| 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 "qapi/error.h" |
| 15 | #include "qom/compat-properties.h" |
| 16 | #include "qom/object.h" |
| 17 | #include "qom/object_interfaces.h" |
| 18 | #include "qemu/cutils.h" |
| 19 | #include "qemu/memalign.h" |
| 20 | #include "qapi/visitor.h" |
| 21 | #include "qapi/string-input-visitor.h" |
| 22 | #include "qapi/string-output-visitor.h" |
| 23 | #include "qapi/qobject-input-visitor.h" |
| 24 | #include "qapi/forward-visitor.h" |
| 25 | #include "qapi/qapi-builtin-visit.h" |
| 26 | #include "qobject/qdict.h" |
| 27 | #include "qobject/qjson.h" |
| 28 | #include "qemu/id.h" |
| 29 | #include "qapi/qmp/qerror.h" |
| 30 | #include "trace.h" |
| 31 | |
| 32 | /* TODO: replace QObject with a simpler visitor to avoid a dependency |
| 33 | * of the QOM core on QObject? */ |
| 34 | #include "qom/qom-qobject.h" |
| 35 | #include "qobject/qbool.h" |
| 36 | #include "qobject/qlist.h" |
| 37 | #include "qobject/qnum.h" |
| 38 | #include "qobject/qstring.h" |
| 39 | #include "qemu/error-report.h" |
| 40 | |
| 41 | #define MAX_INTERFACES 32 |
| 42 | |
| 43 | typedef struct InterfaceImpl InterfaceImpl; |
| 44 | typedef struct TypeImpl TypeImpl; |
| 45 | |
| 46 | struct InterfaceImpl |
| 47 | { |
| 48 | const char *typename; |
| 49 | }; |
| 50 | |
| 51 | struct TypeImpl |
| 52 | { |
| 53 | const char *name; |
| 54 | |
| 55 | size_t class_size; |
| 56 | |
| 57 | size_t instance_size; |
| 58 | size_t instance_align; |
| 59 | |
| 60 | void (*class_init)(ObjectClass *klass, const void *data); |
| 61 | void (*class_base_init)(ObjectClass *klass, const void *data); |
| 62 | |
| 63 | const void *class_data; |
| 64 | |
| 65 | void (*instance_init)(Object *obj); |
| 66 | void (*instance_post_init)(Object *obj); |
| 67 | void (*instance_finalize)(Object *obj); |
| 68 | |
| 69 | bool abstract; |
| 70 | |
| 71 | const char *parent; |
| 72 | TypeImpl *parent_type; |
| 73 | |
| 74 | ObjectClass *class; |
| 75 | |
| 76 | int num_interfaces; |
| 77 | InterfaceImpl interfaces[MAX_INTERFACES]; |
| 78 | }; |
| 79 | |
| 80 | static Type type_interface; |
| 81 | |
| 82 | static GHashTable *type_table; |
| 83 | |
| 84 | static bool enumerating_types; |
| 85 | |
| 86 | static void type_table_add(TypeImpl *ti) |
| 87 | { |
| 88 | assert(!enumerating_types); |
| 89 | g_hash_table_insert(type_table, (void *)ti->name, ti); |
| 90 | } |
| 91 | |
| 92 | static TypeImpl *type_table_lookup(const char *name) |
| 93 | { |
| 94 | return g_hash_table_lookup(type_table, name); |
| 95 | } |
| 96 | |
| 97 | static TypeImpl *type_new(const TypeInfo *info) |
| 98 | { |
| 99 | TypeImpl *ti = g_malloc0(sizeof(*ti)); |
| 100 | int i; |
| 101 | |
| 102 | g_assert(info->name != NULL); |
| 103 | |
| 104 | if (type_table_lookup(info->name) != NULL) { |
| 105 | fprintf(stderr, "Registering `%s' which already exists\n", info->name); |
| 106 | abort(); |
| 107 | } |
| 108 | |
| 109 | ti->name = g_strdup(info->name); |
| 110 | ti->parent = g_strdup(info->parent); |
| 111 | |
| 112 | ti->class_size = info->class_size; |
| 113 | ti->instance_size = info->instance_size; |
| 114 | ti->instance_align = info->instance_align; |
| 115 | |
| 116 | ti->class_init = info->class_init; |
| 117 | ti->class_base_init = info->class_base_init; |
| 118 | ti->class_data = info->class_data; |
| 119 | |
| 120 | ti->instance_init = info->instance_init; |
| 121 | ti->instance_post_init = info->instance_post_init; |
| 122 | ti->instance_finalize = info->instance_finalize; |
| 123 | |
| 124 | ti->abstract = info->abstract; |
| 125 | |
| 126 | for (i = 0; info->interfaces && info->interfaces[i].type; i++) { |
| 127 | ti->interfaces[i].typename = g_strdup(info->interfaces[i].type); |
| 128 | } |
| 129 | ti->num_interfaces = i; |
| 130 | |
| 131 | return ti; |
| 132 | } |
| 133 | |
| 134 | static bool type_name_is_valid(const char *name) |
| 135 | { |
| 136 | const int slen = strlen(name); |
| 137 | int plen; |
| 138 | |
| 139 | g_assert(slen > 1); |
| 140 | |
| 141 | /* |
| 142 | * Ideally, the name should start with a letter - however, we've got |
| 143 | * too many names starting with a digit already, so allow digits here, |
| 144 | * too (except '0' which is not used yet) |
| 145 | */ |
| 146 | if (!g_ascii_isalnum(name[0]) || name[0] == '0') { |
| 147 | return false; |
| 148 | } |
| 149 | |
| 150 | plen = strspn(name, "abcdefghijklmnopqrstuvwxyz" |
| 151 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
| 152 | "0123456789-_."); |
| 153 | |
| 154 | return plen == slen; |
| 155 | } |
| 156 | |
| 157 | static TypeImpl *type_register_internal(const TypeInfo *info) |
| 158 | { |
| 159 | TypeImpl *ti; |
| 160 | |
| 161 | if (!type_name_is_valid(info->name)) { |
| 162 | fprintf(stderr, "Registering '%s' with illegal type name\n", info->name); |
| 163 | abort(); |
| 164 | } |
| 165 | |
| 166 | ti = type_new(info); |
| 167 | |
| 168 | type_table_add(ti); |
| 169 | return ti; |
| 170 | } |
| 171 | |
| 172 | TypeImpl *type_register_static(const TypeInfo *info) |
| 173 | { |
| 174 | assert(info->parent); |
| 175 | return type_register_internal(info); |
| 176 | } |
| 177 | |
| 178 | void type_register_static_array(const TypeInfo *infos, int nr_infos) |
| 179 | { |
| 180 | int i; |
| 181 | |
| 182 | for (i = 0; i < nr_infos; i++) { |
| 183 | type_register_static(&infos[i]); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | static TypeImpl *type_get_by_name_noload(const char *name) |
| 188 | { |
| 189 | if (name == NULL) { |
| 190 | return NULL; |
| 191 | } |
| 192 | |
| 193 | return type_table_lookup(name); |
| 194 | } |
| 195 | |
| 196 | static TypeImpl *type_get_or_load_by_name(const char *name, Error **errp) |
| 197 | { |
| 198 | TypeImpl *type = type_get_by_name_noload(name); |
| 199 | |
| 200 | #ifdef CONFIG_MODULES |
| 201 | if (!type) { |
| 202 | int rv = module_load_qom(name, errp); |
| 203 | if (rv > 0) { |
| 204 | type = type_get_by_name_noload(name); |
| 205 | } else { |
| 206 | error_prepend(errp, "could not load a module for type '%s'", name); |
| 207 | return NULL; |
| 208 | } |
| 209 | } |
| 210 | #endif |
| 211 | if (!type) { |
| 212 | error_setg(errp, "unknown type '%s'", name); |
| 213 | } |
| 214 | |
| 215 | return type; |
| 216 | } |
| 217 | |
| 218 | static TypeImpl *type_get_parent(TypeImpl *type) |
| 219 | { |
| 220 | if (!type->parent_type && type->parent) { |
| 221 | type->parent_type = type_get_by_name_noload(type->parent); |
| 222 | if (!type->parent_type) { |
| 223 | fprintf(stderr, "Type '%s' is missing its parent '%s'\n", |
| 224 | type->name, type->parent); |
| 225 | abort(); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | return type->parent_type; |
| 230 | } |
| 231 | |
| 232 | static bool type_has_parent(TypeImpl *type) |
| 233 | { |
| 234 | return (type->parent != NULL); |
| 235 | } |
| 236 | |
| 237 | static size_t type_class_get_size(TypeImpl *ti) |
| 238 | { |
| 239 | if (ti->class_size) { |
| 240 | return ti->class_size; |
| 241 | } |
| 242 | |
| 243 | if (type_has_parent(ti)) { |
| 244 | return type_class_get_size(type_get_parent(ti)); |
| 245 | } |
| 246 | |
| 247 | return sizeof(ObjectClass); |
| 248 | } |
| 249 | |
| 250 | static size_t type_object_get_size(TypeImpl *ti) |
| 251 | { |
| 252 | if (ti->instance_size) { |
| 253 | return ti->instance_size; |
| 254 | } |
| 255 | |
| 256 | if (type_has_parent(ti)) { |
| 257 | return type_object_get_size(type_get_parent(ti)); |
| 258 | } |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static size_t type_object_get_align(TypeImpl *ti) |
| 264 | { |
| 265 | if (ti->instance_align) { |
| 266 | return ti->instance_align; |
| 267 | } |
| 268 | |
| 269 | if (type_has_parent(ti)) { |
| 270 | return type_object_get_align(type_get_parent(ti)); |
| 271 | } |
| 272 | |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | static bool type_is_ancestor(TypeImpl *type, TypeImpl *target_type) |
| 277 | { |
| 278 | assert(target_type); |
| 279 | |
| 280 | /* Check if target_type is a direct ancestor of type */ |
| 281 | while (type) { |
| 282 | if (type == target_type) { |
| 283 | return true; |
| 284 | } |
| 285 | |
| 286 | type = type_get_parent(type); |
| 287 | } |
| 288 | |
| 289 | return false; |
| 290 | } |
| 291 | |
| 292 | static void type_initialize(TypeImpl *ti); |
| 293 | |
| 294 | static void type_initialize_interface(TypeImpl *ti, TypeImpl *interface_type, |
| 295 | TypeImpl *parent_type) |
| 296 | { |
| 297 | InterfaceClass *new_iface; |
| 298 | TypeInfo info = { }; |
| 299 | TypeImpl *iface_impl; |
| 300 | |
| 301 | info.parent = parent_type->name; |
| 302 | info.name = g_strdup_printf("%s::%s", ti->name, interface_type->name); |
| 303 | info.abstract = true; |
| 304 | |
| 305 | iface_impl = type_new(&info); |
| 306 | iface_impl->parent_type = parent_type; |
| 307 | type_initialize(iface_impl); |
| 308 | g_free((char *)info.name); |
| 309 | |
| 310 | new_iface = (InterfaceClass *)iface_impl->class; |
| 311 | new_iface->interface_type = interface_type; |
| 312 | |
| 313 | ti->class->interfaces = g_slist_append(ti->class->interfaces, new_iface); |
| 314 | } |
| 315 | |
| 316 | static void object_property_free(gpointer data) |
| 317 | { |
| 318 | ObjectProperty *prop = data; |
| 319 | |
| 320 | if (prop->defval) { |
| 321 | qobject_unref(prop->defval); |
| 322 | prop->defval = NULL; |
| 323 | } |
| 324 | g_free(prop->name); |
| 325 | g_free(prop->type); |
| 326 | g_free(prop->description); |
| 327 | g_free(prop); |
| 328 | } |
| 329 | |
| 330 | static void type_initialize(TypeImpl *ti) |
| 331 | { |
| 332 | TypeImpl *parent; |
| 333 | |
| 334 | if (ti->class) { |
| 335 | return; |
| 336 | } |
| 337 | |
| 338 | ti->class_size = type_class_get_size(ti); |
| 339 | ti->instance_size = type_object_get_size(ti); |
| 340 | ti->instance_align = type_object_get_align(ti); |
| 341 | /* Any type with zero instance_size is implicitly abstract. |
| 342 | * This means interface types are all abstract. |
| 343 | */ |
| 344 | if (ti->instance_size == 0) { |
| 345 | ti->abstract = true; |
| 346 | } |
| 347 | if (type_is_ancestor(ti, type_interface)) { |
| 348 | assert(ti->instance_size == 0); |
| 349 | assert(ti->abstract); |
| 350 | assert(!ti->instance_init); |
| 351 | assert(!ti->instance_post_init); |
| 352 | assert(!ti->instance_finalize); |
| 353 | assert(!ti->num_interfaces); |
| 354 | } |
| 355 | ti->class = g_malloc0(ti->class_size); |
| 356 | |
| 357 | parent = type_get_parent(ti); |
| 358 | if (parent) { |
| 359 | type_initialize(parent); |
| 360 | GSList *e; |
| 361 | int i; |
| 362 | |
| 363 | g_assert(parent->class_size <= ti->class_size); |
| 364 | g_assert(parent->instance_size <= ti->instance_size); |
| 365 | memcpy(ti->class, parent->class, parent->class_size); |
| 366 | ti->class->interfaces = NULL; |
| 367 | |
| 368 | for (e = parent->class->interfaces; e; e = e->next) { |
| 369 | InterfaceClass *iface = e->data; |
| 370 | ObjectClass *klass = OBJECT_CLASS(iface); |
| 371 | |
| 372 | type_initialize_interface(ti, iface->interface_type, klass->type); |
| 373 | } |
| 374 | |
| 375 | for (i = 0; i < ti->num_interfaces; i++) { |
| 376 | TypeImpl *t = type_get_by_name_noload(ti->interfaces[i].typename); |
| 377 | if (!t) { |
| 378 | error_report("missing interface '%s' for object '%s'", |
| 379 | ti->interfaces[i].typename, parent->name); |
| 380 | abort(); |
| 381 | } |
| 382 | for (e = ti->class->interfaces; e; e = e->next) { |
| 383 | TypeImpl *target_type = OBJECT_CLASS(e->data)->type; |
| 384 | |
| 385 | if (type_is_ancestor(target_type, t)) { |
| 386 | break; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | if (e) { |
| 391 | continue; |
| 392 | } |
| 393 | |
| 394 | type_initialize_interface(ti, t, t); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | ti->class->properties = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, |
| 399 | object_property_free); |
| 400 | |
| 401 | ti->class->type = ti; |
| 402 | |
| 403 | while (parent) { |
| 404 | if (parent->class_base_init) { |
| 405 | parent->class_base_init(ti->class, ti->class_data); |
| 406 | } |
| 407 | parent = type_get_parent(parent); |
| 408 | } |
| 409 | |
| 410 | if (ti->class_init) { |
| 411 | ti->class_init(ti->class, ti->class_data); |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | static void object_init_with_type(Object *obj, TypeImpl *ti) |
| 416 | { |
| 417 | if (type_has_parent(ti)) { |
| 418 | object_init_with_type(obj, type_get_parent(ti)); |
| 419 | } |
| 420 | |
| 421 | if (ti->instance_init) { |
| 422 | ti->instance_init(obj); |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | static void object_post_init_with_type(Object *obj, TypeImpl *ti) |
| 427 | { |
| 428 | if (type_has_parent(ti)) { |
| 429 | object_post_init_with_type(obj, type_get_parent(ti)); |
| 430 | } |
| 431 | |
| 432 | if (ti->instance_post_init) { |
| 433 | ti->instance_post_init(obj); |
| 434 | } |
| 435 | } |
| 436 | |
| 437 | bool object_apply_global_props(Object *obj, const GPtrArray *props, |
| 438 | Error **errp) |
| 439 | { |
| 440 | int i; |
| 441 | |
| 442 | if (!props) { |
| 443 | return true; |
| 444 | } |
| 445 | |
| 446 | for (i = 0; i < props->len; i++) { |
| 447 | GlobalProperty *p = g_ptr_array_index(props, i); |
| 448 | Error *err = NULL; |
| 449 | |
| 450 | if (object_dynamic_cast(obj, p->driver) == NULL) { |
| 451 | continue; |
| 452 | } |
| 453 | if (p->optional && !object_property_find(obj, p->property)) { |
| 454 | continue; |
| 455 | } |
| 456 | p->used = true; |
| 457 | if (!object_property_parse(obj, p->property, p->value, &err)) { |
| 458 | error_prepend(&err, "can't apply global %s.%s=%s: ", |
| 459 | p->driver, p->property, p->value); |
| 460 | /* |
| 461 | * If errp != NULL, propagate error and return. |
| 462 | * If errp == NULL, report a warning, but keep going |
| 463 | * with the remaining globals. |
| 464 | */ |
| 465 | if (errp) { |
| 466 | error_propagate(errp, err); |
| 467 | return false; |
| 468 | } else { |
| 469 | warn_report_err(err); |
| 470 | } |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | return true; |
| 475 | } |
| 476 | |
| 477 | static void object_class_property_init_all(Object *obj) |
| 478 | { |
| 479 | ObjectPropertyIterator iter; |
| 480 | ObjectProperty *prop; |
| 481 | |
| 482 | object_class_property_iter_init(&iter, object_get_class(obj)); |
| 483 | while ((prop = object_property_iter_next(&iter))) { |
| 484 | if (prop->init) { |
| 485 | prop->init(obj, prop); |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | static void object_initialize_with_type(Object *obj, size_t size, TypeImpl *type) |
| 491 | { |
| 492 | type_initialize(type); |
| 493 | |
| 494 | g_assert(type->instance_size >= sizeof(Object)); |
| 495 | g_assert(type->abstract == false); |
| 496 | g_assert(size >= type->instance_size); |
| 497 | |
| 498 | memset(obj, 0, type->instance_size); |
| 499 | obj->class = type->class; |
| 500 | object_ref(obj); |
| 501 | object_class_property_init_all(obj); |
| 502 | obj->properties = g_hash_table_new_full(g_str_hash, g_str_equal, |
| 503 | NULL, object_property_free); |
| 504 | object_init_with_type(obj, type); |
| 505 | object_post_init_with_type(obj, type); |
| 506 | } |
| 507 | |
| 508 | void object_initialize(void *data, size_t size, const char *typename) |
| 509 | { |
| 510 | TypeImpl *type = type_get_or_load_by_name(typename, &error_fatal); |
| 511 | |
| 512 | object_initialize_with_type(data, size, type); |
| 513 | } |
| 514 | |
| 515 | bool object_initialize_child_with_props(Object *parentobj, |
| 516 | const char *propname, |
| 517 | void *childobj, size_t size, |
| 518 | const char *type, |
| 519 | Error **errp, ...) |
| 520 | { |
| 521 | va_list vargs; |
| 522 | bool ok; |
| 523 | |
| 524 | va_start(vargs, errp); |
| 525 | ok = object_initialize_child_with_propsv(parentobj, propname, |
| 526 | childobj, size, type, errp, |
| 527 | vargs); |
| 528 | va_end(vargs); |
| 529 | return ok; |
| 530 | } |
| 531 | |
| 532 | bool object_initialize_child_with_propsv(Object *parentobj, |
| 533 | const char *propname, |
| 534 | void *childobj, size_t size, |
| 535 | const char *type, |
| 536 | Error **errp, va_list vargs) |
| 537 | { |
| 538 | bool ok = false; |
| 539 | Object *obj; |
| 540 | UserCreatable *uc; |
| 541 | |
| 542 | object_initialize(childobj, size, type); |
| 543 | obj = OBJECT(childobj); |
| 544 | |
| 545 | if (!object_set_propv(obj, vargs, errp)) { |
| 546 | goto out; |
| 547 | } |
| 548 | |
| 549 | object_property_add_child(parentobj, propname, obj); |
| 550 | |
| 551 | uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); |
| 552 | if (uc) { |
| 553 | if (!user_creatable_complete(uc, errp)) { |
| 554 | object_unparent(obj); |
| 555 | goto out; |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | ok = true; |
| 560 | |
| 561 | out: |
| 562 | /* |
| 563 | * We want @obj's reference to be 1 on success, 0 on failure. |
| 564 | * On success, it's 2: one taken by object_initialize(), and one |
| 565 | * by object_property_add_child(). |
| 566 | * On failure in object_initialize() or earlier, it's 1. |
| 567 | * On failure afterwards, it's also 1: object_unparent() releases |
| 568 | * the reference taken by object_property_add_child(). |
| 569 | */ |
| 570 | object_unref(obj); |
| 571 | return ok; |
| 572 | } |
| 573 | |
| 574 | void object_initialize_child_internal(Object *parent, |
| 575 | const char *propname, |
| 576 | void *child, size_t size, |
| 577 | const char *type) |
| 578 | { |
| 579 | object_initialize_child_with_props(parent, propname, child, size, type, |
| 580 | &error_abort, NULL); |
| 581 | } |
| 582 | |
| 583 | static inline bool object_property_is_child(ObjectProperty *prop) |
| 584 | { |
| 585 | return strstart(prop->type, "child<", NULL); |
| 586 | } |
| 587 | |
| 588 | static void object_property_del_all(Object *obj) |
| 589 | { |
| 590 | g_autoptr(GHashTable) done = g_hash_table_new(NULL, NULL); |
| 591 | ObjectProperty *prop; |
| 592 | ObjectPropertyIterator iter; |
| 593 | bool released; |
| 594 | |
| 595 | do { |
| 596 | released = false; |
| 597 | object_property_iter_init(&iter, obj); |
| 598 | while ((prop = object_property_iter_next(&iter)) != NULL) { |
| 599 | if (g_hash_table_add(done, prop)) { |
| 600 | trace_object_property_del(obj, obj->class->type->name, |
| 601 | prop->name, prop->opaque); |
| 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 | trace_object_property_del_child(obj, obj->class->type->name, |
| 621 | child, child->class->type->name); |
| 622 | g_hash_table_iter_init(&iter, obj->properties); |
| 623 | while (g_hash_table_iter_next(&iter, &key, &value)) { |
| 624 | prop = value; |
| 625 | if (object_property_is_child(prop) && prop->opaque == child) { |
| 626 | trace_object_property_del(obj, obj->class->type->name, |
| 627 | prop->name, prop->opaque); |
| 628 | if (prop->release) { |
| 629 | prop->release(obj, prop->name, prop->opaque); |
| 630 | prop->release = NULL; |
| 631 | } |
| 632 | break; |
| 633 | } |
| 634 | } |
| 635 | g_hash_table_iter_init(&iter, obj->properties); |
| 636 | while (g_hash_table_iter_next(&iter, &key, &value)) { |
| 637 | prop = value; |
| 638 | if (object_property_is_child(prop) && prop->opaque == child) { |
| 639 | g_hash_table_iter_remove(&iter); |
| 640 | break; |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | void object_unparent(Object *obj) |
| 646 | { |
| 647 | if (obj->parent) { |
| 648 | object_property_del_child(obj->parent, obj); |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | static void object_deinit(Object *obj, TypeImpl *type) |
| 653 | { |
| 654 | if (type->instance_finalize) { |
| 655 | type->instance_finalize(obj); |
| 656 | } |
| 657 | |
| 658 | if (type_has_parent(type)) { |
| 659 | object_deinit(obj, type_get_parent(type)); |
| 660 | } |
| 661 | } |
| 662 | |
| 663 | static void object_finalize(void *data) |
| 664 | { |
| 665 | Object *obj = data; |
| 666 | TypeImpl *ti = obj->class->type; |
| 667 | trace_object_finalize(obj, obj->class->type->name); |
| 668 | object_property_del_all(obj); |
| 669 | object_deinit(obj, ti); |
| 670 | |
| 671 | g_assert(obj->ref == 0); |
| 672 | g_assert(obj->parent == NULL); |
| 673 | if (obj->free) { |
| 674 | obj->free(obj); |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | static Object *object_new_with_type(Type type) |
| 679 | { |
| 680 | Object *obj; |
| 681 | size_t size, align; |
| 682 | void (*obj_free)(void *); |
| 683 | |
| 684 | g_assert(type != NULL); |
| 685 | type_initialize(type); |
| 686 | |
| 687 | size = type->instance_size; |
| 688 | align = type->instance_align; |
| 689 | |
| 690 | /* |
| 691 | * Do not use qemu_memalign unless required. Depending on the |
| 692 | * implementation, extra alignment implies extra overhead. |
| 693 | */ |
| 694 | if (likely(align <= __alignof__(max_align_t))) { |
| 695 | obj = g_malloc(size); |
| 696 | obj_free = g_free; |
| 697 | } else { |
| 698 | obj = qemu_memalign(align, size); |
| 699 | obj_free = qemu_vfree; |
| 700 | } |
| 701 | |
| 702 | object_initialize_with_type(obj, size, type); |
| 703 | obj->free = obj_free; |
| 704 | |
| 705 | trace_object_new(obj, obj->class->type->name); |
| 706 | return obj; |
| 707 | } |
| 708 | |
| 709 | Object *object_new_with_class(ObjectClass *klass) |
| 710 | { |
| 711 | return object_new_with_type(klass->type); |
| 712 | } |
| 713 | |
| 714 | Object *object_new(const char *typename) |
| 715 | { |
| 716 | TypeImpl *ti = type_get_or_load_by_name(typename, &error_fatal); |
| 717 | |
| 718 | return object_new_with_type(ti); |
| 719 | } |
| 720 | |
| 721 | |
| 722 | Object *object_new_with_props(const char *typename, |
| 723 | Object *parent, |
| 724 | const char *id, |
| 725 | Error **errp, |
| 726 | ...) |
| 727 | { |
| 728 | va_list vargs; |
| 729 | Object *obj; |
| 730 | |
| 731 | assert(parent != NULL); |
| 732 | assert(id != NULL); |
| 733 | va_start(vargs, errp); |
| 734 | obj = object_new_with_propv(typename, parent, id, vargs, errp); |
| 735 | va_end(vargs); |
| 736 | |
| 737 | return obj; |
| 738 | } |
| 739 | |
| 740 | |
| 741 | static Object * |
| 742 | object_new_with_props_helper(const char *typename, |
| 743 | Object *parent, |
| 744 | const char *id, |
| 745 | void *props, |
| 746 | bool (set_props)(Object *obj, void *props, |
| 747 | Error **errp), |
| 748 | Error **errp) |
| 749 | { |
| 750 | ERRP_GUARD(); |
| 751 | Object *obj; |
| 752 | ObjectClass *klass; |
| 753 | UserCreatable *uc; |
| 754 | |
| 755 | assert((id != NULL && parent != NULL) || |
| 756 | (id == NULL && parent == NULL)); |
| 757 | |
| 758 | if (id != NULL && !id_wellformed(id)) { |
| 759 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); |
| 760 | error_append_hint(errp, "Identifiers consist of letters, digits, " |
| 761 | "'-', '.', '_', starting with a letter.\n"); |
| 762 | return NULL; |
| 763 | } |
| 764 | |
| 765 | klass = module_object_class_by_name(typename); |
| 766 | if (!klass) { |
| 767 | error_setg(errp, "invalid object type: %s", typename); |
| 768 | return NULL; |
| 769 | } |
| 770 | |
| 771 | if (object_class_is_abstract(klass)) { |
| 772 | error_setg(errp, "object type '%s' is abstract", typename); |
| 773 | return NULL; |
| 774 | } |
| 775 | obj = object_new_with_type(klass->type); |
| 776 | |
| 777 | if (!set_props(obj, props, errp)) { |
| 778 | goto error; |
| 779 | } |
| 780 | |
| 781 | if (id != NULL) { |
| 782 | object_property_try_add_child(parent, id, obj, errp); |
| 783 | if (*errp) { |
| 784 | goto error; |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | uc = (UserCreatable *)object_dynamic_cast(obj, TYPE_USER_CREATABLE); |
| 789 | if (uc) { |
| 790 | if (!user_creatable_complete(uc, errp)) { |
| 791 | if (id != NULL) { |
| 792 | object_unparent(obj); |
| 793 | } |
| 794 | goto error; |
| 795 | } |
| 796 | } |
| 797 | |
| 798 | return obj; |
| 799 | |
| 800 | error: |
| 801 | object_unref(obj); |
| 802 | return NULL; |
| 803 | } |
| 804 | |
| 805 | struct ObjectNewVargsData { |
| 806 | va_list vargs; |
| 807 | }; |
| 808 | |
| 809 | static bool object_new_with_propv_setter(Object *obj, |
| 810 | void *props, |
| 811 | Error **errp) |
| 812 | { |
| 813 | struct ObjectNewVargsData *data = props; |
| 814 | return object_set_propv(obj, data->vargs, errp); |
| 815 | } |
| 816 | |
| 817 | Object *object_new_with_propv(const char *typename, |
| 818 | Object *parent, |
| 819 | const char *id, |
| 820 | va_list vargs, |
| 821 | Error **errp) |
| 822 | { |
| 823 | Object *obj; |
| 824 | struct ObjectNewVargsData data; |
| 825 | assert(parent != NULL); |
| 826 | assert(id != NULL); |
| 827 | va_copy(data.vargs, vargs); |
| 828 | obj = object_new_with_props_helper(typename, |
| 829 | parent, |
| 830 | id, |
| 831 | &data, |
| 832 | object_new_with_propv_setter, |
| 833 | errp); |
| 834 | va_end(data.vargs); |
| 835 | if (obj) { |
| 836 | object_unref(obj); |
| 837 | } |
| 838 | return obj; |
| 839 | } |
| 840 | |
| 841 | struct ObjectNewQDictData { |
| 842 | const QDict *props; |
| 843 | Visitor *v; |
| 844 | }; |
| 845 | |
| 846 | static bool object_new_with_qdict_setter(Object *obj, |
| 847 | void *props, |
| 848 | Error **errp) |
| 849 | { |
| 850 | struct ObjectNewQDictData *data = props; |
| 851 | return object_set_props_from_qdict(obj, data->props, data->v, errp); |
| 852 | } |
| 853 | |
| 854 | Object *object_new_with_props_from_qdict(const char *typename, |
| 855 | Object *parent, |
| 856 | const char *id, |
| 857 | const QDict *props, |
| 858 | Visitor *v, |
| 859 | Error **errp) |
| 860 | { |
| 861 | struct ObjectNewQDictData data = { props, v }; |
| 862 | Object *obj; |
| 863 | assert(parent != NULL); |
| 864 | assert(id != NULL); |
| 865 | obj = object_new_with_props_helper(typename, |
| 866 | parent, |
| 867 | id, |
| 868 | &data, |
| 869 | object_new_with_qdict_setter, |
| 870 | errp); |
| 871 | if (obj) { |
| 872 | object_unref(obj); |
| 873 | } |
| 874 | return obj; |
| 875 | } |
| 876 | |
| 877 | Object *object_new_with_props_parentless(const char *typename, |
| 878 | Error **errp, |
| 879 | ...) |
| 880 | { |
| 881 | va_list vargs; |
| 882 | Object *obj; |
| 883 | |
| 884 | va_start(vargs, errp); |
| 885 | obj = object_new_with_propv_parentless(typename, vargs, errp); |
| 886 | va_end(vargs); |
| 887 | |
| 888 | return obj; |
| 889 | } |
| 890 | |
| 891 | Object *object_new_with_propv_parentless(const char *typename, |
| 892 | va_list vargs, |
| 893 | Error **errp) |
| 894 | { |
| 895 | Object *ret; |
| 896 | struct ObjectNewVargsData data; |
| 897 | va_copy(data.vargs, vargs); |
| 898 | ret = object_new_with_props_helper(typename, NULL, NULL, &data, |
| 899 | object_new_with_propv_setter, errp); |
| 900 | va_end(data.vargs); |
| 901 | return ret; |
| 902 | } |
| 903 | |
| 904 | Object *object_new_with_props_from_qdict_parentless(const char *typename, |
| 905 | const QDict *props, |
| 906 | Visitor *v, |
| 907 | Error **errp) |
| 908 | { |
| 909 | struct ObjectNewQDictData data = { props, v }; |
| 910 | return object_new_with_props_helper(typename, NULL, NULL, &data, |
| 911 | object_new_with_qdict_setter, errp); |
| 912 | } |
| 913 | |
| 914 | bool object_set_props(Object *obj, |
| 915 | Error **errp, |
| 916 | ...) |
| 917 | { |
| 918 | va_list vargs; |
| 919 | bool ret; |
| 920 | |
| 921 | va_start(vargs, errp); |
| 922 | ret = object_set_propv(obj, vargs, errp); |
| 923 | va_end(vargs); |
| 924 | |
| 925 | return ret; |
| 926 | } |
| 927 | |
| 928 | |
| 929 | bool object_set_propv(Object *obj, |
| 930 | va_list vargs, |
| 931 | Error **errp) |
| 932 | { |
| 933 | const char *propname; |
| 934 | |
| 935 | propname = va_arg(vargs, char *); |
| 936 | while (propname != NULL) { |
| 937 | const char *value = va_arg(vargs, char *); |
| 938 | |
| 939 | g_assert(value != NULL); |
| 940 | if (!object_property_parse(obj, propname, value, errp)) { |
| 941 | return false; |
| 942 | } |
| 943 | propname = va_arg(vargs, char *); |
| 944 | } |
| 945 | |
| 946 | return true; |
| 947 | } |
| 948 | |
| 949 | bool object_set_props_from_qdict(Object *obj, const QDict *qdict, |
| 950 | Visitor *v, Error **errp) |
| 951 | { |
| 952 | ERRP_GUARD(); |
| 953 | const QDictEntry *e; |
| 954 | |
| 955 | if (!visit_start_struct(v, NULL, NULL, 0, errp)) { |
| 956 | return false; |
| 957 | } |
| 958 | for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) { |
| 959 | if (!object_property_set(obj, e->key, v, errp)) { |
| 960 | goto out; |
| 961 | } |
| 962 | } |
| 963 | visit_check_struct(v, errp); |
| 964 | out: |
| 965 | visit_end_struct(v, NULL); |
| 966 | |
| 967 | return *errp == NULL; |
| 968 | } |
| 969 | |
| 970 | bool object_set_props_from_keyval(Object *obj, const QDict *qdict, |
| 971 | bool from_json, Error **errp) |
| 972 | { |
| 973 | bool ret; |
| 974 | Visitor *v; |
| 975 | if (from_json) { |
| 976 | v = qobject_input_visitor_new(QOBJECT(qdict)); |
| 977 | } else { |
| 978 | v = qobject_input_visitor_new_keyval(QOBJECT(qdict)); |
| 979 | } |
| 980 | ret = object_set_props_from_qdict(obj, qdict, v, errp); |
| 981 | visit_free(v); |
| 982 | return ret; |
| 983 | } |
| 984 | |
| 985 | Object *object_dynamic_cast(Object *obj, const char *typename) |
| 986 | { |
| 987 | if (obj && object_class_dynamic_cast(object_get_class(obj), typename)) { |
| 988 | return obj; |
| 989 | } |
| 990 | |
| 991 | return NULL; |
| 992 | } |
| 993 | |
| 994 | Object *object_dynamic_cast_assert(Object *obj, const char *typename, |
| 995 | const char *file, int line, const char *func) |
| 996 | { |
| 997 | trace_object_dynamic_cast_assert( |
| 998 | obj, obj ? obj->class->type->name : "(null)", |
| 999 | typename, file, line, func); |
| 1000 | |
| 1001 | #ifdef CONFIG_QOM_CAST_DEBUG |
| 1002 | int i; |
| 1003 | Object *inst; |
| 1004 | |
| 1005 | for (i = 0; obj && i < OBJECT_CLASS_CAST_CACHE; i++) { |
| 1006 | if (qatomic_read(&obj->class->object_cast_cache[i]) == typename) { |
| 1007 | goto out; |
| 1008 | } |
| 1009 | } |
| 1010 | |
| 1011 | inst = object_dynamic_cast(obj, typename); |
| 1012 | |
| 1013 | if (!inst && obj) { |
| 1014 | fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n", |
| 1015 | file, line, func, obj, typename); |
| 1016 | abort(); |
| 1017 | } |
| 1018 | |
| 1019 | assert(obj == inst); |
| 1020 | |
| 1021 | if (obj && obj == inst) { |
| 1022 | for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { |
| 1023 | qatomic_set(&obj->class->object_cast_cache[i - 1], |
| 1024 | qatomic_read(&obj->class->object_cast_cache[i])); |
| 1025 | } |
| 1026 | qatomic_set(&obj->class->object_cast_cache[i - 1], typename); |
| 1027 | } |
| 1028 | |
| 1029 | out: |
| 1030 | #endif |
| 1031 | return obj; |
| 1032 | } |
| 1033 | |
| 1034 | ObjectClass *object_class_dynamic_cast(ObjectClass *class, |
| 1035 | const char *typename) |
| 1036 | { |
| 1037 | ObjectClass *ret = NULL; |
| 1038 | TypeImpl *target_type; |
| 1039 | TypeImpl *type; |
| 1040 | |
| 1041 | if (!class) { |
| 1042 | return NULL; |
| 1043 | } |
| 1044 | |
| 1045 | /* A simple fast path that can trigger a lot for leaf classes. */ |
| 1046 | type = class->type; |
| 1047 | if (type->name == typename) { |
| 1048 | return class; |
| 1049 | } |
| 1050 | |
| 1051 | target_type = type_get_by_name_noload(typename); |
| 1052 | if (!target_type) { |
| 1053 | /* target class type unknown, so fail the cast */ |
| 1054 | return NULL; |
| 1055 | } |
| 1056 | |
| 1057 | if (type->class->interfaces && |
| 1058 | type_is_ancestor(target_type, type_interface)) { |
| 1059 | int found = 0; |
| 1060 | GSList *i; |
| 1061 | |
| 1062 | for (i = class->interfaces; i; i = i->next) { |
| 1063 | ObjectClass *target_class = i->data; |
| 1064 | |
| 1065 | if (type_is_ancestor(target_class->type, target_type)) { |
| 1066 | ret = target_class; |
| 1067 | found++; |
| 1068 | } |
| 1069 | } |
| 1070 | |
| 1071 | /* The match was ambiguous, don't allow a cast */ |
| 1072 | if (found > 1) { |
| 1073 | ret = NULL; |
| 1074 | } |
| 1075 | } else if (type_is_ancestor(type, target_type)) { |
| 1076 | ret = class; |
| 1077 | } |
| 1078 | |
| 1079 | return ret; |
| 1080 | } |
| 1081 | |
| 1082 | ObjectClass *object_class_dynamic_cast_assert(ObjectClass *class, |
| 1083 | const char *typename, |
| 1084 | const char *file, int line, |
| 1085 | const char *func) |
| 1086 | { |
| 1087 | ObjectClass *ret; |
| 1088 | |
| 1089 | trace_object_class_dynamic_cast_assert( |
| 1090 | class ? class->type->name : "(null)", |
| 1091 | typename, file, line, func); |
| 1092 | |
| 1093 | #ifdef CONFIG_QOM_CAST_DEBUG |
| 1094 | int i; |
| 1095 | |
| 1096 | for (i = 0; class && i < OBJECT_CLASS_CAST_CACHE; i++) { |
| 1097 | if (qatomic_read(&class->class_cast_cache[i]) == typename) { |
| 1098 | ret = class; |
| 1099 | goto out; |
| 1100 | } |
| 1101 | } |
| 1102 | #else |
| 1103 | if (!class || !class->interfaces) { |
| 1104 | return class; |
| 1105 | } |
| 1106 | #endif |
| 1107 | |
| 1108 | ret = object_class_dynamic_cast(class, typename); |
| 1109 | if (!ret && class) { |
| 1110 | fprintf(stderr, "%s:%d:%s: Object %p is not an instance of type %s\n", |
| 1111 | file, line, func, class, typename); |
| 1112 | abort(); |
| 1113 | } |
| 1114 | |
| 1115 | #ifdef CONFIG_QOM_CAST_DEBUG |
| 1116 | if (class && ret == class) { |
| 1117 | for (i = 1; i < OBJECT_CLASS_CAST_CACHE; i++) { |
| 1118 | qatomic_set(&class->class_cast_cache[i - 1], |
| 1119 | qatomic_read(&class->class_cast_cache[i])); |
| 1120 | } |
| 1121 | qatomic_set(&class->class_cast_cache[i - 1], typename); |
| 1122 | } |
| 1123 | out: |
| 1124 | #endif |
| 1125 | return ret; |
| 1126 | } |
| 1127 | |
| 1128 | const char *object_get_typename(const Object *obj) |
| 1129 | { |
| 1130 | return obj->class->type->name; |
| 1131 | } |
| 1132 | |
| 1133 | ObjectClass *object_get_class(Object *obj) |
| 1134 | { |
| 1135 | return obj->class; |
| 1136 | } |
| 1137 | |
| 1138 | bool object_class_is_abstract(ObjectClass *klass) |
| 1139 | { |
| 1140 | return klass->type->abstract; |
| 1141 | } |
| 1142 | |
| 1143 | const char *object_class_get_name(ObjectClass *klass) |
| 1144 | { |
| 1145 | return klass->type->name; |
| 1146 | } |
| 1147 | |
| 1148 | ObjectClass *object_class_by_name(const char *typename) |
| 1149 | { |
| 1150 | TypeImpl *type = type_get_by_name_noload(typename); |
| 1151 | |
| 1152 | if (!type) { |
| 1153 | return NULL; |
| 1154 | } |
| 1155 | |
| 1156 | type_initialize(type); |
| 1157 | |
| 1158 | return type->class; |
| 1159 | } |
| 1160 | |
| 1161 | ObjectClass *module_object_class_by_name(const char *typename) |
| 1162 | { |
| 1163 | TypeImpl *type = type_get_or_load_by_name(typename, NULL); |
| 1164 | |
| 1165 | if (!type) { |
| 1166 | return NULL; |
| 1167 | } |
| 1168 | |
| 1169 | type_initialize(type); |
| 1170 | |
| 1171 | return type->class; |
| 1172 | } |
| 1173 | |
| 1174 | ObjectClass *object_class_get_parent(ObjectClass *class) |
| 1175 | { |
| 1176 | TypeImpl *type = type_get_parent(class->type); |
| 1177 | |
| 1178 | if (!type) { |
| 1179 | return NULL; |
| 1180 | } |
| 1181 | |
| 1182 | type_initialize(type); |
| 1183 | |
| 1184 | return type->class; |
| 1185 | } |
| 1186 | |
| 1187 | typedef struct OCFData |
| 1188 | { |
| 1189 | void (*fn)(ObjectClass *klass, void *opaque); |
| 1190 | const char *implements_type; |
| 1191 | bool include_abstract; |
| 1192 | void *opaque; |
| 1193 | } OCFData; |
| 1194 | |
| 1195 | static void object_class_foreach_tramp(gpointer key, gpointer value, |
| 1196 | gpointer opaque) |
| 1197 | { |
| 1198 | OCFData *data = opaque; |
| 1199 | TypeImpl *type = value; |
| 1200 | ObjectClass *k; |
| 1201 | |
| 1202 | type_initialize(type); |
| 1203 | k = type->class; |
| 1204 | |
| 1205 | if (!data->include_abstract && type->abstract) { |
| 1206 | return; |
| 1207 | } |
| 1208 | |
| 1209 | if (data->implements_type && |
| 1210 | !object_class_dynamic_cast(k, data->implements_type)) { |
| 1211 | return; |
| 1212 | } |
| 1213 | |
| 1214 | data->fn(k, data->opaque); |
| 1215 | } |
| 1216 | |
| 1217 | void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), |
| 1218 | const char *implements_type, bool include_abstract, |
| 1219 | void *opaque) |
| 1220 | { |
| 1221 | OCFData data = { fn, implements_type, include_abstract, opaque }; |
| 1222 | |
| 1223 | enumerating_types = true; |
| 1224 | g_hash_table_foreach(type_table, object_class_foreach_tramp, &data); |
| 1225 | enumerating_types = false; |
| 1226 | } |
| 1227 | |
| 1228 | static int do_object_child_foreach(Object *obj, |
| 1229 | int (*fn)(Object *child, void *opaque), |
| 1230 | void *opaque, bool recurse) |
| 1231 | { |
| 1232 | GHashTableIter iter; |
| 1233 | ObjectProperty *prop; |
| 1234 | int ret = 0; |
| 1235 | |
| 1236 | g_hash_table_iter_init(&iter, obj->properties); |
| 1237 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
| 1238 | if (object_property_is_child(prop)) { |
| 1239 | Object *child = prop->opaque; |
| 1240 | |
| 1241 | ret = fn(child, opaque); |
| 1242 | if (ret != 0) { |
| 1243 | break; |
| 1244 | } |
| 1245 | if (recurse) { |
| 1246 | ret = do_object_child_foreach(child, fn, opaque, true); |
| 1247 | if (ret != 0) { |
| 1248 | break; |
| 1249 | } |
| 1250 | } |
| 1251 | } |
| 1252 | } |
| 1253 | return ret; |
| 1254 | } |
| 1255 | |
| 1256 | int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque), |
| 1257 | void *opaque) |
| 1258 | { |
| 1259 | return do_object_child_foreach(obj, fn, opaque, false); |
| 1260 | } |
| 1261 | |
| 1262 | int object_child_foreach_recursive(Object *obj, |
| 1263 | int (*fn)(Object *child, void *opaque), |
| 1264 | void *opaque) |
| 1265 | { |
| 1266 | return do_object_child_foreach(obj, fn, opaque, true); |
| 1267 | } |
| 1268 | |
| 1269 | static void object_class_get_list_tramp(ObjectClass *klass, void *opaque) |
| 1270 | { |
| 1271 | GSList **list = opaque; |
| 1272 | |
| 1273 | *list = g_slist_prepend(*list, klass); |
| 1274 | } |
| 1275 | |
| 1276 | GSList *object_class_get_list(const char *implements_type, |
| 1277 | bool include_abstract) |
| 1278 | { |
| 1279 | GSList *list = NULL; |
| 1280 | |
| 1281 | object_class_foreach(object_class_get_list_tramp, |
| 1282 | implements_type, include_abstract, &list); |
| 1283 | return list; |
| 1284 | } |
| 1285 | |
| 1286 | static gint object_class_cmp(gconstpointer a, gconstpointer b, gpointer d) |
| 1287 | { |
| 1288 | return g_ascii_strcasecmp(object_class_get_name((ObjectClass *)a), |
| 1289 | object_class_get_name((ObjectClass *)b)); |
| 1290 | } |
| 1291 | |
| 1292 | GSList *object_class_get_list_sorted(const char *implements_type, |
| 1293 | bool include_abstract) |
| 1294 | { |
| 1295 | return g_slist_sort_with_data( |
| 1296 | object_class_get_list(implements_type, include_abstract), |
| 1297 | object_class_cmp, NULL); |
| 1298 | } |
| 1299 | |
| 1300 | Object *object_ref(void *objptr) |
| 1301 | { |
| 1302 | Object *obj = OBJECT(objptr); |
| 1303 | uint32_t ref; |
| 1304 | |
| 1305 | if (!obj) { |
| 1306 | return NULL; |
| 1307 | } |
| 1308 | ref = qatomic_fetch_inc(&obj->ref); |
| 1309 | /* Assert waaay before the integer overflows */ |
| 1310 | g_assert(ref < INT_MAX); |
| 1311 | return obj; |
| 1312 | } |
| 1313 | |
| 1314 | void object_unref(void *objptr) |
| 1315 | { |
| 1316 | Object *obj = OBJECT(objptr); |
| 1317 | if (!obj) { |
| 1318 | return; |
| 1319 | } |
| 1320 | g_assert(obj->ref > 0); |
| 1321 | |
| 1322 | /* parent always holds a reference to its children */ |
| 1323 | if (qatomic_fetch_dec(&obj->ref) == 1) { |
| 1324 | object_finalize(obj); |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | ObjectProperty * |
| 1329 | object_property_try_add(Object *obj, const char *name, const char *type, |
| 1330 | ObjectPropertyAccessor *get, |
| 1331 | ObjectPropertyAccessor *set, |
| 1332 | ObjectPropertyRelease *release, |
| 1333 | void *opaque, Error **errp) |
| 1334 | { |
| 1335 | ObjectProperty *prop; |
| 1336 | size_t name_len = strlen(name); |
| 1337 | |
| 1338 | if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) { |
| 1339 | int i; |
| 1340 | ObjectProperty *ret = NULL; |
| 1341 | char *name_no_array = g_strdup(name); |
| 1342 | |
| 1343 | name_no_array[name_len - 3] = '\0'; |
| 1344 | for (i = 0; i < INT16_MAX; ++i) { |
| 1345 | char *full_name = g_strdup_printf("%s[%d]", name_no_array, i); |
| 1346 | |
| 1347 | ret = object_property_try_add(obj, full_name, type, get, set, |
| 1348 | release, opaque, NULL); |
| 1349 | g_free(full_name); |
| 1350 | if (ret) { |
| 1351 | break; |
| 1352 | } |
| 1353 | } |
| 1354 | g_free(name_no_array); |
| 1355 | assert(ret); |
| 1356 | return ret; |
| 1357 | } |
| 1358 | |
| 1359 | if (object_property_find(obj, name) != NULL) { |
| 1360 | error_setg(errp, "attempt to add duplicate property '%s' to object (type '%s')", |
| 1361 | name, object_get_typename(obj)); |
| 1362 | return NULL; |
| 1363 | } |
| 1364 | |
| 1365 | prop = g_malloc0(sizeof(*prop)); |
| 1366 | |
| 1367 | prop->name = g_strdup(name); |
| 1368 | prop->type = g_strdup(type); |
| 1369 | |
| 1370 | prop->get = get; |
| 1371 | prop->set = set; |
| 1372 | prop->release = release; |
| 1373 | prop->opaque = opaque; |
| 1374 | |
| 1375 | trace_object_property_add(obj, obj->class->type->name, |
| 1376 | prop->name, prop->opaque); |
| 1377 | g_hash_table_insert(obj->properties, prop->name, prop); |
| 1378 | return prop; |
| 1379 | } |
| 1380 | |
| 1381 | ObjectProperty * |
| 1382 | object_property_add(Object *obj, const char *name, const char *type, |
| 1383 | ObjectPropertyAccessor *get, |
| 1384 | ObjectPropertyAccessor *set, |
| 1385 | ObjectPropertyRelease *release, |
| 1386 | void *opaque) |
| 1387 | { |
| 1388 | return object_property_try_add(obj, name, type, get, set, release, |
| 1389 | opaque, &error_abort); |
| 1390 | } |
| 1391 | |
| 1392 | ObjectProperty * |
| 1393 | object_class_property_add(ObjectClass *klass, |
| 1394 | const char *name, |
| 1395 | const char *type, |
| 1396 | ObjectPropertyAccessor *get, |
| 1397 | ObjectPropertyAccessor *set, |
| 1398 | ObjectPropertyRelease *release, |
| 1399 | void *opaque) |
| 1400 | { |
| 1401 | ObjectProperty *prop; |
| 1402 | |
| 1403 | assert(!object_class_property_find(klass, name)); |
| 1404 | |
| 1405 | prop = g_malloc0(sizeof(*prop)); |
| 1406 | |
| 1407 | prop->name = g_strdup(name); |
| 1408 | prop->type = g_strdup(type); |
| 1409 | |
| 1410 | prop->get = get; |
| 1411 | prop->set = set; |
| 1412 | prop->release = release; |
| 1413 | prop->opaque = opaque; |
| 1414 | |
| 1415 | trace_object_class_property_add(klass->type->name, prop->name, |
| 1416 | prop->opaque); |
| 1417 | g_hash_table_insert(klass->properties, prop->name, prop); |
| 1418 | |
| 1419 | return prop; |
| 1420 | } |
| 1421 | |
| 1422 | ObjectProperty *object_property_find(Object *obj, const char *name) |
| 1423 | { |
| 1424 | ObjectProperty *prop; |
| 1425 | ObjectClass *klass = object_get_class(obj); |
| 1426 | |
| 1427 | prop = object_class_property_find(klass, name); |
| 1428 | if (prop) { |
| 1429 | return prop; |
| 1430 | } |
| 1431 | |
| 1432 | return g_hash_table_lookup(obj->properties, name); |
| 1433 | } |
| 1434 | |
| 1435 | ObjectProperty *object_property_find_err(Object *obj, const char *name, |
| 1436 | Error **errp) |
| 1437 | { |
| 1438 | ObjectProperty *prop = object_property_find(obj, name); |
| 1439 | if (!prop) { |
| 1440 | error_setg(errp, "Property '%s.%s' not found", |
| 1441 | object_get_typename(obj), name); |
| 1442 | } |
| 1443 | return prop; |
| 1444 | } |
| 1445 | |
| 1446 | void object_property_iter_init(ObjectPropertyIterator *iter, |
| 1447 | Object *obj) |
| 1448 | { |
| 1449 | g_hash_table_iter_init(&iter->iter, obj->properties); |
| 1450 | iter->nextclass = object_get_class(obj); |
| 1451 | } |
| 1452 | |
| 1453 | ObjectProperty *object_property_iter_next(ObjectPropertyIterator *iter) |
| 1454 | { |
| 1455 | gpointer key, val; |
| 1456 | while (!g_hash_table_iter_next(&iter->iter, &key, &val)) { |
| 1457 | if (!iter->nextclass) { |
| 1458 | return NULL; |
| 1459 | } |
| 1460 | g_hash_table_iter_init(&iter->iter, iter->nextclass->properties); |
| 1461 | iter->nextclass = object_class_get_parent(iter->nextclass); |
| 1462 | } |
| 1463 | return val; |
| 1464 | } |
| 1465 | |
| 1466 | void object_class_property_iter_init(ObjectPropertyIterator *iter, |
| 1467 | ObjectClass *klass) |
| 1468 | { |
| 1469 | g_hash_table_iter_init(&iter->iter, klass->properties); |
| 1470 | iter->nextclass = object_class_get_parent(klass); |
| 1471 | } |
| 1472 | |
| 1473 | ObjectProperty *object_class_property_find(ObjectClass *klass, const char *name) |
| 1474 | { |
| 1475 | ObjectClass *parent_klass; |
| 1476 | |
| 1477 | parent_klass = object_class_get_parent(klass); |
| 1478 | if (parent_klass) { |
| 1479 | ObjectProperty *prop = |
| 1480 | object_class_property_find(parent_klass, name); |
| 1481 | if (prop) { |
| 1482 | return prop; |
| 1483 | } |
| 1484 | } |
| 1485 | |
| 1486 | return g_hash_table_lookup(klass->properties, name); |
| 1487 | } |
| 1488 | |
| 1489 | ObjectProperty *object_class_property_find_err(ObjectClass *klass, |
| 1490 | const char *name, |
| 1491 | Error **errp) |
| 1492 | { |
| 1493 | ObjectProperty *prop = object_class_property_find(klass, name); |
| 1494 | if (!prop) { |
| 1495 | error_setg(errp, "Property '.%s' not found", name); |
| 1496 | } |
| 1497 | return prop; |
| 1498 | } |
| 1499 | |
| 1500 | |
| 1501 | void object_property_del(Object *obj, const char *name) |
| 1502 | { |
| 1503 | ObjectProperty *prop = g_hash_table_lookup(obj->properties, name); |
| 1504 | |
| 1505 | trace_object_property_del(obj, obj->class->type->name, prop->name, |
| 1506 | prop->opaque); |
| 1507 | if (prop->release) { |
| 1508 | prop->release(obj, name, prop->opaque); |
| 1509 | } |
| 1510 | g_hash_table_remove(obj->properties, name); |
| 1511 | } |
| 1512 | |
| 1513 | bool object_property_get(Object *obj, const char *name, Visitor *v, |
| 1514 | Error **errp) |
| 1515 | { |
| 1516 | Error *err = NULL; |
| 1517 | ObjectProperty *prop = object_property_find_err(obj, name, errp); |
| 1518 | |
| 1519 | if (prop == NULL) { |
| 1520 | return false; |
| 1521 | } |
| 1522 | |
| 1523 | if (!prop->get) { |
| 1524 | error_setg(errp, "Property '%s.%s' is not readable", |
| 1525 | object_get_typename(obj), name); |
| 1526 | return false; |
| 1527 | } |
| 1528 | prop->get(obj, v, name, prop->opaque, &err); |
| 1529 | error_propagate(errp, err); |
| 1530 | return !err; |
| 1531 | } |
| 1532 | |
| 1533 | bool object_property_set(Object *obj, const char *name, Visitor *v, |
| 1534 | Error **errp) |
| 1535 | { |
| 1536 | ERRP_GUARD(); |
| 1537 | ObjectProperty *prop = object_property_find_err(obj, name, errp); |
| 1538 | |
| 1539 | if (prop == NULL) { |
| 1540 | return false; |
| 1541 | } |
| 1542 | |
| 1543 | if (!prop->set) { |
| 1544 | error_setg(errp, "Property '%s.%s' is not writable", |
| 1545 | object_get_typename(obj), name); |
| 1546 | return false; |
| 1547 | } |
| 1548 | prop->set(obj, v, name, prop->opaque, errp); |
| 1549 | return !*errp; |
| 1550 | } |
| 1551 | |
| 1552 | bool object_property_set_str(Object *obj, const char *name, |
| 1553 | const char *value, Error **errp) |
| 1554 | { |
| 1555 | QString *qstr = qstring_from_str(value); |
| 1556 | bool ok = object_property_set_qobject(obj, name, QOBJECT(qstr), errp); |
| 1557 | |
| 1558 | qobject_unref(qstr); |
| 1559 | return ok; |
| 1560 | } |
| 1561 | |
| 1562 | char *object_property_get_str(Object *obj, const char *name, |
| 1563 | Error **errp) |
| 1564 | { |
| 1565 | QObject *ret = object_property_get_qobject(obj, name, errp); |
| 1566 | QString *qstring; |
| 1567 | char *retval; |
| 1568 | |
| 1569 | if (!ret) { |
| 1570 | return NULL; |
| 1571 | } |
| 1572 | qstring = qobject_to(QString, ret); |
| 1573 | if (!qstring) { |
| 1574 | error_setg(errp, "Invalid parameter type for '%s', expected: string", |
| 1575 | name); |
| 1576 | retval = NULL; |
| 1577 | } else { |
| 1578 | retval = g_strdup(qstring_get_str(qstring)); |
| 1579 | } |
| 1580 | |
| 1581 | qobject_unref(ret); |
| 1582 | return retval; |
| 1583 | } |
| 1584 | |
| 1585 | bool object_property_set_link(Object *obj, const char *name, |
| 1586 | Object *value, Error **errp) |
| 1587 | { |
| 1588 | g_autofree char *path = NULL; |
| 1589 | |
| 1590 | if (value) { |
| 1591 | path = object_get_canonical_path(value); |
| 1592 | } |
| 1593 | return object_property_set_str(obj, name, path ?: "", errp); |
| 1594 | } |
| 1595 | |
| 1596 | Object *object_property_get_link(Object *obj, const char *name, |
| 1597 | Error **errp) |
| 1598 | { |
| 1599 | char *str = object_property_get_str(obj, name, errp); |
| 1600 | Object *target = NULL; |
| 1601 | |
| 1602 | if (str && *str) { |
| 1603 | target = object_resolve_path(str, NULL); |
| 1604 | if (!target) { |
| 1605 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1606 | "Device '%s' not found", str); |
| 1607 | } |
| 1608 | } |
| 1609 | |
| 1610 | g_free(str); |
| 1611 | return target; |
| 1612 | } |
| 1613 | |
| 1614 | bool object_property_set_bool(Object *obj, const char *name, |
| 1615 | bool value, Error **errp) |
| 1616 | { |
| 1617 | QBool *qbool = qbool_from_bool(value); |
| 1618 | bool ok = object_property_set_qobject(obj, name, QOBJECT(qbool), errp); |
| 1619 | |
| 1620 | qobject_unref(qbool); |
| 1621 | return ok; |
| 1622 | } |
| 1623 | |
| 1624 | bool object_property_get_bool(Object *obj, const char *name, |
| 1625 | Error **errp) |
| 1626 | { |
| 1627 | QObject *ret = object_property_get_qobject(obj, name, errp); |
| 1628 | QBool *qbool; |
| 1629 | bool retval; |
| 1630 | |
| 1631 | if (!ret) { |
| 1632 | return false; |
| 1633 | } |
| 1634 | qbool = qobject_to(QBool, ret); |
| 1635 | if (!qbool) { |
| 1636 | error_setg(errp, "Invalid parameter type for '%s', expected: boolean", |
| 1637 | name); |
| 1638 | retval = false; |
| 1639 | } else { |
| 1640 | retval = qbool_get_bool(qbool); |
| 1641 | } |
| 1642 | |
| 1643 | qobject_unref(ret); |
| 1644 | return retval; |
| 1645 | } |
| 1646 | |
| 1647 | bool object_property_set_int(Object *obj, const char *name, |
| 1648 | int64_t value, Error **errp) |
| 1649 | { |
| 1650 | QNum *qnum = qnum_from_int(value); |
| 1651 | bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp); |
| 1652 | |
| 1653 | qobject_unref(qnum); |
| 1654 | return ok; |
| 1655 | } |
| 1656 | |
| 1657 | int64_t object_property_get_int(Object *obj, const char *name, |
| 1658 | Error **errp) |
| 1659 | { |
| 1660 | QObject *ret = object_property_get_qobject(obj, name, errp); |
| 1661 | QNum *qnum; |
| 1662 | int64_t retval; |
| 1663 | |
| 1664 | if (!ret) { |
| 1665 | return -1; |
| 1666 | } |
| 1667 | |
| 1668 | qnum = qobject_to(QNum, ret); |
| 1669 | if (!qnum || !qnum_get_try_int(qnum, &retval)) { |
| 1670 | error_setg(errp, "Invalid parameter type for '%s', expected: int", |
| 1671 | name); |
| 1672 | retval = -1; |
| 1673 | } |
| 1674 | |
| 1675 | qobject_unref(ret); |
| 1676 | return retval; |
| 1677 | } |
| 1678 | |
| 1679 | static void object_property_init_defval(Object *obj, ObjectProperty *prop) |
| 1680 | { |
| 1681 | Visitor *v = qobject_input_visitor_new(prop->defval); |
| 1682 | |
| 1683 | assert(prop->set != NULL); |
| 1684 | prop->set(obj, v, prop->name, prop->opaque, &error_abort); |
| 1685 | |
| 1686 | visit_free(v); |
| 1687 | } |
| 1688 | |
| 1689 | static void object_property_set_default(ObjectProperty *prop, QObject *defval) |
| 1690 | { |
| 1691 | assert(!prop->defval); |
| 1692 | assert(!prop->init); |
| 1693 | |
| 1694 | prop->defval = defval; |
| 1695 | prop->init = object_property_init_defval; |
| 1696 | } |
| 1697 | |
| 1698 | void object_property_set_default_bool(ObjectProperty *prop, bool value) |
| 1699 | { |
| 1700 | object_property_set_default(prop, QOBJECT(qbool_from_bool(value))); |
| 1701 | } |
| 1702 | |
| 1703 | void object_property_set_default_str(ObjectProperty *prop, const char *value) |
| 1704 | { |
| 1705 | object_property_set_default(prop, QOBJECT(qstring_from_str(value))); |
| 1706 | } |
| 1707 | |
| 1708 | void object_property_set_default_list(ObjectProperty *prop) |
| 1709 | { |
| 1710 | object_property_set_default(prop, QOBJECT(qlist_new())); |
| 1711 | } |
| 1712 | |
| 1713 | void object_property_set_default_int(ObjectProperty *prop, int64_t value) |
| 1714 | { |
| 1715 | object_property_set_default(prop, QOBJECT(qnum_from_int(value))); |
| 1716 | } |
| 1717 | |
| 1718 | void object_property_set_default_uint(ObjectProperty *prop, uint64_t value) |
| 1719 | { |
| 1720 | object_property_set_default(prop, QOBJECT(qnum_from_uint(value))); |
| 1721 | } |
| 1722 | |
| 1723 | bool object_property_set_uint(Object *obj, const char *name, |
| 1724 | uint64_t value, Error **errp) |
| 1725 | { |
| 1726 | QNum *qnum = qnum_from_uint(value); |
| 1727 | bool ok = object_property_set_qobject(obj, name, QOBJECT(qnum), errp); |
| 1728 | |
| 1729 | qobject_unref(qnum); |
| 1730 | return ok; |
| 1731 | } |
| 1732 | |
| 1733 | uint64_t object_property_get_uint(Object *obj, const char *name, |
| 1734 | Error **errp) |
| 1735 | { |
| 1736 | QObject *ret = object_property_get_qobject(obj, name, errp); |
| 1737 | QNum *qnum; |
| 1738 | uint64_t retval; |
| 1739 | |
| 1740 | if (!ret) { |
| 1741 | return 0; |
| 1742 | } |
| 1743 | qnum = qobject_to(QNum, ret); |
| 1744 | if (!qnum || !qnum_get_try_uint(qnum, &retval)) { |
| 1745 | error_setg(errp, "Invalid parameter type for '%s', expected: uint", |
| 1746 | name); |
| 1747 | retval = 0; |
| 1748 | } |
| 1749 | |
| 1750 | qobject_unref(ret); |
| 1751 | return retval; |
| 1752 | } |
| 1753 | |
| 1754 | typedef struct EnumProperty { |
| 1755 | const QEnumLookup *lookup; |
| 1756 | int (*get)(Object *, Error **); |
| 1757 | void (*set)(Object *, int, Error **); |
| 1758 | } EnumProperty; |
| 1759 | |
| 1760 | int object_property_get_enum(Object *obj, const char *name, |
| 1761 | const char *typename, Error **errp) |
| 1762 | { |
| 1763 | char *str; |
| 1764 | int ret; |
| 1765 | ObjectProperty *prop = object_property_find_err(obj, name, errp); |
| 1766 | EnumProperty *enumprop; |
| 1767 | |
| 1768 | if (prop == NULL) { |
| 1769 | return -1; |
| 1770 | } |
| 1771 | |
| 1772 | if (!g_str_equal(prop->type, typename)) { |
| 1773 | error_setg(errp, "Property %s on %s is not '%s' enum type", |
| 1774 | name, object_class_get_name( |
| 1775 | object_get_class(obj)), typename); |
| 1776 | return -1; |
| 1777 | } |
| 1778 | |
| 1779 | enumprop = prop->opaque; |
| 1780 | |
| 1781 | str = object_property_get_str(obj, name, errp); |
| 1782 | if (!str) { |
| 1783 | return -1; |
| 1784 | } |
| 1785 | |
| 1786 | ret = qapi_enum_parse(enumprop->lookup, str, -1, errp); |
| 1787 | g_free(str); |
| 1788 | |
| 1789 | return ret; |
| 1790 | } |
| 1791 | |
| 1792 | bool object_property_parse(Object *obj, const char *name, |
| 1793 | const char *string, Error **errp) |
| 1794 | { |
| 1795 | Visitor *v; |
| 1796 | bool ok; |
| 1797 | trace_object_property_parse(obj, obj->class->type->name, name, string); |
| 1798 | v = string_input_visitor_new(string); |
| 1799 | ok = object_property_set(obj, name, v, errp); |
| 1800 | |
| 1801 | visit_free(v); |
| 1802 | return ok; |
| 1803 | } |
| 1804 | |
| 1805 | char *object_property_print(Object *obj, const char *name, bool human, |
| 1806 | Error **errp) |
| 1807 | { |
| 1808 | Visitor *v; |
| 1809 | char *string = NULL; |
| 1810 | |
| 1811 | v = string_output_visitor_new(human, &string); |
| 1812 | if (!object_property_get(obj, name, v, errp)) { |
| 1813 | goto out; |
| 1814 | } |
| 1815 | |
| 1816 | visit_complete(v, &string); |
| 1817 | |
| 1818 | out: |
| 1819 | visit_free(v); |
| 1820 | return string; |
| 1821 | } |
| 1822 | |
| 1823 | const char *object_property_get_type(Object *obj, const char *name, Error **errp) |
| 1824 | { |
| 1825 | ObjectProperty *prop = object_property_find_err(obj, name, errp); |
| 1826 | if (prop == NULL) { |
| 1827 | return NULL; |
| 1828 | } |
| 1829 | |
| 1830 | return prop->type; |
| 1831 | } |
| 1832 | |
| 1833 | static const char *const root_containers[] = { |
| 1834 | "audiodevs", |
| 1835 | "chardevs", |
| 1836 | "objects", |
| 1837 | "backend" |
| 1838 | }; |
| 1839 | |
| 1840 | static Object *object_root_initialize(void) |
| 1841 | { |
| 1842 | Object *root = object_new(TYPE_CONTAINER); |
| 1843 | int i; |
| 1844 | |
| 1845 | /* |
| 1846 | * Create all QEMU system containers. "machine" and its sub-containers |
| 1847 | * are only created when machine initializes (qemu_create_machine()). |
| 1848 | */ |
| 1849 | for (i = 0; i < ARRAY_SIZE(root_containers); i++) { |
| 1850 | object_property_add_new_container(root, root_containers[i]); |
| 1851 | } |
| 1852 | |
| 1853 | return root; |
| 1854 | } |
| 1855 | |
| 1856 | Object *object_get_container(const char *name) |
| 1857 | { |
| 1858 | Object *container; |
| 1859 | |
| 1860 | container = object_resolve_path_component(object_get_root(), name); |
| 1861 | assert(object_dynamic_cast(container, TYPE_CONTAINER)); |
| 1862 | |
| 1863 | return container; |
| 1864 | } |
| 1865 | |
| 1866 | Object *object_get_root(void) |
| 1867 | { |
| 1868 | static Object *root; |
| 1869 | |
| 1870 | if (!root) { |
| 1871 | root = object_root_initialize(); |
| 1872 | } |
| 1873 | |
| 1874 | return root; |
| 1875 | } |
| 1876 | |
| 1877 | Object *object_get_objects_root(void) |
| 1878 | { |
| 1879 | return object_get_container("objects"); |
| 1880 | } |
| 1881 | |
| 1882 | Object *object_get_internal_root(void) |
| 1883 | { |
| 1884 | static Object *internal_root; |
| 1885 | |
| 1886 | if (!internal_root) { |
| 1887 | internal_root = object_new(TYPE_CONTAINER); |
| 1888 | } |
| 1889 | |
| 1890 | return internal_root; |
| 1891 | } |
| 1892 | |
| 1893 | static void object_get_child_property(Object *obj, Visitor *v, |
| 1894 | const char *name, void *opaque, |
| 1895 | Error **errp) |
| 1896 | { |
| 1897 | Object *child = opaque; |
| 1898 | char *path; |
| 1899 | |
| 1900 | path = object_get_canonical_path(child); |
| 1901 | visit_type_str(v, name, &path, errp); |
| 1902 | g_free(path); |
| 1903 | } |
| 1904 | |
| 1905 | static Object *object_resolve_child_property(Object *parent, void *opaque, |
| 1906 | const char *part) |
| 1907 | { |
| 1908 | return opaque; |
| 1909 | } |
| 1910 | |
| 1911 | static void object_finalize_child_property(Object *obj, const char *name, |
| 1912 | void *opaque) |
| 1913 | { |
| 1914 | Object *child = opaque; |
| 1915 | |
| 1916 | if (child->class->unparent) { |
| 1917 | (child->class->unparent)(child); |
| 1918 | } |
| 1919 | child->parent = NULL; |
| 1920 | object_unref(child); |
| 1921 | } |
| 1922 | |
| 1923 | ObjectProperty * |
| 1924 | object_property_try_add_child(Object *obj, const char *name, |
| 1925 | Object *child, Error **errp) |
| 1926 | { |
| 1927 | g_autofree char *type = NULL; |
| 1928 | ObjectProperty *op; |
| 1929 | |
| 1930 | trace_object_property_add_child(obj, obj->class->type->name, name, |
| 1931 | child, child->class->type->name); |
| 1932 | assert(!child->parent); |
| 1933 | |
| 1934 | type = g_strdup_printf("child<%s>", object_get_typename(child)); |
| 1935 | |
| 1936 | op = object_property_try_add(obj, name, type, object_get_child_property, |
| 1937 | NULL, object_finalize_child_property, |
| 1938 | child, errp); |
| 1939 | if (!op) { |
| 1940 | return NULL; |
| 1941 | } |
| 1942 | op->resolve = object_resolve_child_property; |
| 1943 | object_ref(child); |
| 1944 | child->parent = obj; |
| 1945 | return op; |
| 1946 | } |
| 1947 | |
| 1948 | ObjectProperty * |
| 1949 | object_property_add_child(Object *obj, const char *name, |
| 1950 | Object *child) |
| 1951 | { |
| 1952 | return object_property_try_add_child(obj, name, child, &error_abort); |
| 1953 | } |
| 1954 | |
| 1955 | void object_property_allow_set_link(const Object *obj, const char *name, |
| 1956 | Object *val, Error **errp) |
| 1957 | { |
| 1958 | /* Allow the link to be set, always */ |
| 1959 | } |
| 1960 | |
| 1961 | typedef struct { |
| 1962 | union { |
| 1963 | Object **targetp; |
| 1964 | Object *target; /* if OBJ_PROP_LINK_DIRECT, when holding the pointer */ |
| 1965 | ptrdiff_t offset; /* if OBJ_PROP_LINK_CLASS */ |
| 1966 | }; |
| 1967 | void (*check)(const Object *, const char *, Object *, Error **); |
| 1968 | ObjectPropertyLinkFlags flags; |
| 1969 | } LinkProperty; |
| 1970 | |
| 1971 | static Object ** |
| 1972 | object_link_get_targetp(Object *obj, LinkProperty *lprop) |
| 1973 | { |
| 1974 | if (lprop->flags & OBJ_PROP_LINK_DIRECT) { |
| 1975 | return &lprop->target; |
| 1976 | } else if (lprop->flags & OBJ_PROP_LINK_CLASS) { |
| 1977 | return (void *)obj + lprop->offset; |
| 1978 | } else { |
| 1979 | return lprop->targetp; |
| 1980 | } |
| 1981 | } |
| 1982 | |
| 1983 | static void object_get_link_property(Object *obj, Visitor *v, |
| 1984 | const char *name, void *opaque, |
| 1985 | Error **errp) |
| 1986 | { |
| 1987 | LinkProperty *lprop = opaque; |
| 1988 | Object **targetp = object_link_get_targetp(obj, lprop); |
| 1989 | char *path; |
| 1990 | |
| 1991 | if (*targetp) { |
| 1992 | path = object_get_canonical_path(*targetp); |
| 1993 | visit_type_str(v, name, &path, errp); |
| 1994 | g_free(path); |
| 1995 | } else { |
| 1996 | path = (char *)""; |
| 1997 | visit_type_str(v, name, &path, errp); |
| 1998 | } |
| 1999 | } |
| 2000 | |
| 2001 | Object *object_resolve_and_typecheck(const char *path, const char *name, |
| 2002 | const char *target_type, Error **errp) |
| 2003 | { |
| 2004 | bool ambiguous = false; |
| 2005 | Object *target; |
| 2006 | |
| 2007 | target = object_resolve_path_type(path, target_type, &ambiguous); |
| 2008 | |
| 2009 | if (ambiguous) { |
| 2010 | error_setg(errp, "Path '%s' does not uniquely identify an object", |
| 2011 | path); |
| 2012 | } else if (!target) { |
| 2013 | target = object_resolve_path(path, &ambiguous); |
| 2014 | if (target || ambiguous) { |
| 2015 | error_setg(errp, "Invalid parameter type for '%s', expected: %s", |
| 2016 | name, target_type); |
| 2017 | } else { |
| 2018 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2019 | "Device '%s' not found", path); |
| 2020 | } |
| 2021 | target = NULL; |
| 2022 | } |
| 2023 | return target; |
| 2024 | } |
| 2025 | |
| 2026 | /* |
| 2027 | * object_resolve_link: |
| 2028 | * |
| 2029 | * Lookup an object and ensure its type matches the link property type. This |
| 2030 | * is similar to object_resolve_path() except type verification against the |
| 2031 | * link property is performed. |
| 2032 | * |
| 2033 | * Returns: The matched object or NULL on path lookup failures. |
| 2034 | */ |
| 2035 | static Object *object_resolve_link(Object *obj, const char *name, |
| 2036 | const char *path, Error **errp) |
| 2037 | { |
| 2038 | const char *type; |
| 2039 | g_autofree char *target_type = NULL; |
| 2040 | |
| 2041 | /* Go from link<FOO> to FOO. */ |
| 2042 | type = object_property_get_type(obj, name, NULL); |
| 2043 | target_type = g_strndup(&type[5], strlen(type) - 6); |
| 2044 | return object_resolve_and_typecheck(path, name, target_type, errp); |
| 2045 | } |
| 2046 | |
| 2047 | static void object_set_link_property(Object *obj, Visitor *v, |
| 2048 | const char *name, void *opaque, |
| 2049 | Error **errp) |
| 2050 | { |
| 2051 | Error *local_err = NULL; |
| 2052 | LinkProperty *prop = opaque; |
| 2053 | Object **targetp = object_link_get_targetp(obj, prop); |
| 2054 | Object *old_target = *targetp; |
| 2055 | Object *new_target; |
| 2056 | char *path = NULL; |
| 2057 | |
| 2058 | if (!visit_type_str(v, name, &path, errp)) { |
| 2059 | return; |
| 2060 | } |
| 2061 | |
| 2062 | if (*path) { |
| 2063 | new_target = object_resolve_link(obj, name, path, errp); |
| 2064 | if (!new_target) { |
| 2065 | g_free(path); |
| 2066 | return; |
| 2067 | } |
| 2068 | } else { |
| 2069 | new_target = NULL; |
| 2070 | } |
| 2071 | |
| 2072 | g_free(path); |
| 2073 | |
| 2074 | prop->check(obj, name, new_target, &local_err); |
| 2075 | if (local_err) { |
| 2076 | error_propagate(errp, local_err); |
| 2077 | return; |
| 2078 | } |
| 2079 | |
| 2080 | *targetp = new_target; |
| 2081 | if (prop->flags & OBJ_PROP_LINK_STRONG) { |
| 2082 | object_ref(new_target); |
| 2083 | object_unref(old_target); |
| 2084 | } |
| 2085 | } |
| 2086 | |
| 2087 | static Object *object_resolve_link_property(Object *parent, void *opaque, |
| 2088 | const char *part) |
| 2089 | { |
| 2090 | LinkProperty *lprop = opaque; |
| 2091 | |
| 2092 | return *object_link_get_targetp(parent, lprop); |
| 2093 | } |
| 2094 | |
| 2095 | static void object_release_link_property(Object *obj, const char *name, |
| 2096 | void *opaque) |
| 2097 | { |
| 2098 | LinkProperty *prop = opaque; |
| 2099 | Object **targetp = object_link_get_targetp(obj, prop); |
| 2100 | |
| 2101 | if ((prop->flags & OBJ_PROP_LINK_STRONG) && *targetp) { |
| 2102 | object_unref(*targetp); |
| 2103 | } |
| 2104 | if (!(prop->flags & OBJ_PROP_LINK_CLASS)) { |
| 2105 | g_free(prop); |
| 2106 | } |
| 2107 | } |
| 2108 | |
| 2109 | static ObjectProperty * |
| 2110 | object_add_link_prop(Object *obj, const char *name, |
| 2111 | const char *type, void *ptr, |
| 2112 | void (*check)(const Object *, const char *, |
| 2113 | Object *, Error **), |
| 2114 | ObjectPropertyLinkFlags flags) |
| 2115 | { |
| 2116 | LinkProperty *prop = g_malloc(sizeof(*prop)); |
| 2117 | g_autofree char *full_type = NULL; |
| 2118 | ObjectProperty *op; |
| 2119 | |
| 2120 | if (flags & OBJ_PROP_LINK_DIRECT) { |
| 2121 | prop->target = ptr; |
| 2122 | } else { |
| 2123 | prop->targetp = ptr; |
| 2124 | } |
| 2125 | prop->check = check; |
| 2126 | prop->flags = flags; |
| 2127 | |
| 2128 | full_type = g_strdup_printf("link<%s>", type); |
| 2129 | |
| 2130 | op = object_property_add(obj, name, full_type, |
| 2131 | object_get_link_property, |
| 2132 | check ? object_set_link_property : NULL, |
| 2133 | object_release_link_property, |
| 2134 | prop); |
| 2135 | op->resolve = object_resolve_link_property; |
| 2136 | return op; |
| 2137 | } |
| 2138 | |
| 2139 | ObjectProperty * |
| 2140 | object_property_add_link(Object *obj, const char *name, |
| 2141 | const char *type, Object **targetp, |
| 2142 | void (*check)(const Object *, const char *, |
| 2143 | Object *, Error **), |
| 2144 | ObjectPropertyLinkFlags flags) |
| 2145 | { |
| 2146 | return object_add_link_prop(obj, name, type, targetp, check, flags); |
| 2147 | } |
| 2148 | |
| 2149 | ObjectProperty * |
| 2150 | object_class_property_add_link(ObjectClass *oc, |
| 2151 | const char *name, |
| 2152 | const char *type, ptrdiff_t offset, |
| 2153 | void (*check)(const Object *obj, const char *name, |
| 2154 | Object *val, Error **errp), |
| 2155 | ObjectPropertyLinkFlags flags) |
| 2156 | { |
| 2157 | LinkProperty *prop = g_new0(LinkProperty, 1); |
| 2158 | char *full_type; |
| 2159 | ObjectProperty *op; |
| 2160 | |
| 2161 | prop->offset = offset; |
| 2162 | prop->check = check; |
| 2163 | prop->flags = flags | OBJ_PROP_LINK_CLASS; |
| 2164 | |
| 2165 | full_type = g_strdup_printf("link<%s>", type); |
| 2166 | |
| 2167 | op = object_class_property_add(oc, name, full_type, |
| 2168 | object_get_link_property, |
| 2169 | check ? object_set_link_property : NULL, |
| 2170 | object_release_link_property, |
| 2171 | prop); |
| 2172 | |
| 2173 | op->resolve = object_resolve_link_property; |
| 2174 | |
| 2175 | g_free(full_type); |
| 2176 | return op; |
| 2177 | } |
| 2178 | |
| 2179 | ObjectProperty * |
| 2180 | object_property_add_const_link(Object *obj, const char *name, |
| 2181 | Object *target) |
| 2182 | { |
| 2183 | return object_add_link_prop(obj, name, |
| 2184 | object_get_typename(target), target, |
| 2185 | NULL, OBJ_PROP_LINK_DIRECT); |
| 2186 | } |
| 2187 | |
| 2188 | const char *object_get_canonical_path_component(const Object *obj) |
| 2189 | { |
| 2190 | ObjectProperty *prop = NULL; |
| 2191 | GHashTableIter iter; |
| 2192 | |
| 2193 | if (obj->parent == NULL) { |
| 2194 | return NULL; |
| 2195 | } |
| 2196 | |
| 2197 | g_hash_table_iter_init(&iter, obj->parent->properties); |
| 2198 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
| 2199 | if (!object_property_is_child(prop)) { |
| 2200 | continue; |
| 2201 | } |
| 2202 | |
| 2203 | if (prop->opaque == obj) { |
| 2204 | return prop->name; |
| 2205 | } |
| 2206 | } |
| 2207 | |
| 2208 | /* obj had a parent but was not a child, should never happen */ |
| 2209 | g_assert_not_reached(); |
| 2210 | } |
| 2211 | |
| 2212 | char *object_get_canonical_path(const Object *obj) |
| 2213 | { |
| 2214 | Object *root = object_get_root(); |
| 2215 | char *newpath, *path = NULL; |
| 2216 | |
| 2217 | if (obj == root) { |
| 2218 | return g_strdup("/"); |
| 2219 | } |
| 2220 | |
| 2221 | do { |
| 2222 | const char *component = object_get_canonical_path_component(obj); |
| 2223 | |
| 2224 | if (!component) { |
| 2225 | /* A canonical path must be complete, so discard what was |
| 2226 | * collected so far. |
| 2227 | */ |
| 2228 | g_free(path); |
| 2229 | return NULL; |
| 2230 | } |
| 2231 | |
| 2232 | newpath = g_strdup_printf("/%s%s", component, path ? path : ""); |
| 2233 | g_free(path); |
| 2234 | path = newpath; |
| 2235 | obj = obj->parent; |
| 2236 | } while (obj != root); |
| 2237 | |
| 2238 | return path; |
| 2239 | } |
| 2240 | |
| 2241 | Object *object_resolve_path_component(Object *parent, const char *part) |
| 2242 | { |
| 2243 | ObjectProperty *prop = object_property_find(parent, part); |
| 2244 | if (prop == NULL) { |
| 2245 | return NULL; |
| 2246 | } |
| 2247 | |
| 2248 | if (prop->resolve) { |
| 2249 | return prop->resolve(parent, prop->opaque, part); |
| 2250 | } else { |
| 2251 | return NULL; |
| 2252 | } |
| 2253 | } |
| 2254 | |
| 2255 | static Object *object_resolve_abs_path(Object *parent, |
| 2256 | char **parts, |
| 2257 | const char *typename) |
| 2258 | { |
| 2259 | Object *child; |
| 2260 | |
| 2261 | if (*parts == NULL) { |
| 2262 | return object_dynamic_cast(parent, typename); |
| 2263 | } |
| 2264 | |
| 2265 | if (strcmp(*parts, "") == 0) { |
| 2266 | return object_resolve_abs_path(parent, parts + 1, typename); |
| 2267 | } |
| 2268 | |
| 2269 | child = object_resolve_path_component(parent, *parts); |
| 2270 | if (!child) { |
| 2271 | return NULL; |
| 2272 | } |
| 2273 | |
| 2274 | return object_resolve_abs_path(child, parts + 1, typename); |
| 2275 | } |
| 2276 | |
| 2277 | static Object *object_resolve_partial_path(Object *parent, |
| 2278 | char **parts, |
| 2279 | const char *typename, |
| 2280 | bool *ambiguous) |
| 2281 | { |
| 2282 | Object *obj; |
| 2283 | GHashTableIter iter; |
| 2284 | ObjectProperty *prop; |
| 2285 | |
| 2286 | obj = object_resolve_abs_path(parent, parts, typename); |
| 2287 | |
| 2288 | g_hash_table_iter_init(&iter, parent->properties); |
| 2289 | while (g_hash_table_iter_next(&iter, NULL, (gpointer *)&prop)) { |
| 2290 | Object *found; |
| 2291 | |
| 2292 | if (!object_property_is_child(prop)) { |
| 2293 | continue; |
| 2294 | } |
| 2295 | |
| 2296 | found = object_resolve_partial_path(prop->opaque, parts, |
| 2297 | typename, ambiguous); |
| 2298 | if (found) { |
| 2299 | if (obj) { |
| 2300 | *ambiguous = true; |
| 2301 | return NULL; |
| 2302 | } |
| 2303 | obj = found; |
| 2304 | } |
| 2305 | |
| 2306 | if (*ambiguous) { |
| 2307 | return NULL; |
| 2308 | } |
| 2309 | } |
| 2310 | |
| 2311 | return obj; |
| 2312 | } |
| 2313 | |
| 2314 | Object *object_resolve_path_type(const char *path, const char *typename, |
| 2315 | bool *ambiguous) |
| 2316 | { |
| 2317 | Object *obj; |
| 2318 | char **parts; |
| 2319 | |
| 2320 | parts = g_strsplit(path, "/", 0); |
| 2321 | assert(parts); |
| 2322 | |
| 2323 | if (parts[0] == NULL || strcmp(parts[0], "") != 0) { |
| 2324 | bool ambig = false; |
| 2325 | obj = object_resolve_partial_path(object_get_root(), parts, |
| 2326 | typename, &ambig); |
| 2327 | if (ambiguous) { |
| 2328 | *ambiguous = ambig; |
| 2329 | } |
| 2330 | } else { |
| 2331 | obj = object_resolve_abs_path(object_get_root(), parts + 1, typename); |
| 2332 | if (ambiguous) { |
| 2333 | *ambiguous = false; |
| 2334 | } |
| 2335 | } |
| 2336 | |
| 2337 | g_strfreev(parts); |
| 2338 | |
| 2339 | return obj; |
| 2340 | } |
| 2341 | |
| 2342 | Object *object_resolve_path(const char *path, bool *ambiguous) |
| 2343 | { |
| 2344 | return object_resolve_path_type(path, TYPE_OBJECT, ambiguous); |
| 2345 | } |
| 2346 | |
| 2347 | Object *object_resolve_path_at(Object *parent, const char *path) |
| 2348 | { |
| 2349 | g_auto(GStrv) parts = g_strsplit(path, "/", 0); |
| 2350 | |
| 2351 | if (*path == '/') { |
| 2352 | return object_resolve_abs_path(object_get_root(), parts + 1, |
| 2353 | TYPE_OBJECT); |
| 2354 | } |
| 2355 | return object_resolve_abs_path(parent, parts, TYPE_OBJECT); |
| 2356 | } |
| 2357 | |
| 2358 | Object *object_resolve_type_unambiguous(const char *typename, Error **errp) |
| 2359 | { |
| 2360 | bool ambig = false; |
| 2361 | Object *o = object_resolve_path_type("", typename, &ambig); |
| 2362 | |
| 2363 | if (ambig) { |
| 2364 | error_setg(errp, "More than one object of type %s", typename); |
| 2365 | return NULL; |
| 2366 | } |
| 2367 | if (!o) { |
| 2368 | error_setg(errp, "No object found of type %s", typename); |
| 2369 | return NULL; |
| 2370 | } |
| 2371 | return o; |
| 2372 | } |
| 2373 | |
| 2374 | typedef struct StringProperty |
| 2375 | { |
| 2376 | char *(*get)(Object *, Error **); |
| 2377 | void (*set)(Object *, const char *, Error **); |
| 2378 | } StringProperty; |
| 2379 | |
| 2380 | static void property_get_str(Object *obj, Visitor *v, const char *name, |
| 2381 | void *opaque, Error **errp) |
| 2382 | { |
| 2383 | StringProperty *prop = opaque; |
| 2384 | char *value; |
| 2385 | Error *err = NULL; |
| 2386 | |
| 2387 | value = prop->get(obj, &err); |
| 2388 | if (err) { |
| 2389 | error_propagate(errp, err); |
| 2390 | return; |
| 2391 | } |
| 2392 | |
| 2393 | visit_type_str(v, name, &value, errp); |
| 2394 | g_free(value); |
| 2395 | } |
| 2396 | |
| 2397 | static void property_set_str(Object *obj, Visitor *v, const char *name, |
| 2398 | void *opaque, Error **errp) |
| 2399 | { |
| 2400 | StringProperty *prop = opaque; |
| 2401 | char *value; |
| 2402 | |
| 2403 | if (!visit_type_str(v, name, &value, errp)) { |
| 2404 | return; |
| 2405 | } |
| 2406 | |
| 2407 | prop->set(obj, value, errp); |
| 2408 | g_free(value); |
| 2409 | } |
| 2410 | |
| 2411 | static void property_release_data(Object *obj, const char *name, |
| 2412 | void *opaque) |
| 2413 | { |
| 2414 | g_free(opaque); |
| 2415 | } |
| 2416 | |
| 2417 | ObjectProperty * |
| 2418 | object_property_add_str(Object *obj, const char *name, |
| 2419 | char *(*get)(Object *, Error **), |
| 2420 | void (*set)(Object *, const char *, Error **)) |
| 2421 | { |
| 2422 | StringProperty *prop = g_malloc0(sizeof(*prop)); |
| 2423 | |
| 2424 | prop->get = get; |
| 2425 | prop->set = set; |
| 2426 | |
| 2427 | return object_property_add(obj, name, "string", |
| 2428 | get ? property_get_str : NULL, |
| 2429 | set ? property_set_str : NULL, |
| 2430 | property_release_data, |
| 2431 | prop); |
| 2432 | } |
| 2433 | |
| 2434 | ObjectProperty * |
| 2435 | object_class_property_add_str(ObjectClass *klass, const char *name, |
| 2436 | char *(*get)(Object *, Error **), |
| 2437 | void (*set)(Object *, const char *, |
| 2438 | Error **)) |
| 2439 | { |
| 2440 | StringProperty *prop = g_malloc0(sizeof(*prop)); |
| 2441 | |
| 2442 | prop->get = get; |
| 2443 | prop->set = set; |
| 2444 | |
| 2445 | return object_class_property_add(klass, name, "string", |
| 2446 | get ? property_get_str : NULL, |
| 2447 | set ? property_set_str : NULL, |
| 2448 | NULL, |
| 2449 | prop); |
| 2450 | } |
| 2451 | |
| 2452 | typedef struct BoolProperty |
| 2453 | { |
| 2454 | bool (*get)(Object *, Error **); |
| 2455 | void (*set)(Object *, bool, Error **); |
| 2456 | } BoolProperty; |
| 2457 | |
| 2458 | static void property_get_bool(Object *obj, Visitor *v, const char *name, |
| 2459 | void *opaque, Error **errp) |
| 2460 | { |
| 2461 | BoolProperty *prop = opaque; |
| 2462 | bool value; |
| 2463 | Error *err = NULL; |
| 2464 | |
| 2465 | value = prop->get(obj, &err); |
| 2466 | if (err) { |
| 2467 | error_propagate(errp, err); |
| 2468 | return; |
| 2469 | } |
| 2470 | |
| 2471 | visit_type_bool(v, name, &value, errp); |
| 2472 | } |
| 2473 | |
| 2474 | static void property_set_bool(Object *obj, Visitor *v, const char *name, |
| 2475 | void *opaque, Error **errp) |
| 2476 | { |
| 2477 | BoolProperty *prop = opaque; |
| 2478 | bool value; |
| 2479 | |
| 2480 | if (!visit_type_bool(v, name, &value, errp)) { |
| 2481 | return; |
| 2482 | } |
| 2483 | |
| 2484 | prop->set(obj, value, errp); |
| 2485 | } |
| 2486 | |
| 2487 | ObjectProperty * |
| 2488 | object_property_add_bool(Object *obj, const char *name, |
| 2489 | bool (*get)(Object *, Error **), |
| 2490 | void (*set)(Object *, bool, Error **)) |
| 2491 | { |
| 2492 | BoolProperty *prop = g_malloc0(sizeof(*prop)); |
| 2493 | |
| 2494 | prop->get = get; |
| 2495 | prop->set = set; |
| 2496 | |
| 2497 | return object_property_add(obj, name, "bool", |
| 2498 | get ? property_get_bool : NULL, |
| 2499 | set ? property_set_bool : NULL, |
| 2500 | property_release_data, |
| 2501 | prop); |
| 2502 | } |
| 2503 | |
| 2504 | ObjectProperty * |
| 2505 | object_class_property_add_bool(ObjectClass *klass, const char *name, |
| 2506 | bool (*get)(Object *, Error **), |
| 2507 | void (*set)(Object *, bool, Error **)) |
| 2508 | { |
| 2509 | BoolProperty *prop = g_malloc0(sizeof(*prop)); |
| 2510 | |
| 2511 | prop->get = get; |
| 2512 | prop->set = set; |
| 2513 | |
| 2514 | return object_class_property_add(klass, name, "bool", |
| 2515 | get ? property_get_bool : NULL, |
| 2516 | set ? property_set_bool : NULL, |
| 2517 | NULL, |
| 2518 | prop); |
| 2519 | } |
| 2520 | |
| 2521 | static void property_get_enum(Object *obj, Visitor *v, const char *name, |
| 2522 | void *opaque, Error **errp) |
| 2523 | { |
| 2524 | EnumProperty *prop = opaque; |
| 2525 | int value; |
| 2526 | Error *err = NULL; |
| 2527 | |
| 2528 | value = prop->get(obj, &err); |
| 2529 | if (err) { |
| 2530 | error_propagate(errp, err); |
| 2531 | return; |
| 2532 | } |
| 2533 | |
| 2534 | visit_type_enum(v, name, &value, prop->lookup, errp); |
| 2535 | } |
| 2536 | |
| 2537 | static void property_set_enum(Object *obj, Visitor *v, const char *name, |
| 2538 | void *opaque, Error **errp) |
| 2539 | { |
| 2540 | EnumProperty *prop = opaque; |
| 2541 | int value; |
| 2542 | |
| 2543 | if (!visit_type_enum(v, name, &value, prop->lookup, errp)) { |
| 2544 | return; |
| 2545 | } |
| 2546 | prop->set(obj, value, errp); |
| 2547 | } |
| 2548 | |
| 2549 | ObjectProperty * |
| 2550 | object_property_add_enum(Object *obj, const char *name, |
| 2551 | const char *typename, |
| 2552 | const QEnumLookup *lookup, |
| 2553 | int (*get)(Object *, Error **), |
| 2554 | void (*set)(Object *, int, Error **)) |
| 2555 | { |
| 2556 | EnumProperty *prop = g_malloc(sizeof(*prop)); |
| 2557 | |
| 2558 | prop->lookup = lookup; |
| 2559 | prop->get = get; |
| 2560 | prop->set = set; |
| 2561 | |
| 2562 | return object_property_add(obj, name, typename, |
| 2563 | get ? property_get_enum : NULL, |
| 2564 | set ? property_set_enum : NULL, |
| 2565 | property_release_data, |
| 2566 | prop); |
| 2567 | } |
| 2568 | |
| 2569 | ObjectProperty * |
| 2570 | object_class_property_add_enum(ObjectClass *klass, const char *name, |
| 2571 | const char *typename, |
| 2572 | const QEnumLookup *lookup, |
| 2573 | int (*get)(Object *, Error **), |
| 2574 | void (*set)(Object *, int, Error **)) |
| 2575 | { |
| 2576 | EnumProperty *prop = g_malloc(sizeof(*prop)); |
| 2577 | |
| 2578 | prop->lookup = lookup; |
| 2579 | prop->get = get; |
| 2580 | prop->set = set; |
| 2581 | |
| 2582 | return object_class_property_add(klass, name, typename, |
| 2583 | get ? property_get_enum : NULL, |
| 2584 | set ? property_set_enum : NULL, |
| 2585 | NULL, |
| 2586 | prop); |
| 2587 | } |
| 2588 | |
| 2589 | typedef struct TMProperty { |
| 2590 | void (*get)(Object *, struct tm *, Error **); |
| 2591 | } TMProperty; |
| 2592 | |
| 2593 | static void property_get_tm(Object *obj, Visitor *v, const char *name, |
| 2594 | void *opaque, Error **errp) |
| 2595 | { |
| 2596 | TMProperty *prop = opaque; |
| 2597 | Error *err = NULL; |
| 2598 | struct tm value; |
| 2599 | |
| 2600 | prop->get(obj, &value, &err); |
| 2601 | if (err) { |
| 2602 | error_propagate(errp, err); |
| 2603 | return; |
| 2604 | } |
| 2605 | |
| 2606 | if (!visit_start_struct(v, name, NULL, 0, errp)) { |
| 2607 | return; |
| 2608 | } |
| 2609 | if (!visit_type_int32(v, "tm_year", &value.tm_year, errp)) { |
| 2610 | goto out_end; |
| 2611 | } |
| 2612 | if (!visit_type_int32(v, "tm_mon", &value.tm_mon, errp)) { |
| 2613 | goto out_end; |
| 2614 | } |
| 2615 | if (!visit_type_int32(v, "tm_mday", &value.tm_mday, errp)) { |
| 2616 | goto out_end; |
| 2617 | } |
| 2618 | if (!visit_type_int32(v, "tm_hour", &value.tm_hour, errp)) { |
| 2619 | goto out_end; |
| 2620 | } |
| 2621 | if (!visit_type_int32(v, "tm_min", &value.tm_min, errp)) { |
| 2622 | goto out_end; |
| 2623 | } |
| 2624 | if (!visit_type_int32(v, "tm_sec", &value.tm_sec, errp)) { |
| 2625 | goto out_end; |
| 2626 | } |
| 2627 | visit_check_struct(v, errp); |
| 2628 | out_end: |
| 2629 | visit_end_struct(v, NULL); |
| 2630 | } |
| 2631 | |
| 2632 | ObjectProperty * |
| 2633 | object_property_add_tm(Object *obj, const char *name, |
| 2634 | void (*get)(Object *, struct tm *, Error **)) |
| 2635 | { |
| 2636 | TMProperty *prop = g_malloc0(sizeof(*prop)); |
| 2637 | |
| 2638 | prop->get = get; |
| 2639 | |
| 2640 | return object_property_add(obj, name, "struct tm", |
| 2641 | get ? property_get_tm : NULL, NULL, |
| 2642 | property_release_data, |
| 2643 | prop); |
| 2644 | } |
| 2645 | |
| 2646 | ObjectProperty * |
| 2647 | object_class_property_add_tm(ObjectClass *klass, const char *name, |
| 2648 | void (*get)(Object *, struct tm *, Error **)) |
| 2649 | { |
| 2650 | TMProperty *prop = g_malloc0(sizeof(*prop)); |
| 2651 | |
| 2652 | prop->get = get; |
| 2653 | |
| 2654 | return object_class_property_add(klass, name, "struct tm", |
| 2655 | get ? property_get_tm : NULL, |
| 2656 | NULL, NULL, prop); |
| 2657 | } |
| 2658 | |
| 2659 | static char *object_get_type(Object *obj, Error **errp) |
| 2660 | { |
| 2661 | return g_strdup(object_get_typename(obj)); |
| 2662 | } |
| 2663 | |
| 2664 | |
| 2665 | #define OBJECT_PROPERTY_SCALAR_GETTER(type) \ |
| 2666 | static void property_get_##type##_ptr(Object *obj, Visitor *v, \ |
| 2667 | const char *name, \ |
| 2668 | void *opaque, Error **errp) \ |
| 2669 | { \ |
| 2670 | type##_t value = *(type##_t *)opaque; \ |
| 2671 | visit_type_##type(v, name, &value, errp); \ |
| 2672 | } |
| 2673 | |
| 2674 | |
| 2675 | #define OBJECT_PROPERTY_SCALAR_SETTER(type) \ |
| 2676 | static void property_set_##type##_ptr(Object *obj, Visitor *v, \ |
| 2677 | const char *name, \ |
| 2678 | void *opaque, Error **errp) \ |
| 2679 | { \ |
| 2680 | type##_t *field = opaque; \ |
| 2681 | type##_t value; \ |
| 2682 | \ |
| 2683 | if (!visit_type_##type(v, name, &value, errp)) { \ |
| 2684 | return; \ |
| 2685 | } \ |
| 2686 | \ |
| 2687 | *field = value; \ |
| 2688 | } |
| 2689 | |
| 2690 | |
| 2691 | #define DEFINE_OBJECT_PROPERTY_SCALAR_METHODS(type) \ |
| 2692 | OBJECT_PROPERTY_SCALAR_GETTER(type) \ |
| 2693 | OBJECT_PROPERTY_SCALAR_SETTER(type) |
| 2694 | |
| 2695 | |
| 2696 | DEFINE_OBJECT_PROPERTY_SCALAR_METHODS(uint8) |
| 2697 | DEFINE_OBJECT_PROPERTY_SCALAR_METHODS(uint16) |
| 2698 | DEFINE_OBJECT_PROPERTY_SCALAR_METHODS(uint32) |
| 2699 | DEFINE_OBJECT_PROPERTY_SCALAR_METHODS(uint64) |
| 2700 | |
| 2701 | #undef OBJECT_PROPERTY_SCALAR_GETTER |
| 2702 | #undef OBJECT_PROPERTY_SCALAR_SETTER |
| 2703 | #undef DEFINE_OBJECT_PROPERTY_SCALAR_METHODS |
| 2704 | |
| 2705 | |
| 2706 | static void *object_class_prop_ptr(Object *obj, ptrdiff_t offset) |
| 2707 | { |
| 2708 | void *ptr = obj; |
| 2709 | ptr += offset; |
| 2710 | |
| 2711 | return ptr; |
| 2712 | } |
| 2713 | |
| 2714 | #define OBJECT_CLASS_PROPERTY_SCALAR_GETTER(type) \ |
| 2715 | static void property_class_get_##type##_ptr(Object *obj, Visitor *v, \ |
| 2716 | const char *name, \ |
| 2717 | void *opaque, Error **errp) \ |
| 2718 | { \ |
| 2719 | type##_t value = *(type##_t *)object_class_prop_ptr(obj, \ |
| 2720 | (ptrdiff_t)opaque); \ |
| 2721 | visit_type_##type(v, name, &value, errp); \ |
| 2722 | } |
| 2723 | |
| 2724 | #define OBJECT_CLASS_PROPERTY_SCALAR_SETTER(type) \ |
| 2725 | static void property_class_set_##type##_ptr(Object *obj, Visitor *v, \ |
| 2726 | const char *name, \ |
| 2727 | void *opaque, Error **errp) \ |
| 2728 | { \ |
| 2729 | type##_t *field = (type##_t *)object_class_prop_ptr(obj, \ |
| 2730 | (ptrdiff_t)opaque); \ |
| 2731 | type##_t value; \ |
| 2732 | \ |
| 2733 | if (!visit_type_##type(v, name, &value, errp)) { \ |
| 2734 | return; \ |
| 2735 | } \ |
| 2736 | \ |
| 2737 | *field = value; \ |
| 2738 | } |
| 2739 | |
| 2740 | #define DEFINE_OBJECT_CLASS_PROPERTY_SCALAR_METHODS(type) \ |
| 2741 | OBJECT_CLASS_PROPERTY_SCALAR_GETTER(type) \ |
| 2742 | OBJECT_CLASS_PROPERTY_SCALAR_SETTER(type) |
| 2743 | |
| 2744 | DEFINE_OBJECT_CLASS_PROPERTY_SCALAR_METHODS(uint8) |
| 2745 | DEFINE_OBJECT_CLASS_PROPERTY_SCALAR_METHODS(uint16) |
| 2746 | DEFINE_OBJECT_CLASS_PROPERTY_SCALAR_METHODS(uint32) |
| 2747 | DEFINE_OBJECT_CLASS_PROPERTY_SCALAR_METHODS(uint64) |
| 2748 | |
| 2749 | #undef OBJECT_CLASS_PROPERTY_SCALAR_GETTER |
| 2750 | #undef OBJECT_CLASS_PROPERTY_SCALAR_SETTER |
| 2751 | #undef DEFINE_OBJECT_CLASS_PROPERTY_SCALAR_METHODS |
| 2752 | |
| 2753 | |
| 2754 | static void property_class_get_bool_ptr(Object *obj, Visitor *v, |
| 2755 | const char *name, |
| 2756 | void *opaque, Error **errp) |
| 2757 | { |
| 2758 | bool value = *(bool *)object_class_prop_ptr(obj, (ptrdiff_t)opaque); |
| 2759 | |
| 2760 | visit_type_bool(v, name, &value, errp); |
| 2761 | } |
| 2762 | |
| 2763 | static void property_class_set_bool_ptr(Object *obj, Visitor *v, |
| 2764 | const char *name, |
| 2765 | void *opaque, Error **errp) |
| 2766 | { |
| 2767 | bool *field = (bool *)object_class_prop_ptr(obj, (ptrdiff_t)opaque); |
| 2768 | bool value; |
| 2769 | |
| 2770 | if (!visit_type_bool(v, name, &value, errp)) { |
| 2771 | return; |
| 2772 | } |
| 2773 | |
| 2774 | *field = value; |
| 2775 | } |
| 2776 | |
| 2777 | ObjectProperty * |
| 2778 | object_class_property_add_bool_ptr(ObjectClass *klass, const char *name, |
| 2779 | ptrdiff_t offset, |
| 2780 | ObjectPropertyFlags flags) |
| 2781 | { |
| 2782 | ObjectPropertyAccessor *getter = NULL; |
| 2783 | ObjectPropertyAccessor *setter = NULL; |
| 2784 | |
| 2785 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2786 | getter = property_class_get_bool_ptr; |
| 2787 | } |
| 2788 | |
| 2789 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2790 | setter = property_class_set_bool_ptr; |
| 2791 | } |
| 2792 | |
| 2793 | return object_class_property_add(klass, name, "bool", |
| 2794 | getter, setter, NULL, (void *)offset); |
| 2795 | } |
| 2796 | |
| 2797 | ObjectProperty * |
| 2798 | object_property_add_uint8_ptr(Object *obj, const char *name, |
| 2799 | const uint8_t *v, |
| 2800 | ObjectPropertyFlags flags) |
| 2801 | { |
| 2802 | ObjectPropertyAccessor *getter = NULL; |
| 2803 | ObjectPropertyAccessor *setter = NULL; |
| 2804 | |
| 2805 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2806 | getter = property_get_uint8_ptr; |
| 2807 | } |
| 2808 | |
| 2809 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2810 | setter = property_set_uint8_ptr; |
| 2811 | } |
| 2812 | |
| 2813 | return object_property_add(obj, name, "uint8", |
| 2814 | getter, setter, NULL, (void *)v); |
| 2815 | } |
| 2816 | |
| 2817 | ObjectProperty * |
| 2818 | object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name, |
| 2819 | ptrdiff_t offset, |
| 2820 | ObjectPropertyFlags flags) |
| 2821 | { |
| 2822 | ObjectPropertyAccessor *getter = NULL; |
| 2823 | ObjectPropertyAccessor *setter = NULL; |
| 2824 | |
| 2825 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2826 | getter = property_class_get_uint8_ptr; |
| 2827 | } |
| 2828 | |
| 2829 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2830 | setter = property_class_set_uint8_ptr; |
| 2831 | } |
| 2832 | |
| 2833 | return object_class_property_add(klass, name, "uint8", |
| 2834 | getter, setter, NULL, (void *)offset); |
| 2835 | } |
| 2836 | |
| 2837 | ObjectProperty * |
| 2838 | object_class_static_property_add_uint8_ptr(ObjectClass *klass, |
| 2839 | const char *name, |
| 2840 | const uint8_t *v, |
| 2841 | ObjectPropertyFlags flags) |
| 2842 | { |
| 2843 | ObjectPropertyAccessor *getter = NULL; |
| 2844 | ObjectPropertyAccessor *setter = NULL; |
| 2845 | |
| 2846 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2847 | getter = property_get_uint8_ptr; |
| 2848 | } |
| 2849 | |
| 2850 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2851 | setter = property_set_uint8_ptr; |
| 2852 | } |
| 2853 | |
| 2854 | return object_class_property_add(klass, name, "uint8", |
| 2855 | getter, setter, NULL, (void *)v); |
| 2856 | } |
| 2857 | |
| 2858 | ObjectProperty * |
| 2859 | object_property_add_uint16_ptr(Object *obj, const char *name, |
| 2860 | const uint16_t *v, |
| 2861 | ObjectPropertyFlags flags) |
| 2862 | { |
| 2863 | ObjectPropertyAccessor *getter = NULL; |
| 2864 | ObjectPropertyAccessor *setter = NULL; |
| 2865 | |
| 2866 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2867 | getter = property_get_uint16_ptr; |
| 2868 | } |
| 2869 | |
| 2870 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2871 | setter = property_set_uint16_ptr; |
| 2872 | } |
| 2873 | |
| 2874 | return object_property_add(obj, name, "uint16", |
| 2875 | getter, setter, NULL, (void *)v); |
| 2876 | } |
| 2877 | |
| 2878 | ObjectProperty * |
| 2879 | object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name, |
| 2880 | ptrdiff_t offset, |
| 2881 | ObjectPropertyFlags flags) |
| 2882 | { |
| 2883 | ObjectPropertyAccessor *getter = NULL; |
| 2884 | ObjectPropertyAccessor *setter = NULL; |
| 2885 | |
| 2886 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2887 | getter = property_class_get_uint16_ptr; |
| 2888 | } |
| 2889 | |
| 2890 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2891 | setter = property_class_set_uint16_ptr; |
| 2892 | } |
| 2893 | |
| 2894 | return object_class_property_add(klass, name, "uint16", |
| 2895 | getter, setter, NULL, (void *)offset); |
| 2896 | } |
| 2897 | |
| 2898 | ObjectProperty * |
| 2899 | object_class_static_property_add_uint16_ptr(ObjectClass *klass, |
| 2900 | const char *name, |
| 2901 | const uint16_t *v, |
| 2902 | ObjectPropertyFlags flags) |
| 2903 | { |
| 2904 | ObjectPropertyAccessor *getter = NULL; |
| 2905 | ObjectPropertyAccessor *setter = NULL; |
| 2906 | |
| 2907 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2908 | getter = property_get_uint16_ptr; |
| 2909 | } |
| 2910 | |
| 2911 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2912 | setter = property_set_uint16_ptr; |
| 2913 | } |
| 2914 | |
| 2915 | return object_class_property_add(klass, name, "uint16", |
| 2916 | getter, setter, NULL, (void *)v); |
| 2917 | } |
| 2918 | |
| 2919 | ObjectProperty * |
| 2920 | object_property_add_uint32_ptr(Object *obj, const char *name, |
| 2921 | const uint32_t *v, |
| 2922 | ObjectPropertyFlags flags) |
| 2923 | { |
| 2924 | ObjectPropertyAccessor *getter = NULL; |
| 2925 | ObjectPropertyAccessor *setter = NULL; |
| 2926 | |
| 2927 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2928 | getter = property_get_uint32_ptr; |
| 2929 | } |
| 2930 | |
| 2931 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2932 | setter = property_set_uint32_ptr; |
| 2933 | } |
| 2934 | |
| 2935 | return object_property_add(obj, name, "uint32", |
| 2936 | getter, setter, NULL, (void *)v); |
| 2937 | } |
| 2938 | |
| 2939 | ObjectProperty * |
| 2940 | object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name, |
| 2941 | ptrdiff_t offset, |
| 2942 | ObjectPropertyFlags flags) |
| 2943 | { |
| 2944 | ObjectPropertyAccessor *getter = NULL; |
| 2945 | ObjectPropertyAccessor *setter = NULL; |
| 2946 | |
| 2947 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2948 | getter = property_class_get_uint32_ptr; |
| 2949 | } |
| 2950 | |
| 2951 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2952 | setter = property_class_set_uint32_ptr; |
| 2953 | } |
| 2954 | |
| 2955 | return object_class_property_add(klass, name, "uint32", |
| 2956 | getter, setter, NULL, (void *)offset); |
| 2957 | } |
| 2958 | |
| 2959 | ObjectProperty * |
| 2960 | object_class_static_property_add_uint32_ptr(ObjectClass *klass, |
| 2961 | const char *name, |
| 2962 | const uint32_t *v, |
| 2963 | ObjectPropertyFlags flags) |
| 2964 | { |
| 2965 | ObjectPropertyAccessor *getter = NULL; |
| 2966 | ObjectPropertyAccessor *setter = NULL; |
| 2967 | |
| 2968 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2969 | getter = property_get_uint32_ptr; |
| 2970 | } |
| 2971 | |
| 2972 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2973 | setter = property_set_uint32_ptr; |
| 2974 | } |
| 2975 | |
| 2976 | return object_class_property_add(klass, name, "uint32", |
| 2977 | getter, setter, NULL, (void *)v); |
| 2978 | } |
| 2979 | |
| 2980 | ObjectProperty * |
| 2981 | object_property_add_uint64_ptr(Object *obj, const char *name, |
| 2982 | const uint64_t *v, |
| 2983 | ObjectPropertyFlags flags) |
| 2984 | { |
| 2985 | ObjectPropertyAccessor *getter = NULL; |
| 2986 | ObjectPropertyAccessor *setter = NULL; |
| 2987 | |
| 2988 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 2989 | getter = property_get_uint64_ptr; |
| 2990 | } |
| 2991 | |
| 2992 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 2993 | setter = property_set_uint64_ptr; |
| 2994 | } |
| 2995 | |
| 2996 | return object_property_add(obj, name, "uint64", |
| 2997 | getter, setter, NULL, (void *)v); |
| 2998 | } |
| 2999 | |
| 3000 | ObjectProperty * |
| 3001 | object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name, |
| 3002 | ptrdiff_t offset, |
| 3003 | ObjectPropertyFlags flags) |
| 3004 | { |
| 3005 | ObjectPropertyAccessor *getter = NULL; |
| 3006 | ObjectPropertyAccessor *setter = NULL; |
| 3007 | |
| 3008 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 3009 | getter = property_class_get_uint64_ptr; |
| 3010 | } |
| 3011 | |
| 3012 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 3013 | setter = property_class_set_uint64_ptr; |
| 3014 | } |
| 3015 | |
| 3016 | return object_class_property_add(klass, name, "uint64", |
| 3017 | getter, setter, NULL, (void *)offset); |
| 3018 | } |
| 3019 | |
| 3020 | ObjectProperty * |
| 3021 | object_class_static_property_add_uint64_ptr(ObjectClass *klass, |
| 3022 | const char *name, |
| 3023 | const uint64_t *v, |
| 3024 | ObjectPropertyFlags flags) |
| 3025 | { |
| 3026 | ObjectPropertyAccessor *getter = NULL; |
| 3027 | ObjectPropertyAccessor *setter = NULL; |
| 3028 | |
| 3029 | if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) { |
| 3030 | getter = property_get_uint64_ptr; |
| 3031 | } |
| 3032 | |
| 3033 | if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) { |
| 3034 | setter = property_set_uint64_ptr; |
| 3035 | } |
| 3036 | |
| 3037 | return object_class_property_add(klass, name, "uint64", |
| 3038 | getter, setter, NULL, (void *)v); |
| 3039 | } |
| 3040 | |
| 3041 | typedef struct { |
| 3042 | Object *target_obj; |
| 3043 | char *target_name; |
| 3044 | } AliasProperty; |
| 3045 | |
| 3046 | static void property_get_alias(Object *obj, Visitor *v, const char *name, |
| 3047 | void *opaque, Error **errp) |
| 3048 | { |
| 3049 | AliasProperty *prop = opaque; |
| 3050 | Visitor *alias_v = visitor_forward_field(v, prop->target_name, name); |
| 3051 | |
| 3052 | object_property_get(prop->target_obj, prop->target_name, alias_v, errp); |
| 3053 | visit_free(alias_v); |
| 3054 | } |
| 3055 | |
| 3056 | static void property_set_alias(Object *obj, Visitor *v, const char *name, |
| 3057 | void *opaque, Error **errp) |
| 3058 | { |
| 3059 | AliasProperty *prop = opaque; |
| 3060 | Visitor *alias_v = visitor_forward_field(v, prop->target_name, name); |
| 3061 | |
| 3062 | object_property_set(prop->target_obj, prop->target_name, alias_v, errp); |
| 3063 | visit_free(alias_v); |
| 3064 | } |
| 3065 | |
| 3066 | static Object *property_resolve_alias(Object *obj, void *opaque, |
| 3067 | const char *part) |
| 3068 | { |
| 3069 | AliasProperty *prop = opaque; |
| 3070 | |
| 3071 | return object_resolve_path_component(prop->target_obj, prop->target_name); |
| 3072 | } |
| 3073 | |
| 3074 | static void property_release_alias(Object *obj, const char *name, void *opaque) |
| 3075 | { |
| 3076 | AliasProperty *prop = opaque; |
| 3077 | |
| 3078 | g_free(prop->target_name); |
| 3079 | g_free(prop); |
| 3080 | } |
| 3081 | |
| 3082 | ObjectProperty * |
| 3083 | object_property_add_alias(Object *obj, const char *name, |
| 3084 | Object *target_obj, const char *target_name) |
| 3085 | { |
| 3086 | AliasProperty *prop; |
| 3087 | ObjectProperty *op; |
| 3088 | ObjectProperty *target_prop; |
| 3089 | g_autofree char *prop_type = NULL; |
| 3090 | |
| 3091 | target_prop = object_property_find_err(target_obj, target_name, |
| 3092 | &error_abort); |
| 3093 | |
| 3094 | if (object_property_is_child(target_prop)) { |
| 3095 | prop_type = g_strdup_printf("link%s", |
| 3096 | target_prop->type + strlen("child")); |
| 3097 | } else { |
| 3098 | prop_type = g_strdup(target_prop->type); |
| 3099 | } |
| 3100 | |
| 3101 | prop = g_malloc(sizeof(*prop)); |
| 3102 | prop->target_obj = target_obj; |
| 3103 | prop->target_name = g_strdup(target_name); |
| 3104 | |
| 3105 | op = object_property_add(obj, name, prop_type, |
| 3106 | property_get_alias, |
| 3107 | property_set_alias, |
| 3108 | property_release_alias, |
| 3109 | prop); |
| 3110 | op->resolve = property_resolve_alias; |
| 3111 | if (target_prop->defval) { |
| 3112 | op->defval = qobject_ref(target_prop->defval); |
| 3113 | } |
| 3114 | |
| 3115 | object_property_set_description(obj, op->name, |
| 3116 | target_prop->description); |
| 3117 | return op; |
| 3118 | } |
| 3119 | |
| 3120 | void object_property_set_description(Object *obj, const char *name, |
| 3121 | const char *description) |
| 3122 | { |
| 3123 | ObjectProperty *op; |
| 3124 | |
| 3125 | op = object_property_find_err(obj, name, &error_abort); |
| 3126 | g_free(op->description); |
| 3127 | op->description = g_strdup(description); |
| 3128 | } |
| 3129 | |
| 3130 | void object_class_property_set_description(ObjectClass *klass, |
| 3131 | const char *name, |
| 3132 | const char *description) |
| 3133 | { |
| 3134 | ObjectProperty *op; |
| 3135 | |
| 3136 | op = g_hash_table_lookup(klass->properties, name); |
| 3137 | g_free(op->description); |
| 3138 | op->description = g_strdup(description); |
| 3139 | } |
| 3140 | |
| 3141 | static void object_class_init(ObjectClass *klass, const void *data) |
| 3142 | { |
| 3143 | object_class_property_add_str(klass, "type", object_get_type, |
| 3144 | NULL); |
| 3145 | } |
| 3146 | |
| 3147 | static void __attribute__((constructor)) register_types(void) |
| 3148 | { |
| 3149 | static const TypeInfo interface_info = { |
| 3150 | .name = TYPE_INTERFACE, |
| 3151 | .class_size = sizeof(InterfaceClass), |
| 3152 | .abstract = true, |
| 3153 | }; |
| 3154 | |
| 3155 | static const TypeInfo object_info = { |
| 3156 | .name = TYPE_OBJECT, |
| 3157 | .instance_size = sizeof(Object), |
| 3158 | .class_init = object_class_init, |
| 3159 | .abstract = true, |
| 3160 | }; |
| 3161 | |
| 3162 | type_table = g_hash_table_new(g_str_hash, g_str_equal); |
| 3163 | type_interface = type_register_internal(&interface_info); |
| 3164 | type_register_internal(&object_info); |
| 3165 | } |