Inhibit temporarily inhibit signals from shutting down Libpod.

Register registers a function that will be executed when Podman is terminated by a signal.

SetExitCode when we exit after we ran all shutdown handlers, it should be positive.

Start begins handling SIGTERM and SIGINT and will run the given on-signal handlers when one is called and then exit with the exit code of 1 if not overwritten with SetExitCode().

Stop the shutdown signal handler.

Uninhibit stop inhibiting signals from shutting down Libpod.

Unregister un-registers a given shutdown handler.