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#! /bin/sh
# Install GRUB on your drive.
# Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
#
# This file 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 of the License, 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Initialize some variables.
prefix=/usr
exec_prefix=/usr
sbindir=/sbin
datadir=/usr/share
PACKAGE=grub
VERSION=0.97
host_cpu=x86_64
host_os=linux-gnu
host_vendor=redhat
pkgdatadir=${datadir}/${PACKAGE}/${host_cpu}-${host_vendor}
grub_shell=${sbindir}/grub
mdadm=${sbindir}/mdadm
log_file=/tmp/grub-install.log.$$
img_file=/tmp/grub-install.img.$$
rootdir=
grub_prefix=/boot/grub
install_drives=
install_device=
no_floppy=
force_lba=
recheck=no
debug=no
justcopy=no
# look for secure tempfile creation wrappers on this platform
if test -x /bin/tempfile; then
mklog="/bin/tempfile --prefix=grub"
mkimg="/bin/tempfile --prefix=grub"
elif test -x /bin/mktemp; then
mklog="/bin/mktemp /tmp/grub-install.log.XXXXXX"
mkimg="/bin/mktemp /tmp/grub-install.img.XXXXXX"
else
mklog=""
mkimg=""
fi
# Usage: usage
# Print the usage.
usage () {
cat <<EOF
Usage: grub-install [OPTION] install_device
Install GRUB on your drive.
-h, --help print this message and exit
-v, --version print the version information and exit
--root-directory=DIR install GRUB images under the directory DIR
instead of the root directory
--grub-shell=FILE use FILE as the grub shell
--no-floppy do not probe any floppy drive
--force-lba force GRUB to use LBA mode even for a buggy
BIOS
--recheck probe a device map even if it already exists
This flag is unreliable and its use is
strongly discouraged.
INSTALL_DEVICE can be a GRUB device name or a system device filename.
grub-install copies GRUB images into the DIR/boot directory specfied by
--root-directory, and uses the grub shell to install grub into the boot
sector.
Report bugs to <bug-grub@gnu.org>.
EOF
}
# Usage: convert os_device
# Convert an OS device to the corresponding GRUB drive.
# This part is OS-specific.
convert () {
# First, check if the device file exists.
if test -e "$1"; then
:
else
echo "$1: Not found or not a block device." 1>&2
exit 1
fi
# Break the device name into the disk part and the partition part.
case "$host_os" in
linux*)
tmp_disk=`echo "$1" | grep -v '/mapper/control$' |
grep -v '/mapper/[[:alnum:]]\+-[[:alnum:]]\+$' | uniq |
sed -e 's%\([shv]d[[:lower:]]\+\)[0-9]*$%\1%' \
-e 's%\(d[0-9]*\)p[0-9]*$%\1%' \
-e 's%\(fd[0-9]*\)$%\1%' \
-e 's%/part[0-9]*$%/disc%' \
-e 's%\(c[0-7]d[0-9]*\).*$%\1%' \
-e 's%\(/mapper/[[:alpha:]]\+[[:digit:]]*\)p[[:digit:]]\+$%\1%' \
-e 's%\(/mapper/isw_[[:alpha:]_]\+[[:alpha:]]\+[[:digit:]]\+\)p[[:digit:]]\+$%\1%' \
-e 's%\(/mapper/[[:alpha:]]\+_[[:alpha:]]\+\)[[:digit:]]\+$%\1%' \
-e 's%\(/mapper/[[:alnum:]]\+\(_[[:alnum:]]\+\)\+\)\p[[:digit:]]\+$%\1%' \
-e 's%\(/mapper/[[:alnum:]_-]\+\)\+p[[:digit:]]\+$%\1%' \
-e 's%\(nvme[0-9]*n[0-9]*\)p[0-9]*$%\1%'`
tmp_part=`echo "$1" | grep -v '/mapper/control$' |
grep -v '/mapper/[[:alnum:]]\+-[[:alnum:]]\+$' | uniq |
sed -e 's%.*/[shv]d[[:lower:]]\+\([0-9]*\)$%\1%' \
-e 's%.*d[0-9]*p%%' \
-e 's%.*/fd[0-9]*$%%' \
-e 's%.*/floppy/[0-9]*$%%' \
-e 's%.*/\(disc\|part\([0-9]*\)\)$%\2%' \
-e 's%.*c[0-7]d[0-9]*%%' \
-e 's%.*/mapper/[[:alpha:]]\+[[:digit:]]*p\([[:digit:]]\+\)$%\1%' \
-e 's%.*/mapper/isw_[[:alpha:]_]\+[[:alpha:]]\+[[:digit:]]\+p\([[:digit:]]\+\)$%\1%' \
-e 's%.*/mapper/[[:alpha:]]\+_[[:alpha:]]\+\([[:digit:]]\+\)$%\1%' \
-e 's%.*/mapper/[[:alnum:]]\+\(_[[:alpha:]]\+[[:digit:]]*\)\+p\([[:digit:]]\+\)$%\2%' \
-e 's%.*/mapper/[[:alnum:]_-]\+p\([[:digit:]]\+\)$%\1%' \
-e 's%.*/nvme[0-9]*n[0-9]*p\([0-9]*\)%\1%' |
grep -v '.*/mapper/.*'`
;;
gnu*)
tmp_disk=`echo "$1" | sed 's%\([sh]d[0-9]*\).*%\1%'`
tmp_part=`echo "$1" | sed "s%$tmp_disk%%"` ;;
freebsd* | kfreebsd*-gnu)
tmp_disk=`echo "$1" | sed 's%r\{0,1\}\([saw]d[0-9]*\).*$%r\1%' \
| sed 's%r\{0,1\}\(da[0-9]*\).*$%r\1%'`
tmp_part=`echo "$1" \
| sed "s%.*/r\{0,1\}[saw]d[0-9]\(s[0-9]*[a-h]\)%\1%" \
| sed "s%.*/r\{0,1\}da[0-9]\(s[0-9]*[a-h]\)%\1%"`
;;
netbsd* | knetbsd*-gnu)
tmp_disk=`echo "$1" | sed 's%r\{0,1\}\([sw]d[0-9]*\).*$%r\1d%' \
| sed 's%r\{0,1\}\(fd[0-9]*\).*$%r\1a%'`
tmp_part=`echo "$1" \
| sed "s%.*/r\{0,1\}[sw]d[0-9]\([abe-p]\)%\1%"`
;;
*)
echo "grub-install does not support your OS yet." 1>&2
exit 1 ;;
esac
# Get the drive name.
tmp_drive=`grep -v '^#' $device_map | grep "$tmp_disk *$" \
| sed 's%.*\(([hf]d[0-9][a-g0-9,]*)\).*%\1%'`
# If not found, print an error message and exit.
if test "x$tmp_drive" = x; then
echo "$1 does not have any corresponding BIOS drive." 1>&2
exit 1
fi
if test "x$tmp_part" != x; then
# If a partition is specified, we need to translate it into the
# GRUB's syntax.
case "$host_os" in
linux*)
echo "$tmp_drive" | sed "s%)$%,`expr $tmp_part - 1`)%" ;;
gnu*)
if echo $tmp_part | grep "^s" >/dev/null; then
tmp_pc_slice=`echo $tmp_part \
| sed "s%s\([0-9]*\)[a-g]*$%\1%"`
tmp_drive=`echo "$tmp_drive" \
| sed "s%)%,\`expr "$tmp_pc_slice" - 1\`)%"`
fi
if echo $tmp_part | grep "[a-g]$" >/dev/null; then
tmp_bsd_partition=`echo "$tmp_part" \
| sed "s%[^a-g]*\([a-g]\)$%\1%"`
tmp_drive=`echo "$tmp_drive" \
| sed "s%)%,$tmp_bsd_partition)%"`
fi
echo "$tmp_drive" ;;
freebsd* | kfreebsd*-gnu)
if echo $tmp_part | grep "^s" >/dev/null; then
tmp_pc_slice=`echo $tmp_part \
| sed "s%s\([0-9]*\)[a-h]*$%\1%"`
tmp_drive=`echo "$tmp_drive" \
| sed "s%)%,\`expr "$tmp_pc_slice" - 1\`)%"`
fi
if echo $tmp_part | grep "[a-h]$" >/dev/null; then
tmp_bsd_partition=`echo "$tmp_part" \
| sed "s%s\{0,1\}[0-9]*\([a-h]\)$%\1%"`
tmp_drive=`echo "$tmp_drive" \
| sed "s%)%,$tmp_bsd_partition)%"`
fi
echo "$tmp_drive" ;;
netbsd* | knetbsd*-gnu)
if echo $tmp_part | grep "^[abe-p]$" >/dev/null; then
tmp_bsd_partition=`echo "$tmp_part" \
| sed "s%\([a-p]\)$%\1%"`
tmp_drive=`echo "$tmp_drive" \
| sed "s%)%,$tmp_bsd_partition)%"`
fi
echo "$tmp_drive" ;;
esac
else
# If no partition is specified, just print the drive name.
echo "$tmp_drive"
fi
}
# Usage: resolve_symlink file
# Find the real file/device that file points at
resolve_symlink () {
tmp_fname=$1
# Resolve symlinks
while test -L $tmp_fname; do
tmp_new_fname=`ls -al $tmp_fname | sed -n 's%.*-> \(.*\)%\1%p'`
if test -z "$tmp_new_fname"; then
echo "Unrecognized ls output" 1>&2
exit 1
fi
# Convert relative symlinks
case $tmp_new_fname in
/*) tmp_fname="$tmp_new_fname"
;;
*) tmp_fname="`echo $tmp_fname | sed 's%/[^/]*$%%'`/$tmp_new_fname"
;;
esac
done
echo "$tmp_fname"
}
# Usage: is_raid1_device devicename
# Returns 0 if devicename is a raid1 md device, 1 if it is not.
is_raid1_device () {
case "$host_os" in
linux*)
level=`$mdadm --query --detail $1 2>/dev/null | \
awk '/Raid Level :/ {print $4}'`
if [ "$level" = "raid1" ]; then
return 0
fi
;;
esac
return 1
}
# Usage: find_real_devs device
# Returns space separated list of devices for linux if device is
# a raid1 device. In all other cases, the provided value is returned.
find_real_devs () {
source_device=$1
case "$host_os" in
linux*)
if is_raid1_device $source_device ; then
list=""
for device in `$mdadm --query --detail "${source_device}" | \
awk '/\/dev\/[^(md)]/ {print $7}'` ; do
list="$list $device"
done
echo $list
return 0
fi
;;
esac
echo $source_device
return 0
}
# Usage: stat_device file
# Find major:minor of a device node.
stat_device() {
dev=`resolve_symlink $1`
majmin=`stat -c "%t:%T" "$dev" 2>/dev/null`
if test -z "$majmin"; then
echo "Could not find device for $1" 1>&2
exit 1
fi
echo "$majmin"
}
# Usage: find_mapper_device file
# Find a file in /dev/mapper with the same major:minor as the specified node.
find_mapper_device() {
if [ -b "$1" ]; then
dev="$1"
else
mntpnt=`echo "$1" | sed 's,/,\\\\/,g'`
dev=`awk '($2 ~ /'$mntpnt'/) { print $1 }' /etc/mtab`
fi
if test -z "$dev"; then
echo "Could not find device for $1" 1>&2
exit 1
fi
majmin=`stat_device $dev`
for x in /dev/mapper/* ; do
devmajmin=`stat_device "$x"`
if [ "$majmin" == "$devmajmin" ]; then
echo "$x"
return 0
fi
done
return 1
}
# Usage: find_device file
# Find block device on which the file resides.
find_device () {
# For now, this uses the program `df' to get the device name, but is
# this really portable?
tmp_fname=`df $1/ | sed -n 's%.*\(/dev/[^ ]*\).*%\1%p'`
if test -z "$tmp_fname"; then
echo "Could not find device for $1" 1>&2
exit 1
fi
ret_fname=`resolve_symlink $tmp_fname` || exit 1
tmp_fname=`find_mapper_device $ret_fname`
if test -n "$tmp_fname"; then
ret_fname="$tmp_fname"
fi
echo "$ret_fname"
return 0
}
copy_images() {
# Copy the GRUB images to the GRUB directory.
for file in ${grubdir}/stage1 ${grubdir}/stage2 ${grubdir}/*stage1_5; do
rm -f $file || exit 1
done
for file in \
${pkgdatadir}/stage1 ${pkgdatadir}/stage2 ${pkgdatadir}/*stage1_5; do
cp -f $file ${grubdir} 1>&2 || exit 1
done
}
dump_boot_block () {
sync
$grub_shell --batch $no_floppy --device-map=$device_map <<EOF >$log_file
dump ${root_drive}${tmp} ${img_file}
quit
EOF
}
install_boot_block () {
# Before all invocations of the grub shell, call sync to make sure
# the raw device is in sync with any bufferring in filesystems.
sync
# Now perform the installation.
$grub_shell --batch $no_floppy --device-map=$device_map <<EOF >>$log_file
root $1
setup $force_lba --stage2=$grubdir/stage2 --prefix=$grub_prefix $2
quit
EOF
}
# Check the arguments.
for option in "$@"; do
case "$option" in
-h | --help)
usage
exit 0 ;;
-v | --version)
echo "grub-install (GNU GRUB ${VERSION})"
exit 0 ;;
--root-directory=*)
rootdir=`echo "$option" | sed 's/--root-directory=//'` ;;
--grub-shell=*)
grub_shell=`echo "$option" | sed 's/--grub-shell=//'` ;;
--no-floppy)
no_floppy="--no-floppy" ;;
--force-lba)
force_lba="--force-lba" ;;
--recheck)
recheck=yes ;;
--just-copy)
justcopy=yes ;;
# This is an undocumented feature...
--debug)
debug=yes ;;
-*)
echo "Unrecognized option \`$option'" 1>&2
usage
exit 1
;;
*)
if test "x$install_device" != x; then
echo "More than one install_devices?" 1>&2
usage
exit 1
fi
install_device="${option}" ;;
esac
done
# If the debugging feature is enabled, print commands.
if test $debug = yes; then
set -x
fi
# Initialize these directories here, since ROOTDIR was initialized.
case "$host_os" in
netbsd* | openbsd*)
# Because /boot is used for the boot block in NetBSD and OpenBSD, use /grub
# instead of /boot/grub.
grub_prefix=/grub
bootdir=${rootdir}
;;
*)
# Use /boot/grub by default.
bootdir=${rootdir}/boot
;;
esac
grubdir=${bootdir}/grub
device_map=${grubdir}/device.map
if [ "$recheck" == "yes" ]; then
if grep 'mapper' ${device_map} >/dev/null; then
echo 'grub-install does not support reprobing of device.map when' 1>&2
echo 'using a device-mapper based boot device.' 1>&2
exit 1
fi
fi
# if they just want the images copied, copy the images and then exit
if test $justcopy = yes; then
copy_images
exit 0
fi
if test "x$install_device" = x; then
echo "install_device not specified." 1>&2
usage
exit 1
fi
# Check if GRUB is installed.
# This is necessary, because the user can specify "grub --read-only".
set $grub_shell dummy
if test -f "$1"; then
:
else
echo "$1: Not found." 1>&2
exit 1
fi
if test -f "$pkgdatadir/stage1"; then
:
else
echo "${pkgdatadir}/stage1: Not found." 1>&2
exit 1
fi
if test -f "$pkgdatadir/stage2"; then
:
else
echo "${pkgdatadir}/stage2: Not found." 1>&2
exit 1
fi
# Don't check for *stage1_5, because it is not fatal even if any
# Stage 1.5 does not exist.
# Create the GRUB directory if it is not present.
test -d "$bootdir" || mkdir "$bootdir" || exit 1
test -d "$grubdir" || mkdir "$grubdir" || exit 1
copy_images
# If --recheck is specified, remove the device map, if present.
if test $recheck = yes; then
mv $device_map ${device_map}.backup
fi
# Create the device map file if it is not present.
if test -f "$device_map"; then
:
else
# Create a safe temporary file.
test -n "$mklog" && log_file=`$mklog`
# Before all invocations of the grub shell, call sync to make sure
# the raw device is in sync with any bufferring in filesystems.
sync
$grub_shell --batch $no_floppy --device-map=$device_map <<EOF >$log_file
quit
EOF
if grep "Error [0-9]*: " $log_file >/dev/null; then
cat $log_file 1>&2
exit 1
fi
rm -f $log_file
fi
# Make sure that there is no duplicated entry.
tmp=`sed -n '/^([fh]d[0-9]*)/s/\(^(.*)\).*/\1/p' $device_map \
| sort | uniq -d | sed -n 1p`
if test -n "$tmp"; then
echo "The drive $tmp is defined multiple times in the new device map." 1>&2
if test $recheck = yes; then
echo "Reverting to backed up copy." 1>&2
mv ${device_map}.backup $device_map
fi
exit 1
fi
# Make sure device.map has at least one hd device
grep -q "^(hd[0-9]\+)" $device_map
if [ "x$?" != "x0" ]; then
echo "No suitable drive was found in the generated device map." 1>&2
if test $recheck = yes; then
echo "Reverting to backed up copy." 1>&2
mv ${device_map}.backup $device_map
fi
exit 1
fi
# Check for INSTALL_DEVICE.
case "$install_device" in
/dev/*)
echo $install_device | grep -q "^/dev/mapper"
if [ "x$?" != "x0" ]; then
install_device=`resolve_symlink "$install_device"` || exit 1
fi
for install_drive in `find_real_devs $install_device` ; do
install_drive=`convert $install_drive` || exit 1
if is_raid1_device $install_device; then
install_drive=`echo $install_drive | sed 's/,[0-9]*)/)/'`
fi
if [ "x$install_drive" = "x" ]; then
exit 1
fi
install_drives="${install_drives} ${install_drive}"
done
unset install_drive
if test "x$install_drives" = x ; then
exit 1
fi ;;
\([hf]d[0-9]*\))
install_drives="$install_device" ;;
[hf]d[0-9]*)
# The GRUB format with no parenthesis.
install_drives="($install_device)" ;;
*)
echo "Format of install_device not recognized." 1>&2
usage
exit 1 ;;
esac
unset install_device
# Get the root drive.
root_device=`find_device ${rootdir}` || exit 1
bootdir_device=`find_device ${bootdir}` || exit 1
# Check if the boot directory is in the same device as the root directory.
if test "x$root_device" != "x$bootdir_device"; then
# Perhaps the user has a separate boot partition.
root_device=$bootdir_device
grub_prefix="/grub"
fi
# Check if the root directory exists in the same device as the grub directory.
grubdir_device=`find_device ${grubdir}` || exit 1
if test "x$grubdir_device" != "x$root_device"; then
# For now, cannot deal with this situation.
cat <<EOF 1>&2
You must set the root directory by the option --root-directory, because
$grubdir does not exist in the root device $root_device.
EOF
exit 1
fi
# Make sure that GRUB reads the same images as the host OS.
test -n "$mkimg" && img_file=`$mkimg`
test -n "$mklog" && log_file=`$mklog`
# There's not a real root device, so just pick the first
if is_raid1_device $root_device ; then
root_device=`find_real_devs $root_device | awk '{print $1}'`
fi
# Convert the root deviceto a GRUB drive.
root_drive=`convert "$root_device"` || exit 1
if [ "x$root_drive" = x ]; then
exit 1
fi
for file in ${grubdir}/stage1 ${grubdir}/stage2 ${grubdir}/*stage1_5; do
count=5
tmp=`echo $file | sed "s|^${grubdir}|${grub_prefix}|"`
while test $count -gt 0; do
dump_boot_block $root_drive $img_file
if grep "Error [0-9]*: " $log_file >/dev/null; then
:
else
# Use sha1sum instead of cmp to avoid a dependency on diffutils.
sha1=`sha1sum $file | cut -d' ' -f 1`
sha2=`sha1sum $img_file | cut -d' ' -f 1`
if test -f $file -a -f $img_file -a "$sha1" = "$sha2"; then
break
fi
fi
sleep 1
count=`expr $count - 1`
done
if test $count -eq 0; then
echo "The file $file not read correctly." 1>&2
exit 1
fi
done
rm -f $img_file
rm -f $log_file
if ! test -e ${grubdir}/grub.conf ; then
test -e ${grubdir}/menu.lst && ln -s ./menu.lst ${grubdir}/grub.conf
fi
# Create a safe temporary file.
test -n "$mklog" && log_file=`$mklog`
for install_drive in $install_drives; do
# Convert the root deviceto a GRUB drive.
root_drive=`convert "$root_device"` || exit 1
if [ "x$root_drive" = x ]; then
exit 1
fi
install_boot_block $root_drive $install_drive
done
if grep "Error [0-9]*: " $log_file >/dev/null ; then
cat $log_file 1>&2
exit 1
fi
if test $debug = yes; then
cat $log_file 1>&2
fi
rm -f $log_file
# Prompt the user to check if the device map is correct.
echo "Installation finished. No error reported."
echo "This is the contents of the device map $device_map."
echo "Check if this is correct or not. If any of the lines is incorrect,"
echo "fix it and re-run the script \`grub-install'."
echo
cat $device_map
# Bye.
exit 0