1/*
2 * Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30#include <ext4_config.h>
31#include <ext4_blockdev.h>
32#include <ext4_errno.h>
33
34
35/**********************BLOCKDEV INTERFACE**************************************/
36static int blockdev_open(struct ext4_blockdev *bdev);
37static int blockdev_bread(struct ext4_blockdev *bdev, void *buf, uint64_t blk_id,
38 uint32_t blk_cnt);
39static int blockdev_bwrite(struct ext4_blockdev *bdev, const void *buf,
40 uint64_t blk_id, uint32_t blk_cnt);
41static int blockdev_close(struct ext4_blockdev *bdev);
42static int blockdev_lock(struct ext4_blockdev *bdev);
43static int blockdev_unlock(struct ext4_blockdev *bdev);
44
45/******************************************************************************/
46EXT4_BLOCKDEV_STATIC_INSTANCE(blockdev, 512, 0, blockdev_open,
47 blockdev_bread, blockdev_bwrite, blockdev_close,
48 blockdev_lock, blockdev_unlock);
49
50/******************************************************************************/
51static int blockdev_open(struct ext4_blockdev *bdev)
52{
53 /*blockdev_open: skeleton*/
54 return EIO;
55}
56
57/******************************************************************************/
58
59static int blockdev_bread(struct ext4_blockdev *bdev, void *buf, uint64_t blk_id,
60 uint32_t blk_cnt)
61{
62 /*blockdev_bread: skeleton*/
63 return EIO;
64}
65
66
67/******************************************************************************/
68static int blockdev_bwrite(struct ext4_blockdev *bdev, const void *buf,
69 uint64_t blk_id, uint32_t blk_cnt)
70{
71 /*blockdev_bwrite: skeleton*/
72 return EIO;
73}
74/******************************************************************************/
75static int blockdev_close(struct ext4_blockdev *bdev)
76{
77 /*blockdev_close: skeleton*/
78 return EIO;
79}
80
81static int blockdev_lock(struct ext4_blockdev *bdev)
82{
83 /*blockdev_lock: skeleton*/
84 return EIO;
85}
86
87static int blockdev_unlock(struct ext4_blockdev *bdev)
88{
89 /*blockdev_unlock: skeleton*/
90 return EIO;
91}
92
93/******************************************************************************/
94struct ext4_blockdev *ext4_blockdev_get(void)
95{
96 return &blockdev;
97}
98/******************************************************************************/
99
100