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