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Date: Thu, 3 Jul 2003 12:24:20 -0400 (EDT)
From: Zhihui Zhang <bf20761@binghamton.edu>
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To: Dan Nelson <dnelson@allantgroup.com>
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cc: Sam Leffler <sam@errno.com>
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cc: Eivind Hestnes <eivind.hestnes@stabbursmoen.no>
Subject: Re: Support for XFS in FreeBSD?
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On Wed, 2 Jul 2003, Dan Nelson wrote:

> In the last episode (Jul 02), Zhihui Zhang said:
> > Suppose someone ported XFS to FreeBSD, then what liscence can you use
> > without causing any legal trouble? You must use GNU, but the interface
> > code (VFS/vnode, bio, vnode, etc.) are already under BSD liscence.  Can
> > one KLD program contain code using different liscences?
>
> Sure.  See /sys/gnu/ext2fs/ for an example, and see the COPYRIGHT.INFO
> file for an explanation of which files have what license.
>

Well, suppose one file contains algorithms, ideas, or code fragments from
both GNU and BSD liscenced source. Since BSD liscence is less restrictive,
maybe put everying under GNU is OK? But BSD people won't be happy. If GNU
protects ONLY the exact coding. Maybe a rewrite of its algorithms and
ideas can get rid of GNU?  But again, it falls within the "derived" class.

-Zhihui