Archipelago » qemu

/*

 * 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/sysemu.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 "qom/qom-qobject.h"

#include "qapi/qmp/qobject.h"

#include "qapi/qmp-input-visitor.h"

#include "hw/boards.h"

#include "qom/object_interfaces.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 */

}

void qmp_cpu_add(int64_t id, Error **errp)

{

    if (current_machine->hot_add_cpu) {

        current_machine->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_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_needs_reset()) {

        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, 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;

}

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);

}

void object_add(const char *type, const char *id, const QDict *qdict,

                Visitor *v, Error **errp)

{

    Object *obj;

    const QDictEntry *e;

    Error *local_err = NULL;

    if (!object_class_by_name(type)) {

        error_setg(errp, "invalid class name");

        return;

    }

    obj = object_new(type);

    if (qdict) {

        for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {

            object_property_set(obj, v, e->key, &local_err);

            if (local_err) {

                goto out;

            }

        }

    }

    if (!object_dynamic_cast(obj, TYPE_USER_CREATABLE)) {

        error_setg(&local_err, "object type '%s' isn't supported by object-add",

                   type);

        goto out;

    }

    user_creatable_complete(obj, &local_err);

    if (local_err) {

        goto out;

    }

    object_property_add_child(container_get(object_get_root(), "/objects"),

                              id, obj, &local_err);

out:

    if (local_err) {

        error_propagate(errp, local_err);

    }

    object_unref(obj);

}

int qmp_object_add(Monitor *mon, const QDict *qdict, QObject **ret)

{

    const char *type = qdict_get_str(qdict, "qom-type");

    const char *id = qdict_get_str(qdict, "id");

    QObject *props = qdict_get(qdict, "props");

    const QDict *pdict = NULL;

    Error *local_err = NULL;

    QmpInputVisitor *qiv;

    if (props) {

        pdict = qobject_to_qdict(props);

        if (!pdict) {

            error_set(&local_err, QERR_INVALID_PARAMETER_TYPE, "props", "dict");

            goto out;

        }

    }

    qiv = qmp_input_visitor_new(props);

    object_add(type, id, pdict, qmp_input_get_visitor(qiv), &local_err);

    qmp_input_visitor_cleanup(qiv);

out:

    if (local_err) {

        qerror_report_err(local_err);

        error_free(local_err);

        return -1;

    }

    return 0;

}

void qmp_object_del(const char *id, Error **errp)

{

    Object *container;

    Object *obj;

    container = container_get(object_get_root(), "/objects");

    obj = object_resolve_path_component(container, id);

    if (!obj) {

        error_setg(errp, "object id not found");

        return;

    }

    object_unparent(obj);

}