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qemu/monitor/qmp-cmds.c

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/*
* QEMU Management Protocol commands
*
* 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-common.h"
#include "qemu/cutils.h"
#include "qemu/option.h"
#include "monitor/monitor.h"
#include "sysemu/sysemu.h"
#include "qemu/config-file.h"
#include "qemu/uuid.h"
#include "chardev/char.h"
#include "ui/qemu-spice.h"
#include "ui/vnc.h"
#include "sysemu/kvm.h"
#include "sysemu/runstate.h"
#include "sysemu/arch_init.h"
#include "sysemu/blockdev.h"
#include "sysemu/block-backend.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-acpi.h"
#include "qapi/qapi-commands-block.h"
#include "qapi/qapi-commands-control.h"
#include "qapi/qapi-commands-machine.h"
#include "qapi/qapi-commands-misc.h"
#include "qapi/qapi-commands-ui.h"
#include "qapi/qmp/qerror.h"
#include "hw/mem/memory-device.h"
#include "hw/acpi/acpi_dev_interface.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;
}
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(SHUTDOWN_CAUSE_HOST_QMP_QUIT);
}
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(SHUTDOWN_CAUSE_HOST_QMP_SYSTEM_RESET);
}
void qmp_system_powerdown(Error **errp)
{
qemu_system_powerdown_request();
}
void qmp_x_exit_preconfig(Error **errp)
{
if (!runstate_check(RUN_STATE_PRECONFIG)) {
error_setg(errp, "The command is permitted only in '%s' state",
RunState_str(RUN_STATE_PRECONFIG));
return;
}
qemu_exit_preconfig_request();
}
void qmp_cont(Error **errp)
{
BlockBackend *blk;
BlockJob *job;
Error *local_err = NULL;
/* 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;
} else if (runstate_check(RUN_STATE_FINISH_MIGRATE)) {
error_setg(errp, "Migration is not finalized yet");
return;
}
for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
blk_iostatus_reset(blk);
}
for (job = block_job_next(NULL); job; job = block_job_next(job)) {
block_job_iostatus_reset(job);
}
/* Continuing after completed migration. Images have been inactivated to
* allow the destination to take control. Need to get control back now.
*
* If there are no inactive block nodes (e.g. because the VM was just
* paused rather than completing a migration), bdrv_inactivate_all() simply
* doesn't do anything. */
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)
{
if (!qemu_wakeup_suspend_enabled()) {
error_setg(errp,
"wake-up from suspend is not supported by this guest");
return;
}
qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, 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);
}
}
#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) {
#ifdef CONFIG_VNC
qmp_change_vnc(target, has_arg, arg, errp);
#else
error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
#endif
} else {
qmp_blockdev_change_medium(true, device, false, NULL, target,
has_arg, arg, false, 0, errp);
}
}
void qmp_add_client(const char *protocol, const char *fdname,
bool has_skipauth, bool skipauth, bool has_tls, bool tls,
Error **errp)
{
Chardev *s;
int fd;
fd = monitor_get_fd(monitor_cur(), 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);
}
MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp)
{
return qmp_memory_device_list();
}
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;
}
MemoryInfo *qmp_query_memory_size_summary(Error **errp)
{
MemoryInfo *mem_info = g_malloc0(sizeof(MemoryInfo));
mem_info->base_memory = ram_size;
mem_info->plugged_memory = get_plugged_memory_size();
mem_info->has_plugged_memory =
mem_info->plugged_memory != (uint64_t)-1;
return mem_info;
}
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