fix bashisms

Signed-off-by: Pascal Jäger <pascal.jaeger@leimstift.de>
2026-08-19 21:28:24 +08:00 · 2024-03-28 10:00:33 +01:00
10 changed files with 85 additions and 273 deletions
--- a/.github/workflows/bump-version-on-merge.yml
+++ b/.github/workflows/bump-version-on-merge.yml
@@ -1,34 +0,0 @@
-name: Bump version on merge
-
-on:
-  push:
-    branches:
-      - master
-
-permissions:
-  contents: write
-
-jobs:
-  bump-version:
-    name: Bump version in config
-    runs-on: ubuntu-latest
-    if: github.actor != 'github-actions[bot]'
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          ref: master
-
-      - name: Update version in config
-        run: |
-          version="master-$(date -u -Iseconds)"
-          sed -i "s/GRUB_BTRFS_VERSION=.*/GRUB_BTRFS_VERSION=${version}/" config
-          echo "VERSION=${version}" >> $GITHUB_ENV
-
-      - name: Commit updated config
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "github-actions[bot]@users.noreply.github.com"
-          git add config
-          git commit -m "chore: bump version to ${{ env.VERSION }}"
-          git push origin master
--- a/.github/workflows/bump-version.yml
+++ b/.github/workflows/bump-version.yml
@@ -1,31 +0,0 @@
-name: Bump version on tag
-
-on:
-  push:
-    tags:
-      - '*'
-
-permissions:
-  contents: write
-
-jobs:
-  bump-version:
-    name: Bump version in config
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          ref: master
-
-      - name: Update version in config
-        run: |
-          sed -i "s/GRUB_BTRFS_VERSION=.*/GRUB_BTRFS_VERSION=${{ github.ref_name }}/" config
-
-      - name: Commit updated config
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "github-actions[bot]@users.noreply.github.com"
-          git add config
-          git commit -m "chore: bump version to ${{ github.ref_name }}"
-          git push origin master
--- a/.github/workflows/codespell.yml
+++ b/.github/workflows/codespell.yml
@@ -14,8 +14,9 @@ jobs:
  codespell:
    name: Check for spelling errors
    runs-on: ubuntu-latest
+
    steps:
      - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v3
      - name: Codespell
        uses: codespell-project/actions-codespell@v2
--- a/218
+++ b/218
@@ -1,4 +1,4 @@
-#! /usr/bin/env bash
+#! /usr/bin/env sh
 #
 # Written by: Antynea
 # BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
@@ -41,24 +41,17 @@ set -e
 sysconfdir="/etc"
 grub_btrfs_config="${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"

-## Logging
-print_info()
-{
-    printf "grub-btrfs: %s\n" "$*" >&2
-}
-
-print_warning()
-{
-    printf "grub-btrfs: Warning: %s\n" "$*" >&2
-}
-
+## Error Handling
 print_error()
 {
-    local bug_report="If you think an error has occurred, please file a bug report at \"https://github.com/Antynea/grub-btrfs\""
-    printf "grub-btrfs: Error: %s\n" "$*" "${bug_report}" >&2
+    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
 }

@@ -84,12 +77,14 @@ while getopts :V-: opt; do
 done

 ## Exit the script, if:
-[ "$(echo "$GRUB_BTRFS_DISABLE" | tr '[:upper:]' '[:lower:]')" = 'true' ] && { print_info "GRUB_BTRFS_DISABLE is set to true (default=false)"; exit 0; }
-if ! type btrfs >/dev/null 2>&1; then print_info "btrfs-progs isn't installed"; exit 0; fi
+[ "$(echo "$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"
-[[ "$(btrfs filesystem df / 2>&1)" == *"not a btrfs filesystem"* ]] && { print_info "Root filesystem isn't btrfs"; exit 0; }
+# shellcheck disable=SC2005
+if echo "$(btrfs filesystem df / 2>&1)" | grep "not a btrfs filesystem" >/dev/null 2>&1; then print_error "Root filesystem isn't btrfs"; fi

-print_info "Detecting snapshots ..."
+printf "Detecting snapshots ...\n" >&2 ;

 ## Submenu name
 distro=$(awk -F "=" '/^NAME=/ {gsub(/"/, "", $2); print $2}' /etc/os-release) # escape '
@@ -116,85 +111,32 @@ esac
 if [ -n "${GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS}" ] ; then
    protection_authorized_users="--users ${GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS} "
 fi
+
 ## Probe information of Root and Boot devices
-# -----------------------------------------------------------
-
-# ---------- Root partition ----------
-root_device="$(${grub_probe} --target=device /)"           # e.g. /dev/mapper/enc
-root_uuid="$(${grub_probe} --device "${root_device}" --target=fs_uuid 2>/dev/null)" || true
-
-# Fallback when grub-probe fails (encrypted container, detached header…)
-if [ -z "$root_uuid" ]; then
-    root_uuid="$(blkid -s UUID -o value "${root_device}" 2>/dev/null)"
-fi
-[ -z "$root_uuid" ] && print_error "Cannot determine UUID of ${root_device}"
-
-# Root subvolume UUID
-root_uuid_subvolume="$(btrfs subvolume show / 2>/dev/null | \
-                       awk -F':' '/^\s*UUID/ {gsub(/^[ \t]+/, "", $2); print $2}')"
-[ -z "$root_uuid_subvolume" ] && print_error "UUID of the root subvolume is not available"
-
-# ---------- Boot partition ----------
-boot_device="$(${grub_probe} --target=device "${boot_directory}")"   # e.g. /dev/sdb1
-boot_uuid="$(${grub_probe} --device "${boot_device}" --target=fs_uuid 2>/dev/null)" || true
-
-# Fallback for boot UUID
-if [ -z "$boot_uuid" ]; then
-    boot_uuid="$(blkid -s UUID -o value "${boot_device}" 2>/dev/null)"
-fi
-[ -z "$boot_uuid" ] && print_error "Cannot determine UUID of ${boot_device}"
-
-# If /boot is not a Btrfs subvolume, reuse root subvol UUID
-boot_uuid_subvolume="$(
-    btrfs subvolume show "${boot_directory}" 2>/dev/null | \
-        awk -F':' '/^\s*UUID/ {gsub(/^[ \t]+/, "", $2); print $2; exit}'
-)"
-[ -z "$boot_uuid_subvolume" ] && boot_uuid_subvolume="$root_uuid_subvolume"
-
-# Extra data for GRUB commands
-boot_hs="$(${grub_probe} --device "${boot_device}" --target=hints_string 2>/dev/null)"
-boot_fs="$(${grub_probe} --device "${boot_device}" --target=fs 2>/dev/null)"
-# -----------------------------------------------------------
-
-## Enable LUKS encrypted devices support
-case "$(echo "$GRUB_BTRFS_ENABLE_CRYPTODISK" | tr '[:upper:]' '[:lower:]')" in
-    true)
-        list_insmods=(
-            "insmod gzio"
-            "insmod part_gpt"
-            "insmod cryptodisk"
-            "insmod luks"
-            "insmod gcry_rijndael"
-            "insmod gcry_rijndael"
-            "insmod gcry_sha256"
-            "insmod ${boot_fs}"
-        )
-
-        # Extract the <source> field of cryptdevice=<source>:<name>[:header]
-        crypt_source="$(printf '%s %s\n' "$GRUB_CMDLINE_LINUX_DEFAULT" "$GRUB_CMDLINE_LINUX" \
-                          | grep -o -P 'cryptdevice=\K[^:]+' || true)"
-
-        # Turn the source into a UUID that cryptomount -u understands
-        crypt_uuid=""
-        if [[ "$crypt_source" =~ ^UUID=.* ]]; then            # already UUID=…
-            crypt_uuid="${crypt_source#UUID=}"
-        elif [[ "$crypt_source" == /dev/* ]]; then            # path → resolve → blkid
-            real_dev=$(readlink -f "$crypt_source" 2>/dev/null || true)
-            [ -b "$real_dev" ] && crypt_uuid=$(blkid -s UUID -o value "$real_dev" 2>/dev/null || true)
-        fi
-
-        # Emit the proper cryptomount command
-        if [[ "$crypt_uuid" =~ ^[0-9a-fA-F-]{36}$ ]]; then
-            list_insmods+=("cryptomount -u ${crypt_uuid}")
-        else
-            # last-resort: scan all crypto containers (works but a bit slower)
-            list_insmods+=("cryptomount -a")
-        fi
-        ;;
-    *)
-        list_insmods=("insmod ${boot_fs}")
-        ;;
-esac
+# Probe info "Root partition"
+# shellcheck disable=SC2154 # grub_probe is provided by grub environment
+root_device=$(${grub_probe} --target=device /) # Root device
+# shellcheck disable=SC2086 # we actually need word splitting here if we have several root devices (e.g. RAID)
+root_uuid=$(${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 $2}' <<EOF
+"$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 $2}' <<EOF
+"$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
 kernel_parameters="$GRUB_CMDLINE_LINUX $GRUB_CMDLINE_LINUX_DEFAULT $GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS"
@@ -217,7 +159,7 @@ fi
 ## Detect rootflags
 detect_rootflags()
 {
-    local fstabflags=$(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:+$GRUB_BTRFS_ROOTFLAGS,}"
 }
@@ -225,8 +167,8 @@ detect_rootflags()
 unmount_grub_btrfs_mount_point()
 {
 if [ -d "$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
@@ -274,6 +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}";
@@ -292,22 +235,13 @@ make_menu_entries()
        if [ x\$feature_all_video_module = xy ]; then
        insmod all_video
        fi
-        set gfxpayload=keep"
-        for j in "${insmods[@]}"; do
-            entry "\
-        ${j}"
-        done
-        entry "\
+        set gfxpayload=keep
+        insmod ${boot_fs}
        if [ x\$feature_platform_search_hint = xy ]; then
            search --no-floppy --fs-uuid  --set=root ${boot_hs} ${boot_uuid}
        else
            search --no-floppy --fs-uuid  --set=root ${boot_uuid}
-        fi"
-        if [ "${SUSE_BTRFS_SNAPSHOT_BOOTING:-"false"}" = "true" ]; then
-            entry "\
-        set btrfs_subvolid=5"
        fi
-        entry "\
        echo 'Loading Snapshot: "${snap_date_trim}" "${snap_dir_name_trim}"'
        echo 'Loading Kernel: "${k}" ...'
        linux \"${boot_dir_root_grub}/"${k}"\" root="${LINUX_ROOT_DEVICE}" ${kernel_parameters} ${rootflags}subvol=\""${snap_dir_name_trim}"\""
@@ -342,12 +276,7 @@ make_menu_entries()
            search --no-floppy --fs-uuid  --set=root ${boot_hs} ${boot_uuid}
        else
            search --no-floppy --fs-uuid  --set=root ${boot_uuid}
-        fi"
-        if [ "${SUSE_BTRFS_SNAPSHOT_BOOTING:-"false"}" = "true" ]; then
-            entry "\
-        set btrfs_subvolid=5"
        fi
-        entry "\
        echo 'Loading Snapshot: "${snap_date_trim}" "${snap_dir_name_trim}"'
        echo 'Loading Kernel: "${k}" ...'
        linux \"${boot_dir_root_grub}/"${k}"\" root="${LINUX_ROOT_DEVICE}" ${kernel_parameters} ${rootflags}subvol=\""${snap_dir_name_trim}"\""
@@ -367,21 +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=$oldIFS
@@ -406,9 +335,10 @@ snapshot_list()
        # Parse Snapper & timeshift & yabsnap information
        local type_snapshot="N/A"
        local description_snapshot="N/A"
-
+        
        # path to yabsnap snapshot meta data
-        local yabsnap_info="$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"
@@ -487,30 +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
 }
@@ -543,8 +474,12 @@ 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 ${GRUB_EARLY_INITRD_LINUX_STOCK} ; do
-        oiucode="${boot_dir}/${oiucode}"
+    for oiucode in  "${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+=("$oiucode")
    done
@@ -552,7 +487,7 @@ detect_microcode()
    # Custom name microcode in "GRUB_BTRFS_CUSTOM_MICROCODE"
    if [ -n "${GRUB_BTRFS_CUSTOM_MICROCODE}" ] ; then
        for cucode in "${boot_dir}/${GRUB_BTRFS_CUSTOM_MICROCODE[@]}" ; do
-            [[ ! -f "${cucode}" ]] && continue
+            [ ! -f "${cucode}" ] && continue
            list_ucode+=("$cucode")
        done
    fi
@@ -565,7 +500,7 @@ title_format()
 {
    title_menu="|" # "|" is for visuals only
    title_submenu="|" # "|" is for visuals only
-    [[ -z "${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],,}" # $var is a indirect variable
@@ -580,15 +515,15 @@ title_format()
 # Adds a header to the grub-btrfs.cfg file
 header_menu()
 {
-    local header_entry=""
-    [[ -z "${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[$key],,}]}" "|") # Final "|" is for visuals only
        done
@@ -607,6 +542,7 @@ boot_bounded()
        boot_dir="$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=("${list_initramfs[@]##*"/"}")
@@ -615,7 +551,6 @@ boot_bounded()
        detect_rootflags
        title_format
        boot_dir_root_grub="$(make_system_path_relative_to_its_root "${boot_dir}")" # convert "boot_directory" to root of GRUB (e.g /boot become /)
-        insmods=("${list_insmods[@]##*"/"}")
        make_menu_entries
        # show snapshot found during run "grub-mkconfig"
        if [ "${GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND:-"true"}" = "true" ]; then
@@ -695,10 +630,11 @@ fi
 # if no snapshot found, delete the "$grub_btrfs_directory/grub-btrfs.new" file and the "$grub_btrfs_directory/grub-btrfs.cfg.bkp" file and exit
 if [ "${count_limit_snap}" = "0" ] || [ -z "${count_limit_snap}" ]; then
    rm -f "$grub_btrfs_directory/grub-btrfs.new" "$grub_btrfs_directory/grub-btrfs.cfg.bkp"
-    print_info "No snapshots found."; exit 0
+    print_error "No snapshots found."
 fi
 # Move "grub-btrfs.new" to "grub-btrfs.cfg"
 header_menu
+# shellcheck disable=SC2154 # bindir is provided by grub environment
 if "${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"
--- a/README.md
+++ b/README.md
@@ -240,7 +240,7 @@ sudo rc-service grub-btrfsd start

 To activate it during system startup, run:
 ```bash
-sudo rc-update add grub-btrfsd default 
+sudo rc-config add grub-btrfsd default 
 ```

 ##### 💼 Snapshots not in `/.snapshots` for OpenRC
@@ -274,10 +274,6 @@ After that, the daemon should be restarted with:
 sudo rc-service grub-btrfsd restart
 ```

-##### 🔒 Snapshots on LUKS encrypted devices
-By default, grub-btrfs generates entries that does not load modules for dealing with encrypted devices.
-Enable the `GRUB_BTRFS_ENABLE_CRYPTODISK` variable in `/etc/default/grub-btrfs/config` to load said modules and then execute the steps to mount encrypted root after selecting the snapshot.
-
 - - -
 ### Troubleshooting
 If you experience problems with grub-btrfs don't hesitate [to file an issue](https://github.com/Antynea/grub-btrfs/issues/new/choose).
--- a/16
+++ b/16
@@ -1,15 +1,7 @@
 #!/usr/bin/env bash


-GRUB_BTRFS_VERSION=master-2026-05-31T15:55:08+00:00
-
-# Distribution specific auto-detection (e.g. Fedora)
-if [ -f /etc/fedora-release ]; then
-    GRUB_BTRFS_GRUB_DIRNAME="/boot/grub2"
-    GRUB_BTRFS_GBTRFS_DIRNAME="/boot/grub2"
-    GRUB_BTRFS_MKCONFIG="grub2-mkconfig"
-    GRUB_BTRFS_SCRIPT_CHECK="grub2-script-check"
-fi
+GRUB_BTRFS_VERSION=4.13-fix-bashisms-2024-03-27T20:48:48+00:00

 # Disable grub-btrfs.
 # Default: "false"
@@ -82,7 +74,7 @@ GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("@")
 # 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" "var/lib/containers" "@var/lib/containers" "@/var/lib/containers")
+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:
@@ -166,7 +158,3 @@ GRUB_BTRFS_IGNORE_PREFIX_PATH=("var/lib/docker" "@var/lib/docker" "@/var/lib/doc
 # doesn't work if GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS isn't empty
 # Default: "false"
 #GRUB_BTRFS_DISABLE_PROTECTION_SUBMENU="true"
-
-# Enable booting from snapshots stored on LUKS encrypted devices
-# Default: "false"
-#GRUB_BTRFS_ENABLE_CRYPTODISK="true"
--- a/grub-btrfsd.initd
+++ b/grub-btrfsd.initd
@@ -5,7 +5,7 @@
 name="grub-btrfs daemon"
 command="/usr/bin/grub-btrfsd"
 command_args="$optional_args ${snapshots}"
-pidfile="/run/${RC_SVCNAME}.pid"
+pidfile="/run/{RC_SVCNAME}.pid"
 command_background=true

 depend() {
--- a/initramfs/readme.md
+++ b/initramfs/readme.md
@@ -40,39 +40,8 @@ Re-generate your initramfs
 `mkinitcpio -P` (option -P means, all preset present in `/etc/mkinitcpio.d`)

 #### Dracut based distros
-Distributions that use Dracut to make their initramfs (many of the Fedora based Distros) have to include the `overlayfs` module into the initramfs and pass either `rd.live.overlay.readonly=1` (to boot into the snapshot read only) or `rd.live.overlay.overlayfs=1` (to act like a livedisk, that is files can be changed but changes will be lost on the next boot) to their kernel command line in grub.
-
-1. Include `overlayfs` module into dracut
-
-```bash
-echo 'add_dracutmodules+=" overlayfs "' | sudo tee /etc/dracut.conf.d/overlayfs.conf
-```
-
-2. Fix for dracut <109
-
-Unfortunately, dracut version <109 has a bug that prevents overlayfs mount from properly working. [A fix has been committed into dracut version 109](https://github.com/dracut-ng/dracut-ng/commit/deeb670c28d12a478bbea95e29677e436d1912fb). If you are still on version < 109, instead of editing `/usr/lib/dracut/modules.d/70overlayfs/mount-overlayfs.sh` directly on your system, which will get overwritten on updates to the dracut package, we can duplicate the whole module with a lower priority number and carry out the patch there. As explained in this [very old notes about dracut](https://wwoods.fedorapeople.org/doc/dracut-notes.html):
-
-> dracut refuses to overwrite files when installing things into the initramfs, so things installed by the the lower numbered modules have priority over the higher ones.
-
-```bash
-sudo cp -r /usr/lib/dracut/modules.d/70overlayfs /usr/lib/dracut/modules.d/69overlayfs
-sudoedit /usr/lib/dracut/modules.d/69overlayfs/mount-overlayfs.sh
-```
-
-Edit the file as per [the commit](https://github.com/dracut-ng/dracut/commit/deeb670c28d12a478bbea95e29677e436d1912fb)
-
-3. Regenerate the initramfs
-
-```
-# for current kernel's initramfs
-sudo dracut -f
-# for all kernels
-sudo dracut -f --regenerate-all
-```
-
-4. Add kernel parameter and regenerate grub snapshot-submenu
-
-Grub-btrfs provides the variable `GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS` in `/etc/default/grub-btrfs/config` to add any command to the kernel command line. Set it to `GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS="rd.live.overlay.overlayfs=1"` to make snapshots immutable when booted into. 
+Distributions that use Dracut to make their initramfs (many of the Fedora based Distros) simply have to pass either `rd.live.overlay.readonly=1` (to boot into the snapshot read only) or `rd.live.overlay.overlayfs=1` (to act like a livedisk, that is files can be changed but changes will be lost on the next boot) to their kernel command line in grub. 
+Grub-btrfs provides the variable `GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS` to add any command to the kernel command line. Set it to `GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS="rd.live.overlay.overlayfs=1"` to make snapshots immutable when booted into. 
 After changing this run `sudo /etc/grub.d/41_snapshots-btrfs` to generate a new snapshot-submenu with the parameter added. 

 #### Other distribution
--- a/manpages/grub-btrfs.8.man
+++ b/manpages/grub-btrfs.8.man
@@ -102,14 +102,6 @@ Default: “false”
 .IP \(em 4
 Example: \fCGRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION="true"\fP

-.SS "\GRUB_BTRFS_ENABLE_CRYPTODISK\fP"
-.PP
-Enable booting from snapshots stored on LUKS encrypted devices
-.IP \(em 4
-Default: “false”
-.IP \(em 4
-Example: \GRUB_BTRFS_ENABLE_CRYPTODISK="true"\fP
-
 .SS "CUSTOM KERNELS"
 .SS "\fCGRUB_BTRFS_NKERNEL\fP / \fCGRUB_BTRFS_NINIT\fP / \fCGRUB_BTRFS_CUSTOM_MICROCODE\fP"
 .PP
--- a/manpages/grub-btrfs.8.org
+++ b/manpages/grub-btrfs.8.org
@@ -73,11 +73,6 @@ Change to "true" if your boot partition is not detected as separate.
 - Default: "false"
 - Example: ~GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION="true"~

-*** ~GRUB_BTRFS_ENABLE_CRYPTODISK~
-Enable booting from snapshots stored on LUKS encrypted devices
- Default: "false"
- Example: ~GRUB_BTRFS_ENABLE_CRYPTODISK="true"~
-
 ** CUSTOM KERNELS

 *** ~GRUB_BTRFS_NKERNEL~ / ~GRUB_BTRFS_NINIT~ / ~GRUB_BTRFS_CUSTOM_MICROCODE~