org.handhelds.familiar/packages/sysvinit/sysvinit/rc

   1 #!/bin/sh
   2 #
   3 # rc            This file is responsible for starting/stopping
   4 #               services when the runlevel changes.
   5 #
   6 #               Optimization feature:
   7 #               A startup script is _not_ run when the service was
   8 #               running in the previous runlevel and it wasn't stopped
   9 #               in the runlevel transition (most Debian services don't
  10 #               have K?? links in rc{1,2,3,4,5} )
  11 #
  12 # Author:       Miquel van Smoorenburg <miquels@cistron.nl>
  13 #               Bruce Perens <Bruce@Pixar.com>
  14 #
  15 # Version:      @(#)rc  2.78  07-Nov-1999  miquels@cistron.nl
  16 #
  17
  18 . /etc/default/rcS
  19 export VERBOSE
  20
  21 #
  22 # Start script or program.
  23 #
  24 startup() {
  25   case "$1" in
  26         *.sh)
  27                 sh "$@"
  28                 ;;
  29         *)
  30                 "$@"
  31                 ;;
  32   esac
  33 }
  34
  35   # Ignore CTRL-C only in this shell, so we can interrupt subprocesses.
  36   trap ":" INT QUIT TSTP
  37
  38   # Set onlcr to avoid staircase effect.
  39   stty onlcr 0>&1
  40
  41   # Now find out what the current and what the previous runlevel are.
  42
  43   runlevel=$RUNLEVEL
  44   # Get first argument. Set new runlevel to this argument.
  45   [ "$1" != "" ] && runlevel=$1
  46   if [ "$runlevel" = "" ]
  47   then
  48         echo "Usage: $0 <runlevel>" >&2
  49         exit 1
  50   fi
  51   previous=$PREVLEVEL
  52   [ "$previous" = "" ] && previous=N
  53
  54   export runlevel previous
  55
  56   # Is there an rc directory for this new runlevel?
  57   if [ -d /etc/rc$runlevel.d ]
  58   then
  59         # First, run the KILL scripts.
  60         if [ $previous != N ]
  61         then
  62                 for i in /etc/rc$runlevel.d/K[0-9][0-9]*
  63                 do
  64                         # Check if the script is there.
  65                         [ ! -f $i ] && continue
  66
  67                         # Stop the service.
  68                         startup $i stop
  69                 done
  70         fi
  71         # Now run the START scripts for this runlevel.
  72         for i in /etc/rc$runlevel.d/S*
  73         do
  74                 [ ! -f $i ] && continue
  75
  76                 if [ $previous != N ] && [ $previous != S ]
  77                 then
  78                         #
  79                         # Find start script in previous runlevel and
  80                         # stop script in this runlevel.
  81                         #
  82                         suffix=${i#/etc/rc$runlevel.d/S[0-9][0-9]}
  83                         stop=/etc/rc$runlevel.d/K[0-9][0-9]$suffix
  84                         previous_start=/etc/rc$previous.d/S[0-9][0-9]$suffix
  85                         #
  86                         # If there is a start script in the previous level
  87                         # and _no_ stop script in this level, we don't
  88                         # have to re-start the service.
  89                         #
  90                         [ -f $previous_start ] && [ ! -f $stop ] && continue
  91                 fi
  92                 case "$runlevel" in
  93                         0|6)
  94                                 startup $i stop
  95                                 ;;
  96                         *)
  97                                 startup $i start
  98                                 ;;
  99                 esac
 100         done
 101   fi
 102 # eof /etc/init.d/rc