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Article #53

Is your NeXT secretly running BSD ? (was: PGP v2.1 and NeXT)

#53
From: Carl Edman
Date: Sun, 13 Dec 1992 18:42
22 lines
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In article <Q3CVBV64@cc.swarthmore.edu> eoliver@ralph.cs.haverford.edu (Erik Oliver) writes:
   And, I still stand by my claim that the NeXT is a Mach machine, but I
   can see how my statement was misinterptreted.  I agree that the NeXT,
   has BSD interfaces and BSD programs, not SysV programs and SysV
   interfaces.  But, at the core it is a Mach Kernel which is very
   different in its features and design than just saying BSD.

Even if technically NeXT is not running "real" BSD, for all practical
purposes the NeXT OS is as compatible with machines running "pure" BSD
as those machines are among themselves. This includes most areas of
the kernel which a kernel driver would be interested in.

If you don't believe me go and disassemble /mach with otool and
compare kernel functions with the functions of the same name (dead
give away) eg. in the kernel source for the BSD networking release II.
Clearly the former was compiled from at most slightly different
versions of the later (and frequently not even that). While there are
some minor unpleasant surprises, NeXT could in good faith market its
machines as running BSD. (BTW, I hope that disassembling the kernel
image is legal - if it isn't I've never done it).

        Carl Edman
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Message-ID: <CEDMAN.92Dec13134222@capitalist.nts.uci.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!ornl!rsg1.er.usgs.gov!darwin.sura.net!news.udel.edu!udel!princeton!nimaster.princeton.edu!cedman
References: <Q7BVBH1S@cc.swarthmore.edu> <WARLORD.92Dec12021232@deathtongue.mit.edu> <rich.724150542@pencil> <Q3CVBV64@cc.swarthmore.edu>

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From: cedman@princeton.edu (Carl Edman)
Subject: Is your NeXT secretly running BSD ? (was: PGP v2.1 and NeXT)
In-Reply-To: eoliver@ralph.cs.haverford.edu's message of Sat, 12 Dec 1992 17:13:56 GMT
To: eoliver@ralph.cs.haverford.edu (Erik Oliver)
Message-ID: <CEDMAN.92Dec13134222@capitalist.nts.uci.edu>
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References: <Q7BVBH1S@cc.swarthmore.edu> <WARLORD.92Dec12021232@deathtongue.mit.edu>
 <rich.724150542@pencil> <Q3CVBV64@cc.swarthmore.edu>
Date: Sun, 13 Dec 1992 18:42:22 GMT
Lines: 22