Re: no ioctls for serial ports? [was Re: LANANA: To Pending DeviceNumber
Abramo Bagnara (email@example.com)
Sun, 20 May 2001 09:18:58 +0200
Alexander Viro wrote:
> On Sat, 19 May 2001, Linus Torvalds wrote:
> > What you're really proposing is to make ioctl's be ASCII strings.
> > Which is not necessarily a bad idea, and I think plan9 did something
> > similar (or rather, if I remember correctly, plan9 has control streams
> > that were ASCII. Or am I confused?).
> You are not. Control streams in question look like normal files. Normally
> driver exports a tree with several data files (e.g. fd0, fd1, fd2, fd3)
> and several control files (e.g. fd0ctl, fd1ctl, fd2ctl, fd3ctl). write()
> to the latter passes commands. No extra syscalls needed.
I've just had a "so simple to risk to be stupid" idea.
To have /proc/self/fd/N/ioctl would not have the potential to suppress
ioctl needs for *all* current uses?
Abramo Bagnara mailto:firstname.lastname@example.org
Opera Unica Phone: +39.546.656023
Via Emilia Interna, 140
48014 Castel Bolognese (RA) - Italy
ALSA project http://www.alsa-project.org
It sounds good!
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to email@example.com
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/