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faf07963 PB |
1 | #ifndef BLOCK_H |
2 | #define BLOCK_H | |
3 | ||
a76bab49 | 4 | #include "qemu-aio.h" |
3b69e4b9 | 5 | #include "qemu-common.h" |
0e7e1989 | 6 | #include "qemu-option.h" |
a76bab49 | 7 | |
faf07963 | 8 | /* block.c */ |
faf07963 PB |
9 | typedef struct BlockDriver BlockDriver; |
10 | ||
faf07963 PB |
11 | typedef struct BlockDriverInfo { |
12 | /* in bytes, 0 if irrelevant */ | |
13 | int cluster_size; | |
14 | /* offset at which the VM state can be saved (0 if not possible) */ | |
15 | int64_t vm_state_offset; | |
16 | } BlockDriverInfo; | |
17 | ||
18 | typedef struct QEMUSnapshotInfo { | |
19 | char id_str[128]; /* unique snapshot id */ | |
20 | /* the following fields are informative. They are not needed for | |
21 | the consistency of the snapshot */ | |
22 | char name[256]; /* user choosen name */ | |
23 | uint32_t vm_state_size; /* VM state info size */ | |
24 | uint32_t date_sec; /* UTC date of the snapshot */ | |
25 | uint32_t date_nsec; | |
26 | uint64_t vm_clock_nsec; /* VM clock relative to boot */ | |
27 | } QEMUSnapshotInfo; | |
28 | ||
29 | #define BDRV_O_RDONLY 0x0000 | |
30 | #define BDRV_O_RDWR 0x0002 | |
31 | #define BDRV_O_ACCESS 0x0003 | |
32 | #define BDRV_O_CREAT 0x0004 /* create an empty file */ | |
33 | #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ | |
34 | #define BDRV_O_FILE 0x0010 /* open as a raw file (do not try to | |
35 | use a disk image format on top of | |
36 | it (default for | |
37 | bdrv_file_open()) */ | |
9f7965c7 AL |
38 | #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ |
39 | #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ | |
5c6c3a6c | 40 | #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */ |
9f7965c7 | 41 | |
0aa217e4 | 42 | #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB) |
faf07963 | 43 | |
376253ec AL |
44 | void bdrv_info(Monitor *mon); |
45 | void bdrv_info_stats(Monitor *mon); | |
faf07963 PB |
46 | |
47 | void bdrv_init(void); | |
eb852011 | 48 | void bdrv_init_with_whitelist(void); |
faf07963 | 49 | BlockDriver *bdrv_find_format(const char *format_name); |
eb852011 | 50 | BlockDriver *bdrv_find_whitelisted_format(const char *format_name); |
0e7e1989 KW |
51 | int bdrv_create(BlockDriver *drv, const char* filename, |
52 | QEMUOptionParameter *options); | |
5eb45639 AL |
53 | int bdrv_create2(BlockDriver *drv, |
54 | const char *filename, int64_t size_in_sectors, | |
55 | const char *backing_file, const char *backing_format, | |
56 | int flags); | |
faf07963 PB |
57 | BlockDriverState *bdrv_new(const char *device_name); |
58 | void bdrv_delete(BlockDriverState *bs); | |
59 | int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); | |
60 | int bdrv_open(BlockDriverState *bs, const char *filename, int flags); | |
61 | int bdrv_open2(BlockDriverState *bs, const char *filename, int flags, | |
62 | BlockDriver *drv); | |
63 | void bdrv_close(BlockDriverState *bs); | |
e97fc193 | 64 | int bdrv_check(BlockDriverState *bs); |
faf07963 PB |
65 | int bdrv_read(BlockDriverState *bs, int64_t sector_num, |
66 | uint8_t *buf, int nb_sectors); | |
67 | int bdrv_write(BlockDriverState *bs, int64_t sector_num, | |
68 | const uint8_t *buf, int nb_sectors); | |
69 | int bdrv_pread(BlockDriverState *bs, int64_t offset, | |
70 | void *buf, int count); | |
71 | int bdrv_pwrite(BlockDriverState *bs, int64_t offset, | |
72 | const void *buf, int count); | |
73 | int bdrv_truncate(BlockDriverState *bs, int64_t offset); | |
74 | int64_t bdrv_getlength(BlockDriverState *bs); | |
96b8f136 | 75 | void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr); |
f3d54fc4 | 76 | void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs); |
faf07963 | 77 | int bdrv_commit(BlockDriverState *bs); |
5efa9d5a AL |
78 | void bdrv_register(BlockDriver *bdrv); |
79 | ||
faf07963 PB |
80 | /* async block I/O */ |
81 | typedef struct BlockDriverAIOCB BlockDriverAIOCB; | |
82 | typedef void BlockDriverCompletionFunc(void *opaque, int ret); | |
83 | ||
3b69e4b9 AL |
84 | BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, |
85 | QEMUIOVector *iov, int nb_sectors, | |
86 | BlockDriverCompletionFunc *cb, void *opaque); | |
87 | BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, | |
88 | QEMUIOVector *iov, int nb_sectors, | |
89 | BlockDriverCompletionFunc *cb, void *opaque); | |
b2e12bc6 CH |
90 | BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, |
91 | BlockDriverCompletionFunc *cb, void *opaque); | |
faf07963 PB |
92 | void bdrv_aio_cancel(BlockDriverAIOCB *acb); |
93 | ||
40b4f539 KW |
94 | typedef struct BlockRequest { |
95 | /* Fields to be filled by multiwrite caller */ | |
96 | int64_t sector; | |
97 | int nb_sectors; | |
98 | QEMUIOVector *qiov; | |
99 | BlockDriverCompletionFunc *cb; | |
100 | void *opaque; | |
101 | ||
102 | /* Filled by multiwrite implementation */ | |
103 | int error; | |
104 | } BlockRequest; | |
105 | ||
106 | int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs, | |
107 | int num_reqs); | |
108 | ||
7d780669 | 109 | /* sg packet commands */ |
221f715d AL |
110 | int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); |
111 | BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, | |
112 | unsigned long int req, void *buf, | |
113 | BlockDriverCompletionFunc *cb, void *opaque); | |
7d780669 | 114 | |
faf07963 PB |
115 | /* Ensure contents are flushed to disk. */ |
116 | void bdrv_flush(BlockDriverState *bs); | |
c6ca28d6 AL |
117 | void bdrv_flush_all(void); |
118 | ||
f58c7b35 TS |
119 | int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, |
120 | int *pnum); | |
faf07963 PB |
121 | |
122 | #define BDRV_TYPE_HD 0 | |
123 | #define BDRV_TYPE_CDROM 1 | |
124 | #define BDRV_TYPE_FLOPPY 2 | |
125 | #define BIOS_ATA_TRANSLATION_AUTO 0 | |
126 | #define BIOS_ATA_TRANSLATION_NONE 1 | |
127 | #define BIOS_ATA_TRANSLATION_LBA 2 | |
128 | #define BIOS_ATA_TRANSLATION_LARGE 3 | |
129 | #define BIOS_ATA_TRANSLATION_RECHS 4 | |
130 | ||
131 | void bdrv_set_geometry_hint(BlockDriverState *bs, | |
132 | int cyls, int heads, int secs); | |
133 | void bdrv_set_type_hint(BlockDriverState *bs, int type); | |
134 | void bdrv_set_translation_hint(BlockDriverState *bs, int translation); | |
135 | void bdrv_get_geometry_hint(BlockDriverState *bs, | |
136 | int *pcyls, int *pheads, int *psecs); | |
137 | int bdrv_get_type_hint(BlockDriverState *bs); | |
138 | int bdrv_get_translation_hint(BlockDriverState *bs); | |
139 | int bdrv_is_removable(BlockDriverState *bs); | |
140 | int bdrv_is_read_only(BlockDriverState *bs); | |
59f2689d | 141 | int bdrv_set_read_only(BlockDriverState *bs, int read_only); |
985a03b0 | 142 | int bdrv_is_sg(BlockDriverState *bs); |
e900a7b7 | 143 | int bdrv_enable_write_cache(BlockDriverState *bs); |
faf07963 PB |
144 | int bdrv_is_inserted(BlockDriverState *bs); |
145 | int bdrv_media_changed(BlockDriverState *bs); | |
146 | int bdrv_is_locked(BlockDriverState *bs); | |
147 | void bdrv_set_locked(BlockDriverState *bs, int locked); | |
aea2a33c | 148 | int bdrv_eject(BlockDriverState *bs, int eject_flag); |
faf07963 PB |
149 | void bdrv_set_change_cb(BlockDriverState *bs, |
150 | void (*change_cb)(void *opaque), void *opaque); | |
151 | void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); | |
152 | BlockDriverState *bdrv_find(const char *name); | |
51de9760 AL |
153 | void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), |
154 | void *opaque); | |
faf07963 | 155 | int bdrv_is_encrypted(BlockDriverState *bs); |
c0f4ce77 | 156 | int bdrv_key_required(BlockDriverState *bs); |
faf07963 | 157 | int bdrv_set_key(BlockDriverState *bs, const char *key); |
c0f4ce77 | 158 | int bdrv_query_missing_keys(void); |
faf07963 PB |
159 | void bdrv_iterate_format(void (*it)(void *opaque, const char *name), |
160 | void *opaque); | |
161 | const char *bdrv_get_device_name(BlockDriverState *bs); | |
162 | int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, | |
163 | const uint8_t *buf, int nb_sectors); | |
164 | int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); | |
165 | ||
045df330 | 166 | const char *bdrv_get_encrypted_filename(BlockDriverState *bs); |
faf07963 PB |
167 | void bdrv_get_backing_filename(BlockDriverState *bs, |
168 | char *filename, int filename_size); | |
169 | int bdrv_snapshot_create(BlockDriverState *bs, | |
170 | QEMUSnapshotInfo *sn_info); | |
171 | int bdrv_snapshot_goto(BlockDriverState *bs, | |
172 | const char *snapshot_id); | |
173 | int bdrv_snapshot_delete(BlockDriverState *bs, const char *snapshot_id); | |
174 | int bdrv_snapshot_list(BlockDriverState *bs, | |
175 | QEMUSnapshotInfo **psn_info); | |
176 | char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn); | |
177 | ||
178 | char *get_human_readable_size(char *buf, int buf_size, int64_t size); | |
179 | int path_is_absolute(const char *path); | |
180 | void path_combine(char *dest, int dest_size, | |
181 | const char *base_path, | |
182 | const char *filename); | |
183 | ||
45566e9c CH |
184 | int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, |
185 | int64_t pos, int size); | |
178e08a5 | 186 | |
45566e9c CH |
187 | int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, |
188 | int64_t pos, int size); | |
178e08a5 | 189 | |
faf07963 | 190 | #endif |