Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753009Ab3G3EDS (ORCPT ); Tue, 30 Jul 2013 00:03:18 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:22025 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750875Ab3G3EDQ (ORCPT ); Tue, 30 Jul 2013 00:03:16 -0400 X-IronPort-AV: E=Sophos;i="4.89,775,1367942400"; d="scan'208";a="8064337" Message-ID: <51F73B56.1040401@cn.fujitsu.com> Date: Tue, 30 Jul 2013 12:04:38 +0800 From: Gao feng User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: Dave Chinner CC: dwight.engen@oracle.com, "Eric W. Biederman" , linux-fsdevel@vger.kernel.org, Linux Containers , linux-kernel@vger.kernel.org, "Serge E. Hallyn" , Ben Myers , Alex Elder , xfs@oss.sgi.com Subject: Re: [PATCH review 05/16] xfs: Update xfs_ioctl_setattr to handle projids in any user namespace References: <87txpaph4n.fsf@xmission.com> <1361149870-27732-1-git-send-email-ebiederm@xmission.com> <1361149870-27732-5-git-send-email-ebiederm@xmission.com> <20130219015550.GJ26694@dastard> <51F616F2.5040906@cn.fujitsu.com> <20130729075109.GF13468@dastard> <51F72FE6.4080202@cn.fujitsu.com> <20130730035748.GJ21982@dastard> In-Reply-To: <20130730035748.GJ21982@dastard> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/07/30 12:01:03, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/07/30 12:01:04, Serialize complete at 2013/07/30 12:01:04 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1498 Lines: 34 On 07/30/2013 11:57 AM, Dave Chinner wrote: > On Tue, Jul 30, 2013 at 11:15:50AM +0800, Gao feng wrote: >> On 07/29/2013 03:51 PM, Dave Chinner wrote: >>> http://oss.sgi.com/pipermail/xfs/2013-July/028467.html >>> >>> Basically, the discussion we are currently having is whether project >>> IDs should be exposed to user namespaces at all. e.g: >>> >>> http://oss.sgi.com/pipermail/xfs/2013-July/028497.html >>> http://oss.sgi.com/pipermail/xfs/2013-July/028551.html >>> >>> "Basically, until we have worked out *if* project quotas can be used >>> safely within user namespaces, we need to reject any attempt to use >>> them from within a user namespace container." >>> >> >> yes, seems this v6 patchset allows user in un-init user namespace to setup proj quota >> through ioctl, and the projid hasn't been converted to kprojid in this patchset. >> Doesn't this will cause user in container has the ability to change the proj quota >> which is set by root user in host? > > Dwight just posted v7. can you discuss your concerns in reposnse to > the relevant patch in that series, please? it's much easier for > everyone if we keep the discussion int eh one thread ;) > sure, I am compiling v7 patchset now in order to confirm my misgiving :) Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/