2012-01-13 17:07:20 +01:00
|
|
|
/*
|
|
|
|
* QEMU System Emulator
|
|
|
|
*
|
|
|
|
* Copyright (c) 2003-2008 Fabrice Bellard
|
|
|
|
*
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
*
|
|
|
|
* The above copyright notice and this permission notice shall be included in
|
|
|
|
* all copies or substantial portions of the Software.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
|
|
* THE SOFTWARE.
|
|
|
|
*/
|
2016-06-29 15:29:06 +02:00
|
|
|
|
2017-04-20 18:52:18 +02:00
|
|
|
#ifndef MIGRATION_QEMU_FILE_H
|
|
|
|
#define MIGRATION_QEMU_FILE_H
|
2014-10-10 13:39:04 +02:00
|
|
|
|
2018-03-30 09:51:20 +02:00
|
|
|
#include <zlib.h>
|
2019-08-12 07:23:43 +02:00
|
|
|
#include "exec/cpu-common.h"
|
2021-07-22 19:58:40 +02:00
|
|
|
#include "io/channel.h"
|
2018-03-30 09:51:20 +02:00
|
|
|
|
2013-06-26 03:35:35 +02:00
|
|
|
/*
|
|
|
|
* This function provides hooks around different
|
|
|
|
* stages of RAM migration.
|
2015-06-11 19:17:23 +02:00
|
|
|
* 'data' is call specific data associated with the 'flags' value
|
2013-06-26 03:35:35 +02:00
|
|
|
*/
|
2022-06-20 13:01:55 +02:00
|
|
|
typedef int (QEMURamHookFunc)(QEMUFile *f, uint64_t flags, void *data);
|
2013-06-26 03:35:35 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Constants used by ram_control_* hooks
|
|
|
|
*/
|
2015-06-11 19:17:23 +02:00
|
|
|
#define RAM_CONTROL_SETUP 0
|
|
|
|
#define RAM_CONTROL_ROUND 1
|
|
|
|
#define RAM_CONTROL_HOOK 2
|
|
|
|
#define RAM_CONTROL_FINISH 3
|
|
|
|
#define RAM_CONTROL_BLOCK_REG 4
|
2013-06-26 03:35:35 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* This function allows override of where the RAM page
|
|
|
|
* is saved (such as RDMA, for example.)
|
|
|
|
*/
|
2022-06-20 13:01:55 +02:00
|
|
|
typedef size_t (QEMURamSaveFunc)(QEMUFile *f,
|
|
|
|
ram_addr_t block_offset,
|
|
|
|
ram_addr_t offset,
|
|
|
|
size_t size,
|
|
|
|
uint64_t *bytes_sent);
|
2013-06-26 03:35:35 +02:00
|
|
|
|
2016-04-27 12:04:55 +02:00
|
|
|
typedef struct QEMUFileHooks {
|
2013-06-26 03:35:35 +02:00
|
|
|
QEMURamHookFunc *before_ram_iterate;
|
|
|
|
QEMURamHookFunc *after_ram_iterate;
|
|
|
|
QEMURamHookFunc *hook_ram_load;
|
|
|
|
QEMURamSaveFunc *save_page;
|
2016-04-27 12:04:55 +02:00
|
|
|
} QEMUFileHooks;
|
2012-08-08 10:15:15 +02:00
|
|
|
|
2022-06-20 13:02:05 +02:00
|
|
|
QEMUFile *qemu_file_new_input(QIOChannel *ioc);
|
|
|
|
QEMUFile *qemu_file_new_output(QIOChannel *ioc);
|
2016-04-27 12:04:55 +02:00
|
|
|
void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
|
2012-01-13 17:07:20 +01:00
|
|
|
int qemu_fclose(QEMUFile *f);
|
2022-06-20 13:01:50 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* qemu_file_total_transferred:
|
|
|
|
*
|
|
|
|
* Report the total number of bytes transferred with
|
|
|
|
* this file.
|
|
|
|
*
|
|
|
|
* For writable files, any pending buffers will be
|
|
|
|
* flushed, so the reported value will be equal to
|
|
|
|
* the number of bytes transferred on the wire.
|
|
|
|
*
|
|
|
|
* For readable files, the reported value will be
|
|
|
|
* equal to the number of bytes transferred on the
|
|
|
|
* wire.
|
|
|
|
*
|
|
|
|
* Returns: the total bytes transferred
|
|
|
|
*/
|
|
|
|
int64_t qemu_file_total_transferred(QEMUFile *f);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* qemu_file_total_transferred_fast:
|
|
|
|
*
|
|
|
|
* As qemu_file_total_transferred except for writable
|
|
|
|
* files, where no flush is performed and the reported
|
|
|
|
* amount will include the size of any queued buffers,
|
|
|
|
* on top of the amount actually transferred.
|
|
|
|
*
|
|
|
|
* Returns: the total bytes transferred and queued
|
|
|
|
*/
|
|
|
|
int64_t qemu_file_total_transferred_fast(QEMUFile *f);
|
|
|
|
|
2013-03-22 15:48:02 +01:00
|
|
|
/*
|
|
|
|
* put_buffer without copying the buffer.
|
|
|
|
* The buffer should be available till it is sent asynchronously.
|
|
|
|
*/
|
2017-02-03 16:23:20 +01:00
|
|
|
void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, size_t size,
|
|
|
|
bool may_free);
|
2013-06-26 03:35:31 +02:00
|
|
|
bool qemu_file_mode_is_not_valid(const char *mode);
|
2014-10-01 22:34:34 +02:00
|
|
|
bool qemu_file_is_writable(QEMUFile *f);
|
2012-01-13 17:07:20 +01:00
|
|
|
|
2017-04-20 18:52:18 +02:00
|
|
|
#include "migration/qemu-file-types.h"
|
2014-10-10 13:39:04 +02:00
|
|
|
|
2022-12-16 12:48:16 +01:00
|
|
|
size_t coroutine_mixed_fn qemu_peek_buffer(QEMUFile *f, uint8_t **buf, size_t size, size_t offset);
|
|
|
|
size_t coroutine_mixed_fn qemu_get_buffer_in_place(QEMUFile *f, uint8_t **buf, size_t size);
|
2018-03-30 09:51:20 +02:00
|
|
|
ssize_t qemu_put_compression_data(QEMUFile *f, z_stream *stream,
|
|
|
|
const uint8_t *p, size_t size);
|
2015-03-23 09:32:19 +01:00
|
|
|
int qemu_put_qemu_file(QEMUFile *f_des, QEMUFile *f_src);
|
2015-11-05 19:10:35 +01:00
|
|
|
|
2014-04-08 16:29:37 +02:00
|
|
|
/*
|
|
|
|
* Note that you can only peek continuous bytes from where the current pointer
|
|
|
|
* is; you aren't guaranteed to be able to peak to +n bytes unless you've
|
|
|
|
* previously peeked +n-1.
|
|
|
|
*/
|
2022-12-16 12:48:16 +01:00
|
|
|
int coroutine_mixed_fn qemu_peek_byte(QEMUFile *f, int offset);
|
2013-11-28 15:01:10 +01:00
|
|
|
void qemu_file_skip(QEMUFile *f, int size);
|
2022-06-20 13:01:51 +02:00
|
|
|
/*
|
|
|
|
* qemu_file_credit_transfer:
|
|
|
|
*
|
|
|
|
* Report on a number of bytes that have been transferred
|
|
|
|
* out of band from the main file object I/O methods. This
|
|
|
|
* accounting information tracks the total migration traffic.
|
|
|
|
*/
|
|
|
|
void qemu_file_credit_transfer(QEMUFile *f, size_t size);
|
2013-02-22 17:36:45 +01:00
|
|
|
void qemu_file_reset_rate_limit(QEMUFile *f);
|
2022-06-20 13:01:52 +02:00
|
|
|
/*
|
|
|
|
* qemu_file_acct_rate_limit:
|
|
|
|
*
|
|
|
|
* Report on a number of bytes the have been transferred
|
|
|
|
* out of band from the main file object I/O methods, and
|
|
|
|
* need to be applied to the rate limiting calcuations
|
|
|
|
*/
|
|
|
|
void qemu_file_acct_rate_limit(QEMUFile *f, int64_t len);
|
2013-02-22 17:36:45 +01:00
|
|
|
void qemu_file_set_rate_limit(QEMUFile *f, int64_t new_rate);
|
2012-01-13 17:07:20 +01:00
|
|
|
int64_t qemu_file_get_rate_limit(QEMUFile *f);
|
2019-04-22 12:34:20 +02:00
|
|
|
int qemu_file_get_error_obj(QEMUFile *f, Error **errp);
|
2022-07-07 20:55:06 +02:00
|
|
|
int qemu_file_get_error_obj_any(QEMUFile *f1, QEMUFile *f2, Error **errp);
|
2019-04-22 12:34:20 +02:00
|
|
|
void qemu_file_set_error_obj(QEMUFile *f, int ret, Error *err);
|
2013-11-28 15:01:10 +01:00
|
|
|
void qemu_file_set_error(QEMUFile *f, int ret);
|
2015-01-08 12:11:30 +01:00
|
|
|
int qemu_file_shutdown(QEMUFile *f);
|
2015-11-05 19:10:43 +01:00
|
|
|
QEMUFile *qemu_file_get_return_path(QEMUFile *f);
|
2013-06-26 03:35:32 +02:00
|
|
|
void qemu_fflush(QEMUFile *f);
|
2015-11-05 19:10:36 +01:00
|
|
|
void qemu_file_set_blocking(QEMUFile *f, bool block);
|
2023-02-09 20:20:35 +01:00
|
|
|
int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size);
|
2012-01-13 17:07:20 +01:00
|
|
|
|
2017-04-24 18:24:28 +02:00
|
|
|
void ram_control_before_iterate(QEMUFile *f, uint64_t flags);
|
|
|
|
void ram_control_after_iterate(QEMUFile *f, uint64_t flags);
|
|
|
|
void ram_control_load_hook(QEMUFile *f, uint64_t flags, void *data);
|
|
|
|
|
|
|
|
/* Whenever this is found in the data stream, the flags
|
|
|
|
* will be passed to ram_control_load_hook in the incoming-migration
|
|
|
|
* side. This lets before_ram_iterate/after_ram_iterate add
|
|
|
|
* transport-specific sections to the RAM migration data.
|
|
|
|
*/
|
|
|
|
#define RAM_SAVE_FLAG_HOOK 0x80
|
|
|
|
|
|
|
|
#define RAM_SAVE_CONTROL_NOT_SUPP -1000
|
|
|
|
#define RAM_SAVE_CONTROL_DELAYED -2000
|
|
|
|
|
|
|
|
size_t ram_control_save_page(QEMUFile *f, ram_addr_t block_offset,
|
|
|
|
ram_addr_t offset, size_t size,
|
|
|
|
uint64_t *bytes_sent);
|
2021-07-22 19:58:40 +02:00
|
|
|
QIOChannel *qemu_file_get_ioc(QEMUFile *file);
|
2017-04-20 18:52:18 +02:00
|
|
|
|
2012-01-13 17:07:20 +01:00
|
|
|
#endif
|