linux-kernel - Re: strict copy_from

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Message-Id: <201001090901.37208.arnd@arndb.de>
Date:	Sat, 9 Jan 2010 09:01:36 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: strict copy_from_user checks issues?

On Saturday 09 January 2010, H. Peter Anvin wrote:
> >       return put_user(data, uptr);
> > 
> > The latter form requires a macro instead of a function for the user copy,
> > but we now have that anyway because of the size check.
> > 
> 
> Well... we already have the latter form?

Right, but my suggestion was to extend that do data structures in
addition to the scalars we are supporting now.

	Arnd
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