linux-kernel - Re: [PATCH] Input: document the proper usage of EV_KEY and KEY

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070601002435.GA2621@srcf.ucam.org>
Date:	Fri, 1 Jun 2007 01:24:35 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
Cc:	Dmitry Torokhov <dtor@...ightbb.com>,
	Richard Hughes <hughsient@...il.com>,
	linux-acpi@...r.kernel.org, linux-input@...ey.karlin.mff.cuni.cz,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: document the proper usage of EV_KEY and KEY_UNKNOWN

On Thu, May 31, 2007 at 09:13:04PM -0300, Henrique de Moraes Holschuh wrote:

> Well, we already produce KEY_UNKNOWN anyway, and the stuff you quoted above
> just makes KEY_UNKNOWN useful for something instead of keeping it as an
> useless notice to the user that some key (which one? who knows!) was
> pressed.

Given existing userspace, it's never useful to generate KEY_UNKNOWN. 
Adding extra information to the event doesn't alter that.

> Perhaps what you dislike re. KEY_UNKNOWN is the part where KEY_UNKNOWN+scan
> code is declared to be the prefered way to report keys that do not have a
> specific function?  Your reply seems to indicate this, but I am not sure I
> really understood what you meant.

Yes.

> I am not exactly in love with the idea of using KEY_UNKNOWN in place of
> stuff like KEY_FN_F1 either (I'd prefer to just bump up KEY_MAX and have
> more posicional keycodes), but Dmitry is being quite clear that he does not
> want to increase KEY_MAX to add more positional keycodes.

I think using positional keycodes would also be a mistake. We just need 
a slightly larger set of keycodes representing user-definable keys. 
There's 4 of them already - I really can't imagine there being many 
keyboards with a significantly larger set of unlabelled keys.

-- 
Matthew Garrett | mjg59@...f.ucam.org
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/