diff options
Diffstat (limited to 'qom/object.c')
| -rw-r--r-- | qom/object.c | 147 |
1 files changed, 117 insertions, 30 deletions
diff --git a/qom/object.c b/qom/object.c index 7cefdf2..0e8267b 100644 --- a/qom/object.c +++ b/qom/object.c @@ -356,11 +356,6 @@ static inline bool object_property_is_child(ObjectProperty *prop) return strstart(prop->type, "child<", NULL); } -static inline bool object_property_is_link(ObjectProperty *prop) -{ - return strstart(prop->type, "link<", NULL); -} - static void object_property_del_all(Object *obj) { while (!QTAILQ_EMPTY(&obj->properties)) { @@ -716,11 +711,17 @@ GSList *object_class_get_list(const char *implements_type, void object_ref(Object *obj) { + if (!obj) { + return; + } atomic_inc(&obj->ref); } void object_unref(Object *obj) { + if (!obj) { + return; + } g_assert(obj->ref > 0); /* parent always holds a reference to its children */ @@ -729,11 +730,12 @@ void object_unref(Object *obj) } } -void object_property_add(Object *obj, const char *name, const char *type, - ObjectPropertyAccessor *get, - ObjectPropertyAccessor *set, - ObjectPropertyRelease *release, - void *opaque, Error **errp) +ObjectProperty * +object_property_add(Object *obj, const char *name, const char *type, + ObjectPropertyAccessor *get, + ObjectPropertyAccessor *set, + ObjectPropertyRelease *release, + void *opaque, Error **errp) { ObjectProperty *prop; @@ -742,7 +744,7 @@ void object_property_add(Object *obj, const char *name, const char *type, error_setg(errp, "attempt to add duplicate property '%s'" " to object (type '%s')", name, object_get_typename(obj)); - return; + return NULL; } } @@ -757,6 +759,7 @@ void object_property_add(Object *obj, const char *name, const char *type, prop->opaque = opaque; QTAILQ_INSERT_TAIL(&obj->properties, prop, node); + return prop; } ObjectProperty *object_property_find(Object *obj, const char *name, @@ -1029,6 +1032,11 @@ static void object_get_child_property(Object *obj, Visitor *v, void *opaque, g_free(path); } +static Object *object_resolve_child_property(Object *parent, void *opaque, const gchar *part) +{ + return opaque; +} + static void object_finalize_child_property(Object *obj, const char *name, void *opaque) { @@ -1042,15 +1050,18 @@ void object_property_add_child(Object *obj, const char *name, { Error *local_err = NULL; gchar *type; + ObjectProperty *op; type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child))); - object_property_add(obj, name, type, object_get_child_property, NULL, - object_finalize_child_property, child, &local_err); + op = object_property_add(obj, name, type, object_get_child_property, NULL, + object_finalize_child_property, child, &local_err); if (local_err) { error_propagate(errp, local_err); goto out; } + + op->resolve = object_resolve_child_property; object_ref(child); g_assert(child->parent == NULL); child->parent = obj; @@ -1155,13 +1166,16 @@ static void object_set_link_property(Object *obj, Visitor *v, void *opaque, return; } - if (new_target) { - object_ref(new_target); - } + object_ref(new_target); *child = new_target; - if (old_target != NULL) { - object_unref(old_target); - } + object_unref(old_target); +} + +static Object *object_resolve_link_property(Object *parent, void *opaque, const gchar *part) +{ + LinkProperty *lprop = opaque; + + return *lprop->child; } static void object_release_link_property(Object *obj, const char *name, @@ -1185,6 +1199,7 @@ void object_property_add_link(Object *obj, const char *name, Error *local_err = NULL; LinkProperty *prop = g_malloc(sizeof(*prop)); gchar *full_type; + ObjectProperty *op; prop->child = child; prop->check = check; @@ -1192,17 +1207,21 @@ void object_property_add_link(Object *obj, const char *name, full_type = g_strdup_printf("link<%s>", type); - object_property_add(obj, name, full_type, - object_get_link_property, - check ? object_set_link_property : NULL, - object_release_link_property, - prop, - &local_err); + op = object_property_add(obj, name, full_type, + object_get_link_property, + check ? object_set_link_property : NULL, + object_release_link_property, + prop, + &local_err); if (local_err) { error_propagate(errp, local_err); g_free(prop); + goto out; } + op->resolve = object_resolve_link_property; + +out: g_free(full_type); } @@ -1261,11 +1280,8 @@ Object *object_resolve_path_component(Object *parent, const gchar *part) return NULL; } - if (object_property_is_link(prop)) { - LinkProperty *lprop = prop->opaque; - return *lprop->child; - } else if (object_property_is_child(prop)) { - return prop->opaque; + if (prop->resolve) { + return prop->resolve(parent, prop->opaque, part); } else { return NULL; } @@ -1551,6 +1567,77 @@ void object_property_add_uint64_ptr(Object *obj, const char *name, NULL, NULL, (void *)v, errp); } +typedef struct { + Object *target_obj; + const char *target_name; +} AliasProperty; + +static void property_get_alias(Object *obj, struct Visitor *v, void *opaque, + const char *name, Error **errp) +{ + AliasProperty *prop = opaque; + + object_property_get(prop->target_obj, v, prop->target_name, errp); +} + +static void property_set_alias(Object *obj, struct Visitor *v, void *opaque, + const char *name, Error **errp) +{ + AliasProperty *prop = opaque; + + object_property_set(prop->target_obj, v, prop->target_name, errp); +} + +static Object *property_resolve_alias(Object *obj, void *opaque, + const gchar *part) +{ + AliasProperty *prop = opaque; + + return object_resolve_path_component(prop->target_obj, prop->target_name); +} + +static void property_release_alias(Object *obj, const char *name, void *opaque) +{ + AliasProperty *prop = opaque; + + g_free(prop); +} + +void object_property_add_alias(Object *obj, const char *name, + Object *target_obj, const char *target_name, + Error **errp) +{ + AliasProperty *prop; + ObjectProperty *op; + ObjectProperty *target_prop; + gchar *prop_type; + + target_prop = object_property_find(target_obj, target_name, errp); + if (!target_prop) { + return; + } + + if (object_property_is_child(target_prop)) { + prop_type = g_strdup_printf("link%s", + target_prop->type + strlen("child")); + } else { + prop_type = g_strdup(target_prop->type); + } + + prop = g_malloc(sizeof(*prop)); + prop->target_obj = target_obj; + prop->target_name = target_name; + + op = object_property_add(obj, name, prop_type, + property_get_alias, + property_set_alias, + property_release_alias, + prop, errp); + op->resolve = property_resolve_alias; + + g_free(prop_type); +} + static void object_instance_init(Object *obj) { object_property_add_str(obj, "type", qdev_get_type, NULL, NULL); |
