#!/bin/sh

LOG=/var/log/soundoff.log
rm -f $LOG

if test "`/usr/sbin/modinfo|grep OSS` " = " "
then
  exit 0
fi

PIDLIST="`fuser /dev/mixer* /dev/dsp* /dev/midi* /dev/oss/*/* 2>/dev/null`"

if test ! "$PIDLIST " = " "
then
  echo
  echo 'Error: OSS devices are in use by the following application(s)'
  echo

  for n in $PIDLIST
  do
    ps -p $n |grep -v PID
  done

  echo
  echo Please terminate these applications and try soundoff again
  echo
  exit 1
fi

# Save mixer settings automatically 
/usr/sbin/savemixer 

echo Modules to be unloaded >> $LOG
/usr/sbin/modinfo|grep OSS >> $LOG

# Perform three iterations since certain drivers may depend on each other

if test -f /etc/oss/installed_drivers
then
   for i in 1 2 3 4 5
   do
      for n in `cat /etc/oss/installed_drivers | sed 's/ .*//'`
      do
	N=`modinfo|grep " $n "|sed 's/^ //'|sed 's/ .*//'`
	if test "$N " != " "
	then
	   echo Unload $n/$N>> $LOG
	   /usr/sbin/modunload -i $N >> $LOG 2>&1
	fi
      done
   done 
fi

#remove the osscore module that isn't listed in installed_drivers
N=`modinfo|grep " osscore "|sed 's/^ //'|sed 's/ .*//'`
echo Unload osscore >> $LOG
/usr/sbin/modunload -i $N >> $LOG  2>&1

#remove the osscommon module that isn't listed in installed_drivers
N=`modinfo|grep " osscommon "|sed 's/^ //'|sed 's/ .*//'`
echo Unload osscommon >> $LOG
/usr/sbin/modunload -i $N >> $LOG  2>&1

if test "`/usr/sbin/modinfo|grep OSS` " = " "
then
  exit 0
fi

echo Modules left >> $LOG
/usr/sbin/modinfo|grep OSS >> $LOG

exit 0