Date: Tue, 21 Sep 2004 17:58:39 +0700 From: Alexey Dokuchaev <danfe@nsu.ru> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: arch@freebsd.org Subject: Re: [HEADSUP] naming of tty devices. Message-ID: <20040921105839.GA82522@regency.nsu.ru> In-Reply-To: <42228.1095763864@critter.freebsd.dk> References: <20040921104246.GA75823@regency.nsu.ru> <42228.1095763864@critter.freebsd.dk>
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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
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