bumblebee-git/bumblebeed.in

   1 #!/bin/bash
   2 # Bumblebee daemon handler script. Distro-independent script to start/stop
   3 # daemon. Should be runnable in any distro but won't give any feedback.
   4
   5 . /etc/rc.d/functions
   6 . /etc/rc.conf
   7
   8 NAME=bumblebeed
   9 BIN='/usr/bin/bumblebeed'
  10 PIDFILE=/var/run/$NAME.pid
  11
  12 # returns 0 if running, non-zero otherwise
  13 status() {
  14         local pid
  15         # program is not running
  16         [ -s "$PIDFILE" ] || return 3
  17
  18         pid="$(cat "$PIDFILE" 2>/dev/null)"
  19
  20         # process is not running, pid file not properly cleared
  21         kill -0 "$pid" 2>/dev/null || return 1
  22
  23         # process is running
  24         return 0
  25 }
  26
  27 start() {
  28         # program is not installed
  29         [ -x "$BIN" ] || return 5
  30
  31         # return if already started
  32         status && return 0 || true
  33         "$BIN" --daemon 2>/dev/null
  34         status && return 0 || return 1
  35 }
  36
  37 stop() {
  38         local retries=10
  39         local pid="$(cat "$PIDFILE" 2>/dev/null)"
  40
  41         # not running, we're done
  42         status || return 0
  43
  44         # first ask the daemon nicely to quit
  45         kill "$pid" || true
  46         # and check whether it listened
  47         while [ $retries -gt 0 ]; do
  48                 retries=$((retries - 1))
  49
  50                 # process has gone, return success
  51                 status || return 0
  52                 # wait for half a minut before polling again
  53                 sleep .5
  54         done
  55         # failed to stop or timeout
  56         return 1
  57 }
  58
  59 restart() {
  60         stop && start
  61 }
  62
  63 case "$1" in
  64   start)
  65         stat_busy "Starting Bumblebee"
  66     if start; then
  67         stat_done
  68         add_daemon $NAME
  69     else
  70         stat_fail
  71     fi
  72         ;;
  73   stop)
  74         stat_busy "Stopping Bumblebee"
  75     if stop; then
  76         stat_done
  77         rm_daemon $NAME
  78     else
  79         stat_fail
  80     fi
  81         ;;
  82   restart)
  83     stat_busy "Stopping Bumblebee"
  84     if stop; then
  85         stat_done
  86         rm_daemon $NAME
  87     else
  88         stat_fail
  89     fi
  90     sleep 1
  91     stat_busy "Starting Bumblebee"
  92     if start; then
  93         stat_done
  94         add_daemon $NAME
  95     else
  96         stat_fail
  97     fi
  98     ;;
  99   *)
 100         echo "Usage: $0 {start|stop|restart|status}"
 101         exit 1
 102         ;;
 103 esac