From owner-freebsd-arch@FreeBSD.ORG  Tue Sep 21 10:58:33 2004
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 493A416A4CE
	for <arch@freebsd.org>; Tue, 21 Sep 2004 10:58:33 +0000 (GMT)
Received: from mx.nsu.ru (mx.nsu.ru [212.192.164.5])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 6B07B43D58
	for <arch@freebsd.org>; Tue, 21 Sep 2004 10:58:32 +0000 (GMT)
	(envelope-from danfe@regency.nsu.ru)
Received: from regency.nsu.ru ([193.124.210.26])
	by mx.nsu.ru with esmtp (Exim 4.34)
	id 1C9idx-0002Se-UO; Tue, 21 Sep 2004 18:17:09 +0700
Received: from regency.nsu.ru (localhost [127.0.0.1])
	by regency.nsu.ru (8.12.10/8.12.10) with ESMTP id i8LAwfoI083254;
	Tue, 21 Sep 2004 17:58:41 +0700 (NOVST)
	(envelope-from danfe@regency.nsu.ru)
Received: (from danfe@localhost)
	by regency.nsu.ru (8.12.10/8.12.10/Submit) id i8LAwdQ6083215;
	Tue, 21 Sep 2004 17:58:39 +0700 (NOVST)
	(envelope-from danfe)
Date: Tue, 21 Sep 2004 17:58:39 +0700
From: Alexey Dokuchaev <danfe@nsu.ru>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
Message-ID: <20040921105839.GA82522@regency.nsu.ru>
References: <20040921104246.GA75823@regency.nsu.ru>
	<42228.1095763864@critter.freebsd.dk>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <42228.1095763864@critter.freebsd.dk>
User-Agent: Mutt/1.4.2.1i
cc: arch@freebsd.org
Subject: Re: [HEADSUP] naming of tty devices.
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussion related to FreeBSD architecture
	<freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 21 Sep 2004 10:58:33 -0000

On Tue, Sep 21, 2004 at 12:51:04PM +0200, Poul-Henning Kamp wrote:
> In message <20040921104246.GA75823@regency.nsu.ru>, Alexey Dokuchaev writes:
> >On Mon, Sep 20, 2004 at 09:38:45AM +0200, Poul-Henning Kamp wrote:
> >> 
> >> My suggestion is the following:
> >> 
> >> 	All drivers will offer "tty${something}" devices, and
> >> 	generally ${something} will consist of a letter followed
> >> 	by a number, possibly in base 36 ([0-9a-z]).
> >> 
> >> 	All drivers which attach to external equipment via a serial
> >> 	connector should also offer "cua${thesamething}".  "Embedded"
> >> 	serial ports, pseudo drivers etc, do not have to offer the
> >> 	"cua" if DCD state on open is not an issue.
> >> 
> >> 	The init and lock devices will be called ${base_device}.[init,lock]
> >> 	and they will possibly be provided by on-demand devices so that
> >> 	they do not clutter up /dev.
> >
> >What about contracting `.init|lock' to just `i|l', like we have with all
> >(most) other device names out there (i.e., acd0t0, not acd0track0) -- long
> >device names is a thing to avoid, IMHO.
> 
> The problem with just a 'i' or 'l' is that it creates confusion as to
> what is the device name and what is the extension.  I like the concept
> of a big fat '.' in there to tell the extension apart.  Shortening the
> extension from "init" to "i" and "lock" to "l" would be confusing at
> best, and of little real saving in practice.
> 
> My plan is for the ".init" and ".lock" devices to be "on-demand", in
> other words, they won't show up until first time you try to access them.

Sounds fair enough.

Thanks!

./danfe