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diff --git a/usbhid-dump.8.in b/usbhid-dump.8.in new file mode 100644 index 0000000..b4c90d0 --- /dev/null +++ b/usbhid-dump.8.in @@ -0,0 +1,102 @@ +.\"SPDX-License-Identifier: GPL-2.0-or-later +.\" Copyright Nikolai Kondrashov <spbnick@gmail.com> +.TH usbhid-dump "8" "February 2012" "usbutils-VERSION" "Linux USB Utilities" +.IX usbhid-dump +.SH NAME +usbhid-dump \- dump USB HID device report descriptors and streams +.SH SYNOPSIS +.B usbhid-dump +[OPTION]... +.SH DESCRIPTION +.B usbhid-dump +uses +.B libusb +to dump report descriptors and streams from HID (human interface device) +interfaces of USB devices. By default, it dumps HID interfaces of all +connected USB devices, but could be limited to a subset of them, or to a single +interface, using options. + +NOTE: usbhid-dump detaches kernel drivers from the interfaces it dumps and uses +them exclusively, so no other program receives the input in the meantime. The +report descriptor dumping is instantaneous, but the stream dumping continues +until terminated with SIGINT (^C from the terminal) or a timeout expires. + +If you accidentally start dumping a stream from the USB keyboard you use to +control the terminal, the system will stop receiving the input and you won't +be able to terminate usbhid-dump. Just stop your input and wait until the +timeout expires. The stream dumping will stop, the keyboard will be +reattached to the kernel driver and you will regain control. + +The default stream dumping timeout is 60 seconds and could be changed with the +-t option. +.SH OPTIONS +.TP +.B -h, --help +Output a help message and exit. +.TP +.B -v, --version +Output version information and exit. +.TP +.B -s, -a, --address=bus[:dev] +Limit interfaces by bus number and device address. Both 1-255, decimal. +Zeroes match any bus or device. +.TP +.B -d, -m, --model=vid[:pid] +Limit interfaces by device vendor and product IDs. Both 1-FFFF, hexadecimal. +Zeroes match any vendor or product. +.TP +.B -i, --interface=NUMBER +Limit interfaces by number (0-254), decimal. 255 matches any interface. +.TP +.B -e, --entity=STRING +The entity to dump: either "descriptor", "stream" or "all". The value can be +abbreviated down to one letter. The default is "descriptor". +.TP +.B -t, --stream-timeout=NUMBER +Stream interrupt transfer timeout, ms. Zero means infinity. The default is +60000 (60 seconds). +.TP +.B -p, --stream-paused +Start with the stream dump output paused. +.TP +.B -f, --stream-feedback +Enable stream dumping feedback: print a dot to stderr for every transfer +dumped. +.SH SIGNALS +.TP +.B USR1/USR2 +Pause/resume stream dump output. +.SH OUTPUT FORMAT +.B usbhid-dump +outputs dumps in chunks. Each chunk is separated by an empty line and starts +with the following header line: + +BUS:DEVICE:INTERFACE:ENTITY TIMESTAMP + +Here, BUS, DEVICE and INTERFACE are bus, device and interface numbers +respectively. ENTITY is either "DESCRIPTOR" or "STREAM". TIMESTAMP is +timestamp in seconds since epoch. + +After the header the actual dump data follows as hex bytes. A descriptor +chunk includes the whole report descriptor. Every stream chunk includes a +whole report, usually, but if a report is bigger than endpoint's +wMaxPacketSize, it will span several chunks. +.SH EXAMPLES +.TP +Dump report descriptor for a device with address 3 on bus number 2: +.B usbhid-dump -a 2:3 + +.TP +Dump report stream for a device with vendor ID 0x5543 and product ID 0x0005: +.B usbhid-dump -m 5543:0005 -es + +.TP +Dump report descriptor from interface 1 of a device with vendor ID 0x5543: +.B usbhid-dump -m 5543 -i 1 -ed + +.TP +Dump report streams from all HID interfaces of all USB devices (caution: you will lose control over the terminal if you use USB keyboard): +.B usbhid-dump -es + +.SH AUTHOR +Nikolai Kondrashov <spbnick@gmail.com> |