1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5168404Spjd * Common Development and Distribution License (the "License"). 6168404Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd/* 22219089Spjd * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23260763Savg * Copyright (c) 2013 by Delphix. All rights reserved. 24265744Sdelphij * Copyright (c) 2014, Joyent, Inc. All rights reserved. 25288549Smav * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 26168404Spjd */ 27168404Spjd 28168404Spjd#ifndef _SYS_DSL_DIR_H 29168404Spjd#define _SYS_DSL_DIR_H 30168404Spjd 31168404Spjd#include <sys/dmu.h> 32168404Spjd#include <sys/dsl_pool.h> 33168404Spjd#include <sys/dsl_synctask.h> 34168404Spjd#include <sys/refcount.h> 35168404Spjd#include <sys/zfs_context.h> 36168404Spjd 37168404Spjd#ifdef __cplusplus 38168404Spjdextern "C" { 39168404Spjd#endif 40168404Spjd 41168404Spjdstruct dsl_dataset; 42168404Spjd 43265744Sdelphij/* 44265744Sdelphij * DD_FIELD_* are strings that are used in the "extensified" dsl_dir zap object. 45265744Sdelphij * They should be of the format <reverse-dns>:<field>. 46265744Sdelphij */ 47265744Sdelphij 48265744Sdelphij#define DD_FIELD_FILESYSTEM_COUNT "com.joyent:filesystem_count" 49265744Sdelphij#define DD_FIELD_SNAPSHOT_COUNT "com.joyent:snapshot_count" 50265744Sdelphij 51185029Spjdtypedef enum dd_used { 52185029Spjd DD_USED_HEAD, 53185029Spjd DD_USED_SNAP, 54185029Spjd DD_USED_CHILD, 55185029Spjd DD_USED_CHILD_RSRV, 56185029Spjd DD_USED_REFRSRV, 57185029Spjd DD_USED_NUM 58185029Spjd} dd_used_t; 59185029Spjd 60185029Spjd#define DD_FLAG_USED_BREAKDOWN (1<<0) 61185029Spjd 62168404Spjdtypedef struct dsl_dir_phys { 63168404Spjd uint64_t dd_creation_time; /* not actually used */ 64168404Spjd uint64_t dd_head_dataset_obj; 65168404Spjd uint64_t dd_parent_obj; 66185029Spjd uint64_t dd_origin_obj; 67168404Spjd uint64_t dd_child_dir_zapobj; 68168404Spjd /* 69168404Spjd * how much space our children are accounting for; for leaf 70168404Spjd * datasets, == physical space used by fs + snaps 71168404Spjd */ 72168404Spjd uint64_t dd_used_bytes; 73168404Spjd uint64_t dd_compressed_bytes; 74168404Spjd uint64_t dd_uncompressed_bytes; 75168404Spjd /* Administrative quota setting */ 76168404Spjd uint64_t dd_quota; 77168404Spjd /* Administrative reservation setting */ 78168404Spjd uint64_t dd_reserved; 79168404Spjd uint64_t dd_props_zapobj; 80185029Spjd uint64_t dd_deleg_zapobj; /* dataset delegation permissions */ 81185029Spjd uint64_t dd_flags; 82185029Spjd uint64_t dd_used_breakdown[DD_USED_NUM]; 83219089Spjd uint64_t dd_clones; /* dsl_dir objects */ 84219089Spjd uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */ 85168404Spjd} dsl_dir_phys_t; 86168404Spjd 87168404Spjdstruct dsl_dir { 88288549Smav dmu_buf_user_t dd_dbu; 89288549Smav 90168404Spjd /* These are immutable; no lock needed: */ 91168404Spjd uint64_t dd_object; 92168404Spjd dsl_pool_t *dd_pool; 93168404Spjd 94277585Sdelphij /* Stable until user eviction; no lock needed: */ 95277585Sdelphij dmu_buf_t *dd_dbuf; 96277585Sdelphij 97168404Spjd /* protected by lock on pool's dp_dirty_dirs list */ 98168404Spjd txg_node_t dd_dirty_link; 99168404Spjd 100168404Spjd /* protected by dp_config_rwlock */ 101168404Spjd dsl_dir_t *dd_parent; 102168404Spjd 103168404Spjd /* Protected by dd_lock */ 104168404Spjd kmutex_t dd_lock; 105289100Sdelphij list_t dd_props; /* list of dsl_prop_record_t's */ 106219089Spjd timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */ 107219089Spjd uint64_t dd_origin_txg; 108168404Spjd 109168404Spjd /* gross estimate of space used by in-flight tx's */ 110168404Spjd uint64_t dd_tempreserved[TXG_SIZE]; 111168404Spjd /* amount of space we expect to write; == amount of dirty data */ 112168404Spjd int64_t dd_space_towrite[TXG_SIZE]; 113168404Spjd 114168404Spjd /* protected by dd_lock; keep at end of struct for better locality */ 115307122Smav char dd_myname[ZFS_MAX_DATASET_NAME_LEN]; 116168404Spjd}; 117168404Spjd 118277585Sdelphijinline dsl_dir_phys_t * 119277585Sdelphijdsl_dir_phys(dsl_dir_t *dd) 120277585Sdelphij{ 121277585Sdelphij return (dd->dd_dbuf->db_data); 122277585Sdelphij} 123277585Sdelphij 124248571Smmvoid dsl_dir_rele(dsl_dir_t *dd, void *tag); 125288549Smavvoid dsl_dir_async_rele(dsl_dir_t *dd, void *tag); 126248571Smmint dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag, 127248571Smm dsl_dir_t **, const char **tail); 128248571Smmint dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj, 129168404Spjd const char *tail, void *tag, dsl_dir_t **); 130168404Spjdvoid dsl_dir_name(dsl_dir_t *dd, char *buf); 131168498Spjdint dsl_dir_namelen(dsl_dir_t *dd); 132185029Spjduint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds, 133185029Spjd const char *name, dmu_tx_t *tx); 134168404Spjdvoid dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv); 135168404Spjduint64_t dsl_dir_space_available(dsl_dir_t *dd, 136168404Spjd dsl_dir_t *ancestor, int64_t delta, int ondiskonly); 137168404Spjdvoid dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx); 138168404Spjdvoid dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx); 139168404Spjdint dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem, 140185029Spjd uint64_t asize, uint64_t fsize, uint64_t usize, void **tr_cookiep, 141185029Spjd dmu_tx_t *tx); 142168404Spjdvoid dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx); 143168404Spjdvoid dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx); 144185029Spjdvoid dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type, 145168404Spjd int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx); 146185029Spjdvoid dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta, 147185029Spjd dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx); 148219089Spjdint dsl_dir_set_quota(const char *ddname, zprop_source_t source, 149219089Spjd uint64_t quota); 150219089Spjdint dsl_dir_set_reservation(const char *ddname, zprop_source_t source, 151219089Spjd uint64_t reservation); 152265744Sdelphijint dsl_dir_activate_fs_ss_limit(const char *); 153265744Sdelphijint dsl_fs_ss_limit_check(dsl_dir_t *, uint64_t, zfs_prop_t, dsl_dir_t *, 154265744Sdelphij cred_t *); 155265744Sdelphijvoid dsl_fs_ss_count_adjust(dsl_dir_t *, int64_t, const char *, dmu_tx_t *); 156248571Smmint dsl_dir_rename(const char *oldname, const char *newname); 157265744Sdelphijint dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, 158265744Sdelphij uint64_t fs_cnt, uint64_t ss_cnt, uint64_t space, cred_t *); 159185029Spjdboolean_t dsl_dir_is_clone(dsl_dir_t *dd); 160185029Spjdvoid dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds, 161185029Spjd uint64_t reservation, cred_t *cr, dmu_tx_t *tx); 162219089Spjdvoid dsl_dir_snap_cmtime_update(dsl_dir_t *dd); 163219089Spjdtimestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd); 164248571Smmvoid dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value, 165248571Smm dmu_tx_t *tx); 166265744Sdelphijvoid dsl_dir_zapify(dsl_dir_t *dd, dmu_tx_t *tx); 167265744Sdelphijboolean_t dsl_dir_is_zapified(dsl_dir_t *dd); 168168404Spjd 169168404Spjd/* internal reserved dir name */ 170168404Spjd#define MOS_DIR_NAME "$MOS" 171185029Spjd#define ORIGIN_DIR_NAME "$ORIGIN" 172219089Spjd#define XLATION_DIR_NAME "$XLATION" 173219089Spjd#define FREE_DIR_NAME "$FREE" 174268650Sdelphij#define LEAK_DIR_NAME "$LEAK" 175168404Spjd 176168404Spjd#ifdef ZFS_DEBUG 177168404Spjd#define dprintf_dd(dd, fmt, ...) do { \ 178168404Spjd if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 179307122Smav char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \ 180168404Spjd dsl_dir_name(dd, __ds_name); \ 181168404Spjd dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \ 182307122Smav kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \ 183168404Spjd } \ 184168404Spjd_NOTE(CONSTCOND) } while (0) 185168404Spjd#else 186168404Spjd#define dprintf_dd(dd, fmt, ...) 187168404Spjd#endif 188168404Spjd 189168404Spjd#ifdef __cplusplus 190168404Spjd} 191168404Spjd#endif 192168404Spjd 193168404Spjd#endif /* _SYS_DSL_DIR_H */ 194