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
29 #pragma ident "%Z%%M% %I% %E% SMI"
34 #include <sys/zfs_context.h>
35 #include <sys/dnode.h>
47 typedef struct objset_phys {
48 dnode_phys_t os_meta_dnode;
49 zil_header_t os_zil_header;
51 char os_pad[1024 - sizeof (dnode_phys_t) - sizeof (zil_header_t) -
56 struct objset_impl *os;
60 typedef struct objset_impl {
62 struct dsl_dataset *os_dsl_dataset;
64 arc_buf_t *os_phys_buf;
65 objset_phys_t *os_phys;
66 dnode_t *os_meta_dnode;
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_primary_cache; /* can change, under dsl_dir's locks */
73 uint8_t os_secondary_cache; /* can change, under dsl_dir's locks */
76 struct dmu_tx *os_synctx; /* XXX sketchy */
78 zil_header_t os_zil_header;
80 /* Protected by os_obj_lock */
84 /* Protected by os_lock */
86 list_t os_dirty_dnodes[TXG_SIZE];
87 list_t os_free_dnodes[TXG_SIZE];
89 list_t os_downgraded_dbufs;
91 /* stuff we store for the user */
92 kmutex_t os_user_ptr_lock;
96 #define DMU_META_DNODE_OBJECT 0
98 #define DMU_OS_IS_L2CACHEABLE(os) \
99 ((os)->os_secondary_cache == ZFS_CACHE_ALL || \
100 (os)->os_secondary_cache == ZFS_CACHE_METADATA)
102 /* called from zpl */
103 int dmu_objset_open(const char *name, dmu_objset_type_t type, int mode,
105 void dmu_objset_close(objset_t *os);
106 int dmu_objset_create(const char *name, dmu_objset_type_t type,
107 objset_t *clone_parent, uint64_t flags,
108 void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
109 int dmu_objset_destroy(const char *name);
110 int dmu_objset_rollback(objset_t *os);
111 int dmu_objset_snapshot(char *fsname, char *snapname, boolean_t recursive);
112 void dmu_objset_stats(objset_t *os, nvlist_t *nv);
113 void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
114 void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
115 uint64_t *usedobjsp, uint64_t *availobjsp);
116 uint64_t dmu_objset_fsid_guid(objset_t *os);
117 int dmu_objset_find(char *name, int func(char *, void *), void *arg,
119 int dmu_objset_find_spa(spa_t *spa, const char *name,
120 int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags);
121 void dmu_objset_byteswap(void *buf, size_t size);
122 int dmu_objset_evict_dbufs(objset_t *os);
124 /* called from dsl */
125 void dmu_objset_sync(objset_impl_t *os, zio_t *zio, dmu_tx_t *tx);
126 objset_impl_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
127 blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
128 int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
129 objset_impl_t **osip);
130 void dmu_objset_evict(struct dsl_dataset *ds, void *arg);
136 #endif /* _SYS_DMU_OBJSET_H */