Return-Path: linux-nfs-owner@vger.kernel.org Received: from bombadil.infradead.org ([198.137.202.9]:37952 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752718Ab3J1JxJ (ORCPT ); Mon, 28 Oct 2013 05:53:09 -0400 Date: Mon, 28 Oct 2013 02:53:01 -0700 From: Hellwig Christoph To: "Myklebust, Trond" Cc: Hellwig Christoph , "Matt W. Benjamin" , Dr Fields James Bruce , Christoph Anton Mitterer , Mailing List Linux NFS , Wheeler Ric Subject: Re: XATTRs in NFS? Message-ID: <20131028095301.GA23614@infradead.org> References: <312486415.16.1382796101374.JavaMail.root@thunderbeast.private.linuxbox.com> <5FC093E3-1CD3-4AC7-A91F-37C8DEC6BEFE@netapp.com> <20131027165628.GA447@infradead.org> <95C57010-2A89-423C-8668-DF963ABF8BB6@netapp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <95C57010-2A89-423C-8668-DF963ABF8BB6@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Sun, Oct 27, 2013 at 06:07:46PM +0000, Myklebust, Trond wrote: > The user xattrs are in principle harmless. What about "trusted.*"? trusted ones are still fairly harmless and exist in most implementations under a slightly different name. They aren't quite as essential, though. The important point is to not carry over the system and security namespacs. Those are a bad and Linux specific mistake to abuse the xattr interface for all kinds of other interfaces. This isn't something that should be carried over to other standards.