Ticket #704: gsmd.3

#!/bin/sh
#
# gsmd  This shell script starts and stops gsmd.
#
# chkconfig: 345 90 40
# description: Gsmd manages access to a serial- or USB-connected GSM
# processname: gsmd

# If you must specify special options, uncomment and modify the next line
GSMD_OPTS="-s 115200 -F"
# If your GSM device needs to be powered up, uncommend and modify the next line
GSM_POW="/sys/bus/platform/devices/gta01-pm-gsm.0/power_on"
GSM_DEV="/dev/ttySAC0"
GSMD_BIN="/usr/sbin/gsmd"
LOCK_FILE="/var/lock/subsys/gsmd"

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

RETVAL=0
prog="gsmd"

start() {
        # Power on GSM device
        if [ -e "${GSM_POW}" ]
        then
                if [ `cat ${GSM_POW}` -eq 1 ]
                        then
                                echo "GSM device already on..."
                        else    
                                echo -n "Powering up GSM device..."
                                echo "1" > ${GSM_POW}
                                echo "done"
                fi
        else
                echo "GSM device not found. Aborting startup"
                return 1
        fi

        # Start daemons.

        GSMD_PID=`pidof ${GSMD_BIN}`
        if [ $GSMD_PID ] && [ $GSMD_PID -gt 0 ]
                then
                        echo "Aborting $prog is already running..."
                        if [ -e ${LOCK_FILE} ]
                                then
                                        TMP_GSMD_PID=`cat ${LOCK_FILE}`
                                        if [ ${TMP_GSMD_PID} -eq ${GSMD_PID} ]
                                                then
                                                        echo "Previously running gsmd was correctly started..."
                                                else 
                                                        echo "Previously running gsmd was incorrectly started, fixing..."
                                                        echo ${GSMD_PID} > ${LOCK_FILE}
                                        fi
                                else
                                        echo "Previously running gsmd was incorrectly started, fixing..."
                                        echo ${GSMD_PID} > ${LOCK_FILE}
                        fi
                        return
                else
                        if [ -e ${LOCK_FILE} ]
                                then 
                                        echo "Last gsmd left lock file lying around..."
                                        rm -f ${LOCK_FILE}
                        fi
        fi

        echo -n "Starting $prog: "

        if [ -e "${GSM_DEV}" ]
        then
                chown uucp.uucp ${GSM_DEV}
                mkdir -p /usr/spool/uucp
                chown uucp.uucp /usr/spool/uucp
                stty -F /dev/ttySAC0 crtscts
                ${GSMD_BIN} -p ${GSM_DEV} ${GSMD_OPTS} >/tmp/gsm.log 2>&1 &
                RETVAL=$?
                GSMD_PID=`pidof ${GSMD_BIN}`
                if [ $GSMD_PID ] && [ ${GSMD_PID} -gt 0 ]
                        then
                                echo "Success"
                        else
                                echo "Failure"
                                return
                fi
        else
            # User needs to symlink ${GSM_DEV} to the right thing
            echo "No ${GSM_DEV} device, aborting gsmd startup."
                echo "Failure no gsmd device..." >> /var/log/gsmd-boot
        fi
        [ $RETVAL -eq 0 ] && echo ${GSMD_PID} > ${LOCK_FILE}
        return $RETVAL
}

stop() {
        # Stop daemons.
        echo -n "Shutting down $prog: "
        RUNNING_GSMD_PID=`pidof ${GSMD_BIN}`
        if [ ${RUNNING_GSMD_PID} ] && [ ${RUNNING_GSMD_PID} -gt 0 ]
                then
                        kill ${RUNNING_GSMD_PID}
                        GSMD_PID=`pidof ${GSMD_BIN}`
                        if [ ${GSMD_PID} ] && [ ${GSMD_PID} -gt 0 ]
                                then
                                        echo "Failed"
                                else 
                                        echo "Killed ${RUNNING_GSMD_PID}"
                        fi
                else
                        echo "FAIL, $prog is not running..."
        fi
        if [ -e ${LOCK_FILE} ]
                then
                        echo -n "Removing Lock file..."
                        rm -f ${LOCK_FILE}
                        echo "done"
        fi
        
        if [ -e "${GSM_POW}" ]
                then
                        echo -n "Powering down GSM device..."
                        echo "0" > ${GSM_POW}
                        sleep 1
                        echo "done"
        fi
        return $RETVAL
}

# See how we were called.
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart|reload)
        stop
        start
        RETVAL=$?
        ;;
  condrestart)
        if [ -f ${LOCK_FILE} ]; then
            stop
            start
            RETVAL=$?
        fi
        ;;
  status)
#       status gsmd
#       RETVAL=$?
        ;;
  *)
        echo "Usage: $0 {start|stop|restart|condrestart|status}"
        exit 1
esac

exit $RETVAL