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Man Pages


Manual Reference Pages  -  DEVCTL (8)

NAME

devctl - device control utility

CONTENTS

Synopsis
Description
See Also
History

SYNOPSIS

devctl attach device devctl detach [-f] device devctl disable [-f] device devctl enable device devctl set driver [-f] device driver

DESCRIPTION

The devctl utility adjusts the state of individual devices in the kernel’s internal device hierarchy. Each invocation of devctl consists of a single command followed by command-specific arguments. Each command operates on a single device specified via the device argument. The device may be specified either as the name of an existing device or as a bus-specific address. More details on supported address formats can be found in devctl(3).

The following commands are supported:
attach device
  Force the kernel to re-probe the device. If a suitable driver is found, it is attached to the device.
[-f] device
  Detach the device from its current device driver. If the -f flag is specified, the device driver will be detached even if the device is busy.
[-f] device
  Disable a device. If the device is currently attached to a device driver, the device driver will be detached from the device, but the device will retain its current name. If the -f flag is specified, the device driver will be detached even if the device is busy.
enable device
  Enable a device. The device will probe and attach if a suitable device driver is found. Note that this can re-enable a device disabled at boot time via a loader tunable.
[-f] device driver
  Force the device to use a device driver named driver. If the device is already attached to a device driver and the -f flag is specified, the device will be detached from its current device driver before it is attached to the new device driver. If the device is already attached to a device driver and the -f flag is not specified, the device will not be changed.

SEE ALSO

devctl(3), devinfo(8)

HISTORY

The devctl utility first appeared in
.Fx 10.3 .
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