Re: mea culpa on the meaning of Tivoization

Alexandre Oliva
2007-06-18T19:11:16Z

On Jun 17, 2007, Daniel Hazelton <dhazelton@enter.net> wrote:

> On Sunday 17 June 2007 19:11:13 Alexandre Oliva wrote:

>> Let me start with an example: I bought a wireless router some time
>> ago, and it had a GNU+Linux distribution installed in it. No source
>> code or written offer for source code, though.

> Just want to point out that, when I read this, my reaction was
> "But... That is a direct violation of the GPLv2. No specific reading
> of the license needed."

Yes. Anyone feels like enforcing the GPLv2 in Brazil? I can even
recommend lawyers that speak English reasonably well and are somewhat
familiar with the GPL, and I've already tracked the distribution chain
back to the initial infringer. Harald is aware of the issue, but
AFAIK he's decided not to pursue that yet.

>> Now, if I called the vendor next day and asked for the source code,
>> and they responded "sorry, I can't give you that. I threw it all
>> away, such that I wouldn't be able to give it to you.", they would
>> still be disrespecting my freedoms, as well as the license, right?

> Yes, they would. They are distributing a modification

There's no reason to assume it's a modification. They're distributing
a copy, and that's enough.

>> So, if I called them to ask how to install and run modified versions
>> of the GPLed programs, and they responded "sorry, I can't give you
>> that. I threw it all away, such that I wouldn't be able to give it to
>> you.", they would still be disrespecting my freedoms, as well as the
>> license.

> Not even the GPLv3dd4 - because they don't have the information
> anymore either. If, however, they still retained the information -
> in any form - they would be violating the GPLv3dd4.

I'm told by the authors of GPLv3dd4 that this case is not meant to be
permitted. I suppose they're going to change the wording, or at least
the rationale for it.

> The GPLv2 doesn't make the actions described above - "how to install and
> run" - a license violation.

This is true. They didn't have any such duty, under the GPLv2.

However, if I figured that out by myself, but found that I was unable
to run a modified version because something in there checks for a hash
computed over the program I'd like to modify, and refuses to run it
because of the hash, then the hash is effectively part of the program,
and they haven't provided me with the corresponding sources of that
portion of the program.

I know you don't want that to be true, and a court might actually
decide your way some day. But until then, your claim that this is
permitted by the GPL is just as good as mine that it's not. And I
really mean "just as good", since my claim is in line with the stated
purpose of the authors of the GPL, and yours is in line with their
opinion (according to others, I don't think I've got this straight
from them) as to whether the license effectively prohibits this
practice.

> Then anyone using GPLv3'd software to drive WiFi devices, radio (HAM radio)
> networks, etc - in the US, at least - isn't allowed to do such. US Law makes
> some provisions of the GPLv3 illegal to comply with. Thanks to section 6 of
> the GPLv3 that invalidates the rights granted under the license.

Actually, this is false. Not only because of the ROM provisions in
the GPLv3, but because the law requirements aren't anywhere as strict
as the WiFi vendors who want to disrespect your freedoms want you to
believe.

> What the GPLv3 has done is take away options they might otherwise
> have had.

It doesn't. Authors can always grant these options separately if they
want to. Authors can always choose GPLv2 if they want to.

GPLv3 is an option for those who want to defend freedoms, even if they
don't share the perception that this is a moral and ethical issue. If
they're in it only for the self benefits, that's fine, GPLv3 can get
them that, even better than GPLv2 could, in spite of the short-sighted
claims to the contrary.

> If one of the goals of the FSF is to force proprietary software into
> a minority then its just done damage to that goal.

That's not the goal.

--
Alexandre Oliva http://www.lsd.ic.unicamp.br/~oliva/
FSF Latin America Board Member http://www.fsfla.org/
Red Hat Compiler Engineer aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist oliva@{lsd.ic.unicamp.br, gnu.org}