45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* <sys/mtio.h> magnetic tape commands Author: Kees J. Bot
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*/
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#ifndef _SYS__MTIO_H
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#define _SYS__MTIO_H
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/* Tape operations: ioctl(fd, MTIOCTOP, &struct mtop) */
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struct mtop {
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short mt_op; /* Operation (MTWEOF, etc.) */
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int mt_count; /* Repeat count. */
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};
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#define MTWEOF 0 /* Write End-Of-File Marker */
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#define MTFSF 1 /* Forward Space File mark */
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#define MTBSF 2 /* Backward Space File mark */
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#define MTFSR 3 /* Forward Space Record */
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#define MTBSR 4 /* Backward Space Record */
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#define MTREW 5 /* Rewind tape */
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#define MTOFFL 6 /* Rewind and take Offline */
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#define MTNOP 7 /* No-Operation, set status only */
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#define MTRETEN 8 /* Retension (completely wind and rewind) */
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#define MTERASE 9 /* Erase the tape and rewind */
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#define MTEOM 10 /* Position at End-Of-Media */
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#define MTMODE 11 /* Select tape density */
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#define MTBLKZ 12 /* Select tape block size */
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/* Tape status: ioctl(fd, MTIOCGET, &struct mtget) */
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struct mtget {
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short mt_type; /* Type of tape device. */
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/* Device dependent "registers". */
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short mt_dsreg; /* Drive status register. */
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short mt_erreg; /* Error register. */
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short dummy; /* (alignment) */
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/* Misc info. */
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off_t mt_resid; /* Residual count. */
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off_t mt_fileno; /* Current File Number. */
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off_t mt_blkno; /* Current Block Number within file. */
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off_t mt_blksize; /* Current block size. */
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};
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#endif /* _SYS__MTIO_H */
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