migration/savevm.h

/*
 * QEMU save vm functions
 *
 * Copyright (c) 2003-2008 Fabrice Bellard
 * Copyright (c) 2009-2017 Red Hat Inc
 *
 * Authors:
 *  Juan Quintela <quintela@redhat.com>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#ifndef MIGRATION_SAVEVM_H
#define MIGRATION_SAVEVM_H

#include "migration/register.h"

#define QEMU_VM_FILE_MAGIC           0x5145564d
#define QEMU_VM_FILE_VERSION_COMPAT  0x00000002
#define QEMU_VM_FILE_VERSION         0x00000003

#define QEMU_VM_EOF                  0x00
#define QEMU_VM_SECTION_START        0x01
#define QEMU_VM_SECTION_PART         0x02
#define QEMU_VM_SECTION_END          0x03
#define QEMU_VM_SECTION_FULL         0x04
#define QEMU_VM_SUBSECTION           0x05
#define QEMU_VM_VMDESCRIPTION        0x06
#define QEMU_VM_CONFIGURATION        0x07
#define QEMU_VM_COMMAND              0x08
#define QEMU_VM_SECTION_FOOTER       0x7e

#define QEMU_VM_PING_PACKAGED_LOADED 0x42

bool qemu_savevm_state_blocked(Error **errp);
void qemu_savevm_non_migratable_list(strList **reasons);
int qemu_savevm_state_prepare(Error **errp);
int qemu_savevm_state_do_setup(QEMUFile *f, Error **errp);
bool qemu_savevm_state_guest_unplug_pending(void);
int qemu_savevm_state_resume_prepare(MigrationState *s);
void qemu_savevm_send_header(QEMUFile *f);
void qemu_savevm_state_header(QEMUFile *f);
int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy);
void qemu_savevm_state_cleanup(void);
void qemu_savevm_state_complete_postcopy(QEMUFile *f);
bool qemu_savevm_state_complete_precopy(MigrationState *s, Error **errp);
void qemu_savevm_query_pending_iter(MigrationState *s, MigPendingData *pending,
                                    bool exact);
bool qemu_savevm_query_pending_final(MigrationState *s,
                                     MigPendingData *pending, Error **errp);
int qemu_savevm_state_complete_precopy_iterable(QEMUFile *f, bool in_postcopy);
bool qemu_savevm_state_postcopy_prepare(QEMUFile *f, Error **errp);
void qemu_savevm_state_end(QEMUFile *f);
void qemu_savevm_state_end_precopy(MigrationState *s, QEMUFile *f);
void qemu_savevm_send_ping(QEMUFile *f, uint32_t value);
void qemu_savevm_send_open_return_path(QEMUFile *f);
int qemu_savevm_send_packaged(QEMUFile *f, const uint8_t *buf, size_t len);
void qemu_savevm_send_postcopy_advise(QEMUFile *f);
void qemu_savevm_send_postcopy_listen(QEMUFile *f);
void qemu_savevm_send_postcopy_run(QEMUFile *f);
void qemu_savevm_send_postcopy_resume(QEMUFile *f);
void qemu_savevm_send_recv_bitmap(QEMUFile *f, char *block_name);
void qemu_savevm_maybe_send_switchover_start(QEMUFile *f);

void qemu_savevm_send_postcopy_ram_discard(QEMUFile *f, const char *name,
                                           uint16_t len,
                                           uint64_t *start_list,
                                           uint64_t *length_list);
int qemu_save_device_state(QEMUFile *f, Error **errp);
int qemu_loadvm_state(QEMUFile *f, Error **errp);
void qemu_loadvm_state_cleanup(MigrationIncomingState *mis);
void qemu_loadvm_run_fast_snapshot_load(QEMUFile *f,
                                        MigrationIncomingState *mis);
int qemu_loadvm_state_main(QEMUFile *f, MigrationIncomingState *mis,
                           Error **errp);
int qemu_load_device_state(QEMUFile *f, Error **errp);
int qemu_loadvm_approve_switchover(const char *approver);
bool qemu_savevm_state_non_iterable(QEMUFile *f, Error **errp);
int qemu_savevm_state_non_iterable_early(QEMUFile *f,
                                         JSONWriter *vmdesc,
                                         Error **errp);
bool qemu_loadvm_load_state_buffer(const char *idstr, uint32_t instance_id,
                                   char *buf, size_t len, Error **errp);

#endif