On Thu, May 06, 2010 at 02:48:32PM +0200, Joerg Sonnenberger wrote:
> On Thu, May 06, 2010 at 08:51:29AM +0000, David Holland wrote:
> > On Thu, May 06, 2010 at 08:14:08AM +0000, Jukka Ruohonen wrote:
> > > Correct the discussion about return values: fileno() may fail and return
> > -1.
> > > Note that in such cases the NetBSD implementation does not set errno to
> > > EBADF, hence diverging from the standard in this small detail.
> >
> > How is that not just a bug?
>
> -1 is a valid answer for not file-backed FILEs. I don't think it is an
> error.
RETURN VALUE
Upon successful completion, fileno() shall return the integer value of
the file descriptor associated with stream. Otherwise, the value -1 shall be
returned and errno set to indicate the error.
ERRORS
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?
- Jukka.
