Re: libxenvchan license (lGPLv2.1) and xen/include/public/COPYING license?

From: Ian Jackson <Ian.Jackson@eu.citrix.com>
To: Konrad Rzeszutek Wilk <konrad@kernel.org>
Cc: olaf@aepfle.de, mattjd@gmail.com, wei.liu2@citrix.com,
	lars.kurth.xen@gmail.com, andrew.cooper3@citrix.com,
	anil@recoil.org, dave.scott@citrix.com,
	marmarek@invisiblethingslab.com, roger.pau@entel.upc.edu,
	waldi@debian.org, andryuk@aero.org,
	xen-devel@lists.xenproject.org, boris.ostrovsky@oracle.com,
	dgdegra@tycho.nsa.gov
Subject: Re: libxenvchan license (lGPLv2.1) and xen/include/public/COPYING license?
Date: Tue, 7 Jun 2016 16:54:42 +0100	[thread overview]
Message-ID: <22358.60994.451787.234123@mariner.uk.xensource.com> (raw)
In-Reply-To: <20160607133630.GA8106@x230.dumpdata.com>

Konrad Rzeszutek Wilk writes ("Re: [Xen-devel] libxenvchan license (lGPLv2.1) and xen/include/public/COPYING license?"):
> On Mon, Jun 06, 2016 at 05:36:23PM -0400, Konrad Rzeszutek Wilk wrote:
> > I picked the list of people on this email from the git log on tools/misc/libvchan/
> > (albeit this is about xen/include/public/io/libxenvchan.h).
> > 
> > The problem is that the 'COPYING' file in the root directory of Xen source 
> > says:
...
> > Also it is in FreeBSD (source tree): ./sys/xen/interface/io/libxenvchan.h
> > 
> > That looks to be an oversigh. The commit that introduced the file is:
> > commit 1a16a3351ff2f2cf9f0cc0a27c89a0652eb8dfb4
> > Author: Daniel De Graaf <dgdegra@tycho.nsa.gov>
> > Date:   Thu Oct 6 19:44:40 2011 +0100
> > 
> >     libvchan: interdomain communications library
> > 
> > As such I was wondering if the folks who wrote/checked the file in
> > could weight in on what their intention was in regards to this file?

ISTM that at the very least the libxenvchan.h file should indeed be
covered by the permissive ("BSD-style") licence.

If we intend for this library to be used in the BSDs (much like
in-kernel frontends) then the whole library should have a permissive
licence.

I did
  git-log --pretty='format:%an <%ae>' xen/include/public/io/libxenvchan.h tools/libvchan | sort -u
on stating, and got this output:

  Anil Madhavapeddy <anil@recoil.org>
  Daniel De Graaf <dgdegra@tycho.nsa.gov>
  David Scott <dave.scott@citrix.com>
  Ian Campbell <ian.campbell@citrix.com>
  Ian Jackson <Ian.Jackson@eu.citrix.com>
  Jan Beulich <JBeulich@suse.com>
  Jason Andryuk <andryuk@aero.org>
  Keir Fraser <keir@xen.org>
  Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
  Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
  Matthew Daley <mattjd@gmail.com>
  Olaf Hering <olaf@aepfle.de>
  Roger Pau Monne <roger.pau@entel.upc.edu>
  Wei Liu <wei.liu2@citrix.com>

I guess the Citrix staff ought to have a common view.  Lars, do we
need to consult with management or shall we just give our consent to
libvchan being permissively-licensed ?

Ian.

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