man: add licenses to all files that lack one

Documentation is licensed under LGPL-2.1-or-later.
Scripts are MIT to facilitate reuse.
Examples are relicensed to CC0-1.0 to maximise copy-and-paste
for users, with permission from authors.

man/.dir-locals.el

@@ -1,3 +1,4 @@
+; SPDX-License-Identifier: LGPL-2.1-or-later
 ; special .c mode with reduced indentation for man pages
 ((c-mode . ((fill-column . 80)
             (c-basic-offset . 2)

man/50-xdg-data-dirs.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: CC0-1.0
 
 # set the default value
 XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/local/share/:/usr/share}"

man/90-rearrange-path.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# SPDX-License-Identifier: CC0-1.0
 
 """
 

man/check-os-release.py

@@ -1,4 +1,5 @@
 #!/usr/bin/python
+# SPDX-License-Identifier: CC0-1.0
 
 import ast
 import re

man/check-os-release.sh

@@ -1,4 +1,5 @@
 #!/bin/sh -eu
+# SPDX-License-Identifier: CC0-1.0
 
 test -e /etc/os-release && os_release='/etc/os-release' || os_release='/usr/lib/os-release'
 . "${os_release}"

man/fido2-crypttab.sh

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: CC0-1.0
+
 # Enroll the security token in the LUKS2 volume. Replace /dev/sdXn by the
 # partition to use (e.g. /dev/sda1).
 sudo systemd-cryptenroll --fido2-device=auto /dev/sdXn

man/html.in

@@ -1,4 +1,5 @@
 #!/bin/sh
+# SPDX-License-Identifier: LGPL-2.1-or-later
 set -e
 
 if [ -z "$1" ]; then

man/hwdb-usb-device.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 #include <stdint.h>
 #include <sd-hwdb.h>

man/id128-app-specific.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 #include <systemd/sd-id128.h>
 

man/inotify-watch-tmp.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 #include <string.h>
 #include <sys/inotify.h>

man/journal-iterate-poll.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <poll.h>
 #include <time.h>
 #include <systemd/sd-journal.h>

man/journal-iterate-unique.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 #include <string.h>
 #include <systemd/sd-journal.h>

man/journal-iterate-wait.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 #include <string.h>
 #include <systemd/sd-journal.h>

man/man.in

@@ -1,4 +1,6 @@
 #!/bin/sh
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
 set -e
 
 if [ -z "$1" ]; then

man/path-documents.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <sd-path.h>

man/print-unit-path.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>

man/repart.d.xml

@@ -1,6 +1,8 @@
 <?xml version='1.0'?>
 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
+
 <refentry id="repart.d" conditional='ENABLE_REPART'
           xmlns:xi="http://www.w3.org/2001/XInclude">
 

man/sd-bus-container-append.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <systemd/sd-bus.h>
 
 int append_strings_to_message(sd_bus_message *m, const char *const *arr) {

man/sd-bus-container-read.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <stdio.h>
 
 #include <systemd/sd-bus.h>

man/send-unit-files-changed.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <systemd/sd-bus.h>
 #define _cleanup_(f) __attribute__((cleanup(f)))
 

man/tpm2-crypttab.sh

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: CC0-1.0
+
 # Enroll the TPM2 security chip in the LUKS2 volume, and bind it to PCR 7
 # only. Replace /dev/sdXn by the partition to use (e.g. /dev/sda1).
 sudo systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs=7 /dev/sdXn

man/vtable-example.c

@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: CC0-1.0 */
+
 #include <errno.h>
 #include <stdbool.h>
 #include <stddef.h>

man/vtable-example.xml

@@ -1,5 +1,6 @@
 <!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
 <node>
  <interface name="org.freedesktop.DBus.Peer">
   <method name="Ping"/>

man/yubikey-crypttab.sh

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: CC0-1.0
+
 # Destroy any old key on the Yubikey (careful!)
 ykman piv reset