qmp.c - pub/scm/virt/qemu/amit/virtio-serial - 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-common.h"
 #include "sysemu.h"
 #include "qmp-commands.h"
 #include "ui/qemu-spice.h"
 #include "ui/vnc.h"
 #include "kvm.h"
 #include "arch_init.h"
 #include "hw/qdev.h"
 #include "blockdev.h"
 #include "qemu/qom-qobject.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 **err)
 {
     VersionInfo *info = g_malloc0(sizeof(*info));
     const char *version = QEMU_VERSION;
     char *tmp;

     info->qemu.major = strtol(version, &tmp, 10);
     tmp++;
     info->qemu.minor = strtol(tmp, &tmp, 10);
     tmp++;
     info->qemu.micro = strtol(tmp, &tmp, 10);
     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));
     char uuid[64];

     snprintf(uuid, sizeof(uuid), UUID_FMT, qemu_uuid[0], qemu_uuid[1],
                    qemu_uuid[2], qemu_uuid[3], qemu_uuid[4], qemu_uuid[5],
                    qemu_uuid[6], qemu_uuid[7], qemu_uuid[8], qemu_uuid[9],
                    qemu_uuid[10], qemu_uuid[11], qemu_uuid[12], qemu_uuid[13],
                    qemu_uuid[14], qemu_uuid[15]);

     info->UUID = g_strdup(uuid);
     return info;
 }

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

 void qmp_stop(Error **errp)
 {
     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 */
 }

 #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_set(errp, QERR_FEATURE_DISABLED, "vnc");
     return NULL;
 };
 #endif

 #ifndef CONFIG_SPICE
 /* If SPICE support is enabled, the "true" query-spice command is
    defined in the SPICE subsystem. Also note that we use a small
    trick to maintain query-spice's original behavior, which is not
    to be available in the namespace if SPICE is not compiled in */
 SpiceInfo *qmp_query_spice(Error **errp)
 {
     error_set(errp, QERR_COMMAND_NOT_FOUND, "query-spice");
     return NULL;
 };
 #endif

 static void iostatus_bdrv_it(void *opaque, BlockDriverState *bs)
 {
     bdrv_iostatus_reset(bs);
 }

 static void encrypted_bdrv_it(void *opaque, BlockDriverState *bs)
 {
     Error **err = opaque;

     if (!error_is_set(err) && bdrv_key_required(bs)) {
         error_set(err, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs),
                   bdrv_get_encrypted_filename(bs));
     }
 }

 void qmp_cont(Error **errp)
 {
     Error *local_err = NULL;

     if (runstate_check(RUN_STATE_INTERNAL_ERROR) ||
                runstate_check(RUN_STATE_SHUTDOWN)) {
         error_set(errp, QERR_RESET_REQUIRED);
         return;
     } else if (runstate_check(RUN_STATE_SUSPENDED)) {
         return;
     }

     bdrv_iterate(iostatus_bdrv_it, NULL);
     bdrv_iterate(encrypted_bdrv_it, &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;

     obj = object_resolve_path(path, &ambiguous);
     if (obj == NULL) {
         error_set(errp, QERR_DEVICE_NOT_FOUND, path);
         return NULL;
     }

     QTAILQ_FOREACH(prop, &obj->properties, node) {
         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;
 }

 /* FIXME: teach qapi about how to pass through Visitors */
 int qmp_qom_set(Monitor *mon, const QDict *qdict, QObject **ret)
 {
     const char *path = qdict_get_str(qdict, "path");
     const char *property = qdict_get_str(qdict, "property");
     QObject *value = qdict_get(qdict, "value");
     Error *local_err = NULL;
     Object *obj;

     obj = object_resolve_path(path, NULL);
     if (!obj) {
         error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
         goto out;
     }

     object_property_set_qobject(obj, value, property, &local_err);

 out:
     if (local_err) {
         qerror_report_err(local_err);
         error_free(local_err);
         return -1;
     }

     return 0;
 }

 int qmp_qom_get(Monitor *mon, const QDict *qdict, QObject **ret)
 {
     const char *path = qdict_get_str(qdict, "path");
     const char *property = qdict_get_str(qdict, "property");
     Error *local_err = NULL;
     Object *obj;

     obj = object_resolve_path(path, NULL);
     if (!obj) {
         error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
         goto out;
     }

     *ret = object_property_get_qobject(obj, property, &local_err);

 out:
     if (local_err) {
         qerror_report_err(local_err);
         error_free(local_err);
         return -1;
     }

     return 0;
 }

 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_set(errp, QERR_INVALID_PARAMETER, "connected");
             return;
         }
     }

     if (strcmp(protocol, "spice") == 0) {
         if (!using_spice) {
             /* correct one? spice isn't a device ,,, */
             error_set(errp, QERR_DEVICE_NOT_ACTIVE, "spice");
             return;
         }
         rc = qemu_spice_set_passwd(password, fail_if_connected,
                                    disconnect_if_connected);
         if (rc != 0) {
             error_set(errp, QERR_SET_PASSWD_FAILED);
         }
         return;
     }

     if (strcmp(protocol, "vnc") == 0) {
         if (fail_if_connected || disconnect_if_connected) {
             /* vnc supports "connected=keep" only */
             error_set(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_set(errp, QERR_SET_PASSWD_FAILED);
         }
         return;
     }

     error_set(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 (!using_spice) {
             /* correct one? spice isn't a device ,,, */
             error_set(errp, QERR_DEVICE_NOT_ACTIVE, "spice");
             return;
         }
         rc = qemu_spice_set_pw_expire(when);
         if (rc != 0) {
             error_set(errp, QERR_SET_PASSWD_FAILED);
         }
         return;
     }

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

     error_set(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_set(errp, QERR_SET_PASSWD_FAILED);
     }
 }

 static void qmp_change_vnc_listen(const char *target, Error **errp)
 {
     vnc_display_open(NULL, target, 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_set(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_set(errp, QERR_FEATURE_DISABLED, "vnc");
 }
 static void qmp_change_vnc(const char *target, bool has_arg, const char *arg,
                            Error **errp)
 {
     error_set(errp, QERR_FEATURE_DISABLED, "vnc");
 }
 #endif /* !CONFIG_VNC */

 void qmp_change(const char *device, const char *target,
                 bool has_arg, const char *arg, Error **err)
 {
     if (strcmp(device, "vnc") == 0) {
         qmp_change_vnc(target, has_arg, arg, err);
     } else {
         qmp_change_blockdev(device, target, has_arg, arg, err);
     }
 }

 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;
 }

 DevicePropertyInfoList *qmp_device_list_properties(const char *typename,
                                                    Error **errp)
 {
     ObjectClass *klass;
     Property *prop;
     DevicePropertyInfoList *prop_list = NULL;

     klass = object_class_by_name(typename);
     if (klass == NULL) {
         error_set(errp, QERR_DEVICE_NOT_FOUND, typename);
         return NULL;
     }

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

     do {
         for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
             DevicePropertyInfoList *entry;
             DevicePropertyInfo *info;

             /*
              * 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) {
                 continue;           /* 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->legacy_name ?: prop->info->name);

             entry = g_malloc0(sizeof(*entry));
             entry->value = info;
             entry->next = prop_list;
             prop_list = entry;
         }
         klass = object_class_get_parent(klass);
     } while (klass != object_class_by_name(TYPE_DEVICE));

     return prop_list;
 }

 static CpuDefinitionInfoList *default_arch_query_cpu_definitions(Error **errp)
 {
     error_set(errp, QERR_NOT_SUPPORTED);
     return NULL;
 }
 QEMU_WEAK_ALIAS(arch_query_cpu_definitions, default_arch_query_cpu_definitions);
 #define arch_query_cpu_definitions \
     QEMU_WEAK_REF(arch_query_cpu_definitions, default_arch_query_cpu_definitions)

 CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp)
 {
     return arch_query_cpu_definitions(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 (!using_spice) {
             error_set(errp, QERR_DEVICE_NOT_ACTIVE, "spice");
             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);
 }
	/*
	* 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-common.h"
	#include "sysemu.h"
	#include "qmp-commands.h"
	#include "ui/qemu-spice.h"
	#include "ui/vnc.h"
	#include "kvm.h"
	#include "arch_init.h"
	#include "hw/qdev.h"
	#include "blockdev.h"
	#include "qemu/qom-qobject.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 *err)
	{
	VersionInfo info = g_malloc0(sizeof(info));
	const char *version = QEMU_VERSION;
	char *tmp;

	info->qemu.major = strtol(version, &tmp, 10);
	tmp++;
	info->qemu.minor = strtol(tmp, &tmp, 10);
	tmp++;
	info->qemu.micro = strtol(tmp, &tmp, 10);
	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));
	char uuid[64];

	snprintf(uuid, sizeof(uuid), UUID_FMT, qemu_uuid[0], qemu_uuid[1],
	qemu_uuid[2], qemu_uuid[3], qemu_uuid[4], qemu_uuid[5],
	qemu_uuid[6], qemu_uuid[7], qemu_uuid[8], qemu_uuid[9],
	qemu_uuid[10], qemu_uuid[11], qemu_uuid[12], qemu_uuid[13],
	qemu_uuid[14], qemu_uuid[15]);

	info->UUID = g_strdup(uuid);
	return info;
	}

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

	void qmp_stop(Error **errp)
	{
	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 */
	}

	#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_set(errp, QERR_FEATURE_DISABLED, "vnc");
	return NULL;
	};
	#endif

	#ifndef CONFIG_SPICE
	/* If SPICE support is enabled, the "true" query-spice command is
	defined in the SPICE subsystem. Also note that we use a small
	trick to maintain query-spice's original behavior, which is not
	to be available in the namespace if SPICE is not compiled in */
	SpiceInfo qmp_query_spice(Error *errp)
	{
	error_set(errp, QERR_COMMAND_NOT_FOUND, "query-spice");
	return NULL;
	};
	#endif

	static void iostatus_bdrv_it(void opaque, BlockDriverState bs)
	{
	bdrv_iostatus_reset(bs);
	}

	static void encrypted_bdrv_it(void opaque, BlockDriverState bs)
	{
	Error **err = opaque;

	if (!error_is_set(err) && bdrv_key_required(bs)) {
	error_set(err, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs),
	bdrv_get_encrypted_filename(bs));
	}
	}

	void qmp_cont(Error **errp)
	{
	Error *local_err = NULL;

	if (runstate_check(RUN_STATE_INTERNAL_ERROR) \|\|
	runstate_check(RUN_STATE_SHUTDOWN)) {
	error_set(errp, QERR_RESET_REQUIRED);
	return;
	} else if (runstate_check(RUN_STATE_SUSPENDED)) {
	return;
	}

	bdrv_iterate(iostatus_bdrv_it, NULL);
	bdrv_iterate(encrypted_bdrv_it, &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;

	obj = object_resolve_path(path, &ambiguous);
	if (obj == NULL) {
	error_set(errp, QERR_DEVICE_NOT_FOUND, path);
	return NULL;
	}

	QTAILQ_FOREACH(prop, &obj->properties, node) {
	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;
	}

	/* FIXME: teach qapi about how to pass through Visitors */
	int qmp_qom_set(Monitor mon, const QDict qdict, QObject **ret)
	{
	const char *path = qdict_get_str(qdict, "path");
	const char *property = qdict_get_str(qdict, "property");
	QObject *value = qdict_get(qdict, "value");
	Error *local_err = NULL;
	Object *obj;

	obj = object_resolve_path(path, NULL);
	if (!obj) {
	error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
	goto out;
	}

	object_property_set_qobject(obj, value, property, &local_err);

	out:
	if (local_err) {
	qerror_report_err(local_err);
	error_free(local_err);
	return -1;
	}

	return 0;
	}

	int qmp_qom_get(Monitor mon, const QDict qdict, QObject **ret)
	{
	const char *path = qdict_get_str(qdict, "path");
	const char *property = qdict_get_str(qdict, "property");
	Error *local_err = NULL;
	Object *obj;

	obj = object_resolve_path(path, NULL);
	if (!obj) {
	error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
	goto out;
	}

	*ret = object_property_get_qobject(obj, property, &local_err);

	out:
	if (local_err) {
	qerror_report_err(local_err);
	error_free(local_err);
	return -1;
	}

	return 0;
	}

	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_set(errp, QERR_INVALID_PARAMETER, "connected");
	return;
	}
	}

	if (strcmp(protocol, "spice") == 0) {
	if (!using_spice) {
	/* correct one? spice isn't a device ,,, */
	error_set(errp, QERR_DEVICE_NOT_ACTIVE, "spice");
	return;
	}
	rc = qemu_spice_set_passwd(password, fail_if_connected,
	disconnect_if_connected);
	if (rc != 0) {
	error_set(errp, QERR_SET_PASSWD_FAILED);
	}
	return;
	}

	if (strcmp(protocol, "vnc") == 0) {
	if (fail_if_connected \|\| disconnect_if_connected) {
	/* vnc supports "connected=keep" only */
	error_set(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_set(errp, QERR_SET_PASSWD_FAILED);
	}
	return;
	}

	error_set(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 (!using_spice) {
	/* correct one? spice isn't a device ,,, */
	error_set(errp, QERR_DEVICE_NOT_ACTIVE, "spice");
	return;
	}
	rc = qemu_spice_set_pw_expire(when);
	if (rc != 0) {
	error_set(errp, QERR_SET_PASSWD_FAILED);
	}
	return;
	}

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

	error_set(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_set(errp, QERR_SET_PASSWD_FAILED);
	}
	}

	static void qmp_change_vnc_listen(const char target, Error *errp)
	{
	vnc_display_open(NULL, target, 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_set(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_set(errp, QERR_FEATURE_DISABLED, "vnc");
	}
	static void qmp_change_vnc(const char target, bool has_arg, const char arg,
	Error **errp)
	{
	error_set(errp, QERR_FEATURE_DISABLED, "vnc");
	}
	#endif /* !CONFIG_VNC */

	void qmp_change(const char device, const char target,
	bool has_arg, const char arg, Error *err)
	{
	if (strcmp(device, "vnc") == 0) {
	qmp_change_vnc(target, has_arg, arg, err);
	} else {
	qmp_change_blockdev(device, target, has_arg, arg, err);
	}
	}

	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;
	}

	DevicePropertyInfoList qmp_device_list_properties(const char typename,
	Error **errp)
	{
	ObjectClass *klass;
	Property *prop;
	DevicePropertyInfoList *prop_list = NULL;

	klass = object_class_by_name(typename);
	if (klass == NULL) {
	error_set(errp, QERR_DEVICE_NOT_FOUND, typename);
	return NULL;
	}

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

	do {
	for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
	DevicePropertyInfoList *entry;
	DevicePropertyInfo *info;

	/*
	* 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) {
	continue; /* 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->legacy_name ?: prop->info->name);

	entry = g_malloc0(sizeof(*entry));
	entry->value = info;
	entry->next = prop_list;
	prop_list = entry;
	}
	klass = object_class_get_parent(klass);
	} while (klass != object_class_by_name(TYPE_DEVICE));

	return prop_list;
	}

	static CpuDefinitionInfoList default_arch_query_cpu_definitions(Error *errp)
	{
	error_set(errp, QERR_NOT_SUPPORTED);
	return NULL;
	}
	QEMU_WEAK_ALIAS(arch_query_cpu_definitions, default_arch_query_cpu_definitions);
	#define arch_query_cpu_definitions \
	QEMU_WEAK_REF(arch_query_cpu_definitions, default_arch_query_cpu_definitions)

	CpuDefinitionInfoList qmp_query_cpu_definitions(Error *errp)
	{
	return arch_query_cpu_definitions(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 (!using_spice) {
	error_set(errp, QERR_DEVICE_NOT_ACTIVE, "spice");
	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);
	}