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From: James Morris <jmorris@namei.org>
To: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Casey Schaufler <casey@schaufler-ca.com>,
	Nicholas Franck <nhfran2@tycho.nsa.gov>,
	paul@paul-moore.com, selinux@vger.kernel.org,
	linux-security-module@vger.kernel.org, luto@amacapital.net,
	keescook@chromium.org, serge@hallyn.com,
	john.johansen@canonical.com, mortonm@chromium.org
Subject: Re: [RFC PATCH] security, capability: pass object information to security_capable
Date: Sat, 13 Jul 2019 14:35:44 +1000 (AEST)
Message-ID: <alpine.LRH.2.21.1907131430030.3804@namei.org> (raw)
In-Reply-To: <4fb3a599-b1d8-7cc2-759a-02195251e344@tycho.nsa.gov>

On Fri, 12 Jul 2019, Stephen Smalley wrote:

> > > If we want to apply least privilege, then this is a desirable facility.
> > 
> > The capability mechanism is object agnostic by design.
> 
> Some might argue that's a flawed design.

Narrator: it's a flawed design.

> > > I understand that doesn't mesh with Smack's mental modelbut it would
> > > probably be useful to both SELinux and AppArmor, among others.
> > 
> > I'm perfectly happy to have the information transmitted.
> > I think a separate interface for doing so is appropriate.
> 
> As above, I don't see any way to do that that isn't just adding overhead.
> 

Agreed, and even so, part of the point of LSM is to allow existing 
security models to be extended to meet a wider range of security 
requirements.

-- 
James Morris
<jmorris@namei.org>


  parent reply index

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-12 17:34 [RFC PATCH] security,capability: " Nicholas Franck
2019-07-12 17:50 ` James Morris
2019-07-12 18:02   ` [RFC PATCH] security, capability: " Stephen Smalley
2019-07-15 18:42     ` Richard Guy Briggs
2019-07-12 17:58 ` [RFC PATCH] security,capability: " Casey Schaufler
2019-07-12 18:25   ` [RFC PATCH] security, capability: " Stephen Smalley
2019-07-12 19:54     ` Casey Schaufler
2019-07-12 20:21       ` Stephen Smalley
2019-07-12 22:37         ` Casey Schaufler
2019-07-13  4:35         ` James Morris [this message]
2019-07-13 18:46           ` Casey Schaufler
2019-07-13  4:29       ` James Morris
2019-07-16 14:03       ` Serge E. Hallyn
2019-07-16 14:21         ` Andy Lutomirski
2019-07-16 15:03           ` Casey Schaufler
2019-07-16 15:08           ` Stephen Smalley
2019-07-16 14:43         ` Casey Schaufler
2019-07-16 14:16 ` [RFC PATCH] security,capability: " Serge E. Hallyn

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