---
title: "IOServiceOpenAsFileDescriptor(_:_:)"
framework: IOKit
role: symbol
role_heading: Function
platforms: [macOS 10.0+]
path: iokit/1514879-ioserviceopenasfiledescriptor
---

# IOServiceOpenAsFileDescriptor(_:_:)

## Declaration

```swift
func IOServiceOpenAsFileDescriptor(_ service: io_service_t, _ oflag: Int32) -> Int32
```