221 lines
5.6 KiB
C
221 lines
5.6 KiB
C
/***
|
|
*dos.h - definitions for MS-DOS interface routines
|
|
*
|
|
* Copyright (c) 1985-1988, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* Defines the structs and unions used for the direct DOS interface
|
|
* routines; includes macros to access the segment and offset
|
|
* values of far pointers, so that they may be used by the routines; and
|
|
* provides function prototypes for direct DOS interface functions.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
|
|
#ifndef NO_EXT_KEYS /* extensions enabled */
|
|
#define _CDECL cdecl
|
|
#define _NEAR near
|
|
#else /* extensions not enabled */
|
|
#define _CDECL
|
|
#define _NEAR
|
|
#endif /* NO_EXT_KEYS */
|
|
|
|
|
|
#ifndef _REGS_DEFINED
|
|
|
|
/* word registers */
|
|
|
|
struct WORDREGS {
|
|
unsigned int ax;
|
|
unsigned int bx;
|
|
unsigned int cx;
|
|
unsigned int dx;
|
|
unsigned int si;
|
|
unsigned int di;
|
|
unsigned int cflag;
|
|
};
|
|
|
|
|
|
/* byte registers */
|
|
|
|
struct BYTEREGS {
|
|
unsigned char al, ah;
|
|
unsigned char bl, bh;
|
|
unsigned char cl, ch;
|
|
unsigned char dl, dh;
|
|
};
|
|
|
|
|
|
/* general purpose registers union -
|
|
* overlays the corresponding word and byte registers.
|
|
*/
|
|
|
|
union REGS {
|
|
struct WORDREGS x;
|
|
struct BYTEREGS h;
|
|
};
|
|
|
|
|
|
/* segment registers */
|
|
|
|
struct SREGS {
|
|
unsigned int es;
|
|
unsigned int cs;
|
|
unsigned int ss;
|
|
unsigned int ds;
|
|
};
|
|
|
|
#define _REGS_DEFINED
|
|
|
|
#endif
|
|
|
|
|
|
/* dosexterror structure */
|
|
|
|
#ifndef _DOSERROR_DEFINED
|
|
|
|
struct DOSERROR {
|
|
int exterror;
|
|
char class;
|
|
char action;
|
|
char locus;
|
|
};
|
|
|
|
#define _DOSERROR_DEFINED
|
|
|
|
#endif
|
|
|
|
|
|
/* _dos_findfirst structure */
|
|
|
|
#ifndef _FIND_T_DEFINED
|
|
|
|
struct find_t {
|
|
char reserved[21];
|
|
char attrib;
|
|
unsigned wr_time;
|
|
unsigned wr_date;
|
|
long size;
|
|
char name[13];
|
|
};
|
|
|
|
#define _FIND_T_DEFINED
|
|
|
|
#endif
|
|
|
|
|
|
/* _dos_getdate/_dossetdate and _dos_gettime/_dos_settime structures */
|
|
|
|
#ifndef _DATETIME_T_DEFINED
|
|
|
|
struct dosdate_t {
|
|
unsigned char day; /* 1-31 */
|
|
unsigned char month; /* 1-12 */
|
|
unsigned int year; /* 1980-2099 */
|
|
unsigned char dayofweek; /* 0-6, 0=Sunday */
|
|
};
|
|
|
|
struct dostime_t {
|
|
unsigned char hour; /* 0-23 */
|
|
unsigned char minute; /* 0-59 */
|
|
unsigned char second; /* 0-59 */
|
|
unsigned char hsecond; /* 0-99 */
|
|
};
|
|
|
|
#define _DATETIME_T_DEFINED
|
|
|
|
#endif
|
|
|
|
|
|
/* _dos_getdiskfree structure */
|
|
|
|
#ifndef _DISKFREE_T_DEFINED
|
|
|
|
struct diskfree_t {
|
|
unsigned total_clusters;
|
|
unsigned avail_clusters;
|
|
unsigned sectors_per_cluster;
|
|
unsigned bytes_per_sector;
|
|
};
|
|
|
|
#define _DISKFREE_T_DEFINED
|
|
|
|
#endif
|
|
|
|
|
|
/* manifest constants for _hardresume result parameter */
|
|
|
|
#define _HARDERR_IGNORE 0 /* Ignore the error */
|
|
#define _HARDERR_RETRY 1 /* Retry the operation */
|
|
#define _HARDERR_ABORT 2 /* Abort program issuing Interrupt 23h */
|
|
#define _HARDERR_FAIL 3 /* Fail the system call in progress */
|
|
/* _HARDERR_FAIL is not supported on DOS 2.x */
|
|
|
|
/* File attribute constants */
|
|
|
|
#define _A_NORMAL 0x00 /* Normal file - No read/write restrictions */
|
|
#define _A_RDONLY 0x01 /* Read only file */
|
|
#define _A_HIDDEN 0x02 /* Hidden file */
|
|
#define _A_SYSTEM 0x04 /* System file */
|
|
#define _A_VOLID 0x08 /* Volume ID file */
|
|
#define _A_SUBDIR 0x10 /* Subdirectory */
|
|
#define _A_ARCH 0x20 /* Archive file */
|
|
|
|
/* macros to break MS C "far" pointers into their segment and offset
|
|
* components
|
|
*/
|
|
|
|
#define FP_SEG(fp) (*((unsigned *)&(fp) + 1))
|
|
#define FP_OFF(fp) (*((unsigned *)&(fp)))
|
|
|
|
|
|
/* external variable declarations */
|
|
|
|
extern unsigned int _NEAR _CDECL _osversion;
|
|
|
|
|
|
/* function prototypes */
|
|
|
|
int _CDECL bdos(int, unsigned int, unsigned int);
|
|
void _CDECL _disable(void);
|
|
unsigned _CDECL _dos_allocmem(unsigned, unsigned *);
|
|
unsigned _CDECL _dos_close(int);
|
|
unsigned _CDECL _dos_creat(char *, unsigned, int *);
|
|
unsigned _CDECL _dos_creatnew(char *, unsigned, int *);
|
|
unsigned _CDECL _dos_findfirst(char *, unsigned, struct find_t *);
|
|
unsigned _CDECL _dos_findnext(struct find_t *);
|
|
unsigned _CDECL _dos_freemem(unsigned);
|
|
void _CDECL _dos_getdate(struct dosdate_t *);
|
|
void _CDECL _dos_getdrive(unsigned *);
|
|
unsigned _CDECL _dos_getdiskfree(unsigned, struct diskfree_t *);
|
|
unsigned _CDECL _dos_getfileattr(char *, unsigned *);
|
|
unsigned _CDECL _dos_getftime(int, unsigned *, unsigned *);
|
|
void _CDECL _dos_gettime(struct dostime_t *);
|
|
void _CDECL _dos_keep(unsigned, unsigned);
|
|
unsigned _CDECL _dos_open(char *, unsigned, int *);
|
|
unsigned _CDECL _dos_setblock(unsigned, unsigned, unsigned *);
|
|
unsigned _CDECL _dos_setdate(struct dosdate_t *);
|
|
void _CDECL _dos_setdrive(unsigned, unsigned *);
|
|
unsigned _CDECL _dos_setfileattr(char *, unsigned);
|
|
unsigned _CDECL _dos_setftime(int, unsigned, unsigned);
|
|
unsigned _CDECL _dos_settime(struct dostime_t *);
|
|
int _CDECL dosexterr(struct DOSERROR *);
|
|
void _CDECL _enable(void);
|
|
void _CDECL _hardresume(int);
|
|
void _CDECL _hardretn(int);
|
|
int _CDECL intdos(union REGS *, union REGS *);
|
|
int _CDECL intdosx(union REGS *, union REGS *, struct SREGS *);
|
|
int _CDECL int86(int, union REGS *, union REGS *);
|
|
int _CDECL int86x(int, union REGS *, union REGS *, struct SREGS *);
|
|
void _CDECL segread(struct SREGS *);
|
|
|
|
|
|
#ifndef NO_EXT_KEYS /* extensions enabled */
|
|
void _CDECL _chain_intr(void (_CDECL interrupt far *)());
|
|
void (_CDECL interrupt far * _CDECL _dos_getvect(unsigned))();
|
|
unsigned _CDECL _dos_read(int, void far *, unsigned, unsigned *);
|
|
void _CDECL _dos_setvect(unsigned, void (_CDECL interrupt far *)());
|
|
unsigned _CDECL _dos_write(int, void far *, unsigned, unsigned *);
|
|
void _CDECL _harderr(void (far *)());
|
|
#endif /* NO_EXT_KEYS */
|