Re: no ioctls for serial ports? [was Re: LANANA: To Pending DeviceNum

Abramo Bagnara (abramo@alsa-project.org)
Sun, 20 May 2001 16:30:49 +0200


Alexander Viro wrote:
>
> On 20 May 2001, Kai Henningsen wrote:
>
> > I've seen this question several times in this thread. I haven't seen the
> > obvious answer, though.
> >
> > Have a new system call:
> >
> > ctlfd = open_device_control_fd(fd);
> > If fd is something that doesn't have a control interface (say, it already
> > is a control filehandle), this returns an appropriate error code.
>
> It may have several. Which one?

Can you explain better this?

-- 
Abramo Bagnara                       mailto:abramo@alsa-project.org

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