From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261500AbUBNJN5 (ORCPT ); Sat, 14 Feb 2004 04:13:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261506AbUBNJN5 (ORCPT ); Sat, 14 Feb 2004 04:13:57 -0500 Received: from moutng.kundenserver.de ([212.227.126.171]:460 "EHLO moutng.kundenserver.de") by vger.kernel.org with ESMTP id S261500AbUBNJN4 (ORCPT ); Sat, 14 Feb 2004 04:13:56 -0500 From: Christian Borntraeger To: Mike Bell , Greg KH Subject: Re: devfs vs udev, thoughts from a devfs user Date: Sat, 14 Feb 2004 10:13:50 +0100 User-Agent: KMail/1.5.4 Cc: linux-kernel@vger.kernel.org References: <20040210113417.GD4421@tinyvaio.nome.ca> <20040213211920.GH14048@kroah.com> <20040214085110.GG5649@tinyvaio.nome.ca> In-Reply-To: <20040214085110.GG5649@tinyvaio.nome.ca> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200402141013.50633.kernel@borntraeger.net> X-Provags-ID: kundenserver.de abuse@kundenserver.de auth:5a8b66f42810086ecd21595c2d6103b9 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Mike Bell wrote: > On Fri, Feb 13, 2004 at 01:19:20PM -0800, Greg KH wrote: > > > That's a pretty minor difference, from the kernel's point of view. > > > It's basically putting the same numbers in different fields. > > > > Heh, that's a HUGE difference! > > Only from userspace's point of view. To the kernel, it's basically the > same thing. No. Giving a major and minor number is simple. Creating a device node means: you have to define a policy. Now the kernel has to think about: - user id - group id - access rights - naming These are the reasons why devfsd was/is necessary for devfs. A Kernel should only enforce a policy, it should not define it. cheers Christian