socket descriptor returned from socket()

[Vlad GALU]

On 2/6/07, Andrew N. Below <defan at zenon.net> wrote:
> Hello.
>
> Could 0 (zero) be a valid socket descriptor?

    Yes, if your program is a daemon and closes fds 0, 1, 2 which
corespond to stdin, stdout and stderr.

> man 2 socket:
>
> RETURN VALUES
>       A -1 is returned if an error occurs, otherwise the return value is a
>       descriptor referencing the socket.
>
> I have some troubles with xinetd (2.3.14) - first service
> in config file with proto=tcp, socket_type=stream and wait=yes
> fail to start (fcntl returns "Bad file descriptor" error).
>
> --
> Andrew N. Below
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