X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=components%2F9990-misc-helpers.sh;h=42518986f3bad4ea6d060ecde22b2306831a3321;hb=0a99e046af49be786db4c61831178fa388617cea;hp=245e9da1dd18b3b7af550a3436b59f94fdf657c7;hpb=068ba718731e7eb6c6ecabcbb2b7f676198a4ac4;p=live-boot-grml.git

diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh
index 245e9da..4251898 100755
--- a/components/9990-misc-helpers.sh
+++ b/components/9990-misc-helpers.sh
@@ -15,6 +15,42 @@ is_live_path()
 	return 1
 }
 
+grml_match_bootid()
+{
+	path="$1"
+
+	if [ -n "$IGNORE_BOOTID" ] ; then
+		echo " * Ignoring verification of bootid.txt as requested via ignore_bootid.">>/boot.log
+		return 0
+	fi
+
+	if [ -n "$BOOTID" ] && ! [ -r "${path}/conf/bootid.txt" ] ; then
+		echo "  * Warning: bootid=... specified but no bootid.txt found on currently requested device.">>/boot.log
+		return 1
+	fi
+
+	[ -r "${path}/conf/bootid.txt" ] || return 0
+
+	bootid_conf=$(cat "${path}/conf/bootid.txt")
+
+	if [ -z "$BOOTID" -a -z "$IGNORE_BOOTID" ]
+	then
+		echo " * Warning: bootid.txt found but ignore_bootid / bootid=.. bootoption missing...">>/boot.log
+		return 1
+	fi
+
+	if [ "$BOOTID" = "$bootid_conf" ]
+	then
+		echo " * Successfully verified /conf/bootid.txt from ISO, continuing... ">>/boot.log
+	else
+		echo " * Warning: BOOTID of ISO does not match. Retrying and continuing search...">>/boot.log
+		return 1
+	fi
+
+	return 0
+}
+
+
 matches_uuid ()
 {
 	if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
@@ -76,7 +112,7 @@ is_nice_device ()
 {
 	sysfs_path="${1#/sys}"
 
-	if udevadm test-builtin path_id "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-[^-]*-(ide|sas|scsi|usb|virtio)|platform-sata_mv|platform-orion-ehci|platform-mmc|platform-mxsdhci)"
+	if udevadm info --query=all --path="${sysfs_path}" | egrep -q "DEVTYPE=disk"
 	then
 		return 0
 	elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
@@ -161,7 +197,7 @@ check_dev ()
 				# Adding lvm support
 				if [ -x /scripts/local-top/lvm2 ]
 				then
-					ROOT="$device" resume="" /scripts/local-top/lvm2
+					ROOT="$device" resume="" /scripts/local-top/lvm2 >>/boot.log
 				fi
 				;;
 
@@ -169,10 +205,10 @@ check_dev ()
 				# Adding raid support
 				if [ -x /scripts/local-top/mdadm ]
 				then
-					cp /conf/conf.d/md /conf/conf.d/md.orig
+					[ -r /conf/conf.d/md ] && cp /conf/conf.d/md /conf/conf.d/md.orig
 					echo "MD_DEVS=$device " >> /conf/conf.d/md
-					/scripts/local-top/mdadm
-					mv /conf/conf.d/md.orig /conf/conf.d/md
+					/scripts/local-top/mdadm >>/boot.log
+					[ -r /conf/conf.d/md.orig ] && mv /conf/conf.d/md.orig /conf/conf.d/md
 				fi
 				;;
 		esac
@@ -214,7 +250,7 @@ check_dev ()
 		fi
 
 		if is_live_path ${mountpoint} && \
-			([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
+			([ "${skip_uuid_check}" ] || grml_match_bootid ${mountpoint})
 		then
 			echo ${mountpoint}
 			return 0
@@ -310,40 +346,12 @@ find_livefs ()
 					return 0
 				fi
 			done
-		elif [ "${fstype}" = "squashfs" -o \
-			"${fstype}" = "btrfs" -o \
-			"${fstype}" = "ext2" -o \
-			"${fstype}" = "ext3" -o \
-			"${fstype}" = "ext4" -o \
-			"${fstype}" = "jffs2" ]
-		then
-			# This is an ugly hack situation, the block device has
-			# an image directly on it.  It's hopefully
-			# live-boot, so take it and run with it.
-			ln -s "${devname}" "${devname}.${fstype}"
-			echo "${devname}.${fstype}"
-			return 0
 		fi
 	done
 
 	return 1
 }
 
-really_export ()
-{
-	STRING="${1}"
-	VALUE="$(eval echo -n \${$STRING})"
-
-	if [ -f /live.vars ] && grep -sq "export ${STRING}" /live.vars
-	then
-		sed -i -e 's/\('${STRING}'=\).*$/\1'${VALUE}'/' /live.vars
-	else
-		echo "export ${STRING}=\"${VALUE}\"" >> /live.vars
-	fi
-
-	eval export "${STRING}"="${VALUE}"
-}
-
 is_in_list_separator_helper ()
 {
 	local sep element list
@@ -441,7 +449,7 @@ is_supported_fs ()
 		return 0
 	else
 		# Then try to add support for it the gentle way using the initramfs capabilities
-		modprobe ${fstype}
+		modprobe -q -b ${fstype}
 		if grep -q ${fstype} /proc/filesystems
 		then
 			return 0
@@ -699,8 +707,9 @@ try_mount ()
 }
 
 # Try to mount $device to the place expected by live-boot. If $device
-# is already mounted somewhere, move it to the expected place. If
-# we're only probing $device (to check if it has custom persistence)
+# is already mounted somewhere, move it to the expected place. If $device
+# ends with a "/" this is a directory path.
+# If we're only probing $device (to check if it has custom persistence)
 # $probe should be set, which suppresses warnings upon failure. On
 # success, print the mount point for $device.
 mount_persistence_media ()
@@ -709,6 +718,20 @@ mount_persistence_media ()
 	device=${1}
 	probe=${2}
 
+	# get_custom_mounts() might call this with a directory path instead
+	# of a block device path. This means we have found sub-directory path
+	# underneath /lib/live/mounts/persistence, so we're done
+	if [ -d "${device}" ]
+	then
+		echo "${device}"
+		return 0
+	fi
+
+	if [ ! -b "${device}" ]
+	then
+		return 1
+	fi
+
 	backing="/live/persistence/$(basename ${device})"
 
 	mkdir -p "${backing}"
@@ -732,15 +755,24 @@ mount_persistence_media ()
 		fi
 	elif [ "${backing}" != "${old_backing}" ]
 	then
-		if mount --move ${old_backing} ${backing} >/dev/null
+		if ! mount --move ${old_backing} ${backing} >/dev/null
 		then
-			echo ${backing}
-			return 0
-		else
 			[ -z "${probe}" ] && log_warning_msg "Failed to move persistence media ${device}"
 			rmdir "${backing}"
 			return 1
 		fi
+		mount_opts="rw,noatime"
+		if [ -n "${PERSISTENCE_READONLY}" ]
+		then
+			mount_opts="ro,noatime"
+		fi
+		if ! mount -o "remount,${mount_opts}" "${backing}" >/dev/null
+		then
+			log_warning_msg "Failed to remount persistence media ${device} writable"
+			# Don't unmount or rmdir the new mountpoint in this case
+		fi
+		echo ${backing}
+		return 0
 	else
 		# This means that $device has already been mounted on
 		# the place expected by live-boot, so we're done.
@@ -794,9 +826,30 @@ open_luks_device ()
 
 	load_keymap
 
+	# check for plymouth
+	if [ -x /bin/plymouth ]
+	then
+		_PLYMOUTH="true"
+	fi
+
+	case "${_PLYMOUTH}" in
+		true)
+			plymouth --ping
+
+			cryptkeyscript="plymouth ask-for-password --prompt"
+			# Plymouth will add a : if it is a non-graphical prompt
+			cryptkeyprompt="Please unlock disk ${dev}"
+			;;
+
+		*)
+			cryptkeyscript="/lib/cryptsetup/askpass"
+			cryptkeyprompt="Please unlock disk ${dev}: "
+			;;
+	esac
+
 	while true
 	do
-		/lib/cryptsetup/askpass "Enter passphrase for ${dev}: " | \
+		$cryptkeyscript "$cryptkeyprompt" | \
 			/sbin/cryptsetup -T 1 luksOpen ${dev} ${name} ${opts}
 
 		if [ 0 -eq ${?} ]
@@ -807,11 +860,28 @@ open_luks_device ()
 		fi
 
 		echo >&6
-		echo -n "There was an error decrypting ${dev} ... Retry? [Y/n] " >&6
-		read answer
+		retryprompt="There was an error decrypting ${dev} ... Retry? [Y/n]"
+
+		case "${_PLYMOUTH}" in
+			true)
+				plymouth display-message --text "${retryprompt}"
+				answer=$(plymouth watch-keystroke --keys="YNyn")
+				;;
+
+			*)
+				echo -n "${retryprompt} " >&6
+				read answer
+				;;
+		esac
 
 		if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
 		then
+			case "${_PLYMOUTH}" in
+				true)
+					plymouth display-message --text ""
+					;;
+			esac
+
 			return 2
 		fi
 	done
@@ -890,7 +960,7 @@ probe_for_file_name ()
 
 	for label in ${overlays}
 	do
-		path=${backing}/${PERSISTENCE_PATH}${label}
+		path=${backing}/${PERSISTENCE_PATH}/${label}
 		if [ -f "${path}" ]
 		then
 			local loopdev
@@ -909,6 +979,39 @@ probe_for_file_name ()
 	fi
 }
 
+probe_for_directory_name ()
+{
+	local overlays dev ret backing
+	overlays="${1}"
+	dev="${2}"
+
+	ret=""
+	backing="$(mount_persistence_media ${dev} probe)"
+	if [ -z "${backing}" ]
+	then
+	    return
+	fi
+
+	for label in ${overlays}
+	do
+		path=${backing}/${PERSISTENCE_PATH}/${label}
+		if [ -d "${path}" ]
+		then
+			# in this case the "device" ends with a "/"
+			ret="${ret} ${label}=${backing}/${PERSISTENCE_PATH}/${label%%/}/"
+		fi
+	done
+
+	if [ -n "${ret}" ]
+	then
+		echo ${ret}
+	else
+		# unmount and remove mountpoint
+		umount ${backing} > /dev/null 2>&1 || true
+		rmdir ${backing} > /dev/null 2>&1 || true
+	fi
+}
+
 find_persistence_media ()
 {
 	# Scans devices for overlays, and returns a whitespace
@@ -933,7 +1036,17 @@ find_persistence_media ()
 	white_listed_devices="${2}"
 	ret=""
 
-	black_listed_devices="$(what_is_mounted_on /live/medium) $(what_is_mounted_on /live/findiso) $(what_is_mounted_on /live/fromiso)"
+	#
+	# The devices that are hosting the actual live rootfs should not be
+	# used for persistence storage since otherwise you might mount a
+	# parent directory on top of a sub-directory of the same filesystem
+	# in one union together.
+	#
+	black_listed_devices=""
+	for d in /live/rootfs/* /live/findiso /live/fromiso
+	do
+		black_listed_devices="${black_listed_devices} $(what_is_mounted_on d)"
+	done
 
 	for dev in $(storage_devices "${black_listed_devices}" "${white_listed_devices}")
 	do
@@ -1004,6 +1117,17 @@ find_persistence_media ()
 			fi
 		fi
 
+		# Probe for directory with matching name on mounted partition
+		if is_in_comma_sep_list directory ${PERSISTENCE_STORAGE}
+		then
+			result=$(probe_for_directory_name "${overlays}" ${dev})
+			if [ -n "${result}" ]
+			then
+				ret="${ret} ${result}"
+				continue
+			fi
+		fi
+
 		# Close luks device if it isn't used
 		if [ -z "${result}" ] && [ -n "${luks_device}" ] && is_active_luks_mapping "${luks_device}"
 		then
@@ -1191,23 +1315,8 @@ do_union ()
 			rw_opt="rw"
 			ro_opt="rr+wh"
 			noxino_opt="noxino"
-			;;
 
-		unionfs-fuse)
-			rw_opt="RW"
-			ro_opt="RO"
-			;;
-
-		*)
-			rw_opt="rw"
-			ro_opt="ro"
-			;;
-	esac
-
-	case "${UNIONTYPE}" in
-		unionfs-fuse)
-			unionmountopts="-o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid"
-			unionmountopts="${unionmountopts} ${unionrw}=${rw_opt}"
+			unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
 			if [ -n "${unionro}" ]
 			then
 				for rofs in ${unionro}
@@ -1215,38 +1324,29 @@ do_union ()
 					unionmountopts="${unionmountopts}:${rofs}=${ro_opt}"
 				done
 			fi
-			( sysctl -w fs.file-max=391524 ; ulimit -HSn 16384
-			unionfs-fuse ${unionmountopts} "${unionmountpoint}" ) && \
-			( mkdir -p /run/sendsigs.omit.d
-			pidof unionfs-fuse >> /run/sendsigs.omit.d/unionfs-fuse || true )
 			;;
 
-		overlayfs)
-			# XXX: can multiple unionro be used? (overlayfs only handles two dirs, but perhaps they can be chained?)
-			# XXX: and can unionro be optional? i.e. can overlayfs skip lowerdir?
+		overlay)
+			# XXX: can multiple unionro be used? (overlay only handles two dirs, but perhaps they can be chained?)
+			# XXX: and can unionro be optional? i.e. can overlay skip lowerdir?
 			if echo ${unionro} | grep -q " "
 			then
-				panic "Multiple lower filesystems are currently not supported with overlayfs (unionro = ${unionro})."
+				panic "Multiple lower filesystems are currently not supported with overlay (unionro = ${unionro})."
 			elif [ -z "${unionro}"	]
 			then
-				panic "Overlayfs needs at least one lower filesystem (read-only branch)."
+				panic "overlay needs at least one lower filesystem (read-only branch)."
 			fi
-			unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}"
-			mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
-			;;
-
-		*)
-			unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
-			if [ -n "${unionro}" ]
-			then
-				for rofs in ${unionro}
-				do
-					unionmountopts="${unionmountopts}:${rofs}=${ro_opt}"
-				done
-			fi
-			mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
+			# overlayfs requires:
+			# + a workdir to become mounted
+			# + workdir and upperdir to reside under the same mount
+			# + workdir and upperdir to be in separate directories
+			mkdir "${unionrw}/rw"
+			mkdir "${unionrw}/work"
+			unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}/rw,workdir=${unionrw}/work"
 			;;
 	esac
+
+	mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
 }
 
 get_custom_mounts ()
@@ -1265,11 +1365,6 @@ get_custom_mounts ()
 
 	for device in ${devices}
 	do
-		if [ ! -b "${device}" ]
-		then
-			continue
-		fi
-
 		local device_name backing include_list
 		device_name="$(basename ${device})"
 		backing=$(mount_persistence_media ${device})
@@ -1319,7 +1414,7 @@ get_custom_mounts ()
 					union|bind)
 						;;
 					*)
-						log_warning_msg "Skipping custom mount with unkown option: ${opt}"
+						log_warning_msg "Skipping custom mount with unknown option: ${opt}"
 						continue 2
 						;;
 				esac
@@ -1364,7 +1459,7 @@ get_custom_mounts ()
 	prev_dest=""
 	# This sort will ensure that a source /a comes right before a source
 	# /a/b so we only need to look at the previous source
-	sort -k2 -b ${custom_mounts} |
+	[ -e ${custom_mounts} ] && sort -k2 -b ${custom_mounts} |
 	while read device source dest options
 	do
 		if echo ${source} | grep -qe "^${prev_source}\(/.*\)\?$"