Copyright for libbpf source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: libbpf
Source: https://github.com/libbpf/libbpf

Files:     *
Copyright: 2013-2015 Alexei Starovoitov 
           2015 Wang Nan 
           2015 Huawei Inc.
           2018, 2019 Facebook
           2017 Nicira, Inc.
           2019 Isovalent, Inc.
           2019 Netronome Systems, Inc.
           2003-2013 Thomas Graf 
           2018-2019 Intel Corporation.
License:   LGPL-2.1 or BSD-2-Clause

Files:     docs/conf.py
Copyright: Grant Seltzer 
License:   GPL-2.0

Files:     include/uapi/linux/bpf.h
           include/uapi/linux/bpf_common.h
           include/uapi/linux/btf.h
           include/uapi/linux/if_link.h
           include/uapi/linux/if_xdp.h
           include/uapi/linux/netlink.h
Copyright: 2011-2014 PLUMgrid, http://plumgrid.com
           2018 Facebook
           2018 Intel Corporation.
License:   GPL-2 with Linux-syscall-note exception

Files:     debian/*
Copyright: 2018 Ben Hutchings 
           2018 Hilko Bengen 
           2018 Luca Boccassi 
           2020 Sudip Mukherjee 
License:   GPL-2+

License:   GPL-2.0
 This program is free software; you can redistribute it
 and/or modify it under the terms of the GNU General Public
 License version 2 as published by the Free Software
 Foundation.
 .
 This program is distributed in the hope that it will be
 useful, but WITHOUT ANY WARRANTY; without even the implied
 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 PURPOSE.  See the GNU General Public License for more
 details.
 .
 You should have received a copy of the GNU General Public
 License along with this package; if not, write to the Free
 Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 Boston, MA 02110-1301 USA
 .
 On Debian systems, the full text of the GNU General Public
 License version 2 can be found in the file
 `/usr/share/common-licenses/GPL-2'.

License:   GPL-2+
 This package is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 .
 This package is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 .
 You should have received a copy of the GNU General Public License
 along with this program. If not, see 
 .
 On Debian systems, the complete text of the GNU General
 Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".

License:   LGPL-2.1
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation;
 version 2.1 of the License (not later!)
 .
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 .
 You should have received a copy of the GNU Lesser General Public
 License along with this program; if not,  see 
 .
 On Debian systems, the complete text of the GNU Lesser General Public License
 Version 2.1 can be found in `/usr/share/common-licenses/LGPL-2.1'.

License:   BSD-2-Clause
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 1. Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
 .
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.

License:   GPL-2 with Linux-syscall-note exception
 NOTE! This copyright does *not* cover user programs that use kernel services
 by normal system calls - this is merely considered normal use of the kernel,
 and does *not* fall under the heading of "derived work". Also note that the
 GPL below is copyrighted by the Free Software Foundation, but the instance of
 code that it refers to (the Linux kernel) is copyrighted by me and others who
 actually wrote it.
 .
 Also note that the only valid version of the GPL as far as the kernel is
 concerned is _this_ particular version of the license (ie v2, not v2.2 or v3.x
 or whatever), unless explicitly otherwise stated.
 .
 Linus Torvalds
 .
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; version 2 of the License.
 .
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 .
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 .
 On Debian and systems the full text of the GNU General Public
 License version 2 can be found in the file
 "/usr/share/common-licenses/GPL-2".