1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or https://opensource.org/licenses/CDDL-1.0.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
27 */
28
29 #ifndef _SYS_DSL_DATASET_H
30 #define _SYS_DSL_DATASET_H
31
32 #include <sys/dmu.h>
33 #include <sys/spa.h>
34 #include <sys/txg.h>
35 #include <sys/zio.h>
36 #include <sys/bplist.h>
37 #include <sys/dsl_synctask.h>
38 #include <sys/zfs_context.h>
39 #include <sys/dsl_deadlist.h>
40 #include <sys/zfs_refcount.h>
41 #include <sys/rrwlock.h>
42 #include <sys/dsl_crypt.h>
43 #include <zfeature_common.h>
44
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
48
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 const 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 *
dsl_dataset_phys(dsl_dataset_t * ds)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_clone_arg_t {
280 const char *ddca_clone;
281 const char *ddca_origin;
282 cred_t *ddca_cred;
283 } dsl_dataset_clone_arg_t;
284
285 typedef struct dsl_dataset_promote_arg {
286 const char *ddpa_clonename;
287 dsl_dataset_t *ddpa_clone;
288 list_t shared_snaps, origin_snaps, clone_snaps;
289 dsl_dataset_t *origin_origin; /* origin of the origin */
290 uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap;
291 nvlist_t *err_ds;
292 cred_t *cr;
293 } dsl_dataset_promote_arg_t;
294
295 typedef struct dsl_dataset_rollback_arg {
296 const char *ddra_fsname;
297 const char *ddra_tosnap;
298 void *ddra_owner;
299 nvlist_t *ddra_result;
300 } dsl_dataset_rollback_arg_t;
301
302 typedef struct dsl_dataset_snapshot_arg {
303 nvlist_t *ddsa_snaps;
304 nvlist_t *ddsa_props;
305 nvlist_t *ddsa_errors;
306 cred_t *ddsa_cr;
307 } dsl_dataset_snapshot_arg_t;
308
309 typedef struct dsl_dataset_rename_snapshot_arg {
310 const char *ddrsa_fsname;
311 const char *ddrsa_oldsnapname;
312 const char *ddrsa_newsnapname;
313 boolean_t ddrsa_recursive;
314 dmu_tx_t *ddrsa_tx;
315 } dsl_dataset_rename_snapshot_arg_t;
316
317 /*
318 * The max length of a temporary tag prefix is the number of hex digits
319 * required to express UINT64_MAX plus one for the hyphen.
320 */
321 #define MAX_TAG_PREFIX_LEN 17
322
323 #define dsl_dataset_is_snapshot(ds) \
324 (dsl_dataset_phys(ds)->ds_num_children != 0)
325
326 #define DS_UNIQUE_IS_ACCURATE(ds) \
327 ((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
328
329 /* flags for holding the dataset */
330 typedef enum ds_hold_flags {
331 DS_HOLD_FLAG_NONE = 0 << 0,
332 DS_HOLD_FLAG_DECRYPT = 1 << 0 /* needs access to encrypted data */
333 } ds_hold_flags_t;
334
335 int dsl_dataset_hold(struct dsl_pool *dp, const char *name, const void *tag,
336 dsl_dataset_t **dsp);
337 int dsl_dataset_hold_flags(struct dsl_pool *dp, const char *name,
338 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
339 boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds,
340 const void *tag);
341 int dsl_dataset_create_key_mapping(dsl_dataset_t *ds);
342 int dsl_dataset_hold_obj_flags(struct dsl_pool *dp, uint64_t dsobj,
343 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **);
344 void dsl_dataset_remove_key_mapping(dsl_dataset_t *ds);
345 int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj,
346 const void *tag, dsl_dataset_t **);
347 void dsl_dataset_rele_flags(dsl_dataset_t *ds, ds_hold_flags_t flags,
348 const void *tag);
349 void dsl_dataset_rele(dsl_dataset_t *ds, const void *tag);
350 int dsl_dataset_own(struct dsl_pool *dp, const char *name,
351 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
352 int dsl_dataset_own_force(struct dsl_pool *dp, const char *name,
353 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
354 int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
355 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
356 int dsl_dataset_own_obj_force(struct dsl_pool *dp, uint64_t dsobj,
357 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
358 void dsl_dataset_disown(dsl_dataset_t *ds, ds_hold_flags_t flags,
359 const void *tag);
360 void dsl_dataset_name(dsl_dataset_t *ds, char *name);
361 boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, const void *tag,
362 boolean_t override);
363 int dsl_dataset_namelen(dsl_dataset_t *ds);
364 boolean_t dsl_dataset_has_owner(dsl_dataset_t *ds);
365 uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname,
366 dsl_dataset_t *origin, uint64_t flags, cred_t *,
367 struct dsl_crypto_params *, dmu_tx_t *);
368 uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
369 struct dsl_crypto_params *dcp, uint64_t flags, dmu_tx_t *tx);
370 void dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx);
371 int dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx);
372 int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors);
373 void dsl_dataset_clone_sync(void *arg, dmu_tx_t *tx);
374 int dsl_dataset_clone_check(void *arg, dmu_tx_t *tx);
375 int dsl_dataset_clone(const char *clone, const char *origin);
376 void dsl_dataset_promote_sync(void *arg, dmu_tx_t *tx);
377 int dsl_dataset_promote_check(void *arg, dmu_tx_t *tx);
378 int dsl_dataset_promote(const char *name, char *conflsnap);
379 int dsl_dataset_rename_snapshot(const char *fsname,
380 const char *oldsnapname, const char *newsnapname, boolean_t recursive);
381 int dsl_dataset_snapshot_tmp(const char *fsname, const char *snapname,
382 minor_t cleanup_minor, const char *htag);
383
384 blkptr_t *dsl_dataset_get_blkptr(dsl_dataset_t *ds);
385
386 spa_t *dsl_dataset_get_spa(dsl_dataset_t *ds);
387
388 boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds,
389 dsl_dataset_t *snap);
390
391 void dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx);
392 void dsl_dataset_sync_done(dsl_dataset_t *ds, dmu_tx_t *tx);
393
394 void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp,
395 dmu_tx_t *tx);
396 int dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp,
397 dmu_tx_t *tx, boolean_t async);
398 void dsl_dataset_block_remapped(dsl_dataset_t *ds, uint64_t vdev,
399 uint64_t offset, uint64_t size, uint64_t birth, dmu_tx_t *tx);
400 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
401 uint64_t *value);
402
403 void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx);
404
405 int get_clones_stat_impl(dsl_dataset_t *ds, nvlist_t *val);
406 char *get_receive_resume_token(dsl_dataset_t *ds);
407 uint64_t dsl_get_refratio(dsl_dataset_t *ds);
408 uint64_t dsl_get_logicalreferenced(dsl_dataset_t *ds);
409 uint64_t dsl_get_compressratio(dsl_dataset_t *ds);
410 uint64_t dsl_get_used(dsl_dataset_t *ds);
411 uint64_t dsl_get_creation(dsl_dataset_t *ds);
412 uint64_t dsl_get_creationtxg(dsl_dataset_t *ds);
413 uint64_t dsl_get_refquota(dsl_dataset_t *ds);
414 uint64_t dsl_get_refreservation(dsl_dataset_t *ds);
415 uint64_t dsl_get_guid(dsl_dataset_t *ds);
416 uint64_t dsl_get_unique(dsl_dataset_t *ds);
417 uint64_t dsl_get_objsetid(dsl_dataset_t *ds);
418 uint64_t dsl_get_userrefs(dsl_dataset_t *ds);
419 uint64_t dsl_get_defer_destroy(dsl_dataset_t *ds);
420 uint64_t dsl_get_referenced(dsl_dataset_t *ds);
421 uint64_t dsl_get_numclones(dsl_dataset_t *ds);
422 uint64_t dsl_get_inconsistent(dsl_dataset_t *ds);
423 uint64_t dsl_get_redacted(dsl_dataset_t *ds);
424 uint64_t dsl_get_available(dsl_dataset_t *ds);
425 int dsl_get_written(dsl_dataset_t *ds, uint64_t *written);
426 int dsl_get_prev_snap(dsl_dataset_t *ds, char *snap);
427 void dsl_get_redact_snaps(dsl_dataset_t *ds, nvlist_t *propval);
428 int dsl_get_mountpoint(dsl_dataset_t *ds, const char *dsname, char *value,
429 char *source);
430
431 void get_clones_stat(dsl_dataset_t *ds, nvlist_t *nv);
432 void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv);
433
434 void dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat);
435 void dsl_dataset_space(dsl_dataset_t *ds,
436 uint64_t *refdbytesp, uint64_t *availbytesp,
437 uint64_t *usedobjsp, uint64_t *availobjsp);
438 uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
439 int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *newds,
440 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
441 int dsl_dataset_space_written_bookmark(struct zfs_bookmark_phys *bmp,
442 dsl_dataset_t *newds, uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
443 int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last,
444 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
445
446 int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf);
447
448 int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
449 uint64_t asize, uint64_t inflight, uint64_t *used,
450 uint64_t *ref_rsrv);
451 int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source,
452 uint64_t quota);
453 int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source,
454 uint64_t reservation);
455 int dsl_dataset_set_compression(const char *dsname, zprop_source_t source,
456 uint64_t compression);
457
458 boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier,
459 uint64_t earlier_txg);
460 void dsl_dataset_long_hold(dsl_dataset_t *ds, const void *tag);
461 void dsl_dataset_long_rele(dsl_dataset_t *ds, const void *tag);
462 boolean_t dsl_dataset_long_held(dsl_dataset_t *ds);
463
464 int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
465 dsl_dataset_t *origin_head, boolean_t force, void *owner, dmu_tx_t *tx);
466 void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
467 dsl_dataset_t *origin_head, dmu_tx_t *tx);
468 int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
469 dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr);
470 void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
471 dmu_tx_t *tx);
472
473 void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,
474 dmu_tx_t *tx);
475 void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
476 int dsl_dataset_get_snapname(dsl_dataset_t *ds);
477 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
478 uint64_t *value);
479 int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx,
480 boolean_t adj_cnt);
481 void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
482 zprop_source_t source, uint64_t value, dmu_tx_t *tx);
483 void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx);
484 boolean_t dsl_dataset_is_zapified(dsl_dataset_t *ds);
485 boolean_t dsl_dataset_has_resume_receive_state(dsl_dataset_t *ds);
486
487 int dsl_dataset_rollback_check(void *arg, dmu_tx_t *tx);
488 void dsl_dataset_rollback_sync(void *arg, dmu_tx_t *tx);
489 int dsl_dataset_rollback(const char *fsname, const char *tosnap, void *owner,
490 nvlist_t *result);
491
492 int dsl_dataset_rename_snapshot_check(void *arg, dmu_tx_t *tx);
493 void dsl_dataset_rename_snapshot_sync(void *arg, dmu_tx_t *tx);
494
495 uint64_t dsl_dataset_get_remap_deadlist_object(dsl_dataset_t *ds);
496 void dsl_dataset_create_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
497 boolean_t dsl_dataset_remap_deadlist_exists(dsl_dataset_t *ds);
498 void dsl_dataset_destroy_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
499
500 void dsl_dataset_activate_feature(uint64_t dsobj, spa_feature_t f, void *arg,
501 dmu_tx_t *tx);
502 void dsl_dataset_deactivate_feature(dsl_dataset_t *ds, spa_feature_t f,
503 dmu_tx_t *tx);
504 boolean_t dsl_dataset_feature_is_active(dsl_dataset_t *ds, spa_feature_t f);
505 boolean_t dsl_dataset_get_uint64_array_feature(dsl_dataset_t *ds,
506 spa_feature_t f, uint64_t *outlength, uint64_t **outp);
507
508 void dsl_dataset_activate_redaction(dsl_dataset_t *ds, uint64_t *redact_snaps,
509 uint64_t num_redact_snaps, dmu_tx_t *tx);
510
511 int dsl_dataset_oldest_snapshot(spa_t *spa, uint64_t head_ds, uint64_t min_txg,
512 uint64_t *oldest_dsobj);
513
514 #ifdef ZFS_DEBUG
515 #define dprintf_ds(ds, fmt, ...) do { \
516 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
517 char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \
518 dsl_dataset_name(ds, __ds_name); \
519 dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
520 kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \
521 } \
522 } while (0)
523 #else
524 #define dprintf_ds(dd, fmt, ...)
525 #endif
526
527 #ifdef __cplusplus
528 }
529 #endif
530
531 #endif /* _SYS_DSL_DATASET_H */
532