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fstools: media change detection (eg:sdcard) using kernel polling
Linux kernel has a polling mechanism that can be activated by changing the parameter /sys/module/block/parameters/events_dfl_poll_msecs which is deactivated by default or the /sys/block/[device]/events_poll_msecs for one device. This patch set the events_poll_msecs when a disk is inserted. Once the media disk change event is sent by the kernel then we force a re-read of the devices using /sbin/block info. With this patch, insertion and ejection of sd card will automatically generate partition devices in /dev. Signed-off-by: Matthias Badaire <firstname.lastname@example.org> [rewrap commit message, fix bashisms, fix non-matching condition, bump pkg release] Signed-off-by: Jo-Philipp Wich <email@example.com>
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|@@ -0,0 +1,8 @@|
|[ -n "$DISK_MEDIA_CHANGE" ] && /sbin/block info|
|if [ "$ACTION" = "add" -a "$DEVTYPE" = "disk" ]; then|
|case "$DEVNAME" in|
|mtd*) : ;;|
|*) echo 2000 > /sys/block/$DEVNAME/events_poll_msecs ;;|