On Tue, Apr 10, 2001 at 03:11:05AM -0700, Dawson Engler wrote:
> As a side question: is it still true that verify_area's must be done before
> any use of __put_user/__get_user/__copy_from_user/etc?
I believe so, at least in generic code.
In architecture specific code (non-i386) it is usually sufficient just to do
one put_user/get_user/copy_from_user and then do the rest of
__put_user/__get_user etc. from nearby area (<4K is safe e.g. on sparc) and
some architectures don't care at all, because verify_area is a noop
(sparc64).
Jakub
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This archive was generated by hypermail 2b29 : Sun Apr 15 2001 - 21:00:12 EST