openwrt/package/network/services/umdns/files/umdns.init

#!/bin/sh /etc/rc.common
# Copyright (c) 2014 OpenWrt.org

START=80

USE_PROCD=1
PROG=/usr/sbin/umdns
IFACES=""

load_ifaces() {
	local network="$(uci get umdns.@umdns[-1].network)"
	for n in $network; do
		local device
		json_load "$(ifstatus $n)"
		json_get_var device l3_device
		echo -n "$device "
	done
}

reload_service() {
	json_init
	json_add_array interfaces
	for i in $(load_ifaces); do
		json_add_string "" "$i"
	done
	json_close_array

	ubus call umdns set_config "$(json_dump)"
}

start_service() {
	local network="$(uci get umdns.@umdns[-1].network)"

	procd_open_instance
	procd_set_param command "$PROG"
	procd_set_param seccomp /etc/seccomp/umdns.json
	procd_set_param respawn
	procd_open_trigger
	procd_add_config_trigger "config.change" "umdns" /etc/init.d/umdns reload
	for n in $network; do
		procd_add_interface_trigger "interface.*" $n /etc/init.d/umdns reload
	done
	procd_add_raw_trigger "instance.update" 5000 "/bin/ubus" "call" "umdns" "reload"
	procd_close_trigger
	[ "$(uci get umdns.@umdns[-1].jail)" = 1 ] && procd_add_jail umdns ubus log
	procd_close_instance
}

service_started() {
	ubus -t 10 wait_for umdns
	[ $? = 0 ] && reload_service
}