USBD(8) BSD System Manager's Manual USBD(8)NAMEusbd — supervise USB attach/detach
SYNOPSISusbd [-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 ALSOusb(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⟩.
BSD July 2, 2006 BSD
