* Run most system services with cgroupfs read-only and procfs with a more secure mode (doesn't work, since the hidepid= option is per-pid-namespace, not per-mount)
* sd-event: generate a failure of a default event loop is executed out-of-thread
* Run most system services with cgroupfs read-only and procfs with a more secure mode (doesn't work, since the hidepid= option is per-pid-namespace, not per-mount)
* sd-event: generate a failure of a default event loop is executed out-of-thread