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Date: Fri, 24 Apr 2015 14:25:46 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
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To: Serge Hallyn <serge.hallyn@ubuntu.com>
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        Aaron Jones <aaronmdjones@gmail.com>,
        Serge Hallyn <serge.hallyn@canonical.com>,
        LKML <linux-kernel@vger.kernel.org>, Markku Savela <msa@moth.iki.fi>,
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Subject: Re: [RFC] capabilities: Ambient capabilities
In-Reply-To: <20150424190935.GN16377@ubuntumail>
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On Fri, 24 Apr 2015, Serge Hallyn wrote:

> > I object because CAP_SETPCAP is very powerful whereas
> > CAP_NET_BIND_SERVICE, for example, isn't.  I'm fine with having a
> > switch to turn off ambient caps, but requiring the "on" state to give
>
> Would only really be needed for the initial 'enable ambient caps for this
> process tree', though.  Once that was set, add/remove'ing caps from the
> ambient set wouldn't need to be required.

Exactly. Its much simpler than alternate approaches. And its convoluted
enough.