X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=components%2F9990-misc-helpers.sh;h=42518986f3bad4ea6d060ecde22b2306831a3321;hb=0a99e046af49be786db4c61831178fa388617cea;hp=fcd2b07c365e8d1f026f92833413ec136ca23ece;hpb=ec9bd07c900e13d606445518a87e0326902d5815;p=live-boot-grml.git

diff --git a/components/9990-misc-helpers.sh b/components/9990-misc-helpers.sh
index fcd2b07..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 ]
@@ -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 ${mountpoint}
 			return 0
@@ -310,19 +346,6 @@ find_livefs ()
 					return 0
 				fi
 			done
-		elif [ "${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
 
@@ -1292,15 +1315,17 @@ do_union ()
 			rw_opt="rw"
 			ro_opt="rr+wh"
 			noxino_opt="noxino"
-			;;
 
-		*)
-			rw_opt="rw"
-			ro_opt="ro"
+			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
 			;;
-	esac
 
-	case "${UNIONTYPE}" in
 		overlay)
 			# XXX: can multiple unionro be used? (overlay only handles two dirs, but perhaps they can be chained?)
 			# XXX: and can unionro be optional? i.e. can overlay skip lowerdir?
@@ -1311,22 +1336,17 @@ do_union ()
 			then
 				panic "overlay needs at least one lower filesystem (read-only branch)."
 			fi
-			unionmountopts="-o noatime,lowerdir=${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 ()