X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive-helpers;h=70c7f342a77243011b1370feb9b88d16e35e25f9;hb=f4238ae20312e1d36158ba70ac1076ba4da0211d;hp=b8b9cf182b3627392b80f7e1881e24bfcb159e27;hpb=212b6169a72a96af275b318f8e17f693f5cc060b;p=live-boot-grml.git

diff --git a/scripts/live-helpers b/scripts/live-helpers
index b8b9cf1..70c7f34 100644
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -1,4 +1,3 @@
-#!/bin/sh
 # live-initramfs helper functions, used by live-initramfs on boot and by live-snapshot
 
 if [ ! -x "/bin/fstype" ]
@@ -31,14 +30,37 @@ subdevices ()
 
 is_supported_fs ()
 {
-	# FIXME: do something better like the scan of supported filesystems
 	fstype="${1}"
 
-	case ${fstype} in
-		vfat|iso9660|udf|ext2|ext3|ntfs|jffs2)
+	# Validate input first
+	if [ -z "${fstype}" ]
+	then
+		return 1
+	fi
+
+	# 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
 }
@@ -124,7 +146,7 @@ fs_size ()
 			mountp="/mnt/tmp_fs_size"
 
 			mkdir -p "${mountp}"
-			mount -t $(get_fstype "${dev}") -o ro "${dev}" "${mountp}"
+			mount -n -t $(get_fstype "${dev}") -o ro "${dev}" "${mountp}"
 
 			doumount=1
 		fi
@@ -167,7 +189,15 @@ setup_loop ()
 	local readonly=${6}
 
 	modprobe -q -b "${module}"
-	udevsettle
+
+	if [ -x /sbin/udevadm ]
+	then
+		# lenny
+		udevadm settle
+	else
+		# etch
+		udevsettle
+	fi
 
 	for loopdev in ${pattern}
 	do
@@ -178,7 +208,7 @@ 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
@@ -244,10 +274,10 @@ try_mount ()
 
 	if [ -n "${old_mountp}" ]
 	then
-		mount -o remount,"${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 ${mountp}"
+		mount -n -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
+		mount -n -o bind "${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}"
+		mount -n -t $(get_fstype "${dev}") -o "${opts}" "${dev}" "${mountp}" || panic "Cannot mount ${dev} on ${mountp}"
 	fi
 }