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fix bashisms

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Signed-off-by: Pascal Jäger <pascal.jaeger@leimstift.de>
This commit is contained in:
Pascal Jäger
2024-03-27 21:38:37 +01:00
parent 72a3dc092b
commit 2886ad7b3c
2 changed files with 52 additions and 31 deletions
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81
41_snapshots-btrfs
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@@ -1,4 +1,4 @@
#! /usr/bin/env bash
#! /usr/bin/env sh
#
# Written by: Antynea
# BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
@@ -41,14 +41,16 @@ set -e
sysconfdir="/etc"
grub_btrfs_config="${sysconfdir}/default/grub-btrfs/config"
# shellcheck disable=SC1090
[ -f "$grub_btrfs_config" ] && . "$grub_btrfs_config"
# shellcheck disable=SC1091
[ -f "${sysconfdir}/default/grub" ] && . "${sysconfdir}/default/grub"
## Error Handling
print_error()
{
local err_msg="$*"
local bug_report="If you think an error has occurred, please file a bug report at \"https://github.com/Antynea/grub-btrfs\""
err_msg="$*"
bug_report="If you think an error has occurred, please file a bug report at \"https://github.com/Antynea/grub-btrfs\""
printf "%s\n" "${err_msg}" "${bug_report}" >&2 ;
exit 0
}
@@ -77,8 +79,10 @@ done
## Exit the script, if:
[ "$(echo "$GRUB_BTRFS_DISABLE" | tr '[:upper:]' '[:lower:]')" = 'true' ] && print_error "GRUB_BTRFS_DISABLE is set to true (default=false)"
if ! type btrfs >/dev/null 2>&1; then print_error "btrfs-progs isn't installed"; fi
# shellcheck disable=SC1090,SC2015
[ -f "${GRUB_BTRFS_MKCONFIG_LIB:-/usr/share/grub/grub-mkconfig_lib}" ] && . "${GRUB_BTRFS_MKCONFIG_LIB:-/usr/share/grub/grub-mkconfig_lib}" || print_error "grub-mkconfig_lib couldn't be found"
[[ "$(btrfs filesystem df / 2>&1)" == *"not a btrfs filesystem"* ]] && print_error "Root filesystem isn't btrfs"
# shellcheck disable=SC2005
if echo "$(btrfs filesystem df / 2>&1)" | grep "not a btrfs filesystem" >/dev/null 2>&1; then print_error "Root filesystem isn't btrfs"; fi
printf "Detecting snapshots ...\n" >&2 ;
@@ -110,16 +114,28 @@ fi
## Probe information of Root and Boot devices
# Probe info "Root partition"
# shellcheck disable=SC2154 # grub_probe is provided by grub environment
root_device=$(${grub_probe} --target=device /) # Root device
# shellcheck disable=SC2086 # we actually need word splitting here if we have several root devices (e.g. RAID)
root_uuid=$(${grub_probe} --device ${root_device} --target="fs_uuid" 2>/dev/null) # UUID of the root device
root_uuid_subvolume=$(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
root_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<< "$root_uuid_subvolume") # UUID of the root subvolume '
root_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<EOF
"$root_uuid_subvolume"
EOF
) # UUID of the root subvolume '
# Probe info "Boot partition"
# shellcheck disable=SC2086 # we actually need word splitting here if we have several devices
boot_device=$(${grub_probe} --target=device ${boot_directory}) # Boot device
# shellcheck disable=SC2086 # we actually need word splitting here if we have several devices
boot_uuid=$(${grub_probe} --device ${boot_device} --target="fs_uuid" 2>/dev/null) # UUID of the boot device
boot_uuid_subvolume=$(btrfs subvolume show "$boot_directory" 2>/dev/null) || boot_uuid_subvolume=" UUID: $root_uuid_subvolume"; # If boot folder isn't a subvolume, then UUID=root_uuid_subvolume
boot_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<< "$boot_uuid_subvolume") # UUID of the boot subvolume '
boot_uuid_subvolume=$(awk -F":" 'match($1, /(^[ \t]+UUID)/) {sub(/^[ \t]+/, "", $2); print $2}' <<EOF
"$boot_uuid_subvolume"
EOF
) # UUID of the boot subvolume '
# shellcheck disable=SC2086 # we actually need word splitting here if we have several devices
boot_hs=$(${grub_probe} --device ${boot_device} --target="hints_string" 2>/dev/null) # hints string
# shellcheck disable=SC2086 # we actually need word splitting here if we have several devices
boot_fs=$(${grub_probe} --device ${boot_device} --target="fs" 2>/dev/null) # Type filesystem of boot device
## Parameters passed to the kernel
@@ -143,7 +159,7 @@ fi
## Detect rootflags
detect_rootflags()
{
local fstabflags=$(grep -oE '^\s*[^#][[:graph:]]+\s+/\s+btrfs\s+[[:graph:]]+' "${grub_btrfs_mount_point}/${snap_dir_name_trim}/etc/fstab" \
fstabflags=$(grep -oE '^\s*[^#][[:graph:]]+\s+/\s+btrfs\s+[[:graph:]]+' "${grub_btrfs_mount_point}/${snap_dir_name_trim}/etc/fstab" \
| sed -E 's/^.*[[:space:]]([[:graph:]]+)$/\1/;s/,?subvol(id)?=[^,$]+//g;s/^,//')
rootflags="rootflags=${fstabflags:+$fstabflags,}${GRUB_BTRFS_ROOTFLAGS:+$GRUB_BTRFS_ROOTFLAGS,}"
}
@@ -151,8 +167,8 @@ detect_rootflags()
unmount_grub_btrfs_mount_point()
{
if [ -d "$grub_btrfs_mount_point" ]; then
local wait=true
local wait_max=0
wait=true
wait_max=0
printf "Unmount %s .." "$grub_btrfs_mount_point" >&2;
while $wait; do
if grep -qs "$grub_btrfs_mount_point" /proc/mounts; then
@@ -200,6 +216,7 @@ make_menu_entries()
# prefix_i=${i%%"-"*}
suffix_i=${i#*"-"}
# alt_suffix_i=${i##*"-"}
# shellcheck disable=SC2269 # this is a way to exit the if..elif..
if [ "${kversion}" = "${suffix_i}" ]; then i="${i}";
elif [ "${kversion}.img" = "${suffix_i}" ]; then i="${i}";
elif [ "${kversion}-fallback.img" = "${suffix_i}" ]; then i="${i}";
@@ -279,21 +296,21 @@ make_menu_entries()
## Trim a string from leading and trailing whitespaces
trim() {
local var="$*"
var="$*"
var="${var#"${var%%[![:space:]]*}"}"
var="${var%"${var##*[![:space:]]}"}"
echo -n "$var"
printf '%s' "$var"
}
## List of snapshots on filesystem
snapshot_list()
{
local snapper_info="info.xml"
local timeshift_info="info.json"
local date_snapshots=()
local path_snapshots=()
local type_snapshots=()
local description_snapshots=()
snapper_info="info.xml"
timeshift_info="info.json"
date_snapshots=()
path_snapshots=()
type_snapshots=()
description_snapshots=()
IFS=$'\n'
for snap in $(btrfs subvolume list -sa "${btrfs_subvolume_sort}" /); do # Parse btrfs snapshots
IFS=$oldIFS
@@ -320,7 +337,8 @@ snapshot_list()
local description_snapshot="N/A"
# path to yabsnap snapshot meta data
local yabsnap_info="$grub_btrfs_mount_point/${path_snapshot%"/"*}/$(echo "${snap[13]}" | awk -F'/' '{print $3 "-meta.json"}')"
local yabsnap_info
yabsnap_info="$grub_btrfs_mount_point/${path_snapshot%"/"*}/$(echo "${snap[13]}" | awk -F'/' '{print $3 "-meta.json"}')"
if [[ -s "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$snapper_info" ]] ; then
type_snapshot=$(awk -F"<|>" 'match($2, /^type/) {print $3}' "$grub_btrfs_mount_point/${path_snapshot%"/"*}/$snapper_info") # search matching string beginning "type"
@@ -399,30 +417,31 @@ parse_snapshot_list()
snap_dir_name="$(echo "$item" | cut -d'|' -f2)" # column_2
snap_dir_name_trim="$(trim "$snap_dir_name")"
snap_snapshot="$snap_dir_name" # Used by "title_format" function
# shellcheck disable=SC2034 # Used by "title_format" function
snap_snapshot="$snap_dir_name"
# shellcheck disable=SC2034 # Used by "title_format" function
snap_type="$(echo "$item" | cut -d'|' -f3)" # column_3
# shellcheck disable=SC2034 # Used by "title_format" function
snap_description="$(echo "$item" | cut -d'|' -f4)" # column_4
}
## Detect kernels in "boot_directory"
detect_kernel()
{
list_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+=("$okernel")
list_kernel="${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
for ckernel in "${boot_dir}"/${GRUB_BTRFS_NKERNEL} ; do
[ ! -f "${ckernel}" ] && continue;
list_kernel+=("$ckernel")
list_kernel="${list_kernel} $okernel"
done
fi
}
@@ -468,7 +487,7 @@ detect_microcode()
# Custom name microcode in "GRUB_BTRFS_CUSTOM_MICROCODE"
if [ -n "${GRUB_BTRFS_CUSTOM_MICROCODE}" ] ; then
for cucode in "${boot_dir}/${GRUB_BTRFS_CUSTOM_MICROCODE[@]}" ; do
[[ ! -f "${cucode}" ]] && continue
[ ! -f "${cucode}" ] && continue
list_ucode+=("$cucode")
done
fi
@@ -481,7 +500,7 @@ title_format()
{
title_menu="|" # "|" is for visuals only
title_submenu="|" # "|" is for visuals only
[[ -z "${GRUB_BTRFS_TITLE_FORMAT}" ]] && GRUB_BTRFS_TITLE_FORMAT=("date" "snapshot" "type" "description"); # Default parameters
[ -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],,}" # $var is a indirect variable
@@ -496,15 +515,15 @@ title_format()
# Adds a header to the grub-btrfs.cfg file
header_menu()
{
local header_entry=""
[[ -z "${GRUB_BTRFS_TITLE_FORMAT}" ]] && GRUB_BTRFS_TITLE_FORMAT=("date" "snapshot" "type" "description"); # Default parameters
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[$key],,}]})));
lenght_title_column_left=$(((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[$key],,}]}" "|") # Final "|" is for visuals only
done
@@ -523,6 +542,7 @@ boot_bounded()
boot_dir="$grub_btrfs_mount_point/$snap_dir_name_trim$boot_directory"
detect_kernel
if [ -z "${list_kernel}" ]; then continue; fi
# TODO
name_kernel=("${list_kernel[@]##*"/"}")
detect_initramfs
name_initramfs=("${list_initramfs[@]##*"/"}")
@@ -614,6 +634,7 @@ if [ "${count_limit_snap}" = "0" ] || [ -z "${count_limit_snap}" ]; then
fi
# Move "grub-btrfs.new" to "grub-btrfs.cfg"
header_menu
# shellcheck disable=SC2154 # bindir is provided by grub environment
if "${bindir}/${GRUB_BTRFS_SCRIPT_CHECK:-grub-script-check}" "$grub_btrfs_directory/grub-btrfs.new"; then
cat "$grub_btrfs_directory/grub-btrfs.new" > "$grub_btrfs_directory/grub-btrfs.cfg"
rm -f "$grub_btrfs_directory/grub-btrfs.new" "$grub_btrfs_directory/grub-btrfs.cfg.bkp"

2
config
View File

@@ -1,7 +1,7 @@
#!/usr/bin/env bash
GRUB_BTRFS_VERSION=4.13-yabsnap_info_support-2024-03-06T13:43:57+00:00
GRUB_BTRFS_VERSION=4.13-fix-bashisms-2024-03-27T20:48:48+00:00
# Disable grub-btrfs.
# Default: "false"