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 driver_start()
  34 {
  35   #
  36   # insert all sound modules
  37   #
  38   if OLDLOGLEV=$(awk '{print $1}' < /proc/sys/kernel/printk 2> /dev/null); then
  39         /sbin/loglevel 1
  40   fi
  41   modprobe -c | awk '$1 == "alias" && $3 != "off" && ($2 ~ /^snd-card-[0-9]$/) {print $2}' | \
  42     while read line; do \
  43       msg_starting "sound driver: $line"
  44       busy
  45       /sbin/modprobe $line
  46       ok
  47     done
  48   modprobe -c | awk '$1 == "alias" && $3 != "off" && ($2 ~ /^sound-service-[0-9]-[0-9]+$/) {print $2}' | \
  49     while read line; do \
  50       msg_starting "sound driver: $line"
  51       busy
  52       /sbin/modprobe $line
  53       ok
  54     done
  55   if [ -n "$OLDLOGLEV" ]; then
  56         /sbin/loglevel "$OLDLOGLEV"
  57   fi
  58   #
  59   # restore driver settings
  60   #
  61   if [ -x /usr/sbin/alsactl ]; then
  62     if [ -f /etc/asound.state ]; then
  63       if [ "$(kernelver)" -lt "002006012" ]; then
  64         for i in 1 2 3 4; do
  65           [ -a /dev/snd/controlC0 ] && break
  66           sleep 1
  67         done
  68       fi
  69       /usr/sbin/alsactl restore
  70     fi
  71   else
  72     show "ERROR: alsactl not found"; fail
  73   fi
  74 }
  75
  76 detect_stop()
  77 {
  78   #
  79   # remove all sound modules
  80   #
  81   /sbin/lsmod | awk '/^(snd|ac97_bus)/ { print $0 }' | while read line; do \
  82      /sbin/rmmod `echo $line | cut -d ' ' -f 1`; \
  83   done
  84 }
  85
  86 driver_stop()
  87 {
  88   #
  89   # store driver settings
  90   #
  91   if [ -x /usr/sbin/alsactl ]; then
  92     /usr/sbin/alsactl store
  93   else
  94     show '!!!alsactl not found!!!'; fail
  95   fi
  96   #
  97   # remove all sound modules
  98   #
  99   detect_stop
 100 }
 101
 102 detect_start()
 103 {
 104   #
 105   # run only detect module
 106   #
 107   /sbin/modprobe snd-detect
 108 }
 109
 110 # Start driver.
 111 start() {
 112         if [ ! -d /proc/asound ]; then
 113                 driver_start
 114                 if [ -d /proc/asound ]; then
 115                         touch /var/lock/subsys/alsasound
 116                 else
 117                         exit 1
 118                 fi
 119         else
 120                 if [ -f /proc/asound/detect ]; then
 121                         show "Shutting down sound detect module"
 122                         detect_stop
 123                         ok
 124                         driver_start
 125                         if [ -d /proc/asound ]; then
 126                                 touch /var/lock/subsys/alsasound
 127                         else
 128                                 exit 1
 129                         fi
 130                 else
 131                         msg_already_running "ALSA driver"
 132                 fi
 133         fi
 134 }
 135
 136 # Stop daemons.
 137 stop() {
 138         if [ -d /proc/asound ]; then
 139                 show "Shutting down sound driver"
 140                 busy
 141                 if [ -f /proc/asound/detect ]; then
 142                         detect_stop
 143                 else
 144                         driver_stop
 145                 fi
 146                 (rmmod isapnp; rmmod soundcore) 2> /dev/null
 147                 if [ -d /var/lock/subsys ]; then
 148                         rm -f /var/lock/subsys/alsasound
 149                 fi
 150                 ok
 151         else
 152                 msg_not_running "ALSA driver"
 153         fi
 154 }
 155
 156
 157 # See how we were called.
 158 case "$1" in
 159   start)
 160         start
 161         ;;
 162   stop)
 163         stop
 164         ;;
 165   restart|force-reload)
 166         stop
 167         start
 168         ;;
 169   status)
 170         # TODO
 171         ;;
 172   *)
 173         msg_usage "$0 {start|stop|restart|force-reload|status}"
 174         exit 3
 175 esac
 176
 177 exit 0