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grub-mkconfig
executable file
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grub-mkconfig
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#! /bin/sh
set -e
# Generate grub.cfg by inspecting /boot contents.
# Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.
#
# GRUB 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 3 of the License, or
# (at your option) any later version.
#
# GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
transform="s,x,x,"
prefix=/usr
exec_prefix=${prefix}
sbindir=${exec_prefix}/sbin
bindir=${exec_prefix}/bin
libdir=${exec_prefix}/lib
sysconfdir=/etc
PACKAGE_NAME=GRUB
PACKAGE_VERSION=1.99
host_os=linux-gnu
datarootdir=${prefix}/share
datadir=${datarootdir}
pkgdatadir=${datadir}/`echo grub | sed "${transform}"`
grub_cfg=""
grub_mkconfig_dir=${sysconfdir}/grub.d
self=`basename $0`
grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed "${transform}"`
grub_probe=${sbindir}/`echo grub-probe | sed "${transform}"`
grub_script_check="${bindir}/`echo grub-script-check | sed "${transform}"`"
GRUB_PREFIX=`echo '/boot/grub' | sed "s,//*,/,g"`
# Usage: usage
# Print the usage.
usage () {
cat <<EOF
Usage: $self [OPTION]
Generate a grub config file
-o, --output=FILE output generated config to FILE [default=stdout]
-h, --help print this message and exit
-v, --version print the version information and exit
-r, --root=PATH filesystem root
Report bugs to <bug-grub@gnu.org>.
EOF
}
argument () {
opt=$1
shift
if test $# -eq 0; then
echo "$0: option requires an argument -- '$opt'" 1>&2
exit 1
fi
echo $1
}
# Check the arguments.
while test $# -gt 0
do
option=$1
shift
case "$option" in
-h | --help)
usage
exit 0 ;;
-v | --version)
echo "$self (${PACKAGE_NAME}) ${PACKAGE_VERSION}"
exit 0 ;;
-o | --output)
grub_cfg=`argument $option "$@"`; shift;;
--output=*)
grub_cfg=`echo "$option" | sed 's/--output=//'`
;;
-r | --root)
fs_root=`argument $option "$@"`; shift;;
--root=*)
fs_root=`echo "$option" | sed 's/--root=//'`
;;
-*)
echo "Unrecognized option \`$option'" 1>&2
usage
exit 1
;;
# Explicitly ignore non-option arguments, for compatibility.
esac
done
. ${libdir}/grub/grub-mkconfig_lib
if [ "x$EUID" = "x" ] ; then
EUID=`id -u`
fi
if [ "$EUID" != 0 ] ; then
root=f
case "`uname 2>/dev/null`" in
CYGWIN*)
# Cygwin: Assume root if member of admin group
for g in `id -G 2>/dev/null` ; do
case $g in
0|544) root=t ;;
esac
done ;;
esac
if [ $root != t ] ; then
echo "$self: You must run this as root" >&2
exit 1
fi
fi
set $grub_mkdevicemap dummy
if test -f "$1"; then
:
else
echo "$1: Not found." 1>&2
exit 1
fi
set $grub_probe dummy
if test -f "$1"; then
:
else
echo "$1: Not found." 1>&2
exit 1
fi
mkdir -p ${GRUB_PREFIX}
if test -e ${GRUB_PREFIX}/device.map ; then : ; else
${grub_mkdevicemap}
fi
# Device containing our userland. Typically used for root= parameter.
GRUB_DEVICE="`${grub_probe} --target=device ${fs_root}/`"
GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true
# Device containing our /boot partition. Usually the same as GRUB_DEVICE.
GRUB_DEVICE_BOOT="`${grub_probe} --target=device ${fs_root}/boot`"
GRUB_DEVICE_BOOT_UUID="`${grub_probe} --device ${GRUB_DEVICE_BOOT} --target=fs_uuid 2> /dev/null`" || true
# Filesystem for the device containing our userland. Used for stuff like
# choosing Hurd filesystem module.
GRUB_FS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2> /dev/null || echo unknown`"
if test -f ${sysconfdir}/default/grub ; then
. ${sysconfdir}/default/grub
fi
# XXX: should this be deprecated at some point?
if [ "x${GRUB_TERMINAL}" != "x" ] ; then
GRUB_TERMINAL_INPUT="${GRUB_TERMINAL}"
GRUB_TERMINAL_OUTPUT="${GRUB_TERMINAL}"
fi
termoutdefault=0
if [ "x${GRUB_TERMINAL_OUTPUT}" = "x" ]; then
GRUB_TERMINAL_OUTPUT=gfxterm;
termoutdefault=1;
fi
for x in ${GRUB_TERMINAL_OUTPUT}; do
if [ "x${x}" = "xgfxterm" ]; then
if [ -n "$GRUB_FONT" ] ; then
if is_path_readable_by_grub ${GRUB_FONT} > /dev/null ; then
GRUB_FONT_PATH=${GRUB_FONT}
else
echo "No such font or not readable by grub: ${GRUB_FONT}" >&2
exit 1
fi
else
for dir in ${pkgdatadir} ${GRUB_PREFIX} /usr/share/grub ; do
for basename in unicode unifont ascii; do
path="${dir}/${basename}.pf2"
if is_path_readable_by_grub ${path} > /dev/null ; then
GRUB_FONT_PATH=${path}
else
continue
fi
if [ "${basename}" = "ascii" ] ; then
# make sure all our children behave in conformance with ascii..
export LANG=C
fi
break 2
done
done
fi
if [ -z "${GRUB_FONT_PATH}" ] ; then
if [ "x$termoutdefault" != "x1" ]; then
echo "No font for gfxterm found." >&2 ; exit 1
fi
GRUB_TERMINAL_OUTPUT=
fi
fi
done
for x in ${GRUB_TERMINAL_OUTPUT}; do
case "x${x}" in
xgfxterm) ;;
xconsole | xserial | xofconsole)
# make sure all our children behave in conformance with ascii..
export LANG=C;;
*) echo "Invalid output terminal \"${GRUB_TERMINAL_OUTPUT}\"" >&2 ; exit 1 ;;
esac
done
# These are defined in this script, export them here so that user can
# override them.
export GRUB_DEVICE \
GRUB_DEVICE_UUID \
GRUB_DEVICE_BOOT \
GRUB_DEVICE_BOOT_UUID \
GRUB_FS \
GRUB_FONT_PATH \
GRUB_PRELOAD_MODULES \
GRUB_PREFIX
# These are optional, user-defined variables.
export GRUB_DEFAULT \
GRUB_HIDDEN_TIMEOUT \
GRUB_HIDDEN_TIMEOUT_QUIET \
GRUB_TIMEOUT \
GRUB_DEFAULT_BUTTON \
GRUB_HIDDEN_TIMEOUT_BUTTON \
GRUB_TIMEOUT_BUTTON \
GRUB_BUTTON_CMOS_ADDRESS \
GRUB_BUTTON_CMOS_CLEAN \
GRUB_DISTRIBUTOR \
GRUB_CMDLINE_LINUX \
GRUB_CMDLINE_LINUX_DEFAULT \
GRUB_CMDLINE_XEN \
GRUB_CMDLINE_XEN_DEFAULT \
GRUB_CMDLINE_NETBSD \
GRUB_CMDLINE_NETBSD_DEFAULT \
GRUB_TERMINAL_INPUT \
GRUB_TERMINAL_OUTPUT \
GRUB_SERIAL_COMMAND \
GRUB_DISABLE_LINUX_UUID \
GRUB_DISABLE_RECOVERY \
GRUB_VIDEO_BACKEND \
GRUB_GFXMODE \
GRUB_BACKGROUND \
GRUB_THEME \
GRUB_GFXPAYLOAD_LINUX \
GRUB_DISABLE_OS_PROBER \
GRUB_INIT_TUNE \
GRUB_SAVEDEFAULT \
GRUB_BADRAM
if test "x${grub_cfg}" != "x"; then
rm -f ${grub_cfg}.new
exec > ${grub_cfg}.new
# Allow this to fail, since /boot/grub/ might need to be fatfs to support some
# firmware implementations (e.g. OFW or EFI).
chmod 400 ${grub_cfg}.new || grub_warn "Could not make ${grub_cfg}.new readable by only root.\
This means that if the generated config contains a password it is readable by everyone"
fi
echo "Generating grub.cfg ..." >&2
cat << EOF
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by $self using templates
# from ${grub_mkconfig_dir} and settings from ${sysconfdir}/default/grub
#
EOF
for i in ${grub_mkconfig_dir}/* ; do
case "$i" in
# emacsen backup files. FIXME: support other editors
*~) ;;
# emacsen autosave files. FIXME: support other editors
\#*\#) ;;
*)
if grub_file_is_not_garbage "$i" && test -x "$i" ; then
echo
echo "### BEGIN $i ###"
"$i" ${fs_root}
echo "### END $i ###"
fi
;;
esac
done
if test "x${grub_cfg}" != "x" ; then
if ! ${grub_script_check} ${grub_cfg}.new; then
echo "Syntax errors are detected in generated GRUB config file." >&2
echo "Ensure that there are no errors in /etc/default/grub" >&2
echo "and /etc/grub.d/* files or please file a bug report with" >&2
echo "${grub_cfg}.new file attached." >&2
else
# none of the children aborted with error, install the new grub.cfg
mv -f ${grub_cfg}.new ${grub_cfg}
fi
fi
echo "done" >&2