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102 lines
4.2 KiB
C
102 lines
4.2 KiB
C
/*
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* Copyright (C) 2018 John Forecast. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOHN FORECAST "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __DOSMT_H__
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#define __DOSMT_H__
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#include "tape.h"
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/*
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* DOS-11 magtapes contain data records of 512 bytes each.
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*/
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#define DOSMTRCLNT 512
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/*
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* DOS/BATCH-11 magtape file header.
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*/
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struct dosmthdr {
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uint16_t fname[2]; /* first 6 chars of filename (RAD50) */
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uint16_t ext; /* 3 char file extension (RAD50) */
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uint8_t prog; /* programmer # (octal) */
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uint8_t proj; /* project # (octal) */
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uint16_t prot; /* protection code (octal) */
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uint16_t date; /* (year-1970) * 1000 + day of year */
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uint16_t fname3; /* optional, char 7 - 9 of name */
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};
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/*
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* Structure to describe a filename and associated UIC. Asterisks may be used
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* as wild card characters for the 4 components of a filename; name, extension,
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* group number and user number.
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*/
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struct dosmtFileSpec {
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uint8_t flags; /* Wild card indicators */
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uint16_t name[3]; /* File name */
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uint16_t ext; /* Extension */
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unsigned char proj; /* Project number */
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unsigned char prog; /* Programmer number */
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};
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#define DOSMT_WC_NAME 0001 /* Wild card name */
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#define DOSMT_WC_EXT 0002 /* Wild card extension */
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#define DOSMT_WC_PROJ 0004 /* Wild card project number */
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#define DOSMT_WC_PROG 0010 /* Wild card programmer number */
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#define DOSMT_M_NONE 0000 /* Wild cards not allowed */
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#define DOSMT_M_ALLOW 0001 /* Wild cards allowed */
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#define DOSMT_M_NONAME 0002 /* Wild cards allowed */
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/* If no filename + extension */
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/* present, default to *.*[*,*] */
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/*
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* Structure to define an open file.
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*/
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struct dosmtOpenFile {
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enum openMode mode; /* Open mode (read/write) */
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struct mountedFS *mount; /* Mounted file system descriptor */
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char buf[DOSMTRCLNT];/* Private buffer for file I/O */
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uint16_t nextb; /* Next byte to use */
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uint8_t tm; /* Tape mark has been read */
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uint8_t error; /* Error has been detected */
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};
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/*
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* DOS-11 magtape specific data area.
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*/
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struct DOSMTdata {
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uint8_t buf[DOSMTRCLNT];
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off_t eot; /* Logical end-of-tape */
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/*
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* Settable parameters
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*/
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uint8_t proj; /* project # */
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uint8_t prog; /* programmer # */
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uint8_t prot; /* protection code */
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#define FS_DOSMTEXT 0x0100 /* Write extended file headers */
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};
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#endif
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