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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. |
34dc7c2f BB |
23 | */ |
24 | ||
428870ff BB |
25 | /* Portions Copyright 2010 Robert Milkowski */ |
26 | ||
34dc7c2f BB |
27 | #ifndef _SYS_DMU_OBJSET_H |
28 | #define _SYS_DMU_OBJSET_H | |
29 | ||
34dc7c2f BB |
30 | #include <sys/spa.h> |
31 | #include <sys/arc.h> | |
32 | #include <sys/txg.h> | |
33 | #include <sys/zfs_context.h> | |
34 | #include <sys/dnode.h> | |
35 | #include <sys/zio.h> | |
36 | #include <sys/zil.h> | |
428870ff | 37 | #include <sys/sa.h> |
34dc7c2f BB |
38 | |
39 | #ifdef __cplusplus | |
40 | extern "C" { | |
41 | #endif | |
42 | ||
572e2857 BB |
43 | extern krwlock_t os_lock; |
44 | ||
34dc7c2f BB |
45 | struct dsl_dataset; |
46 | struct dmu_tx; | |
34dc7c2f | 47 | |
9babb374 BB |
48 | #define OBJSET_PHYS_SIZE 2048 |
49 | #define OBJSET_OLD_PHYS_SIZE 1024 | |
50 | ||
428870ff BB |
51 | #define OBJSET_BUF_HAS_USERUSED(buf) \ |
52 | (arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE) | |
53 | ||
9babb374 BB |
54 | #define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0) |
55 | ||
34dc7c2f BB |
56 | typedef struct objset_phys { |
57 | dnode_phys_t os_meta_dnode; | |
58 | zil_header_t os_zil_header; | |
59 | uint64_t os_type; | |
9babb374 BB |
60 | uint64_t os_flags; |
61 | char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 - | |
62 | sizeof (zil_header_t) - sizeof (uint64_t)*2]; | |
63 | dnode_phys_t os_userused_dnode; | |
64 | dnode_phys_t os_groupused_dnode; | |
34dc7c2f BB |
65 | } objset_phys_t; |
66 | ||
67 | struct objset { | |
34dc7c2f BB |
68 | /* Immutable: */ |
69 | struct dsl_dataset *os_dsl_dataset; | |
70 | spa_t *os_spa; | |
71 | arc_buf_t *os_phys_buf; | |
72 | objset_phys_t *os_phys; | |
572e2857 BB |
73 | /* |
74 | * The following "special" dnodes have no parent and are exempt from | |
75 | * dnode_move(), but they root their descendents in this objset using | |
76 | * handles anyway, so that all access to dnodes from dbufs consistently | |
77 | * uses handles. | |
78 | */ | |
79 | dnode_handle_t os_meta_dnode; | |
80 | dnode_handle_t os_userused_dnode; | |
81 | dnode_handle_t os_groupused_dnode; | |
34dc7c2f | 82 | zilog_t *os_zil; |
428870ff BB |
83 | |
84 | /* can change, under dsl_dir's locks: */ | |
85 | uint8_t os_checksum; | |
86 | uint8_t os_compress; | |
87 | uint8_t os_copies; | |
88 | uint8_t os_dedup_checksum; | |
89 | uint8_t os_dedup_verify; | |
90 | uint8_t os_logbias; | |
91 | uint8_t os_primary_cache; | |
92 | uint8_t os_secondary_cache; | |
93 | uint8_t os_sync; | |
34dc7c2f BB |
94 | |
95 | /* no lock needed: */ | |
96 | struct dmu_tx *os_synctx; /* XXX sketchy */ | |
97 | blkptr_t *os_rootbp; | |
b128c09f | 98 | zil_header_t os_zil_header; |
9babb374 BB |
99 | list_t os_synced_dnodes; |
100 | uint64_t os_flags; | |
34dc7c2f BB |
101 | |
102 | /* Protected by os_obj_lock */ | |
103 | kmutex_t os_obj_lock; | |
104 | uint64_t os_obj_next; | |
105 | ||
106 | /* Protected by os_lock */ | |
107 | kmutex_t os_lock; | |
108 | list_t os_dirty_dnodes[TXG_SIZE]; | |
109 | list_t os_free_dnodes[TXG_SIZE]; | |
110 | list_t os_dnodes; | |
111 | list_t os_downgraded_dbufs; | |
112 | ||
113 | /* stuff we store for the user */ | |
114 | kmutex_t os_user_ptr_lock; | |
115 | void *os_user_ptr; | |
34dc7c2f | 116 | |
428870ff BB |
117 | /* SA layout/attribute registration */ |
118 | sa_os_t *os_sa; | |
119 | }; | |
120 | ||
121 | #define DMU_META_OBJSET 0 | |
34dc7c2f | 122 | #define DMU_META_DNODE_OBJECT 0 |
9babb374 | 123 | #define DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0) |
572e2857 BB |
124 | #define DMU_META_DNODE(os) ((os)->os_meta_dnode.dnh_dnode) |
125 | #define DMU_USERUSED_DNODE(os) ((os)->os_userused_dnode.dnh_dnode) | |
126 | #define DMU_GROUPUSED_DNODE(os) ((os)->os_groupused_dnode.dnh_dnode) | |
34dc7c2f | 127 | |
b128c09f BB |
128 | #define DMU_OS_IS_L2CACHEABLE(os) \ |
129 | ((os)->os_secondary_cache == ZFS_CACHE_ALL || \ | |
130 | (os)->os_secondary_cache == ZFS_CACHE_METADATA) | |
131 | ||
34dc7c2f | 132 | /* called from zpl */ |
428870ff BB |
133 | int dmu_objset_hold(const char *name, void *tag, objset_t **osp); |
134 | int dmu_objset_own(const char *name, dmu_objset_type_t type, | |
135 | boolean_t readonly, void *tag, objset_t **osp); | |
136 | void dmu_objset_rele(objset_t *os, void *tag); | |
137 | void dmu_objset_disown(objset_t *os, void *tag); | |
138 | int dmu_objset_from_ds(struct dsl_dataset *ds, objset_t **osp); | |
139 | ||
140 | int dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, | |
34dc7c2f | 141 | void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg); |
428870ff BB |
142 | int dmu_objset_clone(const char *name, struct dsl_dataset *clone_origin, |
143 | uint64_t flags); | |
45d1cae3 | 144 | int dmu_objset_destroy(const char *name, boolean_t defer); |
572e2857 BB |
145 | int dmu_objset_snapshot(char *fsname, char *snapname, char *tag, |
146 | struct nvlist *props, boolean_t recursive, boolean_t temporary, int fd); | |
34dc7c2f BB |
147 | void dmu_objset_stats(objset_t *os, nvlist_t *nv); |
148 | void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat); | |
149 | void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, | |
150 | uint64_t *usedobjsp, uint64_t *availobjsp); | |
151 | uint64_t dmu_objset_fsid_guid(objset_t *os); | |
428870ff | 152 | int dmu_objset_find(char *name, int func(const char *, void *), void *arg, |
34dc7c2f | 153 | int flags); |
b128c09f BB |
154 | int dmu_objset_find_spa(spa_t *spa, const char *name, |
155 | int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags); | |
428870ff | 156 | int dmu_objset_prefetch(const char *name, void *arg); |
34dc7c2f BB |
157 | void dmu_objset_byteswap(void *buf, size_t size); |
158 | int dmu_objset_evict_dbufs(objset_t *os); | |
428870ff | 159 | timestruc_t dmu_objset_snap_cmtime(objset_t *os); |
34dc7c2f BB |
160 | |
161 | /* called from dsl */ | |
428870ff BB |
162 | void dmu_objset_sync(objset_t *os, zio_t *zio, dmu_tx_t *tx); |
163 | boolean_t dmu_objset_is_dirty(objset_t *os, uint64_t txg); | |
572e2857 | 164 | boolean_t dmu_objset_is_dirty_anywhere(objset_t *os); |
428870ff | 165 | objset_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds, |
34dc7c2f BB |
166 | blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx); |
167 | int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp, | |
428870ff BB |
168 | objset_t **osp); |
169 | void dmu_objset_evict(objset_t *os); | |
170 | void dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx); | |
171 | void dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx); | |
172 | boolean_t dmu_objset_userused_enabled(objset_t *os); | |
9babb374 BB |
173 | int dmu_objset_userspace_upgrade(objset_t *os); |
174 | boolean_t dmu_objset_userspace_present(objset_t *os); | |
34dc7c2f | 175 | |
572e2857 BB |
176 | void dmu_objset_init(void); |
177 | void dmu_objset_fini(void); | |
178 | ||
34dc7c2f BB |
179 | #ifdef __cplusplus |
180 | } | |
181 | #endif | |
182 | ||
183 | #endif /* _SYS_DMU_OBJSET_H */ |