210 lines
7.0 KiB
C
210 lines
7.0 KiB
C
/*
|
|
* 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, 2017 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 <sys/dmu.h>
|
|
#include <sys/dsl_pool.h>
|
|
#include <sys/dsl_synctask.h>
|
|
#include <sys/refcount.h>
|
|
#include <sys/zfs_context.h>
|
|
#include <sys/dsl_crypt.h>
|
|
|
|
#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 <reverse-dns>:<field>.
|
|
*/
|
|
|
|
#define DD_FIELD_FILESYSTEM_COUNT "com.joyent:filesystem_count"
|
|
#define DD_FIELD_SNAPSHOT_COUNT "com.joyent:snapshot_count"
|
|
#define DD_FIELD_CRYPTO_KEY_OBJ "com.datto:crypto_key_obj"
|
|
|
|
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 */
|
|
inode_timespec_t dd_snap_cmtime; /* last snapshot namespace change */
|
|
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_compressed(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);
|
|
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_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);
|
|
inode_timespec_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 */
|