186 lines
5.9 KiB
C
186 lines
5.9 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
|
|
*/
|
|
|
|
/* Portions Copyright 2010 Robert Milkowski */
|
|
|
|
#ifndef _SYS_DMU_OBJSET_H
|
|
#define _SYS_DMU_OBJSET_H
|
|
|
|
#include <sys/spa.h>
|
|
#include <sys/arc.h>
|
|
#include <sys/txg.h>
|
|
#include <sys/zfs_context.h>
|
|
#include <sys/dnode.h>
|
|
#include <sys/zio.h>
|
|
#include <sys/zil.h>
|
|
#include <sys/sa.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
extern krwlock_t os_lock;
|
|
|
|
struct dsl_dataset;
|
|
struct dmu_tx;
|
|
|
|
#define OBJSET_PHYS_SIZE 2048
|
|
#define OBJSET_OLD_PHYS_SIZE 1024
|
|
|
|
#define OBJSET_BUF_HAS_USERUSED(buf) \
|
|
(arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE)
|
|
|
|
#define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)
|
|
|
|
typedef struct objset_phys {
|
|
dnode_phys_t os_meta_dnode;
|
|
zil_header_t os_zil_header;
|
|
uint64_t os_type;
|
|
uint64_t os_flags;
|
|
char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 -
|
|
sizeof (zil_header_t) - sizeof (uint64_t)*2];
|
|
dnode_phys_t os_userused_dnode;
|
|
dnode_phys_t os_groupused_dnode;
|
|
} objset_phys_t;
|
|
|
|
struct objset {
|
|
/* Immutable: */
|
|
struct dsl_dataset *os_dsl_dataset;
|
|
spa_t *os_spa;
|
|
arc_buf_t *os_phys_buf;
|
|
objset_phys_t *os_phys;
|
|
/*
|
|
* The following "special" dnodes have no parent and are exempt from
|
|
* dnode_move(), but they root their descendents in this objset using
|
|
* handles anyway, so that all access to dnodes from dbufs consistently
|
|
* uses handles.
|
|
*/
|
|
dnode_handle_t os_meta_dnode;
|
|
dnode_handle_t os_userused_dnode;
|
|
dnode_handle_t os_groupused_dnode;
|
|
zilog_t *os_zil;
|
|
|
|
/* can change, under dsl_dir's locks: */
|
|
uint8_t os_checksum;
|
|
uint8_t os_compress;
|
|
uint8_t os_copies;
|
|
uint8_t os_dedup_checksum;
|
|
uint8_t os_dedup_verify;
|
|
uint8_t os_logbias;
|
|
uint8_t os_primary_cache;
|
|
uint8_t os_secondary_cache;
|
|
uint8_t os_sync;
|
|
|
|
/* no lock needed: */
|
|
struct dmu_tx *os_synctx; /* XXX sketchy */
|
|
blkptr_t *os_rootbp;
|
|
zil_header_t os_zil_header;
|
|
list_t os_synced_dnodes;
|
|
uint64_t os_flags;
|
|
|
|
/* Protected by os_obj_lock */
|
|
kmutex_t os_obj_lock;
|
|
uint64_t os_obj_next;
|
|
|
|
/* Protected by os_lock */
|
|
kmutex_t os_lock;
|
|
list_t os_dirty_dnodes[TXG_SIZE];
|
|
list_t os_free_dnodes[TXG_SIZE];
|
|
list_t os_dnodes;
|
|
list_t os_downgraded_dbufs;
|
|
|
|
/* stuff we store for the user */
|
|
kmutex_t os_user_ptr_lock;
|
|
void *os_user_ptr;
|
|
|
|
/* SA layout/attribute registration */
|
|
sa_os_t *os_sa;
|
|
};
|
|
|
|
#define DMU_META_OBJSET 0
|
|
#define DMU_META_DNODE_OBJECT 0
|
|
#define DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0)
|
|
#define DMU_META_DNODE(os) ((os)->os_meta_dnode.dnh_dnode)
|
|
#define DMU_USERUSED_DNODE(os) ((os)->os_userused_dnode.dnh_dnode)
|
|
#define DMU_GROUPUSED_DNODE(os) ((os)->os_groupused_dnode.dnh_dnode)
|
|
|
|
#define DMU_OS_IS_L2CACHEABLE(os) \
|
|
((os)->os_secondary_cache == ZFS_CACHE_ALL || \
|
|
(os)->os_secondary_cache == ZFS_CACHE_METADATA)
|
|
|
|
#define DMU_OS_IS_L2COMPRESSIBLE(os) (zfs_mdcomp_disable == B_FALSE)
|
|
|
|
/* called from zpl */
|
|
int dmu_objset_hold(const char *name, void *tag, objset_t **osp);
|
|
int dmu_objset_own(const char *name, dmu_objset_type_t type,
|
|
boolean_t readonly, void *tag, objset_t **osp);
|
|
void dmu_objset_rele(objset_t *os, void *tag);
|
|
void dmu_objset_disown(objset_t *os, void *tag);
|
|
int dmu_objset_from_ds(struct dsl_dataset *ds, objset_t **osp);
|
|
|
|
int dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
|
|
void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
|
|
int dmu_objset_clone(const char *name, struct dsl_dataset *clone_origin,
|
|
uint64_t flags);
|
|
int dmu_objset_destroy(const char *name, boolean_t defer);
|
|
int dmu_objset_snapshot(char *fsname, char *snapname, char *tag,
|
|
struct nvlist *props, boolean_t recursive, boolean_t temporary, int fd);
|
|
void dmu_objset_stats(objset_t *os, nvlist_t *nv);
|
|
void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
|
|
void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
|
|
uint64_t *usedobjsp, uint64_t *availobjsp);
|
|
uint64_t dmu_objset_fsid_guid(objset_t *os);
|
|
int dmu_objset_find(char *name, int func(const char *, void *), void *arg,
|
|
int flags);
|
|
int dmu_objset_find_spa(spa_t *spa, const char *name,
|
|
int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags);
|
|
int dmu_objset_prefetch(const char *name, void *arg);
|
|
void dmu_objset_byteswap(void *buf, size_t size);
|
|
int dmu_objset_evict_dbufs(objset_t *os);
|
|
timestruc_t dmu_objset_snap_cmtime(objset_t *os);
|
|
|
|
/* called from dsl */
|
|
void dmu_objset_sync(objset_t *os, zio_t *zio, dmu_tx_t *tx);
|
|
boolean_t dmu_objset_is_dirty(objset_t *os, uint64_t txg);
|
|
objset_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
|
|
blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
|
|
int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
|
|
objset_t **osp);
|
|
void dmu_objset_evict(objset_t *os);
|
|
void dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx);
|
|
void dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx);
|
|
boolean_t dmu_objset_userused_enabled(objset_t *os);
|
|
int dmu_objset_userspace_upgrade(objset_t *os);
|
|
boolean_t dmu_objset_userspace_present(objset_t *os);
|
|
|
|
void dmu_objset_init(void);
|
|
void dmu_objset_fini(void);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_DMU_OBJSET_H */
|