FreeBSD Manual Pages
libinput-record(1) General Commands Manual libinput-record(1) NAME libinput-record - record kernel events SYNOPSIS libinput record [options] [/dev/input/event0 [/dev/input/event1 ...]] DESCRIPTION The libinput record tool records kernel events from a device and prints them in a format that can later be replayed with the libinput replay(1) tool. This tool needs to run as root to read from the device. The output of this tool is YAML, see FILE FORMAT for more details. By default it prints to stdout unless an output file is provided. For ex- ample, these are valid invocations: libinput record /dev/input/event3 touchpad.yml libinput record recording.yml libinput record --all all-devices.yml libinput record /dev/input/event3 /dev/input/event4 tp-and-keyboard.yml The events recorded are independent of libinput itself, updating or re- moving libinput will not change the event stream. OPTIONS If one or more device nodes are given, this tool opens those device nodes. Otherwise, a list of devices is presented and the user can se- lect the device to record. If unsure, run without any arguments. --help Print help --all Record all /dev/input/event* devices available on the system. This option should be used in exceptional cases only, the out- put file is almost always too noisy and replaying the recording may not be possible. This option requires --output-file and no device nodes may be provided on the commandline. --autorestart=s Terminate the current recording after s seconds of device inac- tivity. This option requires that a --output-file is specified. The output filename is used as prefix, suffixed with the date and time of the recording. The timeout must be greater than 0. -o filename.yml --output-file=filename.yml Specifies the output file to use. If --autorestart is given, the filename is used as prefix only. Where --output-file is not given and the first or last argument is not an input de- vice, the first or last argument will be the output file. --grab Exclusively grab all opened devices. This will prevent events from being delivered to the host system. --show-keycodes Show keycodes as-is in the recording. By default, common keys are obfuscated and printed as KEY_A to avoid information leaks. --with-libinput Record libinput events alongside device events. THIS FEATURE IS EXPERIMENTAL. See section RECORDING LIBINPUT EVENTS for more details. --with-hidraw Record hidraw events alongside device events. DO NOT TYPE SEN- SITIVE DATA. See RECORDING HID REPORTS for more details. RECORDING MULTIPLE DEVICES Sometimes it is necessary to record the events from multiple devices simultaneously, e.g. when an interaction between a touchpad and a key- board causes a bug. libinput record records multiple devices with an identical time offset, allowing for correct replay of the interaction. If multiple devices are recorded, an output filename must be provided. All devices to be recorded must be provided on the commandline, an ex- ample invocation is: libinput record -o tap-bug /dev/input/event3 /dev/input/event7 Note that when recording multiple devices, only the first device is printed immediately, all other devices and their events are printed on exit. RECORDING LIBINPUT EVENTS When the --with-libinput commandline option is given, libinput-record initializes a libinput context for the devices being recorded. Events from these contexts are printed alongside the evdev events. THIS FEA- TURE IS EXPERIMENTAL. The primary purpose of this feature is debugging and event analysis, no caller may rely on any specific format of the events. Note that while libinput and libinput-record see the same events from the device nodes, no guarantee can be given about the correct order of events. libinput events may come in earlier or later than the events from the device nodes and for some devices, libinput may internally al- ter the event stream before processing. Note that the libinput context created by libinput-record does not af- fect the running desktop session and does not (can not!) copy any con- figuration options from that session. RECORDING HID REPORTS When the --with-hidraw commandline option is given, libinput-record searches for the hidraw node(s) of the given devices and prints any in- coming HID reports from those devices. HID reports are not obfuscated and a sufficiently motivated person could recover the key strokes from the logs. Do not type passwords while recording HID reports. FILE FORMAT The output file format is in YAML and intended to be both human-read- able and machine-parseable. Below is a short example YAML file, all keys are detailed further below. Any parsers must ignore keys not specified in the file format descrip- tion. The version number field is only used for backwards-incompatible changes. version: 1 ndevices: 2 libinput: version: 1.10.0 system: os: "fedora:26" kernel: "4.13.9-200.fc26.x86_64" dmi: "dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:..." devices: - node: /dev/input/event9 evdev: # Name: Synaptics TM2668-002 # ID: bus 0x1d vendor 0x6cb product 00 version 00 # Size in mm: 97x68 # Supported Events: # Event type 0 (EV_SYN) #.. abbreviated for man page ... # name: Synaptics TM2668-002 id: [29, 1739, 0, 0] codes: 0: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15] # EV_SYN 1: [272, 325, 328, 330, 333, 334, 335] # EV_KEY 3: [0, 1, 24, 47, 48, 49, 52, 53, 54, 55, 57, 58] # EV_ABS absinfo: 0: [0, 4089, 0, 0, 42] 1: [0, 2811, 0, 0, 41] 24: [0, 255, 0, 0, 0] 47: [0, 4, 0, 0, 0] 48: [0, 15, 0, 0, 0] 49: [0, 15, 0, 0, 0] 52: [0, 1, 0, 0, 0] 53: [0, 4089, 0, 0, 42] 54: [0, 2811, 0, 0, 41] 55: [0, 2, 0, 0, 0] 57: [0, 65535, 0, 0, 0] 58: [0, 255, 0, 0, 0] properties: [0, 2, 4] hid: [12, 23, 34, 45, ...] udev: properties: - ID_INPUT_MOUSE=1 - ID_INPUT=1 quirks: - ModelAppleTouchpad=1 - AttrSizeHint=32x32 events: - hid: time: [ 0, 0] hidraw0: [1, 2, 3, 4] - evdev: - [ 0, 0, 3, 57, 1420] # EV_ABS / ABS_MT_TRACKING_ID 1420 - [ 0, 0, 3, 53, 1218] # EV_ABS / ABS_MT_POSITION_X 1218 - [ 0, 0, 3, 54, 1922] # EV_ABS / ABS_MT_POSITION_Y 1922 - [ 0, 0, 3, 52, 0] # EV_ABS / ABS_MT_ORIENTATION 0 - [ 0, 0, 3, 58, 47] # EV_ABS / ABS_MT_PRESSURE 47 - [ 0, 0, 1, 330, 1] # EV_KEY / BTN_TOUCH 1 - [ 0, 0, 1, 325, 1] # EV_KEY / BTN_TOOL_FINGER 1 - [ 0, 0, 3, 0, 1218] # EV_ABS / ABS_X 1218 - [ 0, 0, 3, 1, 1922] # EV_ABS / ABS_Y 1922 - [ 0, 0, 3, 24, 47] # EV_ABS / ABS_PRESSURE 47 - [ 0, 0, 0, 0, 0] # ------------ SYN_REPORT (0) ------- +0ms - evdev: - [ 0, 11879, 3, 53, 1330] # EV_ABS / ABS_MT_POSITION_X 1330 - [ 0, 11879, 3, 54, 1928] # EV_ABS / ABS_MT_POSITION_Y 1928 - [ 0, 11879, 3, 58, 46] # EV_ABS / ABS_MT_PRESSURE 46 - [ 0, 11879, 3, 0, 1330] # EV_ABS / ABS_X 1330 - [ 0, 11879, 3, 1, 1928] # EV_ABS / ABS_Y 1928 - [ 0, 11879, 3, 24, 46] # EV_ABS / ABS_PRESSURE 46 - [ 0, 11879, 0, 0, 0] # ------------ SYN_REPORT (0) ------- +0ms # second device (if any) - node: /dev/input/event9 evdev: ... Top-level keys are listed below, see the respective subsection for de- tails on each key. version: int The file format version. This version is only increased for backwards-incompatible changes. A parser must ignore unknown keys to be forwards-compatible. ndevices: int The number of device recordings in this file. Always 1 unless recorded with --multiple libinput: {...} A dictionary with libinput-specific information. system: {...} A dictionary with system information. devices: {...} A list of devices containing the description and and events of each device. libinput version: string libinput version system Information about the system os: string Distribution ID and version, see os-release(5) kernel: string Kernel version, see uname(1) dmi: string DMI modalias, see /sys/class/dmi/id/modalias devices Information about and events from the recorded device nodes node: string the device node recorded evdev A dictionary with the evdev device information. hid A list of integers representing the HID report descriptor bytes. udev A dictionary with the udev device information. events A list of dictionaries with the recorded events evdev name: string The device name id: [bustype, vendor, product, version] The data from the struct input_id, bustype, vendor, product, version. codes: {type: [a, b, c ], ...} All evdev types and codes as nested dictionary. The evdev type is the key, the codes are a list. absinfo: {code: [min, max, fuzz, flat, resolution], ...} An array of arrays with 6 decimal elements each, denoting the contents of a struct input_absinfo. The first element is the code (e.g. ABS_X) in decimal format. properties: [0, 1, ...] Array with all INPUT_PROP_FOO constants. May be an empty array. udev properties: list of strings A list of udev properties in the key=value format. This is not the complete list of properties assigned to the device but a subset that is relevant to libinput. These properties may in- clude properties set on a parent device. quirks: list of strings A list of device quirks the key=value format. events A list of the recorded events. The list contains dictionaries Informa- tion about the events. The content is a list of dictionaries, with the string identifying the type of event sequence. { evdev: [ [sec, usec, type, code, value], ...] } Each evdev dictionary contains the contents of a struct in- put_event in decimal format. The last item in the list is al- ways the SYN_REPORT of this event frame. The next event frame starts a new evdev dictionary entry in the parent events list. { hid: hidrawX : [ 12, 34, 56 ], ...] } The hid dictionary contains the hid reports in decimal format, with the hidraw node as key. The special key time denotes the current time when the report was read from the kernel. Note that the kernel does not provide timestamps for hidraw events and the timestamps provided are from clock_gettime(3). They may be greater than a subsequent evdev event's timestamp. NOTES This tool records events from the kernel and is independent of libin- put. In other words, updating or otherwise changing libinput will not alter the output from this tool. libinput itself does not need to be in use to record events. LIBINPUT Part of the libinput(1) suite libinput-record(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | RECORDING MULTIPLE DEVICES | RECORDING LIBINPUT EVENTS | RECORDING HID REPORTS | FILE FORMAT | NOTES | LIBINPUT
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=libinput-record&sektion=1&manpath=FreeBSD+Ports+14.3.quarterly>