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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
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. | |
7 | * | |
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. | |
12 | * | |
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] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
a08ee875 | 23 | * Copyright (c) 2013 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
26 | #ifndef _SYS_DSL_DIR_H | |
27 | #define _SYS_DSL_DIR_H | |
28 | ||
34dc7c2f BB |
29 | #include <sys/dmu.h> |
30 | #include <sys/dsl_pool.h> | |
31 | #include <sys/dsl_synctask.h> | |
32 | #include <sys/refcount.h> | |
33 | #include <sys/zfs_context.h> | |
34 | ||
35 | #ifdef __cplusplus | |
36 | extern "C" { | |
37 | #endif | |
38 | ||
39 | struct dsl_dataset; | |
40 | ||
b128c09f BB |
41 | typedef enum dd_used { |
42 | DD_USED_HEAD, | |
43 | DD_USED_SNAP, | |
44 | DD_USED_CHILD, | |
45 | DD_USED_CHILD_RSRV, | |
46 | DD_USED_REFRSRV, | |
47 | DD_USED_NUM | |
48 | } dd_used_t; | |
49 | ||
50 | #define DD_FLAG_USED_BREAKDOWN (1<<0) | |
51 | ||
34dc7c2f BB |
52 | typedef struct dsl_dir_phys { |
53 | uint64_t dd_creation_time; /* not actually used */ | |
54 | uint64_t dd_head_dataset_obj; | |
55 | uint64_t dd_parent_obj; | |
56 | uint64_t dd_origin_obj; | |
57 | uint64_t dd_child_dir_zapobj; | |
58 | /* | |
59 | * how much space our children are accounting for; for leaf | |
60 | * datasets, == physical space used by fs + snaps | |
61 | */ | |
62 | uint64_t dd_used_bytes; | |
63 | uint64_t dd_compressed_bytes; | |
64 | uint64_t dd_uncompressed_bytes; | |
65 | /* Administrative quota setting */ | |
66 | uint64_t dd_quota; | |
67 | /* Administrative reservation setting */ | |
68 | uint64_t dd_reserved; | |
69 | uint64_t dd_props_zapobj; | |
70 | uint64_t dd_deleg_zapobj; /* dataset delegation permissions */ | |
b128c09f BB |
71 | uint64_t dd_flags; |
72 | uint64_t dd_used_breakdown[DD_USED_NUM]; | |
428870ff BB |
73 | uint64_t dd_clones; /* dsl_dir objects */ |
74 | uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */ | |
34dc7c2f BB |
75 | } dsl_dir_phys_t; |
76 | ||
77 | struct dsl_dir { | |
78 | /* These are immutable; no lock needed: */ | |
79 | uint64_t dd_object; | |
80 | dsl_dir_phys_t *dd_phys; | |
81 | dmu_buf_t *dd_dbuf; | |
82 | dsl_pool_t *dd_pool; | |
83 | ||
84 | /* protected by lock on pool's dp_dirty_dirs list */ | |
85 | txg_node_t dd_dirty_link; | |
86 | ||
87 | /* protected by dp_config_rwlock */ | |
88 | dsl_dir_t *dd_parent; | |
89 | ||
90 | /* Protected by dd_lock */ | |
91 | kmutex_t dd_lock; | |
92 | list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */ | |
428870ff BB |
93 | timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */ |
94 | uint64_t dd_origin_txg; | |
34dc7c2f | 95 | |
34dc7c2f BB |
96 | /* gross estimate of space used by in-flight tx's */ |
97 | uint64_t dd_tempreserved[TXG_SIZE]; | |
98 | /* amount of space we expect to write; == amount of dirty data */ | |
99 | int64_t dd_space_towrite[TXG_SIZE]; | |
100 | ||
101 | /* protected by dd_lock; keep at end of struct for better locality */ | |
102 | char dd_myname[MAXNAMELEN]; | |
103 | }; | |
104 | ||
a08ee875 LG |
105 | void dsl_dir_rele(dsl_dir_t *dd, void *tag); |
106 | int dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag, | |
107 | dsl_dir_t **, const char **tail); | |
108 | int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj, | |
34dc7c2f BB |
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); | |
b128c09f BB |
112 | uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds, |
113 | const char *name, dmu_tx_t *tx); | |
34dc7c2f BB |
114 | void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv); |
115 | uint64_t dsl_dir_space_available(dsl_dir_t *dd, | |
116 | dsl_dir_t *ancestor, int64_t delta, int ondiskonly); | |
117 | void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx); | |
118 | void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx); | |
119 | int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem, | |
120 | uint64_t asize, uint64_t fsize, uint64_t usize, void **tr_cookiep, | |
121 | dmu_tx_t *tx); | |
122 | void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx); | |
123 | void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx); | |
b128c09f | 124 | void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type, |
34dc7c2f | 125 | int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx); |
b128c09f BB |
126 | void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta, |
127 | dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx); | |
428870ff BB |
128 | int dsl_dir_set_quota(const char *ddname, zprop_source_t source, |
129 | uint64_t quota); | |
130 | int dsl_dir_set_reservation(const char *ddname, zprop_source_t source, | |
131 | uint64_t reservation); | |
a08ee875 | 132 | int dsl_dir_rename(const char *oldname, const char *newname); |
34dc7c2f | 133 | int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, uint64_t space); |
b128c09f BB |
134 | boolean_t dsl_dir_is_clone(dsl_dir_t *dd); |
135 | void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds, | |
136 | uint64_t reservation, cred_t *cr, dmu_tx_t *tx); | |
428870ff BB |
137 | void dsl_dir_snap_cmtime_update(dsl_dir_t *dd); |
138 | timestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd); | |
a08ee875 LG |
139 | void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value, |
140 | dmu_tx_t *tx); | |
34dc7c2f BB |
141 | |
142 | /* internal reserved dir name */ | |
143 | #define MOS_DIR_NAME "$MOS" | |
b128c09f | 144 | #define ORIGIN_DIR_NAME "$ORIGIN" |
428870ff BB |
145 | #define XLATION_DIR_NAME "$XLATION" |
146 | #define FREE_DIR_NAME "$FREE" | |
34dc7c2f BB |
147 | |
148 | #ifdef ZFS_DEBUG | |
149 | #define dprintf_dd(dd, fmt, ...) do { \ | |
150 | if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ | |
151 | char *__ds_name = kmem_alloc(MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, \ | |
b8d06fca | 152 | KM_PUSHPAGE); \ |
34dc7c2f BB |
153 | dsl_dir_name(dd, __ds_name); \ |
154 | dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \ | |
155 | kmem_free(__ds_name, MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); \ | |
156 | } \ | |
157 | _NOTE(CONSTCOND) } while (0) | |
158 | #else | |
159 | #define dprintf_dd(dd, fmt, ...) | |
160 | #endif | |
161 | ||
162 | #ifdef __cplusplus | |
163 | } | |
164 | #endif | |
165 | ||
166 | #endif /* _SYS_DSL_DIR_H */ |