> 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/device_attach.9.md).

# DEVICE\_ATTACH.9

`DEVICE_ATTACH` — 附加设备

## 名称

`DEVICE_ATTACH`

## 概要

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

```c
int
DEVICE_ATTACH(device_t dev)
```

## 描述

在 `DEVICE_PROBE` 方法已被调用并指示设备存在之后，将设备附加到系统。`DEVICE_ATTACH` 方法应初始化硬件并分配其他系统资源（例如 [devfs(4)](/man/man4/devfs.4.md) 条目）。

实现总线的设备应使用此方法探测附加到该总线的设备是否存在，并将其作为子设备添加。如果与 [bus\_attach\_children(9)](/man/man9/bus_attach_children.9.md) 结合使用，子设备将被自动探测并附加。

## 返回值

成功时返回零，否则返回一个适当的错误。

## 参见

[devfs(4)](/man/man4/devfs.4.md), [bus\_attach\_children(9)](/man/man9/bus_attach_children.9.md), [device(9)](/man/man9/device.9.md), [DEVICE\_DETACH(9)](/man/man9/device_detach.9.md), [DEVICE\_IDENTIFY(9)](/man/man9/device_identify.9.md), [DEVICE\_PROBE(9)](/man/man9/device_probe.9.md), [DEVICE\_SHUTDOWN(9)](/man/man9/device_shutdown.9.md)

## 作者

本手册页由 Doug Rabson <dfr@FreeBSD.org> 编写。


---

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