source code licensing questions

Jonathan Chen jonc at
Mon Jul 27 11:10:10 UTC 2009

On Mon, Jul 27, 2009 at 11:58:14AM +0300, son goku wrote:

> Browsing the web about the BSD license just made me confused. Seems like to
> understand these licensing issues you must be a lawyer.

Basically the BSD licence is: do what you like, but:

	1. don't say you did it all by yourself.
	2. you can't blame us for anything.
	3. Include the COPYRIGHT notice.

> I got the following questions regarding source license:
> 1.Do I need to open the source code for my product if I use the BSD kernel
> as part of the product?


> 2.If I do some kernel changes, do I need to open those changes as well?


> 3.What about Dtrace, if I use DTrace will I need to open code that use it?

The CDDL licence seems to imply that you do.

> 4.Suppose the answer for 1-3 is no, s there any other reason why I need to
> open the code.

Only if you feel like it.

Jonathan Chen <jonc at>
                                                          Jesus saves.
                                                       Allah forgives.
                             Cthulu thinks you'd make a nice sandwich.

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