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From: "Serge E. Hallyn" <serge@hallyn.com>
To: Christoph Lameter <cl@linux.com>
Cc: "Serge E. Hallyn" <serge@hallyn.com>,
	Andy Lutomirski <luto@amacapital.net>,
	Serge Hallyn <serge.hallyn@canonical.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Aaron Jones <aaronmdjones@gmail.com>,
	LSM List <linux-security-module@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Andrew Morton <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 API <linux-api@vger.kernel.org>,
	Michael Kerrisk <mtk.manpages@gmail.com>
Subject: Re: [PATCH] capabilities: Ambient capability set V2
Date: Mon, 9 Mar 2015 09:36:53 -0500	[thread overview]
Message-ID: <20150309143653.GA29594@mail.hallyn.com> (raw)
In-Reply-To: <alpine.DEB.2.11.1503090704230.25725@gentwo.org>

On Mon, Mar 09, 2015 at 07:05:24AM -0500, Christoph Lameter wrote:
> On Sat, 7 Mar 2015, Serge E. Hallyn wrote:
> 
> > > The ancestor here is ambient_test and when it is run pI will not be set
> > > despite the cap setting.
> >
> > ambient_test is supposed to set it.
> 
> I thought the setcap +i would do it.
> 
> So the setcap and setting of the file inheritance bits has no effect on
> pI? When the process starts pI is off despite fI being set?

Correct, pI must be set through capset().  Again, x in fI is saying
that the certain trusted users may have x in pP when they run the
binary;  x in pi means that the users may have x in pP when they run
certain files.  Other users running the file won't have x in pP, and
the special user running other files won't have x in pP.

  reply	other threads:[~2015-03-09 14:37 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-26 22:14 Christoph Lameter
2015-03-01  4:44 ` Serge E. Hallyn
2015-03-02 15:43   ` Christoph Lameter
2015-03-01 23:33 ` Serge E. Hallyn
2015-03-05 15:26   ` Christoph Lameter
2015-03-05 17:13     ` Serge E. Hallyn
2015-03-05 18:41       ` Christoph Lameter
2015-03-05 23:07         ` Andy Lutomirski
2015-03-06 15:47           ` Christoph Lameter
2015-03-06 15:50       ` Christoph Lameter
2015-03-06 16:34         ` Serge E. Hallyn
2015-03-06 18:53           ` Christoph Lameter
2015-03-06 19:02             ` Andy Lutomirski
2015-03-06 20:08               ` Serge E. Hallyn
2015-03-07 15:09                 ` Christoph Lameter
2015-03-07 21:35                   ` Serge E. Hallyn
2015-03-09 12:05                     ` Christoph Lameter
2015-03-09 14:36                       ` Serge E. Hallyn [this message]
     [not found]                         ` <CALQRfL4uG2v7SJWZhN2o=ARnSNLR9JAX6MMsCCsGaAz6JcZTsA@mail.gmail.com>
2015-03-10 15:47                           ` Christoph Lameter
2015-03-07 15:06               ` Christoph Lameter
2015-03-07 21:35                 ` Serge E. Hallyn
2015-03-14 19:04 ` Pavel Machek

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