1: /*
   2:  * Copyright (c) 1982, 1986 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)mtio.h	7.1 (Berkeley) 6/4/86
   7:  */
   8: 
   9: /*
  10:  * Structures and definitions for mag tape io control commands
  11:  */
  12: 
  13: /* structure for MTIOCTOP - mag tape op command */
  14: struct  mtop    {
  15:     short   mt_op;      /* operations defined below */
  16:     daddr_t mt_count;   /* how many of them */
  17: };
  18: 
  19: /* operations */
  20: #define MTWEOF  0   /* write an end-of-file record */
  21: #define MTFSF   1   /* forward space file */
  22: #define MTBSF   2   /* backward space file */
  23: #define MTFSR   3   /* forward space record */
  24: #define MTBSR   4   /* backward space record */
  25: #define MTREW   5   /* rewind */
  26: #define MTOFFL  6   /* rewind and put the drive offline */
  27: #define MTNOP   7   /* no operation, sets status only */
  28: #define MTCACHE 8   /* enable controller cache */
  29: #define MTNOCACHE 9 /* disable controller cache */
  30: 
  31: /* structure for MTIOCGET - mag tape get status command */
  32: 
  33: struct  mtget   {
  34:     short   mt_type;    /* type of magtape device */
  35: /* the following two registers are grossly device dependent */
  36:     short   mt_dsreg;   /* ``drive status'' register */
  37:     short   mt_erreg;   /* ``error'' register */
  38: /* end device-dependent registers */
  39:     short   mt_resid;   /* residual count */
  40: /* the following two are not yet implemented */
  41:     daddr_t mt_fileno;  /* file number of current position */
  42:     daddr_t mt_blkno;   /* block number of current position */
  43: /* end not yet implemented */
  44: };
  45: 
  46: /*
  47:  * Constants for mt_type byte.  These are the same
  48:  * for controllers compatible with the types listed.
  49:  */
  50: #define MT_ISTS     0x01        /* TS-11 */
  51: #define MT_ISHT     0x02        /* TM03 Massbus: TE16, TU45, TU77 */
  52: #define MT_ISTM     0x03        /* TM11/TE10 Unibus */
  53: #define MT_ISMT     0x04        /* TM78/TU78 Massbus */
  54: #define MT_ISUT     0x05        /* SI TU-45 emulation on Unibus */
  55: #define MT_ISCPC    0x06        /* SUN */
  56: #define MT_ISAR     0x07        /* SUN */
  57: #define MT_ISTMSCP  0x08        /* DEC TMSCP protocol (TU81, TK50) */
  58: 
  59: /* mag tape io control commands */
  60: #define MTIOCTOP    _IOW(m, 1, struct mtop)     /* do a mag tape op */
  61: #define MTIOCGET    _IOR(m, 2, struct mtget)    /* get tape status */
  62: #define MTIOCIEOT   _IO(m, 3)           /* ignore EOT error */
  63: #define MTIOCEEOT   _IO(m, 4)           /* enable EOT error */
  64: 
  65: #ifndef KERNEL
  66: #define DEFTAPE "/dev/rmt12"
  67: #endif

Defined struct's

mtget defined in line 33; used 24 times
mtop defined in line 14; used 24 times

Defined macros

DEFTAPE defined in line 66; never used
MTBSF defined in line 22; never used
MTCACHE defined in line 28; never used
MTFSF defined in line 21; never used
MTIOCEEOT defined in line 63; never used
MTIOCGET defined in line 61; used 1 times
MTIOCIEOT defined in line 62; never used
MTIOCTOP defined in line 60; used 1 times
MTNOCACHE defined in line 29; never used
MTNOP defined in line 27; never used
MTOFFL defined in line 26; never used
MTREW defined in line 25; never used
MTWEOF defined in line 20; never used
MT_ISAR defined in line 56; never used
MT_ISCPC defined in line 55; never used
MT_ISHT defined in line 51; used 1 times
MT_ISMT defined in line 53; used 1 times
MT_ISTM defined in line 52; used 1 times
MT_ISTMSCP defined in line 57; used 1 times
MT_ISTS defined in line 50; used 1 times
MT_ISUT defined in line 54; used 1 times

Usage of this include

Last modified: 1986-06-05
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