Michael Vogt
db426d147d
To properly support a shutdown interface with varlink we need the functionality of verify_shutdown_creds(). This is currently dbus only. There are some options: 1. refactor and abstract so that verify_shutdown_creds() is agnostic 2. provide a equivalent function with varlink 3. allow to call it with either a dbus or a varlink message. The most elegant of course is (1) but it makes reviewing harder and has a higher regression risk. It will also be more code. Doing (2) has the risk of drift, i.e. we will need to keep the two functions in sync and not forget about it ever. So this commit opts for (3): allowing either dbus or varlink. This is quite ugly, however the big advantage is that its very simple to review as the dbus/varlink branches mirror each other. And there is no risk of drift the dbus/varlink options are close to each other. It unlikely we get a third bus, so it will most likely stay this way. It is still ugly though so I can understand if this is undesired and I can look into (1) if its too ugly. With this function avaialble logind-varlink.c is now updated to use it.
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