From owner-freebsd-hackers Fri Feb 9 1:14: 2 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from ns.sanda.gr.jp (ns.sanda.gr.jp [210.232.122.18]) by hub.freebsd.org (Postfix) with ESMTP id 9BB3837B69D for ; Fri, 9 Feb 2001 01:13:44 -0800 (PST) Received: from ever.sanda.gr.jp (epoch [10.93.63.51]) by ns.sanda.gr.jp (8.9.3/3.7W) with ESMTP id SAA71443; Fri, 9 Feb 2001 18:13:43 +0900 (JST) From: non@ever.sanda.gr.jp Received: from localhost (localhost [127.0.0.1]) by ever.sanda.gr.jp (8.8.8/3.3W9) with ESMTP id SAA26344; Fri, 9 Feb 2001 18:13:42 +0900 (JST) To: supenguin@bigfoot.com Cc: freebsd-hackers@freebsd.org Subject: Re: mount checking for read-only media In-Reply-To: <3A837A0A.DAB3520A@columbus.rr.com> References: <3A837A0A.DAB3520A@columbus.rr.com> X-Mailer: Mew version 1.94 on Emacs 19.28 / Mule 2.3 =?iso-2022-jp?B?KBskQkt2RSYyVhsoQik=?= Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20010209181342S.non@ever.sanda.gr.jp> Date: Fri, 09 Feb 2001 18:13:42 +0900 X-Dispatcher: imput version 20000228(IM140) Lines: 16 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG From: Kenny Drobnack Date: Fri, 09 Feb 2001 00:03:06 -0500 > Is some system call to check the hardware to see if its physically > writable? I figure there is. I want to start hacking at the kernel a > bit, and it seems like something simple (comparitively) would be a good > place to start. Up there on my wish list is getting a journaling > filesystem ported to FreeBSD. It's not system call but `od' driver does check if the medium is writable or not. It returns EACCESS when the mount option is -rw and the medium is read-only. `od' is drived from `da' so quick hack will do the trick. ftp://daemon.jp.FreeBSD.org/pub/FreeBSD-jp/OD/ // Noriaki Mitsunaga // To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message