license: relicense "shared/nm-std-aux/nm-dbus-compat.h" under LGPL-2.1+

"nm-dbus-compat.h" was GPL licensed. That is a problem, because we use it from
libnm (which is LGPL).

The history of this file in NetworkManager source tree:

  $ git shortlog -n -s e055bdbbc3e7bb3ff3bc73860c4479f15bbfe7b2 -- shared/nm-std-aux/nm-dbus-compat.h include/nm-dbus-compat.h shared/nm-dbus-compat.h
       5    Thomas Haller
       1    Dan Winship
       1    Lubomir Rintel

Note that commit dd0e19895532 ('include: add nm-dbus-compat.h')
introduced this file from dbus sources ([1]). Hence, originally
the file is (like all of dbus sources) dual-licensed under GPL-2.0+
and Academic Free License 2.1 (AFL-2.1). That makes it problematic to
change the license of this file to LGPL also because of the old history
of the file.

Instead, drop everything from the header except the bits that we
actually use. I claim the remainder is trivial and only contains
defines for documented D-Bus API. I don't think that the remainder
is copyrightable and hence get rid of the copy-right notice and the
GPL license.

[1] https://gitlab.freedesktop.org/dbus/dbus/blob/39ea37b587c9fa4c5e8d0aff08b043617b22f50a/dbus/dbus-shared.h

1 files changed, 12 insertions, 49 deletions

diff --git a/shared/nm-std-aux/nm-dbus-compat.h b/shared/nm-std-aux/nm-dbus-compat.h
index bd010f4588..293e15cc88 100644
--- a/shared/nm-std-aux/nm-dbus-compat.h
+++ b/shared/nm-std-aux/nm-dbus-compat.h
@@ -1,62 +1,25 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2015 Red Hat, Inc.
- */
+// SPDX-License-Identifier: LGPL-2.1+
 
 #ifndef __NM_DBUS_COMPAT_H__
 #define __NM_DBUS_COMPAT_H__
 
-/* Copied from <dbus/dbus-shared.h> */
+#define DBUS_SERVICE_DBUS             "org.freedesktop.DBus"
 
-/* Bus names */
+#define DBUS_PATH_DBUS                "/org/freedesktop/DBus"
 
-/** The bus name used to talk to the bus itself. */
-#define DBUS_SERVICE_DBUS      "org.freedesktop.DBus"
-
-/* Paths */
-/** The object path used to talk to the bus itself. */
-#define DBUS_PATH_DBUS  "/org/freedesktop/DBus"
-/** The object path used in local/in-process-generated messages. */
-#define DBUS_PATH_LOCAL "/org/freedesktop/DBus/Local"
-
-/* Interfaces, these #define don't do much other than
- * catch typos at compile time
- */
-/** The interface exported by the object with #DBUS_SERVICE_DBUS and #DBUS_PATH_DBUS */
 #define DBUS_INTERFACE_DBUS           "org.freedesktop.DBus"
-/** The interface supported by introspectable objects */
 #define DBUS_INTERFACE_INTROSPECTABLE "org.freedesktop.DBus.Introspectable"
-/** The interface supported by objects with properties */
-#define DBUS_INTERFACE_PROPERTIES     "org.freedesktop.DBus.Properties"
-/** The interface supported by most dbus peers */
-#define DBUS_INTERFACE_PEER           "org.freedesktop.DBus.Peer"
-
 #define DBUS_INTERFACE_OBJECT_MANAGER "org.freedesktop.DBus.ObjectManager"
+#define DBUS_INTERFACE_PEER           "org.freedesktop.DBus.Peer"
+#define DBUS_INTERFACE_PROPERTIES     "org.freedesktop.DBus.Properties"
 
-/** This is a special interface whose methods can only be invoked
- * by the local implementation (messages from remote apps aren't
- * allowed to specify this interface).
- */
-#define DBUS_INTERFACE_LOCAL "org.freedesktop.DBus.Local"
-
-/* Owner flags */
-#define DBUS_NAME_FLAG_ALLOW_REPLACEMENT 0x1 /**< Allow another service to become the primary owner if requested */
-#define DBUS_NAME_FLAG_REPLACE_EXISTING  0x2 /**< Request to replace the current primary owner */
-#define DBUS_NAME_FLAG_DO_NOT_QUEUE      0x4 /**< If we can not become the primary owner do not place us in the queue */
-
-/* Replies to request for a name */
-#define DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER  1 /**< Service has become the primary owner of the requested name */
-#define DBUS_REQUEST_NAME_REPLY_IN_QUEUE       2 /**< Service could not become the primary owner and has been placed in the queue */
-#define DBUS_REQUEST_NAME_REPLY_EXISTS         3 /**< Service is already in the queue */
-#define DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER  4 /**< Service is already the primary owner */
-
-/* Replies to releasing a name */
-#define DBUS_RELEASE_NAME_REPLY_RELEASED        1 /**< Service was released from the given name */
-#define DBUS_RELEASE_NAME_REPLY_NON_EXISTENT    2 /**< The given name does not exist on the bus */
-#define DBUS_RELEASE_NAME_REPLY_NOT_OWNER       3 /**< Service is not an owner of the given name */
+#define DBUS_NAME_FLAG_ALLOW_REPLACEMENT 0x1
+#define DBUS_NAME_FLAG_REPLACE_EXISTING  0x2
+#define DBUS_NAME_FLAG_DO_NOT_QUEUE      0x4
 
-/* Replies to service starts */
-#define DBUS_START_REPLY_SUCCESS         1 /**< Service was auto started */
-#define DBUS_START_REPLY_ALREADY_RUNNING 2 /**< Service was already running */
+#define DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER  1
+#define DBUS_REQUEST_NAME_REPLY_IN_QUEUE       2
+#define DBUS_REQUEST_NAME_REPLY_EXISTS         3
+#define DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER  4
 
 #endif  /* __NM_DBUS_COMPAT_H__ */