Re: The problem with TUN/TAP devices

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On Wed, 2009-07-01 at 11:01 -0400, Eric Paris wrote:
> On Wed, Jul 1, 2009 at 9:44 AM, Stephen Smalley<sds@xxxxxxxxxxxxx> wrote:
> > On Tue, 2009-06-30 at 17:34 -0400, Paul Moore wrote:
> 
> > Wouldn't it be a bug if they didn't match?  So I'd add the sk_alloc()
> > hook, set the label/SID for the sock there, and remove the setting of
> > the sock label/SID from post_create.  And then just add a BUG_ON to
> > post_create to assert that the inode SID should be the same as the sock
> > SID and if they don't match something has gone wrong.
> >
> 
> I've got a system all set up to test anything you want/have/need....
> Maybe this afternoon I'll even give this suggestion a try just to see
> what happens, the networking hooks are ummmm, special?

Wait - we already have a sk_alloc_security hook.  And IIRC, we don't set
the SID/label there because that can happen when a new connection sock
is created, and thus outside of process context.

-- 
Stephen Smalley
National Security Agency


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