Avoid hard-coding dom0 in qubes-video-companion script

[DemiMarie]

On my system, webcams are attached to sys-usb. One alternative is to specify the target in qrexec policy instead. I will fix this.

[ElliotKillick]

Yeah, I wasn't quite sure how qrexec-client-vm would work for specifying multiple possible target qubes as it only allowed for specifying one. I figured if I just specify dom0 then because I've installed the qrexec policies (in the RPM package) in dom0 that should work for sys-usb (there is a policy added to allow sys-usb) too.

Is this assumption incorrect or is this alternative you're talking about just a better way of doing this?

[DemiMarie]

Yeah, I wasn't quite sure how qrexec-client-vm would work for specifying multiple possible target qubes as it only allowed for specifying one. I figured if I just specify dom0 then because I've installed the qrexec policies (in the RPM package) in dom0 that should work for sys-usb (there is a policy added to allow sys-usb) too.

Is this assumption incorrect or is this alternative you're talking about just a better way of doing this?

I usually use @default and use target= to direct the call to the correct qube.

[pietrushnic]

I have the same problem using v1.0.0-1 deb