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_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 typedef struct dsl_dataset_rename_snapshot_arg {
306 const char *ddrsa_fsname;
307 const char *ddrsa_oldsnapname;
308 const char *ddrsa_newsnapname;
309 boolean_t ddrsa_recursive;
310 dmu_tx_t *ddrsa_tx;
311 } dsl_dataset_rename_snapshot_arg_t;
312
313 /*
314 * The max length of a temporary tag prefix is the number of hex digits
315 * required to express UINT64_MAX plus one for the hyphen.
316 */
317 #define MAX_TAG_PREFIX_LEN 17
318
319 #define dsl_dataset_is_snapshot(ds) \
320 (dsl_dataset_phys(ds)->ds_num_children != 0)
321
322 #define DS_UNIQUE_IS_ACCURATE(ds) \
323 ((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
324
325 /* flags for holding the dataset */
326 typedef enum ds_hold_flags {
327 DS_HOLD_FLAG_NONE = 0 << 0,
328 DS_HOLD_FLAG_DECRYPT = 1 << 0 /* needs access to encrypted data */
329 } ds_hold_flags_t;
330
331 int dsl_dataset_hold(struct dsl_pool *dp, const char *name, const void *tag,
332 dsl_dataset_t **dsp);
333 int dsl_dataset_hold_flags(struct dsl_pool *dp, const char *name,
334 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
335 boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds,
336 const void *tag);
337 int dsl_dataset_create_key_mapping(dsl_dataset_t *ds);
338 int dsl_dataset_hold_obj_flags(struct dsl_pool *dp, uint64_t dsobj,
339 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **);
340 void dsl_dataset_remove_key_mapping(dsl_dataset_t *ds);
341 int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj,
342 const void *tag, dsl_dataset_t **);
343 void dsl_dataset_rele_flags(dsl_dataset_t *ds, ds_hold_flags_t flags,
344 const void *tag);
345 void dsl_dataset_rele(dsl_dataset_t *ds, const void *tag);
346 int dsl_dataset_own(struct dsl_pool *dp, const char *name,
347 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
348 int dsl_dataset_own_force(struct dsl_pool *dp, const char *name,
349 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
350 int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
351 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
352 int dsl_dataset_own_obj_force(struct dsl_pool *dp, uint64_t dsobj,
353 ds_hold_flags_t flags, const void *tag, dsl_dataset_t **dsp);
354 void dsl_dataset_disown(dsl_dataset_t *ds, ds_hold_flags_t flags,
355 const void *tag);
356 void dsl_dataset_name(dsl_dataset_t *ds, char *name);
357 boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, const void *tag,
358 boolean_t override);
359 int dsl_dataset_namelen(dsl_dataset_t *ds);
360 boolean_t dsl_dataset_has_owner(dsl_dataset_t *ds);
361 uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname,
362 dsl_dataset_t *origin, uint64_t flags, cred_t *,
363 struct dsl_crypto_params *, dmu_tx_t *);
364 uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
365 struct dsl_crypto_params *dcp, uint64_t flags, dmu_tx_t *tx);
366 void dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx);
367 int dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx);
368 int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors);
369 void dsl_dataset_promote_sync(void *arg, dmu_tx_t *tx);
370 int dsl_dataset_promote_check(void *arg, dmu_tx_t *tx);
371 int dsl_dataset_promote(const char *name, char *conflsnap);
372 int dsl_dataset_rename_snapshot(const char *fsname,
373 const char *oldsnapname, const char *newsnapname, boolean_t recursive);
374 int dsl_dataset_snapshot_tmp(const char *fsname, const char *snapname,
375 minor_t cleanup_minor, const char *htag);
376
377 blkptr_t *dsl_dataset_get_blkptr(dsl_dataset_t *ds);
378
379 spa_t *dsl_dataset_get_spa(dsl_dataset_t *ds);
380
381 boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds,
382 dsl_dataset_t *snap);
383
384 void dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx);
385 void dsl_dataset_sync_done(dsl_dataset_t *ds, dmu_tx_t *tx);
386
387 void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp,
388 dmu_tx_t *tx);
389 int dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp,
390 dmu_tx_t *tx, boolean_t async);
391 void dsl_dataset_block_remapped(dsl_dataset_t *ds, uint64_t vdev,
392 uint64_t offset, uint64_t size, uint64_t birth, dmu_tx_t *tx);
393 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
394 uint64_t *value);
395
396 void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx);
397
398 int get_clones_stat_impl(dsl_dataset_t *ds, nvlist_t *val);
399 char *get_receive_resume_token(dsl_dataset_t *ds);
400 uint64_t dsl_get_refratio(dsl_dataset_t *ds);
401 uint64_t dsl_get_logicalreferenced(dsl_dataset_t *ds);
402 uint64_t dsl_get_compressratio(dsl_dataset_t *ds);
403 uint64_t dsl_get_used(dsl_dataset_t *ds);
404 uint64_t dsl_get_creation(dsl_dataset_t *ds);
405 uint64_t dsl_get_creationtxg(dsl_dataset_t *ds);
406 uint64_t dsl_get_refquota(dsl_dataset_t *ds);
407 uint64_t dsl_get_refreservation(dsl_dataset_t *ds);
408 uint64_t dsl_get_guid(dsl_dataset_t *ds);
409 uint64_t dsl_get_unique(dsl_dataset_t *ds);
410 uint64_t dsl_get_objsetid(dsl_dataset_t *ds);
411 uint64_t dsl_get_userrefs(dsl_dataset_t *ds);
412 uint64_t dsl_get_defer_destroy(dsl_dataset_t *ds);
413 uint64_t dsl_get_referenced(dsl_dataset_t *ds);
414 uint64_t dsl_get_numclones(dsl_dataset_t *ds);
415 uint64_t dsl_get_inconsistent(dsl_dataset_t *ds);
416 uint64_t dsl_get_redacted(dsl_dataset_t *ds);
417 uint64_t dsl_get_available(dsl_dataset_t *ds);
418 int dsl_get_written(dsl_dataset_t *ds, uint64_t *written);
419 int dsl_get_prev_snap(dsl_dataset_t *ds, char *snap);
420 void dsl_get_redact_snaps(dsl_dataset_t *ds, nvlist_t *propval);
421 int dsl_get_mountpoint(dsl_dataset_t *ds, const char *dsname, char *value,
422 char *source);
423
424 void get_clones_stat(dsl_dataset_t *ds, nvlist_t *nv);
425 void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv);
426
427 void dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat);
428 void dsl_dataset_space(dsl_dataset_t *ds,
429 uint64_t *refdbytesp, uint64_t *availbytesp,
430 uint64_t *usedobjsp, uint64_t *availobjsp);
431 uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
432 int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *newds,
433 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
434 int dsl_dataset_space_written_bookmark(struct zfs_bookmark_phys *bmp,
435 dsl_dataset_t *newds, uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
436 int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last,
437 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
438
439 int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf);
440
441 int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
442 uint64_t asize, uint64_t inflight, uint64_t *used,
443 uint64_t *ref_rsrv);
444 int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source,
445 uint64_t quota);
446 int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source,
447 uint64_t reservation);
448 int dsl_dataset_set_compression(const char *dsname, zprop_source_t source,
449 uint64_t compression);
450
451 boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier,
452 uint64_t earlier_txg);
453 void dsl_dataset_long_hold(dsl_dataset_t *ds, const void *tag);
454 void dsl_dataset_long_rele(dsl_dataset_t *ds, const void *tag);
455 boolean_t dsl_dataset_long_held(dsl_dataset_t *ds);
456
457 int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
458 dsl_dataset_t *origin_head, boolean_t force, void *owner, dmu_tx_t *tx);
459 void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
460 dsl_dataset_t *origin_head, dmu_tx_t *tx);
461 int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
462 dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr, proc_t *proc);
463 void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
464 dmu_tx_t *tx);
465
466 void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,
467 dmu_tx_t *tx);
468 void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
469 int dsl_dataset_get_snapname(dsl_dataset_t *ds);
470 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
471 uint64_t *value);
472 int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx,
473 boolean_t adj_cnt);
474 void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
475 zprop_source_t source, uint64_t value, dmu_tx_t *tx);
476 void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx);
477 boolean_t dsl_dataset_is_zapified(dsl_dataset_t *ds);
478 boolean_t dsl_dataset_has_resume_receive_state(dsl_dataset_t *ds);
479
480 int dsl_dataset_rollback_check(void *arg, dmu_tx_t *tx);
481 void dsl_dataset_rollback_sync(void *arg, dmu_tx_t *tx);
482 int dsl_dataset_rollback(const char *fsname, const char *tosnap, void *owner,
483 nvlist_t *result);
484
485 int dsl_dataset_rename_snapshot_check(void *arg, dmu_tx_t *tx);
486 void dsl_dataset_rename_snapshot_sync(void *arg, dmu_tx_t *tx);
487
488 uint64_t dsl_dataset_get_remap_deadlist_object(dsl_dataset_t *ds);
489 void dsl_dataset_create_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
490 boolean_t dsl_dataset_remap_deadlist_exists(dsl_dataset_t *ds);
491 void dsl_dataset_destroy_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
492
493 void dsl_dataset_activate_feature(uint64_t dsobj, spa_feature_t f, void *arg,
494 dmu_tx_t *tx);
495 void dsl_dataset_deactivate_feature(dsl_dataset_t *ds, spa_feature_t f,
496 dmu_tx_t *tx);
497 boolean_t dsl_dataset_feature_is_active(dsl_dataset_t *ds, spa_feature_t f);
498 boolean_t dsl_dataset_get_uint64_array_feature(dsl_dataset_t *ds,
499 spa_feature_t f, uint64_t *outlength, uint64_t **outp);
500
501 void dsl_dataset_activate_redaction(dsl_dataset_t *ds, uint64_t *redact_snaps,
502 uint64_t num_redact_snaps, dmu_tx_t *tx);
503
504 int dsl_dataset_oldest_snapshot(spa_t *spa, uint64_t head_ds, uint64_t min_txg,
505 uint64_t *oldest_dsobj);
506
507 #ifdef ZFS_DEBUG
508 #define dprintf_ds(ds, fmt, ...) do { \
509 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
510 char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \
511 dsl_dataset_name(ds, __ds_name); \
512 dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
513 kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \
514 } \
515 } while (0)
516 #else
517 #define dprintf_ds(dd, fmt, ...)
518 #endif
519
520 #ifdef __cplusplus
521 }
522 #endif
523
524 #endif /* _SYS_DSL_DATASET_H */
525