bus_name_has_owner   69 src/libsystemd/sd-bus/bus-util.h int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error);
bus_name_has_owner  445 src/login/logind-session.c                 if (bus_name_has_owner(s->manager->bus, controller, NULL) > 0)