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home | helpUSBD(8) FreeBSD 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. It does two things. Through opening the /dev/usb0, /dev/usb1, etc. devices, it enables the kernel to handle change requests from attached hubs. This functionality will be removed when the kernel has kernel threads. The (multiple) -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. The second part is the handling of the attachment and detachment of USB devices. The device /dev/usb is opened and events are read 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 corre- sponding 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>. FreeBSD 11.0 July 12, 1998 FreeBSD 11.0
NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY | AUTHORS
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