From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexander Viro <viro@math.psu.edu>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] 9fs/9auth for FreeBSD
In-Reply-To: <3AC4D76D.EC275C25@arl.army.mil>
Message-ID: <Pine.GSO.4.21.0104020559080.12034-100000@weyl.math.psu.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Date: Mon,  2 Apr 2001 06:04:23 -0400
Topicbox-Message-UUID: 78347318-eac9-11e9-9e20-41e7f4b1d025



On Mon, 2 Apr 2001, Douglas A. Gwyn wrote:

> Alexander Viro wrote:
> > PS: POSIX says nothing, since append-only is BSDism and POSIX is a
> > codification of Missed'em'V bugs, so append-only is out of scope.
>
> That is uncalled-for and inaccurate.  We put considerable effort
> into accommodating *both* the BSD and USG variants of UNIX when
> drawing up the (initial) POSIX specs.
>
> O_APPEND was certainly included in the 1988 IEEE 1003.1 (POSIX)
> specification; it's defined in <fcntl.h> and means that the file
> offset is to be set to the end of the file prior to each write.

Back in 1988 append-only didn't exist. O_APPEND behaviour is the only
part of the thing where everyone agrees - the problem is in the
treatment of append-only files (thing that was introduced after 1988)
when opened _without_ O_APPEND.