查找谁发送了给定信号

I handle signals with a goroutine

func main() {
    csignals := make(chan os.Signal, 1)
    signal.Notify(csignals)

    go func() {
        for {
            sig := <-csignals
            logger.Println("logger signal reçu: ", sig)
        }
    }()

    ...
}

However, I would like to find which process sent this signal. How could I do that?