Re: Validating Pointers

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 26 Jul 2001 16:52:48 +0100 (BST)

> Is there a general (correct) kernel subroutine to validate a pointer
> received in a routine as input from the outside world? Is access_ok() a
> good one to use?

access_ok may do minimal checks, or no checking at all. The only point at
which you can validate a user point is when you use copy*user and
get/put_user to access the data.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/