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When mount command is executed in rootfs module of initrd, eudev creates a loop0 device node, applies rules and adds a inotify watch to it. Right after this step, we execute finish which first tries to kill any running udevd daemon before doing a switch_root. In some cases, it is possible that switch_root is executed before inotify_add_watch was actually processed which would lead to errors like: | inotify_add_watch(6, /dev/loop0, 10) failed: No such file or directory Make sure that we process all the events in queue before actually trying to kill udevd to prevent this race. Fixes [YOCTO #12861] (From OE-Core rev: a85c34d263fcf1542bbedcaf1634302466bb20cf) Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
827 B
827 B
#!/bin/sh
Copyright (C) 2011, 2012 O.S. Systems Software LTDA.
Licensed on MIT
udev_shutdown_hook_handler() {
status=$1
module=$2
if [ "$status" = "pre" ] && [ "$module" = "finish" ]; then
udevadm settle
killall basename $_UDEV_DAEMON 2>/dev/null
fi
}
udev_daemon() { OPTIONS="/sbin/udev/udevd /sbin/udevd /lib/udev/udevd /lib/systemd/systemd-udevd"
for o in $OPTIONS; do
if [ -x "$o" ]; then
echo $o
return 0
fi
done
return 1
}
_UDEV_DAEMON=udev_daemon
udev_enabled() { if [ -z "$_UDEV_DAEMON" ]; then msg "WARNING: Cannot find the udev daemon; daemon will not be started in initramfs." return 1 fi
return 0
}
udev_run() { add_module_pre_hook "udev_shutdown_hook_handler"
mkdir -p /run
mkdir -p /var/run
$_UDEV_DAEMON --daemon
udevadm trigger --action=add
udevadm settle
}