X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive;h=95673018acf8c1f5076c31867c6f77f70ded71ca;hb=7c563d53a8726c6769a113045e5fae01bdc0a8a6;hp=7e748dcf68be3254aa15eec2a1a392214c6a93de;hpb=b0ed7d4fd478305f56314fbe58fd41a3df2dda3a;p=live-boot-grml.git

diff --git a/scripts/live b/scripts/live
index 7e748dc..9567301 100755
--- a/scripts/live
+++ b/scripts/live
@@ -18,12 +18,11 @@ home_snapshot_label="home-sn"
 USERNAME="user"
 USERFULLNAME="Live user"
 HOSTNAME="host"
-BUILD_SYSTEM="Custom"
 
 mkdir -p "${mountpoint}"
 
 [ -f /etc/live.conf ] && . /etc/live.conf
-export USERNAME USERFULLNAME HOSTNAME BUILD_SYSTEM
+export USERNAME USERFULLNAME HOSTNAME
 
 . /scripts/live-helpers
 
@@ -46,7 +45,7 @@ Arguments ()
 
 			console=*)
 				DEFCONSOLE="${ARGUMENT#*=}"
-				export DEFCONFSOLE
+				export DEFCONSOLE
 				;;
 
 			debug)
@@ -372,6 +371,11 @@ Arguments ()
 				export TORAM MODULETORAM
 				;;
 
+			exposedroot)
+				EXPOSED_ROOT="Yes"
+				export EXPOSED_ROOT
+				;;
+
 			union=*)
 				UNIONTYPE="${ARGUMENT#union=}"
 				export UNIONTYPE
@@ -618,7 +622,7 @@ do_netmount ()
 {
 	rc=1
 
-	modprobe "${MP_QUIET}" af_packet # For DHCP
+	modprobe -q af_packet # For DHCP
 
 	udevtrigger
 	udevsettle
@@ -688,7 +692,7 @@ do_nfsmount ()
 {
 	rc=1
 
-	modprobe "${MP_QUIET}" nfs
+	modprobe -q nfs
 
 	if [ -z "${NFSOPTS}" ]
 	then
@@ -721,7 +725,7 @@ do_cifsmount ()
 		fi
 
 		[ "${quiet}" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
-		modprobe "${MP_QUIET}" cifs
+		modprobe -q cifs
 
 		if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
 		then
@@ -762,7 +766,7 @@ do_snap_copy ()
 		if [ -n "${fstype}" ]
 		then
 			# Copying stuff...
-			mount -t "${fstype}" -o ro,noatime,nodiratime "${fromdev}" "${tomount}"
+			mount -t "${fstype}" -o ro,noatime "${fromdev}" "${tomount}"
 			cp -a "${tomount}"/* ${todir}
 			umount "${tomount}"
 		else
@@ -861,7 +865,7 @@ setup_unionfs ()
 	image_directory="${1}"
 	rootmnt="${2}"
 
-	modprobe "${MP_QUIET}" -b ${UNIONTYPE}
+	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,
@@ -938,7 +942,7 @@ setup_unionfs ()
 
 			mkdir -p "${croot}/${imagename}"
 			echo "debug: Can not mount backdev ${backdev} (image = ${image}) on croot/imagename ${croot}/${imagename}"
-			mount -t "${fstype}" -o ro,noatime,nodiratime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
+			mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount ${backdev} (${image}) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
 		fi
 	done
 
@@ -962,9 +966,40 @@ setup_unionfs ()
 		fi
 	fi
 
-	mount ${cowdevice} -t ${cow_fstype} -o rw,noatime,nodiratime /cow || panic "Can not mount ${cowdevice} on /cow"
+	rofscount=$(echo ${rofslist} |wc -w)
+
+	if [ -n "${EXPOSED_ROOT}" ]
+	then
+		if [ ${rofscount} -ne 1 ]
+		then
+			panic "only one RO file system supported with exposedroot: ${rofslist}"
+		fi
+		exposedrootfs=${rofslist%% }
+
+		mount --bind ${exposedrootfs} ${rootmnt} || \
+			panic "bind mount of ${exposedrootfs} failed"
+
+		mount ${cowdevice} -t ${cow_fstype} -o rw,noatime /cow || \
+			panic "Can not mount ${cowdevice} on /cow"
+
+		cow_dirs='/tmp /var/tmp /var/lock /var/run /var/log /var/spool
+			/home /live /var/lib/live'
 
-	mount -t ${UNIONTYPE} -o noatime,nodiratime,dirs=/cow=rw:${rofsstring} ${UNIONTYPE} "${rootmnt}" || panic "${UNIONTYPE} mount failed"
+		for dir in ${cow_dirs}; do
+			mkdir -p /cow${dir}
+			mount -t ${UNIONTYPE} \
+				-o rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro \
+				${UNIONTYPE} "${rootmnt}${dir}" || \
+				panic "mount ${UNIONTYPE} on ${rootmnt}${dir} failed with option \
+					rw,noatime,dirs=/cow${dir}=rw:${exposedrootfs}${dir}=ro"
+		done
+	else
+		mount ${cowdevice} -t ${cow_fstype} -o rw,noatime /cow || \
+			panic "Can not mount ${cowdevice} on /cow"
+		mount -t ${UNIONTYPE} -o noatime,dirs=/cow=rw:${rofsstring} \
+			${UNIONTYPE} "${rootmnt}" || panic "mount ${UNIONTYPE} on \
+			${rootmnt} failed with option noatime,dirs=/cow=rw:${rofsstring}"
+	fi
 
 	# Adding other custom mounts
 	if [ -n "${PERSISTENT}" ]
@@ -975,7 +1010,7 @@ setup_unionfs ()
 
 		if [ -b "${homecow}" ]
 		then
-			mount -t $(get_fstype "${homecow}") -o rw,noatime,nodiratime "${homecow}" "${rootmnt}/home"
+			mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
 			export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
 		else
 			[ "${quiet}" != "y" ] && log_warning_msg "Unable to find the persistent home medium"
@@ -1030,7 +1065,7 @@ check_dev ()
 
 	if is_supported_fs ${fstype}
 	then
-		mount -t ${fstype} -o ro,noatime,nodiratime "${devname}" ${mountpoint} || continue
+		mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
 
 		if is_live_path ${mountpoint} && \
 			([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})