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![Daniel P. Berrange](/assets/img/avatar_default.png)
The QMP monitor code has two helper methods object_add and qmp_object_del that are called from several places in the code (QMP, HMP and main emulator startup). The HMP and main emulator startup code also share further logic that extracts the qom-type & id values from a qdict. We soon need to use this logic from qemu-img, qemu-io and qemu-nbd too, but don't want those to depend on the monitor, nor do we want to duplicate the code. To avoid this, move some code out of qmp.c and hmp.c adding new methods to qom/object_interfaces.c - user_creatable_add - takes a QDict holding a full object definition & instantiates it - user_creatable_add_type - takes an ID, type name, and QDict holding object properties & instantiates it - user_creatable_add_opts - takes a QemuOpts holding a full object definition & instantiates it - user_creatable_add_opts_foreach - variant on user_creatable_add_opts which can be directly used in conjunction with qemu_opts_foreach. - user_creatable_del - takes an ID and deletes the corresponding object The existing code is updated to use these new methods. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1455129674-17255-2-git-send-email-berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
694 lines
18 KiB
C
694 lines
18 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-common.h"
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#include "monitor/monitor.h"
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#include "sysemu/sysemu.h"
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#include "qmp-commands.h"
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#include "sysemu/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/qmp/qerror.h"
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#include "qapi/qmp/qobject.h"
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#include "qapi/qmp-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/pc-dimm.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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const char *version = QEMU_VERSION;
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const char *tmp;
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int err;
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info->qemu = g_new0(VersionTriple, 1);
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err = qemu_strtoll(version, &tmp, 10, &info->qemu->major);
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assert(err == 0);
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tmp++;
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err = qemu_strtoll(tmp, &tmp, 10, &info->qemu->minor);
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assert(err == 0);
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tmp++;
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err = qemu_strtoll(tmp, &tmp, 10, &info->qemu->micro);
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assert(err == 0);
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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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char uuid[64];
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snprintf(uuid, sizeof(uuid), UUID_FMT, qemu_uuid[0], qemu_uuid[1],
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qemu_uuid[2], qemu_uuid[3], qemu_uuid[4], qemu_uuid[5],
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qemu_uuid[6], qemu_uuid[7], qemu_uuid[8], qemu_uuid[9],
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qemu_uuid[10], qemu_uuid[11], qemu_uuid[12], qemu_uuid[13],
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qemu_uuid[14], qemu_uuid[15]);
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info->UUID = g_strdup(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();
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}
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void qmp_stop(Error **errp)
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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();
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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(int64_t index, Error **errp)
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{
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/* Just do nothing */
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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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#ifndef CONFIG_VNC
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/* If VNC support is enabled, the "true" query-vnc command is
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defined in the VNC subsystem */
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VncInfo *qmp_query_vnc(Error **errp)
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{
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error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
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return NULL;
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};
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VncInfo2List *qmp_query_vnc_servers(Error **errp)
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{
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error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
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return NULL;
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};
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#endif
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#ifndef CONFIG_SPICE
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/*
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* qmp-commands.hx ensures that QMP command query-spice exists only
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* #ifdef CONFIG_SPICE. Necessary for an accurate query-commands
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* result. However, the QAPI schema is blissfully unaware of that,
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* and the QAPI code generator happily generates a dead
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* qmp_marshal_query_spice() that calls qmp_query_spice(). Provide it
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* one, or else linking fails. FIXME Educate the QAPI schema on
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* CONFIG_SPICE.
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*/
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SpiceInfo *qmp_query_spice(Error **errp)
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{
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abort();
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};
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#endif
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void qmp_cont(Error **errp)
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{
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Error *local_err = NULL;
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BlockBackend *blk;
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BlockDriverState *bs;
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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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for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
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bdrv_add_key(bs, NULL, &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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}
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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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if (runstate_check(RUN_STATE_FINISH_MIGRATE) ||
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runstate_check(RUN_STATE_POSTMIGRATE))
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{
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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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}
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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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qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
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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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#else
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void qmp_change_vnc_password(const char *password, Error **errp)
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{
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error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
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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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error_setg(errp, QERR_FEATURE_DISABLED, "vnc");
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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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qmp_change_vnc(target, has_arg, arg, errp);
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} else {
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qmp_blockdev_change_medium(device, target, has_arg, arg, false, 0,
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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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info = g_malloc0(sizeof(*info));
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info->name = g_strdup(object_class_get_name(klass));
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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 DevicePropertyInfo *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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DevicePropertyInfo *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) {
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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 = 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 */
|
|
info = g_malloc0(sizeof(*info));
|
|
info->name = g_strdup(name);
|
|
info->type = g_strdup(default_type);
|
|
info->has_description = !!description;
|
|
info->description = g_strdup(description);
|
|
|
|
return info;
|
|
}
|
|
|
|
DevicePropertyInfoList *qmp_device_list_properties(const char *typename,
|
|
Error **errp)
|
|
{
|
|
ObjectClass *klass;
|
|
Object *obj;
|
|
ObjectProperty *prop;
|
|
ObjectPropertyIterator iter;
|
|
DevicePropertyInfoList *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, "name", TYPE_DEVICE);
|
|
return NULL;
|
|
}
|
|
|
|
if (object_class_is_abstract(klass)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "name",
|
|
"non-abstract device type");
|
|
return NULL;
|
|
}
|
|
|
|
if (DEVICE_CLASS(klass)->cannot_destroy_with_object_finalize_yet) {
|
|
error_setg(errp, "Can't list properties of device '%s'", typename);
|
|
return NULL;
|
|
}
|
|
|
|
obj = object_new(typename);
|
|
|
|
object_property_iter_init(&iter, obj);
|
|
while ((prop = object_property_iter_next(&iter))) {
|
|
DevicePropertyInfo *info;
|
|
DevicePropertyInfoList *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;
|
|
}
|
|
|
|
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 (!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)
|
|
{
|
|
const QDict *pdict = NULL;
|
|
QmpInputVisitor *qiv;
|
|
Object *obj;
|
|
|
|
if (props) {
|
|
pdict = qobject_to_qdict(props);
|
|
if (!pdict) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
|
|
return;
|
|
}
|
|
}
|
|
|
|
qiv = qmp_input_visitor_new(props);
|
|
obj = user_creatable_add_type(type, id, pdict,
|
|
qmp_input_get_visitor(qiv), errp);
|
|
qmp_input_visitor_cleanup(qiv);
|
|
if (obj) {
|
|
object_unref(obj);
|
|
}
|
|
}
|
|
|
|
void qmp_object_del(const char *id, Error **errp)
|
|
{
|
|
user_creatable_del(id, errp);
|
|
}
|
|
|
|
MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp)
|
|
{
|
|
MemoryDeviceInfoList *head = NULL;
|
|
MemoryDeviceInfoList **prev = &head;
|
|
|
|
qmp_pc_dimm_device_list(qdev_get_machine(), &prev);
|
|
|
|
return head;
|
|
}
|
|
|
|
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;
|
|
}
|