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bostic
From: bos...@VANGOGH.CS.BERKELEY.EDU (Keith Bostic)
Newsgroups: comp.bugs.4bsd.ucb-fixes
Subject: V1.97 (4.4BSD-Alpha Release)
Message-ID: <9209032321.AA17257@vangogh.CS.Berkeley.EDU>
Date: 3 Sep 92 23:21:46 GMT
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Subject: 4.4BSD-Alpha Release
We would like to announce the availability of the 4.4BSD-Alpha
distribution. The attached is the cover letter from the
information packet which has been sent to 4BSD licensees. To
request an order form, please contact our distribution office
by phone at 415-642-7780, by email at bsd-d...@cs.berkeley.edu,
or by U.S. Mail at:
CSRG
Department of EECS
University of California
Berkeley, CA 94720
Kirk McKusick
Keith Bostic
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
July 7, 1992
Dear Colleague:
We are happy to send you information about our June
1992 release of 4.4BSD-alpha. This release represents our
expectations for the final interfaces that will be present
in 4.4BSD. Our goal in making this release available is to
get feedback on any problems in the design or implementation
of the new facilities, and to allow adventurous sites to
gain experience with the new interfaces in 4.4BSD.
This distribution is NOT intended to be used on produc-
tion systems; nor is it intended for sites without enough
local expertise to find and fix any problems that are
encountered. It is intended to be used to provide an
advance look at some of the facilities and interfaces that
we will be distributing in 4.4BSD. We are interested in
getting feedback on the problems that you find and also any
compatibility problems that you encounter in converting your
applications to run on this release. While we hope that the
interfaces in this release will not change before the final
release of 4.4BSD, we will make changes that we feel are
necessary to fix problems that arise during the alpha
release period (at least in part based on feedback from this
test group). Where possible, we will minimize changes that
will break applications ported to this release. The code in
this distribution may be redistributed and used in released
products. However, you are strongly encouraged to upgrade
any code that you use from this distribution to the
similarly-licensed distribution of the 4.4BSD code within
one year of its release.
Only limited support can be provided by our group.
Specifically, we cannot provide help with installation of
this software on other systems, although we are, of course,
interested in hearing of problems that you encounter.
We are planning on releasing two versions of the
software, 4.4BSD-Encumbered and 4.4BSD-Lite. The 4.4BSD-
Encumbered distribution is available only to sites with
UNIX/32V, System III, or System V source licenses with
USL/AT&T. The 4.4BSD-Encumbered distribution is a complete
distribution in the style of 4.3BSD and contains the com-
plete source for the Berkeley Distribution.
The 4.4BSD-Lite distribution will be a distribution
that is copyrighted by the University of California and oth-
ers, but may be freely redistributed. It will be available
to anyone and requires no previous license, either from
USL/AT&T or The Regents of the University of California.
Its license agreement and content will be similar to that of
the two BSD Networking Releases. The 4.4BSD-Lite distribu-
tion will contain only a few additional programs and no
additional kernel files from the Second Networking release
done in June 1991. However, it will contain support for
additional architectures and will have many bug fixes and
performance enhancements. The distribution will include
both software developed at Berkeley and also much of
software contributed by authors outside Berkeley.
Only the 4.4BSD-Encumbered distribution is available at
this time. The 4.4BSD-Lite distribution is not available at
this time; we will send out a mailing to notify you when it
is available.
The enclosed information is designed to serve two pur-
poses. The first purpose is to acquaint you with the
details of our distribution so you can decide whether you
would like to receive it. The second purpose is to tell you
how to obtain our distribution.
What is 4.4BSD?
This software distribution is provided on one 6250bpi
1/2'' 9-track tape or one 8mm Exabyte cassette only. The
4.4BSD-Encumbered distribution contains complete source as
well as binaries for the HP9000/300 series of workstations.
The 4.4BSD-Lite distribution will contain only freely redis-
tributable sources. As the sources do not comprise a com-
plete system, no binaries will be included.
The architectures that are supported include:
+ HP 9000/300 68000-based workstations
+ Intel 386/486-based machines (ISA/AT or EISA bus only)
+ Sony News MIPS-based workstations
+ Omron Luna 68000-based workstations
+ DECstation 3100 and 5000 MIPS-based workstations
+ Sparcstation I & II SPARC-based workstations
The distribution does not include the machine support for
the Tahoe and VAX architectures found in previous BSD dis-
tributions. Our primary development is on the HP9000/300
series machines. The other architectures are being
developed and supported by people outside the university.
Consequently, we are not able to directly test or maintain
these other architectures, so cannot comment on their
robustness, reliability, or completeness.
The major new facilities available in the 4.4BSD
release are a new virtual memory system, a log-structured
filesystem, enhancement of the local filesystems to support
files and filesystems that are up to 2^63 bytes in size, the
addition of ISO/OSI networking support, a freely redistri-
butable implementation of NFS, and the conversion to and
addition of the IEEE Std1003.1 (``POSIX'') facilities and
many of the IEEE Std1003.2 facilities. In addition, many
new utilities and additions to the C library are present as
well. The kernel sources have been reorganized to collect
all machine-dependent files for each architecture under one
directory, and most of the machine-independent code is now
free of code conditional on specific machines. The user
structure and process structure have been reorganized to
eliminate the statically-mapped user structure and to make
most of the process resources shareable by multiple
processes. The system and include files have been converted
to be compatible with ANSI C, including function prototypes
for most of the exported functions. There are numerous
other changes throughout the system.
The new virtual memory implementation is derived from
the MACH operating system developed at Carnegie-Mellon, and
was ported to the BSD kernel at the University of Utah. The
MACH virtual memory system call interface has been replaced
with the ``mmap''-based interface described in the ``Berke-
ley Software Architecture Manual'' (see UNIX Programmer's
Manual, Supplementary Documents, PS1:6). The interface is
similar to the interfaces shipped by several commercial ven-
dors such as Sun, Convex Computer Corp. and USL/AT&T. The
integration of the new virtual memory is functionally com-
plete, but still has serious performance problems under
heavy memory load. The internal kernel interfaces have not
yet been completed and the memory pool and buffer cache have
not yet been merged. Some of these changes are expected
before the release of 4.4BSD.
The ISO/OSI Networking consists of a kernel implementa-
tion of transport class 4 (TP-4), connectionless networking
protocol (CLNP), and 802.3-based link-level support
(hardware-compatible with Ethernet*). We also include sup-
port for ISO Connection-Oriented Network Service, X.25, TP-
0. The session and presentation layers are provided outside
the kernel by the ISO development environment (ISODE).
Included in this development environment are file transfer
and management (FTAM), virtual terminals (VT), a directory
services implementation (X.500), and miscellaneous other
utilities.
A new virtual filesystem interface has been added to
the kernel to support multiple filesystems. In comparison
with other interfaces, the Berkeley interface has been
structured for more efficient support of filesystems that
maintain state (such as the local filesystem). The inter-
face has been extended with support for stackable filesys-
tems done at UCLA. These extensions allow for filesystems
to be layered on top of each other and allow new vnode
operations to be added without requiring changes to existing
filesystem implementations.
In addition to the local ``fast filesystem'', we have
added an implementation of the network filesystem (NFS) that
fully interoperates with the NFS shipped by Sun and its
licensees. Because our NFS implementation was implemented
using only the publicly available NFS specification, it does
not require a license from Sun to use in source or binary
form. By default it runs over UDP to be compatible with
Sun's implementation. However, it can be configured on a
per-mount basis to run over TCP. Using TCP allows it to be
used quickly and efficiently through gateways and over
long-haul networks. Using an extended protocol, it supports
Leases to allow a limited callback mechanism that greatly
reduces the network traffic necessary to maintain cache con-
sistency between the server and its clients.
A new log-structured filesystem has been added that
provides near disk-speed output and fast crash recovery. It
is still experimental in the alpha release, though we hope
to have enough experience with it to recommend it for pro-
duction use by the time of the final 4.4BSD release. We
have also added a memory-based filesystem that runs in page-
able memory, allowing large temporary filesystems without
requiring dedicated physical memory.
The quota system has been rewritten to support both
user and group quotas (simultaneously if desired). Quota
expiration is based on time rather than the previous metric
of number of logins over quota. This change makes quotas
more useful on fileservers onto which users seldom login.
The 4.4BSD distribution contains most of the interfaces
specified in the IEEE Std1003.1 system interface standard.
The biggest area of change is a new terminal driver. The
terminal driver is similar to the System V terminal driver
with the addition of the necessary extensions to get the
functionality previously available in the 4.3BSD terminal
driver. 4.4BSD also adds the IEEE Std1003.1 job control
interface, which is similar to the 4.3BSD job control inter-
face, but adds a security model that was missing in the
4.3BSD job control implementation. Other additions include
IEEE Std1003.1 signals, FIFOs, byte-range file locking, and
saved user and group identifiers.
There are several new tools and utilities included in
this release. A new version of make allows much-simplified
makefiles for the system software and allows compilation for
multiple architectures from the same source tree (which may
be mounted read-only). Notable additions to the libraries
include functions to traverse a filesystem hierarchy, data-
base interfaces to btree and hashing functions, a new, fast
implementation of stdio and a radix sort function. The
additions to the utility suite include greatly enhanced ver-
sions of programs that display system status information,
implementations of various traditional tools described in
the IEEE Std1003.2 standard, and many others.
We have been tracking the IEEE Std1003.2 shell and
utility work and have included prototypes of many of the
proposed utilities. Because most of the traditional utili-
ties have been replaced with implementations conformant to
the POSIX standards, you should realize that the utility
software may not be as stable, reliable or well documented
as in traditional Berkeley releases. In particular, almost
the entire manual suite has been rewritten to be freely
redistributable and, in many instances, it does not
correctly reflect the current state of the software. It is
also worth noting that, in rewriting this software, we have
generally been rewarded with significant performance
improvements. Most of the libraries and header files have
been converted to be compliant with ANSI C. The default
compiler (gcc) is a superset of ANSI C, but supports tradi-
tional C as a command-line option. The system libraries and
utilities all compile with either ANSI or traditional C.
Work has also progressed in several other areas.
Several important enhancements have been added to the TCP/IP
protocols including TCP header prediction and serial line IP
(SLIP) with header compression. The routing implementation
has been completely rewritten to use a hierarchical routing
tree with a mask per route to support the arbitrary levels
of routing found in the ISO protocols. The routing table
also stores and caches route characteristics to speed the
adaptation of the throughput and congestion avoidance algo-
rithms.
The Kerberos (version 4) authentication software has
been integrated into much of the system (including NFS) to
provide the first real network authentication on BSD.
This release includes several important structural ker-
nel changes. The kernel uses a new internal system call
convention; the use of global (``u-dot'') variables for
parameters and error returns has been eliminated, and inter-
rupted system calls no longer abort using non-local goto's
(longjmp's). A new sleep interface separates signal han-
dling from scheduling priority, returning characteristic
errors to abort or restart the current system call. This
sleep call also passes a string describing the process
state, which is used by the ps(1) program. The old sleep
interface can be used only for non-interruptible sleeps.
The sleep interface (tsleep) can be used at any priority,
but is only interruptible if the PCATCH flag is set. When
interrupted, tsleep returns EINTR or ERESTART.
Many data structures that were previously statically
allocated are now allocated dynamically. These structures
include mount entries, file entries, user open file descrip-
tors, the process entries, the vnode table, the name cache,
and the quota structures.
The End of BSD from Berkeley
As you may already have heard, the CSRG is going to go
away after the final release of 4.4BSD. For the following
reasons, clearly the CSRG cannot continue in its present
form.
Funding has become increasingly time-consuming and dif-
ficult. We are spending more and more of our time obtaining
funding, time that we would prefer to spend working on BSD.
As many of you are intimately aware, computer corporations
are actively seeking ways to reduce discretionary outlays.
Also, as UNIX vendors have developed their own research
groups, the work of the CSRG has become less necessary to
them. Finally, making BSD freely redistributable has
resulted in fewer distributions sold, as other organizations
sell our releases for less money.
Support within the University of California has
declined as BSD has become less widely used internally.
Victims of our own success, many of the features once found
only in BSD are now available from every vendor.
The system has become too large and complex for a group
of four to architect and maintain. In particular, losing
Mike Karels has made it obvious to us that the group is
below critical mass for developing and distributing a com-
plete UNIX system.
We are making the 4.4BSD-alpha distribution available
now. We will spend the summer and some part of the fall
cleaning up the release and make the final 4.4BSD release
available in the fall. When the final release happens is
mostly dependent on when our current funding runs out. At
that time we will close down the group. We would really
like to have six months to finish up 4.4BSD. The amount of
time that we get is largely a function of how many of you
purchase the alpha distribution. So, if you are planning to
get 4.4BSD when it comes out, please consider buying an
alpha distribution with an upgrade option instead. That way
your money will go to support the final 4.4BSD release.
BSD has always been a community effort, and, as a com-
munity effort, does not rely on a small group of people in
Berkeley to keep it going. BSD will not go away, but will
live on through the free software and commercial efforts of
many people. We thank you for your support over the years,
your funding, and, of course, the software you've contri-
buted to make the BSD system what it is today!
How to obtain 4.4BSD-Encumbered
To obtain 4.4BSD-Encumbered we require execution of the
Berkeley License Agreement (6/92). In addition, foreign
licensees must execute Addendum Number One for Foreign
Licensees in ordering 4.4BSD-Encumbered. The fee is
$2000.00 for 4.4BSD-Encumbered.
Because we are a research and development organization
and not a commercial organization, we make our research
results available for a small license fee. We distribute
only the whole system ``As Is'' and cannot send individual
pieces of the system. We are required by the University of
California to have a formal license arrangement with each
organization to which we distribute. All material is con-
sidered licensed material regardless of its availability
from other sources that make such material publicly avail-
able. In addition, for 4.4BSD-Encumbered, we are required
to secure a copy of the AT&T Software Agreement with your
organization and confirm it with AT&T before the software
can be shipped.
Specifically, for 4.4BSD-Encumbered, we must receive
from your organization the following material before the
distribution can be sent:
+ Two copies of the current Software Agreement between
your company or institution and AT&T (Western Electric)
that authorize you as a source licensee for UNIX/32V,
System III, or System V. Note that a complete copy of
the agreement up to the Schedule is required, not just
the cover and/or signature page. Letters authorizing
additional CPUs are not necessary in this process;
however, it is your legal responsibility to obtain an
additional CPU authorization from AT&T.
+ Two original signed and executed copies of the Berkeley
License Agreement (6/92) between your company or insti-
tution and The Regents of the University of California
along with Exhibit A properly filled out. For Foreign
licensees, there is an Addendum to the License Agree-
ment that must also be executed. The name of the
organization on the Berkeley License Agreement must be
the same as that which appears on the Software Agree-
ment with AT&T (or Western Electric). The Berkeley
License Agreement (6/92) must be signed by a duly
authorized person who holds a position that is at the
same level or a higher level of authority as that which
appears on the AT&T Software Agreement. Please have
this person's name and title typed in the available
space in addition to the signature. This license
agreement applies to all the CPUs covered by the
Software Agreement with AT&T (or Western Electric) that
you have provided. One signed copy of the Berkeley
License Agreement will be returned to you after it has
been executed by The Regents of the University of Cali-
fornia.
+ A check from a U.S. bank for $2000.00 must be received
before the distribution can be sent. Checks should be
made payable to ``The Regents of the University of Cal-
ifornia, Computer Systems Research Group.'' If you must
issue a Purchase Order, together with your prepayment,
please issue one that is blank-backed. If this is not
possible, insert and initial in the body of the Pur-
chase Order the following clause: ``The terms and con-
ditions of this Purchase Order are not accepted by The
Regents of the University of California. The revised
Berkeley License Agreement (6/92) prevails.'' Wire
transfers are strongly discouraged.
+ The attached Site Information Form completely filled
out. Your copy of the signed 4.4BSD-Encumbered License
Agreement will be sent to the person listed as the
administrative contact. The distribution itself will
be sent to the technical contact. All information is
kept confidential; it is for our use in notifying you
of important bug fixes and the availability of future
BSD distributions. Please note that we cannot ship to
post office boxes; therefore, please have the technical
contact's address supplied without use of a post office
box.
A checklist is included to aid you in assembling this
material. All the above material must be sent to:
Pauline Schwartz, Distribution Coordinator
Computer Systems Research Group
Computer Science Division, EECS
University of California
Berkeley, California 94720
Once all these items have been received and are in proper
order, the distribution will be sent to the technical
address listed on the Site Information Form. We cannot pro-
vide delivery dates. Once the material is assembled and
packaged, the distribution is shipped by commercial carrier.
Order of shipment will be based on time of arrival of the
properly completed paperwork and confirmation with AT&T if
necessary. Because of the differential in costs of shipping
outside the United States, we ask that organizations beyond
the North American continent pay the collect shipping
charges. If the destination is one where collect shipment
cannot be made by the carrier, then advance payment of the
shipping charges will be required.
The most expedient way to ensure that your full distri-
bution is sent as quickly as possible is to include in a
single package two original copies of the appropriate Berke-
ley License Agreement completed and properly signed (without
modification), two complete copies of your AT&T Software
Agreement the appropriate check properly made out to ``The
Regents of the University of California, Computer Systems
Research Group'' and a completely filled out Site Informa-
tion Form and to send this single package to the address
noted above.
Please note that if you modify the Berkeley License
Agreement, you may experience a delay of three months or
more before receiving an acceptance or denial of the
changes. We reserve the right to cancel your application if
we have not received the requested paperwork within 60 days
from the date it was sent to us.
Ordering the Upgrade to 4.4BSD
For those who would like to order the upgrade to the
present alpha release of 4.4BSD, we offer the opportunity to
prepay a fee of $400.00 for such upgrade, scheduled to be
released at year's end or soon thereafter. The advantage in
ordering the upgrade at the time of ordering the alpha
release is that there will not be additional licensing
costs.
If one wishes to order the 4.4BSD-Encumbered and
upgrade, the total fee will be $2,400.00. For those who
choose not to order the upgrade now, we will notify you when
it is available so that you may order it for whatever fee
will be set at that time.
Special Cases
University of California Sites. If you are a part of
the University of California, the following requirements
apply: To run 4.4BSD-Encumbered on any CPU, you must have a
CPU authorization under The Regents of the University of
California Software Agreement with AT&T. This can be
obtained by contacting Pam True at (510) 642-6348 in Berke-
ley Campus Materiel Management for an application. A copy of
this should be sent to us. In addition, the following items
must be sent to the Computer Systems Research Group: 1) a
letter of authorization signed by the Director or Head of
Department requesting 4.4BSD-Encumbered, stating that you
have read and understood the Berkeley License Agreement
(6/92) and that your organization will abide by it; 2) an
IOC for $2,000.00; and 3) a Site Information Form.
Government Agencies and Government Contractors.
+ The U.S. Government has a UNIX Source Software Agree-
ment with AT&T dated Sept. 1, 1975. If you are a
government agency operating under the 1975 Software
Agreement, you do not need a copy of the aforementioned
Software Agreement; instead you must send a copy of
your additional CPU authorization from AT&T. The
Berkeley License Agreement for 4.4BSD-Encumbered (6/92)
should be signed by the appropriate Contracting Off-
icer.
+ Several government agencies have acquired their own
AT&T UNIX Software Agreement. Here, we need a copy of
this Software Agreement with AT&T. The Berkeley
License Agreement (6/92) must be signed by the same
officeholder (or replacement) whose signature appears
on the Software Agreement with AT&T. The government
agency shall be identified as the Licensee in the
Berkeley License Agreement (6/92).
+ If you are a contractor of the Government and have
obtained an additional CPU authorization from AT&T for
your contract work, the Berkeley License Agreement
(6/92) must be signed by the appropriate Contracting
Officer for the contract. The contractor should
address a letter to the Contracting Officer stating
that the contractor agrees to abide by the terms and
conditions of the Berkeley License Agreement (6/92) for
4.4BSD and ask that the Contracting Officer sign the
Berkeley License Agreement (6/92) for 4.4BSD. The Con-
tracting Officer should then return the signed Berkeley
License Agreement (6/92) directly to the Computer Sys-
tems Research Group with a cover letter stating that
the contractor is hereby authorized to receive a copy
of 4.4BSD-Encumbered.
A Special Note
The procedures and rules set out in this document are
University and AT&T constraints that must be followed for
the distribution of software to be possible. The Computer
Systems Research Group has no control over these constraints
and must reject your application if material submitted is
not in order.
If You Have Read Everything and Still Need Help
If you have questions about the licensing process after
reading this letter, you may call Pauline Schwartz at (510)
642-7780, write to her, or contact her via electronic mail
at paul...@cs.berkeley.edu.
Sincerely yours,
Marshall Kirk McKusick
Research Computer Scientist
Computer Systems Research Group
_________________________
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