qmp.c - qemu - Git at Google

 /*
  * QEMU Management Protocol
  *
  * Copyright IBM, Corp. 2011
  *
  * Authors:
  *  Anthony Liguori   <aliguori@us.ibm.com>
  *
  * This work is licensed under the terms of the GNU GPL, version 2.  See
  * the COPYING file in the top-level directory.
  *
  * Contributions after 2012-01-13 are licensed under the terms of the
  * GNU GPL, version 2 or (at your option) any later version.
  */

 #include "qemu/osdep.h"
 #include "qemu-version.h"
 #include "qemu/cutils.h"
 #include "monitor/monitor.h"
 #include "sysemu/sysemu.h"
 #include "qemu/uuid.h"
 #include "qmp-commands.h"
 #include "sysemu/char.h"
 #include "ui/qemu-spice.h"
 #include "ui/vnc.h"
 #include "sysemu/kvm.h"
 #include "sysemu/arch_init.h"
 #include "hw/qdev.h"
 #include "sysemu/blockdev.h"
 #include "sysemu/block-backend.h"
 #include "qom/qom-qobject.h"
 #include "qapi/qmp/qerror.h"
 #include "qapi/qmp/qobject.h"
 #include "qapi/qmp-input-visitor.h"
 #include "hw/boards.h"
 #include "qom/object_interfaces.h"
 #include "hw/mem/pc-dimm.h"
 #include "hw/acpi/acpi_dev_interface.h"
 #include "qemu/uuid.h"

 NameInfo *qmp_query_name(Error **errp)
 {
     NameInfo *info = g_malloc0(sizeof(*info));

     if (qemu_name) {
         info->has_name = true;
         info->name = g_strdup(qemu_name);
     }

     return info;
 }

 VersionInfo *qmp_query_version(Error **errp)
 {
     VersionInfo *info = g_new0(VersionInfo, 1);

     info->qemu = g_new0(VersionTriple, 1);
     info->qemu->major = QEMU_VERSION_MAJOR;
     info->qemu->minor = QEMU_VERSION_MINOR;
     info->qemu->micro = QEMU_VERSION_MICRO;
     info->package = g_strdup(QEMU_PKGVERSION);

     return info;
 }

 KvmInfo *qmp_query_kvm(Error **errp)
 {
     KvmInfo *info = g_malloc0(sizeof(*info));

     info->enabled = kvm_enabled();
     info->present = kvm_available();

     return info;
 }

 UuidInfo *qmp_query_uuid(Error **errp)
 {
     UuidInfo *info = g_malloc0(sizeof(*info));

     info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid);
     return info;
 }

 void qmp_quit(Error **errp)
 {
     no_shutdown = 0;
     qemu_system_shutdown_request();
 }

 void qmp_stop(Error **errp)
 {
     /* if there is a dump in background, we should wait until the dump
      * finished */
     if (dump_in_progress()) {
         error_setg(errp, "There is a dump in process, please wait.");
         return;
     }

     if (runstate_check(RUN_STATE_INMIGRATE)) {
         autostart = 0;
     } else {
         vm_stop(RUN_STATE_PAUSED);
     }
 }

 void qmp_system_reset(Error **errp)
 {
     qemu_system_reset_request();
 }

 void qmp_system_powerdown(Error **erp)
 {
     qemu_system_powerdown_request();
 }

 void qmp_cpu(int64_t index, Error **errp)
 {
     /* Just do nothing */
 }

 void qmp_cpu_add(int64_t id, Error **errp)
 {
     MachineClass *mc;

     mc = MACHINE_GET_CLASS(current_machine);
     if (mc->hot_add_cpu) {
         mc->hot_add_cpu(id, errp);
     } else {
         error_setg(errp, "Not supported");
     }
 }

 #ifndef CONFIG_VNC
 /* If VNC support is enabled, the "true" query-vnc command is
    defined in the VNC subsystem */
 VncInfo *qmp_query_vnc(Error **errp)
 {
     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
     return NULL;
 };

 VncInfo2List *qmp_query_vnc_servers(Error **errp)
 {
     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
     return NULL;
 };
 #endif

 #ifndef CONFIG_SPICE
 /*
  * qmp-commands.hx ensures that QMP command query-spice exists only
  * #ifdef CONFIG_SPICE.  Necessary for an accurate query-commands
  * result.  However, the QAPI schema is blissfully unaware of that,
  * and the QAPI code generator happily generates a dead
  * qmp_marshal_query_spice() that calls qmp_query_spice().  Provide it
  * one, or else linking fails.  FIXME Educate the QAPI schema on
  * CONFIG_SPICE.
  */
 SpiceInfo *qmp_query_spice(Error **errp)
 {
     abort();
 };
 #endif

 void qmp_cont(Error **errp)
 {
     Error *local_err = NULL;
     BlockBackend *blk;
     BlockDriverState *bs;
     BdrvNextIterator it;

     /* if there is a dump in background, we should wait until the dump
      * finished */
     if (dump_in_progress()) {
         error_setg(errp, "There is a dump in process, please wait.");
         return;
     }

     if (runstate_needs_reset()) {
         error_setg(errp, "Resetting the Virtual Machine is required");
         return;
     } else if (runstate_check(RUN_STATE_SUSPENDED)) {
         return;
     }

     for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
         blk_iostatus_reset(blk);
     }

     for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
         bdrv_add_key(bs, NULL, &local_err);
         if (local_err) {
             error_propagate(errp, local_err);
             return;
         }
     }

     /* Continuing after completed migration. Images have been inactivated to
      * allow the destination to take control. Need to get control back now. */
     if (runstate_check(RUN_STATE_FINISH_MIGRATE) ||
         runstate_check(RUN_STATE_POSTMIGRATE))
     {
         bdrv_invalidate_cache_all(&local_err);
         if (local_err) {
             error_propagate(errp, local_err);
             return;
         }
     }

     if (runstate_check(RUN_STATE_INMIGRATE)) {
         autostart = 1;
     } else {
         vm_start();
     }
 }

 void qmp_system_wakeup(Error **errp)
 {
     qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
 }

 ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
 {
     Object *obj;
     bool ambiguous = false;
     ObjectPropertyInfoList *props = NULL;
     ObjectProperty *prop;
     ObjectPropertyIterator iter;

     obj = object_resolve_path(path, &ambiguous);
     if (obj == NULL) {
         if (ambiguous) {
             error_setg(errp, "Path '%s' is ambiguous", path);
         } else {
             error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
                       "Device '%s' not found", path);
         }
         return NULL;
     }

     object_property_iter_init(&iter, obj);
     while ((prop = object_property_iter_next(&iter))) {
         ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));

         entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
         entry->next = props;
         props = entry;

         entry->value->name = g_strdup(prop->name);
         entry->value->type = g_strdup(prop->type);
     }

     return props;
 }

 void qmp_qom_set(const char *path, const char *property, QObject *value,
                  Error **errp)
 {
     Object *obj;

     obj = object_resolve_path(path, NULL);
     if (!obj) {
         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
                   "Device '%s' not found", path);
         return;
     }

     object_property_set_qobject(obj, value, property, errp);
 }

 QObject *qmp_qom_get(const char *path, const char *property, Error **errp)
 {
     Object *obj;

     obj = object_resolve_path(path, NULL);
     if (!obj) {
         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
                   "Device '%s' not found", path);
         return NULL;
     }

     return object_property_get_qobject(obj, property, errp);
 }

 void qmp_set_password(const char *protocol, const char *password,
                       bool has_connected, const char *connected, Error **errp)
 {
     int disconnect_if_connected = 0;
     int fail_if_connected = 0;
     int rc;

     if (has_connected) {
         if (strcmp(connected, "fail") == 0) {
             fail_if_connected = 1;
         } else if (strcmp(connected, "disconnect") == 0) {
             disconnect_if_connected = 1;
         } else if (strcmp(connected, "keep") == 0) {
             /* nothing */
         } else {
             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
             return;
         }
     }

     if (strcmp(protocol, "spice") == 0) {
         if (!qemu_using_spice(errp)) {
             return;
         }
         rc = qemu_spice_set_passwd(password, fail_if_connected,
                                    disconnect_if_connected);
         if (rc != 0) {
             error_setg(errp, QERR_SET_PASSWD_FAILED);
         }
         return;
     }

     if (strcmp(protocol, "vnc") == 0) {
         if (fail_if_connected || disconnect_if_connected) {
             /* vnc supports "connected=keep" only */
             error_setg(errp, QERR_INVALID_PARAMETER, "connected");
             return;
         }
         /* Note that setting an empty password will not disable login through
          * this interface. */
         rc = vnc_display_password(NULL, password);
         if (rc < 0) {
             error_setg(errp, QERR_SET_PASSWD_FAILED);
         }
         return;
     }

     error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
 }

 void qmp_expire_password(const char *protocol, const char *whenstr,
                          Error **errp)
 {
     time_t when;
     int rc;

     if (strcmp(whenstr, "now") == 0) {
         when = 0;
     } else if (strcmp(whenstr, "never") == 0) {
         when = TIME_MAX;
     } else if (whenstr[0] == '+') {
         when = time(NULL) + strtoull(whenstr+1, NULL, 10);
     } else {
         when = strtoull(whenstr, NULL, 10);
     }

     if (strcmp(protocol, "spice") == 0) {
         if (!qemu_using_spice(errp)) {
             return;
         }
         rc = qemu_spice_set_pw_expire(when);
         if (rc != 0) {
             error_setg(errp, QERR_SET_PASSWD_FAILED);
         }
         return;
     }

     if (strcmp(protocol, "vnc") == 0) {
         rc = vnc_display_pw_expire(NULL, when);
         if (rc != 0) {
             error_setg(errp, QERR_SET_PASSWD_FAILED);
         }
         return;
     }

     error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
 }

 #ifdef CONFIG_VNC
 void qmp_change_vnc_password(const char *password, Error **errp)
 {
     if (vnc_display_password(NULL, password) < 0) {
         error_setg(errp, QERR_SET_PASSWD_FAILED);
     }
 }

 static void qmp_change_vnc_listen(const char *target, Error **errp)
 {
     QemuOptsList *olist = qemu_find_opts("vnc");
     QemuOpts *opts;

     if (strstr(target, "id=")) {
         error_setg(errp, "id not supported");
         return;
     }

     opts = qemu_opts_find(olist, "default");
     if (opts) {
         qemu_opts_del(opts);
     }
     opts = vnc_parse(target, errp);
     if (!opts) {
         return;
     }

     vnc_display_open("default", errp);
 }

 static void qmp_change_vnc(const char *target, bool has_arg, const char *arg,
                            Error **errp)
 {
     if (strcmp(target, "passwd") == 0 || strcmp(target, "password") == 0) {
         if (!has_arg) {
             error_setg(errp, QERR_MISSING_PARAMETER, "password");
         } else {
             qmp_change_vnc_password(arg, errp);
         }
     } else {
         qmp_change_vnc_listen(target, errp);
     }
 }
 #else
 void qmp_change_vnc_password(const char *password, Error **errp)
 {
     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
 }
 static void qmp_change_vnc(const char *target, bool has_arg, const char *arg,
                            Error **errp)
 {
     error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
 }
 #endif /* !CONFIG_VNC */

 void qmp_change(const char *device, const char *target,
                 bool has_arg, const char *arg, Error **errp)
 {
     if (strcmp(device, "vnc") == 0) {
         qmp_change_vnc(target, has_arg, arg, errp);
     } else {
         qmp_blockdev_change_medium(true, device, false, NULL, target,
                                    has_arg, arg, false, 0, errp);
     }
 }

 static void qom_list_types_tramp(ObjectClass *klass, void *data)
 {
     ObjectTypeInfoList *e, **pret = data;
     ObjectTypeInfo *info;

     info = g_malloc0(sizeof(*info));
     info->name = g_strdup(object_class_get_name(klass));

     e = g_malloc0(sizeof(*e));
     e->value = info;
     e->next = *pret;
     *pret = e;
 }

 ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
                                        const char *implements,
                                        bool has_abstract,
                                        bool abstract,
                                        Error **errp)
 {
     ObjectTypeInfoList *ret = NULL;

     object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);

     return ret;
 }

 /* Return a DevicePropertyInfo for a qdev property.
  *
  * If a qdev property with the given name does not exist, use the given default
  * type.  If the qdev property info should not be shown, return NULL.
  *
  * The caller must free the return value.
  */
 static DevicePropertyInfo *make_device_property_info(ObjectClass *klass,
                                                      const char *name,
                                                      const char *default_type,
                                                      const char *description)
 {
     DevicePropertyInfo *info;
     Property *prop;

     do {
         for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
             if (strcmp(name, prop->name) != 0) {
                 continue;
             }

             /*
              * TODO Properties without a parser are just for dirty hacks.
              * qdev_prop_ptr is the only such PropertyInfo.  It's marked
              * for removal.  This conditional should be removed along with
              * it.
              */
             if (!prop->info->set) {
                 return NULL;           /* no way to set it, don't show */
             }

             info = g_malloc0(sizeof(*info));
             info->name = g_strdup(prop->name);
             info->type = g_strdup(prop->info->name);
             info->has_description = !!prop->info->description;
             info->description = g_strdup(prop->info->description);
             return info;
         }
         klass = object_class_get_parent(klass);
     } while (klass != object_class_by_name(TYPE_DEVICE));

     /* Not a qdev property, use the default type */
     info = g_malloc0(sizeof(*info));
     info->name = g_strdup(name);
     info->type = g_strdup(default_type);
     info->has_description = !!description;
     info->description = g_strdup(description);

     return info;
 }

 DevicePropertyInfoList *qmp_device_list_properties(const char *typename,
                                                    Error **errp)
 {
     ObjectClass *klass;
     Object *obj;
     ObjectProperty *prop;
     ObjectPropertyIterator iter;
     DevicePropertyInfoList *prop_list = NULL;

     klass = object_class_by_name(typename);
     if (klass == NULL) {
         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
                   "Device '%s' not found", typename);
         return NULL;
     }

     klass = object_class_dynamic_cast(klass, TYPE_DEVICE);
     if (klass == NULL) {
         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "name", TYPE_DEVICE);
         return NULL;
     }

     if (object_class_is_abstract(klass)) {
         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "name",
                    "non-abstract device type");
         return NULL;
     }

     if (DEVICE_CLASS(klass)->cannot_destroy_with_object_finalize_yet) {
         error_setg(errp, "Can't list properties of device '%s'", typename);
         return NULL;
     }

     obj = object_new(typename);

     object_property_iter_init(&iter, obj);
     while ((prop = object_property_iter_next(&iter))) {
         DevicePropertyInfo *info;
         DevicePropertyInfoList *entry;

         /* Skip Object and DeviceState properties */
         if (strcmp(prop->name, "type") == 0 ||
             strcmp(prop->name, "realized") == 0 ||
             strcmp(prop->name, "hotpluggable") == 0 ||
             strcmp(prop->name, "hotplugged") == 0 ||
             strcmp(prop->name, "parent_bus") == 0) {
             continue;
         }

         /* Skip legacy properties since they are just string versions of
          * properties that we already list.
          */
         if (strstart(prop->name, "legacy-", NULL)) {
             continue;
         }

         info = make_device_property_info(klass, prop->name, prop->type,
                                          prop->description);
         if (!info) {
             continue;
         }

         entry = g_malloc0(sizeof(*entry));
         entry->value = info;
         entry->next = prop_list;
         prop_list = entry;
     }

     object_unref(obj);

     return prop_list;
 }

 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 {
     return arch_query_cpu_definitions(errp);
 }

 CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
                                                      CpuModelInfo *model,
                                                      Error **errp)
 {
     return arch_query_cpu_model_expansion(type, model, errp);
 }

 CpuModelCompareInfo *qmp_query_cpu_model_comparison(CpuModelInfo *modela,
                                                     CpuModelInfo *modelb,
                                                     Error **errp)
 {
     return arch_query_cpu_model_comparison(modela, modelb, errp);
 }

 CpuModelBaselineInfo *qmp_query_cpu_model_baseline(CpuModelInfo *modela,
                                                    CpuModelInfo *modelb,
                                                    Error **errp)
 {
     return arch_query_cpu_model_baseline(modela, modelb, errp);
 }

 void qmp_add_client(const char *protocol, const char *fdname,
                     bool has_skipauth, bool skipauth, bool has_tls, bool tls,
                     Error **errp)
 {
     CharDriverState *s;
     int fd;

     fd = monitor_get_fd(cur_mon, fdname, errp);
     if (fd < 0) {
         return;
     }

     if (strcmp(protocol, "spice") == 0) {
         if (!qemu_using_spice(errp)) {
             close(fd);
             return;
         }
         skipauth = has_skipauth ? skipauth : false;
         tls = has_tls ? tls : false;
         if (qemu_spice_display_add_client(fd, skipauth, tls) < 0) {
             error_setg(errp, "spice failed to add client");
             close(fd);
         }
         return;
 #ifdef CONFIG_VNC
     } else if (strcmp(protocol, "vnc") == 0) {
         skipauth = has_skipauth ? skipauth : false;
         vnc_display_add_client(NULL, fd, skipauth);
         return;
 #endif
     } else if ((s = qemu_chr_find(protocol)) != NULL) {
         if (qemu_chr_add_client(s, fd) < 0) {
             error_setg(errp, "failed to add client");
             close(fd);
             return;
         }
         return;
     }

     error_setg(errp, "protocol '%s' is invalid", protocol);
     close(fd);
 }


 void qmp_object_add(const char *type, const char *id,
                     bool has_props, QObject *props, Error **errp)
 {
     QDict *pdict;
     Visitor *v;
     Object *obj;

     if (props) {
         pdict = qobject_to_qdict(props);
         if (!pdict) {
             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
             return;
         }
         QINCREF(pdict);
     } else {
         pdict = qdict_new();
     }

     v = qmp_input_visitor_new(QOBJECT(pdict), true);
     obj = user_creatable_add_type(type, id, pdict, v, errp);
     visit_free(v);
     if (obj) {
         object_unref(obj);
     }
     QDECREF(pdict);
 }

 void qmp_object_del(const char *id, Error **errp)
 {
     user_creatable_del(id, errp);
 }

 MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp)
 {
     MemoryDeviceInfoList *head = NULL;
     MemoryDeviceInfoList **prev = &head;

     qmp_pc_dimm_device_list(qdev_get_machine(), &prev);

     return head;
 }

 ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp)
 {
     bool ambig;
     ACPIOSTInfoList *head = NULL;
     ACPIOSTInfoList **prev = &head;
     Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig);

     if (obj) {
         AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
         AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);

         adevc->ospm_status(adev, &prev);
     } else {
         error_setg(errp, "command is not supported, missing ACPI device");
     }

     return head;
 }
	/*
	* QEMU Management Protocol
	*
	* Copyright IBM, Corp. 2011
	*
	* Authors:
	* Anthony Liguori <aliguori@us.ibm.com>
	*
	* This work is licensed under the terms of the GNU GPL, version 2. See
	* the COPYING file in the top-level directory.
	*
	* Contributions after 2012-01-13 are licensed under the terms of the
	* GNU GPL, version 2 or (at your option) any later version.
	*/

	#include "qemu/osdep.h"
	#include "qemu-version.h"
	#include "qemu/cutils.h"
	#include "monitor/monitor.h"
	#include "sysemu/sysemu.h"
	#include "qemu/uuid.h"
	#include "qmp-commands.h"
	#include "sysemu/char.h"
	#include "ui/qemu-spice.h"
	#include "ui/vnc.h"
	#include "sysemu/kvm.h"
	#include "sysemu/arch_init.h"
	#include "hw/qdev.h"
	#include "sysemu/blockdev.h"
	#include "sysemu/block-backend.h"
	#include "qom/qom-qobject.h"
	#include "qapi/qmp/qerror.h"
	#include "qapi/qmp/qobject.h"
	#include "qapi/qmp-input-visitor.h"
	#include "hw/boards.h"
	#include "qom/object_interfaces.h"
	#include "hw/mem/pc-dimm.h"
	#include "hw/acpi/acpi_dev_interface.h"
	#include "qemu/uuid.h"

	NameInfo qmp_query_name(Error *errp)
	{
	NameInfo info = g_malloc0(sizeof(info));

	if (qemu_name) {
	info->has_name = true;
	info->name = g_strdup(qemu_name);
	}

	return info;
	}

	VersionInfo qmp_query_version(Error *errp)
	{
	VersionInfo *info = g_new0(VersionInfo, 1);

	info->qemu = g_new0(VersionTriple, 1);
	info->qemu->major = QEMU_VERSION_MAJOR;
	info->qemu->minor = QEMU_VERSION_MINOR;
	info->qemu->micro = QEMU_VERSION_MICRO;
	info->package = g_strdup(QEMU_PKGVERSION);

	return info;
	}

	KvmInfo qmp_query_kvm(Error *errp)
	{
	KvmInfo info = g_malloc0(sizeof(info));

	info->enabled = kvm_enabled();
	info->present = kvm_available();

	return info;
	}

	UuidInfo qmp_query_uuid(Error *errp)
	{
	UuidInfo info = g_malloc0(sizeof(info));

	info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid);
	return info;
	}

	void qmp_quit(Error **errp)
	{
	no_shutdown = 0;
	qemu_system_shutdown_request();
	}

	void qmp_stop(Error **errp)
	{
	/* if there is a dump in background, we should wait until the dump
	* finished */
	if (dump_in_progress()) {
	error_setg(errp, "There is a dump in process, please wait.");
	return;
	}

	if (runstate_check(RUN_STATE_INMIGRATE)) {
	autostart = 0;
	} else {
	vm_stop(RUN_STATE_PAUSED);
	}
	}

	void qmp_system_reset(Error **errp)
	{
	qemu_system_reset_request();
	}

	void qmp_system_powerdown(Error **erp)
	{
	qemu_system_powerdown_request();
	}

	void qmp_cpu(int64_t index, Error **errp)
	{
	/* Just do nothing */
	}

	void qmp_cpu_add(int64_t id, Error **errp)
	{
	MachineClass *mc;

	mc = MACHINE_GET_CLASS(current_machine);
	if (mc->hot_add_cpu) {
	mc->hot_add_cpu(id, errp);
	} else {
	error_setg(errp, "Not supported");
	}
	}

	#ifndef CONFIG_VNC
	/* If VNC support is enabled, the "true" query-vnc command is
	defined in the VNC subsystem */
	VncInfo qmp_query_vnc(Error *errp)
	{
	error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
	return NULL;
	};

	VncInfo2List qmp_query_vnc_servers(Error *errp)
	{
	error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
	return NULL;
	};
	#endif

	#ifndef CONFIG_SPICE
	/*
	* qmp-commands.hx ensures that QMP command query-spice exists only
	* #ifdef CONFIG_SPICE. Necessary for an accurate query-commands
	* result. However, the QAPI schema is blissfully unaware of that,
	* and the QAPI code generator happily generates a dead
	* qmp_marshal_query_spice() that calls qmp_query_spice(). Provide it
	* one, or else linking fails. FIXME Educate the QAPI schema on
	* CONFIG_SPICE.
	*/
	SpiceInfo qmp_query_spice(Error *errp)
	{
	abort();
	};
	#endif

	void qmp_cont(Error **errp)
	{
	Error *local_err = NULL;
	BlockBackend *blk;
	BlockDriverState *bs;
	BdrvNextIterator it;

	/* if there is a dump in background, we should wait until the dump
	* finished */
	if (dump_in_progress()) {
	error_setg(errp, "There is a dump in process, please wait.");
	return;
	}

	if (runstate_needs_reset()) {
	error_setg(errp, "Resetting the Virtual Machine is required");
	return;
	} else if (runstate_check(RUN_STATE_SUSPENDED)) {
	return;
	}

	for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
	blk_iostatus_reset(blk);
	}

	for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
	bdrv_add_key(bs, NULL, &local_err);
	if (local_err) {
	error_propagate(errp, local_err);
	return;
	}
	}

	/* Continuing after completed migration. Images have been inactivated to
	* allow the destination to take control. Need to get control back now. */
	if (runstate_check(RUN_STATE_FINISH_MIGRATE) \|\|
	runstate_check(RUN_STATE_POSTMIGRATE))
	{
	bdrv_invalidate_cache_all(&local_err);
	if (local_err) {
	error_propagate(errp, local_err);
	return;
	}
	}

	if (runstate_check(RUN_STATE_INMIGRATE)) {
	autostart = 1;
	} else {
	vm_start();
	}
	}

	void qmp_system_wakeup(Error **errp)
	{
	qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
	}

	ObjectPropertyInfoList qmp_qom_list(const char path, Error **errp)
	{
	Object *obj;
	bool ambiguous = false;
	ObjectPropertyInfoList *props = NULL;
	ObjectProperty *prop;
	ObjectPropertyIterator iter;

	obj = object_resolve_path(path, &ambiguous);
	if (obj == NULL) {
	if (ambiguous) {
	error_setg(errp, "Path '%s' is ambiguous", path);
	} else {
	error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
	"Device '%s' not found", path);
	}
	return NULL;
	}

	object_property_iter_init(&iter, obj);
	while ((prop = object_property_iter_next(&iter))) {
	ObjectPropertyInfoList entry = g_malloc0(sizeof(entry));

	entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
	entry->next = props;
	props = entry;

	entry->value->name = g_strdup(prop->name);
	entry->value->type = g_strdup(prop->type);
	}

	return props;
	}

	void qmp_qom_set(const char path, const char property, QObject *value,
	Error **errp)
	{
	Object *obj;

	obj = object_resolve_path(path, NULL);
	if (!obj) {
	error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
	"Device '%s' not found", path);
	return;
	}

	object_property_set_qobject(obj, value, property, errp);
	}

	QObject qmp_qom_get(const char path, const char property, Error *errp)
	{
	Object *obj;

	obj = object_resolve_path(path, NULL);
	if (!obj) {
	error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
	"Device '%s' not found", path);
	return NULL;
	}

	return object_property_get_qobject(obj, property, errp);
	}

	void qmp_set_password(const char protocol, const char password,
	bool has_connected, const char connected, Error *errp)
	{
	int disconnect_if_connected = 0;
	int fail_if_connected = 0;
	int rc;

	if (has_connected) {
	if (strcmp(connected, "fail") == 0) {
	fail_if_connected = 1;
	} else if (strcmp(connected, "disconnect") == 0) {
	disconnect_if_connected = 1;
	} else if (strcmp(connected, "keep") == 0) {
	/* nothing */
	} else {
	error_setg(errp, QERR_INVALID_PARAMETER, "connected");
	return;
	}
	}

	if (strcmp(protocol, "spice") == 0) {
	if (!qemu_using_spice(errp)) {
	return;
	}
	rc = qemu_spice_set_passwd(password, fail_if_connected,
	disconnect_if_connected);
	if (rc != 0) {
	error_setg(errp, QERR_SET_PASSWD_FAILED);
	}
	return;
	}

	if (strcmp(protocol, "vnc") == 0) {
	if (fail_if_connected \|\| disconnect_if_connected) {
	/* vnc supports "connected=keep" only */
	error_setg(errp, QERR_INVALID_PARAMETER, "connected");
	return;
	}
	/* Note that setting an empty password will not disable login through
	* this interface. */
	rc = vnc_display_password(NULL, password);
	if (rc < 0) {
	error_setg(errp, QERR_SET_PASSWD_FAILED);
	}
	return;
	}

	error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
	}

	void qmp_expire_password(const char protocol, const char whenstr,
	Error **errp)
	{
	time_t when;
	int rc;

	if (strcmp(whenstr, "now") == 0) {
	when = 0;
	} else if (strcmp(whenstr, "never") == 0) {
	when = TIME_MAX;
	} else if (whenstr[0] == '+') {
	when = time(NULL) + strtoull(whenstr+1, NULL, 10);
	} else {
	when = strtoull(whenstr, NULL, 10);
	}

	if (strcmp(protocol, "spice") == 0) {
	if (!qemu_using_spice(errp)) {
	return;
	}
	rc = qemu_spice_set_pw_expire(when);
	if (rc != 0) {
	error_setg(errp, QERR_SET_PASSWD_FAILED);
	}
	return;
	}

	if (strcmp(protocol, "vnc") == 0) {
	rc = vnc_display_pw_expire(NULL, when);
	if (rc != 0) {
	error_setg(errp, QERR_SET_PASSWD_FAILED);
	}
	return;
	}

	error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
	}

	#ifdef CONFIG_VNC
	void qmp_change_vnc_password(const char password, Error *errp)
	{
	if (vnc_display_password(NULL, password) < 0) {
	error_setg(errp, QERR_SET_PASSWD_FAILED);
	}
	}

	static void qmp_change_vnc_listen(const char target, Error *errp)
	{
	QemuOptsList *olist = qemu_find_opts("vnc");
	QemuOpts *opts;

	if (strstr(target, "id=")) {
	error_setg(errp, "id not supported");
	return;
	}

	opts = qemu_opts_find(olist, "default");
	if (opts) {
	qemu_opts_del(opts);
	}
	opts = vnc_parse(target, errp);
	if (!opts) {
	return;
	}

	vnc_display_open("default", errp);
	}

	static void qmp_change_vnc(const char target, bool has_arg, const char arg,
	Error **errp)
	{
	if (strcmp(target, "passwd") == 0 \|\| strcmp(target, "password") == 0) {
	if (!has_arg) {
	error_setg(errp, QERR_MISSING_PARAMETER, "password");
	} else {
	qmp_change_vnc_password(arg, errp);
	}
	} else {
	qmp_change_vnc_listen(target, errp);
	}
	}
	#else
	void qmp_change_vnc_password(const char password, Error *errp)
	{
	error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
	}
	static void qmp_change_vnc(const char target, bool has_arg, const char arg,
	Error **errp)
	{
	error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
	}
	#endif /* !CONFIG_VNC */

	void qmp_change(const char device, const char target,
	bool has_arg, const char arg, Error *errp)
	{
	if (strcmp(device, "vnc") == 0) {
	qmp_change_vnc(target, has_arg, arg, errp);
	} else {
	qmp_blockdev_change_medium(true, device, false, NULL, target,
	has_arg, arg, false, 0, errp);
	}
	}

	static void qom_list_types_tramp(ObjectClass klass, void data)
	{
	ObjectTypeInfoList e, *pret = data;
	ObjectTypeInfo *info;

	info = g_malloc0(sizeof(*info));
	info->name = g_strdup(object_class_get_name(klass));

	e = g_malloc0(sizeof(*e));
	e->value = info;
	e->next = *pret;
	*pret = e;
	}

	ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
	const char *implements,
	bool has_abstract,
	bool abstract,
	Error **errp)
	{
	ObjectTypeInfoList *ret = NULL;

	object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);

	return ret;
	}

	/* Return a DevicePropertyInfo for a qdev property.
	*
	* If a qdev property with the given name does not exist, use the given default
	* type. If the qdev property info should not be shown, return NULL.
	*
	* The caller must free the return value.
	*/
	static DevicePropertyInfo make_device_property_info(ObjectClass klass,
	const char *name,
	const char *default_type,
	const char *description)
	{
	DevicePropertyInfo *info;
	Property *prop;

	do {
	for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
	if (strcmp(name, prop->name) != 0) {
	continue;
	}

	/*
	* TODO Properties without a parser are just for dirty hacks.
	* qdev_prop_ptr is the only such PropertyInfo. It's marked
	* for removal. This conditional should be removed along with
	* it.
	*/
	if (!prop->info->set) {
	return NULL; /* no way to set it, don't show */
	}

	info = g_malloc0(sizeof(*info));
	info->name = g_strdup(prop->name);
	info->type = g_strdup(prop->info->name);
	info->has_description = !!prop->info->description;
	info->description = g_strdup(prop->info->description);
	return info;
	}
	klass = object_class_get_parent(klass);
	} while (klass != object_class_by_name(TYPE_DEVICE));

	/* Not a qdev property, use the default type */
	info = g_malloc0(sizeof(*info));
	info->name = g_strdup(name);
	info->type = g_strdup(default_type);
	info->has_description = !!description;
	info->description = g_strdup(description);

	return info;
	}

	DevicePropertyInfoList qmp_device_list_properties(const char typename,
	Error **errp)
	{
	ObjectClass *klass;
	Object *obj;
	ObjectProperty *prop;
	ObjectPropertyIterator iter;
	DevicePropertyInfoList *prop_list = NULL;

	klass = object_class_by_name(typename);
	if (klass == NULL) {
	error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
	"Device '%s' not found", typename);
	return NULL;
	}

	klass = object_class_dynamic_cast(klass, TYPE_DEVICE);
	if (klass == NULL) {
	error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "name", TYPE_DEVICE);
	return NULL;
	}

	if (object_class_is_abstract(klass)) {
	error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "name",
	"non-abstract device type");
	return NULL;
	}

	if (DEVICE_CLASS(klass)->cannot_destroy_with_object_finalize_yet) {
	error_setg(errp, "Can't list properties of device '%s'", typename);
	return NULL;
	}

	obj = object_new(typename);

	object_property_iter_init(&iter, obj);
	while ((prop = object_property_iter_next(&iter))) {
	DevicePropertyInfo *info;
	DevicePropertyInfoList *entry;

	/* Skip Object and DeviceState properties */
	if (strcmp(prop->name, "type") == 0 \|\|
	strcmp(prop->name, "realized") == 0 \|\|
	strcmp(prop->name, "hotpluggable") == 0 \|\|
	strcmp(prop->name, "hotplugged") == 0 \|\|
	strcmp(prop->name, "parent_bus") == 0) {
	continue;
	}

	/* Skip legacy properties since they are just string versions of
	* properties that we already list.
	*/
	if (strstart(prop->name, "legacy-", NULL)) {
	continue;
	}

	info = make_device_property_info(klass, prop->name, prop->type,
	prop->description);
	if (!info) {
	continue;
	}

	entry = g_malloc0(sizeof(*entry));
	entry->value = info;
	entry->next = prop_list;
	prop_list = entry;
	}

	object_unref(obj);

	return prop_list;
	}

	CpuDefinitionInfoList qmp_query_cpu_definitions(Error *errp)
	{
	return arch_query_cpu_definitions(errp);
	}

	CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
	CpuModelInfo *model,
	Error **errp)
	{
	return arch_query_cpu_model_expansion(type, model, errp);
	}

	CpuModelCompareInfo qmp_query_cpu_model_comparison(CpuModelInfo modela,
	CpuModelInfo *modelb,
	Error **errp)
	{
	return arch_query_cpu_model_comparison(modela, modelb, errp);
	}

	CpuModelBaselineInfo qmp_query_cpu_model_baseline(CpuModelInfo modela,
	CpuModelInfo *modelb,
	Error **errp)
	{
	return arch_query_cpu_model_baseline(modela, modelb, errp);
	}

	void qmp_add_client(const char protocol, const char fdname,
	bool has_skipauth, bool skipauth, bool has_tls, bool tls,
	Error **errp)
	{
	CharDriverState *s;
	int fd;

	fd = monitor_get_fd(cur_mon, fdname, errp);
	if (fd < 0) {
	return;
	}

	if (strcmp(protocol, "spice") == 0) {
	if (!qemu_using_spice(errp)) {
	close(fd);
	return;
	}
	skipauth = has_skipauth ? skipauth : false;
	tls = has_tls ? tls : false;
	if (qemu_spice_display_add_client(fd, skipauth, tls) < 0) {
	error_setg(errp, "spice failed to add client");
	close(fd);
	}
	return;
	#ifdef CONFIG_VNC
	} else if (strcmp(protocol, "vnc") == 0) {
	skipauth = has_skipauth ? skipauth : false;
	vnc_display_add_client(NULL, fd, skipauth);
	return;
	#endif
	} else if ((s = qemu_chr_find(protocol)) != NULL) {
	if (qemu_chr_add_client(s, fd) < 0) {
	error_setg(errp, "failed to add client");
	close(fd);
	return;
	}
	return;
	}

	error_setg(errp, "protocol '%s' is invalid", protocol);
	close(fd);
	}


	void qmp_object_add(const char type, const char id,
	bool has_props, QObject props, Error *errp)
	{
	QDict *pdict;
	Visitor *v;
	Object *obj;

	if (props) {
	pdict = qobject_to_qdict(props);
	if (!pdict) {
	error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
	return;
	}
	QINCREF(pdict);
	} else {
	pdict = qdict_new();
	}

	v = qmp_input_visitor_new(QOBJECT(pdict), true);
	obj = user_creatable_add_type(type, id, pdict, v, errp);
	visit_free(v);
	if (obj) {
	object_unref(obj);
	}
	QDECREF(pdict);
	}

	void qmp_object_del(const char id, Error *errp)
	{
	user_creatable_del(id, errp);
	}

	MemoryDeviceInfoList qmp_query_memory_devices(Error *errp)
	{
	MemoryDeviceInfoList *head = NULL;
	MemoryDeviceInfoList **prev = &head;

	qmp_pc_dimm_device_list(qdev_get_machine(), &prev);

	return head;
	}

	ACPIOSTInfoList qmp_query_acpi_ospm_status(Error *errp)
	{
	bool ambig;
	ACPIOSTInfoList *head = NULL;
	ACPIOSTInfoList **prev = &head;
	Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig);

	if (obj) {
	AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
	AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj);

	adevc->ospm_status(adev, &prev);
	} else {
	error_setg(errp, "command is not supported, missing ACPI device");
	}

	return head;
	}