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USBD(8) 	       DragonFly System Manager's Manual	       USBD(8)


NAME

     usbd -- supervise USB attach/detach


SYNOPSIS

     usbd [-c configfile] [-d] [-e] [-f device] [-n] [-t timeout] [-v]


DESCRIPTION

     The usbd utility handles USB device attachment and detachment.  The (mul-
     tiple) -f device command line options specify which controllers it should
     handle.  Normally this option is not needed.

     If the ``usb'', ``ohci'' and ``uhci'' modules are not loaded, usbd will
     load them automatically.

     To handle the attachment and detachment of USB devices usbd opens the
     /dev/usb device and reads events from it.	Whenever a device is attached
     or detached the list of actions read from /etc/usbd.conf is searched for
     a matching entry.	If found, the corresponding action is executed.

     The command line options are as follows:

     -c filename
	     Name of configuration file.  The default is /etc/usbd.conf.

     -d      Enable debugging to the standard output, and do not disassociate
	     from the controlling terminal.

     -e      Do one device tree exploration, no event queue handling and then
	     exit.

     -f device
	     Specify the pathname of a USB controller device file.  The flag
	     may be repeated to watch more than one USB controller.  The
	     default is /dev/usb0 through /dev/usb3.  Do not specify the
	     device /dev/usb here.  It is used for events only.

     -n      Do not handle the event queue on /dev/usb.

     -t timeout
	     Set the timeout interval (in seconds) before an exploration hap-
	     pens without being triggered by a connect or disconnect.  A time-
	     out of 0 means that there is no timeout.  The default is 30.

     -v      Be verbose.  Repeating the flag makes usbd more verbose.


FILES

     /etc/usbd.conf
     /dev/usb
     /dev/usb0
     /dev/usb1
     etc.


SEE ALSO

     usb(4), usbd.conf(5)


HISTORY

     The usbd utility appeared in NetBSD 1.4.


AUTHORS

     The usbd driver was written by Lennart Augustsson <augustss@carlstedt.se>
     for the NetBSD project.  The event queue handling in usbd was added by
     Nick Hibma <n_hibma@FreeBSD.org>.

DragonFly 3.7			 July 2, 2006			 DragonFly 3.7

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