[mirror_zfs.git] / module / zfs / 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.
 */

#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>

#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)
/*
 * NB: 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.  It
 * will be needed when we implement 'zfs split' (where the split off
 * clone should not be promoted).
 */
#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)

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 */
	uint64_t ds_used_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;

	/* to protect against multiple concurrent incremental recv */
	kmutex_t ds_recvlock;

	/* 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;

	/*
	 * ds_owner is protected by the ds_rwlock and the ds_lock
	 */
	krwlock_t ds_rwlock;
	kcondvar_t ds_exclusive_cv;
	void *ds_owner;

	/* 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 */

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

struct dsl_ds_destroyarg {
	dsl_dataset_t *ds;		/* ds to destroy */
	dsl_dataset_t *rm_origin;	/* also remove our origin? */
	boolean_t is_origin_rm;		/* set if removing origin snap */
	boolean_t defer;		/* destroy -d requested? */
	boolean_t releasing;		/* destroying due to release? */
	boolean_t need_prep;		/* do we need to retry due to EBUSY? */
};

/*
 * 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

struct dsl_ds_holdarg {
	dsl_sync_task_group_t *dstg;
	char *htag;
	char *snapname;
	boolean_t recursive;
	boolean_t gotone;
	boolean_t temphold;
	char failed[MAXPATHLEN];
};

#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(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 **);
int dsl_dataset_own(const char *name, boolean_t inconsistentok,
    void *tag, dsl_dataset_t **dsp);
int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
    boolean_t inconsistentok, void *tag, dsl_dataset_t **dsp);
void dsl_dataset_name(dsl_dataset_t *ds, char *name);
void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
void dsl_dataset_disown(dsl_dataset_t *ds, void *tag);
void dsl_dataset_drop_ref(dsl_dataset_t *ds, void *tag);
boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, boolean_t inconsistentok,
    void *tag);
void dsl_dataset_make_exclusive(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_destroy(dsl_dataset_t *ds, void *tag, boolean_t defer);
int dsl_snapshots_destroy(char *fsname, char *snapname, boolean_t defer);
dsl_checkfunc_t dsl_dataset_destroy_check;
dsl_syncfunc_t dsl_dataset_destroy_sync;
dsl_checkfunc_t dsl_dataset_snapshot_check;
dsl_syncfunc_t dsl_dataset_snapshot_sync;
dsl_syncfunc_t dsl_dataset_user_hold_sync;
int dsl_dataset_rename(char *name, const char *newname, boolean_t recursive);
int dsl_dataset_promote(const char *name, char *conflsnap);
int dsl_dataset_clone_swap(dsl_dataset_t *clone, dsl_dataset_t *origin_head,
    boolean_t force);
int dsl_dataset_user_hold(char *dsname, char *snapname, char *htag,
    boolean_t recursive, boolean_t temphold, int cleanup_fd);
int dsl_dataset_user_hold_for_send(dsl_dataset_t *ds, char *htag,
    boolean_t temphold);
int dsl_dataset_user_release(char *dsname, char *snapname, char *htag,
    boolean_t recursive);
int dsl_dataset_user_release_tmp(struct dsl_pool *dp, uint64_t dsobj,
    char *htag, boolean_t retry);
int dsl_dataset_get_holds(const char *dsname, nvlist_t **nvp);

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);

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_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_quota(const char *dsname, zprop_source_t source,
    uint64_t quota);
dsl_syncfunc_t dsl_dataset_set_quota_sync;
int dsl_dataset_set_reservation(const char *dsname, zprop_source_t source,
    uint64_t reservation);

int dsl_destroy_inconsistent(const char *dsname, void *arg);

#ifdef ZFS_DEBUG
#define	dprintf_ds(ds, fmt, ...) do { \
	if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
	char *__ds_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); \
	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.
34dc7c2f BB	23	*/
	24
	25	#ifndef _SYS_DSL_DATASET_H
	26	#define _SYS_DSL_DATASET_H
	27
34dc7c2f BB	28	#include <sys/dmu.h>
	29	#include <sys/spa.h>
	30	#include <sys/txg.h>
	31	#include <sys/zio.h>
	32	#include <sys/bplist.h>
	33	#include <sys/dsl_synctask.h>
	34	#include <sys/zfs_context.h>
428870ff	35	#include <sys/dsl_deadlist.h>
34dc7c2f BB	36
	37	#ifdef __cplusplus
	38	extern "C" {
	39	#endif
	40
	41	struct dsl_dataset;
	42	struct dsl_dir;
	43	struct dsl_pool;
	44
34dc7c2f	45	#define DS_FLAG_INCONSISTENT (1ULL<<0)
b128c09f BB	46	#define DS_IS_INCONSISTENT(ds) \
b128c09f BB	47	((ds)->ds_phys->ds_flags & DS_FLAG_INCONSISTENT)
34dc7c2f BB	48	/*
	49	* NB: nopromote can not yet be set, but we want support for it in this
	50	* on-disk version, so that we don't need to upgrade for it later. It
	51	* will be needed when we implement 'zfs split' (where the split off
	52	* clone should not be promoted).
	53	*/
	54	#define DS_FLAG_NOPROMOTE (1ULL<<1)
	55
	56	/*
	57	* DS_FLAG_UNIQUE_ACCURATE is set if ds_unique_bytes has been correctly
	58	* calculated for head datasets (starting with SPA_VERSION_UNIQUE_ACCURATE,
	59	* refquota/refreservations).
	60	*/
	61	#define DS_FLAG_UNIQUE_ACCURATE (1ULL<<2)
	62
45d1cae3 BB	63	/*
	64	* DS_FLAG_DEFER_DESTROY is set after 'zfs destroy -d' has been called
	65	* on a dataset. This allows the dataset to be destroyed using 'zfs release'.
	66	*/
	67	#define DS_FLAG_DEFER_DESTROY (1ULL<<3)
	68	#define DS_IS_DEFER_DESTROY(ds) \
	69	((ds)->ds_phys->ds_flags & DS_FLAG_DEFER_DESTROY)
	70
34dc7c2f BB	71	/*
	72	* DS_FLAG_CI_DATASET is set if the dataset contains a file system whose
	73	* name lookups should be performed case-insensitively.
	74	*/
	75	#define DS_FLAG_CI_DATASET (1ULL<<16)
	76
	77	typedef struct dsl_dataset_phys {
b128c09f BB	78	uint64_t ds_dir_obj; /* DMU_OT_DSL_DIR */
b128c09f BB	79	uint64_t ds_prev_snap_obj; /* DMU_OT_DSL_DATASET */
34dc7c2f	80	uint64_t ds_prev_snap_txg;
b128c09f BB	81	uint64_t ds_next_snap_obj; /* DMU_OT_DSL_DATASET */
b128c09f BB	82	uint64_t ds_snapnames_zapobj; /* DMU_OT_DSL_DS_SNAP_MAP 0 for snaps */
34dc7c2f BB	83	uint64_t ds_num_children; /* clone/snap children; ==0 for head */
	84	uint64_t ds_creation_time; /* seconds since 1970 */
	85	uint64_t ds_creation_txg;
428870ff	86	uint64_t ds_deadlist_obj; /* DMU_OT_DEADLIST */
34dc7c2f BB	87	uint64_t ds_used_bytes;
	88	uint64_t ds_compressed_bytes;
	89	uint64_t ds_uncompressed_bytes;
	90	uint64_t ds_unique_bytes; /* only relevant to snapshots */
	91	/*
	92	* The ds_fsid_guid is a 56-bit ID that can change to avoid
	93	* collisions. The ds_guid is a 64-bit ID that will never
	94	* change, so there is a small probability that it will collide.
	95	*/
	96	uint64_t ds_fsid_guid;
	97	uint64_t ds_guid;
b128c09f	98	uint64_t ds_flags; /* DS_FLAG_* */
34dc7c2f	99	blkptr_t ds_bp;
b128c09f BB	100	uint64_t ds_next_clones_obj; /* DMU_OT_DSL_CLONES */
b128c09f BB	101	uint64_t ds_props_obj; /* DMU_OT_DSL_PROPS for snaps */
45d1cae3 BB	102	uint64_t ds_userrefs_obj; /* DMU_OT_USERREFS */
45d1cae3 BB	103	uint64_t ds_pad[5]; /* pad out to 320 bytes for good measure */
34dc7c2f BB	104	} dsl_dataset_phys_t;
	105
	106	typedef struct dsl_dataset {
	107	/* Immutable: */
	108	struct dsl_dir *ds_dir;
	109	dsl_dataset_phys_t *ds_phys;
	110	dmu_buf_t *ds_dbuf;
	111	uint64_t ds_object;
	112	uint64_t ds_fsid_guid;
	113
b128c09f BB	114	/* only used in syncing context, only valid for non-snapshots: */
b128c09f BB	115	struct dsl_dataset *ds_prev;
34dc7c2f BB	116
34dc7c2f BB	117	/* has internal locking: */
428870ff BB	118	dsl_deadlist_t ds_deadlist;
428870ff BB	119	bplist_t ds_pending_deadlist;
34dc7c2f	120
45d1cae3 BB	121	/* to protect against multiple concurrent incremental recv */
	122	kmutex_t ds_recvlock;
	123
34dc7c2f BB	124	/* protected by lock on pool's dp_dirty_datasets list */
	125	txg_node_t ds_dirty_link;
	126	list_node_t ds_synced_link;
	127
	128	/*
	129	* ds_phys->ds_<accounting> is also protected by ds_lock.
	130	* Protected by ds_lock:
	131	*/
	132	kmutex_t ds_lock;
428870ff	133	objset_t *ds_objset;
45d1cae3	134	uint64_t ds_userrefs;
b128c09f BB	135
	136	/*
	137	* ds_owner is protected by the ds_rwlock and the ds_lock
	138	*/
	139	krwlock_t ds_rwlock;
	140	kcondvar_t ds_exclusive_cv;
	141	void *ds_owner;
34dc7c2f BB	142
	143	/* no locking; only for making guesses */
	144	uint64_t ds_trysnap_txg;
	145
	146	/* for objset_open() */
	147	kmutex_t ds_opening_lock;
	148
	149	uint64_t ds_reserved; /* cached refreservation */
	150	uint64_t ds_quota; /* cached refquota */
	151
	152	/* Protected by ds_lock; keep at end of struct for better locality */
	153	char ds_snapname[MAXNAMELEN];
	154	} dsl_dataset_t;
	155
45d1cae3 BB	156	struct dsl_ds_destroyarg {
	157	dsl_dataset_t ds; / ds to destroy */
	158	dsl_dataset_t rm_origin; / also remove our origin? */
	159	boolean_t is_origin_rm; /* set if removing origin snap */
	160	boolean_t defer; /* destroy -d requested? */
	161	boolean_t releasing; /* destroying due to release? */
	162	boolean_t need_prep; /* do we need to retry due to EBUSY? */
	163	};
	164
572e2857 BB	165	/*
	166	* The max length of a temporary tag prefix is the number of hex digits
	167	* required to express UINT64_MAX plus one for the hyphen.
	168	*/
	169	#define MAX_TAG_PREFIX_LEN 17
	170
	171	struct dsl_ds_holdarg {
	172	dsl_sync_task_group_t *dstg;
	173	char *htag;
	174	char *snapname;
	175	boolean_t recursive;
	176	boolean_t gotone;
	177	boolean_t temphold;
	178	char failed[MAXPATHLEN];
	179	};
	180
428870ff	181	#define dsl_dataset_is_snapshot(ds) \
34dc7c2f BB	182	((ds)->ds_phys->ds_num_children != 0)
	183
	184	#define DS_UNIQUE_IS_ACCURATE(ds) \
	185	(((ds)->ds_phys->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
	186
b128c09f BB	187	int dsl_dataset_hold(const char name, void tag, dsl_dataset_t **dsp);
	188	int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj,
	189	void tag, dsl_dataset_t *);
428870ff BB	190	int dsl_dataset_own(const char *name, boolean_t inconsistentok,
428870ff BB	191	void tag, dsl_dataset_t *dsp);
b128c09f	192	int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
428870ff	193	boolean_t inconsistentok, void tag, dsl_dataset_t *dsp);
34dc7c2f	194	void dsl_dataset_name(dsl_dataset_t ds, char name);
b128c09f	195	void dsl_dataset_rele(dsl_dataset_t ds, void tag);
428870ff	196	void dsl_dataset_disown(dsl_dataset_t ds, void tag);
b128c09f BB	197	void dsl_dataset_drop_ref(dsl_dataset_t ds, void tag);
b128c09f BB	198	boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, boolean_t inconsistentok,
428870ff BB	199	void *tag);
428870ff BB	200	void dsl_dataset_make_exclusive(dsl_dataset_t ds, void tag);
572e2857 BB	201	void dsl_register_onexit_hold_cleanup(dsl_dataset_t ds, const char htag,
572e2857 BB	202	minor_t minor);
b128c09f BB	203	uint64_t dsl_dataset_create_sync(dsl_dir_t pds, const char lastname,
	204	dsl_dataset_t origin, uint64_t flags, cred_t , dmu_tx_t *);
	205	uint64_t dsl_dataset_create_sync_dd(dsl_dir_t dd, dsl_dataset_t origin,
34dc7c2f	206	uint64_t flags, dmu_tx_t *tx);
45d1cae3 BB	207	int dsl_dataset_destroy(dsl_dataset_t ds, void tag, boolean_t defer);
45d1cae3 BB	208	int dsl_snapshots_destroy(char fsname, char snapname, boolean_t defer);
34dc7c2f BB	209	dsl_checkfunc_t dsl_dataset_destroy_check;
	210	dsl_syncfunc_t dsl_dataset_destroy_sync;
	211	dsl_checkfunc_t dsl_dataset_snapshot_check;
	212	dsl_syncfunc_t dsl_dataset_snapshot_sync;
572e2857	213	dsl_syncfunc_t dsl_dataset_user_hold_sync;
34dc7c2f	214	int dsl_dataset_rename(char name, const char newname, boolean_t recursive);
428870ff	215	int dsl_dataset_promote(const char name, char conflsnap);
34dc7c2f BB	216	int dsl_dataset_clone_swap(dsl_dataset_t clone, dsl_dataset_t origin_head,
34dc7c2f BB	217	boolean_t force);
45d1cae3	218	int dsl_dataset_user_hold(char dsname, char snapname, char *htag,
572e2857 BB	219	boolean_t recursive, boolean_t temphold, int cleanup_fd);
	220	int dsl_dataset_user_hold_for_send(dsl_dataset_t ds, char htag,
	221	boolean_t temphold);
45d1cae3 BB	222	int dsl_dataset_user_release(char dsname, char snapname, char *htag,
45d1cae3 BB	223	boolean_t recursive);
428870ff	224	int dsl_dataset_user_release_tmp(struct dsl_pool *dp, uint64_t dsobj,
572e2857	225	char *htag, boolean_t retry);
45d1cae3	226	int dsl_dataset_get_holds(const char dsname, nvlist_t *nvp);
34dc7c2f	227
34dc7c2f BB	228	blkptr_t dsl_dataset_get_blkptr(dsl_dataset_t ds);
	229	void dsl_dataset_set_blkptr(dsl_dataset_t ds, blkptr_t bp, dmu_tx_t *tx);
	230
	231	spa_t dsl_dataset_get_spa(dsl_dataset_t ds);
	232
	233	boolean_t dsl_dataset_modified_since_lastsnap(dsl_dataset_t *ds);
	234
	235	void dsl_dataset_sync(dsl_dataset_t os, zio_t zio, dmu_tx_t *tx);
	236
428870ff	237	void dsl_dataset_block_born(dsl_dataset_t ds, const blkptr_t bp,
34dc7c2f	238	dmu_tx_t *tx);
428870ff BB	239	int dsl_dataset_block_kill(dsl_dataset_t ds, const blkptr_t bp,
	240	dmu_tx_t *tx, boolean_t async);
	241	boolean_t dsl_dataset_block_freeable(dsl_dataset_t ds, const blkptr_t bp,
	242	uint64_t blk_birth);
34dc7c2f BB	243	uint64_t dsl_dataset_prev_snap_txg(dsl_dataset_t *ds);
	244
	245	void dsl_dataset_dirty(dsl_dataset_t ds, dmu_tx_t tx);
	246	void dsl_dataset_stats(dsl_dataset_t os, nvlist_t nv);
	247	void dsl_dataset_fast_stat(dsl_dataset_t ds, dmu_objset_stats_t stat);
	248	void dsl_dataset_space(dsl_dataset_t *ds,
	249	uint64_t refdbytesp, uint64_t availbytesp,
	250	uint64_t usedobjsp, uint64_t availobjsp);
	251	uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
	252
34dc7c2f BB	253	int dsl_dsobj_to_dsname(char pname, uint64_t obj, char buf);
	254
	255	int dsl_dataset_check_quota(dsl_dataset_t *ds, boolean_t check_quota,
	256	uint64_t asize, uint64_t inflight, uint64_t *used,
	257	uint64_t *ref_rsrv);
428870ff BB	258	int dsl_dataset_set_quota(const char *dsname, zprop_source_t source,
	259	uint64_t quota);
	260	dsl_syncfunc_t dsl_dataset_set_quota_sync;
	261	int dsl_dataset_set_reservation(const char *dsname, zprop_source_t source,
	262	uint64_t reservation);
	263
	264	int dsl_destroy_inconsistent(const char dsname, void arg);
34dc7c2f BB	265
	266	#ifdef ZFS_DEBUG
	267	#define dprintf_ds(ds, fmt, ...) do { \
	268	if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
	269	char *__ds_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); \
	270	dsl_dataset_name(ds, __ds_name); \
	271	dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
	272	kmem_free(__ds_name, MAXNAMELEN); \
	273	} \
	274	_NOTE(CONSTCOND) } while (0)
	275	#else
	276	#define dprintf_ds(dd, fmt, ...)
	277	#endif
	278
	279	#ifdef __cplusplus
	280	}
	281	#endif
	282
	283	#endif /* _SYS_DSL_DATASET_H */