# PRDir

Directory structure used with [Directory I/O
Functions](I_O_Functions#Directory_I.2FO_Functions).

## Syntax

```{code}
#include <prio.h>

typedef struct PRDir PRDir;
```

## Description

The opaque structure {ref}`PRDir` represents an open directory in the file
system. The function {ref}`PR_OpenDir` opens a specified directory and
returns a pointer to a {ref}`PRDir` structure, which can be passed to
{ref}`PR_ReadDir` repeatedly to obtain successive entries (files or
subdirectories in the open directory). To close the directory, pass the
{ref}`PRDir` pointer to {ref}`PR_CloseDir`.