X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Fboot%2Fmisc-helpers.sh;h=cc39fcbb230984b267b9d4f1ded11f126c98bc36;hb=b77506cb1f7c478c44886b3795e6bcc992566763;hp=897032752a86eb5d6163cc215c9d73c529825f87;hpb=c39c7e99d9ac6ff9907aebb7626fb606b232721e;p=live-boot-grml.git

diff --git a/scripts/boot/misc-helpers.sh b/scripts/boot/misc-helpers.sh
index 8970327..cc39fcb 100755
--- a/scripts/boot/misc-helpers.sh
+++ b/scripts/boot/misc-helpers.sh
@@ -81,7 +81,6 @@ mount_images_in_directory ()
 	rootmnt="${2}"
 	mac="${3}"
 
-
 	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" ||
@@ -377,7 +376,8 @@ really_export ()
 	eval export "${STRING}"="${VALUE}"
 }
 
-is_in_list_separator_helper () {
+is_in_list_separator_helper ()
+{
 	local sep=${1}
 	shift
 	local element=${1}
@@ -386,13 +386,15 @@ is_in_list_separator_helper () {
 	echo ${list} | grep -qe "^\(.*${sep}\)\?${element}\(${sep}.*\)\?$"
 }
 
-is_in_space_sep_list () {
+is_in_space_sep_list ()
+{
 	local element=${1}
 	shift
 	is_in_list_separator_helper "[[:space:]]" "${element}" "${*}"
 }
 
-is_in_comma_sep_list () {
+is_in_comma_sep_list ()
+{
 	local element=${1}
 	shift
 	is_in_list_separator_helper "," "${element}" "${*}"
@@ -501,10 +503,11 @@ where_is_mounted ()
 	grep -m1 "^${device} " /proc/mounts | cut -f2 -d ' '
 }
 
-trim_path () {
-    # remove all unnecessary /:s in the path, including last one (except
-    # if path is just "/")
-    echo ${1} | sed 's|//\+|/|g' | sed 's|^\(.*[^/]\)/$|\1|'
+trim_path ()
+{
+	# remove all unnecessary /:s in the path, including last one (except
+	# if path is just "/")
+	echo ${1} | sed 's|//\+|/|g' | sed 's|^\(.*[^/]\)/$|\1|'
 }
 
 what_is_mounted_on ()
@@ -761,7 +764,8 @@ mount_persistence_media ()
 	return 0
 }
 
-close_persistence_media () {
+close_persistence_media ()
+{
 	local device=${1}
 	local backing="$(where_is_mounted ${device})"
 
@@ -842,8 +846,7 @@ is_gpt_device ()
 probe_for_gpt_name ()
 {
 	local overlays="${1}"
-	local snapshots="${2}"
-	local dev="${3}"
+	local dev="${2}"
 
 	local gpt_dev="${dev}"
 	if is_active_luks_mapping ${dev}
@@ -859,7 +862,7 @@ probe_for_gpt_name ()
 	fi
 
 	local gpt_name=$(get_gpt_name ${gpt_dev})
-	for label in ${overlays} ${snapshots}
+	for label in ${overlays}
 	do
 		if [ "${gpt_name}" = "${label}" ]
 		then
@@ -871,10 +874,9 @@ probe_for_gpt_name ()
 probe_for_fs_label ()
 {
 	local overlays="${1}"
-	local snapshots="${2}"
-	local dev="${3}"
+	local dev="${2}"
 
-	for label in ${overlays} ${snapshots}
+	for label in ${overlays}
 	do
 		if [ "$(/sbin/blkid -s LABEL -o value $dev 2>/dev/null)" = "${label}" ]
 		then
@@ -886,8 +888,7 @@ probe_for_fs_label ()
 probe_for_file_name ()
 {
 	local overlays="${1}"
-	local snapshots="${2}"
-	local dev="${3}"
+	local dev="${2}"
 
 	local ret=""
 	local backing="$(mount_persistence_media ${dev} probe)"
@@ -905,17 +906,6 @@ probe_for_file_name ()
 			ret="${ret} ${label}=${loopdev}"
 		fi
 	done
-	for label in ${snapshots}
-	do
-		for ext in squashfs cpio.gz ext2 ext3 ext4 jffs2
-		do
-			path="${PERSISTENCE_PATH}${label}.${ext}"
-			if [ -f "${backing}/${path}" ]
-			then
-				ret="${ret} ${label}=${dev}:${backing}:${path}"
-			fi
-		done
-	done
 
 	if [ -n "${ret}" ]
 	then
@@ -927,19 +917,15 @@ probe_for_file_name ()
 
 find_persistence_media ()
 {
-	# Scans devices for overlays and snapshots, and returns a whitespace
+	# Scans devices for overlays, and returns a whitespace
 	# separated list of how to use them. Only overlays with a partition
-	# label or file name in ${overlays} are returned, and ditto for
-	# snapshots with labels in ${snapshots}.
+	# label or file name in ${overlays} are returned.
 	#
 	# When scanning a LUKS device, the user will be asked to enter the
 	# passphrase; on failure to enter it, or if no persistence partitions
 	# or files were found, the LUKS device is closed.
 	#
-	# For a snapshot file the return value is ${label}=${snapdata}", where
-	# ${snapdata} is the parameter used for try_snap().
-	#
-	# For all other cases (overlay/snapshot partition and overlay file) the
+	# For all other cases (overlay partition and overlay file) the
 	# return value is "${label}=${device}", where ${device} a device that
 	# can mount the content. In the case of an overlay file, the device
 	# containing the file will remain mounted as a side-effect.
@@ -949,8 +935,7 @@ find_persistence_media ()
 	# scanned.
 
 	local overlays="${1}"
-	local snapshots="${2}"
-	local white_listed_devices="${3}"
+	local white_listed_devices="${2}"
 	local ret=""
 
 	local black_listed_devices="$(what_is_mounted_on /live/image)"
@@ -964,8 +949,7 @@ find_persistence_media ()
 		# in order to probe any filesystem it contains, like we do
 		# below. activate_custom_mounts() also depends on that any luks
 		# device already has been opened.
-		if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && \
-		   is_luks_partition ${dev}
+		if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && is_luks_partition ${dev}
 		then
 			if luks_device=$(open_luks_device "${dev}")
 			then
@@ -983,14 +967,14 @@ find_persistence_media ()
 		# Probe for matching GPT partition names or filesystem labels
 		if is_in_comma_sep_list filesystem ${PERSISTENCE_STORAGE}
 		then
-			result=$(probe_for_gpt_name "${overlays}" "${snapshots}" ${dev})
+			result=$(probe_for_gpt_name "${overlays}" ${dev})
 			if [ -n "${result}" ]
 			then
 				ret="${ret} ${result}"
 				continue
 			fi
 
-			result=$(probe_for_fs_label "${overlays}" "${snapshots}" ${dev})
+			result=$(probe_for_fs_label "${overlays}" ${dev})
 			if [ -n "${result}" ]
 			then
 				ret="${ret} ${result}"
@@ -1001,7 +985,7 @@ find_persistence_media ()
 		# Probe for files with matching name on mounted partition
 		if is_in_comma_sep_list file ${PERSISTENCE_STORAGE}
 		then
-			result=$(probe_for_file_name "${overlays}" "${snapshots}" ${dev})
+			result=$(probe_for_file_name "${overlays}" ${dev})
 			if [ -n "${result}" ]
 			then
 				ret="${ret} ${result}"
@@ -1010,8 +994,7 @@ find_persistence_media ()
 		fi
 
 		# Close luks device if it isn't used
-		if [ -z "${result}" ] && [ -n "${luks_device}" ] && \
-		   is_active_luks_mapping "${luks_device}"
+		if [ -z "${result}" ] && [ -n "${luks_device}" ] && is_active_luks_mapping "${luks_device}"
 		then
 			/sbin/cryptsetup luksClose "${luks_device}"
 		fi
@@ -1053,7 +1036,8 @@ is_active_luks_mapping ()
 	/sbin/cryptsetup status "${device}" 1>/dev/null 2>&1
 }
 
-get_luks_backing_device () {
+get_luks_backing_device ()
+{
 	device=${1}
 	cryptsetup status ${device} 2> /dev/null | \
 		awk '{if ($1 == "device:") print $2}'
@@ -1150,7 +1134,9 @@ link_files ()
 		return
 	fi
 
-	find "${src_dir}" -mindepth 1 -maxdepth 1 | while read src; do
+	find "${src_dir}" -mindepth 1 -maxdepth 1 | \
+	while read src
+	do
 		local dest="${dest_dir}$(basename "${src}")"
 		if [ -d "${src}" ]
 		then
@@ -1185,19 +1171,23 @@ do_union ()
 	local unionro1="${3}"		# first underlying read-only branch (optional)
 	local unionro2="${4}"		# second underlying read-only branch (optional)
 
-	if [ "${UNIONTYPE}" = "aufs" ]
-	then
-		rw_opt="rw"
-		ro_opt="rr+wh"
-		noxino_opt="noxino"
-	elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
-	then
-		rw_opt="RW"
-		ro_opt="RO"
-	else
-		rw_opt="rw"
-		ro_opt="ro"
-	fi
+	case "${UNIONTYPE}" in
+		aufs)
+			rw_opt="rw"
+			ro_opt="rr+wh"
+			noxino_opt="noxino"
+			;;
+
+		unionfs-fuse)
+			rw_opt="RW"
+			ro_opt="RO"
+			;;
+
+		*)
+			rw_opt="rw"
+			ro_opt="ro"
+			;;
+	esac
 
 	case "${UNIONTYPE}" in
 		unionfs-fuse)