# PR_Sync

Synchronizes any buffered data for a file descriptor to its backing
device (disk).

## Syntax

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

PRStatus PR_Sync(PRFileDesc *fd);
```

### Parameter

The function has the following parameter:

`fd`

: Pointer to a {ref}`PRFileDesc` object representing a file.

### Returns

The function returns one of the following values:

- On successful completion, `PR_SUCCESS`.
- If the function fails, `PR_FAILURE`.

## Description

{ref}`PR_Sync` writes all the in-memory buffered data of the specified file
to the disk.