common/include/sys/mtio.h

   1 /* <sys/mtio.h> magnetic tape commands                  Author: Kees J. Bot
   2  */
   3
   4 #ifndef _SYS__MTIO_H
   5 #define _SYS__MTIO_H
   6
   7 /* Tape operations: ioctl(fd, MTIOCTOP, &struct mtop) */
   8
   9 struct mtop {
  10         short   mt_op;          /* Operation (MTWEOF, etc.) */
  11         int     mt_count;       /* Repeat count. */
  12 };
  13
  14 #define MTWEOF   0      /* Write End-Of-File Marker */
  15 #define MTFSF    1      /* Forward Space File mark */
  16 #define MTBSF    2      /* Backward Space File mark */
  17 #define MTFSR    3      /* Forward Space Record */
  18 #define MTBSR    4      /* Backward Space Record */
  19 #define MTREW    5      /* Rewind tape */
  20 #define MTOFFL   6      /* Rewind and take Offline */
  21 #define MTNOP    7      /* No-Operation, set status only */
  22 #define MTRETEN  8      /* Retension (completely wind and rewind) */
  23 #define MTERASE  9      /* Erase the tape and rewind */
  24 #define MTEOM   10      /* Position at End-Of-Media */
  25 #define MTMODE  11      /* Select tape density */
  26 #define MTBLKZ  12      /* Select tape block size */
  27
  28 /* Tape status: ioctl(fd, MTIOCGET, &struct mtget) */
  29
  30 struct mtget {
  31         short   mt_type;        /* Type of tape device. */
  32
  33         /* Device dependent "registers". */
  34         short   mt_dsreg;       /* Drive status register. */
  35         short   mt_erreg;       /* Error register. */
  36         short   dummy;          /* (alignment) */
  37
  38         /* Misc info. */
  39         off_t   mt_resid;       /* Residual count. */
  40         off_t   mt_fileno;      /* Current File Number. */
  41         off_t   mt_blkno;       /* Current Block Number within file. */
  42         off_t   mt_blksize;     /* Current block size. */
  43 };
  44
  45 #endif /* _SYS__MTIO_H */