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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_DMU_OBJSET_H 28 #define _SYS_DMU_OBJSET_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/spa.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 objset_phys_t *os_phys; 65 dnode_t *os_meta_dnode; 66 zilog_t *os_zil; 67 objset_t os; 68 uint8_t os_checksum; /* can change, under dsl_dir's locks */ 69 uint8_t os_compress; /* can change, under dsl_dir's locks */ 70 uint8_t os_md_checksum; 71 uint8_t os_md_compress; 72 73 /* no lock needed: */ 74 struct dmu_tx *os_synctx; /* XXX sketchy */ 75 blkptr_t os_rootbp; 76 77 /* Protected by os_obj_lock */ 78 kmutex_t os_obj_lock; 79 uint64_t os_obj_next; 80 81 /* Protected by os_lock */ 82 kmutex_t os_lock; 83 list_t os_dirty_dnodes[TXG_SIZE]; 84 list_t os_free_dnodes[TXG_SIZE]; 85 list_t os_dnodes; 86 list_t os_downgraded_dbufs; 87 } objset_impl_t; 88 89 #define DMU_PRIVATE_OBJECT (1ULL << 63) 90 91 #define DMU_META_DNODE_OBJECT (1ULL << 63) 92 93 /* XXX rename this to DMU_IS_DNODE_OBJECT? */ 94 #define IS_DNODE_DNODE(object) ((object) == DMU_META_DNODE_OBJECT) 95 96 /* called from zpl */ 97 int dmu_objset_open(const char *name, dmu_objset_type_t type, int mode, 98 objset_t **osp); 99 void dmu_objset_close(objset_t *os); 100 int dmu_objset_create(const char *name, dmu_objset_type_t type, 101 objset_t *clone_parent, 102 void (*func)(objset_t *os, void *arg, dmu_tx_t *tx), void *arg); 103 int dmu_objset_destroy(const char *name); 104 int dmu_objset_rollback(const char *name); 105 void dmu_objset_stats(objset_t *os, dmu_objset_stats_t *dds); 106 void dmu_objset_find(char *name, void func(char *, void *), void *arg, 107 int flags); 108 void dmu_objset_byteswap(void *buf, size_t size); 109 110 /* called from dsl */ 111 void dmu_objset_sync(objset_impl_t *os, dmu_tx_t *tx); 112 objset_impl_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds, 113 dmu_objset_type_t type, dmu_tx_t *tx); 114 objset_impl_t *dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, 115 blkptr_t *bp); 116 void dmu_objset_evict(struct dsl_dataset *ds, void *arg); 117 118 #ifdef __cplusplus 119 } 120 #endif 121 122 #endif /* _SYS_DMU_OBJSET_H */ 123