特殊:Badtitle/NS100:VirtualBox/USB

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To get USB support, you need the PUEL (non-free) version. Via the GUI, there is an option to enable USB. Furthermore, your user must be able to access /proc/bus/usb/* Since Gutsy, /proc/bus/usb is not mounted by default. For Gutsy and Hardy you just need to edit /etc/init.d/mountdevsubfs.sh and uncomment the following lines:

        #
        # Magic to make /proc/bus/usb work
        #
        mkdir -p /dev/bus/usb/.usbfs
        domount usbfs "" /dev/bus/usb/.usbfs -obusmode=0700,devmode=0600,listmode=0644
        ln -s .usbfs/devices /dev/bus/usb/devices
        mount --rbind /dev/bus/usb /proc/bus/usb

In Intrepid the lines required to mount usbfs have been removed entirely, so you need to add the following lines to /etc/init.d/mountdevsubfs.sh at the end of the do_start() function. Note that this is subtly different than the lines required for Gutsy/Hardy. the arguments for the domount function are slightly different from previous versions.

        #
        # Magic to make /proc/bus/usb work
        #
        mkdir -p /dev/bus/usb/.usbfs
        domount usbfs "" /dev/bus/usb/.usbfs usbfs -obusmode=0700,devmode=0600,listmode=0644
        ln -s .usbfs/devices /dev/bus/usb/devices
        mount --rbind /dev/bus/usb /proc/bus/usb

Then run the script that you just edited:

sudo /etc/init.d/mountdevsubfs.sh start

In order to give users in the vboxusers group write permissions to the devices in /proc/bus/usb, you'll need to edit some rules in /etc/udev/rules.d. Under Gutsy, edit /etc/udev/rules.d/40-permissions.rules to say the following:

# USB devices (usbfs replacement)
SUBSYSTEM=="usb_device",                MODE="0664", GROUP="vboxusers"

Under Hardy and Intrepid, edit /etc/udev/rules.d/40-basic-permissions.rules to say the following:

# USB devices (usbfs replacement)
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", MODE="0664", GROUP="vboxusers"
SUBSYSTEM=="usb_device",                MODE="0664", GROUP="vboxusers"

Then, restart the udev service:

sudo /etc/init.d/udev restart

Now, if you haven't done it already, make sure your user is part of the group vboxusers using the following command:

sudo usermod -G vboxusers -a `whoami`

Finally, log out and login again to apply these changes. See also: [1]