linux-kernel - Re: [RFC][PATCH 1/3] evm: Move hooks outside LSM infrastructure

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Message-ID: <1588799408.4624.28.camel@linux.ibm.com>
Date:   Wed, 06 May 2020 17:10:08 -0400
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     Roberto Sassu <roberto.sassu@...wei.com>, david.safford@...il.com,
        viro@...iv.linux.org.uk, jmorris@...ei.org,
        John Johansen <john.johansen@...onical.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, silviu.vlasceanu@...wei.com
Subject: Re: [RFC][PATCH 1/3] evm: Move hooks outside LSM infrastructure

On Wed, 2020-05-06 at 15:44 -0400, Mimi Zohar wrote:
> Since copying the EVM HMAC or original signature isn't applicable, I
> would prefer exploring an EVM portable and immutable signature only
> solution.

To prevent copying the EVM xattr, we added "security.evm" to
/etc/xattr.conf.  To support copying just the EVM portable and
immutable signatures will require a different solution.

Mimi