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vfio-win10/roles/win10/files/vfio-usb

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2021-03-04 22:03:16 +00:00
#!/bin/python3
import os
import sys
import logging
import argparse
import subprocess
from tempfile import NamedTemporaryFile
import evdev
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger()
virsh_logger = logging.getLogger('virsh')
usb_xmls = []
def listen():
logger.info('Listening for events on %s', args.evdev_kbd)
device = evdev.InputDevice(args.evdev_kbd)
left_ctrl = False
right_ctrl = False
triggered = False
grabbed = False
for event in device.read_loop():
logger.debug('Got event: %s', event)
if grabbed and event.code != 0:
grabbed = False
on_release()
if event.code == evdev.ecodes.ecodes['KEY_LEFTCTRL']:
left_ctrl = event.value != 0
elif event.code == evdev.ecodes.ecodes['KEY_RIGHTCTRL']:
right_ctrl = event.value != 0
if left_ctrl and right_ctrl:
triggered = True
elif triggered and not left_ctrl and not right_ctrl:
triggered = False
grabbed = True
on_grab()
def on_grab():
logger.info('Grabbed')
for usb_xml in usb_xmls:
invoke_virsh('attach-device', args.domain, usb_xml.name)
def on_release():
logger.info('Released')
for usb_xml in usb_xmls:
invoke_virsh('detach-device', args.domain, usb_xml.name)
def invoke_virsh(subcommand, domain, xml_name):
proc = subprocess.Popen(('virsh', subcommand, domain, xml_name),
encoding='utf8',
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = proc.communicate()
for line in stdout.strip().splitlines():
virsh_logger.info(line)
for line in stderr.strip().splitlines():
virsh_logger.error(line)
if __name__ == '__main__':
if os.geteuid() != 0:
logger.error('This script must be run as root')
sys.exit(1)
parser = argparse.ArgumentParser()
parser.add_argument('--evdev-kbd',
help='The evdev keyboard device to read eg: /dev/input/...',
required=True)
parser.add_argument('domain',
help='The libvirt domain to attach the usb devices to')
parser.add_argument('usb_ids',
help='The ids of the usb devices to attach, formatted as idVendor:idProduct',
nargs='+')
args = parser.parse_args()
logger.debug(args)
try:
for id_vendor, id_product in [x.split(':') for x in args.usb_ids]:
usb_xml = NamedTemporaryFile('w+')
usb_xml.write('<hostdev mode="subsystem" type="usb" managed="yes">\n')
usb_xml.write(' <source>\n')
usb_xml.write(' <vendor id="0x%s"/>\n' % id_vendor)
usb_xml.write(' <product id="0x%s"/>\n' % id_product)
usb_xml.write('</source>\n')
usb_xml.write('</hostdev>')
usb_xml.seek(0)
logger.debug('Created usb device xml:\n%s', usb_xml.read())
usb_xmls.append(usb_xml)
listen()
finally:
for usb_xml in usb_xmls:
usb_xml.close()