rootfsinstall: -L option to specify the volume label for system partition

src/rootfsinstall.sh

@@ -8,6 +8,7 @@
 SYSTEMFSTYPE=ext4
 # All targets are arm currently
 TARGET_ARCH=arm
+VOLUME_LABEL="openmamba"
 
 function usage() {
    echo "Usage: $0 device rootfs-archive [-bpi|-cubox|-rpi] [-a archive] [-c command] [-fs fstype] [-k kernel] [-p password] [-y]"
@@ -28,6 +29,7 @@ function usage() {
    echo "-k2 kernel  : extract and use specified second kernel file from ROOTFS/boot/ for boot"
    echo "-i packages : install packages using package manager in chroot"
    echo "-l          : force local installation only; don't perform installation from network"
+   echo "-L          : rootfs volume label (default: 'openmamba')"
    echo "-p password : set given password for root user"
    echo "-r mode     : set given default video mode where applicable (e.g. -r 1920x1080-32@60)"
    echo "-y          : assume yes to all questions (script mode)"
@@ -108,6 +110,13 @@ while [ "$1" ]; do
            shift
            ;;
       -l) LOCALONLY=1 ;;
+      -L) [ "$2" ] || {
+              echo "Error: -L option requires a volume label as argument; aborting."
+              exit 1
+          }
+          VOLUME_LABEL="$2"
+          shift
+          ;;
       -p) [ "$2" ] || {
               echo "Error: -p option requires a password as argument; aborting."
               exit 1
@@ -254,7 +263,7 @@ if [ "$BOOTFSTYPE" ]; then
 fi
 
 echo "Formatting $PARTITION2 ($SYSTEMFSTYPE)..."
-mke2fs -q -F -t $SYSTEMFSTYPE -j -L "openmamba" $PARTITION2 || {
+mke2fs -q -F -t $SYSTEMFSTYPE -j -L "$VOLUME_LABEL" $PARTITION2 || {
    echo "ERROR: unable to format $PARTITION2; aborting."
    exit 1
 }