#!/bin/sh
#
# nbd-server daemon control script.
# Written for Slackware Linux by Michiel Broek.
#

BIN=/usr/bin/nbd-server
CONF=/etc/nbd-server/config
PID=/run/nbd-server.pid

nbd_start() {
  # Sanity checks.
  if [ ! -r $CONF ]; then # no config file, exit:
    echo "$CONF does not appear to exist. Abort."
    exit 1
  fi

  if [ -z "$(pidof /usr/bin/nbd-server)" ] ; then
    echo -n "Starting Network Block Device Server"
    [ -x $BIN ] && $BIN -C $CONF -p $PID
    echo
  fi
}


nbd_stop() {
  if [ ! -z "$(pidof /usr/bin/nbd-server)" ] ; then
    echo -n "Stopping Network Block Device Server"
    kill $(pidof /usr/bin/nbd-server)
    sleep 0.2
    rm -f $PID
    echo
  fi
}


nbd_restart() {
  nbd_stop
  sleep 1
  nbd_start
}


nbd_reload() {
  if [ ! -z "$(pidof /usr/bin/nbd-server)" ] ; then
    echo "Reload Network Block Device Server"
    kill -HUP $(pidof /usr/bin/nbd-server)
  fi
}


case "$1" in
  start)
    nbd_start
    ;;
  stop)
    nbd_stop
    ;;
  restart)
    nbd_restart
    ;;
  reload)
    nbd_reload
    ;;
  status)
    if [ -z "$(pidof /usr/bin/nbd-server)" ] ; then
      echo "Status Network Block Device Server not running"
    else
      echo "Status Network Block Device Server running with pid $(pidof /usr/bin/nbd-server)"
    fi 
    ;;
  *)
  echo "usage: `basename $0` {start|status|stop|reload|restart}"
esac