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1 | /* |
2 | * QEMU I/O channels block driver | |
3 | * | |
4 | * Copyright (c) 2022 Red Hat, Inc. | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
18 | * | |
19 | */ | |
20 | ||
21 | #ifndef QIO_CHANNEL_BLOCK_H | |
22 | #define QIO_CHANNEL_BLOCK_H | |
23 | ||
24 | #include "io/channel.h" | |
25 | #include "qom/object.h" | |
26 | ||
27 | #define TYPE_QIO_CHANNEL_BLOCK "qio-channel-block" | |
28 | OBJECT_DECLARE_SIMPLE_TYPE(QIOChannelBlock, QIO_CHANNEL_BLOCK) | |
29 | ||
30 | ||
31 | /** | |
32 | * QIOChannelBlock: | |
33 | * | |
34 | * The QIOChannelBlock object provides a channel implementation | |
35 | * that is able to perform I/O on the BlockDriverState objects | |
36 | * to the VMState region. | |
37 | */ | |
38 | ||
39 | struct QIOChannelBlock { | |
40 | QIOChannel parent; | |
41 | BlockDriverState *bs; | |
42 | off_t offset; | |
43 | }; | |
44 | ||
45 | ||
46 | /** | |
47 | * qio_channel_block_new: | |
48 | * @bs: the block driver state | |
49 | * | |
50 | * Create a new IO channel object that can perform | |
51 | * I/O on a BlockDriverState object to the VMState | |
52 | * region | |
53 | * | |
54 | * Returns: the new channel object | |
55 | */ | |
56 | QIOChannelBlock * | |
57 | qio_channel_block_new(BlockDriverState *bs); | |
58 | ||
59 | #endif /* QIO_CHANNEL_BLOCK_H */ |