From: Ben Myers <bpm@sgi.com>
To: Dave Chinner <david@fromorbit.com>
Cc: Dwight Engen <dwight.engen@oracle.com>, xfs@oss.sgi.com
Subject: Re: [PATCH v7 7/7] enable building user namespace with xfs
Date: Thu, 1 Aug 2013 10:06:43 -0500 [thread overview]
Message-ID: <20130801150643.GV3111@sgi.com> (raw)
In-Reply-To: <20130731232852.GE7118@dastard>
Dave,
On Thu, Aug 01, 2013 at 09:28:52AM +1000, Dave Chinner wrote:
> On Wed, Jul 31, 2013 at 08:25:23AM -0500, Ben Myers wrote:
> > Hey,
> >
> > On Wed, Jul 31, 2013 at 10:21:19AM +1000, Dave Chinner wrote:
> > > On Tue, Jul 30, 2013 at 06:40:21PM -0500, Ben Myers wrote:
> > > > On Mon, Jul 29, 2013 at 11:07:09PM -0400, Dwight Engen wrote:
> > > > > >From e6a9ee0cfa0ed40484f66bc1726dc19de36038b8 Mon Sep 17 00:00:00 2001
> > > > > From: Dwight Engen <dwight.engen@oracle.com>
> > > > > Date: Tue, 2 Jul 2013 09:52:54 -0400
> > > > > Subject: [PATCH 7/7] enable building user namespace with xfs
> > > > >
> > > > > Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
> > > >
> > > > Was there a patch running around to limit bulkstat to init_user_ns? Any other
> > > > items that needed to be addressed before applying this patch?
> > >
> > > Bulkstat has a capable(CAP_SYS_ADMIN) check and therefore can only be
> > > executed in the init name space. Similarly, all the open-by-handle
> > > interfaces have the same capable() checks so they can only be
> > > executed int he init name space, too.
> >
> > Gah. I was under the impression that you could have a process with
> > CAP_SYS_ADMIN in a namespace other than init_user_ns.
>
> Ben, until about a week and a half ago I was also working under that
> same understanding as you.
Well huh. According to Dwight you can have a process with CAP_SYS_ADMIN in a
namespace other than init_user_ns. Kinda cool, IMO.
-Ben
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next prev parent reply other threads:[~2013-08-01 15:06 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-30 3:07 [PATCH v7 7/7] enable building user namespace with xfs Dwight Engen
2013-07-30 23:40 ` Ben Myers
2013-07-31 0:21 ` Dave Chinner
2013-07-31 13:25 ` Ben Myers
2013-07-31 17:09 ` Dwight Engen
2013-07-31 23:28 ` Dave Chinner
2013-08-01 15:06 ` Ben Myers [this message]
2013-08-01 16:17 ` Dwight Engen
2013-08-06 15:11 ` Serge E. Hallyn
2013-08-07 14:59 ` Serge E. Hallyn
2013-08-07 15:01 ` Serge E. Hallyn
2013-08-11 23:57 ` ***** SUSPECTED SPAM ***** " Dave Chinner
2013-07-31 18:19 ` Dwight Engen
2013-07-31 23:43 ` Dave Chinner
2013-08-01 0:54 ` Gao feng
2013-07-31 7:20 ` Gao feng
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