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 $alsactl ]; then
  72     if [ -f /etc/asound.state ]; then
  73       if [ "$(kernelver)" -lt "002006012" ]; then
  74         for i in 1 2 3 4; do
  75           [ -a /dev/snd/controlC0 ] && break
  76           sleep 1
  77         done
  78       fi
  79       $alsactl restore
  80     fi
  81   else
  82     show "ERROR: alsactl not found"; fail
  83   fi
  84 }
  85
  86 detect_stop()
  87 {
  88   #
  89   # remove all sound modules
  90   #
  91   /sbin/lsmod | awk '/^snd/ { print $0 }' | while read line; do \
  92      /sbin/rmmod `echo $line | cut -d ' ' -f 1`; \
  93   done
  94 }
  95
  96 driver_stop()
  97 {
  98   #
  99   # store driver settings
 100   #
 101   if [ -x $alsactl ]; then
 102     $alsactl store
 103   else
 104     show '!!!alsactl not found!!!'; fail
 105   fi
 106   #
 107   # remove all sound modules
 108   #
 109   detect_stop
 110 }
 111
 112 detect_start()
 113 {
 114   #
 115   # run only detect module
 116   #
 117   /sbin/modprobe snd-detect
 118 }
 119
 120 # Start driver.
 121 start() {
 122         if [ ! -d /proc/asound ]; then
 123                 driver_start
 124                 if [ -d /proc/asound ]; then
 125                         touch /var/lock/subsys/alsasound
 126                 else
 127                         exit 1
 128                 fi
 129         else
 130                 if [ -f /proc/asound/detect ]; then
 131                         show "Shutting down sound detect module"
 132                         detect_stop
 133                         ok
 134                         driver_start
 135                         if [ -d /proc/asound ]; then
 136                                 touch /var/lock/subsys/alsasound
 137                         else
 138                                 exit 1
 139                         fi
 140                 else
 141                         msg_already_running "ALSA driver"
 142                 fi
 143         fi
 144 }
 145
 146 # Stop daemons.
 147 stop() {
 148         if [ -d /proc/asound ]; then
 149                 show "Shutting down sound driver"
 150                 busy
 151                 if [ -f /proc/asound/detect ]; then
 152                         detect_stop
 153                 else
 154                         driver_stop
 155                 fi
 156                 (rmmod isapnp; rmmod soundcore) 2> /dev/null
 157                 if [ -d /var/lock/subsys ]; then
 158                         rm -f /var/lock/subsys/alsasound
 159                 fi
 160                 ok
 161         else
 162                 msg_not_running "ALSA driver"
 163         fi
 164 fi
 165
 166 # See how we were called.
 167 case "$1" in
 168   start)
 169         start
 170         ;;
 171   stop)
 172         stop
 173         ;;
 174   restart|force-reload)
 175         stop
 176         start
 177         ;;
 178   status)
 179         # TODO
 180         ;;
 181   *)
 182         msg_usage "$0 {start|stop|restart|force-reload|status}"
 183         exit 3
 184 esac
 185
 186 exit 0