100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
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/* @(#)mtio.h 1.6 10/08/23 Copyright 1995,2000-2010 J. Schilling */
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/*
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* Generic header for users of magnetic tape ioctl interface.
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*
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* If there is no local mtio.h or equivalent, define
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* simplified mtio definitions here in order
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* to be able to do at least remote mtio on systems
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* that have no local mtio
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*
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* Copyright (c) 1995,2000-2010 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#ifndef _SCHILY_MTIO_H
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#define _SCHILY_MTIO_H
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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#ifdef HAVE_SYS_MTIO_H
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#include <sys/mtio.h>
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#else /* ! HAVE_SYS_MTIO_H */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Definitions for magnetic tape io control commands
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*/
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/*
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* structure for MTIOCTOP - magnetic tape operation command
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*/
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struct mtop {
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short mt_op; /* op code (see below) */
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daddr_t mt_count; /* repeat count or param */
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};
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/*
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* op code values for mt_op
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*/
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#define MTWEOF 0 /* write EOF record(s) */
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#define MTFSF 1 /* fwd space over file mark(s) */
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#define MTBSF 2 /* back space over file mark(s) (1/2" only ) */
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#define MTFSR 3 /* fwd space record(s) (to inter-record gap) */
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#define MTBSR 4 /* back space record(s) (to inter-record gap) */
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#define MTREW 5 /* rewind tape */
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#define MTOFFL 6 /* rewind and put the drive offline */
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#define MTNOP 7 /* no operation (sets status ?) */
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/*
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* structure for MTIOCGET - magnetic tape get status command
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*/
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struct mtget {
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short mt_type; /* type of magnetic tape device */
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/* the next two regs are device dependent */
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short mt_dsreg; /* drive status 'register' */
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short mt_erreg; /* error 'register' */
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daddr_t mt_resid; /* transfer residual count */
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daddr_t mt_fileno; /* file # for current position */
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daddr_t mt_blkno; /* block # for current position */
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};
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#define HAVE_MTGET_TYPE
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#define HAVE_MTGET_DSREG
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#define HAVE_MTGET_ERREG
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#define HAVE_MTGET_RESID
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#define HAVE_MTGET_FILENO
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#define HAVE_MTGET_BLKNO
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/*
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* Define some junk here as software may assume that these two definitions
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* are always present.
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*/
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#define MTIOCGET 0x12340001
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#define MTIOCTOP 0x12340002
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAVE_SYS_MTIO_H */
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#endif /* _SCHILY_MTIO_H */
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