From owner-freebsd-hackers  Fri Nov 17 14:08:53 1995
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.6.12/8.6.6) id OAA02279
          for hackers-outgoing; Fri, 17 Nov 1995 14:08:53 -0800
Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.19])
          by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id OAA02270
          for <hackers@FreeBSD.ORG>; Fri, 17 Nov 1995 14:08:45 -0800
Received: (from bde@localhost) by godzilla.zeta.org.au (8.6.9/8.6.9) id JAA25421; Sat, 18 Nov 1995 09:07:50 +1100
Date: Sat, 18 Nov 1995 09:07:50 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199511172207.JAA25421@godzilla.zeta.org.au>
To: grog@lemis.de, hackers@FreeBSD.ORG
Subject: Re: elm problem - "solved"
Sender: owner-hackers@FreeBSD.ORG
Precedence: bulk

>I really have great difficulty understanding why this change was made.
>It means that old FreeBSD and BSD/386 binaries won't work correctly
>under FreeBSD or BSD/OS Versions 2.  I can't see any advantage at all
>in this change.  Grrrr.

They wouldn't have worked anyway, because off_t was smaller.  Apparently
4.4 took this breakage as an opportunity to improve the layout of
`struct flock'.  For some reason, there are no compatibility syscalls for
fcntl() or flock() like there are for lseek(), mmap(), and other syscalls
affected by the off_t change.  It is too late to fix this now, because
splitting the syscalls would break all 4.4 binaries that use them.

Bruce