[Unix-jun72] Early UNIX: papers & Usenix
M. Warner Losh
imp at bsdimp.com
Sat Apr 11 03:21:35 AEST 2009
In message: <20090410162319.GB12970 at mercury.ccil.org>
John Cowan <cowan at ccil.org> writes:
: Warren Toomey scripsit:
: > Here is a very early draft: http://minnie.tuhs.org/Z/usendraft.pdf.
: > Lots of typos etc.
: Thanks; fascinating!
: Do the Net-2-derived BSDs (including Darwin) really count as Unix-derived?
: I thought they were fairly free of AT&T code now, other than headers and
: the like. Conceptually, of course, they are Unix-derived, but then so
: is Linux.
There's 24 files that have AT&T copyright notice on them that are
still present in the code. And there's dozens of files in SYS V that
are bsd-derived that now have the proper UCB copyright notice. The
link to Unix is direct and explicit in the 4.4-lite derived BSDs,
unlike Linux, which has no AT&T code to speak of in it. Also,
technically speaking, all the BSDs (including Darwin) are 4.4-lite
derived these days, not net-2 derived, since all the projects switched
to 4.4-lite as apart of the ucb/at&t settlement.
See for example from FreeBSD:
* Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
is found in: init_main.c kern_acct.c kern_clock.c kern_descrip.c
kern_exit.c kern_fork.c kern_prot.c kern_resource.c kern_shutdown.c
kern_sig.c kern_subr.c kern_synch.c kern_timeout.c sched_4bsd.c
subr_param.c subr_prf.c sys_generic.c tty_info.c vfs_export.c
vfs_lookup.c vfs_mount.c vfs_subr.c vfs_syscalls.c vfs_vnops.c
All these files are explicitly OK based on the settlement of the UCB
: It would be snazzy to restore the classical typography of Unix as
: U<small>NIX</small> in your paper.
That would be cool.
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