Re: [patch/rfc] Make poll/select report error (POLLNVAL and EBADF)for unsupported files

[Eric Dumazet]

Le lundi 15 fÃvrier 2010 Ã 18:42 +0100, Eric Dumazet a Ãcrit :

> Hmm, according to POSIX :
> 
> 	The poll() function shall support regular files, terminal and
> pseudo-terminal devices, FIFOs, pipes, sockets ...
> 
> 	Regular files shall always poll TRUE for reading and writing.
> 
> 
> So unless I missed something, this patch could break some conformant
> applications.
> 
> In particular, if an application is polling() on stdin (usually a tty),
> and other 'files', what's happening if we do :
> 
> cat replay_file | application

Doh..

I meant : application < replay_file

> 
> Either it wont read stdin, or application exits without reading its
> input.
> 


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