pf2slice-initscript

   1 #!/bin/sh
   2 #
   3 # chkconfig: 2345 56 25
   4 # description: planetflow slice initscript
   5 #
   6
   7 #. /etc/rc.d/init.d/functions
   8
   9 DELTA=10 # Time to sleep between polls
  10 VSYSSCRIPT="/vsys/pfmount.in"
  11 VSYSCMD="pf"
  12
  13 watchdog(){
  14     while [ 1 ]; do
  15         # if the file exists, try writing to it.
  16         if [ -a ${VSYSSCRIPT} ]; then
  17                 echo "Writing to Fifo"
  18                 /bin/echo ${VSYSCMD} > ${VSYSSCRIPT} &
  19                 PID=$!
  20                 #  Wait for command to complete
  21                 sleep $DELTA
  22                 # check to see if PID is running
  23                 if kill -0 ${PID} >/dev/null 2>&1 ; then
  24                     # if PID is running, it's likely hung.  Kill it.
  25                     echo "Blocked on Fifo. Killing"
  26                     kill ${PID}
  27                 else
  28                     # assume if PID is no longer, command completed
  29                     echo "Completed. Exitting"
  30                     exit 0
  31                 fi
  32         else
  33             # no pipe yet.  vsys probably hasn't started yet.  wait.
  34             echo "${VSYSSCRIPT} doesn't exist"
  35             sleep $DELTA
  36         fi
  37     done
  38 }
  39
  40
  41 case "$1" in
  42     start)
  43         echo -n "starting the planetflow slice:"
  44             watchdog 2> /dev/null
  45         ;;
  46
  47     *)
  48         echo "Usage: $0 {start|stop|restart|status}"
  49         RETVAL=1
  50 esac
  51
  52
  53
  54 exit $RETVAL