From owner-freebsd-current Wed Aug 27 03:12:19 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id DAA23876 for current-outgoing; Wed, 27 Aug 1997 03:12:19 -0700 (PDT) Received: from gneiss.eps.nagoya-u.ac.jp (gneiss.eps.nagoya-u.ac.jp [133.6.57.99]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id DAA23866 for ; Wed, 27 Aug 1997 03:12:08 -0700 (PDT) Received: from marble.eps.nagoya-u.ac.jp (localhost [127.0.0.1]) by gneiss.eps.nagoya-u.ac.jp (8.8.7/3.5Wpl3) with ESMTP id TAA08117 for ; Wed, 27 Aug 1997 19:11:04 +0900 (JST) Message-Id: <199708271011.TAA08117@gneiss.eps.nagoya-u.ac.jp> To: current@FreeBSD.ORG Subject: Re: Read-only mount of union filesystem From: KATO Takenori In-Reply-To: Your message of "Thu, 14 Aug 1997 02:20:41 +0900" References: <199708131720.CAA03222@gneiss.eps.nagoya-u.ac.jp> X-Mailer: Mew version 1.70 on Emacs 19.28.1 / Mule 2.3 X-PGP-Fingerprint: 03 72 85 36 62 46 23 03 52 B1 10 22 44 10 0D 9E Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Wed, 27 Aug 1997 19:11:04 +0900 Sender: owner-freebsd-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk As I wrote: > Bruce notified me that union fs doesn't support read-only mount. I, > now, consider that there are two ways to implement read-only mount: > > 1. To modify each fs layer stuff. > 2. To modify vfs layer stuff. Though I think second is better, I will modify union fs layer. It may take for long time to modify vnode/syscall layer, but I don't have enough time to do so :-(. ---- KATO Takenori Dept. Earth Planet. Sci., Nagoya Univ., Nagoya, 464-01, Japan PGP public key: finger kato@eclogite.eps.nagoya-u.ac.jp ------------------- Powered by FreeBSD(98) -------------------