Date: Tue, 30 May 2000 20:59:57 -0400 (EDT) From: Bill Pechter <pechter@pechter.dyndns.org> To: Brian Somers <brian@Awfulhak.org> Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>, bpechter@shell.monmouth.com, freebsd-hackers@FreeBSD.ORG, dhh@androcles.com, brian@hak.lan.Awfulhak.org Subject: Re: Linux and FreeBSD dual universe Message-ID: <200005310059.UAA08707@bg-tc-ppp940.monmouth.com> In-Reply-To: <200005302311.AAA27626@hak.lan.Awfulhak.org> from Brian Somers at "May 31, 2000 00:11:44 am"
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> > In message <200005281042.GAA54833@bg-tc-ppp32.monmouth.com>, Bill Pechter write > > s: > > >> Date: Thu, 25 May 2000 09:42:51 -0700 (PDT) > > >> From: "Duane H. Hesser" <dhh@androcles.com> > > >> 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 nøt 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 incompetence. > > -- > Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org> > <http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org> > Don't _EVER_ lose your sense of humour ! Poul-Henning -- OK -- then why was the link command modified to handle conditional links (ln -c -- I think was conditional symlinks on Pyramid. Bill (who hasn't seen a Pyramid since I left training there in 92... but misses them.) -- bpechter@monmouth.com | Microsoft: Where do you want to go today? | Linux: Where do you want to go tomorrow? | BSD: Are you guys coming, or what? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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