improved the rc lib, assuming the start function returns a pid

lib/rc.lua

@@ -1,6 +1,7 @@
 local serial = require "serialization"
 
 local rc = {}
+rc.pids = {}
 local service = {}
 local cfg = {}
 cfg.enabled = {}
@@ -37,12 +38,20 @@ end
 function rc.stop(name,...)
  if not service[name] then return false, "service not found" end
  service[name].stop(...)
+ coroutine.yield()
+ if rc.pids[name] then
+  os.kill(rc.pids[name])
+ end
+ rc.pids[name] = nil
 end
 
 function rc.start(name,...)
  rc.load(name)
  if not service[name] then return false, "service not found" end
- return service[name].start(...)
+ local rv = {service[name].start(...)}
+ if type(rv[1]) == "number" then
+  rc.pids[name] = rv[1]
+ end
 end
 
 function rc.restart(name)