Thread (12 messages) 12 messages, 4 authors, 2009-01-16

Re: Re (hello?): [PATCH] Let keyboard notifiers modify key codes

From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: 2009-01-12 22:56:06
Also in: lkml

Derek Fawcus, le Mon 12 Jan 2009 22:36:21 +0000, a écrit :
On Fri, Jan 09, 2009 at 11:23:41PM +0100, Samuel Thibault wrote:
quoted
Alan Cox, le Fri 09 Jan 2009 22:01:44 +0000, a écrit :
quoted
quoted
quoted
Surely that is just a new keymap ?
No. That would mean a lot of keymapSSS. Doing it the keymap way
Why - its an  algorithmic question about how to edit them - remember you
can edit keymaps in programs at runtime and live.
Right. I'm still afraid by that: we'd need to know how to remap the
various keycodes (amiga, atari, i386, mc, sun).
Err - just use EVIOCSKEYCODE to swap the keycodes around,  this works
in terms of the evdev keycodes.  I use it in a small program to swap
around a bunch of keys.

A bit more of a challange would be listening to evdev,  and when
detecting the 'swap' keycode,  doing the reload with the actual swaps.
Yes, that seems a bit unsafe to me.  Another solution is to just grab
all the keyboard devices, and reemit the wanted evdev keycodes.  Quite
clumsy.
I'm not sure w/o reading the code if the kernel will allow this to be
shared between the tty and evdev on the same vt,
What do you mean by "this"?  The raw keycode -> input keycode
translation?  My guess is that it is recorded for the device itself, not
related to things like VTs, and thus is global.
but then one could run a controller program talking through a pty and
direct to the keyboard.
Ugh.  I'd prefer grabing evdev rather that using a pty.

Samuel
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