linux-kernel - Re: [PATCH v3 3/3] selinux: add permission names to trace event

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Message-ID: <CAEjxPJ7k648nQxCDzcHc0h1vEfNhAJShG5iKmD52nuO5s9phsQ@mail.gmail.com>
Date:   Tue, 18 Aug 2020 08:13:53 -0400
From:   Stephen Smalley <stephen.smalley.work@...il.com>
To:     peter enderborg <peter.enderborg@...y.com>
Cc:     Thiébaud Weksteen <tweek@...gle.com>,
        Paul Moore <paul@...l-moore.com>,
        Nick Kralevich <nnk@...gle.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Eric Paris <eparis@...isplace.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        SElinux list <selinux@...r.kernel.org>
Subject: Re: [PATCH v3 3/3] selinux: add permission names to trace event

On Tue, Aug 18, 2020 at 4:11 AM peter enderborg
<peter.enderborg@...y.com> wrote:
>
> On 8/17/20 10:16 PM, Stephen Smalley wrote:
> > On 8/17/20 1:07 PM, Thiébaud Weksteen wrote:
> >
> >> From: Peter Enderborg <peter.enderborg@...y.com>
> >>
> >> In the print out add permissions, it will look like:
> >>      <...>-1042  [007] ....   201.965142: selinux_audited:
> >>      requested=0x4000000 denied=0x4000000 audited=0x4000000
> >>      result=-13
> >>      scontext=system_u:system_r:cupsd_t:s0-s0:c0.c1023
> >>      tcontext=system_u:object_r:bin_t:s0
> >>      tclass=file permissions={ !entrypoint }
> >>
> >> This patch is adding the "permissions={ !entrypoint }".
> >> The permissions preceded by "!" have been denied and the permissions
> >> without have been accepted.
> >>
> >> Note that permission filtering is done on the audited, denied or
> >> requested attributes.
> >>
> >> Suggested-by: Steven Rostedt <rostedt@...dmis.org>
> >> Suggested-by: Stephen Smalley <stephen.smalley.work@...il.com>
> >> Reviewed-by: Thiébaud Weksteen <tweek@...gle.com>
> >> Signed-off-by: Peter Enderborg <peter.enderborg@...y.com>
> >> ---
> >>   include/trace/events/avc.h | 11 +++++++++--
> >>   security/selinux/avc.c     | 36 ++++++++++++++++++++++++++++++++++++
> >>   2 files changed, 45 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/security/selinux/avc.c b/security/selinux/avc.c
> >> index 7de5cc5169af..d585b68c2a50 100644
> >> --- a/security/selinux/avc.c
> >> +++ b/security/selinux/avc.c
> >> @@ -695,6 +695,7 @@ static void avc_audit_pre_callback(struct audit_buffer *ab, void *a)
> >>       audit_log_format(ab, " } for ");
> >>   }
> >>   +
> >>   /**
> >>    * avc_audit_post_callback - SELinux specific information
> >>    * will be called by generic audit code
> >
> > Also, drop the spurious whitespace change above.
> >
> >
> Is there any other things we need to fix? A part 1&2 now OK?

They looked ok to me, but Paul should review them.