Re: strict copy_from_user checks issues?
From: H. Peter Anvin
Date: Sat Jan 09 2010 - 16:02:40 EST
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.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/