One of the more strongly discussed bits of news over the last week is the
has bought CUPS (the Common Unix Printing system) and hired Michael Sweet,
the project's primary developer. Indeed, this deal happened back in
February; it just took a little while for the people involved to get around
to telling the
rest of the world about it. There is a great deal of concern over what
this deal might mean, though most of it is probably unnecessary. Still,
there are some lessons to be learned here.
CUPS is an important part of our core infrastructure. Those of us who
can think back to the days of trying to create lpr input and output filters
to make a specific printer work can only be thankful that CUPS came along.
It could easily be said that lpr lasted at least ten years longer than it
should have, but, over that time, there were no real attempts to create a
viable alternative. Projects like LPRng were mostly trying to create a
slightly better version of the same thing. Then, there was the print
system which Sun inflicted on users of early Solaris releases (who, as your
editor can attest, were already suffering enough as it was); replacing that system
with some version of lpr was a common thing to do. It took CUPS to
implement contemporary printing protocols, support current hardware, and
generally make the life of printer administrators easier - though, as any
administrator who has lost a day to an obscure printer problem will say,
things could get a lot better yet.
CUPS has always been a corporate-owned free software project, meaning that
it carries all of the potential problems that any other such project has.
When a single company owns a project it can strongly control its
development direction, take the code private, grant license exemptions at
will, abruptly sell the code to somebody else, and so on. Many companies
which own projects do many of these things. Dealing with corporations has
its risks; it has often been said that the corporate personality is best
compared to that of a schizophrenic adolescent. Even so, such
relationships have worked out well for the free software community with
very few exceptions.
In this case, the ownership of CUPS has been passed from Easy Software
Products (ESP) to Apple. Since contributors to CUPS are required to assign
the copyrights to their work, ESP was entirely within its rights to make
this sale. There are few constraints on what Apple can do with this
externally-contributed code in the future; if it chooses, the company could
certainly treat the code in ways that the original authors would not like.
This risk is inherent in the transfer of copyrights; any free software
developer who is contemplating signing a copyright transfer agreement
should always think hard about who the receiving party is and what they
could do in the future. The usual rule for dealing with companies - assume
the person you negotiated the deal with will be immediately replaced by
somebody who hates you - applies in this sort of situation.
The worst thing that Apple can do, in any case, is to take future releases
of CUPS private. The current, GPL-licensed releases will remain available
and free. Should this happen, the community will have to pick up from the
last free version and create a fork; it certainly would not be the first
time such an action proved to be necessary. For now, though, the
announcement of the sale says "CUPS will still be released under the
existing GPL2/LGPL2 licensing terms, and I [Mr. Sweet] will continue to
develop and support CUPS at Apple." Given that certain aspects of
CUPS development - supporting hundreds of printers, for example - are best
done in the community setting, it is not hard to believe that this state of
affairs could continue indefinitely.
Apple just might create enhanced versions of CUPS for its own operating
system or as a commercial product. The company has already published a GPL exception
policy allowing proprietary derived products to be made from CUPS - as
long as they are distributed exclusively for Apple's operating systems. So
Apple's version of CUPS might have shinier widgets or a few more printer
drivers. Not the best of situations, but it is not all that different from
the rights Sun gives itself with the OpenOffice.org code base.
OpenOffice.org lacks features, fonts, and clip art found in StarOffice, but
few OpenOffice.org users have complained that they felt cheated. Companies
like MySQL make a nice living selling GPL exceptions to GPL-licensed code,
including code contributed by outsiders.
The real threat, perhaps, is that Mr. Sweet will find himself carrying a
lot of Apple-specific responsibilities (his statement in the sale
announcement carefully did not say how much he would continue
working on CUPS) and that the rate of outside contributions might slow as
developers worry about what Apple might do. That could significantly slow
the rate at which CUPS moves forward, to the community's cost.
One other potential problem is the CUPS
trademark policy which has been announced by Apple. It requires
permission to use the CUPS name with any derived product; a distributor who
applies any patches at all, even security fixes, would be affected by this
policy. The good news here is that, if this policy becomes a problem, the
name of the print system could be changed to "mugs" or some such and few
users would even notice.
On the other hand, what this deal might do is bring more resources to the
development of CUPS and contributions from a company which, for all its
faults, is known to pay a great deal of attention to the end user's
experience. Development could speed up and head in directions which make
CUPS easier to use than it is now. That would be an outcome which would be
hard to complain about.
Comments (24 posted)
The free software community is truly global in scope - we are all over the
world. A casual visitor might be forgiven for thinking otherwise, though:
the people found on our mailing lists and in our code repositories are, to
a great extent, based in Europe or North America. There is no shortage of
talented developers elsewhere, but they are hard to see; they do not
participate in our community at anywhere near the same level. We are
clearly weaker as a result.
One attempt to improve this situation can be found in the Linux Foundation
Japan Symposium, held a few times each year in Tokyo. This event was
started by OSDL, and is being continued by the Linux Foundation. The idea
is to bring a few community developers over for a couple of days and have
them talk with Japanese developers about what the community is up to and
how they can be a part of it. Your editor was lucky enough to be invited
to the July meeting where, between encounters with sushi, sake, and
Japanese beer, he was able to get some interesting work done.
First, though, was an encounter with the Yokohama Linux Users Group, which
had invited your editor to come talk seeing as he was in the neighborhood anyway.
YLUG meetings, as it turns out, look much like LUG meetings just about
anywhere: a couple dozen or so technical guys show up to hear somebody talk
about free software. The beer and dinner (and more beer) gathering afterward
was special, though; if more user groups included that sort of event,
attendance at meetings would doubtless go up.
The symposium itself began with presentations from your editor and Paul
Menage, author of the process
containers patch. One of the important features of this event is that
it includes simultaneous translators; said translators were somewhat
dismayed by your editor's habit of changing his talks (and slides) right up
to the point where the laptop gets plugged in at the podium. Their
presence is important, though: it allows attendees to follow the talks
without having to struggle with a foreign language; they can also ask
questions in Japanese and still have the presenters understand them.
As it happens, language issues, while not on the formal agenda, were a big
issue at this event. It is easy fall into the trap of believing that
anybody who is sufficiently well educated to be part of our development
community will, naturally, have learned the English language along the
way. The truth of the matter is that there are many languages one could
invest time in learning, English is a hard language (especially for those
whose native language is far removed from English), and that many people
who might have studied English for years have never really had a chance to
use it enough to become truly proficient. English really is an obstacle
for many potential contributors to our community. It slows down many
developers, makes others afraid to participate in public forums, and blocks
One step which is being taken to improve this situation is the translation
of a number of core kernel
development documents into Japanese. The documents of interest are
primarily process-oriented - those which tell prospective developers how
the community works and how to get patches accepted. Translation of
serious technical documentation would require quite a bit more work and
would be hard to keep up to date, so that is less likely to happen.
Japanese versions of the documentation seem unlikely to go into the kernel
repository itself, so they will have to be hosted elsewhere; they should,
in any case, provide a useful resource for Japanese developers hoping to
begin with the kernel.
The translators got to work in the opposite direction for a while as
Akinobu Mita discussed his work on the fault injection framework. At
any event designed to increase community involvement it is important to
highlight the efforts of local people who have been successful; Mita-san's work,
which makes it possible to find problems in difficult-to-test error
recovery paths, is an important contribution to the kernel development
toolkit. He has, recently, been posting fixes to a long series of bugs
found through the use of fault injection, making the kernel more stable for
The afternoon included a panel session which, among other things, covered
the kernel development process.
One of the key points in your editor's talk on that
process is that code must be posted early; if a company insists that code
pass through all of its internal quality assurance processes before being
submitted, it is likely to post code which is in need of major changes. It
turns out that this can be a problem with Japanese companies; one developer
talked about "stone-headed managers" who are deathly afraid that somebody
will post something which embarrasses or shames the company. Strange as it
seems, the stone-headed manager problem is not confined to Japan; there is
little to be done except to continue to try to educate those managers - or
wait until they get promoted to a level where they are no longer a problem.
The second day consisted of smaller sessions where developers from Linux
Foundation member companies could talk about their work and get questions
answered. Fault injection was on the agenda again, as were various
virtualization topics and the translation issue. Closing statements were
made, and the event shut down until next time - scheduled for November.
The key to building a community and keeping it together is good
communication. By bringing in community developers, the Japan Symposium
certainly succeeds in raising the level of communication with the Japanese
community. There is no better way to learn about how a community works
than to talk with those who are in the middle of it. This series of events
might just be part of why contributions from Japan appear to be on the
rise. A less obvious but equally important point is this: communication
goes both ways. Any speaker who attends this event can only go away
smarter, having learned something about how the wider world sees free
software. That, too, can only be a good thing.
Comments (31 posted)
IBM's recent patent pledge
significantly lowers the bar for using their patents to implement software
standards. Rather than specifying particular patents, IBM chose more than
150 different standards for interoperability, pledging not to assert any
of their patents that are required to implement the standards. Along with
the carrot of that pledge, there is also an implied stick for companies that
might consider litigating over their own patents that are required to
produce the standard.
Software patents are generally problematic, but those which encumber
technology standards can be especially so. When companies come together to
form standards bodies, they have often agreed that implementations of the
standard would be able to license any patents required, under so-called reasonable
and non-discriminatory (RAND) terms. "Reasonable" is in the eye of the
beholder, of course, and RAND terms have been used to lock out smaller
companies from implementing patented standards along the way. Free and
open source implementations are usually locked out, because "reasonable"
terms almost always include royalties. Thus, RAND terms are usually
discriminatory against free software.
This has led some organizations,
notably the World Wide Web Consortium (w3c), to move to an agreement that
patents required to implement their standards be licensed on a royalty-free
basis. This simplifies things, but requires some amount of bureaucracy as
standards participants need to list relevant patents and create documents
that state the nature of the royalty-free license.
IBM's move circumvents all
of that, by pledging not to assert patent claims against any
implementation of the listed standards. The pledge not only covers
free implementations, but competitive, commercial, closed source versions
as well. The patents themselves do not need to be researched or listed as
the pledge covers any that IBM has. It should be noted that this
only applies to implementing the standards listed; IBM is not giving carte
blanche to use their patented technology.
The only caveat is that IBM will revoke the pledge for any
implementor who asserts patent claims on a covered implementation - against
IBM or any other party. For any of the standards listed, IBM is
thus creating a "patent shield" for anyone who plays fairly, with the
implication that unfair play - in the form of patent attacks - may be met
with similar attacks from the rather extensive IBM patent portfolio.
Because it is a pledge - not a license or agreement - projects or
organizations that want to be covered by it need do nothing. There is no
paperwork to file or license text to comply with. They will need to
refrain from engaging their patent lawyers to attack others implementing
the standards; this should be a constraint that most free software projects
can live with. It is rather refreshing to see a company make a
pledge that could plausibly reduce the amount of billable lawyer time
required by technology companies. Patent lawyers may not agree, of course.
The list of standards that are covered by the pledge is an impressive array
of technologies, mostly web standards along with OASIS document format
standards. The FAQ
accompanying the pledge states that IBM will be evaluating additional
standards for inclusion in the list. They clearly believe widely
implemented standards are good for their customers:
IBM is making this Pledge to encourage broad adoption of open
specifications for software interoperability. Broad implementation of these
specifications can dramatically improve our customers' ability to
communicate data within and between their enterprises.
There is clearly a public relations aspect to this pledge, but one gets the
sense that IBM truly does want to simplify the software patent landscape.
They have, perhaps, the largest patent portfolio in the world, but they
can also see the mess that software patents, especially patent trolls, are
causing. If other companies make similar pledges, definite progress will
have been made, at least for interoperability. Since it appears that software
patents will be with us for a long time to come, at least in the US, any
step forward should be cause for at least a bit of celebration.
Comments (21 posted)
Page editor: Jonathan Corbet
Inside this week's LWN.net Weekly Edition
- Security: SE-PostgreSQL uses SELinux for database security; New vulnerabilities in LedgerSMB, flash-plugin, firefox, mysql...
- Kernel: Merged for 2.6.23; USB device authorization; Another approach to software suspend.
- Distributions: A new system log daemon for Fedora; Ark Linux 2007.1-rc1; openSUSE gets a new manager; Smolt, Open Invitation; Ubuntu Server: time to get on board; Gobuntu
- Development: GSoC: Student Tackles Wine Direct3D 10 Support,
openMosix shutting down, curl-loader launched, PHP 4 end of life,
new versions of Rivendell, MySQL Community Server, phpPgAdmin,
Linbox Directory Server, CUPS, PosteRazor, Sussen, DataparkSearch,
Plone, AlsaPlayer, QjackCtl, Wavebreaker, GnuCash, Cyphesis, Wine,
Thunderbird, LoopCenter, Qsynth, eSpeak, Firefox, GraphMonkey, IcedTea,
Multi Stream Editor, OProfile.
- Press: Office OpenXML converter hoax, OLPC and Intel become friends, Finding a Job
at LinuxWorld, LPI LinuxWorld events, SCO case roundup, CUPS Purchased by
Apple, Microsoft disses GPLv3, Benjamin Mako Hill on FSF goals, Italian
parliament plans switch to Linux, SugarCRM license issues, interviews with
Jeremy Allison, Matthias Kretz, Sebastian Kügler, Kai Staats and Irving
Wladawsky-Berger, performance tuning, Foleo review, more games on Feisty.
- Announcements: Threatened EU open standards, Mobile and Internet Linux Project, Veritas
certified on Oracle Linux, Open Source CMS Award, SourceForge project contest,
real-time Linux Workshop cfp, ENOS 2007, Florida Linux Show, KVM Forum,
Mandriva keys for GUADEC, summit on software freedom, LinuxWorld
virtualization track, LinuxExpo .Org Village, OSCON Executive Briefing,
X Developers' Summit.