14 Jan
1999
14 Jan
'99
10:50 p.m.
Dear PUPS/TUHS members,
I have just finished SCCS-reconstructing /usr/src/sys. Amazingly (and to CSRG's
credit) the history has been preserved very well, and I have SCCS-recostructed
almost every file in the kernel. There are only a few lost SCCS files. For the
list see:
http://minnie.cs.adfa.edu.au/Quasijarus/sccs.html
If you know anything about these files, please contact me ASAP!
Also when I SCCS-reconstructed the /usr/src/sys/tahoe* subdirs, I had to take a
step back. In the currently shipping release, 4.3BSD-Quasijarus0, these subdirs
are identical to the ones on the 4.3BSD-Tahoe+HCX-9 tape. However, in the
current master source tree they have been stepped back to the original
4.3BSD-Tahoe tape. For the explanation of this decision, see:
http://minnie.cs.adfa.edu.au/Quasijarus/arch.html
Sincerely,
Michael Sokolov
Cellular phone: 216-217-2579
ARPA Internet SMTP mail: mxs46(a)k2.scl.cwru.edu
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From Warren Toomey <wkt(a)henry.cs.adfa.edu.au> Fri
Jan 15 13:51:04 1999
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From: Warren Toomey <wkt(a)henry.cs.adfa.edu.au>
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Subject: Success in Compiling Nsys Kernel
To: pups(a)minnie.cs.adfa.oz.au (Unix Heritage Society)
Date: Fri, 15 Jan 1999 14:51:04 +1100 (EST)
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All,
After several days of frustration and enlightenment, I have been
able to compile and boot the `nsys' kernel source code on top of a 5th
Edition RK05 root filesystem.
The `nsys' kernel code corresponds to a time around the 3rd Edition of UNIX,
i.e. Jan 1973. Dennis Ritchie donated this to the PUPS Archive a few days ago.
I have placed the modifications to `nsys', plus some documentation, in the
PUPS Archive in Distributions/research/Dennis_v3.
Cheers all,
Warren
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From Warren Toomey <wkt(a)henry.cs.adfa.edu.au> Fri
Jan 15 15:20:12 1999
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From: Warren Toomey <wkt(a)henry.cs.adfa.edu.au>
Message-Id: <199901150520.QAA22113(a)henry.cs.adfa.edu.au>
Subject: Re: Success in Compiling Nsys Kernel
In-Reply-To: <01be4045$e3b28080$f2681081(a)collinse-home.tyson.com> from Efton Collins
at "Jan 14, 1999 11: 8:35 pm"
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Date: Fri, 15 Jan 1999 16:20:12 +1100 (EST)
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In article by Efton Collins:
I wonder how long it has been since that version of
the kernel ran? Could be
25 years. Surely that will now be the earliest bootable kernel bar none. It
must give Ken and Dennis a smile.
It is nice to see such interesting things continue to find their way into
the archive. With the help of so many of the pioneers PUPS is fulfilling its
charter very well indeed.
E-
Hi Efton. I had been keeping Dennis informed of my progress, and a few
days ago he passed on some email from Bob Keys:
[Dennis wrote:]
Keys said (when I mentioned your tries)
Ohhh, neato! Let us keep fingers crossed, knock on
wood 3 times,
cow-tow as appropriate, rub the rabbit's foot, throw salt before
the sumo ring, .... and anything else?.....(:+}}....
Dennis then went on to suggest some debugging ideas, when I was stuck:
Astonishing. When booting it might be best to start
with an init that just does
open(something);
open(something);
write(1, "Hello\n", 6);
It might even be appropriate to try first with just abort();
to see if /etc/init can be read,
He must be out today, because I haven't got a reply back from my email
indicating success.
The `nsys' files were dated Jan 22, 1973. I definitely wanted to get the
kernel working by Jan 22, 1999 so that it was only 25 years ago, not 26!
I've also made some notes about the differences between `nsys' and V5,
attached below. Thanks for your encouraging email.
Cheers,
Warren
Differences in available syscalls between `nsys' and V5.
========================================================
Syscalls in `nsys' but not in V5:
---------------------------------
1, &quit, /* 26 = quit */
1, &intr, /* 27 = intr */
1, &cemt, /* 29 = cemt */
1, &ilgins, /* 33 = ilgins */
1, &fpe, /* 40 = fpe */
These deliver signals QUIT, INTR, EMT, INS or FPE
to the pid in arg0. Any user can send these signals.
0, &prproc /* 63 = special */
For each of the 50 entries in the proc array, if there is
a valid process entry there, print the array index and the
following fields from the proc structure:
p_stat, p_flag, p_pid, p_ppid,
p_addr, p_size, p_wchan, p_textp
Syscalls in V5 but not in `nsys':
---------------------------------
0, &getpid, /* 20 = getpid */
1, &smdate, /* 30 = smdate */
0, &nice, /* 34 = nice */
0, &pipe, /* 42 = pipe */ !!!
4, &profil, /* 44 = prof */
Other Differences
-----------------
/* 21 = mount */ has 2 arguments in `nsys', 3 in V5
/* 37 = kill */ has 0 arguments in `nsys', 1 in V5