Re: strict copy_from_user checks issues?

[H. Peter Anvin]

On 01/09/2010 12:01 AM, Arnd Bergmann wrote:
> 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

Structures, as in "struct"?  That would seem to be a good idea.  Arrays,
which can be dynamically sized, are trickier.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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