modules/admin-core: add service control module for interfacing with luci-reload

modules/admin-core/luasrc/controller/admin/servicectl.lua

@@ -0,0 +1,61 @@
+--[[
+LuCI - Lua Configuration Interface
+
+Copyright 2010 Jo-Philipp Wich <xm@subsignal.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+$Id$
+]]--
+
+module("luci.controller.admin.servicectl", package.seeall)
+
+function index()
+	luci.i18n.loadc("base")
+	local i18n = luci.i18n.translate
+
+	entry({"servicectl"}, alias("servicectl", "status"), "", 1).sysauth = "root"
+	entry({"servicectl", "status"}, call("action_status"), "", 2).leaf = true
+	entry({"servicectl", "restart"}, call("action_restart"), "", 3).leaf = true
+end
+
+function action_status()
+	local data = nixio.fs.readfile("/var/run/luci-reload-status")
+	if data then
+		luci.http.write("/etc/config/")
+		luci.http.write(data)
+	else
+		luci.http.write("finish")
+	end
+end
+
+function action_restart()
+	if luci.dispatcher.context.requestpath[3] then
+		local service
+		local services = { }
+
+		for service in luci.dispatcher.context.requestpath[3]:gmatch("%w+") do
+			services[#services+1] = service
+		end
+
+		if nixio.fork() == 0 then
+			local i = nixio.open("/dev/null", "r")
+			local o = nixio.open("/dev/null", "w")
+
+			nixio.dup(i, nixio.stdin)
+			nixio.dup(o, nixio.stdout)
+
+			i:close()
+			o:close()
+
+			nixio.exec("/bin/sh", "/sbin/luci-reload", unpack(services))
+		else
+			luci.http.write("OK")
+			os.exit(0)
+		end
+	end
+end