udev-extraconf: Unmount SD card after ejection

Submitted by Yasir Khan on Aug. 14, 2014, 2:56 p.m.

Details

Message ID 1408028197-21536-1-git-send-email-yasir_khan@mentor.com
State Accepted
Commit 140d188b3665f914396834168feeff6ffcb64d76
Headers show

Commit Message

Yasir Khan Aug. 14, 2014, 2:56 p.m.
From: Yasir-Khan <yasir_khan@mentor.com>

Adds udev rule to unmount SD card partitions in case of improper
ejection from card reader.

When SD card is ejected from card reader without being unmounted
first, kernel does not generate a REMOVE event, instead it
generates a CHANGE event(only if polling is enabled
/sys/module/block/parameters/events_dfl_poll_msecs) and we don't
have any udev rule in automount.rules to handle this event,so
partitions never get unmounted. Unmounting of partitions can be
done if udev rules handle this CHANGE event.

Signed-off-by: Abbas Raza <Abbas_Raza@mentor.com>
Signed-off-by: Yasir-Khan <yasir_khan@mentor.com>
---
 .../udev/udev-extraconf/automount.rules            |    2 +-
 meta/recipes-core/udev/udev-extraconf/mount.sh     |    3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

Patch hide | download patch | download mbox

diff --git a/meta/recipes-core/udev/udev-extraconf/automount.rules b/meta/recipes-core/udev/udev-extraconf/automount.rules
index 7e844c3..62578ea 100644
--- a/meta/recipes-core/udev/udev-extraconf/automount.rules
+++ b/meta/recipes-core/udev/udev-extraconf/automount.rules
@@ -16,4 +16,4 @@ 
 # Media automounting
 SUBSYSTEM=="block", ACTION=="add"    RUN+="/etc/udev/scripts/mount.sh"
 SUBSYSTEM=="block", ACTION=="remove" RUN+="/etc/udev/scripts/mount.sh"
-
+SUBSYSTEM=="block", ACTION=="change", ENV{DISK_MEDIA_CHANGE}=="1" RUN+="/etc/udev/scripts/mount.sh"
diff --git a/meta/recipes-core/udev/udev-extraconf/mount.sh b/meta/recipes-core/udev/udev-extraconf/mount.sh
index 7df1b6e..3eea910 100644
--- a/meta/recipes-core/udev/udev-extraconf/mount.sh
+++ b/meta/recipes-core/udev/udev-extraconf/mount.sh
@@ -78,8 +78,7 @@  if [ "$ACTION" = "add" ] && [ -n "$DEVNAME" ] && [ -n "$ID_FS_TYPE" -o "$media_t
 fi
 
 
-
-if [ "$ACTION" = "remove" ] && [ -x "$UMOUNT" ] && [ -n "$DEVNAME" ]; then
+if [ "$ACTION" = "remove" ] || [ "$ACTION" = "change" ] && [ -x "$UMOUNT" ] && [ -n "$DEVNAME" ]; then
 	for mnt in `cat /proc/mounts | grep "$DEVNAME" | cut -f 2 -d " " `
 	do
 		$UMOUNT $mnt