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 #define BDRV_O_PROTOCOL 0x8000 /* if no block driver is explicitly given: 106 select an appropriate protocol driver, 107 ignoring the format layer */ 108 109 #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) 110 111 #define BDRV_SECTOR_BITS 9 112 #define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS) 113 #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1) 114 115 /* BDRV_BLOCK_DATA: data is read from bs->file or another file 116 * BDRV_BLOCK_ZERO: sectors read as zero 117 * BDRV_BLOCK_OFFSET_VALID: sector stored in bs->file as raw data 118 * BDRV_BLOCK_RAW: used internally to indicate that the request 119 * was answered by the raw driver and that one 120 * should look in bs->file directly. 121 * 122 * If BDRV_BLOCK_OFFSET_VALID is set, bits 9-62 represent the offset in 123 * bs->file where sector data can be read from as raw data. 124 * 125 * DATA == 0 && ZERO == 0 means that data is read from backing_hd if present. 126 * 127 * DATA ZERO OFFSET_VALID 128 * t t t sectors read as zero, bs->file is zero at offset 129 * t f t sectors read as valid from bs->file at offset 130 * f t t sectors preallocated, read as zero, bs->file not 131 * necessarily zero at offset 132 * f f t sectors preallocated but read from backing_hd, 133 * bs->file contains garbage at offset 134 * t t f sectors preallocated, read as zero, unknown offset 135 * t f f sectors read from unknown file or offset 136 * f t f not allocated or unknown offset, read as zero 137 * f f f not allocated or unknown offset, read from backing_hd 138 */ 139 #define BDRV_BLOCK_DATA 1 140 #define BDRV_BLOCK_ZERO 2 141 #define BDRV_BLOCK_OFFSET_VALID 4 142 #define BDRV_BLOCK_RAW 8 143 #define BDRV_BLOCK_OFFSET_MASK BDRV_SECTOR_MASK 144 145 typedef enum { 146 BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP 147 } BlockErrorAction; 148 149 typedef QSIMPLEQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue; 150 151 typedef struct BDRVReopenState { 152 BlockDriverState *bs; 153 int flags; 154 void *opaque; 155 } BDRVReopenState; 156 157 158 void bdrv_iostatus_enable(BlockDriverState *bs); 159 void bdrv_iostatus_reset(BlockDriverState *bs); 160 void bdrv_iostatus_disable(BlockDriverState *bs); 161 bool bdrv_iostatus_is_enabled(const BlockDriverState *bs); 162 void bdrv_iostatus_set_err(BlockDriverState *bs, int error); 163 void bdrv_info_print(Monitor *mon, const QObject *data); 164 void bdrv_info(Monitor *mon, QObject **ret_data); 165 void bdrv_stats_print(Monitor *mon, const QObject *data); 166 void bdrv_info_stats(Monitor *mon, QObject **ret_data); 167 168 /* disk I/O throttling */ 169 void bdrv_io_limits_enable(BlockDriverState *bs); 170 void bdrv_io_limits_disable(BlockDriverState *bs); 171 172 void bdrv_init(void); 173 void bdrv_init_with_whitelist(void); 174 BlockDriver *bdrv_find_protocol(const char *filename, 175 bool allow_protocol_prefix); 176 BlockDriver *bdrv_find_format(const char *format_name); 177 BlockDriver *bdrv_find_whitelisted_format(const char *format_name, 178 bool readonly); 179 int bdrv_create(BlockDriver *drv, const char* filename, 180 QEMUOptionParameter *options, Error **errp); 181 int bdrv_create_file(const char* filename, QEMUOptionParameter *options, 182 Error **errp); 183 BlockDriverState *bdrv_new(const char *device_name); 184 void bdrv_make_anon(BlockDriverState *bs); 185 void bdrv_swap(BlockDriverState *bs_new, BlockDriverState *bs_old); 186 void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top); 187 int bdrv_parse_cache_flags(const char *mode, int *flags); 188 int bdrv_parse_discard_flags(const char *mode, int *flags); 189 int bdrv_open_image(BlockDriverState **pbs, const char *filename, 190 QDict *options, const char *bdref_key, int flags, 191 bool allow_none, Error **errp); 192 int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp); 193 int bdrv_open(BlockDriverState **pbs, const char *filename, 194 const char *reference, QDict *options, int flags, 195 BlockDriver *drv, Error **errp); 196 BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue, 197 BlockDriverState *bs, int flags); 198 int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp); 199 int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp); 200 int bdrv_reopen_prepare(BDRVReopenState *reopen_state, 201 BlockReopenQueue *queue, Error **errp); 202 void bdrv_reopen_commit(BDRVReopenState *reopen_state); 203 void bdrv_reopen_abort(BDRVReopenState *reopen_state); 204 void bdrv_close(BlockDriverState *bs); 205 void bdrv_add_close_notifier(BlockDriverState *bs, Notifier *notify); 206 int bdrv_attach_dev(BlockDriverState *bs, void *dev); 207 void bdrv_attach_dev_nofail(BlockDriverState *bs, void *dev); 208 void bdrv_detach_dev(BlockDriverState *bs, void *dev); 209 void *bdrv_get_attached_dev(BlockDriverState *bs); 210 void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops, 211 void *opaque); 212 void bdrv_dev_eject_request(BlockDriverState *bs, bool force); 213 bool bdrv_dev_has_removable_media(BlockDriverState *bs); 214 bool bdrv_dev_is_tray_open(BlockDriverState *bs); 215 bool bdrv_dev_is_medium_locked(BlockDriverState *bs); 216 int bdrv_read(BlockDriverState *bs, int64_t sector_num, 217 uint8_t *buf, int nb_sectors); 218 int bdrv_read_unthrottled(BlockDriverState *bs, int64_t sector_num, 219 uint8_t *buf, int nb_sectors); 220 int bdrv_write(BlockDriverState *bs, int64_t sector_num, 221 const uint8_t *buf, int nb_sectors); 222 int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, 223 int nb_sectors, BdrvRequestFlags flags); 224 BlockDriverAIOCB *bdrv_aio_write_zeroes(BlockDriverState *bs, int64_t sector_num, 225 int nb_sectors, BdrvRequestFlags flags, 226 BlockDriverCompletionFunc *cb, void *opaque); 227 int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags); 228 int bdrv_pread(BlockDriverState *bs, int64_t offset, 229 void *buf, int count); 230 int bdrv_pwrite(BlockDriverState *bs, int64_t offset, 231 const void *buf, int count); 232 int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov); 233 int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset, 234 const void *buf, int count); 235 int coroutine_fn bdrv_co_readv(BlockDriverState *bs, int64_t sector_num, 236 int nb_sectors, QEMUIOVector *qiov); 237 int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs, 238 int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); 239 int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num, 240 int nb_sectors, QEMUIOVector *qiov); 241 /* 242 * Efficiently zero a region of the disk image. Note that this is a regular 243 * I/O request like read or write and should have a reasonable size. This 244 * function is not suitable for zeroing the entire image in a single request 245 * because it may allocate memory for the entire region. 246 */ 247 int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, 248 int nb_sectors, BdrvRequestFlags flags); 249 BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs, 250 const char *backing_file); 251 int bdrv_get_backing_file_depth(BlockDriverState *bs); 252 int bdrv_truncate(BlockDriverState *bs, int64_t offset); 253 int64_t bdrv_getlength(BlockDriverState *bs); 254 int64_t bdrv_get_allocated_file_size(BlockDriverState *bs); 255 void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr); 256 int bdrv_refresh_limits(BlockDriverState *bs); 257 int bdrv_commit(BlockDriverState *bs); 258 int bdrv_commit_all(void); 259 int bdrv_change_backing_file(BlockDriverState *bs, 260 const char *backing_file, const char *backing_fmt); 261 void bdrv_register(BlockDriver *bdrv); 262 int bdrv_drop_intermediate(BlockDriverState *active, BlockDriverState *top, 263 BlockDriverState *base); 264 BlockDriverState *bdrv_find_overlay(BlockDriverState *active, 265 BlockDriverState *bs); 266 BlockDriverState *bdrv_find_base(BlockDriverState *bs); 267 268 269 typedef struct BdrvCheckResult { 270 int corruptions; 271 int leaks; 272 int check_errors; 273 int corruptions_fixed; 274 int leaks_fixed; 275 int64_t image_end_offset; 276 BlockFragInfo bfi; 277 } BdrvCheckResult; 278 279 typedef enum { 280 BDRV_FIX_LEAKS = 1, 281 BDRV_FIX_ERRORS = 2, 282 } BdrvCheckMode; 283 284 int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix); 285 286 int bdrv_amend_options(BlockDriverState *bs_new, QEMUOptionParameter *options); 287 288 /* external snapshots */ 289 290 typedef enum { 291 BS_IS_A_FILTER, 292 BS_FILTER_PASS_DOWN, 293 BS_AUTHORIZATION_COUNT, 294 } BsAuthorization; 295 296 bool bdrv_generic_is_first_non_filter(BlockDriverState *bs, 297 BlockDriverState *candidate); 298 bool bdrv_recurse_is_first_non_filter(BlockDriverState *bs, 299 BlockDriverState *candidate); 300 bool bdrv_is_first_non_filter(BlockDriverState *candidate); 301 302 /* async block I/O */ 303 typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, 304 int sector_num); 305 BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, 306 QEMUIOVector *iov, int nb_sectors, 307 BlockDriverCompletionFunc *cb, void *opaque); 308 BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, 309 QEMUIOVector *iov, int nb_sectors, 310 BlockDriverCompletionFunc *cb, void *opaque); 311 BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, 312 BlockDriverCompletionFunc *cb, void *opaque); 313 BlockDriverAIOCB *bdrv_aio_discard(BlockDriverState *bs, 314 int64_t sector_num, int nb_sectors, 315 BlockDriverCompletionFunc *cb, void *opaque); 316 void bdrv_aio_cancel(BlockDriverAIOCB *acb); 317 318 typedef struct BlockRequest { 319 /* Fields to be filled by multiwrite caller */ 320 int64_t sector; 321 int nb_sectors; 322 int flags; 323 QEMUIOVector *qiov; 324 BlockDriverCompletionFunc *cb; 325 void *opaque; 326 327 /* Filled by multiwrite implementation */ 328 int error; 329 } BlockRequest; 330 331 int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs, 332 int num_reqs); 333 334 /* sg packet commands */ 335 int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); 336 BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, 337 unsigned long int req, void *buf, 338 BlockDriverCompletionFunc *cb, void *opaque); 339 340 /* Invalidate any cached metadata used by image formats */ 341 void bdrv_invalidate_cache(BlockDriverState *bs); 342 void bdrv_invalidate_cache_all(void); 343 344 void bdrv_clear_incoming_migration_all(void); 345 346 /* Ensure contents are flushed to disk. */ 347 int bdrv_flush(BlockDriverState *bs); 348 int coroutine_fn bdrv_co_flush(BlockDriverState *bs); 349 int bdrv_flush_all(void); 350 void bdrv_close_all(void); 351 void bdrv_drain_all(void); 352 353 int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 354 int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 355 int bdrv_has_zero_init_1(BlockDriverState *bs); 356 int bdrv_has_zero_init(BlockDriverState *bs); 357 bool bdrv_unallocated_blocks_are_zero(BlockDriverState *bs); 358 bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs); 359 int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num, 360 int nb_sectors, int *pnum); 361 int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, 362 int *pnum); 363 int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base, 364 int64_t sector_num, int nb_sectors, int *pnum); 365 366 void bdrv_set_on_error(BlockDriverState *bs, BlockdevOnError on_read_error, 367 BlockdevOnError on_write_error); 368 BlockdevOnError bdrv_get_on_error(BlockDriverState *bs, bool is_read); 369 BlockErrorAction bdrv_get_error_action(BlockDriverState *bs, bool is_read, int error); 370 void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action, 371 bool is_read, int error); 372 int bdrv_is_read_only(BlockDriverState *bs); 373 int bdrv_is_sg(BlockDriverState *bs); 374 int bdrv_enable_write_cache(BlockDriverState *bs); 375 void bdrv_set_enable_write_cache(BlockDriverState *bs, bool wce); 376 int bdrv_is_inserted(BlockDriverState *bs); 377 int bdrv_media_changed(BlockDriverState *bs); 378 void bdrv_lock_medium(BlockDriverState *bs, bool locked); 379 void bdrv_eject(BlockDriverState *bs, bool eject_flag); 380 const char *bdrv_get_format_name(BlockDriverState *bs); 381 BlockDriverState *bdrv_find(const char *name); 382 BlockDriverState *bdrv_find_node(const char *node_name); 383 BlockDeviceInfoList *bdrv_named_nodes_list(void); 384 BlockDriverState *bdrv_lookup_bs(const char *device, 385 const char *node_name, 386 Error **errp); 387 BlockDriverState *bdrv_next(BlockDriverState *bs); 388 void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), 389 void *opaque); 390 int bdrv_is_encrypted(BlockDriverState *bs); 391 int bdrv_key_required(BlockDriverState *bs); 392 int bdrv_set_key(BlockDriverState *bs, const char *key); 393 int bdrv_query_missing_keys(void); 394 void bdrv_iterate_format(void (*it)(void *opaque, const char *name), 395 void *opaque); 396 const char *bdrv_get_device_name(BlockDriverState *bs); 397 int bdrv_get_flags(BlockDriverState *bs); 398 int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, 399 const uint8_t *buf, int nb_sectors); 400 int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); 401 ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs); 402 void bdrv_round_to_clusters(BlockDriverState *bs, 403 int64_t sector_num, int nb_sectors, 404 int64_t *cluster_sector_num, 405 int *cluster_nb_sectors); 406 407 const char *bdrv_get_encrypted_filename(BlockDriverState *bs); 408 void bdrv_get_backing_filename(BlockDriverState *bs, 409 char *filename, int filename_size); 410 void bdrv_get_full_backing_filename(BlockDriverState *bs, 411 char *dest, size_t sz); 412 int bdrv_is_snapshot(BlockDriverState *bs); 413 414 int path_is_absolute(const char *path); 415 void path_combine(char *dest, int dest_size, 416 const char *base_path, 417 const char *filename); 418 419 int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos); 420 int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, 421 int64_t pos, int size); 422 423 int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, 424 int64_t pos, int size); 425 426 void bdrv_img_create(const char *filename, const char *fmt, 427 const char *base_filename, const char *base_fmt, 428 char *options, uint64_t img_size, int flags, 429 Error **errp, bool quiet); 430 431 /* Returns the alignment in bytes that is required so that no bounce buffer 432 * is required throughout the stack */ 433 size_t bdrv_opt_mem_align(BlockDriverState *bs); 434 void bdrv_set_guest_block_size(BlockDriverState *bs, int align); 435 void *qemu_blockalign(BlockDriverState *bs, size_t size); 436 bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov); 437 438 struct HBitmapIter; 439 typedef struct BdrvDirtyBitmap BdrvDirtyBitmap; 440 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, int granularity); 441 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 442 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs); 443 int bdrv_get_dirty(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, int64_t sector); 444 void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 445 void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 446 void bdrv_dirty_iter_init(BlockDriverState *bs, 447 BdrvDirtyBitmap *bitmap, struct HBitmapIter *hbi); 448 int64_t bdrv_get_dirty_count(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 449 450 void bdrv_enable_copy_on_read(BlockDriverState *bs); 451 void bdrv_disable_copy_on_read(BlockDriverState *bs); 452 453 void bdrv_ref(BlockDriverState *bs); 454 void bdrv_unref(BlockDriverState *bs); 455 void bdrv_set_in_use(BlockDriverState *bs, int in_use); 456 int bdrv_in_use(BlockDriverState *bs); 457 458 #ifdef CONFIG_LINUX_AIO 459 int raw_get_aio_fd(BlockDriverState *bs); 460 #else 461 static inline int raw_get_aio_fd(BlockDriverState *bs) 462 { 463 return -ENOTSUP; 464 } 465 #endif 466 467 enum BlockAcctType { 468 BDRV_ACCT_READ, 469 BDRV_ACCT_WRITE, 470 BDRV_ACCT_FLUSH, 471 BDRV_MAX_IOTYPE, 472 }; 473 474 typedef struct BlockAcctCookie { 475 int64_t bytes; 476 int64_t start_time_ns; 477 enum BlockAcctType type; 478 } BlockAcctCookie; 479 480 void bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie, 481 int64_t bytes, enum BlockAcctType type); 482 void bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie); 483 484 typedef enum { 485 BLKDBG_L1_UPDATE, 486 487 BLKDBG_L1_GROW_ALLOC_TABLE, 488 BLKDBG_L1_GROW_WRITE_TABLE, 489 BLKDBG_L1_GROW_ACTIVATE_TABLE, 490 491 BLKDBG_L2_LOAD, 492 BLKDBG_L2_UPDATE, 493 BLKDBG_L2_UPDATE_COMPRESSED, 494 BLKDBG_L2_ALLOC_COW_READ, 495 BLKDBG_L2_ALLOC_WRITE, 496 497 BLKDBG_READ_AIO, 498 BLKDBG_READ_BACKING_AIO, 499 BLKDBG_READ_COMPRESSED, 500 501 BLKDBG_WRITE_AIO, 502 BLKDBG_WRITE_COMPRESSED, 503 504 BLKDBG_VMSTATE_LOAD, 505 BLKDBG_VMSTATE_SAVE, 506 507 BLKDBG_COW_READ, 508 BLKDBG_COW_WRITE, 509 510 BLKDBG_REFTABLE_LOAD, 511 BLKDBG_REFTABLE_GROW, 512 BLKDBG_REFTABLE_UPDATE, 513 514 BLKDBG_REFBLOCK_LOAD, 515 BLKDBG_REFBLOCK_UPDATE, 516 BLKDBG_REFBLOCK_UPDATE_PART, 517 BLKDBG_REFBLOCK_ALLOC, 518 BLKDBG_REFBLOCK_ALLOC_HOOKUP, 519 BLKDBG_REFBLOCK_ALLOC_WRITE, 520 BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS, 521 BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE, 522 BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE, 523 524 BLKDBG_CLUSTER_ALLOC, 525 BLKDBG_CLUSTER_ALLOC_BYTES, 526 BLKDBG_CLUSTER_FREE, 527 528 BLKDBG_FLUSH_TO_OS, 529 BLKDBG_FLUSH_TO_DISK, 530 531 BLKDBG_PWRITEV_RMW_HEAD, 532 BLKDBG_PWRITEV_RMW_AFTER_HEAD, 533 BLKDBG_PWRITEV_RMW_TAIL, 534 BLKDBG_PWRITEV_RMW_AFTER_TAIL, 535 BLKDBG_PWRITEV, 536 BLKDBG_PWRITEV_ZERO, 537 BLKDBG_PWRITEV_DONE, 538 539 BLKDBG_EVENT_MAX, 540 } BlkDebugEvent; 541 542 #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt) 543 void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event); 544 545 int bdrv_debug_breakpoint(BlockDriverState *bs, const char *event, 546 const char *tag); 547 int bdrv_debug_remove_breakpoint(BlockDriverState *bs, const char *tag); 548 int bdrv_debug_resume(BlockDriverState *bs, const char *tag); 549 bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag); 550 551 #endif 552