1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 223f9d6ad7SLin Ling * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 2369962b56SMatthew Ahrens * Copyright (c) 2013 by Delphix. All rights reserved. 24a2afb611SJerry Jelinek * Copyright (c) 2014, Joyent, Inc. All rights reserved. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #ifndef _SYS_DSL_DIR_H 28fa9e4066Sahrens #define _SYS_DSL_DIR_H 29fa9e4066Sahrens 30fa9e4066Sahrens #include <sys/dmu.h> 31fa9e4066Sahrens #include <sys/dsl_pool.h> 321d452cf5Sahrens #include <sys/dsl_synctask.h> 33fa9e4066Sahrens #include <sys/refcount.h> 34fa9e4066Sahrens #include <sys/zfs_context.h> 35fa9e4066Sahrens 36fa9e4066Sahrens #ifdef __cplusplus 37fa9e4066Sahrens extern "C" { 38fa9e4066Sahrens #endif 39fa9e4066Sahrens 40fa9e4066Sahrens struct dsl_dataset; 41fa9e4066Sahrens 42a2afb611SJerry Jelinek /* 43a2afb611SJerry Jelinek * DD_FIELD_* are strings that are used in the "extensified" dsl_dir zap object. 44a2afb611SJerry Jelinek * They should be of the format <reverse-dns>:<field>. 45a2afb611SJerry Jelinek */ 46a2afb611SJerry Jelinek 47a2afb611SJerry Jelinek #define DD_FIELD_FILESYSTEM_COUNT "com.joyent:filesystem_count" 48a2afb611SJerry Jelinek #define DD_FIELD_SNAPSHOT_COUNT "com.joyent:snapshot_count" 49a2afb611SJerry Jelinek 5074e7dc98SMatthew Ahrens typedef enum dd_used { 5174e7dc98SMatthew Ahrens DD_USED_HEAD, 5274e7dc98SMatthew Ahrens DD_USED_SNAP, 5374e7dc98SMatthew Ahrens DD_USED_CHILD, 5474e7dc98SMatthew Ahrens DD_USED_CHILD_RSRV, 5574e7dc98SMatthew Ahrens DD_USED_REFRSRV, 5674e7dc98SMatthew Ahrens DD_USED_NUM 5774e7dc98SMatthew Ahrens } dd_used_t; 5874e7dc98SMatthew Ahrens 5974e7dc98SMatthew Ahrens #define DD_FLAG_USED_BREAKDOWN (1<<0) 6074e7dc98SMatthew Ahrens 61fa9e4066Sahrens typedef struct dsl_dir_phys { 62a2eea2e1Sahrens uint64_t dd_creation_time; /* not actually used */ 63fa9e4066Sahrens uint64_t dd_head_dataset_obj; 64fa9e4066Sahrens uint64_t dd_parent_obj; 653cb34c60Sahrens uint64_t dd_origin_obj; 66fa9e4066Sahrens uint64_t dd_child_dir_zapobj; 67fa9e4066Sahrens /* 68fa9e4066Sahrens * how much space our children are accounting for; for leaf 69fa9e4066Sahrens * datasets, == physical space used by fs + snaps 70fa9e4066Sahrens */ 71fa9e4066Sahrens uint64_t dd_used_bytes; 72fa9e4066Sahrens uint64_t dd_compressed_bytes; 73fa9e4066Sahrens uint64_t dd_uncompressed_bytes; 74fa9e4066Sahrens /* Administrative quota setting */ 75fa9e4066Sahrens uint64_t dd_quota; 76fa9e4066Sahrens /* Administrative reservation setting */ 77fa9e4066Sahrens uint64_t dd_reserved; 78fa9e4066Sahrens uint64_t dd_props_zapobj; 79ecd6cf80Smarks uint64_t dd_deleg_zapobj; /* dataset delegation permissions */ 8074e7dc98SMatthew Ahrens uint64_t dd_flags; 8174e7dc98SMatthew Ahrens uint64_t dd_used_breakdown[DD_USED_NUM]; 82cde58dbcSMatthew Ahrens uint64_t dd_clones; /* dsl_dir objects */ 83cde58dbcSMatthew Ahrens uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */ 84fa9e4066Sahrens } dsl_dir_phys_t; 85fa9e4066Sahrens 86fa9e4066Sahrens struct dsl_dir { 87fa9e4066Sahrens /* These are immutable; no lock needed: */ 88fa9e4066Sahrens uint64_t dd_object; 89fa9e4066Sahrens dsl_pool_t *dd_pool; 90fa9e4066Sahrens 91*c1379625SJustin T. Gibbs /* Stable until user eviction; no lock needed: */ 92*c1379625SJustin T. Gibbs dmu_buf_t *dd_dbuf; 93*c1379625SJustin T. Gibbs 94fa9e4066Sahrens /* protected by lock on pool's dp_dirty_dirs list */ 95fa9e4066Sahrens txg_node_t dd_dirty_link; 96fa9e4066Sahrens 97fa9e4066Sahrens /* protected by dp_config_rwlock */ 98fa9e4066Sahrens dsl_dir_t *dd_parent; 99fa9e4066Sahrens 100fa9e4066Sahrens /* Protected by dd_lock */ 101fa9e4066Sahrens kmutex_t dd_lock; 102fa9e4066Sahrens list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */ 10371eb0538SChris Kirby timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */ 1043f9d6ad7SLin Ling uint64_t dd_origin_txg; 105fa9e4066Sahrens 106fa9e4066Sahrens /* gross estimate of space used by in-flight tx's */ 107fa9e4066Sahrens uint64_t dd_tempreserved[TXG_SIZE]; 108fa9e4066Sahrens /* amount of space we expect to write; == amount of dirty data */ 109fa9e4066Sahrens int64_t dd_space_towrite[TXG_SIZE]; 110fa9e4066Sahrens 111fa9e4066Sahrens /* protected by dd_lock; keep at end of struct for better locality */ 112fa9e4066Sahrens char dd_myname[MAXNAMELEN]; 113fa9e4066Sahrens }; 114fa9e4066Sahrens 115*c1379625SJustin T. Gibbs inline dsl_dir_phys_t * 116*c1379625SJustin T. Gibbs dsl_dir_phys(dsl_dir_t *dd) 117*c1379625SJustin T. Gibbs { 118*c1379625SJustin T. Gibbs return (dd->dd_dbuf->db_data); 119*c1379625SJustin T. Gibbs } 120*c1379625SJustin T. Gibbs 1213b2aab18SMatthew Ahrens void dsl_dir_rele(dsl_dir_t *dd, void *tag); 1223b2aab18SMatthew Ahrens int dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag, 1233b2aab18SMatthew Ahrens dsl_dir_t **, const char **tail); 1243b2aab18SMatthew Ahrens int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj, 125ea8dc4b6Seschrock const char *tail, void *tag, dsl_dir_t **); 126fa9e4066Sahrens void dsl_dir_name(dsl_dir_t *dd, char *buf); 127b7661cccSmmusante int dsl_dir_namelen(dsl_dir_t *dd); 128088f3894Sahrens uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds, 129088f3894Sahrens const char *name, dmu_tx_t *tx); 130a2eea2e1Sahrens void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv); 131a2eea2e1Sahrens uint64_t dsl_dir_space_available(dsl_dir_t *dd, 132a2eea2e1Sahrens dsl_dir_t *ancestor, int64_t delta, int ondiskonly); 133fa9e4066Sahrens void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx); 134fa9e4066Sahrens void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx); 135fa9e4066Sahrens int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem, 136a9799022Sck uint64_t asize, uint64_t fsize, uint64_t usize, void **tr_cookiep, 137a9799022Sck dmu_tx_t *tx); 138fa9e4066Sahrens void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx); 139fa9e4066Sahrens void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx); 14074e7dc98SMatthew Ahrens void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type, 141fa9e4066Sahrens int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx); 14274e7dc98SMatthew Ahrens void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta, 14374e7dc98SMatthew Ahrens dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx); 14492241e0bSTom Erickson int dsl_dir_set_quota(const char *ddname, zprop_source_t source, 14592241e0bSTom Erickson uint64_t quota); 14692241e0bSTom Erickson int dsl_dir_set_reservation(const char *ddname, zprop_source_t source, 14792241e0bSTom Erickson uint64_t reservation); 148a2afb611SJerry Jelinek int dsl_dir_activate_fs_ss_limit(const char *); 149a2afb611SJerry Jelinek int dsl_fs_ss_limit_check(dsl_dir_t *, uint64_t, zfs_prop_t, dsl_dir_t *, 150a2afb611SJerry Jelinek cred_t *); 151a2afb611SJerry Jelinek void dsl_fs_ss_count_adjust(dsl_dir_t *, int64_t, const char *, dmu_tx_t *); 1523b2aab18SMatthew Ahrens int dsl_dir_rename(const char *oldname, const char *newname); 153a2afb611SJerry Jelinek int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, 154a2afb611SJerry Jelinek uint64_t fs_cnt, uint64_t ss_cnt, uint64_t space, cred_t *); 155088f3894Sahrens boolean_t dsl_dir_is_clone(dsl_dir_t *dd); 1560b383af7SChris Kirby void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds, 1570b383af7SChris Kirby uint64_t reservation, cred_t *cr, dmu_tx_t *tx); 15871eb0538SChris Kirby void dsl_dir_snap_cmtime_update(dsl_dir_t *dd); 15971eb0538SChris Kirby timestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd); 1603b2aab18SMatthew Ahrens void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value, 1613b2aab18SMatthew Ahrens dmu_tx_t *tx); 162a2afb611SJerry Jelinek void dsl_dir_zapify(dsl_dir_t *dd, dmu_tx_t *tx); 163a2afb611SJerry Jelinek boolean_t dsl_dir_is_zapified(dsl_dir_t *dd); 164fa9e4066Sahrens 16515f66a7fSek /* internal reserved dir name */ 16615f66a7fSek #define MOS_DIR_NAME "$MOS" 167088f3894Sahrens #define ORIGIN_DIR_NAME "$ORIGIN" 1683f9d6ad7SLin Ling #define XLATION_DIR_NAME "$XLATION" 169cde58dbcSMatthew Ahrens #define FREE_DIR_NAME "$FREE" 1707fd05ac4SMatthew Ahrens #define LEAK_DIR_NAME "$LEAK" 17115f66a7fSek 172fa9e4066Sahrens #ifdef ZFS_DEBUG 173fa9e4066Sahrens #define dprintf_dd(dd, fmt, ...) do { \ 174fa9e4066Sahrens if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 17515f66a7fSek char *__ds_name = kmem_alloc(MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, \ 17615f66a7fSek KM_SLEEP); \ 177fa9e4066Sahrens dsl_dir_name(dd, __ds_name); \ 178fa9e4066Sahrens dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \ 17915f66a7fSek kmem_free(__ds_name, MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); \ 180fa9e4066Sahrens } \ 181fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 182fa9e4066Sahrens #else 183fa9e4066Sahrens #define dprintf_dd(dd, fmt, ...) 184fa9e4066Sahrens #endif 185fa9e4066Sahrens 186fa9e4066Sahrens #ifdef __cplusplus 187fa9e4066Sahrens } 188fa9e4066Sahrens #endif 189fa9e4066Sahrens 190fa9e4066Sahrens #endif /* _SYS_DSL_DIR_H */ 191