linux-kernel - Re: EXPORT_SYMBOL_GPL recursive for shim and/or wrappers

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Message-ID: <20090601223215.7a81c875@lxorguk.ukuu.org.uk>
Date:	Mon, 1 Jun 2009 22:32:15 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"Luis R. Rodriguez" <mcgrof@...il.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Greg KH <greg@...ah.com>, Al Viro <viro@....linux.org.uk>,
	Pavel Roskin <proski@....org>, Aaditya.Rai@...eros.com,
	Prem.Kumar@...eros.com, Stephen.Chen@...eros.com,
	Rahul.Sridhar@...eros.com, Allen.Tsai@...eros.com
Subject: Re: EXPORT_SYMBOL_GPL recursive for shim and/or wrappers

On Mon, 1 Jun 2009 12:41:58 -0700
"Luis R. Rodriguez" <mcgrof@...il.com> wrote:

> The intention behind EXPORT_SYMBOL_GPL seems clear to me -- prevent
> proprietary drivers from using GPL-only symbols. 

It's a guide as to what symbols are most definitely internal interfaces.
Nobody but a lawyer (or more accurately a court of law I guess) can tell
you what is or isn't a derivative work. It can be that without using _GPL
symbols, and I would imagine there may even be cases the reverse might be
true.
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