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Add USB passthrough documentation

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Marek Marczykowski-Górecki 2016-06-18 01:28:14 +02:00
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common-tasks/usb.md
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@ -252,6 +252,47 @@ Add a line like this one to the top of the file:
You can now use your USB keyboard.
Attaching a single USB device to a qube (USB passthrough)
------------------------------------------------
Stating with Qubes 3.2, it is possible to attach a single USB device to any
Qube. While this is useful feature, it should be used with care, because there
are [many security implications][usb-challenges] from using USB devices and USB
passthrough will **expose your target qube** for most of them. If possible, use use
method specific for particular device type (for example block devices described
above), instead of this generic one.
To use this feature, you need to install `qubes-usb-proxy` package in the
templates used for USB qube and qubes you want to connect USB devices to.
Listing available USB devices:
[user@dom0 ~]$ qvm-usb
sys-usb:2-4 04ca:300d 04ca_300d
sys-usb:2-5 058f:3822 058f_USB_2.0_Camera
sys-usb:2-1 03f0:0641 PixArt_HP_X1200_USB_Optical_Mouse
Attaching selected USB device:
[user@dom0 ~]$ qvm-usb -a conferences sys-usb:2-5
[user@dom0 ~]$ qvm-usb
conferences:2-1 058f:3822 058f_USB_2.0_Camera
sys-usb:2-4 04ca:300d 04ca_300d
sys-usb:2-5 058f:3822 058f_USB_2.0_Camera (attached to conferences)
sys-usb:2-1 03f0:0641 PixArt_HP_X1200_USB_Optical_Mouse
Now, you can use your USB device (camera in this case) in `conferences` qube.
When you finish, detach the device:
[user@dom0 ~]$ qvm-usb -d sys-usb:2-5
[user@dom0 ~]$ qvm-usb
sys-usb:2-4 04ca:300d 04ca_300d
sys-usb:2-5 058f:3822 058f_USB_2.0_Camera
sys-usb:2-1 03f0:0641 PixArt_HP_X1200_USB_Optical_Mouse
This feature is not yet available in Qubes Manager.
[mass-storage]: https://en.wikipedia.org/wiki/USB_mass_storage_device_class
[Assigning Devices]: /doc/assigning-devices/
@ -263,4 +304,4 @@ You can now use your USB keyboard.
[faq-usbvm]: /doc/user-faq/#i-created-a-usbvm-and-assigned-usb-controllers-to-it-now-the-usbvm-wont-boot
[1618]: https://github.com/QubesOS/qubes-issues/issues/1618
[input-proxy]: https://github.com/qubesos/qubes-app-linux-input-proxy
[usb-challenges]: http://blog.invisiblethings.org/2011/05/31/usb-security-challenges.html