---
title: uio_rw
framework: Kernel
role: symbol
platforms: [macOS 10.6+]
path: kernel/uio_rw
---

# uio_rw

## Declaration

```occ
enum uio_rw : unsigned int {
    ...
};
```

## Topics

### Constants

- [UIO_READ](kernel/uio_rw/uio_read.md)
- [UIO_WRITE](kernel/uio_rw/uio_write.md)