aboutsummaryrefslogtreecommitdiffstats
path: root/block/raw.c
blob: 1cdac0ccdc2f0f2b8197e2a41db69ad8428bb3e5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
#include "qemu-common.h"
#include "block_int.h"
#include "module.h"

static int raw_open(BlockDriverState *bs, int flags)
{
    bs->sg = bs->file->sg;
    return 0;
}

static int coroutine_fn raw_co_readv(BlockDriverState *bs, int64_t sector_num,
                                     int nb_sectors, QEMUIOVector *qiov)
{
    return bdrv_co_readv(bs->file, sector_num, nb_sectors, qiov);
}

static int coroutine_fn raw_co_writev(BlockDriverState *bs, int64_t sector_num,
                                      int nb_sectors, QEMUIOVector *qiov)
{
    return bdrv_co_writev(bs->file, sector_num, nb_sectors, qiov);
}

static void raw_close(BlockDriverState *bs)
{
}

static int coroutine_fn raw_co_flush(BlockDriverState *bs)
{
    return bdrv_co_flush(bs->file);
}

static int64_t raw_getlength(BlockDriverState *bs)
{
    return bdrv_getlength(bs->file);
}

static int raw_truncate(BlockDriverState *bs, int64_t offset)
{
    return bdrv_truncate(bs->file, offset);
}

static int raw_probe(const uint8_t *buf, int buf_size, const char *filename)
{
   return 1; /* everything can be opened as raw image */
}

static int coroutine_fn raw_co_discard(BlockDriverState *bs,
                                       int64_t sector_num, int nb_sectors)
{
    return bdrv_co_discard(bs->file, sector_num, nb_sectors);
}

static int raw_is_inserted(BlockDriverState *bs)
{
    return bdrv_is_inserted(bs->file);
}

static int raw_media_changed(BlockDriverState *bs)
{
    return bdrv_media_changed(bs->file);
}

static void raw_eject(BlockDriverState *bs, bool eject_flag)
{
    bdrv_eject(bs->file, eject_flag);
}

static void raw_lock_medium(BlockDriverState *bs, bool locked)
{
    bdrv_lock_medium(bs->file, locked);
}

static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
{
   return bdrv_ioctl(bs->file, req, buf);
}

static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs,
        unsigned long int req, void *buf,
        BlockDriverCompletionFunc *cb, void *opaque)
{
   return bdrv_aio_ioctl(bs->file, req, buf, cb, opaque);
}

static int raw_create(const char *filename, QEMUOptionParameter *options)
{
    return bdrv_create_file(filename, options);
}

static QEMUOptionParameter raw_create_options[] = {
    {
        .name = BLOCK_OPT_SIZE,
        .type = OPT_SIZE,
        .help = "Virtual disk size"
    },
    { NULL }
};

static int raw_has_zero_init(BlockDriverState *bs)
{
    return bdrv_has_zero_init(bs->file);
}

static BlockDriver bdrv_raw = {
    .format_name        = "raw",

    /* It's really 0, but we need to make g_malloc() happy */
    .instance_size      = 1,

    .bdrv_open          = raw_open,
    .bdrv_close         = raw_close,

    .bdrv_co_readv          = raw_co_readv,
    .bdrv_co_writev         = raw_co_writev,
    .bdrv_co_flush_to_disk  = raw_co_flush,
    .bdrv_co_discard        = raw_co_discard,

    .bdrv_probe         = raw_probe,
    .bdrv_getlength     = raw_getlength,
    .bdrv_truncate      = raw_truncate,

    .bdrv_is_inserted   = raw_is_inserted,
    .bdrv_media_changed = raw_media_changed,
    .bdrv_eject         = raw_eject,
    .bdrv_lock_medium   = raw_lock_medium,

    .bdrv_ioctl         = raw_ioctl,
    .bdrv_aio_ioctl     = raw_aio_ioctl,

    .bdrv_create        = raw_create,
    .create_options     = raw_create_options,
    .bdrv_has_zero_init = raw_has_zero_init,
};

static void bdrv_raw_init(void)
{
    bdrv_register(&bdrv_raw);
}

block_init(bdrv_raw_init);