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Subject[PATCH 03/11] xz: Switch from public domain to BSD Zero Clause License (0BSD)
Date
Remove the public domain notices and add SPDX license identifiers.

Change MODULE_LICENSE from "GPL" to "Dual BSD/GPL" because 0BSD should
count as a BSD license variant here.

The switch to 0BSD was done in the upstream XZ Embedded project because
public domain has (real or perceived) legal issues in some jurisdictions.

Reviewed-by: Jia Tan <jiat0218@gmail.com>
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
---
include/linux/decompress/unxz.h | 5 ++---
include/linux/xz.h | 5 ++---
lib/decompress_unxz.c | 5 ++---
lib/xz/xz_crc32.c | 5 ++---
lib/xz/xz_dec_bcj.c | 5 ++---
lib/xz/xz_dec_lzma2.c | 5 ++---
lib/xz/xz_dec_stream.c | 5 ++---
lib/xz/xz_dec_syms.c | 12 +++---------
lib/xz/xz_dec_test.c | 12 +++---------
lib/xz/xz_lzma2.h | 5 ++---
lib/xz/xz_private.h | 5 ++---
lib/xz/xz_stream.h | 5 ++---
scripts/xz_wrap.sh | 5 +----
13 files changed, 27 insertions(+), 52 deletions(-)

diff --git a/include/linux/decompress/unxz.h b/include/linux/decompress/unxz.h
index f764e2a7201e..3dd2658a9dab 100644
--- a/include/linux/decompress/unxz.h
+++ b/include/linux/decompress/unxz.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: 0BSD */
+
/*
* Wrapper for decompressing XZ-compressed kernel, initramfs, and initrd
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#ifndef DECOMPRESS_UNXZ_H
diff --git a/include/linux/xz.h b/include/linux/xz.h
index 7285ca5d56e9..5728d57aecc0 100644
--- a/include/linux/xz.h
+++ b/include/linux/xz.h
@@ -1,11 +1,10 @@
+/* SPDX-License-Identifier: 0BSD */
+
/*
* XZ decompressor
*
* Authors: Lasse Collin <lasse.collin@tukaani.org>
* Igor Pavlov <https://7-zip.org/>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#ifndef XZ_H
diff --git a/lib/decompress_unxz.c b/lib/decompress_unxz.c
index 842894158944..34bb7efc0412 100644
--- a/lib/decompress_unxz.c
+++ b/lib/decompress_unxz.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: 0BSD
+
/*
* Wrapper for decompressing XZ-compressed kernel, initramfs, and initrd
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

/*
diff --git a/lib/xz/xz_crc32.c b/lib/xz/xz_crc32.c
index 88a2c35e1b59..30b8a27110b1 100644
--- a/lib/xz/xz_crc32.c
+++ b/lib/xz/xz_crc32.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: 0BSD
+
/*
* CRC32 using the polynomial from IEEE-802.3
*
* Authors: Lasse Collin <lasse.collin@tukaani.org>
* Igor Pavlov <https://7-zip.org/>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

/*
diff --git a/lib/xz/xz_dec_bcj.c b/lib/xz/xz_dec_bcj.c
index ef449e97d1a1..ab9237ed6db8 100644
--- a/lib/xz/xz_dec_bcj.c
+++ b/lib/xz/xz_dec_bcj.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: 0BSD
+
/*
* Branch/Call/Jump (BCJ) filter decoders
*
* Authors: Lasse Collin <lasse.collin@tukaani.org>
* Igor Pavlov <https://7-zip.org/>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#include "xz_private.h"
diff --git a/lib/xz/xz_dec_lzma2.c b/lib/xz/xz_dec_lzma2.c
index 27ce34520e78..613939f5dd6c 100644
--- a/lib/xz/xz_dec_lzma2.c
+++ b/lib/xz/xz_dec_lzma2.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: 0BSD
+
/*
* LZMA2 decoder
*
* Authors: Lasse Collin <lasse.collin@tukaani.org>
* Igor Pavlov <https://7-zip.org/>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#include "xz_private.h"
diff --git a/lib/xz/xz_dec_stream.c b/lib/xz/xz_dec_stream.c
index 683570b93a8c..0058406ccd17 100644
--- a/lib/xz/xz_dec_stream.c
+++ b/lib/xz/xz_dec_stream.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: 0BSD
+
/*
* .xz Stream decoder
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#include "xz_private.h"
diff --git a/lib/xz/xz_dec_syms.c b/lib/xz/xz_dec_syms.c
index 61098c67a413..495d2cc2e6e8 100644
--- a/lib/xz/xz_dec_syms.c
+++ b/lib/xz/xz_dec_syms.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: 0BSD
+
/*
* XZ decoder module information
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#include <linux/module.h>
@@ -25,9 +24,4 @@ EXPORT_SYMBOL(xz_dec_microlzma_end);
MODULE_DESCRIPTION("XZ decompressor");
MODULE_VERSION("1.1");
MODULE_AUTHOR("Lasse Collin <lasse.collin@tukaani.org> and Igor Pavlov");
-
-/*
- * This code is in the public domain, but in Linux it's simplest to just
- * say it's GPL and consider the authors as the copyright holders.
- */
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/lib/xz/xz_dec_test.c b/lib/xz/xz_dec_test.c
index da28a19d6c98..53d3600f2ddb 100644
--- a/lib/xz/xz_dec_test.c
+++ b/lib/xz/xz_dec_test.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: 0BSD
+
/*
* XZ decoder tester
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#include <linux/kernel.h>
@@ -212,9 +211,4 @@ module_exit(xz_dec_test_exit);
MODULE_DESCRIPTION("XZ decompressor tester");
MODULE_VERSION("1.0");
MODULE_AUTHOR("Lasse Collin <lasse.collin@tukaani.org>");
-
-/*
- * This code is in the public domain, but in Linux it's simplest to just
- * say it's GPL and consider the authors as the copyright holders.
- */
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/lib/xz/xz_lzma2.h b/lib/xz/xz_lzma2.h
index 92d852d4f87a..d2632b7dfb9c 100644
--- a/lib/xz/xz_lzma2.h
+++ b/lib/xz/xz_lzma2.h
@@ -1,11 +1,10 @@
+/* SPDX-License-Identifier: 0BSD */
+
/*
* LZMA2 definitions
*
* Authors: Lasse Collin <lasse.collin@tukaani.org>
* Igor Pavlov <https://7-zip.org/>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#ifndef XZ_LZMA2_H
diff --git a/lib/xz/xz_private.h b/lib/xz/xz_private.h
index bf1e94ec7873..2412a5d54801 100644
--- a/lib/xz/xz_private.h
+++ b/lib/xz/xz_private.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: 0BSD */
+
/*
* Private includes and definitions
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#ifndef XZ_PRIVATE_H
diff --git a/lib/xz/xz_stream.h b/lib/xz/xz_stream.h
index 430bb3a0d195..55f9f6f94b78 100644
--- a/lib/xz/xz_stream.h
+++ b/lib/xz/xz_stream.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: 0BSD */
+
/*
* Definitions for handling the .xz file format
*
* Author: Lasse Collin <lasse.collin@tukaani.org>
- *
- * This file has been put into the public domain.
- * You can do whatever you want with this file.
*/

#ifndef XZ_STREAM_H
diff --git a/scripts/xz_wrap.sh b/scripts/xz_wrap.sh
index d06baf626abe..bb760b721b2c 100755
--- a/scripts/xz_wrap.sh
+++ b/scripts/xz_wrap.sh
@@ -1,13 +1,10 @@
#!/bin/sh
+# SPDX-License-Identifier: 0BSD
#
# This is a wrapper for xz to compress the kernel image using appropriate
# compression options depending on the architecture.
#
# Author: Lasse Collin <lasse.collin@tukaani.org>
-#
-# This file has been put into the public domain.
-# You can do whatever you want with this file.
-#

BCJ=
LZMA2OPTS=
--
2.44.0

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