root / block / raw.c @ 4265d620
History | View | Annotate | Download (3.4 kB)
1 |
|
---|---|
2 |
#include "qemu-common.h" |
3 |
#include "block_int.h" |
4 |
#include "module.h" |
5 |
|
6 |
static int raw_open(BlockDriverState *bs, int flags) |
7 |
{ |
8 |
bs->sg = bs->file->sg; |
9 |
return 0; |
10 |
} |
11 |
|
12 |
static int coroutine_fn raw_co_readv(BlockDriverState *bs, int64_t sector_num, |
13 |
int nb_sectors, QEMUIOVector *qiov)
|
14 |
{ |
15 |
return bdrv_co_readv(bs->file, sector_num, nb_sectors, qiov);
|
16 |
} |
17 |
|
18 |
static int coroutine_fn raw_co_writev(BlockDriverState *bs, int64_t sector_num, |
19 |
int nb_sectors, QEMUIOVector *qiov)
|
20 |
{ |
21 |
return bdrv_co_writev(bs->file, sector_num, nb_sectors, qiov);
|
22 |
} |
23 |
|
24 |
static void raw_close(BlockDriverState *bs) |
25 |
{ |
26 |
} |
27 |
|
28 |
static int coroutine_fn raw_co_flush(BlockDriverState *bs) |
29 |
{ |
30 |
return bdrv_co_flush(bs->file);
|
31 |
} |
32 |
|
33 |
static int64_t raw_getlength(BlockDriverState *bs)
|
34 |
{ |
35 |
return bdrv_getlength(bs->file);
|
36 |
} |
37 |
|
38 |
static int raw_truncate(BlockDriverState *bs, int64_t offset) |
39 |
{ |
40 |
return bdrv_truncate(bs->file, offset);
|
41 |
} |
42 |
|
43 |
static int raw_probe(const uint8_t *buf, int buf_size, const char *filename) |
44 |
{ |
45 |
return 1; /* everything can be opened as raw image */ |
46 |
} |
47 |
|
48 |
static int coroutine_fn raw_co_discard(BlockDriverState *bs, |
49 |
int64_t sector_num, int nb_sectors)
|
50 |
{ |
51 |
return bdrv_co_discard(bs->file, sector_num, nb_sectors);
|
52 |
} |
53 |
|
54 |
static int raw_is_inserted(BlockDriverState *bs) |
55 |
{ |
56 |
return bdrv_is_inserted(bs->file);
|
57 |
} |
58 |
|
59 |
static int raw_media_changed(BlockDriverState *bs) |
60 |
{ |
61 |
return bdrv_media_changed(bs->file);
|
62 |
} |
63 |
|
64 |
static void raw_eject(BlockDriverState *bs, int eject_flag) |
65 |
{ |
66 |
bdrv_eject(bs->file, eject_flag); |
67 |
} |
68 |
|
69 |
static void raw_lock_medium(BlockDriverState *bs, bool locked) |
70 |
{ |
71 |
bdrv_lock_medium(bs->file, locked); |
72 |
} |
73 |
|
74 |
static int raw_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) |
75 |
{ |
76 |
return bdrv_ioctl(bs->file, req, buf);
|
77 |
} |
78 |
|
79 |
static BlockDriverAIOCB *raw_aio_ioctl(BlockDriverState *bs,
|
80 |
unsigned long int req, void *buf, |
81 |
BlockDriverCompletionFunc *cb, void *opaque)
|
82 |
{ |
83 |
return bdrv_aio_ioctl(bs->file, req, buf, cb, opaque);
|
84 |
} |
85 |
|
86 |
static int raw_create(const char *filename, QEMUOptionParameter *options) |
87 |
{ |
88 |
return bdrv_create_file(filename, options);
|
89 |
} |
90 |
|
91 |
static QEMUOptionParameter raw_create_options[] = {
|
92 |
{ |
93 |
.name = BLOCK_OPT_SIZE, |
94 |
.type = OPT_SIZE, |
95 |
.help = "Virtual disk size"
|
96 |
}, |
97 |
{ NULL }
|
98 |
}; |
99 |
|
100 |
static int raw_has_zero_init(BlockDriverState *bs) |
101 |
{ |
102 |
return bdrv_has_zero_init(bs->file);
|
103 |
} |
104 |
|
105 |
static BlockDriver bdrv_raw = {
|
106 |
.format_name = "raw",
|
107 |
|
108 |
/* It's really 0, but we need to make g_malloc() happy */
|
109 |
.instance_size = 1,
|
110 |
|
111 |
.bdrv_open = raw_open, |
112 |
.bdrv_close = raw_close, |
113 |
|
114 |
.bdrv_co_readv = raw_co_readv, |
115 |
.bdrv_co_writev = raw_co_writev, |
116 |
.bdrv_co_flush = raw_co_flush, |
117 |
.bdrv_co_discard = raw_co_discard, |
118 |
|
119 |
.bdrv_probe = raw_probe, |
120 |
.bdrv_getlength = raw_getlength, |
121 |
.bdrv_truncate = raw_truncate, |
122 |
|
123 |
.bdrv_is_inserted = raw_is_inserted, |
124 |
.bdrv_media_changed = raw_media_changed, |
125 |
.bdrv_eject = raw_eject, |
126 |
.bdrv_lock_medium = raw_lock_medium, |
127 |
|
128 |
.bdrv_ioctl = raw_ioctl, |
129 |
.bdrv_aio_ioctl = raw_aio_ioctl, |
130 |
|
131 |
.bdrv_create = raw_create, |
132 |
.create_options = raw_create_options, |
133 |
.bdrv_has_zero_init = raw_has_zero_init, |
134 |
}; |
135 |
|
136 |
static void bdrv_raw_init(void) |
137 |
{ |
138 |
bdrv_register(&bdrv_raw); |
139 |
} |
140 |
|
141 |
block_init(bdrv_raw_init); |