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#!/bin/sh

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#------------------------------------------------------------------------------

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#

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#  EtherCAT rc script

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#

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#  $Id$

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#

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#  Copyright (C) 2006  Florian Pose, Ingenieurgemeinschaft IgH

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#

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#  This file is part of the IgH EtherCAT Master.

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#

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#  The IgH EtherCAT Master is free software; you can redistribute it

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#  and/or modify it under the terms of the GNU General Public License

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#  as published by the Free Software Foundation; version 2 of the License.

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#

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#  The IgH EtherCAT Master is distributed in the hope that it will be

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#  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of

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#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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#  GNU General Public License for more details.

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#

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#  You should have received a copy of the GNU General Public License

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#  along with the IgH EtherCAT Master; if not, write to the Free Software

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#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

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#

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#------------------------------------------------------------------------------

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### BEGIN INIT INFO

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# Provides:          EtherCAT

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# Default-Start:     3 5

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# Default-Stop:      0 1 2 6

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# Short-Description: EtherCAT master driver and network device

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# Description:

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### END INIT INFO

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#------------------------------------------------------------------------------

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ETHERCAT_CONFIG=/etc/sysconfig/ethercat

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test -r $ETHERCAT_CONFIG || { echo "$ETHERCAT_CONFIG not existing";

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	if [ "$1" = "stop" ]; then exit 0;

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	else exit 6; fi; }

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. $ETHERCAT_CONFIG

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#------------------------------------------------------------------------------

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# Shell functions sourced from /etc/rc.status:

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#      rc_check         check and set local and overall rc status

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#      rc_status        check and set local and overall rc status

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#      rc_status -v     be verbose in local rc status and clear it afterwards

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#      rc_status -v -r  ditto and clear both the local and overall rc status

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#      rc_status -s     display "skipped" and exit with status 3

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#      rc_status -u     display "unused" and exit with status 3

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#      rc_failed        set local and overall rc status to failed

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#      rc_failed <num>  set local and overall rc status to <num>

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#      rc_reset         clear both the local and overall rc status

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#      rc_exit          exit appropriate to overall rc status

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#      rc_active        checks whether a service is activated by symlinks

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. /etc/rc.status

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# Reset status of this service

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rc_reset

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# Return values acc. to LSB for all commands but status:

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# 0	  - success

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# 1       - generic or unspecified error

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# 2       - invalid or excess argument(s)

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# 3       - unimplemented feature (e.g. "reload")

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# 4       - user had insufficient privileges

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# 5       - program is not installed

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# 6       - program is not configured

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# 7       - program is not running

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# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)

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#

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# Note that starting an already running service, stopping

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# or restarting a not-running service as well as the restart

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# with force-reload (in case signaling is not supported) are

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# considered a success.

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case "$1" in

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    start)

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	echo -n "Starting EtherCAT master... "

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	# remove incompatible modules

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	for mod in 8139too 8139cp; do

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		if lsmod | grep "^$mod " > /dev/null; then

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			if ! rmmod $mod; then

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				/bin/false

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				rc_status -v

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				rc_exit

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			fi;

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		fi;

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	done

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	modprobe ec_8139too ec_device_index=$DEVICEINDEX

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	rc_status -v

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	;;

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    stop)

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	echo -n "Shutting down EtherCAT master... "

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	for mod in ec_8139too ec_master; do

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		if lsmod | grep "^$mod " > /dev/null; then

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			if ! rmmod $mod; then

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				/bin/false

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				rc_status -v

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				rc_exit

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			fi;

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		fi;

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	done

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	if ! modprobe 8139too; then

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	    echo "Warning: Failed to restore 8139too module."

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	fi

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	rc_status -v

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	;;

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    restart)

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	$0 stop

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	$0 start

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	rc_status

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	;;

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    status)

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	echo -n "Checking for EtherCAT... "

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	# Return value is slightly different for the status command:

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	# 0 - service up and running

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	# 1 - service dead, but /var/run/  pid  file exists

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	# 2 - service dead, but /var/lock/ lock file exists

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	# 3 - service not running (unused)

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	# 4 - service status unknown :-(

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	# 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)

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	lsmod | grep "^ec_master " > /dev/null

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	master_running=$?

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	lsmod | grep "^ec_8139too " > /dev/null

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	device_running=$?

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	test $master_running -eq 0 -a $device_running -eq 0

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	rc_status -v

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	;;

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esac

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rc_exit

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#------------------------------------------------------------------------------