linux-kernel - Re: [PATCH v4 1/2] capabilities: Ambient capabilities

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Message-ID: <alpine.LRH.2.11.1507152033420.8351@namei.org>
Date:	Wed, 15 Jul 2015 21:13:51 +1000 (AEST)
From:	James Morris <jmorris@...ei.org>
To:	Andy Lutomirski <luto@...nel.org>
cc:	Andrew Morton <akpm@...uxfoundation.org>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	Serge Hallyn <serge.hallyn@...ntu.com>,
	James Morris <james.l.morris@...cle.com>,
	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
	"Ted Ts'o" <tytso@....edu>, "Andrew G. Morgan" <morgan@...nel.org>,
	Linux API <linux-api@...r.kernel.org>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Austin S Hemmelgarn <ahferroin7@...il.com>,
	linux-security-module <linux-security-module@...r.kernel.org>,
	Aaron Jones <aaronmdjones@...il.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Markku Savela <msa@...h.iki.fi>,
	Kees Cook <keescook@...omium.org>,
	Jonathan Corbet <corbet@....net>,
	Christoph Lameter <cl@...ux.com>,
	Andy Lutomirski <luto@...capital.net>
Subject: Re: [PATCH v4 1/2] capabilities: Ambient capabilities

On Tue, 14 Jul 2015, Andy Lutomirski wrote:

> ===== The proposed change =====
> 
> This patch adds a fifth capability mask called the ambient mask
> (pA).  pA does what most people expect pI to do.
> 

This looks good, and I think it will lead to better overall security 
because people will find capabilities easier to use for real-world 
scenarios.

Has it had enough security review?  This is a significant new behavior 
being added to a widely enabled security module.



- James
-- 
James Morris
<jmorris@...ei.org>

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