MTIOC
#define MTIOCTOP (MTIOC|1) /* do a mag tape op */
#define MTIOCGET (MTIOC|2) /* get tape status */
#define MTIOCGETDRIVETYPE (MTIOC|3) /* get tape config data */
#define MTIOCPERSISTENT (MTIOC|4) /* turn on persistent errors */
#define MTIOCPERSISTENTSTATUS (MTIOC|5) /* query persis. err status */
#define MTIOCLRERR (MTIOC|6) /* clear a persitent error */
#define MTIOCGUARANTEEDORDER (MTIOC|7) /* check for guaranteed order */
#define MTIOCRESERVE (MTIOC|8) /* preserve reserve */
#define MTIOCRELEASE (MTIOC|9) /* turnoff preserve reserve */
#define MTIOCFORCERESERVE (MTIOC|10) /* break reservation drive */
#define MTIOCGETERROR (MTIOC|11) /* Get recently error record */
#define MTIOCSTATE (MTIOC|13) /* Inquire insert/eject state */
#define MTIOCREADIGNOREILI (MTIOC|14) /* Enable/Disable ILI */
#define MTIOCREADIGNOREEOFS (MTIOC|15) /* Enable/Disable Ignore EOF */
#define MTIOCSHORTFMK (MTIOC|16) /* Enable/Disable Short FMK */
#define MTIOCGETPOS (MTIOC|17) /* Get drive position */
#define MTIOCRESTPOS (MTIOC|18) /* Go back to position */
#define MTIOCLTOP (MTIOC|19) /* do a mag tape op */