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qemu-patch-raspberry4/qmp.c
Paolo Bonzini 9f5f135058 qom: add QObject-based property get/set wrappers 
Move the creation of QmpInputVisitor and QmpOutputVisitor from qmp.c
to qom/object.c, since it's the only practical way to access object
properties.

Keep this isolated such that it's easy to remove.  At some point, we need
to remove all usage of QObject in the tree and replace it with GVariant.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07 13:52:40 +01:00

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/*
* 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)
{
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_INMIGRATE)) {
error_set(errp, QERR_MIGRATION_EXPECTED);
return;
} else if (runstate_check(RUN_STATE_INTERNAL_ERROR) ||
runstate_check(RUN_STATE_SHUTDOWN)) {
error_set(errp, QERR_RESET_REQUIRED);
return;
}
bdrv_iterate(iostatus_bdrv_it, NULL);
bdrv_iterate(encrypted_bdrv_it, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
vm_start();
}
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 **err)
{
if (vnc_display_open(NULL, target) < 0) {
error_set(err, QERR_VNC_SERVER_FAILED, target);
}
}
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;
}
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