[OE-core] [kirkstone] [PATCH 3/9] udev-extraconf/mount.sh: add LABELs to mountpoints

[liu.ming50@gmail.com]

From: Muhammad Hamza <Muhammad_Hamza@mentor.com>

This alters the mountpoints such that if a device has a LABEL or
a PARTLABEL, it will be mounted at e.g.:

  /run/media/$LABEL-<device-node>
  /run/media/$PARTLABEL-<device-node>
  /run/media/rootfs-sda2

otherwise the device will be mounted at e.g.:

  /run/media/<device-node>
  /run/media/sda1

The <device-node> appended with LABEL or PARTLABEL makes sure that
the mountpoint is unique, therefore, avoids overlapping mounts.

Signed-off-by: Arsalan H. Awan <Arsalan_Awan@mentor.com>
Signed-off-by: Muhammad Hamza <muhammad_hamza@mentor.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
(cherry picked from commit a9a0a0967832445f1bcc65d58f95343d1b562e1b)
Signed-off-by: Ming Liu <liu.ming50@gmail.com>
---
 meta/recipes-core/udev/udev-extraconf/mount.sh | 18 ++++++++++++++++++
 meta/recipes-core/udev/udev-extraconf_1.1.bb   |  2 +-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-core/udev/udev-extraconf/mount.sh b/meta/recipes-core/udev/udev-extraconf/mount.sh
index c8b773bc07..40910be8bd 100644
--- a/meta/recipes-core/udev/udev-extraconf/mount.sh
+++ b/meta/recipes-core/udev/udev-extraconf/mount.sh
@@ -54,6 +54,9 @@ automount_systemd() {
         grep "^[[:space:]]*$tmp" /etc/fstab && return
     done
 
+    # Get the unique name for mount point
+    get_label_name "${DEVNAME}"
+
     [ -d "$MOUNT_BASE/$name" ] || mkdir -p "$MOUNT_BASE/$name"
 
     MOUNT="$MOUNT -o silent"
@@ -94,6 +97,9 @@ automount() {
 	# configured in fstab
 	grep -q "^$DEVNAME " /proc/mounts && return
 
+	# Get the unique name for mount point
+	get_label_name "${DEVNAME}"
+
 	! test -d "$MOUNT_BASE/$name" && mkdir -p "$MOUNT_BASE/$name"
 	# Silent util-linux's version of mounting auto
 	if [ "x`readlink $MOUNT`" = "x/bin/mount.util-linux" ] ;
@@ -134,6 +140,18 @@ rm_dir() {
 	fi
 }
 
+get_label_name() {
+	# Get the LABEL or PARTLABEL
+	LABEL=`/sbin/blkid | grep "$1:" | grep -o 'LABEL=".*"' | cut -d '"' -f2`
+	# If the $DEVNAME has a LABEL or a PARTLABEL
+	if [ -n "$LABEL" ]; then
+	        # Set the mount location dir name to LABEL appended
+        	# with $name e.g. label-sda. That would avoid overlapping
+	        # mounts in case two devices have same LABEL
+        	name="${LABEL}-${name}"
+	fi
+}
+
 # No ID_FS_TYPE for cdrom device, yet it should be mounted
 name="`basename "$DEVNAME"`"
 [ -e /sys/block/$name/device/media ] && media_type=`cat /sys/block/$name/device/media`
diff --git a/meta/recipes-core/udev/udev-extraconf_1.1.bb b/meta/recipes-core/udev/udev-extraconf_1.1.bb
index 2b908ac05b..8213c1a930 100644
--- a/meta/recipes-core/udev/udev-extraconf_1.1.bb
+++ b/meta/recipes-core/udev/udev-extraconf_1.1.bb
@@ -38,7 +38,7 @@ do_install() {
 }
 
 FILES:${PN} = "${sysconfdir}/udev"
-RDEPENDS:${PN} = "udev"
+RDEPENDS:${PN} = "udev util-linux-blkid"
 CONFFILES:${PN} = "${sysconfdir}/udev/mount.ignorelist"
 
 # to replace udev-extra-rules from meta-oe
-- 
2.25.1