grub/util/update-grub.in

161 lines
4.1 KiB
Bash

#! /bin/sh -e
# Generate grub.cfg by inspecting /boot contents.
# Copyright (C) 2006,2007 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="@program_transform_name@"
prefix=@prefix@
exec_prefix=@exec_prefix@
sbindir=@sbindir@
libdir=@libdir@
sysconfdir=@sysconfdir@
grub_prefix=`echo /boot/grub | sed ${transform}`
grub_cfg=${grub_prefix}/grub.cfg
update_grub_dir=${sysconfdir}/grub.d
platform=@platform@
grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed ${transform}`
grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
# for convert_system_path_to_grub_path(), font_path()
. ${libdir}/grub/update-grub_lib
if [ "x$UID" = "x" ] ; then
UID=`id -u`
fi
if [ "$UID" != 0 ] ; then
echo "$0: You must run this as root" >&2
exit 1
fi
if [ "$1" = "-y" ] ; then
echo "$0: warning: Ignoring -y option (no longer needed)." >&2
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 /`"
# Filesystem for the device containing our userland. Used for stuff like
# choosing Hurd filesystem module.
GRUB_FS="`grub-probe --target=fs / 2> /dev/null || echo unknown`"
# GRUB path to /. Only used for "set root=". Not critical.
GRUB_DRIVE="`grub-probe --target=drive /`" || true
# GRUB path to /boot
GRUB_DRIVE_BOOT="`convert_system_path_to_grub_path /boot`"
# GRUB path to /boot/grub
GRUB_DRIVE_BOOT_GRUB="`convert_system_path_to_grub_path /boot/grub`"
if test -f ${sysconfdir}/default/grub ; then
. ${sysconfdir}/default/grub
fi
# if ${GRUB_TERMINAL} is set, check it has a sane value. if undefined,
# fallback to our default
case ${platform}:${GRUB_TERMINAL} in
pc:) GRUB_TERMINAL=gfxterm ;;
pc:console | pc:serial) ;;
ieee1275:) GRUB_TERMINAL=ofconsole ;;
ieee1275:ofconsole) ;;
*:) GRUB_TERMINAL=console ;;
*:*) echo "Invalid terminal \"${GRUB_TERMINAL}\"" >&2 ; exit 1 ;;
esac
# check for terminals that require fonts
case ${GRUB_TERMINAL} in
gfxterm)
if GRUB_FONT_PATH=`font_path` ; then : ; else
# fallback to console
GRUB_TERMINAL=console
fi
;;
esac
# does our terminal support utf-8 ?
case ${platform}:${GRUB_TERMINAL} in
*:gfxterm) ;;
*:*)
# make sure all our children behave in conformance with ascii..
export LANG=C
;;
esac
# These are defined in this script, export them here so that user can
# override them.
export GRUB_DEVICE GRUB_FS GRUB_DRIVE GRUB_DRIVE_BOOT GRUB_DRIVE_BOOT_GRUB GRUB_FONT_PATH
# These are optional, user-defined variables.
export GRUB_DEFAULT GRUB_TIMEOUT GRUB_DISTRIBUTOR GRUB_CMDLINE_LINUX GRUB_TERMINAL GRUB_SERIAL_COMMAND
exec > ${grub_cfg}.new
chmod 444 ${grub_cfg}.new
echo "Updating ${grub_cfg} ..." >&2
cat << EOF
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by $0 using templates
# from ${update_grub_dir} and settings from ${sysconfdir}/default/grub
#
EOF
for i in ${update_grub_dir}/* ; do
case "$i" in
# emacsen backup files. FIXME: support other editors
*~) ;;
*)
if test -f "$i" && test -x "$i" ; then
echo
echo "### BEGIN $i ###"
"$i"
echo "### END $i ###"
fi
;;
esac
done
# none of the children aborted with error, install the new grub.cfg
mv ${grub_cfg}.new ${grub_cfg}
echo "done" >&2