---
title: kev_request
framework: Kernel
role: symbol
platforms: [macOS 10.9+]
path: kernel/kev_request
---

# kev_request

## Declaration

```occ
struct kev_request {
    ...
};
```

## Discussion

Discussion This structure is used with the SIOCSKEVFILT and SIOCGKEVFILT to set and get the control filter setting for a kernel control socket.

## Topics

### Fields

- [total_size](kernel/kev_request/1809281-total_size.md)
- [vendor_code](kernel/kev_request/1446920-vendor_code.md)
- [kev_class](kernel/kev_request/1446933-kev_class.md)
- [kev_subclass](kernel/kev_request/1446979-kev_subclass.md)