#!/bin/sh
#
# nfs           This shell script takes care of starting and stopping
#               the NFS services.
#
# 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.
#
### BEGIN INIT INFO
# Provides: nfs
# Required-Start: $network $portmap
# Required-Stop: $network $portmap
# Default-Start: 3 4 5
# Short-Description: NFS services
# 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.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 0

# fail if /etc/exports doesn't exist
if [ ! -f /etc/exports ]; then
    echo "/etc/exports does not exist"
    exit 1
fi

# Set defaults and read configuration
LOCKFILE=/var/lock/subsys/nfs
MOUNTD_NFS_V2=default
MOUNTD_NFS_V3=default
RPCNFSDCOUNT=8
RQUOTAD=`type -path rpc.rquotad`
[ -f /etc/sysconfig/nfs ] && . /etc/sysconfig/nfs

start() {
    if [ ! -f $LOCKFILE ]; then
	/sbin/service portmap start

	# Start daemons.

	action "Starting NFS services: " /usr/sbin/exportfs -r

	# Set the ports lockd should listen on
	if [ -n "$LOCKD_TCPPORT" ]; then
	    /sbin/sysctl -w fs.nfs.nlm_tcpport=$LOCKD_TCPPORT >/dev/null 2>&1
	fi
	if [ -n "$LOCKD_UDPPORT" ]; then
	    /sbin/sysctl -w fs.nfs.nlm_udpport=$LOCKD_UDPPORT >/dev/null 2>&1
	fi

	if [ -n "$RQUOTAD" -a "$RQUOTAD" != "no" ]; then
	    echo -n "Starting NFS quotas: "
	    [ -n "$RQUOTAD_PORT" ] \
		&& RPCRQUOTADOPTS="$RPCRQUOTADOPTS -p $RQUOTAD_PORT"
	    daemon rpc.rquotad $RPCRQUOTADOPTS
	    echo
	fi

	[ -n "$MOUNTD_PORT" ] \
	    && RPCMOUNTDOPTS="$RPCMOUNTDOPTS -p $MOUNTD_PORT"

	case $MOUNTD_NFS_V2 in
	    no|NO)
		RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 2"
		;;
	esac

	case $MOUNTD_NFS_V3 in
	    no|NO)
		RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"
		;;
	esac

	echo -n "Starting NFS mountd: "
	daemon rpc.mountd $RPCMOUNTDOPTS
	echo

	if [ "$USE_NFS4" = yes ]; then
	    /sbin/service rpcidmapd start
	    if [ "$SECURE_NFS" = yes ]; then
		/sbin/service rpcsvcgssd start
	    fi
	fi

	echo -n "Starting NFS daemon: "
	daemon rpc.nfsd $RPCNFSDCOUNT
	echo

	touch $LOCKFILE
    fi
    return 0
}

stop() {
    if [ "$USE_NFS4" = yes ]; then
	/sbin/service rpcidmapd stop
	if [ "$SECURE_NFS" = yes ]; then
	    /sbin/service rpcsvcgssd stop
	fi
    fi
    echo -n "Shutting down NFS mountd: "
    killproc rpc.mountd
    echo
    echo -n "Shutting down NFS daemon: "
    killproc nfsd
    echo
    if [ -n "$RQUOTAD" -a "$RQUOTAD" != "no" ]; then
	echo -n "Shutting down NFS quotas: "
	killproc rpc.rquotad
	echo
    fi
    # Reset the lockd ports if they were set
    if [ -n "$LOCKD_TCPPORT" ]; then
	/sbin/sysctl -w fs.nfs.nlm_tcpport=0 >/dev/null 2>&1
    fi
    if [ -n "$LOCKD_UDPPORT" ]; then
	/sbin/sysctl -w fs.nfs.nlm_udpport=0 >/dev/null 2>&1
    fi
    # Do it the last so that clients can still access the server
    # when the server is running.
    action "Shutting down NFS services: " /usr/sbin/exportfs -au
    rm -f $LOCKFILE
    return 0
}

# See how we were called.
case "$1" in
    start)
	start
	;;
    stop)
	stop
	;;
    status)
	if [ "$USE_NFS4" = yes ]; then
	    /sbin/service rpcidmapd status
	    if [ "$SECURE_NFS" = yes ]; then
		/sbin/service rpcsvcgssd status
	    fi
	fi
	status rpc.mountd
	if [ -n "$RQUOTAD" -a "$RQUOTAD" != "no" ]; then
	    status rpc.rquotad
	fi
	status nfsd
	;;
    restart)
	stop
	start
	;;
    reload)
	/usr/sbin/exportfs -r
	touch $LOCKFILE
	;;
    probe)
	if [ ! -f $LOCKFILE ]; then
	    echo "start"
	    exit 0
	fi
	/sbin/pidof rpc.mountd >/dev/null 2>&1; MOUNTD="$?"
	/sbin/pidof nfsd >/dev/null 2>&1; NFSD="$?"
	if [ $MOUNTD = 1 -o $NFSD = 1 ]; then
	    echo "restart"
	    exit 0
	fi
	if [ /etc/exports -nt $LOCKFILE ]; then
	    echo "reload"
	    exit 0
	fi
	;;
    condrestart)
	[ -x /usr/sbin/rpc.svcgssd ] && /sbin/service rpcsvcgssd condrestart
	if [ -f $LOCKFILE ]; then
	    stop
	    start
	fi
	;;
    *)
	echo "Usage: nfs {start|stop|status|restart|reload|probe|condrestart}"
	exit 1
	;;
esac

exit $?