X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Fboot%2F9990-overlay.sh;h=80b5726a92f84fd483f8dd00216ae70b5dc0e9e0;hb=04ecb83516c5795cf4a1da19cf73b90ebd8d2747;hp=b54a2da00f60f32375fb083d55b0ca87c5c86010;hpb=77dab1cb394c5fc2b9a848c6297d24f65a3b8259;p=live-boot-grml.git

diff --git a/scripts/boot/9990-overlay.sh b/scripts/boot/9990-overlay.sh
index b54a2da..80b5726 100755
--- a/scripts/boot/9990-overlay.sh
+++ b/scripts/boot/9990-overlay.sh
@@ -189,49 +189,58 @@ setup_unionfs ()
 			done
 		fi
 
-		case "${PERSISTENCE_MEDIA}" in
-			removable)
-				whitelistdev="$(removable_dev)"
-				;;
-
-			removable-usb)
-				whitelistdev="$(removable_usb_dev)"
-				;;
+		local whitelistdev
+		whitelistdev=""
+		if [ -n "${PERSISTENCE_MEDIA}" ]
+		then
+			case "${PERSISTENCE_MEDIA}" in
+				removable)
+					whitelistdev="$(removable_dev)"
+					;;
 
-			*)
-				whitelistdev=""
-				;;
-		esac
+				removable-usb)
+					whitelistdev="$(removable_usb_dev)"
+					;;
+			esac
+			if [ -z "${whitelistdev}" ]
+			then
+				whitelistdev="ignore_all_devices"
+			fi
+		fi
 
 		if is_in_comma_sep_list overlay ${PERSISTENCE_METHOD}
 		then
 			overlays="${old_root_overlay_label} ${old_home_overlay_label} ${custom_overlay_label}"
 		fi
 
-		local overlay_devices=""
-		for media in $(find_persistence_media "${overlays}" "${whitelistdev}")
-		do
-			media="$(echo ${media} | tr ":" " ")"
+		local overlay_devices
+		overlay_devices=""
+		if [ "${whitelistdev}" != "ignore_all_devices" ]
+		then
+			for media in $(find_persistence_media "${overlays}" "${whitelistdev}")
+			do
+				media="$(echo ${media} | tr ":" " ")"
 
-			case ${media} in
-				${old_root_overlay_label}=*)
-					device="${media#*=}"
-					fix_backwards_compatibility ${device} / union
-					overlay_devices="${overlay_devices} ${device}"
-					;;
+				case ${media} in
+					${old_root_overlay_label}=*)
+						device="${media#*=}"
+						fix_backwards_compatibility ${device} / union
+						overlay_devices="${overlay_devices} ${device}"
+						;;
 
-				${old_home_overlay_label}=*)
-					device="${media#*=}"
-					fix_backwards_compatibility ${device} /home bind
-					overlay_devices="${overlay_devices} ${device}"
-					;;
+					${old_home_overlay_label}=*)
+						device="${media#*=}"
+						fix_backwards_compatibility ${device} /home bind
+						overlay_devices="${overlay_devices} ${device}"
+						;;
 
-				${custom_overlay_label}=*)
-					device="${media#*=}"
-					overlay_devices="${overlay_devices} ${device}"
-					;;
-			 esac
-		done
+					${custom_overlay_label}=*)
+						device="${media#*=}"
+						overlay_devices="${overlay_devices} ${device}"
+						;;
+				 esac
+			done
+		fi
 	elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENCE}" ]
 	then
 		# check if there are any nfs options
@@ -399,7 +408,8 @@ setup_unionfs ()
 	# Adding custom persistence
 	if [ -n "${PERSISTENCE}" ] && [ -z "${NOPERSISTENCE}" ]
 	then
-		local custom_mounts="/tmp/custom_mounts.list"
+		local custom_mounts
+		custom_mounts="/tmp/custom_mounts.list"
 		rm -rf ${custom_mounts} 2> /dev/null
 
 		# Gather information about custom mounts from devies detected as overlays
@@ -408,7 +418,8 @@ setup_unionfs ()
 		[ -n "${DEBUG}" ] && cp ${custom_mounts} "/lib/live/mount/persistence"
 
 		# Now we do the actual mounting (and symlinking)
-		local used_overlays=""
+		local used_overlays
+		used_overlays=""
 		used_overlays=$(activate_custom_mounts ${custom_mounts})
 		rm ${custom_mounts}