From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
To: tuhs@tuhs.org
Cc: jnc@mercury.lcs.mit.edu
Subject: [TUHS] Re: SCO's "evidence" (was: RIP Darl McBride former CEO of SCO)
Date: Tue, 5 Nov 2024 12:55:31 -0500 (EST) [thread overview]
Message-ID: <20241105175531.D180918C084@mercury.lcs.mit.edu> (raw)
> From: Warner Losh
>> On Mon, Nov 4, 2024 at 8:14PM Larry McVoy wrote:
>> The bmap implementations I saw were bit for bit identical, same code,
>> same variables, same style, same indentation. I'm 100% sure they were
>> not independent.
> They are different in 4.3BSD. They are different in 4.2BSD (but less
> different). The underlying filesystems are different on disk, so they
> routines have to be different.
That last sentence points out something important that people need to remember
in this discussion: in between 4.1 and 4.2 (technically, in 4.1B), BSD
switched to the BSD Fast File System, so I very much doubt that the low-level
(i.e. logical file block to disk block) file system code in anything after
4.1A looks much like the AT+T low-level file system code. (I have no idea how
the BSD code compares to the Linux file system code, but that's between the
Linux people, and Berkeley.)
Noel
next reply other threads:[~2024-11-05 17:55 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-05 17:55 Noel Chiappa [this message]
2024-11-05 18:52 ` ron minnich
2024-11-05 19:01 ` Warner Losh
[not found] ` <CAEoi9W66zUf8RvzEYQG7qNXN-BX6gyDejXCrHw3rk46UM_-XPg@mail.gmail.com>
2024-11-08 20:27 ` Warner Losh
[not found] ` <61F8BCE5-44C5-49D2-BEFE-B8717E3DDEA8@kdbarto.org>
[not found] ` <CANCZdfrJExbrJqp3MgE0Tp9-a=PYTeFpkULk8NnPfBTeoyLW-g@mail.gmail.com>
2024-11-08 23:18 ` [TUHS] Fwd: " Warner Losh
2024-11-09 0:40 ` [TUHS] " rob
2024-11-05 18:58 ` Warner Losh
2024-11-05 20:25 ` [TUHS] Copyrights and copying.. [was SCO's "evidence" (was: RIP Darl McBride former CEO of SCO)] Christian Hopps
2024-11-05 20:35 ` [TUHS] " Warner Losh
-- strict thread matches above, loose matches on Subject: below --
2024-11-04 1:17 [TUHS] RIP Darl McBride former CEO of SCO Will Senn
2024-11-04 2:31 ` [TUHS] " Greg 'groggy' Lehey
2024-11-04 3:34 ` Wesley Parish
2024-11-04 17:35 ` Marc Rochkind
2024-11-04 22:50 ` [TUHS] SCO's "evidence" (was: RIP Darl McBride former CEO of SCO) Greg 'groggy' Lehey
2024-11-05 0:05 ` [TUHS] " Marc Rochkind
2024-11-05 0:39 ` Warner Losh
2024-11-05 1:09 ` Larry McVoy
2024-11-05 1:32 ` ron minnich
2024-11-05 1:39 ` Warner Losh
2024-11-05 3:14 ` Larry McVoy
2024-11-05 5:00 ` Warner Losh
2024-11-05 1:35 ` Warner Losh
2024-11-05 1:54 ` Larry McVoy
2024-11-05 2:13 ` Warner Losh
2024-11-05 3:14 ` Marc Rochkind
2024-11-07 20:41 ` ron minnich
2024-11-07 20:59 ` Marc Rochkind
2024-11-08 0:03 ` Theodore Ts'o
2024-11-08 0:35 ` Warner Losh
2024-11-09 18:29 ` G. Branden Robinson
2024-11-09 20:30 ` Theodore Ts'o
2024-11-09 22:23 ` G. Branden Robinson
2024-11-10 4:27 ` Theodore Ts'o
2024-11-12 1:55 ` Kevin Bowling
2024-11-12 2:34 ` Kevin Bowling
2024-11-12 18:12 ` Marc Rochkind
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