LKML Archive on
 help / color / Atom feed
From: Linda Knippers <>
To: Stephen Smalley <>
Cc:, "Ahmed S. Darwish" <>,
	Andrew Morton <>,
	James Morris <>, Paul Moore <>,
	LKML <>,
	LSM-ML <>,
	Audit-ML <>,
	Steve Grubb <>
Subject: Re: [RFC][PATCH -v2] Smack: Integrate with Audit
Date: Wed, 12 Mar 2008 12:23:29 -0400
Message-ID: <> (raw)
In-Reply-To: <>

Stephen Smalley wrote:
> On Wed, 2008-03-12 at 08:40 -0700, Casey Schaufler wrote:
>> --- Stephen Smalley <> wrote:
>>> On Wed, 2008-03-12 at 04:44 +0200, Ahmed S. Darwish wrote:
>>>> Hi!,
>>>> Setup the new Audit hooks for Smack. The AUDIT_SUBJ_USER and 
>>>> AUDIT_OBJ_USER SELinux flags are recycled to avoid `auditd' 
>>>> userspace modifications. Smack only needs auditing on 
>>>> a subject/object bases, so those flags were enough.
>>> Only question I have is whether audit folks are ok with reuse of the
>>> flags in this manner, and whether the _USER flag is best suited for this
>>> purpose if you are going to reuse an existing flag (since Smack label
>>> seems more like a SELinux type than a SELinux user).
>> To-mate-o toe-maht-o.
>> There really doesn't seem to be any real reason to create a new
>> flag just because the granularity is different. The choice between
>> _USER and _TYPE (and _ROLE for that matter) is arbitrary from a
>> functional point of view. I say that since Smack has users, but
>> not types or roles, _USER makes the most sense.
> Perhaps I misunderstand, but Smack labels don't represent users (i.e.
> user identity) in any way, so it seemed like a mismatch to use the _USER
> flag there.  Whereas types in SELinux bear some similarity to Smack
> labels - simple unstructured names whose meaning is only defined by the
> policy rules.
> Regardless, it seems like the audit maintainers ought to weigh in on the
> matter.

I don't count as an audit maintainer but I think as long as the
man page is updated to say something other than:

    Program's SE Linux User

then its fine for multiple LSMs to use the same rule flags and its
better than inventing new ones for each LSM.  I don't have an opinion
on which flag that's currently specific to SELinux should be recycled
but I think the manpage could be made more generic for all of them.

>>> Certainly will confuse matters if a user has audit filters on SELinux
>>> users in their /etc/audit/audit.rules and then boots a kernel with Smack
>>> enabled.
>> Somehow I doubt that will be their biggest concern.

I agree.

-- ljk

  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-10 12:49 [RFC][PATCH] Smack<->Audit integration Ahmed S. Darwish
2008-03-10 16:07 ` Casey Schaufler
2008-03-10 18:26   ` Ahmed S. Darwish
2008-03-10 18:43     ` Casey Schaufler
2008-03-12  2:44       ` [RFC][PATCH -v2] Smack: Integrate with Audit Ahmed S. Darwish
2008-03-12  4:23         ` Casey Schaufler
2008-03-12 12:18           ` [PATCH -v2b] " Ahmed S. Darwish
2008-03-12 12:52         ` [RFC][PATCH -v2] " Stephen Smalley
2008-03-12 15:40           ` Casey Schaufler
2008-03-12 15:48             ` Stephen Smalley
2008-03-12 16:23               ` Linda Knippers [this message]
2008-03-12 16:43               ` Ahmed S. Darwish
2008-03-12 18:09                 ` Casey Schaufler
2008-03-13 13:55           ` Steve Grubb

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

LKML Archive on

Archives are clonable:
	git clone --mirror lkml/git/0.git
	git clone --mirror lkml/git/1.git
	git clone --mirror lkml/git/2.git
	git clone --mirror lkml/git/3.git
	git clone --mirror lkml/git/4.git
	git clone --mirror lkml/git/5.git
	git clone --mirror lkml/git/6.git
	git clone --mirror lkml/git/7.git
	git clone --mirror lkml/git/8.git
	git clone --mirror lkml/git/9.git
	git clone --mirror lkml/git/10.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ \
	public-inbox-index lkml

Example config snippet for mirrors

Newsgroup available over NNTP:

AGPL code for this site: git clone