package/base-files/files/etc/rc.common

   1 #!/bin/sh
   2 # Copyright (C) 2006-2011 OpenWrt.org
   3
   4 . $IPKG_INSTROOT/etc/functions.sh
   5
   6 initscript=$1
   7 action=${2:-help}
   8 shift 2
   9
  10 #
  11 # service: simple wrapper around start-stop-daemon
  12 #
  13 # Usage: service ACTION EXEC ARGS...
  14 #
  15 # Action:
  16 #   -S,--start           start EXEC, passing it ARGS as its arguments
  17 #   -K,--stop            stop EXEC (send it a $SERVICE_SIG_STOP signal)
  18 #   -R,--reload          reload EXEC (send it a $SERVICE_SIG_RELOAD signal)
  19 #
  20 # Environment variables used:
  21 #   SERVICE_DAEMONIZE    run EXEC in background
  22 #   SERVICE_WRITE_PID    create a pid file and use it
  23 #   SERVICE_USE_PID      assume EXEC creates its own pid file and use it
  24 #   SERVICE_PID_FILE     pid file to use (default to /var/run/EXEC.pid)
  25 #   SERVICE_SIG_RELOAD   signal used for reloading
  26 #   SERVICE_SIG_STOP     signal used for stopping
  27 #   SERVICE_UID          user EXEC should be run as
  28 #   SERVICE_GID          group EXEC should be run as
  29 #
  30 #   SERVICE_DEBUG        don't do anything, but show what would be done
  31 #   SERVICE_QUIET        don't print anything
  32 #
  33
  34 SERVICE_QUIET=1
  35 SERVICE_SIG_RELOAD="HUP"
  36 SERVICE_SIG_STOP="TERM"
  37
  38 service() {
  39         local ssd
  40         local ssd_pid_file
  41         local ssd_sig
  42         local ssd_start
  43         ssd="${SERVICE_DEBUG:+echo }start-stop-daemon${SERVICE_QUIET:+ -q}"
  44         case "$1" in
  45           -S|--start|start)
  46                 ssd="$ssd -S"
  47                 ssd_start=1
  48                 ;;
  49           -K|--stop|stop)
  50                 ssd="$ssd -K"
  51                 ssd_sig="$SERVICE_SIG_STOP"
  52                 ;;
  53           -R|--reload|reload)
  54                 ssd="$ssd -K"
  55                 ssd_sig="$SERVICE_SIG_RELOAD"
  56                 ;;
  57           *)
  58                 echo "ssd: unknow action '$1'" 1>&2
  59                 return 1
  60         esac
  61         shift
  62         if [ -z "$1" ]; then
  63                 echo "ssd: missing arguments" 1>&2
  64                 return 1
  65         fi
  66         ssd="$ssd -x $1"
  67         if [ -n "$SERVICE_PID_FILE$SERVICE_USE_PID$SERVICE_WRITE_PID" ]; then
  68                 ssd="$ssd -p ${SERVICE_PID_FILE:-/var/run/${1##*/}.pid}"
  69         fi
  70         ssd="$ssd${SERVICE_UID:+ -c $SERVICE_UID${SERVICE_GID:+:$SERVICE_GID}}"
  71         if [ -n "$ssd_start" ]; then
  72                 ssd="$ssd${SERVICE_DAEMONIZE:+ -b}${SERVICE_WRITE_PID:+ -m}"
  73         else
  74                 ssd="$ssd${ssd_sig:+ -s $ssd_sig}"
  75         fi
  76         shift
  77         $ssd${1:+ -- "$@"}
  78 }
  79
  80 service_start() {
  81         service -S "$@"
  82 }
  83
  84 service_stop() {
  85         service -K "$@"
  86 }
  87
  88 service_reload() {
  89         service -R "$@"
  90 }
  91
  92 start() {
  93         return 0
  94 }
  95
  96 stop() {
  97         return 0
  98 }
  99
 100 reload() {
 101         return 1
 102 }
 103
 104 restart() {
 105         trap '' TERM
 106         stop "$@"
 107         start "$@"
 108 }
 109
 110 boot() {
 111         start "$@"
 112 }
 113
 114 shutdown() {
 115         stop
 116 }
 117
 118 disable() {
 119         name="$(basename "${initscript}")"
 120         rm -f "$IPKG_INSTROOT"/etc/rc.d/S??$name
 121         rm -f "$IPKG_INSTROOT"/etc/rc.d/K??$name
 122 }
 123
 124 enable() {
 125         name="$(basename "${initscript}")"
 126         disable
 127         [ -n "$START" -o -n "$STOP" ] || {
 128                 echo "/etc/init.d/$name does not have a START or STOP value"
 129                 return 1
 130         }
 131         [ "$START" ] && ln -s "../init.d/$name" "$IPKG_INSTROOT/etc/rc.d/S${START}${name##S[0-9][0-9]}"
 132         [ "$STOP"  ] && ln -s "../init.d/$name" "$IPKG_INSTROOT/etc/rc.d/K${STOP}${name##K[0-9][0-9]}"
 133 }
 134
 135 enabled() {
 136         name="$(basename "${initscript}")"
 137         [ -x "$IPKG_INSTROOT/etc/rc.d/S${START}${name##S[0-9][0-9]}" ]
 138 }
 139
 140 depends() {
 141         return 0
 142 }
 143
 144 help() {
 145         cat <<EOF
 146 Syntax: $initscript [command]
 147
 148 Available commands:
 149         start   Start the service
 150         stop    Stop the service
 151         restart Restart the service
 152         reload  Reload configuration files (or restart if that fails)
 153         enable  Enable service autostart
 154         disable Disable service autostart
 155 $EXTRA_HELP
 156 EOF
 157 }
 158
 159 . "$initscript"
 160
 161 ALL_COMMANDS="start stop reload restart boot shutdown enable disable enabled depends ${EXTRA_COMMANDS}"
 162 list_contains ALL_COMMANDS "$action" || action=help
 163 [ "$action" = "reload" ] && action='eval reload "$@" || restart "$@" && :'
 164 $action "$@"