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