93 lines
3 KiB
C
93 lines
3 KiB
C
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/*
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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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012, 2018 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_DMU_TRAVERSE_H
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#define _SYS_DMU_TRAVERSE_H
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#include <sys/zfs_context.h>
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#include <sys/spa.h>
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#include <sys/zio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct dnode_phys;
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struct dsl_dataset;
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struct zilog;
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struct arc_buf;
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typedef int (blkptr_cb_t)(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
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const zbookmark_phys_t *zb, const struct dnode_phys *dnp, void *arg);
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#define TRAVERSE_PRE (1<<0)
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#define TRAVERSE_POST (1<<1)
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#define TRAVERSE_PREFETCH_METADATA (1<<2)
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#define TRAVERSE_PREFETCH_DATA (1<<3)
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#define TRAVERSE_PREFETCH (TRAVERSE_PREFETCH_METADATA | TRAVERSE_PREFETCH_DATA)
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#define TRAVERSE_HARD (1<<4)
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/*
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* Encrypted dnode blocks have encrypted bonus buffers while the rest
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* of the dnode is left unencrypted. Callers can specify the
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* TRAVERSE_NO_DECRYPT flag to indicate to the traversal code that
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* they wish to receive the raw encrypted dnodes instead of attempting
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* to read the logical data.
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*/
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#define TRAVERSE_NO_DECRYPT (1<<5)
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/* Special traverse error return value to indicate skipping of children */
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#define TRAVERSE_VISIT_NO_CHILDREN -1
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int traverse_dataset(struct dsl_dataset *ds,
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uint64_t txg_start, int flags, blkptr_cb_t func, void *arg);
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int traverse_dataset_resume(struct dsl_dataset *ds, uint64_t txg_start,
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zbookmark_phys_t *resume, int flags, blkptr_cb_t func, void *arg);
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int traverse_dataset_destroyed(spa_t *spa, blkptr_t *blkptr,
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uint64_t txg_start, zbookmark_phys_t *resume, int flags,
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blkptr_cb_t func, void *arg);
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int traverse_pool(spa_t *spa,
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uint64_t txg_start, int flags, blkptr_cb_t func, void *arg);
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/*
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* Note that this calculation cannot overflow with the current maximum indirect
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* block size (128k). If that maximum is increased to 1M, however, this
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* calculation can overflow, and handling would need to be added to ensure
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* continued correctness.
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*/
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static inline uint64_t
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bp_span_in_blocks(uint8_t indblkshift, uint64_t level)
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{
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unsigned int shift = level * (indblkshift - SPA_BLKPTRSHIFT);
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ASSERT3U(shift, <, 64);
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return (1ULL << shift);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_DMU_TRAVERSE_H */
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