linux-kernel - Re: [PATCH v35 26/29] Audit: Add record for multiple task security contexts

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Message-ID: <CAHC9VhSaUHp=zGtU-yQ++uayfaLig_airHVo_8WcvPVZO2MemQ@mail.gmail.com>
Date:   Fri, 22 Apr 2022 12:28:40 -0400
From:   Paul Moore <paul@...l-moore.com>
To:     Casey Schaufler <casey@...aufler-ca.com>
Cc:     casey.schaufler@...el.com, jmorris@...ei.org,
        linux-security-module@...r.kernel.org, selinux@...r.kernel.org,
        linux-audit@...hat.com, keescook@...omium.org,
        john.johansen@...onical.com, penguin-kernel@...ove.sakura.ne.jp,
        stephen.smalley.work@...il.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v35 26/29] Audit: Add record for multiple task security contexts

On Mon, Apr 18, 2022 at 11:12 AM Casey Schaufler <casey@...aufler-ca.com> wrote:
>
> Create a new audit record AUDIT_MAC_TASK_CONTEXTS.
> An example of the MAC_TASK_CONTEXTS (1420) record is:
>
>     type=MAC_TASK_CONTEXTS[1420]
>     msg=audit(1600880931.832:113)
>     subj_apparmor=unconfined
>     subj_smack=_
>
> When an audit event includes a AUDIT_MAC_TASK_CONTEXTS record
> the "subj=" field in other records in the event will be "subj=?".
> An AUDIT_MAC_TASK_CONTEXTS record is supplied when the system has
> multiple security modules that may make access decisions based
> on a subject security context.
>
> Functions are created to manage the skb list in the audit_buffer.
>
> Signed-off-by: Casey Schaufler <casey@...aufler-ca.com>
> ---
>  include/uapi/linux/audit.h |  1 +
>  kernel/audit.c             | 93 +++++++++++++++++++++++++++++++++++---
>  2 files changed, 88 insertions(+), 6 deletions(-)

The audit_buffer_aux_new() and audit_buffer_aux_end() belong in patch
25/29, but otherwise this looks okay.

Acked-by: Paul Moore <paul@...l-moore.com>

-- 
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