[GIT PULL] Audit fixes for 3.19 #2

[Al Viro]

On Wed, Dec 31, 2014 at 05:08:12PM -0500, Paul Moore wrote:

> The getname/putname hacks work in the normal file case, but it falls apart 
> when you start talking about AF_UNIX socket files where the filename string 
> doesn't go through the getname/putname refcount tricks.  In the past (no idea 
> how far back this goes off the top of my head) this wasn't an issue since the 
> code which recorded the filenames in the audit records was broken, but since 
> we just "fixed" that problem, the AF_UNIX socket problem is now making an 
> appearance.
> 
> At least that is how it looks to me right now, if I'm wrong about this and I'm 
> missing an obvious fix I'm all ears/eyes/etc.

Umm...  How about just adding a function that would be used instead of
all those
        struct filename filename = { .name = name };
and created an object that would be destroyed later by putname()?