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Message-ID: <20080829003257.531cc77a@lxorguk.ukuu.org.uk>
Date:	Fri, 29 Aug 2008 00:32:57 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"H. Peter Anvin" <hpa@...nel.org>
Cc:	Greg KH <greg@...ah.com>, Adrian Bunk <bunk@...nel.org>,
	Tejun Heo <tj@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Miklos Szeredi <miklos@...redi.hu>,
	Takashi Iwai <tiwai@...e.de>, fuse-devel@...ts.sourceforge.net
Subject: Re: [ANNOUNCE] OSS Proxy using CUSE


> serial ports as ptys+userspace a much more capable replacement.  It's 
> not trivial, though, because the interpretation of the BREAK has to be 
> done when received, not when sent, which means supporting a 257th value 
> in the underlying buffer setup.

That bit of the problem is trivial. Its the rest of the behavioural
differences that are more of a nightmare - parity, flow control
differences, modem line emulation, being able to hook into things like
ldisc change/termios change.

Break is about a half hour job.

Alan
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