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Message-ID: <20150226203405.GB18926@mail.hallyn.com>
Date: Thu, 26 Feb 2015 14:34:05 -0600
From: "Serge E. Hallyn" <serge@...lyn.com>
To: Christoph Lameter <cl@...ux.com>
Cc: "Serge E. Hallyn" <serge@...lyn.com>,
Serge Hallyn <serge.hallyn@...ntu.com>,
Serge Hallyn <serge.hallyn@...onical.com>,
Andy Lutomirski <luto@...capital.net>,
Aaron Jones <aaronmdjones@...il.com>, Ted Ts'o <tytso@....edu>,
linux-security-module@...r.kernel.org, akpm@...uxfoundation.org,
"Andrew G. Morgan" <morgan@...nel.org>,
Mimi Zohar <zohar@...ux.vnet.ibm.com>,
Austin S Hemmelgarn <ahferroin7@...il.com>,
Markku Savela <msa@...h.iki.fi>,
Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
Michael Kerrisk <mtk.manpages@...il.com>,
Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH] capabilities: Ambient capability set V1
On Thu, Feb 26, 2015 at 02:13:00PM -0600, Christoph Lameter wrote:
> On Thu, 26 Feb 2015, Serge E. Hallyn wrote:
>
> > Andrew Morgan was against that. What if we changed
> >
> > pE' = pP' & (fE | pA)
> >
> > to
> >
> > if (pA)
> > pE' = pP' & fE
> > else
> > pE' = pP'
> >
>
> Same problem as before. The ambient bits will not be set in pE'.
And what if I weren't scatterbrained and we did
if (pA)
pE' = pP'
else
pE' = pP' & fE
All pP' bits would be set in pE'.
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