Comment 34 for bug 1951491
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| Maciej Borzecki (maciek-borzecki) wrote | #34 |
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0e1f616
(Get the code!)
I've commented before, but if your desktop session is correctly set up, the systemd --user instance should be available, then a transient scope can be created for snap and proper device access filtering can be set up in that cgroup, thus completing the sandbox. Cgroup v1 works differently, in that there is a separate hierarchy which could be set up for a snap and there's no need to ask ssytemd to set up anything on behalf of the snap. This is no longer the case for v2.
AFAICT gdm/kdm/xdm seem to be able to do that correctly. Most trouble seems to be coming from X2go/vnc or similar solutions which appear to give you a desktop access, but it's half baked, and are either missing session dbus or the systemd --user instance. Perhaps it's not really going through PAM, hence things that would have been set up through pam_systemd are missing.