include/sys/ddt_impl.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or https://opensource.org/licenses/CDDL-1.0.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2016 by Delphix. All rights reserved.
  24  * Copyright (c) 2023, Klara Inc.
  25  */
  26
  27 #ifndef _SYS_DDT_IMPL_H
  28 #define _SYS_DDT_IMPL_H
  29
  30 #include <sys/ddt.h>
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*
  37  * Ops vector to access a specific DDT object type.
  38  */
  39 typedef struct ddt_ops {
  40         char ddt_op_name[32];
  41         int (*ddt_op_create)(objset_t *os, uint64_t *object, dmu_tx_t *tx,
  42             boolean_t prehash);
  43         int (*ddt_op_destroy)(objset_t *os, uint64_t object, dmu_tx_t *tx);
  44         int (*ddt_op_lookup)(objset_t *os, uint64_t object, ddt_entry_t *dde);
  45         void (*ddt_op_prefetch)(objset_t *os, uint64_t object,
  46             ddt_entry_t *dde);
  47         int (*ddt_op_update)(objset_t *os, uint64_t object, ddt_entry_t *dde,
  48             dmu_tx_t *tx);
  49         int (*ddt_op_remove)(objset_t *os, uint64_t object, ddt_entry_t *dde,
  50             dmu_tx_t *tx);
  51         int (*ddt_op_walk)(objset_t *os, uint64_t object, ddt_entry_t *dde,
  52             uint64_t *walk);
  53         int (*ddt_op_count)(objset_t *os, uint64_t object, uint64_t *count);
  54 } ddt_ops_t;
  55
  56 extern const ddt_ops_t ddt_zap_ops;
  57
  58 extern void ddt_stat_update(ddt_t *ddt, ddt_entry_t *dde, uint64_t neg);
  59
  60 /*
  61  * These are only exposed so that zdb can access them. Try not to use them
  62  * outside of the DDT implementation proper, and if you do, consider moving
  63  * them up.
  64  */
  65 #define DDT_NAMELEN     107
  66
  67 extern uint64_t ddt_phys_total_refcnt(const ddt_entry_t *dde);
  68
  69 extern void ddt_key_fill(ddt_key_t *ddk, const blkptr_t *bp);
  70
  71 extern void ddt_stat_add(ddt_stat_t *dst, const ddt_stat_t *src, uint64_t neg);
  72
  73 extern void ddt_object_name(ddt_t *ddt, enum ddt_type type,
  74     enum ddt_class clazz, char *name);
  75 extern int ddt_object_walk(ddt_t *ddt, enum ddt_type type,
  76     enum ddt_class clazz, uint64_t *walk, ddt_entry_t *dde);
  77 extern int ddt_object_count(ddt_t *ddt, enum ddt_type type,
  78     enum ddt_class clazz, uint64_t *count);
  79 extern int ddt_object_info(ddt_t *ddt, enum ddt_type type,
  80     enum ddt_class clazz, dmu_object_info_t *);
  81
  82 #ifdef  __cplusplus
  83 }
  84 #endif
  85
  86 #endif  /* _SYS_DDT_H */