the quota of a the user indicated in User= via unit file settings, like the
other resource management concepts. Would mix nicely with DynamicUser=1
+* Introduce "exit" as an EmergencyAction value, and allow to configure a
+ per-unit success/failure exit code to configure. This would be useful for
+ running commands inside of services inside of containers, which could then
+ propagate their failure state all the way up.
+
+* In DynamicUser= mode: before selecting a UID, use disk quota APIs on relevant
+ disks to see if the UID is already in use.
+
* add dissect_image_warn() as a wrapper around dissect_image() that prints
friendly log messages for the returned errors, so that we don't have to
duplicate that in nspawn, systemd-dissect and PID 1.