Re: Sun's ZFS and Linux

From: Tarkan Erimer
Date: Mon Nov 21 2005 - 14:44:36 EST

The whole picture is more clear now. Thanks for
this very informative reply.


On 11/21/05, Rob Landley <rob@xxxxxxxxxxx> wrote:
> On Sunday 20 November 2005 15:12, Tarkan Erimer wrote:
> > Thanks for the explanation. BTW, I wonder something: Is there any
> > possibility to give GPL an exception to include and/or link to CDDL
> > code?
> No, and Sun likes it that way.
> The GPL was the first "copyleft" style license which requires that derivative
> works be placed under exactly the same terms as the original work. If the
> terms of another code are incompatible, they cannot be exactly the same.
> (Specifically, the GPL says in section 2b, "You must cause any work that you
> distribute or publish, that in whole or in part contains or is derived from
> the Program or any part thereof, to be licensed as a whole at no charge to
> all third parties under the terms of this License." See
> ""; and
> "";.)
> Sun intentionally designed the CDDL to be incompatible with the GPL. This was
> a design goal on Sun's part.* They want to isolate themselves from the
> existing open source community, and make sure that their code cannot be used
> with the most common open source license.** Why they want to do this has
> been widely speculated about***, but the fact they want an explicit "us vs
> them, no sharing" stance is not in dispute.
> Rob
> * See or
> or plus Sun's official rationale
> at
> ** According to
> there are currently 72,823 projects on sourceforge specifying a license. Of
> those, 48050 have chosen to license their code under the GPL. That's 65.98%,
> or about 2/3 of the total. In politics, this would be flirting with a
> veto-proof majority. David Wheeler did a detailed analysis at
> *** see or or
>,1759,1754155,00.asp or
>,1895,1739000,00.asp or
> or or
> or...
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