#!/bin/sh
# Start/stop/restart the NFS server.
#
# This is an init script for the knfsd NFS daemons.
# To use NFS, you must first set up /etc/exports.
# See exports(5) for information on /etc/exports format.
#
# Written for Slackware Linux by Patrick J. Volkerding <volkerdi@slackware.com>.

# Source default settings:
if [ -r /etc/default/rpc ]; then
  . /etc/default/rpc
fi
if [ -r /etc/default/nfs ]; then
  . /etc/default/nfs
fi

nfsd_start() {
  # There used to be "sanity checks" here to exit without starting if various
  # config files didn't exist, or didn't contain certain expected content.
  # This behavior led to some bugs and has been removed. It's not our business
  # to check your config files - that's for the binaries that use them.

  # If we do not detect nfsd support built into the kernel (or previously
  # loaded as a module), we will try to load the nfsd.ko kernel module:
  if [ ! -r /proc/1/net/rpc/nfsd ]; then
    /bin/modprobe nfsd
  fi

  # Mount the nfsd filesystem:
  if awk '$NF == "nfsd"' /proc/filesystems | grep -q . ; then
    if ! awk '$3 == "nfsd" && $2 == "/proc/fs/nfs"' /proc/mounts | grep -q . ; then
      /bin/mount -t nfsd nfsd /proc/fs/nfs 2> /dev/null
    fi
  fi

  # If basic RPC services are not running, start them:
  if ! ps axc | grep -q rpc.statd ; then
    if [ -r /etc/rc.d/rc.rpc ]; then
      sh /etc/rc.d/rc.rpc start
    else
      # Sure, we tested for rpc.statd, but this is the probable cause:
      echo "FATAL:  Can't start NFS server without rpcbind package."
      sleep 5
      exit 1
    fi
  fi

  echo "Starting NFS server daemons:"

  if [ -x /bin/exportfs ]; then
    echo "  /bin/exportfs -r"
    /bin/exportfs -r
  fi

  if [ -x /bin/rpc.rquotad ]; then
    if [ -n "$RPC_RQUOTAD_PORT" ]; then
      RPC_RQUOTAD_OPTS="$RPC_RQUOTAD_OPTS -p $RPC_RQUOTAD_PORT"
    fi
    echo "  /bin/rpc.rquotad $RPC_RQUOTAD_OPTS"
    /bin/rpc.rquotad $RPC_RQUOTAD_OPTS
  fi

  # Start nfsd servers - 8 if not set otherwise (an old Sun standard):
  if [ -x /bin/rpc.nfsd ]; then
    if [ -z "$RPC_NFSD_COUNT" ]; then
      RPC_NFSD_COUNT=8
    fi
    echo "  /bin/rpc.nfsd $RPC_NFSD_OPTS $RPC_NFSD_COUNT"
    /bin/rpc.nfsd $RPC_NFSD_OPTS $RPC_NFSD_COUNT
  fi

  if [ -x /bin/rpc.mountd ]; then
    if [ -n "$RPC_MOUNTD_PORT" ]; then
      RPC_MOUNTD_OPTS="$RPC_MOUNTD_OPTS -p $RPC_MOUNTD_PORT"
    fi
    echo "  /bin/rpc.mountd $RPC_MOUNTD_OPTS"
    /bin/rpc.mountd $RPC_MOUNTD_OPTS
  fi

}

nfsd_stop() {
  killall rpc.mountd 2> /dev/null
  killall nfsd 2> /dev/null
  sleep 1
  killall -9 nfsd 2> /dev/null # make sure :)
  killall rpc.rquotad 2> /dev/null
  /bin/exportfs -au 2> /dev/null
}

nfsd_restart() {
  nfsd_stop
  sleep 1
  nfsd_start
}

case "$1" in
'start')
  nfsd_start
  ;;
'stop')
  nfsd_stop
  ;;
'restart')
  nfsd_restart
  ;;
*)
  echo "usage $0 start|stop|restart"
esac
