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From: Chuck Lever <chuck.lever@oracle.com>
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Subject: EVM HMAC and FS UUID
Message-Id: <04B6BFF9-AC1E-4E46-810B-7DDE5ED63345@oracle.com>
Date: Tue, 22 May 2018 08:53:34 -0700
Cc: Linux NFS Mailing List <linux-nfs@vger.kernel.org>
To: trond.myklebust@hammerspace.com,
        Bruce Fields <bfields@fieldses.org>
Sender: linux-nfs-owner@vger.kernel.org
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Hi-

I'm continuing to look at NFS support for the Linux Integrity
Measurement Architecture.

When computing an HMAC hash of file attributes, sometimes the
FS UUID is included. For a client to verify that hash, the
server will have to expose that UUID somehow.

Is there currently an NFSv4 attribute that carries the FS UUID?


--
Chuck Lever