dmu_objset.h revision ecd6cf800b63704be73fb264c3f5b6e0dafc068d
a399b7655a1d835aa8606c2b29e4e777baac8635zf/*
b510adae7e8895b2bf58eda3537fd56df35302e4fei feng - Sun Microsystems - Beijing China * CDDL HEADER START
a399b7655a1d835aa8606c2b29e4e777baac8635zf *
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a399b7655a1d835aa8606c2b29e4e777baac8635zf * Common Development and Distribution License (the "License").
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a399b7655a1d835aa8606c2b29e4e777baac8635zf *
e2cf88ac9d753a00c17aa235f6afdc76574fe3a6Quaker Fang * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
a399b7655a1d835aa8606c2b29e4e777baac8635zf * or http://www.opensolaris.org/os/licensing.
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a399b7655a1d835aa8606c2b29e4e777baac8635zf * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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a399b7655a1d835aa8606c2b29e4e777baac8635zf */
a399b7655a1d835aa8606c2b29e4e777baac8635zf/*
a399b7655a1d835aa8606c2b29e4e777baac8635zf * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
a399b7655a1d835aa8606c2b29e4e777baac8635zf * Use is subject to license terms.
a399b7655a1d835aa8606c2b29e4e777baac8635zf */
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf#ifndef _SYS_DMU_OBJSET_H
a399b7655a1d835aa8606c2b29e4e777baac8635zf#define _SYS_DMU_OBJSET_H
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf#pragma ident "%Z%%M% %I% %E% SMI"
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf#include <sys/spa.h>
a399b7655a1d835aa8606c2b29e4e777baac8635zf#include <sys/arc.h>
a399b7655a1d835aa8606c2b29e4e777baac8635zf#include <sys/txg.h>
a399b7655a1d835aa8606c2b29e4e777baac8635zf#include <sys/zfs_context.h>
a399b7655a1d835aa8606c2b29e4e777baac8635zf#include <sys/dnode.h>
a399b7655a1d835aa8606c2b29e4e777baac8635zf#include <sys/zio.h>
a399b7655a1d835aa8606c2b29e4e777baac8635zf#include <sys/zil.h>
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf#ifdef __cplusplus
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zfextern "C" {
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf#endif
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zfstruct dsl_dataset;
a399b7655a1d835aa8606c2b29e4e777baac8635zfstruct dmu_tx;
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zfstruct objset_impl;
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zftypedef struct objset_phys {
a399b7655a1d835aa8606c2b29e4e777baac8635zf dnode_phys_t os_meta_dnode;
a399b7655a1d835aa8606c2b29e4e777baac8635zf zil_header_t os_zil_header;
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint64_t os_type;
ff3124eff995e6cd8ebd8c6543648e0670920034ff char os_pad[1024 - sizeof (dnode_phys_t) - sizeof (zil_header_t) -
a399b7655a1d835aa8606c2b29e4e777baac8635zf sizeof (uint64_t)];
a399b7655a1d835aa8606c2b29e4e777baac8635zf} objset_phys_t;
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zfstruct objset {
a399b7655a1d835aa8606c2b29e4e777baac8635zf struct objset_impl *os;
a399b7655a1d835aa8606c2b29e4e777baac8635zf int os_mode;
a399b7655a1d835aa8606c2b29e4e777baac8635zf};
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zftypedef struct objset_impl {
a399b7655a1d835aa8606c2b29e4e777baac8635zf /* Immutable: */
a399b7655a1d835aa8606c2b29e4e777baac8635zf struct dsl_dataset *os_dsl_dataset;
a399b7655a1d835aa8606c2b29e4e777baac8635zf spa_t *os_spa;
a399b7655a1d835aa8606c2b29e4e777baac8635zf arc_buf_t *os_phys_buf;
a399b7655a1d835aa8606c2b29e4e777baac8635zf objset_phys_t *os_phys;
a399b7655a1d835aa8606c2b29e4e777baac8635zf dnode_t *os_meta_dnode;
a399b7655a1d835aa8606c2b29e4e777baac8635zf zilog_t *os_zil;
a399b7655a1d835aa8606c2b29e4e777baac8635zf objset_t os;
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint8_t os_checksum; /* can change, under dsl_dir's locks */
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint8_t os_compress; /* can change, under dsl_dir's locks */
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint8_t os_copies; /* can change, under dsl_dir's locks */
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint8_t os_md_checksum;
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint8_t os_md_compress;
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf /* no lock needed: */
a399b7655a1d835aa8606c2b29e4e777baac8635zf struct dmu_tx *os_synctx; /* XXX sketchy */
a399b7655a1d835aa8606c2b29e4e777baac8635zf blkptr_t *os_rootbp;
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf /* Protected by os_obj_lock */
a399b7655a1d835aa8606c2b29e4e777baac8635zf kmutex_t os_obj_lock;
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint64_t os_obj_next;
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf /* Protected by os_lock */
a399b7655a1d835aa8606c2b29e4e777baac8635zf kmutex_t os_lock;
a399b7655a1d835aa8606c2b29e4e777baac8635zf list_t os_dirty_dnodes[TXG_SIZE];
a399b7655a1d835aa8606c2b29e4e777baac8635zf list_t os_free_dnodes[TXG_SIZE];
a399b7655a1d835aa8606c2b29e4e777baac8635zf list_t os_dnodes;
a399b7655a1d835aa8606c2b29e4e777baac8635zf list_t os_downgraded_dbufs;
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf} objset_impl_t;
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf#define DMU_META_DNODE_OBJECT 0
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf/* called from zpl */
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zfint dmu_objset_open(const char *name, dmu_objset_type_t type, int mode,
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf objset_t **osp);
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zfvoid dmu_objset_close(objset_t *os);
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zfint dmu_objset_create(const char *name, dmu_objset_type_t type,
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf objset_t *clone_parent,
3a1a8936dac0ebe7e956fa122b0b0d15e62d4108zf void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
a399b7655a1d835aa8606c2b29e4e777baac8635zfint dmu_objset_destroy(const char *name);
a399b7655a1d835aa8606c2b29e4e777baac8635zfint dmu_objset_rollback(const char *name);
a399b7655a1d835aa8606c2b29e4e777baac8635zfint dmu_objset_snapshot(char *fsname, char *snapname, boolean_t recursive);
a399b7655a1d835aa8606c2b29e4e777baac8635zfvoid dmu_objset_stats(objset_t *os, nvlist_t *nv);
a399b7655a1d835aa8606c2b29e4e777baac8635zfvoid dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
a399b7655a1d835aa8606c2b29e4e777baac8635zfvoid dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
a399b7655a1d835aa8606c2b29e4e777baac8635zf uint64_t *usedobjsp, uint64_t *availobjsp);
a399b7655a1d835aa8606c2b29e4e777baac8635zfuint64_t dmu_objset_fsid_guid(objset_t *os);
a399b7655a1d835aa8606c2b29e4e777baac8635zfint dmu_objset_find(char *name, int func(char *, void *), void *arg,
a399b7655a1d835aa8606c2b29e4e777baac8635zf int flags);
a399b7655a1d835aa8606c2b29e4e777baac8635zfvoid dmu_objset_byteswap(void *buf, size_t size);
a399b7655a1d835aa8606c2b29e4e777baac8635zfint dmu_objset_evict_dbufs(objset_t *os, int try);
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf/* called from dsl */
a399b7655a1d835aa8606c2b29e4e777baac8635zfvoid dmu_objset_sync(objset_impl_t *os, zio_t *zio, dmu_tx_t *tx);
a399b7655a1d835aa8606c2b29e4e777baac8635zfobjset_impl_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
a399b7655a1d835aa8606c2b29e4e777baac8635zf blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
a399b7655a1d835aa8606c2b29e4e777baac8635zfint dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
a399b7655a1d835aa8606c2b29e4e777baac8635zf objset_impl_t **osip);
a399b7655a1d835aa8606c2b29e4e777baac8635zfvoid dmu_objset_evict(struct dsl_dataset *ds, void *arg);
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf#ifdef __cplusplus
a399b7655a1d835aa8606c2b29e4e777baac8635zf}
a399b7655a1d835aa8606c2b29e4e777baac8635zf#endif
a399b7655a1d835aa8606c2b29e4e777baac8635zf
a399b7655a1d835aa8606c2b29e4e777baac8635zf#endif /* _SYS_DMU_OBJSET_H */
a399b7655a1d835aa8606c2b29e4e777baac8635zf