From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933330Ab1JNSEg (ORCPT ); Fri, 14 Oct 2011 14:04:36 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:55467 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755828Ab1JNSEf (ORCPT ); Fri, 14 Oct 2011 14:04:35 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: "Ted Ts'o" Cc: Kyle Moffett , "J. Bruce Fields" , Matt Helsley , Lennart Poettering , Kay Sievers , linux-kernel@vger.kernel.org, harald@redhat.com, david@fubar.dk, greg@kroah.com, Linux Containers , Linux Containers , "Serge E. Hallyn" , Daniel Lezcano , Paul Menage References: <20111011013201.GA7948@thunk.org> <20111011020530.GG16723@count0.beaverton.ibm.com> <20111011032523.GB7948@thunk.org> <203BBB0D-293D-4BFB-A57B-41C56F58F9B3@mit.edu> <20111012175702.GA23231@fieldses.org> <20111012190452.GA23845@fieldses.org> <20111014155406.GC13119@thunk.org> Date: Fri, 14 Oct 2011 11:04:55 -0700 In-Reply-To: <20111014155406.GC13119@thunk.org> (Ted Ts'o's message of "Fri, 14 Oct 2011 11:54:06 -0400") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-XM-SPF: eid=;;;mid=;;;hst=in02.mta.xmission.com;;;ip=98.207.153.68;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1/m9p6jwNMDKv6ohp9KH4KeVhOeJjemy3o= X-SA-Exim-Connect-IP: 98.207.153.68 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -3.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa04 1397; Body=1 Fuz1=1 Fuz2=1] * 0.8 RDNS_NONE Delivered to internal network by a host with no rDNS * 0.4 UNTRUSTED_Relay Comes from a non-trusted relay X-Spam-DCC: XMission; sa04 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;Ted Ts'o X-Spam-Relay-Country: ** Subject: Re: Detecting if you are running in a container X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Fri, 06 Aug 2010 16:31:04 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ted Ts'o writes: >> I am of course making it sound a million times easier than it's >> actually likely to be, but I do think it's possible without too many >> odd corner cases. > > It's not the corner cases, it's all of the different name spaces that > different system administrators and their sites are going to want to > use, and how to support them all.... > > And of course, once we start naming uid name spaces, eventually > someone will want to virtualize containers, and then we will have > namespaces for namespaces. (It's turtles all the way down! :-) I have found and merged a solution that allows us to name namespaces without needing a namespaces for namespaces. Eric