7f5b50a401
Add utility methods that will be needed when implementing 'mapped-ram' migration capability. Signed-off-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: "Daniel P. Berrangé" <berrange@redhat.com> Link: https://lore.kernel.org/r/20240229153017.2221-7-farosas@suse.de Signed-off-by: Peter Xu <peterx@redhat.com>
88 lines
3.4 KiB
C
88 lines
3.4 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MIGRATION_QEMU_FILE_H
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#define MIGRATION_QEMU_FILE_H
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#include <zlib.h>
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#include "exec/cpu-common.h"
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#include "io/channel.h"
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QEMUFile *qemu_file_new_input(QIOChannel *ioc);
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QEMUFile *qemu_file_new_output(QIOChannel *ioc);
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int qemu_fclose(QEMUFile *f);
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/*
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* qemu_file_transferred:
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*
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* No flush is performed and the reported amount will include the size
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* of any queued buffers, on top of the amount actually transferred.
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*
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* Returns: the total bytes transferred and queued
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*/
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uint64_t qemu_file_transferred(QEMUFile *f);
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/*
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* put_buffer without copying the buffer.
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* The buffer should be available till it is sent asynchronously.
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*/
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void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, size_t size,
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bool may_free);
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#include "migration/qemu-file-types.h"
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size_t coroutine_mixed_fn qemu_peek_buffer(QEMUFile *f, uint8_t **buf, size_t size, size_t offset);
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size_t coroutine_mixed_fn qemu_get_buffer_in_place(QEMUFile *f, uint8_t **buf, size_t size);
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ssize_t qemu_put_compression_data(QEMUFile *f, z_stream *stream,
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const uint8_t *p, size_t size);
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int qemu_put_qemu_file(QEMUFile *f_des, QEMUFile *f_src);
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bool qemu_file_buffer_empty(QEMUFile *file);
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/*
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* Note that you can only peek continuous bytes from where the current pointer
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* is; you aren't guaranteed to be able to peak to +n bytes unless you've
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* previously peeked +n-1.
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*/
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int coroutine_mixed_fn qemu_peek_byte(QEMUFile *f, int offset);
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void qemu_file_skip(QEMUFile *f, int size);
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int qemu_file_get_error_obj_any(QEMUFile *f1, QEMUFile *f2, Error **errp);
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void qemu_file_set_error_obj(QEMUFile *f, int ret, Error *err);
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int qemu_file_get_error_obj(QEMUFile *f, Error **errp);
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void qemu_file_set_error(QEMUFile *f, int ret);
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int qemu_file_shutdown(QEMUFile *f);
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QEMUFile *qemu_file_get_return_path(QEMUFile *f);
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int qemu_fflush(QEMUFile *f);
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void qemu_file_set_blocking(QEMUFile *f, bool block);
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int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size);
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void qemu_set_offset(QEMUFile *f, off_t off, int whence);
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off_t qemu_get_offset(QEMUFile *f);
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void qemu_put_buffer_at(QEMUFile *f, const uint8_t *buf, size_t buflen,
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off_t pos);
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size_t qemu_get_buffer_at(QEMUFile *f, const uint8_t *buf, size_t buflen,
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off_t pos);
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QIOChannel *qemu_file_get_ioc(QEMUFile *file);
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#endif
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