#!/bin/sh
#
# Date   : Feb 04, 2004
# Author : Terminator, <jimmy@mtc.dhs.org>
#
# rc.autofs - Starts the filesystem automounter
# Based on rc.autofs by David Cantrell, <david@slackware.com>

#
# This function will build a list of automount commands to execute in
# order to activate all the mount points. It is used to figure out
# the difference of automount points in case of a reload
#
function getmounts()
{
   # Check for local maps to be loaded
   if [ -f /etc/auto.master ]
   then
      cat /etc/auto.master | sed -e '/^#/d' -e '/^$/d'| (
         while read dir map options
         do
            if [ ! -z "$dir" -a ! -z "$map" \
                 -a x`echo "$map" | cut -c1` != 'x-' ]
            then
               map=`echo "/etc/$map" | sed -e 's:^/etc//:/:'`
               options=`echo "$options" | sed -e 's/\(^\|[ \t]\)-/\1/g'`

               if [ ! -d $dir ]
               then
                  mkdir -p $dir
               fi

               if [ -x $map ]
               then
                  echo "/usr/sbin/automount -p /var/run/automount.pid -t 3 $dir program $map $options $localoptions"
               elif [ -f $map ]
               then
                  echo "/usr/sbin/automount -p /var/run/automount.pid -t 3 $dir file $map $options $localoptions"
               else
                  echo "/usr/sbin/automount -p /var/run/automount.pid -t 3 $dir `basename $map` $options $localoptions"
               fi
            fi
         done )
   fi

   # Check for NIS maps to be loaded
   if [ -e /usr/bin/ypcat ] && 
      [ `ypcat -k auto.master 2>/dev/null | wc -l` -gt 0 ]
   then
      ypcat -k auto.master | (
         while read dir map options
         do
            if [ ! -z "$dir" -a ! -z "$map" \
                 -a x`echo "$map" | cut -c1` != 'x-' ]
            then
               map=`echo "$map" | sed -e 's/^auto_/auto./'`

               if echo $options | grep -- '-t' >/dev/null 2>&1
               then
                  mountoptions="--timeout $(echo $options | \
                     sed 's/^.*-t\(imeout\)*[ \t]*\([0-9][0-9]*\).*$/\2/g')"
               fi

               options=`echo "$options" | sed -e '
                  s/--*t\(imeout\)*[ \t]*[0-9][0-9]*//g
                  s/\(^\|[ \t]\)-/\1/g'`

               if [ ! -d $dir ]
               then
                  mkdir -p $dir
               fi

               echo "/usr/sbin/automount -p /var/run/automount.pid -t 3 $dir yp $map $options $localoptions"
            fi
         done )
   fi
}


autofs_start() {
  if [ -x /usr/sbin/automount ]; then
    echo "Starting autofs daemons...  "
    (grep -q autofs /proc/filesystems || modprobe -q autofs || modprobe -q autofs4) 2> /dev/null
    getmounts | sh
  fi
}

autofs_stop() {
  echo "Stopping autofs daemons...  "
  umount -a -f -t autofs 2> /dev/null
  killall -15 automount 2> /dev/null
  modprobe -q -r isofs 2> /dev/null
  (modprobe -q -r autofs4 || modprobe -q -r autofs) 2> /dev/null
}

autofs_restart() {
  autofs_stop
  sleep 1
  autofs_start
}

case "$1" in
'start')
  autofs_start
  ;;
'stop')
  autofs_stop
  ;;
'restart')
  autofs_restart
  ;;
*)
  echo "usage $0 start|stop|restart"
esac