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Software Freedom Conservancy: Distributing Linux With ZFS Is Illegal (phoronix.com)
LichtSpektren writes: Phoronix reports that Bradley M. Kuhn and Karen M. Sandler at the Software Freedom Conservancy (SFS) have posted a blog post today arguing that Canonical's plan to distribute Ubuntu 16.04 LTS "Xenial Xerus" with support for the ZFS file system violates the Linux kernel's GPLv2 license.
On February 18, Dustin Kirkland at Canonical wrote on his blog: "We at Canonical have conducted a legal review, including discussion with the industry's leading software freedom legal counsel, of the licenses that apply to the Linux kernel and to ZFS. And in doing so, we have concluded that we are acting within the rights granted and in compliance with their terms of both of those licenses...The CDDL cannot apply to the Linux kernel because zfs.ko is a self-contained file system module — the kernel itself is quite obviously not a derivative work of this new file system. And zfs.ko, as a self-contained file system module, is clearly not a derivative work of the Linux kernel but rather quite obviously a derivative work of OpenZFS and OpenSolaris. Equivalent exceptions have existed for many years, for various other stand alone, self-contained, non-GPL kernel modules. Our conclusion is good for Ubuntu users, good for Linux, and good for all of free and open source software."
The SFS's blog post of today states: "We are sympathetic to Canonical's frustration in this desire to easily support more features for their users. However, as set out below, we have concluded that their distribution of zfs.ko violates the GPL."
On February 18, Dustin Kirkland at Canonical wrote on his blog: "We at Canonical have conducted a legal review, including discussion with the industry's leading software freedom legal counsel, of the licenses that apply to the Linux kernel and to ZFS. And in doing so, we have concluded that we are acting within the rights granted and in compliance with their terms of both of those licenses...The CDDL cannot apply to the Linux kernel because zfs.ko is a self-contained file system module — the kernel itself is quite obviously not a derivative work of this new file system. And zfs.ko, as a self-contained file system module, is clearly not a derivative work of the Linux kernel but rather quite obviously a derivative work of OpenZFS and OpenSolaris. Equivalent exceptions have existed for many years, for various other stand alone, self-contained, non-GPL kernel modules. Our conclusion is good for Ubuntu users, good for Linux, and good for all of free and open source software."
The SFS's blog post of today states: "We are sympathetic to Canonical's frustration in this desire to easily support more features for their users. However, as set out below, we have concluded that their distribution of zfs.ko violates the GPL."
As usual, it has less to do with the specific example as it has to do with precedents that may not be desirable. It seems like if you release these two things "separately", then nothing is wrong. However by including this other binary with this problematic license as part of a single distribution you are "apparently" breaking the terms of the GPLv2 which requires the distribution be under GPLv2.
Hairs can be split about what a "distrubution" is. I can add ZFS to my own system and not be wrong. Why cannot a script add ZFS to my system for me during install? When does it become a "distribution", given that most of us don't install from optical media anymore, and frequently download bits and pieces as we need them for our system anyway. I'm trying to see the evil here that this narrowly avoids, but I don't yet...provided the terms of the various pieces of software are still met on their own.
It's not like Stallman makes no sense. Imagine 2 societies. Society A in which you are free to enter into any contract want, and society B which is exactly like Society A except that contracts that involve slavery are not legal. Which society has more freedom?
Society A provides the additional freedom to to sell oneself into slavery, so society A is more free.
Society B lacks the freedom to to sell oneself into slavery, so society B is more free.
Which of these statements is true? It's just a pointless semantic debate that depends on your personal definition of a "free society". Is agreeing to use commercial software similar selling yourself into slavery? Not really, but I think it's still an appropriate analogy even if the magnitude of the consequences are not comparable.