bridge-stp

   1 #!/bin/bash
   2 #
   3 # Script to start/stop spanning tree called from kernel
   4 # Make sure umask is sane
   5 umask 022
   6
   7 # Set up a default search path.
   8 PATH="/sbin:/usr/sbin:/bin:/usr/bin"
   9 export PATH
  10
  11 if [ $# -ne 2 ]; then
  12    echo "Usage: bridge-stp <bridge> {start|stop}"
  13    exit 1
  14 fi
  15 bridge=$1
  16 service=rstpd
  17 pid_file=/var/run/${servicename}.pid
  18
  19 # Set $pid to pids from /var/run* for {program}.  $pid should be declared
  20 # local in the caller.
  21 # Returns LSB exit code for the 'status' action.
  22 checkpid() {
  23         pid=
  24         if [ -f "$1" ] ; then
  25                 local line p
  26                 read line < "$pid_file"
  27                 for p in $line ; do
  28                         [ -z "${p//[0-9]/}" -a -d "/proc/$p" ] && pid="$pid $p"
  29                 done
  30                 if [ -n "$pid" ]; then
  31                         return 0
  32                 fi
  33                 return 1 # "Program is dead and /var/run pid file exists"
  34         fi
  35         return 3 # "Program is not running"
  36 }
  37
  38 daemon() {
  39     local pid
  40     checkpid $pid_file
  41
  42     [ -n "$pid" ] && return
  43     # start it
  44     /sbin/rstpd
  45     RETVAL=$?
  46     [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$service
  47 }
  48
  49 start() {
  50     daemon
  51 }
  52
  53 case $2 in
  54      start)
  55         daemon
  56         exec /sbin/rstpctl $bridge on ;;
  57      stop)
  58         exec /sbin/rstpctl $bridge off ;;
  59      *)
  60         echo "Unknown action:" $2
  61         echo "Usage: bridge-stp <bridge> {start|stop}"
  62         exit 1
  63 esac