---
title: kExtFieldsValidMask
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1646151-anonymous/kextfieldsvalidmask
---

# kExtFieldsValidMask

## Declaration

```occ
kExtFieldsValidMask = (1 << kExtFieldsValidBit)
```