Import ubus tools.

3P/ubus/ubusd_id.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2011 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __UBUSD_ID_H
+#define __UBUSD_ID_H
+
+#include <libubox/avl.h>
+#include <stdint.h>
+
+struct ubus_id {
+	struct avl_node avl;
+	uint32_t id;
+};
+
+void ubus_init_id_tree(struct avl_tree *tree);
+void ubus_init_string_tree(struct avl_tree *tree, bool dup);
+bool ubus_alloc_id(struct avl_tree *tree, struct ubus_id *id, uint32_t val);
+
+static inline void ubus_free_id(struct avl_tree *tree, struct ubus_id *id)
+{
+	avl_delete(tree, &id->avl);
+}
+
+static inline struct ubus_id *ubus_find_id(struct avl_tree *tree, uint32_t id)
+{
+	struct avl_node *avl;
+
+	avl = avl_find(tree, &id);
+	if (!avl)
+		return NULL;
+
+	return container_of(avl, struct ubus_id, avl);
+}
+
+#endif