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137 lines
4.2 KiB
C
137 lines
4.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_DMU_OBJSET_H
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#define _SYS_DMU_OBJSET_H
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#pragma ident "%Z%%M% %I% %E% SMI"
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#include <sys/spa.h>
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#include <sys/arc.h>
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#include <sys/txg.h>
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#include <sys/zfs_context.h>
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#include <sys/dnode.h>
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#include <sys/zio.h>
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#include <sys/zil.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct dsl_dataset;
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struct dmu_tx;
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struct objset_impl;
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typedef struct objset_phys {
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dnode_phys_t os_meta_dnode;
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zil_header_t os_zil_header;
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uint64_t os_type;
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char os_pad[1024 - sizeof (dnode_phys_t) - sizeof (zil_header_t) -
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sizeof (uint64_t)];
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} objset_phys_t;
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struct objset {
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struct objset_impl *os;
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int os_mode;
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};
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typedef struct objset_impl {
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/* Immutable: */
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struct dsl_dataset *os_dsl_dataset;
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spa_t *os_spa;
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arc_buf_t *os_phys_buf;
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objset_phys_t *os_phys;
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dnode_t *os_meta_dnode;
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zilog_t *os_zil;
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objset_t os;
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uint8_t os_checksum; /* can change, under dsl_dir's locks */
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uint8_t os_compress; /* can change, under dsl_dir's locks */
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uint8_t os_copies; /* can change, under dsl_dir's locks */
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uint8_t os_primary_cache; /* can change, under dsl_dir's locks */
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uint8_t os_secondary_cache; /* can change, under dsl_dir's locks */
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/* no lock needed: */
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struct dmu_tx *os_synctx; /* XXX sketchy */
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blkptr_t *os_rootbp;
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zil_header_t os_zil_header;
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/* Protected by os_obj_lock */
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kmutex_t os_obj_lock;
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uint64_t os_obj_next;
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/* Protected by os_lock */
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kmutex_t os_lock;
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list_t os_dirty_dnodes[TXG_SIZE];
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list_t os_free_dnodes[TXG_SIZE];
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list_t os_dnodes;
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list_t os_downgraded_dbufs;
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/* stuff we store for the user */
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kmutex_t os_user_ptr_lock;
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void *os_user_ptr;
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} objset_impl_t;
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#define DMU_META_DNODE_OBJECT 0
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#define DMU_OS_IS_L2CACHEABLE(os) \
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((os)->os_secondary_cache == ZFS_CACHE_ALL || \
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(os)->os_secondary_cache == ZFS_CACHE_METADATA)
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/* called from zpl */
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int dmu_objset_open(const char *name, dmu_objset_type_t type, int mode,
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objset_t **osp);
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void dmu_objset_close(objset_t *os);
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int dmu_objset_create(const char *name, dmu_objset_type_t type,
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objset_t *clone_parent, uint64_t flags,
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void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
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int dmu_objset_destroy(const char *name);
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int dmu_objset_rollback(objset_t *os);
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int dmu_objset_snapshot(char *fsname, char *snapname, boolean_t recursive);
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void dmu_objset_stats(objset_t *os, nvlist_t *nv);
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void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
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void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
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uint64_t *usedobjsp, uint64_t *availobjsp);
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uint64_t dmu_objset_fsid_guid(objset_t *os);
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int dmu_objset_find(char *name, int func(char *, void *), void *arg,
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int flags);
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int dmu_objset_find_spa(spa_t *spa, const char *name,
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int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags);
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void dmu_objset_byteswap(void *buf, size_t size);
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int dmu_objset_evict_dbufs(objset_t *os);
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/* called from dsl */
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void dmu_objset_sync(objset_impl_t *os, zio_t *zio, dmu_tx_t *tx);
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objset_impl_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
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blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
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int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
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objset_impl_t **osip);
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void dmu_objset_evict(struct dsl_dataset *ds, void *arg);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_DMU_OBJSET_H */
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