linux-kernel - Re: [PATCH 4/7] allow killing tasks in your own or child userns

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Message-ID: <20110111043214.GA24770@mail.hallyn.com>
Date:	Tue, 11 Jan 2011 04:32:14 +0000
From:	"Serge E. Hallyn" <serge@...lyn.com>
To:	Oren Laadan <orenl@...columbia.edu>
Cc:	Serge Hallyn <serge.hallyn@...onical.com>,
	Bastian Blank <bastian@...di.eu.org>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	containers@...ts.linux-foundation.org,
	kernel list <linux-kernel@...r.kernel.org>,
	LSM <linux-security-module@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Kees Cook <kees.cook@...onical.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Michael Kerrisk <mtk.manpages@...il.com>
Subject: Re: [PATCH 4/7] allow killing tasks in your own or child userns

Quoting Oren Laadan (orenl@...columbia.edu):
...
> > If permission is granted based on userids and the capability
> > isn't needed, then we don't want to needlessly set PF_SUPERPRIV.
> 
> A bit off-topic: does this means that c/r needs to save and 
> restore this process flag ?

It should, yeah.  (Until we decide to nuke the flag)

thanks,
-serge
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