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From: Christoph Lameter <cl@linux.com>
To: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Serge Hallyn <serge.hallyn@ubuntu.com>,
	Serge Hallyn <serge.hallyn@canonical.com>,
	Andy Lutomirski <luto@amacapital.net>,
	Aaron Jones <aaronmdjones@gmail.com>, "Ted Ts'o" <tytso@mit.edu>,
	linux-security-module@vger.kernel.org, akpm@linuxfoundation.org,
	"Andrew G. Morgan" <morgan@kernel.org>,
	Mimi Zohar <zohar@linux.vnet.ibm.com>,
	Austin S Hemmelgarn <ahferroin7@gmail.com>,
	Markku Savela <msa@moth.iki.fi>,
	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
	Michael Kerrisk <mtk.manpages@gmail.com>,
	Jonathan Corbet <corbet@lwn.net>
Subject: Re: [PATCH] capabilities: Ambient capability set V1
Date: Tue, 24 Feb 2015 09:58:13 -0600 (CST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1502240956400.29006@gentwo.org> (raw)
In-Reply-To: <20150224154715.GA20682@mail.hallyn.com>

On Tue, 24 Feb 2015, Serge E. Hallyn wrote:

> The other way to look at it then is that it's basically as though the
> privileged task (which has CAP_SETFCAP) could've just added fI=full to
> all binaries on the filesystem;  instead it's using the ambient set
> so that the risk from fI=full is contained to its own process tree.

The way that our internal patch works is to leave these things alone and
just check the ambient mask in the *capable*() functions. That way the
behavior of the existing cap bits does not change but the ambient caps
stay available. Apps have no surprises.




  reply	other threads:[~2015-02-24 15:58 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-05 21:56 [PATCH] capabilities: Ambient capability set V1 Christoph Lameter
2015-02-05 21:56 ` Christoph Lameter
2015-02-23 14:58 ` Christoph Lameter
2015-02-23 14:58   ` Christoph Lameter
2015-02-23 15:44   ` Andy Lutomirski
2015-02-23 15:53     ` Christoph Lameter
2015-02-23 15:53       ` Christoph Lameter
2015-02-23 15:59       ` Andy Lutomirski
2015-02-23 16:41         ` Christoph Lameter
2015-02-23 23:51           ` Andy Lutomirski
2015-02-24 15:48             ` Christoph Lameter
2015-02-23 16:16   ` Serge Hallyn
2015-02-23 16:33     ` Andy Lutomirski
2015-02-23 16:45       ` Serge E. Hallyn
2015-02-23 16:45         ` Serge E. Hallyn
2015-02-23 16:47       ` Christoph Lameter
2015-02-23 16:44     ` Christoph Lameter
2015-02-23 16:44       ` Christoph Lameter
2015-02-23 16:46       ` Serge E. Hallyn
2015-02-23 16:50         ` Christoph Lameter
2015-02-23 18:15           ` Serge Hallyn
2015-02-23 18:27             ` Christoph Lameter
2015-02-24  5:19             ` Serge E. Hallyn
2015-02-24 15:47               ` Serge E. Hallyn
2015-02-24 15:47                 ` Serge E. Hallyn
2015-02-24 15:58                 ` Christoph Lameter [this message]
2015-02-24 16:44                   ` Serge Hallyn
2015-02-24 17:28                     ` Christoph Lameter
2015-02-25  3:32                       ` Serge Hallyn
2015-02-25 20:25                         ` Christoph Lameter
2015-02-25 20:25                           ` Christoph Lameter
2015-02-26 15:35                           ` Serge E. Hallyn
2015-02-26 18:28                             ` Christoph Lameter
2015-02-26 18:28                               ` Christoph Lameter
2015-02-26 19:32                               ` Serge E. Hallyn
2015-02-26 19:38                                 ` Andy Lutomirski
2015-02-26 20:16                                   ` Christoph Lameter
2015-02-26 20:16                                     ` Christoph Lameter
2015-02-26 20:33                                   ` Serge E. Hallyn
2015-02-26 20:13                                 ` Christoph Lameter
2015-02-26 20:13                                   ` Christoph Lameter
2015-02-26 20:34                                   ` Serge E. Hallyn
2015-02-26 20:51                                     ` Andy Lutomirski
2015-02-26 20:55                                       ` Serge E. Hallyn
2015-02-26 20:58                                         ` Andy Lutomirski
2015-02-26 20:58                                           ` Andy Lutomirski
2015-02-26 21:19                                           ` Serge E. Hallyn
2015-02-26 21:29                                           ` Christoph Lameter
2015-02-26 21:09                                     ` Christoph Lameter
2015-02-26 21:13                                       ` Serge E. Hallyn
2015-02-26 21:13                                         ` Serge E. Hallyn
2015-02-26 21:23                                         ` Christoph Lameter
2015-02-26 21:32                                           ` Serge E. Hallyn
2015-02-26 21:37                                             ` Christoph Lameter

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