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144 lines (128 loc) · 6.73 KB
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/****************************************************************/
/* */
/* sft.h */
/* DOS-C */
/* */
/* DOS System File Table Structure */
/* */
/* Copyright (c) 1995, 1996 */
/* Pasquale J. Villani */
/* All Rights Reserved */
/* */
/* This file is part of DOS-C. */
/* */
/* DOS-C is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version */
/* 2, or (at your option) any later version. */
/* */
/* DOS-C is distributed in the hope that it will be useful, but */
/* WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
/* the GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public */
/* License along with DOS-C; see the file COPYING. If not, */
/* write to the Free Software Foundation, 675 Mass Ave, */
/* Cambridge, MA 02139, USA. */
/****************************************************************/
#ifdef MAIN
#ifdef VERSION_STRINGS
static BYTE *sft_hRcsId =
"$Id: sft.h 1429 2009-06-09 18:50:03Z bartoldeman $";
#endif
#endif
#define SFTMAX 128
/* Handle Definition entry */
typedef struct {
WORD sft_count; /* 00 - reference count */
WORD sft_mode; /* 02 - open mode - see below */
BYTE sft_attrib; /* 04 - file attribute - dir style */
union /* 05 */
{
WORD _sft_flags;
struct {
BYTE _sft_flags_lo;
BYTE _sft_flags_hi;
} _split_sft_flags;
} sft_flags_union;
union /* 07 */
{
struct dpb FAR *_sft_dcb; /* The device control block */
struct dhdr FAR *_sft_dev; /* device driver for char dev */
} sft_dcb_or_dev;
#ifdef WITHFAT32
UWORD sft_relclust_high; /* 0b - High part of relative cluster */
#else
CLUSTER sft_stclust; /* 0b - Starting cluster */
#endif
dtime sft_time; /* 0d - File time */
ddate sft_date; /* 0f - File date */
ULONG sft_size; /* 11 - File size */
ULONG sft_posit; /* 15 - Current file position */
UWORD sft_relclust; /* 19 - File relative cluster (low part) */
ULONG sft_dirsector; /* 1b - Sector containing cluster */
UBYTE sft_diridx; /* 1f - directory index */
BYTE sft_name[11]; /* 20 - dir style file name */
#ifdef WITHFAT32
CLUSTER sft_stclust; /* 2b - Starting cluster */
#else
BYTE FAR *sft_bshare; /* 2b - backward link of file sharing sft */
#endif
WORD sft_mach; /* 2f - machine number - network apps */
WORD sft_psp; /* 31 - owner psp */
WORD sft_shroff; /* 33 - Sharing offset */
CLUSTER sft_cuclust; /* 35 - File current cluster */
#ifdef WITHFAT32
UWORD sft_pad;
#else
BYTE FAR *sft_ifsptr; /* 37 - pointer to IFS driver for file, 0000000h if native DOS */
#endif
} sft;
/* SFT Table header definition */
typedef struct _sftheader {
struct sfttbl FAR * /* link to next table in list */
sftt_next;
WORD sftt_count; /* # of handle definition */
/* entries, this table */
} sftheader;
/* System File Definition List */
typedef struct sfttbl {
struct sfttbl FAR * /* link to next table in list */
sftt_next;
WORD sftt_count; /* # of handle definition */
/* entries, this table */
sft sftt_table[SFTMAX]; /* The array of sft for block */
} sfttbl;
/* defines for sft use */
#define SFT_MASK 0x0060 /* splits device data */
/* flag bits */
/* the following bit is for redirection */
#define SFT_FSHARED 0x8000 /* Networked access */
/* the following entry differntiates char & block access */
#define SFT_FDEVICE 0x0080 /* device entry */
/* the following bits are file (block) unique */
#define SFT_FDATE 0x4000 /* File date set */
#define SFT_FFIXEDMEDIA 0x0800 /* File on non-removable media - unused */
#define SFT_FCLEAN 0x0040 /* File has not been written to */
#define SFT_FDMASK 0x003f /* File mask for drive no */
/* the following bits are device (char) unique */
#define SFT_FIOCTL 0x4000 /* IOCTL support - device */
#define SFT_FOCRM 0x0800 /* Open/Close/RM bit in device attribute*/
#define SFT_FEOF 0x0040 /* device eof */
#define SFT_FBINARY 0x0020 /* device binary mode */
#define SFT_FSPECIAL 0x0010 /* int 29 support */
#define SFT_FCLOCK 0x0008 /* device is clock */
#define SFT_FNUL 0x0004 /* device is nul */
#define SFT_FCONOUT 0x0002 /* device is console output */
#define SFT_FCONIN 0x0001 /* device is console input */
/* Convenience defines */
#define sft_dcb sft_dcb_or_dev._sft_dcb
#define sft_dev sft_dcb_or_dev._sft_dev
#define sft_flags sft_flags_union._sft_flags
#define sft_flags_hi sft_flags_union._split_sft_flags._sft_flags_hi
#define sft_flags_lo sft_flags_union._split_sft_flags._sft_flags_lo
/* defines for LSEEK */
#define SEEK_SET 0u
#define SEEK_CUR 1u
#define SEEK_END 2u
