Should be able to pass additional FDs

[akamensky]

Right now there is not way to get additional FDs to be passed from parent to daemon.

My goal is to open TCP socket, then get FD (using TCPListener.File()), then pass that FD to the daemon and convert it back to Listener (using net.FileListener())

I think this should be totally doable and not hard to implement, so I don't see why it was not there from the start. There are more uses to this functionality than just this.

[sherlockblaze]

@akamensky Hey man, did you get a implement now? I want the feature you mentioned too

[akamensky]

@sherlockblaze Nope, to get that working I would need to rewrite large part of this package.

[sherlockblaze]

@akamensky I think I got it already.
When you use the lib to start a daemon thread, you should set Args for it.

cntxt := &daemon.Context{
		PidFileName: "pid",
		PidFilePerm: 0644,
		LogFileName: "log",
		LogFilePerm: 0640,
		WorkDir:     "./",
		Umask:       027,
		Args:        []string{"[go-daemon sample]", "test"},
	}

And the Args just like the command line you use. Like nginx start, arg[0] is ngxin and arg[1] is start and like. So, you just need to set the args with your command by using a golang slice, you can achieve your goal.

[akamensky]

@sherlockblaze command line arguments have nothing to do with file descriptors...

[sherlockblaze]

@akamensky sorry man, I misunderstood your purpose