Re: watch structure
On Tue, 2005-04-05 at 11:10 -0400, Steve Grubb wrote:
On Tuesday 05 April 2005 11:00, Casey Schaufler wrote:
> But you don't know how much to copy.
Sure you do. The lengths are in 2 other fields of the same structure. When
using this scheme, you have to verify the length of the netlink packet meshes
with the lengths provided or reject it. This technique does increase the
amount of checking before using the data.
Shrug. In any event, this is not a performance-critical path, right?
So it doesn't really matter either way, as long as the kernel internal
representation of watches (not necessarily the same as the kernel-
userspace interface) is memory efficient.
Question: Would it be sane for Tim to go ahead and re-base his patch to
the latest -mm and submit his RFC on linux-fsdevel now even before
resolving the userspace interface issue? Or do we need to get the
userspace interface finalized first?
--
Stephen Smalley <sds(a)tycho.nsa.gov>
National Security Agency