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From:   David Howells <dhowells@redhat.com>
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To:     Andy Lutomirski <luto@amacapital.net>
Cc:     dhowells@redhat.com, viro@zeniv.linux.org.uk,
        Casey Schaufler <casey@schaufler-ca.com>, raven@themaw.net,
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        linux-block@vger.kernel.org, keyrings@vger.kernel.org,
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Subject: Re: [PATCH 01/10] security: Override creds in __fput() with last fputter's creds [ver #3]
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Date:   Thu, 06 Jun 2019 16:06:14 +0100
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Andy Lutomirski <luto@amacapital.net> wrote:

> > So that the LSM can see the credentials of the last process to do an fput()
> > on a file object when the file object is being dismantled, do the following
> > steps:
> > 
> 
> I still maintain that this is a giant design error.

Yes, I know.  This was primarily a post so that Greg could play with the USB
notifications stuff I added.  The LSM support isn't resolved and is unchanged.

> Can someone at least come up with a single valid use case that isn't
> entirely full of bugs?

"Entirely full of bugs"?

How would you propose I deal with Casey's requirement?  I'm getting the
feeling you're going to nak it if I try to fulfil that and he's going to nak
it if I don't.

David