- skel-root/hd51: rework mdev-mmcblk script to mount swap- and storage-partition

skel-root/armbox/hd51/lib/mdev/fs/mdev-mmcblk

@@ -11,55 +11,46 @@ K_PARTNAME=""
 ROOTFSDEV=""
 R_PARTNAME=""
 ROOTSUBDIR=""
-NEWLAYOUT=0
-# to use partnames in old layout, set it to 1
+SUBDIRBOOT=0
+# to use partition names in non-subdirboot layout, set it to 1
 USE_PARTNAMES=0
-#
-check_mmcblk()
-{
-devname=""
-partname=""
-for i in $BLOCKS;do
-	if [ "$i" != "$BLOCKS" ];then
-		devname=$(cat $i | grep DEVNAME | cut -d '=' -f 2)
-		if [ "$devname" == "$MDEV" ];then
-			partname=$(cat $i | grep PARTNAME | cut -d '=' -f 2)
-			if [ -n "$(echo $partname | grep 'kernel')" ];then
-				KERNELDEV=$devname
-				K_PARTNAME=$partname
+
+# check partition names
+DEVNAME=""
+PARTNAME=""
+for i in $BLOCKS; do
+	if [ "$i" != "$BLOCKS" ]; then
+		DEVNAME=$(cat $i | grep DEVNAME | cut -d '=' -f 2)
+		if [ "$DEVNAME" == "$MDEV" ]; then
+			PARTNAME=$(cat $i | grep PARTNAME | cut -d '=' -f 2)
+			if [ -n "$(echo $PARTNAME | grep 'kernel')" ]; then
+				KERNELDEV=$DEVNAME
+				K_PARTNAME=$PARTNAME
 				break
-			elif [ -n "$(echo $partname | grep 'rootfs')" ];then
-				ROOTFSDEV=$devname
-				R_PARTNAME=$partname
-				if [ -n "$(echo $partname | grep 'linuxrootfs')" ];then
-					NEWLAYOUT=1
+			elif [ -n "$(echo $PARTNAME | grep 'rootfs')" ]; then
+				ROOTFSDEV=$DEVNAME
+				R_PARTNAME=$PARTNAME
+				if [ -n "$(echo $PARTNAME | grep 'linuxrootfs')" ]; then
 					R_PARTNAME="linuxrootfs1"
+					SUBDIRBOOT=1
 				fi
 				break
-			elif [ -n "$(echo $partname | grep 'userdata')" ];then
-				ROOTFSDEV=$devname
-				R_PARTNAME=$partname
-				NEWLAYOUT=1
+			elif [ -n "$(echo $PARTNAME | grep 'userdata')" ]; then
+				ROOTFSDEV=$DEVNAME
+				R_PARTNAME=$PARTNAME
+				SUBDIRBOOT=1
 				break
 			fi
 		fi
 	fi
 done
-[ "$partname" == "swap" -o "$partname" == "swapdata" ] && exit 0
-[ "$NEWLAYOUT" == "1" -o "$USE_PARTNAMES" == "1" ] && MOUNTPOINT="$MOUNTBASE/$R_PARTNAME"
-}
-#
-read_cmdline()
-{
-for param in $(cat /proc/cmdline);do
-	if [ -n "$(echo $param | grep rootsubdir)" ];then
-		ROOTSUBDIR=$(echo $param | cut -d '=' -f 2)
-		break
-	fi
-done
-}
-# check partition names
-check_mmcblk
+
+if [ "$SUBDIRBOOT" == "1" -o "$USE_PARTNAMES" == "1" ]; then
+	MOUNTPOINT="$MOUNTBASE/$R_PARTNAME"
+elif [ "$PARTNAME" == "storage" ]; then
+	MOUNTPOINT="$MOUNTBASE/$PARTNAME"
+fi
+
 # do not add or remove root device again...
 [ "$ROOTDEV" = "$MDEV" -a "$R_PARTNAME" != "userdata" ] && exit 0
 
@@ -71,12 +62,18 @@ fi
 case "$ACTION" in
 	add)
 		# do not mount kernel partitions
-		if [ "$KERNELDEV" == "$MDEV" ];then
+		if [ "$KERNELDEV" == "$MDEV" ]; then
 			LOGINFO "[$ACTION] /dev/$MDEV is a kernel partition [$K_PARTNAME] - not mounting."
 			exit 0
 		fi
-		# TODO: check for partitions
-		if [ "$NEWLAYOUT" == "1" ];then
+
+		if [ "$PARTNAME" == "swap" ]; then
+			mkswap /dev/$MDEV
+			swapon /dev/$MDEV
+			exit 0
+		fi
+
+		if [ "$SUBDIRBOOT" == "1" ]; then
 			if grep -q $MOUNTPOINT /proc/mounts; then
 				LOGINFO "/dev/$MDEV already mounted [$R_PARTNAME] - not mounting again"
 				exit 0
@@ -85,16 +82,22 @@ case "$ACTION" in
 			mount -t auto /dev/$MDEV /tmp/$MDEV 2>&1 >/dev/null
 			RET=$?
 			[ $RET != 0 ] && LOGWARN "mount /dev/$MDEV to /tmp/$MDEV failed with $RET" && rmdir /tmp/$MDEV
-			if [ "$R_PARTNAME" == "linuxrootfs1" ];then
+			if [ "$R_PARTNAME" == "linuxrootfs1" ]; then
 				LOGINFO "mounting /dev/$MDEV [$R_PARTNAME] to $MOUNTPOINT"
 				mkdir -p $MOUNTPOINT
 				mount --bind /tmp/$MDEV/linuxrootfs1 $MOUNTPOINT
-			elif [ "$R_PARTNAME" == "userdata" ];then
+			elif [ "$R_PARTNAME" == "userdata" ]; then
 				# parse cmdline for rootsubdir
-				read_cmdline
-				for i in /tmp/$MDEV/*;do
-					if [ -n "$(echo $i | grep linuxrootfs)" ];then
-						if [ "$ROOTSUBDIR" == "$(basename $i)" ];then
+				for param in $(cat /proc/cmdline); do
+					if [ -n "$(echo $param | grep rootsubdir)" ]; then
+						ROOTSUBDIR=$(echo $param | cut -d '=' -f 2)
+						break
+					fi
+				done
+
+				for i in /tmp/$MDEV/*; do
+					if [ -n "$(echo $i | grep linuxrootfs)" ]; then
+						if [ "$ROOTSUBDIR" == "$(basename $i)" ]; then
 							LOGINFO "/dev/$MDEV rootsubdir [$ROOTSUBDIR] is already mounted as root"
 							continue
 						fi