/****************************************************************/
/*                                                              */
/*                            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.                                    */
/****************************************************************/


/* $Logfile:   C:/dos-c/hdr/sft.h_v  $ */
#ifdef MAIN
# ifdef VERSION_STRINGS
static BYTE *sft_hRcsId = "$Header:   C:/dos-c/hdr/sft.h_v   1.6   04 Jan 1998 23:14:18   patv  $";
# endif
#endif

/* $Log:   C:/dos-c/hdr/sft.h_v  $
 *	
 *	   Rev 1.6   04 Jan 1998 23:14:18   patv
 *	Changed Log for strip utility
 *	
 *	   Rev 1.5   16 Jan 1997 12:46:04   patv
 *	pre-Release 0.92 feature additions
 *      
 *         Rev 1.4   29 May 1996 21:25:18   patv
 *      bug fixes for v0.91a
 *      
 *         Rev 1.3   19 Feb 1996  3:15:34   patv
 *      Added NLS, int2f and config.sys processing
 *      
 *         Rev 1.2   01 Sep 1995 17:35:44   patv
 *      First GPL release.
 *      
 *         Rev 1.1   30 Jul 1995 20:43:50   patv
 *      Eliminated version strings in ipl
 *      
 *         Rev 1.0   02 Jul 1995 10:39:52   patv
 *      Initial revision.
 */
/* $EndLog$ */

#define SFTMAX  128

/* Handle Definition entry                                              */
typedef struct
{
	WORD    sft_count;      /* reference count                      */
	WORD    sft_mode;       /* open mode - see below                */
	BYTE    sft_attrib;     /* file attribute - dir style           */
	WORD    sft_flags;      /* flags - see below                    */
	union
	{
		struct  dpb FAR *
			_sft_dcb;       /* The device control block     */
		struct dhdr FAR *
			_sft_dev;       /* device driver for char dev   */
	} sft_dcb_or_dev;
	WORD    sft_stclust;    /* Starting cluster                     */
	time    sft_time;       /* File time                            */
	date    sft_date;       /* File date                            */
	LONG    sft_size;       /* File size                            */
	LONG    sft_posit;      /* Current file position                */
	WORD    sft_relclust;   /* File relative cluster                */
	WORD    sft_cuclust;    /* File current cluster                 */
	WORD    sft_dirdlust;   /* Sector containing cluster            */
	BYTE    sft_diridx;     /* directory index                      */
	BYTE    sft_name[11];   /* dir style file name                  */
	BYTE    FAR *
		sft_bshare;     /* backward link of file sharing sft    */
	WORD    sft_mach;       /* machine number - network apps        */
	WORD    sft_psp;        /* owner psp                            */
	WORD    sft_shroff;     /* Sharing offset                       */
	WORD    sft_status;     /* this sft status                      */
} 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           */

/* mode bits                                                            */
#define SFT_MFCB        0x8000          /* entry is for fcb             */
#define SFT_MDENYNONE   0x0040          /* sharing bits                 */
#define SFT_MDENYREAD   0x0030          /*     "      "                 */
#define SFT_MDENYWRITE  0x0020          /*     "      "                 */
#define SFT_MEXCLUSIVE  0x0010          /*     "      "                 */
#define SFT_NOINHERIT   0x0080          /* inhibit inherting of file    */
#define SFT_NETFCB      0x0070          /* networked fcb                */
#define SFT_MSHAREMASK  0x0070          /* mask to isolate shared bits  */
#define SFT_MRDWR       0x0002          /* read/write bit               */
#define SFT_MWRITE      0x0001          /* write bit                    */
#define SFT_MREAD       0x0000          /* ~ write bit                  */
#define SFT_OMASK       0x00f3          /* valid open mask              */

/* 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_FDIRTY      0x0040          /* File has 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_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_FSTDOUT     0x0002          /* device is stdout             */
#define SFT_FSTDIN      0x0001          /* device is stdin              */

/* Covienence defines                                                   */
#define sft_dcb         sft_dcb_or_dev._sft_dcb
#define sft_dev         sft_dcb_or_dev._sft_dev