mixer (2535B)
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: releng/12.2/libexec/rc/rc.d/mixer 298514 2016-04-23 16:10:54Z lme $ 28 # 29 30 # PROVIDE: mixer 31 # REQUIRE: FILESYSTEMS 32 # KEYWORD: nojail shutdown 33 34 . /etc/rc.subr 35 36 name="mixer" 37 desc="Save and restore soundcard mixer values" 38 rcvar="mixer_enable" 39 stop_cmd="mixer_stop" 40 start_cmd="mixer_start" 41 reload_cmd="mixer_start" 42 extra_commands="reload" 43 44 # 45 # List current mixer devices to stdout. 46 # 47 list_mixers() 48 { 49 ( cd /dev ; ls mixer* 2>/dev/null ) 50 } 51 52 # 53 # Save state of an individual mixer specified as $1 54 # 55 mixer_save() 56 { 57 local dev 58 59 dev="/dev/${1}" 60 if [ -r ${dev} ]; then 61 /usr/sbin/mixer_prog -f ${dev} -o > /var/db/${1}-state 2>/dev/null 62 fi 63 } 64 65 # 66 # Restore the state of an individual mixer specified as $1 67 # 68 mixer_restore() 69 { 70 local file dev 71 72 dev="/dev/${1}" 73 file="/var/db/${1}-state" 74 if [ -r ${dev} -a -r ${file} ]; then 75 /usr/sbin/mixer_prog -f ${dev} `cat ${file}` > /dev/null 76 fi 77 } 78 79 # 80 # Restore state of all mixers 81 # 82 mixer_start() 83 { 84 local mixer 85 86 for mixer in `list_mixers`; do 87 mixer_restore ${mixer} 88 done 89 } 90 91 # 92 # Save the state of all mixers 93 # 94 mixer_stop() 95 { 96 local mixer 97 98 for mixer in `list_mixers`; do 99 mixer_save ${mixer} 100 done 101 } 102 103 load_rc_config $name 104 run_rc_command "$1"