Mail Archives: cygwin-developers/2002/08/26/10:48:30
On Tue, Aug 27, 2002 at 12:38:09AM +1000, Robert Collins wrote:
> On Tue, 2002-08-27 at 00:29, Corinna Vinschen wrote:
> > On Mon, Aug 26, 2002 at 03:20:00PM +0100, Conrad Scott wrote:
> > > "Christopher Faylor" <cgf AT redhat DOT com> wrote:
> > > > There shouldn't really be that much overhead to the current
> > > method for
> > > > handling text/binary reads, though. It's just checking a bit
> > > field.
> > >
> > > At the coal-face it ends up being a bit more messy than that. For
> > > example, the fhandler::read code checks the readahead buffers for
> > > pending data but they will always be empty in binary-mode (AFAIK)
> > > . In fact there's a page of code before the check for whether a
> > > binary read is being done and only then does the code escape back
> > > to the caller. Since (AFAIK) you can't change the text/binary
> > > mode of an fd once it's been opened (and thus the readahead
> >
> > You can. setmode(fd, O_TEXT); or setmode(fd, O_BINARY);
>
> Which is why I was suggesting stripping O_TEXT capability for raw FD's,
> and making the TEXT translation only ever apply to the FILE * calls -
> fprintf, fscanf, fread etc...
>
> It allows all the fd level code to be much much simpler.
Sure, I *love* the idea, but it would break applications, e. g. ash,
which opens input files on descriptor level.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin AT cygwin DOT com
Red Hat, Inc.
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