mixer revision 127043 
1#!/bin/sh -
2#
3# Copyright (c) 2004  The FreeBSD Project
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD: head/etc/rc.d/mixer 127043 2004-03-15 23:09:17Z jhb $
28#
29
30# PROVIDE: mixer
31# REQUIRE: LOGIN usbd
32# KEYWORD: FreeBSD
33
34. /etc/rc.subr
35
36name="mixer"
37stop_cmd="mixer_stop"
38start_cmd="mixer_start"
39reload_cmd="mixer_start"
40extra_commands="reload"
41
42#
43# List current mixer devices to stdout.
44#
45list_mixers()
46{
47
48	( cd /dev ; ls mixer* 2>/dev/null )
49}
50
51#
52# Echo state file name for an individual mixer ($1) to stdout
53#
54mixer_statefile()
55{
56	echo "/var/db/${1}-state"
57}
58
59#
60# Save state of an individual mixer specified as $1
61#
62mixer_save()
63{
64	local file dev
65
66	dev="/dev/${1}"
67	file=`mixer_statefile $1`
68	if [ -r ${dev} ]; then
69		/usr/sbin/mixer -f ${dev} -s > ${file} 2>/dev/null
70	fi
71}
72
73#
74# Restore the state of an individual mixer specified as $1
75#
76mixer_restore()
77{
78	local file dev
79
80	dev="/dev/${1}"
81	file=`mixer_statefile $1`
82	if [ -r ${dev} -a -r ${file} ]; then
83		/usr/sbin/mixer -f ${dev} `cat ${file}` > /dev/null
84	fi
85}
86
87#
88# Restore state of all mixers
89#
90mixer_start()
91{
92	local mixer
93
94	for mixer in `list_mixers`; do
95		mixer_restore ${mixer}
96	done
97}
98
99#
100# Save the state of all mixers
101#
102mixer_stop()
103{
104	local mixer
105
106	for mixer in `list_mixers`; do
107		mixer_save ${mixer}
108	done
109}
110
111load_rc_config $name
112run_rc_command "$1"
113