Lennart Poettering
380dc8b0a2
This adds basic infrastructure to implement a "clean" operation for unit types. This "clean" operation is supposed to remove on-disk resources of units, and is supposed to be used in a later commit to clean our RuntimeDirectory=, StateDirectory= and so on of service units. Later commits will open this up to the bus, and hook up service units with this. This also adds a new generic ActiveState called UNIT_MAINTENANCE. It's supposed to cover all kinds of "maintainance" state of units. Specifically, this is supposed to cover the "cleaning" operations later added for service units which might take a bit of time. This high-level, generic, abstract state is called UNIT_MAINTENANCE instead of the more specific "UNIT_CLEANING", since I think this should be kept open for different operations possibly later on that could be nicely subsumed under this (for example, maybe a recursive chown()ing operation could be covered by this, and similar).
systemd - System and Service Manager
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