Nonblocking stdin on telnet

[Till Straumann]

Just some background info:

fileno 0 is the file descriptor of the console which is a global
entity like all file descriptors. The telnetd allocates a PTY (which
gets assigned a new, global file descriptor) for your session and
opens FILE streams on the PTY.
Therefore and unlike in a multi-processing unix environment fileno(stdin)
is not necessarily 0 (even w/o any explicit redirection).

- T.

On 07/07/2010 10:57 AM, Andrei Chichak wrote:
> Well that was interesting. What I had almost worked. The difference was:
>
> tcsetattr (STDIN_FILENO, TCSANOW, &newt);
>
> versus
>
>>  int fd = fileno(in);
>>    tcsetattr(fd, TCSANOW, &newt);
>
>
> STDIN_FILENO has a value of 0, whereas fileno(stdin) has a value of 9.
>
> Thanks for all your help,
> Andrei
>
>
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