18 Jun
2014
18 Jun
'14
10:55 p.m.
On Sun, 15 Jun 2014, Diomidis Spinellis wrote:
First, consider this widely reproduced BSD family tree
[2]. It has
4.4BSD-Encumbered derive from a line that includes Net/1, which was
freely redistributable. Wouldn't it be clearer to create two
branches, one with distributions free of AT&T code (4.3 BSD Net/1, 4.3
BSD Net/2, 4.4 BSD Lite1, 4.4 BSD Lite2) and one with full
distributions (4.4 BSD, ...)?
I don't have any preference on that.
On which side would Tahoe and Reno stand?
Tahoe included both the proprietary code and the code which could "be
freely redistributed". The same with Reno, which was also "within the
usual licensing constraints" (as it still had the proprietary code).
Also, the same tree [2] shows 4.4 BSD having as its
ancestor 4.3 BSD
Net/2, whereas another tree depicted on Wikipedia [3] has shows 4.4
BSD and 4.3 BSD Net/2 having as their ancestor 4.3 BSD Reno. What's
the correct genealogy?
Note that Net/2 was not a complete or ready-to-use system, so a better
genealogy (than those two) may be like:
4.3BSD Reno
| \
| \
| 4.3BSD NET/2
| /
| /
4.4BSD Alpha
Finally, I have a conflict with release dates.
Wikipedia gives the
following dates for Tahoe and Net/1 [4]:
4.3 BSD Tahoe June 1988
Announced in June 1988 (see admin/postings/4BSD/INDEX) but even users
outside of Berkeley reported bugs specifically against "Tahoe" source
tree as early as at least May 1987 (see admin/bugs/4.3BSD-tahoe/).
4.3 BSD Net/1 June 1989
That date is in McKusick's open sources chapter, but the "Yesterday,
Today and Tomorrow" article says Spring 1988. It was announced in
November/December 1988 (see admin/postings/4BSD/V1/73 and the
/admin/postings/4BSD/INDEX). (930108.oppose.txt also says was
distributed in 1988.) (Two Salus books also mention that it was
announced at the BSD Workshop in Nov. 1988 to be available.)
As for dates for the files, they were probably still updated even after
initially released (which you can see in other releases too).