I am trying to get a list of currently plugged in USB devices in Ubuntu 10.10 and monitor changes that happen, like devices being plugged in or out using UDev and D-BUS. I'm fairly new to programming using D-BUS. I saw one example: Linux : How to detect is usb keyboard is plugged and unplugged only that one uses HAL and I know that HAL is deprecated. I found some working code, modified it a bit, only it doesn't work for any device only storage devices such as usb sticks, media players or cd-rom devices. I want the whole thing mice, keyboards, usb cameras chargers anything that is plugged in to the USB I want my program to know about it. This is basically what I have ( http://moserei.de/2010/01/08/accessing-devicekit-with-dbus-and-python.html ):
import dbus
import gobject
from dbus.mainloop.glib import DBusGMainLoop
def device_added_callback(device):
print 'Device %s was added' % (device)
def device_changed_callback(device):
print 'Device %s was changed' % (device)
#must be done before connecting to DBus
DBusGMainLoop(set_as_default=True)
bus = dbus.SystemBus()
proxy = bus.get_object("org.freedesktop.UDisks",
"/org/freedesktop/UDisks")
iface = dbus.Interface(proxy, "org.freedesktop.UDisks.Device")
devices = iface.get_dbus_method('EnumerateDevices')()
print '%s' % (devices)
#addes two signal listeners
iface.connect_to_signal('DeviceAdded', device_added_callback)
iface.connect_to_signal('DeviceChanged', device_changed_callback)
#start the main loop
mainloop = gobject.MainLoop()
mainloop.run()
Any help would be apreciated. Thank you in advance, Calota Romeo
The udisks D-Bus service, obviously, only reports disks.
Just monitor udev directly (through libudev, through pyudev).
import pyudev
context = pyudev.Context()
monitor = pyudev.Monitor.from_netlink(context)
observer = pyudev.pygtk.GUDevMonitorObserver(monitor)
observer.connect('device-added', device_added_callback)
observer.connect('device-changed', device_changed_callback)
monitor.enable_receiving()
mainloop = gobject.MainLoop()
mainloop.run()