alsasound.init

   1 #!/bin/sh
   2 #
   3 # alsasound     This shell script takes care of starting and stopping \
   4 #               ALSA sound driver.
   5 #
   6 # This script requires /usr/sbin/alsactl program from alsa-utils package.
   7 #
   8 # Copyright (c) by Jaroslav Kysela <perex@jcu.cz>
   9 #
  10 #  This program is free software; you can redistribute it and/or modify
  11 #  it under the terms of the GNU General Public License as published by
  12 #  the Free Software Foundation; either version 2 of the License, or
  13 #  (at your option) any later version.
  14 #
  15 #  This program is distributed in the hope that it will be useful,
  16 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 #  GNU General Public License for more details.
  19 #
  20 #  You should have received a copy of the GNU General Public License
  21 #  along with this program; if not, write to the Free Software
  22 #  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 #
  24 #
  25 # For PLD Linux Distribution:
  26 # chkconfig:    2345 87 14
  27 # description:  ALSA driver
  28 #
  29
  30 # Source function library.
  31 . /etc/rc.d/init.d/functions
  32
  33 alsactl=/usr/sbin/alsactl
  34
  35 if [ $(kernelverser) = "002006" ]; then
  36         MODULES_CONF=/etc/modprobe.conf
  37 elif [ -r /etc/modules.conf ]; then
  38         MODULES_CONF=/etc/modules.conf
  39 else
  40         MODULES_CONF=/etc/conf.modules
  41 fi
  42
  43 driver_start()
  44 {
  45   #
  46   # insert all sound modules
  47   #
  48   if OLDLOGLEV=$(awk '{print $1}' < /proc/sys/kernel/printk 2> /dev/null); then
  49         /sbin/loglevel 1
  50   fi
  51   awk '$1 == "alias" && $3 != "off" && ($2 ~ /^snd-card-[0-9]$/) {print $2}' < $MODULES_CONF | \
  52     while read line; do \
  53       msg_starting "sound driver: $line"
  54       busy
  55       /sbin/modprobe $line
  56       ok
  57     done
  58   awk '$1 == "alias" && $3 != "off" && ($2 ~ /^sound-service-[0-9]-[0-9]+$/) {print $2}' < $MODULES_CONF | \
  59     while read line; do \
  60       msg_starting "sound driver: $line"
  61       busy
  62       /sbin/modprobe $line
  63       ok
  64     done
  65   if [ -n "$OLDLOGLEV" ]; then
  66         /sbin/loglevel "$OLDLOGLEV"
  67   fi
  68   #
  69   # restore driver settings
  70   #
  71   if [ -x $alsactl ]; then
  72     if [ -f /etc/asound.state ]; then
  73       $alsactl restore
  74     fi
  75   else
  76     show "ERROR: alsactl not found"; fail
  77   fi
  78 }
  79
  80 detect_stop()
  81 {
  82   #
  83   # remove all sound modules
  84   #
  85   /sbin/lsmod | awk '/^snd/ { print $0 }' | while read line; do \
  86      /sbin/rmmod `echo $line | cut -d ' ' -f 1`; \
  87   done
  88 }
  89
  90 driver_stop()
  91 {
  92   #
  93   # store driver settings
  94   #
  95   if [ -x $alsactl ]; then
  96     $alsactl store
  97   else
  98     show '!!!alsactl not found!!!'; fail
  99   fi
 100   #
 101   # remove all sound modules
 102   #
 103   detect_stop
 104 }
 105
 106 detect_start()
 107 {
 108   #
 109   # run only detect module
 110   #
 111   /sbin/modprobe snd-detect
 112 }
 113
 114 # See how we were called.
 115 case "$1" in
 116   start)
 117         # Start driver.
 118         if [ ! -d /proc/asound ]; then
 119                 driver_start
 120                 if [ -d /proc/asound ]; then
 121                         touch /var/lock/subsys/alsasound
 122                 else
 123                         exit 1
 124                 fi
 125         else
 126                 if [ -f /proc/asound/detect ]; then
 127                         show "Shutting down sound detect module:"
 128                         detect_stop
 129                         ok
 130                         driver_start
 131                         if [ -d /proc/asound ]; then
 132                                 touch /var/lock/subsys/alsasound
 133                         else
 134                                 exit 1
 135                         fi
 136                 else
 137                         msg_already_running "ALSA driver"
 138                 fi
 139         fi
 140         ;;
 141   stop)
 142         # Stop daemons.
 143         if [ -d /proc/asound ]; then
 144                 show "Shutting down sound driver:"
 145                 busy
 146                 if [ -f /proc/asound/detect ]; then
 147                         detect_stop
 148                 else
 149                         driver_stop
 150                 fi
 151                 (rmmod isapnp; rmmod soundcore) 2> /dev/null
 152                 if [ -d /var/lock/subsys ]; then
 153                         rm -f /var/lock/subsys/alsasound
 154                 fi
 155                 ok
 156         else
 157                 msg_not_running "ALSA driver"
 158         fi
 159         ;;
 160   restart|force-reload)
 161         $0 stop
 162         $0 start
 163         exit $?
 164         ;;
 165   status)
 166         # TODO
 167         ;;
 168   *)
 169         msg_usage "$0 {start|stop|restart|force-reload|status}"
 170         exit 3
 171 esac
 172
 173 exit 0