From owner-freebsd-current@FreeBSD.ORG  Mon Mar 14 23:34:05 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id D38A516A4CE
	for <freebsd-current@FreeBSD.ORG>;
	Mon, 14 Mar 2005 23:34:05 +0000 (GMT)
Received: from harmony.village.org (rover.village.org [168.103.84.182])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 663F643D5C
	for <freebsd-current@FreeBSD.ORG>;
	Mon, 14 Mar 2005 23:34:05 +0000 (GMT)	(envelope-from imp@bsdimp.com)
Received: from localhost (localhost.village.org [127.0.0.1])
	by harmony.village.org (8.13.3/8.13.1) with ESMTP id j2ENXZ13004806;
	Mon, 14 Mar 2005 16:33:35 -0700 (MST)
	(envelope-from imp@bsdimp.com)
Date: Mon, 14 Mar 2005 16:33:34 -0700 (MST)
Message-Id: <20050314.163334.39157663.imp@bsdimp.com>
To: wollman@khavrinen.lcs.mit.edu
From: Warner Losh <imp@bsdimp.com>
In-Reply-To: <200503142328.j2ENSQmv092439@khavrinen.lcs.mit.edu>
References: <2617.172.16.0.199.1110748478.squirrel@wettoast.dyndns.org>
	<20050313.152624.59920781.imp@bsdimp.com>
	<200503142328.j2ENSQmv092439@khavrinen.lcs.mit.edu>
X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
cc: freebsd-current@FreeBSD.ORG
Subject: Re: COMPAT_43 ?
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 14 Mar 2005 23:34:05 -0000

From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Subject: Re: COMPAT_43 ?
Date: Mon, 14 Mar 2005 18:28:26 -0500 (EST)

> <<On Sun, 13 Mar 2005 15:26:24 -0700 (MST), "M. Warner Losh" <imp@bsdimp.com> said:
> 
> > 	(6) The old creat, mknod, lseek, stat, truncate, getdirentries
> >             interface are covered by this as well (again, so old
> >             binaries can work, and likely there's some emulation code
> >             that depends on it).
> 
> In at least a significant number of these cases, the "old binaries"
> would be 4.3 binaries on a VAX.  Look at rev. 1.1 of syscalls.master
> and notice how many of them were already marked COMPAT in 4.4-Lite.  I
> believe creat, wait, sigvec, sigblock, sigsetmask, and killpg were
> also COMPAT_43 in Net/2.  creat() has never been a syscall in the
> entire life of FreeBSD, but we're still carrying around the code to
> implement it for "compatibility" with old VAX binaries.

Clearly this is to make sure that if we ever do a port to a VAX we can
have the compat binaries :-)

Warner