b24b503445
1 OBS-URL: https://build.opensuse.org/request/show/405111 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/grub2?expand=0&rev=139
282 lines
7.4 KiB
Bash
282 lines
7.4 KiB
Bash
#!/bin/sh
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set -e
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# Copyright (C) 2006,2007,2008,2009,2010 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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grub_mkconfig="/usr/sbin/grub2-mkconfig"
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grub_mkrelpath="/usr/bin/grub2-mkrelpath"
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grub_script_check="/usr/bin/grub2-script-check"
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grub_setting="/etc/default/grub"
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grub_cfg="/boot/grub2/grub.cfg"
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grub_snapshot_cfg="/boot/grub2/snapshot_submenu.cfg"
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snapper_snapshot_path="/.snapshots"
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snapshot_submenu_name="grub-snapshot.cfg"
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snapper_snapshots_cfg="${snapper_snapshot_path}/${snapshot_submenu_name}"
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# add hotkeys for s390. (bnc#885668)
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hotkey=
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incr_hotkey()
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{
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[ -n "$hotkey" ] || return
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expr $hotkey + 1
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}
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print_hotkey()
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{
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keys="123456789abdfgijklmnoprstuvwyz"
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if [ -z "$hotkey" ]||[ $hotkey -eq 0 ]||[ $hotkey -gt 30 ]; then
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return
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fi
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echo "--hotkey=$(expr substr $keys $hotkey 1)"
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}
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snapshot_submenu () {
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s_dir="$1"
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snapshot="${s_dir}/snapshot"
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num="`basename $s_dir`"
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# bnc#864842 Important snapshots are not marked as such in grub2 menu
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# the format is "important distribution version (kernel_version, timestamp, pre/post)"
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date=`xmllint --xpath '/snapshot/date/text()' "${s_dir}/info.xml" || echo ""`
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date=`echo $date | sed 's/\(.*\) \(.*\):.*/\1T\2/'`
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important=`xmllint --xpath "/snapshot/userdata[key='important']/value/text()" "${s_dir}/info.xml" 2>/dev/null || echo ""`
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stype=`xmllint --xpath '/snapshot/type/text()' "${s_dir}/info.xml" || echo ""`
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kernel_ver=`readlink ${snapshot}/boot/vmlinuz | sed -e 's/^vmlinuz-//' -e 's/-default$//'`
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if [ -z "$kernel_ver" -a -L ${snapshot}/boot/image ]; then
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kernel_ver=`readlink ${snapshot}/boot/image | sed -e 's/^image-//' -e 's/-default$//'`
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fi
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eval `cat ${snapshot}/etc/os-release`
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# bsc#934252 - Replace SLES 12.1 with SLES12-SP1 for the list of snapshots
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if test "${NAME}" = "SLES" -o "${NAME}" = "SLED"; then
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VERSION=`echo ${VERSION} | sed -e 's!^\([0-9]\{1,\}\)\.\([0-9]\{1,\}\)$!\1-SP\2!'`
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fi
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# FATE#318101
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# Show user defined comments in grub2 menu for snapshots
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# Use userdata tag "bootloader=[user defined text]"
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full_desc=`xmllint --xpath "/snapshot/userdata[key='bootloader']/value/text()" "${s_dir}/info.xml" 2>/dev/null || echo ""`
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test -z "$full_desc" && desc=`xmllint --xpath '/snapshot/description/text()' "${s_dir}/info.xml" 2>/dev/null || echo ""`
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# FATE#317972
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# If we have a post entry and the description field is empty,
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# we should use the "Pre" number and add that description to the post entry.
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if test -z "$full_desc" -a -z "$desc" -a "$stype" = "post"; then
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pre_num=`xmllint --xpath '/snapshot/pre_num/text()' "${s_dir}/info.xml" 2>/dev/null || echo ""`
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if test -n "$pre_num"; then
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if test -f "${snapper_snapshot_path}/${pre_num}/info.xml" ; then
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desc=`xmllint --xpath '/snapshot/description/text()' "${snapper_snapshot_path}/${pre_num}/info.xml" 2>/dev/null || echo ""`
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fi
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fi
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fi
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test "$important" = "yes" && important="*" || important=" "
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test "$stype" = "single" && stype=""
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test -z "$stype" || stype=",$stype"
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test -z "$desc" || desc=",$desc"
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test -z "$full_desc" && full_desc="$kernel_ver,$date$stype$desc"
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if test "${NAME}" = "SLES" -o "${NAME}" = "SLED"; then
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title="${important}${NAME}${VERSION} ($full_desc)"
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else
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title="${important}${NAME} ${VERSION} ($full_desc)"
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fi
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if test "$s390" = "1"; then
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subvol="\$2"
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else
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subvol="\$3"
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fi
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cat <<EOF
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if [ -f "${snapper_snapshot_path}/$num/snapshot/boot/grub2/grub.cfg" ]; then
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snapshot_found=true
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saved_subvol=\$btrfs_subvol
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menuentry `print_hotkey` "$title" "${snapper_snapshot_path}/$num/snapshot" "`$grub_mkrelpath ${snapper_snapshot_path}/${num}/snapshot`" {
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btrfs_subvol="$subvol"
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extra_cmdline="rootflags=subvol=\$3"
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export extra_cmdline
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snapshot_num=$num
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export snapshot_num
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configfile "\$2/boot/grub2/grub.cfg"
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btrfs_subvol=\$saved_subvol
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}
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fi
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EOF
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hotkey=`incr_hotkey`
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return 0
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}
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snapper_snapshots_cfg_refresh () {
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if [ ! -d "$snapper_snapshot_path" ]; then
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return
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fi
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cs=
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for s_dir in ${snapper_snapshot_path}/*; do
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snapshot="${s_dir}/snapshot"
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# list only read-only snapshot (bnc#878528)
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if [ ! -d ${s_dir} -o -w "$snapshot" ]; then
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continue
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fi
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if [ -r "${s_dir}/info.xml" -a -r "${s_dir}/snapshot/boot/grub2/grub.cfg" ]; then
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cs="${s_dir}
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${cs}"
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else
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# cleanup any grub-snapshot.cfg without associated snapshot info
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snapper_cfg="${s_dir}/${snapshot_submenu_name}"
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if [ -f "$snapper_cfg" ]; then
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rm -f "$snapper_cfg"
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rmdir "$s_dir" 2>/dev/null || true
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fi
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continue
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fi
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done
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hk=""
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[ -z "$hotkey" ] || hk="--hotkey=s"
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for c in $(printf '%s' "${cs}" | sort -Vr); do
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if ! snapshot_submenu "$c" > "${c}/${snapshot_submenu_name}"; then
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rm -f "${c}/${snapshot_submenu_name}"
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continue
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fi
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snapshot_cfg="${snapshot_cfg}
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if [ -f \"$c/${snapshot_submenu_name}\" ]; then
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source \"$c/${snapshot_submenu_name}\"
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fi"
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done
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cat <<EOF >"${snapper_snapshots_cfg}.new"
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if [ -z "\$extra_cmdline" ]; then
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submenu $hk "Start bootloader from a read-only snapshot" {${snapshot_cfg}
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if [ x\$snapshot_found != xtrue ]; then
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submenu "Not Found" { true; }
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fi
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}
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fi
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EOF
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if ${grub_script_check} "${snapper_snapshots_cfg}.new"; then
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mv -f "${snapper_snapshots_cfg}.new" "${snapper_snapshots_cfg}"
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fi
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}
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snapshot_submenu_clean () {
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for s_dir in ${snapper_snapshot_path}/*; do
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snapper_cfg="${s_dir}/${snapshot_submenu_name}"
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if [ -f "$snapper_cfg" ]; then
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rm -f "$snapper_cfg"
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rmdir "$s_dir" 2>/dev/null || true
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fi
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done
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if [ -f "${snapper_snapshot_path}/${snapshot_submenu_name}" ]; then
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rm -f "${snapper_snapshot_path}/${snapshot_submenu_name}"
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fi
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}
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set_grub_setting () {
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name=$1
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val=$2
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if grep -q "$name" "$grub_setting"; then
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sed -i -e "s!.*\($name\)=.*!\1=\"$val\"!" "$grub_setting"
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else
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echo "$name=\"$val\"" >> "$grub_setting"
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fi
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}
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enable_grub_settings () {
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set_grub_setting SUSE_BTRFS_SNAPSHOT_BOOTING "true"
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}
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disable_grub_settings () {
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set_grub_setting SUSE_BTRFS_SNAPSHOT_BOOTING "false"
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}
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update_grub () {
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"${grub_mkconfig}" -o "${grub_cfg}"
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}
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machine=`uname -m`
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case "$machine" in
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(s390|s390x)
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hotkey=1
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s390=1
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;;
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esac
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cmdline="$0 $* hotkey='$hotkey'"
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# Check the arguments.
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while test $# -gt 0
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do
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option=$1
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shift
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case "$option" in
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-e | --enable)
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opt_enable=true
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;;
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-d | --disable)
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opt_enable=false
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;;
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-r | --refresh)
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opt_refresh=true
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;;
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-c | --clean)
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opt_clean=true
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;;
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-*)
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;;
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esac
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done
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if [ "x${opt_enable}" = "xtrue" ]; then
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#enable_grub_settings
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#update_grub
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snapper_snapshots_cfg_refresh
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elif [ "x${opt_enable}" = "xfalse" ]; then
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#disable_grub_settings
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update_grub
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snapshot_submenu_clean
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fi
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if [ x${opt_refresh} = "xtrue" ]; then
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snapper_snapshots_cfg_refresh
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fi
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if [ x${opt_clean} = "xtrue" ]; then
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snapshot_submenu_clean
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fi
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