/* * 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) 2012, 2017 by Delphix. All rights reserved. * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. */ /* Portions Copyright 2010 Robert Milkowski */ #ifndef _SYS_DMU_OBJSET_H #define _SYS_DMU_OBJSET_H #include #include #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif extern krwlock_t os_lock; struct dsl_pool; 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) #define OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE (1ULL<<1) /* all flags are currently non-portable */ #define OBJSET_CRYPT_PORTABLE_FLAGS_MASK (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; uint8_t os_portable_mac[ZIO_OBJSET_MAC_LEN]; uint8_t os_local_mac[ZIO_OBJSET_MAC_LEN]; char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 - sizeof (zil_header_t) - sizeof (uint64_t)*2 - 2*ZIO_OBJSET_MAC_LEN]; dnode_phys_t os_userused_dnode; dnode_phys_t os_groupused_dnode; } objset_phys_t; typedef int (*dmu_objset_upgrade_cb_t)(objset_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; boolean_t os_encrypted; /* * The following "special" dnodes have no parent, are exempt * from dnode_move(), and are not recorded in os_dnodes, 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; list_node_t os_evicting_node; /* can change, under dsl_dir's locks: */ uint64_t os_dnodesize; /* default dnode size for new objects */ enum zio_checksum os_checksum; enum zio_compress os_compress; uint8_t os_copies; enum zio_checksum os_dedup_checksum; boolean_t os_dedup_verify; zfs_logbias_op_t os_logbias; zfs_cache_type_t os_primary_cache; zfs_cache_type_t os_secondary_cache; zfs_sync_type_t os_sync; zfs_redundant_metadata_type_t os_redundant_metadata; int os_recordsize; /* * Pointer is constant; the blkptr it points to is protected by * os_dsl_dataset->ds_bp_rwlock */ blkptr_t *os_rootbp; /* no lock needed: */ struct dmu_tx *os_synctx; /* XXX sketchy */ zil_header_t os_zil_header; multilist_t *os_synced_dnodes; uint64_t os_flags; uint64_t os_freed_dnodes; boolean_t os_rescan_dnodes; /* os_phys_buf should be written raw next txg */ boolean_t os_next_write_raw; /* Protected by os_obj_lock */ kmutex_t os_obj_lock; uint64_t os_obj_next_chunk; /* Per-CPU next object to allocate, protected by atomic ops. */ uint64_t *os_obj_next_percpu; int os_obj_next_percpu_len; /* Protected by os_lock */ kmutex_t os_lock; multilist_t *os_dirty_dnodes[TXG_SIZE]; list_t os_dnodes; list_t os_downgraded_dbufs; /* Protects changes to DMU_{USER,GROUP}USED_OBJECT */ kmutex_t os_userused_lock; /* stuff we store for the user */ kmutex_t os_user_ptr_lock; void *os_user_ptr; sa_os_t *os_sa; /* kernel thread to upgrade this dataset */ kmutex_t os_upgrade_lock; taskqid_t os_upgrade_id; dmu_objset_upgrade_cb_t os_upgrade_cb; boolean_t os_upgrade_exit; int os_upgrade_status; }; #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) /* called from zpl */ int dmu_objset_hold(const char *name, void *tag, objset_t **osp); int dmu_objset_hold_flags(const char *name, boolean_t decrypt, void *tag, objset_t **osp); int dmu_objset_own(const char *name, dmu_objset_type_t type, boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp); int dmu_objset_own_obj(struct dsl_pool *dp, uint64_t obj, dmu_objset_type_t type, boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp); void dmu_objset_refresh_ownership(objset_t *os, boolean_t key_needed, void *tag); void dmu_objset_rele(objset_t *os, void *tag); void dmu_objset_rele_flags(objset_t *os, boolean_t decrypt, void *tag); void dmu_objset_disown(objset_t *os, boolean_t decrypt, void *tag); int dmu_objset_from_ds(struct dsl_dataset *ds, objset_t **osp); 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_dp(struct dsl_pool *dp, uint64_t ddobj, int func(struct dsl_pool *, struct dsl_dataset *, void *), void *arg, int flags); void 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_dnstats(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp, dmu_objset_type_t type, int levels, int blksz, int ibs, dmu_tx_t *tx); 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); boolean_t dmu_objset_userobjused_enabled(objset_t *os); boolean_t dmu_objset_userobjspace_upgradable(objset_t *os); void dmu_objset_userobjspace_upgrade(objset_t *os); boolean_t dmu_objset_userobjspace_present(objset_t *os); int dmu_fsname(const char *snapname, char *buf); void dmu_objset_evict_done(objset_t *os); void dmu_objset_willuse_space(objset_t *os, int64_t space, dmu_tx_t *tx); void dmu_objset_init(void); void dmu_objset_fini(void); #ifdef __cplusplus } #endif #endif /* _SYS_DMU_OBJSET_H */