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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
25 /* Portions Copyright 2010 Robert Milkowski */
27 #ifndef _SYS_DMU_OBJSET_H
28 #define _SYS_DMU_OBJSET_H
33 #include <sys/zfs_context.h>
34 #include <sys/dnode.h>
46 #define OBJSET_PHYS_SIZE 2048
47 #define OBJSET_OLD_PHYS_SIZE 1024
49 #define OBJSET_BUF_HAS_USERUSED(buf) \
50 (arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE)
52 #define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)
54 typedef struct objset_phys {
55 dnode_phys_t os_meta_dnode;
56 zil_header_t os_zil_header;
59 char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 -
60 sizeof (zil_header_t) - sizeof (uint64_t)*2];
61 dnode_phys_t os_userused_dnode;
62 dnode_phys_t os_groupused_dnode;
67 struct dsl_dataset *os_dsl_dataset;
69 arc_buf_t *os_phys_buf;
70 objset_phys_t *os_phys;
71 dnode_t *os_meta_dnode;
72 dnode_t *os_userused_dnode;
73 dnode_t *os_groupused_dnode;
76 /* can change, under dsl_dir's locks: */
80 uint8_t os_dedup_checksum;
81 uint8_t os_dedup_verify;
83 uint8_t os_primary_cache;
84 uint8_t os_secondary_cache;
88 struct dmu_tx *os_synctx; /* XXX sketchy */
90 zil_header_t os_zil_header;
91 list_t os_synced_dnodes;
94 /* Protected by os_obj_lock */
98 /* Protected by os_lock */
100 list_t os_dirty_dnodes[TXG_SIZE];
101 list_t os_free_dnodes[TXG_SIZE];
103 list_t os_downgraded_dbufs;
105 /* stuff we store for the user */
106 kmutex_t os_user_ptr_lock;
109 /* SA layout/attribute registration */
113 #define DMU_META_OBJSET 0
114 #define DMU_META_DNODE_OBJECT 0
115 #define DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0)
117 #define DMU_OS_IS_L2CACHEABLE(os) \
118 ((os)->os_secondary_cache == ZFS_CACHE_ALL || \
119 (os)->os_secondary_cache == ZFS_CACHE_METADATA)
121 /* called from zpl */
122 int dmu_objset_hold(const char *name, void *tag, objset_t **osp);
123 int dmu_objset_own(const char *name, dmu_objset_type_t type,
124 boolean_t readonly, void *tag, objset_t **osp);
125 void dmu_objset_rele(objset_t *os, void *tag);
126 void dmu_objset_disown(objset_t *os, void *tag);
127 int dmu_objset_from_ds(struct dsl_dataset *ds, objset_t **osp);
129 int dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
130 void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
131 int dmu_objset_clone(const char *name, struct dsl_dataset *clone_origin,
133 int dmu_objset_destroy(const char *name, boolean_t defer);
134 int dmu_objset_snapshot(char *fsname, char *snapname, nvlist_t *props,
135 boolean_t recursive);
136 void dmu_objset_stats(objset_t *os, nvlist_t *nv);
137 void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
138 void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
139 uint64_t *usedobjsp, uint64_t *availobjsp);
140 uint64_t dmu_objset_fsid_guid(objset_t *os);
141 int dmu_objset_find(char *name, int func(const char *, void *), void *arg,
143 int dmu_objset_find_spa(spa_t *spa, const char *name,
144 int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags);
145 int dmu_objset_prefetch(const char *name, void *arg);
146 void dmu_objset_byteswap(void *buf, size_t size);
147 int dmu_objset_evict_dbufs(objset_t *os);
148 timestruc_t dmu_objset_snap_cmtime(objset_t *os);
150 /* called from dsl */
151 void dmu_objset_sync(objset_t *os, zio_t *zio, dmu_tx_t *tx);
152 boolean_t dmu_objset_is_dirty(objset_t *os, uint64_t txg);
153 objset_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
154 blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
155 int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
157 void dmu_objset_evict(objset_t *os);
158 void dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx);
159 void dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx);
160 boolean_t dmu_objset_userused_enabled(objset_t *os);
161 int dmu_objset_userspace_upgrade(objset_t *os);
162 boolean_t dmu_objset_userspace_present(objset_t *os);
168 #endif /* _SYS_DMU_OBJSET_H */