dsl_dir.h revision 1d452cf5123cb6ac0a013a4dbd4dcceeb0da314d
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * Common Development and Distribution License (the "License").
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifndef _SYS_DSL_DIR_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define _SYS_DSL_DIR_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#pragma ident "%Z%%M% %I% %E% SMI"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dsl_pool.h>
1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens#include <sys/dsl_synctask.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/refcount.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zfs_context.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern "C" {
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct dsl_dataset;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct dsl_dir_phys {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_creation_time;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_head_dataset_obj;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_parent_obj;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_clone_parent_obj;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_child_dir_zapobj;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * how much space our children are accounting for; for leaf
fa9e4066f08beec538e775443c5be79dd423fcabahrens * datasets, == physical space used by fs + snaps
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_used_bytes;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_compressed_bytes;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_uncompressed_bytes;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Administrative quota setting */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_quota;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Administrative reservation setting */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_reserved;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_props_zapobj;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_pad[21]; /* pad out to 256 bytes for good measure */
fa9e4066f08beec538e775443c5be79dd423fcabahrens} dsl_dir_phys_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct dsl_dir {
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* These are immutable; no lock needed: */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_object;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dir_phys_t *dd_phys;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dmu_buf_t *dd_dbuf;
fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_pool_t *dd_pool;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* protected by lock on pool's dp_dirty_dirs list */
fa9e4066f08beec538e775443c5be79dd423fcabahrens txg_node_t dd_dirty_link;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* protected by dp_config_rwlock */
fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dir_t *dd_parent;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Protected by dd_lock */
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmutex_t dd_lock;
fa9e4066f08beec538e775443c5be79dd423fcabahrens list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Accounting */
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* reflects any changes to dd_phys->dd_used_bytes made this syncing */
fa9e4066f08beec538e775443c5be79dd423fcabahrens int64_t dd_used_bytes;
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* gross estimate of space used by in-flight tx's */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t dd_tempreserved[TXG_SIZE];
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* amount of space we expect to write; == amount of dirty data */
fa9e4066f08beec538e775443c5be79dd423fcabahrens int64_t dd_space_towrite[TXG_SIZE];
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* protected by dd_lock; keep at end of struct for better locality */
fa9e4066f08beec538e775443c5be79dd423fcabahrens char dd_myname[MAXNAMELEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens};
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_close(dsl_dir_t *dd, void *tag);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockint dsl_dir_open(const char *name, void *tag, dsl_dir_t **, const char **tail);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockint dsl_dir_open_spa(spa_t *spa, const char *name, void *tag, dsl_dir_t **,
fa9e4066f08beec538e775443c5be79dd423fcabahrens const char **tailp);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockint dsl_dir_open_obj(dsl_pool_t *dp, uint64_t ddobj,
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock const char *tail, void *tag, dsl_dir_t **);
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_name(dsl_dir_t *dd, char *buf);
fa9e4066f08beec538e775443c5be79dd423fcabahrensint dsl_dir_is_private(dsl_dir_t *dd);
1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrensuint64_t dsl_dir_create_sync(dsl_dir_t *pds, const char *name, dmu_tx_t *tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_create_root(objset_t *mos, uint64_t *ddobjp, dmu_tx_t *tx);
1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrensdsl_checkfunc_t dsl_dir_destroy_check;
1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrensdsl_syncfunc_t dsl_dir_destroy_sync;
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_stats(dsl_dir_t *dd, dmu_objset_stats_t *dds);
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrensint dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem,
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t asize, uint64_t fsize, void **tr_cookiep, dmu_tx_t *tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid dsl_dir_diduse_space(dsl_dir_t *dd,
fa9e4066f08beec538e775443c5be79dd423fcabahrens int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx);
fa9e4066f08beec538e775443c5be79dd423fcabahrensint dsl_dir_set_quota(const char *ddname, uint64_t quota);
fa9e4066f08beec538e775443c5be79dd423fcabahrensint dsl_dir_set_reservation(const char *ddname, uint64_t reservation);
1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrensint dsl_dir_rename(dsl_dir_t *dd, const char *newname);
99653d4ee642c6528e88224f12409a5f23060994eschrockint dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, uint64_t space);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef ZFS_DEBUG
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define dprintf_dd(dd, fmt, ...) do { \
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *__ds_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); \
fa9e4066f08beec538e775443c5be79dd423fcabahrens dsl_dir_name(dd, __ds_name); \
fa9e4066f08beec538e775443c5be79dd423fcabahrens dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmem_free(__ds_name, MAXNAMELEN); \
fa9e4066f08beec538e775443c5be79dd423fcabahrens } \
fa9e4066f08beec538e775443c5be79dd423fcabahrens_NOTE(CONSTCOND) } while (0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens#else
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define dprintf_dd(dd, fmt, ...)
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif /* _SYS_DSL_DIR_H */