X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive-helpers;h=e1f69dd7c95af0893aa9071b3b9f2aeda6098e7e;hb=2966454509093d7d83717b728585fcbb1da3e77e;hp=20952f3cce579782a1504c57f1a5d6feb0073132;hpb=824751b466aa756868883aa38cb8d0f1fc4c51bb;p=live-boot-grml.git

diff --git a/scripts/live-helpers b/scripts/live-helpers
index 20952f3..e1f69dd 100644
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -31,14 +31,31 @@ subdevices ()
 
 is_supported_fs ()
 {
-	# FIXME: do something better like the scan of supported filesystems
 	fstype="${1}"
 
-	case ${fstype} in
-		vfat|iso9660|udf|ext2|ext3|ntfs|jffs2)
+	# Try to look if it is already supported by the kernel
+	if grep -q ${fstype} /proc/filesystems
+	then
 		return 0
-		;;
-	esac
+	else
+		# Then try to add support for it the gentle way using the initramfs capabilities
+		modprobe ${fstype}
+		if grep -q ${fstype} /proc/filesystems
+		then
+			return 0
+		# Then try the hard way if /root is already reachable
+		else
+			kmodule="/root/lib/modules/`uname -r`/${fstype}/${fstype}.ko"
+			if [ -e "${kmodule}" ]
+			then
+				insmod "${kmodule}"
+				if grep -q ${fstype} /proc/filesystems
+				then
+					return 0
+				fi
+			fi
+		fi
+	fi
 
 	return 1
 }
@@ -72,12 +89,9 @@ where_is_mounted ()
 
 	if grep -q "^${device} " /proc/mounts
 	then
-		grep "^${device} " /proc/mounts | read d mountpoint rest
-		echo ${mountpoint}
-		return 0
+		# return the first found
+		grep "^${device} " /proc/mounts | cut -f2 -d ' '
 	fi
-
-	return 1
 }
 
 lastline ()
@@ -120,9 +134,9 @@ fs_size ()
 
 	if [ -z "${mountp}" ]
 	then
-		mountp=$(where_is_mounted "${dev}")
+		mountp="$(where_is_mounted ${dev})"
 
-		if [ "${?}" -gt 0 ]
+		if [ -z "${mountp}" ]
 		then
 			mountp="/mnt/tmp_fs_size"
 
@@ -181,7 +195,7 @@ setup_loop ()
 
 			if [ -n ${readonly} ]
 			then
-				if /sbin/losetup --help 2>&1 | grep -q -- "-r\b"
+				if losetup --help 2>&1 | grep -q -- "-r\b"
 				then
 					options="${options} -r"
 				fi
@@ -243,10 +257,12 @@ try_mount ()
 	mountp="${2}"
 	opts="${3}"
 
-	if where_is_mounted ${dev} > /dev/null
+	old_mountp="$(where_is_mounted ${dev})"
+
+	if [ -n "${old_mountp}" ]
 	then
-		mount -o remount,"${opts}" ${dev} $(where_is_mounted ${dev}) || panic "Remounting failed"
-		mount -o bind $(where_is_mounted ${dev}) ${mountp} || panic "Cannot bind-mount"
+		mount -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
+		mount -o bind "${old_mountp}" "${mountp}" || panic "Cannot bind-mount ${old_mountp} on ${mountp}"
 	else
 		mount -t $(get_fstype "${dev}") -o "${opts}" "${dev}" "${mountp}" || panic "Cannot mount ${dev} on ${mountp}"
 	fi