---
title: uio_setresid
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.4+]
path: kernel/1442227-uio_setresid
---

# uio_setresid

## Declaration

```occ
void uio_setresid(uio_t a_uio, user_ssize_t a_value);
```