From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 package/libs/libnl-tiny/src/object.c | 147 +++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 package/libs/libnl-tiny/src/object.c

(limited to 'package/libs/libnl-tiny/src/object.c')

diff --git a/package/libs/libnl-tiny/src/object.c b/package/libs/libnl-tiny/src/object.c
new file mode 100644
index 0000000..384bacd
--- /dev/null
+++ b/package/libs/libnl-tiny/src/object.c
@@ -0,0 +1,147 @@
+/*
+ * lib/object.c		Generic Cacheable Object
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation version 2.1
+ *	of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup cache
+ * @defgroup object Object
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/cache.h>
+#include <netlink/object.h>
+#include <netlink/utils.h>
+
+static inline struct nl_object_ops *obj_ops(struct nl_object *obj)
+{
+	if (!obj->ce_ops)
+		BUG();
+
+	return obj->ce_ops;
+}
+
+/**
+ * @name Object Creation/Deletion
+ * @{
+ */
+
+/**
+ * Allocate a new object of kind specified by the operations handle
+ * @arg ops		cache operations handle
+ * @return The new object or NULL
+ */
+struct nl_object *nl_object_alloc(struct nl_object_ops *ops)
+{
+	struct nl_object *new;
+
+	if (ops->oo_size < sizeof(*new))
+		BUG();
+
+	new = calloc(1, ops->oo_size);
+	if (!new)
+		return NULL;
+
+	new->ce_refcnt = 1;
+	nl_init_list_head(&new->ce_list);
+
+	new->ce_ops = ops;
+	if (ops->oo_constructor)
+		ops->oo_constructor(new);
+
+	NL_DBG(4, "Allocated new object %p\n", new);
+
+	return new;
+}
+
+struct nl_derived_object {
+	NLHDR_COMMON
+	char data;
+};
+
+/**
+ * Allocate a new object and copy all data from an existing object
+ * @arg obj		object to inherite data from
+ * @return The new object or NULL.
+ */
+struct nl_object *nl_object_clone(struct nl_object *obj)
+{
+	struct nl_object *new;
+	struct nl_object_ops *ops = obj_ops(obj);
+	int doff = offsetof(struct nl_derived_object, data);
+	int size;
+
+	new = nl_object_alloc(ops);
+	if (!new)
+		return NULL;
+
+	size = ops->oo_size - doff;
+	if (size < 0)
+		BUG();
+
+	new->ce_ops = obj->ce_ops;
+	new->ce_msgtype = obj->ce_msgtype;
+
+	if (size)
+		memcpy((void *)new + doff, (void *)obj + doff, size);
+
+	if (ops->oo_clone) {
+		if (ops->oo_clone(new, obj) < 0) {
+			nl_object_free(new);
+			return NULL;
+		}
+	} else if (size && ops->oo_free_data)
+		BUG();
+
+	return new;
+}
+
+/**
+ * Free a cacheable object
+ * @arg obj		object to free
+ *
+ * @return 0 or a negative error code.
+ */
+void nl_object_free(struct nl_object *obj)
+{
+	struct nl_object_ops *ops = obj_ops(obj);
+
+	if (obj->ce_refcnt > 0)
+		NL_DBG(1, "Warning: Freeing object in use...\n");
+
+	if (obj->ce_cache)
+		nl_cache_remove(obj);
+
+	if (ops->oo_free_data)
+		ops->oo_free_data(obj);
+
+	free(obj);
+
+	NL_DBG(4, "Freed object %p\n", obj);
+}
+
+/** @} */
+
+/**
+ * @name Reference Management
+ * @{
+ */
+
+/** @} */
+
+/**
+ * @name Utillities
+ * @{
+ */
+
+/** @} */
+
+/** @} */
-- 
cgit v1.2.3