@samitouri / QOSamiQemu
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1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #ifndef MIGRATION_QEMU_FILE_H
26 #define MIGRATION_QEMU_FILE_H
27
28 #include "exec/cpu-common.h"
29 #include "io/channel.h"
30
31 QEMUFile *qemu_file_new_input(QIOChannel *ioc);
32 QEMUFile *qemu_file_new_output(QIOChannel *ioc);
33 int qemu_fclose(QEMUFile *f);
34
35 G_DEFINE_AUTOPTR_CLEANUP_FUNC(QEMUFile, qemu_fclose)
36
37 /*
38 * qemu_file_transferred:
39 *
40 * No flush is performed and the reported amount will include the size
41 * of any queued buffers, on top of the amount actually transferred.
42 *
43 * Returns: the total bytes transferred and queued
44 */
45 uint64_t qemu_file_transferred(QEMUFile *f);
46
47 /*
48 * put_buffer without copying the buffer.
49 * The buffer should be available till it is sent asynchronously.
50 */
51 void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, size_t size,
52 bool may_free);
53
54 #include "migration/qemu-file-types.h"
55
56 size_t coroutine_mixed_fn qemu_peek_buffer(QEMUFile *f, uint8_t **buf, size_t size, size_t offset);
57 size_t coroutine_mixed_fn qemu_get_buffer_in_place(QEMUFile *f, uint8_t **buf, size_t size);
58
59 /*
60 * Note that you can only peek continuous bytes from where the current pointer
61 * is; you aren't guaranteed to be able to peak to +n bytes unless you've
62 * previously peeked +n-1.
63 */
64 int coroutine_mixed_fn qemu_peek_byte(QEMUFile *f, int offset);
65 void qemu_file_skip(QEMUFile *f, int size);
66 int qemu_file_get_error_obj_any(QEMUFile *f1, QEMUFile *f2, Error **errp);
67 void qemu_file_set_error_obj(QEMUFile *f, int ret, Error *err);
68 int qemu_file_get_error_obj(QEMUFile *f, Error **errp);
69 void qemu_file_set_error(QEMUFile *f, int ret);
70 int qemu_file_shutdown(QEMUFile *f);
71 QEMUFile *qemu_file_get_return_path(QEMUFile *f);
72 int qemu_fflush(QEMUFile *f);
73 bool qemu_file_set_blocking(QEMUFile *f, bool block, Error **errp);
74 int qemu_file_get_to_fd(QEMUFile *f, int fd, size_t size);
75 void qemu_set_offset(QEMUFile *f, off_t off, int whence);
76 off_t qemu_get_offset(QEMUFile *f);
77 void qemu_put_buffer_at(QEMUFile *f, const uint8_t *buf, size_t buflen,
78 off_t pos);
79 size_t qemu_get_buffer_at(QEMUFile *f, uint8_t *buf, size_t buflen, off_t pos,
80 Error **errp);
81
82 QIOChannel *qemu_file_get_ioc(QEMUFile *file);
83 int qemu_file_put_fd(QEMUFile *f, int fd);
84 int qemu_file_get_fd(QEMUFile *f, int *fd);
85
86 #endif