From the libseccomp-discuss mailing list:

  On Monday, April 09, 2012 06:06:51 PM Paul Moore wrote:
  > Hello,
  >
  > It was suggested on the libseccomp announcement thread that we
  > relicense the library from GPLv2 to LGPLv2.1.  In my opinion this
  > makes sense and I recommend we relicense the library, can I have
  > your permission to relicense your contributions?
  >
  >  * LGPLv2.1
  >    -> http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html



  On Tuesday, April 10, 2012 10:07:37 AM Eric Paris wrote:
  > You have my permission to relicense to LGPL.

  On Tuesday, April 10, 2012 10:27:39 AM Ashley Lai wrote:
  > Yes, you have my permission to relicense to LGPL.

  On Tuesday, April 10, 2012 11:48:14 AM Corey Bryant wrote:
  > We (IBM) have OSSC approval now.  You have my approval to
  > relicense my contributions to LGPLv2.1.

  On Tuesday, April 10, 2012 12:57:25 PM Eduardo Otubo wrote:
  > On Tue, Apr 10, 2012 at 11:48:14AM -0400, Corey Bryant wrote:
  > > We (IBM) have OSSC approval now.  You have my approval to
  > > relicense my contributions to LGPLv2.1.
  >
  > Exactly, not a problem for me.

Signed-off-by: Paul Moore <pmoore@redhat.com>

This patch is the initial import of the libseccomp library, a library
intended for use by application developers who wish to leverage the
enhanced seccomp (mode 2) support in the Linux Kernel but who do not
want to craft their own seccomp filter code by hand.  This library will
provide a high-level API for developers which will allow them to
generate and load seccomp filter code into the kernel by specifying
which syscalls, optionally with argument values, are to be allowed or
denied by the kernel.

Needless to say, this is an initial import into the git repository so
everything is still subject to change, and the usual caveats about
untested code apply quite strongly.

This code is licensed under the GPLv2, with some portions taken from
examples provided by Will Drewry <wad@chromium.org> and copyrighted
by the Chromium OS Authors <chromium-os-dev@chromium.org> which carries
the following license (included in the associated files as well):

 "The code may be used by anyone for any purpose, and can serve as a
  starting point for developing applications using
  prctl(PR_ATTACH_SECCOMP_FILTER).
  No guarantees are provided with respect to the correctness or
  functionality of this code."

Signed-off-by: Paul Moore <pmoore@redhat.com>