#!/bin/sh

# Copyright (c) 2018 M. Warner Losh
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
# PROVIDE: devmatch
# REQUIRE: kldxref
# KEYWORD: nojail

. /etc/rc.subr

name="devmatch"
desc="Use devmatch(8) to load kernel modules"
rcvar="${name}_enable"

start_cmd="${name}_start"
stop_cmd=':'
one_nomatch="$2"

devmatch_start()
{
	local x m list

	if [ -n "$one_nomatch" ]; then
		list=$(devmatch -p "${one_nomatch}" | sort -u)
	else
		list=$(devmatch | sort -u)
	fi

	[ -n "$list" ] || return

	# While kldload can accept multiple modules
	# on the line at once, we loop here in case
	# there's some weird error with one of them.
	# We also optimize against the false positives
	# or drivers that have symbolic links that
	# confuse devmatch by running it -n.
	# Finally, we filter out all items in the
	# devmactch_blacklist.
	devctl freeze
	x=$(echo ${devmatch_blacklist} | tr ' ' '#')
	for m in ${list}; do
		case "#${x}#" in
		*"#${m}#"*) continue ;;
		esac
		echo "Autoloading module: ${m}"
		kldload -n ${m}
	done
	devctl thaw
}

load_rc_config $name
run_rc_command "$1"