[TUHS] BSD/v8 TCP/IP (was Shell control through external commands)

Greg 'groggy' Lehey grog at lemis.com
Mon Sep 12 17:20:52 AEST 2016


On Sunday, 11 September 2016 at 23:24:47 -0600, Warner Losh wrote:
> On Sun, Sep 11, 2016 at 10:44 PM, Greg 'groggy' Lehey <grog at lemis.com> wrote:
>> On Sunday, 11 September 2016 at 21:31:10 -0400, Norman Wilson wrote:
>>>
>>> -- Adopt 4.1c BSD kernel
>>> ...
>>>
>>> I don't think the BSD kernel when adopted had much, if any,
>>> of sockets, Berkeley's TCP/IP, McKusick's FFS; if it did,
>>> they were excised.
>>>
>>> ...
>>>
>>> TCP/IP support didn't show up until later, I think summer 1985,
>>> though it might have been a year later.
>>
>> I'm confused.  4.1c has gone down in history as the first version with
>> Internet code, and looking at the sources (from mckusick's CD set), I
>> see the network files in /sys/netinet with names very reminiscent of
>> current FreeBSD file names.  The files have timestamps between
>> November 1982 and May 1983.  Why should they have been removed?  I
>> would have thought that exactly this functionality would have been the
>> reason why you adopted 4.1c.
>>
>> Similarly, it also included FFS and (not surprisingly sockets.
>>
>> I checked further back, but unfortunately the previous version on the
>> CDs is 4.1a, and it has no kernel code.
>
> I don't think they are talking about BSD4.1a having these things,

Right, the discussion was about 4.1c.  I just wanted to confirm that
it was, in fact, the first version with TCP/IP.

> but rather Research Unix Edition 8 having these things.

Yes, that's what Norman said:

>>> if it did, they were excised.

> Bell labs didn't integrate them until later. I recall reading
> articles at the time (1983 or 1984) that they had their own notion
> of what networking to use that wasn't TCP/IP due to some perceived
> failings of TCP/IP that they fixed with their stuff.

I think the perceived "failings" were with sockets, not with TCP/IP.
That was what led to the misimplementation of STREAMS.  My real
confusion was what they really wanted from 4.1c, but I suppose it was
the VM implementation.  Can anybody comment?

Greg
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