busybox: support mount via label for btrfs and squashfs

Also move the mount via label (and mount via UUID) support into its
own config fragment and disable volume ID support for less common
filesystem formats exFAT and NILFS.

Following this commit, mount via label is supported for btrfs, ext, f2fs,
fat and squashfs.

(From OE-Core rev: b5e91f26b2779178765b62df36421d97caa4cdd7)

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/busybox/busybox/defconfig

@@ -603,7 +603,7 @@ CONFIG_MOUNT=y
 # CONFIG_FEATURE_MOUNT_FAKE is not set
 # CONFIG_FEATURE_MOUNT_VERBOSE is not set
 # CONFIG_FEATURE_MOUNT_HELPERS is not set
-CONFIG_FEATURE_MOUNT_LABEL=y
+# CONFIG_FEATURE_MOUNT_LABEL is not set
 CONFIG_FEATURE_MOUNT_NFS=y
 # CONFIG_FEATURE_MOUNT_CIFS is not set
 CONFIG_FEATURE_MOUNT_FLAGS=y
@@ -629,24 +629,20 @@ CONFIG_FEATURE_UMOUNT_ALL=y
 CONFIG_FEATURE_MOUNT_LOOP=y
 CONFIG_FEATURE_MOUNT_LOOP_CREATE=y
 # CONFIG_FEATURE_MTAB_SUPPORT is not set
-CONFIG_VOLUMEID=y
-
-#
-# Filesystem/Volume identification
-#
+# CONFIG_VOLUMEID is not set
 # CONFIG_FEATURE_VOLUMEID_BTRFS is not set
 # CONFIG_FEATURE_VOLUMEID_CRAMFS is not set
-CONFIG_FEATURE_VOLUMEID_EXFAT=y
-CONFIG_FEATURE_VOLUMEID_EXT=y
-CONFIG_FEATURE_VOLUMEID_F2FS=y
-CONFIG_FEATURE_VOLUMEID_FAT=y
+# CONFIG_FEATURE_VOLUMEID_EXFAT is not set
+# CONFIG_FEATURE_VOLUMEID_EXT is not set
+# CONFIG_FEATURE_VOLUMEID_F2FS is not set
+# CONFIG_FEATURE_VOLUMEID_FAT is not set
 # CONFIG_FEATURE_VOLUMEID_HFS is not set
 # CONFIG_FEATURE_VOLUMEID_ISO9660 is not set
 # CONFIG_FEATURE_VOLUMEID_JFS is not set
 # CONFIG_FEATURE_VOLUMEID_LINUXRAID is not set
 # CONFIG_FEATURE_VOLUMEID_LINUXSWAP is not set
 # CONFIG_FEATURE_VOLUMEID_LUKS is not set
-CONFIG_FEATURE_VOLUMEID_NILFS=y
+# CONFIG_FEATURE_VOLUMEID_NILFS is not set
 # CONFIG_FEATURE_VOLUMEID_NTFS is not set
 # CONFIG_FEATURE_VOLUMEID_OCFS2 is not set
 # CONFIG_FEATURE_VOLUMEID_REISERFS is not set

meta/recipes-core/busybox/busybox/mount-via-label.cfg

@@ -0,0 +1,9 @@
+CONFIG_BLKID=y
+CONFIG_FEATURE_BLKID_TYPE=y
+CONFIG_FEATURE_MOUNT_LABEL=y
+CONFIG_VOLUMEID=y
+CONFIG_FEATURE_VOLUMEID_BTRFS=y
+CONFIG_FEATURE_VOLUMEID_EXT=y
+CONFIG_FEATURE_VOLUMEID_F2FS=y
+CONFIG_FEATURE_VOLUMEID_FAT=y
+CONFIG_FEATURE_VOLUMEID_SQUASHFS=y

meta/recipes-core/busybox/busybox_1.23.2.bb

@@ -32,6 +32,7 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
            file://busybox-cross-menuconfig.patch \
            file://0001-ifconfig-fix-double-free-fatal-error-in-INET_sprint.patch \
            file://0001-chown-fix-help-text.patch \
+           file://mount-via-label.cfg \
 "
 
 SRC_URI[tarball.md5sum] = "7925683d7dd105aabe9b6b618d48cc73"

meta/recipes-core/busybox/busybox_git.bb

@@ -38,6 +38,7 @@ SRC_URI = "git://busybox.net/busybox.git \
            file://busybox-cross-menuconfig.patch \
            file://0001-ifconfig-fix-double-free-fatal-error-in-INET_sprint.patch \
            file://0001-chown-fix-help-text.patch \
+           file://mount-via-label.cfg \
 "
 
 EXTRA_OEMAKE += "V=1 ARCH=${TARGET_ARCH} CROSS_COMPILE=${TARGET_PREFIX} SKIP_STRIP=y"