From 448e7440c2d6e682d55032d15076b840521ab120 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Tue, 27 Oct 2020 18:32:27 +0100
Subject: [PATCH] headers: add spdx tags to imported files with a known license

I added the header in the cases where the license text is present and it is
easy to find the appropriate SPDX header.

For "public domain" stuff: SDPX treats each "public domain" license as unique [1],
but luckily the one in siphash24.c is one of the identified variants. There are
some other cases which specify "public domain" but there doesn't seem to be a
SPDX identifier.

[1] https://wiki.spdx.org/view/Legal_Team/Decisions/Dealing_with_Public_Domain_within_SPDX_Files

gunicode.[ch] are imported from glib, which is licensed as LGPL2.1+,
see https://gitlab.gnome.org/GNOME/glib/-/blob/master/glib/gunicode.h.
---
 src/basic/gunicode.c       | 1 +
 src/basic/gunicode.h       | 4 ++--
 src/basic/siphash24.c      | 4 +++-
 src/basic/siphash24.h      | 2 ++
 src/boot/efi/sha256.c      | 2 ++
 src/shared/initreq.h       | 1 +
 src/shared/linux/nl80211.h | 2 ++
 7 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/basic/gunicode.c b/src/basic/gunicode.c
index c51b1a7a18..02637d74e9 100644
--- a/src/basic/gunicode.c
+++ b/src/basic/gunicode.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /* gunicode.c - Unicode manipulation functions
  *
  *  Copyright (C) 1999, 2000 Tom Tromey
diff --git a/src/basic/gunicode.h b/src/basic/gunicode.h
index a16b7b6ff1..765077db83 100644
--- a/src/basic/gunicode.h
+++ b/src/basic/gunicode.h
@@ -1,10 +1,10 @@
-#pragma once
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /* gunicode.h - Unicode manipulation functions
  *
  *  Copyright (C) 1999, 2000 Tom Tromey
  *  Copyright © 2000, 2005 Red Hat, Inc.
  */
+#pragma once
 
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/src/basic/siphash24.c b/src/basic/siphash24.c
index 61180819b1..7c61eb145d 100644
--- a/src/basic/siphash24.c
+++ b/src/basic/siphash24.c
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 /*
    SipHash reference C implementation
 
@@ -10,7 +12,7 @@
    worldwide. This software is distributed without any warranty.
 
    You should have received a copy of the CC0 Public Domain Dedication along with
-   this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+   this software. If not, see <https://creativecommons.org/publicdomain/zero/1.0/>.
 
    (Minimal changes made by Lennart Poettering, to make clean for inclusion in systemd)
    (Refactored by Tom Gundersen to split up in several functions and follow systemd
diff --git a/src/basic/siphash24.h b/src/basic/siphash24.h
index fe43256882..90a6de00e4 100644
--- a/src/basic/siphash24.h
+++ b/src/basic/siphash24.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #pragma once
 
 #include <inttypes.h>
diff --git a/src/boot/efi/sha256.c b/src/boot/efi/sha256.c
index 40da636dc7..005e1902d4 100644
--- a/src/boot/efi/sha256.c
+++ b/src/boot/efi/sha256.c
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
 /* Stolen from glibc and converted to UEFI style. In glibc it comes with the following copyright blurb: */
 
 /* Functions to compute SHA256 message digest of files or memory blocks.
diff --git a/src/shared/initreq.h b/src/shared/initreq.h
index 1d7ff81df1..1bf5b8edd7 100644
--- a/src/shared/initreq.h
+++ b/src/shared/initreq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2+ */
 /*
  * initreq.h	Interface to talk to init through /dev/initctl.
  *
diff --git a/src/shared/linux/nl80211.h b/src/shared/linux/nl80211.h
index b065c1fe4d..65edfff1ca 100644
--- a/src/shared/linux/nl80211.h
+++ b/src/shared/linux/nl80211.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: MIT */
+
 #ifndef __LINUX_NL80211_H
 #define __LINUX_NL80211_H
 /*