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 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #ifndef _SYS_DMU_OBJSET_H
27 #define _SYS_DMU_OBJSET_H
32 #include <sys/zfs_context.h>
33 #include <sys/dnode.h>
45 typedef struct objset_phys
{
46 dnode_phys_t os_meta_dnode
;
47 zil_header_t os_zil_header
;
49 char os_pad
[1024 - sizeof (dnode_phys_t
) - sizeof (zil_header_t
) -
54 struct objset_impl
*os
;
58 typedef struct objset_impl
{
60 struct dsl_dataset
*os_dsl_dataset
;
62 arc_buf_t
*os_phys_buf
;
63 objset_phys_t
*os_phys
;
64 dnode_t
*os_meta_dnode
;
67 uint8_t os_checksum
; /* can change, under dsl_dir's locks */
68 uint8_t os_compress
; /* can change, under dsl_dir's locks */
69 uint8_t os_copies
; /* can change, under dsl_dir's locks */
70 uint8_t os_primary_cache
; /* can change, under dsl_dir's locks */
71 uint8_t os_secondary_cache
; /* can change, under dsl_dir's locks */
74 struct dmu_tx
*os_synctx
; /* XXX sketchy */
76 zil_header_t os_zil_header
;
78 /* Protected by os_obj_lock */
82 /* Protected by os_lock */
84 list_t os_dirty_dnodes
[TXG_SIZE
];
85 list_t os_free_dnodes
[TXG_SIZE
];
87 list_t os_downgraded_dbufs
;
89 /* stuff we store for the user */
90 kmutex_t os_user_ptr_lock
;
94 #define DMU_META_DNODE_OBJECT 0
96 #define DMU_OS_IS_L2CACHEABLE(os) \
97 ((os)->os_secondary_cache == ZFS_CACHE_ALL || \
98 (os)->os_secondary_cache == ZFS_CACHE_METADATA)
100 /* called from zpl */
101 int dmu_objset_open(const char *name
, dmu_objset_type_t type
, int mode
,
103 void dmu_objset_close(objset_t
*os
);
104 int dmu_objset_create(const char *name
, dmu_objset_type_t type
,
105 objset_t
*clone_parent
, uint64_t flags
,
106 void (*func
)(objset_t
*os
, void *arg
, cred_t
*cr
, dmu_tx_t
*tx
), void *arg
);
107 int dmu_objset_destroy(const char *name
);
108 int dmu_objset_rollback(objset_t
*os
);
109 int dmu_objset_snapshot(char *fsname
, char *snapname
, boolean_t recursive
);
110 void dmu_objset_stats(objset_t
*os
, nvlist_t
*nv
);
111 void dmu_objset_fast_stat(objset_t
*os
, dmu_objset_stats_t
*stat
);
112 void dmu_objset_space(objset_t
*os
, uint64_t *refdbytesp
, uint64_t *availbytesp
,
113 uint64_t *usedobjsp
, uint64_t *availobjsp
);
114 uint64_t dmu_objset_fsid_guid(objset_t
*os
);
115 int dmu_objset_find(char *name
, int func(char *, void *), void *arg
,
117 int dmu_objset_find_spa(spa_t
*spa
, const char *name
,
118 int func(spa_t
*, uint64_t, const char *, void *), void *arg
, int flags
);
119 int dmu_objset_prefetch(char *name
, void *arg
);
120 void dmu_objset_byteswap(void *buf
, size_t size
);
121 int dmu_objset_evict_dbufs(objset_t
*os
);
123 /* called from dsl */
124 void dmu_objset_sync(objset_impl_t
*os
, zio_t
*zio
, dmu_tx_t
*tx
);
125 objset_impl_t
*dmu_objset_create_impl(spa_t
*spa
, struct dsl_dataset
*ds
,
126 blkptr_t
*bp
, dmu_objset_type_t type
, dmu_tx_t
*tx
);
127 int dmu_objset_open_impl(spa_t
*spa
, struct dsl_dataset
*ds
, blkptr_t
*bp
,
128 objset_impl_t
**osip
);
129 void dmu_objset_evict(struct dsl_dataset
*ds
, void *arg
);
135 #endif /* _SYS_DMU_OBJSET_H */