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 QDict *options, int flags, Error **errp); 188 int bdrv_open_backing_file(BlockDriverState *bs, QDict *options, Error **errp); 189 int bdrv_open(BlockDriverState *bs, const char *filename, QDict *options, 190 int flags, BlockDriver *drv, Error **errp); 191 BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue, 192 BlockDriverState *bs, int flags); 193 int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp); 194 int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp); 195 int bdrv_reopen_prepare(BDRVReopenState *reopen_state, 196 BlockReopenQueue *queue, Error **errp); 197 void bdrv_reopen_commit(BDRVReopenState *reopen_state); 198 void bdrv_reopen_abort(BDRVReopenState *reopen_state); 199 void bdrv_close(BlockDriverState *bs); 200 void bdrv_add_close_notifier(BlockDriverState *bs, Notifier *notify); 201 int bdrv_attach_dev(BlockDriverState *bs, void *dev); 202 void bdrv_attach_dev_nofail(BlockDriverState *bs, void *dev); 203 void bdrv_detach_dev(BlockDriverState *bs, void *dev); 204 void *bdrv_get_attached_dev(BlockDriverState *bs); 205 void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops, 206 void *opaque); 207 void bdrv_dev_eject_request(BlockDriverState *bs, bool force); 208 bool bdrv_dev_has_removable_media(BlockDriverState *bs); 209 bool bdrv_dev_is_tray_open(BlockDriverState *bs); 210 bool bdrv_dev_is_medium_locked(BlockDriverState *bs); 211 int bdrv_read(BlockDriverState *bs, int64_t sector_num, 212 uint8_t *buf, int nb_sectors); 213 int bdrv_read_unthrottled(BlockDriverState *bs, int64_t sector_num, 214 uint8_t *buf, int nb_sectors); 215 int bdrv_write(BlockDriverState *bs, int64_t sector_num, 216 const uint8_t *buf, int nb_sectors); 217 int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num, 218 int nb_sectors, BdrvRequestFlags flags); 219 BlockDriverAIOCB *bdrv_aio_write_zeroes(BlockDriverState *bs, int64_t sector_num, 220 int nb_sectors, BdrvRequestFlags flags, 221 BlockDriverCompletionFunc *cb, void *opaque); 222 int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags); 223 int bdrv_writev(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov); 224 int bdrv_pread(BlockDriverState *bs, int64_t offset, 225 void *buf, int count); 226 int bdrv_pwrite(BlockDriverState *bs, int64_t offset, 227 const void *buf, int count); 228 int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov); 229 int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset, 230 const void *buf, int count); 231 int coroutine_fn bdrv_co_readv(BlockDriverState *bs, int64_t sector_num, 232 int nb_sectors, QEMUIOVector *qiov); 233 int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs, 234 int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); 235 int coroutine_fn bdrv_co_writev(BlockDriverState *bs, int64_t sector_num, 236 int nb_sectors, QEMUIOVector *qiov); 237 /* 238 * Efficiently zero a region of the disk image. Note that this is a regular 239 * I/O request like read or write and should have a reasonable size. This 240 * function is not suitable for zeroing the entire image in a single request 241 * because it may allocate memory for the entire region. 242 */ 243 int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num, 244 int nb_sectors, BdrvRequestFlags flags); 245 BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs, 246 const char *backing_file); 247 int bdrv_get_backing_file_depth(BlockDriverState *bs); 248 int bdrv_truncate(BlockDriverState *bs, int64_t offset); 249 int64_t bdrv_getlength(BlockDriverState *bs); 250 int64_t bdrv_get_allocated_file_size(BlockDriverState *bs); 251 void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr); 252 int bdrv_commit(BlockDriverState *bs); 253 int bdrv_commit_all(void); 254 int bdrv_change_backing_file(BlockDriverState *bs, 255 const char *backing_file, const char *backing_fmt); 256 void bdrv_register(BlockDriver *bdrv); 257 int bdrv_drop_intermediate(BlockDriverState *active, BlockDriverState *top, 258 BlockDriverState *base); 259 BlockDriverState *bdrv_find_overlay(BlockDriverState *active, 260 BlockDriverState *bs); 261 BlockDriverState *bdrv_find_base(BlockDriverState *bs); 262 263 264 typedef struct BdrvCheckResult { 265 int corruptions; 266 int leaks; 267 int check_errors; 268 int corruptions_fixed; 269 int leaks_fixed; 270 int64_t image_end_offset; 271 BlockFragInfo bfi; 272 } BdrvCheckResult; 273 274 typedef enum { 275 BDRV_FIX_LEAKS = 1, 276 BDRV_FIX_ERRORS = 2, 277 } BdrvCheckMode; 278 279 int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix); 280 281 int bdrv_amend_options(BlockDriverState *bs_new, QEMUOptionParameter *options); 282 283 /* external snapshots */ 284 285 typedef enum { 286 EXT_SNAPSHOT_ALLOWED, 287 EXT_SNAPSHOT_FORBIDDEN, 288 } ExtSnapshotPerm; 289 290 /* return EXT_SNAPSHOT_ALLOWED if external snapshot is allowed 291 * return EXT_SNAPSHOT_FORBIDDEN if external snapshot is forbidden 292 */ 293 ExtSnapshotPerm bdrv_check_ext_snapshot(BlockDriverState *bs); 294 /* helper used to forbid external snapshots like in blkverify */ 295 ExtSnapshotPerm bdrv_check_ext_snapshot_forbidden(BlockDriverState *bs); 296 297 /* async block I/O */ 298 typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector, 299 int sector_num); 300 BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num, 301 QEMUIOVector *iov, int nb_sectors, 302 BlockDriverCompletionFunc *cb, void *opaque); 303 BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, 304 QEMUIOVector *iov, int nb_sectors, 305 BlockDriverCompletionFunc *cb, void *opaque); 306 BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, 307 BlockDriverCompletionFunc *cb, void *opaque); 308 BlockDriverAIOCB *bdrv_aio_discard(BlockDriverState *bs, 309 int64_t sector_num, int nb_sectors, 310 BlockDriverCompletionFunc *cb, void *opaque); 311 void bdrv_aio_cancel(BlockDriverAIOCB *acb); 312 313 typedef struct BlockRequest { 314 /* Fields to be filled by multiwrite caller */ 315 int64_t sector; 316 int nb_sectors; 317 int flags; 318 QEMUIOVector *qiov; 319 BlockDriverCompletionFunc *cb; 320 void *opaque; 321 322 /* Filled by multiwrite implementation */ 323 int error; 324 } BlockRequest; 325 326 int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs, 327 int num_reqs); 328 329 /* sg packet commands */ 330 int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf); 331 BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs, 332 unsigned long int req, void *buf, 333 BlockDriverCompletionFunc *cb, void *opaque); 334 335 /* Invalidate any cached metadata used by image formats */ 336 void bdrv_invalidate_cache(BlockDriverState *bs); 337 void bdrv_invalidate_cache_all(void); 338 339 void bdrv_clear_incoming_migration_all(void); 340 341 /* Ensure contents are flushed to disk. */ 342 int bdrv_flush(BlockDriverState *bs); 343 int coroutine_fn bdrv_co_flush(BlockDriverState *bs); 344 int bdrv_flush_all(void); 345 void bdrv_close_all(void); 346 void bdrv_drain_all(void); 347 348 int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 349 int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); 350 int bdrv_has_zero_init_1(BlockDriverState *bs); 351 int bdrv_has_zero_init(BlockDriverState *bs); 352 bool bdrv_unallocated_blocks_are_zero(BlockDriverState *bs); 353 bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs); 354 int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num, 355 int nb_sectors, int *pnum); 356 int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors, 357 int *pnum); 358 int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base, 359 int64_t sector_num, int nb_sectors, int *pnum); 360 361 void bdrv_set_on_error(BlockDriverState *bs, BlockdevOnError on_read_error, 362 BlockdevOnError on_write_error); 363 BlockdevOnError bdrv_get_on_error(BlockDriverState *bs, bool is_read); 364 BlockErrorAction bdrv_get_error_action(BlockDriverState *bs, bool is_read, int error); 365 void bdrv_error_action(BlockDriverState *bs, BlockErrorAction action, 366 bool is_read, int error); 367 int bdrv_is_read_only(BlockDriverState *bs); 368 int bdrv_is_sg(BlockDriverState *bs); 369 int bdrv_enable_write_cache(BlockDriverState *bs); 370 void bdrv_set_enable_write_cache(BlockDriverState *bs, bool wce); 371 int bdrv_is_inserted(BlockDriverState *bs); 372 int bdrv_media_changed(BlockDriverState *bs); 373 void bdrv_lock_medium(BlockDriverState *bs, bool locked); 374 void bdrv_eject(BlockDriverState *bs, bool eject_flag); 375 const char *bdrv_get_format_name(BlockDriverState *bs); 376 BlockDriverState *bdrv_find(const char *name); 377 BlockDriverState *bdrv_next(BlockDriverState *bs); 378 void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), 379 void *opaque); 380 int bdrv_is_encrypted(BlockDriverState *bs); 381 int bdrv_key_required(BlockDriverState *bs); 382 int bdrv_set_key(BlockDriverState *bs, const char *key); 383 int bdrv_query_missing_keys(void); 384 void bdrv_iterate_format(void (*it)(void *opaque, const char *name), 385 void *opaque); 386 const char *bdrv_get_device_name(BlockDriverState *bs); 387 int bdrv_get_flags(BlockDriverState *bs); 388 int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num, 389 const uint8_t *buf, int nb_sectors); 390 int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi); 391 ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs); 392 void bdrv_round_to_clusters(BlockDriverState *bs, 393 int64_t sector_num, int nb_sectors, 394 int64_t *cluster_sector_num, 395 int *cluster_nb_sectors); 396 397 const char *bdrv_get_encrypted_filename(BlockDriverState *bs); 398 void bdrv_get_backing_filename(BlockDriverState *bs, 399 char *filename, int filename_size); 400 void bdrv_get_full_backing_filename(BlockDriverState *bs, 401 char *dest, size_t sz); 402 int bdrv_is_snapshot(BlockDriverState *bs); 403 404 int path_is_absolute(const char *path); 405 void path_combine(char *dest, int dest_size, 406 const char *base_path, 407 const char *filename); 408 409 int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos); 410 int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf, 411 int64_t pos, int size); 412 413 int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, 414 int64_t pos, int size); 415 416 void bdrv_img_create(const char *filename, const char *fmt, 417 const char *base_filename, const char *base_fmt, 418 char *options, uint64_t img_size, int flags, 419 Error **errp, bool quiet); 420 421 void bdrv_set_buffer_alignment(BlockDriverState *bs, int align); 422 void *qemu_blockalign(BlockDriverState *bs, size_t size); 423 bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov); 424 425 struct HBitmapIter; 426 typedef struct BdrvDirtyBitmap BdrvDirtyBitmap; 427 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, int granularity); 428 void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 429 BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs); 430 int bdrv_get_dirty(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, int64_t sector); 431 void bdrv_set_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 432 void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 433 void bdrv_dirty_iter_init(BlockDriverState *bs, 434 BdrvDirtyBitmap *bitmap, struct HBitmapIter *hbi); 435 int64_t bdrv_get_dirty_count(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 436 437 void bdrv_enable_copy_on_read(BlockDriverState *bs); 438 void bdrv_disable_copy_on_read(BlockDriverState *bs); 439 440 void bdrv_ref(BlockDriverState *bs); 441 void bdrv_unref(BlockDriverState *bs); 442 void bdrv_set_in_use(BlockDriverState *bs, int in_use); 443 int bdrv_in_use(BlockDriverState *bs); 444 445 #ifdef CONFIG_LINUX_AIO 446 int raw_get_aio_fd(BlockDriverState *bs); 447 #else 448 static inline int raw_get_aio_fd(BlockDriverState *bs) 449 { 450 return -ENOTSUP; 451 } 452 #endif 453 454 enum BlockAcctType { 455 BDRV_ACCT_READ, 456 BDRV_ACCT_WRITE, 457 BDRV_ACCT_FLUSH, 458 BDRV_MAX_IOTYPE, 459 }; 460 461 typedef struct BlockAcctCookie { 462 int64_t bytes; 463 int64_t start_time_ns; 464 enum BlockAcctType type; 465 } BlockAcctCookie; 466 467 void bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie, 468 int64_t bytes, enum BlockAcctType type); 469 void bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie); 470 471 typedef enum { 472 BLKDBG_L1_UPDATE, 473 474 BLKDBG_L1_GROW_ALLOC_TABLE, 475 BLKDBG_L1_GROW_WRITE_TABLE, 476 BLKDBG_L1_GROW_ACTIVATE_TABLE, 477 478 BLKDBG_L2_LOAD, 479 BLKDBG_L2_UPDATE, 480 BLKDBG_L2_UPDATE_COMPRESSED, 481 BLKDBG_L2_ALLOC_COW_READ, 482 BLKDBG_L2_ALLOC_WRITE, 483 484 BLKDBG_READ_AIO, 485 BLKDBG_READ_BACKING_AIO, 486 BLKDBG_READ_COMPRESSED, 487 488 BLKDBG_WRITE_AIO, 489 BLKDBG_WRITE_COMPRESSED, 490 491 BLKDBG_VMSTATE_LOAD, 492 BLKDBG_VMSTATE_SAVE, 493 494 BLKDBG_COW_READ, 495 BLKDBG_COW_WRITE, 496 497 BLKDBG_REFTABLE_LOAD, 498 BLKDBG_REFTABLE_GROW, 499 BLKDBG_REFTABLE_UPDATE, 500 501 BLKDBG_REFBLOCK_LOAD, 502 BLKDBG_REFBLOCK_UPDATE, 503 BLKDBG_REFBLOCK_UPDATE_PART, 504 BLKDBG_REFBLOCK_ALLOC, 505 BLKDBG_REFBLOCK_ALLOC_HOOKUP, 506 BLKDBG_REFBLOCK_ALLOC_WRITE, 507 BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS, 508 BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE, 509 BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE, 510 511 BLKDBG_CLUSTER_ALLOC, 512 BLKDBG_CLUSTER_ALLOC_BYTES, 513 BLKDBG_CLUSTER_FREE, 514 515 BLKDBG_FLUSH_TO_OS, 516 BLKDBG_FLUSH_TO_DISK, 517 518 BLKDBG_EVENT_MAX, 519 } BlkDebugEvent; 520 521 #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt) 522 void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event); 523 524 int bdrv_debug_breakpoint(BlockDriverState *bs, const char *event, 525 const char *tag); 526 int bdrv_debug_remove_breakpoint(BlockDriverState *bs, const char *tag); 527 int bdrv_debug_resume(BlockDriverState *bs, const char *tag); 528 bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag); 529 530 #endif 531