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glibc-2.22-roundup.patch
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glibc-2.22-roundup.patch
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diff --git a/ChangeLog b/ChangeLog
index cb9124e..376355f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,300 @@
+2016-02-12 Florian Weimer <fweimer@redhat.com>
+
+ * misc/bug18240.c (do_test): Set RLIMIT_AS.
+
+2016-01-27 Paul Eggert <eggert@cs.ucla.edu>
+
+ [BZ #18240]
+ * misc/hsearch_r.c (isprime, __hcreate_r): Protect against
+ unsigned int wraparound.
+
+2016-01-27 Florian Weimer <fweimer@redhat.com>
+
+ [BZ #18240]
+ * misc/bug18240.c: New test.
+ * misc/Makefile (tests): Add it.
+
+2015-08-25 Ondřej Bílka <neleai@seznam.cz>
+
+ [BZ #18240]
+ * misc/hsearch_r.c (__hcreate_r): Handle overflow.
+
+2015-10-27 Ludovic Courtès <ludo@gnu.org>
+
+ * locale/loadlocale.c (_nl_intern_locale_data): Change assertion
+ on CNT to a conditional jump to 'puntdata'.
+
+2015-08-18 Alan Modra <amodra@gmail.com>
+
+ [BZ #18421]
+ * sysdeps/hppa/start.S [SHARED]: Use .section .data.rel.ro and define
+ .Lp__global.
+ (_start): Load %dp via .Lp__global.
+ [!SHARED]: Use .section .rodata.
+
+2015-08-09 John David Anglin <danglin@gcc.gnu.org>
+
+ [BZ #18480]
+ * sysdeps/unix/sysv/linux/hppa/sysdep.h (LOAD_ARGS_0, LOAD_ARGS_1,
+ LOAD_ARGS_2, LOAD_ARGS_3, LOAD_ARGS_4, LOAD_ARGS_5, LOAD_ARGS_6):
+ Define.
+ (LOAD_REGS_0, LOAD_REGS_1, LOAD_REGS_2, LOAD_REGS_3, LOAD_REGS_4,
+ LOAD_REGS_5, LOAD_REGS_6): Update.
+ (INTERNAL_SYSCALL): Update using new LOAD defines.
+ (INTERNAL_SYSCALL_NCS): Likewise.
+ * sysdeps/unix/sysv/linux/hppa/syscall.c (syscall): Likewise.
+
+2015-09-26 Paul Pluzhnikov <ppluzhnikov@google.com>
+
+ [BZ #18985]
+ * time/strftime_l.c (a_wkday, f_wkday, a_month, f_month): Range check.
+ (__strftime_internal): Likewise.
+ * time/tst-strftime.c (do_bz18985): New test.
+ (do_test): Call it.
+
+2015-08-08 Paul Pluzhnikov <ppluzhnikov@google.com>
+
+ [BZ #17905]
+ * catgets/Makefile (tst-catgets-mem): New test.
+ * catgets/catgets.c (catopen): Don't use unbounded alloca.
+ * catgets/open_catalog.c (__open_catalog): Likewise.
+ * catgets/tst-catgets.c (do_bz17905): Test unbounded alloca.
+
+2015-12-31 Aurelien Jarno <aurelien@aurel32.net>
+
+ * sysdeps/unix/sysv/linux/alpha/libc.abilist [GLIBC_2.22]: Move
+ to keep the file sorted.
+ * sysdeps/unix/sysv/linux/hppa/libc.abilist [GLIBC_2.22]: Likewise.
+
+2015-12-17 Paul E. Murphy <murphyp@linux.vnet.ibm.com>
+
+ [BZ #19174]
+ * sysdeps/powerpc/nptl/elide.h (__elide_lock): Fix usage of
+ .skip_lock_out_of_tbegin_retries.
+ * sysdeps/unix/sysv/linux/powerpc/elision-lock.c
+ (__lll_lock_elision): Likewise, and respect a value of
+ try_tbegin <= 0.
+
+2015-11-20 Roland McGrath <roland@hack.frob.com>
+
+ * sysdeps/nacl/dl-map-segments.h (_dl_map_segments): Use
+ __glibc_likely instead of __builtin_expect. After falling back to
+ dyncode_create in a non-ET_DYN case, use the allocate_code_data
+ system interface to register the code pages as occupied.
+
+2015-11-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config.make.in (have-glob-dat-reloc): New.
+ * configure.ac (libc_cv_has_glob_dat): New. Set to yes if
+ target supports GLOB_DAT relocaton. AC_SUBST.
+ * configure: Regenerated.
+ * elf/Makefile (tests): Add tst-prelink.
+ (tests-special): Add $(objpfx)tst-prelink-cmp.out.
+ (tst-prelink-ENV): New.
+ ($(objpfx)tst-prelink-conflict.out): Likewise.
+ ($(objpfx)tst-prelink-cmp.out): Likewise.
+ * sysdeps/x86/tst-prelink.c: Moved to ...
+ * elf/tst-prelink.c: Here.
+ * sysdeps/x86/tst-prelink.exp: Moved to ...
+ * elf/tst-prelink.exp: Here.
+ * sysdeps/x86/Makefile (tests): Don't add tst-prelink.
+ (tst-prelink-ENV): Removed.
+ ($(objpfx)tst-prelink-conflict.out): Likewise.
+ ($(objpfx)tst-prelink-cmp.out): Likewise.
+ (tests-special): Don't add $(objpfx)tst-prelink-cmp.out.
+
+2015-11-10 Roland McGrath <roland@hack.frob.com>
+
+ * elf/dl-load.c (open_verify): Take new argument FD.
+ Skip __open call if passed FD is not -1.
+ (_dl_map_object, open_path): Update callers.
+ * elf/dl-sysdep-open.h: New file.
+ * elf/dl-load.c: Include it.
+ (_dl_map_object): Try _dl_sysdep_open_object before ldconfig cache.
+ * sysdeps/nacl/dl-sysdep.c (_dl_sysdep_open_object): New function.
+ * sysdeps/nacl/dl-sysdep-open.h: New file.
+ * sysdeps/nacl/nacl-interface-list.h: Move nacl_irt_resource_open
+ from libc to rtld.
+
+2015-11-10 H.J. Lu <hongjiu.lu@intel.com>
+
+ [BZ #19178]
+ * sysdeps/x86/Makefile (tests): Add tst-prelink.
+ (tst-prelink-ENV): New.
+ ($(objpfx)tst-prelink-conflict.out): Likewise.
+ ($(objpfx)tst-prelink-cmp.out): Likewise.
+ (tests-special): Add $(objpfx)tst-prelink-cmp.out.
+ * sysdeps/x86/tst-prelink.c: New file.
+ * sysdeps/x86/tst-prelink.exp: Likewise.
+
+2015-11-07 H.J. Lu <hongjiu.lu@intel.com>
+
+ [BZ #19178]
+ * elf/dl-lookup.c (RTYPE_CLASS_VALID): New.
+ (RTYPE_CLASS_PLT): Likewise.
+ (RTYPE_CLASS_COPY): Likewise.
+ (RTYPE_CLASS_TLS): Likewise.
+ (_dl_debug_bindings): Use RTYPE_CLASS_TLS and RTYPE_CLASS_VALID
+ to set relocation type class for DL_DEBUG_PRELINK. Keep only
+ ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY bits for
+ DL_DEBUG_PRELINK.
+
+2015-10-20 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
+
+ [BZ #18743]
+ * sysdeps/powerpc/nptl/elide.h (__elide_lock): Move most of this
+ code to...
+ (ELIDE_LOCK): ...here.
+ (__get_new_count): New function with part of the code from
+ __elide_lock that updates the value of adapt_count after a
+ transaction abort.
+ (__elided_trylock): Moved this code to...
+ (ELIDE_TRYLOCK): ...here.
+
+2015-10-06 Florian Weimer <fweimer@redhat.com>
+
+ [BZ #19018]
+ * stdlib/cxa_thread_atexit_impl.c (__cxa_thread_atexit_impl):
+ Mangle function pointer before storing it.
+ (__call_tls_dtors): Demangle function pointer before calling it.
+
+2015-10-15 Florian Weimer <fweimer@redhat.com>
+
+ [BZ #18928]
+ * sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Remove
+ _dl_pointer_guard member.
+ * elf/rtld.c (_rtld_global_ro): Remove _dl_pointer_guard
+ initializer.
+ (security_init): Always set up pointer guard.
+ (process_envvars): Do not process LD_POINTER_GUARD.
+
+2015-10-09 Carlos O'Donell <carlos@redhat.com>
+
+ [BZ #18589]
+ * string/bug-strcoll2.c: Adjust copyright, and remove contributed by.
+ * string/Makefile ($(objpfx)bug-strcoll2.out): Depend on
+ $(gen-locales).
+
+2015-10-08 Carlos O'Donell <carlos@redhat.com>
+
+ [BZ #18589]
+ * string/Makefile (tests): Add bug-strcoll2.
+ (LOCALES): Add cs_CZ.UTF-8.
+
+2015-09-28 Martin Sebor <msebor@redhat.com>
+
+ [BZ #18969]
+ * string/Makefile (LOCALES): Define.
+ (gen-locales.mk): Include.
+ (test-strcasecmp.out, test-strncasecmp.out, tst-strxfrm.out)
+ (tst-strxfrm2.out): Add deppendency on $(gen-locales).
+ * string/tst-strxfrm2.c (do_test): Print the name of the locale
+ on setlocale failure.
+
+2015-10-08 Carlos O'Donell <carlos@redhat.com>
+
+ [BZ #18589]
+ * string/bug-strcoll2.c: New file.
+ * locale/categories.def: Revert commit
+ f13c2a8dff2329c6692a80176262ceaaf8a6f74e.
+ * locale/langinfo.h: Likewise.
+ * locale/localeinfo.h: Likewise.
+ * locale/C-collate.c: Likewise.
+ * programs/ld-collate.c (collate_output): Likewise.
+ * string/strcoll_l.c (STRDIFF): Likewise.
+ (STRCOLL): Likewise.
+ * wcsmbs/wcscoll_l.c: Likewise.
+
+2015-09-15 Roland McGrath <roland@hack.frob.com>
+
+ * misc/sys/param.h [!MAXHOSTNAMELEN && HOST_NAME_MAX]
+ (MAXHOSTNAMELEN): Define it to HOST_NAME_MAX.
+
+2015-09-11 Roland McGrath <roland@hack.frob.com>
+
+ * sysdeps/nacl/Makefile [$(subdir) = misc] (sysdep_headers):
+ Use 'override' keyword to freeze the value here, preventing
+ the addition of sys/mtio.h by sysdeps/gnu/Makefile.
+
+2015-09-04 Roland McGrath <roland@hack.frob.com>
+
+ [BZ #18921]
+ * sysdeps/posix/opendir.c (need_isdir_precheck) [O_DIRECTORY]:
+ Fix inverted sense of test of 'o_directory_works' value.
+ Reported by Pádraig Brady <P@draigBrady.com>, diagnosed by
+ Bernhard Voelker <mail@bernhard-voelker.de>.
+
+2015-08-31 Brett Neumeier <brett@neumeier.us>
+
+ [BZ #18870]
+ * sysdeps/sparc/sparc32/sem_open.c: Add missing #include
+
+2015-08-28 Mike Frysinger <vapier@gentoo.org>
+
+ [BZ #18887]
+ * misc/Makefile (tests): Add tst-mntent-blank-corrupt and
+ tst-mntent-blank-passno.
+ * misc/mntent_r.c (__getmntent_r): Do not read past buffer[0].
+ * misc/tst-mntent-blank-corrupt.c: New test.
+ * misc/tst-mntent-blank-passno.c: New test ripped from ...
+ * misc/tst-mntent.c (do_test): ... here.
+
+2015-08-25 Roland McGrath <roland@hack.frob.com>
+
+ * sysdeps/nacl/start.c (_start): Call __nacl_main instead of main
+ if the weak reference is not null.
+
+2015-08-19 Andrew Senkevich <andrew.senkevich@intel.com>
+
+ [BZ #18796]
+ * scripts/test-installation.pl: Don't add -lmvec to build options
+ if libmvec wasn't built.
+ * NEWS: Mention this fix.
+
+2015-08-10 Maxim Ostapenko <m.ostapenko@partner.samsung.com>
+
+ [BZ #18778]
+ * elf/Makefile (tests): Add Add tst-nodelete2.
+ (modules-names): Add tst-nodelete2mod.
+ (tst-nodelete2mod.so-no-z-defs): New.
+ ($(objpfx)tst-nodelete2): Likewise.
+ ($(objpfx)tst-nodelete2.out): Likewise.
+ (LDFLAGS-tst-nodelete2): Likewise.
+ * elf/dl-close.c (_dl_close_worker): Move DF_1_NODELETE clearing
+ out of loop through all loaded libraries.
+ * elf/tst-nodelete2.c: New file.
+ * elf/tst-nodelete2mod.c: Likewise.
+
+2015-08-10 Andreas Schwab <schwab@suse.de>
+
+ [BZ #18781]
+ * sysdeps/unix/sysv/linux/openat.c (__OPENAT) [MORE_OFLAGS]: Add
+ MORE_OFLAGS to oflag.
+ * io/test-lfs.c (do_test): Test openat64.
+
+2015-08-08 John David Anglin <danglin@gcc.gnu.org>
+
+ [BZ #18787]
+ * sysdeps/unix/sysv/linux/hppa/bits/atomic.h (_LWS_CLOBBER): Revise
+ clobber registers.
+ (atomic_compare_and_exchange_val_acq): Use register asms to assign
+ operand registers. Use register %r20 for EAGAIN and EDEADLOCK checks.
+ Cast return to __typeof (oldval).
+
+2015-08-08 Mike Frysinger <vapier@gentoo.org>
+
+ * sysdeps/unix/sysv/linux/microblaze/sysdep.h: Wrap the whole file
+ in _LINUX_MICROBLAZE_SYSDEP_H defines. Include sysdeps/unix/sysdep.h
+ and delete sys/syscall.h include.
+
+2015-08-07 Mike Frysinger <vapier@gentoo.org>
+
+ * sysdeps/hppa/dl-symaddr.c (_dl_symbol_address): Add rtld_hidden_def.
+
+2015-08-05 Zack Weinberg <zackw@panix.com>
+
+ * misc/regexp.h: Update comments.
+
2015-08-05 Carlos O'Donell <carlos@systemhalted.org>
* version.h (RELEASE): Set to "stable".
diff --git a/NEWS b/NEWS
index 4c31de7..7c4fbc6 100644
--- a/NEWS
+++ b/NEWS
@@ -5,6 +5,16 @@ See the end for copying conditions.
Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
using `glibc' in the "product" field.
+Version 2.22.1
+
+* The following bugs are resolved with this release:
+
+ 17905, 18420, 18421, 18480, 18589, 18743, 18778, 18781, 18787, 18796,
+ 18870, 18887, 18921, 18928, 18969, 18985, 19018, 19174, 19178.
+
+* The LD_POINTER_GUARD environment variable can no longer be used to
+ disable the pointer guard feature. It is always enabled.
+
Version 2.22
* The following bugs are resolved with this release:
@@ -84,7 +94,7 @@ Version 2.22
release. Use of this header will trigger a deprecation warning.
Application developers should update their code to use <regex.h> instead.
- This header was formerly part of SUSv2, but was deprecated in 1997 and
+ This header was formerly part of SUS, but was deprecated in 1994 and
removed from the standard in 2001. Also, the glibc implementation
leaks memory. See BZ#18681 for more details.
diff --git a/catgets/Makefile b/catgets/Makefile
index 4624a88..56de38b 100644
--- a/catgets/Makefile
+++ b/catgets/Makefile
@@ -34,6 +34,7 @@ test-srcs = test-gencat
ifeq ($(run-built-tests),yes)
tests-special += $(objpfx)de/libc.cat $(objpfx)test1.cat $(objpfx)test2.cat \
$(objpfx)sample.SJIS.cat $(objpfx)test-gencat.out
+tests-special += $(objpfx)tst-catgets-mem.out
endif
gencat-modules = xmalloc
@@ -50,9 +51,11 @@ catgets-CPPFLAGS := -DNLSPATH='"$(msgcatdir)/%L/%N:$(msgcatdir)/%L/LC_MESSAGES/%
generated += de.msg test1.cat test1.h test2.cat test2.h sample.SJIS.cat \
test-gencat.h
+generated += tst-catgets.mtrace tst-catgets-mem.out
+
generated-dirs += de
-tst-catgets-ENV = NLSPATH="$(objpfx)%l/%N.cat" LANG=de
+tst-catgets-ENV = NLSPATH="$(objpfx)%l/%N.cat" LANG=de MALLOC_TRACE=$(objpfx)tst-catgets.mtrace
ifeq ($(run-built-tests),yes)
# This test just checks whether the program produces any error or not.
@@ -86,4 +89,8 @@ $(objpfx)test-gencat.out: test-gencat.sh $(objpfx)test-gencat \
$(objpfx)sample.SJIS.cat: sample.SJIS $(objpfx)gencat
$(built-program-cmd) -H $(objpfx)test-gencat.h < $(word 1,$^) > $@; \
$(evaluate-test)
+
+$(objpfx)tst-catgets-mem.out: $(objpfx)tst-catgets.out
+ $(common-objpfx)malloc/mtrace $(objpfx)tst-catgets.mtrace > $@; \
+ $(evaluate-test)
endif
diff --git a/catgets/catgets.c b/catgets/catgets.c
index cf93d56..4be452d 100644
--- a/catgets/catgets.c
+++ b/catgets/catgets.c
@@ -16,7 +16,6 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <alloca.h>
#include <errno.h>
#include <locale.h>
#include <nl_types.h>
@@ -35,6 +34,7 @@ catopen (const char *cat_name, int flag)
__nl_catd result;
const char *env_var = NULL;
const char *nlspath = NULL;
+ char *tmp = NULL;
if (strchr (cat_name, '/') == NULL)
{
@@ -54,7 +54,10 @@ catopen (const char *cat_name, int flag)
{
/* Append the system dependent directory. */
size_t len = strlen (nlspath) + 1 + sizeof NLSPATH;
- char *tmp = alloca (len);
+ tmp = malloc (len);
+
+ if (__glibc_unlikely (tmp == NULL))
+ return (nl_catd) -1;
__stpcpy (__stpcpy (__stpcpy (tmp, nlspath), ":"), NLSPATH);
nlspath = tmp;
@@ -65,16 +68,18 @@ catopen (const char *cat_name, int flag)
result = (__nl_catd) malloc (sizeof (*result));
if (result == NULL)
- /* We cannot get enough memory. */
- return (nl_catd) -1;
-
- if (__open_catalog (cat_name, nlspath, env_var, result) != 0)
+ {
+ /* We cannot get enough memory. */
+ result = (nl_catd) -1;
+ }
+ else if (__open_catalog (cat_name, nlspath, env_var, result) != 0)
{
/* Couldn't open the file. */
free ((void *) result);
- return (nl_catd) -1;
+ result = (nl_catd) -1;
}
+ free (tmp);
return (nl_catd) result;
}
diff --git a/catgets/open_catalog.c b/catgets/open_catalog.c
index e069416..9f4d776 100644
--- a/catgets/open_catalog.c
+++ b/catgets/open_catalog.c
@@ -47,6 +47,7 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var,
size_t tab_size;
const char *lastp;
int result = -1;
+ char *buf = NULL;
if (strchr (cat_name, '/') != NULL || nlspath == NULL)
fd = open_not_cancel_2 (cat_name, O_RDONLY);
@@ -57,23 +58,23 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var,
if (__glibc_unlikely (bufact + (n) >= bufmax)) \
{ \
char *old_buf = buf; \
- bufmax += 256 + (n); \
- buf = (char *) alloca (bufmax); \
- memcpy (buf, old_buf, bufact); \
+ bufmax += (bufmax < 256 + (n)) ? 256 + (n) : bufmax; \
+ buf = realloc (buf, bufmax); \
+ if (__glibc_unlikely (buf == NULL)) \
+ { \
+ free (old_buf); \
+ return -1; \
+ } \
}
/* The RUN_NLSPATH variable contains a colon separated list of
descriptions where we expect to find catalogs. We have to
recognize certain % substitutions and stop when we found the
first existing file. */
- char *buf;
size_t bufact;
- size_t bufmax;
+ size_t bufmax = 0;
size_t len;
- buf = NULL;
- bufmax = 0;
-
fd = -1;
while (*run_nlspath != '\0')
{
@@ -188,7 +189,10 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var,
/* Avoid dealing with directories and block devices */
if (__builtin_expect (fd, 0) < 0)
- return -1;
+ {
+ free (buf);
+ return -1;
+ }
if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) < 0)
goto close_unlock_return;
@@ -325,6 +329,7 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var,
/* Release the lock again. */
close_unlock_return:
close_not_cancel_no_status (fd);
+ free (buf);
return result;
}
diff --git a/catgets/tst-catgets.c b/catgets/tst-catgets.c
index a0a4089..0886938 100644
--- a/catgets/tst-catgets.c
+++ b/catgets/tst-catgets.c
@@ -1,7 +1,10 @@
+#include <assert.h>
#include <mcheck.h>
#include <nl_types.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
+#include <sys/resource.h>
static const char *msgs[] =
@@ -12,6 +15,33 @@ static const char *msgs[] =
};
#define nmsgs (sizeof (msgs) / sizeof (msgs[0]))
+
+/* Test for unbounded alloca. */
+static int
+do_bz17905 (void)
+{
+ char *buf;
+ struct rlimit rl;
+ nl_catd result;
+
+ const int sz = 1024 * 1024;
+
+ getrlimit (RLIMIT_STACK, &rl);
+ rl.rlim_cur = sz;
+ setrlimit (RLIMIT_STACK, &rl);
+
+ buf = malloc (sz + 1);
+ memset (buf, 'A', sz);
+ buf[sz] = '\0';
+ setenv ("NLSPATH", buf, 1);
+
+ result = catopen (buf, NL_CAT_LOCALE);
+ assert (result == (nl_catd) -1);
+
+ free (buf);
+ return 0;
+}
+
#define ROUNDS 5
static int
@@ -62,6 +92,7 @@ do_test (void)
}
}
+ result += do_bz17905 ();
return result;
}
diff --git a/config.make.in b/config.make.in
index a9f5696..46cd9bb 100644
--- a/config.make.in
+++ b/config.make.in
@@ -51,6 +51,7 @@ have-z-combreloc = @libc_cv_z_combreloc@
have-z-execstack = @libc_cv_z_execstack@
have-Bgroup = @libc_cv_Bgroup@
have-protected-data = @libc_cv_protected_data@
+have-glob-dat-reloc = @libc_cv_has_glob_dat@
with-fp = @with_fp@
old-glibc-headers = @old_glibc_headers@
unwind-find-fde = @libc_cv_gcc_unwind_find_fde@
diff --git a/configure b/configure
index 45cc7cb..4f87b31 100755
--- a/configure
+++ b/configure
@@ -628,6 +628,7 @@ gnu89_inline
libc_cv_ssp
fno_unit_at_a_time
libc_cv_output_format
+libc_cv_has_glob_dat
libc_cv_hashstyle
libc_cv_fpie
libc_cv_z_execstack
@@ -6335,6 +6336,39 @@ $as_echo "$libc_cv_use_default_link" >&6; }
use_default_link=$libc_cv_use_default_link
fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GLOB_DAT reloc" >&5
+$as_echo_n "checking for GLOB_DAT reloc... " >&6; }
+if ${libc_cv_has_glob_dat+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.c <<EOF
+extern int mumble;
+int foo (void) { return mumble; }
+EOF
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+ -fPIC -shared -o conftest.so conftest.c
+ -nostdlib -nostartfiles
+ 1>&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+then
+ if $READELF -rW conftest.so | grep '_GLOB_DAT' > /dev/null; then
+ libc_cv_has_glob_dat=yes
+ else
+ libc_cv_has_glob_dat=no
+ fi
+else
+ libc_cv_has_glob_dat=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_has_glob_dat" >&5
+$as_echo "$libc_cv_has_glob_dat" >&6; }
+
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker output format" >&5
$as_echo_n "checking linker output format... " >&6; }
if ${libc_cv_output_format+:} false; then :
diff --git a/configure.ac b/configure.ac
index 7e9383a..8be612d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1535,6 +1535,29 @@ $ac_try"
use_default_link=$libc_cv_use_default_link
fi
+AC_CACHE_CHECK(for GLOB_DAT reloc,
+ libc_cv_has_glob_dat, [dnl
+cat > conftest.c <<EOF
+extern int mumble;
+int foo (void) { return mumble; }
+EOF
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+ -fPIC -shared -o conftest.so conftest.c
+ -nostdlib -nostartfiles
+ 1>&AS_MESSAGE_LOG_FD])
+then
+dnl look for GLOB_DAT relocation.
+ if $READELF -rW conftest.so | grep '_GLOB_DAT' > /dev/null; then
+ libc_cv_has_glob_dat=yes
+ else
+ libc_cv_has_glob_dat=no
+ fi
+else
+ libc_cv_has_glob_dat=no
+fi
+rm -f conftest*])
+AC_SUBST(libc_cv_has_glob_dat)
+
AC_CACHE_CHECK(linker output format, libc_cv_output_format, [dnl
if libc_cv_output_format=`
${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&AS_MESSAGE_LOG_FD`
diff --git a/elf/Makefile b/elf/Makefile
index 4ceeaf8..a2c43bc 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -148,7 +148,8 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
tst-unique1 tst-unique2 $(if $(CXX),tst-unique3 tst-unique4 \
tst-nodelete) \
tst-initorder tst-initorder2 tst-relsort1 tst-null-argv \
- tst-ptrguard1 tst-tlsalign tst-tlsalign-extern tst-nodelete-opened
+ tst-ptrguard1 tst-tlsalign tst-tlsalign-extern tst-nodelete-opened \
+ tst-nodelete2
# reldep9
ifeq ($(build-hardcoded-path-in-tests),yes)
tests += tst-dlopen-aout
@@ -218,7 +219,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
tst-initorder2d \
tst-relsort1mod1 tst-relsort1mod2 tst-array2dep \
tst-array5dep tst-null-argv-lib \
- tst-tlsalign-lib tst-nodelete-opened-lib
+ tst-tlsalign-lib tst-nodelete-opened-lib tst-nodelete2mod
ifeq (yes,$(have-protected-data))
modules-names += tst-protected1moda tst-protected1modb
tests += tst-protected1a tst-protected1b
@@ -292,6 +293,13 @@ check-abi: $(objpfx)check-abi-ld.out
tests-special += $(objpfx)check-abi-ld.out
update-abi: update-abi-ld
+ifeq ($(have-glob-dat-reloc),yes)
+tests += tst-prelink
+ifeq ($(run-built-tests),yes)
+tests-special += $(objpfx)tst-prelink-cmp.out
+endif
+endif
+
include ../Rules
ifeq (yes,$(build-shared))
@@ -594,6 +602,7 @@ tst-auditmod9b.so-no-z-defs = yes
tst-nodelete-uniquemod.so-no-z-defs = yes
tst-nodelete-rtldmod.so-no-z-defs = yes
tst-nodelete-zmod.so-no-z-defs = yes
+tst-nodelete2mod.so-no-z-defs = yes
ifeq ($(build-shared),yes)
# Build all the modules even when not actually running test programs.
@@ -1164,6 +1173,11 @@ $(objpfx)tst-nodelete.out: $(objpfx)tst-nodelete-uniquemod.so \
LDFLAGS-tst-nodelete = -rdynamic
LDFLAGS-tst-nodelete-zmod.so = -Wl,--enable-new-dtags,-z,nodelete
+$(objpfx)tst-nodelete2: $(libdl)
+$(objpfx)tst-nodelete2.out: $(objpfx)tst-nodelete2mod.so
+
+LDFLAGS-tst-nodelete2 = -rdynamic
+
$(objpfx)tst-initorder-cmp.out: tst-initorder.exp $(objpfx)tst-initorder.out
cmp $^ > $@; \
$(evaluate-test)
@@ -1205,3 +1219,13 @@ $(objpfx)tst-unused-dep.out: $(objpfx)testobj1.so
$(objpfx)tst-unused-dep-cmp.out: $(objpfx)tst-unused-dep.out
cmp $< /dev/null > $@; \
$(evaluate-test)
+
+tst-prelink-ENV = LD_TRACE_PRELINKING=1
+
+$(objpfx)tst-prelink-conflict.out: $(objpfx)tst-prelink.out
+ grep stdout $< | grep conflict | $(AWK) '{ print $$10, $$11 }' > $@
+
+$(objpfx)tst-prelink-cmp.out: tst-prelink.exp \
+ $(objpfx)tst-prelink-conflict.out
+ cmp $^ > $@; \
+ $(evaluate-test)
diff --git a/elf/dl-close.c b/elf/dl-close.c
index 9105277..c897247 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -144,6 +144,14 @@ _dl_close_worker (struct link_map *map, bool force)
char done[nloaded];
struct link_map *maps[nloaded];
+ /* Clear DF_1_NODELETE to force object deletion. We don't need to touch
+ l_tls_dtor_count because forced object deletion only happens when an
+ error occurs during object load. Destructor registration for TLS
+ non-POD objects should not have happened till then for this
+ object. */
+ if (force)
+ map->l_flags_1 &= ~DF_1_NODELETE;
+
/* Run over the list and assign indexes to the link maps and enter
them into the MAPS array. */
int idx = 0;
@@ -153,13 +161,6 @@ _dl_close_worker (struct link_map *map, bool force)
maps[idx] = l;
++idx;
- /* Clear DF_1_NODELETE to force object deletion. We don't need to touch
- l_tls_dtor_count because forced object deletion only happens when an
- error occurs during object load. Destructor registration for TLS
- non-POD objects should not have happened till then for this
- object. */
- if (force)
- l->l_flags_1 &= ~DF_1_NODELETE;
}
assert (idx == nloaded);
diff --git a/elf/dl-load.c b/elf/dl-load.c
index 0c052e4..7e6f4c5 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -42,6 +42,7 @@
#include <dl-map-segments.h>
#include <dl-unmap-segments.h>
#include <dl-machine-reject-phdr.h>
+#include <dl-sysdep-open.h>
#include <endian.h>
@@ -1471,9 +1472,13 @@ print_search_path (struct r_search_path_elem **list,
ignore only ELF files for other architectures. Non-ELF files and
ELF files with different header information cause fatal errors since
this could mean there is something wrong in the installation and the
- user might want to know about this. */
+ user might want to know about this.
+
+ If FD is not -1, then the file is already open and FD refers to it.
+ In that case, FD is consumed for both successful and error returns. */
static int
-open_verify (const char *name, struct filebuf *fbp, struct link_map *loader,
+open_verify (const char *name, int fd,
+ struct filebuf *fbp, struct link_map *loader,
int whatcode, int mode, bool *found_other_class, bool free_name)
{
/* This is the expected ELF header. */
@@ -1514,6 +1519,7 @@ open_verify (const char *name, struct filebuf *fbp, struct link_map *loader,
if (__glibc_unlikely (GLRO(dl_naudit) > 0) && whatcode != 0
&& loader->l_auditing == 0)
{
+ const char *original_name = name;
struct audit_ifaces *afct = GLRO(dl_audit);
for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
{
@@ -1528,11 +1534,21 @@ open_verify (const char *name, struct filebuf *fbp, struct link_map *loader,
afct = afct->next;
}
+
+ if (fd != -1 && name != original_name && strcmp (name, original_name))
+ {
+ /* An audit library changed what we're supposed to open,
+ so FD no longer matches it. */
+ __close (fd);
+ fd = -1;
+ }
}
#endif
- /* Open the file. We always open files read-only. */
- int fd = __open (name, O_RDONLY | O_CLOEXEC);
+ if (fd == -1)
+ /* Open the file. We always open files read-only. */
+ fd = __open (name, O_RDONLY | O_CLOEXEC);
+
if (fd != -1)
{
ElfW(Ehdr) *ehdr;
@@ -1801,7 +1817,7 @@ open_path (const char *name, size_t namelen, int mode,
if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_LIBS))
_dl_debug_printf (" trying file=%s\n", buf);
- fd = open_verify (buf, fbp, loader, whatcode, mode,
+ fd = open_verify (buf, -1, fbp, loader, whatcode, mode,
found_other_class, false);
if (this_dir->status[cnt] == unknown)
{
@@ -2041,6 +2057,20 @@ _dl_map_object (struct link_map *loader, const char *name,
&loader->l_runpath_dirs, &realname, &fb, loader,
LA_SER_RUNPATH, &found_other_class);
+ if (fd == -1)
+ {
+ realname = _dl_sysdep_open_object (name, namelen, &fd);
+ if (realname != NULL)
+ {
+ fd = open_verify (realname, fd,
+ &fb, loader ?: GL(dl_ns)[nsid]._ns_loaded,
+ LA_SER_CONFIG, mode, &found_other_class,
+ false);
+ if (fd == -1)
+ free (realname);
+ }
+ }
+
#ifdef USE_LDCONFIG
if (fd == -1
&& (__glibc_likely ((mode & __RTLD_SECURE) == 0)
@@ -2086,7 +2116,7 @@ _dl_map_object (struct link_map *loader, const char *name,
if (cached != NULL)
{
- fd = open_verify (cached,
+ fd = open_verify (cached, -1,
&fb, loader ?: GL(dl_ns)[nsid]._ns_loaded,
LA_SER_CONFIG, mode, &found_other_class,
false);
@@ -2121,7 +2151,7 @@ _dl_map_object (struct link_map *loader, const char *name,
fd = -1;
else
{
- fd = open_verify (realname, &fb,
+ fd = open_verify (realname, -1, &fb,
loader ?: GL(dl_ns)[nsid]._ns_loaded, 0, mode,
&found_other_class, true);
if (__glibc_unlikely (fd == -1))
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index 11cb44b..acf5280 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -1016,6 +1016,18 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map,
#ifdef SHARED
if (GLRO(dl_debug_mask) & DL_DEBUG_PRELINK)
{
+/* ELF_RTYPE_CLASS_XXX must match RTYPE_CLASS_XXX used by prelink with
+ LD_TRACE_PRELINKING. */
+#define RTYPE_CLASS_VALID 8
+#define RTYPE_CLASS_PLT (8|1)
+#define RTYPE_CLASS_COPY (8|2)
+#define RTYPE_CLASS_TLS (8|4)
+#if ELF_RTYPE_CLASS_PLT != 0 && ELF_RTYPE_CLASS_PLT != 1
+# error ELF_RTYPE_CLASS_PLT must be 0 or 1!
+#endif
+#if ELF_RTYPE_CLASS_COPY != 0 && ELF_RTYPE_CLASS_COPY != 2
+# error ELF_RTYPE_CLASS_COPY must be 0 or 2!
+#endif
int conflict = 0;
struct sym_val val = { NULL, NULL };
@@ -1071,12 +1083,17 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map,
if (value->s)
{
+ /* Keep only ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY
+ bits since since prelink only uses them. */
+ type_class &= ELF_RTYPE_CLASS_PLT | ELF_RTYPE_CLASS_COPY;
if (__glibc_unlikely (ELFW(ST_TYPE) (value->s->st_info)
== STT_TLS))
- type_class = 4;
+ /* Clear the RTYPE_CLASS_VALID bit in RTYPE_CLASS_TLS. */
+ type_class = RTYPE_CLASS_TLS & ~RTYPE_CLASS_VALID;
else if (__glibc_unlikely (ELFW(ST_TYPE) (value->s->st_info)
== STT_GNU_IFUNC))
- type_class |= 8;
+ /* Set the RTYPE_CLASS_VALID bit. */
+ type_class |= RTYPE_CLASS_VALID;
}
if (conflict
diff --git a/elf/dl-sysdep-open.h b/elf/dl-sysdep-open.h
new file mode 100644
index 0000000..a63d9f5
--- /dev/null
+++ b/elf/dl-sysdep-open.h
@@ -0,0 +1,45 @@
+/* System-specific call to open a shared object by name. Stub version.
+ Copyright (C) 2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _DL_SYSDEP_OPEN_H
+#define _DL_SYSDEP_OPEN_H 1
+
+#include <assert.h>
+#include <stddef.h>
+
+/* NAME is a name without slashes, as it appears in a DT_NEEDED entry
+ or a dlopen call's argument or suchlike. NAMELEN is (strlen (NAME) + 1).
+
+ Find NAME in an OS-dependent fashion, and return its "real" name.
+ Optionally fill in *FD with a file descriptor open on that file (or
+ else leave its initial value of -1). The return value is a new
+ malloc'd string, which will be free'd by the caller. If NAME is
+ resolved to an actual file that can be opened, then the return
+ value should name that file (and if *FD was not set, then a normal
+ __open call on that string will be made). If *FD was set by some
+ other means than a normal open and there is no "real" name to use,
+ then __strdup (NAME) is fine (modulo error checking). */
+
+static inline char *
+_dl_sysdep_open_object (const char *name, size_t namelen, int *fd)
+{
+ assert (*fd == -1);
+ return NULL;
+}
+
+#endif /* dl-sysdep-open.h */
diff --git a/elf/rtld.c b/elf/rtld.c
index 69873c2..07e741c 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -162,7 +162,6 @@ struct rtld_global_ro _rtld_global_ro attribute_relro =
._dl_hwcap_mask = HWCAP_IMPORTANT,
._dl_lazy = 1,
._dl_fpu_control = _FPU_DEFAULT,
- ._dl_pointer_guard = 1,
._dl_pagesize = EXEC_PAGESIZE,
._dl_inhibit_cache = 0,
@@ -709,15 +708,12 @@ security_init (void)
#endif
/* Set up the pointer guard as well, if necessary. */
- if (GLRO(dl_pointer_guard))
- {
- uintptr_t pointer_chk_guard = _dl_setup_pointer_guard (_dl_random,
- stack_chk_guard);
+ uintptr_t pointer_chk_guard
+ = _dl_setup_pointer_guard (_dl_random, stack_chk_guard);
#ifdef THREAD_SET_POINTER_GUARD
- THREAD_SET_POINTER_GUARD (pointer_chk_guard);
+ THREAD_SET_POINTER_GUARD (pointer_chk_guard);
#endif
- __pointer_chk_guard_local = pointer_chk_guard;
- }
+ __pointer_chk_guard_local = pointer_chk_guard;
/* We do not need the _dl_random value anymore. The less
information we leave behind, the better, so clear the
@@ -2471,9 +2467,6 @@ process_envvars (enum mode *modep)
GLRO(dl_use_load_bias) = envline[14] == '1' ? -1 : 0;
break;
}
-
- if (memcmp (envline, "POINTER_GUARD", 13) == 0)
- GLRO(dl_pointer_guard) = envline[14] != '0';
break;
case 14:
diff --git a/elf/tst-nodelete2.c b/elf/tst-nodelete2.c
new file mode 100644
index 0000000..388e8af
--- /dev/null
+++ b/elf/tst-nodelete2.c
@@ -0,0 +1,37 @@
+#include "../dlfcn/dlfcn.h"
+#include <stdio.h>