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openSUSE:Leap:42.3:Rings:1-MinimalX
grub2
grub2-snapper-plugin.sh
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File grub2-snapper-plugin.sh of Package grub2
#!/bin/sh set -e # Copyright (C) 2006,2007,2008,2009,2010 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/>. grub_mkconfig="/usr/sbin/grub2-mkconfig" grub_mkrelpath="/usr/bin/grub2-mkrelpath" grub_script_check="/usr/bin/grub2-script-check" grub_setting="/etc/default/grub" grub_cfg="/boot/grub2/grub.cfg" grub_snapshot_cfg="/boot/grub2/snapshot_submenu.cfg" snapper_snapshot_path="/.snapshots" snapshot_submenu_name="grub-snapshot.cfg" snapper_snapshots_cfg="${snapper_snapshot_path}/${snapshot_submenu_name}" # add hotkeys for s390. (bnc#885668) hotkey= incr_hotkey() { [ -n "$hotkey" ] || return expr $hotkey + 1 } print_hotkey() { keys="123456789abdfgijklmnoprstuvwyz" if [ -z "$hotkey" ]||[ $hotkey -eq 0 ]||[ $hotkey -gt 30 ]; then return fi echo "--hotkey=$(expr substr $keys $hotkey 1)" } snapshot_submenu () { s_dir="$1" snapshot="${s_dir}/snapshot" num="`basename $s_dir`" # bnc#864842 Important snapshots are not marked as such in grub2 menu # the format is "important distribution version (kernel_version, timestamp, pre/post)" date=`xmllint --xpath '/snapshot/date/text()' "${s_dir}/info.xml" || echo ""` date=`echo $date | sed 's/\(.*\) \(.*\):.*/\1T\2/'` important=`xmllint --xpath "/snapshot/userdata[key='important']/value/text()" "${s_dir}/info.xml" 2>/dev/null || echo ""` stype=`xmllint --xpath '/snapshot/type/text()' "${s_dir}/info.xml" || echo ""` kernel_ver=`readlink ${snapshot}/boot/vmlinuz | sed -e 's/^vmlinuz-//' -e 's/-default$//'` if [ -z "$kernel_ver" -a -L ${snapshot}/boot/image ]; then kernel_ver=`readlink ${snapshot}/boot/image | sed -e 's/^image-//' -e 's/-default$//'` fi eval `cat ${snapshot}/etc/os-release` # bsc#934252 - Replace SLES 12.1 with SLES12-SP1 for the list of snapshots if test "${NAME}" = "SLES" -o "${NAME}" = "SLED"; then VERSION=`echo ${VERSION} | sed -e 's!^\([0-9]\{1,\}\)\.\([0-9]\{1,\}\)$!\1-SP\2!'` fi # FATE#318101 # Show user defined comments in grub2 menu for snapshots # Use userdata tag "bootloader=[user defined text]" full_desc=`xmllint --xpath "/snapshot/userdata[key='bootloader']/value/text()" "${s_dir}/info.xml" 2>/dev/null || echo ""` test -z "$full_desc" && desc=`xmllint --xpath '/snapshot/description/text()' "${s_dir}/info.xml" 2>/dev/null || echo ""` # FATE#317972 # If we have a post entry and the description field is empty, # we should use the "Pre" number and add that description to the post entry. if test -z "$full_desc" -a -z "$desc" -a "$stype" = "post"; then pre_num=`xmllint --xpath '/snapshot/pre_num/text()' "${s_dir}/info.xml" 2>/dev/null || echo ""` if test -n "$pre_num"; then if test -f "${snapper_snapshot_path}/${pre_num}/info.xml" ; then desc=`xmllint --xpath '/snapshot/description/text()' "${snapper_snapshot_path}/${pre_num}/info.xml" 2>/dev/null || echo ""` fi fi fi test "$important" = "yes" && important="*" || important=" " test "$stype" = "single" && stype="" test -z "$stype" || stype=",$stype" test -z "$desc" || desc=",$desc" test -z "$full_desc" && full_desc="$kernel_ver,$date$stype$desc" if test "${NAME}" = "SLES" -o "${NAME}" = "SLED"; then title="${important}${NAME}${VERSION} ($full_desc)" else title="${important}${NAME} ${VERSION} ($full_desc)" fi if test "$s390" = "1"; then subvol="\$2" else subvol="\$3" fi cat <<EOF if [ -f "${snapper_snapshot_path}/$num/snapshot/boot/grub2/grub.cfg" ]; then snapshot_found=true saved_subvol=\$btrfs_subvol menuentry `print_hotkey` "$title" "${snapper_snapshot_path}/$num/snapshot" "`$grub_mkrelpath ${snapper_snapshot_path}/${num}/snapshot`" { btrfs_subvol="$subvol" extra_cmdline="rootflags=subvol=\$3" export extra_cmdline snapshot_num=$num export snapshot_num configfile "\$2/boot/grub2/grub.cfg" btrfs_subvol=\$saved_subvol } fi EOF hotkey=`incr_hotkey` return 0 } snapper_snapshots_cfg_refresh () { if [ ! -d "$snapper_snapshot_path" ]; then return fi cs= for s_dir in ${snapper_snapshot_path}/*; do snapshot="${s_dir}/snapshot" # list only read-only snapshot (bnc#878528) if [ ! -d ${s_dir} -o -w "$snapshot" ]; then continue fi if [ -r "${s_dir}/info.xml" -a -r "${s_dir}/snapshot/boot/grub2/grub.cfg" ]; then cs="${s_dir} ${cs}" else # cleanup any grub-snapshot.cfg without associated snapshot info snapper_cfg="${s_dir}/${snapshot_submenu_name}" if [ -f "$snapper_cfg" ]; then rm -f "$snapper_cfg" rmdir "$s_dir" 2>/dev/null || true fi continue fi done hk="" [ -z "$hotkey" ] || hk="--hotkey=s" for c in $(printf '%s' "${cs}" | sort -Vr); do if ! snapshot_submenu "$c" > "${c}/${snapshot_submenu_name}"; then rm -f "${c}/${snapshot_submenu_name}" continue fi snapshot_cfg="${snapshot_cfg} if [ -f \"$c/${snapshot_submenu_name}\" ]; then source \"$c/${snapshot_submenu_name}\" fi" done cat <<EOF >"${snapper_snapshots_cfg}.new" if [ -z "\$extra_cmdline" ]; then submenu $hk "Start bootloader from a read-only snapshot" {${snapshot_cfg} if [ x\$snapshot_found != xtrue ]; then submenu "Not Found" { true; } fi } fi EOF if ${grub_script_check} "${snapper_snapshots_cfg}.new"; then mv -f "${snapper_snapshots_cfg}.new" "${snapper_snapshots_cfg}" fi } snapshot_submenu_clean () { for s_dir in ${snapper_snapshot_path}/*; do snapper_cfg="${s_dir}/${snapshot_submenu_name}" if [ -f "$snapper_cfg" ]; then rm -f "$snapper_cfg" rmdir "$s_dir" 2>/dev/null || true fi done if [ -f "${snapper_snapshot_path}/${snapshot_submenu_name}" ]; then rm -f "${snapper_snapshot_path}/${snapshot_submenu_name}" fi } set_grub_setting () { name=$1 val=$2 if grep -q "$name" "$grub_setting"; then sed -i -e "s!.*\($name\)=.*!\1=\"$val\"!" "$grub_setting" else echo "$name=\"$val\"" >> "$grub_setting" fi } enable_grub_settings () { set_grub_setting SUSE_BTRFS_SNAPSHOT_BOOTING "true" } disable_grub_settings () { set_grub_setting SUSE_BTRFS_SNAPSHOT_BOOTING "false" } update_grub () { "${grub_mkconfig}" -o "${grub_cfg}" } machine=`uname -m` case "$machine" in (s390|s390x) hotkey=1 s390=1 ;; esac cmdline="$0 $* hotkey='$hotkey'" # Check the arguments. while test $# -gt 0 do option=$1 shift case "$option" in -e | --enable) opt_enable=true ;; -d | --disable) opt_enable=false ;; -r | --refresh) opt_refresh=true ;; -c | --clean) opt_clean=true ;; -*) ;; esac done if [ "x${opt_enable}" = "xtrue" ]; then #enable_grub_settings #update_grub snapper_snapshots_cfg_refresh elif [ "x${opt_enable}" = "xfalse" ]; then #disable_grub_settings update_grub snapshot_submenu_clean fi if [ x${opt_refresh} = "xtrue" ]; then snapper_snapshots_cfg_refresh fi if [ x${opt_clean} = "xtrue" ]; then snapshot_submenu_clean fi
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