From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jamie Lokier Subject: Re: [RFC] FUSE permission modell (Was: fuse review bits) Date: Wed, 13 Apr 2005 17:13:44 +0100 Message-ID: <20050413161344.GC12825@mail.shareable.org> References: <20050412144529.GE10995@mail.shareable.org> <20050412160409.GH10995@mail.shareable.org> <20050412164401.GA14149@mail.shareable.org> <20050412171338.GA14633@mail.shareable.org> <20050413125609.GA9571@vagabond> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: bulb@ucw.cz, 7eggert@gmx.de, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, hch@infradead.org, akpm@osdl.org, viro@parcelfarce.linux.theplanet.co.uk Return-path: Received: from mail.shareable.org ([81.29.64.88]:16545 "EHLO mail.shareable.org") by vger.kernel.org with ESMTP id S261339AbVDMQOE (ORCPT ); Wed, 13 Apr 2005 12:14:04 -0400 To: Miklos Szeredi Content-Disposition: inline In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Miklos Szeredi wrote: > > > Aren't there some assumptions in VFS that currently make this > > > impossible? > > > > I believe it's OK with VFS, but applications would be confused to death. > > Well, there really is one issue -- dentries have exactly one parent, so > > what do you do when opening a file with hardlinks as a directory? (In > > fact IIRC that is what lead to all the funny talk about mountpoints, > > since they don't have this limitation) > > OK, that makes sense. > > It would be quite interesting to see how applications react. Maybe > I'll hack something up :) Look up the rather large linux-kernel & linux-fsdevel thread "silent semantic changes with reiser4" and it's followup threads, from last year. It's already been tried. You will also find sensible ideas on what semantics it should have to do it properly. -- Jamie