freebsd-skq/share/man/man4/usfs.4
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.Dd March 18, 2014
.Dt USFS 4
.Os
.Sh NAME
.Nm usfs
.Nd USB device side support for bulk only transport mass storage
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device usb"
.Cd "device usfs"
.Ed
.Pp
Alternatively, to load the driver as a
module at boot time, place the following line in
.Xr loader.conf 5 :
.Bd -literal -offset indent
usfs_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
driver provides support for emulating an USB mass storage device when
the USB stack is activated in USB device side mode.
.Pp
Upon attach the driver creates a RAM disk which can be read and written.
.Sh SEE ALSO
.Xr umass 4
.Xr usb 4
.Sh HISTORY
The
.Nm
driver appeared in FreeBSD 8.