1 /* 2 * QEMU Object Model 3 * 4 * Copyright IBM, Corp. 2011 5 * 6 * Authors: 7 * Anthony Liguori <aliguori@us.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "hw/qdev-core.h" 15 #include "qapi/error.h" 16 #include "qom/object.h" 17 #include "qom/object_interfaces.h" 18 #include "qemu/cutils.h" 19 #include "qapi/visitor.h" 20 #include "qapi/string-input-visitor.h" 21 #include "qapi/string-output-visitor.h" 22 #include "qapi/qobject-input-visitor.h" 23 #include "qapi/qapi-builtin-visit.h" 24 #include "qapi/qmp/qerror.h" 25 #include "qapi/qmp/qjson.h" 26 #include "trace.h" 27 28 /* TODO: replace QObject with a simpler visitor to avoid a dependency 29 * of the QOM core on QObject? */ 30 #include "qom/qom-qobject.h" 31 #include "qapi/qmp/qbool.h" 32 #include "qapi/qmp/qnum.h" 33 #include "qapi/qmp/qstring.h" 34 #include "qemu/error-report.h" 35 36 #define MAX_INTERFACES 32 37 38 typedef struct InterfaceImpl InterfaceImpl; 39 typedef struct TypeImpl TypeImpl; 40 41 struct InterfaceImpl 42 { 43 const char *typename; 44 }; 45 46 struct TypeImpl 47 { 48 const char *name; 49 50 size_t class_size; 51 52 size_t instance_size; 53 54 void (*class_init)(ObjectClass *klass, void *data); 55 void (*class_base_init)(ObjectClass *klass, void *data); 56 57 void *class_data; 58 59 void (*instance_init)(Object *obj); 60 void (*instance_post_init)(Object *obj); 61 void (*instance_finalize)(Object *obj); 62 63 bool abstract; 64 65 const char *parent; 66 TypeImpl *parent_type; 67 68 ObjectClass *class; 69 70 int num_interfaces; 71 InterfaceImpl interfaces[MAX_INTERFACES]; 72 }; 73 74 static Type type_interface; 75 76 static GHashTable *type_table_get(void) 77 { 78 static GHashTable *type_table; 79 80 if (type_table == NULL) { 81 type_table = g_hash_table_new(g_str_hash, g_str_equal); 82 } 83 84 return type_table; 85 } 86 87 static bool enumerating_types; 88 89 static void type_table_add(TypeImpl *ti) 90 { 91 assert(!enumerating_types); 92 g_hash_table_insert(type_table_get(), (void *)ti->name, ti); 93 } 94 95 static TypeImpl *type_table_lookup(const char *name) 96 { 97 return g_hash_table_lookup(type_table_get(), name); 98 } 99 100 static TypeImpl *type_new(const TypeInfo *info) 101 { 102 TypeImpl *ti = g_malloc0(sizeof(*ti)); 103 int i; 104 105 g_assert(info->name != NULL); 106 107 if (type_table_lookup(info->name) != NULL) { 108 fprintf(stderr, "Registering `%s' which already exists\n", info->name); 109 abort(); 110 } 111 112 ti->name = g_strdup(info->name); 113 ti->parent = g_strdup(info->parent); 114 115 ti->class_size = info->class_size; 116 ti->instance_size = info->instance_size; 117 118 ti->class_init = info->class_init; 119 ti->class_base_init = info->class_base_init; 120 ti->class_data = info->class_data; 121 122 ti->instance_init = info->instance_init; 123 ti->instance_post_init = info->instance_post_init; 124 ti->instance_finalize = info->instance_finalize; 125 126 ti->abstract = info->abstract; 127 128 for (i = 0; info->interfaces && info->interfaces[i].type; i++) { 129 ti->interfaces[i].typename = g_strdup(info->interfaces[i].type); 130 } 131 ti->num_interfaces = i; 132 133 return ti; 134 } 135 136 static TypeImpl *type_register_internal(const TypeInfo *info) 137 { 138 TypeImpl *ti; 139 ti = type_new(info); 140 141 type_table_add(ti); 142 return ti; 143 } 144 145 TypeImpl *type_register(const TypeInfo *info) 146 { 147 assert(info->parent); 148 return type_register_internal(info); 149 } 150 151 TypeImpl *type_register_static(const TypeInfo *info) 152 { 153 return type_register(info); 154 } 155 156 void type_register_static_array(const TypeInfo *infos, int nr_infos) 157 { 158 int i; 159 160 for (i = 0; i < nr_infos; i++) { 161 type_register_static(&infos[i]); 162 } 163 } 164 165 static TypeImpl *type_get_by_name(const char *name) 166 { 167 if (name == NULL) { 168 return NULL; 169 } 170 171 return type_table_lookup(name); 172 } 173 174 static TypeImpl *type_get_parent(TypeImpl *type) 175 { 176 if (!type->parent_type && type->parent) { 177 type->parent_type = type_get_by_name(type->parent); 178 if (!type->parent_type) { 179 fprintf(stderr, "Type '%s' is missing its parent '%s'\n", 180 type->name, type->parent); 181 abort(); 182 } 183 } 184 185 return type->parent_type; 186 } 187 188 static bool type_has_parent(TypeImpl *type) 189 { 190 return (type->parent != NULL); 191 } 192 193 static size_t type_class_get_size(TypeImpl *ti) 194 { 195 if (ti->class_size) { 196 return ti->class_size; 197 } 198 199 if (type_has_parent(ti)) { 200 return type_class_get_size(type_get_parent(ti)); 201 } 202 203 return sizeof(ObjectClass); 204 } 205 206 static size_t type_object_get_size(TypeImpl *ti) 207 { 208 if (ti->instance_size) { 209 return ti->instance_size; 210 } 211 212 if (type_has_parent(ti)) { 213 return type_object_get_size(type_get_parent(ti)); 214 } 215 216 return 0; 217 } 218 219 size_t object_type_get_instance_size(const char *typename) 220 { 221 TypeImpl *type = type_get_by_name(typename); 222 223 g_assert(type != NULL); 224 return type_object_get_size(type); 225 } 226 227 static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type) 228 { 229 assert(target_type); 230 231 /* Check if target_type is a direct ancestor of type */ 232 while (type) { 233 if (type == target_type) { 234 return true; 235 } 236 237 type = type_get_parent(type); 238 } 239 240 return false; 241 } 242 243 static void type_initialize(TypeImpl *ti); 244 245 static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type, 246 TypeImpl *parent_type) 247 { 248 InterfaceClass *new_iface; 249 TypeInfo info = { }; 250 TypeImpl *iface_impl; 251 252 info.parent = parent_type->name; 253 info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name); 254 info.abstract = true; 255 256 iface_impl = type_new(&info); 257 iface_impl->parent_type = parent_type; 258 type_initialize(iface_impl); 259 g_free((char *)info.name); 260 261 new_iface = (InterfaceClass *)iface_impl->class; 262 new_iface->concrete_class = ti->class; 263 new_iface->interface_type = interface_type; 264 265 ti->class->interfaces = g_slist_append(ti->class->interfaces, 266 iface_impl->class); 267 } 268 269 static void object_property_free(gpointer data) 270 { 271 ObjectProperty *prop = data; 272 273 if (prop->defval) { 274 qobject_unref(prop->defval); 275 prop->defval = NULL; 276 } 277 g_free(prop->name); 278 g_free(prop->type); 279 g_free(prop->description); 280 g_free(prop); 281 } 282 283 static void type_initialize(TypeImpl *ti) 284 { 285 TypeImpl *parent; 286 287 if (ti->class) { 288 return; 289 } 290 291 ti->class_size = type_class_get_size(ti); 292 ti->instance_size = type_object_get_size(ti); 293 /* Any type with zero instance_size is implicitly abstract. 294 * This means interface types are all abstract. 295 */ 296 if (ti->instance_size == 0) { 297 ti->abstract = true; 298 } 299 if (type_is_ancestor(ti, type_interface)) { 300 assert(ti->instance_size == 0); 301 assert(ti->abstract); 302 assert(!ti->instance_init); 303 assert(!ti->instance_post_init); 304 assert(!ti->instance_finalize); 305 assert(!ti->num_interfaces); 306 } 307 ti->class = g_malloc0(ti->class_size); 308 309 parent = type_get_parent(ti); 310 if (parent) { 311 type_initialize(parent); 312 GSList *e; 313 int i; 314 315 g_assert(parent->class_size <= ti->class_size); 316 g_assert(parent->instance_size <= ti->instance_size); 317 memcpy(ti->class, parent->class, parent->class_size); 318 ti->class->interfaces = NULL; 319 ti->class->properties = g_hash_table_new_full( 320 g_str_hash, g_str_equal, NULL, object_property_free); 321 322 for (e = parent->class->interfaces; e; e = e->next) { 323 InterfaceClass *iface = e->data; 324 ObjectClass *klass = OBJECT_CLASS(iface); 325 326 type_initialize_interface(ti, iface->interface_type, klass->type); 327 } 328 329 for (i = 0; i < ti->num_interfaces; i++) { 330 TypeImpl *t = type_get_by_name(ti->interfaces[i].typename); 331 if (!t) { 332 error_report("missing interface '%s' for object '%s'", 333 ti->interfaces[i].typename, parent->name); 334 abort(); 335 } 336 for (e = ti->class->interfaces; e; e = e->next) { 337 TypeImpl *target_type = OBJECT_CLASS(e->data)->type; 338 339 if (type_is_ancestor(target_type, t)) { 340 break; 341 } 342 } 343 344 if (e) { 345 continue; 346 } 347 348 type_initialize_interface(ti, t, t); 349 } 350 } else { 351 ti->class->properties = g_hash_table_new_full( 352 g_str_hash, g_str_equal, NULL, object_property_free); 353 } 354 355 ti->class->type = ti; 356 357 while (parent) { 358 if (parent->class_base_init) { 359 parent->class_base_init(ti->class, ti->class_data); 360 } 361 parent = type_get_parent(parent); 362 } 363 364 if (ti->class_init) { 365 ti->class_init(ti->class, ti->class_data); 366 } 367 } 368 369 static void object_init_with_type(Object *obj, TypeImpl *ti) 370 { 371 if (type_has_parent(ti)) { 372 object_init_with_type(obj, type_get_parent(ti)); 373 } 374 375 if (ti->instance_init) { 376 ti->instance_init(obj); 377 } 378 } 379 380 static void object_post_init_with_type(Object *obj, TypeImpl *ti) 381 { 382 if (ti->instance_post_init) { 383 ti->instance_post_init(obj); 384 } 385 386 if (type_has_parent(ti)) { 387 object_post_init_with_type(obj, type_get_parent(ti)); 388 } 389 } 390 391 void object_apply_global_props(Object *obj, const GPtrArray *props, Error **errp) 392 { 393 int i; 394 395 if (!props) { 396 return; 397 } 398 399 for (i = 0; i < props->len; i++) { 400 GlobalProperty *p = g_ptr_array_index(props, i); 401 Error *err = NULL; 402 403 if (object_dynamic_cast(obj, p->driver) == NULL) { 404 continue; 405 } 406 if (p->optional && !object_property_find(obj, p->property, NULL)) { 407 continue; 408 } 409 p->used = true; 410 object_property_parse(obj, p->value, p->property, &err); 411 if (err != NULL) { 412 error_prepend(&err, "can't apply global %s.%s=%s: ", 413 p->driver, p->property, p->value); 414 /* 415 * If errp != NULL, propagate error and return. 416 * If errp == NULL, report a warning, but keep going 417 * with the remaining globals. 418 */ 419 if (errp) { 420 error_propagate(errp, err); 421 return; 422 } else { 423 warn_report_err(err); 424 } 425 } 426 } 427 } 428 429 /* 430 * Global property defaults 431 * Slot 0: accelerator's global property defaults 432 * Slot 1: machine's global property defaults 433 * Slot 2: global properties from legacy command line option 434 * Each is a GPtrArray of of GlobalProperty. 435 * Applied in order, later entries override earlier ones. 436 */ 437 static GPtrArray *object_compat_props[3]; 438 439 /* 440 * Retrieve @GPtrArray for global property defined with options 441 * other than "-global". These are generally used for syntactic 442 * sugar and legacy command line options. 443 */ 444 void object_register_sugar_prop(const char *driver, const char *prop, const char *value) 445 { 446 GlobalProperty *g; 447 if (!object_compat_props[2]) { 448 object_compat_props[2] = g_ptr_array_new(); 449 } 450 g = g_new0(GlobalProperty, 1); 451 g->driver = g_strdup(driver); 452 g->property = g_strdup(prop); 453 g->value = g_strdup(value); 454 g_ptr_array_add(object_compat_props[2], g); 455 } 456 457 /* 458 * Set machine's global property defaults to @compat_props. 459 * May be called at most once. 460 */ 461 void object_set_machine_compat_props(GPtrArray *compat_props) 462 { 463 assert(!object_compat_props[1]); 464 object_compat_props[1] = compat_props; 465 } 466 467 /* 468 * Set accelerator's global property defaults to @compat_props. 469 * May be called at most once. 470 */ 471 void object_set_accelerator_compat_props(GPtrArray *compat_props) 472 { 473 assert(!object_compat_props[0]); 474 object_compat_props[0] = compat_props; 475 } 476 477 void object_apply_compat_props(Object *obj) 478 { 479 int i; 480 481 for (i = 0; i < ARRAY_SIZE(object_compat_props); i++) { 482 object_apply_global_props(obj, object_compat_props[i], 483 i == 2 ? &error_fatal : &error_abort); 484 } 485 } 486 487 static void object_class_property_init_all(Object *obj) 488 { 489 ObjectPropertyIterator iter; 490 ObjectProperty *prop; 491 492 object_class_property_iter_init(&iter, object_get_class(obj)); 493 while ((prop = object_property_iter_next(&iter))) { 494 if (prop->init) { 495 prop->init(obj, prop); 496 } 497 } 498 } 499 500 static void object_initialize_with_type(void *data, size_t size, TypeImpl *type) 501 { 502 Object *obj = data; 503 504 type_initialize(type); 505 506 g_assert(type->instance_size >= sizeof(Object)); 507 g_assert(type->abstract == false); 508 g_assert(size >= type->instance_size); 509 510 memset(obj, 0, type->instance_size); 511 obj->class = type->class; 512 object_ref(obj); 513 object_class_property_init_all(obj); 514 obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal, 515 NULL, object_property_free); 516 object_init_with_type(obj, type); 517 object_post_init_with_type(obj, type); 518 } 519 520 void object_initialize(void *data, size_t size, const char *typename) 521 { 522 TypeImpl *type = type_get_by_name(typename); 523 524 if (!type) { 525 error_report("missing object type '%s'", typename); 526 abort(); 527 } 528 529 object_initialize_with_type(data, size, type); 530 } 531 532 void object_initialize_child(Object *parentobj, const char *propname, 533 void *childobj, size_t size, const char *type, 534 Error **errp, ...) 535 { 536 va_list vargs; 537 538 va_start(vargs, errp); 539 object_initialize_childv(parentobj, propname, childobj, size, type, errp, 540 vargs); 541 va_end(vargs); 542 } 543 544 void object_initialize_childv(Object *parentobj, const char *propname, 545 void *childobj, size_t size, const char *type, 546 Error **errp, va_list vargs) 547 { 548 Error *local_err = NULL; 549 Object *obj; 550 UserCreatable *uc; 551 552 object_initialize(childobj, size, type); 553 obj = OBJECT(childobj); 554 555 object_set_propv(obj, &local_err, vargs); 556 if (local_err) { 557 goto out; 558 } 559 560 object_property_add_child(parentobj, propname, obj); 561 562 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); 563 if (uc) { 564 user_creatable_complete(uc, &local_err); 565 if (local_err) { 566 object_unparent(obj); 567 goto out; 568 } 569 } 570 571 out: 572 /* 573 * We want @obj's reference to be 1 on success, 0 on failure. 574 * On success, it's 2: one taken by object_initialize(), and one 575 * by object_property_add_child(). 576 * On failure in object_initialize() or earlier, it's 1. 577 * On failure afterwards, it's also 1: object_unparent() releases 578 * the reference taken by object_property_add_child(). 579 */ 580 object_unref(obj); 581 582 error_propagate(errp, local_err); 583 } 584 585 static inline bool object_property_is_child(ObjectProperty *prop) 586 { 587 return strstart(prop->type, "child<", NULL); 588 } 589 590 static void object_property_del_all(Object *obj) 591 { 592 g_autoptr(GHashTable) done = g_hash_table_new(NULL, NULL); 593 ObjectProperty *prop; 594 ObjectPropertyIterator iter; 595 bool released; 596 597 do { 598 released = false; 599 object_property_iter_init(&iter, obj); 600 while ((prop = object_property_iter_next(&iter)) != NULL) { 601 if (g_hash_table_add(done, prop)) { 602 if (prop->release) { 603 prop->release(obj, prop->name, prop->opaque); 604 released = true; 605 break; 606 } 607 } 608 } 609 } while (released); 610 611 g_hash_table_unref(obj->properties); 612 } 613 614 static void object_property_del_child(Object *obj, Object *child) 615 { 616 ObjectProperty *prop; 617 GHashTableIter iter; 618 gpointer key, value; 619 620 g_hash_table_iter_init(&iter, obj->properties); 621 while (g_hash_table_iter_next(&iter, &key, &value)) { 622 prop = value; 623 if (object_property_is_child(prop) && prop->opaque == child) { 624 if (prop->release) { 625 prop->release(obj, prop->name, prop->opaque); 626 prop->release = NULL; 627 } 628 break; 629 } 630 } 631 g_hash_table_iter_init(&iter, obj->properties); 632 while (g_hash_table_iter_next(&iter, &key, &value)) { 633 prop = value; 634 if (object_property_is_child(prop) && prop->opaque == child) { 635 g_hash_table_iter_remove(&iter); 636 break; 637 } 638 } 639 } 640 641 void object_unparent(Object *obj) 642 { 643 if (obj->parent) { 644 object_property_del_child(obj->parent, obj); 645 } 646 } 647 648 static void object_deinit(Object *obj, TypeImpl *type) 649 { 650 if (type->instance_finalize) { 651 type->instance_finalize(obj); 652 } 653 654 if (type_has_parent(type)) { 655 object_deinit(obj, type_get_parent(type)); 656 } 657 } 658 659 static void object_finalize(void *data) 660 { 661 Object *obj = data; 662 TypeImpl *ti = obj->class->type; 663 664 object_property_del_all(obj); 665 object_deinit(obj, ti); 666 667 g_assert(obj->ref == 0); 668 if (obj->free) { 669 obj->free(obj); 670 } 671 } 672 673 static Object *object_new_with_type(Type type) 674 { 675 Object *obj; 676 677 g_assert(type != NULL); 678 type_initialize(type); 679 680 obj = g_malloc(type->instance_size); 681 object_initialize_with_type(obj, type->instance_size, type); 682 obj->free = g_free; 683 684 return obj; 685 } 686 687 Object *object_new_with_class(ObjectClass *klass) 688 { 689 return object_new_with_type(klass->type); 690 } 691 692 Object *object_new(const char *typename) 693 { 694 TypeImpl *ti = type_get_by_name(typename); 695 696 return object_new_with_type(ti); 697 } 698 699 700 Object *object_new_with_props(const char *typename, 701 Object *parent, 702 const char *id, 703 Error **errp, 704 ...) 705 { 706 va_list vargs; 707 Object *obj; 708 709 va_start(vargs, errp); 710 obj = object_new_with_propv(typename, parent, id, errp, vargs); 711 va_end(vargs); 712 713 return obj; 714 } 715 716 717 Object *object_new_with_propv(const char *typename, 718 Object *parent, 719 const char *id, 720 Error **errp, 721 va_list vargs) 722 { 723 Object *obj; 724 ObjectClass *klass; 725 Error *local_err = NULL; 726 UserCreatable *uc; 727 728 klass = object_class_by_name(typename); 729 if (!klass) { 730 error_setg(errp, "invalid object type: %s", typename); 731 return NULL; 732 } 733 734 if (object_class_is_abstract(klass)) { 735 error_setg(errp, "object type '%s' is abstract", typename); 736 return NULL; 737 } 738 obj = object_new_with_type(klass->type); 739 740 if (object_set_propv(obj, &local_err, vargs) < 0) { 741 goto error; 742 } 743 744 if (id != NULL) { 745 object_property_add_child(parent, id, obj); 746 } 747 748 uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); 749 if (uc) { 750 user_creatable_complete(uc, &local_err); 751 if (local_err) { 752 if (id != NULL) { 753 object_unparent(obj); 754 } 755 goto error; 756 } 757 } 758 759 object_unref(obj); 760 return obj; 761 762 error: 763 error_propagate(errp, local_err); 764 object_unref(obj); 765 return NULL; 766 } 767 768 769 int object_set_props(Object *obj, 770 Error **errp, 771 ...) 772 { 773 va_list vargs; 774 int ret; 775 776 va_start(vargs, errp); 777 ret = object_set_propv(obj, errp, vargs); 778 va_end(vargs); 779 780 return ret; 781 } 782 783 784 int object_set_propv(Object *obj, 785 Error **errp, 786 va_list vargs) 787 { 788 const char *propname; 789 Error *local_err = NULL; 790 791 propname = va_arg(vargs, char *); 792 while (propname != NULL) { 793 const char *value = va_arg(vargs, char *); 794 795 g_assert(value != NULL); 796 object_property_parse(obj, value, propname, &local_err); 797 if (local_err) { 798 error_propagate(errp, local_err); 799 return -1; 800 } 801 propname = va_arg(vargs, char *); 802 } 803 804 return 0; 805 } 806 807 808 Object *object_dynamic_cast(Object *obj, const char *typename) 809 { 810 if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) { 811 return obj; 812 } 813 814 return NULL; 815 } 816 817 Object *object_dynamic_cast_assert(Object *obj, const char *typename, 818 const char *file, int line, const char *func) 819 { 820 trace_object_dynamic_cast_assert(obj ? obj->class->type->name : "(null)", 821 typename, file, line, func); 822 823 #ifdef CONFIG_QOM_CAST_DEBUG 824 int i; 825 Object *inst; 826 827 for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) { 828 if (atomic_read(&obj->class->object_cast_cache[i]) == typename) { 829 goto out; 830 } 831 } 832 833 inst = object_dynamic_cast(obj, typename); 834 835 if (!inst && obj) { 836 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n", 837 file, line, func, obj, typename); 838 abort(); 839 } 840 841 assert(obj == inst); 842 843 if (obj && obj == inst) { 844 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { 845 atomic_set(&obj->class->object_cast_cache[i - 1], 846 atomic_read(&obj->class->object_cast_cache[i])); 847 } 848 atomic_set(&obj->class->object_cast_cache[i - 1], typename); 849 } 850 851 out: 852 #endif 853 return obj; 854 } 855 856 ObjectClass *object_class_dynamic_cast(ObjectClass *class, 857 const char *typename) 858 { 859 ObjectClass *ret = NULL; 860 TypeImpl *target_type; 861 TypeImpl *type; 862 863 if (!class) { 864 return NULL; 865 } 866 867 /* A simple fast path that can trigger a lot for leaf classes. */ 868 type = class->type; 869 if (type->name == typename) { 870 return class; 871 } 872 873 target_type = type_get_by_name(typename); 874 if (!target_type) { 875 /* target class type unknown, so fail the cast */ 876 return NULL; 877 } 878 879 if (type->class->interfaces && 880 type_is_ancestor(target_type, type_interface)) { 881 int found = 0; 882 GSList *i; 883 884 for (i = class->interfaces; i; i = i->next) { 885 ObjectClass *target_class = i->data; 886 887 if (type_is_ancestor(target_class->type, target_type)) { 888 ret = target_class; 889 found++; 890 } 891 } 892 893 /* The match was ambiguous, don't allow a cast */ 894 if (found > 1) { 895 ret = NULL; 896 } 897 } else if (type_is_ancestor(type, target_type)) { 898 ret = class; 899 } 900 901 return ret; 902 } 903 904 ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class, 905 const char *typename, 906 const char *file, int line, 907 const char *func) 908 { 909 ObjectClass *ret; 910 911 trace_object_class_dynamic_cast_assert(class ? class->type->name : "(null)", 912 typename, file, line, func); 913 914 #ifdef CONFIG_QOM_CAST_DEBUG 915 int i; 916 917 for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) { 918 if (atomic_read(&class->class_cast_cache[i]) == typename) { 919 ret = class; 920 goto out; 921 } 922 } 923 #else 924 if (!class || !class->interfaces) { 925 return class; 926 } 927 #endif 928 929 ret = object_class_dynamic_cast(class, typename); 930 if (!ret && class) { 931 fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n", 932 file, line, func, class, typename); 933 abort(); 934 } 935 936 #ifdef CONFIG_QOM_CAST_DEBUG 937 if (class && ret == class) { 938 for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { 939 atomic_set(&class->class_cast_cache[i - 1], 940 atomic_read(&class->class_cast_cache[i])); 941 } 942 atomic_set(&class->class_cast_cache[i - 1], typename); 943 } 944 out: 945 #endif 946 return ret; 947 } 948 949 const char *object_get_typename(const Object *obj) 950 { 951 return obj->class->type->name; 952 } 953 954 ObjectClass *object_get_class(Object *obj) 955 { 956 return obj->class; 957 } 958 959 bool object_class_is_abstract(ObjectClass *klass) 960 { 961 return klass->type->abstract; 962 } 963 964 const char *object_class_get_name(ObjectClass *klass) 965 { 966 return klass->type->name; 967 } 968 969 ObjectClass *object_class_by_name(const char *typename) 970 { 971 TypeImpl *type = type_get_by_name(typename); 972 973 if (!type) { 974 return NULL; 975 } 976 977 type_initialize(type); 978 979 return type->class; 980 } 981 982 ObjectClass *object_class_get_parent(ObjectClass *class) 983 { 984 TypeImpl *type = type_get_parent(class->type); 985 986 if (!type) { 987 return NULL; 988 } 989 990 type_initialize(type); 991 992 return type->class; 993 } 994 995 typedef struct OCFData 996 { 997 void (*fn)(ObjectClass *klass, void *opaque); 998 const char *implements_type; 999 bool include_abstract; 1000 void *opaque; 1001 } OCFData; 1002 1003 static void object_class_foreach_tramp(gpointer key, gpointer value, 1004 gpointer opaque) 1005 { 1006 OCFData *data = opaque; 1007 TypeImpl *type = value; 1008 ObjectClass *k; 1009 1010 type_initialize(type); 1011 k = type->class; 1012 1013 if (!data->include_abstract && type->abstract) { 1014 return; 1015 } 1016 1017 if (data->implements_type && 1018 !object_class_dynamic_cast(k, data->implements_type)) { 1019 return; 1020 } 1021 1022 data->fn(k, data->opaque); 1023 } 1024 1025 void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), 1026 const char *implements_type, bool include_abstract, 1027 void *opaque) 1028 { 1029 OCFData data = { fn, implements_type, include_abstract, opaque }; 1030 1031 enumerating_types = true; 1032 g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data); 1033 enumerating_types = false; 1034 } 1035 1036 static int do_object_child_foreach(Object *obj, 1037 int (*fn)(Object *child, void *opaque), 1038 void *opaque, bool recurse) 1039 { 1040 GHashTableIter iter; 1041 ObjectProperty *prop; 1042 int ret = 0; 1043 1044 g_hash_table_iter_init(&iter, obj->properties); 1045 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { 1046 if (object_property_is_child(prop)) { 1047 Object *child = prop->opaque; 1048 1049 ret = fn(child, opaque); 1050 if (ret != 0) { 1051 break; 1052 } 1053 if (recurse) { 1054 ret = do_object_child_foreach(child, fn, opaque, true); 1055 if (ret != 0) { 1056 break; 1057 } 1058 } 1059 } 1060 } 1061 return ret; 1062 } 1063 1064 int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque), 1065 void *opaque) 1066 { 1067 return do_object_child_foreach(obj, fn, opaque, false); 1068 } 1069 1070 int object_child_foreach_recursive(Object *obj, 1071 int (*fn)(Object *child, void *opaque), 1072 void *opaque) 1073 { 1074 return do_object_child_foreach(obj, fn, opaque, true); 1075 } 1076 1077 static void object_class_get_list_tramp(ObjectClass *klass, void *opaque) 1078 { 1079 GSList **list = opaque; 1080 1081 *list = g_slist_prepend(*list, klass); 1082 } 1083 1084 GSList *object_class_get_list(const char *implements_type, 1085 bool include_abstract) 1086 { 1087 GSList *list = NULL; 1088 1089 object_class_foreach(object_class_get_list_tramp, 1090 implements_type, include_abstract, &list); 1091 return list; 1092 } 1093 1094 static gint object_class_cmp(gconstpointer a, gconstpointer b) 1095 { 1096 return strcasecmp(object_class_get_name((ObjectClass *)a), 1097 object_class_get_name((ObjectClass *)b)); 1098 } 1099 1100 GSList *object_class_get_list_sorted(const char *implements_type, 1101 bool include_abstract) 1102 { 1103 return g_slist_sort(object_class_get_list(implements_type, include_abstract), 1104 object_class_cmp); 1105 } 1106 1107 Object *object_ref(Object *obj) 1108 { 1109 if (!obj) { 1110 return NULL; 1111 } 1112 atomic_inc(&obj->ref); 1113 return obj; 1114 } 1115 1116 void object_unref(Object *obj) 1117 { 1118 if (!obj) { 1119 return; 1120 } 1121 g_assert(obj->ref > 0); 1122 1123 /* parent always holds a reference to its children */ 1124 if (atomic_fetch_dec(&obj->ref) == 1) { 1125 object_finalize(obj); 1126 } 1127 } 1128 1129 static ObjectProperty * 1130 object_property_try_add(Object *obj, const char *name, const char *type, 1131 ObjectPropertyAccessor *get, 1132 ObjectPropertyAccessor *set, 1133 ObjectPropertyRelease *release, 1134 void *opaque, Error **errp) 1135 { 1136 ObjectProperty *prop; 1137 size_t name_len = strlen(name); 1138 1139 if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) { 1140 int i; 1141 ObjectProperty *ret; 1142 char *name_no_array = g_strdup(name); 1143 1144 name_no_array[name_len - 3] = '\0'; 1145 for (i = 0; ; ++i) { 1146 char *full_name = g_strdup_printf("%s[%d]", name_no_array, i); 1147 1148 ret = object_property_try_add(obj, full_name, type, get, set, 1149 release, opaque, NULL); 1150 g_free(full_name); 1151 if (ret) { 1152 break; 1153 } 1154 } 1155 g_free(name_no_array); 1156 return ret; 1157 } 1158 1159 if (object_property_find(obj, name, NULL) != NULL) { 1160 error_setg(errp, "attempt to add duplicate property '%s' to object (type '%s')", 1161 name, object_get_typename(obj)); 1162 return NULL; 1163 } 1164 1165 prop = g_malloc0(sizeof(*prop)); 1166 1167 prop->name = g_strdup(name); 1168 prop->type = g_strdup(type); 1169 1170 prop->get = get; 1171 prop->set = set; 1172 prop->release = release; 1173 prop->opaque = opaque; 1174 1175 g_hash_table_insert(obj->properties, prop->name, prop); 1176 return prop; 1177 } 1178 1179 ObjectProperty * 1180 object_property_add(Object *obj, const char *name, const char *type, 1181 ObjectPropertyAccessor *get, 1182 ObjectPropertyAccessor *set, 1183 ObjectPropertyRelease *release, 1184 void *opaque) 1185 { 1186 return object_property_try_add(obj, name, type, get, set, release, 1187 opaque, &error_abort); 1188 } 1189 1190 ObjectProperty * 1191 object_class_property_add(ObjectClass *klass, 1192 const char *name, 1193 const char *type, 1194 ObjectPropertyAccessor *get, 1195 ObjectPropertyAccessor *set, 1196 ObjectPropertyRelease *release, 1197 void *opaque) 1198 { 1199 ObjectProperty *prop; 1200 1201 assert(!object_class_property_find(klass, name, NULL)); 1202 1203 prop = g_malloc0(sizeof(*prop)); 1204 1205 prop->name = g_strdup(name); 1206 prop->type = g_strdup(type); 1207 1208 prop->get = get; 1209 prop->set = set; 1210 prop->release = release; 1211 prop->opaque = opaque; 1212 1213 g_hash_table_insert(klass->properties, prop->name, prop); 1214 1215 return prop; 1216 } 1217 1218 ObjectProperty *object_property_find(Object *obj, const char *name, 1219 Error **errp) 1220 { 1221 ObjectProperty *prop; 1222 ObjectClass *klass = object_get_class(obj); 1223 1224 prop = object_class_property_find(klass, name, NULL); 1225 if (prop) { 1226 return prop; 1227 } 1228 1229 prop = g_hash_table_lookup(obj->properties, name); 1230 if (prop) { 1231 return prop; 1232 } 1233 1234 error_setg(errp, "Property '.%s' not found", name); 1235 return NULL; 1236 } 1237 1238 void object_property_iter_init(ObjectPropertyIterator *iter, 1239 Object *obj) 1240 { 1241 g_hash_table_iter_init(&iter->iter, obj->properties); 1242 iter->nextclass = object_get_class(obj); 1243 } 1244 1245 ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter) 1246 { 1247 gpointer key, val; 1248 while (!g_hash_table_iter_next(&iter->iter, &key, &val)) { 1249 if (!iter->nextclass) { 1250 return NULL; 1251 } 1252 g_hash_table_iter_init(&iter->iter, iter->nextclass->properties); 1253 iter->nextclass = object_class_get_parent(iter->nextclass); 1254 } 1255 return val; 1256 } 1257 1258 void object_class_property_iter_init(ObjectPropertyIterator *iter, 1259 ObjectClass *klass) 1260 { 1261 g_hash_table_iter_init(&iter->iter, klass->properties); 1262 iter->nextclass = object_class_get_parent(klass); 1263 } 1264 1265 ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name, 1266 Error **errp) 1267 { 1268 ObjectProperty *prop; 1269 ObjectClass *parent_klass; 1270 1271 parent_klass = object_class_get_parent(klass); 1272 if (parent_klass) { 1273 prop = object_class_property_find(parent_klass, name, NULL); 1274 if (prop) { 1275 return prop; 1276 } 1277 } 1278 1279 prop = g_hash_table_lookup(klass->properties, name); 1280 if (!prop) { 1281 error_setg(errp, "Property '.%s' not found", name); 1282 } 1283 return prop; 1284 } 1285 1286 void object_property_del(Object *obj, const char *name) 1287 { 1288 ObjectProperty *prop = g_hash_table_lookup(obj->properties, name); 1289 1290 if (prop->release) { 1291 prop->release(obj, name, prop->opaque); 1292 } 1293 g_hash_table_remove(obj->properties, name); 1294 } 1295 1296 void object_property_get(Object *obj, Visitor *v, const char *name, 1297 Error **errp) 1298 { 1299 ObjectProperty *prop = object_property_find(obj, name, errp); 1300 if (prop == NULL) { 1301 return; 1302 } 1303 1304 if (!prop->get) { 1305 error_setg(errp, QERR_PERMISSION_DENIED); 1306 } else { 1307 prop->get(obj, v, name, prop->opaque, errp); 1308 } 1309 } 1310 1311 void object_property_set(Object *obj, Visitor *v, const char *name, 1312 Error **errp) 1313 { 1314 ObjectProperty *prop = object_property_find(obj, name, errp); 1315 if (prop == NULL) { 1316 return; 1317 } 1318 1319 if (!prop->set) { 1320 error_setg(errp, QERR_PERMISSION_DENIED); 1321 } else { 1322 prop->set(obj, v, name, prop->opaque, errp); 1323 } 1324 } 1325 1326 void object_property_set_str(Object *obj, const char *value, 1327 const char *name, Error **errp) 1328 { 1329 QString *qstr = qstring_from_str(value); 1330 object_property_set_qobject(obj, QOBJECT(qstr), name, errp); 1331 1332 qobject_unref(qstr); 1333 } 1334 1335 char *object_property_get_str(Object *obj, const char *name, 1336 Error **errp) 1337 { 1338 QObject *ret = object_property_get_qobject(obj, name, errp); 1339 char *retval; 1340 1341 if (!ret) { 1342 return NULL; 1343 } 1344 1345 retval = g_strdup(qobject_get_try_str(ret)); 1346 if (!retval) { 1347 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "string"); 1348 } 1349 1350 qobject_unref(ret); 1351 return retval; 1352 } 1353 1354 void object_property_set_link(Object *obj, Object *value, 1355 const char *name, Error **errp) 1356 { 1357 if (value) { 1358 char *path = object_get_canonical_path(value); 1359 object_property_set_str(obj, path, name, errp); 1360 g_free(path); 1361 } else { 1362 object_property_set_str(obj, "", name, errp); 1363 } 1364 } 1365 1366 Object *object_property_get_link(Object *obj, const char *name, 1367 Error **errp) 1368 { 1369 char *str = object_property_get_str(obj, name, errp); 1370 Object *target = NULL; 1371 1372 if (str && *str) { 1373 target = object_resolve_path(str, NULL); 1374 if (!target) { 1375 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, 1376 "Device '%s' not found", str); 1377 } 1378 } 1379 1380 g_free(str); 1381 return target; 1382 } 1383 1384 void object_property_set_bool(Object *obj, bool value, 1385 const char *name, Error **errp) 1386 { 1387 QBool *qbool = qbool_from_bool(value); 1388 object_property_set_qobject(obj, QOBJECT(qbool), name, errp); 1389 1390 qobject_unref(qbool); 1391 } 1392 1393 bool object_property_get_bool(Object *obj, const char *name, 1394 Error **errp) 1395 { 1396 QObject *ret = object_property_get_qobject(obj, name, errp); 1397 QBool *qbool; 1398 bool retval; 1399 1400 if (!ret) { 1401 return false; 1402 } 1403 qbool = qobject_to(QBool, ret); 1404 if (!qbool) { 1405 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "boolean"); 1406 retval = false; 1407 } else { 1408 retval = qbool_get_bool(qbool); 1409 } 1410 1411 qobject_unref(ret); 1412 return retval; 1413 } 1414 1415 void object_property_set_int(Object *obj, int64_t value, 1416 const char *name, Error **errp) 1417 { 1418 QNum *qnum = qnum_from_int(value); 1419 object_property_set_qobject(obj, QOBJECT(qnum), name, errp); 1420 1421 qobject_unref(qnum); 1422 } 1423 1424 int64_t object_property_get_int(Object *obj, const char *name, 1425 Error **errp) 1426 { 1427 QObject *ret = object_property_get_qobject(obj, name, errp); 1428 QNum *qnum; 1429 int64_t retval; 1430 1431 if (!ret) { 1432 return -1; 1433 } 1434 1435 qnum = qobject_to(QNum, ret); 1436 if (!qnum || !qnum_get_try_int(qnum, &retval)) { 1437 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "int"); 1438 retval = -1; 1439 } 1440 1441 qobject_unref(ret); 1442 return retval; 1443 } 1444 1445 static void object_property_init_defval(Object *obj, ObjectProperty *prop) 1446 { 1447 Visitor *v = qobject_input_visitor_new(prop->defval); 1448 1449 assert(prop->set != NULL); 1450 prop->set(obj, v, prop->name, prop->opaque, &error_abort); 1451 1452 visit_free(v); 1453 } 1454 1455 static void object_property_set_default(ObjectProperty *prop, QObject *defval) 1456 { 1457 assert(!prop->defval); 1458 assert(!prop->init); 1459 1460 prop->defval = defval; 1461 prop->init = object_property_init_defval; 1462 } 1463 1464 void object_property_set_default_bool(ObjectProperty *prop, bool value) 1465 { 1466 object_property_set_default(prop, QOBJECT(qbool_from_bool(value))); 1467 } 1468 1469 void object_property_set_default_str(ObjectProperty *prop, const char *value) 1470 { 1471 object_property_set_default(prop, QOBJECT(qstring_from_str(value))); 1472 } 1473 1474 void object_property_set_default_int(ObjectProperty *prop, int64_t value) 1475 { 1476 object_property_set_default(prop, QOBJECT(qnum_from_int(value))); 1477 } 1478 1479 void object_property_set_default_uint(ObjectProperty *prop, uint64_t value) 1480 { 1481 object_property_set_default(prop, QOBJECT(qnum_from_uint(value))); 1482 } 1483 1484 void object_property_set_uint(Object *obj, uint64_t value, 1485 const char *name, Error **errp) 1486 { 1487 QNum *qnum = qnum_from_uint(value); 1488 1489 object_property_set_qobject(obj, QOBJECT(qnum), name, errp); 1490 qobject_unref(qnum); 1491 } 1492 1493 uint64_t object_property_get_uint(Object *obj, const char *name, 1494 Error **errp) 1495 { 1496 QObject *ret = object_property_get_qobject(obj, name, errp); 1497 QNum *qnum; 1498 uint64_t retval; 1499 1500 if (!ret) { 1501 return 0; 1502 } 1503 qnum = qobject_to(QNum, ret); 1504 if (!qnum || !qnum_get_try_uint(qnum, &retval)) { 1505 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, "uint"); 1506 retval = 0; 1507 } 1508 1509 qobject_unref(ret); 1510 return retval; 1511 } 1512 1513 typedef struct EnumProperty { 1514 const QEnumLookup *lookup; 1515 int (*get)(Object *, Error **); 1516 void (*set)(Object *, int, Error **); 1517 } EnumProperty; 1518 1519 int object_property_get_enum(Object *obj, const char *name, 1520 const char *typename, Error **errp) 1521 { 1522 char *str; 1523 int ret; 1524 ObjectProperty *prop = object_property_find(obj, name, errp); 1525 EnumProperty *enumprop; 1526 1527 if (prop == NULL) { 1528 return 0; 1529 } 1530 1531 if (!g_str_equal(prop->type, typename)) { 1532 error_setg(errp, "Property %s on %s is not '%s' enum type", 1533 name, object_class_get_name( 1534 object_get_class(obj)), typename); 1535 return 0; 1536 } 1537 1538 enumprop = prop->opaque; 1539 1540 str = object_property_get_str(obj, name, errp); 1541 if (!str) { 1542 return 0; 1543 } 1544 1545 ret = qapi_enum_parse(enumprop->lookup, str, -1, errp); 1546 g_free(str); 1547 1548 return ret; 1549 } 1550 1551 void object_property_parse(Object *obj, const char *string, 1552 const char *name, Error **errp) 1553 { 1554 Visitor *v = string_input_visitor_new(string); 1555 object_property_set(obj, v, name, errp); 1556 visit_free(v); 1557 } 1558 1559 char *object_property_print(Object *obj, const char *name, bool human, 1560 Error **errp) 1561 { 1562 Visitor *v; 1563 char *string = NULL; 1564 Error *local_err = NULL; 1565 1566 v = string_output_visitor_new(human, &string); 1567 object_property_get(obj, v, name, &local_err); 1568 if (local_err) { 1569 error_propagate(errp, local_err); 1570 goto out; 1571 } 1572 1573 visit_complete(v, &string); 1574 1575 out: 1576 visit_free(v); 1577 return string; 1578 } 1579 1580 const char *object_property_get_type(Object *obj, const char *name, Error **errp) 1581 { 1582 ObjectProperty *prop = object_property_find(obj, name, errp); 1583 if (prop == NULL) { 1584 return NULL; 1585 } 1586 1587 return prop->type; 1588 } 1589 1590 Object *object_get_root(void) 1591 { 1592 static Object *root; 1593 1594 if (!root) { 1595 root = object_new("container"); 1596 } 1597 1598 return root; 1599 } 1600 1601 Object *object_get_objects_root(void) 1602 { 1603 return container_get(object_get_root(), "/objects"); 1604 } 1605 1606 Object *object_get_internal_root(void) 1607 { 1608 static Object *internal_root; 1609 1610 if (!internal_root) { 1611 internal_root = object_new("container"); 1612 } 1613 1614 return internal_root; 1615 } 1616 1617 static void object_get_child_property(Object *obj, Visitor *v, 1618 const char *name, void *opaque, 1619 Error **errp) 1620 { 1621 Object *child = opaque; 1622 char *path; 1623 1624 path = object_get_canonical_path(child); 1625 visit_type_str(v, name, &path, errp); 1626 g_free(path); 1627 } 1628 1629 static Object *object_resolve_child_property(Object *parent, void *opaque, 1630 const char *part) 1631 { 1632 return opaque; 1633 } 1634 1635 static void object_finalize_child_property(Object *obj, const char *name, 1636 void *opaque) 1637 { 1638 Object *child = opaque; 1639 1640 if (child->class->unparent) { 1641 (child->class->unparent)(child); 1642 } 1643 child->parent = NULL; 1644 object_unref(child); 1645 } 1646 1647 ObjectProperty * 1648 object_property_add_child(Object *obj, const char *name, 1649 Object *child) 1650 { 1651 g_autofree char *type = NULL; 1652 ObjectProperty *op; 1653 1654 assert(!child->parent); 1655 1656 type = g_strdup_printf("child<%s>", object_get_typename(child)); 1657 1658 op = object_property_add(obj, name, type, object_get_child_property, NULL, 1659 object_finalize_child_property, child); 1660 op->resolve = object_resolve_child_property; 1661 object_ref(child); 1662 child->parent = obj; 1663 return op; 1664 } 1665 1666 void object_property_allow_set_link(const Object *obj, const char *name, 1667 Object *val, Error **errp) 1668 { 1669 /* Allow the link to be set, always */ 1670 } 1671 1672 typedef struct { 1673 union { 1674 Object **targetp; 1675 Object *target; /* if OBJ_PROP_LINK_DIRECT, when holding the pointer */ 1676 ptrdiff_t offset; /* if OBJ_PROP_LINK_CLASS */ 1677 }; 1678 void (*check)(const Object *, const char *, Object *, Error **); 1679 ObjectPropertyLinkFlags flags; 1680 } LinkProperty; 1681 1682 static Object ** 1683 object_link_get_targetp(Object *obj, LinkProperty *lprop) 1684 { 1685 if (lprop->flags & OBJ_PROP_LINK_DIRECT) { 1686 return &lprop->target; 1687 } else if (lprop->flags & OBJ_PROP_LINK_CLASS) { 1688 return (void *)obj + lprop->offset; 1689 } else { 1690 return lprop->targetp; 1691 } 1692 } 1693 1694 static void object_get_link_property(Object *obj, Visitor *v, 1695 const char *name, void *opaque, 1696 Error **errp) 1697 { 1698 LinkProperty *lprop = opaque; 1699 Object **targetp = object_link_get_targetp(obj, lprop); 1700 char *path; 1701 1702 if (*targetp) { 1703 path = object_get_canonical_path(*targetp); 1704 visit_type_str(v, name, &path, errp); 1705 g_free(path); 1706 } else { 1707 path = (char *)""; 1708 visit_type_str(v, name, &path, errp); 1709 } 1710 } 1711 1712 /* 1713 * object_resolve_link: 1714 * 1715 * Lookup an object and ensure its type matches the link property type. This 1716 * is similar to object_resolve_path() except type verification against the 1717 * link property is performed. 1718 * 1719 * Returns: The matched object or NULL on path lookup failures. 1720 */ 1721 static Object *object_resolve_link(Object *obj, const char *name, 1722 const char *path, Error **errp) 1723 { 1724 const char *type; 1725 char *target_type; 1726 bool ambiguous = false; 1727 Object *target; 1728 1729 /* Go from link<FOO> to FOO. */ 1730 type = object_property_get_type(obj, name, NULL); 1731 target_type = g_strndup(&type[5], strlen(type) - 6); 1732 target = object_resolve_path_type(path, target_type, &ambiguous); 1733 1734 if (ambiguous) { 1735 error_setg(errp, "Path '%s' does not uniquely identify an object", 1736 path); 1737 } else if (!target) { 1738 target = object_resolve_path(path, &ambiguous); 1739 if (target || ambiguous) { 1740 error_setg(errp, QERR_INVALID_PARAMETER_TYPE, name, target_type); 1741 } else { 1742 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, 1743 "Device '%s' not found", path); 1744 } 1745 target = NULL; 1746 } 1747 g_free(target_type); 1748 1749 return target; 1750 } 1751 1752 static void object_set_link_property(Object *obj, Visitor *v, 1753 const char *name, void *opaque, 1754 Error **errp) 1755 { 1756 Error *local_err = NULL; 1757 LinkProperty *prop = opaque; 1758 Object **targetp = object_link_get_targetp(obj, prop); 1759 Object *old_target = *targetp; 1760 Object *new_target = NULL; 1761 char *path = NULL; 1762 1763 visit_type_str(v, name, &path, &local_err); 1764 1765 if (!local_err && strcmp(path, "") != 0) { 1766 new_target = object_resolve_link(obj, name, path, &local_err); 1767 } 1768 1769 g_free(path); 1770 if (local_err) { 1771 error_propagate(errp, local_err); 1772 return; 1773 } 1774 1775 prop->check(obj, name, new_target, &local_err); 1776 if (local_err) { 1777 error_propagate(errp, local_err); 1778 return; 1779 } 1780 1781 *targetp = new_target; 1782 if (prop->flags & OBJ_PROP_LINK_STRONG) { 1783 object_ref(new_target); 1784 object_unref(old_target); 1785 } 1786 } 1787 1788 static Object *object_resolve_link_property(Object *parent, void *opaque, 1789 const char *part) 1790 { 1791 LinkProperty *lprop = opaque; 1792 1793 return *object_link_get_targetp(parent, lprop); 1794 } 1795 1796 static void object_release_link_property(Object *obj, const char *name, 1797 void *opaque) 1798 { 1799 LinkProperty *prop = opaque; 1800 Object **targetp = object_link_get_targetp(obj, prop); 1801 1802 if ((prop->flags & OBJ_PROP_LINK_STRONG) && *targetp) { 1803 object_unref(*targetp); 1804 } 1805 if (!(prop->flags & OBJ_PROP_LINK_CLASS)) { 1806 g_free(prop); 1807 } 1808 } 1809 1810 static ObjectProperty * 1811 object_add_link_prop(Object *obj, const char *name, 1812 const char *type, void *ptr, 1813 void (*check)(const Object *, const char *, 1814 Object *, Error **), 1815 ObjectPropertyLinkFlags flags) 1816 { 1817 LinkProperty *prop = g_malloc(sizeof(*prop)); 1818 g_autofree char *full_type = NULL; 1819 ObjectProperty *op; 1820 1821 if (flags & OBJ_PROP_LINK_DIRECT) { 1822 prop->target = ptr; 1823 } else { 1824 prop->targetp = ptr; 1825 } 1826 prop->check = check; 1827 prop->flags = flags; 1828 1829 full_type = g_strdup_printf("link<%s>", type); 1830 1831 op = object_property_add(obj, name, full_type, 1832 object_get_link_property, 1833 check ? object_set_link_property : NULL, 1834 object_release_link_property, 1835 prop); 1836 op->resolve = object_resolve_link_property; 1837 return op; 1838 } 1839 1840 ObjectProperty * 1841 object_property_add_link(Object *obj, const char *name, 1842 const char *type, Object **targetp, 1843 void (*check)(const Object *, const char *, 1844 Object *, Error **), 1845 ObjectPropertyLinkFlags flags) 1846 { 1847 return object_add_link_prop(obj, name, type, targetp, check, flags); 1848 } 1849 1850 ObjectProperty * 1851 object_class_property_add_link(ObjectClass *oc, 1852 const char *name, 1853 const char *type, ptrdiff_t offset, 1854 void (*check)(const Object *obj, const char *name, 1855 Object *val, Error **errp), 1856 ObjectPropertyLinkFlags flags) 1857 { 1858 LinkProperty *prop = g_new0(LinkProperty, 1); 1859 char *full_type; 1860 ObjectProperty *op; 1861 1862 prop->offset = offset; 1863 prop->check = check; 1864 prop->flags = flags | OBJ_PROP_LINK_CLASS; 1865 1866 full_type = g_strdup_printf("link<%s>", type); 1867 1868 op = object_class_property_add(oc, name, full_type, 1869 object_get_link_property, 1870 check ? object_set_link_property : NULL, 1871 object_release_link_property, 1872 prop); 1873 1874 op->resolve = object_resolve_link_property; 1875 1876 g_free(full_type); 1877 return op; 1878 } 1879 1880 ObjectProperty * 1881 object_property_add_const_link(Object *obj, const char *name, 1882 Object *target) 1883 { 1884 return object_add_link_prop(obj, name, 1885 object_get_typename(target), target, 1886 NULL, OBJ_PROP_LINK_DIRECT); 1887 } 1888 1889 char *object_get_canonical_path_component(Object *obj) 1890 { 1891 ObjectProperty *prop = NULL; 1892 GHashTableIter iter; 1893 1894 if (obj->parent == NULL) { 1895 return NULL; 1896 } 1897 1898 g_hash_table_iter_init(&iter, obj->parent->properties); 1899 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { 1900 if (!object_property_is_child(prop)) { 1901 continue; 1902 } 1903 1904 if (prop->opaque == obj) { 1905 return g_strdup(prop->name); 1906 } 1907 } 1908 1909 /* obj had a parent but was not a child, should never happen */ 1910 g_assert_not_reached(); 1911 return NULL; 1912 } 1913 1914 char *object_get_canonical_path(Object *obj) 1915 { 1916 Object *root = object_get_root(); 1917 char *newpath, *path = NULL; 1918 1919 if (obj == root) { 1920 return g_strdup("/"); 1921 } 1922 1923 do { 1924 char *component = object_get_canonical_path_component(obj); 1925 1926 if (!component) { 1927 /* A canonical path must be complete, so discard what was 1928 * collected so far. 1929 */ 1930 g_free(path); 1931 return NULL; 1932 } 1933 1934 newpath = g_strdup_printf("/%s%s", component, path ? path : ""); 1935 g_free(path); 1936 g_free(component); 1937 path = newpath; 1938 obj = obj->parent; 1939 } while (obj != root); 1940 1941 return path; 1942 } 1943 1944 Object *object_resolve_path_component(Object *parent, const char *part) 1945 { 1946 ObjectProperty *prop = object_property_find(parent, part, NULL); 1947 if (prop == NULL) { 1948 return NULL; 1949 } 1950 1951 if (prop->resolve) { 1952 return prop->resolve(parent, prop->opaque, part); 1953 } else { 1954 return NULL; 1955 } 1956 } 1957 1958 static Object *object_resolve_abs_path(Object *parent, 1959 char **parts, 1960 const char *typename, 1961 int index) 1962 { 1963 Object *child; 1964 1965 if (parts[index] == NULL) { 1966 return object_dynamic_cast(parent, typename); 1967 } 1968 1969 if (strcmp(parts[index], "") == 0) { 1970 return object_resolve_abs_path(parent, parts, typename, index + 1); 1971 } 1972 1973 child = object_resolve_path_component(parent, parts[index]); 1974 if (!child) { 1975 return NULL; 1976 } 1977 1978 return object_resolve_abs_path(child, parts, typename, index + 1); 1979 } 1980 1981 static Object *object_resolve_partial_path(Object *parent, 1982 char **parts, 1983 const char *typename, 1984 bool *ambiguous) 1985 { 1986 Object *obj; 1987 GHashTableIter iter; 1988 ObjectProperty *prop; 1989 1990 obj = object_resolve_abs_path(parent, parts, typename, 0); 1991 1992 g_hash_table_iter_init(&iter, parent->properties); 1993 while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { 1994 Object *found; 1995 1996 if (!object_property_is_child(prop)) { 1997 continue; 1998 } 1999 2000 found = object_resolve_partial_path(prop->opaque, parts, 2001 typename, ambiguous); 2002 if (found) { 2003 if (obj) { 2004 *ambiguous = true; 2005 return NULL; 2006 } 2007 obj = found; 2008 } 2009 2010 if (*ambiguous) { 2011 return NULL; 2012 } 2013 } 2014 2015 return obj; 2016 } 2017 2018 Object *object_resolve_path_type(const char *path, const char *typename, 2019 bool *ambiguousp) 2020 { 2021 Object *obj; 2022 char **parts; 2023 2024 parts = g_strsplit(path, "/", 0); 2025 assert(parts); 2026 2027 if (parts[0] == NULL || strcmp(parts[0], "") != 0) { 2028 bool ambiguous = false; 2029 obj = object_resolve_partial_path(object_get_root(), parts, 2030 typename, &ambiguous); 2031 if (ambiguousp) { 2032 *ambiguousp = ambiguous; 2033 } 2034 } else { 2035 obj = object_resolve_abs_path(object_get_root(), parts, typename, 1); 2036 } 2037 2038 g_strfreev(parts); 2039 2040 return obj; 2041 } 2042 2043 Object *object_resolve_path(const char *path, bool *ambiguous) 2044 { 2045 return object_resolve_path_type(path, TYPE_OBJECT, ambiguous); 2046 } 2047 2048 typedef struct StringProperty 2049 { 2050 char *(*get)(Object *, Error **); 2051 void (*set)(Object *, const char *, Error **); 2052 } StringProperty; 2053 2054 static void property_get_str(Object *obj, Visitor *v, const char *name, 2055 void *opaque, Error **errp) 2056 { 2057 StringProperty *prop = opaque; 2058 char *value; 2059 Error *err = NULL; 2060 2061 value = prop->get(obj, &err); 2062 if (err) { 2063 error_propagate(errp, err); 2064 return; 2065 } 2066 2067 visit_type_str(v, name, &value, errp); 2068 g_free(value); 2069 } 2070 2071 static void property_set_str(Object *obj, Visitor *v, const char *name, 2072 void *opaque, Error **errp) 2073 { 2074 StringProperty *prop = opaque; 2075 char *value; 2076 Error *local_err = NULL; 2077 2078 visit_type_str(v, name, &value, &local_err); 2079 if (local_err) { 2080 error_propagate(errp, local_err); 2081 return; 2082 } 2083 2084 prop->set(obj, value, errp); 2085 g_free(value); 2086 } 2087 2088 static void property_release_str(Object *obj, const char *name, 2089 void *opaque) 2090 { 2091 StringProperty *prop = opaque; 2092 g_free(prop); 2093 } 2094 2095 ObjectProperty * 2096 object_property_add_str(Object *obj, const char *name, 2097 char *(*get)(Object *, Error **), 2098 void (*set)(Object *, const char *, Error **)) 2099 { 2100 StringProperty *prop = g_malloc0(sizeof(*prop)); 2101 2102 prop->get = get; 2103 prop->set = set; 2104 2105 return object_property_add(obj, name, "string", 2106 get ? property_get_str : NULL, 2107 set ? property_set_str : NULL, 2108 property_release_str, 2109 prop); 2110 } 2111 2112 ObjectProperty * 2113 object_class_property_add_str(ObjectClass *klass, const char *name, 2114 char *(*get)(Object *, Error **), 2115 void (*set)(Object *, const char *, 2116 Error **)) 2117 { 2118 StringProperty *prop = g_malloc0(sizeof(*prop)); 2119 2120 prop->get = get; 2121 prop->set = set; 2122 2123 return object_class_property_add(klass, name, "string", 2124 get ? property_get_str : NULL, 2125 set ? property_set_str : NULL, 2126 NULL, 2127 prop); 2128 } 2129 2130 typedef struct BoolProperty 2131 { 2132 bool (*get)(Object *, Error **); 2133 void (*set)(Object *, bool, Error **); 2134 } BoolProperty; 2135 2136 static void property_get_bool(Object *obj, Visitor *v, const char *name, 2137 void *opaque, Error **errp) 2138 { 2139 BoolProperty *prop = opaque; 2140 bool value; 2141 Error *err = NULL; 2142 2143 value = prop->get(obj, &err); 2144 if (err) { 2145 error_propagate(errp, err); 2146 return; 2147 } 2148 2149 visit_type_bool(v, name, &value, errp); 2150 } 2151 2152 static void property_set_bool(Object *obj, Visitor *v, const char *name, 2153 void *opaque, Error **errp) 2154 { 2155 BoolProperty *prop = opaque; 2156 bool value; 2157 Error *local_err = NULL; 2158 2159 visit_type_bool(v, name, &value, &local_err); 2160 if (local_err) { 2161 error_propagate(errp, local_err); 2162 return; 2163 } 2164 2165 prop->set(obj, value, errp); 2166 } 2167 2168 static void property_release_bool(Object *obj, const char *name, 2169 void *opaque) 2170 { 2171 BoolProperty *prop = opaque; 2172 g_free(prop); 2173 } 2174 2175 ObjectProperty * 2176 object_property_add_bool(Object *obj, const char *name, 2177 bool (*get)(Object *, Error **), 2178 void (*set)(Object *, bool, Error **)) 2179 { 2180 BoolProperty *prop = g_malloc0(sizeof(*prop)); 2181 2182 prop->get = get; 2183 prop->set = set; 2184 2185 return object_property_add(obj, name, "bool", 2186 get ? property_get_bool : NULL, 2187 set ? property_set_bool : NULL, 2188 property_release_bool, 2189 prop); 2190 } 2191 2192 ObjectProperty * 2193 object_class_property_add_bool(ObjectClass *klass, const char *name, 2194 bool (*get)(Object *, Error **), 2195 void (*set)(Object *, bool, Error **)) 2196 { 2197 BoolProperty *prop = g_malloc0(sizeof(*prop)); 2198 2199 prop->get = get; 2200 prop->set = set; 2201 2202 return object_class_property_add(klass, name, "bool", 2203 get ? property_get_bool : NULL, 2204 set ? property_set_bool : NULL, 2205 NULL, 2206 prop); 2207 } 2208 2209 static void property_get_enum(Object *obj, Visitor *v, const char *name, 2210 void *opaque, Error **errp) 2211 { 2212 EnumProperty *prop = opaque; 2213 int value; 2214 Error *err = NULL; 2215 2216 value = prop->get(obj, &err); 2217 if (err) { 2218 error_propagate(errp, err); 2219 return; 2220 } 2221 2222 visit_type_enum(v, name, &value, prop->lookup, errp); 2223 } 2224 2225 static void property_set_enum(Object *obj, Visitor *v, const char *name, 2226 void *opaque, Error **errp) 2227 { 2228 EnumProperty *prop = opaque; 2229 int value; 2230 Error *err = NULL; 2231 2232 visit_type_enum(v, name, &value, prop->lookup, &err); 2233 if (err) { 2234 error_propagate(errp, err); 2235 return; 2236 } 2237 prop->set(obj, value, errp); 2238 } 2239 2240 static void property_release_enum(Object *obj, const char *name, 2241 void *opaque) 2242 { 2243 EnumProperty *prop = opaque; 2244 g_free(prop); 2245 } 2246 2247 ObjectProperty * 2248 object_property_add_enum(Object *obj, const char *name, 2249 const char *typename, 2250 const QEnumLookup *lookup, 2251 int (*get)(Object *, Error **), 2252 void (*set)(Object *, int, Error **)) 2253 { 2254 EnumProperty *prop = g_malloc(sizeof(*prop)); 2255 2256 prop->lookup = lookup; 2257 prop->get = get; 2258 prop->set = set; 2259 2260 return object_property_add(obj, name, typename, 2261 get ? property_get_enum : NULL, 2262 set ? property_set_enum : NULL, 2263 property_release_enum, 2264 prop); 2265 } 2266 2267 ObjectProperty * 2268 object_class_property_add_enum(ObjectClass *klass, const char *name, 2269 const char *typename, 2270 const QEnumLookup *lookup, 2271 int (*get)(Object *, Error **), 2272 void (*set)(Object *, int, Error **)) 2273 { 2274 EnumProperty *prop = g_malloc(sizeof(*prop)); 2275 2276 prop->lookup = lookup; 2277 prop->get = get; 2278 prop->set = set; 2279 2280 return object_class_property_add(klass, name, typename, 2281 get ? property_get_enum : NULL, 2282 set ? property_set_enum : NULL, 2283 NULL, 2284 prop); 2285 } 2286 2287 typedef struct TMProperty { 2288 void (*get)(Object *, struct tm *, Error **); 2289 } TMProperty; 2290 2291 static void property_get_tm(Object *obj, Visitor *v, const char *name, 2292 void *opaque, Error **errp) 2293 { 2294 TMProperty *prop = opaque; 2295 Error *err = NULL; 2296 struct tm value; 2297 2298 prop->get(obj, &value, &err); 2299 if (err) { 2300 goto out; 2301 } 2302 2303 visit_start_struct(v, name, NULL, 0, &err); 2304 if (err) { 2305 goto out; 2306 } 2307 visit_type_int32(v, "tm_year", &value.tm_year, &err); 2308 if (err) { 2309 goto out_end; 2310 } 2311 visit_type_int32(v, "tm_mon", &value.tm_mon, &err); 2312 if (err) { 2313 goto out_end; 2314 } 2315 visit_type_int32(v, "tm_mday", &value.tm_mday, &err); 2316 if (err) { 2317 goto out_end; 2318 } 2319 visit_type_int32(v, "tm_hour", &value.tm_hour, &err); 2320 if (err) { 2321 goto out_end; 2322 } 2323 visit_type_int32(v, "tm_min", &value.tm_min, &err); 2324 if (err) { 2325 goto out_end; 2326 } 2327 visit_type_int32(v, "tm_sec", &value.tm_sec, &err); 2328 if (err) { 2329 goto out_end; 2330 } 2331 visit_check_struct(v, &err); 2332 out_end: 2333 visit_end_struct(v, NULL); 2334 out: 2335 error_propagate(errp, err); 2336 2337 } 2338 2339 static void property_release_tm(Object *obj, const char *name, 2340 void *opaque) 2341 { 2342 TMProperty *prop = opaque; 2343 g_free(prop); 2344 } 2345 2346 ObjectProperty * 2347 object_property_add_tm(Object *obj, const char *name, 2348 void (*get)(Object *, struct tm *, Error **)) 2349 { 2350 TMProperty *prop = g_malloc0(sizeof(*prop)); 2351 2352 prop->get = get; 2353 2354 return object_property_add(obj, name, "struct tm", 2355 get ? property_get_tm : NULL, NULL, 2356 property_release_tm, 2357 prop); 2358 } 2359 2360 ObjectProperty * 2361 object_class_property_add_tm(ObjectClass *klass, const char *name, 2362 void (*get)(Object *, struct tm *, Error **)) 2363 { 2364 TMProperty *prop = g_malloc0(sizeof(*prop)); 2365 2366 prop->get = get; 2367 2368 return object_class_property_add(klass, name, "struct tm", 2369 get ? property_get_tm : NULL, 2370 NULL, NULL, prop); 2371 } 2372 2373 static char *qdev_get_type(Object *obj, Error **errp) 2374 { 2375 return g_strdup(object_get_typename(obj)); 2376 } 2377 2378 static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name, 2379 void *opaque, Error **errp) 2380 { 2381 uint8_t value = *(uint8_t *)opaque; 2382 visit_type_uint8(v, name, &value, errp); 2383 } 2384 2385 static void property_set_uint8_ptr(Object *obj, Visitor *v, const char *name, 2386 void *opaque, Error **errp) 2387 { 2388 uint8_t *field = opaque; 2389 uint8_t value; 2390 Error *local_err = NULL; 2391 2392 visit_type_uint8(v, name, &value, &local_err); 2393 if (local_err) { 2394 error_propagate(errp, local_err); 2395 return; 2396 } 2397 2398 *field = value; 2399 } 2400 2401 static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name, 2402 void *opaque, Error **errp) 2403 { 2404 uint16_t value = *(uint16_t *)opaque; 2405 visit_type_uint16(v, name, &value, errp); 2406 } 2407 2408 static void property_set_uint16_ptr(Object *obj, Visitor *v, const char *name, 2409 void *opaque, Error **errp) 2410 { 2411 uint16_t *field = opaque; 2412 uint16_t value; 2413 Error *local_err = NULL; 2414 2415 visit_type_uint16(v, name, &value, &local_err); 2416 if (local_err) { 2417 error_propagate(errp, local_err); 2418 return; 2419 } 2420 2421 *field = value; 2422 } 2423 2424 static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name, 2425 void *opaque, Error **errp) 2426 { 2427 uint32_t value = *(uint32_t *)opaque; 2428 visit_type_uint32(v, name, &value, errp); 2429 } 2430 2431 static void property_set_uint32_ptr(Object *obj, Visitor *v, const char *name, 2432 void *opaque, Error **errp) 2433 { 2434 uint32_t *field = opaque; 2435 uint32_t value; 2436 Error *local_err = NULL; 2437 2438 visit_type_uint32(v, name, &value, &local_err); 2439 if (local_err) { 2440 error_propagate(errp, local_err); 2441 return; 2442 } 2443 2444 *field = value; 2445 } 2446 2447 static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name, 2448 void *opaque, Error **errp) 2449 { 2450 uint64_t value = *(uint64_t *)opaque; 2451 visit_type_uint64(v, name, &value, errp); 2452 } 2453 2454 static void property_set_uint64_ptr(Object *obj, Visitor *v, const char *name, 2455 void *opaque, Error **errp) 2456 { 2457 uint64_t *field = opaque; 2458 uint64_t value; 2459 Error *local_err = NULL; 2460 2461 visit_type_uint64(v, name, &value, &local_err); 2462 if (local_err) { 2463 error_propagate(errp, local_err); 2464 return; 2465 } 2466 2467 *field = value; 2468 } 2469 2470 ObjectProperty * 2471 object_property_add_uint8_ptr(Object *obj, const char *name, 2472 const uint8_t *v, 2473 ObjectPropertyFlags flags) 2474 { 2475 ObjectPropertyAccessor *getter = NULL; 2476 ObjectPropertyAccessor *setter = NULL; 2477 2478 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2479 getter = property_get_uint8_ptr; 2480 } 2481 2482 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2483 setter = property_set_uint8_ptr; 2484 } 2485 2486 return object_property_add(obj, name, "uint8", 2487 getter, setter, NULL, (void *)v); 2488 } 2489 2490 ObjectProperty * 2491 object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name, 2492 const uint8_t *v, 2493 ObjectPropertyFlags flags) 2494 { 2495 ObjectPropertyAccessor *getter = NULL; 2496 ObjectPropertyAccessor *setter = NULL; 2497 2498 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2499 getter = property_get_uint8_ptr; 2500 } 2501 2502 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2503 setter = property_set_uint8_ptr; 2504 } 2505 2506 return object_class_property_add(klass, name, "uint8", 2507 getter, setter, NULL, (void *)v); 2508 } 2509 2510 ObjectProperty * 2511 object_property_add_uint16_ptr(Object *obj, const char *name, 2512 const uint16_t *v, 2513 ObjectPropertyFlags flags) 2514 { 2515 ObjectPropertyAccessor *getter = NULL; 2516 ObjectPropertyAccessor *setter = NULL; 2517 2518 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2519 getter = property_get_uint16_ptr; 2520 } 2521 2522 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2523 setter = property_set_uint16_ptr; 2524 } 2525 2526 return object_property_add(obj, name, "uint16", 2527 getter, setter, NULL, (void *)v); 2528 } 2529 2530 ObjectProperty * 2531 object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name, 2532 const uint16_t *v, 2533 ObjectPropertyFlags flags) 2534 { 2535 ObjectPropertyAccessor *getter = NULL; 2536 ObjectPropertyAccessor *setter = NULL; 2537 2538 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2539 getter = property_get_uint16_ptr; 2540 } 2541 2542 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2543 setter = property_set_uint16_ptr; 2544 } 2545 2546 return object_class_property_add(klass, name, "uint16", 2547 getter, setter, NULL, (void *)v); 2548 } 2549 2550 ObjectProperty * 2551 object_property_add_uint32_ptr(Object *obj, const char *name, 2552 const uint32_t *v, 2553 ObjectPropertyFlags flags) 2554 { 2555 ObjectPropertyAccessor *getter = NULL; 2556 ObjectPropertyAccessor *setter = NULL; 2557 2558 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2559 getter = property_get_uint32_ptr; 2560 } 2561 2562 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2563 setter = property_set_uint32_ptr; 2564 } 2565 2566 return object_property_add(obj, name, "uint32", 2567 getter, setter, NULL, (void *)v); 2568 } 2569 2570 ObjectProperty * 2571 object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name, 2572 const uint32_t *v, 2573 ObjectPropertyFlags flags) 2574 { 2575 ObjectPropertyAccessor *getter = NULL; 2576 ObjectPropertyAccessor *setter = NULL; 2577 2578 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2579 getter = property_get_uint32_ptr; 2580 } 2581 2582 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2583 setter = property_set_uint32_ptr; 2584 } 2585 2586 return object_class_property_add(klass, name, "uint32", 2587 getter, setter, NULL, (void *)v); 2588 } 2589 2590 ObjectProperty * 2591 object_property_add_uint64_ptr(Object *obj, const char *name, 2592 const uint64_t *v, 2593 ObjectPropertyFlags flags) 2594 { 2595 ObjectPropertyAccessor *getter = NULL; 2596 ObjectPropertyAccessor *setter = NULL; 2597 2598 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2599 getter = property_get_uint64_ptr; 2600 } 2601 2602 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2603 setter = property_set_uint64_ptr; 2604 } 2605 2606 return object_property_add(obj, name, "uint64", 2607 getter, setter, NULL, (void *)v); 2608 } 2609 2610 ObjectProperty * 2611 object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name, 2612 const uint64_t *v, 2613 ObjectPropertyFlags flags) 2614 { 2615 ObjectPropertyAccessor *getter = NULL; 2616 ObjectPropertyAccessor *setter = NULL; 2617 2618 if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { 2619 getter = property_get_uint64_ptr; 2620 } 2621 2622 if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { 2623 setter = property_set_uint64_ptr; 2624 } 2625 2626 return object_class_property_add(klass, name, "uint64", 2627 getter, setter, NULL, (void *)v); 2628 } 2629 2630 typedef struct { 2631 Object *target_obj; 2632 char *target_name; 2633 } AliasProperty; 2634 2635 static void property_get_alias(Object *obj, Visitor *v, const char *name, 2636 void *opaque, Error **errp) 2637 { 2638 AliasProperty *prop = opaque; 2639 2640 object_property_get(prop->target_obj, v, prop->target_name, errp); 2641 } 2642 2643 static void property_set_alias(Object *obj, Visitor *v, const char *name, 2644 void *opaque, Error **errp) 2645 { 2646 AliasProperty *prop = opaque; 2647 2648 object_property_set(prop->target_obj, v, prop->target_name, errp); 2649 } 2650 2651 static Object *property_resolve_alias(Object *obj, void *opaque, 2652 const char *part) 2653 { 2654 AliasProperty *prop = opaque; 2655 2656 return object_resolve_path_component(prop->target_obj, prop->target_name); 2657 } 2658 2659 static void property_release_alias(Object *obj, const char *name, void *opaque) 2660 { 2661 AliasProperty *prop = opaque; 2662 2663 g_free(prop->target_name); 2664 g_free(prop); 2665 } 2666 2667 ObjectProperty * 2668 object_property_add_alias(Object *obj, const char *name, 2669 Object *target_obj, const char *target_name) 2670 { 2671 AliasProperty *prop; 2672 ObjectProperty *op; 2673 ObjectProperty *target_prop; 2674 g_autofree char *prop_type = NULL; 2675 2676 target_prop = object_property_find(target_obj, target_name, 2677 &error_abort); 2678 2679 if (object_property_is_child(target_prop)) { 2680 prop_type = g_strdup_printf("link%s", 2681 target_prop->type + strlen("child")); 2682 } else { 2683 prop_type = g_strdup(target_prop->type); 2684 } 2685 2686 prop = g_malloc(sizeof(*prop)); 2687 prop->target_obj = target_obj; 2688 prop->target_name = g_strdup(target_name); 2689 2690 op = object_property_add(obj, name, prop_type, 2691 property_get_alias, 2692 property_set_alias, 2693 property_release_alias, 2694 prop); 2695 op->resolve = property_resolve_alias; 2696 if (target_prop->defval) { 2697 op->defval = qobject_ref(target_prop->defval); 2698 } 2699 2700 object_property_set_description(obj, op->name, 2701 target_prop->description); 2702 return op; 2703 } 2704 2705 void object_property_set_description(Object *obj, const char *name, 2706 const char *description) 2707 { 2708 ObjectProperty *op; 2709 2710 op = object_property_find(obj, name, &error_abort); 2711 g_free(op->description); 2712 op->description = g_strdup(description); 2713 } 2714 2715 void object_class_property_set_description(ObjectClass *klass, 2716 const char *name, 2717 const char *description) 2718 { 2719 ObjectProperty *op; 2720 2721 op = g_hash_table_lookup(klass->properties, name); 2722 g_free(op->description); 2723 op->description = g_strdup(description); 2724 } 2725 2726 static void object_class_init(ObjectClass *klass, void *data) 2727 { 2728 object_class_property_add_str(klass, "type", qdev_get_type, 2729 NULL); 2730 } 2731 2732 static void register_types(void) 2733 { 2734 static TypeInfo interface_info = { 2735 .name = TYPE_INTERFACE, 2736 .class_size = sizeof(InterfaceClass), 2737 .abstract = true, 2738 }; 2739 2740 static TypeInfo object_info = { 2741 .name = TYPE_OBJECT, 2742 .instance_size = sizeof(Object), 2743 .class_init = object_class_init, 2744 .abstract = true, 2745 }; 2746 2747 type_interface = type_register_internal(&interface_info); 2748 type_register_internal(&object_info); 2749 } 2750 2751 type_init(register_types) 2752