nulldriver(7d) [opensolaris man page]

nulldriver(7D)							      Devices							    nulldriver(7D)

NAME

       nulldriver - Null driver

DESCRIPTION

       This driver succeeds probe(9E), attach(9E) and detach(9E) but provides no namespace or functionality.

       In  some  circumstances	having	device nodes bound to nulldriver is expected. For example, prtconf(1M) might capture a nexus driver with a
       nulldriver bound child if the nexus is performing child discovery.

SEE ALSO

       prtconf(1M), attach(9E), detach(9E), probe(9E)

SunOS 5.11							    8 Nov 2008							    nulldriver(7D)

DEVCTL(8)						    BSD System Manager's Manual 						 DEVCTL(8)

NAME

     devctl -- device control utility

SYNOPSIS

     devctl attach device
     devctl detach [-f] device
     devctl disable [-f] device
     devctl enable device
     devctl suspend device
     devctl resume 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.

     detach [-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.

     disable [-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 dis-
	     abled at boot time via a loader tunable.

     suspend device
	     Suspend a device.	This may include placing the device in a reduced power state.

     resume device
	     Resume a suspended device to a fully working state.

     set driver [-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 speci-
	     fied, 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 FreeBSD 11.0.

BSD
								 February 5, 2015							       BSD