1#!/bin/sh
2
3# Copyright (c) 2018 M. Warner Losh <imp@FreeBSD.org>
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24# SUCH DAMAGE.
25#
26#
27# PROVIDE: devmatch
28# REQUIRE: kld
29# BEFORE: netif
30# KEYWORD: nojail
31
32. /etc/rc.subr
33
34name="devmatch"
35desc="Use devmatch(8) to load kernel modules"
36rcvar="${name}_enable"
37
38start_cmd="${name}_start"
39stop_cmd=':'
40one_nomatch="$2"
41
42devmatch_start()
43{
44	local x m list
45
46	if [ -n "$one_nomatch" ]; then
47		list=$(devmatch -p "${one_nomatch}" | sort -u)
48	else
49		sysctl hw.bus.devctl_nomatch_enabled=1
50		list=$(devmatch | sort -u)
51	fi
52
53	[ -n "$list" ] || return
54
55	# While kldload can accept multiple modules on the line at once, we loop
56	# here in case there's some weird error with one of them.  We also
57	# optimize against the false positives or drivers that have symbolic
58	# links that confuse devmatch by running it -n.  Finally, we filter out
59	# all items in the devmatch_blocklist.
60	#
61	# We strip all the .ko suffixes off so that one may specify modules
62	# with or without .ko. Prior version documented it was without, while
63	# the code required it, so accept both now. devmatch produces module
64	# names with .ko
65
66	devctl freeze
67	x=$(echo "#${devmatch_blocklist:-${devmatch_blacklist}}#$(kenv -q devmatch_blocklist)#" | \
68		sed -e "s/ /#/g;s/\.ko#/#/g")
69	for m in ${list}; do
70		m="${m%.ko}"
71		case "${x}" in
72		*"#${m}#"*) continue ;;
73		esac
74		kldstat -q -n ${m} || \
75		    (echo "Autoloading module: ${m}"; kldload -n ${m})
76	done
77	devctl thaw
78}
79
80load_rc_config $name
81
82# doesn't make sense to run in a svcj: privileged operations
83devmatch_svcj="NO"
84
85run_rc_command "$1"
86