X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=components%2F9990-overlay.sh;h=8350502460d9bead4f9cb68d5227887368eefcd8;hb=HEAD;hp=92d0355da57958557ee28c0a69031a735b9968b7;hpb=73d837abfd95add4e0792ef27df8c7eea8a7388f;p=live-boot-grml.git

diff --git a/components/9990-overlay.sh b/components/9990-overlay.sh
index 92d0355..8350502 100755
--- a/components/9990-overlay.sh
+++ b/components/9990-overlay.sh
@@ -8,19 +8,14 @@ setup_unionfs ()
 	rootmnt="${2}"
 	addimage_directory="${3}"
 
+	modprobe -q -b ${UNIONTYPE}
+
 	if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$"
 	then
 		panic "${UNIONTYPE} not available."
 	fi
 
-	modprobe -q -b ${UNIONTYPE}
-
-	# run-init can't deal with images in a subdir, but we're going to
-	# move all of these away before it runs anyway.  No, we're not,
-	# put them in / since move-mounting them into / breaks mono and
-	# some other apps.
-
-	croot="/"
+	croot="/run/live/rootfs"
 
 	# Let's just mount the read-only file systems first
 	rootfslist=""
@@ -110,13 +105,15 @@ setup_unionfs ()
 						;;
 				esac
 
-				mpoint="${croot}/${imagename}"
+				mpoint=$(trim_path "${croot}/${imagename}")
 				rootfslist="${mpoint} ${rootfslist}"
 
 				mkdir -p "${mpoint}"
 				log_begin_msg "Mounting \"${image}\" on \"${mpoint}\" via \"${backdev}\""
 				mount -t "${fstype}" -o ro,noatime "${backdev}" "${mpoint}" || panic "Can not mount ${backdev} (${image}) on ${mpoint}"
 				log_end_msg
+			else
+				log_warning_msg "Could not find image '${image}'. Most likely it is listed in a .module file, perhaps by mistake."
 			fi
 		done
 	else
@@ -133,8 +130,7 @@ setup_unionfs ()
 
 	# tmpfs file systems
 	touch /etc/fstab
-	mkdir -p /live/overlay
-	mount -t tmpfs tmpfs /live/overlay
+	mkdir -p /run/live/overlay
 
 	# Looking for persistence devices or files
 	if [ -n "${PERSISTENCE}" ] && [ -z "${NOPERSISTENCE}" ]
@@ -199,12 +195,15 @@ setup_unionfs ()
 			do
 				media="$(echo ${media} | tr ":" " ")"
 
-				case ${media} in
-					${custom_overlay_label}=*)
-						device="${media#*=}"
-						overlay_devices="${overlay_devices} ${device}"
-						;;
-				 esac
+				for overlay_label in ${custom_overlay_label}
+				do
+					case ${media} in
+						${overlay_label}=*)
+							device="${media#*=}"
+							overlay_devices="${overlay_devices} ${device}"
+							;;
+					esac
+				done
 			done
 		fi
 	elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENCE}" ]
@@ -238,16 +237,16 @@ setup_unionfs ()
 	then
 		cowdevice="tmpfs"
 		cow_fstype="tmpfs"
-		cow_mountopt="rw,noatime,mode=755"
+		cow_mountopt="rw,noatime,mode=755,size=${OVERLAY_SIZE:-50%}"
 	fi
 
 	if [ -n "${PERSISTENCE_READONLY}" ] && [ "${cowdevice}" != "tmpfs" ]
 	then
-		mount -t tmpfs -o rw,noatime,mode=755 tmpfs "/live/overlay"
-		root_backing="/live/persistence/$(basename ${cowdevice})-root"
+		mount -t tmpfs -o rw,noatime,mode=755,size=${OVERLAY_SIZE:-50%} tmpfs "/run/live/overlay"
+		root_backing="/run/live/persistence/$(basename ${cowdevice})-root"
 		mkdir -p ${root_backing}
 	else
-		root_backing="/live/overlay"
+		root_backing="/run/live/overlay"
 	fi
 
 	if [ "${cow_fstype}" = "nfs" ]
@@ -272,7 +271,7 @@ setup_unionfs ()
 			panic "only one RO file system supported with exposedroot: ${rootfslist}"
 		fi
 
-		mount --bind ${rootfs} ${rootmnt} || \
+		mount -o bind ${rootfs} ${rootmnt} || \
 			panic "bind mount of ${rootfs} failed"
 
 		if [ -z "${SKIP_UNION_MOUNTS}" ]
@@ -286,9 +285,9 @@ setup_unionfs ()
 	fi
 
 	for dir in ${cow_dirs}; do
-		unionmountpoint="${rootmnt}${dir}"
+		unionmountpoint=$(trim_path "${rootmnt}${dir}")
 		mkdir -p ${unionmountpoint}
-		cow_dir="/live/overlay${dir}"
+		cow_dir=$(trim_path "/run/live/overlay${dir}")
 		rootfs_dir="${rootfs}${dir}"
 		mkdir -p ${cow_dir}
 		if [ -n "${PERSISTENCE_READONLY}" ] && [ "${cowdevice}" != "tmpfs" ]
@@ -311,21 +310,11 @@ setup_unionfs ()
 		chmod 1777 "${rootmnt}"/tmp
 	fi
 
-	live_rootfs_list=""
-	for d in ${rootfslist}
-	do
-		live_rootfs="/live/rootfs/${d##*/}"
-		live_rootfs_list="${live_rootfs_list} ${live_rootfs}"
-		mkdir -p "${live_rootfs}"
-		case "${d}" in
-			*.dir)
-				# do nothing # mount -o bind "${d}" "${live_rootfs}"
-				;;
-			*)
-				mount -o move "${d}" "${live_rootfs}"
-				;;
-		esac
-	done
+	# Correct the permission of /var/tmp:
+	if [ -d "${rootmnt}/var/tmp" ]
+	then
+		chmod 1777 "${rootmnt}"/var/tmp
+	fi
 
 	# Adding custom persistence
 	if [ -n "${PERSISTENCE}" ] && [ -z "${NOPERSISTENCE}" ]
@@ -337,7 +326,7 @@ setup_unionfs ()
 		# Gather information about custom mounts from devies detected as overlays
 		get_custom_mounts ${custom_mounts} ${overlay_devices}
 
-		[ -n "${LIVE_BOOT_DEBUG}" ] && cp ${custom_mounts} "/lib/live/mount/persistence"
+		[ -n "${LIVE_BOOT_DEBUG}" ] && cp ${custom_mounts} "/run/live/persistence"
 
 		# Now we do the actual mounting (and symlinking)
 		local used_overlays
@@ -354,9 +343,4 @@ setup_unionfs ()
 			fi
 		done
 	fi
-
-        # ensure that a potentially stray tmpfs gets removed
-        # otherways, initramfs-tools is unable to remove /live
-        # and fails to boot
-        umount /live/overlay > /dev/null 2>&1 || true
 }