X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive-helpers;h=84d460bce61440622630c002877309ee707f5a36;hb=aabf655385c30cbcc6ab726f9a737b1ec446de98;hp=a935001509056e9775428d098953e06216e59a8a;hpb=990480f58dde1722f8ab87514b4443c1ea418b85;p=live-boot-grml.git

diff --git a/scripts/live-helpers b/scripts/live-helpers
index a935001..84d460b 100644
--- a/scripts/live-helpers
+++ b/scripts/live-helpers
@@ -6,10 +6,19 @@ then
 	export PATH="${PATH}:/usr/lib/klibc/bin"
 fi
 
+# handle upgrade path from old udev (using udevinfo) to
+# recent versions of udev (using udevadm info)
+if [ -x /sbin/udevadm ]
+then
+	udevinfo='/sbin/udevadm info'
+else
+	udevinfo='udevinfo'
+fi
+
 sys2dev ()
 {
 	sysdev=${1#/sys}
-	echo "/dev/$(udevinfo -q name -p ${sysdev} 2>/dev/null|| echo ${sysdev##*/})"
+	echo "/dev/$($udevinfo -q name -p ${sysdev} 2>/dev/null|| echo ${sysdev##*/})"
 }
 
 subdevices ()
@@ -67,25 +76,17 @@ is_supported_fs ()
 
 get_fstype ()
 {
-	local FSTYPE
-	local FSSIZE
-
-	# fstype misreports LUKS devices
-	if is_luks "${1}"
-	then
-	    /lib/udev/vol_id -t ${1} 2>/dev/null
-	    return
-	fi
-
-	eval $(fstype < ${1} 2>/dev/null)
-
-	if [ "${FSTYPE}" != "unknown" ]
+	# udev >=146-1 no longer provides vol_id:
+	if [ -x /lib/udev/vol_id ]
 	then
-		echo ${FSTYPE}
-		return 0
+		/lib/udev/vol_id -t ${1} 2>/dev/null
+	else
+		eval $(blkid -o udev "${1}")
+		if [ -n "$ID_FS_TYPE" ]
+		then
+			echo "${ID_FS_TYPE}"
+		fi
 	fi
-
-	/lib/udev/vol_id -t ${1} 2>/dev/null
 }
 
 where_is_mounted ()
@@ -95,7 +96,7 @@ where_is_mounted ()
 	if grep -q "^${device} " /proc/mounts
 	then
 		# return the first found
-		grep "^${device} " /proc/mounts | cut -f2 -d ' '
+		grep -m1 "^${device} " /proc/mounts | cut -f2 -d ' '
 	fi
 }
 
@@ -206,7 +207,7 @@ setup_loop ()
 			dev=$(sys2dev "${loopdev}")
 			options=''
 
-			if [ -n ${readonly} ]
+			if [ -n "${readonly}" ]
 			then
 				if losetup --help 2>&1 | grep -q -- "-r\b"
 				then
@@ -275,7 +276,11 @@ try_mount ()
 
 	if [ -n "${old_mountp}" ]
 	then
-		mount -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
+		if [ "${opts}" != "ro" ]
+		then
+			mount -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
+		fi
+
 		mount -o bind "${old_mountp}" "${mountp}" || panic "Cannot bind-mount ${old_mountp} on ${mountp}"
 	else
 		if [ -z "${fstype}" ]
@@ -295,6 +300,13 @@ find_cow_device ()
 	cow_backing="/${pers_label}-backing"
 	black_listed_devices="${2}"
 
+	if [ -z "${PERSISTENT_PATH}" ]
+	then
+		pers_fpath=${cow_backing}/${pers_label}
+	else
+		pers_fpath=${cow_backing}/${PERSISTENT_PATH}/${pers_label}
+	fi
+
 	for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram | grep -v fd)
 	do
 		for dev in $(subdevices "${sysblock}")
@@ -307,30 +319,71 @@ find_cow_device ()
 				break
 			fi
 
-			if [ "$(/lib/udev/vol_id -l ${devname} 2>/dev/null)" = "${pers_label}" ]
+			# Checking for a luks device
+			if [ "${PERSISTENT}" = "cryptsetup" ] && [ -e /sbin/cryptsetup ] && /sbin/cryptsetup isLuks ${devname}
+			then
+				while true
+				do
+					load_keymap
+
+					/lib/cryptsetup/askpass "Enter passphrase for ${pers_label} on ${devname}: " | /sbin/cryptsetup -T 1 luksOpen ${devname} $(basename ${devname}) --key-file=-
+					error=${?}
+
+					devname="/dev/mapper/$(basename ${devname})"
+
+					if [ 0 -eq ${error} ]
+					then
+						unset error
+						break
+					fi
+
+					echo
+					echo -n "There was an error decrypting ${devname} ... Retry? [Y/n] " >&6
+					read answer
+
+					if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
+					then
+						unset answer
+						break
+					fi
+				done
+			fi
+
+			# udev >=146-1 no longer provides vol_id:
+			if [ -x /lib/udev/vol_id ]
 			then
-				echo "${devname}"
-				return
+				if [ "$(/lib/udev/vol_id -l ${devname} 2>/dev/null)" = "${pers_label}" ]
+				then
+					echo "${devname}"
+					return 0
+				fi
+			else
+				eval $(blkid -o udev "${devname}")
+				if [ "$ID_FS_LABEL" = "${pers_label}" ]
+				then
+					echo "${devname}"
+					return 0
+				fi
 			fi
 
 			if [ "${PERSISTENT}" = "nofiles" ]
 			then
 				# do not mount the device to find for image files
 				# just skip this
-				break
+				continue
 			fi
 
 			case "$(get_fstype ${devname})" in
-				vfat|ext2|ext3|jffs2)
+				vfat|ext2|ext3|ext4|jffs2)
 					mkdir -p "${cow_backing}"
 					if ! try_mount "${devname}" "${cow_backing}" "rw"
 					then
 						break
 					fi
 
-					if [ -f "${cow_backing}/${pers_label}" ]
+					if [ -f "${pers_fpath}" ]
 					then
-						echo $(setup_loop "${cow_backing}/${pers_label}" "loop" "/sys/block/loop*")
+						echo $(setup_loop "${pers_fpath}" "loop" "/sys/block/loop*")
 						return 0
 					else
 						umount ${cow_backing}
@@ -341,6 +394,7 @@ find_cow_device ()
 			esac
 		done
 	done
+	return 1
 }
 
 find_files ()