mirror of
https://git.yoctoproject.org/poky
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0cd5af0272
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. (From OE-Core rev: 140d188b3665f914396834168feeff6ffcb64d76) Signed-off-by: Abbas Raza <Abbas_Raza@mentor.com> Signed-off-by: Yasir-Khan <yasir_khan@mentor.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
91 lines
2.4 KiB
Bash
91 lines
2.4 KiB
Bash
#!/bin/sh
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#
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# Called from udev
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#
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# Attempt to mount any added block devices and umount any removed devices
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MOUNT="/bin/mount"
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PMOUNT="/usr/bin/pmount"
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UMOUNT="/bin/umount"
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for line in `grep -v ^# /etc/udev/mount.blacklist`
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do
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if [ ` expr match "$DEVNAME" "$line" ` -gt 0 ];
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then
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logger "udev/mount.sh" "[$DEVNAME] is blacklisted, ignoring"
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exit 0
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fi
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done
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automount() {
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name="`basename "$DEVNAME"`"
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! test -d "/run/media/$name" && mkdir -p "/run/media/$name"
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# Silent util-linux's version of mounting auto
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if [ "x`readlink $MOUNT`" = "x/bin/mount.util-linux" ] ;
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then
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MOUNT="$MOUNT -o silent"
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fi
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# If filesystem type is vfat, change the ownership group to 'disk', and
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# grant it with w/r/x permissions.
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case $ID_FS_TYPE in
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vfat|fat)
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MOUNT="$MOUNT -o umask=007,gid=`awk -F':' '/^disk/{print $3}' /etc/group`"
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;;
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# TODO
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*)
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;;
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esac
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if ! $MOUNT -t auto $DEVNAME "/run/media/$name"
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then
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#logger "mount.sh/automount" "$MOUNT -t auto $DEVNAME \"/run/media/$name\" failed!"
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rm_dir "/run/media/$name"
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else
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logger "mount.sh/automount" "Auto-mount of [/run/media/$name] successful"
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touch "/tmp/.automount-$name"
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fi
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}
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rm_dir() {
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# We do not want to rm -r populated directories
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if test "`find "$1" | wc -l | tr -d " "`" -lt 2 -a -d "$1"
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then
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! test -z "$1" && rm -r "$1"
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else
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logger "mount.sh/automount" "Not removing non-empty directory [$1]"
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fi
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}
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# No ID_FS_TYPE for cdrom device, yet it should be mounted
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name="`basename "$DEVNAME"`"
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[ -e /sys/block/$name/device/media ] && media_type=`cat /sys/block/$name/device/media`
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if [ "$ACTION" = "add" ] && [ -n "$DEVNAME" ] && [ -n "$ID_FS_TYPE" -o "$media_type" = "cdrom" ]; then
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if [ -x "$PMOUNT" ]; then
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$PMOUNT $DEVNAME 2> /dev/null
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elif [ -x $MOUNT ]; then
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$MOUNT $DEVNAME 2> /dev/null
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fi
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# If the device isn't mounted at this point, it isn't
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# configured in fstab (note the root filesystem can show up as
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# /dev/root in /proc/mounts, so check the device number too)
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if expr $MAJOR "*" 256 + $MINOR != `stat -c %d /`; then
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grep -q "^$DEVNAME " /proc/mounts || automount
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fi
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fi
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if [ "$ACTION" = "remove" ] || [ "$ACTION" = "change" ] && [ -x "$UMOUNT" ] && [ -n "$DEVNAME" ]; then
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for mnt in `cat /proc/mounts | grep "$DEVNAME" | cut -f 2 -d " " `
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do
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$UMOUNT $mnt
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done
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# Remove empty directories from auto-mounter
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name="`basename "$DEVNAME"`"
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test -e "/tmp/.automount-$name" && rm_dir "/run/media/$name"
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fi
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