1 files changed, 22 insertions, 19 deletions

diff --git a/include/qom/object.h b/include/qom/object.h
index 95d6e06..26df613 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -280,7 +280,7 @@ struct Object
     static void \
     module_obj_name##_finalize(Object *obj); \
     static void \
-    module_obj_name##_class_init(ObjectClass *oc, void *data); \
+    module_obj_name##_class_init(ObjectClass *oc, const void *data); \
     static void \
     module_obj_name##_init(Object *obj); \
     \
@@ -294,7 +294,7 @@ struct Object
         .class_size = CLASS_SIZE, \
         .class_init = module_obj_name##_class_init, \
         .abstract = ABSTRACT, \
-        .interfaces = (InterfaceInfo[]) { __VA_ARGS__ } , \
+        .interfaces = (const InterfaceInfo[]) { __VA_ARGS__ } , \
     }; \
     \
     static void \
@@ -445,7 +445,8 @@ struct Object
  *   class will have already been initialized so the type is only responsible
  *   for initializing its own members.
  * @instance_post_init: This function is called to finish initialization of
- *   an object, after all @instance_init functions were called.
+ *   an object, after all @instance_init functions were called, as well as
+ *   @instance_post_init functions for the parent classes.
  * @instance_finalize: This function is called during object destruction.  This
  *   is called before the parent @instance_finalize function has been called.
  *   An object should only free the members that are unique to its type in this
@@ -486,11 +487,11 @@ struct TypeInfo
     bool abstract;
     size_t class_size;
 
-    void (*class_init)(ObjectClass *klass, void *data);
-    void (*class_base_init)(ObjectClass *klass, void *data);
-    void *class_data;
+    void (*class_init)(ObjectClass *klass, const void *data);
+    void (*class_base_init)(ObjectClass *klass, const void *data);
+    const void *class_data;
 
-    InterfaceInfo *interfaces;
+    const InterfaceInfo *interfaces;
 };
 
 /**
@@ -573,12 +574,15 @@ struct InterfaceInfo {
  *
  * The class for all interfaces.  Subclasses of this class should only add
  * virtual methods.
+ *
+ * Note that most of the fields of ObjectClass are unused (all except
+ * "type", in fact).  They are only present in InterfaceClass to allow
+ * @object_class_dynamic_cast to work with both regular classes and interfaces.
  */
 struct InterfaceClass
 {
     ObjectClass parent_class;
     /* private: */
-    ObjectClass *concrete_class;
     Type interface_type;
 };
 
@@ -1510,6 +1514,16 @@ const char *object_property_get_type(Object *obj, const char *name,
  */
 Object *object_get_root(void);
 
+/**
+ * object_get_container:
+ * @name: the name of container to lookup
+ *
+ * Lookup a root level container.
+ *
+ * Returns: the container with @name.
+ */
+Object *object_get_container(const char *name);
+
 
 /**
  * object_get_objects_root:
@@ -2007,17 +2021,6 @@ int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
 int object_child_foreach_recursive(Object *obj,
                                    int (*fn)(Object *child, void *opaque),
                                    void *opaque);
-/**
- * container_get:
- * @root: root of the #path, e.g., object_get_root()
- * @path: path to the container
- *
- * Return a container object whose path is @path.  Create more containers
- * along the path if necessary.
- *
- * Returns: the container object.
- */
-Object *container_get(Object *root, const char *path);
 
 /**
  * object_property_add_new_container: