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 /* 38 * True if this block driver only supports compressed writes 39 */ 40 bool needs_compressed_writes; 41 } BlockDriverInfo; 42 43 typedef struct BlockFragInfo { 44 uint64_t allocated_clusters; 45 uint64_t total_clusters; 46 uint64_t fragmented_clusters; 47 uint64_t compressed_clusters; 48 } BlockFragInfo; 49 50 /* Callbacks for block device models */ 51 typedef struct BlockDevOps { 52 /* 53 * Runs when virtual media changed (monitor commands eject, change) 54 * Argument load is true on load and false on eject. 55 * Beware: doesn't run when a host device's physical media 56 * changes. Sure would be useful if it did. 57 * Device models with removable media must implement this callback. 58 */ 59 void (*change_media_cb)(void *opaque, bool load); 60 /* 61 * Runs when an eject request is issued from the monitor, the tray 62 * is closed, and the medium is locked. 63 * Device models that do not implement is_medium_locked will not need 64 * this callback. Device models that can lock the medium or tray might 65 * want to implement the callback and unlock the tray when "force" is 66 * true, even if they do not support eject requests. 67 */ 68 void (*eject_request_cb)(void *opaque, bool force); 69 /* 70 * Is the virtual tray open? 71 * Device models implement this only when the device has a tray. 72 */ 73 bool (*is_tray_open)(void *opaque); 74 /* 75 * Is the virtual medium locked into the device? 76 * Device models implement this only when device has such a lock. 77 */ 78 bool (*is_medium_locked)(void *opaque); 79 /* 80 * Runs when the size changed (e.g. monitor command block_resize) 81 */ 82 void (*resize_cb)(void *opaque); 83 } BlockDevOps; 84 85 typedef enum { 86 BDRV_REQ_COPY_ON_READ = 0x1, 87 BDRV_REQ_ZERO_WRITE = 0x2, 88 /* The BDRV_REQ_MAY_UNMAP flag is used to indicate that the block driver 89 * is allowed to optimize a write zeroes request by unmapping (discarding) 90 * blocks if it is guaranteed that the result will read back as 91 * zeroes. The flag is only passed to the driver if the block device is 92 * opened with BDRV_O_UNMAP. 93 */ 94 BDRV_REQ_MAY_UNMAP = 0x4, 95 } BdrvRequestFlags; 96 97 #define BDRV_O_RDWR 0x0002 98 #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ 99 #define BDRV_O_TEMPORARY 0x0010 /* delete the file after use */ 100 #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ 101 #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */ 102 #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */ 103 #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */ 104 #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */ 105 #define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */ 106 #define BDRV_O_INCOMING 0x0800 /* consistency hint for incoming migration */ 107 #define BDRV_O_CHECK 0x1000 /* open solely for consistency check */ 108 #define BDRV_O_ALLOW_RDWR 0x2000 /* allow reopen to change from r/o to r/w */ 109 #define BDRV_O_UNMAP 0x4000 /* execute guest UNMAP/TRIM operations */ 110 #define BDRV_O_PROTOCOL 0x8000 /* if no block driver is explicitly given: 111 select an appropriate protocol driver, 112 ignoring the format layer */ 113 114 #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) 115 116 #define BDRV_SECTOR_BITS 9 117 #define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS) 118 #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1) 119 120 /* BDRV_BLOCK_DATA: data is read from bs->file or another file 121 * BDRV_BLOCK_ZERO: sectors read as zero 122 * BDRV_BLOCK_OFFSET_VALID: sector stored in bs->file as raw data 123 * BDRV_BLOCK_RAW: used internally to indicate that the request 124 * was answered by the raw driver and that one 125 * should look in bs->file directly. 126 * 127 * If BDRV_BLOCK_OFFSET_VALID is set, bits 9-62 represent the offset in 128 * bs->file where sector data can be read from as raw data. 129 * 130 * DATA == 0 && ZERO == 0 means that data is read from backing_hd if present. 131 * 132 * DATA ZERO OFFSET_VALID 133 * t t t sectors read as zero, bs->file is zero at offset 134 * t f t sectors read as valid from bs->file at offset 135 * f t t sectors preallocated, read as zero, bs->file not 136 * necessarily zero at offset 137 * f f t sectors preallocated but read from backing_hd, 138 * bs->file contains garbage at offset 139 * t t f sectors preallocated, read as zero, unknown offset 140 * t f f sectors read from unknown file or offset 141 * f t f not allocated or unknown offset, read as zero 142 * f f f not allocated or unknown offset, read from backing_hd 143 */ 144 #define BDRV_BLOCK_DATA 1 145 #define BDRV_BLOCK_ZERO 2 146 #define BDRV_BLOCK_OFFSET_VALID 4 147 #define BDRV_BLOCK_RAW 8 148 #define BDRV_BLOCK_OFFSET_MASK BDRV_SECTOR_MASK 149 150 typedef enum { 151 BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP 152 } BlockErrorAction; 153 154 typedef QSIMPLEQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue; 155 156 typedef struct BDRVReopenState { 157 BlockDriverState *bs; 158 int flags; 159 void *opaque; 160 } BDRVReopenState; 161 162 163 void bdrv_iostatus_enable(BlockDriverState *bs); 164 void bdrv_iostatus_reset(BlockDriverState *bs); 165 void bdrv_iostatus_disable(BlockDriverState *bs); 166 bool bdrv_iostatus_is_enabled(const BlockDriverState *bs); 167 void bdrv_iostatus_set_err(BlockDriverState *bs, int error); 168 void bdrv_info_print(Monitor *mon, const QObject *data); 169 void bdrv_info(Monitor *mon, QObject **ret_data); 170 void bdrv_stats_print(Monitor *mon, const QObject *data); 171 void bdrv_info_stats(Monitor *mon, QObject **ret_data); 172 173 /* disk I/O throttling */ 174 void bdrv_io_limits_enable(BlockDriverState *bs); 175 void bdrv_io_limits_disable(BlockDriverState *bs); 176 177 void bdrv_init(void); 178 void bdrv_init_with_whitelist(void); 179 BlockDriver *bdrv_find_protocol(const char *filename, 180 bool allow_protocol_prefix); 181 BlockDriver *bdrv_find_format(const char *format_name); 182 BlockDriver *bdrv_find_whitelisted_format(const char *format_name, 183 bool readonly); 184 int bdrv_create(BlockDriver *drv, const char* filename, 185 QEMUOptionParameter *options, Error **errp); 186 int bdrv_create_file(const char* filename, QEMUOptionParameter *options, 187 Error **errp); 188 BlockDriverState *bdrv_new(const char *device_name, Error **errp); 189 void bdrv_make_anon(BlockDriverState *bs); 190 void bdrv_swap(BlockDriverState *bs_new, BlockDriverState *bs_old); 191 void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top); 192 int bdrv_parse_cache_flags(const char *mode, int *flags); 193 int bdrv_parse_discard_flags(const char *mode, int *flags); 194 int bdrv_open_image(BlockDriverState **pbs, const char *filename, 195 QDict *options, const char *bdref_key, int flags, 196 bool allow_none, Error **errp); 197 int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp); 198 void bdrv_append_temp_snapshot(BlockDriverState *bs, int flags, Error **errp); 199 int bdrv_open(BlockDriverState **pbs, const char *filename, 200 const char *reference, QDict *options, int flags, 201 BlockDriver *drv, Error **errp); 202 BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue, 203 BlockDriverState *bs, int flags); 204 int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp); 205 int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp); 206 int bdrv_reopen_prepare(BDRVReopenState *reopen_state, 207 BlockReopenQueue *queue, Error **errp); 208 void bdrv_reopen_commit(BDRVReopenState *reopen_state); 209 void bdrv_reopen_abort(BDRVReopenState *reopen_state); 210 void bdrv_close(BlockDriverState *bs); 211 void bdrv_add_close_notifier(BlockDriverState *bs, Notifier *notify); 212 int bdrv_attach_dev(BlockDriverState *bs, void *dev); 213 void bdrv_attach_dev_nofail(BlockDriverState *bs, void *dev); 214 void bdrv_detach_dev(BlockDriverState *bs, void *dev); 215 void *bdrv_get_attached_dev(BlockDriverState *bs); 216 void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops, 217 void *opaque); 218 void bdrv_dev_eject_request(BlockDriverState *bs, bool force); 219 bool bdrv_dev_has_removable_media(BlockDriverState *bs); 220 bool bdrv_dev_is_tray_open(BlockDriverState *bs); 221 bool bdrv_dev_is_medium_locked(BlockDriverState *bs); 222 int bdrv_read(BlockDriverState *bs, int64_t sector_num, 223 uint8_t *buf, int nb_sectors); 224 int bdrv_read_unthrottled(BlockDriverState *bs, int64_t sector_num, 225 uint8_t *buf, int nb_sectors); 226 int bdrv_write(BlockDriverState *bs, int64_t sector_num, 227 const uint8_t *buf, int nb_sectors); 228 int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, 229 int nb_sectors, BdrvRequestFlags flags); 230 BlockDriverAIOCB *bdrv_aio_write_zeroes(BlockDriverState *bs, int64_t sector_num, 231 int nb_sectors, BdrvRequestFlags flags, 232 BlockDriverCompletionFunc *cb, void *opaque); 233 int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags); 234 int bdrv_pread(BlockDriverState *bs, int64_t offset, 235 void *buf, int count); 236 int bdrv_pwrite(BlockDriverState *bs, int64_t offset, 237 const void *buf, int count); 238 int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov); 239 int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset, 240 const void *buf, int count); 241 int coroutine_fn bdrv_co_readv(BlockDriverState *bs, int64_t sector_num, 242 int nb_sectors, QEMUIOVector *qiov); 243 int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs, 244 int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); 245 int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num, 246 int nb_sectors, QEMUIOVector *qiov); 247 /* 248 * Efficiently zero a region of the disk image. Note that this is a regular 249 * I/O request like read or write and should have a reasonable size. This 250 * function is not suitable for zeroing the entire image in a single request 251 * because it may allocate memory for the entire region. 252 */ 253 int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, 254 int nb_sectors, BdrvRequestFlags flags); 255 BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs, 256 const char *backing_file); 257 int bdrv_get_backing_file_depth(BlockDriverState *bs); 258 int bdrv_truncate(BlockDriverState *bs, int64_t offset); 259 int64_t bdrv_getlength(BlockDriverState *bs); 260 int64_t bdrv_get_allocated_file_size(BlockDriverState *bs); 261 void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr); 262 int bdrv_refresh_limits(BlockDriverState *bs); 263 int bdrv_commit(BlockDriverState *bs); 264 int bdrv_commit_all(void); 265 int bdrv_change_backing_file(BlockDriverState *bs, 266 const char *backing_file, const char *backing_fmt); 267 void bdrv_register(BlockDriver *bdrv); 268 int bdrv_drop_intermediate(BlockDriverState *active, BlockDriverState *top, 269 BlockDriverState *base); 270 BlockDriverState *bdrv_find_overlay(BlockDriverState *active, 271 BlockDriverState *bs); 272 BlockDriverState *bdrv_find_base(BlockDriverState *bs); 273 274 275 typedef struct BdrvCheckResult { 276 int corruptions; 277 int leaks; 278 int check_errors; 279 int corruptions_fixed; 280 int leaks_fixed; 281 int64_t image_end_offset; 282 BlockFragInfo bfi; 283 } BdrvCheckResult; 284 285 typedef enum { 286 BDRV_FIX_LEAKS = 1, 287 BDRV_FIX_ERRORS = 2, 288 } BdrvCheckMode; 289 290 int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix); 291 292 int bdrv_amend_options(BlockDriverState *bs_new, QEMUOptionParameter *options); 293 294 /* external snapshots */ 295 bool bdrv_recurse_is_first_non_filter(BlockDriverState *bs, 296 BlockDriverState *candidate); 297 bool bdrv_is_first_non_filter(BlockDriverState *candidate); 298 299 /* async block I/O */ 300 typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, 301 int sector_num); 302 BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, 303 QEMUIOVector *iov, int nb_sectors, 304 BlockDriverCompletionFunc *cb, void *opaque); 305 BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, 306 QEMUIOVector *iov, int nb_sectors, 307 BlockDriverCompletionFunc *cb, void *opaque); 308 BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, 309 BlockDriverCompletionFunc *cb, void *opaque); 310 BlockDriverAIOCB *bdrv_aio_discard(BlockDriverState *bs, 311 int64_t sector_num, int nb_sectors, 312 BlockDriverCompletionFunc *cb, void *opaque); 313 void bdrv_aio_cancel(BlockDriverAIOCB *acb); 314 315 typedef struct BlockRequest { 316 /* Fields to be filled by multiwrite caller */ 317 int64_t sector; 318 int nb_sectors; 319 int flags; 320 QEMUIOVector *qiov; 321 BlockDriverCompletionFunc *cb; 322 void *opaque; 323 324 /* Filled by multiwrite implementation */ 325 int error; 326 } BlockRequest; 327 328 int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs, 329 int num_reqs); 330 331 /* sg packet commands */ 332 int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); 333 BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, 334 unsigned long int req, void *buf, 335 BlockDriverCompletionFunc *cb, void *opaque); 336 337 /* Invalidate any cached metadata used by image formats */ 338 void bdrv_invalidate_cache(BlockDriverState *bs, Error **errp); 339 void bdrv_invalidate_cache_all(Error **errp); 340 341 void bdrv_clear_incoming_migration_all(void); 342 343 /* Ensure contents are flushed to disk. */ 344 int bdrv_flush(BlockDriverState *bs); 345 int coroutine_fn bdrv_co_flush(BlockDriverState *bs); 346 int bdrv_flush_all(void); 347 void bdrv_close_all(void); 348 void bdrv_drain_all(void); 349 350 int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 351 int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 352 int bdrv_has_zero_init_1(BlockDriverState *bs); 353 int bdrv_has_zero_init(BlockDriverState *bs); 354 bool bdrv_unallocated_blocks_are_zero(BlockDriverState *bs); 355 bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs); 356 int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num, 357 int nb_sectors, int *pnum); 358 int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, 359 int *pnum); 360 int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base, 361 int64_t sector_num, int nb_sectors, int *pnum); 362 363 void bdrv_set_on_error(BlockDriverState *bs, BlockdevOnError on_read_error, 364 BlockdevOnError on_write_error); 365 BlockdevOnError bdrv_get_on_error(BlockDriverState *bs, bool is_read); 366 BlockErrorAction bdrv_get_error_action(BlockDriverState *bs, bool is_read, int error); 367 void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action, 368 bool is_read, int error); 369 int bdrv_is_read_only(BlockDriverState *bs); 370 int bdrv_is_sg(BlockDriverState *bs); 371 int bdrv_enable_write_cache(BlockDriverState *bs); 372 void bdrv_set_enable_write_cache(BlockDriverState *bs, bool wce); 373 int bdrv_is_inserted(BlockDriverState *bs); 374 int bdrv_media_changed(BlockDriverState *bs); 375 void bdrv_lock_medium(BlockDriverState *bs, bool locked); 376 void bdrv_eject(BlockDriverState *bs, bool eject_flag); 377 const char *bdrv_get_format_name(BlockDriverState *bs); 378 BlockDriverState *bdrv_find(const char *name); 379 BlockDriverState *bdrv_find_node(const char *node_name); 380 BlockDeviceInfoList *bdrv_named_nodes_list(void); 381 BlockDriverState *bdrv_lookup_bs(const char *device, 382 const char *node_name, 383 Error **errp); 384 BlockDriverState *bdrv_next(BlockDriverState *bs); 385 void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), 386 void *opaque); 387 int bdrv_is_encrypted(BlockDriverState *bs); 388 int bdrv_key_required(BlockDriverState *bs); 389 int bdrv_set_key(BlockDriverState *bs, const char *key); 390 int bdrv_query_missing_keys(void); 391 void bdrv_iterate_format(void (*it)(void *opaque, const char *name), 392 void *opaque); 393 const char *bdrv_get_device_name(BlockDriverState *bs); 394 int bdrv_get_flags(BlockDriverState *bs); 395 int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, 396 const uint8_t *buf, int nb_sectors); 397 int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); 398 ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs); 399 void bdrv_round_to_clusters(BlockDriverState *bs, 400 int64_t sector_num, int nb_sectors, 401 int64_t *cluster_sector_num, 402 int *cluster_nb_sectors); 403 404 const char *bdrv_get_encrypted_filename(BlockDriverState *bs); 405 void bdrv_get_backing_filename(BlockDriverState *bs, 406 char *filename, int filename_size); 407 void bdrv_get_full_backing_filename(BlockDriverState *bs, 408 char *dest, size_t sz); 409 int bdrv_is_snapshot(BlockDriverState *bs); 410 411 int path_is_absolute(const char *path); 412 void path_combine(char *dest, int dest_size, 413 const char *base_path, 414 const char *filename); 415 416 int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos); 417 int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, 418 int64_t pos, int size); 419 420 int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, 421 int64_t pos, int size); 422 423 void bdrv_img_create(const char *filename, const char *fmt, 424 const char *base_filename, const char *base_fmt, 425 char *options, uint64_t img_size, int flags, 426 Error **errp, bool quiet); 427 428 /* Returns the alignment in bytes that is required so that no bounce buffer 429 * is required throughout the stack */ 430 size_t bdrv_opt_mem_align(BlockDriverState *bs); 431 void bdrv_set_guest_block_size(BlockDriverState *bs, int align); 432 void *qemu_blockalign(BlockDriverState *bs, size_t size); 433 bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov); 434 435 struct HBitmapIter; 436 typedef struct BdrvDirtyBitmap BdrvDirtyBitmap; 437 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, int granularity, 438 Error **errp); 439 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 440 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs); 441 int bdrv_get_dirty(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, int64_t sector); 442 void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 443 void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 444 void bdrv_dirty_iter_init(BlockDriverState *bs, 445 BdrvDirtyBitmap *bitmap, struct HBitmapIter *hbi); 446 int64_t bdrv_get_dirty_count(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 447 448 void bdrv_enable_copy_on_read(BlockDriverState *bs); 449 void bdrv_disable_copy_on_read(BlockDriverState *bs); 450 451 void bdrv_ref(BlockDriverState *bs); 452 void bdrv_unref(BlockDriverState *bs); 453 void bdrv_set_in_use(BlockDriverState *bs, int in_use); 454 int bdrv_in_use(BlockDriverState *bs); 455 456 #ifdef CONFIG_LINUX_AIO 457 int raw_get_aio_fd(BlockDriverState *bs); 458 #else 459 static inline int raw_get_aio_fd(BlockDriverState *bs) 460 { 461 return -ENOTSUP; 462 } 463 #endif 464 465 enum BlockAcctType { 466 BDRV_ACCT_READ, 467 BDRV_ACCT_WRITE, 468 BDRV_ACCT_FLUSH, 469 BDRV_MAX_IOTYPE, 470 }; 471 472 typedef struct BlockAcctCookie { 473 int64_t bytes; 474 int64_t start_time_ns; 475 enum BlockAcctType type; 476 } BlockAcctCookie; 477 478 void bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie, 479 int64_t bytes, enum BlockAcctType type); 480 void bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie); 481 482 typedef enum { 483 BLKDBG_L1_UPDATE, 484 485 BLKDBG_L1_GROW_ALLOC_TABLE, 486 BLKDBG_L1_GROW_WRITE_TABLE, 487 BLKDBG_L1_GROW_ACTIVATE_TABLE, 488 489 BLKDBG_L2_LOAD, 490 BLKDBG_L2_UPDATE, 491 BLKDBG_L2_UPDATE_COMPRESSED, 492 BLKDBG_L2_ALLOC_COW_READ, 493 BLKDBG_L2_ALLOC_WRITE, 494 495 BLKDBG_READ_AIO, 496 BLKDBG_READ_BACKING_AIO, 497 BLKDBG_READ_COMPRESSED, 498 499 BLKDBG_WRITE_AIO, 500 BLKDBG_WRITE_COMPRESSED, 501 502 BLKDBG_VMSTATE_LOAD, 503 BLKDBG_VMSTATE_SAVE, 504 505 BLKDBG_COW_READ, 506 BLKDBG_COW_WRITE, 507 508 BLKDBG_REFTABLE_LOAD, 509 BLKDBG_REFTABLE_GROW, 510 BLKDBG_REFTABLE_UPDATE, 511 512 BLKDBG_REFBLOCK_LOAD, 513 BLKDBG_REFBLOCK_UPDATE, 514 BLKDBG_REFBLOCK_UPDATE_PART, 515 BLKDBG_REFBLOCK_ALLOC, 516 BLKDBG_REFBLOCK_ALLOC_HOOKUP, 517 BLKDBG_REFBLOCK_ALLOC_WRITE, 518 BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS, 519 BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE, 520 BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE, 521 522 BLKDBG_CLUSTER_ALLOC, 523 BLKDBG_CLUSTER_ALLOC_BYTES, 524 BLKDBG_CLUSTER_FREE, 525 526 BLKDBG_FLUSH_TO_OS, 527 BLKDBG_FLUSH_TO_DISK, 528 529 BLKDBG_PWRITEV_RMW_HEAD, 530 BLKDBG_PWRITEV_RMW_AFTER_HEAD, 531 BLKDBG_PWRITEV_RMW_TAIL, 532 BLKDBG_PWRITEV_RMW_AFTER_TAIL, 533 BLKDBG_PWRITEV, 534 BLKDBG_PWRITEV_ZERO, 535 BLKDBG_PWRITEV_DONE, 536 537 BLKDBG_EVENT_MAX, 538 } BlkDebugEvent; 539 540 #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt) 541 void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event); 542 543 int bdrv_debug_breakpoint(BlockDriverState *bs, const char *event, 544 const char *tag); 545 int bdrv_debug_remove_breakpoint(BlockDriverState *bs, const char *tag); 546 int bdrv_debug_resume(BlockDriverState *bs, const char *tag); 547 bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag); 548 549 #endif 550