Warning: if you add new classes + * you may have to change the definition of the is_in_name macro. + */ +struct synclass is_entry[] = { + { "ISDIGIT", "a digit" }, + { "ISUPPER", "an upper case letter" }, + { "ISLOWER", "a lower case letter" }, + { "ISUNDER", "an underscore" }, + { "ISSPECL", "the name of a special parameter" }, + { NULL, NULL } +}; + +static char writer[] = "\ +/*\n\ + * This file was generated by the mksyntax program.\n\ + */\n\ +\n"; + + +static FILE *cfile; +static FILE *hfile; +static char *syntax[513]; + +static void filltable(char *); +static void init(void); +static void add(char *, char *); +static void print(char *); +static void output_type_macros(void); +int main(int, char **); + +int +main(int argc, char **argv) +{ + int i; + char buf[80]; + int pos; + + /* Create output files */ + if ((cfile = fopen("syntax.c", "w")) == NULL) { + perror("syntax.c"); + exit(2); + } + if ((hfile = fopen("syntax.h", "w")) == NULL) { + perror("syntax.h"); + exit(2); + } + fputs(writer, hfile); + fputs(writer, cfile); + + fputs("#include \n", hfile); + fputs("\n", hfile); + fputs("#ifdef CEOF\n", hfile); + fputs("#undef CEOF\n", hfile); + fputs("#endif\n", hfile); + fputs("\n", hfile); + + /* Generate the #define statements in the header file */ + fputs("/* Syntax classes */\n", hfile); + for (i = 0 ; synclass[i].name ; i++) { + sprintf(buf, "#define %s %d", synclass[i].name, i); + fputs(buf, hfile); + for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07) + putc('\t', hfile); + fprintf(hfile, "/* %s */\n", synclass[i].comment); + } + putc('\n', hfile); + fputs("/* Syntax classes for is_ functions */\n", hfile); + for (i = 0 ; is_entry[i].name ; i++) { + sprintf(buf, "#define %s %#o", is_entry[i].name, 1 << i); + fputs(buf, hfile); + for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07) + putc('\t', hfile); + fprintf(hfile, "/* %s */\n", is_entry[i].comment); + } + putc('\n', hfile); + fprintf(hfile, "#define SYNBASE %d\n", 130); + fprintf(hfile, "#define PEOF %d\n\n", -130); + fprintf(hfile, "#define PEOA %d\n\n", -129); + putc('\n', hfile); + fputs("#define BASESYNTAX (basesyntax + SYNBASE)\n", hfile); + fputs("#define DQSYNTAX (dqsyntax + SYNBASE)\n", hfile); + fputs("#define SQSYNTAX (sqsyntax + SYNBASE)\n", hfile); + fputs("#define ARISYNTAX (arisyntax + SYNBASE)\n", hfile); + putc('\n', hfile); + output_type_macros(); /* is_digit, etc. */ + putc('\n', hfile); + + /* Generate the syntax tables. */ + fputs("#include \"shell.h\"\n", cfile); + fputs("#include \"syntax.h\"\n\n", cfile); + init(); + fputs("/* syntax table used when not in quotes */\n", cfile); + add("\n", "CNL"); + add("\\", "CBACK"); + add("'", "CSQUOTE"); + add("\"", "CDQUOTE"); + add("`", "CBQUOTE"); + add("$", "CVAR"); + add("}", "CENDVAR"); + add("<>();&| \t", "CSPCL"); + syntax[1] = "CSPCL"; + print("basesyntax"); + init(); + fputs("\n/* syntax table used when in double quotes */\n", cfile); + add("\n", "CNL"); + add("\\", "CBACK"); + add("\"", "CENDQUOTE"); + add("`", "CBQUOTE"); + add("$", "CVAR"); + add("}", "CENDVAR"); + /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ + add("!*?[=~:/-]", "CCTL"); + print("dqsyntax"); + init(); + fputs("\n/* syntax table used when in single quotes */\n", cfile); + add("\n", "CNL"); + add("'", "CENDQUOTE"); + /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ + add("!*?[=~:/-]\\", "CCTL"); + print("sqsyntax"); + init(); + fputs("\n/* syntax table used when in arithmetic */\n", cfile); + add("\n", "CNL"); + add("\\", "CBACK"); + add("`", "CBQUOTE"); + add("$", "CVAR"); + add("}", "CENDVAR"); + add("(", "CLP"); + add(")", "CRP"); + print("arisyntax"); + filltable("0"); + fputs("\n/* character classification table */\n", cfile); + add("0123456789", "ISDIGIT"); + add("abcdefghijklmnopqrstucvwxyz", "ISLOWER"); + add("ABCDEFGHIJKLMNOPQRSTUCVWXYZ", "ISUPPER"); + add("_", "ISUNDER"); + add("#?$!-*@", "ISSPECL"); + print("is_type"); + exit(0); + /* NOTREACHED */ +} + + + +/* + * Clear the syntax table. + */ + +static void +filltable(char *dftval) +{ + int i; + + for (i = 0 ; i < 258; i++) + syntax[i] = dftval; +} + + +/* + * Initialize the syntax table with default values. + */ + +static void +init(void) +{ + int ctl; + + filltable("CWORD"); + syntax[0] = "CEOF"; + syntax[1] = "CIGN"; + for (ctl = CTL_FIRST; ctl <= CTL_LAST; ctl++ ) + syntax[130 + ctl] = "CCTL"; +} + + +/* + * Add entries to the syntax table. + */ + +static void +add(char *p, char *type) +{ + while (*p) + syntax[(signed char)*p++ + 130] = type; +} + + + +/* + * Output the syntax table. + */ + +static void +print(char *name) +{ + int i; + int col; + + fprintf(hfile, "extern const char %s[];\n", name); + fprintf(cfile, "const char %s[] = {\n", name); + col = 0; + for (i = 0 ; i < 258; i++) { + if (i == 0) { + fputs(" ", cfile); + } else if ((i & 03) == 0) { + fputs(",\n ", cfile); + col = 0; + } else { + putc(',', cfile); + while (++col < 9 * (i & 03)) + putc(' ', cfile); + } + fputs(syntax[i], cfile); + col += strlen(syntax[i]); + } + fputs("\n};\n", cfile); +} + + + +/* + * Output character classification macros (e.g. is_digit). If digits are + * contiguous, we can test for them quickly. + */ + +static char *macro[] = { + "#define is_digit(c)\t((unsigned)((c) - '0') <= 9)\n", + "#define is_alpha(c)\tisalpha((unsigned char)(c))\n", + "#define is_name(c)\t((c) == '_' || isalpha((unsigned char)(c)))\n", + "#define is_in_name(c)\t((c) == '_' || isalnum((unsigned char)(c)))\n", + "#define is_special(c)\t((is_type+SYNBASE)[(signed char)(c)] & (ISSPECL|ISDIGIT))\n", + NULL +}; + +static void +output_type_macros(void) +{ + char **pp; + + for (pp = macro ; *pp ; pp++) + fputs(*pp, hfile); + fputs("#define digit_val(c)\t((c) - '0')\n", hfile); +} diff --git a/shells/dash/files/src/mktokens b/shells/dash/files/src/mktokens new file mode 100644 index 0000000000000..cd52241a630ee --- /dev/null +++ b/shells/dash/files/src/mktokens @@ -0,0 +1,95 @@ +#!/bin/sh - +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu . All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)mktokens 8.1 (Berkeley) 5/31/93 + +# The following is a list of tokens. The second column is nonzero if the +# token marks the end of a list. The third column is the name to print in +# error messages. + +cat > /tmp/ka$$ <<\! +TEOF 1 end of file +TNL 0 newline +TSEMI 0 ";" +TBACKGND 0 "&" +TAND 0 "&&" +TOR 0 "||" +TPIPE 0 "|" +TLP 0 "(" +TRP 1 ")" +TENDCASE 1 ";;" +TENDBQUOTE 1 "`" +TREDIR 0 redirection +TWORD 0 word +TNOT 0 "!" +TCASE 0 "case" +TDO 1 "do" +TDONE 1 "done" +TELIF 1 "elif" +TELSE 1 "else" +TESAC 1 "esac" +TFI 1 "fi" +TFOR 0 "for" +TIF 0 "if" +TIN 0 "in" +TTHEN 1 "then" +TUNTIL 0 "until" +TWHILE 0 "while" +TBEGIN 0 "{" +TEND 1 "}" +! +nl=`wc -l /tmp/ka$$` +exec > token.h +awk '{print "#define " $1 " " NR-1}' /tmp/ka$$ + +exec > token_vars.h + +echo ' +/* Array indicating which tokens mark the end of a list */ +static const char tokendlist[] = {' +awk '{print "\t" $2 ","}' /tmp/ka$$ +echo '}; + +static const char *const tokname[] = {' +sed -e 's/"/\\"/g' \ + -e 's/[^ ]*[ ][ ]*[^ ]*[ ][ ]*\(.*\)/ "\1",/' \ + /tmp/ka$$ +echo '}; +' +sed 's/"//g' /tmp/ka$$ | awk ' +/TNOT/{print "#define KWDOFFSET " NR-1; print ""; + print "static const char *const parsekwd[] = {"} +/TNOT/,/neverfound/{if (last) print " \"" last "\","; last = $3} +END{print " \"" last "\"\n};"}' + +rm /tmp/ka$$ diff --git a/shells/dash/files/src/myhistedit.h b/shells/dash/files/src/myhistedit.h new file mode 100644 index 0000000000000..22e5c4386d609 --- /dev/null +++ b/shells/dash/files/src/myhistedit.h @@ -0,0 +1,46 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)myhistedit.h 8.2 (Berkeley) 5/4/95 + */ + +#include + +extern History *hist; +extern EditLine *el; +extern int displayhist; + +void histedit(void); +void sethistsize(const char *); +void setterm(const char *); +int histcmd(int, char **); +int not_fcnumber(char *); +int str_to_event(const char *, int); + diff --git a/shells/dash/files/src/mystring.c b/shells/dash/files/src/mystring.c new file mode 100644 index 0000000000000..0106bd27d2fea --- /dev/null +++ b/shells/dash/files/src/mystring.c @@ -0,0 +1,257 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * String functions. + * + * equal(s1, s2) Return true if strings are equal. + * scopy(from, to) Copy a string. + * scopyn(from, to, n) Like scopy, but checks for overflow. + * number(s) Convert a string of digits to an integer. + * is_number(s) Return true if s is a string of digits. + */ + +#include +#include +#include +#include +#include +#include +#include "shell.h" +#include "syntax.h" +#include "error.h" +#include "mystring.h" +#include "memalloc.h" +#include "parser.h" +#include "system.h" + + +char nullstr[1]; /* zero length string */ +const char spcstr[] = " "; +const char snlfmt[] = "%s\n"; +const char dolatstr[] = { CTLQUOTEMARK, CTLVAR, VSNORMAL, '@', '=', + CTLQUOTEMARK, '\0' }; +const char qchars[] = { CTLESC, CTLQUOTEMARK, 0 }; +const char illnum[] = "Illegal number: %s"; +const char homestr[] = "HOME"; + +/* + * equal - #defined in mystring.h + */ + +/* + * scopy - #defined in mystring.h + */ + + +#if 0 +/* + * scopyn - copy a string from "from" to "to", truncating the string + * if necessary. "To" is always nul terminated, even if + * truncation is performed. "Size" is the size of "to". + */ + +void +scopyn(const char *from, char *to, int size) +{ + + while (--size > 0) { + if ((*to++ = *from++) == '\0') + return; + } + *to = '\0'; +} +#endif + + +/* + * prefix -- see if pfx is a prefix of string. + */ + +char * +prefix(const char *string, const char *pfx) +{ + while (*pfx) { + if (*pfx++ != *string++) + return 0; + } + return (char *) string; +} + +void badnum(const char *s) +{ + sh_error(illnum, s); +} + +/* + * Convert a string into an integer of type intmax_t. Alow trailing spaces. + */ +intmax_t atomax(const char *s, int base) +{ + char *p; + intmax_t r; + + errno = 0; + r = strtoimax(s, &p, base); + + if (errno != 0) + badnum(s); + + /* + * Disallow completely blank strings in non-arithmetic (base != 0) + * contexts. + */ + if (p == s && base) + badnum(s); + + while (isspace((unsigned char)*p)) + p++; + + if (*p) + badnum(s); + + return r; +} + +intmax_t atomax10(const char *s) +{ + return atomax(s, 10); +} + +/* + * Convert a string of digits to an integer, printing an error message on + * failure. + */ + +int +number(const char *s) +{ + intmax_t n = atomax10(s); + + if (n < 0 || n > INT_MAX) + badnum(s); + + return n; +} + + + +/* + * Check for a valid number. This should be elsewhere. + */ + +int +is_number(const char *p) +{ + do { + if (! is_digit(*p)) + return 0; + } while (*++p != '\0'); + return 1; +} + + +/* + * Produce a possibly single quoted string suitable as input to the shell. + * The return string is allocated on the stack. + */ + +char * +single_quote(const char *s) { + char *p; + + STARTSTACKSTR(p); + + do { + char *q; + size_t len; + + len = strchrnul(s, '\'') - s; + + q = p = makestrspace(len + 3, p); + + *q++ = '\''; + q = mempcpy(q, s, len); + *q++ = '\''; + s += len; + + STADJUST(q - p, p); + + len = strspn(s, "'"); + if (!len) + break; + + q = p = makestrspace(len + 3, p); + + *q++ = '"'; + q = mempcpy(q, s, len); + *q++ = '"'; + s += len; + + STADJUST(q - p, p); + } while (*s); + + USTPUTC(0, p); + + return stackblock(); +} + +/* + * Like strdup but works with the ash stack. + */ + +char * +sstrdup(const char *p) +{ + size_t len = strlen(p) + 1; + return memcpy(stalloc(len), p, len); +} + +/* + * Wrapper around strcmp for qsort/bsearch/... + */ +int +pstrcmp(const void *a, const void *b) +{ + return strcmp(*(const char *const *) a, *(const char *const *) b); +} + +/* + * Find a string is in a sorted array. + */ +const char *const * +findstring(const char *s, const char *const *array, size_t nmemb) +{ + return bsearch(&s, array, nmemb, sizeof(const char *), pstrcmp); +} diff --git a/shells/dash/files/src/mystring.h b/shells/dash/files/src/mystring.h new file mode 100644 index 0000000000000..083ea98cff7e0 --- /dev/null +++ b/shells/dash/files/src/mystring.h @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)mystring.h 8.2 (Berkeley) 5/4/95 + */ + +#include +#include + +extern const char snlfmt[]; +extern const char spcstr[]; +extern const char dolatstr[]; +#define DOLATSTRLEN 6 +extern const char qchars[]; +extern const char illnum[]; +extern const char homestr[]; + +#if 0 +void scopyn(const char *, char *, int); +#endif +char *prefix(const char *, const char *); +void badnum(const char *s) __attribute__ ((noreturn)); +intmax_t atomax(const char *, int); +intmax_t atomax10(const char *); +int number(const char *); +int is_number(const char *); +char *single_quote(const char *); +char *sstrdup(const char *); +int pstrcmp(const void *, const void *); +const char *const *findstring(const char *, const char *const *, size_t); + +#define equal(s1, s2) (strcmp(s1, s2) == 0) +#define scopy(s1, s2) ((void)strcpy(s2, s1)) diff --git a/shells/dash/files/src/nodes.c.pat b/shells/dash/files/src/nodes.c.pat new file mode 100644 index 0000000000000..9125bc73821f6 --- /dev/null +++ b/shells/dash/files/src/nodes.c.pat @@ -0,0 +1,166 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)nodes.c.pat 8.2 (Berkeley) 5/4/95 + */ + +#include +/* + * Routine for dealing with parsed shell commands. + */ + +#include "shell.h" +#include "nodes.h" +#include "memalloc.h" +#include "machdep.h" +#include "mystring.h" +#include "system.h" + + +int funcblocksize; /* size of structures in function */ +int funcstringsize; /* size of strings in node */ +pointer funcblock; /* block to allocate function from */ +char *funcstring; /* block to allocate strings from */ + +%SIZES + + +STATIC void calcsize(union node *); +STATIC void sizenodelist(struct nodelist *); +STATIC union node *copynode(union node *); +STATIC struct nodelist *copynodelist(struct nodelist *); +STATIC char *nodesavestr(char *); + + + +/* + * Make a copy of a parse tree. + */ + +struct funcnode * +copyfunc(union node *n) +{ + struct funcnode *f; + size_t blocksize; + + funcblocksize = offsetof(struct funcnode, n); + funcstringsize = 0; + calcsize(n); + blocksize = funcblocksize; + f = ckmalloc(blocksize + funcstringsize); + funcblock = (char *) f + offsetof(struct funcnode, n); + funcstring = (char *) f + blocksize; + copynode(n); + f->count = 0; + return f; +} + + + +STATIC void +calcsize(n) + union node *n; +{ + %CALCSIZE +} + + + +STATIC void +sizenodelist(lp) + struct nodelist *lp; +{ + while (lp) { + funcblocksize += SHELL_ALIGN(sizeof(struct nodelist)); + calcsize(lp->n); + lp = lp->next; + } +} + + + +STATIC union node * +copynode(n) + union node *n; +{ + union node *new; + + %COPY + return new; +} + + +STATIC struct nodelist * +copynodelist(lp) + struct nodelist *lp; +{ + struct nodelist *start; + struct nodelist **lpp; + + lpp = &start; + while (lp) { + *lpp = funcblock; + funcblock = (char *) funcblock + + SHELL_ALIGN(sizeof(struct nodelist)); + (*lpp)->n = copynode(lp->n); + lp = lp->next; + lpp = &(*lpp)->next; + } + *lpp = NULL; + return start; +} + + + +STATIC char * +nodesavestr(s) + char *s; +{ + char *rtn = funcstring; + + funcstring = stpcpy(funcstring, s) + 1; + return rtn; +} + + + +/* + * Free a parse tree. + */ + +void +freefunc(struct funcnode *f) +{ + if (f && --f->count < 0) + ckfree(f); +} diff --git a/shells/dash/files/src/nodetypes b/shells/dash/files/src/nodetypes new file mode 100644 index 0000000000000..ceaf478c40445 --- /dev/null +++ b/shells/dash/files/src/nodetypes @@ -0,0 +1,151 @@ +# Copyright (c) 1991, 1993 +# The Regents of the University of California. All rights reserved. +# Copyright (c) 1997-2005 +# Herbert Xu . All rights reserved. +# +# This code is derived from software contributed to Berkeley by +# Kenneth Almquist. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# 3. Neither the name of the University nor the names of its contributors +# may be used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# @(#)nodetypes 8.2 (Berkeley) 5/4/95 + +# This file describes the nodes used in parse trees. Unindented lines +# contain a node type followed by a structure tag. Subsequent indented +# lines specify the fields of the structure. Several node types can share +# the same structure, in which case the fields of the structure should be +# specified only once. +# +# A field of a structure is described by the name of the field followed +# by a type. The currently implemented types are: +# nodeptr - a pointer to a node +# nodelist - a pointer to a list of nodes +# string - a pointer to a nul terminated string +# int - an integer +# other - any type that can be copied by assignment +# temp - a field that doesn't have to be copied when the node is copied +# The last two types should be followed by the text of a C declaration for +# the field. + +NCMD ncmd # a simple command + type int + linno int + assign nodeptr # variable assignments + args nodeptr # the arguments + redirect nodeptr # list of file redirections + +NPIPE npipe # a pipeline + type int + backgnd int # set to run pipeline in background + cmdlist nodelist # the commands in the pipeline + +NREDIR nredir # redirection (of a complex command) + type int + linno int + n nodeptr # the command + redirect nodeptr # list of file redirections + +NBACKGND nredir # run command in background +NSUBSHELL nredir # run command in a subshell + +NAND nbinary # the && operator +NOR nbinary # the || operator + +NSEMI nbinary # two commands separated by a semicolon + type int + ch1 nodeptr # the first child + ch2 nodeptr # the second child + +NIF nif # the if statement. Elif clauses are handled + type int # using multiple if nodes. + test nodeptr # if test + ifpart nodeptr # then ifpart + elsepart nodeptr # else elsepart + +NWHILE nbinary # the while statement. First child is the test +NUNTIL nbinary # the until statement + +NFOR nfor # the for statement + type int + linno int + args nodeptr # for var in args + body nodeptr # do body; done + var string # the for variable + +NCASE ncase # a case statement + type int + linno int + expr nodeptr # the word to switch on + cases nodeptr # the list of cases (NCLIST nodes) + +NCLIST nclist # a case + type int + next nodeptr # the next case in list + pattern nodeptr # list of patterns for this case + body nodeptr # code to execute for this case + + +NDEFUN ndefun # a function + type int + linno int + text string + body nodeptr + +NARG narg # represents a word + type int + next nodeptr # next word in list + text string # the text of the word + backquote nodelist # list of commands in back quotes + +NTO nfile # fd> fname +NCLOBBER nfile # fd>| fname +NFROM nfile # fd< fname +NFROMTO nfile # fd<> fname +NAPPEND nfile # fd>> fname + type int + next nodeptr # next redirection in list + fd int # file descriptor being redirected + fname nodeptr # file name, in a NARG node + expfname temp char *expfname # actual file name + +NTOFD ndup # fd<&dupfd +NFROMFD ndup # fd>&dupfd + type int + next nodeptr # next redirection in list + fd int # file descriptor being redirected + dupfd int # file descriptor to duplicate + vname nodeptr # file name if fd>&$var + + +NHERE nhere # fd<<\! +NXHERE nhere # fd<. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include + +#include "shell.h" +#define DEFINE_OPTIONS +#include "options.h" +#undef DEFINE_OPTIONS +#include "nodes.h" /* for other header files */ +#include "eval.h" +#include "jobs.h" +#include "input.h" +#include "output.h" +#include "trap.h" +#include "var.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#ifndef SMALL +#include "myhistedit.h" +#endif +#include "show.h" + +char *arg0; /* value of $0 */ +struct shparam shellparam; /* current positional parameters */ +char **argptr; /* argument list for builtin commands */ +char *optionarg; /* set by nextopt (like getopt) */ +char *optptr; /* used by nextopt */ + +char *minusc; /* argument to -c option */ + +static const char *const optnames[NOPTS] = { + "errexit", + "noglob", + "ignoreeof", + "interactive", + "monitor", + "noexec", + "stdin", + "xtrace", + "verbose", + "vi", + "emacs", + "noclobber", + "allexport", + "notify", + "nounset", + "nolog", + "debug", +}; + +const char optletters[NOPTS] = { + 'e', + 'f', + 'I', + 'i', + 'm', + 'n', + 's', + 'x', + 'v', + 'V', + 'E', + 'C', + 'a', + 'b', + 'u', + 0, + 0, +}; + +char optlist[NOPTS]; + + +static int options(int); +STATIC void minus_o(char *, int); +STATIC void setoption(int, int); +STATIC int getopts(char *, char *, char **); + + +/* + * Process the shell command line arguments. + */ + +int +procargs(int argc, char **argv) +{ + int i; + const char *xminusc; + char **xargv; + int login; + + xargv = argv; + login = xargv[0] && xargv[0][0] == '-'; + arg0 = xargv[0]; + if (argc > 0) + xargv++; + for (i = 0; i < NOPTS; i++) + optlist[i] = 2; + argptr = xargv; + login |= options(1); + xargv = argptr; + xminusc = minusc; + if (*xargv == NULL) { + if (xminusc) + sh_error("-c requires an argument"); + sflag = 1; + } + if (iflag == 2 && sflag == 1 && isatty(0) && isatty(1)) + iflag = 1; + if (mflag == 2) + mflag = iflag; + for (i = 0; i < NOPTS; i++) + if (optlist[i] == 2) + optlist[i] = 0; +#if DEBUG == 2 + debug = 1; +#endif + /* POSIX 1003.2: first arg after -c cmd is $0, remainder $1... */ + if (xminusc) { + minusc = *xargv++; + if (*xargv) + goto setarg0; + } else if (!sflag) { + setinputfile(*xargv, 0); +setarg0: + arg0 = *xargv++; + commandname = arg0; + } + + shellparam.p = xargv; + shellparam.optind = 1; + shellparam.optoff = -1; + /* assert(shellparam.malloc == 0 && shellparam.nparam == 0); */ + while (*xargv) { + shellparam.nparam++; + xargv++; + } + optschanged(); + + return login; +} + + +void +optschanged(void) +{ +#ifdef DEBUG + opentrace(); +#endif + setinteractive(iflag); +#ifndef SMALL + histedit(); +#endif + setjobctl(mflag); +} + +/* + * Process shell options. The global variable argptr contains a pointer + * to the argument list; we advance it past the options. + */ + +STATIC int +options(int cmdline) +{ + char *p; + int val; + int c; + int login = 0; + + if (cmdline) + minusc = NULL; + while ((p = *argptr) != NULL) { + argptr++; + if ((c = *p++) == '-') { + val = 1; + if (p[0] == '\0' || (p[0] == '-' && p[1] == '\0')) { + if (!cmdline) { + /* "-" means turn off -x and -v */ + if (p[0] == '\0') + xflag = vflag = 0; + /* "--" means reset params */ + else if (*argptr == NULL) + setparam(argptr); + } + break; /* "-" or "--" terminates options */ + } + } else if (c == '+') { + val = 0; + } else { + argptr--; + break; + } + while ((c = *p++) != '\0') { + if (c == 'c' && cmdline) { + minusc = p; /* command is after shell args*/ + } else if (c == 'l' && cmdline) { + login = 1; + } else if (c == 'o') { + minus_o(*argptr, val); + if (*argptr) + argptr++; + } else { + setoption(c, val); + } + } + } + + return login; +} + +STATIC void +minus_o(char *name, int val) +{ + int i; + + if (name == NULL) { + if (val) { + out1str("Current option settings\n"); + for (i = 0; i < NOPTS; i++) + out1fmt("%-16s%s\n", optnames[i], + optlist[i] ? "on" : "off"); + } else { + for (i = 0; i < NOPTS; i++) + out1fmt("set %s %s\n", + optlist[i] ? "-o" : "+o", + optnames[i]); + + } + } else { + for (i = 0; i < NOPTS; i++) + if (equal(name, optnames[i])) { + optlist[i] = val; + return; + } + sh_error("Illegal option -o %s", name); + } +} + + +STATIC void +setoption(int flag, int val) +{ + int i; + + for (i = 0; i < NOPTS; i++) + if (optletters[i] == flag) { + optlist[i] = val; + if (val) { + /* #%$ hack for ksh semantics */ + if (flag == 'V') + Eflag = 0; + else if (flag == 'E') + Vflag = 0; + } + return; + } + sh_error("Illegal option -%c", flag); + /* NOTREACHED */ +} + + + +/* + * Set the shell parameters. + */ + +void +setparam(char **argv) +{ + char **newparam; + char **ap; + int nparam; + + for (nparam = 0 ; argv[nparam] ; nparam++); + ap = newparam = ckmalloc((nparam + 1) * sizeof *ap); + while (*argv) { + *ap++ = savestr(*argv++); + } + *ap = NULL; + freeparam(&shellparam); + shellparam.malloc = 1; + shellparam.nparam = nparam; + shellparam.p = newparam; + shellparam.optind = 1; + shellparam.optoff = -1; +} + + +/* + * Free the list of positional parameters. + */ + +void +freeparam(volatile struct shparam *param) +{ + char **ap; + + if (param->malloc) { + for (ap = param->p ; *ap ; ap++) + ckfree(*ap); + ckfree(param->p); + } +} + + + +/* + * The shift builtin command. + */ + +int +shiftcmd(int argc, char **argv) +{ + int n; + char **ap1, **ap2; + + n = 1; + if (argc > 1) + n = number(argv[1]); + if (n > shellparam.nparam) + sh_error("can't shift that many"); + INTOFF; + shellparam.nparam -= n; + for (ap1 = shellparam.p ; --n >= 0 ; ap1++) { + if (shellparam.malloc) + ckfree(*ap1); + } + ap2 = shellparam.p; + while ((*ap2++ = *ap1++) != NULL); + shellparam.optind = 1; + shellparam.optoff = -1; + INTON; + return 0; +} + + + +/* + * The set command builtin. + */ + +int +setcmd(int argc, char **argv) +{ + if (argc == 1) + return showvars(nullstr, 0, VUNSET); + INTOFF; + options(0); + optschanged(); + if (*argptr != NULL) { + setparam(argptr); + } + INTON; + return 0; +} + + +void +getoptsreset(value) + const char *value; +{ + shellparam.optind = number(value) ?: 1; + shellparam.optoff = -1; +} + +/* + * The getopts builtin. Shellparam.optnext points to the next argument + * to be processed. Shellparam.optptr points to the next character to + * be processed in the current argument. If shellparam.optnext is NULL, + * then it's the first time getopts has been called. + */ + +int +getoptscmd(int argc, char **argv) +{ + char **optbase; + + if (argc < 3) + sh_error("Usage: getopts optstring var [arg]"); + else if (argc == 3) { + optbase = shellparam.p; + if ((unsigned)shellparam.optind > shellparam.nparam + 1) { + shellparam.optind = 1; + shellparam.optoff = -1; + } + } + else { + optbase = &argv[3]; + if ((unsigned)shellparam.optind > argc - 2) { + shellparam.optind = 1; + shellparam.optoff = -1; + } + } + + return getopts(argv[1], argv[2], optbase); +} + +STATIC int +getopts(char *optstr, char *optvar, char **optfirst) +{ + char *p, *q; + char c = '?'; + int done = 0; + char s[2]; + char **optnext; + int ind = shellparam.optind; + int off = shellparam.optoff; + + shellparam.optind = -1; + optnext = optfirst + ind - 1; + + if (ind <= 1 || off < 0 || strlen(optnext[-1]) < off) + p = NULL; + else + p = optnext[-1] + off; + if (p == NULL || *p == '\0') { + /* Current word is done, advance */ + p = *optnext; + if (p == NULL || *p != '-' || *++p == '\0') { +atend: + p = NULL; + done = 1; + goto out; + } + optnext++; + if (p[0] == '-' && p[1] == '\0') /* check for "--" */ + goto atend; + } + + c = *p++; + for (q = optstr; *q != c; ) { + if (*q == '\0') { + if (optstr[0] == ':') { + s[0] = c; + s[1] = '\0'; + setvar("OPTARG", s, 0); + } else { + outfmt(&errout, "Illegal option -%c\n", c); + (void) unsetvar("OPTARG"); + } + c = '?'; + goto out; + } + if (*++q == ':') + q++; + } + + if (*++q == ':') { + if (*p == '\0' && (p = *optnext) == NULL) { + if (optstr[0] == ':') { + s[0] = c; + s[1] = '\0'; + setvar("OPTARG", s, 0); + c = ':'; + } else { + outfmt(&errout, "No arg for -%c option\n", c); + (void) unsetvar("OPTARG"); + c = '?'; + } + goto out; + } + + if (p == *optnext) + optnext++; + setvar("OPTARG", p, 0); + p = NULL; + } else + setvar("OPTARG", nullstr, 0); + +out: + ind = optnext - optfirst + 1; + setvarint("OPTIND", ind, VNOFUNC); + s[0] = c; + s[1] = '\0'; + setvar(optvar, s, 0); + + shellparam.optoff = p ? p - *(optnext - 1) : -1; + shellparam.optind = ind; + + return done; +} + +/* + * XXX - should get rid of. have all builtins use getopt(3). the + * library getopt must have the BSD extension static variable "optreset" + * otherwise it can't be used within the shell safely. + * + * Standard option processing (a la getopt) for builtin routines. The + * only argument that is passed to nextopt is the option string; the + * other arguments are unnecessary. It return the character, or '\0' on + * end of input. + */ + +int +nextopt(const char *optstring) +{ + char *p; + const char *q; + char c; + + if ((p = optptr) == NULL || *p == '\0') { + p = *argptr; + if (p == NULL || *p != '-' || *++p == '\0') + return '\0'; + argptr++; + if (p[0] == '-' && p[1] == '\0') /* check for "--" */ + return '\0'; + } + c = *p++; + for (q = optstring ; *q != c ; ) { + if (*q == '\0') + sh_error("Illegal option -%c", c); + if (*++q == ':') + q++; + } + if (*++q == ':') { + if (*p == '\0' && (p = *argptr++) == NULL) + sh_error("No arg for -%c option", c); + optionarg = p; + p = NULL; + } + optptr = p; + return c; +} diff --git a/shells/dash/files/src/options.h b/shells/dash/files/src/options.h new file mode 100644 index 0000000000000..975fe339f301e --- /dev/null +++ b/shells/dash/files/src/options.h @@ -0,0 +1,86 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)options.h 8.2 (Berkeley) 5/4/95 + */ + +struct shparam { + int nparam; /* # of positional parameters (without $0) */ + unsigned char malloc; /* if parameter list dynamically allocated */ + char **p; /* parameter list */ + int optind; /* next parameter to be processed by getopts */ + int optoff; /* used by getopts */ +}; + + + +#define eflag optlist[0] +#define fflag optlist[1] +#define Iflag optlist[2] +#define iflag optlist[3] +#define mflag optlist[4] +#define nflag optlist[5] +#define sflag optlist[6] +#define xflag optlist[7] +#define vflag optlist[8] +#define Vflag optlist[9] +#define Eflag optlist[10] +#define Cflag optlist[11] +#define aflag optlist[12] +#define bflag optlist[13] +#define uflag optlist[14] +#define nolog optlist[15] +#define debug optlist[16] + +#define NOPTS 17 + +extern const char optletters[NOPTS]; +extern char optlist[NOPTS]; + + +extern char *minusc; /* argument to -c option */ +extern char *arg0; /* $0 */ +extern struct shparam shellparam; /* $@ */ +extern char **argptr; /* argument list for builtin commands */ +extern char *optionarg; /* set by nextopt */ +extern char *optptr; /* used by nextopt */ + +int procargs(int, char **); +void optschanged(void); +void setparam(char **); +void freeparam(volatile struct shparam *); +int shiftcmd(int, char **); +int setcmd(int, char **); +int getoptscmd(int, char **); +int nextopt(const char *); +void getoptsreset(const char *); diff --git a/shells/dash/files/src/output.c b/shells/dash/files/src/output.c new file mode 100644 index 0000000000000..f62e7eab0b4eb --- /dev/null +++ b/shells/dash/files/src/output.c @@ -0,0 +1,399 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Shell output routines. We use our own output routines because: + * When a builtin command is interrupted we have to discard + * any pending output. + * When a builtin command appears in back quotes, we want to + * save the output of the command in a region obtained + * via malloc, rather than doing a fork and reading the + * output of the command via a pipe. + * Our output routines may be smaller than the stdio routines. + */ + +#include /* quad_t */ +#include /* BSD4_4 */ +#include + +#include /* defines BUFSIZ */ +#include +#include +#include +#ifdef USE_GLIBC_STDIO +#include +#endif +#include + +#include "shell.h" +#include "syntax.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "main.h" +#include "system.h" + + +#define OUTBUFSIZ BUFSIZ +#define MEM_OUT -3 /* output to dynamically allocated memory */ + + +#ifdef USE_GLIBC_STDIO +struct output output = { + stream: 0, nextc: 0, end: 0, buf: 0, bufsize: 0, fd: 1, flags: 0 +}; +struct output errout = { + stream: 0, nextc: 0, end: 0, buf: 0, bufsize: 0, fd: 2, flags: 0 +} +#ifdef notyet +struct output memout = { + stream: 0, nextc: 0, end: 0, buf: 0, bufsize: 0, fd: MEM_OUT, flags: 0 +}; +#endif +#else +struct output output = { + nextc: 0, end: 0, buf: 0, bufsize: OUTBUFSIZ, fd: 1, flags: 0 +}; +struct output errout = { + nextc: 0, end: 0, buf: 0, bufsize: 0, fd: 2, flags: 0 +}; +struct output preverrout; +#ifdef notyet +struct output memout = { + nextc: 0, end: 0, buf: 0, bufsize: 0, fd: MEM_OUT, flags: 0 +}; +#endif +#endif +struct output *out1 = &output; +struct output *out2 = &errout; + + +#ifndef USE_GLIBC_STDIO +static void __outstr(const char *, size_t, struct output *); +#endif +static int xvsnprintf(char *, size_t, const char *, va_list); + + +#ifdef mkinit + +INCLUDE "output.h" +INCLUDE "memalloc.h" + +INIT { +#ifdef USE_GLIBC_STDIO + initstreams(); +#endif +} + +RESET { +#ifdef notyet + out1 = &output; + out2 = &errout; +#ifdef USE_GLIBC_STDIO + if (memout.stream != NULL) + __closememout(); +#endif + if (memout.buf != NULL) { + ckfree(memout.buf); + memout.buf = NULL; + } +#endif +} + +#endif + + +#ifndef USE_GLIBC_STDIO +static void +__outstr(const char *p, size_t len, struct output *dest) +{ + size_t bufsize; + size_t offset; + size_t nleft; + + nleft = dest->end - dest->nextc; + if (nleft >= len) { +buffered: + dest->nextc = mempcpy(dest->nextc, p, len); + return; + } + + bufsize = dest->bufsize; + if (!bufsize) { + ; + } else if (dest->buf == NULL) { + if (dest->fd == MEM_OUT && len > bufsize) { + bufsize = len; + } + offset = 0; + goto alloc; + } else if (dest->fd == MEM_OUT) { + offset = bufsize; + if (bufsize >= len) { + bufsize <<= 1; + } else { + bufsize += len; + } + if (bufsize < offset) + goto err; +alloc: + INTOFF; + dest->buf = ckrealloc(dest->buf, bufsize); + dest->bufsize = bufsize; + dest->end = dest->buf + bufsize; + dest->nextc = dest->buf + offset; + INTON; + } else { + flushout(dest); + } + + nleft = dest->end - dest->nextc; + if (nleft > len) + goto buffered; + + if ((xwrite(dest->fd, p, len))) { +err: + dest->flags |= OUTPUT_ERR; + } +} +#endif + + +void +outstr(const char *p, struct output *file) +{ +#ifdef USE_GLIBC_STDIO + INTOFF; + fputs(p, file->stream); + INTON; +#else + size_t len; + + len = strlen(p); + __outstr(p, len, file); +#endif +} + + +#ifndef USE_GLIBC_STDIO + + +void +outcslow(int c, struct output *dest) +{ + char buf = c; + __outstr(&buf, 1, dest); +} +#endif + + +void +flushall(void) +{ + flushout(&output); +#ifdef FLUSHERR + flushout(&errout); +#endif +} + + +void +flushout(struct output *dest) +{ +#ifdef USE_GLIBC_STDIO + INTOFF; + fflush(dest->stream); + INTON; +#else + size_t len; + + len = dest->nextc - dest->buf; + if (!len || dest->fd < 0) + return; + dest->nextc = dest->buf; + if ((xwrite(dest->fd, dest->buf, len))) + dest->flags |= OUTPUT_ERR; +#endif +} + + +void +outfmt(struct output *file, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + doformat(file, fmt, ap); + va_end(ap); +} + + +void +out1fmt(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + doformat(out1, fmt, ap); + va_end(ap); +} + + +int +fmtstr(char *outbuf, size_t length, const char *fmt, ...) +{ + va_list ap; + int ret; + + va_start(ap, fmt); + ret = xvsnprintf(outbuf, length, fmt, ap); + va_end(ap); + return ret; +} + + +#ifndef USE_GLIBC_STDIO +void +doformat(struct output *dest, const char *f, va_list ap) +{ + struct stackmark smark; + char *s; + int len, ret; + size_t size; + va_list ap2; + + va_copy(ap2, ap); + size = dest->end - dest->nextc; + len = xvsnprintf(dest->nextc, size, f, ap2); + va_end(ap2); + if (len < 0) { + dest->flags |= OUTPUT_ERR; + return; + } + if (len < size) { + dest->nextc += len; + return; + } + setstackmark(&smark); + s = stalloc((len >= stackblocksize() ? len : stackblocksize()) + 1); + ret = xvsnprintf(s, len + 1, f, ap); + if (ret == len) + __outstr(s, len, dest); + else + dest->flags |= OUTPUT_ERR; + popstackmark(&smark); +} +#endif + + + +/* + * Version of write which resumes after a signal is caught. + */ + +int +xwrite(int fd, const void *p, size_t n) +{ + const char *buf = p; + + while (n) { + ssize_t i; + size_t m; + + m = n; + if (m > SSIZE_MAX) + m = SSIZE_MAX; + do { + i = write(fd, buf, m); + } while (i < 0 && errno == EINTR); + if (i < 0) + return -1; + buf += i; + n -= i; + } + return 0; +} + + +#ifdef notyet +#ifdef USE_GLIBC_STDIO +void initstreams() { + output.stream = stdout; + errout.stream = stderr; +} + + +void +openmemout(void) { + INTOFF; + memout.stream = open_memstream(&memout.buf, &memout.bufsize); + INTON; +} + + +int +__closememout(void) { + int error; + error = fclose(memout.stream); + memout.stream = NULL; + return error; +} +#endif +#endif + + +static int +xvsnprintf(char *outbuf, size_t length, const char *fmt, va_list ap) +{ + int ret; + +#ifdef __sun + /* + * vsnprintf() on older versions of Solaris returns -1 when + * passed a length of 0. To avoid this, use a dummy + * 1-character buffer instead. + */ + char dummy[1]; + + if (length == 0) { + outbuf = dummy; + length = sizeof(dummy); + } +#endif + + INTOFF; + ret = vsnprintf(outbuf, length, fmt, ap); + INTON; + return ret; +} diff --git a/shells/dash/files/src/output.h b/shells/dash/files/src/output.h new file mode 100644 index 0000000000000..f853e9df65c12 --- /dev/null +++ b/shells/dash/files/src/output.h @@ -0,0 +1,123 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)output.h 8.2 (Berkeley) 5/4/95 + */ + +#ifndef OUTPUT_INCL + +#include +#ifdef USE_GLIBC_STDIO +#include +#endif +#include + +struct output { +#ifdef USE_GLIBC_STDIO + FILE *stream; +#endif + char *nextc; + char *end; + char *buf; + size_t bufsize; + int fd; + int flags; +}; + +extern struct output output; +extern struct output errout; +extern struct output preverrout; +#ifdef notyet +extern struct output memout; +#endif +extern struct output *out1; +extern struct output *out2; + +void outstr(const char *, struct output *); +#ifndef USE_GLIBC_STDIO +void outcslow(int, struct output *); +#endif +void flushall(void); +void flushout(struct output *); +void outfmt(struct output *, const char *, ...) + __attribute__((__format__(__printf__,2,3))); +void out1fmt(const char *, ...) + __attribute__((__format__(__printf__,1,2))); +int fmtstr(char *, size_t, const char *, ...) + __attribute__((__format__(__printf__,3,4))); +#ifndef USE_GLIBC_STDIO +void doformat(struct output *, const char *, va_list); +#endif +int xwrite(int, const void *, size_t); +#ifdef notyet +#ifdef USE_GLIBC_STDIO +void initstreams(void); +void openmemout(void); +int __closememout(void); +#endif +#endif + +static inline void +freestdout() +{ + output.nextc = output.buf; + output.flags = 0; +} + +#define OUTPUT_ERR 01 /* error occurred on output */ + +#ifdef USE_GLIBC_STDIO +static inline void outc(int ch, struct output *file) +{ + putc(ch, file->stream); +} +#define doformat(d, f, a) vfprintf((d)->stream, (f), (a)) +#else +static inline void outc(int ch, struct output *file) +{ + if (file->nextc == file->end) + outcslow(ch, file); + else { + *file->nextc = ch; + file->nextc++; + } +} +#endif +#define out1c(c) outc((c), out1) +#define out2c(c) outcslow((c), out2) +#define out1str(s) outstr((s), out1) +#define out2str(s) outstr((s), out2) +#define outerr(f) (f)->flags + +#define OUTPUT_INCL +#endif diff --git a/shells/dash/files/src/parser.c b/shells/dash/files/src/parser.c new file mode 100644 index 0000000000000..572cbcd5986c6 --- /dev/null +++ b/shells/dash/files/src/parser.c @@ -0,0 +1,1569 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if HAVE_ALLOCA_H +#include +#endif + +#include + +#include "shell.h" +#include "parser.h" +#include "nodes.h" +#include "expand.h" /* defines rmescapes() */ +#include "exec.h" /* defines find_builtin() */ +#include "syntax.h" +#include "options.h" +#include "input.h" +#include "output.h" +#include "var.h" +#include "error.h" +#include "memalloc.h" +#include "mystring.h" +#include "alias.h" +#include "show.h" +#include "builtins.h" +#include "system.h" +#ifndef SMALL +#include "myhistedit.h" +#endif + +/* + * Shell command parser. + */ + +/* values returned by readtoken */ +#include "token_vars.h" + + + +/* Used by expandstr to get here-doc like behaviour. */ +#define FAKEEOFMARK (char *)1 + + + +struct heredoc { + struct heredoc *next; /* next here document in list */ + union node *here; /* redirection node */ + char *eofmark; /* string indicating end of input */ + int striptabs; /* if set, strip leading tabs */ +}; + + + +struct heredoc *heredoclist; /* list of here documents to read */ +int doprompt; /* if set, prompt the user */ +int needprompt; /* true if interactive and at start of line */ +int lasttoken; /* last token read */ +int tokpushback; /* last token pushed back */ +char *wordtext; /* text of last word returned by readtoken */ +int checkkwd; +struct nodelist *backquotelist; +union node *redirnode; +struct heredoc *heredoc; +int quoteflag; /* set if (part of) last token was quoted */ + + +STATIC union node *list(int); +STATIC union node *andor(void); +STATIC union node *pipeline(void); +STATIC union node *command(void); +STATIC union node *simplecmd(void); +STATIC union node *makename(void); +STATIC void parsefname(void); +STATIC void parseheredoc(void); +STATIC int peektoken(void); +STATIC int readtoken(void); +STATIC int xxreadtoken(void); +STATIC int readtoken1(int, char const *, char *, int); +STATIC void synexpect(int) __attribute__((__noreturn__)); +STATIC void synerror(const char *) __attribute__((__noreturn__)); +STATIC void setprompt(int); + + +static inline int +isassignment(const char *p) +{ + const char *q = endofname(p); + if (p == q) + return 0; + return *q == '='; +} + +static inline int realeofmark(const char *eofmark) +{ + return eofmark && eofmark != FAKEEOFMARK; +} + + +/* + * Read and parse a command. Returns NEOF on end of file. (NULL is a + * valid parse tree indicating a blank line.) + */ + +union node * +parsecmd(int interact) +{ + int t; + + tokpushback = 0; + doprompt = interact; + if (doprompt) + setprompt(doprompt); + needprompt = 0; + t = readtoken(); + if (t == TEOF) + return NEOF; + if (t == TNL) + return NULL; + tokpushback++; + return list(1); +} + + +STATIC union node * +list(int nlflag) +{ + union node *n1, *n2, *n3; + int tok; + + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (nlflag == 2 && tokendlist[peektoken()]) + return NULL; + n1 = NULL; + for (;;) { + n2 = andor(); + tok = readtoken(); + if (tok == TBACKGND) { + if (n2->type == NPIPE) { + n2->npipe.backgnd = 1; + } else { + if (n2->type != NREDIR) { + n3 = stalloc(sizeof(struct nredir)); + n3->nredir.n = n2; + n3->nredir.redirect = NULL; + n2 = n3; + } + n2->type = NBACKGND; + } + } + if (n1 == NULL) { + n1 = n2; + } + else { + n3 = (union node *)stalloc(sizeof (struct nbinary)); + n3->type = NSEMI; + n3->nbinary.ch1 = n1; + n3->nbinary.ch2 = n2; + n1 = n3; + } + switch (tok) { + case TBACKGND: + case TSEMI: + tok = readtoken(); + /* fall through */ + case TNL: + if (tok == TNL) { + parseheredoc(); + if (nlflag == 1) + return n1; + } else { + tokpushback++; + } + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (tokendlist[peektoken()]) + return n1; + break; + case TEOF: + if (heredoclist) + parseheredoc(); + else + pungetc(); /* push back EOF on input */ + tokpushback++; + return n1; + default: + if (nlflag == 1) + synexpect(-1); + tokpushback++; + return n1; + } + } +} + + + +STATIC union node * +andor(void) +{ + union node *n1, *n2, *n3; + int t; + + n1 = pipeline(); + for (;;) { + if ((t = readtoken()) == TAND) { + t = NAND; + } else if (t == TOR) { + t = NOR; + } else { + tokpushback++; + return n1; + } + checkkwd = CHKNL | CHKKWD | CHKALIAS; + n2 = pipeline(); + n3 = (union node *)stalloc(sizeof (struct nbinary)); + n3->type = t; + n3->nbinary.ch1 = n1; + n3->nbinary.ch2 = n2; + n1 = n3; + } +} + + + +STATIC union node * +pipeline(void) +{ + union node *n1, *n2, *pipenode; + struct nodelist *lp, *prev; + int negate; + + negate = 0; + TRACE(("pipeline: entered\n")); + if (readtoken() == TNOT) { + negate = !negate; + checkkwd = CHKKWD | CHKALIAS; + } else + tokpushback++; + n1 = command(); + if (readtoken() == TPIPE) { + pipenode = (union node *)stalloc(sizeof (struct npipe)); + pipenode->type = NPIPE; + pipenode->npipe.backgnd = 0; + lp = (struct nodelist *)stalloc(sizeof (struct nodelist)); + pipenode->npipe.cmdlist = lp; + lp->n = n1; + do { + prev = lp; + lp = (struct nodelist *)stalloc(sizeof (struct nodelist)); + checkkwd = CHKNL | CHKKWD | CHKALIAS; + lp->n = command(); + prev->next = lp; + } while (readtoken() == TPIPE); + lp->next = NULL; + n1 = pipenode; + } + tokpushback++; + if (negate) { + n2 = (union node *)stalloc(sizeof (struct nnot)); + n2->type = NNOT; + n2->nnot.com = n1; + return n2; + } else + return n1; +} + + + +STATIC union node * +command(void) +{ + union node *n1, *n2; + union node *ap, **app; + union node *cp, **cpp; + union node *redir, **rpp; + union node **rpp2; + int t; + int savelinno; + + redir = NULL; + rpp2 = &redir; + + savelinno = plinno; + + switch (readtoken()) { + default: + synexpect(-1); + /* NOTREACHED */ + case TIF: + n1 = (union node *)stalloc(sizeof (struct nif)); + n1->type = NIF; + n1->nif.test = list(0); + if (readtoken() != TTHEN) + synexpect(TTHEN); + n1->nif.ifpart = list(0); + n2 = n1; + while (readtoken() == TELIF) { + n2->nif.elsepart = (union node *)stalloc(sizeof (struct nif)); + n2 = n2->nif.elsepart; + n2->type = NIF; + n2->nif.test = list(0); + if (readtoken() != TTHEN) + synexpect(TTHEN); + n2->nif.ifpart = list(0); + } + if (lasttoken == TELSE) + n2->nif.elsepart = list(0); + else { + n2->nif.elsepart = NULL; + tokpushback++; + } + t = TFI; + break; + case TWHILE: + case TUNTIL: { + int got; + n1 = (union node *)stalloc(sizeof (struct nbinary)); + n1->type = (lasttoken == TWHILE)? NWHILE : NUNTIL; + n1->nbinary.ch1 = list(0); + if ((got=readtoken()) != TDO) { +TRACE(("expecting DO got %s %s\n", tokname[got], got == TWORD ? wordtext : "")); + synexpect(TDO); + } + n1->nbinary.ch2 = list(0); + t = TDONE; + break; + } + case TFOR: + if (readtoken() != TWORD || quoteflag || ! goodname(wordtext)) + synerror("Bad for loop variable"); + n1 = (union node *)stalloc(sizeof (struct nfor)); + n1->type = NFOR; + n1->nfor.linno = savelinno; + n1->nfor.var = wordtext; + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (readtoken() == TIN) { + app = ≈ + while (readtoken() == TWORD) { + n2 = (union node *)stalloc(sizeof (struct narg)); + n2->type = NARG; + n2->narg.text = wordtext; + n2->narg.backquote = backquotelist; + *app = n2; + app = &n2->narg.next; + } + *app = NULL; + n1->nfor.args = ap; + if (lasttoken != TNL && lasttoken != TSEMI) + synexpect(-1); + } else { + n2 = (union node *)stalloc(sizeof (struct narg)); + n2->type = NARG; + n2->narg.text = (char *)dolatstr; + n2->narg.backquote = NULL; + n2->narg.next = NULL; + n1->nfor.args = n2; + /* + * Newline or semicolon here is optional (but note + * that the original Bourne shell only allowed NL). + */ + if (lasttoken != TSEMI) + tokpushback++; + } + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (readtoken() != TDO) + synexpect(TDO); + n1->nfor.body = list(0); + t = TDONE; + break; + case TCASE: + n1 = (union node *)stalloc(sizeof (struct ncase)); + n1->type = NCASE; + n1->ncase.linno = savelinno; + if (readtoken() != TWORD) + synexpect(TWORD); + n1->ncase.expr = n2 = (union node *)stalloc(sizeof (struct narg)); + n2->type = NARG; + n2->narg.text = wordtext; + n2->narg.backquote = backquotelist; + n2->narg.next = NULL; + checkkwd = CHKNL | CHKKWD | CHKALIAS; + if (readtoken() != TIN) + synexpect(TIN); + cpp = &n1->ncase.cases; +next_case: + checkkwd = CHKNL | CHKKWD; + t = readtoken(); + while(t != TESAC) { + if (lasttoken == TLP) + readtoken(); + *cpp = cp = (union node *)stalloc(sizeof (struct nclist)); + cp->type = NCLIST; + app = &cp->nclist.pattern; + for (;;) { + *app = ap = (union node *)stalloc(sizeof (struct narg)); + ap->type = NARG; + ap->narg.text = wordtext; + ap->narg.backquote = backquotelist; + if (readtoken() != TPIPE) + break; + app = &ap->narg.next; + readtoken(); + } + ap->narg.next = NULL; + if (lasttoken != TRP) + synexpect(TRP); + cp->nclist.body = list(2); + + cpp = &cp->nclist.next; + + checkkwd = CHKNL | CHKKWD; + if ((t = readtoken()) != TESAC) { + if (t != TENDCASE) + synexpect(TENDCASE); + else + goto next_case; + } + } + *cpp = NULL; + goto redir; + case TLP: + n1 = (union node *)stalloc(sizeof (struct nredir)); + n1->type = NSUBSHELL; + n1->nredir.linno = savelinno; + n1->nredir.n = list(0); + n1->nredir.redirect = NULL; + t = TRP; + break; + case TBEGIN: + n1 = list(0); + t = TEND; + break; + case TWORD: + case TREDIR: + tokpushback++; + return simplecmd(); + } + + if (readtoken() != t) + synexpect(t); + +redir: + /* Now check for redirection which may follow command */ + checkkwd = CHKKWD | CHKALIAS; + rpp = rpp2; + while (readtoken() == TREDIR) { + *rpp = n2 = redirnode; + rpp = &n2->nfile.next; + parsefname(); + } + tokpushback++; + *rpp = NULL; + if (redir) { + if (n1->type != NSUBSHELL) { + n2 = (union node *)stalloc(sizeof (struct nredir)); + n2->type = NREDIR; + n2->nredir.linno = savelinno; + n2->nredir.n = n1; + n1 = n2; + } + n1->nredir.redirect = redir; + } + + return n1; +} + + +STATIC union node * +simplecmd(void) { + union node *args, **app; + union node *n = NULL; + union node *vars, **vpp; + union node **rpp, *redir; + int savecheckkwd; + int savelinno; + + args = NULL; + app = &args; + vars = NULL; + vpp = &vars; + redir = NULL; + rpp = &redir; + + savecheckkwd = CHKALIAS; + savelinno = plinno; + for (;;) { + checkkwd = savecheckkwd; + switch (readtoken()) { + case TWORD: + n = (union node *)stalloc(sizeof (struct narg)); + n->type = NARG; + n->narg.text = wordtext; + n->narg.backquote = backquotelist; + if (savecheckkwd && isassignment(wordtext)) { + *vpp = n; + vpp = &n->narg.next; + } else { + *app = n; + app = &n->narg.next; + savecheckkwd = 0; + } + break; + case TREDIR: + *rpp = n = redirnode; + rpp = &n->nfile.next; + parsefname(); /* read name of redirection file */ + break; + case TLP: + if ( + args && app == &args->narg.next && + !vars && !redir + ) { + struct builtincmd *bcmd; + const char *name; + + /* We have a function */ + if (readtoken() != TRP) + synexpect(TRP); + name = n->narg.text; + if ( + !goodname(name) || ( + (bcmd = find_builtin(name)) && + bcmd->flags & BUILTIN_SPECIAL + ) + ) + synerror("Bad function name"); + n->type = NDEFUN; + checkkwd = CHKNL | CHKKWD | CHKALIAS; + n->ndefun.text = n->narg.text; + n->ndefun.linno = plinno; + n->ndefun.body = command(); + return n; + } + /* fall through */ + default: + tokpushback++; + goto out; + } + } +out: + *app = NULL; + *vpp = NULL; + *rpp = NULL; + n = (union node *)stalloc(sizeof (struct ncmd)); + n->type = NCMD; + n->ncmd.linno = savelinno; + n->ncmd.args = args; + n->ncmd.assign = vars; + n->ncmd.redirect = redir; + return n; +} + +STATIC union node * +makename(void) +{ + union node *n; + + n = (union node *)stalloc(sizeof (struct narg)); + n->type = NARG; + n->narg.next = NULL; + n->narg.text = wordtext; + n->narg.backquote = backquotelist; + return n; +} + +void fixredir(union node *n, const char *text, int err) + { + TRACE(("Fix redir %s %d\n", text, err)); + if (!err) + n->ndup.vname = NULL; + + if (is_digit(text[0]) && text[1] == '\0') + n->ndup.dupfd = digit_val(text[0]); + else if (text[0] == '-' && text[1] == '\0') + n->ndup.dupfd = -1; + else { + + if (err) + synerror("Bad fd number"); + else + n->ndup.vname = makename(); + } +} + + +STATIC void +parsefname(void) +{ + union node *n = redirnode; + + if (n->type == NHERE) + checkkwd = CHKEOFMARK; + if (readtoken() != TWORD) + synexpect(-1); + if (n->type == NHERE) { + struct heredoc *here = heredoc; + struct heredoc *p; + + if (quoteflag == 0) + n->type = NXHERE; + TRACE(("Here document %d\n", n->type)); + rmescapes(wordtext); + here->eofmark = wordtext; + here->next = NULL; + if (heredoclist == NULL) + heredoclist = here; + else { + for (p = heredoclist ; p->next ; p = p->next); + p->next = here; + } + } else if (n->type == NTOFD || n->type == NFROMFD) { + fixredir(n, wordtext, 0); + } else { + n->nfile.fname = makename(); + } +} + + +/* + * Input any here documents. + */ + +STATIC void +parseheredoc(void) +{ + struct heredoc *here; + union node *n; + + here = heredoclist; + heredoclist = 0; + + while (here) { + if (needprompt) { + setprompt(2); + } + readtoken1(pgetc(), here->here->type == NHERE? SQSYNTAX : DQSYNTAX, + here->eofmark, here->striptabs); + n = (union node *)stalloc(sizeof (struct narg)); + n->narg.type = NARG; + n->narg.next = NULL; + n->narg.text = wordtext; + n->narg.backquote = backquotelist; + here->here->nhere.doc = n; + here = here->next; + } +} + +STATIC int +peektoken(void) +{ + int t; + + t = readtoken(); + tokpushback++; + return (t); +} + +STATIC int +readtoken(void) +{ + int t; + int kwd = checkkwd; +#ifdef DEBUG + int alreadyseen = tokpushback; +#endif + +top: + t = xxreadtoken(); + + /* + * eat newlines + */ + if (kwd & CHKNL) { + while (t == TNL) { + parseheredoc(); + t = xxreadtoken(); + } + } + + if (t != TWORD || quoteflag) { + goto out; + } + + /* + * check for keywords + */ + if (kwd & CHKKWD) { + const char *const *pp; + + if ((pp = findkwd(wordtext))) { + lasttoken = t = pp - parsekwd + KWDOFFSET; + TRACE(("keyword %s recognized\n", tokname[t])); + goto out; + } + } + + if (checkkwd & CHKALIAS) { + struct alias *ap; + if ((ap = lookupalias(wordtext, 1)) != NULL) { + if (*ap->val) { + pushstring(ap->val, ap); + } + goto top; + } + } +out: + checkkwd = 0; +#ifdef DEBUG + if (!alreadyseen) + TRACE(("token %s %s\n", tokname[t], t == TWORD ? wordtext : "")); + else + TRACE(("reread token %s %s\n", tokname[t], t == TWORD ? wordtext : "")); +#endif + return (t); +} + + +/* + * Read the next input token. + * If the token is a word, we set backquotelist to the list of cmds in + * backquotes. We set quoteflag to true if any part of the word was + * quoted. + * If the token is TREDIR, then we set redirnode to a structure containing + * the redirection. + * + * [Change comment: here documents and internal procedures] + * [Readtoken shouldn't have any arguments. Perhaps we should make the + * word parsing code into a separate routine. In this case, readtoken + * doesn't need to have any internal procedures, but parseword does. + * We could also make parseoperator in essence the main routine, and + * have parseword (readtoken1?) handle both words and redirection.] + */ + +#define RETURN(token) return lasttoken = token + +STATIC int +xxreadtoken(void) +{ + int c; + + if (tokpushback) { + tokpushback = 0; + return lasttoken; + } + if (needprompt) { + setprompt(2); + } + for (;;) { /* until token or start of word found */ + c = pgetc_macro(); + switch (c) { + case ' ': case '\t': + case PEOA: + continue; + case '#': + while ((c = pgetc()) != '\n' && c != PEOF); + pungetc(); + continue; + case '\\': + if (pgetc() == '\n') { + plinno++; + if (doprompt) + setprompt(2); + continue; + } + pungetc(); + goto breakloop; + case '\n': + plinno++; + needprompt = doprompt; + RETURN(TNL); + case PEOF: + RETURN(TEOF); + case '&': + if (pgetc() == '&') + RETURN(TAND); + pungetc(); + RETURN(TBACKGND); + case '|': + if (pgetc() == '|') + RETURN(TOR); + pungetc(); + RETURN(TPIPE); + case ';': + if (pgetc() == ';') + RETURN(TENDCASE); + pungetc(); + RETURN(TSEMI); + case '(': + RETURN(TLP); + case ')': + RETURN(TRP); + default: + goto breakloop; + } + } +breakloop: + return readtoken1(c, BASESYNTAX, (char *)NULL, 0); +#undef RETURN +} + + + +/* + * If eofmark is NULL, read a word or a redirection symbol. If eofmark + * is not NULL, read a here document. In the latter case, eofmark is the + * word which marks the end of the document and striptabs is true if + * leading tabs should be stripped from the document. The argument firstc + * is the first character of the input token or document. + * + * Because C does not have internal subroutines, I have simulated them + * using goto's to implement the subroutine linkage. The following macros + * will run code that appears at the end of readtoken1. + */ + +#define CHECKEND() {goto checkend; checkend_return:;} +#define PARSEREDIR() {goto parseredir; parseredir_return:;} +#define PARSESUB() {goto parsesub; parsesub_return:;} +#define PARSEBACKQOLD() {oldstyle = 1; goto parsebackq; parsebackq_oldreturn:;} +#define PARSEBACKQNEW() {oldstyle = 0; goto parsebackq; parsebackq_newreturn:;} +#define PARSEARITH() {goto parsearith; parsearith_return:;} + +STATIC int +readtoken1(int firstc, char const *syntax, char *eofmark, int striptabs) +{ + int c = firstc; + char *out; + size_t len; + struct nodelist *bqlist; + int quotef; + int dblquote; + int varnest; /* levels of variables expansion */ + int arinest; /* levels of arithmetic expansion */ + int parenlevel; /* levels of parens in arithmetic */ + int dqvarnest; /* levels of variables expansion within double quotes */ + int oldstyle; + /* syntax before arithmetic */ + char const *uninitialized_var(prevsyntax); + + dblquote = 0; + if (syntax == DQSYNTAX) + dblquote = 1; + quotef = 0; + bqlist = NULL; + varnest = 0; + arinest = 0; + parenlevel = 0; + dqvarnest = 0; + + STARTSTACKSTR(out); + loop: { /* for each line, until end of word */ +#if ATTY + if (c == '\034' && doprompt + && attyset() && ! equal(termval(), "emacs")) { + attyline(); + if (syntax == BASESYNTAX) + return readtoken(); + c = pgetc(); + goto loop; + } +#endif + CHECKEND(); /* set c to PEOF if at end of here document */ + for (;;) { /* until end of line or end of word */ + CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */ + switch(syntax[c]) { + case CNL: /* '\n' */ + if (syntax == BASESYNTAX) + goto endword; /* exit outer loop */ + USTPUTC(c, out); + plinno++; + if (doprompt) + setprompt(2); + c = pgetc(); + goto loop; /* continue outer loop */ + case CWORD: + USTPUTC(c, out); + break; + case CCTL: + if (eofmark == NULL || dblquote) + USTPUTC(CTLESC, out); + USTPUTC(c, out); + break; + /* backslash */ + case CBACK: + c = pgetc2(); + if (c == PEOF) { + USTPUTC(CTLESC, out); + USTPUTC('\\', out); + pungetc(); + } else if (c == '\n') { + plinno++; + if (doprompt) + setprompt(2); + } else { + if ( + dblquote && + c != '\\' && c != '`' && + c != '$' && ( + c != '"' || + eofmark != NULL + ) + ) { + USTPUTC('\\', out); + } + USTPUTC(CTLESC, out); + USTPUTC(c, out); + quotef++; + } + break; + case CSQUOTE: + syntax = SQSYNTAX; +quotemark: + if (eofmark == NULL) { + USTPUTC(CTLQUOTEMARK, out); + } + break; + case CDQUOTE: + syntax = DQSYNTAX; + dblquote = 1; + goto quotemark; + case CENDQUOTE: + if (eofmark && !varnest) + USTPUTC(c, out); + else { + if (dqvarnest == 0) { + syntax = BASESYNTAX; + dblquote = 0; + } + quotef++; + goto quotemark; + } + break; + case CVAR: /* '$' */ + PARSESUB(); /* parse substitution */ + break; + case CENDVAR: /* '}' */ + if (varnest > 0) { + varnest--; + if (dqvarnest > 0) { + dqvarnest--; + } + USTPUTC(CTLENDVAR, out); + } else { + USTPUTC(c, out); + } + break; + case CLP: /* '(' in arithmetic */ + parenlevel++; + USTPUTC(c, out); + break; + case CRP: /* ')' in arithmetic */ + if (parenlevel > 0) { + USTPUTC(c, out); + --parenlevel; + } else { + if (pgetc() == ')') { + USTPUTC(CTLENDARI, out); + if (!--arinest) + syntax = prevsyntax; + } else { + /* + * unbalanced parens + * (don't 2nd guess - no error) + */ + pungetc(); + USTPUTC(')', out); + } + } + break; + case CBQUOTE: /* '`' */ + PARSEBACKQOLD(); + break; + case CEOF: + goto endword; /* exit outer loop */ + case CIGN: + break; + default: + if (varnest == 0) + goto endword; /* exit outer loop */ + if (c != PEOA) { + USTPUTC(c, out); + } + } + c = pgetc_macro(); + } + } +endword: + if (syntax == ARISYNTAX) + synerror("Missing '))'"); + if (syntax != BASESYNTAX && eofmark == NULL) + synerror("Unterminated quoted string"); + if (varnest != 0) { + /* { */ + synerror("Missing '}'"); + } + USTPUTC('\0', out); + len = out - (char *)stackblock(); + out = stackblock(); + if (eofmark == NULL) { + if ((c == '>' || c == '<') + && quotef == 0 + && len <= 2 + && (*out == '\0' || is_digit(*out))) { + PARSEREDIR(); + return lasttoken = TREDIR; + } else { + pungetc(); + } + } + quoteflag = quotef; + backquotelist = bqlist; + grabstackblock(len); + wordtext = out; + return lasttoken = TWORD; +/* end of readtoken routine */ + + + +/* + * Check to see whether we are at the end of the here document. When this + * is called, c is set to the first character of the next input line. If + * we are at the end of the here document, this routine sets the c to PEOF. + */ + +checkend: { + if (realeofmark(eofmark)) { + int markloc; + char *p; + + if (c == PEOA) { + c = pgetc2(); + } + if (striptabs) { + while (c == '\t') { + c = pgetc2(); + } + } + + markloc = out - (char *)stackblock(); + for (p = eofmark; STPUTC(c, out), *p; p++) { + if (c != *p) + goto more_heredoc; + + c = pgetc2(); + } + + if (c == '\n' || c == PEOF) { + c = PEOF; + plinno++; + needprompt = doprompt; + } else { + int len; + +more_heredoc: + p = (char *)stackblock() + markloc + 1; + len = out - p; + + if (len) { + len -= c < 0; + c = p[-1]; + + if (len) { + char *str; + + str = alloca(len + 1); + *(char *)mempcpy(str, p, len) = 0; + + pushstring(str, NULL); + } + } + } + + STADJUST((char *)stackblock() + markloc - out, out); + } + goto checkend_return; +} + + +/* + * Parse a redirection operator. The variable "out" points to a string + * specifying the fd to be redirected. The variable "c" contains the + * first character of the redirection operator. + */ + +parseredir: { + char fd = *out; + union node *np; + + np = (union node *)stalloc(sizeof (struct nfile)); + if (c == '>') { + np->nfile.fd = 1; + c = pgetc(); + if (c == '>') + np->type = NAPPEND; + else if (c == '|') + np->type = NCLOBBER; + else if (c == '&') + np->type = NTOFD; + else { + np->type = NTO; + pungetc(); + } + } else { /* c == '<' */ + np->nfile.fd = 0; + switch (c = pgetc()) { + case '<': + if (sizeof (struct nfile) != sizeof (struct nhere)) { + np = (union node *)stalloc(sizeof (struct nhere)); + np->nfile.fd = 0; + } + np->type = NHERE; + heredoc = (struct heredoc *)stalloc(sizeof (struct heredoc)); + heredoc->here = np; + if ((c = pgetc()) == '-') { + heredoc->striptabs = 1; + } else { + heredoc->striptabs = 0; + pungetc(); + } + break; + + case '&': + np->type = NFROMFD; + break; + + case '>': + np->type = NFROMTO; + break; + + default: + np->type = NFROM; + pungetc(); + break; + } + } + if (fd != '\0') + np->nfile.fd = digit_val(fd); + redirnode = np; + goto parseredir_return; +} + + +/* + * Parse a substitution. At this point, we have read the dollar sign + * and nothing else. + */ + +parsesub: { + int subtype; + int typeloc; + char *p; + static const char types[] = "}-+?="; + + c = pgetc(); + if ( + (checkkwd & CHKEOFMARK) || + c <= PEOA || + (c != '(' && c != '{' && !is_name(c) && !is_special(c)) + ) { + USTPUTC('$', out); + pungetc(); + } else if (c == '(') { /* $(command) or $((arith)) */ + if (pgetc() == '(') { + PARSEARITH(); + } else { + pungetc(); + PARSEBACKQNEW(); + } + } else { + USTPUTC(CTLVAR, out); + typeloc = out - (char *)stackblock(); + STADJUST(1, out); + subtype = VSNORMAL; + if (likely(c == '{')) { + c = pgetc(); + subtype = 0; + } +varname: + if (is_name(c)) { + do { + STPUTC(c, out); + c = pgetc(); + } while (is_in_name(c)); + } else if (is_digit(c)) { + do { + STPUTC(c, out); + c = pgetc(); + } while (is_digit(c)); + } + else if (is_special(c)) { + int cc = c; + + c = pgetc(); + + if (!subtype && cc == '#') { + subtype = VSLENGTH; + + if (c == '_' || isalnum(c)) + goto varname; + + cc = c; + c = pgetc(); + if (cc == '}' || c != '}') { + pungetc(); + subtype = 0; + c = cc; + cc = '#'; + } + } + + USTPUTC(cc, out); + } + else + goto badsub; + + if (subtype == 0) { + switch (c) { + case ':': + subtype = VSNUL; + c = pgetc(); + /*FALLTHROUGH*/ + default: + p = strchr(types, c); + if (p == NULL) + break; + subtype |= p - types + VSNORMAL; + break; + case '%': + case '#': + { + int cc = c; + subtype = c == '#' ? VSTRIMLEFT : + VSTRIMRIGHT; + c = pgetc(); + if (c == cc) + subtype++; + else + pungetc(); + break; + } + } + } else { +badsub: + pungetc(); + } + *((char *)stackblock() + typeloc) = subtype; + if (subtype != VSNORMAL) { + varnest++; + if (dblquote) + dqvarnest++; + } + STPUTC('=', out); + } + goto parsesub_return; +} + + +/* + * Called to parse command substitutions. Newstyle is set if the command + * is enclosed inside $(...); nlpp is a pointer to the head of the linked + * list of commands (passed by reference), and savelen is the number of + * characters on the top of the stack which must be preserved. + */ + +parsebackq: { + struct nodelist **nlpp; + union node *n; + char *str; + size_t savelen; + int uninitialized_var(saveprompt); + + str = NULL; + savelen = out - (char *)stackblock(); + if (savelen > 0) { + str = alloca(savelen); + memcpy(str, stackblock(), savelen); + } + if (oldstyle) { + /* We must read until the closing backquote, giving special + treatment to some slashes, and then push the string and + reread it as input, interpreting it normally. */ + char *pout; + int pc; + size_t psavelen; + char *pstr; + + + STARTSTACKSTR(pout); + for (;;) { + if (needprompt) { + setprompt(2); + } + switch (pc = pgetc()) { + case '`': + goto done; + + case '\\': + if ((pc = pgetc()) == '\n') { + plinno++; + if (doprompt) + setprompt(2); + /* + * If eating a newline, avoid putting + * the newline into the new character + * stream (via the STPUTC after the + * switch). + */ + continue; + } + if (pc != '\\' && pc != '`' && pc != '$' + && (!dblquote || pc != '"')) + STPUTC('\\', pout); + if (pc > PEOA) { + break; + } + /* fall through */ + + case PEOF: + case PEOA: + synerror("EOF in backquote substitution"); + + case '\n': + plinno++; + needprompt = doprompt; + break; + + default: + break; + } + STPUTC(pc, pout); + } +done: + STPUTC('\0', pout); + psavelen = pout - (char *)stackblock(); + if (psavelen > 0) { + pstr = grabstackstr(pout); + setinputstring(pstr); + } + } + nlpp = &bqlist; + while (*nlpp) + nlpp = &(*nlpp)->next; + *nlpp = (struct nodelist *)stalloc(sizeof (struct nodelist)); + (*nlpp)->next = NULL; + + if (oldstyle) { + saveprompt = doprompt; + doprompt = 0; + } + + n = list(2); + + if (oldstyle) + doprompt = saveprompt; + else { + if (readtoken() != TRP) + synexpect(TRP); + } + + (*nlpp)->n = n; + if (oldstyle) { + /* + * Start reading from old file again, ignoring any pushed back + * tokens left from the backquote parsing + */ + popfile(); + tokpushback = 0; + } + while (stackblocksize() <= savelen) + growstackblock(); + STARTSTACKSTR(out); + if (str) { + memcpy(out, str, savelen); + STADJUST(savelen, out); + } + USTPUTC(CTLBACKQ, out); + if (oldstyle) + goto parsebackq_oldreturn; + else + goto parsebackq_newreturn; +} + +/* + * Parse an arithmetic expansion (indicate start of one and set state) + */ +parsearith: { + + if (++arinest == 1) { + prevsyntax = syntax; + syntax = ARISYNTAX; + } + USTPUTC(CTLARI, out); + goto parsearith_return; +} + +} /* end of readtoken */ + + + +#ifdef mkinit +INCLUDE "parser.h" +RESET { + tokpushback = 0; + checkkwd = 0; +} +#endif + + +/* + * Return of a legal variable name (a letter or underscore followed by zero or + * more letters, underscores, and digits). + */ + +char * +endofname(const char *name) + { + char *p; + + p = (char *) name; + if (! is_name(*p)) + return p; + while (*++p) { + if (! is_in_name(*p)) + break; + } + return p; +} + + +/* + * Called when an unexpected token is read during the parse. The argument + * is the token that is expected, or -1 if more than one type of token can + * occur at this point. + */ + +STATIC void +synexpect(int token) +{ + char msg[64]; + + if (token >= 0) { + fmtstr(msg, 64, "%s unexpected (expecting %s)", + tokname[lasttoken], tokname[token]); + } else { + fmtstr(msg, 64, "%s unexpected", tokname[lasttoken]); + } + synerror(msg); + /* NOTREACHED */ +} + + +STATIC void +synerror(const char *msg) +{ + errlinno = plinno; + sh_error("Syntax error: %s", msg); + /* NOTREACHED */ +} + +STATIC void +setprompt(int which) +{ + struct stackmark smark; + int show; + + needprompt = 0; + whichprompt = which; + +#ifdef SMALL + show = 1; +#else + show = !el; +#endif + if (show) { + pushstackmark(&smark, stackblocksize()); + out2str(getprompt(NULL)); + popstackmark(&smark); + } +} + +const char * +expandstr(const char *ps) +{ + union node n; + int saveprompt; + + /* XXX Fix (char *) cast. */ + setinputstring((char *)ps); + + saveprompt = doprompt; + doprompt = 0; + + readtoken1(pgetc(), DQSYNTAX, FAKEEOFMARK, 0); + + doprompt = saveprompt; + + popfile(); + + n.narg.type = NARG; + n.narg.next = NULL; + n.narg.text = wordtext; + n.narg.backquote = backquotelist; + + expandarg(&n, NULL, EXP_QUOTED); + return stackblock(); +} + +/* + * called by editline -- any expansions to the prompt + * should be added here. + */ +const char * +getprompt(void *unused) +{ + const char *prompt; + + switch (whichprompt) { + default: +#ifdef DEBUG + return ""; +#endif + case 0: + return nullstr; + case 1: + prompt = ps1val(); + break; + case 2: + prompt = ps2val(); + break; + } + + return expandstr(prompt); +} + +const char *const * +findkwd(const char *s) +{ + return findstring( + s, parsekwd, sizeof(parsekwd) / sizeof(const char *) + ); +} diff --git a/shells/dash/files/src/parser.h b/shells/dash/files/src/parser.h new file mode 100644 index 0000000000000..2875cce6d4241 --- /dev/null +++ b/shells/dash/files/src/parser.h @@ -0,0 +1,101 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)parser.h 8.3 (Berkeley) 5/4/95 + */ + +#include "token.h" + +/* control characters in argument strings */ +#define CTL_FIRST -127 /* first 'special' character */ +#define CTLESC -127 /* escape next character */ +#define CTLVAR -126 /* variable defn */ +#define CTLENDVAR -125 +#define CTLBACKQ -124 +#define CTLARI -122 /* arithmetic expression */ +#define CTLENDARI -121 +#define CTLQUOTEMARK -120 +#define CTL_LAST -120 /* last 'special' character */ + +/* variable substitution byte (follows CTLVAR) */ +#define VSTYPE 0x0f /* type of variable substitution */ +#define VSNUL 0x10 /* colon--treat the empty string as unset */ + +/* values of VSTYPE field */ +#define VSNORMAL 0x1 /* normal variable: $var or ${var} */ +#define VSMINUS 0x2 /* ${var-text} */ +#define VSPLUS 0x3 /* ${var+text} */ +#define VSQUESTION 0x4 /* ${var?message} */ +#define VSASSIGN 0x5 /* ${var=text} */ +#define VSTRIMRIGHT 0x6 /* ${var%pattern} */ +#define VSTRIMRIGHTMAX 0x7 /* ${var%%pattern} */ +#define VSTRIMLEFT 0x8 /* ${var#pattern} */ +#define VSTRIMLEFTMAX 0x9 /* ${var##pattern} */ +#define VSLENGTH 0xa /* ${#var} */ + +/* values of checkkwd variable */ +#define CHKALIAS 0x1 +#define CHKKWD 0x2 +#define CHKNL 0x4 +#define CHKEOFMARK 0x8 + + +/* + * NEOF is returned by parsecmd when it encounters an end of file. It + * must be distinct from NULL, so we use the address of a variable that + * happens to be handy. + */ +extern int lasttoken; +extern int tokpushback; +#define NEOF ((union node *)&tokpushback) +extern int whichprompt; /* 1 == PS1, 2 == PS2 */ +extern int checkkwd; + + +union node *parsecmd(int); +void fixredir(union node *, const char *, int); +const char *getprompt(void *); +const char *const *findkwd(const char *); +char *endofname(const char *); +const char *expandstr(const char *); + +static inline int +goodname(const char *p) +{ + return !*endofname(p); +} + +static inline int parser_eof(void) +{ + return tokpushback && lasttoken == TEOF; +} diff --git a/shells/dash/files/src/redir.c b/shells/dash/files/src/redir.c new file mode 100644 index 0000000000000..f96a76bc442fc --- /dev/null +++ b/shells/dash/files/src/redir.c @@ -0,0 +1,459 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include /* PIPE_BUF */ +#include +#include +#include +#include +#include + +/* + * Code for dealing with input/output redirection. + */ + +#include "main.h" +#include "shell.h" +#include "nodes.h" +#include "jobs.h" +#include "options.h" +#include "expand.h" +#include "redir.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" + + +#define REALLY_CLOSED -3 /* fd that was closed and still is */ +#define EMPTY -2 /* marks an unused slot in redirtab */ +#define CLOSED -1 /* fd opened for redir needs to be closed */ + +#ifndef PIPE_BUF +# define PIPESIZE 4096 /* amount of buffering in a pipe */ +#else +# define PIPESIZE PIPE_BUF +#endif + + +MKINIT +struct redirtab { + struct redirtab *next; + int renamed[10]; +}; + + +MKINIT struct redirtab *redirlist; + +STATIC int openredirect(union node *); +#ifdef notyet +STATIC void dupredirect(union node *, int, char[10]); +#else +STATIC void dupredirect(union node *, int); +#endif +STATIC int openhere(union node *); + + +/* + * Process a list of redirection commands. If the REDIR_PUSH flag is set, + * old file descriptors are stashed away so that the redirection can be + * undone by calling popredir. If the REDIR_BACKQ flag is set, then the + * standard output, and the standard error if it becomes a duplicate of + * stdout, is saved in memory. + */ + +void +redirect(union node *redir, int flags) +{ + union node *n; + struct redirtab *sv; + int i; + int fd; + int newfd; + int *p; +#if notyet + char memory[10]; /* file descriptors to write to memory */ + + for (i = 10 ; --i >= 0 ; ) + memory[i] = 0; + memory[1] = flags & REDIR_BACKQ; +#endif + if (!redir) + return; + sv = NULL; + INTOFF; + if (likely(flags & REDIR_PUSH)) + sv = redirlist; + n = redir; + do { + newfd = openredirect(n); + if (newfd < -1) + continue; + + fd = n->nfile.fd; + + if (sv) { + p = &sv->renamed[fd]; + i = *p; + + if (likely(i == EMPTY)) { + i = CLOSED; + if (fd != newfd) { + i = savefd(fd, fd); + fd = -1; + } + } + + if (i == newfd) + /* Can only happen if i == newfd == CLOSED */ + i = REALLY_CLOSED; + + *p = i; + } + + if (fd == newfd) + continue; + +#ifdef notyet + dupredirect(n, newfd, memory); +#else + dupredirect(n, newfd); +#endif + } while ((n = n->nfile.next)); + INTON; +#ifdef notyet + if (memory[1]) + out1 = &memout; + if (memory[2]) + out2 = &memout; +#endif + if (flags & REDIR_SAVEFD2 && sv->renamed[2] >= 0) + preverrout.fd = sv->renamed[2]; +} + + +STATIC int +openredirect(union node *redir) +{ + struct stat64 sb; + char *fname; + int f; + + switch (redir->nfile.type) { + case NFROM: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_RDONLY)) < 0) + goto eopen; + break; + case NFROMTO: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_RDWR|O_CREAT, 0666)) < 0) + goto ecreate; + break; + case NTO: + /* Take care of noclobber mode. */ + if (Cflag) { + fname = redir->nfile.expfname; + if (stat64(fname, &sb) < 0) { + if ((f = open64(fname, O_WRONLY|O_CREAT|O_EXCL, 0666)) < 0) + goto ecreate; + } else if (!S_ISREG(sb.st_mode)) { + if ((f = open64(fname, O_WRONLY, 0666)) < 0) + goto ecreate; + if (fstat64(f, &sb) < 0 && S_ISREG(sb.st_mode)) { + close(f); + errno = EEXIST; + goto ecreate; + } + } else { + errno = EEXIST; + goto ecreate; + } + break; + } + /* FALLTHROUGH */ + case NCLOBBER: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0) + goto ecreate; + break; + case NAPPEND: + fname = redir->nfile.expfname; + if ((f = open64(fname, O_WRONLY|O_CREAT|O_APPEND, 0666)) < 0) + goto ecreate; + break; + case NTOFD: + case NFROMFD: + f = redir->ndup.dupfd; + if (f == redir->nfile.fd) + f = -2; + break; + default: +#ifdef DEBUG + abort(); +#endif + /* Fall through to eliminate warning. */ + case NHERE: + case NXHERE: + f = openhere(redir); + break; + } + + return f; +ecreate: + sh_error("cannot create %s: %s", fname, errmsg(errno, E_CREAT)); +eopen: + sh_error("cannot open %s: %s", fname, errmsg(errno, E_OPEN)); +} + + +STATIC void +#ifdef notyet +dupredirect(redir, f, memory) +#else +dupredirect(redir, f) +#endif + union node *redir; + int f; +#ifdef notyet + char memory[10]; +#endif + { + int fd = redir->nfile.fd; + int err = 0; + +#ifdef notyet + memory[fd] = 0; +#endif + if (redir->nfile.type == NTOFD || redir->nfile.type == NFROMFD) { + /* if not ">&-" */ + if (f >= 0) { +#ifdef notyet + if (memory[f]) + memory[fd] = 1; + else +#endif + if (dup2(f, fd) < 0) { + err = errno; + goto err; + } + return; + } + f = fd; + } else if (dup2(f, fd) < 0) + err = errno; + + close(f); + if (err < 0) + goto err; + + return; + +err: + sh_error("%d: %s", f, strerror(err)); +} + + +/* + * Handle here documents. Normally we fork off a process to write the + * data to a pipe. If the document is short, we can stuff the data in + * the pipe without forking. + */ + +STATIC int +openhere(union node *redir) +{ + char *p; + int pip[2]; + size_t len = 0; + + if (pipe(pip) < 0) + sh_error("Pipe call failed"); + + p = redir->nhere.doc->narg.text; + if (redir->type == NXHERE) { + expandarg(redir->nhere.doc, NULL, EXP_QUOTED); + p = stackblock(); + } + + len = strlen(p); + if (len <= PIPESIZE) { + xwrite(pip[1], p, len); + goto out; + } + + if (forkshell((struct job *)NULL, (union node *)NULL, FORK_NOJOB) == 0) { + close(pip[0]); + signal(SIGINT, SIG_IGN); + signal(SIGQUIT, SIG_IGN); + signal(SIGHUP, SIG_IGN); +#ifdef SIGTSTP + signal(SIGTSTP, SIG_IGN); +#endif + signal(SIGPIPE, SIG_DFL); + xwrite(pip[1], p, len); + _exit(0); + } +out: + close(pip[1]); + return pip[0]; +} + + + +/* + * Undo the effects of the last redirection. + */ + +void +popredir(int drop) +{ + struct redirtab *rp; + int i; + + INTOFF; + rp = redirlist; + for (i = 0 ; i < 10 ; i++) { + switch (rp->renamed[i]) { + case CLOSED: + if (!drop) + close(i); + break; + case EMPTY: + case REALLY_CLOSED: + break; + default: + if (!drop) + dup2(rp->renamed[i], i); + close(rp->renamed[i]); + break; + } + } + redirlist = rp->next; + ckfree(rp); + INTON; +} + +/* + * Undo all redirections. Called on error or interrupt. + */ + +#ifdef mkinit + +INCLUDE "redir.h" + +RESET { + /* + * Discard all saved file descriptors. + */ + unwindredir(0); +} + +#endif + + + +/* + * Move a file descriptor to > 10. Invokes sh_error on error unless + * the original file dscriptor is not open. + */ + +int +savefd(int from, int ofd) +{ + int newfd; + int err; + + newfd = fcntl(from, F_DUPFD, 10); + err = newfd < 0 ? errno : 0; + if (err != EBADF) { + close(ofd); + if (err) + sh_error("%d: %s", from, strerror(err)); + else + fcntl(newfd, F_SETFD, FD_CLOEXEC); + } + + return newfd; +} + + +int +redirectsafe(union node *redir, int flags) +{ + int err; + volatile int saveint; + struct jmploc *volatile savehandler = handler; + struct jmploc jmploc; + + SAVEINT(saveint); + if (!(err = setjmp(jmploc.loc) * 2)) { + handler = &jmploc; + redirect(redir, flags); + } + handler = savehandler; + if (err && exception != EXERROR) + longjmp(handler->loc, 1); + RESTOREINT(saveint); + return err; +} + + +void unwindredir(struct redirtab *stop) +{ + while (redirlist != stop) + popredir(0); +} + + +struct redirtab *pushredir(union node *redir) +{ + struct redirtab *sv; + struct redirtab *q; + int i; + + q = redirlist; + if (!redir) + goto out; + + sv = ckmalloc(sizeof (struct redirtab)); + sv->next = q; + redirlist = sv; + for (i = 0; i < 10; i++) + sv->renamed[i] = EMPTY; + +out: + return q; +} diff --git a/shells/dash/files/src/redir.h b/shells/dash/files/src/redir.h new file mode 100644 index 0000000000000..8e56995f04e10 --- /dev/null +++ b/shells/dash/files/src/redir.h @@ -0,0 +1,53 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)redir.h 8.2 (Berkeley) 5/4/95 + */ + +/* flags passed to redirect */ +#define REDIR_PUSH 01 /* save previous values of file descriptors */ +#ifdef notyet +#define REDIR_BACKQ 02 /* save the command output in memory */ +#endif +#define REDIR_SAVEFD2 03 /* set preverrout */ + +struct redirtab; +union node; +void redirect(union node *, int); +void popredir(int); +void clearredir(void); +int savefd(int, int); +int redirectsafe(union node *, int); +void unwindredir(struct redirtab *stop); +struct redirtab *pushredir(union node *redir); + diff --git a/shells/dash/files/src/shell.h b/shells/dash/files/src/shell.h new file mode 100644 index 0000000000000..98edc8beffd45 --- /dev/null +++ b/shells/dash/files/src/shell.h @@ -0,0 +1,104 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)shell.h 8.2 (Berkeley) 5/4/95 + */ + +/* + * The follow should be set to reflect the type of system you have: + * JOBS -> 1 if you have Berkeley job control, 0 otherwise. + * SHORTNAMES -> 1 if your linker cannot handle long names. + * define BSD if you are running 4.2 BSD or later. + * define SYSV if you are running under System V. + * define DEBUG=1 to compile in debugging ('set -o debug' to turn on) + * define DEBUG=2 to compile in and turn on debugging. + * define DO_SHAREDVFORK to indicate that vfork(2) shares its address + * with its parent. + * + * When debugging is on, debugging info will be written to ./trace and + * a quit signal will generate a core dump. + */ + +#include + +#ifndef JOBS +#define JOBS 1 +#endif +#ifndef BSD +#define BSD 1 +#endif + +#ifndef DO_SHAREDVFORK +#if __NetBSD_Version__ >= 104000000 +#define DO_SHAREDVFORK +#endif +#endif + +typedef void *pointer; +#ifndef NULL +#define NULL (void *)0 +#endif +#define STATIC static +#define MKINIT /* empty */ + +extern char nullstr[1]; /* null string */ + + +#ifdef DEBUG +#define TRACE(param) trace param +#define TRACEV(param) tracev param +#else +#define TRACE(param) +#define TRACEV(param) +#endif + +#if defined(__GNUC__) && __GNUC__ < 3 +#define va_copy __va_copy +#endif + +#if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) +#define __builtin_expect(x, expected_value) (x) +#endif + +#define likely(x) __builtin_expect(!!(x),1) +#define unlikely(x) __builtin_expect(!!(x),0) + +/* + * Hack to calculate maximum length. + * (length * 8 - 1) * log10(2) + 1 + 1 + 12 + * The second 1 is for the minus sign and the 12 is a safety margin. + */ +static inline int max_int_length(int bytes) +{ + return (bytes * 8 - 1) * 0.30102999566398119521 + 14; +} diff --git a/shells/dash/files/src/show.c b/shells/dash/files/src/show.c new file mode 100644 index 0000000000000..4a049e933bb12 --- /dev/null +++ b/shells/dash/files/src/show.c @@ -0,0 +1,406 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include + +#include "shell.h" +#include "parser.h" +#include "nodes.h" +#include "mystring.h" +#include "show.h" +#include "options.h" + + +#ifdef DEBUG +static void shtree(union node *, int, char *, FILE*); +static void shcmd(union node *, FILE *); +static void sharg(union node *, FILE *); +static void indent(int, char *, FILE *); +static void trstring(char *); + + +void +showtree(union node *n) +{ + trputs("showtree called\n"); + shtree(n, 1, NULL, stdout); +} + + +static void +shtree(union node *n, int ind, char *pfx, FILE *fp) +{ + struct nodelist *lp; + const char *s; + + if (n == NULL) + return; + + indent(ind, pfx, fp); + switch(n->type) { + case NSEMI: + s = "; "; + goto binop; + case NAND: + s = " && "; + goto binop; + case NOR: + s = " || "; +binop: + shtree(n->nbinary.ch1, ind, NULL, fp); + /* if (ind < 0) */ + fputs(s, fp); + shtree(n->nbinary.ch2, ind, NULL, fp); + break; + case NCMD: + shcmd(n, fp); + if (ind >= 0) + putc('\n', fp); + break; + case NPIPE: + for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) { + shcmd(lp->n, fp); + if (lp->next) + fputs(" | ", fp); + } + if (n->npipe.backgnd) + fputs(" &", fp); + if (ind >= 0) + putc('\n', fp); + break; + default: + fprintf(fp, "", n->type); + if (ind >= 0) + putc('\n', fp); + break; + } +} + + + +static void +shcmd(union node *cmd, FILE *fp) +{ + union node *np; + int first; + const char *s; + int dftfd; + + first = 1; + for (np = cmd->ncmd.args ; np ; np = np->narg.next) { + if (! first) + putchar(' '); + sharg(np, fp); + first = 0; + } + for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) { + if (! first) + putchar(' '); + switch (np->nfile.type) { + case NTO: s = ">"; dftfd = 1; break; + case NCLOBBER: s = ">|"; dftfd = 1; break; + case NAPPEND: s = ">>"; dftfd = 1; break; + case NTOFD: s = ">&"; dftfd = 1; break; + case NFROM: s = "<"; dftfd = 0; break; + case NFROMFD: s = "<&"; dftfd = 0; break; + case NFROMTO: s = "<>"; dftfd = 0; break; + default: s = "*error*"; dftfd = 0; break; + } + if (np->nfile.fd != dftfd) + fprintf(fp, "%d", np->nfile.fd); + fputs(s, fp); + if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) { + fprintf(fp, "%d", np->ndup.dupfd); + } else { + sharg(np->nfile.fname, fp); + } + first = 0; + } +} + + + +static void +sharg(union node *arg, FILE *fp) +{ + char *p; + struct nodelist *bqlist; + int subtype; + + if (arg->type != NARG) { + printf("\n", arg->type); + abort(); + } + bqlist = arg->narg.backquote; + for (p = arg->narg.text ; *p ; p++) { + switch ((signed char)*p) { + case CTLESC: + putc(*++p, fp); + break; + case CTLVAR: + putc('$', fp); + putc('{', fp); + subtype = *++p; + if (subtype == VSLENGTH) + putc('#', fp); + + while (*p != '=') + putc(*p++, fp); + + if (subtype & VSNUL) + putc(':', fp); + + switch (subtype & VSTYPE) { + case VSNORMAL: + putc('}', fp); + break; + case VSMINUS: + putc('-', fp); + break; + case VSPLUS: + putc('+', fp); + break; + case VSQUESTION: + putc('?', fp); + break; + case VSASSIGN: + putc('=', fp); + break; + case VSTRIMLEFT: + putc('#', fp); + break; + case VSTRIMLEFTMAX: + putc('#', fp); + putc('#', fp); + break; + case VSTRIMRIGHT: + putc('%', fp); + break; + case VSTRIMRIGHTMAX: + putc('%', fp); + putc('%', fp); + break; + case VSLENGTH: + break; + default: + printf("", subtype); + } + break; + case CTLENDVAR: + putc('}', fp); + break; + case CTLBACKQ: + putc('$', fp); + putc('(', fp); + shtree(bqlist->n, -1, NULL, fp); + putc(')', fp); + break; + default: + putc(*p, fp); + break; + } + } +} + + +static void +indent(int amount, char *pfx, FILE *fp) +{ + int i; + + for (i = 0 ; i < amount ; i++) { + if (pfx && i == amount - 1) + fputs(pfx, fp); + putc('\t', fp); + } +} + + + +/* + * Debugging stuff. + */ + + +FILE *tracefile; + + +void +trputc(int c) +{ + if (debug != 1) + return; + putc(c, tracefile); +} + +void +trace(const char *fmt, ...) +{ + va_list va; + + if (debug != 1) + return; + va_start(va, fmt); + (void) vfprintf(tracefile, fmt, va); + va_end(va); +} + +void +tracev(const char *fmt, va_list va) +{ + if (debug != 1) + return; + (void) vfprintf(tracefile, fmt, va); +} + + +void +trputs(const char *s) +{ + if (debug != 1) + return; + fputs(s, tracefile); +} + + +static void +trstring(char *s) +{ + char *p; + char c; + + if (debug != 1) + return; + putc('"', tracefile); + for (p = s ; *p ; p++) { + switch ((signed char)*p) { + case '\n': c = 'n'; goto backslash; + case '\t': c = 't'; goto backslash; + case '\r': c = 'r'; goto backslash; + case '"': c = '"'; goto backslash; + case '\\': c = '\\'; goto backslash; + case CTLESC: c = 'e'; goto backslash; + case CTLVAR: c = 'v'; goto backslash; + case CTLBACKQ: c = 'q'; goto backslash; +backslash: putc('\\', tracefile); + putc(c, tracefile); + break; + default: + if (*p >= ' ' && *p <= '~') + putc(*p, tracefile); + else { + putc('\\', tracefile); + putc(*p >> 6 & 03, tracefile); + putc(*p >> 3 & 07, tracefile); + putc(*p & 07, tracefile); + } + break; + } + } + putc('"', tracefile); +} + + +void +trargs(char **ap) +{ + if (debug != 1) + return; + while (*ap) { + trstring(*ap++); + if (*ap) + putc(' ', tracefile); + else + putc('\n', tracefile); + } +} + + +void +opentrace(void) +{ + char s[100]; +#ifdef O_APPEND + int flags; +#endif + + if (debug != 1) { + if (tracefile) + fflush(tracefile); + /* leave open because libedit might be using it */ + return; + } +#ifdef not_this_way + { + char *p; + if ((p = getenv(homestr)) == NULL) { + if (geteuid() == 0) + p = "/"; + else + p = "/tmp"; + } + scopy(p, s); + strcat(s, "/trace"); + } +#else + scopy("./trace", s); +#endif /* not_this_way */ + if (tracefile) { +#ifndef __KLIBC__ + if (!freopen(s, "a", tracefile)) { +#else + if (!(!fclose(tracefile) && (tracefile = fopen(s, "a")))) { +#endif /* __KLIBC__ */ + fprintf(stderr, "Can't re-open %s\n", s); + debug = 0; + return; + } + } else { + if ((tracefile = fopen(s, "a")) == NULL) { + fprintf(stderr, "Can't open %s\n", s); + debug = 0; + return; + } + } +#ifdef O_APPEND + if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0) + fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND); +#endif +#ifndef __KLIBC__ + setlinebuf(tracefile); +#endif /* __KLIBC__ */ + fputs("\nTracing started.\n", tracefile); +} +#endif /* DEBUG */ diff --git a/shells/dash/files/src/show.h b/shells/dash/files/src/show.h new file mode 100644 index 0000000000000..d0ccac79d4098 --- /dev/null +++ b/shells/dash/files/src/show.h @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 1995 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)show.h 1.1 (Berkeley) 5/4/95 + */ + +#include + +#ifdef DEBUG +union node; +void showtree(union node *); +void trace(const char *, ...); +void tracev(const char *, va_list); +void trargs(char **); +void trputc(int); +void trputs(const char *); +void opentrace(void); +#endif diff --git a/shells/dash/files/src/system.c b/shells/dash/files/src/system.c new file mode 100644 index 0000000000000..844a6410ea7ae --- /dev/null +++ b/shells/dash/files/src/system.c @@ -0,0 +1,199 @@ +/* + * Copyright (c) 2004 + * Herbert Xu . All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef HAVE_ISALPHA +#define isalnum _isalnum +#define iscntrl _iscntrl +#define islower _islower +#define isspace _isspace +#define isalpha _isalpha +#define isdigit _isdigit +#define isprint _isprint +#define isupper _isupper +#define isblank _isblank +#define isgraph _isgraph +#define ispunct _ispunct +#define isxdigit _isxdigit +#include +#undef isalnum +#undef iscntrl +#undef islower +#undef isspace +#undef isalpha +#undef isdigit +#undef isprint +#undef isupper +#undef isblank +#undef isgraph +#undef ispunct +#undef isxdigit +#endif + +#include +#include + +#include "error.h" +#include "output.h" +#include "system.h" + +#ifndef HAVE_MEMPCPY +void *mempcpy(void *dest, const void *src, size_t n) +{ + return memcpy(dest, src, n) + n; +} +#endif + +#ifndef HAVE_STPCPY +char *stpcpy(char *dest, const char *src) +{ + size_t len = strlen(src); + dest[len] = 0; + return mempcpy(dest, src, len); +} +#endif + +#ifndef HAVE_STRCHRNUL +char *strchrnul(const char *s, int c) +{ + char *p = strchr(s, c); + if (!p) + p = (char *)s + strlen(s); + return p; +} +#endif + +#ifndef HAVE_STRSIGNAL +char *strsignal(int sig) +{ + static char buf[19]; + + if ((unsigned)sig < NSIG && sys_siglist[sig]) + return (char *)sys_siglist[sig]; + fmtstr(buf, sizeof(buf), "Signal %d", sig); + return buf; +} +#endif + +#ifndef HAVE_BSEARCH +void *bsearch(const void *key, const void *base, size_t nmemb, + size_t size, int (*cmp)(const void *, const void *)) +{ + while (nmemb) { + size_t mididx = nmemb / 2; + const void *midobj = base + mididx * size; + int diff = cmp(key, midobj); + + if (diff == 0) + return (void *)midobj; + + if (diff > 0) { + base = midobj + size; + nmemb -= mididx + 1; + } else + nmemb = mididx; + } + + return 0; +} +#endif + +#ifndef HAVE_SYSCONF +long sysconf(int name) +{ + sh_error("no sysconf for: %d", name); +} +#endif + +#ifndef HAVE_ISALPHA +int isalnum(int c) { + return _isalnum(c); +} + + +int iscntrl(int c) { + return _iscntrl(c); +} + + +int islower(int c) { + return _islower(c); +} + + +int isspace(int c) { + return _isspace(c); +} + + +int isalpha(int c) { + return _isalpha(c); +} + + +int isdigit(int c) { + return _isdigit(c); +} + + +int isprint(int c) { + return _isprint(c); +} + + +int isupper(int c) { + return _isupper(c); +} + + +#if HAVE_DECL_ISBLANK +int isblank(int c) { + return _isblank(c); +} +#endif + + +int isgraph(int c) { + return _isgraph(c); +} + + +int ispunct(int c) { + return _ispunct(c); +} + + +int isxdigit(int c) { + return _isxdigit(c); +} +#endif + +#if !HAVE_DECL_ISBLANK +int isblank(int c) { + return c == ' ' || c == '\t'; +} +#endif diff --git a/shells/dash/files/src/system.h b/shells/dash/files/src/system.h new file mode 100644 index 0000000000000..a8d09b382a81c --- /dev/null +++ b/shells/dash/files/src/system.h @@ -0,0 +1,109 @@ +/* + * Copyright (c) 2004 + * Herbert Xu . All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include + +#ifndef SSIZE_MAX +#define SSIZE_MAX ((ssize_t)((size_t)-1 >> 1)) +#endif + +static inline void sigclearmask(void) +{ +#ifdef HAVE_SIGSETMASK + sigsetmask(0); +#else + sigset_t set; + sigemptyset(&set); + sigprocmask(SIG_SETMASK, &set, 0); +#endif +} + +#ifndef HAVE_MEMPCPY +void *mempcpy(void *, const void *, size_t); +#endif + +#ifndef HAVE_STPCPY +char *stpcpy(char *, const char *); +#endif + +#ifndef HAVE_STRCHRNUL +char *strchrnul(const char *, int); +#endif + +#ifndef HAVE_STRSIGNAL +char *strsignal(int); +#endif + +#ifndef HAVE_STRTOD +static inline double strtod(const char *nptr, char **endptr) +{ + *endptr = (char *)nptr; + return 0; +} +#endif + +#ifndef HAVE_STRTOIMAX +#define strtoimax strtoll +#endif + +#ifndef HAVE_STRTOUMAX +#define strtoumax strtoull +#endif + +#ifndef HAVE_BSEARCH +void *bsearch(const void *, const void *, size_t, size_t, + int (*)(const void *, const void *)); +#endif + +#ifndef HAVE_KILLPG +static inline int killpg(pid_t pid, int signal) +{ +#ifdef DEBUG + if (pid < 0) + abort(); +#endif + return kill(-pid, signal); +} +#endif + +#ifndef HAVE_SYSCONF +#define _SC_CLK_TCK 2 +long sysconf(int) __attribute__((__noreturn__)); +#endif + +#if !HAVE_DECL_ISBLANK +int isblank(int c); +#endif + +/* + * A trick to suppress uninitialized variable warning without generating any + * code + */ +#define uninitialized_var(x) x = x diff --git a/shells/dash/files/src/trap.c b/shells/dash/files/src/trap.c new file mode 100644 index 0000000000000..17316c959cf38 --- /dev/null +++ b/shells/dash/files/src/trap.c @@ -0,0 +1,418 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#include + +#include "shell.h" +#include "main.h" +#include "nodes.h" /* for other headers */ +#include "eval.h" +#include "jobs.h" +#include "show.h" +#include "options.h" +#include "syntax.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "trap.h" +#include "mystring.h" + +#ifdef HETIO +#include "hetio.h" +#endif + +/* + * Sigmode records the current value of the signal handlers for the various + * modes. A value of zero means that the current handler is not known. + * S_HARD_IGN indicates that the signal was ignored on entry to the shell, + */ + +#define S_DFL 1 /* default signal handling (SIG_DFL) */ +#define S_CATCH 2 /* signal is caught */ +#define S_IGN 3 /* signal is ignored (SIG_IGN) */ +#define S_HARD_IGN 4 /* signal is ignored permenantly */ +#define S_RESET 5 /* temporary - to reset a hard ignored sig */ + + +/* trap handler commands */ +static char *trap[NSIG]; +/* number of non-null traps */ +int trapcnt; +/* current value of signal */ +char sigmode[NSIG - 1]; +/* indicates specified signal received */ +static char gotsig[NSIG - 1]; +/* last pending signal */ +volatile sig_atomic_t pendingsigs; +/* received SIGCHLD */ +int gotsigchld; + +extern char *signal_names[]; + +#ifdef mkinit +INCLUDE "trap.h" +INIT { + sigmode[SIGCHLD - 1] = S_DFL; + setsignal(SIGCHLD); +} +#endif + +/* + * The trap builtin. + */ + +int +trapcmd(int argc, char **argv) +{ + char *action; + char **ap; + int signo; + + nextopt(nullstr); + ap = argptr; + if (!*ap) { + for (signo = 0 ; signo < NSIG ; signo++) { + if (trap[signo] != NULL) { + out1fmt( + "trap -- %s %s\n", + single_quote(trap[signo]), + signal_names[signo] + ); + } + } + return 0; + } + if (!ap[1]) + action = NULL; + else + action = *ap++; + while (*ap) { + if ((signo = decode_signal(*ap, 0)) < 0) { + outfmt(out2, "trap: %s: bad trap\n", *ap); + return 1; + } + INTOFF; + if (action) { + if (action[0] == '-' && action[1] == '\0') + action = NULL; + else { + if (*action) + trapcnt++; + action = savestr(action); + } + } + if (trap[signo]) { + if (*trap[signo]) + trapcnt--; + ckfree(trap[signo]); + } + trap[signo] = action; + if (signo != 0) + setsignal(signo); + INTON; + ap++; + } + return 0; +} + + + +/* + * Clear traps on a fork. + */ + +void +clear_traps(void) +{ + char **tp; + + INTOFF; + for (tp = trap ; tp < &trap[NSIG] ; tp++) { + if (*tp && **tp) { /* trap not NULL or SIG_IGN */ + ckfree(*tp); + *tp = NULL; + if (tp != &trap[0]) + setsignal(tp - trap); + } + } + trapcnt = 0; + INTON; +} + + + +/* + * Set the signal handler for the specified signal. The routine figures + * out what it should be set to. + */ + +void +setsignal(int signo) +{ + int action; + char *t, tsig; + struct sigaction act; + + if ((t = trap[signo]) == NULL) + action = S_DFL; + else if (*t != '\0') + action = S_CATCH; + else + action = S_IGN; + if (rootshell && action == S_DFL) { + switch (signo) { + case SIGINT: + if (iflag || minusc || sflag == 0) + action = S_CATCH; + break; + case SIGQUIT: +#ifdef DEBUG + if (debug) + break; +#endif + /* FALLTHROUGH */ + case SIGTERM: + if (iflag) + action = S_IGN; + break; +#if JOBS + case SIGTSTP: + case SIGTTOU: + if (mflag) + action = S_IGN; + break; +#endif + } + } + + if (signo == SIGCHLD) + action = S_CATCH; + + t = &sigmode[signo - 1]; + tsig = *t; + if (tsig == 0) { + /* + * current setting unknown + */ + if (sigaction(signo, 0, &act) == -1) { + /* + * Pretend it worked; maybe we should give a warning + * here, but other shells don't. We don't alter + * sigmode, so that we retry every time. + */ + return; + } + if (act.sa_handler == SIG_IGN) { + if (mflag && (signo == SIGTSTP || + signo == SIGTTIN || signo == SIGTTOU)) { + tsig = S_IGN; /* don't hard ignore these */ + } else + tsig = S_HARD_IGN; + } else { + tsig = S_RESET; /* force to be set */ + } + } + if (tsig == S_HARD_IGN || tsig == action) + return; + switch (action) { + case S_CATCH: + act.sa_handler = onsig; + break; + case S_IGN: + act.sa_handler = SIG_IGN; + break; + default: + act.sa_handler = SIG_DFL; + } + *t = action; + act.sa_flags = 0; + sigfillset(&act.sa_mask); + sigaction(signo, &act, 0); +} + +/* + * Ignore a signal. + */ + +void +ignoresig(int signo) +{ + if (sigmode[signo - 1] != S_IGN && sigmode[signo - 1] != S_HARD_IGN) { + signal(signo, SIG_IGN); + } + sigmode[signo - 1] = S_HARD_IGN; +} + + + +/* + * Signal handler. + */ + +void +onsig(int signo) +{ + if (signo == SIGCHLD) { + gotsigchld = 1; + if (!trap[SIGCHLD]) + return; + } + + gotsig[signo - 1] = 1; + pendingsigs = signo; + + if (signo == SIGINT && !trap[SIGINT]) { + if (!suppressint) + onint(); + intpending = 1; + } +} + + + +/* + * Called to execute a trap. Perhaps we should avoid entering new trap + * handlers while we are executing a trap handler. + */ + +void dotrap(void) +{ + char *p; + char *q; + int i; + int savestatus; + + savestatus = exitstatus; + pendingsigs = 0; + barrier(); + + for (i = 0, q = gotsig; i < NSIG - 1; i++, q++) { + if (!*q) + continue; + *q = 0; + + p = trap[i + 1]; + if (!p) + continue; + evalstring(p, 0); + exitstatus = savestatus; + if (evalskip) + break; + } +} + + + +/* + * Controls whether the shell is interactive or not. + */ + + +void +setinteractive(int on) +{ + static int is_interactive; + + if (++on == is_interactive) + return; + is_interactive = on; + setsignal(SIGINT); + setsignal(SIGQUIT); + setsignal(SIGTERM); +} + + + +/* + * Called to exit the shell. + */ + +void +exitshell(void) +{ + struct jmploc loc; + char *p; + volatile int status; + +#ifdef HETIO + hetio_reset_term(); +#endif + status = exitstatus; + TRACE(("pid %d, exitshell(%d)\n", getpid(), status)); + if (setjmp(loc.loc)) { + if (exception == EXEXIT) + status = exitstatus; + goto out; + } + handler = &loc; + if ((p = trap[0])) { + trap[0] = NULL; + evalskip = 0; + evalstring(p, 0); + } +out: + /* + * Disable job control so that whoever had the foreground before we + * started can get it back. + */ + if (likely(!setjmp(loc.loc))) + setjobctl(0); + flushall(); + _exit(status); + /* NOTREACHED */ +} + +int decode_signal(const char *string, int minsig) +{ + int signo; + + if (is_number(string)) { + signo = atoi(string); + if (signo >= NSIG) { + return -1; + } + return signo; + } + + for (signo = minsig; signo < NSIG; signo++) { + if (!strcasecmp(string, signal_names[signo])) { + return signo; + } + } + + return -1; +} diff --git a/shells/dash/files/src/trap.h b/shells/dash/files/src/trap.h new file mode 100644 index 0000000000000..7573fd7c1cff9 --- /dev/null +++ b/shells/dash/files/src/trap.h @@ -0,0 +1,57 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)trap.h 8.3 (Berkeley) 6/5/95 + */ + +#include + +extern int trapcnt; +extern char sigmode[]; +extern volatile sig_atomic_t pendingsigs; +extern int gotsigchld; + +int trapcmd(int, char **); +void clear_traps(void); +void setsignal(int); +void ignoresig(int); +void onsig(int); +void dotrap(void); +void setinteractive(int); +void exitshell(void) __attribute__((__noreturn__)); +int decode_signal(const char *, int); + +static inline int have_traps(void) +{ + return trapcnt; +} diff --git a/shells/dash/files/src/var.c b/shells/dash/files/src/var.c new file mode 100644 index 0000000000000..fa248544bccf2 --- /dev/null +++ b/shells/dash/files/src/var.c @@ -0,0 +1,712 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include +#ifdef HAVE_PATHS_H +#include +#endif + +/* + * Shell variables. + */ + +#include "shell.h" +#include "output.h" +#include "expand.h" +#include "nodes.h" /* for other headers */ +#include "exec.h" +#include "syntax.h" +#include "options.h" +#include "mail.h" +#include "var.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" +#include "parser.h" +#include "show.h" +#ifndef SMALL +#include "myhistedit.h" +#endif +#include "system.h" + + +#define VTABSIZE 39 + + +struct localvar_list { + struct localvar_list *next; + struct localvar *lv; +}; + +MKINIT struct localvar_list *localvar_stack; + +const char defpathvar[] = + "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"; +#ifdef IFS_BROKEN +const char defifsvar[] = "IFS= \t\n"; +#else +const char defifs[] = " \t\n"; +#endif + +int lineno; +char linenovar[sizeof("LINENO=")+sizeof(int)*CHAR_BIT/3+1] = "LINENO="; + +/* Some macros in var.h depend on the order, add new variables to the end. */ +struct var varinit[] = { +#if ATTY + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "ATTY\0", 0 }, +#endif +#ifdef IFS_BROKEN + { 0, VSTRFIXED|VTEXTFIXED, defifsvar, 0 }, +#else + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "IFS\0", 0 }, +#endif + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "MAIL\0", changemail }, + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "MAILPATH\0", changemail }, + { 0, VSTRFIXED|VTEXTFIXED, defpathvar, changepath }, + { 0, VSTRFIXED|VTEXTFIXED, "PS1=$ ", 0 }, + { 0, VSTRFIXED|VTEXTFIXED, "PS2=> ", 0 }, + { 0, VSTRFIXED|VTEXTFIXED, "PS4=+ ", 0 }, + { 0, VSTRFIXED|VTEXTFIXED, "OPTIND=1", getoptsreset }, +#ifdef WITH_LINENO + { 0, VSTRFIXED|VTEXTFIXED, linenovar, 0 }, +#endif +#ifndef SMALL + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "TERM\0", 0 }, + { 0, VSTRFIXED|VTEXTFIXED|VUNSET, "HISTSIZE\0", sethistsize }, +#endif +}; + +STATIC struct var *vartab[VTABSIZE]; + +STATIC struct var **hashvar(const char *); +STATIC int vpcmp(const void *, const void *); +STATIC struct var **findvar(struct var **, const char *); + +/* + * Initialize the varable symbol tables and import the environment + */ + +#ifdef mkinit +INCLUDE +INCLUDE +INCLUDE +INCLUDE "cd.h" +INCLUDE "output.h" +INCLUDE "var.h" +MKINIT char **environ; +INIT { + char **envp; + static char ppid[32] = "PPID="; + const char *p; + struct stat st1, st2; + + initvar(); + for (envp = environ ; *envp ; envp++) { + p = endofname(*envp); + if (p != *envp && *p == '=') { + setvareq(*envp, VEXPORT|VTEXTFIXED); + } + } + + setvarint("OPTIND", 1, 0); + + fmtstr(ppid + 5, sizeof(ppid) - 5, "%ld", (long) getppid()); + setvareq(ppid, VTEXTFIXED); + + p = lookupvar("PWD"); + if (p) + if (*p != '/' || stat(p, &st1) || stat(".", &st2) || + st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino) + p = 0; + setpwd(p, 0); +} + +RESET { + unwindlocalvars(0); +} +#endif + + +/* + * This routine initializes the builtin variables. It is called when the + * shell is initialized. + */ + +void +initvar(void) +{ + struct var *vp; + struct var *end; + struct var **vpp; + + vp = varinit; + end = vp + sizeof(varinit) / sizeof(varinit[0]); + do { + vpp = hashvar(vp->text); + vp->next = *vpp; + *vpp = vp; + } while (++vp < end); + /* + * PS1 depends on uid + */ + if (!geteuid()) + vps1.text = "PS1=# "; +} + +/* + * Set the value of a variable. The flags argument is ored with the + * flags of the variable. If val is NULL, the variable is unset. + */ + +struct var *setvar(const char *name, const char *val, int flags) +{ + char *p, *q; + size_t namelen; + char *nameeq; + size_t vallen; + struct var *vp; + + q = endofname(name); + p = strchrnul(q, '='); + namelen = p - name; + if (!namelen || p != q) + sh_error("%.*s: bad variable name", namelen, name); + vallen = 0; + if (val == NULL) { + flags |= VUNSET; + } else { + vallen = strlen(val); + } + INTOFF; + p = mempcpy(nameeq = ckmalloc(namelen + vallen + 2), name, namelen); + if (val) { + *p++ = '='; + p = mempcpy(p, val, vallen); + } + *p = '\0'; + vp = setvareq(nameeq, flags | VNOSAVE); + INTON; + + return vp; +} + +/* + * Set the given integer as the value of a variable. The flags argument is + * ored with the flags of the variable. + */ + +intmax_t setvarint(const char *name, intmax_t val, int flags) +{ + int len = max_int_length(sizeof(val)); + char buf[len]; + + fmtstr(buf, len, "%" PRIdMAX, val); + setvar(name, buf, flags); + return val; +} + + + +/* + * Same as setvar except that the variable and value are passed in + * the first argument as name=value. Since the first argument will + * be actually stored in the table, it should not be a string that + * will go away. + * Called with interrupts off. + */ + +struct var *setvareq(char *s, int flags) +{ + struct var *vp, **vpp; + + vpp = hashvar(s); + flags |= (VEXPORT & (((unsigned) (1 - aflag)) - 1)); + vpp = findvar(vpp, s); + vp = *vpp; + if (vp) { + if (vp->flags & VREADONLY) { + const char *n; + + if (flags & VNOSAVE) + free(s); + n = vp->text; + sh_error("%.*s: is read only", strchrnul(n, '=') - n, + n); + } + + if (flags & VNOSET) + goto out; + + if (vp->func && (flags & VNOFUNC) == 0) + (*vp->func)(strchrnul(s, '=') + 1); + + if ((vp->flags & (VTEXTFIXED|VSTACK)) == 0) + ckfree(vp->text); + + if (((flags & (VEXPORT|VREADONLY|VSTRFIXED|VUNSET)) | + (vp->flags & VSTRFIXED)) == VUNSET) { + *vpp = vp->next; + ckfree(vp); +out_free: + if ((flags & (VTEXTFIXED|VSTACK|VNOSAVE)) == VNOSAVE) + ckfree(s); + goto out; + } + + flags |= vp->flags & ~(VTEXTFIXED|VSTACK|VNOSAVE|VUNSET); + } else { + if (flags & VNOSET) + goto out; + if ((flags & (VEXPORT|VREADONLY|VSTRFIXED|VUNSET)) == VUNSET) + goto out_free; + /* not found */ + vp = ckmalloc(sizeof (*vp)); + vp->next = *vpp; + vp->func = NULL; + *vpp = vp; + } + if (!(flags & (VTEXTFIXED|VSTACK|VNOSAVE))) + s = savestr(s); + vp->text = s; + vp->flags = flags; + +out: + return vp; +} + + + +/* + * Process a linked list of variable assignments. + */ + +void +listsetvar(struct strlist *list, int flags) +{ + struct strlist *lp; + + lp = list; + if (!lp) + return; + INTOFF; + do { + setvareq(lp->text, flags); + } while ((lp = lp->next)); + INTON; +} + + +/* + * Find the value of a variable. Returns NULL if not set. + */ + +char * +lookupvar(const char *name) +{ + struct var *v; + + if ((v = *findvar(hashvar(name), name)) && !(v->flags & VUNSET)) { +#ifdef WITH_LINENO + if (v == &vlineno && v->text == linenovar) { + fmtstr(linenovar+7, sizeof(linenovar)-7, "%d", lineno); + } +#endif + return strchrnul(v->text, '=') + 1; + } + return NULL; +} + +intmax_t lookupvarint(const char *name) +{ + return atomax(lookupvar(name) ?: nullstr, 0); +} + + + +/* + * Generate a list of variables satisfying the given conditions. + */ + +char ** +listvars(int on, int off, char ***end) +{ + struct var **vpp; + struct var *vp; + char **ep; + int mask; + + STARTSTACKSTR(ep); + vpp = vartab; + mask = on | off; + do { + for (vp = *vpp ; vp ; vp = vp->next) + if ((vp->flags & mask) == on) { + if (ep == stackstrend()) + ep = growstackstr(); + *ep++ = (char *) vp->text; + } + } while (++vpp < vartab + VTABSIZE); + if (ep == stackstrend()) + ep = growstackstr(); + if (end) + *end = ep; + *ep++ = NULL; + return grabstackstr(ep); +} + + + +/* + * POSIX requires that 'set' (but not export or readonly) output the + * variables in lexicographic order - by the locale's collating order (sigh). + * Maybe we could keep them in an ordered balanced binary tree + * instead of hashed lists. + * For now just roll 'em through qsort for printing... + */ + +int +showvars(const char *prefix, int on, int off) +{ + const char *sep; + char **ep, **epend; + + ep = listvars(on, off, &epend); + qsort(ep, epend - ep, sizeof(char *), vpcmp); + + sep = *prefix ? spcstr : prefix; + + for (; ep < epend; ep++) { + const char *p; + const char *q; + + p = strchrnul(*ep, '='); + q = nullstr; + if (*p) + q = single_quote(++p); + + out1fmt("%s%s%.*s%s\n", prefix, sep, (int)(p - *ep), *ep, q); + } + + return 0; +} + + + +/* + * The export and readonly commands. + */ + +int +exportcmd(int argc, char **argv) +{ + struct var *vp; + char *name; + const char *p; + char **aptr; + int flag = argv[0][0] == 'r'? VREADONLY : VEXPORT; + int notp; + + notp = nextopt("p") - 'p'; + if (notp && ((name = *(aptr = argptr)))) { + do { + if ((p = strchr(name, '=')) != NULL) { + p++; + } else { + if ((vp = *findvar(hashvar(name), name))) { + vp->flags |= flag; + continue; + } + } + setvar(name, p, flag); + } while ((name = *++aptr) != NULL); + } else { + showvars(argv[0], flag, 0); + } + return 0; +} + + +/* + * The "local" command. + */ + +int +localcmd(int argc, char **argv) +{ + char *name; + + if (!localvar_stack) + sh_error("not in a function"); + + argv = argptr; + while ((name = *argv++) != NULL) { + mklocal(name); + } + return 0; +} + + +/* + * Make a variable a local variable. When a variable is made local, it's + * value and flags are saved in a localvar structure. The saved values + * will be restored when the shell function returns. We handle the name + * "-" as a special case. + */ + +void mklocal(char *name) +{ + struct localvar *lvp; + struct var **vpp; + struct var *vp; + + INTOFF; + lvp = ckmalloc(sizeof (struct localvar)); + if (name[0] == '-' && name[1] == '\0') { + char *p; + p = ckmalloc(sizeof(optlist)); + lvp->text = memcpy(p, optlist, sizeof(optlist)); + vp = NULL; + } else { + char *eq; + + vpp = hashvar(name); + vp = *findvar(vpp, name); + eq = strchr(name, '='); + if (vp == NULL) { + if (eq) + vp = setvareq(name, VSTRFIXED); + else + vp = setvar(name, NULL, VSTRFIXED); + lvp->flags = VUNSET; + } else { + lvp->text = vp->text; + lvp->flags = vp->flags; + vp->flags |= VSTRFIXED|VTEXTFIXED; + if (eq) + setvareq(name, 0); + } + } + lvp->vp = vp; + lvp->next = localvar_stack->lv; + localvar_stack->lv = lvp; + INTON; +} + + +/* + * Called after a function returns. + * Interrupts must be off. + */ + +void +poplocalvars(int keep) +{ + struct localvar_list *ll; + struct localvar *lvp, *next; + struct var *vp; + + INTOFF; + ll = localvar_stack; + localvar_stack = ll->next; + + next = ll->lv; + ckfree(ll); + + while ((lvp = next) != NULL) { + next = lvp->next; + vp = lvp->vp; + TRACE(("poplocalvar %s\n", vp ? vp->text : "-")); + if (keep) { + int bits = VSTRFIXED; + + if (lvp->flags != VUNSET) { + if (vp->text == lvp->text) + bits |= VTEXTFIXED; + else if (!(lvp->flags & (VTEXTFIXED|VSTACK))) + ckfree(lvp->text); + } + + vp->flags &= ~bits; + vp->flags |= (lvp->flags & bits); + + if ((vp->flags & + (VEXPORT|VREADONLY|VSTRFIXED|VUNSET)) == VUNSET) + unsetvar(vp->text); + } else if (vp == NULL) { /* $- saved */ + memcpy(optlist, lvp->text, sizeof(optlist)); + ckfree(lvp->text); + optschanged(); + } else if (lvp->flags == VUNSET) { + vp->flags &= ~(VSTRFIXED|VREADONLY); + unsetvar(vp->text); + } else { + if (vp->func) + (*vp->func)(strchrnul(lvp->text, '=') + 1); + if ((vp->flags & (VTEXTFIXED|VSTACK)) == 0) + ckfree(vp->text); + vp->flags = lvp->flags; + vp->text = lvp->text; + } + ckfree(lvp); + } + INTON; +} + + +/* + * Create a new localvar environment. + */ +struct localvar_list *pushlocalvars(void) +{ + struct localvar_list *ll; + + INTOFF; + ll = ckmalloc(sizeof(*ll)); + ll->lv = NULL; + ll->next = localvar_stack; + localvar_stack = ll; + INTON; + + return ll->next; +} + + +void unwindlocalvars(struct localvar_list *stop) +{ + while (localvar_stack != stop) + poplocalvars(0); +} + + +/* + * The unset builtin command. We unset the function before we unset the + * variable to allow a function to be unset when there is a readonly variable + * with the same name. + */ + +int +unsetcmd(int argc, char **argv) +{ + char **ap; + int i; + int flag = 0; + + while ((i = nextopt("vf")) != '\0') { + flag = i; + } + + for (ap = argptr; *ap ; ap++) { + if (flag != 'f') { + unsetvar(*ap); + continue; + } + if (flag != 'v') + unsetfunc(*ap); + } + return 0; +} + + +/* + * Unset the specified variable. + */ + +void unsetvar(const char *s) +{ + setvar(s, 0, 0); +} + + + +/* + * Find the appropriate entry in the hash table from the name. + */ + +STATIC struct var ** +hashvar(const char *p) +{ + unsigned int hashval; + + hashval = ((unsigned char) *p) << 4; + while (*p && *p != '=') + hashval += (unsigned char) *p++; + return &vartab[hashval % VTABSIZE]; +} + + + +/* + * Compares two strings up to the first = or '\0'. The first + * string must be terminated by '='; the second may be terminated by + * either '=' or '\0'. + */ + +int +varcmp(const char *p, const char *q) +{ + int c, d; + + while ((c = *p) == (d = *q)) { + if (!c || c == '=') + goto out; + p++; + q++; + } + if (c == '=') + c = 0; + if (d == '=') + d = 0; +out: + return c - d; +} + +STATIC int +vpcmp(const void *a, const void *b) +{ + return varcmp(*(const char **)a, *(const char **)b); +} + +STATIC struct var ** +findvar(struct var **vpp, const char *name) +{ + for (; *vpp; vpp = &(*vpp)->next) { + if (varequal((*vpp)->text, name)) { + break; + } + } + return vpp; +} diff --git a/shells/dash/files/src/var.h b/shells/dash/files/src/var.h new file mode 100644 index 0000000000000..872e2dbb71033 --- /dev/null +++ b/shells/dash/files/src/var.h @@ -0,0 +1,175 @@ +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1997-2005 + * Herbert Xu . All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)var.h 8.2 (Berkeley) 5/4/95 + */ + +#include + +/* + * Shell variables. + */ + +/* flags */ +#define VEXPORT 0x01 /* variable is exported */ +#define VREADONLY 0x02 /* variable cannot be modified */ +#define VSTRFIXED 0x04 /* variable struct is statically allocated */ +#define VTEXTFIXED 0x08 /* text is statically allocated */ +#define VSTACK 0x10 /* text is allocated on the stack */ +#define VUNSET 0x20 /* the variable is not set */ +#define VNOFUNC 0x40 /* don't call the callback function */ +#define VNOSET 0x80 /* do not set variable - just readonly test */ +#define VNOSAVE 0x100 /* when text is on the heap before setvareq */ + + +struct var { + struct var *next; /* next entry in hash list */ + int flags; /* flags are defined above */ + const char *text; /* name=value */ + void (*func)(const char *); + /* function to be called when */ + /* the variable gets set/unset */ +}; + + +struct localvar { + struct localvar *next; /* next local variable in list */ + struct var *vp; /* the variable that was made local */ + int flags; /* saved flags */ + const char *text; /* saved text */ +}; + +struct localvar_list; + + +extern struct localvar *localvars; +extern struct var varinit[]; + +#if ATTY +#define vatty varinit[0] +#define vifs varinit[1] +#else +#define vifs varinit[0] +#endif +#define vmail (&vifs)[1] +#define vmpath (&vmail)[1] +#define vpath (&vmpath)[1] +#define vps1 (&vpath)[1] +#define vps2 (&vps1)[1] +#define vps4 (&vps2)[1] +#define voptind (&vps4)[1] +#ifdef WITH_LINENO +#define vlineno (&voptind)[1] +#endif +#ifndef SMALL +#ifdef WITH_LINENO +#define vterm (&vlineno)[1] +#else +#define vterm (&voptind)[1] +#endif +#define vhistsize (&vterm)[1] +#endif + +#ifdef IFS_BROKEN +extern const char defifsvar[]; +#define defifs (defifsvar + 4) +#else +extern const char defifs[]; +#endif +extern const char defpathvar[]; +#define defpath (defpathvar + 36) + +extern int lineno; +extern char linenovar[]; + +/* + * The following macros access the values of the above variables. + * They have to skip over the name. They return the null string + * for unset variables. + */ + +#define ifsval() (vifs.text + 4) +#define ifsset() ((vifs.flags & VUNSET) == 0) +#define mailval() (vmail.text + 5) +#define mpathval() (vmpath.text + 9) +#define pathval() (vpath.text + 5) +#define ps1val() (vps1.text + 4) +#define ps2val() (vps2.text + 4) +#define ps4val() (vps4.text + 4) +#define optindval() (voptind.text + 7) +#define linenoval() (vlineno.text + 7) +#ifndef SMALL +#define histsizeval() (vhistsize.text + 9) +#define termval() (vterm.text + 5) +#endif + +#if ATTY +#define attyset() ((vatty.flags & VUNSET) == 0) +#endif +#define mpathset() ((vmpath.flags & VUNSET) == 0) + +void initvar(void); +struct var *setvar(const char *name, const char *val, int flags); +intmax_t setvarint(const char *, intmax_t, int); +struct var *setvareq(char *s, int flags); +struct strlist; +void listsetvar(struct strlist *, int); +char *lookupvar(const char *); +intmax_t lookupvarint(const char *); +char **listvars(int, int, char ***); +#define environment() listvars(VEXPORT, VUNSET, 0) +int showvars(const char *, int, int); +int exportcmd(int, char **); +int localcmd(int, char **); +void mklocal(char *); +struct localvar_list *pushlocalvars(void); +void poplocalvars(int); +void unwindlocalvars(struct localvar_list *stop); +int unsetcmd(int, char **); +void unsetvar(const char *); +int varcmp(const char *, const char *); + +static inline int varequal(const char *a, const char *b) { + return !varcmp(a, b); +} + +/* + * Search the environment of a builtin command. + */ + +static inline char *bltinlookup(const char *name) +{ + return lookupvar(name); +} + + diff --git a/shells/dash/patches/manual-configure b/shells/dash/patches/manual-configure new file mode 100644 index 0000000000000..a1997b81617d8 --- /dev/null +++ b/shells/dash/patches/manual-configure @@ -0,0 +1,28 @@ +$NetBSD$ + +Check for stat64 in sys/stat.h before redefining. + +--- configure.orig 2015-11-30 17:52:08.000000000 +0000 ++++ configure +@@ -4663,6 +4663,11 @@ if test "x$ac_cv_func_stat64" = xyes; th + + else + ++ac_fn_c_check_decl "$LINENO" "stat64" "ac_cv_have_decl_stat64" "#include ++" ++if test "x$ac_cv_have_decl_stat64" = xyes; then : ++ ++else + + $as_echo "#define fstat64 fstat" >>confdefs.h + +@@ -4676,6 +4681,9 @@ $as_echo "#define stat64 stat" >>confdef + fi + + ++fi ++ ++ + ac_fn_c_check_func "$LINENO" "open64" "ac_cv_func_open64" + if test "x$ac_cv_func_open64" = xyes; then : + diff --git a/shells/dash/patches/manual-src_Makefile.in b/shells/dash/patches/manual-src_Makefile.in new file mode 100644 index 0000000000000..a4fb6f350e396 --- /dev/null +++ b/shells/dash/patches/manual-src_Makefile.in @@ -0,0 +1,46 @@ +$NetBSD$ + +Expand rules to avoid gmake-isms and ensure we use a working shell. + +--- src/Makefile.in.orig 2015-11-30 16:33:12.000000000 +0000 ++++ src/Makefile.in +@@ -691,30 +691,30 @@ uninstall-man: uninstall-man1 + + + token.h token_vars.h: mktokens +- sh $^ ++ $(SHELL) mktokens + + builtins.def: builtins.def.in $(top_builddir)/config.h +- $(COMPILE) -E -x c -o $@ $< ++ $(COMPILE) -E -x c -o $@ builtins.def.in + + builtins.c builtins.h: mkbuiltins builtins.def +- sh $^ ++ $(SHELL) mkbuiltins builtins.def + + init.c: mkinit $(dash_CFILES) +- ./$^ ++ ./mkinit $(dash_CFILES) + + nodes.c nodes.h: mknodes nodetypes nodes.c.pat +- ./$^ ++ ./mknodes nodetypes nodes.c.pat + + syntax.c syntax.h: mksyntax +- ./$^ ++ ./mksyntax + + signames.c: mksignames +- ./$^ ++ ./mksignames + + mksyntax: token.h + +-$(HELPERS): %: %.c +- $(COMPILE_FOR_BUILD) -o $@ $< ++$(HELPERS): ++ $(COMPILE_FOR_BUILD) -o $@ $@.c + + # Tell versions [3.59,3.63) of GNU make to not export all variables. + # Otherwise a system limit (for SysV at least) may be exceeded. diff --git a/shells/dash/patches/manual-src_bltin_printf.c b/shells/dash/patches/manual-src_bltin_printf.c new file mode 100644 index 0000000000000..b95ca06c1c45e --- /dev/null +++ b/shells/dash/patches/manual-src_bltin_printf.c @@ -0,0 +1,29 @@ +$NetBSD$ + +Require octal sequences start with \0 to match behaviour of other shells, patch +from gentoo. + +--- src/bltin/printf.c.orig 2015-11-30 16:33:12.000000000 +0000 ++++ src/bltin/printf.c +@@ -247,18 +247,9 @@ conv_escape_str(char *str) + * They start with a \0, and are followed by 0, 1, 2, + * or 3 octal digits. + */ +- if (ch == '0') { +- unsigned char i; +- i = 3; +- ch = 0; +- do { +- unsigned k = octtobin(*str); +- if (k > 7) +- break; +- str++; +- ch <<= 3; +- ch += k; +- } while (--i); ++ if (ch >= '1' && ch <= '9') { ++ ch = '\\'; ++ --str; + continue; + } + diff --git a/shells/dash/patches/manual-src_jobs.c b/shells/dash/patches/manual-src_jobs.c new file mode 100644 index 0000000000000..a96ead0cb330b --- /dev/null +++ b/shells/dash/patches/manual-src_jobs.c @@ -0,0 +1,15 @@ +$NetBSD$ + +Fix format string, from Debian. + +--- src/jobs.c.orig 2015-11-30 17:52:08.000000000 +0000 ++++ src/jobs.c +@@ -427,7 +427,7 @@ sprint_status(char *s, int status, int s + goto out; + #endif + } +- col = fmtstr(s, 32, strsignal(st)); ++ col = fmtstr(s, 32, "%s", strsignal(st)); + #ifdef WCOREDUMP + if (WCOREDUMP(status)) { + col += fmtstr(s + col, 16, " (core dumped)"); diff --git a/shells/dash/patches/manual-src_main.c b/shells/dash/patches/manual-src_main.c new file mode 100644 index 0000000000000..8c877b7a72fe7 --- /dev/null +++ b/shells/dash/patches/manual-src_main.c @@ -0,0 +1,15 @@ +$NetBSD$ + +Disable "sh -c" optimisation, fixes SIGPIPE failures. From Debian. + +--- src/main.c.orig 2015-11-30 17:52:08.000000000 +0000 ++++ src/main.c +@@ -171,7 +171,7 @@ state2: + state3: + state = 4; + if (minusc) +- evalstring(minusc, sflag ? 0 : EV_EXIT); ++ evalstring(minusc, 0); + + if (sflag || minusc == NULL) { + state4: /* XXX ??? - why isn't this before the "if" statement */ diff --git a/shells/dash/patches/manual-src_mkbuiltins b/shells/dash/patches/manual-src_mkbuiltins new file mode 100644 index 0000000000000..725da387950e2 --- /dev/null +++ b/shells/dash/patches/manual-src_mkbuiltins @@ -0,0 +1,32 @@ +$NetBSD$ + +Fix build failures on SunOS if /usr/xpg4/bin is not in PATH. + +--- mkbuiltins.orig 2015-12-03 14:04:37.000000000 +0000 ++++ mkbuiltins +@@ -84,9 +84,13 @@ awk '{ for (i = 2 ; i <= NF ; i++) { + opt = substr($2, 2) + $2 = $3 + } +- printf "\t{ \"%s\", %s, %d },\n", $1, +- (opt ~ /n/) ? "NULL" : $2, +- (opt ~ /s/) + (opt ~ /[su]/) * 2 + (opt ~ /a/) * 4 ++ mask = 0 ++ cmd = $2 ++ if (opt ~ /n/) { cmd = "NULL" } ++ if (opt ~ /s/) { mask += 1 } ++ if (opt ~ /[su]/) { mask += 2 } ++ if (opt ~ /a/) { mask += 4} ++ printf "\t{ \"%s\", %s, %d },\n", $1, cmd, mask + }' + echo '};' + +@@ -97,7 +101,7 @@ cat <<\! + */ + + ! +-sed 's/ -[a-z]*//' $temp2 | nl -b a -v 0 | LC_COLLATE=C sort -u -k 3,3 | ++sed 's/ -[a-z]*//' $temp2 | nl -ba -v0 | LC_COLLATE=C sort -u -k 3,3 | + tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | + awk '{ printf "#define %s (builtincmd + %d)\n", $3, $1}' + printf '\n#define NUMBUILTINS %d\n' $(wc -l < $temp2) diff --git a/shells/dash/patches/manual.README b/shells/dash/patches/manual.README new file mode 100644 index 0000000000000..88b6dffe4b8bb --- /dev/null +++ b/shells/dash/patches/manual.README @@ -0,0 +1,9 @@ +$NetBSD$ + +The "manual-*" patch files are used to maintain the pkgsrc version of +dash. files/ should contain an unmodified extract of the dash release +tarball, then these patches are applied on top, with both the modified +file and its patch committed to pkgsrc. + +This ensures all our changes are correctly documented and makes upgrades +to newer releases easier. diff --git a/shells/dash/patches/patch-src_mkbuiltins b/shells/dash/patches/patch-src_mkbuiltins deleted file mode 100644 index 3d495f007e213..0000000000000 --- a/shells/dash/patches/patch-src_mkbuiltins +++ /dev/null @@ -1,14 +0,0 @@ -$NetBSD: patch-src_mkbuiltins,v 1.1 2013/01/06 16:19:08 cheusov Exp $ - -# This patch fixes build failure on SunOS if /usr/xpg4/bin is not in PATH ---- src/mkbuiltins.orig 2011-03-15 07:18:06.000000000 +0000 -+++ src/mkbuiltins -@@ -97,7 +97,7 @@ cat <<\! - */ - - ! --sed 's/ -[a-z]*//' $temp2 | nl -b a -v 0 | LC_COLLATE=C sort -u -k 3,3 | -+sed 's/ -[a-z]*//' $temp2 | nl -ba -v0 | LC_COLLATE=C sort -u -k 3,3 | - tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | - awk '{ printf "#define %s (builtincmd + %d)\n", $3, $1}' - printf '\n#define NUMBUILTINS %d\n' $(wc -l < $temp2)