> > Thanks! I started working on differentiating in the alsasound alsa
> > startup script between a full start (all modules are loaded when
> > alsasound executes) and a partial start (some of the modules are already
> > loaded when alsasound executes and it has to load the rest).
> >
> > The first naive question is: do we actually need to differenciate?
> > Apparently modprobe is happy to be given the name of a module that is
> > already loaded, as far as I can tell it does not try to load it again
> > (man modprobe does not say anything about this case that I can see).
>
> alsasound script calls alsactl and card-specific scripts (if any).
> this should be avoided in the case of partial load.
Yes, I took care of executing them just for the cards that had been
loaded.
> IIRC, modprobe returns 0 even if called with the existing module.
> (if the load failed, it returns 255, btw).
> thus, we cannot check this only from the return value of modprobe.
> instead we need to grep /proc/asound/modules for that module.
That's what I'm doing, more or less. I'm including a copy of the
modified alsasound script I'm testing. Seems to be working fine so far.
I think the sequencer driver part is wrong. I don't know what is
expected there (ie: multiple drivers?). I suspect I have to turn that
part of the code into a loop iterating over all sequencer drivers.
-- Fernando
#!/bin/bash
#
# alsasound This shell script takes care of starting and stopping
# the ALSA sound driver.
#
# This script requires /usr/sbin/alsactl and /usr/bin/aconnect programs
# from the alsa-utils package.
#
# Copyright (c) by Jaroslav Kysela <[EMAIL PROTECTED]>
#
#
# 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
#
#
# For RedHat 5.0+:
# chkconfig: 2345 87 14
# description: ALSA driver
#
# modified to visually fit into SuSE 6.0+ by Philipp Thomas <[EMAIL PROTECTED]>
# further improvements by Bernd Kaindl, Olaf Hering and Takashi Iwai.
#
### BEGIN INIT INFO
# Provides: alsasound
# Required-Start: $remote_fs
# Required-Stop: $remote_fs
# Default-Start: 2 3 5
# Default-Stop:
# Description: Loading ALSA drivers and store/restore the current setting
### END INIT INFO
if [ -e /etc/rc.d/init.d/functions ] ; then
# redhat function library
redhat=1
. /etc/rc.d/init.d/functions
fi
if [ -r /etc/rc.config ]; then
. /etc/rc.config
rc_warning="\033[33m\033[1m"
else
rc_done="done"
rc_warning=""
rc_reset=""
fi
if [ x$START_ALSA != xno ]; then
START_ALSA=yes
fi
if [ x$START_ALSA_SEQ != xno ]; then
START_ALSA_SEQ=yes
fi
# Determine the base and follow a runlevel link name.
base=${0##*/}
link=${base#*[SK][0-9][0-9]}
# Force execution if not called by a runlevel directory.
test $link = $base && START_ALSA=yes
test "$START_ALSA" = yes || exit 0
alsactl=/usr/sbin/alsactl
asoundcfg=/etc/asound.state
aconnect=/usr/bin/aconnect
alsascrdir=/etc/alsa.d
function start() {
#
# insert all sound modules that are not already loaded
#
drivers=`/sbin/modprobe -c | \
grep -E "^[[:space:]]*alias[[:space:]]+snd-card-[[:digit:]]" | \
awk '{print $3}'`
loaded=""
for i in $drivers; do
if [ "$i" != off ]; then
is_loaded=`grep -c ^$i /proc/modules`
if [ "$is_loaded" == "0" ]; then
loaded="$loaded $i"
if [ $redhat ] ; then
action "Starting sound driver $i" /sbin/modprobe $i
else
echo -n "Starting sound driver: $i "
/sbin/modprobe $i
echo -e "$rc_done"
fi
else
if [ $redhat ] ; then
echo "Sound driver $i is already loaded"
fi
fi
fi
done
#
# insert sequencer modules that are not already loaded
#
if [ x"$START_ALSA_SEQ" = xyes -a -r /proc/asound/seq/drivers ]; then
t=`cut -d , -f 1 /proc/asound/seq/drivers`
if [ "x$t" != "x" ]; then
loaded=`grep -c ^$t /proc/modules`
if [ "$loaded" == "0" ]; then
if [ $redhat ] ; then
action "Starting sequencer driver $t" /sbin/modprobe $t
else
/sbin/modprobe $t
fi
else
if [ $redhat ] ; then
echo "Sequencer driver $t is already loaded"
fi
fi
fi
fi
#
# restore driver settings
#
if [ -d /proc/asound ]; then
if [ ! -r $asoundcfg ]; then
echo "No mixer config in $asoundcfg, you have to unmute your card!"
else
if [ -x $alsactl ]; then
if [ $redhat ] ; then
action "Restoring sound driver settings" $alsactl -f $asoundcfg restore
else
$alsactl -f $asoundcfg restore
fi
else
if [ $redhat ] ; then
echo -n "Sound driver: could not find alsactl"
failure "Finding alsactl" && echo
else
echo -e "${rc_warning}ERROR: alsactl not found${rc_reset}"
fi
fi
fi
fi
#
# run card-dependent scripts only for drivers we loaded
#
for i in $loaded; do
t=${i##snd-}
if [ -x $alsascrdir/$t ]; then
if [ $redhat ] ; then
action "Running $t script" $alsascrdir/$t
else
$alsascrdir/$t
fi
fi
done
#
# touch lockfile if lockdir exists
#
if [ -d /var/lock/subsys ] ; then
touch /var/lock/subsys/alsasound
fi
}
function terminate() {
#
# Kill processes holding open sound devices
#
# DEVS=`find /dev/ -follow -type c -maxdepth 1 -print 2>/dev/null | xargs ls -dils | grep "1*1[46]," | cut -d: -f2 | cut -d" " -f2; echo /proc/asound/dev/*`
ossdevs="/dev/admmidi? /dev/adsp? /dev/amidi? /dev/audio* /dev/dmfm* \
/dev/dmmidi? /dev/dsp* /dev/dspW* /dev/midi0? /dev/mixer? /dev/music \
/dev/patmgr? /dev/sequencer* /dev/sndstat"
alsadevs="/proc/asound/dev/*"
fuser -k $ossdevs $alsadevs 2> /dev/null 1>/dev/null
#
# remove all sequencer connections if any
#
if [ -f /proc/asound/seq/clients -a -x $aconnect ]; then
$aconnect --removeall
fi
}
function stop() {
#
# store driver settings
# [nando: we always initialize the driver to the default settings]
#
# if [ -x $alsactl ]; then
# $alsactl -f $asoundcfg store
# else
# echo -n -e "${rc_warning}!!!alsactl not found!!!${rc_reset} "
# fi
#
# remove all sound modules
#
/sbin/lsmod | grep -E "^snd" | grep -Ev "^(snd-page-alloc|snd-hammerfall-mem)" | while read line; do \
/sbin/rmmod `echo $line | cut -d ' ' -f 1`; \
done
# remove the 2.2 soundcore module (if possible)
/sbin/rmmod soundcore 2> /dev/null
/sbin/rmmod gameport 2> /dev/null
#
# remove lockfile if lockdir exists
#
if [ -d /var/lock/subsys ] ; then
rm -f /var/lock/subsys/alsasound
fi
}
# See how we were called.
case "$1" in
start)
# Start driver if it isn't already up.
if [ -d /proc/asound ]; then
echo "ALSA driver already running"
fi
start
if [ $redhat ] ; then
if [ -d /proc/asound -a -d /var/lock/subsys ]; then
touch /var/lock/subsys/alsasound
fi
fi
;;
stop)
# Stop daemons.
if [ -d /proc/asound ]; then
echo -n "Shutting down sound driver"
terminate
stop
if [ $redhat ] ; then
if [ -d /var/lock/subsys ]; then
rm -f /var/lock/subsys/alsasound
fi
success "sound driver stop" && echo
else
echo -e "$rc_done"
fi
fi
;;
restart|reload)
$0 stop
$0 start
;;
status)
if [ -d /proc/asound ]; then
echo -n "ALSA sound driver loaded."
else
echo -n "ALSA sound driver not loaded."
fi
echo
;;
*)
echo "Usage: alsasound {start|stop|restart|status}"
exit 1
esac
exit 0
