#!/bin/sh
# $Id: nfs-server.init 228079 2008-06-23 13:59:47Z guillomovitch $

# chkconfig: 345 60 20
# description: Kernel NFS server support

### BEGIN INIT INFO
# Provides:          nfs-server
# Required-Start:    nfs-common $named
# Required-Stop:     nfs-common $named
# Default-Start:     3 4 5
# Default-Stop:      0 1 6
# Short-Description: Kernel NFS server support
# 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

# Read config
NAME="NFS kernel daemon"
LOCKFILE=/var/lock/subsys/nfs-server
PROCNFSD_MOUNTPOINT=/proc/fs/nfsd
RPCNFSDCOUNT=8
RPCMOUNTD_OPTIONS=
NEED_SVCGSSD=no
RPCSVCGSSD_OPTIONS=
NEED_QUOTAD=
RPCRQUOTAD_OPTIONS=
[ -f /etc/sysconfig/nfs-server ] && . /etc/sysconfig/nfs-server

# Parse the fstab file, and determine whether we need quotad
if grep -q '^[^#]*quota' /etc/fstab; then
    AUTO_NEED_QUOTAD=yes
else
    AUTO_NEED_QUOTAD=no
fi

case "$NEED_QUOTAD" in
    yes|no)	
        ;;
    *)
        NEED_QUOTAD=$AUTO_NEED_QUOTAD
	;;
esac

do_modprobe() {
    if [ -x /sbin/modprobe -a -f /proc/modules ]; then
        modprobe -q "$1" || true
    fi
}

do_mount() {
    if ! grep -E -qs "$1\$" /proc/filesystems; then
	return 1
    fi
    if ! mountpoint -q "$2"; then
	mount -t "$1" "$1" "$2"
	return
    fi
    return 0
}

start() {
    if [ ! -f $LOCKFILE ]; then
	do_modprobe nfsd

	# See if our running kernel supports the NFS kernel server
	if [ -f /proc/kallsyms ] && ! grep -qE 'init_nf(sd|	)' /proc/kallsyms; then
	    echo "Not starting $NAME: no support in current kernel."
	    return 0
	fi
	
	if ! do_mount nfsd $PROCNFSD_MOUNTPOINT; then
	    NEED_SVCGSSD=no
	fi

	echo -n "Exporting directories for $NAME..."
	exportfs -r
	rc=$?
	echo
	if [ $rc != 0 ]; then
	    return $rc
	fi

	echo "Starting $NAME"
	echo -n "Starting nfsd"
	daemon rpc.nfsd $RPCNFSD_OPTIONS $RPCNFSDCOUNT
	rc=$?
	echo
	if [ $rc != 0 ]; then
	    return $rc
	fi

	if [ "$NEED_SVCGSSD" = "yes" ]; then
	    echo -n "Starting rpc.svcgssd"
	    daemon rpc.svcgssd $RPCSVCGSSD_OPTIONS
	    rc=$?
	    echo
	    if [ $rc != 0 ]; then
		return $rc
	    fi
	fi

	if [ "$NEED_QUOTAD" = "yes" -a -x /usr/sbin/rpc.rquotad ]; then
	    echo -n "Starting rpc.rquotad"
	    daemon rpc.rquotad $RPCRQUOTAD_OPTIONS
	    rc=$?
	    echo
	    if [ $rc != 0 ]; then
		return $rc
	    fi
	fi

	if pidof rpc.idmapd; then
	    killproc rpc.idmapd -SIGHUP 
	fi

	echo -n "Starting rpc.mountd"
	daemon rpc.mountd $RPCMOUNTD_OPTIONS
	rc=$?
	echo
	if [ $rc != 0 ]; then
	    return $rc
	fi

	touch $LOCKFILE
    fi
    return 0
}

stop() {
    echo "Stopping $NAME"
    
    echo -n "Stopping rpc.mountd:"
    killproc rpc.mountd
    rc=$?
    echo
    if [ $rc != 0 ]; then
	return $rc
    fi
	    
    if [ "$NEED_SVCGSSD" = "yes" ]; then
	echo -n "Stopping rpc.svcgssd:"
	killproc rpc.svcgssd 
	rc=$?
	echo
	if [ $rc != 0 ]; then
	    return $rc
	fi
    fi

    if [ "$NEED_QUOTAD" = "yes" -a -x /usr/sbin/rpc.rquotad ]; then
	echo -n "Stopping rpc.rquotad:"
	killproc rpc.rquotad
	rc=$?
	echo
	if [ $rc != 0 ]; then
	    return $rc
	fi
    fi

    echo -n "Stopping nfsd:"
    killproc nfsd
    rc=$?
    echo
    if [ $rc != 0 ]; then
	return $rc
    fi

    echo -n "Unexporting directories for $NAME..."
    exportfs -au
    rc=$?
    echo
    if [ $rc != 0 ]; then
	return $rc
    fi

    if mountpoint -q /proc/nfs/nfsd; then
	exportfs -f
    fi

    rm -f $LOCKFILE
    return 0
}

reload() {
    echo -n "Re-exporting directories for $NAME..."
    exportfs -r
    rc=$?
    echo
    return $rc
}

# See how we were called.
case "$1" in
    start)
	start
	;;
    stop)
	stop
	;;
    status)
	status nfsd
	status rpc.mountd
	if [ "$NEED_QUOTAD" = "yes" -a -x /usr/sbin/rpc.rquotad ]; then
	    status rpc.rquotad
	fi
	if [ "$NEED_SVCGSSD" = yes ]; then
	    status rpc.svcgssd
	fi
	;;
    reload)
	reload
	;;
    restart)
	stop
	sleep 1
	start
	;;
    *)
	echo "Usage: $0 {start|stop|restart|reload|status}"
	exit 1
	;;
esac

exit 0