etc/rc.d/mixer

   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 240336 2012-09-11 05:04:59Z obrien $
  28 #
  29
  30 # PROVIDE: mixer
  31 # REQUIRE: root mountcritlocal cleanvar
  32 # KEYWORD: nojail shutdown
  33
  34 . /etc/rc.subr
  35
  36 name="mixer"
  37 rcvar="mixer_enable"
  38 stop_cmd="mixer_stop"
  39 start_cmd="mixer_start"
  40 reload_cmd="mixer_start"
  41 extra_commands="reload"
  42
  43 #
  44 # List current mixer devices to stdout.
  45 #
  46 list_mixers()
  47 {
  48         ( cd /dev ; ls mixer* 2>/dev/null )
  49 }
  50
  51 #
  52 # Save state of an individual mixer specified as $1
  53 #
  54 mixer_save()
  55 {
  56         local dev
  57
  58         dev="/dev/${1}"
  59         if [ -r ${dev} ]; then
  60                 /usr/sbin/mixer -f ${dev} -s > /var/db/${1}-state 2>/dev/null
  61         fi
  62 }
  63
  64 #
  65 # Restore the state of an individual mixer specified as $1
  66 #
  67 mixer_restore()
  68 {
  69         local file dev
  70
  71         dev="/dev/${1}"
  72         file="/var/db/${1}-state"
  73         if [ -r ${dev} -a -r ${file} ]; then
  74                 /usr/sbin/mixer -f ${dev} `cat ${file}` > /dev/null
  75         fi
  76 }
  77
  78 #
  79 # Restore state of all mixers
  80 #
  81 mixer_start()
  82 {
  83         local mixer
  84
  85         for mixer in `list_mixers`; do
  86                 mixer_restore ${mixer}
  87         done
  88 }
  89
  90 #
  91 # Save the state of all mixers
  92 #
  93 mixer_stop()
  94 {
  95         local mixer
  96
  97         for mixer in `list_mixers`; do
  98                 mixer_save ${mixer}
  99         done
 100 }
 101
 102 load_rc_config $name
 103 run_rc_command "$1"