Date: Sun, 9 Oct 2005 02:21:30 +0200
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
To: akpm@osdl.org, Alan Cox <alan@lxorguk.ukuu.org.uk>,
       linux-kernel@vger.kernel.org
Cc: linux-serial@vger.kernel.org
Subject: Re: [patch 3/4] new serial flow control
Message-ID: <20051009002129.GJ5150@bouh.residence.ens-lyon.fr>
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Russell King, le Sun 09 Oct 2005 01:01:53 +0100, a ?crit :
> > How could this look like in userspace?
> 
> I think they should be termios settings - existing programs know how
> to handle termios to get what they want. 

Hence a new field in the termios structure?

There was a discussion about this back in 2000:

http://marc.theaimsgroup.com/?t=96514848800003&r=1&w=2

and more precisely a remind of SVR4's termiox structure with an added
x_hflag:

http://marc.theaimsgroup.com/?l=linux-kernel&m=96523146720678&w=2

I'm not sure about how we'd want to implement that. The SVR4 approach
(orthogonal input/output flow control selection) doesn't seem right to
me: there are really peculiar flow controls that involve both ways. A
mere enumeration of possible methods might be better.

Regards,
Samuel
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