148 lines
4.1 KiB
Bash
148 lines
4.1 KiB
Bash
#! /bin/sh -e
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# Make GRUB rescue image
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# Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
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#
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# GRUB is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# GRUB is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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# Initialize some variables.
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transform="@program_transform_name@"
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prefix=@prefix@
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exec_prefix=@exec_prefix@
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bindir=@bindir@
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libdir=@libdir@
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PACKAGE_NAME=@PACKAGE_NAME@
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PACKAGE_TARNAME=@PACKAGE_TARNAME@
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PACKAGE_VERSION=@PACKAGE_VERSION@
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target_cpu=@target_cpu@
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platform=@platform@
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pkglibdir=${libdir}/`echo ${PACKAGE_TARNAME}/${target_cpu}-${platform} | sed ${transform}`
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grub_mkimage=${bindir}/`echo grub-mkelfimage | sed ${transform}`
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grub_mkisofs=${bindir}/`echo grub-mkisofs | sed ${transform}`
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# Usage: usage
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# Print the usage.
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usage () {
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cat <<EOF
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Usage: $0 [OPTION] output_image
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Make GRUB rescue image.
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-h, --help print this message and exit
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-v, --version print the version information and exit
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--modules=MODULES pre-load specified modules MODULES
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--overlay=DIR overlay directory DIR in the memdisk image
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(may be specified multiple times)
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--pkglibdir=DIR use images from directory DIR instead of ${pkglibdir}
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--grub-mkimage=FILE use FILE as grub-mkimage
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--grub-mkisofs=FILE use FILE as grub-mkisofs
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$0 generates a bootable rescue image.
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Report bugs to <bug-grub@gnu.org>.
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EOF
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}
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input_dir=${pkglibdir}
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# Check the arguments.
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for option in "$@"; do
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case "$option" in
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-h | --help)
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usage
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exit 0 ;;
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-v | --version)
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echo "$0 (GNU GRUB ${PACKAGE_VERSION})"
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exit 0 ;;
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--modules=*)
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modules=`echo "$option" | sed 's/--modules=//'` ;;
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--overlay=*)
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overlay=${overlay}${overlay:+ }`echo "$option" | sed 's/--overlay=//'` ;;
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--pkglibdir=*)
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input_dir=`echo "$option" | sed 's/--pkglibdir=//'` ;;
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--grub-mkimage=*)
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grub_mkimage=`echo "$option" | sed 's/--grub-mkimage=//'` ;;
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--grub-mkisofs=*)
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grub_mkisofs=`echo "$option" | sed 's/--grub-mkisofs=//'` ;;
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-*)
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echo "Unrecognized option \`$option'" 1>&2
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usage
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exit 1
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;;
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*)
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if test "x$output_image" != x; then
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echo "Unrecognized option \`$option'" 1>&2
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usage
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exit 1
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fi
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output_image="${option}" ;;
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esac
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done
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if test "x$output_image" = x; then
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usage
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exit 1
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fi
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memdisk_dir=`mktemp -d`
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iso9660_dir=`mktemp -d`
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mkdir -p ${memdisk_dir}/boot/grub ${iso9660_dir}/boot/grub
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for file in ${input_dir}/*.mod ${input_dir}/efiemu??.o \
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${input_dir}/command.lst ${input_dir}/moddep.lst ${input_dir}/fs.lst \
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${input_dir}/handler.lst ${input_dir}/parttool.lst; do
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if test -f "$file"; then
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cp -f "$file" ${iso9660_dir}/boot/grub/
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fi
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done
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# obtain date-based UUID
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iso_uuid=$(date +%Y-%m-%d-%H-%M-%S-00)
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# first-stage grub.cfg
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cat << EOF >> ${memdisk_dir}/boot/grub/grub.cfg
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search --fs-uuid --set ${iso_uuid}
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set prefix=(\${root})/boot/grub
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source /boot/grub/grub.cfg
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EOF
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# build memdisk
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memdisk_img=`mktemp`
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tar -C ${memdisk_dir} -cf ${memdisk_img} boot
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rm -rf ${memdisk_dir}
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# build core.img
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mkdir -p ${iso9660_dir}/boot/grub
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${grub_mkimage} -d ${input_dir}/ -m ${memdisk_img} -o ${iso9660_dir}/boot/multiboot.img \
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at_keyboard memdisk tar ata search iso9660 configfile sh
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rm -f ${memdisk_img}
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for d in ${overlay}; do
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echo "Overlaying $d"
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cp -dpR "${d}"/* "${iso9660_dir}"/
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done
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# second-stage grub.cfg
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modules="`cat ${input_dir}/partmap.lst` ${modules}"
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for i in ${modules} ; do
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echo "insmod $i"
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done > ${iso9660_dir}/boot/grub/grub.cfg
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# build iso image
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${grub_mkisofs} \
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--modification-date=$(echo ${iso_uuid} | sed -e s/-//g) \
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-o ${output_image} -r -J ${iso9660_dir}
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exit 0
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