sd_event_add_exit 3094 src/libsystemd/sd-bus/sd-bus.c         r = sd_event_add_exit(bus->event, &bus->quit_event_source, quit_callback, bus);
sd_event_add_exit  882 src/libsystemd/sd-rtnl/sd-rtnl.c         r = sd_event_add_exit(rtnl->event, &rtnl->exit_event_source, exit_callback, rtnl);
sd_event_add_exit   87 src/systemd/sd-event.h int sd_event_add_exit(sd_event *e, sd_event_source **s, sd_event_handler_t callback, void *userdata);