> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man9/devclass_get_device.9.md).

# devclass\_get\_device.9

`devclass_get_device` — 将单元号转换为设备

## 名称

`devclass_get_device`

## 概要

```c
#include <sys/param.h>
#include <sys/bus.h>

device_t
devclass_get_device(devclass_t dc, int unit)
```

## 描述

此函数检索具有给定单元号的设备实例并返回它。

## 返回值

如果设备存在，则返回它，否则返回 NULL。

## 参见

[devclass(9)](/man/man9/devclass.9.md), [device(9)](/man/man9/device.9.md)

## 作者

本手册页由 Doug Rabson 编写。


---

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