#!/bin/sh
# nfs   This shell script starts and stops the nfs services in a distribution
#       independent fashion.
## description:  starts and stops nfs client services
# chkconfig: 2345 99 01
#
# Copyright (c) 2000-2001 Mission Critical Linux, Inc.
#

PATH=/sbin:/bin:/usr/sbin:/usr/bin
export PATH

# Who am I?
SCRIPT_NAME=`basename $0`

# Grab our daemon functions.
. `dirname $0`/nfs-functions

# Kernel daemons and options
PREFIX="rpc."		# Prefix for kernel execs (usually "rpc.")
LOCKD="lockd"		# Lockd

# User daemons and options
STATD="rpc.statd"	# NLM Server


# We need rpc.lockd on kernels < 2.2.18 if Trond Myklebust and Dave Higgens'
# NFS patches have not been applied.
lockd_not_needed()
{
    if [ "`uname`" = "Linux" ]; then 

        os_rel=`uname -r`

        # This messily chops up the linux version number and turns it into
        # a comparable integer.
        # 
        # printf  value                         description
        # %d      `echo $os_rel | cut -f1 -d.`  Major Linux release #
        # %02d    `echo $os_rel | cut -f2 -d.`  Minor Linux release #
        # %02d    `echo $os_rel | cut -f3 -d.`  Patchlevel
        #
        linux_version_code=`printf "%d%02d%02d" \`echo $os_rel | cut -f1 -d.\` \`echo $os_rel | cut -f2 -d.\` \`echo $os_rel | cut -f3 -d.\``
	return $((linux_version_code < 20218))
    fi

    # On non-Linux systems, assume that lockd is always required.
    return 1
}

# We use "type -path" instead of "which" since it's internal to bash.
[ -x "`type -path $STATD`" ] || exit 0

# Check to see if we need lockd (ie, nfsd doesn't handle spawning and
# maintaining it)
if lockd_not_needed
then
    unset LOCKD
else
    # We need it.  Make sure we have it.
    [ -x "`type -path $PREFIX$LOCKD`" ] || exit 0
fi

# Handle how we were called.
case "$1" in
start)
    # Start rpc.statd daemon without options...
    echo -n "Starting $STATD: "
    startdaemon $STATD

    if [ -n "$LOCKD" ]
    then
        echo -n "Starting $LOCKD: "
        startdaemon $PREFIX$LOCKD
    fi

    # if this lock file doesn't exist, init won't even try to run
    # the shutdown script for this service on RedHat systems!
    # on non-RedHat systems, /var/lock/subsys may not exist.
    touch /var/lock/subsys/$SCRIPT_NAME &> /dev/null
    ;;

stop)
    echo -n "Stopping $STATD: "
    stopdaemon $STATD

    if [ -n "$LOCKD" ]; then 
        echo -n "Stopping $LOCKD: "
        stopdaemon $LOCKD
    fi

    rm -f /var/lock/subsys/$SCRIPT_NAME 
    ;;

restart)
    $0 stop
    $0 start
    ;;

status)
    daemonstatus $STATD

    if [ -n "$LOCKD" ]; then
        daemonstatus $LOCKD
    fi

    exit 0
    ;;

*)
    echo "Usage: $0 {start|stop|status|restart}"
    exit 1
esac

exit 0