From owner-freebsd-hackers Sun Dec 16 12:29:15 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from netau1.alcanet.com.au (ntp.alcanet.com.au [203.62.196.27]) by hub.freebsd.org (Postfix) with ESMTP id 6EC3A37B417; Sun, 16 Dec 2001 12:29:11 -0800 (PST) Received: from mfg1.cim.alcatel.com.au (mfg1.cim.alcatel.com.au [139.188.23.1]) by netau1.alcanet.com.au (8.9.3 (PHNE_22672)/8.9.3) with ESMTP id HAA27695; Mon, 17 Dec 2001 07:29:08 +1100 (EDT) Received: from gsmx07.alcatel.com.au by cim.alcatel.com.au (PMDF V5.2-32 #37640) with ESMTP id <01KBYT8595WGVMJMZ9@cim.alcatel.com.au>; Mon, 17 Dec 2001 07:29:06 +1100 Received: (from jeremyp@localhost) by gsmx07.alcatel.com.au (8.11.6/8.11.6) id fBGKT5K60598; Mon, 17 Dec 2001 07:29:05 +1100 Content-return: prohibited Date: Mon, 17 Dec 2001 07:29:04 +1100 From: Peter Jeremy Subject: Re: Caldera and the Ancient UNIX license In-reply-to: <200112160618.fBG6IcK23973@minnie.tuhs.org>; from wkt@minnie.tuhs.org on Sun, Dec 16, 2001 at 05:18:37PM +1100 To: wkt@tuhs.org Cc: Greg Lehey , Terry Lambert , freebsd-hackers@FreeBSD.org Message-id: <20011217072904.P73243@gsmx07.alcatel.com.au> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline User-Agent: Mutt/1.2.5i References: <20011216115556.A62493@monorchid.lemis.com> <200112160618.fBG6IcK23973@minnie.tuhs.org> Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 2001-Dec-16 17:18:37 +1100, Warren Toomey wrote: >Firstly, call me crazy, but I thought the 2BSD filesystem layout was >essentially UFS, i.e i-nodes at the start, and therefore would be >pretty much the same as /sys/ufs/ufs in FreeBSD. I'll have to do a >compare of the source code and get back to you .... I'm specifically looking at 2.11BSD - which is architecturally UFS but various sizes and constants are different (eg fewer direct/indirect blocks in the inode). In some ways this simplifies things (it may be possible to re-use much or all of the FreeBSD UFS code) but it also confuses things (eg having two different struct dinode's defined, and there will probably be be global variable/function name clashes). In any case, I'm more interested in how to go about porting a new FS into FreeBSD, rather than having Terry actually do the port for me. The other almost-the-same UFS that could be useful is the Tru64 UFS. Last time I tried, I could mount a Tru64 UFS CD-ROM on FreeBSD, but the box would panic fairly quickly when I tried to access the FS (I didn't keep a close record and this was some time ago). Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message