fix filesystem detection for nandroid backup

sbin/postrecoveryboot.sh

@@ -2,7 +2,93 @@
 
 rm /etc
 mkdir /etc
-cat /res/etc/recovery.fstab > /etc/recovery.fstab
+
+sdcard_device='/dev/block/mmcblk0p1'
+cache_partition='/dev/block/stl11'
+dbdata_partition='/dev/block/stl10'
+data_partition='/dev/block/mmcblk0p2'
+system_partition='/dev/block/stl9'
+
+generate_cwm_fstab()
+{
+	for x in cache datadata data system; do
+		get_partition_for $x
+		get_fs_for $x
+		get_cwm_fstab_mount_option_for $fs
+		echo "$partition /$x $fs $cwm_mount_options" >> /etc/fstab
+		echo "/$x $fs $partition" >> /etc/recovery.fstab
+	done
+
+	# internal sdcard/USB Storage
+	echo "$sdcard_device /sdcard vfat rw,uid=1000,gid=1015,iocharset=iso8859-1,shortname=mixed,utf8" >> /etc/fstab
+	echo "/sdcard vfat $sdcard_device" >> /etc/recovery.fstab
+
+	# external sdcard/USB Storage
+	echo "/dev/block/mmcblk1p1 /sd-ext vfat rw,uid=1000,gid=1015,iocharset=iso8859-1,shortname=mixed,utf8" >> /etc/fstab
+	echo "/sd-ext vfat /dev/block/mmcblk1p1" >> /etc/recovery.fstab
+}
+
+detect_all_filesystems()
+{
+	system_fs=`detect_fs_on system`
+	dbdata_fs=`detect_fs_on dbdata`
+	cache_fs=`detect_fs_on cache`
+	data_fs=`detect_fs_on data`
+}
+
+detect_fs_on()
+{
+	resource=$1
+	get_partition_for $resource
+	log "filesystem detection on $resource:"
+	if /sbin/tune2fs -l $partition 1>&2; then
+		# we found an ext2/3/4 partition. but is it real ?
+		# if the data partition mounts as rfs, it means
+		# that this Ext4 partition is just lost bits still here
+		log "Ext4 on $partition" 1
+		echo ext4
+		return
+	fi
+	log "RFS on $partition" 1
+	echo rfs
+}
+
+get_partition_for()
+{
+	# resource partition getter which set a global variable named partition
+	case $1 in
+		cache)		partition=$cache_partition ;;
+		dbdata)		partition=$dbdata_partition ;;
+		datadata)	partition=$dbdata_partition ;;
+		data)		partition=$data_partition ;;
+		system)		partition=$system_partition ;;
+	esac
+}
+
+get_fs_for()
+{
+	# resource filesystem getter which set a global variable named fs
+	case $1 in
+		cache)		fs=$cache_fs ;;
+		dbdata)		fs=$dbdata_fs ;;
+		datadata)	fs=$dbdata_fs ;;
+		data)		fs=$data_fs ;;
+		system)		fs=$system_fs ;;
+	esac
+}
+
+get_cwm_fstab_mount_option_for()
+{
+	if test "$1" = "ext4"; then
+		cwm_mount_options='journal=ordered,nodelalloc'
+	else
+		cwm_mount_options='check=no'
+	fi
+}
+
+detect_all_filesystems
+
+generate_cwm_fstab
 
 rm /sdcard
 mkdir /sdcard