---
title: parameter
framework: kernel
role: symbol
role_heading: Instance Property
path: kernel/iostoragecompletion/1574974-parameter
---

# parameter

Opaque client-supplied pointer.

## Declaration

```occ
void *parameter;
```

## See Also

### Fields

- [target](kernel/iostoragecompletion/1574989-target.md)
- [action](kernel/iostoragecompletion/1575006-action.md)