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#!/sbin/runscript
# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

command_args="${udev_opts}"
start_stop_daemon_args="--background"
description="udev manages device permissions and symbolic links in /dev"
extra_started_commands="reload"
description_reload="Reload the udev rules and databases"

depend()
{
	need sysfs dev-mount
	before checkfs fsck

	# udev does not work inside vservers
	keyword -vserver -lxc
}

start_pre()
{
	# make sure devtmpfs is in the kernel
	if ! grep -qs devtmpfs /proc/filesystems; then
		eerror "CONFIG_DEVTMPFS=y is required in your kernel configuration"
		eerror "for this version of udev to run successfully."
		eerror "This requires immediate attention."
		if ! mountinfo -q /dev; then
			mount -n -t tmpfs dev /dev
			busybox mdev -s
			mkdir /dev/pts
		fi
		return 1
	fi

	# make sure /dev is a mounted devtmpfs
	if ! mountinfo -q -f devtmpfs /dev; then
		eerror "Udev requires /dev to be a mounted devtmpfs."
		eerror "Please reconfigure your system."
		return 1
	fi

	# load unix domain sockets if built as module, Bug #221253
	# and not yet loaded, Bug #363549
	if [ ! -e /proc/net/unix ]; then
		if ! modprobe unix; then
			eerror "Cannot load the unix domain socket module"
			return 1
		fi
	fi

	bins="/sbin/udevd /lib/systemd/systemd-udevd /usr/lib/systemd/systemd-udevd"
	for f in ${bins}; do
		if [ -x "$f" -a ! -L "$f" ]; then
			command="$f"
		fi
	done
	if [ -z "$command" ]; then
		eerror "Unable to find udev executable."
		return 1
	fi

	if [ -e /proc/sys/kernel/hotplug ]; then
		echo "" >/proc/sys/kernel/hotplug
	fi

	if yesno "${udev_debug:-NO}"; then
		command_args="${command_args} --debug 2> /run/udevdebug.log"
	fi

	return 0
}

stop()
{
	local rc=0
	ebegin "Stopping ${name:-$RC_SVCNAME}"
	udevadm control --exit
	rc=$?
	if [ $rc -ne 0 ]; then
		eend $rc "Failed to stop $RC_SVCNAME using udevadm"
		ebegin "Trying with start-stop-daemon"
		start-stop-daemon --stop --exec /sbin/udevd
		rc=$?
	fi
	eend $rc "Failed to stop $RC_SVCNAME"
}

reload()
{
	ebegin "reloading udev rules and databases"
	udevadm control --reload
	eend $?
}