generic-poky/meta/recipes-core/initrdscripts/initramfs-framework/udev

#!/bin/sh
# Copyright (C) 2011, 2012 O.S. Systems Software LTDA.
# Licensed on MIT

udev_daemon() {
	OPTIONS="/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() {
	mkdir -p /run

	$_UDEV_DAEMON --daemon
	udevadm trigger --action=add
	udevadm settle

	killall `basename $_UDEV_DAEMON` 2>/dev/null
}