Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934601AbXJSC5o (ORCPT ); Thu, 18 Oct 2007 22:57:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763538AbXJSC5V (ORCPT ); Thu, 18 Oct 2007 22:57:21 -0400 Received: from hawking.rebel.net.au ([203.20.69.83]:33755 "EHLO hawking.rebel.net.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761103AbXJSC5U (ORCPT ); Thu, 18 Oct 2007 22:57:20 -0400 Message-ID: <47181D0C.3040504@davidnewall.com> Date: Fri, 19 Oct 2007 12:27:16 +0930 From: David Newall User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.2) Gecko/20070221 SeaMonkey/1.1.1 MIME-Version: 1.0 To: Al Viro CC: jaroslav.sykora@gmail.com, Jan Engelhardt , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [RFC PATCH 0/5] Shadow directories References: <200710181721.09201.jara@sin.cvut.cz> <200710181907.58643.jara@sin.cvut.cz> <4717BBBB.6040205@davidnewall.com> <4717C419.8060602@davidnewall.com> <20071018204703.GQ8181@ftp.linux.org.uk> In-Reply-To: <20071018204703.GQ8181@ftp.linux.org.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1143 Lines: 24 Al Viro wrote: > On Fri, Oct 19, 2007 at 06:07:45AM +0930, David Newall wrote: > >>> considerations of this whole scheme. Linux, like most Unix systems, >>> has never allowed hard links to directories for a number of reasons; >>> >> The claim is wrong. UNIX systems have traditionally allowed the >> superuser to create hard links to directories. See link(2) for 2.10BSD >> . >> Having got that wrong throws doubt on the argument; perhaps a path can >> simultaneously be a file and a directory. >> > > Learn to read. Linux has never allowed that. Most of the Unix systems > do not allow that. I did read the claim and it is ambiguous, in that it can reasonably be read to mean that most UNIX systems never allowed such links, which is wrong. All UNIX systems allowed it until relatively recently. - 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/