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41_snapshots-btrfs: Create a bkp file. Delete the .new when no snapshots found.

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Kevin Chevreuil - Kaisen
2023-01-01 20:26:41 +01:00
committed by Pascal J
parent 8ea8046887
commit 1d53472569
1 changed files with 12 additions and 4 deletions
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16
41_snapshots-btrfs
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@@ -565,8 +565,12 @@ boot_separate()
IFS=$oldIFS
}
rm -f "$grub_btrfs_directory/grub-btrfs.new" "$grub_btrfs_directory/grub-btrfs.cfg"
rm -f "$grub_btrfs_directory/grub-btrfs.new"
> "$grub_btrfs_directory/grub-btrfs.new" # Create a "grub-btrfs.new" file in "grub_btrfs_directory"
# Create a backup of the "$grub_btrfs_directory/grub-btrfs.cfg" file if exist
if [ -e "$grub_btrfs_directory/grub-btrfs.cfg" ]; then
mv -f "$grub_btrfs_directory/grub-btrfs.cfg" "$grub_btrfs_directory/grub-btrfs.cfg.bkp"
fi
# 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/" > /dev/null
@@ -593,17 +597,21 @@ EOF
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 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_error "No snapshots found."
fi
# Move "grub-btrfs.new" to "grub-btrfs.cfg"
header_menu
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"
rm -f "$grub_btrfs_directory/grub-btrfs.new" "$grub_btrfs_directory/grub-btrfs.cfg.bkp"
else
print_error "Syntax errors were detected in generated ${grub_btrfs_directory}/grub-btrfs.new file. Old grub-btrfs.cfg (if present) was not replaced."
if [ -e "$grub_btrfs_directory/grub-btrfs.cfg.bkp" ]; then
mv -f "$grub_btrfs_directory/grub-btrfs.cfg.bkp" "$grub_btrfs_directory/grub-btrfs.cfg"
fi
print_error "Syntax errors were detected in generated ${grub_btrfs_directory}/grub-btrfs.new file. The old grub-btrfs.cfg file (if present) have been restored."
fi
# warn when this script is run but there is no entry in grub.cfg