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 2009 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 #define OBJSET_PHYS_SIZE 2048
46 #define OBJSET_OLD_PHYS_SIZE 1024
48 #define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)
50 typedef struct objset_phys {
51 dnode_phys_t os_meta_dnode;
52 zil_header_t os_zil_header;
55 char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 -
56 sizeof (zil_header_t) - sizeof (uint64_t)*2];
57 dnode_phys_t os_userused_dnode;
58 dnode_phys_t os_groupused_dnode;
62 struct objset_impl *os;
66 typedef struct objset_impl {
68 struct dsl_dataset *os_dsl_dataset;
70 arc_buf_t *os_phys_buf;
71 objset_phys_t *os_phys;
72 dnode_t *os_meta_dnode;
73 dnode_t *os_userused_dnode;
74 dnode_t *os_groupused_dnode;
77 uint8_t os_checksum; /* can change, under dsl_dir's locks */
78 uint8_t os_compress; /* can change, under dsl_dir's locks */
79 uint8_t os_copies; /* can change, under dsl_dir's locks */
80 uint8_t os_primary_cache; /* can change, under dsl_dir's locks */
81 uint8_t os_secondary_cache; /* can change, under dsl_dir's locks */
84 struct dmu_tx *os_synctx; /* XXX sketchy */
86 zil_header_t os_zil_header;
87 list_t os_synced_dnodes;
90 /* Protected by os_obj_lock */
94 /* Protected by os_lock */
96 list_t os_dirty_dnodes[TXG_SIZE];
97 list_t os_free_dnodes[TXG_SIZE];
99 list_t os_downgraded_dbufs;
101 /* stuff we store for the user */
102 kmutex_t os_user_ptr_lock;
106 #define DMU_META_DNODE_OBJECT 0
107 #define DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0)
109 #define DMU_OS_IS_L2CACHEABLE(os) \
110 ((os)->os_secondary_cache == ZFS_CACHE_ALL || \
111 (os)->os_secondary_cache == ZFS_CACHE_METADATA)
113 /* called from zpl */
114 int dmu_objset_open(const char *name, dmu_objset_type_t type, int mode,
116 void dmu_objset_close(objset_t *os);
117 int dmu_objset_create(const char *name, dmu_objset_type_t type,
118 objset_t *clone_parent, uint64_t flags,
119 void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
120 int dmu_objset_destroy(const char *name, boolean_t defer);
121 int dmu_objset_rollback(objset_t *os);
122 int dmu_objset_snapshot(char *fsname, char *snapname, nvlist_t *props,
123 boolean_t recursive);
124 void dmu_objset_stats(objset_t *os, nvlist_t *nv);
125 void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
126 void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
127 uint64_t *usedobjsp, uint64_t *availobjsp);
128 uint64_t dmu_objset_fsid_guid(objset_t *os);
129 int dmu_objset_find(char *name, int func(char *, void *), void *arg,
131 int dmu_objset_find_spa(spa_t *spa, const char *name,
132 int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags);
133 int dmu_objset_prefetch(char *name, void *arg);
134 void dmu_objset_byteswap(void *buf, size_t size);
135 int dmu_objset_evict_dbufs(objset_t *os);
137 /* called from dsl */
138 void dmu_objset_sync(objset_impl_t *os, zio_t *zio, dmu_tx_t *tx);
139 objset_impl_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
140 blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
141 int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
142 objset_impl_t **osip);
143 void dmu_objset_evict(struct dsl_dataset *ds, void *arg);
144 void dmu_objset_do_userquota_callbacks(objset_impl_t *os, dmu_tx_t *tx);
145 boolean_t dmu_objset_userused_enabled(objset_impl_t *os);
146 int dmu_objset_userspace_upgrade(objset_t *os);
147 boolean_t dmu_objset_userspace_present(objset_t *os);
153 #endif /* _SYS_DMU_OBJSET_H */