linux-kernel - Re: [RFC][PATCH 2/4] sunrpc: Use utsnamespaces

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Message-Id: <1231299888.14345.369.camel@localhost>
Date:	Tue, 06 Jan 2009 19:44:48 -0800
From:	Matt Helsley <matthltc@...ibm.com>
To:	Trond Myklebust <Trond.Myklebust@...app.com>
Cc:	"J. Bruce Fields" <bfields@...ldses.org>,
	"Serge E. Hallyn" <serue@...ibm.com>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	linux-nfs@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Chuck Lever <chuck.lever@...cle.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Linux Containers <containers@...ts.osdl.org>,
	Cedric Le Goater <clg@...ibm.com>
Subject: Re: [RFC][PATCH 2/4] sunrpc: Use utsnamespaces

On Tue, 2009-01-06 at 19:23 -0500, Trond Myklebust wrote:
> On Tue, 2009-01-06 at 19:20 -0500, J. Bruce Fields wrote:
> > If it would be possible, for example, for the 'init' namespace to have
> > no network interfaces at all, then it would be nicer to use a name
> > that's at least been used with nfs at *some* point--just on the general
> > principle of not leaking information to a domain that the user wouldn't
> > expect it to.
> 
> Then RPC would fail. Thanks to the limitations imposed by selinux &
> friends, all RPC sockets have to be owned by the init process.

Interesting -- I'm not familiar with this requirement of selinux. Must
it be the init process of the initial pid namespace or could any pid
namespace's init process own it?

Cheers,
	-Matt Helsley

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