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41_snapshots-btrfs
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578
41_snapshots-btrfs
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#! /usr/bin/env bash
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#
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# Written by: Antynea
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# BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
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# Github: https://github.com/Antynea/grub-btrfs
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#
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# Purpose:
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# Improves Grub by adding "btrfs snapshots" to the Grub menu.
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# You can boot your system on a "snapshot" from the Grub menu.
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# Supports manual snapshots, snapper, timeshift ...
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# Warning : booting on read-only snapshots can be tricky.
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# (Read about it, https://github.com/Antynea/grub-btrfs#warning-booting-on-read-only-snapshots-can-be-tricky)
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#
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# What this script does:
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# - Automatically List snapshots existing on root partition (btrfs).
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# - Automatically Detect if "/boot" is in separate partition.
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# - Automatically Detect kernel, initramfs and intel/amd microcode in "/boot" directory on snapshots.
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# - Automatically Create corresponding "menuentry" in grub.cfg.
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# - Automatically detect the type/tags and descriptions/comments of snapper/timeshift snapshots.
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# - Automatically generate grub.cfg if you use the provided systemd service.
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#
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# Installation:
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# - Refer to https://github.com/Antynea/grub-btrfs#installation-
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#
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# Customization:
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# You have the possibility to modify many parameters in /etc/default/grub-btrfs/config.
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#
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# Automatically update Grub
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# If you would like grub-btrfs menu to automatically update when a snapshot is created or deleted:
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# - Refer to https://github.com/Antynea/grub-btrfs#automatically-update-grub.
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#
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# Special thanks for assistance and contributions:
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# - My friends
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# - All contributors on Github
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#
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set -e
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sysconfdir="/etc"
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grub_btrfs_config="${sysconfdir}/default/grub-btrfs/config"
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[[ -f "$grub_btrfs_config" ]] && . "$grub_btrfs_config"
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[[ -f "${sysconfdir}/default/grub" ]] && . "${sysconfdir}/default/grub"
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## Exit the script, if:
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[[ "${GRUB_BTRFS_DISABLE,,}" == "true" ]] && exit 0 # Disable Grub-btrfs is set to true (default=false)
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if ! type btrfs >/dev/null 2>&1; then exit 0; fi # btrfs-progs isn't installed
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[[ -f "${GRUB_BTRFS_MKCONFIG_LIB:-/usr/share/grub/grub-mkconfig_lib}" ]] && . "${GRUB_BTRFS_MKCONFIG_LIB:-/usr/share/grub/grub-mkconfig_lib}" || exit 0 # grub-mkconfig_lib couldn't be found
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# Root filesystem isn't btrfs
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root_fs=$(${grub_probe} --target="fs" / 2>/dev/null)
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[[ "$root_fs" != "btrfs" ]] && exit 0
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## Error Handling
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print_error()
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{
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local err_msg="$*"
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local bug_report="If you think an error has occurred , please file a bug report at \" https://github.com/Antynea/grub-btrfs \""
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printf "%s\n" "${err_msg}" "${bug_report}" >&2 ;
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exit 0
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}
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printf "Detecting snapshots ...\n" >&2 ;
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## Submenu name
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distro=$(awk -F "=" '/^NAME=/ {gsub(/"/, "", $2); print $2}' /etc/os-release)
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submenuname=${GRUB_BTRFS_SUBMENUNAME:-"${distro:-Linux} snapshots"}
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## Limit snapshots to show in the Grub menu (default=50)
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limit_snap_show="${GRUB_BTRFS_LIMIT:-50}"
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## How to sort snapshots list
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btrfs_subvolume_sort="--sort=${GRUB_BTRFS_SUBVOLUME_SORT:-"-rootid"}"
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## Customize GRUB directory, where "grub.cfg" file is saved
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grub_directory=${GRUB_BTRFS_GRUB_DIRNAME:-"/boot/grub"}
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## Customize BOOT directory, where kernels/initrams/microcode is saved.
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boot_directory=${GRUB_BTRFS_BOOT_DIRNAME:-"/boot"}
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## Password protection management for submenu
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# Protection support for submenu (--unrestricted)
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case "${GRUB_BTRFS_DISABLE_PROTECTION_SUBMENU,,}" in
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true) unrestricted_access_submenu="--unrestricted ";;
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*) unrestricted_access_submenu=""
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esac
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# Authorized users (--users foo,bar)
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if [ -n "${GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS}" ] ; then
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protection_authorized_users="--users ${GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS} "
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fi
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## Probe informations of Root and Boot devices
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# Probe info "Root partition"
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root_device=$(${grub_probe} --target=device /) # Root device
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root_uuid=$(${grub_probe} --device ${root_device} --target="fs_uuid" 2>/dev/null) # UUID of the root device
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root_uuid_subvolume=$(btrfs subvolume show / 2>/dev/null) || print_error "UUID of the root subvolume is not available"; # If UUID of root subvolume is not available, then exit
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root_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<< "$root_uuid_subvolume") # UUID of the root subvolume
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# Probe info "Boot partition"
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boot_device=$(${grub_probe} --target=device ${boot_directory}) # Boot device
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boot_uuid=$(${grub_probe} --device ${boot_device} --target="fs_uuid" 2>/dev/null) # UUID of the boot device
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boot_uuid_subvolume=$(btrfs subvolume show "$boot_directory" 2>/dev/null) || boot_uuid_subvolume=" UUID: $root_uuid_subvolume"; # If boot folder isn't a subvolume, then UUID=root_uuid_subvolume
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boot_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<< "$boot_uuid_subvolume") # UUID of the boot subvolume
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boot_hs=$(${grub_probe} --device ${boot_device} --target="hints_string" 2>/dev/null) # hints string
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boot_fs=$(${grub_probe} --device ${boot_device} --target="fs" 2>/dev/null) # Type filesystem of boot device
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## Parameters passed to the kernel
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kernel_parameters="$GRUB_CMDLINE_LINUX $GRUB_CMDLINE_LINUX_DEFAULT"
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## Mount point location
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grub_btrfs_mount_point=$(mktemp -dt grub-btrfs.XXXXXXXXXX)
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## Class for theme
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CLASS="--class snapshots --class gnu-linux --class gnu --class os"
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## save IFS
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oldIFS=$IFS
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## Detect uuid requirement (lvm,btrfs...)
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check_uuid_required() {
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if [ "x${root_uuid}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
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|| ! test -e "/dev/disk/by-uuid/${root_uuid}" \
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|| ( test -e "${root_device}" && uses_abstraction "${root_device}" lvm ); then
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LINUX_ROOT_DEVICE=${root_device}
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else
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LINUX_ROOT_DEVICE=UUID=${root_uuid}
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fi
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}
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## Detect rootflags
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detect_rootflags()
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{
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local fstabflags=$(grep -oE '^\s*[^#][[:graph:]]+\s+/\s+btrfs\s+[[:graph:]]+' "${grub_btrfs_mount_point}/${snap_dir_name_trim}/etc/fstab" \
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| sed -E 's/^.*[[:space:]]([[:graph:]]+)$/\1/;s/,?subvol(id)?=[^,$]+//g;s/^,//')
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rootflags="rootflags=${fstabflags:+$fstabflags,}${GRUB_BTRFS_ROOTFLAGS:+$GRUB_BTRFS_ROOTFLAGS,}"
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}
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unmount_grub_btrfs_mount_point()
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{
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if [[ -d "$grub_btrfs_mount_point" ]]; then
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local wait=true
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local wait_max=0
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printf "Unmount %s .." "$grub_btrfs_mount_point" >&2;
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while $wait; do
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if grep -qs "$grub_btrfs_mount_point" /proc/mounts; then
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wait_max=$((1+wait_max))
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if umount "$grub_btrfs_mount_point" >/dev/null 2>&1; then
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wait=false # umount successful
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printf " Success\n" >&2;
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elif [[ $wait_max = 10 ]]; then
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printf "\nWarning: Unable to unmount %s in %s\n" "$root_device" "$grub_btrfs_mount_point" >&2;
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break;
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else
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printf "." >&2 ; # output to show that the script is alive
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sleep 2 # wait 2 seconds before retry
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fi
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else
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wait=false # not mounted
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printf " Success\n" >&2;
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fi
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done
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if [[ "$wait" != true ]]; then
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if ! rm -d "$grub_btrfs_mount_point" >/dev/null 2>&1; then
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printf "Unable to delete %s: Device or ressource is busy\n" "$grub_btrfs_mount_point" >&2;
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fi
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fi
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fi
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}
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## Create entry
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entry()
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{
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echo "$@" >> "$grub_directory/grub-btrfs.new"
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}
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## menu entries
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make_menu_entries()
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{
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## \" required for snap,kernels,init,microcode with space in their name
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entry "submenu '${title_menu}' {
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submenu '${title_submenu}' { echo }"
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for k in "${name_kernel[@]}"; do
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[[ ! -f "${boot_dir}"/"${k}" ]] && continue;
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kversion=${k#*"-"}
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for i in "${name_initramfs[@]}"; do
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if [[ "${name_initramfs}" != "x" ]] ; then
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# prefix_i=${i%%"-"*}
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suffix_i=${i#*"-"}
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# alt_suffix_i=${i##*"-"}
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if [ "${kversion}" = "${suffix_i}" ]; then i="${i}";
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elif [ "${kversion}.img" = "${suffix_i}" ]; then i="${i}";
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elif [ "${kversion}-fallback.img" = "${suffix_i}" ]; then i="${i}";
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elif [ "${kversion}.gz" = "${suffix_i}" ]; then i="${i}";
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else continue;
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fi
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for u in "${name_microcode[@]}"; do
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if [[ "${name_microcode}" != "x" ]] ; then
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entry "
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menuentry ' "${k}" & "${i}" & "${u}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid' {"
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else
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entry "
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menuentry ' "${k}" & "${i}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid' {"
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fi
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entry "\
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if [ x\$feature_all_video_module = xy ]; then
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insmod all_video
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fi
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set gfxpayload=keep
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insmod ${boot_fs}
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if [ x\$feature_platform_search_hint = xy ]; then
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search --no-floppy --fs-uuid --set=root ${boot_hs} ${boot_uuid}
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else
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search --no-floppy --fs-uuid --set=root ${boot_uuid}
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fi
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echo 'Loading Snapshot: "${snap_date_trim}" "${snap_dir_name_trim}"'
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echo 'Loading Kernel: "${k}" ...'
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linux \"${boot_dir_root_grub}/"${k}"\" root="${LINUX_ROOT_DEVICE}" ${kernel_parameters} ${rootflags}subvol=\""${snap_dir_name_trim}"\""
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if [[ "${name_microcode}" != "x" ]] ; then
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entry "\
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echo 'Loading Microcode & Initramfs: "${u}" "${i}" ...'
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initrd \"${boot_dir_root_grub}/"${u}"\" \"${boot_dir_root_grub}/"${i}"\""
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else
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entry "\
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echo 'Loading Initramfs: "${i}" ...'
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initrd \"${boot_dir_root_grub}/"${i}"\""
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fi
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entry " }"
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count_warning_menuentries=$((1+count_warning_menuentries))
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done
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else
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for u in "${name_microcode[@]}"; do
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if [[ "${name_microcode}" != "x" ]] ; then
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entry "
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menuentry ' "${k}" & "${u}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid' {"
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else
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entry "
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menuentry ' "${k}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid' {"
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fi
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entry "\
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if [ x\$feature_all_video_module = xy ]; then
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insmod all_video
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fi
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set gfxpayload=keep
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insmod ${boot_fs}
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if [ x\$feature_platform_search_hint = xy ]; then
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search --no-floppy --fs-uuid --set=root ${boot_hs} ${boot_uuid}
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else
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search --no-floppy --fs-uuid --set=root ${boot_uuid}
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fi
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echo 'Loading Snapshot: "${snap_date_trim}" "${snap_dir_name_trim}"'
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echo 'Loading Kernel: "${k}" ...'
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linux \"${boot_dir_root_grub}/"${k}"\" root="${LINUX_ROOT_DEVICE}" ${kernel_parameters} ${rootflags}subvol=\""${snap_dir_name_trim}"\""
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if [[ "${name_microcode}" != "x" ]] ; then
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entry "\
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echo 'Loading Microcode: "${u}" ...'
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initrd \"${boot_dir_root_grub}/"${u}"\""
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fi
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entry " }"
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count_warning_menuentries=$((1+count_warning_menuentries))
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done
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fi
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done
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done
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entry "}"
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}
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## Trim a string from leading and trailing whitespaces
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trim() {
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local var="$*"
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var="${var#"${var%%[![:space:]]*}"}"
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var="${var%"${var##*[![:space:]]}"}"
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echo -n "$var"
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}
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## List of snapshots on filesystem
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snapshot_list()
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{
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local snapper_info="info.xml"
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local timeshift_info="info.json"
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local date_snapshots=()
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local path_snapshots=()
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local type_snapshots=()
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local description_snapshots=()
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IFS=$'\n'
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for snap in $(btrfs subvolume list -sa "${btrfs_subvolume_sort}" /); do # Parse btrfs snapshots
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IFS=$oldIFS
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snap=($snap)
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local path_snapshot=${snap[@]:13:${#snap[@]}}
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if [ "$path_snapshot" = "DELETED" ]; then continue; fi # Discard deleted snapshots
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[[ ${path_snapshot%%"/"*} == "<FS_TREE>" ]] && path_snapshot=${path_snapshot#*"/"} # Remove the "<FS_TREE>" string at the beginning of the path
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# ignore specific path during run "grub-mkconfig"
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if [ -n "${GRUB_BTRFS_IGNORE_SPECIFIC_PATH}" ] ; then
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for isp in "${GRUB_BTRFS_IGNORE_SPECIFIC_PATH[@]}" ; do
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[[ "${path_snapshot}" == "${isp}" ]] && continue 2;
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done
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fi
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if [ -n "${GRUB_BTRFS_IGNORE_PREFIX_PATH}" ] ; then
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for isp in "${GRUB_BTRFS_IGNORE_PREFIX_PATH[@]}" ; do
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[[ "${path_snapshot}" == "${isp}"/* ]] && continue 2;
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||||||
|
done
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||||||
|
fi
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||||||
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[[ ! -d "$grub_btrfs_mount_point/$path_snapshot/boot" ]] && continue; # Discard snapshots without /boot folder
|
||||||
|
|
||||||
|
# Parse Snapper & timeshift informations
|
||||||
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local type_snapshot="N/A"
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||||||
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local description_snapshot="N/A"
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if [[ -s "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$snapper_info" ]] ; then
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type_snapshot=$(awk -F"<|>" 'match($2, /^type/) {print $3}' "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$snapper_info") # search matching string beginning "type"
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||||||
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description_snapshot=$(awk -F"<|>" 'match($2, /^description/) {print $3}' "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$snapper_info") # search matching string beginning "description"
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||||||
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elif [[ -s "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$timeshift_info" ]] ; then
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type_snapshot=$(awk -F" : " 'match($1, /^[ \t]+"tags"/) {gsub(/"|,/,"");print $2}' "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$timeshift_info") # search matching string beginning "tags"
|
||||||
|
description_snapshot=$(awk -F" : " 'match($1, /^[ \t]+"comments"/) {gsub(/"|,/,"");print $2}' "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$timeshift_info") # search matching string beginning "comments"
|
||||||
|
fi
|
||||||
|
[[ -z "$type_snapshot" ]] && type_snapshot=("N/A")
|
||||||
|
[[ -z "$description_snapshot" ]] && description_snapshot=("N/A")
|
||||||
|
|
||||||
|
# ignore specific {type,tag,description} of snapshot during run "grub-mkconfig"
|
||||||
|
if [ -n "${GRUB_BTRFS_IGNORE_SNAPSHOT_TYPE}" ] ; then
|
||||||
|
for ist in "${GRUB_BTRFS_IGNORE_SNAPSHOT_TYPE[@]}" ; do
|
||||||
|
[[ "${type_snapshot}" == "${ist}" ]] && continue 2;
|
||||||
|
done
|
||||||
|
fi
|
||||||
|
if [ -n "${GRUB_BTRFS_IGNORE_SNAPSHOT_DESCRIPTION}" ] ; then
|
||||||
|
for isd in "${GRUB_BTRFS_IGNORE_SNAPSHOT_DESCRIPTION[@]}" ; do
|
||||||
|
[[ "${description_snapshot}" == "${isd}" ]] && continue 2;
|
||||||
|
done
|
||||||
|
fi
|
||||||
|
|
||||||
|
local date_snapshot="${snap[@]:10:2}"
|
||||||
|
date_snapshots+=("$date_snapshot")
|
||||||
|
path_snapshots+=("$path_snapshot")
|
||||||
|
type_snapshots+=("$type_snapshot")
|
||||||
|
description_snapshots+=("$description_snapshot")
|
||||||
|
done
|
||||||
|
|
||||||
|
# Find max length of a snapshot date, needed for pretty formatting
|
||||||
|
local max_date_length=0
|
||||||
|
for i in "${date_snapshots[@]}"; do
|
||||||
|
local length="${#i}"
|
||||||
|
[[ "$length" -gt "$max_date_length" ]] && max_date_length=$length
|
||||||
|
done
|
||||||
|
|
||||||
|
# Find max length of a snapshot name, needed for pretty formatting
|
||||||
|
local max_path_length=0
|
||||||
|
for i in "${path_snapshots[@]}"; do
|
||||||
|
local length="${#i}"
|
||||||
|
[[ "$length" -gt "$max_path_length" ]] && max_path_length=$length
|
||||||
|
done
|
||||||
|
|
||||||
|
# Find max length of a snapshot type, needed for pretty formatting
|
||||||
|
local max_type_length=0
|
||||||
|
for i in "${type_snapshots[@]}"; do
|
||||||
|
local length="${#i}"
|
||||||
|
[[ "$length" -gt "$max_type_length" ]] && max_type_length=$length
|
||||||
|
done
|
||||||
|
|
||||||
|
# Find max length of a snapshot description, needed for pretty formatting
|
||||||
|
local max_description_length=0
|
||||||
|
for i in "${description_snapshots[@]}"; do
|
||||||
|
local length="${#i}"
|
||||||
|
[[ "$length" -gt "$max_description_length" ]] && max_description_length=$length
|
||||||
|
done
|
||||||
|
|
||||||
|
for i in "${!path_snapshots[@]}"; do
|
||||||
|
printf -v entry "%-${max_date_length}s | %-${max_path_length}s | %-${max_type_length}s | %-${max_description_length}s |" "${date_snapshots[$i]}" "${path_snapshots[$i]}" "${type_snapshots[$i]}" "${description_snapshots[$i]}"
|
||||||
|
echo "$entry"
|
||||||
|
done
|
||||||
|
|
||||||
|
IFS=$oldIFS
|
||||||
|
}
|
||||||
|
|
||||||
|
## Parse snapshots in snapshot_list
|
||||||
|
parse_snapshot_list()
|
||||||
|
{
|
||||||
|
snap_date=" $(echo "$item" | cut -d'|' -f1)" # column_1, first space is necessary for pretty formatting
|
||||||
|
snap_date_trim="$(trim "$snap_date")"
|
||||||
|
|
||||||
|
snap_dir_name="$(echo "$item" | cut -d'|' -f2)" # column_2
|
||||||
|
snap_dir_name_trim="$(trim "$snap_dir_name")"
|
||||||
|
snap_snapshot="$snap_dir_name" # Used by "title_format" function
|
||||||
|
|
||||||
|
snap_type="$(echo "$item" | cut -d'|' -f3)" # column_3
|
||||||
|
|
||||||
|
snap_description="$(echo "$item" | cut -d'|' -f4)" # column_4
|
||||||
|
}
|
||||||
|
|
||||||
|
## Detect kernels in "boot_directory"
|
||||||
|
detect_kernel()
|
||||||
|
{
|
||||||
|
list_kernel=()
|
||||||
|
# Original kernel (auto-detect)
|
||||||
|
for okernel in "${boot_dir}"/vmlinuz-* \
|
||||||
|
"${boot_dir}"/vmlinux-* \
|
||||||
|
"${boot_dir}"/kernel-* ; do
|
||||||
|
[[ ! -f "${okernel}" ]] && continue;
|
||||||
|
list_kernel+=("$okernel")
|
||||||
|
done
|
||||||
|
|
||||||
|
# Custom name kernel in "GRUB_BTRFS_NKERNEL"
|
||||||
|
if [ -n "${GRUB_BTRFS_NKERNEL}" ] ; then
|
||||||
|
for ckernel in "${boot_dir}/${GRUB_BTRFS_NKERNEL[@]}" ; do
|
||||||
|
[[ ! -f "${ckernel}" ]] && continue;
|
||||||
|
list_kernel+=("$ckernel")
|
||||||
|
done
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
## Detect initramfs in "boot_directory"
|
||||||
|
detect_initramfs()
|
||||||
|
{
|
||||||
|
list_initramfs=()
|
||||||
|
# Original initramfs (auto-detect)
|
||||||
|
for oinitramfs in "${boot_dir}"/initrd.img-* \
|
||||||
|
"${boot_dir}"/initramfs-* \
|
||||||
|
"${boot_dir}"/initrd-* ; do
|
||||||
|
[[ ! -f "${oinitramfs}" ]] && continue;
|
||||||
|
list_initramfs+=("$oinitramfs")
|
||||||
|
done
|
||||||
|
|
||||||
|
# Custom name initramfs in "GRUB_BTRFS_NINIT"
|
||||||
|
if [ -n "${GRUB_BTRFS_NINIT}" ] ; then
|
||||||
|
for cinitramfs in "${boot_dir}/${GRUB_BTRFS_NINIT[@]}" ; do
|
||||||
|
[[ ! -f "${cinitramfs}" ]] && continue;
|
||||||
|
list_initramfs+=("$cinitramfs")
|
||||||
|
done
|
||||||
|
fi
|
||||||
|
if [ -z "${list_initramfs}" ]; then list_initramfs=(x); fi
|
||||||
|
}
|
||||||
|
|
||||||
|
## Detect microcode in "boot_directory"
|
||||||
|
detect_microcode()
|
||||||
|
{
|
||||||
|
list_ucode=()
|
||||||
|
# Original intel/amd microcode (auto-detect)
|
||||||
|
# See "https://www.gnu.org/software/grub/manual/grub/html_node/Simple-configuration.html"
|
||||||
|
for oiucode in "${boot_dir}"/intel-uc.img \
|
||||||
|
"${boot_dir}"/intel-ucode.img \
|
||||||
|
"${boot_dir}"/amd-uc.img \
|
||||||
|
"${boot_dir}"/amd-ucode.img \
|
||||||
|
"${boot_dir}"/early_ucode.cpio \
|
||||||
|
"${boot_dir}"/microcode.cpio; do
|
||||||
|
[[ ! -f "${oiucode}" ]] && continue;
|
||||||
|
list_ucode+=("$oiucode")
|
||||||
|
done
|
||||||
|
|
||||||
|
# Custom name microcode in "GRUB_BTRFS_CUSTOM_MICROCODE"
|
||||||
|
if [ -n "${GRUB_BTRFS_CUSTOM_MICROCODE}" ] ; then
|
||||||
|
for cucode in "${boot_dir}/${GRUB_BTRFS_CUSTOM_MICROCODE[@]}" ; do
|
||||||
|
[[ ! -f "${cucode}" ]] && continue
|
||||||
|
list_ucode+=("$cucode")
|
||||||
|
done
|
||||||
|
fi
|
||||||
|
if [ -z "${list_ucode}" ]; then list_ucode=(x); fi
|
||||||
|
}
|
||||||
|
|
||||||
|
## Title format in Grub-menu
|
||||||
|
declare -A title_column=( [date]=Date [snapshot]=Snapshot [type]=Type [description]=Description ) # Column title that appears in the header
|
||||||
|
title_format()
|
||||||
|
{
|
||||||
|
title_menu="|" # "|" is for visuals only
|
||||||
|
title_submenu="|" # "|" is for visuals only
|
||||||
|
[[ -z "${GRUB_BTRFS_TITLE_FORMAT}" ]] && GRUB_BTRFS_TITLE_FORMAT=("date" "snapshot" "type" "description"); # Default parameters
|
||||||
|
for key in "${!GRUB_BTRFS_TITLE_FORMAT[@]}"; do
|
||||||
|
[[ ${GRUB_BTRFS_TITLE_FORMAT[$key],,} != "${title_column[${GRUB_BTRFS_TITLE_FORMAT[$key]}],,}" ]] && continue; # User used wrong parameter
|
||||||
|
declare -n var="snap_${GRUB_BTRFS_TITLE_FORMAT[$key],,}" # $var is a indirect variable
|
||||||
|
if [[ "${#var}" -lt "${#title_column[${GRUB_BTRFS_TITLE_FORMAT[$key],,}]}" ]]; then # Add extra spaces if length of $var is smaller than the length of column, needed for pretty formatting
|
||||||
|
printf -v var "%-$(((${#title_column[${GRUB_BTRFS_TITLE_FORMAT[$key],,}]}-${#var})+${#var}))s" "${var}";
|
||||||
|
fi
|
||||||
|
title_menu+="${var}|"
|
||||||
|
title_submenu+=" $(trim "${var}") |"
|
||||||
|
done
|
||||||
|
}
|
||||||
|
# Adds a header to the grub-btrfs.cfg file
|
||||||
|
header_menu()
|
||||||
|
{
|
||||||
|
local header_entry=""
|
||||||
|
[[ -z "${GRUB_BTRFS_TITLE_FORMAT}" ]] && GRUB_BTRFS_TITLE_FORMAT=("date" "snapshot" "type" "description"); # Default parameters
|
||||||
|
for key in "${!GRUB_BTRFS_TITLE_FORMAT[@]}"; do
|
||||||
|
[[ ${GRUB_BTRFS_TITLE_FORMAT[$key],,} != "${title_column[${GRUB_BTRFS_TITLE_FORMAT[$key]}],,}" ]] && continue; # User used wrong parameter
|
||||||
|
declare -n var="snap_${GRUB_BTRFS_TITLE_FORMAT[$key],,}" # $var is a indirect variable
|
||||||
|
# Center alignment, needed for pretty formatting
|
||||||
|
local lenght_title_column_left=$((${#var}-${#title_column[${GRUB_BTRFS_TITLE_FORMAT[$key],,}]}))
|
||||||
|
((lenght_title_column_left%2)) && lenght_title_column_left=$((lenght_title_column_left+1)); # If the difference is an odd number, add an extra space
|
||||||
|
lenght_title_column_left=$((((lenght_title_column_left/2)+${#title_column[${GRUB_BTRFS_TITLE_FORMAT[$key],,}]})));
|
||||||
|
local lenght_title_column_right=$(((${#var}-lenght_title_column_left)+1)) #+1 is necessary for extra "|" character
|
||||||
|
header_entry+=$(printf "%${lenght_title_column_left}s%${lenght_title_column_right}s" "${title_column[${GRUB_BTRFS_TITLE_FORMAT[$key],,}]}" "|") # Final "|" is for visuals only
|
||||||
|
done
|
||||||
|
sed -i "1imenuentry '|${header_entry}' { echo }" "$grub_directory/grub-btrfs.new" # First "|" is for visuals only
|
||||||
|
}
|
||||||
|
|
||||||
|
## List of kernels, initramfs and microcode in snapshots
|
||||||
|
boot_bounded()
|
||||||
|
{
|
||||||
|
# Initialize menu entries
|
||||||
|
IFS=$'\n'
|
||||||
|
for item in $(snapshot_list); do
|
||||||
|
[[ ${limit_snap_show} -le 0 ]] && break; # fix: limit_snap_show=0
|
||||||
|
IFS=$oldIFS
|
||||||
|
parse_snapshot_list
|
||||||
|
boot_dir="$grub_btrfs_mount_point/$snap_dir_name_trim$boot_directory"
|
||||||
|
detect_kernel
|
||||||
|
if [ -z "${list_kernel}" ]; then continue; fi
|
||||||
|
name_kernel=("${list_kernel[@]##*"/"}")
|
||||||
|
detect_initramfs
|
||||||
|
name_initramfs=("${list_initramfs[@]##*"/"}")
|
||||||
|
detect_microcode
|
||||||
|
name_microcode=("${list_ucode[@]##*"/"}")
|
||||||
|
detect_rootflags
|
||||||
|
title_format
|
||||||
|
boot_dir_root_grub="$(make_system_path_relative_to_its_root "${boot_dir}")" # convert "boot_directory" to root of GRUB (e.g /boot become /)
|
||||||
|
make_menu_entries
|
||||||
|
# show snapshot found during run "grub-mkconfig"
|
||||||
|
if [[ "${GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND:-"true"}" = "true" ]]; then
|
||||||
|
printf "Found snapshot: %s\n" "$item" >&2 ;
|
||||||
|
fi
|
||||||
|
# Limit snapshots found during run "grub-mkconfig"
|
||||||
|
count_limit_snap=$((1+count_limit_snap))
|
||||||
|
[[ $count_limit_snap -ge $limit_snap_show ]] && break;
|
||||||
|
done
|
||||||
|
IFS=$oldIFS
|
||||||
|
}
|
||||||
|
|
||||||
|
boot_separate()
|
||||||
|
{
|
||||||
|
boot_dir="${boot_directory}"
|
||||||
|
boot_dir_root_grub="$(make_system_path_relative_to_its_root "${boot_dir}")" # convert "boot_directory" to root of GRUB (e.g /boot become /)
|
||||||
|
detect_kernel
|
||||||
|
if [ -z "${list_kernel}" ]; then print_error "Kernels not found."; fi
|
||||||
|
name_kernel=("${list_kernel[@]##*"/"}")
|
||||||
|
detect_initramfs
|
||||||
|
name_initramfs=("${list_initramfs[@]##*"/"}")
|
||||||
|
detect_microcode
|
||||||
|
name_microcode=("${list_ucode[@]##*"/"}")
|
||||||
|
|
||||||
|
# Initialize menu entries
|
||||||
|
IFS=$'\n'
|
||||||
|
for item in $(snapshot_list); do
|
||||||
|
[[ ${limit_snap_show} -le 0 ]] && break; # fix: limit_snap_show=0
|
||||||
|
IFS=$oldIFS
|
||||||
|
parse_snapshot_list
|
||||||
|
detect_rootflags
|
||||||
|
title_format
|
||||||
|
make_menu_entries
|
||||||
|
# show snapshot found during run "grub-mkconfig"
|
||||||
|
if [[ "${GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND:-"true"}" = "true" ]]; then
|
||||||
|
printf "Found snapshot: %s\n" "$item" >&2 ;
|
||||||
|
fi
|
||||||
|
# Limit snapshots found during run "grub-mkconfig"
|
||||||
|
count_limit_snap=$((1+count_limit_snap))
|
||||||
|
[[ $count_limit_snap -ge $limit_snap_show ]] && break;
|
||||||
|
done
|
||||||
|
IFS=$oldIFS
|
||||||
|
}
|
||||||
|
|
||||||
|
rm -f "$grub_directory/grub-btrfs.new"
|
||||||
|
> "$grub_directory/grub-btrfs.new" # Create a "grub-btrfs.new" file in "grub_directory"
|
||||||
|
# Create mount point then mounting
|
||||||
|
[[ ! -d $grub_btrfs_mount_point ]] && mkdir -p "$grub_btrfs_mount_point"
|
||||||
|
mount -o ro,subvolid=5 /dev/disk/by-uuid/"$root_uuid" "$grub_btrfs_mount_point/"
|
||||||
|
trap "unmount_grub_btrfs_mount_point" EXIT # unmounting mount point on EXIT signal
|
||||||
|
count_warning_menuentries=0 # Count menuentries
|
||||||
|
count_limit_snap=0 # Count snapshots
|
||||||
|
check_uuid_required
|
||||||
|
# Detects if /boot is a separate partition
|
||||||
|
[[ "${GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION,,}" == "true" ]] && printf "Override boot partition detection : enable \n" >&2 && boot_separate;
|
||||||
|
if [[ "$root_uuid" != "$boot_uuid" ]] || [[ "$root_uuid_subvolume" != "$boot_uuid_subvolume" ]]; then boot_separate ; else boot_bounded ; fi
|
||||||
|
# Show warn, menuentries exceeds 250 entries
|
||||||
|
[[ $count_warning_menuentries -ge 250 ]] && printf "Generated %s total GRUB entries. You might experience issues loading snapshots menu in GRUB.\n" "${count_warning_menuentries}" >&2 ;
|
||||||
|
# Show total found snapshots
|
||||||
|
if [[ "${GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND:-"true"}" = "true" && -n "${count_limit_snap}" && "${count_limit_snap}" != "0" ]]; then
|
||||||
|
printf "Found %s snapshot(s)\n" "${count_limit_snap}" >&2 ;
|
||||||
|
fi
|
||||||
|
# if no snapshot found, exit
|
||||||
|
if [[ "${count_limit_snap}" = "0" || -z "${count_limit_snap}" ]]; then
|
||||||
|
print_error "No snapshots found."
|
||||||
|
fi
|
||||||
|
# Make a submenu in GRUB (grub.cfg) and move "grub-btrfs.new" to "grub-btrfs.cfg"
|
||||||
|
header_menu
|
||||||
|
if "${bindir}/${GRUB_BTRFS_SCRIPT_CHECK:-grub-script-check}" "$grub_directory/grub-btrfs.new"; then
|
||||||
|
cat "$grub_directory/grub-btrfs.new" > "$grub_directory/grub-btrfs.cfg"
|
||||||
|
rm -f "$grub_directory/grub-btrfs.new"
|
||||||
|
cat << EOF
|
||||||
|
submenu '${submenuname}' ${protection_authorized_users}${unrestricted_access_submenu}{
|
||||||
|
configfile "\${prefix}/grub-btrfs.cfg"
|
||||||
|
}
|
||||||
|
EOF
|
||||||
|
else
|
||||||
|
print_error "Syntax errors are detected in generated grub-btrfs.cfg file."
|
||||||
|
fi
|
||||||
86
Makefile
Normal file
86
Makefile
Normal file
@@ -0,0 +1,86 @@
|
|||||||
|
PKGNAME ?= grub-btrfs
|
||||||
|
PREFIX ?= /usr
|
||||||
|
|
||||||
|
INITCPIO ?= false
|
||||||
|
SYSTEMD ?= true
|
||||||
|
OPENRC ?= false
|
||||||
|
|
||||||
|
SHARE_DIR = $(DESTDIR)$(PREFIX)/share
|
||||||
|
LIB_DIR = $(DESTDIR)$(PREFIX)/lib
|
||||||
|
BIN_DIR = $(DESTDIR)$(PREFIX)/bin
|
||||||
|
|
||||||
|
.PHONY: install uninstall help
|
||||||
|
|
||||||
|
install:
|
||||||
|
@if test "$(shell id -u)" != 0; then \
|
||||||
|
echo "You are not root, run this target as root please."; \
|
||||||
|
exit 1; \
|
||||||
|
fi
|
||||||
|
@install -Dm755 -t "$(DESTDIR)/etc/grub.d/" 41_snapshots-btrfs
|
||||||
|
@install -Dm644 -t "$(DESTDIR)/etc/default/grub-btrfs/" config
|
||||||
|
@# Systemd init system
|
||||||
|
@if test "$(SYSTEMD)" = true; then \
|
||||||
|
install -Dm644 -t "$(LIB_DIR)/systemd/system/" grub-btrfs.path; \
|
||||||
|
install -Dm644 -t "$(LIB_DIR)/systemd/system/" grub-btrfs.service; \
|
||||||
|
fi
|
||||||
|
@# OpenRC init system
|
||||||
|
@if test "$(OPENRC)" = true; then \
|
||||||
|
install -Dm744 -t "$(BIN_DIR)/" grub-btrfs-openrc; \
|
||||||
|
install -Dm744 -t "$(DESTDIR)/etc/init.d/" grub-btrfsd; \
|
||||||
|
fi
|
||||||
|
@# Arch Linux like distros only :
|
||||||
|
@if test "$(INITCPIO)" = true; then \
|
||||||
|
install -Dm644 "initramfs/Arch Linux/overlay_snap_ro-install" "$(LIB_DIR)/initcpio/install/grub-btrfs-overlayfs"; \
|
||||||
|
install -Dm644 "initramfs/Arch Linux/overlay_snap_ro-hook" "$(LIB_DIR)/initcpio/hooks/grub-btrfs-overlayfs"; \
|
||||||
|
fi
|
||||||
|
@install -Dm644 -t "$(SHARE_DIR)/licenses/$(PKGNAME)/" LICENSE
|
||||||
|
@install -Dm644 -t "$(SHARE_DIR)/doc/$(PKGNAME)/" README.md
|
||||||
|
@install -Dm644 "initramfs/readme.md" "$(SHARE_DIR)/doc/$(PKGNAME)/initramfs-overlayfs.md"
|
||||||
|
|
||||||
|
uninstall:
|
||||||
|
@if test "$(shell id -u)" != 0; then \
|
||||||
|
echo "You are not root, run this target as root please."; \
|
||||||
|
exit 1; \
|
||||||
|
fi
|
||||||
|
@grub_dirname="$$(grep -oP '^[[:space:]]*GRUB_BTRFS_GRUB_DIRNAME=\K.*' "$(DESTDIR)/etc/default/grub-btrfs/config" | sed "s|\s*#.*||;s|(\s*\(.\+\)\s*)|\1|;s|['\"]||g")"; \
|
||||||
|
rm -f "$${grub_dirname:-/boot/grub}/grub-btrfs.cfg"
|
||||||
|
@rm -f "$(DESTDIR)/etc/default/grub-btrfs/config"
|
||||||
|
@rm -f "$(DESTDIR)/etc/grub.d/41_snapshots-btrfs"
|
||||||
|
@rm -f "$(LIB_DIR)/systemd/system/grub-btrfs.path"
|
||||||
|
@rm -f "$(LIB_DIR)/systemd/system/grub-btrfs.service"
|
||||||
|
@rm -f "$(BIN_DIR)/grub-btrfs-openrc;"
|
||||||
|
@rm -f "$(DESTDIR)/etc/init.d/grub-btrfsd;"
|
||||||
|
@rm -f "$(LIB_DIR)/initcpio/install/grub-btrfs-overlayfs"
|
||||||
|
@rm -f "$(LIB_DIR)/initcpio/hooks/grub-btrfs-overlayfs"
|
||||||
|
@# Arch Linux UNlike distros only :
|
||||||
|
@if test "$(INITCPIO)" != true && test -d "$(LIB_DIR)/initcpio"; then \
|
||||||
|
rmdir --ignore-fail-on-non-empty "$(LIB_DIR)/initcpio/install" || :; \
|
||||||
|
rmdir --ignore-fail-on-non-empty "$(LIB_DIR)/initcpio/hooks" || :; \
|
||||||
|
rmdir --ignore-fail-on-non-empty "$(LIB_DIR)/initcpio" || :; \
|
||||||
|
fi
|
||||||
|
@rm -f "$(SHARE_DIR)/doc/$(PKGNAME)/README.md"
|
||||||
|
@rm -f "$(SHARE_DIR)/doc/$(PKGNAME)/initramfs-overlayfs.md"
|
||||||
|
@rm -f "$(SHARE_DIR)/licenses/$(PKGNAME)/LICENSE"
|
||||||
|
@rmdir --ignore-fail-on-non-empty "$(SHARE_DIR)/doc/$(PKGNAME)/" || :
|
||||||
|
@rmdir --ignore-fail-on-non-empty "$(SHARE_DIR)/licenses/$(PKGNAME)/" || :
|
||||||
|
@rmdir --ignore-fail-on-non-empty "$(DESTDIR)/etc/default/grub-btrfs" || :
|
||||||
|
|
||||||
|
help:
|
||||||
|
@echo
|
||||||
|
@echo "Usage: $(MAKE) [ <parameter>=<value> ... ] [ <action> ]"
|
||||||
|
@echo
|
||||||
|
@echo " actions: install"
|
||||||
|
@echo " uninstall"
|
||||||
|
@echo " help"
|
||||||
|
@echo
|
||||||
|
@echo " parameter | type | description | defaults"
|
||||||
|
@echo " ----------+------+--------------------------------+----------------------------"
|
||||||
|
@echo " DESTDIR | path | install destination | <unset>"
|
||||||
|
@echo " PREFIX | path | system tree prefix | '/usr'"
|
||||||
|
@echo " SHARE_DIR | path | shared data location | '\$$(DESTDIR)\$$(PREFIX)/share'"
|
||||||
|
@echo " LIB_DIR | path | system libraries location | '\$$(DESTDIR)\$$(PREFIX)/lib'"
|
||||||
|
@echo " PKGNAME | name | name of the ditributed package | 'grub-btrfs'"
|
||||||
|
@echo " INITCPIO | bool | include mkinitcpio hook | false"
|
||||||
|
@echo " SYSTEMD | bool | include unit files | true"
|
||||||
|
@echo " OPENRC | bool | include OpenRc daemon | false"
|
||||||
|
@echo
|
||||||
132
config
Normal file
132
config
Normal file
@@ -0,0 +1,132 @@
|
|||||||
|
#!/usr/bin/env bash
|
||||||
|
|
||||||
|
# Disable grub-btrfs.
|
||||||
|
# Default: "false"
|
||||||
|
#GRUB_BTRFS_DISABLE="true"
|
||||||
|
|
||||||
|
# Name appearing in the Grub menu.
|
||||||
|
# Default: "Use distribution information from /etc/os-release."
|
||||||
|
#GRUB_BTRFS_SUBMENUNAME="Arch Linux snapshots"
|
||||||
|
|
||||||
|
# Custom title.
|
||||||
|
# Shows/Hides "date" "snapshot" "type" "description" in the Grub menu, custom order available.
|
||||||
|
# Default: ("date" "snapshot" "type" "description")
|
||||||
|
#GRUB_BTRFS_TITLE_FORMAT=("date" "snapshot" "type" "description")
|
||||||
|
|
||||||
|
# Limit the number of snapshots populated in the GRUB menu.
|
||||||
|
# Default: "50"
|
||||||
|
#GRUB_BTRFS_LIMIT="50"
|
||||||
|
|
||||||
|
# Sort the found subvolumes by "ogeneration" or "generation" or "path" or "rootid".
|
||||||
|
# # See Sorting section to https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume#SUBCOMMAND
|
||||||
|
# "-rootid" means list snapshot by new ones first.
|
||||||
|
# Default: "-rootid"
|
||||||
|
#GRUB_BTRFS_SUBVOLUME_SORT="+ogen,-gen,path,rootid"
|
||||||
|
|
||||||
|
# Show snapshots found during run "grub-mkconfig"
|
||||||
|
# Default: "true"
|
||||||
|
#GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND="false"
|
||||||
|
|
||||||
|
# Show Total of snapshots found during run "grub-mkconfig"
|
||||||
|
# Default: "true"
|
||||||
|
#GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND="true"
|
||||||
|
|
||||||
|
# By default, "grub-btrfs" automatically detects most existing kernels.
|
||||||
|
# If you have one or more custom kernels, you can add them here.
|
||||||
|
# Default: ("")
|
||||||
|
#GRUB_BTRFS_NKERNEL=("kernel-custom" "vmlinux-custom")
|
||||||
|
|
||||||
|
# By default, "grub-btrfs" automatically detects most existing initramfs.
|
||||||
|
# If you have one or more custom initramfs, you can add them here.
|
||||||
|
# Default: ("")
|
||||||
|
#GRUB_BTRFS_NINIT=("initramfs-custom.img" "initrd-custom.img" "otherinit-custom.gz")
|
||||||
|
|
||||||
|
# By default, "grub-btrfs" automatically detects most existing microcodes.
|
||||||
|
# If you have one or more custom microcodes, you can add them here.
|
||||||
|
# Default: ("")
|
||||||
|
#GRUB_BTRFS_CUSTOM_MICROCODE=("custom-ucode.img" "custom-uc.img "custom_ucode.cpio")
|
||||||
|
|
||||||
|
# Comma seperated mount options to be used when booting a snapshot.
|
||||||
|
# They can be defined here as well as in the "/" line inside the respective snapshots'
|
||||||
|
# "/etc/fstab" files. Mount options found in both places are combined, and this variable
|
||||||
|
# takes priority over `fstab` entries.
|
||||||
|
# NB: Do NOT include "subvol=..." or "subvolid=..." here.
|
||||||
|
# Default: ""
|
||||||
|
#GRUB_BTRFS_ROOTFLAGS="space_cache,commit=10,norecovery"
|
||||||
|
|
||||||
|
# Ignore specific path during run "grub-mkconfig".
|
||||||
|
# Only exact paths are ignored.
|
||||||
|
# e.g : if `specific path` = @, only `@` snapshot will be ignored.
|
||||||
|
# Default: ("@")
|
||||||
|
GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("@")
|
||||||
|
|
||||||
|
# Ignore prefix path during run "grub-mkconfig".
|
||||||
|
# Any path starting with the specified string will be ignored.
|
||||||
|
# e.g : if `prefix path` = @, all snapshots beginning with "@/..." will be ignored.
|
||||||
|
# Default: ("var/lib/docker" "@var/lib/docker" "@/var/lib/docker")
|
||||||
|
GRUB_BTRFS_IGNORE_PREFIX_PATH=("var/lib/docker" "@var/lib/docker" "@/var/lib/docker")
|
||||||
|
|
||||||
|
# Ignore specific type/tag of snapshot during run "grub-mkconfig".
|
||||||
|
# For snapper:
|
||||||
|
# Type = single, pre, post.
|
||||||
|
# For Timeshift:
|
||||||
|
# Tag = boot, ondemand, hourly, daily, weekly, monthly.
|
||||||
|
# Default: ("")
|
||||||
|
#GRUB_BTRFS_IGNORE_SNAPSHOT_TYPE=("")
|
||||||
|
|
||||||
|
# Ignore specific description of snapshot during run "grub-mkconfig".
|
||||||
|
# e.g: timeline
|
||||||
|
# Default: ("")
|
||||||
|
#GRUB_BTRFS_IGNORE_SNAPSHOT_DESCRIPTION=("")
|
||||||
|
|
||||||
|
# By default "grub-btrfs" automatically detects your boot partition,
|
||||||
|
# either located at the system root or on a separate partition or in a subvolume,
|
||||||
|
# Change to "true" if your boot partition isn't detected as separate.
|
||||||
|
# Default: "false"
|
||||||
|
#GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION="true"
|
||||||
|
|
||||||
|
# Location of the folder containing the "grub.cfg" file.
|
||||||
|
# Use by grub-btrfs to save the file "grub-btrfs.cfg".
|
||||||
|
# Might be grub2 on some systems.
|
||||||
|
# For example, on Fedora with EFI : "/boot/efi/EFI/fedora"
|
||||||
|
# Default: "/boot/grub"
|
||||||
|
#GRUB_BTRFS_GRUB_DIRNAME="/boot/grub2"
|
||||||
|
|
||||||
|
# Location of kernels/initramfs/microcode.
|
||||||
|
# Use by "grub-btrfs" to detect the boot partition and the location of kernels/initrafms/microcodes.
|
||||||
|
# Default: "/boot"
|
||||||
|
#GRUB_BTRFS_BOOT_DIRNAME="/boot"
|
||||||
|
|
||||||
|
# Name/path of grub-mkconfig command, use by "grub-btrfs.service"
|
||||||
|
# Might be 'grub2-mkconfig' on some systems (Fedora ...)
|
||||||
|
# Default paths are /sbin:/bin:/usr/sbin:/usr/bin,
|
||||||
|
# if your path is missing, report it on the upstream project.
|
||||||
|
# For example, on Fedora : "/sbin/grub2-mkconfig"
|
||||||
|
# You can use only name or full path.
|
||||||
|
# Default: grub-mkconfig
|
||||||
|
#GRUB_BTRFS_MKCONFIG=/usr/bin/grub2-mkconfig
|
||||||
|
|
||||||
|
# Name of grub-script-check command, use by "grub-btrfs"
|
||||||
|
# Might be 'grub2-script-check' on some systems (Fedora ...)
|
||||||
|
# For example, on Fedora : "grub2-script-check"
|
||||||
|
# Default: grub-script-check
|
||||||
|
#GRUB_BTRFS_SCRIPT_CHECK=grub2-script-check
|
||||||
|
|
||||||
|
# Path of grub-mkconfig_lib file, use by "grub-btrfs"
|
||||||
|
# Might be '/usr/share/grub2/grub-mkconfig_lib' on some systems (Opensuse ...)
|
||||||
|
# Default: /usr/share/grub/grub-mkconfig_lib
|
||||||
|
#GRUB_BTRFS_MKCONFIG_LIB=/usr/share/grub2/grub-mkconfig_lib
|
||||||
|
|
||||||
|
# Password protection management for submenu,snapshots
|
||||||
|
# Refer to the Grub documentation https://www.gnu.org/software/grub/manual/grub/grub.html#Authentication-and-authorisation
|
||||||
|
# and this comment https://github.com/Antynea/grub-btrfs/issues/95#issuecomment-682295660
|
||||||
|
#
|
||||||
|
# Add authorized usernames separate by comma (foo,bar)
|
||||||
|
# When Grub's password protection is enabled, the superuser is authorized by default, it isn't necessary to add it
|
||||||
|
# Default: ""
|
||||||
|
#GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS="foo,bar"
|
||||||
|
#
|
||||||
|
# Disable authentication support for submenu of Grub-btrfs only (--unrestricted)
|
||||||
|
# doesn't work if GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS isn't empty
|
||||||
|
# Default: "false"
|
||||||
|
#GRUB_BTRFS_DISABLE_PROTECTION_SUBMENU="true"
|
||||||
44
debian/changelog
vendored
Normal file
44
debian/changelog
vendored
Normal file
@@ -0,0 +1,44 @@
|
|||||||
|
grub-btrfs (4.11-1~1rakuos2) UNRELEASED; urgency=medium
|
||||||
|
|
||||||
|
* Build for RakuOS
|
||||||
|
|
||||||
|
-- Tohur <tohur@Josh-PC> Sat, 08 Nov 2025 14:17:54 -0700
|
||||||
|
|
||||||
|
grub-btrfs (4.11-1~1siduction1) unstable; urgency=medium
|
||||||
|
|
||||||
|
* Non-maintainer upload.
|
||||||
|
* rebuild for siduction
|
||||||
|
|
||||||
|
-- Torsten Wohlfarth <towo@siduction.org> Mon, 06 Jan 2025 16:44:38 +0100
|
||||||
|
|
||||||
|
grub-btrfs (4.11-0kali3) kali-dev; urgency=medium
|
||||||
|
|
||||||
|
[ Kali Janitor ]
|
||||||
|
* Set upstream metadata fields: Repository-Browse.
|
||||||
|
* Update standards version to 4.6.1, no changes needed.
|
||||||
|
* Add ITP bugs in 4.11-0kali1.
|
||||||
|
* Set upstream metadata fields: Repository.
|
||||||
|
* Set upstream metadata fields: Bug-Database, Bug-Submit.
|
||||||
|
* Update standards version to 4.6.2, no changes needed.
|
||||||
|
|
||||||
|
[ Steev Klimaszewski ]
|
||||||
|
* ci: Disable piuparts since the install always fails in a container.
|
||||||
|
|
||||||
|
[ Arnaud Rebillout ]
|
||||||
|
* Drop comments and useless boilerplate in maintscripts
|
||||||
|
* Ensure update-grub is installed before using it (thx ak-li1)
|
||||||
|
* Update control file
|
||||||
|
|
||||||
|
-- Arnaud Rebillout <arnaudr@kali.org> Mon, 06 Jan 2025 09:45:00 +0700
|
||||||
|
|
||||||
|
grub-btrfs (4.11-0kali2) kali-dev; urgency=medium
|
||||||
|
|
||||||
|
* Depend on grub2-common not grub-common
|
||||||
|
|
||||||
|
-- Steev Klimaszewski <steev@kali.org> Tue, 01 Nov 2022 23:19:46 -0500
|
||||||
|
|
||||||
|
grub-btrfs (4.11-0kali1) kali-dev; urgency=medium
|
||||||
|
|
||||||
|
* Initial release. Closes: #941627
|
||||||
|
|
||||||
|
-- Carsten Boeving <re4son@kali.org> Fri, 04 Feb 2022 17:55:12 +0700
|
||||||
18
debian/control
vendored
Normal file
18
debian/control
vendored
Normal file
@@ -0,0 +1,18 @@
|
|||||||
|
Source: grub-btrfs
|
||||||
|
Section: utils
|
||||||
|
Priority: optional
|
||||||
|
Maintainer: Kali Developers <devel@kali.org>
|
||||||
|
Uploaders: Carsten Boeving <re4son@kali.org>, Arnaud Rebillout <arnaudr@kali.org>
|
||||||
|
Rules-Requires-Root: no
|
||||||
|
Build-Depends: debhelper-compat (= 13)
|
||||||
|
Standards-Version: 4.7.0
|
||||||
|
Homepage: https://github.com/Antynea/grub-btrfs
|
||||||
|
Vcs-Git: https://gitlab.com/kalilinux/packages/grub-btrfs.git
|
||||||
|
Vcs-Browser: https://gitlab.com/kalilinux/packages/grub-btrfs
|
||||||
|
|
||||||
|
Package: grub-btrfs
|
||||||
|
Architecture: all
|
||||||
|
Depends: ${misc:Depends}, btrfs-progs, grub2-common, gawk
|
||||||
|
Description: adds btrfs snapshots to the grub menu
|
||||||
|
This package improves the grub bootloader by adding a btrfs snapshots
|
||||||
|
sub-menu, allowing the user to boot into snapshots.
|
||||||
17
debian/copyright
vendored
Normal file
17
debian/copyright
vendored
Normal file
@@ -0,0 +1,17 @@
|
|||||||
|
Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
|
||||||
|
Upstream-Name: grub-btrfs
|
||||||
|
Source: https://github.com/Antynea/grub-btrfs
|
||||||
|
|
||||||
|
Files: *
|
||||||
|
Copyright:
|
||||||
|
Copyright 2014-2022 Antynea <anty_fab@hotmail.fr>
|
||||||
|
License: GPL-3
|
||||||
|
|
||||||
|
Files: debian/*
|
||||||
|
Copyright: 2022 Carsten Boeving <re4son@kali.org>
|
||||||
|
License: GPL-3
|
||||||
|
Comment: Debian packaging is licensed under the same terms as upstream
|
||||||
|
|
||||||
|
License: GPL-3
|
||||||
|
On Debian systems, the complete text of the GPL-3 can be found in
|
||||||
|
/usr/share/common-licenses/GPL-3.
|
||||||
1
debian/docs
vendored
Normal file
1
debian/docs
vendored
Normal file
@@ -0,0 +1 @@
|
|||||||
|
README.md
|
||||||
10
debian/gbp.conf
vendored
Normal file
10
debian/gbp.conf
vendored
Normal file
@@ -0,0 +1,10 @@
|
|||||||
|
[DEFAULT]
|
||||||
|
debian-branch = kali/master
|
||||||
|
debian-tag = kali/%(version)s
|
||||||
|
pristine-tar = True
|
||||||
|
|
||||||
|
[pq]
|
||||||
|
patch-numbers = False
|
||||||
|
|
||||||
|
[dch]
|
||||||
|
multimaint-merge = True
|
||||||
1
debian/grub-btrfs.path
vendored
Symbolic link
1
debian/grub-btrfs.path
vendored
Symbolic link
@@ -0,0 +1 @@
|
|||||||
|
../grub-btrfs.path
|
||||||
16
debian/grub-btrfs.postinst
vendored
Normal file
16
debian/grub-btrfs.postinst
vendored
Normal file
@@ -0,0 +1,16 @@
|
|||||||
|
#!/bin/sh
|
||||||
|
# see: dh_installdeb(1)
|
||||||
|
|
||||||
|
set -e
|
||||||
|
|
||||||
|
case "$1" in
|
||||||
|
configure)
|
||||||
|
if command -v update-grub >/dev/null; then
|
||||||
|
update-grub
|
||||||
|
fi
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
|
||||||
|
#DEBHELPER#
|
||||||
|
|
||||||
|
# vim:set et ts=4 sw=4:
|
||||||
16
debian/grub-btrfs.postrm
vendored
Normal file
16
debian/grub-btrfs.postrm
vendored
Normal file
@@ -0,0 +1,16 @@
|
|||||||
|
#!/bin/sh
|
||||||
|
# see: dh_installdeb(1)
|
||||||
|
|
||||||
|
set -e
|
||||||
|
|
||||||
|
case "$1" in
|
||||||
|
purge)
|
||||||
|
if command -v update-grub >/dev/null; then
|
||||||
|
update-grub
|
||||||
|
fi
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
|
||||||
|
#DEBHELPER#
|
||||||
|
|
||||||
|
# vim:set et ts=4 sw=4:
|
||||||
1
debian/grub-btrfs.service
vendored
Symbolic link
1
debian/grub-btrfs.service
vendored
Symbolic link
@@ -0,0 +1 @@
|
|||||||
|
../grub-btrfs.service
|
||||||
7
debian/kali-ci.yml
vendored
Normal file
7
debian/kali-ci.yml
vendored
Normal file
@@ -0,0 +1,7 @@
|
|||||||
|
include:
|
||||||
|
- https://gitlab.com/kalilinux/tools/kali-ci-pipeline/raw/master/recipes/kali.yml
|
||||||
|
|
||||||
|
# The installation attempts to run grub-probe to figure out what device is /
|
||||||
|
# which doesn't exist in the CI containers, so just disable it in the CI.
|
||||||
|
variables:
|
||||||
|
SALSA_CI_DISABLE_PIUPARTS: 1
|
||||||
10
debian/rules
vendored
Executable file
10
debian/rules
vendored
Executable file
@@ -0,0 +1,10 @@
|
|||||||
|
#!/usr/bin/make -f
|
||||||
|
|
||||||
|
%:
|
||||||
|
dh $@ --buildsystem=none
|
||||||
|
|
||||||
|
override_dh_auto_install:
|
||||||
|
install -D -m 0755 41_snapshots-btrfs debian/grub-btrfs/etc/grub.d/41_snapshots-btrfs
|
||||||
|
install -D -m 0644 config debian/grub-btrfs/etc/default/grub-btrfs/config
|
||||||
|
# Remove the shebang, this file is meant to be sourced
|
||||||
|
sed -i '1 s/^#!.*//' debian/grub-btrfs/etc/default/grub-btrfs/config
|
||||||
1
debian/source/format
vendored
Normal file
1
debian/source/format
vendored
Normal file
@@ -0,0 +1 @@
|
|||||||
|
3.0 (quilt)
|
||||||
5
debian/upstream/metadata
vendored
Normal file
5
debian/upstream/metadata
vendored
Normal file
@@ -0,0 +1,5 @@
|
|||||||
|
---
|
||||||
|
Bug-Database: https://github.com/Antynea/grub-btrfs/issues
|
||||||
|
Bug-Submit: https://github.com/Antynea/grub-btrfs/issues/new
|
||||||
|
Repository: https://github.com/Antynea/grub-btrfs.git
|
||||||
|
Repository-Browse: https://github.com/Antynea/grub-btrfs
|
||||||
4
debian/watch
vendored
Normal file
4
debian/watch
vendored
Normal file
@@ -0,0 +1,4 @@
|
|||||||
|
version=4
|
||||||
|
opts="filenamemangle=s%(?:.*?)?v?(\d[\d.]*@ARCHIVE_EXT@)%@PACKAGE@-$1%" \
|
||||||
|
https://github.com/Antynea/grub-btrfs/tags \
|
||||||
|
(?:.*?/)?v?@ANY_VERSION@@ARCHIVE_EXT@
|
||||||
6
grub-btrfs-openrc
Executable file
6
grub-btrfs-openrc
Executable file
@@ -0,0 +1,6 @@
|
|||||||
|
#!/bin/sh
|
||||||
|
echo $$ > /run/grub-btrfsd.pid
|
||||||
|
|
||||||
|
while true; do sleep 1 && inotifywait -e create -e delete /run/timeshift/backup/timeshift-btrfs/snapshots && sleep 5 && if [ -s "${GRUB_BTRFS_GRUB_DIRNAME:-/boot/grub}/grub-btrfs.cfg" ]; then /etc/grub.d/41_snapshots-btrfs; else ${GRUB_BTRFS_MKCONFIG:-grub-mkconfig} -o ${GRUB_BTRFS_GRUB_DIRNAME:-/boot/grub}/grub.cfg; fi ; done
|
||||||
|
|
||||||
|
|
||||||
12
grub-btrfs.path
Normal file
12
grub-btrfs.path
Normal file
@@ -0,0 +1,12 @@
|
|||||||
|
[Unit]
|
||||||
|
Description=Monitors for new snapshots
|
||||||
|
DefaultDependencies=no
|
||||||
|
Requires=\x2esnapshots.mount
|
||||||
|
After=\x2esnapshots.mount
|
||||||
|
BindsTo=\x2esnapshots.mount
|
||||||
|
|
||||||
|
[Path]
|
||||||
|
PathModified=/.snapshots
|
||||||
|
|
||||||
|
[Install]
|
||||||
|
WantedBy=\x2esnapshots.mount
|
||||||
11
grub-btrfs.service
Normal file
11
grub-btrfs.service
Normal file
@@ -0,0 +1,11 @@
|
|||||||
|
[Unit]
|
||||||
|
Description=Regenerate grub-btrfs.cfg
|
||||||
|
|
||||||
|
[Service]
|
||||||
|
Type=oneshot
|
||||||
|
# Set the possible paths for `grub-mkconfig`
|
||||||
|
Environment="PATH=/sbin:/bin:/usr/sbin:/usr/bin"
|
||||||
|
# Load environment variables from the configuration
|
||||||
|
EnvironmentFile=/etc/default/grub-btrfs/config
|
||||||
|
# Regenerate just '/boot/grub/grub-btrfs.cfg' if it exists and is not empty, else regenerate the whole grub menu
|
||||||
|
ExecStart=bash -c 'if [ -s "${GRUB_BTRFS_GRUB_DIRNAME:-/boot/grub}/grub-btrfs.cfg" ]; then /etc/grub.d/41_snapshots-btrfs; else ${GRUB_BTRFS_MKCONFIG:-grub-mkconfig} -o ${GRUB_BTRFS_GRUB_DIRNAME:-/boot/grub}/grub.cfg; fi'
|
||||||
14
grub-btrfsd
Executable file
14
grub-btrfsd
Executable file
@@ -0,0 +1,14 @@
|
|||||||
|
#!/sbin/openrc-run
|
||||||
|
# Copyright 1999-2021 Gentoo Foundation
|
||||||
|
# Distributed under the terms of the GNU General Public License v2
|
||||||
|
|
||||||
|
name="grub-btrfs daemon"
|
||||||
|
command="/usr/bin/grub-btrfs-openrc"
|
||||||
|
pidfile="/run/{RC_SVCNAME}.pid"
|
||||||
|
command_background=true
|
||||||
|
|
||||||
|
depend() {
|
||||||
|
use localmount
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
15
initramfs/Arch Linux/overlay_snap_ro-hook
Normal file
15
initramfs/Arch Linux/overlay_snap_ro-hook
Normal file
@@ -0,0 +1,15 @@
|
|||||||
|
#!/usr/bin/ash
|
||||||
|
|
||||||
|
run_latehook() {
|
||||||
|
local root_mnt="/new_root"
|
||||||
|
local current_dev=$(resolve_device "$root"); # resolve devices for blkid
|
||||||
|
if [[ $(blkid "${current_dev}" -s TYPE -o value) = "btrfs" ]] && [[ $(btrfs property get ${root_mnt} ro) != "ro=false" ]]; then # run only on a read only snapshot
|
||||||
|
local lower_dir=$(mktemp -d -p /)
|
||||||
|
local ram_dir=$(mktemp -d -p /)
|
||||||
|
mount --move ${root_mnt} ${lower_dir} # move new_root to lower_dir
|
||||||
|
mount -t tmpfs cowspace ${ram_dir} #meuh!!! space, you can't test !
|
||||||
|
mkdir -p ${ram_dir}/upper
|
||||||
|
mkdir -p ${ram_dir}/work
|
||||||
|
mount -t overlay -o lowerdir=${lower_dir},upperdir=${ram_dir}/upper,workdir=${ram_dir}/work rootfs ${root_mnt}
|
||||||
|
fi
|
||||||
|
}
|
||||||
18
initramfs/Arch Linux/overlay_snap_ro-install
Normal file
18
initramfs/Arch Linux/overlay_snap_ro-install
Normal file
@@ -0,0 +1,18 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
|
||||||
|
build() {
|
||||||
|
add_module btrfs
|
||||||
|
add_module overlay
|
||||||
|
add_binary btrfs
|
||||||
|
add_binary btrfsck
|
||||||
|
add_binary blkid
|
||||||
|
add_runscript
|
||||||
|
}
|
||||||
|
|
||||||
|
help() {
|
||||||
|
cat <<HELPEOF
|
||||||
|
This hook uses overlayfs to boot on a read only snapshot.
|
||||||
|
HELPEOF
|
||||||
|
}
|
||||||
|
|
||||||
|
# vim: set ft=sh ts=4 sw=4 et:
|
||||||
45
initramfs/readme.md
Normal file
45
initramfs/readme.md
Normal file
@@ -0,0 +1,45 @@
|
|||||||
|
### Description :
|
||||||
|
|
||||||
|
Booting on a snapshot in read-only mode can be tricky.
|
||||||
|
An elegant way is to boot this snapshot using overlayfs (included in the kernel ≥ 3.18).
|
||||||
|
|
||||||
|
Using overlayfs, the booted snapshot will behave like a live-cd in non-persistent mode.
|
||||||
|
The snapshot will not be modified, the system will be able to boot correctly, because a writeable folder will be included in the ram.
|
||||||
|
(no more problems due to `/var` not open for writing)
|
||||||
|
|
||||||
|
Any changes in this system thus started will be lost when the system is rebooted/shutdown.
|
||||||
|
|
||||||
|
To do this, it is necessary to modify the initramfs.
|
||||||
|
This means that any snapshot that does not include this modified initramfs will not be able to benefit from it.
|
||||||
|
(except for separate boot partitions)
|
||||||
|
#
|
||||||
|
### Installation :
|
||||||
|
#### Arch Linux
|
||||||
|
1.
|
||||||
|
`Pacman -S grub-btrfs`
|
||||||
|
Or if you use git
|
||||||
|
copy the `overlay_snap_ro-install` file to `/etc/initcpio/install/grub-btrfs-overlayfs`
|
||||||
|
copy the `overlay_snap_ro-hook` file to `/etc/initcpio/hooks/grub-btrfs-overlayfs`
|
||||||
|
You must rename the files. (I did it above)
|
||||||
|
|
||||||
|
For example :
|
||||||
|
`overlay_snap_ro-install` to `grub-btrfs-overlayfs`
|
||||||
|
`overlay_snap_ro-hook` to `grub-btrfs-overlayfs`
|
||||||
|
Keep in mind that the files must have exactly the same name to ensure a match.
|
||||||
|
|
||||||
|
2.
|
||||||
|
Edit the file `/etc/mkinitcpio.conf`
|
||||||
|
Added hook `grub-btrfs-overlayfs` at the end of the line `HOOKS`.
|
||||||
|
|
||||||
|
For example :
|
||||||
|
`HOOKS=(base udev autodetect modconf block filesystems keyboard fsck grub-btrfs-overlayfs)`
|
||||||
|
You notice that the name of the `hook` must match the name of the 2 installed files. (don't forget it)
|
||||||
|
|
||||||
|
3.
|
||||||
|
Re-generate your initramfs
|
||||||
|
`mkinitcpio -P` (option -P means, all preset present in `/etc/mkinitcpio.d`)
|
||||||
|
|
||||||
|
#### Other distribution
|
||||||
|
Refer to your distribution's documentation
|
||||||
|
or contribute to this project to add a paragraph.
|
||||||
|
#
|
||||||
Reference in New Issue
Block a user