#!/bin/bash
#
# /etc/init.d/alsa This shell script takes care of starting and stopping
# ALSA sound driver.
#
# This script requires /usr/sbin/alsactl and /usr/bin/aconnect programs
# from the alsa-utils package.
#
# Copyright (c) by Jaroslav Kysela <perex@jcu.cz>
#
# Slightly modified for Debian GNU/Linux by Wichert Akkerman.
# Masato Taruishi.
#
# Slightly modified for Linux-Mandrake by Chmouel Boudjnah
# <chmouel@mandrakesoft.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
#daemon
#
# chkconfig: 2345 17 70
# description: This shell script launch the alsa sound system on your
# system.
. /etc/init.d/functions
PKLVL=$(cut -f1 /proc/sys/kernel/printk)
sysctl -n -w kernel.printk=0
alsactl=/usr/sbin/alsactl
aconnect=/usr/bin/aconnect
[[ ! -f /usr/share/alsa/alsa-utils ]] && exit 0
[[ -e /etc/sysconfig/alsa ]] && . /etc/sysconfig/alsa
. /usr/share/alsa/alsa-utils
function start() {
found_driver="false"
gprintf "Starting ALSA version %s:" "$alsa_version"
# First load the ALSA common driver and check whether devfs properly
# can be available when the working kernel has devfs support.
/sbin/modprobe snd
if [ ! -e /dev/snd ]; then
if [ -d /proc/asound/dev ]; then
# you are using the kernel without devfs so simply create
# symlink
ln -s /proc/asound/dev /dev/snd
else
# you are using the kernel with devfs but disabling devfs.
/sbin/modprobe -r snd
exit 0
fi
fi
awk '/^((alias)|(probe)) +(sound|snd)-(slot|card)-[0-9]/ {print $3}' /etc/modules.conf | ( \
while read line; do
[[ $line != snd-* ]] && continue
found_driver="found"
desc=`echo $line | cut -d- -f 2`
if /sbin/modprobe $line >/dev/null 2>&1; then
echo -n " $desc"
found_driver="detect"
else
echo -n " ($desc)"
fi
done
case $found_driver in
detect)
echo -n "."
success;echo
;;
false)
if [ $alsa_version = "none" ]; then
gprintf " no driver installed.";
failure;echo
exit 1
else
gprintf " no sound cards defined.";
failure;echo
exit 1
fi
;;
found)
success;echo
exit 1
;;
esac
) || exit 0
#
# Enabling sound devices for alsactl.
get_sound_devs
enable_sound_devs
# restore driver settings
#
if [ -x $alsactl ]; then
gprintf "Doing alsactl to restore mixer settings..."
$alsactl restore >/dev/null 2>&1 || true
success;echo
fi
}
function startoss() {
[ "$startosslayer" = true ] &&
for i in mixer pcm seq ; do /sbin/modprobe snd-${i}-oss >/dev/null 2>&1 ; done
}
function detect_stop() {
#
# remove all sound modules
#
clean=0
modprobe -r snd-seq-oss
modprobe -r snd-pcm-oss
modprobe -r snd-mixer-oss
/sbin/lsmod | grep -E "^snd" | ( while read line; do \
/sbin/rmmod `echo $line | cut -d ' ' -f 1` >/dev/null 2>&1 || clean=1; \
done
# remove the 2.2 soundcore module (if possible)
/sbin/rmmod soundcore >/dev/null 2>&1 || true
/sbin/rmmod gameport 2> /dev/null || true
if [ $clean = 1 ]; then
exit 1
fi
)
if [ $? = 1 ]; then
return 1
fi
}
function stop() {
#
# store driver settings
#
if [ -x $alsactl ]; then
gprintf "Doing alsactl to store mixer settings..."
$alsactl store >/dev/null 2>&1 || true
sleep 1
success;echo
fi
gprintf "Shutting down ALSA sound driver (version %s): " "$alsa_version"
# Make sure that no devices are opened while
# we are killing the procs that have devices open
get_sound_devs
get_sound_devs_proc
disable_sound_devs
#chmod 000 $sound_devs_proc As of drivers 0.5.8a these permissions can't be changed
if [ "$ALSA_KILL_MODE" = "force" ]; then
kill_procs_using_sound_devs
#
# remove all sequencer connections if any
#
if [ -f /proc/asound/seq/clients -a -x $aconnect ]; then
$aconnect --removeall
fi
else
get_procs_using_sound_devs
if [ -n "$procs_using_sound_devs" ]; then
gprintf "no. (sound is being used by pid %s)" "$procs_using_sound_devs)"
chmod 660 $sound_devs_dev
failure;echo
exit 0
fi
fi
#
# remove all sound modules
#
detect_stop
enable_sound_devs
#chmod 600 $sound_devs_proc As of drivers 0.5.8a these permissions can't be changed
if [ ! -f /dev/.devfsd ] && [ -L /dev/snd ]; then
rm -f /dev/snd
fi
}
function detect_start() {
#
# run only detect module
#
/sbin/modprobe snd-detect >/dev/null 2>&1 || true
}
# Initialize some variables.
get_alsa_version
# See how we were called.
case "$1" in
start)
# Start driver.
if [ ! -d /proc/asound ]; then
if egrep -qs "^alias( |\t)+(snd|sound)-(card|slot)-[0-9]( |\t)+snd-" /etc/modules.conf;then
start && startoss
touch /var/lock/subsys/alsa
fi
else
if [ -f /proc/asound/detect ]; then
gprintf "Shutting down ALSA sound detect module (version %s): " "$alsa_version"
detect_stop
success;echo
start && startoss
touch /var/lock/subsys/alsa
else
gprintf "ALSA driver (version %s) is already running." "$alsa_version"
echo
fi
fi
;;
stop)
# Stop daemons.
if [ -d /proc/asound ]; then
if [ -f /proc/asound/detect ]; then
detect_stop
rm -f /var/lock/subsys/alsa
else
if stop; then
success;echo
rm -f /var/lock/subsys/alsa
else
failure;echo
rm -f /var/lock/subsys/alsa
fi
fi
else
gprintf "ALSA driver isn't running."
echo
fi
;;
status)
if egrep -q '(sparcaudio|sound)' /proc/devices;then
gprintf "Sound loaded"
echo
fi
;;
force-stop)
ALSA_KILL_MODE="force" $0 stop
;;
condrestart)
if [ -f /var/lock/subsys/alsa ];then
$0 stop && $0 $start
fi
;;
restart)
$0 stop && $0 start
;;
force-reload)
ALSA_KILL_MODE="force" $0 restart
;;
force-restart)
ALSA_KILL_MODE="force" $0 stop
$0 start
;;
*)
echo "Usage: %s\n" "$(basename $0) {start|stop|restart|force-reload|force-stop|force-restart}"
exit 1
esac
sysctl -n -w kernel.printk=$PKLVL
exit 0
