Adding ext4 support.

5 files changed, 28 insertions, 16 deletions

diff --git a/bin/live-snapshot b/bin/live-snapshot
index 3d4efad..d942c90 100755
--- a/bin/live-snapshot
+++ b/bin/live-snapshot
@@ -99,7 +99,7 @@ Help ()
 	echo "  -o, --output: output image file (default: ${DEST})."
 	echo "  -r, --resync-string: internally used to resync previous made snapshots."
 	echo "  -f, --refresh: try to sync a running snapshot."
-	echo "  -t, --type: snapshot filesystem type. Options: \"squashfs\", \"ext2\", \"ext3\", \"jffs2\" or \"cpio\".gz archive (default: ${SNAP_TYPE})"
+	echo "  -t, --type: snapshot filesystem type. Options: \"squashfs\", \"ext2\", \"ext3\", \"ext4\", \"jffs2\" or \"cpio\".gz archive (default: ${SNAP_TYPE})"
 	echo
 	echo "Look at live-snapshot(1) man page for more information."
 
@@ -257,6 +257,11 @@ Defaults ()
 			""|*.ext2|*.ext3)
 				SNAP_TYPE="ext2"
 				;;
+
+			*.ext4)
+				SNAP_TYPE="ext4"
+				;;
+
 			*)
 				Error "unrecognized resync string"
 				;;
@@ -276,6 +281,10 @@ Defaults ()
 			ext3)
 				DEST="${MOUNTP}/live-sn.ext2"
 				;;
+
+			ext4)
+				DEST="${MOUNTP}/live-sn.ext4"
+				;;
 		esac
 	else
 		DEST="${SNAP_OUTPUT}"
@@ -285,7 +294,7 @@ Defaults ()
 Validate_input ()
 {
 	case "${SNAP_TYPE}" in
-		cpio|squashfs|jffs2|ext2|ext3)
+		cpio|squashfs|jffs2|ext2|ext3|ext4)
 			;;
 
 		*)
@@ -427,9 +436,9 @@ Do_snapshot ()
 			cd "${OLDPWD}"
 			;;
 
-		# ext2|ext3 and jffs2 does not easily support an exclude list; files
+		# ext2|ext3|ext4 and jffs2 does not easily support an exclude list; files
 		# should be copied to another directory in order to filter content
-		ext2|ext3)
+		ext2|ext3|ext4)
 			DU_DIM="$(du -ks ${SNAP_COW} | cut -f1)"
 			REAL_DIM="$(expr ${DU_DIM} + ${DU_DIM} / 20)" # Just 5% more to be sure, need something more sophistcated here...
 			genext2fs --size-in-blocks=${REAL_DIM} --reserved-percentage=0 --root="${SNAP_COW}" "${DEST}"
@@ -462,7 +471,7 @@ Warn_user ()
 	if [ -z "${SNAP_RESYNC_STRING}" ]
 	then
 		case ${SNAP_TYPE} in
-			cpio|ext2|ext3)
+			cpio|ext2|ext3|ext4)
 				echo "Please move ${DEST} (if is not already in it)" > /dev/null 1>&2
 				echo "in a supported writable partition (e.g ext3, vfat)." > /dev/null 1>&2
 				;;
diff --git a/hooks/live b/hooks/live
index f2984f4..32adfb6 100755
--- a/hooks/live
+++ b/hooks/live
@@ -80,8 +80,9 @@ then
         manual_add_modules cifs
 fi
 
-# Filesystem: ext3
+# Filesystem: ext3/ext4
 manual_add_modules ext3
+manual_add_modules ext4
 
 # Filesystem: jffs2
 manual_add_modules jffs2
diff --git a/manpages/live-snapshot.en.1.txt b/manpages/live-snapshot.en.1.txt
index e2c6241..4ead532 100644
--- a/manpages/live-snapshot.en.1.txt
+++ b/manpages/live-snapshot.en.1.txt
@@ -63,7 +63,7 @@ power-off.
 
   -t, --type **TYPE**::
 
-Type could be one of "cpio", "squashfs", "ext2", "ext3" or "jffs2".
+Type could be one of "cpio", "squashfs", "ext2", "ext3", "ext4", or "jffs2".
 
   -h, --help::
 
diff --git a/scripts/live b/scripts/live
index bf90781..df104ef 100755
--- a/scripts/live
+++ b/scripts/live
@@ -502,7 +502,7 @@ is_live_path ()
 
 	if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
 	then
-		for FILESYSTEM in squashfs ext2 ext3 xfs dir jffs2
+		for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
 		do
 			if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
 			then
@@ -542,7 +542,7 @@ matches_uuid ()
 get_backing_device ()
 {
 	case "${1}" in
-		*.squashfs|*.ext2|*.ext3|*.jffs2)
+		*.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
 			echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
 			;;
 
@@ -579,6 +579,7 @@ mount_images_in_directory ()
 	if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
 		match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
 		match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
+		match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
 		match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
 		match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
 	then
@@ -919,7 +920,7 @@ find_snap ()
 	if [ "${PERSISTENT}" != "nofiles" ]
 	then
 		# search for image files
-		snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snap_label}.jffs2")
+		snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3 ${snal_label}.ext4 ${snap_label}.jffs2")
 	fi
 
 	if [ -z "${snapdata}" ]
@@ -951,9 +952,9 @@ try_snap ()
 			break
 		fi
 
-		if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|jffs2\)'
+		if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
 		then
-			# squashfs, jffs2 or ext2/ext3 snapshot
+			# squashfs, jffs2 or ext2/ext3/ext4 snapshot
 			dev=$(get_backing_device "${snapback}/${snapfile}")
 
 			do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
@@ -1058,7 +1059,7 @@ setup_unionfs ()
 		done
 	else
 		# ${MODULE}.module does not exist, create a list of images
-		for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
+		for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
 		do
 			for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
 			do
@@ -1071,7 +1072,7 @@ setup_unionfs ()
 
 		if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
 		then
-			for FILESYSTEM in squashfs ext2 ext3 xfs jffs2 dir
+			for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
 			do
 				for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
 				do
@@ -1195,7 +1196,7 @@ setup_unionfs ()
 		root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}")
 		# This second type should be removed when snapshot will get smarter,
 		# hence when "/etc/live-snapshot*list" will be supported also by
-		# ext2|ext3|jffs2 snapshot types.
+		# ext2|ext3|ext4|jffs2 snapshot types.
 		home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}")
 
 		if [ -b "${cowprobe}" ]
@@ -1427,6 +1428,7 @@ find_livefs ()
 		elif [ "${fstype}" = "squashfs" -o \
 			"${fstype}" = "ext2" -o \
 			"${fstype}" = "ext3" -o \
+			"${fstype}" = "ext4" -o \
 			"${fstype}" = "jffs2" ]
 		then
 			# This is an ugly hack situation, the block device has
diff --git a/scripts/live-helpers b/scripts/live-helpers
index 8970834..70897d6 100644
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -332,7 +332,7 @@ find_cow_device ()
 			fi
 
 			case "$(get_fstype ${devname})" in
-				vfat|ext2|ext3|jffs2)
+				vfat|ext2|ext3|ext4|jffs2)
 					mkdir -p "${cow_backing}"
 					if ! try_mount "${devname}" "${cow_backing}" "rw"
 					then