Date: Mon, 10 Jan 2005 02:40:53 -0600 (CST) From: Scott Bennett <bennett@cs.niu.edu> To: freebsd-questions@freebsd.org, rjhjr@cox.net Subject: Re: I quit Message-ID: <200501100840.j0A8erRt005511@mp.cs.niu.edu>
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On Sun, 9 Jan 2005 20:20:29 -0500 Bob Hall <rjhjr@cox.net> wrote:
>On Sun, Jan 09, 2005 at 06:17:36PM -0600, Scott Bennett wrote:
>> On Sun, 9 Jan 2005 08:54:55 -0600 Andrew L. Gould <algould@datawok.com>
>> wrote:
>>
>> >Mac OSX is based upon FreeBSD and may have native versions of the
>>
>> Mac OSX was--and unless something has changed drastically in the last
>> few weeks, still is--based upon NextStep, another proprietary UNIX that was
>> based upon a Mach 2.4-2.5 kernel and 4.3BSD above that.
>
>>From http://developer.apple.com/unix/:
> Specifically, it is based in part on BSD 4.4 Lite. On a system
> level, many of the design decisions are made to align with
> BSD-style UNIX systems. Most libraries and utilities are from
> FreeBSD (http://www.freebsd.org/), but some are derived from
> NetBSD (http://www.netbsd.org/). For future development, Mac OS X
> has adopted FreeBSD as a reference code base for BSD technology.
> Work is ongoing to more closely synchronize all BSD tools and
> libraries with the FreeBSD-stable branch..
>
>Your statements applied to the original OSX. It has shifted to 4.4BSD,
It's difficult to imagine the 4.4BSD kernel having been used in Mac OSX.
But the remaining parts of the system make sense.
>Mach 3, and FBSD during the course of development, with lots of
The Mach 3 kernel could be used, though there would have to be a
mountain of stuff written into the servers to provide all the stuff that
the rest of the system depended upon in the earlier Mach 2.x-based kernel.
However, if that's what Apple has done, then that's great!
>contributions from Net and OpenBSD. The changes didn't happen in the
>last few weeks. They happened continuously during the system's
>development.
Thanks for the information.
Scott Bennett, Comm. ASMELG, CFIAG
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