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

#!/bin/sh
# Copyright (C) 2006-2011 OpenWrt.org

. $IPKG_INSTROOT/etc/functions.sh

initscript=$1
action=${2:-help}
shift 2

#
# service: simple wrapper around start-stop-daemon
#
# Usage: service ACTION EXEC ARGS...
#
# Action:
#   -S,--start           start EXEC, passing it ARGS as its arguments
#   -K,--stop            stop EXEC (send it a $SERVICE_SIG_STOP signal)
#   -R,--reload          reload EXEC (send it a $SERVICE_SIG_RELOAD signal)
#
# Environment variables used:
#   SERVICE_DAEMONIZE    run EXEC in background
#   SERVICE_WRITE_PID    create a pid file and use it
#   SERVICE_USE_PID      assume EXEC creates its own pid file and use it
#   SERVICE_PID_FILE     pid file to use (default to /var/run/EXEC.pid)
#   SERVICE_SIG_RELOAD   signal used for reloading
#   SERVICE_SIG_STOP     signal used for stopping
#   SERVICE_UID          user EXEC should be run as
#   SERVICE_GID          group EXEC should be run as
#
#   SERVICE_DEBUG        don't do anything, but show what would be done
#   SERVICE_QUIET        don't print anything
#

SERVICE_QUIET=1
SERVICE_SIG_RELOAD="HUP"
SERVICE_SIG_STOP="TERM"

service() {
	local ssd
	local ssd_pid_file
	local ssd_sig
	local ssd_start
	ssd="${SERVICE_DEBUG:+echo }start-stop-daemon${SERVICE_QUIET:+ -q}"
	case "$1" in
	  -S|--start|start)
		ssd="$ssd -S"
		ssd_start=1
		;;
	  -K|--stop|stop)
		ssd="$ssd -K"
		ssd_sig="$SERVICE_SIG_STOP"
		;;
	  -R|--reload|reload)
		ssd="$ssd -K"
		ssd_sig="$SERVICE_SIG_RELOAD"
		;;
	  *)
		echo "ssd: unknow action '$1'" 1>&2
		return 1
	esac
	shift
	if [ -z "$1" ]; then
		echo "ssd: missing arguments" 1>&2
		return 1
	fi
	ssd="$ssd -x $1"
	if [ -n "$SERVICE_PID_FILE$SERVICE_USE_PID$SERVICE_WRITE_PID" ]; then
		ssd="$ssd -p ${SERVICE_PID_FILE:-/var/run/${1##*/}.pid}"
	fi
	ssd="$ssd${SERVICE_UID:+ -c $SERVICE_UID${SERVICE_GID:+:$SERVICE_GID}}"
	if [ -n "$ssd_start" ]; then
		ssd="$ssd${SERVICE_DAEMONIZE:+ -b}${SERVICE_WRITE_PID:+ -m}"
	else
		ssd="$ssd${ssd_sig:+ -s $ssd_sig}"
	fi
	shift
	$ssd${1:+ -- "$@"}
}

service_start() {
	service -S "$@"
}

service_stop() {
	service -K "$@"
}

service_reload() {
	service -R "$@"
}

start() {
	return 0
}

stop() {
	return 0
}

reload() {
	return 1
}

restart() {
	trap '' TERM
	stop "$@"
	start "$@"
}

boot() {
	start "$@"
}

shutdown() {
	stop
}

disable() {
	name="$(basename "${initscript}")"
	rm -f "$IPKG_INSTROOT"/etc/rc.d/S??$name
	rm -f "$IPKG_INSTROOT"/etc/rc.d/K??$name
}

enable() {
	name="$(basename "${initscript}")"
	disable
	[ -n "$START" -o -n "$STOP" ] || {
		echo "/etc/init.d/$name does not have a START or STOP value"
		return 1
	}
	[ "$START" ] && ln -s "../init.d/$name" "$IPKG_INSTROOT/etc/rc.d/S${START}${name##S[0-9][0-9]}"
	[ "$STOP"  ] && ln -s "../init.d/$name" "$IPKG_INSTROOT/etc/rc.d/K${STOP}${name##K[0-9][0-9]}"
}

enabled() {
	name="$(basename "${initscript}")"
	[ -x "$IPKG_INSTROOT/etc/rc.d/S${START}${name##S[0-9][0-9]}" ]
}

depends() {
	return 0
}

help() {
	cat <<EOF
Syntax: $initscript [command]

Available commands:
	start	Start the service
	stop	Stop the service
	restart	Restart the service
	reload	Reload configuration files (or restart if that fails)
	enable	Enable service autostart
	disable	Disable service autostart
$EXTRA_HELP
EOF
}

. "$initscript"

ALL_COMMANDS="start stop reload restart boot shutdown enable disable enabled depends ${EXTRA_COMMANDS}"
list_contains ALL_COMMANDS "$action" || action=help
[ "$action" = "reload" ] && action='eval reload "$@" || restart "$@" && :'
$action "$@"