linux-kernel - Re: [capabilities] Allow normal inheritance for a configurable set of capabilities

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Date:	Tue, 3 Feb 2015 18:26:53 +0100
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>,
	Jonathan Corbet <corbet@....net>,
	Aaron Jones <aaronmdjones@...il.com>, Ted Ts'o <tytso@....edu>,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, akpm@...uxfoundation.org,
	morgan@...nel.org
Subject: Re: [capabilities] Allow normal inheritance for a configurable set
 of capabilities

Quoting Christoph Lameter (cl@...ux.com):
> On Tue, 3 Feb 2015, Serge E. Hallyn wrote:
> 
> > We've currently got two proposals.  (Three includig yours;  but I explained my
> > problem with yours earlier this morning -  do appreciate the proposal and
> > the patch though, really, thanks)  It's worth digging into the details of
> > each, but if they end up complicating things then perhaps "dropping
> > capabilities and going with something new" ought to be another proposal.
> 
> Ok that is about the binding to a person and executable?

It's about at least making it per-process(-tree).

> So you think there should be a cap_inheritable mask settable in the caps
> of each file.

No.  I mean,  we have that now.  I just want to require a privileged process
to fill in the pA in the first place.  If people are currently using file
caps "as intended" I don't want behavior to change for them.
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