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Commit | Line | Data |
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faf07963 PB |
1 | #ifndef BLOCK_H |
2 | #define BLOCK_H | |
3 | ||
737e150e | 4 | #include "block/aio.h" |
3b69e4b9 | 5 | #include "qemu-common.h" |
1de7afc9 | 6 | #include "qemu/option.h" |
737e150e | 7 | #include "block/coroutine.h" |
7b1b5d19 | 8 | #include "qapi/qmp/qobject.h" |
2f0c9fe6 | 9 | #include "qapi-types.h" |
a76bab49 | 10 | |
faf07963 | 11 | /* block.c */ |
faf07963 | 12 | typedef struct BlockDriver BlockDriver; |
2f0c9fe6 | 13 | typedef struct BlockJob BlockJob; |
faf07963 | 14 | |
faf07963 PB |
15 | typedef struct BlockDriverInfo { |
16 | /* in bytes, 0 if irrelevant */ | |
17 | int cluster_size; | |
18 | /* offset at which the VM state can be saved (0 if not possible) */ | |
19 | int64_t vm_state_offset; | |
64c79160 | 20 | bool is_dirty; |
faf07963 PB |
21 | } BlockDriverInfo; |
22 | ||
f8111c24 DXW |
23 | typedef struct BlockFragInfo { |
24 | uint64_t allocated_clusters; | |
25 | uint64_t total_clusters; | |
26 | uint64_t fragmented_clusters; | |
e6439d78 | 27 | uint64_t compressed_clusters; |
f8111c24 DXW |
28 | } BlockFragInfo; |
29 | ||
145feb17 | 30 | /* Callbacks for block device models */ |
0e49de52 | 31 | typedef struct BlockDevOps { |
145feb17 MA |
32 | /* |
33 | * Runs when virtual media changed (monitor commands eject, change) | |
7d4b4ba5 | 34 | * Argument load is true on load and false on eject. |
145feb17 MA |
35 | * Beware: doesn't run when a host device's physical media |
36 | * changes. Sure would be useful if it did. | |
2c6942fa | 37 | * Device models with removable media must implement this callback. |
145feb17 | 38 | */ |
7d4b4ba5 | 39 | void (*change_media_cb)(void *opaque, bool load); |
025ccaa7 PB |
40 | /* |
41 | * Runs when an eject request is issued from the monitor, the tray | |
42 | * is closed, and the medium is locked. | |
43 | * Device models that do not implement is_medium_locked will not need | |
44 | * this callback. Device models that can lock the medium or tray might | |
45 | * want to implement the callback and unlock the tray when "force" is | |
46 | * true, even if they do not support eject requests. | |
47 | */ | |
48 | void (*eject_request_cb)(void *opaque, bool force); | |
e4def80b MA |
49 | /* |
50 | * Is the virtual tray open? | |
51 | * Device models implement this only when the device has a tray. | |
52 | */ | |
53 | bool (*is_tray_open)(void *opaque); | |
f107639a MA |
54 | /* |
55 | * Is the virtual medium locked into the device? | |
56 | * Device models implement this only when device has such a lock. | |
57 | */ | |
58 | bool (*is_medium_locked)(void *opaque); | |
145feb17 MA |
59 | /* |
60 | * Runs when the size changed (e.g. monitor command block_resize) | |
61 | */ | |
62 | void (*resize_cb)(void *opaque); | |
0e49de52 MA |
63 | } BlockDevOps; |
64 | ||
6faac15f PL |
65 | typedef enum { |
66 | BDRV_REQ_COPY_ON_READ = 0x1, | |
67 | BDRV_REQ_ZERO_WRITE = 0x2, | |
68 | } BdrvRequestFlags; | |
69 | ||
faf07963 | 70 | #define BDRV_O_RDWR 0x0002 |
faf07963 | 71 | #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ |
9f7965c7 AL |
72 | #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ |
73 | #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ | |
5c6c3a6c | 74 | #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */ |
b783e409 | 75 | #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */ |
016f5cf6 | 76 | #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */ |
53fec9d3 | 77 | #define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */ |
ccb1f4a7 | 78 | #define BDRV_O_INCOMING 0x0800 /* consistency hint for incoming migration */ |
058f8f16 | 79 | #define BDRV_O_CHECK 0x1000 /* open solely for consistency check */ |
be028adc | 80 | #define BDRV_O_ALLOW_RDWR 0x2000 /* allow reopen to change from r/o to r/w */ |
9e8f1835 | 81 | #define BDRV_O_UNMAP 0x4000 /* execute guest UNMAP/TRIM operations */ |
9f7965c7 | 82 | |
ceb25e5c | 83 | #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) |
faf07963 | 84 | |
6ea44308 | 85 | #define BDRV_SECTOR_BITS 9 |
c63782cb | 86 | #define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS) |
3abbc4d9 | 87 | #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1) |
6ea44308 | 88 | |
4333bb71 PB |
89 | /* BDRV_BLOCK_DATA: data is read from bs->file or another file |
90 | * BDRV_BLOCK_ZERO: sectors read as zero | |
91 | * BDRV_BLOCK_OFFSET_VALID: sector stored in bs->file as raw data | |
92bc50a5 PL |
92 | * BDRV_BLOCK_RAW: used internally to indicate that the request |
93 | * was answered by the raw driver and that one | |
94 | * should look in bs->file directly. | |
4333bb71 PB |
95 | * |
96 | * If BDRV_BLOCK_OFFSET_VALID is set, bits 9-62 represent the offset in | |
97 | * bs->file where sector data can be read from as raw data. | |
98 | * | |
99 | * DATA == 0 && ZERO == 0 means that data is read from backing_hd if present. | |
100 | * | |
101 | * DATA ZERO OFFSET_VALID | |
102 | * t t t sectors read as zero, bs->file is zero at offset | |
103 | * t f t sectors read as valid from bs->file at offset | |
104 | * f t t sectors preallocated, read as zero, bs->file not | |
105 | * necessarily zero at offset | |
106 | * f f t sectors preallocated but read from backing_hd, | |
107 | * bs->file contains garbage at offset | |
108 | * t t f sectors preallocated, read as zero, unknown offset | |
109 | * t f f sectors read from unknown file or offset | |
110 | * f t f not allocated or unknown offset, read as zero | |
111 | * f f f not allocated or unknown offset, read from backing_hd | |
112 | */ | |
113 | #define BDRV_BLOCK_DATA 1 | |
114 | #define BDRV_BLOCK_ZERO 2 | |
115 | #define BDRV_BLOCK_OFFSET_VALID 4 | |
92bc50a5 | 116 | #define BDRV_BLOCK_RAW 8 |
4333bb71 PB |
117 | #define BDRV_BLOCK_OFFSET_MASK BDRV_SECTOR_MASK |
118 | ||
2582bfed LC |
119 | typedef enum { |
120 | BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP | |
ff06f5f3 | 121 | } BlockErrorAction; |
2582bfed | 122 | |
e971aa12 JC |
123 | typedef QSIMPLEQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue; |
124 | ||
125 | typedef struct BDRVReopenState { | |
126 | BlockDriverState *bs; | |
127 | int flags; | |
128 | void *opaque; | |
129 | } BDRVReopenState; | |
130 | ||
131 | ||
28a7282a LC |
132 | void bdrv_iostatus_enable(BlockDriverState *bs); |
133 | void bdrv_iostatus_reset(BlockDriverState *bs); | |
134 | void bdrv_iostatus_disable(BlockDriverState *bs); | |
135 | bool bdrv_iostatus_is_enabled(const BlockDriverState *bs); | |
136 | void bdrv_iostatus_set_err(BlockDriverState *bs, int error); | |
d15e5465 LC |
137 | void bdrv_info_print(Monitor *mon, const QObject *data); |
138 | void bdrv_info(Monitor *mon, QObject **ret_data); | |
218a536a LC |
139 | void bdrv_stats_print(Monitor *mon, const QObject *data); |
140 | void bdrv_info_stats(Monitor *mon, QObject **ret_data); | |
faf07963 | 141 | |
0563e191 ZYW |
142 | /* disk I/O throttling */ |
143 | void bdrv_io_limits_enable(BlockDriverState *bs); | |
98f90dba | 144 | void bdrv_io_limits_disable(BlockDriverState *bs); |
0563e191 | 145 | |
faf07963 | 146 | void bdrv_init(void); |
eb852011 | 147 | void bdrv_init_with_whitelist(void); |
98289620 KW |
148 | BlockDriver *bdrv_find_protocol(const char *filename, |
149 | bool allow_protocol_prefix); | |
faf07963 | 150 | BlockDriver *bdrv_find_format(const char *format_name); |
b64ec4e4 FZ |
151 | BlockDriver *bdrv_find_whitelisted_format(const char *format_name, |
152 | bool readonly); | |
0e7e1989 | 153 | int bdrv_create(BlockDriver *drv, const char* filename, |
cc84d90f HR |
154 | QEMUOptionParameter *options, Error **errp); |
155 | int bdrv_create_file(const char* filename, QEMUOptionParameter *options, | |
156 | Error **errp); | |
faf07963 | 157 | BlockDriverState *bdrv_new(const char *device_name); |
d22b2f41 | 158 | void bdrv_make_anon(BlockDriverState *bs); |
4ddc07ca | 159 | void bdrv_swap(BlockDriverState *bs_new, BlockDriverState *bs_old); |
8802d1fd | 160 | void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top); |
c3993cdc | 161 | int bdrv_parse_cache_flags(const char *mode, int *flags); |
9e8f1835 | 162 | int bdrv_parse_discard_flags(const char *mode, int *flags); |
787e4a85 | 163 | int bdrv_file_open(BlockDriverState **pbs, const char *filename, |
34b5d2c6 HR |
164 | QDict *options, int flags, Error **errp); |
165 | int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp); | |
de9c0cec | 166 | int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, |
34b5d2c6 | 167 | int flags, BlockDriver *drv, Error **errp); |
e971aa12 JC |
168 | BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue, |
169 | BlockDriverState *bs, int flags); | |
170 | int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp); | |
171 | int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp); | |
172 | int bdrv_reopen_prepare(BDRVReopenState *reopen_state, | |
173 | BlockReopenQueue *queue, Error **errp); | |
174 | void bdrv_reopen_commit(BDRVReopenState *reopen_state); | |
175 | void bdrv_reopen_abort(BDRVReopenState *reopen_state); | |
faf07963 | 176 | void bdrv_close(BlockDriverState *bs); |
d7d512f6 | 177 | void bdrv_add_close_notifier(BlockDriverState *bs, Notifier *notify); |
fa879d62 MA |
178 | int bdrv_attach_dev(BlockDriverState *bs, void *dev); |
179 | void bdrv_attach_dev_nofail(BlockDriverState *bs, void *dev); | |
180 | void bdrv_detach_dev(BlockDriverState *bs, void *dev); | |
181 | void *bdrv_get_attached_dev(BlockDriverState *bs); | |
0e49de52 MA |
182 | void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops, |
183 | void *opaque); | |
025ccaa7 | 184 | void bdrv_dev_eject_request(BlockDriverState *bs, bool force); |
2c6942fa | 185 | bool bdrv_dev_has_removable_media(BlockDriverState *bs); |
e4def80b | 186 | bool bdrv_dev_is_tray_open(BlockDriverState *bs); |
f107639a | 187 | bool bdrv_dev_is_medium_locked(BlockDriverState *bs); |
faf07963 PB |
188 | int bdrv_read(BlockDriverState *bs, int64_t sector_num, |
189 | uint8_t *buf, int nb_sectors); | |
07d27a44 MA |
190 | int bdrv_read_unthrottled(BlockDriverState *bs, int64_t sector_num, |
191 | uint8_t *buf, int nb_sectors); | |
faf07963 PB |
192 | int bdrv_write(BlockDriverState *bs, int64_t sector_num, |
193 | const uint8_t *buf, int nb_sectors); | |
4105eaaa | 194 | int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, |
aa7bfbff | 195 | int nb_sectors, BdrvRequestFlags flags); |
8d3b1a2d | 196 | int bdrv_writev(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov); |
faf07963 PB |
197 | int bdrv_pread(BlockDriverState *bs, int64_t offset, |
198 | void *buf, int count); | |
199 | int bdrv_pwrite(BlockDriverState *bs, int64_t offset, | |
200 | const void *buf, int count); | |
8d3b1a2d | 201 | int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov); |
f08145fe KW |
202 | int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset, |
203 | const void *buf, int count); | |
da1fa91d KW |
204 | int coroutine_fn bdrv_co_readv(BlockDriverState *bs, int64_t sector_num, |
205 | int nb_sectors, QEMUIOVector *qiov); | |
470c0504 SH |
206 | int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs, |
207 | int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); | |
da1fa91d KW |
208 | int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num, |
209 | int nb_sectors, QEMUIOVector *qiov); | |
f08f2dda SH |
210 | /* |
211 | * Efficiently zero a region of the disk image. Note that this is a regular | |
212 | * I/O request like read or write and should have a reasonable size. This | |
213 | * function is not suitable for zeroing the entire image in a single request | |
214 | * because it may allocate memory for the entire region. | |
215 | */ | |
216 | int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, | |
aa7bfbff | 217 | int nb_sectors, BdrvRequestFlags flags); |
e8a6bb9c MT |
218 | BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs, |
219 | const char *backing_file); | |
f198fd1c | 220 | int bdrv_get_backing_file_depth(BlockDriverState *bs); |
faf07963 PB |
221 | int bdrv_truncate(BlockDriverState *bs, int64_t offset); |
222 | int64_t bdrv_getlength(BlockDriverState *bs); | |
4a1d5e1f | 223 | int64_t bdrv_get_allocated_file_size(BlockDriverState *bs); |
96b8f136 | 224 | void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr); |
faf07963 | 225 | int bdrv_commit(BlockDriverState *bs); |
e8877497 | 226 | int bdrv_commit_all(void); |
756e6736 KW |
227 | int bdrv_change_backing_file(BlockDriverState *bs, |
228 | const char *backing_file, const char *backing_fmt); | |
5efa9d5a | 229 | void bdrv_register(BlockDriver *bdrv); |
6ebdcee2 JC |
230 | int bdrv_drop_intermediate(BlockDriverState *active, BlockDriverState *top, |
231 | BlockDriverState *base); | |
232 | BlockDriverState *bdrv_find_overlay(BlockDriverState *active, | |
233 | BlockDriverState *bs); | |
79fac568 | 234 | BlockDriverState *bdrv_find_base(BlockDriverState *bs); |
5efa9d5a | 235 | |
e076f338 KW |
236 | |
237 | typedef struct BdrvCheckResult { | |
238 | int corruptions; | |
239 | int leaks; | |
240 | int check_errors; | |
ccf34716 KW |
241 | int corruptions_fixed; |
242 | int leaks_fixed; | |
c6bb9ad1 | 243 | int64_t image_end_offset; |
f8111c24 | 244 | BlockFragInfo bfi; |
e076f338 KW |
245 | } BdrvCheckResult; |
246 | ||
4534ff54 KW |
247 | typedef enum { |
248 | BDRV_FIX_LEAKS = 1, | |
249 | BDRV_FIX_ERRORS = 2, | |
250 | } BdrvCheckMode; | |
251 | ||
252 | int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix); | |
e076f338 | 253 | |
6f176b48 HR |
254 | int bdrv_amend_options(BlockDriverState *bs_new, QEMUOptionParameter *options); |
255 | ||
f6186f49 BC |
256 | /* external snapshots */ |
257 | ||
258 | typedef enum { | |
259 | EXT_SNAPSHOT_ALLOWED, | |
260 | EXT_SNAPSHOT_FORBIDDEN, | |
261 | } ExtSnapshotPerm; | |
262 | ||
263 | /* return EXT_SNAPSHOT_ALLOWED if external snapshot is allowed | |
264 | * return EXT_SNAPSHOT_FORBIDDEN if external snapshot is forbidden | |
265 | */ | |
266 | ExtSnapshotPerm bdrv_check_ext_snapshot(BlockDriverState *bs); | |
267 | /* helper used to forbid external snapshots like in blkverify */ | |
268 | ExtSnapshotPerm bdrv_check_ext_snapshot_forbidden(BlockDriverState *bs); | |
269 | ||
faf07963 | 270 | /* async block I/O */ |
7cd1e32a | 271 | typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, |
39aa9a12 | 272 | int sector_num); |
3b69e4b9 AL |
273 | BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, |
274 | QEMUIOVector *iov, int nb_sectors, | |
275 | BlockDriverCompletionFunc *cb, void *opaque); | |
276 | BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, | |
277 | QEMUIOVector *iov, int nb_sectors, | |
278 | BlockDriverCompletionFunc *cb, void *opaque); | |
b2e12bc6 | 279 | BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, |
39aa9a12 | 280 | BlockDriverCompletionFunc *cb, void *opaque); |
4265d620 PB |
281 | BlockDriverAIOCB *bdrv_aio_discard(BlockDriverState *bs, |
282 | int64_t sector_num, int nb_sectors, | |
283 | BlockDriverCompletionFunc *cb, void *opaque); | |
faf07963 PB |
284 | void bdrv_aio_cancel(BlockDriverAIOCB *acb); |
285 | ||
40b4f539 KW |
286 | typedef struct BlockRequest { |
287 | /* Fields to be filled by multiwrite caller */ | |
288 | int64_t sector; | |
289 | int nb_sectors; | |
290 | QEMUIOVector *qiov; | |
291 | BlockDriverCompletionFunc *cb; | |
292 | void *opaque; | |
293 | ||
294 | /* Filled by multiwrite implementation */ | |
295 | int error; | |
296 | } BlockRequest; | |
297 | ||
298 | int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs, | |
299 | int num_reqs); | |
300 | ||
7d780669 | 301 | /* sg packet commands */ |
221f715d AL |
302 | int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); |
303 | BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, | |
304 | unsigned long int req, void *buf, | |
305 | BlockDriverCompletionFunc *cb, void *opaque); | |
7d780669 | 306 | |
0f15423c AL |
307 | /* Invalidate any cached metadata used by image formats */ |
308 | void bdrv_invalidate_cache(BlockDriverState *bs); | |
309 | void bdrv_invalidate_cache_all(void); | |
310 | ||
07789269 BC |
311 | void bdrv_clear_incoming_migration_all(void); |
312 | ||
faf07963 | 313 | /* Ensure contents are flushed to disk. */ |
205ef796 | 314 | int bdrv_flush(BlockDriverState *bs); |
07f07615 | 315 | int coroutine_fn bdrv_co_flush(BlockDriverState *bs); |
f0f0fdfe | 316 | int bdrv_flush_all(void); |
2bc93fed | 317 | void bdrv_close_all(void); |
922453bc | 318 | void bdrv_drain_all(void); |
c6ca28d6 | 319 | |
bb8bf76f | 320 | int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); |
4265d620 | 321 | int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); |
3ac21627 | 322 | int bdrv_has_zero_init_1(BlockDriverState *bs); |
f2feebbd | 323 | int bdrv_has_zero_init(BlockDriverState *bs); |
b6b8a333 PB |
324 | int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num, |
325 | int nb_sectors, int *pnum); | |
f58c7b35 | 326 | int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, |
39aa9a12 | 327 | int *pnum); |
b35b2bba MR |
328 | int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base, |
329 | int64_t sector_num, int nb_sectors, int *pnum); | |
faf07963 | 330 | |
ff06f5f3 PB |
331 | void bdrv_set_on_error(BlockDriverState *bs, BlockdevOnError on_read_error, |
332 | BlockdevOnError on_write_error); | |
1ceee0d5 | 333 | BlockdevOnError bdrv_get_on_error(BlockDriverState *bs, bool is_read); |
3e1caa5f PB |
334 | BlockErrorAction bdrv_get_error_action(BlockDriverState *bs, bool is_read, int error); |
335 | void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action, | |
336 | bool is_read, int error); | |
faf07963 | 337 | int bdrv_is_read_only(BlockDriverState *bs); |
985a03b0 | 338 | int bdrv_is_sg(BlockDriverState *bs); |
e900a7b7 | 339 | int bdrv_enable_write_cache(BlockDriverState *bs); |
425b0148 | 340 | void bdrv_set_enable_write_cache(BlockDriverState *bs, bool wce); |
faf07963 PB |
341 | int bdrv_is_inserted(BlockDriverState *bs); |
342 | int bdrv_media_changed(BlockDriverState *bs); | |
025e849a | 343 | void bdrv_lock_medium(BlockDriverState *bs, bool locked); |
f36f3949 | 344 | void bdrv_eject(BlockDriverState *bs, bool eject_flag); |
f8d6bba1 | 345 | const char *bdrv_get_format_name(BlockDriverState *bs); |
faf07963 | 346 | BlockDriverState *bdrv_find(const char *name); |
2f399b0a | 347 | BlockDriverState *bdrv_next(BlockDriverState *bs); |
51de9760 AL |
348 | void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), |
349 | void *opaque); | |
faf07963 | 350 | int bdrv_is_encrypted(BlockDriverState *bs); |
c0f4ce77 | 351 | int bdrv_key_required(BlockDriverState *bs); |
faf07963 | 352 | int bdrv_set_key(BlockDriverState *bs, const char *key); |
c0f4ce77 | 353 | int bdrv_query_missing_keys(void); |
faf07963 PB |
354 | void bdrv_iterate_format(void (*it)(void *opaque, const char *name), |
355 | void *opaque); | |
356 | const char *bdrv_get_device_name(BlockDriverState *bs); | |
c8433287 | 357 | int bdrv_get_flags(BlockDriverState *bs); |
faf07963 PB |
358 | int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, |
359 | const uint8_t *buf, int nb_sectors); | |
360 | int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); | |
eae041fe | 361 | ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs); |
343bded4 PB |
362 | void bdrv_round_to_clusters(BlockDriverState *bs, |
363 | int64_t sector_num, int nb_sectors, | |
364 | int64_t *cluster_sector_num, | |
365 | int *cluster_nb_sectors); | |
faf07963 | 366 | |
045df330 | 367 | const char *bdrv_get_encrypted_filename(BlockDriverState *bs); |
faf07963 PB |
368 | void bdrv_get_backing_filename(BlockDriverState *bs, |
369 | char *filename, int filename_size); | |
dc5a1371 PB |
370 | void bdrv_get_full_backing_filename(BlockDriverState *bs, |
371 | char *dest, size_t sz); | |
199630b6 | 372 | int bdrv_is_snapshot(BlockDriverState *bs); |
faf07963 | 373 | |
faf07963 PB |
374 | int path_is_absolute(const char *path); |
375 | void path_combine(char *dest, int dest_size, | |
376 | const char *base_path, | |
377 | const char *filename); | |
378 | ||
cf8074b3 | 379 | int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos); |
45566e9c CH |
380 | int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, |
381 | int64_t pos, int size); | |
178e08a5 | 382 | |
45566e9c CH |
383 | int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, |
384 | int64_t pos, int size); | |
178e08a5 | 385 | |
d92ada22 LC |
386 | void bdrv_img_create(const char *filename, const char *fmt, |
387 | const char *base_filename, const char *base_fmt, | |
f382d43a MR |
388 | char *options, uint64_t img_size, int flags, |
389 | Error **errp, bool quiet); | |
f88e1a42 | 390 | |
7b6f9300 | 391 | void bdrv_set_buffer_alignment(BlockDriverState *bs, int align); |
ba5b7ad4 | 392 | void *qemu_blockalign(BlockDriverState *bs, size_t size); |
c53b1c51 | 393 | bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov); |
ba5b7ad4 | 394 | |
8f0720ec | 395 | struct HBitmapIter; |
50717e94 | 396 | void bdrv_set_dirty_tracking(BlockDriverState *bs, int granularity); |
7cd1e32a | 397 | int bdrv_get_dirty(BlockDriverState *bs, int64_t sector); |
1755da16 PB |
398 | void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); |
399 | void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); | |
8f0720ec | 400 | void bdrv_dirty_iter_init(BlockDriverState *bs, struct HBitmapIter *hbi); |
aaa0eb75 | 401 | int64_t bdrv_get_dirty_count(BlockDriverState *bs); |
8b9b0cc2 | 402 | |
53fec9d3 SH |
403 | void bdrv_enable_copy_on_read(BlockDriverState *bs); |
404 | void bdrv_disable_copy_on_read(BlockDriverState *bs); | |
405 | ||
9fcb0251 FZ |
406 | void bdrv_ref(BlockDriverState *bs); |
407 | void bdrv_unref(BlockDriverState *bs); | |
db593f25 MT |
408 | void bdrv_set_in_use(BlockDriverState *bs, int in_use); |
409 | int bdrv_in_use(BlockDriverState *bs); | |
8b9b0cc2 | 410 | |
4065742a SH |
411 | #ifdef CONFIG_LINUX_AIO |
412 | int raw_get_aio_fd(BlockDriverState *bs); | |
413 | #else | |
414 | static inline int raw_get_aio_fd(BlockDriverState *bs) | |
415 | { | |
416 | return -ENOTSUP; | |
417 | } | |
418 | #endif | |
419 | ||
a597e79c CH |
420 | enum BlockAcctType { |
421 | BDRV_ACCT_READ, | |
422 | BDRV_ACCT_WRITE, | |
423 | BDRV_ACCT_FLUSH, | |
424 | BDRV_MAX_IOTYPE, | |
425 | }; | |
426 | ||
427 | typedef struct BlockAcctCookie { | |
428 | int64_t bytes; | |
c488c7f6 | 429 | int64_t start_time_ns; |
a597e79c CH |
430 | enum BlockAcctType type; |
431 | } BlockAcctCookie; | |
432 | ||
433 | void bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie, | |
434 | int64_t bytes, enum BlockAcctType type); | |
435 | void bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie); | |
436 | ||
8b9b0cc2 | 437 | typedef enum { |
8252278a KW |
438 | BLKDBG_L1_UPDATE, |
439 | ||
440 | BLKDBG_L1_GROW_ALLOC_TABLE, | |
441 | BLKDBG_L1_GROW_WRITE_TABLE, | |
442 | BLKDBG_L1_GROW_ACTIVATE_TABLE, | |
443 | ||
444 | BLKDBG_L2_LOAD, | |
445 | BLKDBG_L2_UPDATE, | |
446 | BLKDBG_L2_UPDATE_COMPRESSED, | |
447 | BLKDBG_L2_ALLOC_COW_READ, | |
448 | BLKDBG_L2_ALLOC_WRITE, | |
449 | ||
8252278a | 450 | BLKDBG_READ_AIO, |
8252278a KW |
451 | BLKDBG_READ_BACKING_AIO, |
452 | BLKDBG_READ_COMPRESSED, | |
453 | ||
454 | BLKDBG_WRITE_AIO, | |
455 | BLKDBG_WRITE_COMPRESSED, | |
456 | ||
457 | BLKDBG_VMSTATE_LOAD, | |
458 | BLKDBG_VMSTATE_SAVE, | |
459 | ||
460 | BLKDBG_COW_READ, | |
461 | BLKDBG_COW_WRITE, | |
462 | ||
463 | BLKDBG_REFTABLE_LOAD, | |
464 | BLKDBG_REFTABLE_GROW, | |
afa50193 | 465 | BLKDBG_REFTABLE_UPDATE, |
8252278a KW |
466 | |
467 | BLKDBG_REFBLOCK_LOAD, | |
468 | BLKDBG_REFBLOCK_UPDATE, | |
469 | BLKDBG_REFBLOCK_UPDATE_PART, | |
470 | BLKDBG_REFBLOCK_ALLOC, | |
471 | BLKDBG_REFBLOCK_ALLOC_HOOKUP, | |
472 | BLKDBG_REFBLOCK_ALLOC_WRITE, | |
473 | BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS, | |
474 | BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE, | |
475 | BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE, | |
476 | ||
477 | BLKDBG_CLUSTER_ALLOC, | |
478 | BLKDBG_CLUSTER_ALLOC_BYTES, | |
479 | BLKDBG_CLUSTER_FREE, | |
480 | ||
bf736fe3 KW |
481 | BLKDBG_FLUSH_TO_OS, |
482 | BLKDBG_FLUSH_TO_DISK, | |
483 | ||
8b9b0cc2 KW |
484 | BLKDBG_EVENT_MAX, |
485 | } BlkDebugEvent; | |
486 | ||
487 | #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt) | |
488 | void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event); | |
489 | ||
41c695c7 KW |
490 | int bdrv_debug_breakpoint(BlockDriverState *bs, const char *event, |
491 | const char *tag); | |
492 | int bdrv_debug_resume(BlockDriverState *bs, const char *tag); | |
493 | bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag); | |
494 | ||
8a4bc5aa | 495 | #endif |