initrdscripts: unionfs cleanup

The unionfs has been disabled for more than a year and it's not going
to be used any more.

This patch cleans up the unionfs related code.

[YOCTO #4761]
[YOCTO #1487]

(From OE-Core rev: ba5e437bc7335468a70ea293496f78e1a9d66287)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/initrdscripts/files/init-live.sh

@@ -7,7 +7,6 @@ ROOT_IMAGE="rootfs.img"
 MOUNT="/bin/mount"
 UMOUNT="/bin/umount"
 ISOLINUX=""
-UNIONFS="no"
 
 # Copied from initramfs-framework. The core of this script probably should be
 # turned into initramfs-framework modules to reduce duplication.
@@ -142,25 +141,10 @@ case $label in
     boot)
 	mkdir $ROOT_MOUNT
 	mknod /dev/loop0 b 7 0 2>/dev/null
-
-	
-	if [ "$UNIONFS" = "yes" ]; then
-	    mkdir /rootfs-tmp
-
-	    if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ISOLINUX/$ROOT_IMAGE /rootfs-tmp ; then
-		fatal "Could not mount rootfs image"
-	    else
-		mkdir /cow
-		mount -t tmpfs -o rw,noatime,mode=755 tmpfs /cow
-		mount -t unionfs -o dirs=/cow:/rootfs-tmp=ro unionfs $ROOT_MOUNT
-		boot_live_root
-	    fi
+	if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ISOLINUX/$ROOT_IMAGE $ROOT_MOUNT ; then
+	    fatal "Could not mount rootfs image"
 	else
-	    if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ISOLINUX/$ROOT_IMAGE $ROOT_MOUNT ; then
-		fatal "Could not mount rootfs image"
-	    else
-		boot_live_root
-	    fi
+	    boot_live_root
 	fi
 	;;
     install|install-efi)

meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb

@@ -7,13 +7,6 @@ SRC_URI = "file://init-live.sh"
 
 PR = "r11"
 
-do_compile() {
-	#if grep -q "CONFIG_UNION_FS=y" ${STAGING_KERNEL_DIR}/.config; then
-	#	sed -i 's/UNIONFS="no"/UNIONFS="yes"/g' ${WORKDIR}/init-live.sh
-	#fi
-	:
-}
- 
 do_install() {
         install -m 0755 ${WORKDIR}/init-live.sh ${D}/init
 }