12f28d2ffSAnthony Liguori /* 22f28d2ffSAnthony Liguori * QEMU Object Model 32f28d2ffSAnthony Liguori * 42f28d2ffSAnthony Liguori * Copyright IBM, Corp. 2011 52f28d2ffSAnthony Liguori * 62f28d2ffSAnthony Liguori * Authors: 72f28d2ffSAnthony Liguori * Anthony Liguori <aliguori@us.ibm.com> 82f28d2ffSAnthony Liguori * 92f28d2ffSAnthony Liguori * This work is licensed under the terms of the GNU GPL, version 2 or later. 102f28d2ffSAnthony Liguori * See the COPYING file in the top-level directory. 112f28d2ffSAnthony Liguori */ 122f28d2ffSAnthony Liguori 132f28d2ffSAnthony Liguori #include "qemu/object.h" 142f28d2ffSAnthony Liguori #include "qemu-common.h" 1557c9fafeSAnthony Liguori #include "qapi/qapi-visit-core.h" 162f28d2ffSAnthony Liguori 177b7b7d18SPaolo Bonzini /* TODO: replace QObject with a simpler visitor to avoid a dependency 187b7b7d18SPaolo Bonzini * of the QOM core on QObject? */ 197b7b7d18SPaolo Bonzini #include "qemu/qom-qobject.h" 207b7b7d18SPaolo Bonzini #include "qobject.h" 217b7b7d18SPaolo Bonzini #include "qbool.h" 227b7b7d18SPaolo Bonzini #include "qint.h" 237b7b7d18SPaolo Bonzini #include "qstring.h" 247b7b7d18SPaolo Bonzini 252f28d2ffSAnthony Liguori #define MAX_INTERFACES 32 262f28d2ffSAnthony Liguori 272f28d2ffSAnthony Liguori typedef struct InterfaceImpl InterfaceImpl; 282f28d2ffSAnthony Liguori typedef struct TypeImpl TypeImpl; 292f28d2ffSAnthony Liguori 302f28d2ffSAnthony Liguori struct InterfaceImpl 312f28d2ffSAnthony Liguori { 322f28d2ffSAnthony Liguori const char *parent; 332f28d2ffSAnthony Liguori void (*interface_initfn)(ObjectClass *class, void *data); 342f28d2ffSAnthony Liguori TypeImpl *type; 352f28d2ffSAnthony Liguori }; 362f28d2ffSAnthony Liguori 372f28d2ffSAnthony Liguori struct TypeImpl 382f28d2ffSAnthony Liguori { 392f28d2ffSAnthony Liguori const char *name; 402f28d2ffSAnthony Liguori 412f28d2ffSAnthony Liguori size_t class_size; 422f28d2ffSAnthony Liguori 432f28d2ffSAnthony Liguori size_t instance_size; 442f28d2ffSAnthony Liguori 452f28d2ffSAnthony Liguori void (*class_init)(ObjectClass *klass, void *data); 462f28d2ffSAnthony Liguori void (*class_finalize)(ObjectClass *klass, void *data); 472f28d2ffSAnthony Liguori 482f28d2ffSAnthony Liguori void *class_data; 492f28d2ffSAnthony Liguori 502f28d2ffSAnthony Liguori void (*instance_init)(Object *obj); 512f28d2ffSAnthony Liguori void (*instance_finalize)(Object *obj); 522f28d2ffSAnthony Liguori 532f28d2ffSAnthony Liguori bool abstract; 542f28d2ffSAnthony Liguori 552f28d2ffSAnthony Liguori const char *parent; 562f28d2ffSAnthony Liguori TypeImpl *parent_type; 572f28d2ffSAnthony Liguori 582f28d2ffSAnthony Liguori ObjectClass *class; 592f28d2ffSAnthony Liguori 602f28d2ffSAnthony Liguori int num_interfaces; 612f28d2ffSAnthony Liguori InterfaceImpl interfaces[MAX_INTERFACES]; 622f28d2ffSAnthony Liguori }; 632f28d2ffSAnthony Liguori 642f28d2ffSAnthony Liguori typedef struct Interface 652f28d2ffSAnthony Liguori { 662f28d2ffSAnthony Liguori Object parent; 672f28d2ffSAnthony Liguori Object *obj; 682f28d2ffSAnthony Liguori } Interface; 692f28d2ffSAnthony Liguori 702f28d2ffSAnthony Liguori #define INTERFACE(obj) OBJECT_CHECK(Interface, obj, TYPE_INTERFACE) 712f28d2ffSAnthony Liguori 729970bd88SPaolo Bonzini static Type type_interface; 739970bd88SPaolo Bonzini 742f28d2ffSAnthony Liguori static GHashTable *type_table_get(void) 752f28d2ffSAnthony Liguori { 762f28d2ffSAnthony Liguori static GHashTable *type_table; 772f28d2ffSAnthony Liguori 782f28d2ffSAnthony Liguori if (type_table == NULL) { 792f28d2ffSAnthony Liguori type_table = g_hash_table_new(g_str_hash, g_str_equal); 802f28d2ffSAnthony Liguori } 812f28d2ffSAnthony Liguori 822f28d2ffSAnthony Liguori return type_table; 832f28d2ffSAnthony Liguori } 842f28d2ffSAnthony Liguori 852f28d2ffSAnthony Liguori static void type_table_add(TypeImpl *ti) 862f28d2ffSAnthony Liguori { 872f28d2ffSAnthony Liguori g_hash_table_insert(type_table_get(), (void *)ti->name, ti); 882f28d2ffSAnthony Liguori } 892f28d2ffSAnthony Liguori 902f28d2ffSAnthony Liguori static TypeImpl *type_table_lookup(const char *name) 912f28d2ffSAnthony Liguori { 922f28d2ffSAnthony Liguori return g_hash_table_lookup(type_table_get(), name); 932f28d2ffSAnthony Liguori } 942f28d2ffSAnthony Liguori 952f28d2ffSAnthony Liguori TypeImpl *type_register(const TypeInfo *info) 962f28d2ffSAnthony Liguori { 972f28d2ffSAnthony Liguori TypeImpl *ti = g_malloc0(sizeof(*ti)); 982f28d2ffSAnthony Liguori 992f28d2ffSAnthony Liguori g_assert(info->name != NULL); 1002f28d2ffSAnthony Liguori 10173093354SAnthony Liguori if (type_table_lookup(info->name) != NULL) { 10273093354SAnthony Liguori fprintf(stderr, "Registering `%s' which already exists\n", info->name); 10373093354SAnthony Liguori abort(); 10473093354SAnthony Liguori } 10573093354SAnthony Liguori 1062f28d2ffSAnthony Liguori ti->name = g_strdup(info->name); 1072f28d2ffSAnthony Liguori ti->parent = g_strdup(info->parent); 1082f28d2ffSAnthony Liguori 1092f28d2ffSAnthony Liguori ti->class_size = info->class_size; 1102f28d2ffSAnthony Liguori ti->instance_size = info->instance_size; 1112f28d2ffSAnthony Liguori 1122f28d2ffSAnthony Liguori ti->class_init = info->class_init; 1132f28d2ffSAnthony Liguori ti->class_finalize = info->class_finalize; 1142f28d2ffSAnthony Liguori ti->class_data = info->class_data; 1152f28d2ffSAnthony Liguori 1162f28d2ffSAnthony Liguori ti->instance_init = info->instance_init; 1172f28d2ffSAnthony Liguori ti->instance_finalize = info->instance_finalize; 1182f28d2ffSAnthony Liguori 1192f28d2ffSAnthony Liguori ti->abstract = info->abstract; 1202f28d2ffSAnthony Liguori 1212f28d2ffSAnthony Liguori if (info->interfaces) { 1222f28d2ffSAnthony Liguori int i; 1232f28d2ffSAnthony Liguori 1242f28d2ffSAnthony Liguori for (i = 0; info->interfaces[i].type; i++) { 1252f28d2ffSAnthony Liguori ti->interfaces[i].parent = info->interfaces[i].type; 1262f28d2ffSAnthony Liguori ti->interfaces[i].interface_initfn = info->interfaces[i].interface_initfn; 1272f28d2ffSAnthony Liguori ti->num_interfaces++; 1282f28d2ffSAnthony Liguori } 1292f28d2ffSAnthony Liguori } 1302f28d2ffSAnthony Liguori 1312f28d2ffSAnthony Liguori type_table_add(ti); 1322f28d2ffSAnthony Liguori 1332f28d2ffSAnthony Liguori return ti; 1342f28d2ffSAnthony Liguori } 1352f28d2ffSAnthony Liguori 1362f28d2ffSAnthony Liguori TypeImpl *type_register_static(const TypeInfo *info) 1372f28d2ffSAnthony Liguori { 1382f28d2ffSAnthony Liguori return type_register(info); 1392f28d2ffSAnthony Liguori } 1402f28d2ffSAnthony Liguori 1412f28d2ffSAnthony Liguori static TypeImpl *type_get_by_name(const char *name) 1422f28d2ffSAnthony Liguori { 1432f28d2ffSAnthony Liguori if (name == NULL) { 1442f28d2ffSAnthony Liguori return NULL; 1452f28d2ffSAnthony Liguori } 1462f28d2ffSAnthony Liguori 1472f28d2ffSAnthony Liguori return type_table_lookup(name); 1482f28d2ffSAnthony Liguori } 1492f28d2ffSAnthony Liguori 1502f28d2ffSAnthony Liguori static TypeImpl *type_get_parent(TypeImpl *type) 1512f28d2ffSAnthony Liguori { 1522f28d2ffSAnthony Liguori if (!type->parent_type && type->parent) { 1532f28d2ffSAnthony Liguori type->parent_type = type_get_by_name(type->parent); 1542f28d2ffSAnthony Liguori g_assert(type->parent_type != NULL); 1552f28d2ffSAnthony Liguori } 1562f28d2ffSAnthony Liguori 1572f28d2ffSAnthony Liguori return type->parent_type; 1582f28d2ffSAnthony Liguori } 1592f28d2ffSAnthony Liguori 1602f28d2ffSAnthony Liguori static bool type_has_parent(TypeImpl *type) 1612f28d2ffSAnthony Liguori { 1622f28d2ffSAnthony Liguori return (type->parent != NULL); 1632f28d2ffSAnthony Liguori } 1642f28d2ffSAnthony Liguori 1652f28d2ffSAnthony Liguori static size_t type_class_get_size(TypeImpl *ti) 1662f28d2ffSAnthony Liguori { 1672f28d2ffSAnthony Liguori if (ti->class_size) { 1682f28d2ffSAnthony Liguori return ti->class_size; 1692f28d2ffSAnthony Liguori } 1702f28d2ffSAnthony Liguori 1712f28d2ffSAnthony Liguori if (type_has_parent(ti)) { 1722f28d2ffSAnthony Liguori return type_class_get_size(type_get_parent(ti)); 1732f28d2ffSAnthony Liguori } 1742f28d2ffSAnthony Liguori 1752f28d2ffSAnthony Liguori return sizeof(ObjectClass); 1762f28d2ffSAnthony Liguori } 1772f28d2ffSAnthony Liguori 1782f28d2ffSAnthony Liguori static void type_class_interface_init(TypeImpl *ti, InterfaceImpl *iface) 1792f28d2ffSAnthony Liguori { 1802f28d2ffSAnthony Liguori TypeInfo info = { 1812f28d2ffSAnthony Liguori .instance_size = sizeof(Interface), 1822f28d2ffSAnthony Liguori .parent = iface->parent, 1832f28d2ffSAnthony Liguori .class_size = sizeof(InterfaceClass), 1842f28d2ffSAnthony Liguori .class_init = iface->interface_initfn, 1852f28d2ffSAnthony Liguori .abstract = true, 1862f28d2ffSAnthony Liguori }; 1872f28d2ffSAnthony Liguori char *name = g_strdup_printf("<%s::%s>", ti->name, iface->parent); 1882f28d2ffSAnthony Liguori 1892f28d2ffSAnthony Liguori info.name = name; 1902f28d2ffSAnthony Liguori iface->type = type_register(&info); 1912f28d2ffSAnthony Liguori g_free(name); 1922f28d2ffSAnthony Liguori } 1932f28d2ffSAnthony Liguori 1942f28d2ffSAnthony Liguori static void type_class_init(TypeImpl *ti) 1952f28d2ffSAnthony Liguori { 1962f28d2ffSAnthony Liguori size_t class_size = sizeof(ObjectClass); 1972f28d2ffSAnthony Liguori int i; 1982f28d2ffSAnthony Liguori 1992f28d2ffSAnthony Liguori if (ti->class) { 2002f28d2ffSAnthony Liguori return; 2012f28d2ffSAnthony Liguori } 2022f28d2ffSAnthony Liguori 2032f28d2ffSAnthony Liguori ti->class_size = type_class_get_size(ti); 2042f28d2ffSAnthony Liguori 2052f28d2ffSAnthony Liguori ti->class = g_malloc0(ti->class_size); 2062f28d2ffSAnthony Liguori ti->class->type = ti; 2072f28d2ffSAnthony Liguori 2082f28d2ffSAnthony Liguori if (type_has_parent(ti)) { 2092f28d2ffSAnthony Liguori TypeImpl *parent = type_get_parent(ti); 2102f28d2ffSAnthony Liguori 2112f28d2ffSAnthony Liguori type_class_init(parent); 2122f28d2ffSAnthony Liguori 2132f28d2ffSAnthony Liguori class_size = parent->class_size; 2142f28d2ffSAnthony Liguori g_assert(parent->class_size <= ti->class_size); 2152f28d2ffSAnthony Liguori 2162f28d2ffSAnthony Liguori memcpy((void *)ti->class + sizeof(ObjectClass), 2172f28d2ffSAnthony Liguori (void *)parent->class + sizeof(ObjectClass), 2182f28d2ffSAnthony Liguori parent->class_size - sizeof(ObjectClass)); 2192f28d2ffSAnthony Liguori } 2202f28d2ffSAnthony Liguori 2212f28d2ffSAnthony Liguori memset((void *)ti->class + class_size, 0, ti->class_size - class_size); 2222f28d2ffSAnthony Liguori 2232f28d2ffSAnthony Liguori for (i = 0; i < ti->num_interfaces; i++) { 2242f28d2ffSAnthony Liguori type_class_interface_init(ti, &ti->interfaces[i]); 2252f28d2ffSAnthony Liguori } 2262f28d2ffSAnthony Liguori 2272f28d2ffSAnthony Liguori if (ti->class_init) { 2282f28d2ffSAnthony Liguori ti->class_init(ti->class, ti->class_data); 2292f28d2ffSAnthony Liguori } 2302f28d2ffSAnthony Liguori } 2312f28d2ffSAnthony Liguori 2322f28d2ffSAnthony Liguori static void object_interface_init(Object *obj, InterfaceImpl *iface) 2332f28d2ffSAnthony Liguori { 2342f28d2ffSAnthony Liguori TypeImpl *ti = iface->type; 2352f28d2ffSAnthony Liguori Interface *iface_obj; 2362f28d2ffSAnthony Liguori 2372f28d2ffSAnthony Liguori iface_obj = INTERFACE(object_new(ti->name)); 2382f28d2ffSAnthony Liguori iface_obj->obj = obj; 2392f28d2ffSAnthony Liguori 2402f28d2ffSAnthony Liguori obj->interfaces = g_slist_prepend(obj->interfaces, iface_obj); 2412f28d2ffSAnthony Liguori } 2422f28d2ffSAnthony Liguori 2432f28d2ffSAnthony Liguori static void object_init_with_type(Object *obj, TypeImpl *ti) 2442f28d2ffSAnthony Liguori { 2452f28d2ffSAnthony Liguori int i; 2462f28d2ffSAnthony Liguori 2472f28d2ffSAnthony Liguori if (type_has_parent(ti)) { 2482f28d2ffSAnthony Liguori object_init_with_type(obj, type_get_parent(ti)); 2492f28d2ffSAnthony Liguori } 2502f28d2ffSAnthony Liguori 2512f28d2ffSAnthony Liguori for (i = 0; i < ti->num_interfaces; i++) { 2522f28d2ffSAnthony Liguori object_interface_init(obj, &ti->interfaces[i]); 2532f28d2ffSAnthony Liguori } 2542f28d2ffSAnthony Liguori 2552f28d2ffSAnthony Liguori if (ti->instance_init) { 2562f28d2ffSAnthony Liguori ti->instance_init(obj); 2572f28d2ffSAnthony Liguori } 2582f28d2ffSAnthony Liguori } 2592f28d2ffSAnthony Liguori 2602f28d2ffSAnthony Liguori void object_initialize_with_type(void *data, TypeImpl *type) 2612f28d2ffSAnthony Liguori { 2622f28d2ffSAnthony Liguori Object *obj = data; 2632f28d2ffSAnthony Liguori 2642f28d2ffSAnthony Liguori g_assert(type != NULL); 2652f28d2ffSAnthony Liguori g_assert(type->instance_size >= sizeof(ObjectClass)); 2662f28d2ffSAnthony Liguori 2672f28d2ffSAnthony Liguori type_class_init(type); 2682f28d2ffSAnthony Liguori g_assert(type->abstract == false); 2692f28d2ffSAnthony Liguori 2702f28d2ffSAnthony Liguori memset(obj, 0, type->instance_size); 2712f28d2ffSAnthony Liguori obj->class = type->class; 27257c9fafeSAnthony Liguori QTAILQ_INIT(&obj->properties); 2732f28d2ffSAnthony Liguori object_init_with_type(obj, type); 2742f28d2ffSAnthony Liguori } 2752f28d2ffSAnthony Liguori 2762f28d2ffSAnthony Liguori void object_initialize(void *data, const char *typename) 2772f28d2ffSAnthony Liguori { 2782f28d2ffSAnthony Liguori TypeImpl *type = type_get_by_name(typename); 2792f28d2ffSAnthony Liguori 2802f28d2ffSAnthony Liguori object_initialize_with_type(data, type); 2812f28d2ffSAnthony Liguori } 2822f28d2ffSAnthony Liguori 28357c9fafeSAnthony Liguori static void object_property_del_all(Object *obj) 28457c9fafeSAnthony Liguori { 28557c9fafeSAnthony Liguori while (!QTAILQ_EMPTY(&obj->properties)) { 28657c9fafeSAnthony Liguori ObjectProperty *prop = QTAILQ_FIRST(&obj->properties); 28757c9fafeSAnthony Liguori 28857c9fafeSAnthony Liguori QTAILQ_REMOVE(&obj->properties, prop, node); 28957c9fafeSAnthony Liguori 29057c9fafeSAnthony Liguori if (prop->release) { 29157c9fafeSAnthony Liguori prop->release(obj, prop->name, prop->opaque); 29257c9fafeSAnthony Liguori } 29357c9fafeSAnthony Liguori 29457c9fafeSAnthony Liguori g_free(prop->name); 29557c9fafeSAnthony Liguori g_free(prop->type); 29657c9fafeSAnthony Liguori g_free(prop); 29757c9fafeSAnthony Liguori } 29857c9fafeSAnthony Liguori } 29957c9fafeSAnthony Liguori 30057c9fafeSAnthony Liguori static void object_property_del_child(Object *obj, Object *child, Error **errp) 30157c9fafeSAnthony Liguori { 30257c9fafeSAnthony Liguori ObjectProperty *prop; 30357c9fafeSAnthony Liguori 30457c9fafeSAnthony Liguori QTAILQ_FOREACH(prop, &obj->properties, node) { 30557c9fafeSAnthony Liguori if (!strstart(prop->type, "child<", NULL)) { 30657c9fafeSAnthony Liguori continue; 30757c9fafeSAnthony Liguori } 30857c9fafeSAnthony Liguori 30957c9fafeSAnthony Liguori if (prop->opaque == child) { 31057c9fafeSAnthony Liguori object_property_del(obj, prop->name, errp); 31157c9fafeSAnthony Liguori } 31257c9fafeSAnthony Liguori } 31357c9fafeSAnthony Liguori } 31457c9fafeSAnthony Liguori 31557c9fafeSAnthony Liguori void object_unparent(Object *obj) 31657c9fafeSAnthony Liguori { 31757c9fafeSAnthony Liguori if (obj->parent) { 31857c9fafeSAnthony Liguori object_property_del_child(obj->parent, obj, NULL); 31957c9fafeSAnthony Liguori } 32057c9fafeSAnthony Liguori } 32157c9fafeSAnthony Liguori 3222f28d2ffSAnthony Liguori static void object_deinit(Object *obj, TypeImpl *type) 3232f28d2ffSAnthony Liguori { 3242f28d2ffSAnthony Liguori if (type->instance_finalize) { 3252f28d2ffSAnthony Liguori type->instance_finalize(obj); 3262f28d2ffSAnthony Liguori } 3272f28d2ffSAnthony Liguori 3282f28d2ffSAnthony Liguori while (obj->interfaces) { 3292f28d2ffSAnthony Liguori Interface *iface_obj = obj->interfaces->data; 3302f28d2ffSAnthony Liguori obj->interfaces = g_slist_delete_link(obj->interfaces, obj->interfaces); 3312f28d2ffSAnthony Liguori object_delete(OBJECT(iface_obj)); 3322f28d2ffSAnthony Liguori } 3332f28d2ffSAnthony Liguori 3342f28d2ffSAnthony Liguori if (type_has_parent(type)) { 3352f28d2ffSAnthony Liguori object_deinit(obj, type_get_parent(type)); 3362f28d2ffSAnthony Liguori } 33757c9fafeSAnthony Liguori 33857c9fafeSAnthony Liguori object_unparent(obj); 3392f28d2ffSAnthony Liguori } 3402f28d2ffSAnthony Liguori 3412f28d2ffSAnthony Liguori void object_finalize(void *data) 3422f28d2ffSAnthony Liguori { 3432f28d2ffSAnthony Liguori Object *obj = data; 3442f28d2ffSAnthony Liguori TypeImpl *ti = obj->class->type; 3452f28d2ffSAnthony Liguori 3462f28d2ffSAnthony Liguori object_deinit(obj, ti); 34757c9fafeSAnthony Liguori object_property_del_all(obj); 348db85b575SAnthony Liguori 349db85b575SAnthony Liguori g_assert(obj->ref == 0); 3502f28d2ffSAnthony Liguori } 3512f28d2ffSAnthony Liguori 3522f28d2ffSAnthony Liguori Object *object_new_with_type(Type type) 3532f28d2ffSAnthony Liguori { 3542f28d2ffSAnthony Liguori Object *obj; 3552f28d2ffSAnthony Liguori 3562f28d2ffSAnthony Liguori g_assert(type != NULL); 3572f28d2ffSAnthony Liguori 3582f28d2ffSAnthony Liguori obj = g_malloc(type->instance_size); 3592f28d2ffSAnthony Liguori object_initialize_with_type(obj, type); 360db85b575SAnthony Liguori object_ref(obj); 3612f28d2ffSAnthony Liguori 3622f28d2ffSAnthony Liguori return obj; 3632f28d2ffSAnthony Liguori } 3642f28d2ffSAnthony Liguori 3652f28d2ffSAnthony Liguori Object *object_new(const char *typename) 3662f28d2ffSAnthony Liguori { 3672f28d2ffSAnthony Liguori TypeImpl *ti = type_get_by_name(typename); 3682f28d2ffSAnthony Liguori 3692f28d2ffSAnthony Liguori return object_new_with_type(ti); 3702f28d2ffSAnthony Liguori } 3712f28d2ffSAnthony Liguori 3722f28d2ffSAnthony Liguori void object_delete(Object *obj) 3732f28d2ffSAnthony Liguori { 374db85b575SAnthony Liguori object_unref(obj); 375db85b575SAnthony Liguori g_assert(obj->ref == 0); 3762f28d2ffSAnthony Liguori g_free(obj); 3772f28d2ffSAnthony Liguori } 3782f28d2ffSAnthony Liguori 379acc4af3fSPaolo Bonzini static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type) 3802f28d2ffSAnthony Liguori { 381acc4af3fSPaolo Bonzini assert(target_type); 3822f28d2ffSAnthony Liguori 3832f28d2ffSAnthony Liguori /* Check if typename is a direct ancestor of type */ 3842f28d2ffSAnthony Liguori while (type) { 3852f28d2ffSAnthony Liguori if (type == target_type) { 3862f28d2ffSAnthony Liguori return true; 3872f28d2ffSAnthony Liguori } 3882f28d2ffSAnthony Liguori 3892f28d2ffSAnthony Liguori type = type_get_parent(type); 3902f28d2ffSAnthony Liguori } 3912f28d2ffSAnthony Liguori 392acc4af3fSPaolo Bonzini return false; 393acc4af3fSPaolo Bonzini } 3942f28d2ffSAnthony Liguori 3959970bd88SPaolo Bonzini static bool object_is_type(Object *obj, TypeImpl *target_type) 396acc4af3fSPaolo Bonzini { 3979970bd88SPaolo Bonzini return !target_type || type_is_ancestor(obj->class->type, target_type); 3982f28d2ffSAnthony Liguori } 3992f28d2ffSAnthony Liguori 4002f28d2ffSAnthony Liguori Object *object_dynamic_cast(Object *obj, const char *typename) 4012f28d2ffSAnthony Liguori { 4029970bd88SPaolo Bonzini TypeImpl *target_type = type_get_by_name(typename); 4032f28d2ffSAnthony Liguori GSList *i; 4042f28d2ffSAnthony Liguori 405acc4af3fSPaolo Bonzini /* Check if typename is a direct ancestor. Special-case TYPE_OBJECT, 406acc4af3fSPaolo Bonzini * we want to go back from interfaces to the parent. 407acc4af3fSPaolo Bonzini */ 4089970bd88SPaolo Bonzini if (target_type && object_is_type(obj, target_type)) { 409acc4af3fSPaolo Bonzini return obj; 410acc4af3fSPaolo Bonzini } 411acc4af3fSPaolo Bonzini 412acc4af3fSPaolo Bonzini /* Check if obj is an interface and its containing object is a direct 413acc4af3fSPaolo Bonzini * ancestor of typename. In principle we could do this test at the very 414acc4af3fSPaolo Bonzini * beginning of object_dynamic_cast, avoiding a second call to 415acc4af3fSPaolo Bonzini * object_is_type. However, casting between interfaces is relatively 4169970bd88SPaolo Bonzini * rare, and object_is_type(obj, type_interface) would fail almost always. 417acc4af3fSPaolo Bonzini * 418acc4af3fSPaolo Bonzini * Perhaps we could add a magic value to the object header for increased 419acc4af3fSPaolo Bonzini * (run-time) type safety and to speed up tests like this one. If we ever 420acc4af3fSPaolo Bonzini * do that we can revisit the order here. 421acc4af3fSPaolo Bonzini */ 4229970bd88SPaolo Bonzini if (object_is_type(obj, type_interface)) { 423acc4af3fSPaolo Bonzini assert(!obj->interfaces); 424acc4af3fSPaolo Bonzini obj = INTERFACE(obj)->obj; 4259970bd88SPaolo Bonzini if (object_is_type(obj, target_type)) { 4262f28d2ffSAnthony Liguori return obj; 4272f28d2ffSAnthony Liguori } 428acc4af3fSPaolo Bonzini } 429acc4af3fSPaolo Bonzini 4309970bd88SPaolo Bonzini if (!target_type) { 431acc4af3fSPaolo Bonzini return obj; 432acc4af3fSPaolo Bonzini } 4332f28d2ffSAnthony Liguori 4342f28d2ffSAnthony Liguori /* Check if obj has an interface of typename */ 4352f28d2ffSAnthony Liguori for (i = obj->interfaces; i; i = i->next) { 4362f28d2ffSAnthony Liguori Interface *iface = i->data; 4372f28d2ffSAnthony Liguori 4389970bd88SPaolo Bonzini if (object_is_type(OBJECT(iface), target_type)) { 4392f28d2ffSAnthony Liguori return OBJECT(iface); 4402f28d2ffSAnthony Liguori } 4412f28d2ffSAnthony Liguori } 4422f28d2ffSAnthony Liguori 4432f28d2ffSAnthony Liguori return NULL; 4442f28d2ffSAnthony Liguori } 4452f28d2ffSAnthony Liguori 4462f28d2ffSAnthony Liguori 4472f28d2ffSAnthony Liguori static void register_interface(void) 4482f28d2ffSAnthony Liguori { 4492f28d2ffSAnthony Liguori static TypeInfo interface_info = { 4502f28d2ffSAnthony Liguori .name = TYPE_INTERFACE, 4512f28d2ffSAnthony Liguori .instance_size = sizeof(Interface), 4522f28d2ffSAnthony Liguori .abstract = true, 4532f28d2ffSAnthony Liguori }; 4542f28d2ffSAnthony Liguori 4559970bd88SPaolo Bonzini type_interface = type_register_static(&interface_info); 4562f28d2ffSAnthony Liguori } 4572f28d2ffSAnthony Liguori 4582f28d2ffSAnthony Liguori device_init(register_interface); 4592f28d2ffSAnthony Liguori 4602f28d2ffSAnthony Liguori Object *object_dynamic_cast_assert(Object *obj, const char *typename) 4612f28d2ffSAnthony Liguori { 4622f28d2ffSAnthony Liguori Object *inst; 4632f28d2ffSAnthony Liguori 4642f28d2ffSAnthony Liguori inst = object_dynamic_cast(obj, typename); 4652f28d2ffSAnthony Liguori 4662f28d2ffSAnthony Liguori if (!inst) { 4672f28d2ffSAnthony Liguori fprintf(stderr, "Object %p is not an instance of type %s\n", 4682f28d2ffSAnthony Liguori obj, typename); 4692f28d2ffSAnthony Liguori abort(); 4702f28d2ffSAnthony Liguori } 4712f28d2ffSAnthony Liguori 4722f28d2ffSAnthony Liguori return inst; 4732f28d2ffSAnthony Liguori } 4742f28d2ffSAnthony Liguori 4752f28d2ffSAnthony Liguori ObjectClass *object_class_dynamic_cast(ObjectClass *class, 4762f28d2ffSAnthony Liguori const char *typename) 4772f28d2ffSAnthony Liguori { 4782f28d2ffSAnthony Liguori TypeImpl *target_type = type_get_by_name(typename); 4792f28d2ffSAnthony Liguori TypeImpl *type = class->type; 4802f28d2ffSAnthony Liguori 4812f28d2ffSAnthony Liguori while (type) { 4822f28d2ffSAnthony Liguori if (type == target_type) { 4832f28d2ffSAnthony Liguori return class; 4842f28d2ffSAnthony Liguori } 4852f28d2ffSAnthony Liguori 4862f28d2ffSAnthony Liguori type = type_get_parent(type); 4872f28d2ffSAnthony Liguori } 4882f28d2ffSAnthony Liguori 4892f28d2ffSAnthony Liguori return NULL; 4902f28d2ffSAnthony Liguori } 4912f28d2ffSAnthony Liguori 4922f28d2ffSAnthony Liguori ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class, 4932f28d2ffSAnthony Liguori const char *typename) 4942f28d2ffSAnthony Liguori { 4952f28d2ffSAnthony Liguori ObjectClass *ret = object_class_dynamic_cast(class, typename); 4962f28d2ffSAnthony Liguori 4972f28d2ffSAnthony Liguori if (!ret) { 4982f28d2ffSAnthony Liguori fprintf(stderr, "Object %p is not an instance of type %s\n", 4992f28d2ffSAnthony Liguori class, typename); 5002f28d2ffSAnthony Liguori abort(); 5012f28d2ffSAnthony Liguori } 5022f28d2ffSAnthony Liguori 5032f28d2ffSAnthony Liguori return ret; 5042f28d2ffSAnthony Liguori } 5052f28d2ffSAnthony Liguori 5062f28d2ffSAnthony Liguori const char *object_get_typename(Object *obj) 5072f28d2ffSAnthony Liguori { 5082f28d2ffSAnthony Liguori return obj->class->type->name; 5092f28d2ffSAnthony Liguori } 5102f28d2ffSAnthony Liguori 5112f28d2ffSAnthony Liguori ObjectClass *object_get_class(Object *obj) 5122f28d2ffSAnthony Liguori { 5132f28d2ffSAnthony Liguori return obj->class; 5142f28d2ffSAnthony Liguori } 5152f28d2ffSAnthony Liguori 5162f28d2ffSAnthony Liguori const char *object_class_get_name(ObjectClass *klass) 5172f28d2ffSAnthony Liguori { 5182f28d2ffSAnthony Liguori return klass->type->name; 5192f28d2ffSAnthony Liguori } 5202f28d2ffSAnthony Liguori 5212f28d2ffSAnthony Liguori ObjectClass *object_class_by_name(const char *typename) 5222f28d2ffSAnthony Liguori { 5232f28d2ffSAnthony Liguori TypeImpl *type = type_get_by_name(typename); 5242f28d2ffSAnthony Liguori 5252f28d2ffSAnthony Liguori if (!type) { 5262f28d2ffSAnthony Liguori return NULL; 5272f28d2ffSAnthony Liguori } 5282f28d2ffSAnthony Liguori 5292f28d2ffSAnthony Liguori type_class_init(type); 5302f28d2ffSAnthony Liguori 5312f28d2ffSAnthony Liguori return type->class; 5322f28d2ffSAnthony Liguori } 5332f28d2ffSAnthony Liguori 5342f28d2ffSAnthony Liguori typedef struct OCFData 5352f28d2ffSAnthony Liguori { 5362f28d2ffSAnthony Liguori void (*fn)(ObjectClass *klass, void *opaque); 53793c511a1SAnthony Liguori const char *implements_type; 53893c511a1SAnthony Liguori bool include_abstract; 5392f28d2ffSAnthony Liguori void *opaque; 5402f28d2ffSAnthony Liguori } OCFData; 5412f28d2ffSAnthony Liguori 5422f28d2ffSAnthony Liguori static void object_class_foreach_tramp(gpointer key, gpointer value, 5432f28d2ffSAnthony Liguori gpointer opaque) 5442f28d2ffSAnthony Liguori { 5452f28d2ffSAnthony Liguori OCFData *data = opaque; 5462f28d2ffSAnthony Liguori TypeImpl *type = value; 54793c511a1SAnthony Liguori ObjectClass *k; 5482f28d2ffSAnthony Liguori 5492f28d2ffSAnthony Liguori type_class_init(type); 55093c511a1SAnthony Liguori k = type->class; 5512f28d2ffSAnthony Liguori 55293c511a1SAnthony Liguori if (!data->include_abstract && type->abstract) { 55393c511a1SAnthony Liguori return; 55493c511a1SAnthony Liguori } 55593c511a1SAnthony Liguori 55693c511a1SAnthony Liguori if (data->implements_type && 55793c511a1SAnthony Liguori !object_class_dynamic_cast(k, data->implements_type)) { 55893c511a1SAnthony Liguori return; 55993c511a1SAnthony Liguori } 56093c511a1SAnthony Liguori 56193c511a1SAnthony Liguori data->fn(k, data->opaque); 5622f28d2ffSAnthony Liguori } 5632f28d2ffSAnthony Liguori 5642f28d2ffSAnthony Liguori void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), 56593c511a1SAnthony Liguori const char *implements_type, bool include_abstract, 5662f28d2ffSAnthony Liguori void *opaque) 5672f28d2ffSAnthony Liguori { 56893c511a1SAnthony Liguori OCFData data = { fn, implements_type, include_abstract, opaque }; 5692f28d2ffSAnthony Liguori 5702f28d2ffSAnthony Liguori g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data); 5712f28d2ffSAnthony Liguori } 57257c9fafeSAnthony Liguori 57357c9fafeSAnthony Liguori void object_ref(Object *obj) 57457c9fafeSAnthony Liguori { 57557c9fafeSAnthony Liguori obj->ref++; 57657c9fafeSAnthony Liguori } 57757c9fafeSAnthony Liguori 57857c9fafeSAnthony Liguori void object_unref(Object *obj) 57957c9fafeSAnthony Liguori { 58057c9fafeSAnthony Liguori g_assert(obj->ref > 0); 58157c9fafeSAnthony Liguori obj->ref--; 58257c9fafeSAnthony Liguori 58357c9fafeSAnthony Liguori /* parent always holds a reference to its children */ 58457c9fafeSAnthony Liguori if (obj->ref == 0) { 58557c9fafeSAnthony Liguori object_finalize(obj); 58657c9fafeSAnthony Liguori } 58757c9fafeSAnthony Liguori } 58857c9fafeSAnthony Liguori 58957c9fafeSAnthony Liguori void object_property_add(Object *obj, const char *name, const char *type, 59057c9fafeSAnthony Liguori ObjectPropertyAccessor *get, 59157c9fafeSAnthony Liguori ObjectPropertyAccessor *set, 59257c9fafeSAnthony Liguori ObjectPropertyRelease *release, 59357c9fafeSAnthony Liguori void *opaque, Error **errp) 59457c9fafeSAnthony Liguori { 59557c9fafeSAnthony Liguori ObjectProperty *prop = g_malloc0(sizeof(*prop)); 59657c9fafeSAnthony Liguori 59757c9fafeSAnthony Liguori prop->name = g_strdup(name); 59857c9fafeSAnthony Liguori prop->type = g_strdup(type); 59957c9fafeSAnthony Liguori 60057c9fafeSAnthony Liguori prop->get = get; 60157c9fafeSAnthony Liguori prop->set = set; 60257c9fafeSAnthony Liguori prop->release = release; 60357c9fafeSAnthony Liguori prop->opaque = opaque; 60457c9fafeSAnthony Liguori 60557c9fafeSAnthony Liguori QTAILQ_INSERT_TAIL(&obj->properties, prop, node); 60657c9fafeSAnthony Liguori } 60757c9fafeSAnthony Liguori 60857c9fafeSAnthony Liguori static ObjectProperty *object_property_find(Object *obj, const char *name) 60957c9fafeSAnthony Liguori { 61057c9fafeSAnthony Liguori ObjectProperty *prop; 61157c9fafeSAnthony Liguori 61257c9fafeSAnthony Liguori QTAILQ_FOREACH(prop, &obj->properties, node) { 61357c9fafeSAnthony Liguori if (strcmp(prop->name, name) == 0) { 61457c9fafeSAnthony Liguori return prop; 61557c9fafeSAnthony Liguori } 61657c9fafeSAnthony Liguori } 61757c9fafeSAnthony Liguori 61857c9fafeSAnthony Liguori return NULL; 61957c9fafeSAnthony Liguori } 62057c9fafeSAnthony Liguori 62157c9fafeSAnthony Liguori void object_property_del(Object *obj, const char *name, Error **errp) 62257c9fafeSAnthony Liguori { 62357c9fafeSAnthony Liguori ObjectProperty *prop = object_property_find(obj, name); 62457c9fafeSAnthony Liguori 62557c9fafeSAnthony Liguori QTAILQ_REMOVE(&obj->properties, prop, node); 62657c9fafeSAnthony Liguori 62757c9fafeSAnthony Liguori prop->release(obj, prop->name, prop->opaque); 62857c9fafeSAnthony Liguori 62957c9fafeSAnthony Liguori g_free(prop->name); 63057c9fafeSAnthony Liguori g_free(prop->type); 63157c9fafeSAnthony Liguori g_free(prop); 63257c9fafeSAnthony Liguori } 63357c9fafeSAnthony Liguori 63457c9fafeSAnthony Liguori void object_property_get(Object *obj, Visitor *v, const char *name, 63557c9fafeSAnthony Liguori Error **errp) 63657c9fafeSAnthony Liguori { 63757c9fafeSAnthony Liguori ObjectProperty *prop = object_property_find(obj, name); 63857c9fafeSAnthony Liguori 63957c9fafeSAnthony Liguori if (prop == NULL) { 64057c9fafeSAnthony Liguori error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name); 64157c9fafeSAnthony Liguori return; 64257c9fafeSAnthony Liguori } 64357c9fafeSAnthony Liguori 64457c9fafeSAnthony Liguori if (!prop->get) { 64557c9fafeSAnthony Liguori error_set(errp, QERR_PERMISSION_DENIED); 64657c9fafeSAnthony Liguori } else { 64757c9fafeSAnthony Liguori prop->get(obj, v, prop->opaque, name, errp); 64857c9fafeSAnthony Liguori } 64957c9fafeSAnthony Liguori } 65057c9fafeSAnthony Liguori 65157c9fafeSAnthony Liguori void object_property_set(Object *obj, Visitor *v, const char *name, 65257c9fafeSAnthony Liguori Error **errp) 65357c9fafeSAnthony Liguori { 65457c9fafeSAnthony Liguori ObjectProperty *prop = object_property_find(obj, name); 65557c9fafeSAnthony Liguori 65657c9fafeSAnthony Liguori if (prop == NULL) { 65757c9fafeSAnthony Liguori error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name); 65857c9fafeSAnthony Liguori return; 65957c9fafeSAnthony Liguori } 66057c9fafeSAnthony Liguori 66157c9fafeSAnthony Liguori if (!prop->set) { 66257c9fafeSAnthony Liguori error_set(errp, QERR_PERMISSION_DENIED); 66357c9fafeSAnthony Liguori } else { 66457c9fafeSAnthony Liguori prop->set(obj, v, prop->opaque, name, errp); 66557c9fafeSAnthony Liguori } 66657c9fafeSAnthony Liguori } 66757c9fafeSAnthony Liguori 6687b7b7d18SPaolo Bonzini void object_property_set_str(Object *obj, const char *value, 6697b7b7d18SPaolo Bonzini const char *name, Error **errp) 6707b7b7d18SPaolo Bonzini { 6717b7b7d18SPaolo Bonzini QString *qstr = qstring_from_str(value); 6727b7b7d18SPaolo Bonzini object_property_set_qobject(obj, QOBJECT(qstr), name, errp); 6737b7b7d18SPaolo Bonzini 6747b7b7d18SPaolo Bonzini QDECREF(qstr); 6757b7b7d18SPaolo Bonzini } 6767b7b7d18SPaolo Bonzini 6777b7b7d18SPaolo Bonzini char *object_property_get_str(Object *obj, const char *name, 6787b7b7d18SPaolo Bonzini Error **errp) 6797b7b7d18SPaolo Bonzini { 6807b7b7d18SPaolo Bonzini QObject *ret = object_property_get_qobject(obj, name, errp); 6817b7b7d18SPaolo Bonzini QString *qstring; 6827b7b7d18SPaolo Bonzini char *retval; 6837b7b7d18SPaolo Bonzini 6847b7b7d18SPaolo Bonzini if (!ret) { 6857b7b7d18SPaolo Bonzini return NULL; 6867b7b7d18SPaolo Bonzini } 6877b7b7d18SPaolo Bonzini qstring = qobject_to_qstring(ret); 6887b7b7d18SPaolo Bonzini if (!qstring) { 6897b7b7d18SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "string"); 6907b7b7d18SPaolo Bonzini retval = NULL; 6917b7b7d18SPaolo Bonzini } else { 6927b7b7d18SPaolo Bonzini retval = g_strdup(qstring_get_str(qstring)); 6937b7b7d18SPaolo Bonzini } 6947b7b7d18SPaolo Bonzini 6957b7b7d18SPaolo Bonzini QDECREF(qstring); 6967b7b7d18SPaolo Bonzini return retval; 6977b7b7d18SPaolo Bonzini } 6987b7b7d18SPaolo Bonzini 6997b7b7d18SPaolo Bonzini void object_property_set_bool(Object *obj, bool value, 7007b7b7d18SPaolo Bonzini const char *name, Error **errp) 7017b7b7d18SPaolo Bonzini { 7027b7b7d18SPaolo Bonzini QBool *qbool = qbool_from_int(value); 7037b7b7d18SPaolo Bonzini object_property_set_qobject(obj, QOBJECT(qbool), name, errp); 7047b7b7d18SPaolo Bonzini 7057b7b7d18SPaolo Bonzini QDECREF(qbool); 7067b7b7d18SPaolo Bonzini } 7077b7b7d18SPaolo Bonzini 7087b7b7d18SPaolo Bonzini bool object_property_get_bool(Object *obj, const char *name, 7097b7b7d18SPaolo Bonzini Error **errp) 7107b7b7d18SPaolo Bonzini { 7117b7b7d18SPaolo Bonzini QObject *ret = object_property_get_qobject(obj, name, errp); 7127b7b7d18SPaolo Bonzini QBool *qbool; 7137b7b7d18SPaolo Bonzini bool retval; 7147b7b7d18SPaolo Bonzini 7157b7b7d18SPaolo Bonzini if (!ret) { 7167b7b7d18SPaolo Bonzini return false; 7177b7b7d18SPaolo Bonzini } 7187b7b7d18SPaolo Bonzini qbool = qobject_to_qbool(ret); 7197b7b7d18SPaolo Bonzini if (!qbool) { 7207b7b7d18SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean"); 7217b7b7d18SPaolo Bonzini retval = false; 7227b7b7d18SPaolo Bonzini } else { 7237b7b7d18SPaolo Bonzini retval = qbool_get_int(qbool); 7247b7b7d18SPaolo Bonzini } 7257b7b7d18SPaolo Bonzini 7267b7b7d18SPaolo Bonzini QDECREF(qbool); 7277b7b7d18SPaolo Bonzini return retval; 7287b7b7d18SPaolo Bonzini } 7297b7b7d18SPaolo Bonzini 7307b7b7d18SPaolo Bonzini void object_property_set_int(Object *obj, int64_t value, 7317b7b7d18SPaolo Bonzini const char *name, Error **errp) 7327b7b7d18SPaolo Bonzini { 7337b7b7d18SPaolo Bonzini QInt *qint = qint_from_int(value); 7347b7b7d18SPaolo Bonzini object_property_set_qobject(obj, QOBJECT(qint), name, errp); 7357b7b7d18SPaolo Bonzini 7367b7b7d18SPaolo Bonzini QDECREF(qint); 7377b7b7d18SPaolo Bonzini } 7387b7b7d18SPaolo Bonzini 7397b7b7d18SPaolo Bonzini int64_t object_property_get_int(Object *obj, const char *name, 7407b7b7d18SPaolo Bonzini Error **errp) 7417b7b7d18SPaolo Bonzini { 7427b7b7d18SPaolo Bonzini QObject *ret = object_property_get_qobject(obj, name, errp); 7437b7b7d18SPaolo Bonzini QInt *qint; 7447b7b7d18SPaolo Bonzini int64_t retval; 7457b7b7d18SPaolo Bonzini 7467b7b7d18SPaolo Bonzini if (!ret) { 7477b7b7d18SPaolo Bonzini return -1; 7487b7b7d18SPaolo Bonzini } 7497b7b7d18SPaolo Bonzini qint = qobject_to_qint(ret); 7507b7b7d18SPaolo Bonzini if (!qint) { 7517b7b7d18SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, "int"); 7527b7b7d18SPaolo Bonzini retval = -1; 7537b7b7d18SPaolo Bonzini } else { 7547b7b7d18SPaolo Bonzini retval = qint_get_int(qint); 7557b7b7d18SPaolo Bonzini } 7567b7b7d18SPaolo Bonzini 7577b7b7d18SPaolo Bonzini QDECREF(qint); 7587b7b7d18SPaolo Bonzini return retval; 7597b7b7d18SPaolo Bonzini } 7607b7b7d18SPaolo Bonzini 76157c9fafeSAnthony Liguori const char *object_property_get_type(Object *obj, const char *name, Error **errp) 76257c9fafeSAnthony Liguori { 76357c9fafeSAnthony Liguori ObjectProperty *prop = object_property_find(obj, name); 76457c9fafeSAnthony Liguori 76557c9fafeSAnthony Liguori if (prop == NULL) { 76657c9fafeSAnthony Liguori error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name); 76757c9fafeSAnthony Liguori return NULL; 76857c9fafeSAnthony Liguori } 76957c9fafeSAnthony Liguori 77057c9fafeSAnthony Liguori return prop->type; 77157c9fafeSAnthony Liguori } 77257c9fafeSAnthony Liguori 77357c9fafeSAnthony Liguori Object *object_get_root(void) 77457c9fafeSAnthony Liguori { 7758b45d447SAnthony Liguori static Object *root; 77657c9fafeSAnthony Liguori 7778b45d447SAnthony Liguori if (!root) { 7788b45d447SAnthony Liguori root = object_new("container"); 77957c9fafeSAnthony Liguori } 78057c9fafeSAnthony Liguori 7818b45d447SAnthony Liguori return root; 78257c9fafeSAnthony Liguori } 78357c9fafeSAnthony Liguori 78457c9fafeSAnthony Liguori static void object_get_child_property(Object *obj, Visitor *v, void *opaque, 78557c9fafeSAnthony Liguori const char *name, Error **errp) 78657c9fafeSAnthony Liguori { 78757c9fafeSAnthony Liguori Object *child = opaque; 78857c9fafeSAnthony Liguori gchar *path; 78957c9fafeSAnthony Liguori 79057c9fafeSAnthony Liguori path = object_get_canonical_path(child); 79157c9fafeSAnthony Liguori visit_type_str(v, &path, name, errp); 79257c9fafeSAnthony Liguori g_free(path); 79357c9fafeSAnthony Liguori } 79457c9fafeSAnthony Liguori 795db85b575SAnthony Liguori static void object_finalize_child_property(Object *obj, const char *name, 796db85b575SAnthony Liguori void *opaque) 797db85b575SAnthony Liguori { 798db85b575SAnthony Liguori Object *child = opaque; 799db85b575SAnthony Liguori 800db85b575SAnthony Liguori object_unref(child); 801db85b575SAnthony Liguori } 802db85b575SAnthony Liguori 80357c9fafeSAnthony Liguori void object_property_add_child(Object *obj, const char *name, 80457c9fafeSAnthony Liguori Object *child, Error **errp) 80557c9fafeSAnthony Liguori { 80657c9fafeSAnthony Liguori gchar *type; 80757c9fafeSAnthony Liguori 80857c9fafeSAnthony Liguori type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child))); 80957c9fafeSAnthony Liguori 81057c9fafeSAnthony Liguori object_property_add(obj, name, type, object_get_child_property, 811db85b575SAnthony Liguori NULL, object_finalize_child_property, child, errp); 81257c9fafeSAnthony Liguori 81357c9fafeSAnthony Liguori object_ref(child); 81457c9fafeSAnthony Liguori g_assert(child->parent == NULL); 81557c9fafeSAnthony Liguori child->parent = obj; 81657c9fafeSAnthony Liguori 81757c9fafeSAnthony Liguori g_free(type); 81857c9fafeSAnthony Liguori } 81957c9fafeSAnthony Liguori 82057c9fafeSAnthony Liguori static void object_get_link_property(Object *obj, Visitor *v, void *opaque, 82157c9fafeSAnthony Liguori const char *name, Error **errp) 82257c9fafeSAnthony Liguori { 82357c9fafeSAnthony Liguori Object **child = opaque; 82457c9fafeSAnthony Liguori gchar *path; 82557c9fafeSAnthony Liguori 82657c9fafeSAnthony Liguori if (*child) { 82757c9fafeSAnthony Liguori path = object_get_canonical_path(*child); 82857c9fafeSAnthony Liguori visit_type_str(v, &path, name, errp); 82957c9fafeSAnthony Liguori g_free(path); 83057c9fafeSAnthony Liguori } else { 83157c9fafeSAnthony Liguori path = (gchar *)""; 83257c9fafeSAnthony Liguori visit_type_str(v, &path, name, errp); 83357c9fafeSAnthony Liguori } 83457c9fafeSAnthony Liguori } 83557c9fafeSAnthony Liguori 83657c9fafeSAnthony Liguori static void object_set_link_property(Object *obj, Visitor *v, void *opaque, 83757c9fafeSAnthony Liguori const char *name, Error **errp) 83857c9fafeSAnthony Liguori { 83957c9fafeSAnthony Liguori Object **child = opaque; 84057c9fafeSAnthony Liguori bool ambiguous = false; 84157c9fafeSAnthony Liguori const char *type; 84257c9fafeSAnthony Liguori char *path; 84357c9fafeSAnthony Liguori 84457c9fafeSAnthony Liguori type = object_property_get_type(obj, name, NULL); 84557c9fafeSAnthony Liguori 84657c9fafeSAnthony Liguori visit_type_str(v, &path, name, errp); 84757c9fafeSAnthony Liguori 84857c9fafeSAnthony Liguori if (*child) { 84957c9fafeSAnthony Liguori object_unref(*child); 85057c9fafeSAnthony Liguori } 85157c9fafeSAnthony Liguori 85257c9fafeSAnthony Liguori if (strcmp(path, "") != 0) { 85357c9fafeSAnthony Liguori Object *target; 85457c9fafeSAnthony Liguori 85557c9fafeSAnthony Liguori target = object_resolve_path(path, &ambiguous); 85657c9fafeSAnthony Liguori if (target) { 857*8f770d39SPaolo Bonzini /* Go from link<FOO> to FOO. */ 858*8f770d39SPaolo Bonzini gchar *target_type = g_strndup(&type[5], strlen(type) - 6); 859fe40e627SAnthony Liguori if (object_dynamic_cast(target, target_type)) { 86057c9fafeSAnthony Liguori object_ref(target); 861fe40e627SAnthony Liguori *child = target; 86257c9fafeSAnthony Liguori } else { 86357c9fafeSAnthony Liguori error_set(errp, QERR_INVALID_PARAMETER_TYPE, name, type); 86457c9fafeSAnthony Liguori } 86557c9fafeSAnthony Liguori 86657c9fafeSAnthony Liguori g_free(target_type); 86757c9fafeSAnthony Liguori } else { 86857c9fafeSAnthony Liguori error_set(errp, QERR_DEVICE_NOT_FOUND, path); 86957c9fafeSAnthony Liguori } 87057c9fafeSAnthony Liguori } else { 87157c9fafeSAnthony Liguori *child = NULL; 87257c9fafeSAnthony Liguori } 87357c9fafeSAnthony Liguori 87457c9fafeSAnthony Liguori g_free(path); 87557c9fafeSAnthony Liguori } 87657c9fafeSAnthony Liguori 87757c9fafeSAnthony Liguori void object_property_add_link(Object *obj, const char *name, 87857c9fafeSAnthony Liguori const char *type, Object **child, 87957c9fafeSAnthony Liguori Error **errp) 88057c9fafeSAnthony Liguori { 88157c9fafeSAnthony Liguori gchar *full_type; 88257c9fafeSAnthony Liguori 88357c9fafeSAnthony Liguori full_type = g_strdup_printf("link<%s>", type); 88457c9fafeSAnthony Liguori 88557c9fafeSAnthony Liguori object_property_add(obj, name, full_type, 88657c9fafeSAnthony Liguori object_get_link_property, 88757c9fafeSAnthony Liguori object_set_link_property, 88857c9fafeSAnthony Liguori NULL, child, errp); 88957c9fafeSAnthony Liguori 89057c9fafeSAnthony Liguori g_free(full_type); 89157c9fafeSAnthony Liguori } 89257c9fafeSAnthony Liguori 89357c9fafeSAnthony Liguori gchar *object_get_canonical_path(Object *obj) 89457c9fafeSAnthony Liguori { 89557c9fafeSAnthony Liguori Object *root = object_get_root(); 89657c9fafeSAnthony Liguori char *newpath = NULL, *path = NULL; 89757c9fafeSAnthony Liguori 89857c9fafeSAnthony Liguori while (obj != root) { 89957c9fafeSAnthony Liguori ObjectProperty *prop = NULL; 90057c9fafeSAnthony Liguori 90157c9fafeSAnthony Liguori g_assert(obj->parent != NULL); 90257c9fafeSAnthony Liguori 90357c9fafeSAnthony Liguori QTAILQ_FOREACH(prop, &obj->parent->properties, node) { 90457c9fafeSAnthony Liguori if (!strstart(prop->type, "child<", NULL)) { 90557c9fafeSAnthony Liguori continue; 90657c9fafeSAnthony Liguori } 90757c9fafeSAnthony Liguori 90857c9fafeSAnthony Liguori if (prop->opaque == obj) { 90957c9fafeSAnthony Liguori if (path) { 91057c9fafeSAnthony Liguori newpath = g_strdup_printf("%s/%s", prop->name, path); 91157c9fafeSAnthony Liguori g_free(path); 91257c9fafeSAnthony Liguori path = newpath; 91357c9fafeSAnthony Liguori } else { 91457c9fafeSAnthony Liguori path = g_strdup(prop->name); 91557c9fafeSAnthony Liguori } 91657c9fafeSAnthony Liguori break; 91757c9fafeSAnthony Liguori } 91857c9fafeSAnthony Liguori } 91957c9fafeSAnthony Liguori 92057c9fafeSAnthony Liguori g_assert(prop != NULL); 92157c9fafeSAnthony Liguori 92257c9fafeSAnthony Liguori obj = obj->parent; 92357c9fafeSAnthony Liguori } 92457c9fafeSAnthony Liguori 92557c9fafeSAnthony Liguori newpath = g_strdup_printf("/%s", path); 92657c9fafeSAnthony Liguori g_free(path); 92757c9fafeSAnthony Liguori 92857c9fafeSAnthony Liguori return newpath; 92957c9fafeSAnthony Liguori } 93057c9fafeSAnthony Liguori 93157c9fafeSAnthony Liguori static Object *object_resolve_abs_path(Object *parent, 93257c9fafeSAnthony Liguori gchar **parts, 93357c9fafeSAnthony Liguori int index) 93457c9fafeSAnthony Liguori { 93557c9fafeSAnthony Liguori ObjectProperty *prop; 93657c9fafeSAnthony Liguori Object *child; 93757c9fafeSAnthony Liguori 93857c9fafeSAnthony Liguori if (parts[index] == NULL) { 93957c9fafeSAnthony Liguori return parent; 94057c9fafeSAnthony Liguori } 94157c9fafeSAnthony Liguori 94257c9fafeSAnthony Liguori if (strcmp(parts[index], "") == 0) { 94357c9fafeSAnthony Liguori return object_resolve_abs_path(parent, parts, index + 1); 94457c9fafeSAnthony Liguori } 94557c9fafeSAnthony Liguori 94657c9fafeSAnthony Liguori prop = object_property_find(parent, parts[index]); 94757c9fafeSAnthony Liguori if (prop == NULL) { 94857c9fafeSAnthony Liguori return NULL; 94957c9fafeSAnthony Liguori } 95057c9fafeSAnthony Liguori 95157c9fafeSAnthony Liguori child = NULL; 95257c9fafeSAnthony Liguori if (strstart(prop->type, "link<", NULL)) { 95357c9fafeSAnthony Liguori Object **pchild = prop->opaque; 95457c9fafeSAnthony Liguori if (*pchild) { 95557c9fafeSAnthony Liguori child = *pchild; 95657c9fafeSAnthony Liguori } 95757c9fafeSAnthony Liguori } else if (strstart(prop->type, "child<", NULL)) { 95857c9fafeSAnthony Liguori child = prop->opaque; 95957c9fafeSAnthony Liguori } 96057c9fafeSAnthony Liguori 96157c9fafeSAnthony Liguori if (!child) { 96257c9fafeSAnthony Liguori return NULL; 96357c9fafeSAnthony Liguori } 96457c9fafeSAnthony Liguori 96557c9fafeSAnthony Liguori return object_resolve_abs_path(child, parts, index + 1); 96657c9fafeSAnthony Liguori } 96757c9fafeSAnthony Liguori 96857c9fafeSAnthony Liguori static Object *object_resolve_partial_path(Object *parent, 96957c9fafeSAnthony Liguori gchar **parts, 97057c9fafeSAnthony Liguori bool *ambiguous) 97157c9fafeSAnthony Liguori { 97257c9fafeSAnthony Liguori Object *obj; 97357c9fafeSAnthony Liguori ObjectProperty *prop; 97457c9fafeSAnthony Liguori 97557c9fafeSAnthony Liguori obj = object_resolve_abs_path(parent, parts, 0); 97657c9fafeSAnthony Liguori 97757c9fafeSAnthony Liguori QTAILQ_FOREACH(prop, &parent->properties, node) { 97857c9fafeSAnthony Liguori Object *found; 97957c9fafeSAnthony Liguori 98057c9fafeSAnthony Liguori if (!strstart(prop->type, "child<", NULL)) { 98157c9fafeSAnthony Liguori continue; 98257c9fafeSAnthony Liguori } 98357c9fafeSAnthony Liguori 98457c9fafeSAnthony Liguori found = object_resolve_partial_path(prop->opaque, parts, ambiguous); 98557c9fafeSAnthony Liguori if (found) { 98657c9fafeSAnthony Liguori if (obj) { 98757c9fafeSAnthony Liguori if (ambiguous) { 98857c9fafeSAnthony Liguori *ambiguous = true; 98957c9fafeSAnthony Liguori } 99057c9fafeSAnthony Liguori return NULL; 99157c9fafeSAnthony Liguori } 99257c9fafeSAnthony Liguori obj = found; 99357c9fafeSAnthony Liguori } 99457c9fafeSAnthony Liguori 99557c9fafeSAnthony Liguori if (ambiguous && *ambiguous) { 99657c9fafeSAnthony Liguori return NULL; 99757c9fafeSAnthony Liguori } 99857c9fafeSAnthony Liguori } 99957c9fafeSAnthony Liguori 100057c9fafeSAnthony Liguori return obj; 100157c9fafeSAnthony Liguori } 100257c9fafeSAnthony Liguori 100357c9fafeSAnthony Liguori Object *object_resolve_path(const char *path, bool *ambiguous) 100457c9fafeSAnthony Liguori { 100557c9fafeSAnthony Liguori bool partial_path = true; 100657c9fafeSAnthony Liguori Object *obj; 100757c9fafeSAnthony Liguori gchar **parts; 100857c9fafeSAnthony Liguori 100957c9fafeSAnthony Liguori parts = g_strsplit(path, "/", 0); 101057c9fafeSAnthony Liguori if (parts == NULL || parts[0] == NULL) { 101157c9fafeSAnthony Liguori g_strfreev(parts); 101257c9fafeSAnthony Liguori return object_get_root(); 101357c9fafeSAnthony Liguori } 101457c9fafeSAnthony Liguori 101557c9fafeSAnthony Liguori if (strcmp(parts[0], "") == 0) { 101657c9fafeSAnthony Liguori partial_path = false; 101757c9fafeSAnthony Liguori } 101857c9fafeSAnthony Liguori 101957c9fafeSAnthony Liguori if (partial_path) { 102057c9fafeSAnthony Liguori if (ambiguous) { 102157c9fafeSAnthony Liguori *ambiguous = false; 102257c9fafeSAnthony Liguori } 102357c9fafeSAnthony Liguori obj = object_resolve_partial_path(object_get_root(), parts, ambiguous); 102457c9fafeSAnthony Liguori } else { 102557c9fafeSAnthony Liguori obj = object_resolve_abs_path(object_get_root(), parts, 1); 102657c9fafeSAnthony Liguori } 102757c9fafeSAnthony Liguori 102857c9fafeSAnthony Liguori g_strfreev(parts); 102957c9fafeSAnthony Liguori 103057c9fafeSAnthony Liguori return obj; 103157c9fafeSAnthony Liguori } 103257c9fafeSAnthony Liguori 103357c9fafeSAnthony Liguori typedef struct StringProperty 103457c9fafeSAnthony Liguori { 103557c9fafeSAnthony Liguori char *(*get)(Object *, Error **); 103657c9fafeSAnthony Liguori void (*set)(Object *, const char *, Error **); 103757c9fafeSAnthony Liguori } StringProperty; 103857c9fafeSAnthony Liguori 10397b7b7d18SPaolo Bonzini static void property_get_str(Object *obj, Visitor *v, void *opaque, 104057c9fafeSAnthony Liguori const char *name, Error **errp) 104157c9fafeSAnthony Liguori { 104257c9fafeSAnthony Liguori StringProperty *prop = opaque; 104357c9fafeSAnthony Liguori char *value; 104457c9fafeSAnthony Liguori 104557c9fafeSAnthony Liguori value = prop->get(obj, errp); 104657c9fafeSAnthony Liguori if (value) { 104757c9fafeSAnthony Liguori visit_type_str(v, &value, name, errp); 104857c9fafeSAnthony Liguori g_free(value); 104957c9fafeSAnthony Liguori } 105057c9fafeSAnthony Liguori } 105157c9fafeSAnthony Liguori 10527b7b7d18SPaolo Bonzini static void property_set_str(Object *obj, Visitor *v, void *opaque, 105357c9fafeSAnthony Liguori const char *name, Error **errp) 105457c9fafeSAnthony Liguori { 105557c9fafeSAnthony Liguori StringProperty *prop = opaque; 105657c9fafeSAnthony Liguori char *value; 105757c9fafeSAnthony Liguori Error *local_err = NULL; 105857c9fafeSAnthony Liguori 105957c9fafeSAnthony Liguori visit_type_str(v, &value, name, &local_err); 106057c9fafeSAnthony Liguori if (local_err) { 106157c9fafeSAnthony Liguori error_propagate(errp, local_err); 106257c9fafeSAnthony Liguori return; 106357c9fafeSAnthony Liguori } 106457c9fafeSAnthony Liguori 106557c9fafeSAnthony Liguori prop->set(obj, value, errp); 106657c9fafeSAnthony Liguori g_free(value); 106757c9fafeSAnthony Liguori } 106857c9fafeSAnthony Liguori 10697b7b7d18SPaolo Bonzini static void property_release_str(Object *obj, const char *name, 107057c9fafeSAnthony Liguori void *opaque) 107157c9fafeSAnthony Liguori { 107257c9fafeSAnthony Liguori StringProperty *prop = opaque; 107357c9fafeSAnthony Liguori g_free(prop); 107457c9fafeSAnthony Liguori } 107557c9fafeSAnthony Liguori 107657c9fafeSAnthony Liguori void object_property_add_str(Object *obj, const char *name, 107757c9fafeSAnthony Liguori char *(*get)(Object *, Error **), 107857c9fafeSAnthony Liguori void (*set)(Object *, const char *, Error **), 107957c9fafeSAnthony Liguori Error **errp) 108057c9fafeSAnthony Liguori { 108157c9fafeSAnthony Liguori StringProperty *prop = g_malloc0(sizeof(*prop)); 108257c9fafeSAnthony Liguori 108357c9fafeSAnthony Liguori prop->get = get; 108457c9fafeSAnthony Liguori prop->set = set; 108557c9fafeSAnthony Liguori 108657c9fafeSAnthony Liguori object_property_add(obj, name, "string", 10877b7b7d18SPaolo Bonzini get ? property_get_str : NULL, 10887b7b7d18SPaolo Bonzini set ? property_set_str : NULL, 10897b7b7d18SPaolo Bonzini property_release_str, 109057c9fafeSAnthony Liguori prop, errp); 109157c9fafeSAnthony Liguori } 1092