ioc_load_unload  1116 scsi/cd.c      		struct ioc_load_unload *args = (struct ioc_load_unload *)addr;
ioc_load_unload   233 sys/cdio.h     struct ioc_load_unload {
ioc_load_unload   240 sys/cdio.h     #define		CDIOCLOADUNLOAD	_IOW('c', 26, struct ioc_load_unload)