4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
25 #ifndef _SYS_DSL_DIR_H
26 #define _SYS_DSL_DIR_H
29 #include <sys/dsl_pool.h>
30 #include <sys/dsl_synctask.h>
31 #include <sys/refcount.h>
32 #include <sys/zfs_context.h>
40 typedef enum dd_used
{
49 #define DD_FLAG_USED_BREAKDOWN (1<<0)
51 typedef struct dsl_dir_phys
{
52 uint64_t dd_creation_time
; /* not actually used */
53 uint64_t dd_head_dataset_obj
;
54 uint64_t dd_parent_obj
;
55 uint64_t dd_origin_obj
;
56 uint64_t dd_child_dir_zapobj
;
58 * how much space our children are accounting for; for leaf
59 * datasets, == physical space used by fs + snaps
61 uint64_t dd_used_bytes
;
62 uint64_t dd_compressed_bytes
;
63 uint64_t dd_uncompressed_bytes
;
64 /* Administrative quota setting */
66 /* Administrative reservation setting */
68 uint64_t dd_props_zapobj
;
69 uint64_t dd_deleg_zapobj
; /* dataset delegation permissions */
71 uint64_t dd_used_breakdown
[DD_USED_NUM
];
72 uint64_t dd_clones
; /* dsl_dir objects */
73 uint64_t dd_pad
[13]; /* pad out to 256 bytes for good measure */
77 /* These are immutable; no lock needed: */
79 dsl_dir_phys_t
*dd_phys
;
83 /* protected by lock on pool's dp_dirty_dirs list */
84 txg_node_t dd_dirty_link
;
86 /* protected by dp_config_rwlock */
89 /* Protected by dd_lock */
91 list_t dd_prop_cbs
; /* list of dsl_prop_cb_record_t's */
92 timestruc_t dd_snap_cmtime
; /* last time snapshot namespace changed */
93 uint64_t dd_origin_txg
;
95 /* gross estimate of space used by in-flight tx's */
96 uint64_t dd_tempreserved
[TXG_SIZE
];
97 /* amount of space we expect to write; == amount of dirty data */
98 int64_t dd_space_towrite
[TXG_SIZE
];
100 /* protected by dd_lock; keep at end of struct for better locality */
101 char dd_myname
[MAXNAMELEN
];
104 void dsl_dir_close(dsl_dir_t
*dd
, void *tag
);
105 int dsl_dir_open(const char *name
, void *tag
, dsl_dir_t
**, const char **tail
);
106 int dsl_dir_open_spa(spa_t
*spa
, const char *name
, void *tag
, dsl_dir_t
**,
108 int dsl_dir_open_obj(dsl_pool_t
*dp
, uint64_t ddobj
,
109 const char *tail
, void *tag
, dsl_dir_t
**);
110 void dsl_dir_name(dsl_dir_t
*dd
, char *buf
);
111 int dsl_dir_namelen(dsl_dir_t
*dd
);
112 uint64_t dsl_dir_create_sync(dsl_pool_t
*dp
, dsl_dir_t
*pds
,
113 const char *name
, dmu_tx_t
*tx
);
114 dsl_checkfunc_t dsl_dir_destroy_check
;
115 dsl_syncfunc_t dsl_dir_destroy_sync
;
116 void dsl_dir_stats(dsl_dir_t
*dd
, nvlist_t
*nv
);
117 uint64_t dsl_dir_space_available(dsl_dir_t
*dd
,
118 dsl_dir_t
*ancestor
, int64_t delta
, int ondiskonly
);
119 void dsl_dir_dirty(dsl_dir_t
*dd
, dmu_tx_t
*tx
);
120 void dsl_dir_sync(dsl_dir_t
*dd
, dmu_tx_t
*tx
);
121 int dsl_dir_tempreserve_space(dsl_dir_t
*dd
, uint64_t mem
,
122 uint64_t asize
, uint64_t fsize
, uint64_t usize
, void **tr_cookiep
,
124 void dsl_dir_tempreserve_clear(void *tr_cookie
, dmu_tx_t
*tx
);
125 void dsl_dir_willuse_space(dsl_dir_t
*dd
, int64_t space
, dmu_tx_t
*tx
);
126 void dsl_dir_diduse_space(dsl_dir_t
*dd
, dd_used_t type
,
127 int64_t used
, int64_t compressed
, int64_t uncompressed
, dmu_tx_t
*tx
);
128 void dsl_dir_transfer_space(dsl_dir_t
*dd
, int64_t delta
,
129 dd_used_t oldtype
, dd_used_t newtype
, dmu_tx_t
*tx
);
130 int dsl_dir_set_quota(const char *ddname
, zprop_source_t source
,
132 int dsl_dir_set_reservation(const char *ddname
, zprop_source_t source
,
133 uint64_t reservation
);
134 int dsl_dir_rename(dsl_dir_t
*dd
, const char *newname
);
135 int dsl_dir_transfer_possible(dsl_dir_t
*sdd
, dsl_dir_t
*tdd
, uint64_t space
);
136 int dsl_dir_set_reservation_check(void *arg1
, void *arg2
, dmu_tx_t
*tx
);
137 boolean_t
dsl_dir_is_clone(dsl_dir_t
*dd
);
138 void dsl_dir_new_refreservation(dsl_dir_t
*dd
, struct dsl_dataset
*ds
,
139 uint64_t reservation
, cred_t
*cr
, dmu_tx_t
*tx
);
140 void dsl_dir_snap_cmtime_update(dsl_dir_t
*dd
);
141 timestruc_t
dsl_dir_snap_cmtime(dsl_dir_t
*dd
);
143 /* internal reserved dir name */
144 #define MOS_DIR_NAME "$MOS"
145 #define ORIGIN_DIR_NAME "$ORIGIN"
146 #define XLATION_DIR_NAME "$XLATION"
147 #define FREE_DIR_NAME "$FREE"
150 #define dprintf_dd(dd, fmt, ...) do { \
151 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
152 char *__ds_name = kmem_alloc(MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, \
154 dsl_dir_name(dd, __ds_name); \
155 dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \
156 kmem_free(__ds_name, MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); \
158 _NOTE(CONSTCOND) } while (0)
160 #define dprintf_dd(dd, fmt, ...)
167 #endif /* _SYS_DSL_DIR_H */