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, 2017 by Delphix. All rights reserved.
24 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
27 * Copyright (c) 2014 Integros [integros.com]
28 */
29
30#ifndef	_SYS_DSL_DATASET_H
31#define	_SYS_DSL_DATASET_H
32
33#include <sys/dmu.h>
34#include <sys/spa.h>
35#include <sys/txg.h>
36#include <sys/zio.h>
37#include <sys/bplist.h>
38#include <sys/dsl_synctask.h>
39#include <sys/zfs_context.h>
40#include <sys/dsl_deadlist.h>
41#include <sys/refcount.h>
42#include <sys/rrwlock.h>
43#include <sys/dsl_crypt.h>
44#include <zfeature_common.h>
45
46#ifdef	__cplusplus
47extern "C" {
48#endif
49
50struct dsl_dataset;
51struct dsl_dir;
52struct dsl_pool;
53struct dsl_crypto_params;
54struct dsl_key_mapping;
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 * This field is set to the ivset guid for encrypted snapshots. This is used
121 * for validating raw receives.
122 */
123#define	DS_FIELD_IVSET_GUID	"com.datto:ivset_guid"
124
125/*
126 * DS_FLAG_CI_DATASET is set if the dataset contains a file system whose
127 * name lookups should be performed case-insensitively.
128 */
129#define	DS_FLAG_CI_DATASET	(1ULL<<16)
130
131#define	DS_CREATE_FLAG_NODIRTY	(1ULL<<24)
132
133typedef struct dsl_dataset_phys {
134	uint64_t ds_dir_obj;		/* DMU_OT_DSL_DIR */
135	uint64_t ds_prev_snap_obj;	/* DMU_OT_DSL_DATASET */
136	uint64_t ds_prev_snap_txg;
137	uint64_t ds_next_snap_obj;	/* DMU_OT_DSL_DATASET */
138	uint64_t ds_snapnames_zapobj;	/* DMU_OT_DSL_DS_SNAP_MAP 0 for snaps */
139	uint64_t ds_num_children;	/* clone/snap children; ==0 for head */
140	uint64_t ds_creation_time;	/* seconds since 1970 */
141	uint64_t ds_creation_txg;
142	uint64_t ds_deadlist_obj;	/* DMU_OT_DEADLIST */
143	/*
144	 * ds_referenced_bytes, ds_compressed_bytes, and ds_uncompressed_bytes
145	 * include all blocks referenced by this dataset, including those
146	 * shared with any other datasets.
147	 */
148	uint64_t ds_referenced_bytes;
149	uint64_t ds_compressed_bytes;
150	uint64_t ds_uncompressed_bytes;
151	uint64_t ds_unique_bytes;	/* only relevant to snapshots */
152	/*
153	 * The ds_fsid_guid is a 56-bit ID that can change to avoid
154	 * collisions.  The ds_guid is a 64-bit ID that will never
155	 * change, so there is a small probability that it will collide.
156	 */
157	uint64_t ds_fsid_guid;
158	uint64_t ds_guid;
159	uint64_t ds_flags;		/* DS_FLAG_* */
160	blkptr_t ds_bp;
161	uint64_t ds_next_clones_obj;	/* DMU_OT_DSL_CLONES */
162	uint64_t ds_props_obj;		/* DMU_OT_DSL_PROPS for snaps */
163	uint64_t ds_userrefs_obj;	/* DMU_OT_USERREFS */
164	uint64_t ds_pad[5]; /* pad out to 320 bytes for good measure */
165} dsl_dataset_phys_t;
166
167typedef struct dsl_dataset {
168	dmu_buf_user_t ds_dbu;
169	rrwlock_t ds_bp_rwlock; /* Protects ds_phys->ds_bp */
170
171	/* Immutable: */
172	struct dsl_dir *ds_dir;
173	dmu_buf_t *ds_dbuf;
174	uint64_t ds_object;
175	uint64_t ds_fsid_guid;
176	boolean_t ds_is_snapshot;
177	struct dsl_key_mapping *ds_key_mapping;
178
179	/* only used in syncing context, only valid for non-snapshots: */
180	struct dsl_dataset *ds_prev;
181	uint64_t ds_bookmarks;  /* DMU_OTN_ZAP_METADATA */
182
183	/* has internal locking: */
184	dsl_deadlist_t ds_deadlist;
185	bplist_t ds_pending_deadlist;
186
187	/*
188	 * The remap deadlist contains blocks (DVA's, really) that are
189	 * referenced by the previous snapshot and point to indirect vdevs,
190	 * but in this dataset they have been remapped to point to concrete
191	 * (or at least, less-indirect) vdevs.  In other words, the
192	 * physical DVA is referenced by the previous snapshot but not by
193	 * this dataset.  Logically, the DVA continues to be referenced,
194	 * but we are using a different (less indirect) physical DVA.
195	 * This deadlist is used to determine when physical DVAs that
196	 * point to indirect vdevs are no longer referenced anywhere,
197	 * and thus should be marked obsolete.
198	 *
199	 * This is only used if SPA_FEATURE_OBSOLETE_COUNTS is enabled.
200	 */
201	dsl_deadlist_t ds_remap_deadlist;
202	/* protects creation of the ds_remap_deadlist */
203	kmutex_t ds_remap_deadlist_lock;
204
205	/* protected by lock on pool's dp_dirty_datasets list */
206	txg_node_t ds_dirty_link;
207	list_node_t ds_synced_link;
208
209	/*
210	 * ds_phys->ds_<accounting> is also protected by ds_lock.
211	 * Protected by ds_lock:
212	 */
213	kmutex_t ds_lock;
214	objset_t *ds_objset;
215	uint64_t ds_userrefs;
216	void *ds_owner;
217
218	/*
219	 * Long holds prevent the ds from being destroyed; they allow the
220	 * ds to remain held even after dropping the dp_config_rwlock.
221	 * Owning counts as a long hold.  See the comments above
222	 * dsl_pool_hold() for details.
223	 */
224	zfs_refcount_t ds_longholds;
225
226	/* no locking; only for making guesses */
227	uint64_t ds_trysnap_txg;
228
229	/* for objset_open() */
230	kmutex_t ds_opening_lock;
231
232	uint64_t ds_reserved;	/* cached refreservation */
233	uint64_t ds_quota;	/* cached refquota */
234
235	kmutex_t ds_sendstream_lock;
236	list_t ds_sendstreams;
237
238	/*
239	 * When in the middle of a resumable receive, tracks how much
240	 * progress we have made.
241	 */
242	uint64_t ds_resume_object[TXG_SIZE];
243	uint64_t ds_resume_offset[TXG_SIZE];
244	uint64_t ds_resume_bytes[TXG_SIZE];
245
246	/* Protected by our dsl_dir's dd_lock */
247	list_t ds_prop_cbs;
248
249	/*
250	 * For ZFEATURE_FLAG_PER_DATASET features, set if this dataset
251	 * uses this feature.
252	 */
253	uint8_t ds_feature_inuse[SPA_FEATURES];
254
255	/*
256	 * Set if we need to activate the feature on this dataset this txg
257	 * (used only in syncing context).
258	 */
259	uint8_t ds_feature_activation_needed[SPA_FEATURES];
260
261	/* Protected by ds_lock; keep at end of struct for better locality */
262	char ds_snapname[ZFS_MAX_DATASET_NAME_LEN];
263} dsl_dataset_t;
264
265inline dsl_dataset_phys_t *
266dsl_dataset_phys(dsl_dataset_t *ds)
267{
268	return (ds->ds_dbuf->db_data);
269}
270
271typedef struct dsl_dataset_promote_arg {
272	const char *ddpa_clonename;
273	dsl_dataset_t *ddpa_clone;
274	list_t shared_snaps, origin_snaps, clone_snaps;
275	dsl_dataset_t *origin_origin; /* origin of the origin */
276	uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap;
277	nvlist_t *err_ds;
278	cred_t *cr;
279} dsl_dataset_promote_arg_t;
280
281typedef struct dsl_dataset_rollback_arg {
282	const char *ddra_fsname;
283	const char *ddra_tosnap;
284	void *ddra_owner;
285	nvlist_t *ddra_result;
286} dsl_dataset_rollback_arg_t;
287
288typedef struct dsl_dataset_snapshot_arg {
289	nvlist_t *ddsa_snaps;
290	nvlist_t *ddsa_props;
291	nvlist_t *ddsa_errors;
292	cred_t *ddsa_cr;
293} dsl_dataset_snapshot_arg_t;
294
295/*
296 * The max length of a temporary tag prefix is the number of hex digits
297 * required to express UINT64_MAX plus one for the hyphen.
298 */
299#define	MAX_TAG_PREFIX_LEN	17
300
301#define	dsl_dataset_is_snapshot(ds) \
302	(dsl_dataset_phys(ds)->ds_num_children != 0)
303
304#define	DS_UNIQUE_IS_ACCURATE(ds)	\
305	((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
306
307/* flags for holding the dataset */
308typedef enum ds_hold_flags {
309	DS_HOLD_FLAG_DECRYPT    = 1 << 0 /* needs access to encrypted data */
310} ds_hold_flags_t;
311
312int dsl_dataset_hold(struct dsl_pool *dp, const char *name, void *tag,
313    dsl_dataset_t **dsp);
314int dsl_dataset_hold_flags(struct dsl_pool *dp, const char *name,
315    ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
316boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds,
317    void *tag);
318int dsl_dataset_create_key_mapping(dsl_dataset_t *ds);
319int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj, void *tag,
320    dsl_dataset_t **);
321int dsl_dataset_hold_obj_flags(struct dsl_pool *dp, uint64_t dsobj,
322	ds_hold_flags_t flags, void *tag, dsl_dataset_t **);
323void dsl_dataset_remove_key_mapping(dsl_dataset_t *ds);
324void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
325void dsl_dataset_rele_flags(dsl_dataset_t *ds, ds_hold_flags_t flags,
326    void *tag);
327int dsl_dataset_own(struct dsl_pool *dp, const char *name,
328    ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
329int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
330    ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
331void dsl_dataset_disown(dsl_dataset_t *ds, ds_hold_flags_t flags, void *tag);
332void dsl_dataset_name(dsl_dataset_t *ds, char *name);
333boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, void *tag);
334int dsl_dataset_namelen(dsl_dataset_t *ds);
335boolean_t dsl_dataset_has_owner(dsl_dataset_t *ds);
336uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname,
337    dsl_dataset_t *origin, uint64_t flags, cred_t *,
338    struct dsl_crypto_params *, dmu_tx_t *);
339uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
340    struct dsl_crypto_params *dcp, uint64_t flags, dmu_tx_t *tx);
341void dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx);
342int dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx);
343int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors);
344void dsl_dataset_promote_sync(void *arg, dmu_tx_t *tx);
345int dsl_dataset_promote_check(void *arg, dmu_tx_t *tx);
346int dsl_dataset_promote(const char *name, char *conflsnap);
347int dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head,
348    boolean_t force);
349int dsl_dataset_rename_snapshot(const char *fsname,
350    const char *oldsnapname, const char *newsnapname, boolean_t recursive);
351int dsl_dataset_snapshot_tmp(const char *fsname, const char *snapname,
352    minor_t cleanup_minor, const char *htag);
353
354blkptr_t *dsl_dataset_get_blkptr(dsl_dataset_t *ds);
355
356spa_t *dsl_dataset_get_spa(dsl_dataset_t *ds);
357
358boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds,
359    dsl_dataset_t *snap);
360
361void dsl_dataset_sync(dsl_dataset_t *os, zio_t *zio, dmu_tx_t *tx);
362void dsl_dataset_sync_done(dsl_dataset_t *os, dmu_tx_t *tx);
363
364void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp,
365    dmu_tx_t *tx);
366int dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp,
367    dmu_tx_t *tx, boolean_t async);
368void dsl_dataset_block_remapped(dsl_dataset_t *ds, uint64_t vdev,
369    uint64_t offset, uint64_t size, uint64_t birth, dmu_tx_t *tx);
370
371void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx);
372
373int get_clones_stat_impl(dsl_dataset_t *ds, nvlist_t *val);
374char *get_receive_resume_stats_impl(dsl_dataset_t *ds);
375char *get_child_receive_stats(dsl_dataset_t *ds);
376uint64_t dsl_get_refratio(dsl_dataset_t *ds);
377uint64_t dsl_get_logicalreferenced(dsl_dataset_t *ds);
378uint64_t dsl_get_compressratio(dsl_dataset_t *ds);
379uint64_t dsl_get_used(dsl_dataset_t *ds);
380uint64_t dsl_get_creation(dsl_dataset_t *ds);
381uint64_t dsl_get_creationtxg(dsl_dataset_t *ds);
382uint64_t dsl_get_refquota(dsl_dataset_t *ds);
383uint64_t dsl_get_refreservation(dsl_dataset_t *ds);
384uint64_t dsl_get_guid(dsl_dataset_t *ds);
385uint64_t dsl_get_unique(dsl_dataset_t *ds);
386uint64_t dsl_get_objsetid(dsl_dataset_t *ds);
387uint64_t dsl_get_userrefs(dsl_dataset_t *ds);
388uint64_t dsl_get_defer_destroy(dsl_dataset_t *ds);
389uint64_t dsl_get_referenced(dsl_dataset_t *ds);
390uint64_t dsl_get_numclones(dsl_dataset_t *ds);
391uint64_t dsl_get_inconsistent(dsl_dataset_t *ds);
392uint64_t dsl_get_available(dsl_dataset_t *ds);
393int dsl_get_written(dsl_dataset_t *ds, uint64_t *written);
394int dsl_get_prev_snap(dsl_dataset_t *ds, char *snap);
395int dsl_get_mountpoint(dsl_dataset_t *ds, const char *dsname, char *value,
396    char *source);
397
398void get_clones_stat(dsl_dataset_t *ds, nvlist_t *nv);
399
400void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv);
401
402void dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat);
403void dsl_dataset_space(dsl_dataset_t *ds,
404    uint64_t *refdbytesp, uint64_t *availbytesp,
405    uint64_t *usedobjsp, uint64_t *availobjsp);
406uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
407int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *new,
408    uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
409int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last,
410    uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
411boolean_t dsl_dataset_is_dirty(dsl_dataset_t *ds);
412
413int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf);
414
415int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
416    uint64_t asize, uint64_t inflight, uint64_t *used,
417    uint64_t *ref_rsrv);
418int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source,
419    uint64_t quota);
420int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source,
421    uint64_t reservation);
422
423boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier,
424    uint64_t earlier_txg);
425void dsl_dataset_long_hold(dsl_dataset_t *ds, void *tag);
426void dsl_dataset_long_rele(dsl_dataset_t *ds, void *tag);
427boolean_t dsl_dataset_long_held(dsl_dataset_t *ds);
428
429int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
430    dsl_dataset_t *origin_head, boolean_t force, void *owner, dmu_tx_t *tx);
431void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
432    dsl_dataset_t *origin_head, dmu_tx_t *tx);
433int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
434    dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr);
435void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
436    dmu_tx_t *tx);
437
438void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,
439    dmu_tx_t *tx);
440void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
441int dsl_dataset_get_snapname(dsl_dataset_t *ds);
442int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
443    uint64_t *value);
444int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx,
445    boolean_t adj_cnt);
446void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
447    zprop_source_t source, uint64_t value, dmu_tx_t *tx);
448void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx);
449boolean_t dsl_dataset_is_zapified(dsl_dataset_t *ds);
450boolean_t dsl_dataset_has_resume_receive_state(dsl_dataset_t *ds);
451
452int dsl_dataset_rollback_check(void *arg, dmu_tx_t *tx);
453void dsl_dataset_rollback_sync(void *arg, dmu_tx_t *tx);
454int dsl_dataset_rollback(const char *fsname, const char *tosnap, void *owner,
455    nvlist_t *result);
456
457uint64_t dsl_dataset_get_remap_deadlist_object(dsl_dataset_t *ds);
458void dsl_dataset_create_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
459boolean_t dsl_dataset_remap_deadlist_exists(dsl_dataset_t *ds);
460void dsl_dataset_destroy_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
461
462void dsl_dataset_activate_feature(uint64_t dsobj,
463    spa_feature_t f, dmu_tx_t *tx);
464void dsl_dataset_deactivate_feature(uint64_t dsobj,
465    spa_feature_t f, dmu_tx_t *tx);
466
467#ifdef ZFS_DEBUG
468#define	dprintf_ds(ds, fmt, ...) do { \
469	if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
470	char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \
471	dsl_dataset_name(ds, __ds_name); \
472	dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
473	kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \
474	} \
475_NOTE(CONSTCOND) } while (0)
476#else
477#define	dprintf_ds(dd, fmt, ...)
478#endif
479
480#ifdef	__cplusplus
481}
482#endif
483
484#endif /* _SYS_DSL_DATASET_H */
485