def _handle_device_event(self, device):
"""
:type device: Device
"""
# log.debug('Event: %r for %r', device.action, device)
#TODO: udev_device_get_ifindex
ifindex = device.get('IFINDEX', None)
if ifindex is None:
log.debug('Skipping device without IFINDEX %r', device)
return
ifindex = int(ifindex)
if device.parent is None:
log.debug('Skipping device without parent (non-hardware), %r', device)
return
# devtype = device.device_type
# if devtype is not None:
# log.debug('Device %r have type %r, so skipped', device, devtype)
# return
# noinspection PyUnresolvedReferences
action = device.action
# TODO: add may appear AFTER coldplug, this is OK (races)
if (action is None) or (action == u'add'):
if self.udev_version >= 165:
# TODO: handle udev's initializations errors instead of raise
if not device.is_initialized:
device_path = device.device_path
log.debug('Device is not initialized. re-reading %s', device_path)
device = Device.from_path(self.context, device_path)
if not device.is_initialized:
raise Exception('Double-getting device still not initializd')
else:
device = Device.from_path(self.context, device.device_path)
#TODO: udev_device_get_ifindex
self.netdevices[ifindex] = PhysicalEthernet(device)
return
if action == u'remove':
try:
old_eth_device = self.netdevices.pop(ifindex)
except KeyError:
log.exception('Device removal error (no such device). Scheduling full rescan.', device, ifindex)
IOLoop.instance().add_callback(self.rescan_devices)
return
old_eth_device.close()
def __iter__(self):
"""
Iterate over all matching devices.
Yield :class:`Device` objects.
"""
libudev.udev_enumerate_scan_devices(self)
entry = libudev.udev_enumerate_get_list_entry(self)
for name, _ in udev_list_iterate(entry):
yield Device.from_sys_path(self.context, name)
def new_func(context, device, recursive=True):
"""
New function wraps yielded value in Device.
:param `Context` context: udev context
:param `Device` device: device to start from
:param bool recursive: if False, only show immediate slaves
"""
for directory in func(device.sys_path, recursive):
yield Device.from_sys_path(context, directory)
def __iter__(self):
"""
Iterate over all matching devices.
Yield :class:`Device` objects.
"""
self._libudev.udev_enumerate_scan_devices(self)
entry = self._libudev.udev_enumerate_get_list_entry(self)
for name, _ in udev_list_iterate(self._libudev, entry):
yield Device.from_sys_path(self.context, name)
def __iter__(self):
"""
Iterate over all matching devices.
Yield :class:`Device` objects.
"""
self._libudev.udev_enumerate_scan_devices(self)
entry = self._libudev.udev_enumerate_get_list_entry(self)
for name, _ in udev_list_iterate(self._libudev, entry):
try:
yield Device.from_sys_path(self.context, name)
except DeviceNotFoundAtPathError:
continue
def _receive_device(self):
"""Receive a single device from the monitor.
Return the received :class:`Device`, or ``None`` if no device could be
received.
"""
while True:
try:
device_p = self._libudev.udev_monitor_receive_device(self)
return Device(self.context, device_p) if device_p else None
except EnvironmentError as error:
if error.errno in (errno.EAGAIN, errno.EWOULDBLOCK):
# No data available
return None
elif error.errno == errno.EINTR:
# Try again if our system call was interrupted
continue
else:
raise