Using 'local' in a safe way.

[live-boot-grml.git] / scripts / boot / 9990-overlay.sh

diff --git a/scripts/boot/9990-overlay.sh b/scripts/boot/9990-overlay.sh
index 96c3331..80b5726 100755 (executable)
--- a/scripts/boot/9990-overlay.sh
+++ b/scripts/boot/9990-overlay.sh
@@ -189,7 +189,8 @@ setup_unionfs ()
                        done
                fi
 
-               local whitelistdev=""
+               local whitelistdev
+               whitelistdev=""
                if [ -n "${PERSISTENCE_MEDIA}" ]
                then
                        case "${PERSISTENCE_MEDIA}" in
@@ -212,7 +213,8 @@ setup_unionfs ()
                        overlays="${old_root_overlay_label} ${old_home_overlay_label} ${custom_overlay_label}"
                fi
 
-               local overlay_devices=""
+               local overlay_devices
+               overlay_devices=""
                if [ "${whitelistdev}" != "ignore_all_devices" ]
                then
                        for media in $(find_persistence_media "${overlays}" "${whitelistdev}")
@@ -406,7 +408,8 @@ setup_unionfs ()
        # Adding custom persistence
        if [ -n "${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
@@ -415,7 +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}