---
title: fd_set
framework: Kernel
role: symbol
role_heading: Structure
platforms: [macOS 10.0+]
path: kernel/fd_set
---

# fd_set

## Declaration

```occ
typedef struct fd_set {
    ...
} fd_set;
```

## Topics

### Instance Properties

- [fds_bits](kernel/fd_set/1569380-fds_bits.md)