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

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H5O_native_info_t Struct Reference

`#include <src/H5Opublic.h>`

## Detailed Description

Native file format information struct for objects. (For H5Oget_native_info(), H5Oget_native_info_by_name(), H5Oget_native_info_by_idx())

## Data Fields
H5O_hdr_info_t | hdr
struct { |
H5_ih_info_t attr |
H5_ih_info_t obj |
} | meta_size

## Field Documentation

## ◆ attr

H5_ih_info_t attr

v2 B-tree & heap for attributes

## ◆ hdr

H5O_hdr_info_t hdr

Object header information

## ◆ [struct]

struct { ... } meta_size

Extra metadata storage for obj & attributes

## ◆ obj

H5_ih_info_t obj

v1/v2 B-tree & local/fractal heap for groups, B-tree for chunked datasets

The documentation for this struct was generated from the following file:

- src/H5Opublic.h