#! /bin/sh
#
# ntpd	init.d script for ntpdc from ntp.isc.org
#chkconfig: 2345 20 20

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

test -x /usr/sbin/ntpd -a -r /etc/ntp.conf || exit 0
# rcS contains TICKADJ
test -r /etc/default/rcS && . /etc/default/rcS

# Functions to do individual actions
settick(){
  	# If TICKADJ is set we *must* adjust it before we start, because the
	# driftfile relies on the correct setting
	test -n "$TICKADJ" -a -x /usr/sbin/tickadj && {
		echo -n "Setting tick to $TICKADJ: "
		/usr/sbin/tickadj "$TICKADJ"
		echo "done"
	}
}
startdaemon(){
        # Perform initial ntp time correction
        if [ -e /etc/ntp_initial.conf ]
        then
            echo -n "Performing initial ntp time correction: "
            # ntpd -q hangs forever if it can't reach a server, so the timeout
            # command is used to avoid this
            /usr/bin/timeout 60s /usr/sbin/ntpd -q -g -c /etc/ntp_initial.conf
            rc=$?
            if [[ $rc == 0 ]]
            then
                echo "done"
                # Time correction successful. Set hardware clock.
                echo -n "Setting hardware clock: "
                /sbin/hwclock -wu
                if [[ $? == 0 ]]
                then
                    echo "done"
                else
                    echo "failed"
                fi
            else
                echo "fail - hardware clock used to set system time"
            fi
        fi

	# We do not use the -g option to start the ntpd. That allows the ntpd to
	# make large time corrections. Although the man page says this will be
	# done only once, testing indicates it can happen multiple times or
	# happen long after the daemon starts, which can break services that
	# are already running at that time.
	echo -n "Starting ntpd: "
	/sbin/start-stop-daemon --start -x /usr/sbin/ntpd -- -u ntp:ntp -p /var/run/ntp.pid "$@"
	echo "done"
}
stopdaemon(){
	echo -n "Stopping ntpd: "
	/sbin/start-stop-daemon --stop -p /var/run/ntp.pid
	echo "done"

        # Set the hardware clock on shutdown so the clock will be as accurate as possible
        # when the system comes back up.
        echo -n "Setting hardware clock: "
        /sbin/hwclock -wu
        if [[ $? == 0 ]]
        then
            echo "done"
        else
            echo "failed"
        fi
}

case "$1" in
  start)
  	settick
	startdaemon
	;;
  stop)
  	stopdaemon
	;;
  status)
	status /usr/sbin/ntpd;
	exit $?
	;;
  force-reload)
  	stopdaemon
  	settick
	startdaemon
	;;
  restart)
  	# Don't reset the tick here
	stopdaemon
	startdaemon
	;;
  reload)
  	# Must do this by hand, but don't do -g
	stopdaemon
	startdaemon
	;;
  *)
	echo "Usage: ntpd { start | stop | status | restart | reload }" >&2
	exit 1
	;;
esac

exit 0