diff options
Diffstat (limited to 'usr.sbin/usbd/usbd.8')
| -rw-r--r-- | usr.sbin/usbd/usbd.8 | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/usr.sbin/usbd/usbd.8 b/usr.sbin/usbd/usbd.8 index 0f3f5ef..c56a45b 100644 --- a/usr.sbin/usbd/usbd.8 +++ b/usr.sbin/usbd/usbd.8 @@ -42,15 +42,36 @@ .Nd supervise USB attach/detach .Sh SYNOPSIS .Nm +.Op Fl c Ar configfile .Op Fl d +.Op Fl e .Op Fl f Ar device +.Op Fl n .Op Fl t Ar timeout .Op Fl v .Sh DESCRIPTION .Nm -handles the USB device attachment and detachment. +handles the USB device attachment and detachment. It does two things. +Through opening the +.Pa /dev/usb0 , +.Pa /dev/usb1 , +etc. devices, it enables the kernel to do handle change requests from +attached hubs. This functionality will be removed when the kernel has +kernel threads. The (multiple) +.Fl f Ar device +command line options specify which controllers it should handle. +Normally this option is not needed. .Pp -The options are as follows: +The second part is the handling of the attachment and detachment of USB +devices. The device +.Pa /dev/usb +is opened and events are read from it. Whenever a device is attached or +detached the list of actions read from +.Pa /etc/usbd.conf +are searched for a matching entry. If found, the corresponding action is +executed. +.Pp +The command line options are as follows: .Bl -tag -width Ds .It Fl c Ar filename Name of configuration file. The default is @@ -59,7 +80,7 @@ Name of configuration file. The default is Enable debugging to the standard output, and do not disassociate from the controlling terminal. .It Fl e -Do one device tree exploration and then exit. +Do one device tree exploration, no event queue handling and then exit. .It Fl f Ar device Specify the pathname of a USB controller device file. The flag may be repeated to watch more than one USB controller. |
