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mirror_zfs/include/sys/dsl_dataset.h
Toomas Soome 921ec61b77 implicit conversion from 'boolean_t' to 'ds_hold_flags_t' 
Build error on illumos with gcc 10 did reveal:

In function 'dmu_objset_refresh_ownership':
../../common/fs/zfs/dmu_objset.c:857:25: error: implicit conversion
from 'boolean_t' to 'ds_hold_flags_t' {aka 'enum ds_hold_flags'}
[-Werror=enum-conversion]
      857 |  dsl_dataset_disown(ds, decrypt, tag);
          |                         ^~~~~~~
cc1: all warnings being treated as errors

libzfs_input_check.c: In function 'zfs_ioc_input_tests':
libzfs_input_check.c:754:28: error: implicit conversion from
'enum dmu_objset_type' to 'enum lzc_dataset_type'
[-Werror=enum-conversion]
  754 |  err = lzc_create(dataset, DMU_OST_ZFS, NULL, NULL, 0);
      |                            ^~~~~~~~~~~
cc1: all warnings being treated as errors

The same issue is present in openzfs, and also the same issue about
ds_hold_flags_t, which currently defines exactly one valid value.

Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Toomas Soome <tsoome@me.com>
Closes #11406
2021-01-05 10:30:19 -08:00

510 lines
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/*
* 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) 2011, 2018 by Delphix. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright (c) 2014 Spectra Logic Corporation, 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/zfs_refcount.h>
#include <sys/rrwlock.h>
#include <sys/dsl_crypt.h>
#include <zfeature_common.h>
#ifdef __cplusplus
extern "C" {
#endif
extern int zfs_allow_redacted_dataset_mount;
struct dsl_dataset;
struct dsl_dir;
struct dsl_pool;
struct dsl_crypto_params;
struct dsl_key_mapping;
struct zfs_bookmark_phys;
#define DS_FLAG_INCONSISTENT (1ULL<<0)
#define DS_IS_INCONSISTENT(ds) \
(dsl_dataset_phys(ds)->ds_flags & DS_FLAG_INCONSISTENT)
/*
* Do not allow this dataset to 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) \
(dsl_dataset_phys(ds)->ds_flags & DS_FLAG_DEFER_DESTROY)
/*
* DS_FIELD_* are strings that are used in the "extensified" dataset zap object.
* They should be of the format <reverse-dns>:<field>.
*/
/*
* This field's value is the object ID of a zap object which contains the
* bookmarks of this dataset. If it is present, then this dataset is counted
* in the refcount of the SPA_FEATURES_BOOKMARKS feature.
*/
#define DS_FIELD_BOOKMARK_NAMES "com.delphix:bookmarks"
/*
* This field is present (with value=0) if this dataset may contain large
* dnodes (>512B). If it is present, then this dataset is counted in the
* refcount of the SPA_FEATURE_LARGE_DNODE feature.
*/
#define DS_FIELD_LARGE_DNODE "org.zfsonlinux:large_dnode"
/*
* These fields are set on datasets that are in the middle of a resumable
* receive, and allow the sender to resume the send if it is interrupted.
*/
#define DS_FIELD_RESUME_FROMGUID "com.delphix:resume_fromguid"
#define DS_FIELD_RESUME_TONAME "com.delphix:resume_toname"
#define DS_FIELD_RESUME_TOGUID "com.delphix:resume_toguid"
#define DS_FIELD_RESUME_OBJECT "com.delphix:resume_object"
#define DS_FIELD_RESUME_OFFSET "com.delphix:resume_offset"
#define DS_FIELD_RESUME_BYTES "com.delphix:resume_bytes"
#define DS_FIELD_RESUME_LARGEBLOCK "com.delphix:resume_largeblockok"
#define DS_FIELD_RESUME_EMBEDOK "com.delphix:resume_embedok"
#define DS_FIELD_RESUME_COMPRESSOK "com.delphix:resume_compressok"
#define DS_FIELD_RESUME_RAWOK "com.datto:resume_rawok"
/*
* This field is set to the object number of the remap deadlist if one exists.
*/
#define DS_FIELD_REMAP_DEADLIST "com.delphix:remap_deadlist"
/*
* We were receiving an incremental from a redaction bookmark, and these are the
* guids of its snapshots.
*/
#define DS_FIELD_RESUME_REDACT_BOOKMARK_SNAPS \
"com.delphix:resume_redact_book_snaps"
/*
* This field is set to the ivset guid for encrypted snapshots. This is used
* for validating raw receives.
*/
#define DS_FIELD_IVSET_GUID "com.datto:ivset_guid"
/*
* 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 {
dmu_buf_user_t ds_dbu;
rrwlock_t ds_bp_rwlock; /* Protects ds_phys->ds_bp */
/* Immutable: */
struct dsl_dir *ds_dir;
dmu_buf_t *ds_dbuf;
uint64_t ds_object;
uint64_t ds_fsid_guid;
boolean_t ds_is_snapshot;
struct dsl_key_mapping *ds_key_mapping;
/* only used in syncing context, only valid for non-snapshots: */
struct dsl_dataset *ds_prev;
uint64_t ds_bookmarks_obj; /* DMU_OTN_ZAP_METADATA */
avl_tree_t ds_bookmarks; /* dsl_bookmark_node_t */
/* has internal locking: */
dsl_deadlist_t ds_deadlist;
bplist_t ds_pending_deadlist;
/*
* The remap deadlist contains blocks (DVA's, really) that are
* referenced by the previous snapshot and point to indirect vdevs,
* but in this dataset they have been remapped to point to concrete
* (or at least, less-indirect) vdevs. In other words, the
* physical DVA is referenced by the previous snapshot but not by
* this dataset. Logically, the DVA continues to be referenced,
* but we are using a different (less indirect) physical DVA.
* This deadlist is used to determine when physical DVAs that
* point to indirect vdevs are no longer referenced anywhere,
* and thus should be marked obsolete.
*
* This is only used if SPA_FEATURE_OBSOLETE_COUNTS is enabled.
*/
dsl_deadlist_t ds_remap_deadlist;
/* protects creation of the ds_remap_deadlist */
kmutex_t ds_remap_deadlist_lock;
/* 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.
*/
zfs_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;
/*
* When in the middle of a resumable receive, tracks how much
* progress we have made.
*/
uint64_t ds_resume_object[TXG_SIZE];
uint64_t ds_resume_offset[TXG_SIZE];
uint64_t ds_resume_bytes[TXG_SIZE];
/* Protected by our dsl_dir's dd_lock */
list_t ds_prop_cbs;
/*
* For ZFEATURE_FLAG_PER_DATASET features, set if this dataset
* uses this feature.
*/
void *ds_feature[SPA_FEATURES];
/*
* Set if we need to activate the feature on this dataset this txg
* (used only in syncing context).
*/
void *ds_feature_activation[SPA_FEATURES];
/* Protected by ds_lock; keep at end of struct for better locality */
char ds_snapname[ZFS_MAX_DATASET_NAME_LEN];
} dsl_dataset_t;
static inline dsl_dataset_phys_t *
dsl_dataset_phys(dsl_dataset_t *ds)
{
return ((dsl_dataset_phys_t *)ds->ds_dbuf->db_data);
}
typedef struct dsl_dataset_promote_arg {
const char *ddpa_clonename;
dsl_dataset_t *ddpa_clone;
list_t shared_snaps, origin_snaps, clone_snaps;
dsl_dataset_t *origin_origin; /* origin of the origin */
uint64_t used, comp, uncomp, unique, cloneusedsnap, originusedsnap;
nvlist_t *err_ds;
cred_t *cr;
proc_t *proc;
} dsl_dataset_promote_arg_t;
typedef struct dsl_dataset_rollback_arg {
const char *ddra_fsname;
const char *ddra_tosnap;
void *ddra_owner;
nvlist_t *ddra_result;
} dsl_dataset_rollback_arg_t;
typedef struct dsl_dataset_snapshot_arg {
nvlist_t *ddsa_snaps;
nvlist_t *ddsa_props;
nvlist_t *ddsa_errors;
cred_t *ddsa_cr;
proc_t *ddsa_proc;
} dsl_dataset_snapshot_arg_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) \
(dsl_dataset_phys(ds)->ds_num_children != 0)
#define DS_UNIQUE_IS_ACCURATE(ds) \
((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
/* flags for holding the dataset */
typedef enum ds_hold_flags {
DS_HOLD_FLAG_NONE = 0 << 0,
DS_HOLD_FLAG_DECRYPT = 1 << 0 /* needs access to encrypted data */
} ds_hold_flags_t;
int dsl_dataset_hold(struct dsl_pool *dp, const char *name, void *tag,
dsl_dataset_t **dsp);
int dsl_dataset_hold_flags(struct dsl_pool *dp, const char *name,
ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds,
void *tag);
int dsl_dataset_create_key_mapping(dsl_dataset_t *ds);
int dsl_dataset_hold_obj_flags(struct dsl_pool *dp, uint64_t dsobj,
ds_hold_flags_t flags, void *tag, dsl_dataset_t **);
void dsl_dataset_remove_key_mapping(dsl_dataset_t *ds);
int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj,
void *tag, dsl_dataset_t **);
void dsl_dataset_rele_flags(dsl_dataset_t *ds, ds_hold_flags_t flags,
void *tag);
void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
int dsl_dataset_own(struct dsl_pool *dp, const char *name,
ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
int dsl_dataset_own_force(struct dsl_pool *dp, const char *name,
ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
int dsl_dataset_own_obj(struct dsl_pool *dp, uint64_t dsobj,
ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
int dsl_dataset_own_obj_force(struct dsl_pool *dp, uint64_t dsobj,
ds_hold_flags_t flags, void *tag, dsl_dataset_t **dsp);
void dsl_dataset_disown(dsl_dataset_t *ds, ds_hold_flags_t flags, void *tag);
void dsl_dataset_name(dsl_dataset_t *ds, char *name);
boolean_t dsl_dataset_tryown(dsl_dataset_t *ds, void *tag, boolean_t override);
int dsl_dataset_namelen(dsl_dataset_t *ds);
boolean_t dsl_dataset_has_owner(dsl_dataset_t *ds);
uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const char *lastname,
dsl_dataset_t *origin, uint64_t flags, cred_t *,
struct dsl_crypto_params *, dmu_tx_t *);
uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin,
struct dsl_crypto_params *dcp, uint64_t flags, dmu_tx_t *tx);
void dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx);
int dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx);
int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors);
void dsl_dataset_promote_sync(void *arg, dmu_tx_t *tx);
int dsl_dataset_promote_check(void *arg, dmu_tx_t *tx);
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);
spa_t *dsl_dataset_get_spa(dsl_dataset_t *ds);
boolean_t dsl_dataset_modified_since_snap(dsl_dataset_t *ds,
dsl_dataset_t *snap);
void dsl_dataset_sync(dsl_dataset_t *ds, zio_t *zio, dmu_tx_t *tx);
void dsl_dataset_sync_done(dsl_dataset_t *ds, 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);
void dsl_dataset_block_remapped(dsl_dataset_t *ds, uint64_t vdev,
uint64_t offset, uint64_t size, uint64_t birth, dmu_tx_t *tx);
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);
int get_clones_stat_impl(dsl_dataset_t *ds, nvlist_t *val);
char *get_receive_resume_stats_impl(dsl_dataset_t *ds);
char *get_child_receive_stats(dsl_dataset_t *ds);
uint64_t dsl_get_refratio(dsl_dataset_t *ds);
uint64_t dsl_get_logicalreferenced(dsl_dataset_t *ds);
uint64_t dsl_get_compressratio(dsl_dataset_t *ds);
uint64_t dsl_get_used(dsl_dataset_t *ds);
uint64_t dsl_get_creation(dsl_dataset_t *ds);
uint64_t dsl_get_creationtxg(dsl_dataset_t *ds);
uint64_t dsl_get_refquota(dsl_dataset_t *ds);
uint64_t dsl_get_refreservation(dsl_dataset_t *ds);
uint64_t dsl_get_guid(dsl_dataset_t *ds);
uint64_t dsl_get_unique(dsl_dataset_t *ds);
uint64_t dsl_get_objsetid(dsl_dataset_t *ds);
uint64_t dsl_get_userrefs(dsl_dataset_t *ds);
uint64_t dsl_get_defer_destroy(dsl_dataset_t *ds);
uint64_t dsl_get_referenced(dsl_dataset_t *ds);
uint64_t dsl_get_numclones(dsl_dataset_t *ds);
uint64_t dsl_get_inconsistent(dsl_dataset_t *ds);
uint64_t dsl_get_redacted(dsl_dataset_t *ds);
uint64_t dsl_get_available(dsl_dataset_t *ds);
int dsl_get_written(dsl_dataset_t *ds, uint64_t *written);
int dsl_get_prev_snap(dsl_dataset_t *ds, char *snap);
void dsl_get_redact_snaps(dsl_dataset_t *ds, nvlist_t *propval);
int dsl_get_mountpoint(dsl_dataset_t *ds, const char *dsname, char *value,
char *source);
void get_clones_stat(dsl_dataset_t *ds, nvlist_t *nv);
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 *newds,
uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
int dsl_dataset_space_written_bookmark(struct zfs_bookmark_phys *bmp,
dsl_dataset_t *newds, 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);
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);
int dsl_dataset_set_compression(const char *dsname, zprop_source_t source,
uint64_t compression);
boolean_t dsl_dataset_is_before(dsl_dataset_t *later, dsl_dataset_t *earlier,
uint64_t earlier_txg);
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 *owner, dmu_tx_t *tx);
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, boolean_t recv, uint64_t cnt, cred_t *cr, proc_t *proc);
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,
boolean_t adj_cnt);
void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
zprop_source_t source, uint64_t value, dmu_tx_t *tx);
void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx);
boolean_t dsl_dataset_is_zapified(dsl_dataset_t *ds);
boolean_t dsl_dataset_has_resume_receive_state(dsl_dataset_t *ds);
int dsl_dataset_rollback_check(void *arg, dmu_tx_t *tx);
void dsl_dataset_rollback_sync(void *arg, dmu_tx_t *tx);
int dsl_dataset_rollback(const char *fsname, const char *tosnap, void *owner,
nvlist_t *result);
uint64_t dsl_dataset_get_remap_deadlist_object(dsl_dataset_t *ds);
void dsl_dataset_create_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
boolean_t dsl_dataset_remap_deadlist_exists(dsl_dataset_t *ds);
void dsl_dataset_destroy_remap_deadlist(dsl_dataset_t *ds, dmu_tx_t *tx);
void dsl_dataset_activate_feature(uint64_t dsobj, spa_feature_t f, void *arg,
dmu_tx_t *tx);
void dsl_dataset_deactivate_feature(dsl_dataset_t *ds, spa_feature_t f,
dmu_tx_t *tx);
boolean_t dsl_dataset_feature_is_active(dsl_dataset_t *ds, spa_feature_t f);
boolean_t dsl_dataset_get_uint64_array_feature(dsl_dataset_t *ds,
spa_feature_t f, uint64_t *outlength, uint64_t **outp);
void dsl_dataset_activate_redaction(dsl_dataset_t *ds, uint64_t *redact_snaps,
uint64_t num_redact_snaps, dmu_tx_t *tx);
#ifdef ZFS_DEBUG
#define dprintf_ds(ds, fmt, ...) do { \
if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \
dsl_dataset_name(ds, __ds_name); \
dprintf("ds=%s " fmt, __ds_name, __VA_ARGS__); \
kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \
} \
_NOTE(CONSTCOND) } while (0)
#else
#define dprintf_ds(dd, fmt, ...)
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DSL_DATASET_H */
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