Virally licensed code in FreeBSD kernel

Brett Glass brett at
Sat Apr 14 15:51:31 UTC 2007

There is a huge problem in that the CDDL is "viral." It "infects"
products with which it is combined. You can read the text of the

Section 3.1 of the CDDL is the portion which is essentially equivalent
to the GPL. 

This is part of the nastiness of viral licenses.

--Brett Glass

At 07:06 AM 4/14/2007, Philipp Wuensche wrote:
>Brett Glass wrote:
>> I just read with some concern the announcement that Sun's ZFS has been
>> integrated into the FreeBSD kernel. This would mean, unfortunately, that
>> FreeBSD is now covered by the CDDL, which is a viral license similar to
>> the GPL. Has FreeBSD abandoned its longstanding practice of keeping the
>> kernel truly free?
>Maybe this blog entry brings some light:
>I don't see a problem. If you use CDDL licensed stuff like ZFS, you need
>to provide the source, thats it.

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