linux-kernel - Re: [PATCH v11 0/4] evm: Do HMAC of multiple per LSM xattrs for new inodes

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Message-ID: <dca634f0-ca7d-1876-0702-6ecc194ac47d@huaweicloud.com>
Date:   Sat, 10 Jun 2023 10:00:57 +0200
From:   Roberto Sassu <roberto.sassu@...weicloud.com>
To:     Paul Moore <paul@...l-moore.com>
Cc:     zohar@...ux.ibm.com, dmitry.kasatkin@...il.com, jmorris@...ei.org,
        serge@...lyn.com, stephen.smalley.work@...il.com,
        eparis@...isplace.org, casey@...aufler-ca.com,
        linux-kernel@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org, selinux@...r.kernel.org,
        bpf@...r.kernel.org, kpsingh@...nel.org, keescook@...omium.org,
        nicolas.bouchinet@...p-os.org,
        Roberto Sassu <roberto.sassu@...wei.com>
Subject: Re: [PATCH v11 0/4] evm: Do HMAC of multiple per LSM xattrs for new
 inodes

On 6/9/2023 10:05 PM, Paul Moore wrote:
> On Sat, Jun 3, 2023 at 3:16 PM Roberto Sassu
> <roberto.sassu@...weicloud.com> wrote:
>>
>> From: Roberto Sassu <roberto.sassu@...wei.com>
>>
>> One of the major goals of LSM stacking is to run multiple LSMs side by side
>> without interfering with each other. The ultimate decision will depend on
>> individual LSM decision.
>>
>> Several changes need to be made to the LSM infrastructure to be able to
>> support that. This patch set tackles one of them: gives to each LSM the
>> ability to specify one or multiple xattrs to be set at inode creation
>> time and, at the same time, gives to EVM the ability to access all those
>> xattrs and calculate the HMAC on them ...
> 
> Thanks for sticking with this Roberto, I see a few
> comments/suggestions on this patchset, but overall it is looking
> pretty good; I'm hopeful we will be able to merge the next revision.

Thanks for looking at it.

Just sent v12 with the suggestions. One is addressed with a different 
patch set (Smack transmute fixes).

Roberto