1 #ifndef BLOCK_H 2 #define BLOCK_H 3 4 #include "block/aio.h" 5 #include "qemu-common.h" 6 #include "qemu/option.h" 7 #include "block/coroutine.h" 8 #include "qapi/qmp/qobject.h" 9 #include "qapi-types.h" 10 11 /* block.c */ 12 typedef struct BlockDriver BlockDriver; 13 typedef struct BlockJob BlockJob; 14 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; 20 bool is_dirty; 21 /* 22 * True if unallocated blocks read back as zeroes. This is equivalent 23 * to the the LBPRZ flag in the SCSI logical block provisioning page. 24 */ 25 bool unallocated_blocks_are_zero; 26 /* 27 * True if the driver can optimize writing zeroes by unmapping 28 * sectors. This is equivalent to the BLKDISCARDZEROES ioctl in Linux 29 * with the difference that in qemu a discard is allowed to silently 30 * fail. Therefore we have to use bdrv_write_zeroes with the 31 * BDRV_REQ_MAY_UNMAP flag for an optimized zero write with unmapping. 32 * After this call the driver has to guarantee that the contents read 33 * back as zero. It is additionally required that the block device is 34 * opened with BDRV_O_UNMAP flag for this to work. 35 */ 36 bool can_write_zeroes_with_unmap; 37 } BlockDriverInfo; 38 39 typedef struct BlockFragInfo { 40 uint64_t allocated_clusters; 41 uint64_t total_clusters; 42 uint64_t fragmented_clusters; 43 uint64_t compressed_clusters; 44 } BlockFragInfo; 45 46 /* Callbacks for block device models */ 47 typedef struct BlockDevOps { 48 /* 49 * Runs when virtual media changed (monitor commands eject, change) 50 * Argument load is true on load and false on eject. 51 * Beware: doesn't run when a host device's physical media 52 * changes. Sure would be useful if it did. 53 * Device models with removable media must implement this callback. 54 */ 55 void (*change_media_cb)(void *opaque, bool load); 56 /* 57 * Runs when an eject request is issued from the monitor, the tray 58 * is closed, and the medium is locked. 59 * Device models that do not implement is_medium_locked will not need 60 * this callback. Device models that can lock the medium or tray might 61 * want to implement the callback and unlock the tray when "force" is 62 * true, even if they do not support eject requests. 63 */ 64 void (*eject_request_cb)(void *opaque, bool force); 65 /* 66 * Is the virtual tray open? 67 * Device models implement this only when the device has a tray. 68 */ 69 bool (*is_tray_open)(void *opaque); 70 /* 71 * Is the virtual medium locked into the device? 72 * Device models implement this only when device has such a lock. 73 */ 74 bool (*is_medium_locked)(void *opaque); 75 /* 76 * Runs when the size changed (e.g. monitor command block_resize) 77 */ 78 void (*resize_cb)(void *opaque); 79 } BlockDevOps; 80 81 typedef enum { 82 BDRV_REQ_COPY_ON_READ = 0x1, 83 BDRV_REQ_ZERO_WRITE = 0x2, 84 /* The BDRV_REQ_MAY_UNMAP flag is used to indicate that the block driver 85 * is allowed to optimize a write zeroes request by unmapping (discarding) 86 * blocks if it is guaranteed that the result will read back as 87 * zeroes. The flag is only passed to the driver if the block device is 88 * opened with BDRV_O_UNMAP. 89 */ 90 BDRV_REQ_MAY_UNMAP = 0x4, 91 } BdrvRequestFlags; 92 93 #define BDRV_O_RDWR 0x0002 94 #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ 95 #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ 96 #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ 97 #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */ 98 #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */ 99 #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */ 100 #define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */ 101 #define BDRV_O_INCOMING 0x0800 /* consistency hint for incoming migration */ 102 #define BDRV_O_CHECK 0x1000 /* open solely for consistency check */ 103 #define BDRV_O_ALLOW_RDWR 0x2000 /* allow reopen to change from r/o to r/w */ 104 #define BDRV_O_UNMAP 0x4000 /* execute guest UNMAP/TRIM operations */ 105 106 #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) 107 108 #define BDRV_SECTOR_BITS 9 109 #define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS) 110 #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1) 111 112 /* BDRV_BLOCK_DATA: data is read from bs->file or another file 113 * BDRV_BLOCK_ZERO: sectors read as zero 114 * BDRV_BLOCK_OFFSET_VALID: sector stored in bs->file as raw data 115 * BDRV_BLOCK_RAW: used internally to indicate that the request 116 * was answered by the raw driver and that one 117 * should look in bs->file directly. 118 * 119 * If BDRV_BLOCK_OFFSET_VALID is set, bits 9-62 represent the offset in 120 * bs->file where sector data can be read from as raw data. 121 * 122 * DATA == 0 && ZERO == 0 means that data is read from backing_hd if present. 123 * 124 * DATA ZERO OFFSET_VALID 125 * t t t sectors read as zero, bs->file is zero at offset 126 * t f t sectors read as valid from bs->file at offset 127 * f t t sectors preallocated, read as zero, bs->file not 128 * necessarily zero at offset 129 * f f t sectors preallocated but read from backing_hd, 130 * bs->file contains garbage at offset 131 * t t f sectors preallocated, read as zero, unknown offset 132 * t f f sectors read from unknown file or offset 133 * f t f not allocated or unknown offset, read as zero 134 * f f f not allocated or unknown offset, read from backing_hd 135 */ 136 #define BDRV_BLOCK_DATA 1 137 #define BDRV_BLOCK_ZERO 2 138 #define BDRV_BLOCK_OFFSET_VALID 4 139 #define BDRV_BLOCK_RAW 8 140 #define BDRV_BLOCK_OFFSET_MASK BDRV_SECTOR_MASK 141 142 typedef enum { 143 BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP 144 } BlockErrorAction; 145 146 typedef QSIMPLEQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue; 147 148 typedef struct BDRVReopenState { 149 BlockDriverState *bs; 150 int flags; 151 void *opaque; 152 } BDRVReopenState; 153 154 155 void bdrv_iostatus_enable(BlockDriverState *bs); 156 void bdrv_iostatus_reset(BlockDriverState *bs); 157 void bdrv_iostatus_disable(BlockDriverState *bs); 158 bool bdrv_iostatus_is_enabled(const BlockDriverState *bs); 159 void bdrv_iostatus_set_err(BlockDriverState *bs, int error); 160 void bdrv_info_print(Monitor *mon, const QObject *data); 161 void bdrv_info(Monitor *mon, QObject **ret_data); 162 void bdrv_stats_print(Monitor *mon, const QObject *data); 163 void bdrv_info_stats(Monitor *mon, QObject **ret_data); 164 165 /* disk I/O throttling */ 166 void bdrv_io_limits_enable(BlockDriverState *bs); 167 void bdrv_io_limits_disable(BlockDriverState *bs); 168 169 void bdrv_init(void); 170 void bdrv_init_with_whitelist(void); 171 BlockDriver *bdrv_find_protocol(const char *filename, 172 bool allow_protocol_prefix); 173 BlockDriver *bdrv_find_format(const char *format_name); 174 BlockDriver *bdrv_find_whitelisted_format(const char *format_name, 175 bool readonly); 176 int bdrv_create(BlockDriver *drv, const char* filename, 177 QEMUOptionParameter *options, Error **errp); 178 int bdrv_create_file(const char* filename, QEMUOptionParameter *options, 179 Error **errp); 180 BlockDriverState *bdrv_new(const char *device_name); 181 void bdrv_make_anon(BlockDriverState *bs); 182 void bdrv_swap(BlockDriverState *bs_new, BlockDriverState *bs_old); 183 void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top); 184 int bdrv_parse_cache_flags(const char *mode, int *flags); 185 int bdrv_parse_discard_flags(const char *mode, int *flags); 186 int bdrv_file_open(BlockDriverState **pbs, const char *filename, 187 const char *reference, QDict *options, int flags, 188 Error **errp); 189 int bdrv_open_image(BlockDriverState **pbs, const char *filename, 190 QDict *options, const char *bdref_key, int flags, 191 bool force_raw, bool allow_none, Error **errp); 192 int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp); 193 int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, 194 int flags, BlockDriver *drv, Error **errp); 195 BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue, 196 BlockDriverState *bs, int flags); 197 int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp); 198 int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp); 199 int bdrv_reopen_prepare(BDRVReopenState *reopen_state, 200 BlockReopenQueue *queue, Error **errp); 201 void bdrv_reopen_commit(BDRVReopenState *reopen_state); 202 void bdrv_reopen_abort(BDRVReopenState *reopen_state); 203 void bdrv_close(BlockDriverState *bs); 204 void bdrv_add_close_notifier(BlockDriverState *bs, Notifier *notify); 205 int bdrv_attach_dev(BlockDriverState *bs, void *dev); 206 void bdrv_attach_dev_nofail(BlockDriverState *bs, void *dev); 207 void bdrv_detach_dev(BlockDriverState *bs, void *dev); 208 void *bdrv_get_attached_dev(BlockDriverState *bs); 209 void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops, 210 void *opaque); 211 void bdrv_dev_eject_request(BlockDriverState *bs, bool force); 212 bool bdrv_dev_has_removable_media(BlockDriverState *bs); 213 bool bdrv_dev_is_tray_open(BlockDriverState *bs); 214 bool bdrv_dev_is_medium_locked(BlockDriverState *bs); 215 int bdrv_read(BlockDriverState *bs, int64_t sector_num, 216 uint8_t *buf, int nb_sectors); 217 int bdrv_read_unthrottled(BlockDriverState *bs, int64_t sector_num, 218 uint8_t *buf, int nb_sectors); 219 int bdrv_write(BlockDriverState *bs, int64_t sector_num, 220 const uint8_t *buf, int nb_sectors); 221 int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, 222 int nb_sectors, BdrvRequestFlags flags); 223 BlockDriverAIOCB *bdrv_aio_write_zeroes(BlockDriverState *bs, int64_t sector_num, 224 int nb_sectors, BdrvRequestFlags flags, 225 BlockDriverCompletionFunc *cb, void *opaque); 226 int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags); 227 int bdrv_pread(BlockDriverState *bs, int64_t offset, 228 void *buf, int count); 229 int bdrv_pwrite(BlockDriverState *bs, int64_t offset, 230 const void *buf, int count); 231 int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov); 232 int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset, 233 const void *buf, int count); 234 int coroutine_fn bdrv_co_readv(BlockDriverState *bs, int64_t sector_num, 235 int nb_sectors, QEMUIOVector *qiov); 236 int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs, 237 int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); 238 int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num, 239 int nb_sectors, QEMUIOVector *qiov); 240 /* 241 * Efficiently zero a region of the disk image. Note that this is a regular 242 * I/O request like read or write and should have a reasonable size. This 243 * function is not suitable for zeroing the entire image in a single request 244 * because it may allocate memory for the entire region. 245 */ 246 int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, 247 int nb_sectors, BdrvRequestFlags flags); 248 BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs, 249 const char *backing_file); 250 int bdrv_get_backing_file_depth(BlockDriverState *bs); 251 int bdrv_truncate(BlockDriverState *bs, int64_t offset); 252 int64_t bdrv_getlength(BlockDriverState *bs); 253 int64_t bdrv_get_allocated_file_size(BlockDriverState *bs); 254 void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr); 255 int bdrv_refresh_limits(BlockDriverState *bs); 256 int bdrv_commit(BlockDriverState *bs); 257 int bdrv_commit_all(void); 258 int bdrv_change_backing_file(BlockDriverState *bs, 259 const char *backing_file, const char *backing_fmt); 260 void bdrv_register(BlockDriver *bdrv); 261 int bdrv_drop_intermediate(BlockDriverState *active, BlockDriverState *top, 262 BlockDriverState *base); 263 BlockDriverState *bdrv_find_overlay(BlockDriverState *active, 264 BlockDriverState *bs); 265 BlockDriverState *bdrv_find_base(BlockDriverState *bs); 266 267 268 typedef struct BdrvCheckResult { 269 int corruptions; 270 int leaks; 271 int check_errors; 272 int corruptions_fixed; 273 int leaks_fixed; 274 int64_t image_end_offset; 275 BlockFragInfo bfi; 276 } BdrvCheckResult; 277 278 typedef enum { 279 BDRV_FIX_LEAKS = 1, 280 BDRV_FIX_ERRORS = 2, 281 } BdrvCheckMode; 282 283 int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix); 284 285 int bdrv_amend_options(BlockDriverState *bs_new, QEMUOptionParameter *options); 286 287 /* external snapshots */ 288 289 typedef enum { 290 BS_IS_A_FILTER, 291 BS_FILTER_PASS_DOWN, 292 BS_AUTHORIZATION_COUNT, 293 } BsAuthorization; 294 295 bool bdrv_generic_is_first_non_filter(BlockDriverState *bs, 296 BlockDriverState *candidate); 297 bool bdrv_recurse_is_first_non_filter(BlockDriverState *bs, 298 BlockDriverState *candidate); 299 bool bdrv_is_first_non_filter(BlockDriverState *candidate); 300 301 /* async block I/O */ 302 typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, 303 int sector_num); 304 BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, 305 QEMUIOVector *iov, int nb_sectors, 306 BlockDriverCompletionFunc *cb, void *opaque); 307 BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, 308 QEMUIOVector *iov, int nb_sectors, 309 BlockDriverCompletionFunc *cb, void *opaque); 310 BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, 311 BlockDriverCompletionFunc *cb, void *opaque); 312 BlockDriverAIOCB *bdrv_aio_discard(BlockDriverState *bs, 313 int64_t sector_num, int nb_sectors, 314 BlockDriverCompletionFunc *cb, void *opaque); 315 void bdrv_aio_cancel(BlockDriverAIOCB *acb); 316 317 typedef struct BlockRequest { 318 /* Fields to be filled by multiwrite caller */ 319 int64_t sector; 320 int nb_sectors; 321 int flags; 322 QEMUIOVector *qiov; 323 BlockDriverCompletionFunc *cb; 324 void *opaque; 325 326 /* Filled by multiwrite implementation */ 327 int error; 328 } BlockRequest; 329 330 int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs, 331 int num_reqs); 332 333 /* sg packet commands */ 334 int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); 335 BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, 336 unsigned long int req, void *buf, 337 BlockDriverCompletionFunc *cb, void *opaque); 338 339 /* Invalidate any cached metadata used by image formats */ 340 void bdrv_invalidate_cache(BlockDriverState *bs); 341 void bdrv_invalidate_cache_all(void); 342 343 void bdrv_clear_incoming_migration_all(void); 344 345 /* Ensure contents are flushed to disk. */ 346 int bdrv_flush(BlockDriverState *bs); 347 int coroutine_fn bdrv_co_flush(BlockDriverState *bs); 348 int bdrv_flush_all(void); 349 void bdrv_close_all(void); 350 void bdrv_drain_all(void); 351 352 int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 353 int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 354 int bdrv_has_zero_init_1(BlockDriverState *bs); 355 int bdrv_has_zero_init(BlockDriverState *bs); 356 bool bdrv_unallocated_blocks_are_zero(BlockDriverState *bs); 357 bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs); 358 int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num, 359 int nb_sectors, int *pnum); 360 int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, 361 int *pnum); 362 int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base, 363 int64_t sector_num, int nb_sectors, int *pnum); 364 365 void bdrv_set_on_error(BlockDriverState *bs, BlockdevOnError on_read_error, 366 BlockdevOnError on_write_error); 367 BlockdevOnError bdrv_get_on_error(BlockDriverState *bs, bool is_read); 368 BlockErrorAction bdrv_get_error_action(BlockDriverState *bs, bool is_read, int error); 369 void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action, 370 bool is_read, int error); 371 int bdrv_is_read_only(BlockDriverState *bs); 372 int bdrv_is_sg(BlockDriverState *bs); 373 int bdrv_enable_write_cache(BlockDriverState *bs); 374 void bdrv_set_enable_write_cache(BlockDriverState *bs, bool wce); 375 int bdrv_is_inserted(BlockDriverState *bs); 376 int bdrv_media_changed(BlockDriverState *bs); 377 void bdrv_lock_medium(BlockDriverState *bs, bool locked); 378 void bdrv_eject(BlockDriverState *bs, bool eject_flag); 379 const char *bdrv_get_format_name(BlockDriverState *bs); 380 BlockDriverState *bdrv_find(const char *name); 381 BlockDriverState *bdrv_find_node(const char *node_name); 382 BlockDeviceInfoList *bdrv_named_nodes_list(void); 383 BlockDriverState *bdrv_lookup_bs(const char *device, 384 const char *node_name, 385 Error **errp); 386 BlockDriverState *bdrv_next(BlockDriverState *bs); 387 void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), 388 void *opaque); 389 int bdrv_is_encrypted(BlockDriverState *bs); 390 int bdrv_key_required(BlockDriverState *bs); 391 int bdrv_set_key(BlockDriverState *bs, const char *key); 392 int bdrv_query_missing_keys(void); 393 void bdrv_iterate_format(void (*it)(void *opaque, const char *name), 394 void *opaque); 395 const char *bdrv_get_device_name(BlockDriverState *bs); 396 int bdrv_get_flags(BlockDriverState *bs); 397 int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, 398 const uint8_t *buf, int nb_sectors); 399 int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); 400 ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs); 401 void bdrv_round_to_clusters(BlockDriverState *bs, 402 int64_t sector_num, int nb_sectors, 403 int64_t *cluster_sector_num, 404 int *cluster_nb_sectors); 405 406 const char *bdrv_get_encrypted_filename(BlockDriverState *bs); 407 void bdrv_get_backing_filename(BlockDriverState *bs, 408 char *filename, int filename_size); 409 void bdrv_get_full_backing_filename(BlockDriverState *bs, 410 char *dest, size_t sz); 411 int bdrv_is_snapshot(BlockDriverState *bs); 412 413 int path_is_absolute(const char *path); 414 void path_combine(char *dest, int dest_size, 415 const char *base_path, 416 const char *filename); 417 418 int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos); 419 int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, 420 int64_t pos, int size); 421 422 int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, 423 int64_t pos, int size); 424 425 void bdrv_img_create(const char *filename, const char *fmt, 426 const char *base_filename, const char *base_fmt, 427 char *options, uint64_t img_size, int flags, 428 Error **errp, bool quiet); 429 430 /* Returns the alignment in bytes that is required so that no bounce buffer 431 * is required throughout the stack */ 432 size_t bdrv_opt_mem_align(BlockDriverState *bs); 433 void bdrv_set_guest_block_size(BlockDriverState *bs, int align); 434 void *qemu_blockalign(BlockDriverState *bs, size_t size); 435 bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov); 436 437 struct HBitmapIter; 438 typedef struct BdrvDirtyBitmap BdrvDirtyBitmap; 439 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, int granularity); 440 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 441 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs); 442 int bdrv_get_dirty(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, int64_t sector); 443 void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 444 void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 445 void bdrv_dirty_iter_init(BlockDriverState *bs, 446 BdrvDirtyBitmap *bitmap, struct HBitmapIter *hbi); 447 int64_t bdrv_get_dirty_count(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 448 449 void bdrv_enable_copy_on_read(BlockDriverState *bs); 450 void bdrv_disable_copy_on_read(BlockDriverState *bs); 451 452 void bdrv_ref(BlockDriverState *bs); 453 void bdrv_unref(BlockDriverState *bs); 454 void bdrv_set_in_use(BlockDriverState *bs, int in_use); 455 int bdrv_in_use(BlockDriverState *bs); 456 457 #ifdef CONFIG_LINUX_AIO 458 int raw_get_aio_fd(BlockDriverState *bs); 459 #else 460 static inline int raw_get_aio_fd(BlockDriverState *bs) 461 { 462 return -ENOTSUP; 463 } 464 #endif 465 466 enum BlockAcctType { 467 BDRV_ACCT_READ, 468 BDRV_ACCT_WRITE, 469 BDRV_ACCT_FLUSH, 470 BDRV_MAX_IOTYPE, 471 }; 472 473 typedef struct BlockAcctCookie { 474 int64_t bytes; 475 int64_t start_time_ns; 476 enum BlockAcctType type; 477 } BlockAcctCookie; 478 479 void bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie, 480 int64_t bytes, enum BlockAcctType type); 481 void bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie); 482 483 typedef enum { 484 BLKDBG_L1_UPDATE, 485 486 BLKDBG_L1_GROW_ALLOC_TABLE, 487 BLKDBG_L1_GROW_WRITE_TABLE, 488 BLKDBG_L1_GROW_ACTIVATE_TABLE, 489 490 BLKDBG_L2_LOAD, 491 BLKDBG_L2_UPDATE, 492 BLKDBG_L2_UPDATE_COMPRESSED, 493 BLKDBG_L2_ALLOC_COW_READ, 494 BLKDBG_L2_ALLOC_WRITE, 495 496 BLKDBG_READ_AIO, 497 BLKDBG_READ_BACKING_AIO, 498 BLKDBG_READ_COMPRESSED, 499 500 BLKDBG_WRITE_AIO, 501 BLKDBG_WRITE_COMPRESSED, 502 503 BLKDBG_VMSTATE_LOAD, 504 BLKDBG_VMSTATE_SAVE, 505 506 BLKDBG_COW_READ, 507 BLKDBG_COW_WRITE, 508 509 BLKDBG_REFTABLE_LOAD, 510 BLKDBG_REFTABLE_GROW, 511 BLKDBG_REFTABLE_UPDATE, 512 513 BLKDBG_REFBLOCK_LOAD, 514 BLKDBG_REFBLOCK_UPDATE, 515 BLKDBG_REFBLOCK_UPDATE_PART, 516 BLKDBG_REFBLOCK_ALLOC, 517 BLKDBG_REFBLOCK_ALLOC_HOOKUP, 518 BLKDBG_REFBLOCK_ALLOC_WRITE, 519 BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS, 520 BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE, 521 BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE, 522 523 BLKDBG_CLUSTER_ALLOC, 524 BLKDBG_CLUSTER_ALLOC_BYTES, 525 BLKDBG_CLUSTER_FREE, 526 527 BLKDBG_FLUSH_TO_OS, 528 BLKDBG_FLUSH_TO_DISK, 529 530 BLKDBG_PWRITEV_RMW_HEAD, 531 BLKDBG_PWRITEV_RMW_AFTER_HEAD, 532 BLKDBG_PWRITEV_RMW_TAIL, 533 BLKDBG_PWRITEV_RMW_AFTER_TAIL, 534 BLKDBG_PWRITEV, 535 BLKDBG_PWRITEV_ZERO, 536 BLKDBG_PWRITEV_DONE, 537 538 BLKDBG_EVENT_MAX, 539 } BlkDebugEvent; 540 541 #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt) 542 void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event); 543 544 int bdrv_debug_breakpoint(BlockDriverState *bs, const char *event, 545 const char *tag); 546 int bdrv_debug_remove_breakpoint(BlockDriverState *bs, const char *tag); 547 int bdrv_debug_resume(BlockDriverState *bs, const char *tag); 548 bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag); 549 550 #endif 551