qmp.c

   1 /*
   2  * QEMU Management Protocol
   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.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  * Contributions after 2012-01-13 are licensed under the terms of the
  13  * GNU GPL, version 2 or (at your option) any later version.
  14  */
  15
  16 #include "qemu/osdep.h"
  17 #include "qemu-version.h"
  18 #include "qemu/cutils.h"
  19 #include "qemu/option.h"
  20 #include "monitor/monitor.h"
  21 #include "sysemu/sysemu.h"
  22 #include "qemu/config-file.h"
  23 #include "qemu/uuid.h"
  24 #include "chardev/char.h"
  25 #include "ui/qemu-spice.h"
  26 #include "ui/vnc.h"
  27 #include "sysemu/kvm.h"
  28 #include "sysemu/arch_init.h"
  29 #include "hw/qdev.h"
  30 #include "sysemu/blockdev.h"
  31 #include "sysemu/block-backend.h"
  32 #include "qom/qom-qobject.h"
  33 #include "qapi/error.h"
  34 #include "qapi/qapi-commands-block-core.h"
  35 #include "qapi/qapi-commands-misc.h"
  36 #include "qapi/qapi-commands-ui.h"
  37 #include "qapi/qmp/qdict.h"
  38 #include "qapi/qmp/qerror.h"
  39 #include "qapi/qobject-input-visitor.h"
  40 #include "hw/boards.h"
  41 #include "qom/object_interfaces.h"
  42 #include "hw/mem/memory-device.h"
  43 #include "hw/acpi/acpi_dev_interface.h"
  44
  45 NameInfo *qmp_query_name(Error **errp)
  46 {
  47     NameInfo *info = g_malloc0(sizeof(*info));
  48
  49     if (qemu_name) {
  50         info->has_name = true;
  51         info->name = g_strdup(qemu_name);
  52     }
  53
  54     return info;
  55 }
  56
  57 VersionInfo *qmp_query_version(Error **errp)
  58 {
  59     VersionInfo *info = g_new0(VersionInfo, 1);
  60
  61     info->qemu = g_new0(VersionTriple, 1);
  62     info->qemu->major = QEMU_VERSION_MAJOR;
  63     info->qemu->minor = QEMU_VERSION_MINOR;
  64     info->qemu->micro = QEMU_VERSION_MICRO;
  65     info->package = g_strdup(QEMU_PKGVERSION);
  66
  67     return info;
  68 }
  69
  70 KvmInfo *qmp_query_kvm(Error **errp)
  71 {
  72     KvmInfo *info = g_malloc0(sizeof(*info));
  73
  74     info->enabled = kvm_enabled();
  75     info->present = kvm_available();
  76
  77     return info;
  78 }
  79
  80 UuidInfo *qmp_query_uuid(Error **errp)
  81 {
  82     UuidInfo *info = g_malloc0(sizeof(*info));
  83
  84     info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid);
  85     return info;
  86 }
  87
  88 void qmp_quit(Error **errp)
  89 {
  90     no_shutdown = 0;
  91     qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_QMP);
  92 }
  93
  94 void qmp_stop(Error **errp)
  95 {
  96     /* if there is a dump in background, we should wait until the dump
  97      * finished */
  98     if (dump_in_progress()) {
  99         error_setg(errp, "There is a dump in process, please wait.");
 100         return;
 101     }
 102
 103     if (runstate_check(RUN_STATE_INMIGRATE)) {
 104         autostart = 0;
 105     } else {
 106         vm_stop(RUN_STATE_PAUSED);
 107     }
 108 }
 109
 110 void qmp_system_reset(Error **errp)
 111 {
 112     qemu_system_reset_request(SHUTDOWN_CAUSE_HOST_QMP);
 113 }
 114
 115 void qmp_system_powerdown(Error **erp)
 116 {
 117     qemu_system_powerdown_request();
 118 }
 119
 120 void qmp_cpu_add(int64_t id, Error **errp)
 121 {
 122     MachineClass *mc;
 123
 124     mc = MACHINE_GET_CLASS(current_machine);
 125     if (mc->hot_add_cpu) {
 126         mc->hot_add_cpu(id, errp);
 127     } else {
 128         error_setg(errp, "Not supported");
 129     }
 130 }
 131
 132 #ifndef CONFIG_VNC
 133 /* If VNC support is enabled, the "true" query-vnc command is
 134    defined in the VNC subsystem */
 135 VncInfo *qmp_query_vnc(Error **errp)
 136 {
 137     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
 138     return NULL;
 139 };
 140
 141 VncInfo2List *qmp_query_vnc_servers(Error **errp)
 142 {
 143     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
 144     return NULL;
 145 };
 146 #endif
 147
 148 #ifndef CONFIG_SPICE
 149 /*
 150  * qmp_unregister_commands_hack() ensures that QMP command query-spice
 151  * exists only #ifdef CONFIG_SPICE.  Necessary for an accurate
 152  * query-commands result.  However, the QAPI schema is blissfully
 153  * unaware of that, and the QAPI code generator happily generates a
 154  * dead qmp_marshal_query_spice() that calls qmp_query_spice().
 155  * Provide it one, or else linking fails.  FIXME Educate the QAPI
 156  * schema on CONFIG_SPICE.
 157  */
 158 SpiceInfo *qmp_query_spice(Error **errp)
 159 {
 160     abort();
 161 };
 162 #endif
 163
 164 void qmp_cont(Error **errp)
 165 {
 166     BlockBackend *blk;
 167     Error *local_err = NULL;
 168
 169     /* if there is a dump in background, we should wait until the dump
 170      * finished */
 171     if (dump_in_progress()) {
 172         error_setg(errp, "There is a dump in process, please wait.");
 173         return;
 174     }
 175
 176     if (runstate_needs_reset()) {
 177         error_setg(errp, "Resetting the Virtual Machine is required");
 178         return;
 179     } else if (runstate_check(RUN_STATE_SUSPENDED)) {
 180         return;
 181     }
 182
 183     for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
 184         blk_iostatus_reset(blk);
 185     }
 186
 187     /* Continuing after completed migration. Images have been inactivated to
 188      * allow the destination to take control. Need to get control back now.
 189      *
 190      * If there are no inactive block nodes (e.g. because the VM was just
 191      * paused rather than completing a migration), bdrv_inactivate_all() simply
 192      * doesn't do anything. */
 193     bdrv_invalidate_cache_all(&local_err);
 194     if (local_err) {
 195         error_propagate(errp, local_err);
 196         return;
 197     }
 198
 199     if (runstate_check(RUN_STATE_INMIGRATE)) {
 200         autostart = 1;
 201     } else {
 202         vm_start();
 203     }
 204 }
 205
 206 void qmp_system_wakeup(Error **errp)
 207 {
 208     qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
 209 }
 210
 211 ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
 212 {
 213     Object *obj;
 214     bool ambiguous = false;
 215     ObjectPropertyInfoList *props = NULL;
 216     ObjectProperty *prop;
 217     ObjectPropertyIterator iter;
 218
 219     obj = object_resolve_path(path, &ambiguous);
 220     if (obj == NULL) {
 221         if (ambiguous) {
 222             error_setg(errp, "Path '%s' is ambiguous", path);
 223         } else {
 224             error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 225                       "Device '%s' not found", path);
 226         }
 227         return NULL;
 228     }
 229
 230     object_property_iter_init(&iter, obj);
 231     while ((prop = object_property_iter_next(&iter))) {
 232         ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));
 233
 234         entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
 235         entry->next = props;
 236         props = entry;
 237
 238         entry->value->name = g_strdup(prop->name);
 239         entry->value->type = g_strdup(prop->type);
 240     }
 241
 242     return props;
 243 }
 244
 245 void qmp_qom_set(const char *path, const char *property, QObject *value,
 246                  Error **errp)
 247 {
 248     Object *obj;
 249
 250     obj = object_resolve_path(path, NULL);
 251     if (!obj) {
 252         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 253                   "Device '%s' not found", path);
 254         return;
 255     }
 256
 257     object_property_set_qobject(obj, value, property, errp);
 258 }
 259
 260 QObject *qmp_qom_get(const char *path, const char *property, Error **errp)
 261 {
 262     Object *obj;
 263
 264     obj = object_resolve_path(path, NULL);
 265     if (!obj) {
 266         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 267                   "Device '%s' not found", path);
 268         return NULL;
 269     }
 270
 271     return object_property_get_qobject(obj, property, errp);
 272 }
 273
 274 void qmp_set_password(const char *protocol, const char *password,
 275                       bool has_connected, const char *connected, Error **errp)
 276 {
 277     int disconnect_if_connected = 0;
 278     int fail_if_connected = 0;
 279     int rc;
 280
 281     if (has_connected) {
 282         if (strcmp(connected, "fail") == 0) {
 283             fail_if_connected = 1;
 284         } else if (strcmp(connected, "disconnect") == 0) {
 285             disconnect_if_connected = 1;
 286         } else if (strcmp(connected, "keep") == 0) {
 287             /* nothing */
 288         } else {
 289             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
 290             return;
 291         }
 292     }
 293
 294     if (strcmp(protocol, "spice") == 0) {
 295         if (!qemu_using_spice(errp)) {
 296             return;
 297         }
 298         rc = qemu_spice_set_passwd(password, fail_if_connected,
 299                                    disconnect_if_connected);
 300         if (rc != 0) {
 301             error_setg(errp, QERR_SET_PASSWD_FAILED);
 302         }
 303         return;
 304     }
 305
 306     if (strcmp(protocol, "vnc") == 0) {
 307         if (fail_if_connected || disconnect_if_connected) {
 308             /* vnc supports "connected=keep" only */
 309             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
 310             return;
 311         }
 312         /* Note that setting an empty password will not disable login through
 313          * this interface. */
 314         rc = vnc_display_password(NULL, password);
 315         if (rc < 0) {
 316             error_setg(errp, QERR_SET_PASSWD_FAILED);
 317         }
 318         return;
 319     }
 320
 321     error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
 322 }
 323
 324 void qmp_expire_password(const char *protocol, const char *whenstr,
 325                          Error **errp)
 326 {
 327     time_t when;
 328     int rc;
 329
 330     if (strcmp(whenstr, "now") == 0) {
 331         when = 0;
 332     } else if (strcmp(whenstr, "never") == 0) {
 333         when = TIME_MAX;
 334     } else if (whenstr[0] == '+') {
 335         when = time(NULL) + strtoull(whenstr+1, NULL, 10);
 336     } else {
 337         when = strtoull(whenstr, NULL, 10);
 338     }
 339
 340     if (strcmp(protocol, "spice") == 0) {
 341         if (!qemu_using_spice(errp)) {
 342             return;
 343         }
 344         rc = qemu_spice_set_pw_expire(when);
 345         if (rc != 0) {
 346             error_setg(errp, QERR_SET_PASSWD_FAILED);
 347         }
 348         return;
 349     }
 350
 351     if (strcmp(protocol, "vnc") == 0) {
 352         rc = vnc_display_pw_expire(NULL, when);
 353         if (rc != 0) {
 354             error_setg(errp, QERR_SET_PASSWD_FAILED);
 355         }
 356         return;
 357     }
 358
 359     error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
 360 }
 361
 362 #ifdef CONFIG_VNC
 363 void qmp_change_vnc_password(const char *password, Error **errp)
 364 {
 365     if (vnc_display_password(NULL, password) < 0) {
 366         error_setg(errp, QERR_SET_PASSWD_FAILED);
 367     }
 368 }
 369
 370 static void qmp_change_vnc_listen(const char *target, Error **errp)
 371 {
 372     QemuOptsList *olist = qemu_find_opts("vnc");
 373     QemuOpts *opts;
 374
 375     if (strstr(target, "id=")) {
 376         error_setg(errp, "id not supported");
 377         return;
 378     }
 379
 380     opts = qemu_opts_find(olist, "default");
 381     if (opts) {
 382         qemu_opts_del(opts);
 383     }
 384     opts = vnc_parse(target, errp);
 385     if (!opts) {
 386         return;
 387     }
 388
 389     vnc_display_open("default", errp);
 390 }
 391
 392 static void qmp_change_vnc(const char *target, bool has_arg, const char *arg,
 393                            Error **errp)
 394 {
 395     if (strcmp(target, "passwd") == 0 || strcmp(target, "password") == 0) {
 396         if (!has_arg) {
 397             error_setg(errp, QERR_MISSING_PARAMETER, "password");
 398         } else {
 399             qmp_change_vnc_password(arg, errp);
 400         }
 401     } else {
 402         qmp_change_vnc_listen(target, errp);
 403     }
 404 }
 405 #else
 406 void qmp_change_vnc_password(const char *password, Error **errp)
 407 {
 408     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
 409 }
 410 static void qmp_change_vnc(const char *target, bool has_arg, const char *arg,
 411                            Error **errp)
 412 {
 413     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
 414 }
 415 #endif /* !CONFIG_VNC */
 416
 417 void qmp_change(const char *device, const char *target,
 418                 bool has_arg, const char *arg, Error **errp)
 419 {
 420     if (strcmp(device, "vnc") == 0) {
 421         qmp_change_vnc(target, has_arg, arg, errp);
 422     } else {
 423         qmp_blockdev_change_medium(true, device, false, NULL, target,
 424                                    has_arg, arg, false, 0, errp);
 425     }
 426 }
 427
 428 static void qom_list_types_tramp(ObjectClass *klass, void *data)
 429 {
 430     ObjectTypeInfoList *e, **pret = data;
 431     ObjectTypeInfo *info;
 432     ObjectClass *parent = object_class_get_parent(klass);
 433
 434     info = g_malloc0(sizeof(*info));
 435     info->name = g_strdup(object_class_get_name(klass));
 436     info->has_abstract = info->abstract = object_class_is_abstract(klass);
 437     if (parent) {
 438         info->has_parent = true;
 439         info->parent = g_strdup(object_class_get_name(parent));
 440     }
 441
 442     e = g_malloc0(sizeof(*e));
 443     e->value = info;
 444     e->next = *pret;
 445     *pret = e;
 446 }
 447
 448 ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
 449                                        const char *implements,
 450                                        bool has_abstract,
 451                                        bool abstract,
 452                                        Error **errp)
 453 {
 454     ObjectTypeInfoList *ret = NULL;
 455
 456     object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);
 457
 458     return ret;
 459 }
 460
 461 /* Return a DevicePropertyInfo for a qdev property.
 462  *
 463  * If a qdev property with the given name does not exist, use the given default
 464  * type.  If the qdev property info should not be shown, return NULL.
 465  *
 466  * The caller must free the return value.
 467  */
 468 static ObjectPropertyInfo *make_device_property_info(ObjectClass *klass,
 469                                                   const char *name,
 470                                                   const char *default_type,
 471                                                   const char *description)
 472 {
 473     ObjectPropertyInfo *info;
 474     Property *prop;
 475
 476     do {
 477         for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
 478             if (strcmp(name, prop->name) != 0) {
 479                 continue;
 480             }
 481
 482             /*
 483              * TODO Properties without a parser are just for dirty hacks.
 484              * qdev_prop_ptr is the only such PropertyInfo.  It's marked
 485              * for removal.  This conditional should be removed along with
 486              * it.
 487              */
 488             if (!prop->info->set && !prop->info->create) {
 489                 return NULL;           /* no way to set it, don't show */
 490             }
 491
 492             info = g_malloc0(sizeof(*info));
 493             info->name = g_strdup(prop->name);
 494             info->type = default_type ? g_strdup(default_type)
 495                                       : g_strdup(prop->info->name);
 496             info->has_description = !!prop->info->description;
 497             info->description = g_strdup(prop->info->description);
 498             return info;
 499         }
 500         klass = object_class_get_parent(klass);
 501     } while (klass != object_class_by_name(TYPE_DEVICE));
 502
 503     /* Not a qdev property, use the default type */
 504     info = g_malloc0(sizeof(*info));
 505     info->name = g_strdup(name);
 506     info->type = g_strdup(default_type);
 507     info->has_description = !!description;
 508     info->description = g_strdup(description);
 509
 510     return info;
 511 }
 512
 513 ObjectPropertyInfoList *qmp_device_list_properties(const char *typename,
 514                                                 Error **errp)
 515 {
 516     ObjectClass *klass;
 517     Object *obj;
 518     ObjectProperty *prop;
 519     ObjectPropertyIterator iter;
 520     ObjectPropertyInfoList *prop_list = NULL;
 521
 522     klass = object_class_by_name(typename);
 523     if (klass == NULL) {
 524         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 525                   "Device '%s' not found", typename);
 526         return NULL;
 527     }
 528
 529     klass = object_class_dynamic_cast(klass, TYPE_DEVICE);
 530     if (klass == NULL) {
 531         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_DEVICE);
 532         return NULL;
 533     }
 534
 535     if (object_class_is_abstract(klass)) {
 536         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
 537                    "non-abstract device type");
 538         return NULL;
 539     }
 540
 541     obj = object_new(typename);
 542
 543     object_property_iter_init(&iter, obj);
 544     while ((prop = object_property_iter_next(&iter))) {
 545         ObjectPropertyInfo *info;
 546         ObjectPropertyInfoList *entry;
 547
 548         /* Skip Object and DeviceState properties */
 549         if (strcmp(prop->name, "type") == 0 ||
 550             strcmp(prop->name, "realized") == 0 ||
 551             strcmp(prop->name, "hotpluggable") == 0 ||
 552             strcmp(prop->name, "hotplugged") == 0 ||
 553             strcmp(prop->name, "parent_bus") == 0) {
 554             continue;
 555         }
 556
 557         /* Skip legacy properties since they are just string versions of
 558          * properties that we already list.
 559          */
 560         if (strstart(prop->name, "legacy-", NULL)) {
 561             continue;
 562         }
 563
 564         info = make_device_property_info(klass, prop->name, prop->type,
 565                                          prop->description);
 566         if (!info) {
 567             continue;
 568         }
 569
 570         entry = g_malloc0(sizeof(*entry));
 571         entry->value = info;
 572         entry->next = prop_list;
 573         prop_list = entry;
 574     }
 575
 576     object_unref(obj);
 577
 578     return prop_list;
 579 }
 580
 581 ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
 582                                              Error **errp)
 583 {
 584     ObjectClass *klass;
 585     Object *obj = NULL;
 586     ObjectProperty *prop;
 587     ObjectPropertyIterator iter;
 588     ObjectPropertyInfoList *prop_list = NULL;
 589
 590     klass = object_class_by_name(typename);
 591     if (klass == NULL) {
 592         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 593                   "Class '%s' not found", typename);
 594         return NULL;
 595     }
 596
 597     klass = object_class_dynamic_cast(klass, TYPE_OBJECT);
 598     if (klass == NULL) {
 599         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_OBJECT);
 600         return NULL;
 601     }
 602
 603     if (object_class_is_abstract(klass)) {
 604         object_class_property_iter_init(&iter, klass);
 605     } else {
 606         obj = object_new(typename);
 607         object_property_iter_init(&iter, obj);
 608     }
 609     while ((prop = object_property_iter_next(&iter))) {
 610         ObjectPropertyInfo *info;
 611         ObjectPropertyInfoList *entry;
 612
 613         info = g_malloc0(sizeof(*info));
 614         info->name = g_strdup(prop->name);
 615         info->type = g_strdup(prop->type);
 616         info->has_description = !!prop->description;
 617         info->description = g_strdup(prop->description);
 618
 619         entry = g_malloc0(sizeof(*entry));
 620         entry->value = info;
 621         entry->next = prop_list;
 622         prop_list = entry;
 623     }
 624
 625     object_unref(obj);
 626
 627     return prop_list;
 628 }
 629
 630 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 631 {
 632     return arch_query_cpu_definitions(errp);
 633 }
 634
 635 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
 636                                                      CpuModelInfo *model,
 637                                                      Error **errp)
 638 {
 639     return arch_query_cpu_model_expansion(type, model, errp);
 640 }
 641
 642 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *modela,
 643                                                     CpuModelInfo *modelb,
 644                                                     Error **errp)
 645 {
 646     return arch_query_cpu_model_comparison(modela, modelb, errp);
 647 }
 648
 649 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *modela,
 650                                                    CpuModelInfo *modelb,
 651                                                    Error **errp)
 652 {
 653     return arch_query_cpu_model_baseline(modela, modelb, errp);
 654 }
 655
 656 void qmp_add_client(const char *protocol, const char *fdname,
 657                     bool has_skipauth, bool skipauth, bool has_tls, bool tls,
 658                     Error **errp)
 659 {
 660     Chardev *s;
 661     int fd;
 662
 663     fd = monitor_get_fd(cur_mon, fdname, errp);
 664     if (fd < 0) {
 665         return;
 666     }
 667
 668     if (strcmp(protocol, "spice") == 0) {
 669         if (!qemu_using_spice(errp)) {
 670             close(fd);
 671             return;
 672         }
 673         skipauth = has_skipauth ? skipauth : false;
 674         tls = has_tls ? tls : false;
 675         if (qemu_spice_display_add_client(fd, skipauth, tls) < 0) {
 676             error_setg(errp, "spice failed to add client");
 677             close(fd);
 678         }
 679         return;
 680 #ifdef CONFIG_VNC
 681     } else if (strcmp(protocol, "vnc") == 0) {
 682         skipauth = has_skipauth ? skipauth : false;
 683         vnc_display_add_client(NULL, fd, skipauth);
 684         return;
 685 #endif
 686     } else if ((s = qemu_chr_find(protocol)) != NULL) {
 687         if (qemu_chr_add_client(s, fd) < 0) {
 688             error_setg(errp, "failed to add client");
 689             close(fd);
 690             return;
 691         }
 692         return;
 693     }
 694
 695     error_setg(errp, "protocol '%s' is invalid", protocol);
 696     close(fd);
 697 }
 698
 699
 700 void qmp_object_add(const char *type, const char *id,
 701                     bool has_props, QObject *props, Error **errp)
 702 {
 703     QDict *pdict;
 704     Visitor *v;
 705     Object *obj;
 706
 707     if (props) {
 708         pdict = qobject_to(QDict, props);
 709         if (!pdict) {
 710             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 711             return;
 712         }
 713         qobject_ref(pdict);
 714     } else {
 715         pdict = qdict_new();
 716     }
 717
 718     v = qobject_input_visitor_new(QOBJECT(pdict));
 719     obj = user_creatable_add_type(type, id, pdict, v, errp);
 720     visit_free(v);
 721     if (obj) {
 722         object_unref(obj);
 723     }
 724     qobject_unref(pdict);
 725 }
 726
 727 void qmp_object_del(const char *id, Error **errp)
 728 {
 729     user_creatable_del(id, errp);
 730 }
 731
 732 MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp)
 733 {
 734     return qmp_memory_device_list();
 735 }
 736
 737 ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp)
 738 {
 739     bool ambig;
 740     ACPIOSTInfoList *head = NULL;
 741     ACPIOSTInfoList **prev = &head;
 742     Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig);
 743
 744     if (obj) {
 745         AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
 746         AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);
 747
 748         adevc->ospm_status(adev, &prev);
 749     } else {
 750         error_setg(errp, "command is not supported, missing ACPI device");
 751     }
 752
 753     return head;
 754 }
 755
 756 MemoryInfo *qmp_query_memory_size_summary(Error **errp)
 757 {
 758     MemoryInfo *mem_info = g_malloc0(sizeof(MemoryInfo));
 759
 760     mem_info->base_memory = ram_size;
 761
 762     mem_info->plugged_memory = get_plugged_memory_size();
 763     mem_info->has_plugged_memory =
 764         mem_info->plugged_memory != (uint64_t)-1;
 765
 766     return mem_info;
 767 }
 768
 769 static QemuSemaphore x_oob_test_sem;
 770
 771 static void __attribute__((constructor)) x_oob_test_init(void)
 772 {
 773     qemu_sem_init(&x_oob_test_sem, 0);
 774 }
 775
 776 void qmp_x_oob_test(bool lock, Error **errp)
 777 {
 778     if (lock) {
 779         qemu_sem_wait(&x_oob_test_sem);
 780     } else {
 781         qemu_sem_post(&x_oob_test_sem);
 782     }
 783 }