settings: log connection diffs in replace_settings only where appropriate

Only log connection diffs when we update a connection that we actually
care about.

Note that most plugin specific connections use
nm_settings_connection_replace_settings() in their constructor
to initialize themselves. These occurrences are not interesting
and spam the logfile.

src/settings/nm-settings-connection.c

@@ -450,6 +450,7 @@ gboolean
 nm_settings_connection_replace_settings (NMSettingsConnection *self,
                                          NMConnection *new_connection,
                                          gboolean update_unsaved,
+                                         const char *log_diff_name,
                                          GError **error)
 {
 	NMSettingsConnectionPrivate *priv;
@@ -475,7 +476,8 @@ nm_settings_connection_replace_settings (NMSettingsConnection *self,
 	 */
 	g_signal_handlers_block_by_func (self, G_CALLBACK (changed_cb), GUINT_TO_POINTER (TRUE));
 
-	nm_utils_log_connection_diff (new_connection, NM_CONNECTION (self), LOGL_DEBUG, LOGD_CORE, "update connection", "++ ");
+	if (log_diff_name)
+		nm_utils_log_connection_diff (new_connection, NM_CONNECTION (self), LOGL_DEBUG, LOGD_CORE, log_diff_name, "++ ");
 
 	nm_connection_replace_settings_from_connection (NM_CONNECTION (self), new_connection);
 	nm_settings_connection_set_flags (self,
@@ -535,9 +537,9 @@ replace_and_commit (NMSettingsConnection *self,
 {
 	GError *error = NULL;
 
-	if (nm_settings_connection_replace_settings (self, new_connection, TRUE, &error)) {
+	if (nm_settings_connection_replace_settings (self, new_connection, TRUE, "replace-and-commit-disk", &error))
 		nm_settings_connection_commit_changes (self, callback, user_data);
-	} else {
+	else {
 		g_assert (error);
 		if (callback)
 			callback (self, error, user_data);
@@ -1367,7 +1369,7 @@ update_auth_cb (NMSettingsConnection *self,
 		                                           con_update_cb,
 		                                           info);
 	} else {
-		if (!nm_settings_connection_replace_settings (self, info->new_settings, TRUE, &local))
+		if (!nm_settings_connection_replace_settings (self, info->new_settings, TRUE, "replace-and-commit-memory", &local))
 			g_assert (local);
 		con_update_cb (self, local, info);
 		g_clear_error (&local);

src/settings/nm-settings-connection.h

@@ -123,6 +123,7 @@ void nm_settings_connection_commit_changes (NMSettingsConnection *connection,
 gboolean nm_settings_connection_replace_settings (NMSettingsConnection *self,
                                                   NMConnection *new_connection,
                                                   gboolean update_unsaved,
+                                                  const char *log_diff_name,
                                                   GError **error);
 
 void nm_settings_connection_replace_and_commit (NMSettingsConnection *self,

src/settings/plugins/example/nm-example-connection.c

@@ -82,6 +82,7 @@ nm_example_connection_new (const char *full_path,
 	if (!nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (object),
 	                                              tmp,
 	                                              TRUE,
+	                                              NULL,
 	                                              error)) {
 		g_object_unref (object);
 		object = NULL;

src/settings/plugins/ibft/nm-ibft-connection.c

@@ -46,6 +46,7 @@ nm_ibft_connection_new (const GPtrArray *block, GError **error)
 	if (!nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (object),
 	                                              source,
 	                                              FALSE,
+	                                              NULL,
 	                                              error))
 		g_clear_object (&object);
 

src/settings/plugins/ifcfg-rh/nm-ifcfg-connection.c

@@ -235,6 +235,7 @@ nm_ifcfg_connection_new (NMConnection *source,
 	if (nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (object),
 	                                             tmp,
 	                                             update_unsaved,
+	                                             NULL,
 	                                             error))
 		nm_ifcfg_connection_check_devtimeout (NM_IFCFG_CONNECTION (object));
 	else

src/settings/plugins/ifcfg-rh/plugin.c

@@ -340,6 +340,7 @@ connection_new_or_changed (SCPluginIfcfg *self,
 		if (!nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (existing),
 		                                              NM_CONNECTION (new),
 		                                              FALSE,  /* don't set Unsaved */
+		                                              "ifcfg-rh-update",
 		                                              &error)) {
 			/* Shouldn't ever get here as 'new' was verified by the reader already */
 			g_assert_not_reached ();

src/settings/plugins/ifnet/nm-ifnet-connection.c

@@ -82,6 +82,7 @@ nm_ifnet_connection_new (NMConnection *source, const char *conn_name)
 	nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (object),
 	                                         tmp,
 	                                         update_unsaved,
+	                                         NULL,
 	                                         NULL);
 	g_object_unref (tmp);
 

src/settings/plugins/ifnet/plugin.c

@@ -313,6 +313,7 @@ reload_connections (NMSystemConfigInterface *config)
 				if (!nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (old),
 				                                              NM_CONNECTION (new),
 				                                              FALSE,  /* don't set Unsaved */
+				                                              "ifnet-update",
 				                                              &error)) {
 					/* Shouldn't ever get here as 'new' was verified by the reader already */
 					g_assert_not_reached ();

src/settings/plugins/keyfile/nm-keyfile-connection.c

@@ -76,6 +76,7 @@ nm_keyfile_connection_new (NMConnection *source,
 	if (!nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (object),
 	                                              tmp,
 	                                              update_unsaved,
+	                                              NULL,
 	                                              error)) {
 		g_object_unref (object);
 		object = NULL;

src/settings/plugins/keyfile/plugin.c

@@ -126,6 +126,7 @@ update_connection (SCPluginKeyfile *self,
 		if (!nm_settings_connection_replace_settings (NM_SETTINGS_CONNECTION (connection),
 		                                              NM_CONNECTION (tmp),
 		                                              FALSE,  /* don't set Unsaved */
+		                                              "keyfile-update",
 		                                              &error)) {
 			/* Shouldn't ever get here as 'new' was verified by the reader already */
 			g_assert_not_reached ();
@@ -182,6 +183,7 @@ new_connection (SCPluginKeyfile *self,
 		if (!nm_settings_connection_replace_settings (connection,
 		                                              NM_CONNECTION (tmp),
 		                                              FALSE,  /* don't set Unsaved */
+		                                              "keyfile-update-new",
 		                                              &error)) {
 			/* Shouldn't ever get here as 'tmp' was verified by the reader already */
 			g_assert_not_reached ();