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 /* 22ea8dc4b6Seschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23fa9e4066Sahrens * Use is subject to license terms. 24fa9e4066Sahrens */ 25fa9e4066Sahrens 26fa9e4066Sahrens #ifndef _SYS_DSL_DIR_H 27fa9e4066Sahrens #define _SYS_DSL_DIR_H 28fa9e4066Sahrens 29fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 30fa9e4066Sahrens 31fa9e4066Sahrens #include <sys/dmu.h> 32fa9e4066Sahrens #include <sys/dsl_pool.h> 331d452cf5Sahrens #include <sys/dsl_synctask.h> 34fa9e4066Sahrens #include <sys/refcount.h> 35fa9e4066Sahrens #include <sys/zfs_context.h> 36fa9e4066Sahrens 37fa9e4066Sahrens #ifdef __cplusplus 38fa9e4066Sahrens extern "C" { 39fa9e4066Sahrens #endif 40fa9e4066Sahrens 41fa9e4066Sahrens struct dsl_dataset; 42fa9e4066Sahrens 43fa9e4066Sahrens typedef struct dsl_dir_phys { 44*a2eea2e1Sahrens uint64_t dd_creation_time; /* not actually used */ 45fa9e4066Sahrens uint64_t dd_head_dataset_obj; 46fa9e4066Sahrens uint64_t dd_parent_obj; 47fa9e4066Sahrens uint64_t dd_clone_parent_obj; 48fa9e4066Sahrens uint64_t dd_child_dir_zapobj; 49fa9e4066Sahrens /* 50fa9e4066Sahrens * how much space our children are accounting for; for leaf 51fa9e4066Sahrens * datasets, == physical space used by fs + snaps 52fa9e4066Sahrens */ 53fa9e4066Sahrens uint64_t dd_used_bytes; 54fa9e4066Sahrens uint64_t dd_compressed_bytes; 55fa9e4066Sahrens uint64_t dd_uncompressed_bytes; 56fa9e4066Sahrens /* Administrative quota setting */ 57fa9e4066Sahrens uint64_t dd_quota; 58fa9e4066Sahrens /* Administrative reservation setting */ 59fa9e4066Sahrens uint64_t dd_reserved; 60fa9e4066Sahrens uint64_t dd_props_zapobj; 61fa9e4066Sahrens uint64_t dd_pad[21]; /* pad out to 256 bytes for good measure */ 62fa9e4066Sahrens } dsl_dir_phys_t; 63fa9e4066Sahrens 64fa9e4066Sahrens struct dsl_dir { 65fa9e4066Sahrens /* These are immutable; no lock needed: */ 66fa9e4066Sahrens uint64_t dd_object; 67fa9e4066Sahrens dsl_dir_phys_t *dd_phys; 68fa9e4066Sahrens dmu_buf_t *dd_dbuf; 69fa9e4066Sahrens dsl_pool_t *dd_pool; 70fa9e4066Sahrens 71fa9e4066Sahrens /* protected by lock on pool's dp_dirty_dirs list */ 72fa9e4066Sahrens txg_node_t dd_dirty_link; 73fa9e4066Sahrens 74fa9e4066Sahrens /* protected by dp_config_rwlock */ 75fa9e4066Sahrens dsl_dir_t *dd_parent; 76fa9e4066Sahrens 77fa9e4066Sahrens /* Protected by dd_lock */ 78fa9e4066Sahrens kmutex_t dd_lock; 79fa9e4066Sahrens list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */ 80fa9e4066Sahrens 81fa9e4066Sahrens /* Accounting */ 82fa9e4066Sahrens /* reflects any changes to dd_phys->dd_used_bytes made this syncing */ 83fa9e4066Sahrens int64_t dd_used_bytes; 84fa9e4066Sahrens /* gross estimate of space used by in-flight tx's */ 85fa9e4066Sahrens uint64_t dd_tempreserved[TXG_SIZE]; 86fa9e4066Sahrens /* amount of space we expect to write; == amount of dirty data */ 87fa9e4066Sahrens int64_t dd_space_towrite[TXG_SIZE]; 88fa9e4066Sahrens 89fa9e4066Sahrens /* protected by dd_lock; keep at end of struct for better locality */ 90fa9e4066Sahrens char dd_myname[MAXNAMELEN]; 91fa9e4066Sahrens }; 92fa9e4066Sahrens 93fa9e4066Sahrens void dsl_dir_close(dsl_dir_t *dd, void *tag); 94ea8dc4b6Seschrock int dsl_dir_open(const char *name, void *tag, dsl_dir_t **, const char **tail); 95ea8dc4b6Seschrock int dsl_dir_open_spa(spa_t *spa, const char *name, void *tag, dsl_dir_t **, 96fa9e4066Sahrens const char **tailp); 97ea8dc4b6Seschrock int dsl_dir_open_obj(dsl_pool_t *dp, uint64_t ddobj, 98ea8dc4b6Seschrock const char *tail, void *tag, dsl_dir_t **); 99fa9e4066Sahrens void dsl_dir_name(dsl_dir_t *dd, char *buf); 100fa9e4066Sahrens int dsl_dir_is_private(dsl_dir_t *dd); 1011d452cf5Sahrens uint64_t dsl_dir_create_sync(dsl_dir_t *pds, const char *name, dmu_tx_t *tx); 102fa9e4066Sahrens void dsl_dir_create_root(objset_t *mos, uint64_t *ddobjp, dmu_tx_t *tx); 1031d452cf5Sahrens dsl_checkfunc_t dsl_dir_destroy_check; 1041d452cf5Sahrens dsl_syncfunc_t dsl_dir_destroy_sync; 105*a2eea2e1Sahrens void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv); 106*a2eea2e1Sahrens uint64_t dsl_dir_space_available(dsl_dir_t *dd, 107*a2eea2e1Sahrens dsl_dir_t *ancestor, int64_t delta, int ondiskonly); 108fa9e4066Sahrens void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx); 109fa9e4066Sahrens void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx); 110fa9e4066Sahrens int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem, 111fa9e4066Sahrens uint64_t asize, uint64_t fsize, void **tr_cookiep, dmu_tx_t *tx); 112fa9e4066Sahrens void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx); 113fa9e4066Sahrens void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx); 114fa9e4066Sahrens void dsl_dir_diduse_space(dsl_dir_t *dd, 115fa9e4066Sahrens int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx); 116fa9e4066Sahrens int dsl_dir_set_quota(const char *ddname, uint64_t quota); 117fa9e4066Sahrens int dsl_dir_set_reservation(const char *ddname, uint64_t reservation); 1181d452cf5Sahrens int dsl_dir_rename(dsl_dir_t *dd, const char *newname); 11999653d4eSeschrock int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, uint64_t space); 120fa9e4066Sahrens 12115f66a7fSek /* internal reserved dir name */ 12215f66a7fSek #define MOS_DIR_NAME "$MOS" 12315f66a7fSek 124fa9e4066Sahrens #ifdef ZFS_DEBUG 125fa9e4066Sahrens #define dprintf_dd(dd, fmt, ...) do { \ 126fa9e4066Sahrens if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 12715f66a7fSek char *__ds_name = kmem_alloc(MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, \ 12815f66a7fSek KM_SLEEP); \ 129fa9e4066Sahrens dsl_dir_name(dd, __ds_name); \ 130fa9e4066Sahrens dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \ 13115f66a7fSek kmem_free(__ds_name, MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); \ 132fa9e4066Sahrens } \ 133fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 134fa9e4066Sahrens #else 135fa9e4066Sahrens #define dprintf_dd(dd, fmt, ...) 136fa9e4066Sahrens #endif 137fa9e4066Sahrens 138fa9e4066Sahrens #ifdef __cplusplus 139fa9e4066Sahrens } 140fa9e4066Sahrens #endif 141fa9e4066Sahrens 142fa9e4066Sahrens #endif /* _SYS_DSL_DIR_H */ 143