<!--
{
  "availability" : [
    "DriverKit: -",
    "iOS: -",
    "iPadOS: -",
    "macOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "DriverKit",
  "identifier" : "/documentation/DriverKit/IOUserServer",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "DriverKit"
    ],
    "preciseIdentifier" : "c:@S@IOUserServer"
  },
  "title" : "IOUserServer"
}
-->

# IOUserServer

A system-managed service.

```
class IOUserServer;
```

## Overview

You do not create or use instances of this class directly. The system creates them to manage individual services.

## Topics

### Configuring the User Server

[`static kern_return_t Create(const char name[64], uint64_t tag, uint64_t options, OSString *bundleID, IOUserServer **server);`](/documentation/DriverKit/IOUserServer/Create)

[`virtual bool init();`](/documentation/DriverKit/IOUserServer/init)

[`virtual void free();`](/documentation/DriverKit/IOUserServer/free)

### Managing the Server Lifecycle

[`virtual kern_return_t LoadModule(const char path[1024]);`](/documentation/DriverKit/IOUserServer/LoadModule)

[`virtual kern_return_t Exit(const char reason[1024]);`](/documentation/DriverKit/IOUserServer/Exit)

### Instance Methods

[`virtual kern_return_t RegisterService();`](/documentation/DriverKit/IOUserServer/RegisterService)

### Instance Methods

[`virtual kern_return_t Panic(const char reason[1024]);`](/documentation/DriverKit/IOUserServer/Panic)

## Relationships

### Inherits From

[`IOService`](/documentation/DriverKit/IOService)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)