From owner-freebsd-hackers Tue May 30 16:11:40 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from Awfulhak.org (tun.AwfulHak.org [194.242.139.173]) by hub.freebsd.org (Postfix) with ESMTP id ED88E37BA74 for ; Tue, 30 May 2000 16:11:26 -0700 (PDT) (envelope-from brian@Awfulhak.org) Received: from hak.lan.Awfulhak.org (root@hak.lan.awfulhak.org [172.16.0.12]) by Awfulhak.org (8.9.3/8.9.3) with ESMTP id AAA73130; Wed, 31 May 2000 00:11:50 +0100 (BST) (envelope-from brian@Awfulhak.org) Received: from hak.lan.Awfulhak.org (brian@localhost [127.0.0.1]) by hak.lan.Awfulhak.org (8.9.3/8.9.3) with ESMTP id AAA27626; Wed, 31 May 2000 00:11:45 +0100 (BST) (envelope-from brian@Awfulhak.org) Message-Id: <200005302311.AAA27626@hak.lan.Awfulhak.org> X-Mailer: exmh version 2.1.1 10/15/1999 To: Poul-Henning Kamp Cc: bpechter@shell.monmouth.com, freebsd-hackers@FreeBSD.ORG, dhh@androcles.com, brian@hak.lan.Awfulhak.org Subject: Re: Linux and FreeBSD dual universe In-Reply-To: Message from Poul-Henning Kamp of "Sun, 28 May 2000 16:47:29 +0200." <21049.959525249@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Date: Wed, 31 May 2000 00:11:44 +0100 From: Brian Somers Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > In message <200005281042.GAA54833@bg-tc-ppp32.monmouth.com>, Bill Pecht= er write > s: > >> Date: Thu, 25 May 2000 09:42:51 -0700 (PDT) > >> From: "Duane H. Hesser" > >> Subject: Re: FreeBSD kernel as a replacement for Linux kernel > >> = > >> Anyone remember the old Pyramid OSX 'universe' command? > >> = > >> command like "att ls", or even "att cc ....". The universe was > >> marked by a flag which affected the interpretation of "conditional > >> symbolic links". A separate syscall was available to create > = > It did n=F8t use variant symbolic links, it used a namei hack. > = > If you had a directory containing: > . > .. > .ucbfoo > .attfoo > bar > = > and you were in universe "ucb" you would see: > . > foo > bar > = > where "foo" would take you to ".ucbfoo" > = > it was that simple. I believe it was Sequent's ``Dynix'' that had the flag-dependent = symbolic links. Sysv in those days didn't do symlinks at all ! > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > phk@FreeBSD.ORG | TCP/IP since RFC 956 > FreeBSD coreteam member | BSD since 4.3-tahoe = > Never attribute to malice what can adequately be explained by incompete= nce. -- = Brian Don't _EVER_ lose your sense of humour ! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message