Re: CVS commit: src/lib/libc/stdio

[christos%astron.com@localhost (Christos Zoulas)]

In article <20100507063258.GA23121%apb-laptoy.apb.alt.za@localhost>,
Alan Barrett  <apb%cequrux.com@localhost> wrote:
>On Thu, 06 May 2010, Christos Zoulas wrote:
>> >    The fileno() function may fail if:
>> >
>> >    [EBADF]
>> >        The stream argument is not a valid stream, or the stream is not
>> >    associated with a file.
>> >
>> >Isn't the above EBADF exactly what you are after?
>> 
>> Our stdio supports funopen() which has FILE *'s where fileno() == -1, but
>> they work just fine... This should be documented. Perhaps set errno if
>> it is indeed a bad file descriptor, and don't set it if it is a side-effect
>> of funopen()?
>
>It seems to me that funopen() creates a stream that is not associated
>with a file descriptor.  I assume that's what POSIX meant by "... not
>associated with a file".  So, I think that EBADF would be a reasonable
>response.
>
>Returning -1 without setting errno seems very wrong.  Seting errno
>to some value that we think is more appropriate than EBADF would
>probably be OK.

ENOTTY ;-)
EOPNOTSUPP

christos