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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 | /* | |
22 | * Copyright 2008 Sun Microsystems, Inc. All rights reserved. | |
23 | * Use is subject to license terms. | |
24 | */ | |
25 | ||
26 | #ifndef _SYS_DMU_OBJSET_H | |
27 | #define _SYS_DMU_OBJSET_H | |
28 | ||
29 | #pragma ident "@(#)dmu_objset.h 1.13 08/04/27 SMI" | |
30 | ||
31 | #include <sys/spa.h> | |
32 | #include <sys/arc.h> | |
33 | #include <sys/txg.h> | |
34 | #include <sys/zfs_context.h> | |
35 | #include <sys/dnode.h> | |
36 | #include <sys/zio.h> | |
37 | #include <sys/zil.h> | |
38 | ||
39 | #ifdef __cplusplus | |
40 | extern "C" { | |
41 | #endif | |
42 | ||
43 | struct dsl_dataset; | |
44 | struct dmu_tx; | |
45 | struct objset_impl; | |
46 | ||
47 | typedef struct objset_phys { | |
48 | dnode_phys_t os_meta_dnode; | |
49 | zil_header_t os_zil_header; | |
50 | uint64_t os_type; | |
51 | char os_pad[1024 - sizeof (dnode_phys_t) - sizeof (zil_header_t) - | |
52 | sizeof (uint64_t)]; | |
53 | } objset_phys_t; | |
54 | ||
55 | struct objset { | |
56 | struct objset_impl *os; | |
57 | int os_mode; | |
58 | }; | |
59 | ||
60 | typedef struct objset_impl { | |
61 | /* Immutable: */ | |
62 | struct dsl_dataset *os_dsl_dataset; | |
63 | spa_t *os_spa; | |
64 | arc_buf_t *os_phys_buf; | |
65 | objset_phys_t *os_phys; | |
66 | dnode_t *os_meta_dnode; | |
67 | zilog_t *os_zil; | |
68 | objset_t os; | |
69 | uint8_t os_checksum; /* can change, under dsl_dir's locks */ | |
70 | uint8_t os_compress; /* can change, under dsl_dir's locks */ | |
71 | uint8_t os_copies; /* can change, under dsl_dir's locks */ | |
72 | uint8_t os_md_checksum; | |
73 | uint8_t os_md_compress; | |
74 | ||
75 | /* no lock needed: */ | |
76 | struct dmu_tx *os_synctx; /* XXX sketchy */ | |
77 | blkptr_t *os_rootbp; | |
78 | ||
79 | /* Protected by os_obj_lock */ | |
80 | kmutex_t os_obj_lock; | |
81 | uint64_t os_obj_next; | |
82 | ||
83 | /* Protected by os_lock */ | |
84 | kmutex_t os_lock; | |
85 | list_t os_dirty_dnodes[TXG_SIZE]; | |
86 | list_t os_free_dnodes[TXG_SIZE]; | |
87 | list_t os_dnodes; | |
88 | list_t os_downgraded_dbufs; | |
89 | ||
90 | /* stuff we store for the user */ | |
91 | kmutex_t os_user_ptr_lock; | |
92 | void *os_user_ptr; | |
93 | } objset_impl_t; | |
94 | ||
95 | #define DMU_META_DNODE_OBJECT 0 | |
96 | ||
97 | /* called from zpl */ | |
98 | int dmu_objset_open(const char *name, dmu_objset_type_t type, int mode, | |
99 | objset_t **osp); | |
100 | void dmu_objset_close(objset_t *os); | |
101 | int dmu_objset_create(const char *name, dmu_objset_type_t type, | |
102 | objset_t *clone_parent, uint64_t flags, | |
103 | void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg); | |
104 | int dmu_objset_destroy(const char *name); | |
105 | int dmu_objset_rollback(objset_t *os); | |
106 | int dmu_objset_snapshot(char *fsname, char *snapname, boolean_t recursive); | |
107 | void dmu_objset_stats(objset_t *os, nvlist_t *nv); | |
108 | void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat); | |
109 | void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, | |
110 | uint64_t *usedobjsp, uint64_t *availobjsp); | |
111 | uint64_t dmu_objset_fsid_guid(objset_t *os); | |
112 | int dmu_objset_find(char *name, int func(char *, void *), void *arg, | |
113 | int flags); | |
114 | void dmu_objset_byteswap(void *buf, size_t size); | |
115 | int dmu_objset_evict_dbufs(objset_t *os); | |
116 | ||
117 | /* called from dsl */ | |
118 | void dmu_objset_sync(objset_impl_t *os, zio_t *zio, dmu_tx_t *tx); | |
119 | objset_impl_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds, | |
120 | blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx); | |
121 | int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp, | |
122 | objset_impl_t **osip); | |
123 | void dmu_objset_evict(struct dsl_dataset *ds, void *arg); | |
124 | ||
125 | #ifdef __cplusplus | |
126 | } | |
127 | #endif | |
128 | ||
129 | #endif /* _SYS_DMU_OBJSET_H */ |