From: Brian Gerst <bgerst@didntduck.org>
To: Bernhard Ager <ager@in.tum.de>
Cc: vojtech@suse.cz, linux-joystick@atrey.karlin.mff.cuni.cz,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Joystick on amd64 for 32bit programs
Date: Wed, 14 Sep 2005 08:53:14 -0400 [thread overview]
Message-ID: <43281D3A.9080407@didntduck.org> (raw)
In-Reply-To: <20050914100244.GC9770@in.tum.de>
Bernhard Ager wrote:
> Hi,
>
> the patch below makes the joystick on amd64 work for 32bit
> applications. It was successfully tested by myself with X-Plane [1],
> SilentWings [2], Quake 3 [3] and quite some other applications.
>
> How it works: as the parameters in 32bit userspace ioctl are
> compatible with the 64bit kernel, it is sufficient to declare them
> compatible in ia32_ioctl.c. The JSIOCGNAME ioctl causes a problem as
> it encodes the length of the return buffer into the ioctl number. This
> is solved by mapping all of the JSIOCGNAME ioctls to JSIOCGNAME(0).
>
> Patch is below and works for vanilla kernels at least up to
> 2.6.13.
This patch uses the obsolete method of defining compat ioctls. The
joydev ioctls are already fixed (using ->compat_ioctl) in more recent
kernels.
--
Brian Gerst
prev parent reply other threads:[~2005-09-14 12:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-14 10:02 [PATCH] Joystick on amd64 for 32bit programs Bernhard Ager
2005-09-14 12:53 ` Brian Gerst [this message]
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