#!/bin/sh
#
# nfs-kernel-server
#		This shell script takes care of starting and stopping
#               the kernel-mode NFS server.
#
# chkconfig: 345 60 20
# description: NFS is a popular protocol for file sharing across TCP/IP \
#              networks. This service provides NFS server functionality, \
#              which is configured via the /etc/exports file.
#

PREFIX=/usr
[ -x $PREFIX/sbin/rpc.nfsd ] || exit 0
[ -x $PREFIX/sbin/rpc.mountd ] || exit 0
[ -x $PREFIX/sbin/exportfs ] || exit 0

# What is this?
DESC="NFS kernel daemon"

RPCNFSDCOUNT=8	# Number of servers to be started up by default
RPCMOUNTDOPTS=

# Make sure that daemon cwds are in root fs.
cd /

# See how we were called.
case "$1" in
  start)
	if grep -q '^/' /etc/exports; then
		printf "Exporting directories for $DESC..."
		$PREFIX/sbin/exportfs -r
		echo "done."

		printf "Starting $DESC:"
		printf " nfsd"
		start-stop-daemon --start --quiet \
		    --exec $PREFIX/sbin/rpc.nfsd -- $RPCNFSDCOUNT
		printf " mountd"
		$PREFIX/bin/rpcinfo -u localhost nfs 3 > /dev/null 2>&1 ||
		    RPCMOUNTDOPTS="$RPCMOUNDOPTS --no-nfs-version 3"
		start-stop-daemon --start --quiet \
		    --exec $PREFIX/sbin/rpc.mountd -- $RPCMOUNTDOPTS
		echo "."
	else
		echo "Not starting $DESC: No exports."
	fi
	;;

  stop)
	printf "Stopping $DESC: mountd"
	start-stop-daemon --stop --oknodo --quiet \
	    --exec $PREFIX/sbin/rpc.mountd
	printf " nfsd"
	start-stop-daemon --stop --oknodo --quiet \
	    --name nfsd --user root --signal 2
	echo "."

	printf "Unexporting directories for $DESC..."
	$PREFIX/sbin/exportfs -au
	echo "done."
	;;

  reload | force-reload)
	printf "Re-exporting directories for $DESC..."
	$PREFIX/sbin/exportfs -r
	echo "done."
	;;

  restart)
	$0 stop
	sleep 1
	$0 start
	;;

  *)
	echo "Usage: nfs-kernel-server {start|stop|reload|force-reload|restart}"
	exit 1
	;;
esac

exit 0