---
title: writeOnly
framework: system
role: symbol
role_heading: Type Property
path: system/filedescriptor/accessmode/writeonly
---

# writeOnly

Opens the file for writing only.

## Declaration

```swift
static var writeOnly: FileDescriptor.AccessMode { get }
```

## Mentioned in

Adopting Swift File Options

## Discussion

Discussion The corresponding C constant is O_WRONLY.

## See Also

### Creating an Access Mode

- [readOnly](system/filedescriptor/accessmode/readonly.md)
- [readWrite](system/filedescriptor/accessmode/readwrite.md)