---
title: kIOFBNS_GenerationMask
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.14+]
path: kernel/2980995-anonymous/kiofbns_generationmask
---

# kIOFBNS_GenerationMask

## Declaration

```occ
kIOFBNS_GenerationMask = 0x7fff0000
```