#!/usr/bin/sh
# TODO: verify with spuso the init info
### BEGIN INIT INFO
# Provides:          moxa-npreal2
# Required-Start:    $syslog $remote_fs $network
# Should-Start:
# Required-Stop:     $null
# Should-Stop:
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: Daemons for MOXA NPort Real TTY
# Description:       Daemons for MOXA NPort Real TTY. The purpose of this
#    daemons together with the kernel module is to map NPort serial port to
#    host tty port. Using this driver, you can use NPort serial port as local
#    tty port.
### END INIT INFO


# description:       Daemons for MOXA NPort Real TTY
# TODO: not sure what this is for
# chkconfig:         2345 90 10
#

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
#      rc_splash arg    sets the boot splash screen to arg (if active)
. /etc/rc.status

# Reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0	  - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.

DRIVERPATH=/usr/lib/npreal2/driver

# set up environment # TODO: is it necessary?
. /etc/profile

case "$1" in
    start)
        echo -n $"Starting npreal2d and npreal2d_redund daemons"
        $DRIVERPATH/mxloadsvr
        # Remove auto-loading of the driver to boot.local, it is
        # automatically added by moxa utilities e.g. mxloadsvr, mxaddsvr
        grep -v npreal2 /etc/rc.d/boot.local > /tmp/nprtmp_rclocal2 2>&1
        cp -f /tmp/nprtmp_rclocal2 /etc/rc.d/boot.local > /dev/null 2>&1
        rm -f /tmp/nprtmp_rclocal2 > /dev/null 2>&1
	    # Remember status and be verbose
        rc_status -v
        ;;
    stop)
        echo -n "Shutting down npreal2d and npreal2d_redund daemons"
	    ## Stop daemon with killproc(8) and if this fails
	    ## killproc sets the return value according to LSB.

        killproc -KILL $DRIVERPATH/npreal2d
        killproc -KILL $DRIVERPATH/npreal2d_redund

        # Remember status and be verbose
        rc_status -v
        ;;
    restart)
        # Stop the service and regardless of whether it was running or not,
        # start it again.
        $0 stop
        $0 start

        # Remember status and be quiet
        rc_status
        ;;
    status)
        echo -n "Checking for service npreal2d and npreal2d_redund "
        ## Check status with checkproc(8), if process is running
        ## checkproc will return with exit status 0.

        # Return value is slightly different for the status command:
        # 0 - service up and running
        # 1 - service dead, but /var/run/  pid  file exists
        # 2 - service dead, but /var/lock/ lock file exists
        # 3 - service not running (unused)
        # 4 - service status unknown :-(
        # 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)

        # NOTE: checkproc returns LSB compliant status values.
        checkproc $DRIVERPATH/npreal2d
        checkproc $DRIVERPATH/npreal2d_redund
        # NOTE: rc_status knows that we called this init script with
        # "status" option and adapts its messages accordingly.
        rc_status -v
        ;;
    *)
        echo "Usage: $0 {start|stop|status|restart}"
        exit 1
    ;;
esac
rc_exit