linux-kernel - Re: ndiswrapper and GPL-only symbols redux

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Message-ID:  <yw1xsl0f3d88.fsf@mansr.com>
Date:	Wed, 30 Jan 2008 08:54:31 +0000
From:	Måns Rullgård <mans@...sr.com>
To:	linux-kernel@...r.kernel.org
Subject:  Re: ndiswrapper and GPL-only symbols redux

Geert Uytterhoeven <geert@...ux-m68k.org> writes:

> On Tue, 29 Jan 2008, Zan Lynx wrote:
>> Jon Masters wrote:
>> > I wouldn't quite say that. I wasn't going to comment, but...personally,
>> > I actually disagree with the assertions that ndiswrapper isn't causing
>> > proprietary code to link against GPL functions in the kernel (how is
>> > an NDIS implementation any different than a shim layer provided to
>> > load a graphics driver?), but I wasn't trying to make that point.
>> 
>> Well, as long as *any* part of the kernel ever links to proprietary
>> code, then GPL functions link to it in exactly the same way
>> ndiswrapper enables.  It's only a matter of how many steps of
>> separation.
>> 
>> A perfectly GPL USB network driver linked to GPL-only functions
>> feeds data into the kernel where it swirls about and emerges from a
>> proprietary network filesystem driver, for example.
>
> A proprietary network filesystem driver _on a different system_, you
> mean? In this case the proprietary code has no direct access to your
> kernel data, except through the communication protocol. No tainting is
> involved, as all corruption in your kernel is caused by kernel bugs in
> visible code that can be debugged.

Untrusted code doesn't necessarily violate the GPL.  The two issues
are orthogonal.

-- 
Måns Rullgård
mans@...sr.com

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