Re: Question on verify_area() and friends wrt

[Paulo Andre' (l16083@alunos.uevora.pt)]

Thanks for your quick reply, Cristoph.

One more question arises though...

On Sun, 25 May 2003 13:07:06 +0100
Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:

> verify_area only does some checks so you need to check the return
> value from copy_to_user.  You could switch to __copy_to_user, though.

Why would __copy_to_user be a good choice? AFAIK, __copy_to_user does no
validy checks (as opposed to copy_to_user which does access_ok()) so,
considering verify_area() does only some checks, one could argue that
there's even less checking done if using __copy_to_user. Where am I
interpreting this wrong (as I certainly am) ?

Thanks again,


		Paulo
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