[systemd-bugs] [Bug 82369] option to lock USB ports when no session is opened

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82369

--- Comment #1 from Yves-Alexis <corsac at debian.org> ---
So, it seems that the correct way is to do:

for bus in /sys/bus/usb/usb*;
do
  echo 0 > ${bus}/authorized_default
done

to disable registration of new devices on the USB busses. The devices still get
enumerated by the kernel, but they're not handled by any driver.

Same thing with 1 (or -1) will re-enable the registration.

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