[mirror_zfs.git] / include / sys / dsl_dataset.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2012 by Delphix. All rights reserved.
 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
 */

#ifndef	_SYS_DSL_DATASET_H
#define	_SYS_DSL_DATASET_H

#include <sys/dmu.h>
#include <sys/spa.h>
#include <sys/txg.h>
#include <sys/zio.h>
#include <sys/bplist.h>
#include <sys/dsl_synctask.h>
#include <sys/zfs_context.h>
#include <sys/dsl_deadlist.h>
#include <sys/refcount.h>

#ifdef	__cplusplus
extern "C" {
#endif

struct dsl_dataset;
struct dsl_dir;
struct dsl_pool;

#define	DS_FLAG_INCONSISTENT	(1ULL<<0)
#define	DS_IS_INCONSISTENT(ds)	\
	((ds)->ds_phys->ds_flags & DS_FLAG_INCONSISTENT)
/*
 * Note: nopromote can not yet be set, but we want support for it in this
 * on-disk version, so that we don't need to upgrade for it later.
 */
#define	DS_FLAG_NOPROMOTE	(1ULL<<1)

/*
 * DS_FLAG_UNIQUE_ACCURATE is set if ds_unique_bytes has been correctly
 * calculated for head datasets (starting with SPA_VERSION_UNIQUE_ACCURATE,
 * refquota/refreservations).
 */
#define	DS_FLAG_UNIQUE_ACCURATE	(1ULL<<2)

/*
 * DS_FLAG_DEFER_DESTROY is set after 'zfs destroy -d' has been called
 * on a dataset. This allows the dataset to be destroyed using 'zfs release'.
 */
#define	DS_FLAG_DEFER_DESTROY	(1ULL<<3)
#define	DS_IS_DEFER_DESTROY(ds)	\
	((ds)->ds_phys->ds_flags & DS_FLAG_DEFER_DESTROY)

/*
 * DS_FLAG_CI_DATASET is set if the dataset contains a file system whose
 * name lookups should be performed case-insensitively.
 */
#define	DS_FLAG_CI_DATASET	(1ULL<<16)

#define	DS_CREATE_FLAG_NODIRTY	(1ULL<<24)

typedef struct dsl_dataset_phys {
	uint64_t ds_dir_obj;		/* DMU_OT_DSL_DIR */
	uint64_t ds_prev_snap_obj;	/* DMU_OT_DSL_DATASET */
	uint64_t ds_prev_snap_txg;
	uint64_t ds_next_snap_obj;	/* DMU_OT_DSL_DATASET */
	uint64_t ds_snapnames_zapobj;	/* DMU_OT_DSL_DS_SNAP_MAP 0 for snaps */
	uint64_t ds_num_children;	/* clone/snap children; ==0 for head */
	uint64_t ds_creation_time;	/* seconds since 1970 */
	uint64_t ds_creation_txg;
	uint64_t ds_deadlist_obj;	/* DMU_OT_DEADLIST */
	/*
	 * ds_referenced_bytes, ds_compressed_bytes, and ds_uncompressed_bytes
	 * include all blocks referenced by this dataset, including those
	 * shared with any other datasets.
	 */
	uint64_t ds_referenced_bytes;
	uint64_t ds_compressed_bytes;
	uint64_t ds_uncompressed_bytes;
	uint64_t ds_unique_bytes;	/* only relevant to snapshots */
	/*
	 * The ds_fsid_guid is a 56-bit ID that can change to avoid
	 * collisions.  The ds_guid is a 64-bit ID that will never
	 * change, so there is a small probability that it will collide.
	 */
	uint64_t ds_fsid_guid;
	uint64_t ds_guid;
	uint64_t ds_flags;		/* DS_FLAG_* */
	blkptr_t ds_bp;
	uint64_t ds_next_clones_obj;	/* DMU_OT_DSL_CLONES */
	uint64_t ds_props_obj;		/* DMU_OT_DSL_PROPS for snaps */
	uint64_t ds_userrefs_obj;	/* DMU_OT_USERREFS */
	uint64_t ds_pad[5]; /* pad out to 320 bytes for good measure */
} dsl_dataset_phys_t;

typedef struct dsl_dataset {
	/* Immutable: */
	struct dsl_dir *ds_dir;
	dsl_dataset_phys_t *ds_phys;
	dmu_buf_t *ds_dbuf;
	uint64_t ds_object;
	uint64_t ds_fsid_guid;

	/* only used in syncing context, only valid for non-snapshots: */
	struct dsl_dataset *ds_prev;

	/* has internal locking: */
	dsl_deadlist_t ds_deadlist;
	bplist_t ds_pending_deadlist;

	/* protected by lock on pool's dp_dirty_datasets list */
	txg_node_t ds_dirty_link;
	list_node_t ds_synced_link;

	/*
	 * ds_phys->ds_<accounting> is also protected by ds_lock.
	 * Protected by ds_lock:
	 */
	kmutex_t ds_lock;
	objset_t *ds_objset;
	uint64_t ds_userrefs;
	void *ds_owner;

	/*
	 * Long holds prevent the ds from being destroyed; they allow the
	 * ds to remain held even after dropping the dp_config_rwlock.
	 * Owning counts as a long hold.  See the comments above
	 * dsl_pool_hold() for details.
	 */
	refcount_t ds_longholds;

	/* no locking; only for making guesses */
	uint64_t ds_trysnap_txg;

	/* for objset_open() */
	kmutex_t ds_opening_lock;

	uint64_t ds_reserved;	/* cached refreservation */
	uint64_t ds_quota;	/* cached refquota */

	kmutex_t ds_sendstream_lock;
	list_t ds_sendstreams;

	/* Protected by ds_lock; keep at end of struct for better locality */
	char ds_snapname[MAXNAMELEN];
} dsl_dataset_t;

/*
 * The max length of a temporary tag prefix is the number of hex digits
 * required to express UINT64_MAX plus one for the hyphen.
 */
#define	MAX_TAG_PREFIX_LEN	17

#define	dsl_dataset_is_snapshot(ds) \
	((ds)->ds_phys->ds_num_children != 0)

#define	DS_UNIQUE_IS_ACCURATE(ds)	\
	(((ds)->ds_phys->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)

int dsl_dataset_hold(struct dsl_pool *dp, const char *name, void *tag,
    dsl_dataset_t **dsp);
int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj, void *tag,
    dsl_dataset_t **);
void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
int dsl_dataset_own(struct dsl_pool *dp, const char *name,
    void *tag, dsl_dataset_t **dsp);
int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
    void *tag, dsl_dataset_t **dsp);
void dsl_dataset_disown(dsl_dataset_t *ds, void *tag);
void dsl_dataset_name(dsl_dataset_t *ds, char *name);
boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, void *tag);
void dsl_register_onexit_hold_cleanup(dsl_dataset_t *ds, const char *htag,
    minor_t minor);
uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname,
    dsl_dataset_t *origin, uint64_t flags, cred_t *, dmu_tx_t *);
uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
    uint64_t flags, dmu_tx_t *tx);
int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors);
int dsl_dataset_promote(const char *name, char *conflsnap);
int dsl_dataset_rename_snapshot(const char *fsname,
    const char *oldsnapname, const char *newsnapname, boolean_t recursive);
int dsl_dataset_snapshot_tmp(const char *fsname, const char *snapname,
    minor_t cleanup_minor, const char *htag);

blkptr_t *dsl_dataset_get_blkptr(dsl_dataset_t *ds);
void dsl_dataset_set_blkptr(dsl_dataset_t *ds, blkptr_t *bp, dmu_tx_t *tx);

spa_t *dsl_dataset_get_spa(dsl_dataset_t *ds);

boolean_t dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds);

void dsl_dataset_sync(dsl_dataset_t *os, zio_t *zio, dmu_tx_t *tx);

void dsl_dataset_block_born(dsl_dataset_t *ds, const blkptr_t *bp,
    dmu_tx_t *tx);
int dsl_dataset_block_kill(dsl_dataset_t *ds, const blkptr_t *bp,
    dmu_tx_t *tx, boolean_t async);
boolean_t dsl_dataset_block_freeable(dsl_dataset_t *ds, const blkptr_t *bp,
    uint64_t blk_birth);
uint64_t dsl_dataset_prev_snap_txg(dsl_dataset_t *ds);
int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
    uint64_t *value);

void dsl_dataset_dirty(dsl_dataset_t *ds, dmu_tx_t *tx);
void dsl_dataset_stats(dsl_dataset_t *os, nvlist_t *nv);
void dsl_dataset_fast_stat(dsl_dataset_t *ds, dmu_objset_stats_t *stat);
void dsl_dataset_space(dsl_dataset_t *ds,
    uint64_t *refdbytesp, uint64_t *availbytesp,
    uint64_t *usedobjsp, uint64_t *availobjsp);
uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *new,
    uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last,
    uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
boolean_t dsl_dataset_is_dirty(dsl_dataset_t *ds);

int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf);

int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
    uint64_t asize, uint64_t inflight, uint64_t *used,
    uint64_t *ref_rsrv);
int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source,
    uint64_t quota);
int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source,
    uint64_t reservation);

boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier);
void dsl_dataset_long_hold(dsl_dataset_t *ds, void *tag);
void dsl_dataset_long_rele(dsl_dataset_t *ds, void *tag);
boolean_t dsl_dataset_long_held(dsl_dataset_t *ds);

int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
    dsl_dataset_t *origin_head, boolean_t force);
void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
    dsl_dataset_t *origin_head, dmu_tx_t *tx);
int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
    dmu_tx_t *tx);
void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
    dmu_tx_t *tx);

void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,
    dmu_tx_t *tx);
void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
int dsl_dataset_get_snapname(dsl_dataset_t *ds);
int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
    uint64_t *value);
int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx);
void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
    zprop_source_t source, uint64_t value, dmu_tx_t *tx);
int dsl_dataset_rollback(const char *fsname);

#ifdef ZFS_DEBUG
#define	dprintf_ds(ds, fmt, ...) do { \
	if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
	char *__ds_name = kmem_alloc(MAXNAMELEN, KM_PUSHPAGE); \
	dsl_dataset_name(ds, __ds_name); \
	dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
	kmem_free(__ds_name, MAXNAMELEN); \
	} \
_NOTE(CONSTCOND) } while (0)
#else
#define	dprintf_ds(dd, fmt, ...)
#endif

#ifdef	__cplusplus
}
#endif

#endif /* _SYS_DSL_DATASET_H */
Commit	Line	Data
34dc7c2f BB	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	/*
428870ff	22	* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
9ae529ec	23	* Copyright (c) 2012 by Delphix. All rights reserved.
37abac6d	24	* Copyright (c) 2012, Joyent, Inc. All rights reserved.
34dc7c2f BB	25	*/
	26
	27	#ifndef _SYS_DSL_DATASET_H
	28	#define _SYS_DSL_DATASET_H
	29
34dc7c2f BB	30	#include <sys/dmu.h>
	31	#include <sys/spa.h>
	32	#include <sys/txg.h>
	33	#include <sys/zio.h>
	34	#include <sys/bplist.h>
	35	#include <sys/dsl_synctask.h>
	36	#include <sys/zfs_context.h>
428870ff	37	#include <sys/dsl_deadlist.h>
13fe0198	38	#include <sys/refcount.h>
34dc7c2f BB	39
	40	#ifdef __cplusplus
	41	extern "C" {
	42	#endif
	43
	44	struct dsl_dataset;
	45	struct dsl_dir;
	46	struct dsl_pool;
	47
34dc7c2f	48	#define DS_FLAG_INCONSISTENT (1ULL<<0)
b128c09f BB	49	#define DS_IS_INCONSISTENT(ds) \
b128c09f BB	50	((ds)->ds_phys->ds_flags & DS_FLAG_INCONSISTENT)
34dc7c2f	51	/*
13fe0198 MA	52	* Note: nopromote can not yet be set, but we want support for it in this
13fe0198 MA	53	* on-disk version, so that we don't need to upgrade for it later.
34dc7c2f BB	54	*/
	55	#define DS_FLAG_NOPROMOTE (1ULL<<1)
	56
	57	/*
	58	* DS_FLAG_UNIQUE_ACCURATE is set if ds_unique_bytes has been correctly
	59	* calculated for head datasets (starting with SPA_VERSION_UNIQUE_ACCURATE,
	60	* refquota/refreservations).
	61	*/
	62	#define DS_FLAG_UNIQUE_ACCURATE (1ULL<<2)
	63
45d1cae3 BB	64	/*
	65	* DS_FLAG_DEFER_DESTROY is set after 'zfs destroy -d' has been called
	66	* on a dataset. This allows the dataset to be destroyed using 'zfs release'.
	67	*/
	68	#define DS_FLAG_DEFER_DESTROY (1ULL<<3)
	69	#define DS_IS_DEFER_DESTROY(ds) \
	70	((ds)->ds_phys->ds_flags & DS_FLAG_DEFER_DESTROY)
	71
34dc7c2f BB	72	/*
	73	* DS_FLAG_CI_DATASET is set if the dataset contains a file system whose
	74	* name lookups should be performed case-insensitively.
	75	*/
	76	#define DS_FLAG_CI_DATASET (1ULL<<16)
	77
13fe0198 MA	78	#define DS_CREATE_FLAG_NODIRTY (1ULL<<24)
13fe0198 MA	79
34dc7c2f	80	typedef struct dsl_dataset_phys {
b128c09f BB	81	uint64_t ds_dir_obj; /* DMU_OT_DSL_DIR */
b128c09f BB	82	uint64_t ds_prev_snap_obj; /* DMU_OT_DSL_DATASET */
34dc7c2f	83	uint64_t ds_prev_snap_txg;
b128c09f BB	84	uint64_t ds_next_snap_obj; /* DMU_OT_DSL_DATASET */
b128c09f BB	85	uint64_t ds_snapnames_zapobj; /* DMU_OT_DSL_DS_SNAP_MAP 0 for snaps */
34dc7c2f BB	86	uint64_t ds_num_children; /* clone/snap children; ==0 for head */
	87	uint64_t ds_creation_time; /* seconds since 1970 */
	88	uint64_t ds_creation_txg;
428870ff	89	uint64_t ds_deadlist_obj; /* DMU_OT_DEADLIST */
9ae529ec CS	90	/*
	91	* ds_referenced_bytes, ds_compressed_bytes, and ds_uncompressed_bytes
	92	* include all blocks referenced by this dataset, including those
	93	* shared with any other datasets.
	94	*/
	95	uint64_t ds_referenced_bytes;
34dc7c2f BB	96	uint64_t ds_compressed_bytes;
	97	uint64_t ds_uncompressed_bytes;
	98	uint64_t ds_unique_bytes; /* only relevant to snapshots */
	99	/*
	100	* The ds_fsid_guid is a 56-bit ID that can change to avoid
	101	* collisions. The ds_guid is a 64-bit ID that will never
	102	* change, so there is a small probability that it will collide.
	103	*/
	104	uint64_t ds_fsid_guid;
	105	uint64_t ds_guid;
b128c09f	106	uint64_t ds_flags; /* DS_FLAG_* */
34dc7c2f	107	blkptr_t ds_bp;
b128c09f BB	108	uint64_t ds_next_clones_obj; /* DMU_OT_DSL_CLONES */
b128c09f BB	109	uint64_t ds_props_obj; /* DMU_OT_DSL_PROPS for snaps */
45d1cae3 BB	110	uint64_t ds_userrefs_obj; /* DMU_OT_USERREFS */
45d1cae3 BB	111	uint64_t ds_pad[5]; /* pad out to 320 bytes for good measure */
34dc7c2f BB	112	} dsl_dataset_phys_t;
	113
	114	typedef struct dsl_dataset {
	115	/* Immutable: */
	116	struct dsl_dir *ds_dir;
	117	dsl_dataset_phys_t *ds_phys;
	118	dmu_buf_t *ds_dbuf;
	119	uint64_t ds_object;
	120	uint64_t ds_fsid_guid;
	121
b128c09f BB	122	/* only used in syncing context, only valid for non-snapshots: */
b128c09f BB	123	struct dsl_dataset *ds_prev;
34dc7c2f BB	124
34dc7c2f BB	125	/* has internal locking: */
428870ff BB	126	dsl_deadlist_t ds_deadlist;
428870ff BB	127	bplist_t ds_pending_deadlist;
34dc7c2f BB	128
	129	/* protected by lock on pool's dp_dirty_datasets list */
	130	txg_node_t ds_dirty_link;
	131	list_node_t ds_synced_link;
	132
	133	/*
	134	* ds_phys->ds_<accounting> is also protected by ds_lock.
	135	* Protected by ds_lock:
	136	*/
	137	kmutex_t ds_lock;
428870ff	138	objset_t *ds_objset;
45d1cae3	139	uint64_t ds_userrefs;
13fe0198	140	void *ds_owner;
b128c09f BB	141
b128c09f BB	142	/*
13fe0198 MA	143	* Long holds prevent the ds from being destroyed; they allow the
	144	* ds to remain held even after dropping the dp_config_rwlock.
	145	* Owning counts as a long hold. See the comments above
	146	* dsl_pool_hold() for details.
b128c09f	147	*/
13fe0198	148	refcount_t ds_longholds;
34dc7c2f BB	149
	150	/* no locking; only for making guesses */
	151	uint64_t ds_trysnap_txg;
	152
	153	/* for objset_open() */
	154	kmutex_t ds_opening_lock;
	155
	156	uint64_t ds_reserved; /* cached refreservation */
	157	uint64_t ds_quota; /* cached refquota */
	158
37abac6d BP	159	kmutex_t ds_sendstream_lock;
	160	list_t ds_sendstreams;
	161
34dc7c2f BB	162	/* Protected by ds_lock; keep at end of struct for better locality */
	163	char ds_snapname[MAXNAMELEN];
	164	} dsl_dataset_t;
	165
572e2857 BB	166	/*
	167	* The max length of a temporary tag prefix is the number of hex digits
	168	* required to express UINT64_MAX plus one for the hyphen.
	169	*/
	170	#define MAX_TAG_PREFIX_LEN 17
	171
428870ff	172	#define dsl_dataset_is_snapshot(ds) \
34dc7c2f BB	173	((ds)->ds_phys->ds_num_children != 0)
	174
	175	#define DS_UNIQUE_IS_ACCURATE(ds) \
	176	(((ds)->ds_phys->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
	177
13fe0198 MA	178	int dsl_dataset_hold(struct dsl_pool dp, const char name, void *tag,
	179	dsl_dataset_t **dsp);
	180	int dsl_dataset_hold_obj(struct dsl_pool dp, uint64_t dsobj, void tag,
	181	dsl_dataset_t **);
	182	void dsl_dataset_rele(dsl_dataset_t ds, void tag);
	183	int dsl_dataset_own(struct dsl_pool dp, const char name,
428870ff	184	void tag, dsl_dataset_t *dsp);
b128c09f	185	int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
13fe0198	186	void tag, dsl_dataset_t *dsp);
428870ff	187	void dsl_dataset_disown(dsl_dataset_t ds, void tag);
13fe0198 MA	188	void dsl_dataset_name(dsl_dataset_t ds, char name);
13fe0198 MA	189	boolean_t dsl_dataset_tryown(dsl_dataset_t ds, void tag);
572e2857 BB	190	void dsl_register_onexit_hold_cleanup(dsl_dataset_t ds, const char htag,
572e2857 BB	191	minor_t minor);
b128c09f BB	192	uint64_t dsl_dataset_create_sync(dsl_dir_t pds, const char lastname,
	193	dsl_dataset_t origin, uint64_t flags, cred_t , dmu_tx_t *);
	194	uint64_t dsl_dataset_create_sync_dd(dsl_dir_t dd, dsl_dataset_t origin,
34dc7c2f	195	uint64_t flags, dmu_tx_t *tx);
13fe0198	196	int dsl_dataset_snapshot(nvlist_t snaps, nvlist_t props, nvlist_t *errors);
428870ff	197	int dsl_dataset_promote(const char name, char conflsnap);
13fe0198 MA	198	int dsl_dataset_rename_snapshot(const char *fsname,
	199	const char oldsnapname, const char newsnapname, boolean_t recursive);
	200	int dsl_dataset_snapshot_tmp(const char fsname, const char snapname,
	201	minor_t cleanup_minor, const char *htag);
34dc7c2f	202
34dc7c2f BB	203	blkptr_t dsl_dataset_get_blkptr(dsl_dataset_t ds);
	204	void dsl_dataset_set_blkptr(dsl_dataset_t ds, blkptr_t bp, dmu_tx_t *tx);
	205
	206	spa_t dsl_dataset_get_spa(dsl_dataset_t ds);
	207
	208	boolean_t dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds);
	209
	210	void dsl_dataset_sync(dsl_dataset_t os, zio_t zio, dmu_tx_t *tx);
	211
428870ff	212	void dsl_dataset_block_born(dsl_dataset_t ds, const blkptr_t bp,
34dc7c2f	213	dmu_tx_t *tx);
428870ff BB	214	int dsl_dataset_block_kill(dsl_dataset_t ds, const blkptr_t bp,
	215	dmu_tx_t *tx, boolean_t async);
	216	boolean_t dsl_dataset_block_freeable(dsl_dataset_t ds, const blkptr_t bp,
	217	uint64_t blk_birth);
34dc7c2f	218	uint64_t dsl_dataset_prev_snap_txg(dsl_dataset_t *ds);
6772fb67 BB	219	int dsl_dataset_snap_lookup(dsl_dataset_t ds, const char name,
6772fb67 BB	220	uint64_t *value);
34dc7c2f BB	221
	222	void dsl_dataset_dirty(dsl_dataset_t ds, dmu_tx_t tx);
	223	void dsl_dataset_stats(dsl_dataset_t os, nvlist_t nv);
	224	void dsl_dataset_fast_stat(dsl_dataset_t ds, dmu_objset_stats_t stat);
	225	void dsl_dataset_space(dsl_dataset_t *ds,
	226	uint64_t refdbytesp, uint64_t availbytesp,
	227	uint64_t usedobjsp, uint64_t availobjsp);
	228	uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
330d06f9 MA	229	int dsl_dataset_space_written(dsl_dataset_t oldsnap, dsl_dataset_t new,
	230	uint64_t usedp, uint64_t compp, uint64_t *uncompp);
	231	int dsl_dataset_space_wouldfree(dsl_dataset_t firstsnap, dsl_dataset_t last,
	232	uint64_t usedp, uint64_t compp, uint64_t *uncompp);
04434775	233	boolean_t dsl_dataset_is_dirty(dsl_dataset_t *ds);
34dc7c2f	234
34dc7c2f BB	235	int dsl_dsobj_to_dsname(char pname, uint64_t obj, char buf);
	236
	237	int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
	238	uint64_t asize, uint64_t inflight, uint64_t *used,
	239	uint64_t *ref_rsrv);
13fe0198	240	int dsl_dataset_set_refquota(const char *dsname, zprop_source_t source,
428870ff	241	uint64_t quota);
13fe0198	242	int dsl_dataset_set_refreservation(const char *dsname, zprop_source_t source,
428870ff BB	243	uint64_t reservation);
428870ff BB	244
13fe0198 MA	245	boolean_t dsl_dataset_is_before(dsl_dataset_t later, dsl_dataset_t earlier);
	246	void dsl_dataset_long_hold(dsl_dataset_t ds, void tag);
	247	void dsl_dataset_long_rele(dsl_dataset_t ds, void tag);
	248	boolean_t dsl_dataset_long_held(dsl_dataset_t *ds);
	249
	250	int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
	251	dsl_dataset_t *origin_head, boolean_t force);
	252	void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
	253	dsl_dataset_t origin_head, dmu_tx_t tx);
	254	int dsl_dataset_snapshot_check_impl(dsl_dataset_t ds, const char snapname,
	255	dmu_tx_t *tx);
	256	void dsl_dataset_snapshot_sync_impl(dsl_dataset_t ds, const char snapname,
	257	dmu_tx_t *tx);
	258
	259	void dsl_dataset_remove_from_next_clones(dsl_dataset_t *ds, uint64_t obj,
	260	dmu_tx_t *tx);
	261	void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
	262	int dsl_dataset_get_snapname(dsl_dataset_t *ds);
	263	int dsl_dataset_snap_lookup(dsl_dataset_t ds, const char name,
	264	uint64_t *value);
	265	int dsl_dataset_snap_remove(dsl_dataset_t ds, const char name, dmu_tx_t *tx);
	266	void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
	267	zprop_source_t source, uint64_t value, dmu_tx_t *tx);
	268	int dsl_dataset_rollback(const char *fsname);
34dc7c2f BB	269
	270	#ifdef ZFS_DEBUG
	271	#define dprintf_ds(ds, fmt, ...) do { \
	272	if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
b8d06fca	273	char *__ds_name = kmem_alloc(MAXNAMELEN, KM_PUSHPAGE); \
34dc7c2f BB	274	dsl_dataset_name(ds, __ds_name); \
	275	dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
	276	kmem_free(__ds_name, MAXNAMELEN); \
	277	} \
	278	_NOTE(CONSTCOND) } while (0)
	279	#else
	280	#define dprintf_ds(dd, fmt, ...)
	281	#endif
	282
	283	#ifdef __cplusplus
	284	}
	285	#endif
	286
	287	#endif /* _SYS_DSL_DATASET_H */