Method returnPrebound

controlplane/worker_mgr.go:276–280

(ps *preboundSocket)

	// Workers can still LISTEN on inherited FDs, but the CP can't CONNECT
	// because the Unix socket paths don't exist on disk.
	if _, err := os.Stat(ps.socketPath); err != nil {
		slog.Warn("Pre-bound socket file disappeared, discarding all pre-bound sockets.", "path", ps.socketPath, "error", err)
		_ = ps.listener.Close()
		p.closeAllPrebound() // if one is gone, all are gone (same mount)
		return nil
	}
	return ps
}