On Thu, May 06, 2010 at 06:00:45PM +0300, Jukka Ruohonen wrote: > 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?
I don't mind if it sets errno, but I am not sure if POSIX makes a lot of sense here. But that's just me. Joerg
