/* * 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, 2016 by Delphix. All rights reserved. * Copyright (c) 2014, Joyent, Inc. All rights reserved. * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. */ #ifndef _SYS_DSL_DIR_H #define _SYS_DSL_DIR_H #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif struct dsl_dataset; /* * DD_FIELD_* are strings that are used in the "extensified" dsl_dir zap object. * They should be of the format :. */ #define DD_FIELD_FILESYSTEM_COUNT "com.joyent:filesystem_count" #define DD_FIELD_SNAPSHOT_COUNT "com.joyent:snapshot_count" #define DD_FIELD_LAST_REMAP_TXG "com.delphix:last_remap_txg" #define DD_FIELD_CRYPTO_KEY_OBJ "com.datto:crypto_key_obj" #define DD_FIELD_LAST_REMAP_TXG "com.delphix:last_remap_txg" typedef enum dd_used { DD_USED_HEAD, DD_USED_SNAP, DD_USED_CHILD, DD_USED_CHILD_RSRV, DD_USED_REFRSRV, DD_USED_NUM } dd_used_t; #define DD_FLAG_USED_BREAKDOWN (1<<0) typedef struct dsl_dir_phys { uint64_t dd_creation_time; /* not actually used */ uint64_t dd_head_dataset_obj; uint64_t dd_parent_obj; uint64_t dd_origin_obj; uint64_t dd_child_dir_zapobj; /* * how much space our children are accounting for; for leaf * datasets, == physical space used by fs + snaps */ uint64_t dd_used_bytes; uint64_t dd_compressed_bytes; uint64_t dd_uncompressed_bytes; /* Administrative quota setting */ uint64_t dd_quota; /* Administrative reservation setting */ uint64_t dd_reserved; uint64_t dd_props_zapobj; uint64_t dd_deleg_zapobj; /* dataset delegation permissions */ uint64_t dd_flags; uint64_t dd_used_breakdown[DD_USED_NUM]; uint64_t dd_clones; /* dsl_dir objects */ uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */ } dsl_dir_phys_t; struct dsl_dir { dmu_buf_user_t dd_dbu; /* These are immutable; no lock needed: */ uint64_t dd_object; uint64_t dd_crypto_obj; dsl_pool_t *dd_pool; /* Stable until user eviction; no lock needed: */ dmu_buf_t *dd_dbuf; /* protected by lock on pool's dp_dirty_dirs list */ txg_node_t dd_dirty_link; /* protected by dp_config_rwlock */ dsl_dir_t *dd_parent; /* Protected by dd_lock */ kmutex_t dd_lock; list_t dd_props; /* list of dsl_prop_record_t's */ timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */ uint64_t dd_origin_txg; /* gross estimate of space used by in-flight tx's */ uint64_t dd_tempreserved[TXG_SIZE]; /* amount of space we expect to write; == amount of dirty data */ int64_t dd_space_towrite[TXG_SIZE]; /* protected by dd_lock; keep at end of struct for better locality */ char dd_myname[ZFS_MAX_DATASET_NAME_LEN]; }; static inline dsl_dir_phys_t * dsl_dir_phys(dsl_dir_t *dd) { return (dd->dd_dbuf->db_data); } void dsl_dir_rele(dsl_dir_t *dd, void *tag); void dsl_dir_async_rele(dsl_dir_t *dd, void *tag); int dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag, dsl_dir_t **, const char **tail); int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj, const char *tail, void *tag, dsl_dir_t **); void dsl_dir_name(dsl_dir_t *dd, char *buf); int dsl_dir_namelen(dsl_dir_t *dd); uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds, const char *name, dmu_tx_t *tx); uint64_t dsl_dir_get_used(dsl_dir_t *dd); uint64_t dsl_dir_get_quota(dsl_dir_t *dd); uint64_t dsl_dir_get_reservation(dsl_dir_t *dd); uint64_t dsl_dir_get_compressratio(dsl_dir_t *dd); uint64_t dsl_dir_get_logicalused(dsl_dir_t *dd); uint64_t dsl_dir_get_usedsnap(dsl_dir_t *dd); uint64_t dsl_dir_get_usedds(dsl_dir_t *dd); uint64_t dsl_dir_get_usedrefreserv(dsl_dir_t *dd); uint64_t dsl_dir_get_usedchild(dsl_dir_t *dd); void dsl_dir_get_origin(dsl_dir_t *dd, char *buf); int dsl_dir_get_filesystem_count(dsl_dir_t *dd, uint64_t *count); int dsl_dir_get_snapshot_count(dsl_dir_t *dd, uint64_t *count); void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv); uint64_t dsl_dir_space_available(dsl_dir_t *dd, dsl_dir_t *ancestor, int64_t delta, int ondiskonly); void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx); int dsl_dir_get_remaptxg(dsl_dir_t *dd, uint64_t *count); void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx); int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem, uint64_t asize, boolean_t netfree, void **tr_cookiep, dmu_tx_t *tx); void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx); void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx); void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type, int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx); void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta, dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx); int dsl_dir_set_quota(const char *ddname, zprop_source_t source, uint64_t quota); int dsl_dir_set_reservation(const char *ddname, zprop_source_t source, uint64_t reservation); int dsl_dir_activate_fs_ss_limit(const char *); int dsl_fs_ss_limit_check(dsl_dir_t *, uint64_t, zfs_prop_t, dsl_dir_t *, cred_t *); void dsl_fs_ss_count_adjust(dsl_dir_t *, int64_t, const char *, dmu_tx_t *); int dsl_dir_update_last_remap_txg(dsl_dir_t *, uint64_t); int dsl_dir_rename(const char *oldname, const char *newname); int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, uint64_t fs_cnt, uint64_t ss_cnt, uint64_t space, cred_t *); boolean_t dsl_dir_is_clone(dsl_dir_t *dd); void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds, uint64_t reservation, cred_t *cr, dmu_tx_t *tx); void dsl_dir_snap_cmtime_update(dsl_dir_t *dd); timestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd); void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value, dmu_tx_t *tx); void dsl_dir_zapify(dsl_dir_t *dd, dmu_tx_t *tx); boolean_t dsl_dir_is_zapified(dsl_dir_t *dd); /* internal reserved dir name */ #define MOS_DIR_NAME "$MOS" #define ORIGIN_DIR_NAME "$ORIGIN" #define FREE_DIR_NAME "$FREE" #define LEAK_DIR_NAME "$LEAK" #ifdef ZFS_DEBUG #define dprintf_dd(dd, fmt, ...) do { \ if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \ dsl_dir_name(dd, __ds_name); \ dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \ kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \ } \ _NOTE(CONSTCOND) } while (0) #else #define dprintf_dd(dd, fmt, ...) #endif #ifdef __cplusplus } #endif #endif /* _SYS_DSL_DIR_H */