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fb06411210
The qmp/hmp command 'system_wakeup' is simply a direct call to 'qemu_system_wakeup_request' from vl.c. This function verifies if runstate is SUSPENDED and if the wake up reason is valid before proceeding. However, no error or warning is thrown if any of those pre-requirements isn't met. There is no way for the caller to differentiate between a successful wakeup or an error state caused when trying to wake up a guest that wasn't suspended. This means that system_wakeup is silently failing, which can be considered a bug. Adding error handling isn't an API break in this case - applications that didn't check the result will remain broken, the ones that check it will have a chance to deal with it. Adding to that, the commit before previous created a new QMP API called query-current-machine, with a new flag called wakeup-suspend-support, that indicates if the guest has the capability of waking up from suspended state. Although such guest will never reach SUSPENDED state and erroring it out in this scenario would suffice, it is more informative for the user to differentiate between a failure because the guest isn't suspended versus a failure because the guest does not have support for wake up at all. All this considered, this patch changes qmp_system_wakeup to check if the guest is capable of waking up from suspend, and if it is suspended. After this patch, this is the output of system_wakeup in a guest that does not have wake-up from suspend support (ppc64): (qemu) system_wakeup wake-up from suspend is not supported by this guest (qemu) And this is the output of system_wakeup in a x86 guest that has the support but isn't suspended: (qemu) system_wakeup Unable to wake up: guest is not in suspended state (qemu) Reported-by: Balamuruhan S <bala24@linux.vnet.ibm.com> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20181205194701.17836-4-danielhb413@gmail.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
746 lines
20 KiB
C
746 lines
20 KiB
C
/*
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* QEMU Management Protocol
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "qemu/osdep.h"
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#include "qemu-version.h"
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#include "qemu/cutils.h"
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#include "qemu/option.h"
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#include "monitor/monitor.h"
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#include "sysemu/sysemu.h"
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#include "qemu/config-file.h"
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#include "qemu/uuid.h"
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#include "chardev/char.h"
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#include "ui/qemu-spice.h"
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#include "ui/vnc.h"
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#include "sysemu/kvm.h"
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#include "sysemu/arch_init.h"
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#include "hw/qdev.h"
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#include "sysemu/blockdev.h"
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#include "sysemu/block-backend.h"
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#include "qom/qom-qobject.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-block-core.h"
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#include "qapi/qapi-commands-misc.h"
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#include "qapi/qapi-commands-ui.h"
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#include "qapi/qmp/qdict.h"
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#include "qapi/qmp/qerror.h"
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#include "qapi/qobject-input-visitor.h"
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#include "hw/boards.h"
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#include "qom/object_interfaces.h"
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#include "hw/mem/memory-device.h"
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#include "hw/acpi/acpi_dev_interface.h"
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NameInfo *qmp_query_name(Error **errp)
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{
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NameInfo *info = g_malloc0(sizeof(*info));
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if (qemu_name) {
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info->has_name = true;
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info->name = g_strdup(qemu_name);
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}
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return info;
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}
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VersionInfo *qmp_query_version(Error **errp)
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{
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VersionInfo *info = g_new0(VersionInfo, 1);
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info->qemu = g_new0(VersionTriple, 1);
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info->qemu->major = QEMU_VERSION_MAJOR;
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info->qemu->minor = QEMU_VERSION_MINOR;
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info->qemu->micro = QEMU_VERSION_MICRO;
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info->package = g_strdup(QEMU_PKGVERSION);
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return info;
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}
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KvmInfo *qmp_query_kvm(Error **errp)
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{
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KvmInfo *info = g_malloc0(sizeof(*info));
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info->enabled = kvm_enabled();
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info->present = kvm_available();
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return info;
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}
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UuidInfo *qmp_query_uuid(Error **errp)
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{
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UuidInfo *info = g_malloc0(sizeof(*info));
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info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid);
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return info;
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}
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void qmp_quit(Error **errp)
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{
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no_shutdown = 0;
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qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_QMP_QUIT);
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}
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void qmp_stop(Error **errp)
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{
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/* if there is a dump in background, we should wait until the dump
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* finished */
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if (dump_in_progress()) {
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error_setg(errp, "There is a dump in process, please wait.");
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return;
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}
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if (runstate_check(RUN_STATE_INMIGRATE)) {
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autostart = 0;
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} else {
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vm_stop(RUN_STATE_PAUSED);
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}
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}
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void qmp_system_reset(Error **errp)
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{
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qemu_system_reset_request(SHUTDOWN_CAUSE_HOST_QMP_SYSTEM_RESET);
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}
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void qmp_system_powerdown(Error **erp)
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{
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qemu_system_powerdown_request();
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}
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void qmp_cpu_add(int64_t id, Error **errp)
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{
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MachineClass *mc;
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mc = MACHINE_GET_CLASS(current_machine);
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if (mc->hot_add_cpu) {
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mc->hot_add_cpu(id, errp);
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} else {
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error_setg(errp, "Not supported");
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}
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}
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void qmp_x_exit_preconfig(Error **errp)
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{
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if (!runstate_check(RUN_STATE_PRECONFIG)) {
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error_setg(errp, "The command is permitted only in '%s' state",
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RunState_str(RUN_STATE_PRECONFIG));
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return;
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}
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qemu_exit_preconfig_request();
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}
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void qmp_cont(Error **errp)
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{
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BlockBackend *blk;
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Error *local_err = NULL;
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/* if there is a dump in background, we should wait until the dump
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* finished */
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if (dump_in_progress()) {
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error_setg(errp, "There is a dump in process, please wait.");
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return;
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}
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if (runstate_needs_reset()) {
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error_setg(errp, "Resetting the Virtual Machine is required");
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return;
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} else if (runstate_check(RUN_STATE_SUSPENDED)) {
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return;
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}
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for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
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blk_iostatus_reset(blk);
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}
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/* Continuing after completed migration. Images have been inactivated to
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* allow the destination to take control. Need to get control back now.
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*
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* If there are no inactive block nodes (e.g. because the VM was just
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* paused rather than completing a migration), bdrv_inactivate_all() simply
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* doesn't do anything. */
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bdrv_invalidate_cache_all(&local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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if (runstate_check(RUN_STATE_INMIGRATE)) {
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autostart = 1;
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} else {
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vm_start();
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}
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}
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void qmp_system_wakeup(Error **errp)
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{
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if (!qemu_wakeup_suspend_enabled()) {
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error_setg(errp,
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"wake-up from suspend is not supported by this guest");
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return;
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}
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qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, errp);
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}
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ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
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{
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Object *obj;
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bool ambiguous = false;
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ObjectPropertyInfoList *props = NULL;
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ObjectProperty *prop;
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ObjectPropertyIterator iter;
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obj = object_resolve_path(path, &ambiguous);
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if (obj == NULL) {
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if (ambiguous) {
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error_setg(errp, "Path '%s' is ambiguous", path);
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} else {
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error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
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"Device '%s' not found", path);
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}
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return NULL;
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}
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object_property_iter_init(&iter, obj);
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while ((prop = object_property_iter_next(&iter))) {
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ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));
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entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
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entry->next = props;
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props = entry;
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entry->value->name = g_strdup(prop->name);
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entry->value->type = g_strdup(prop->type);
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}
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return props;
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}
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void qmp_qom_set(const char *path, const char *property, QObject *value,
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Error **errp)
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{
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Object *obj;
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obj = object_resolve_path(path, NULL);
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if (!obj) {
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error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
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"Device '%s' not found", path);
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return;
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}
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object_property_set_qobject(obj, value, property, errp);
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}
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QObject *qmp_qom_get(const char *path, const char *property, Error **errp)
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{
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Object *obj;
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obj = object_resolve_path(path, NULL);
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if (!obj) {
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error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
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"Device '%s' not found", path);
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return NULL;
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}
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return object_property_get_qobject(obj, property, errp);
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}
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void qmp_set_password(const char *protocol, const char *password,
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bool has_connected, const char *connected, Error **errp)
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{
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int disconnect_if_connected = 0;
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int fail_if_connected = 0;
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int rc;
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if (has_connected) {
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if (strcmp(connected, "fail") == 0) {
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fail_if_connected = 1;
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} else if (strcmp(connected, "disconnect") == 0) {
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disconnect_if_connected = 1;
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} else if (strcmp(connected, "keep") == 0) {
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/* nothing */
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} else {
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error_setg(errp, QERR_INVALID_PARAMETER, "connected");
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return;
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}
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}
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if (strcmp(protocol, "spice") == 0) {
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if (!qemu_using_spice(errp)) {
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return;
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}
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rc = qemu_spice_set_passwd(password, fail_if_connected,
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disconnect_if_connected);
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if (rc != 0) {
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error_setg(errp, QERR_SET_PASSWD_FAILED);
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}
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return;
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}
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if (strcmp(protocol, "vnc") == 0) {
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if (fail_if_connected || disconnect_if_connected) {
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/* vnc supports "connected=keep" only */
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error_setg(errp, QERR_INVALID_PARAMETER, "connected");
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return;
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}
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/* Note that setting an empty password will not disable login through
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* this interface. */
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rc = vnc_display_password(NULL, password);
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if (rc < 0) {
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error_setg(errp, QERR_SET_PASSWD_FAILED);
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}
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return;
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}
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error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
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}
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void qmp_expire_password(const char *protocol, const char *whenstr,
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Error **errp)
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{
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time_t when;
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int rc;
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if (strcmp(whenstr, "now") == 0) {
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when = 0;
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} else if (strcmp(whenstr, "never") == 0) {
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when = TIME_MAX;
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} else if (whenstr[0] == '+') {
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when = time(NULL) + strtoull(whenstr+1, NULL, 10);
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} else {
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when = strtoull(whenstr, NULL, 10);
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}
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if (strcmp(protocol, "spice") == 0) {
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if (!qemu_using_spice(errp)) {
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return;
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}
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rc = qemu_spice_set_pw_expire(when);
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if (rc != 0) {
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error_setg(errp, QERR_SET_PASSWD_FAILED);
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}
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return;
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}
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if (strcmp(protocol, "vnc") == 0) {
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rc = vnc_display_pw_expire(NULL, when);
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if (rc != 0) {
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error_setg(errp, QERR_SET_PASSWD_FAILED);
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}
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return;
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}
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error_setg(errp, QERR_INVALID_PARAMETER, "protocol");
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}
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#ifdef CONFIG_VNC
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void qmp_change_vnc_password(const char *password, Error **errp)
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{
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if (vnc_display_password(NULL, password) < 0) {
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error_setg(errp, QERR_SET_PASSWD_FAILED);
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}
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}
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static void qmp_change_vnc_listen(const char *target, Error **errp)
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{
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QemuOptsList *olist = qemu_find_opts("vnc");
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QemuOpts *opts;
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if (strstr(target, "id=")) {
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error_setg(errp, "id not supported");
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return;
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}
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opts = qemu_opts_find(olist, "default");
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if (opts) {
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qemu_opts_del(opts);
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}
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opts = vnc_parse(target, errp);
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if (!opts) {
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return;
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}
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vnc_display_open("default", errp);
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}
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static void qmp_change_vnc(const char *target, bool has_arg, const char *arg,
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Error **errp)
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{
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if (strcmp(target, "passwd") == 0 || strcmp(target, "password") == 0) {
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if (!has_arg) {
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error_setg(errp, QERR_MISSING_PARAMETER, "password");
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} else {
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qmp_change_vnc_password(arg, errp);
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}
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} else {
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qmp_change_vnc_listen(target, errp);
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}
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}
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#endif /* !CONFIG_VNC */
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void qmp_change(const char *device, const char *target,
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bool has_arg, const char *arg, Error **errp)
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{
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if (strcmp(device, "vnc") == 0) {
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#ifdef CONFIG_VNC
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qmp_change_vnc(target, has_arg, arg, errp);
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#else
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error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
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#endif
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} else {
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qmp_blockdev_change_medium(true, device, false, NULL, target,
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has_arg, arg, false, 0, errp);
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}
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}
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static void qom_list_types_tramp(ObjectClass *klass, void *data)
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{
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ObjectTypeInfoList *e, **pret = data;
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ObjectTypeInfo *info;
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ObjectClass *parent = object_class_get_parent(klass);
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info = g_malloc0(sizeof(*info));
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info->name = g_strdup(object_class_get_name(klass));
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info->has_abstract = info->abstract = object_class_is_abstract(klass);
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if (parent) {
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info->has_parent = true;
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info->parent = g_strdup(object_class_get_name(parent));
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}
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e = g_malloc0(sizeof(*e));
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e->value = info;
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e->next = *pret;
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*pret = e;
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}
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ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
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const char *implements,
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bool has_abstract,
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bool abstract,
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Error **errp)
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{
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ObjectTypeInfoList *ret = NULL;
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object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);
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return ret;
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}
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/* Return a DevicePropertyInfo for a qdev property.
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*
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* If a qdev property with the given name does not exist, use the given default
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* type. If the qdev property info should not be shown, return NULL.
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*
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* The caller must free the return value.
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*/
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static ObjectPropertyInfo *make_device_property_info(ObjectClass *klass,
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const char *name,
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const char *default_type,
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const char *description)
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{
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ObjectPropertyInfo *info;
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Property *prop;
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do {
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for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
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if (strcmp(name, prop->name) != 0) {
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continue;
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}
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/*
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* TODO Properties without a parser are just for dirty hacks.
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* qdev_prop_ptr is the only such PropertyInfo. It's marked
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* for removal. This conditional should be removed along with
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* it.
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*/
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if (!prop->info->set && !prop->info->create) {
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return NULL; /* no way to set it, don't show */
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}
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info = g_malloc0(sizeof(*info));
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info->name = g_strdup(prop->name);
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info->type = default_type ? g_strdup(default_type)
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: g_strdup(prop->info->name);
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info->has_description = !!prop->info->description;
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info->description = g_strdup(prop->info->description);
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return info;
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}
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klass = object_class_get_parent(klass);
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} while (klass != object_class_by_name(TYPE_DEVICE));
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/* Not a qdev property, use the default type */
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info = g_malloc0(sizeof(*info));
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info->name = g_strdup(name);
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info->type = g_strdup(default_type);
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info->has_description = !!description;
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info->description = g_strdup(description);
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return info;
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}
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|
ObjectPropertyInfoList *qmp_device_list_properties(const char *typename,
|
|
Error **errp)
|
|
{
|
|
ObjectClass *klass;
|
|
Object *obj;
|
|
ObjectProperty *prop;
|
|
ObjectPropertyIterator iter;
|
|
ObjectPropertyInfoList *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, "typename", TYPE_DEVICE);
|
|
return NULL;
|
|
}
|
|
|
|
if (object_class_is_abstract(klass)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
|
|
"non-abstract device type");
|
|
return NULL;
|
|
}
|
|
|
|
obj = object_new(typename);
|
|
|
|
object_property_iter_init(&iter, obj);
|
|
while ((prop = object_property_iter_next(&iter))) {
|
|
ObjectPropertyInfo *info;
|
|
ObjectPropertyInfoList *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;
|
|
}
|
|
|
|
ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
|
|
Error **errp)
|
|
{
|
|
ObjectClass *klass;
|
|
Object *obj = NULL;
|
|
ObjectProperty *prop;
|
|
ObjectPropertyIterator iter;
|
|
ObjectPropertyInfoList *prop_list = NULL;
|
|
|
|
klass = object_class_by_name(typename);
|
|
if (klass == NULL) {
|
|
error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
|
|
"Class '%s' not found", typename);
|
|
return NULL;
|
|
}
|
|
|
|
klass = object_class_dynamic_cast(klass, TYPE_OBJECT);
|
|
if (klass == NULL) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_OBJECT);
|
|
return NULL;
|
|
}
|
|
|
|
if (object_class_is_abstract(klass)) {
|
|
object_class_property_iter_init(&iter, klass);
|
|
} else {
|
|
obj = object_new(typename);
|
|
object_property_iter_init(&iter, obj);
|
|
}
|
|
while ((prop = object_property_iter_next(&iter))) {
|
|
ObjectPropertyInfo *info;
|
|
ObjectPropertyInfoList *entry;
|
|
|
|
info = g_malloc0(sizeof(*info));
|
|
info->name = g_strdup(prop->name);
|
|
info->type = g_strdup(prop->type);
|
|
info->has_description = !!prop->description;
|
|
info->description = g_strdup(prop->description);
|
|
|
|
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)
|
|
{
|
|
Chardev *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;
|
|
}
|
|
qobject_ref(pdict);
|
|
} else {
|
|
pdict = qdict_new();
|
|
}
|
|
|
|
v = qobject_input_visitor_new(QOBJECT(pdict));
|
|
obj = user_creatable_add_type(type, id, pdict, v, errp);
|
|
visit_free(v);
|
|
if (obj) {
|
|
object_unref(obj);
|
|
}
|
|
qobject_unref(pdict);
|
|
}
|
|
|
|
void qmp_object_del(const char *id, Error **errp)
|
|
{
|
|
user_creatable_del(id, errp);
|
|
}
|
|
|
|
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;
|
|
}
|