1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2011, 2018 by Delphix. All rights reserved. 24 * Copyright (c) 2013 Steven Hartland. All rights reserved. 25 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 26 */ 27 28 #ifndef _SYS_DSL_DATASET_H 29 #define _SYS_DSL_DATASET_H 30 31 #include <sys/dmu.h> 32 #include <sys/spa.h> 33 #include <sys/txg.h> 34 #include <sys/zio.h> 35 #include <sys/bplist.h> 36 #include <sys/dsl_synctask.h> 37 #include <sys/zfs_context.h> 38 #include <sys/dsl_deadlist.h> 39 #include <sys/zfs_refcount.h> 40 #include <sys/rrwlock.h> 41 #include <sys/dsl_crypt.h> 42 #include <zfeature_common.h> 43 44 #ifdef __cplusplus 45 extern "C" { 46 #endif 47 48 extern int zfs_allow_redacted_dataset_mount; 49 struct dsl_dataset; 50 struct dsl_dir; 51 struct dsl_pool; 52 struct dsl_crypto_params; 53 struct dsl_key_mapping; 54 struct zfs_bookmark_phys; 55 56 #define DS_FLAG_INCONSISTENT (1ULL<<0) 57 #define DS_IS_INCONSISTENT(ds) \ 58 (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_INCONSISTENT) 59 60 /* 61 * Do not allow this dataset to be promoted. 62 */ 63 #define DS_FLAG_NOPROMOTE (1ULL<<1) 64 65 /* 66 * DS_FLAG_UNIQUE_ACCURATE is set if ds_unique_bytes has been correctly 67 * calculated for head datasets (starting with SPA_VERSION_UNIQUE_ACCURATE, 68 * refquota/refreservations). 69 */ 70 #define DS_FLAG_UNIQUE_ACCURATE (1ULL<<2) 71 72 /* 73 * DS_FLAG_DEFER_DESTROY is set after 'zfs destroy -d' has been called 74 * on a dataset. This allows the dataset to be destroyed using 'zfs release'. 75 */ 76 #define DS_FLAG_DEFER_DESTROY (1ULL<<3) 77 #define DS_IS_DEFER_DESTROY(ds) \ 78 (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_DEFER_DESTROY) 79 80 /* 81 * DS_FIELD_* are strings that are used in the "extensified" dataset zap object. 82 * They should be of the format <reverse-dns>:<field>. 83 */ 84 85 /* 86 * This field's value is the object ID of a zap object which contains the 87 * bookmarks of this dataset. If it is present, then this dataset is counted 88 * in the refcount of the SPA_FEATURES_BOOKMARKS feature. 89 */ 90 #define DS_FIELD_BOOKMARK_NAMES "com.delphix:bookmarks" 91 92 /* 93 * This field is present (with value=0) if this dataset may contain large 94 * dnodes (>512B). If it is present, then this dataset is counted in the 95 * refcount of the SPA_FEATURE_LARGE_DNODE feature. 96 */ 97 #define DS_FIELD_LARGE_DNODE "org.zfsonlinux:large_dnode" 98 99 /* 100 * These fields are set on datasets that are in the middle of a resumable 101 * receive, and allow the sender to resume the send if it is interrupted. 102 */ 103 #define DS_FIELD_RESUME_FROMGUID "com.delphix:resume_fromguid" 104 #define DS_FIELD_RESUME_TONAME "com.delphix:resume_toname" 105 #define DS_FIELD_RESUME_TOGUID "com.delphix:resume_toguid" 106 #define DS_FIELD_RESUME_OBJECT "com.delphix:resume_object" 107 #define DS_FIELD_RESUME_OFFSET "com.delphix:resume_offset" 108 #define DS_FIELD_RESUME_BYTES "com.delphix:resume_bytes" 109 #define DS_FIELD_RESUME_LARGEBLOCK "com.delphix:resume_largeblockok" 110 #define DS_FIELD_RESUME_EMBEDOK "com.delphix:resume_embedok" 111 #define DS_FIELD_RESUME_COMPRESSOK "com.delphix:resume_compressok" 112 #define DS_FIELD_RESUME_RAWOK "com.datto:resume_rawok" 113 114 /* 115 * This field is set to the object number of the remap deadlist if one exists. 116 */ 117 #define DS_FIELD_REMAP_DEADLIST "com.delphix:remap_deadlist" 118 119 /* 120 * We were receiving an incremental from a redaction bookmark, and these are the 121 * guids of its snapshots. 122 */ 123 #define DS_FIELD_RESUME_REDACT_BOOKMARK_SNAPS \ 124 "com.delphix:resume_redact_book_snaps" 125 126 /* 127 * This field is set to the ivset guid for encrypted snapshots. This is used 128 * for validating raw receives. 129 */ 130 #define DS_FIELD_IVSET_GUID "com.datto:ivset_guid" 131 132 /* 133 * DS_FLAG_CI_DATASET is set if the dataset contains a file system whose 134 * name lookups should be performed case-insensitively. 135 */ 136 #define DS_FLAG_CI_DATASET (1ULL<<16) 137 138 #define DS_CREATE_FLAG_NODIRTY (1ULL<<24) 139 140 typedef struct dsl_dataset_phys { 141 uint64_t ds_dir_obj; /* DMU_OT_DSL_DIR */ 142 uint64_t ds_prev_snap_obj; /* DMU_OT_DSL_DATASET */ 143 uint64_t ds_prev_snap_txg; 144 uint64_t ds_next_snap_obj; /* DMU_OT_DSL_DATASET */ 145 uint64_t ds_snapnames_zapobj; /* DMU_OT_DSL_DS_SNAP_MAP 0 for snaps */ 146 uint64_t ds_num_children; /* clone/snap children; ==0 for head */ 147 uint64_t ds_creation_time; /* seconds since 1970 */ 148 uint64_t ds_creation_txg; 149 uint64_t ds_deadlist_obj; /* DMU_OT_DEADLIST */ 150 /* 151 * ds_referenced_bytes, ds_compressed_bytes, and ds_uncompressed_bytes 152 * include all blocks referenced by this dataset, including those 153 * shared with any other datasets. 154 */ 155 uint64_t ds_referenced_bytes; 156 uint64_t ds_compressed_bytes; 157 uint64_t ds_uncompressed_bytes; 158 uint64_t ds_unique_bytes; /* only relevant to snapshots */ 159 /* 160 * The ds_fsid_guid is a 56-bit ID that can change to avoid 161 * collisions. The ds_guid is a 64-bit ID that will never 162 * change, so there is a small probability that it will collide. 163 */ 164 uint64_t ds_fsid_guid; 165 uint64_t ds_guid; 166 uint64_t ds_flags; /* DS_FLAG_* */ 167 blkptr_t ds_bp; 168 uint64_t ds_next_clones_obj; /* DMU_OT_DSL_CLONES */ 169 uint64_t ds_props_obj; /* DMU_OT_DSL_PROPS for snaps */ 170 uint64_t ds_userrefs_obj; /* DMU_OT_USERREFS */ 171 uint64_t ds_pad[5]; /* pad out to 320 bytes for good measure */ 172 } dsl_dataset_phys_t; 173 174 typedef struct dsl_dataset { 175 dmu_buf_user_t ds_dbu; 176 rrwlock_t ds_bp_rwlock; /* Protects ds_phys->ds_bp */ 177 178 /* Immutable: */ 179 struct dsl_dir *ds_dir; 180 dmu_buf_t *ds_dbuf; 181 uint64_t ds_object; 182 uint64_t ds_fsid_guid; 183 boolean_t ds_is_snapshot; 184 struct dsl_key_mapping *ds_key_mapping; 185 186 /* only used in syncing context, only valid for non-snapshots: */ 187 struct dsl_dataset *ds_prev; 188 uint64_t ds_bookmarks_obj; /* DMU_OTN_ZAP_METADATA */ 189 avl_tree_t ds_bookmarks; /* dsl_bookmark_node_t */ 190 191 /* has internal locking: */ 192 dsl_deadlist_t ds_deadlist; 193 bplist_t ds_pending_deadlist; 194 195 /* 196 * The remap deadlist contains blocks (DVA's, really) that are 197 * referenced by the previous snapshot and point to indirect vdevs, 198 * but in this dataset they have been remapped to point to concrete 199 * (or at least, less-indirect) vdevs. In other words, the 200 * physical DVA is referenced by the previous snapshot but not by 201 * this dataset. Logically, the DVA continues to be referenced, 202 * but we are using a different (less indirect) physical DVA. 203 * This deadlist is used to determine when physical DVAs that 204 * point to indirect vdevs are no longer referenced anywhere, 205 * and thus should be marked obsolete. 206 * 207 * This is only used if SPA_FEATURE_OBSOLETE_COUNTS is enabled. 208 */ 209 dsl_deadlist_t ds_remap_deadlist; 210 /* protects creation of the ds_remap_deadlist */ 211 kmutex_t ds_remap_deadlist_lock; 212 213 /* protected by lock on pool's dp_dirty_datasets list */ 214 txg_node_t ds_dirty_link; 215 list_node_t ds_synced_link; 216 217 /* 218 * ds_phys->ds_<accounting> is also protected by ds_lock. 219 * Protected by ds_lock: 220 */ 221 kmutex_t ds_lock; 222 objset_t *ds_objset; 223 uint64_t ds_userrefs; 224 void *ds_owner; 225 226 /* 227 * Long holds prevent the ds from being destroyed; they allow the 228 * ds to remain held even after dropping the dp_config_rwlock. 229 * Owning counts as a long hold. See the comments above 230 * dsl_pool_hold() for details. 231 */ 232 zfs_refcount_t ds_longholds; 233 234 /* no locking; only for making guesses */ 235 uint64_t ds_trysnap_txg; 236 237 /* for objset_open() */ 238 kmutex_t ds_opening_lock; 239 240 uint64_t ds_reserved; /* cached refreservation */ 241 uint64_t ds_quota; /* cached refquota */ 242 243 kmutex_t ds_sendstream_lock; 244 list_t ds_sendstreams; 245 246 /* 247 * When in the middle of a resumable receive, tracks how much 248 * progress we have made. 249 */ 250 uint64_t ds_resume_object[TXG_SIZE]; 251 uint64_t ds_resume_offset[TXG_SIZE]; 252 uint64_t ds_resume_bytes[TXG_SIZE]; 253 254 /* Protected by our dsl_dir's dd_lock */ 255 list_t ds_prop_cbs; 256 257 /* 258 * For ZFEATURE_FLAG_PER_DATASET features, set if this dataset 259 * uses this feature. 260 */ 261 void *ds_feature[SPA_FEATURES]; 262 263 /* 264 * Set if we need to activate the feature on this dataset this txg 265 * (used only in syncing context). 266 */ 267 void *ds_feature_activation[SPA_FEATURES]; 268 269 /* Protected by ds_lock; keep at end of struct for better locality */ 270 char ds_snapname[ZFS_MAX_DATASET_NAME_LEN]; 271 } dsl_dataset_t; 272 273 static inline dsl_dataset_phys_t * 274 dsl_dataset_phys(dsl_dataset_t *ds) 275 { 276 return ((dsl_dataset_phys_t *)ds->ds_dbuf->db_data); 277 } 278 279 typedef struct dsl_dataset_promote_arg { 280 const char *ddpa_clonename; 281 dsl_dataset_t *ddpa_clone; 282 list_t shared_snaps, origin_snaps, clone_snaps; 283 dsl_dataset_t *origin_origin; /* origin of the origin */ 284 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap; 285 nvlist_t *err_ds; 286 cred_t *cr; 287 proc_t *proc; 288 } dsl_dataset_promote_arg_t; 289 290 typedef struct dsl_dataset_rollback_arg { 291 const char *ddra_fsname; 292 const char *ddra_tosnap; 293 void *ddra_owner; 294 nvlist_t *ddra_result; 295 } dsl_dataset_rollback_arg_t; 296 297 typedef struct dsl_dataset_snapshot_arg { 298 nvlist_t *ddsa_snaps; 299 nvlist_t *ddsa_props; 300 nvlist_t *ddsa_errors; 301 cred_t *ddsa_cr; 302 proc_t *ddsa_proc; 303 } dsl_dataset_snapshot_arg_t; 304 305 /* 306 * The max length of a temporary tag prefix is the number of hex digits 307 * required to express UINT64_MAX plus one for the hyphen. 308 */ 309 #define MAX_TAG_PREFIX_LEN 17 310 311 #define dsl_dataset_is_snapshot(ds) \ 312 (dsl_dataset_phys(ds)->ds_num_children != 0) 313 314 #define DS_UNIQUE_IS_ACCURATE(ds) \ 315 ((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0) 316 317 /* flags for holding the dataset */ 318 typedef enum ds_hold_flags { 319 DS_HOLD_FLAG_NONE = 0 << 0, 320 DS_HOLD_FLAG_DECRYPT = 1 << 0 /* needs access to encrypted data */ 321 } ds_hold_flags_t; 322 323 int dsl_dataset_hold(struct dsl_pool *dp, const char *name, void *tag, 324 dsl_dataset_t **dsp); 325 int dsl_dataset_hold_flags(struct dsl_pool *dp, const char *name, 326 ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp); 327 boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds, 328 void *tag); 329 int dsl_dataset_create_key_mapping(dsl_dataset_t *ds); 330 int dsl_dataset_hold_obj_flags(struct dsl_pool *dp, uint64_t dsobj, 331 ds_hold_flags_t flags, void *tag, dsl_dataset_t **); 332 void dsl_dataset_remove_key_mapping(dsl_dataset_t *ds); 333 int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj, 334 void *tag, dsl_dataset_t **); 335 void dsl_dataset_rele_flags(dsl_dataset_t *ds, ds_hold_flags_t flags, 336 void *tag); 337 void dsl_dataset_rele(dsl_dataset_t *ds, void *tag); 338 int dsl_dataset_own(struct dsl_pool *dp, const char *name, 339 ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp); 340 int dsl_dataset_own_force(struct dsl_pool *dp, const char *name, 341 ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp); 342 int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj, 343 ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp); 344 int dsl_dataset_own_obj_force(struct dsl_pool *dp, uint64_t dsobj, 345 ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp); 346 void dsl_dataset_disown(dsl_dataset_t *ds, ds_hold_flags_t flags, void *tag); 347 void dsl_dataset_name(dsl_dataset_t *ds, char *name); 348 boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, void *tag, boolean_t override); 349 int dsl_dataset_namelen(dsl_dataset_t *ds); 350 boolean_t dsl_dataset_has_owner(dsl_dataset_t *ds); 351 uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname, 352 dsl_dataset_t *origin, uint64_t flags, cred_t *, 353 struct dsl_crypto_params *, dmu_tx_t *); 354 uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin, 355 struct dsl_crypto_params *dcp, uint64_t flags, dmu_tx_t *tx); 356 void dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx); 357 int dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx); 358 int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors); 359 void dsl_dataset_promote_sync(void *arg, dmu_tx_t *tx); 360 int dsl_dataset_promote_check(void *arg, dmu_tx_t *tx); 361 int dsl_dataset_promote(const char *name, char *conflsnap); 362 int dsl_dataset_rename_snapshot(const char *fsname, 363 const char *oldsnapname, const char *newsnapname, boolean_t recursive); 364 int dsl_dataset_snapshot_tmp(const char *fsname, const char *snapname, 365 minor_t cleanup_minor, const char *htag); 366 367 blkptr_t *dsl_dataset_get_blkptr(dsl_dataset_t *ds); 368 369 spa_t *dsl_dataset_get_spa(dsl_dataset_t *ds); 370 371 boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds, 372 dsl_dataset_t *snap); 373 374 void dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx); 375 void dsl_dataset_sync_done(dsl_dataset_t *ds, dmu_tx_t *tx); 376 377 void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp, 378 dmu_tx_t *tx); 379 int dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp, 380 dmu_tx_t *tx, boolean_t async); 381 void dsl_dataset_block_remapped(dsl_dataset_t *ds, uint64_t vdev, 382 uint64_t offset, uint64_t size, uint64_t birth, dmu_tx_t *tx); 383 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, 384 uint64_t *value); 385 386 void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx); 387 388 int get_clones_stat_impl(dsl_dataset_t *ds, nvlist_t *val); 389 char *get_receive_resume_stats_impl(dsl_dataset_t *ds); 390 char *get_child_receive_stats(dsl_dataset_t *ds); 391 uint64_t dsl_get_refratio(dsl_dataset_t *ds); 392 uint64_t dsl_get_logicalreferenced(dsl_dataset_t *ds); 393 uint64_t dsl_get_compressratio(dsl_dataset_t *ds); 394 uint64_t dsl_get_used(dsl_dataset_t *ds); 395 uint64_t dsl_get_creation(dsl_dataset_t *ds); 396 uint64_t dsl_get_creationtxg(dsl_dataset_t *ds); 397 uint64_t dsl_get_refquota(dsl_dataset_t *ds); 398 uint64_t dsl_get_refreservation(dsl_dataset_t *ds); 399 uint64_t dsl_get_guid(dsl_dataset_t *ds); 400 uint64_t dsl_get_unique(dsl_dataset_t *ds); 401 uint64_t dsl_get_objsetid(dsl_dataset_t *ds); 402 uint64_t dsl_get_userrefs(dsl_dataset_t *ds); 403 uint64_t dsl_get_defer_destroy(dsl_dataset_t *ds); 404 uint64_t dsl_get_referenced(dsl_dataset_t *ds); 405 uint64_t dsl_get_numclones(dsl_dataset_t *ds); 406 uint64_t dsl_get_inconsistent(dsl_dataset_t *ds); 407 uint64_t dsl_get_redacted(dsl_dataset_t *ds); 408 uint64_t dsl_get_available(dsl_dataset_t *ds); 409 int dsl_get_written(dsl_dataset_t *ds, uint64_t *written); 410 int dsl_get_prev_snap(dsl_dataset_t *ds, char *snap); 411 void dsl_get_redact_snaps(dsl_dataset_t *ds, nvlist_t *propval); 412 int dsl_get_mountpoint(dsl_dataset_t *ds, const char *dsname, char *value, 413 char *source); 414 415 void get_clones_stat(dsl_dataset_t *ds, nvlist_t *nv); 416 void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv); 417 418 void dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat); 419 void dsl_dataset_space(dsl_dataset_t *ds, 420 uint64_t *refdbytesp, uint64_t *availbytesp, 421 uint64_t *usedobjsp, uint64_t *availobjsp); 422 uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds); 423 int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *newds, 424 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 425 int dsl_dataset_space_written_bookmark(struct zfs_bookmark_phys *bmp, 426 dsl_dataset_t *newds, uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 427 int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last, 428 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 429 430 int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf); 431 432 int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota, 433 uint64_t asize, uint64_t inflight, uint64_t *used, 434 uint64_t *ref_rsrv); 435 int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source, 436 uint64_t quota); 437 int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source, 438 uint64_t reservation); 439 int dsl_dataset_set_compression(const char *dsname, zprop_source_t source, 440 uint64_t compression); 441 442 boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier, 443 uint64_t earlier_txg); 444 void dsl_dataset_long_hold(dsl_dataset_t *ds, void *tag); 445 void dsl_dataset_long_rele(dsl_dataset_t *ds, void *tag); 446 boolean_t dsl_dataset_long_held(dsl_dataset_t *ds); 447 448 int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone, 449 dsl_dataset_t *origin_head, boolean_t force, void *owner, dmu_tx_t *tx); 450 void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone, 451 dsl_dataset_t *origin_head, dmu_tx_t *tx); 452 int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname, 453 dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr, proc_t *proc); 454 void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname, 455 dmu_tx_t *tx); 456 457 void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj, 458 dmu_tx_t *tx); 459 void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds); 460 int dsl_dataset_get_snapname(dsl_dataset_t *ds); 461 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name, 462 uint64_t *value); 463 int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx, 464 boolean_t adj_cnt); 465 void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds, 466 zprop_source_t source, uint64_t value, dmu_tx_t *tx); 467 void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx); 468 boolean_t dsl_dataset_is_zapified(dsl_dataset_t *ds); 469 boolean_t dsl_dataset_has_resume_receive_state(dsl_dataset_t *ds); 470 471 int dsl_dataset_rollback_check(void *arg, dmu_tx_t *tx); 472 void dsl_dataset_rollback_sync(void *arg, dmu_tx_t *tx); 473 int dsl_dataset_rollback(const char *fsname, const char *tosnap, void *owner, 474 nvlist_t *result); 475 476 uint64_t dsl_dataset_get_remap_deadlist_object(dsl_dataset_t *ds); 477 void dsl_dataset_create_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx); 478 boolean_t dsl_dataset_remap_deadlist_exists(dsl_dataset_t *ds); 479 void dsl_dataset_destroy_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx); 480 481 void dsl_dataset_activate_feature(uint64_t dsobj, spa_feature_t f, void *arg, 482 dmu_tx_t *tx); 483 void dsl_dataset_deactivate_feature(dsl_dataset_t *ds, spa_feature_t f, 484 dmu_tx_t *tx); 485 boolean_t dsl_dataset_feature_is_active(dsl_dataset_t *ds, spa_feature_t f); 486 boolean_t dsl_dataset_get_uint64_array_feature(dsl_dataset_t *ds, 487 spa_feature_t f, uint64_t *outlength, uint64_t **outp); 488 489 void dsl_dataset_activate_redaction(dsl_dataset_t *ds, uint64_t *redact_snaps, 490 uint64_t num_redact_snaps, dmu_tx_t *tx); 491 492 #ifdef ZFS_DEBUG 493 #define dprintf_ds(ds, fmt, ...) do { \ 494 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 495 char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \ 496 dsl_dataset_name(ds, __ds_name); \ 497 dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \ 498 kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \ 499 } \ 500 } while (0) 501 #else 502 #define dprintf_ds(dd, fmt, ...) 503 #endif 504 505 #ifdef __cplusplus 506 } 507 #endif 508 509 #endif /* _SYS_DSL_DATASET_H */ 510