UK(4)

NAME
uk - scsi user-level driver

SYNOPSIS
device uk

DESCRIPTION
The uk driver provides support for a process to address devices on the scsi bus for which there is no configured driver.

In FreeBSD releases prior to 2.1, the first unknown device found will be attached as uk0 and the next, uk1 etc. Beginning in 2.1 it is possible to specify what uk unit a device should come on line as; refer to scsi(4) for details on kernel configuration.

A scsi adapter must also be separately configured into the system before this driver makes sense.

KERNEL CONFIGURATION
If an count is given that number of uk devices will be configured into the kernel.

IOCTLS
The uk driver has no ioctls of it's own but rather acts as a medium for the generic scsi(4) ioctls. These are described in sys/scsiio.h.

FILES
/dev/uk[0-255]
    uk{x} is the 'xth'unknown device found.

DIAGNOSTICS
All scsi(4) debug ioctls work on uk devices.

SEE ALSO
sd(4) st(4) cd(4) ch(4) su(4) scsi(4)

HISTORY
The uk driver appeared in 386BSD 0.1