/usr/share/lupin-support/grub-mkimage is in lupin-support 0.55.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 | #! /bin/sh -e
# grub-install helper script for lupin. This script will upgrade
# the grub bootloader installed on the host (wubildr).
#
# Copyright (C) Agostino Russo
#
# Lupin 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.
#
# Lupin 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 this program. If not, see <http://www.gnu.org/licenses/>.
newns () {
[ "$LUPIN_NEWNS" ] || exec /usr/lib/lupin-support/newns "$0" "$@"
}
# Look for wubildr on all partitions of BIOS-accessible disk devices.
# We can safely ignore the hibernation case here, because the Windows boot
# loader boots straight into Windows if Windows was hibernated.
find_wubildr () {
local partitions=
for disk in $(grub-mkdevicemap -m - | cut -f2); do
disk="$(readlink -f "$disk")" || continue
sysdisk="/sys$(udevadm info -q path -n "$disk" 2>/dev/null)" || continue
for syspartition in "$sysdisk"/*[0-9]; do
[ -d "$syspartition" ] || continue
partition="/dev/$(udevadm info -q name -p "$syspartition" 2>/dev/null)" || continue
fs="$(grub-probe -t fs -d "$partition" 2>/dev/null)" || continue
[ "$fs" = fat ] || [ "$fs" = ntfs ] || continue
if [ "$(grub-fstest "$partition" ls /wubildr 2>/dev/null)" ]; then
partitions="${partitions:+$partitions }$partition"
fi
done
done
echo "$partitions"
}
parse_proc_mounts () {
while read -r line; do
set -- $line
printf '%s %s %s\n' "$(readlink -f "$1")" "$2" "$3"
done
}
unescape_mount () {
printf %s "$1" | \
sed 's/\\011/ /g; s/\\012/\n/g; s/\\040/ /g; s/\\134/\\/g'
}
newns "$@"
prefix=
test_only=false
for option in "$@"; do
case "$option" in
--prefix=*)
prefix=`echo "$option" | sed 's/--prefix=//'` ;;
--test)
test_only=: ;;
esac
done
GRUB_DEVICE_BOOT="`grub-probe --target=device /boot`"
case ${GRUB_DEVICE_BOOT} in
/dev/loop/*|/dev/loop[0-9])
loop_file=`losetup ${GRUB_DEVICE_BOOT} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
;;
esac
# Is /boot loop-mounted from a file on another filesystem?
if [ "x${loop_file}" = x ] || [ ! -f "${loop_file}" ]; then
exit 1
fi
mtpt="${loop_file%/*}"
while [ -n "$mtpt" ]; do
while read DEV MTPT FSTYPE OPTS REST; do
if [ "$MTPT" = "$mtpt" ]; then
loop_file=${loop_file#$MTPT}
host_mountpoint=$MTPT
break
fi
done < /proc/mounts
mtpt="${mtpt%/*}"
[ -z "$host_mountpoint" ] || break
done
if [ "x${host_mountpoint}" = x ]; then
exit 1
fi
target="${host_mountpoint}/wubildr"
if $test_only; then
if [ -f "$target" ]; then
# Found on this partition
exit 0
elif [ "$(find_wubildr)" ]; then
# Found on some other partition
exit 0
else
# Not found
exit 1
fi
fi
wubildr_partitions="$(find_wubildr)"
if [ ! -f "$target" ] && [ -z "$wubildr_partitions" ]; then
exit 1
fi
# TODO You might want to have this as a proper file somewhere in /usr/share
tmp="$(mktemp -dt)"
echo 'normal (memdisk)/wubildr.cfg' > "$tmp/wubildr-bootstrap.cfg"
cat << EOF > "$tmp/wubildr.cfg"
set show_panic_message=true
if search -s -f -n $loop_file; then
if loopback loop0 $loop_file; then
set root=(loop0)
if [ -e /boot/grub/grub.cfg ]; then
set prefix=(loop0)/boot/grub
if configfile /boot/grub/grub.cfg; then
set show_panic_message=false
fi
elif [ -e /grub/grub.cfg ]; then
set prefix=(loop0)/grub
if configfile /grub/grub.cfg; then
set show_panic_message=false
fi
else
if search -s -f -n /ubuntu/install/wubildr-disk.cfg; then
if configfile /ubuntu/install/wubildr-disk.cfg; then
set show_panic_message=false
fi
fi
fi
fi
fi
if [ \${show_panic_message} = true ]; then
echo "It is not possible to boot from the Ubuntu image."
echo "The Windows partition might be corrupted."
echo "Please reboot into Windows and run: chkdsk /r"
echo "Then try again."
fi
EOF
(cd "$tmp" && tar cf wubildr.tar wubildr.cfg)
# Watch the modules order!
modules=" \
biosdisk part_msdos part_gpt fat ntfs ext2 ntfscomp iso9660 loopback \
search linux boot echo test gzio normal memdisk tar probe configfile"
# Ensure errors pass through the pipeline.
s="$( ((grub-mkimage -O i386-pc ${prefix:+--prefix="$prefix"} -c "$tmp/wubildr-bootstrap.cfg" -m "$tmp/wubildr.tar" $modules; echo $? >&3) | cat /usr/lib/grub/i386-pc/lnxboot.img - > "$tmp/wubildr") 3>&1)"; [ "$s" = 0 ]
if [ -f "$target" ]; then
cp -af "$tmp/wubildr" "$target.new"
mv -f "$target.new" "$target"
fi
grep ^/dev/ /proc/mounts | parse_proc_mounts >"$tmp/mounted-map"
mkdir -p "$tmp/mnt"
for partition in $wubildr_partitions; do
if grep -q "^$partition " "$tmp/mounted-map"; then
mpoint="$(grep "^$partition " "$tmp/mounted-map" | head -n1 | cut -d' ' -f2)"
mpoint="$(unescape_mount "$mpoint")"
if [ "$mpoint" = /host ]; then
continue
fi
else
mount "$partition" "$tmp/mnt" 2>/dev/null || continue
mpoint="$tmp/mnt"
fi
if [ -f "$mpoint/wubildr" ]; then
cp -af "$tmp/wubildr" "$mpoint/wubildr.new"
mv -f "$mpoint/wubildr.new" "$mpoint/wubildr"
fi
if ! grep -q "^$partition " "$tmp/mounted-map"; then
umount "$tmp/mnt" || true
fi
done
rm -rf --one-file-system "$tmp" || true
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