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Date:      Fri, 17 Jun 2011 20:18:03 -0400
From:      Ben Kaduk <minimarmot@gmail.com>
To:        Ed Schouten <ed@80386.nl>
Cc:        Kostik Belousov <kostikbel@gmail.com>, Anonymous <swell.k@gmail.com>, freebsd-current@freebsd.org
Subject:   Re: [Patch] [regression] libvgl and r197330 (kbd)
Message-ID:  <BANLkTi=A1DEJf-jpiuWrrUV=PkTPcAG56w@mail.gmail.com>
In-Reply-To: <20090925123911.GP95398@hoeg.nl>
References:  <200909191756.n8JHuQCq031719@svn.freebsd.org> <86zl8jften.fsf@gmail.com> <20090925062134.GN95398@hoeg.nl> <20090925105729.GT47688@deviant.kiev.zoral.com.ua> <20090925123911.GP95398@hoeg.nl>

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On Fri, Sep 25, 2009 at 8:39 AM, Ed Schouten <ed@80386.nl> wrote:
> Hi all,
>
> * Kostik Belousov <kostikbel@gmail.com> wrote:
>> > Ah, it seems SDL also calls GIO_KEYMAP. Just rebuilding SDL should fix
>> > this. I promised to add a message to UPDATING as well, so I'll also
>> > mention SDL should be rebuilt as well.
>>
>> I consider this as a very strong argument to keep the existing ioctl
>> as is, and provide new ioctl that takes new table.
>
> I've attached a patch that should restore binary compatibility. I first
> thought this wasn't really needed, because most applications would use
> K_RAW instead of K_XLATE anyway.
>
> Just breaking binary compatibility with kbdcontrol(1) wouldn't have been
> too bad, but it turns out things like SDL use this as well. I've
> attached a patch that should restore binary compatibility. Anyone
> interested in testing this before I commit it to SVN?

Replying to ancient history, it looks like this patch never got
committed?  The Debian kFreeBSD folks have run into a similar issue:
http://lists.debian.org/debian-bsd/2011/06/msg00238.html
proposing
===============
Upstream could do it properly, without ABI breaking, i.e. by

#define GIO_KEYMAP_OLD   _IOR('k', 6, keymap_t)
#define PIO_KEYMAP_OLD   _IOW('k', 7, keymap_t)
...
#define GIO_KEYMAP       _IO('k', 16)
#define PIO_KEYMAP       _IO('k', 17)
===============

Something to keep the ABI between 8 and 9 is probably still useful,
even at this juncture.

-Ben Kaduk



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