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We already used `x` in tmpfiles, to ensure systemd did not remove our directories or clean their contents (we really need them to be left unmodified). However, systemd-tmpfiles lets us use more than one directive per line, which means we can safely add an R! (recursive remove on reboot) to these lines to ensure that, if /tmp is not a tmpfs, systemd-tmpfiles will still remove our temporary files, ensuring reboots are still accurately detected. Signed-off-by: Matt Heon <mheon@redhat.com>