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| HDF5 Last Updated on 2026-07-28 The HDF5 Field Guide

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H5VLnative.h File Reference
`#include "H5Apublic.h"`
`#include "H5VLpublic.h"`

## Data Structures
struct | H5VL_native_attr_iterate_old_t
union | H5VL_native_attr_optional_args_t
struct | H5VL_native_dataset_chunk_read_t
struct | H5VL_native_dataset_chunk_write_t
struct | H5VL_native_dataset_get_chunk_info_by_coord_t
struct | H5VL_native_dataset_get_chunk_info_by_idx_t
struct | H5VL_native_dataset_get_chunk_storage_size_t
struct | H5VL_native_dataset_get_num_chunks_t
struct | H5VL_native_dataset_get_vlen_buf_size_t
union | H5VL_native_dataset_optional_args_t
struct | H5VL_native_file_get_file_image_t
struct | H5VL_native_file_get_free_sections_t
struct | H5VL_native_file_get_freespace_t
struct | H5VL_native_file_get_info_t
struct | H5VL_native_file_get_mdc_image_info_t
struct | H5VL_native_file_get_mdc_logging_status_t
struct | H5VL_native_file_get_mdc_size_t
struct | H5VL_native_file_get_page_buffering_stats_t
struct | H5VL_native_file_get_vfd_handle_t
union | H5VL_native_file_optional_args_t
struct | H5VL_native_file_set_libver_bounds_t
struct | H5VL_native_group_get_objinfo_t
struct | H5VL_native_group_iterate_old_t
union | H5VL_native_group_optional_args_t
struct | H5VL_native_object_get_comment_t
struct | H5VL_native_object_get_native_info_t
union | H5VL_native_object_optional_args_t

## Macros
#define | H5VL_NATIVE (H5OPEN H5VL_NATIVE_g)
#define | H5VL_NATIVE_ATTR_ITERATE_OLD 0 /* H5Aiterate (deprecated routine) */
#define | H5VL_NATIVE_DATASET_CHUNK_ITER 10
#define | H5VL_NATIVE_DATASET_CHUNK_READ 6
#define | H5VL_NATIVE_DATASET_CHUNK_WRITE 7
#define | H5VL_NATIVE_DATASET_FORMAT_CONVERT 0
#define | H5VL_NATIVE_DATASET_GET_CHUNK_INDEX_TYPE 1
#define | H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_COORD 5
#define | H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_IDX 4
#define | H5VL_NATIVE_DATASET_GET_CHUNK_STORAGE_SIZE 2
#define | H5VL_NATIVE_DATASET_GET_NUM_CHUNKS 3
#define | H5VL_NATIVE_DATASET_GET_OFFSET 9
#define | H5VL_NATIVE_DATASET_GET_VLEN_BUF_SIZE 8
#define | H5VL_NATIVE_FILE_CLEAR_ELINK_CACHE 0
#define | H5VL_NATIVE_FILE_FORMAT_CONVERT 17
#define | H5VL_NATIVE_FILE_GET_EOA 21
#define | H5VL_NATIVE_FILE_GET_FILE_IMAGE 1
#define | H5VL_NATIVE_FILE_GET_FREE_SECTIONS 2
#define | H5VL_NATIVE_FILE_GET_FREE_SPACE 3
#define | H5VL_NATIVE_FILE_GET_INFO 4
#define | H5VL_NATIVE_FILE_GET_MDC_CONF 5
#define | H5VL_NATIVE_FILE_GET_MDC_HR 6
#define | H5VL_NATIVE_FILE_GET_MDC_IMAGE_INFO 20
#define | H5VL_NATIVE_FILE_GET_MDC_LOGGING_STATUS 16
#define | H5VL_NATIVE_FILE_GET_MDC_SIZE 7
#define | H5VL_NATIVE_FILE_GET_METADATA_READ_RETRY_INFO 12
#define | H5VL_NATIVE_FILE_GET_MIN_DSET_OHDR_FLAG 24
#define | H5VL_NATIVE_FILE_GET_MPI_ATOMICITY 26
#define | H5VL_NATIVE_FILE_GET_PAGE_BUFFERING_STATS 19
#define | H5VL_NATIVE_FILE_GET_SIZE 8
#define | H5VL_NATIVE_FILE_GET_VFD_HANDLE 9
#define | H5VL_NATIVE_FILE_INCR_FILESIZE 22
#define | H5VL_NATIVE_FILE_POST_OPEN 28
#define | H5VL_NATIVE_FILE_RESET_MDC_HIT_RATE 10
#define | H5VL_NATIVE_FILE_RESET_PAGE_BUFFERING_STATS 18
#define | H5VL_NATIVE_FILE_SET_LIBVER_BOUNDS 23
#define | H5VL_NATIVE_FILE_SET_MDC_CONFIG 11
#define | H5VL_NATIVE_FILE_SET_MIN_DSET_OHDR_FLAG 25
#define | H5VL_NATIVE_FILE_SET_MPI_ATOMICITY 27
#define | H5VL_NATIVE_FILE_START_MDC_LOGGING 14
#define | H5VL_NATIVE_FILE_START_SWMR_WRITE 13
#define | H5VL_NATIVE_FILE_STOP_MDC_LOGGING 15
#define | H5VL_NATIVE_GROUP_GET_OBJINFO 1 /* HG5Gget_objinfo (deprecated routine) */
#define | H5VL_NATIVE_GROUP_ITERATE_OLD 0 /* HG5Giterate (deprecated routine) */
#define | H5VL_NATIVE_NAME "native"
#define | H5VL_NATIVE_OBJECT_ARE_MDC_FLUSHES_DISABLED 4 /* H5Oare_mdc_flushes_disabled */
#define | H5VL_NATIVE_OBJECT_DISABLE_MDC_FLUSHES 2 /* H5Odisable_mdc_flushes */
#define | H5VL_NATIVE_OBJECT_ENABLE_MDC_FLUSHES 3 /* H5Oenable_mdc_flushes */
#define | H5VL_NATIVE_OBJECT_GET_COMMENT 0 /* H5G|H5Oget_comment, H5Oget_comment_by_name */
#define | H5VL_NATIVE_OBJECT_GET_NATIVE_INFO 5 /* H5Oget_native_info(_by_idx, _by_name) */
#define | H5VL_NATIVE_OBJECT_SET_COMMENT 1 /* H5G|H5Oset_comment, H5Oset_comment_by_name */
#define | H5VL_NATIVE_VALUE H5_VOL_NATIVE /* enum value */
#define | H5VL_NATIVE_VERSION 0

## Functions
herr_t | H5VLnative_addr_to_token (hid_t loc_id, haddr_t addr, H5O_token_t *token)
| Convert a haddr_t address to a native VOL connector token.
herr_t | H5VLnative_token_to_addr (hid_t loc_id, H5O_token_t token, haddr_t *addr)
| Convert a native VOL connector token to a haddr_t address.

## Variables
hid_t | H5VL_NATIVE_g

## Macro Definition Documentation

## ◆ H5VL_NATIVE

#define H5VL_NATIVE (H5OPEN H5VL_NATIVE_g)

## ◆ H5VL_NATIVE_ATTR_ITERATE_OLD

#define H5VL_NATIVE_ATTR_ITERATE_OLD 0 /* H5Aiterate (deprecated routine) */

## ◆ H5VL_NATIVE_DATASET_CHUNK_ITER

#define H5VL_NATIVE_DATASET_CHUNK_ITER 10

H5Dchunk_iter

Since
  1.12.3

## ◆ H5VL_NATIVE_DATASET_CHUNK_READ

#define H5VL_NATIVE_DATASET_CHUNK_READ 6

H5Dchunk_read

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_CHUNK_WRITE

#define H5VL_NATIVE_DATASET_CHUNK_WRITE 7

H5Dchunk_write

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_FORMAT_CONVERT

#define H5VL_NATIVE_DATASET_FORMAT_CONVERT 0

H5Dformat_convert (internal)

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_GET_CHUNK_INDEX_TYPE

#define H5VL_NATIVE_DATASET_GET_CHUNK_INDEX_TYPE 1

H5Dget_chunk_index_type

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_COORD

#define H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_COORD 5

H5Dget_chunk_info_by_coord

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_IDX

#define H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_IDX 4

H5Dget_chunk_info

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_GET_CHUNK_STORAGE_SIZE

#define H5VL_NATIVE_DATASET_GET_CHUNK_STORAGE_SIZE 2

H5Dget_chunk_storage_size

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_GET_NUM_CHUNKS

#define H5VL_NATIVE_DATASET_GET_NUM_CHUNKS 3

H5Dget_num_chunks

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_GET_OFFSET

#define H5VL_NATIVE_DATASET_GET_OFFSET 9

H5Dget_offset

Since
  1.12.0

## ◆ H5VL_NATIVE_DATASET_GET_VLEN_BUF_SIZE

#define H5VL_NATIVE_DATASET_GET_VLEN_BUF_SIZE 8

H5Dvlen_get_buf_size

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_CLEAR_ELINK_CACHE

#define H5VL_NATIVE_FILE_CLEAR_ELINK_CACHE 0

H5Fclear_elink_file_cache

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_FORMAT_CONVERT

#define H5VL_NATIVE_FILE_FORMAT_CONVERT 17

H5Fformat_convert

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_EOA

#define H5VL_NATIVE_FILE_GET_EOA 21

H5Fget_eoa

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_FILE_IMAGE

#define H5VL_NATIVE_FILE_GET_FILE_IMAGE 1

H5Fget_file_image

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_FREE_SECTIONS

#define H5VL_NATIVE_FILE_GET_FREE_SECTIONS 2

H5Fget_free_sections

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_FREE_SPACE

#define H5VL_NATIVE_FILE_GET_FREE_SPACE 3

H5Fget_freespace

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_INFO

#define H5VL_NATIVE_FILE_GET_INFO 4

H5Fget_info1/2

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_MDC_CONF

#define H5VL_NATIVE_FILE_GET_MDC_CONF 5

H5Fget_mdc_config

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_MDC_HR

#define H5VL_NATIVE_FILE_GET_MDC_HR 6

H5Fget_mdc_hit_rate

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_MDC_IMAGE_INFO

#define H5VL_NATIVE_FILE_GET_MDC_IMAGE_INFO 20

H5Fget_mdc_image_info

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_MDC_LOGGING_STATUS

#define H5VL_NATIVE_FILE_GET_MDC_LOGGING_STATUS 16

H5Fget_mdc_logging_status

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_MDC_SIZE

#define H5VL_NATIVE_FILE_GET_MDC_SIZE 7

H5Fget_mdc_size

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_METADATA_READ_RETRY_INFO

#define H5VL_NATIVE_FILE_GET_METADATA_READ_RETRY_INFO 12

H5Fget_metadata_read_retry_info

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_MIN_DSET_OHDR_FLAG

#define H5VL_NATIVE_FILE_GET_MIN_DSET_OHDR_FLAG 24

H5Fget_dset_no_attrs_hint

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_MPI_ATOMICITY

#define H5VL_NATIVE_FILE_GET_MPI_ATOMICITY 26

H5Fget_mpi_atomicity

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_PAGE_BUFFERING_STATS

#define H5VL_NATIVE_FILE_GET_PAGE_BUFFERING_STATS 19

H5Fget_page_buffering_stats

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_SIZE

#define H5VL_NATIVE_FILE_GET_SIZE 8

H5Fget_filesize

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_GET_VFD_HANDLE

#define H5VL_NATIVE_FILE_GET_VFD_HANDLE 9

H5Fget_vfd_handle

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_INCR_FILESIZE

#define H5VL_NATIVE_FILE_INCR_FILESIZE 22

H5Fincrement_filesize

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_POST_OPEN

#define H5VL_NATIVE_FILE_POST_OPEN 28

Adjust file after open, with wrapping context

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_RESET_MDC_HIT_RATE

#define H5VL_NATIVE_FILE_RESET_MDC_HIT_RATE 10

H5Freset_mdc_hit_rate_stats

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_RESET_PAGE_BUFFERING_STATS

#define H5VL_NATIVE_FILE_RESET_PAGE_BUFFERING_STATS 18

H5Freset_page_buffering_stats

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_SET_LIBVER_BOUNDS

#define H5VL_NATIVE_FILE_SET_LIBVER_BOUNDS 23

H5Fset_latest_format/libver_bounds

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_SET_MDC_CONFIG

#define H5VL_NATIVE_FILE_SET_MDC_CONFIG 11

H5Fset_mdc_config

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_SET_MIN_DSET_OHDR_FLAG

#define H5VL_NATIVE_FILE_SET_MIN_DSET_OHDR_FLAG 25

H5Fset_dset_no_attrs_hint

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_SET_MPI_ATOMICITY

#define H5VL_NATIVE_FILE_SET_MPI_ATOMICITY 27

H5Fset_mpi_atomicity

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_START_MDC_LOGGING

#define H5VL_NATIVE_FILE_START_MDC_LOGGING 14

H5Fstart_mdc_logging

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_START_SWMR_WRITE

#define H5VL_NATIVE_FILE_START_SWMR_WRITE 13

H5Fstart_swmr_write

Since
  1.12.0

## ◆ H5VL_NATIVE_FILE_STOP_MDC_LOGGING

#define H5VL_NATIVE_FILE_STOP_MDC_LOGGING 15

H5Fstop_mdc_logging

Since
  1.12.0

## ◆ H5VL_NATIVE_GROUP_GET_OBJINFO

#define H5VL_NATIVE_GROUP_GET_OBJINFO 1 /* HG5Gget_objinfo (deprecated routine) */

## ◆ H5VL_NATIVE_GROUP_ITERATE_OLD

#define H5VL_NATIVE_GROUP_ITERATE_OLD 0 /* HG5Giterate (deprecated routine) */

## ◆ H5VL_NATIVE_NAME

#define H5VL_NATIVE_NAME "native"

## ◆ H5VL_NATIVE_OBJECT_ARE_MDC_FLUSHES_DISABLED

#define H5VL_NATIVE_OBJECT_ARE_MDC_FLUSHES_DISABLED 4 /* H5Oare_mdc_flushes_disabled */

## ◆ H5VL_NATIVE_OBJECT_DISABLE_MDC_FLUSHES

#define H5VL_NATIVE_OBJECT_DISABLE_MDC_FLUSHES 2 /* H5Odisable_mdc_flushes */

## ◆ H5VL_NATIVE_OBJECT_ENABLE_MDC_FLUSHES

#define H5VL_NATIVE_OBJECT_ENABLE_MDC_FLUSHES 3 /* H5Oenable_mdc_flushes */

## ◆ H5VL_NATIVE_OBJECT_GET_COMMENT

#define H5VL_NATIVE_OBJECT_GET_COMMENT 0 /* H5G|H5Oget_comment, H5Oget_comment_by_name */

## ◆ H5VL_NATIVE_OBJECT_GET_NATIVE_INFO

#define H5VL_NATIVE_OBJECT_GET_NATIVE_INFO 5 /* H5Oget_native_info(_by_idx, _by_name) */

## ◆ H5VL_NATIVE_OBJECT_SET_COMMENT

#define H5VL_NATIVE_OBJECT_SET_COMMENT 1 /* H5G|H5Oset_comment, H5Oset_comment_by_name */

## ◆ H5VL_NATIVE_VALUE

#define H5VL_NATIVE_VALUE H5_VOL_NATIVE /* enum value */

## ◆ H5VL_NATIVE_VERSION

#define H5VL_NATIVE_VERSION 0

## Variable Documentation

## ◆ H5VL_NATIVE_g

hid_t H5VL_NATIVE_g
| extern