From owner-freebsd-hackers@FreeBSD.ORG Wed Oct 26 17:55:41 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D72BD16A41F for ; Wed, 26 Oct 2005 17:55:41 +0000 (GMT) (envelope-from thorpej@shagadelic.org) Received: from mail.shagadelic.org (isc-temp1.netbsd.org [204.152.190.30]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9DE2D43D48 for ; Wed, 26 Oct 2005 17:55:41 +0000 (GMT) (envelope-from thorpej@shagadelic.org) Received: from [17.221.46.152] (A17-221-46-152.apple.com [17.221.46.152]) by mail.shagadelic.org (Postfix) with ESMTP id 05E6A3CA162; Wed, 26 Oct 2005 10:55:41 -0700 (PDT) In-Reply-To: <20051026172252.GA23243@netbsd.org> References: <200510242235.48403.hselasky@c2i.net> <20051026172252.GA23243@netbsd.org> Mime-Version: 1.0 (Apple Message framework v746.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: Jason Thorpe Date: Wed, 26 Oct 2005 10:55:39 -0700 To: Bill Studenmund X-Mailer: Apple Mail (2.746.2) X-Mailman-Approved-At: Thu, 27 Oct 2005 12:47:34 +0000 Cc: freebsd-hackers@freebsd.org, tech-kern@netbsd.org, Hans Petter Selasky Subject: Re: FreeBSD 5/6/7 kernel emulator for NetBSD 2.x X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Oct 2005 17:55:42 -0000 On Oct 26, 2005, at 10:22 AM, Bill Studenmund wrote: > In the past, we (NetBSD folks) have talked about a devfs. One issue > that > has come up (I'll be honest, I've raised it a lot) is a desire to > retain > permission changes across boots, and to tie devices (when possible) > to a > device-specific attribute rather than a probe order. The permission thing is solvable using scripts that can fix up the perms after mount. The "nodes named after attributes" thing is interesting... and largely something I'm concerned about with wedges, although in that case, it's pretty easy to handle from within wedges itself. > Does FreeBSD's devfs support locators and persistent information? Are > there plans to support something like that, if not? FreeBSD's devfs does not, to my knowledge, include the things that you have mentioned above. FWIW, I think a devfs based on our new tmpfs would be better for NetBSD. -- thorpej