source: trunk/minix/include/sys/mtio.h@ 10

Last change on this file since 10 was 9, checked in by Mattia Monga, 13 years ago

Minix 3.1.2a

File size: 1.4 KB
Line 
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
9struct 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
30struct 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 */
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