/*** *dos.h - definitions for MS-DOS interface routines * * Copyright (c) 1985-1993, 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. * *Revision History: * 06-11-87 JCR Added find_t * 06-15-87 JCR Added O_NOINHERIT * 06-18-87 JCR Added some DOS function prototypes * 06-19-87 JCR Moved O_NOINHERIT to fcntl.h * 06-25-87 JMB Added _HARDERR_* constants * 06-25-87 SKS Added diskfree_t, dosdate_t, dostime_t structures * 06-25-87 JCR Added _A_NORMAL, etc. constants * 07-17-87 JCR Added _chain_intr, also the "interrupt" type to * _dos_setvec and _dos_getvec. * 07-27-87 SKS Added several _dos_*() functions, _disable()/_enable() * 08-17-87 PHG Fixed bad prototype for _dos_getdiskfree() * 10-08-87 JCR Added _CDECL to prototypes with "interrupt" declaration * (needed for compiling with -Gc switch). * 09-27-88 JCR 386 version * 10-03-88 GJF Use M_I386, not I386 * 05-03-89 JCR Added _INTERNAL_IFSTRIP for relinc usage * 07-25-89 GJF Major cleanup. Alignment of struct fields is now * protected by pack pragmas. Now specific to 386. * 10-30-89 GJF Fixed copyright * 11-02-89 JCR Changed "DLL" to "_DLL" * 02-28-90 GJF Added #ifndef _INC_DOS and #include * stuff. Also, removed some (now) useless preprocessor * directives. * 03-22-90 GJF Replaced _cdecl with _CALLTYPE1 in prototype and with * _VARTYPE1 in variable declaration. * 12-28-90 SRW Added _CRUISER_ conditional around pack pragmas * 01-23-91 GJF Removed segread() prototype. * 04-04-91 GJF Added version info variables (_WIN32_). * 08-20-91 JCR C++ and ANSI naming * 08-26-91 BWM Added _peek, poke, and _getvideoaddr (_DOSX32_). * 08-26-91 BWM Removed _harderr constants, replaced by _seterrormode. * 08-26-91 BWM Removed datetime prototypes, replaced by systime functions. * 09-05-91 JCR Added missing #endif (bug fix), removed obsolete stuff * 09-16-91 BWM Fixed reversed #ifdef on screen address constants. * 01-22-92 GJF Fixed up definitions of global variables for build of, * and users of, crtdll.dll. * 03-30-92 DJM POSIX support. * 06-02-92 SKS Fix typo in DLL declaration of _osmajor * Add declartion of _pgmptr * 08-07-92 GJF Function calling type and variable type macros. * 01-21-93 GJF Removed support for C6-386's _cdecl. * ****/ #ifndef _INC_DOS #ifdef __cplusplus extern "C" { #endif #ifndef _INTERNAL_IFSTRIP_ #include #endif /* _INTERNAL_IFSTRIP_ */ /* * Conditional macro definition for function calling type and variable type * qualifiers. */ #if ( (_MSC_VER >= 800) && (_M_IX86 >= 300) ) /* * Definitions for MS C8-32 (386/486) compiler */ #define _CRTAPI1 __cdecl #define _CRTAPI2 __cdecl #else /* * Other compilers (e.g., MIPS) */ #define _CRTAPI1 #define _CRTAPI2 #endif #ifdef _CRUISER_ /* ensure proper alignment of struct fields */ #pragma pack(4) #endif /* ndef _CRUISER_ */ #ifdef _DOSX32_ /* Absolute address type for _peek and _poke */ #ifndef _ABSADDR_T_DEFINED typedef unsigned long _absaddr_t; #define _ABSADDR_T_DEFINED #endif #endif /* _getdiskfree structure (duplicated in DIRECT.H) */ #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 #ifdef _DOSX32_ /* Region constants for _getvideoaddress() */ #define _ADDR_NO_PALETTE_GRAPHICS 0x18000 /* For modes 4-6 */ #define _ADDR_PALETTE_GRAPHICS 0x00000 /* For modes 9+ */ #define _ADDR_COLOR_TEXT 0x18000 /* For modes 0-3 */ #define _ADDR_MONO_TEXT 0x10000 /* For mode 7 */ #endif #ifdef _DOSX32_ /* Macro to convert segmented address to _absaddr_t */ #define _MAKE_ABS(seg,off) ((seg << 16) | (off & 0xffff)) #endif /* 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_SUBDIR 0x10 /* Subdirectory */ #define _A_ARCH 0x20 /* Archive file */ /* external variable declarations */ #if defined(_WIN32_) || defined(_POSIX_) #ifdef _DLL #define _osversion (*_osversion_dll) #define _osmajor (*_osmajor_dll) #define _osminor (*_osminor_dll) #define _baseversion (*_baseversion_dll) #define _basemajor (*_basemajor_dll) #define _baseminor (*_baseminor_dll) #define _pgmptr (*_pgmptr_dll) extern unsigned int * _CRTVAR1 _osversion_dll; extern unsigned int * _CRTVAR1 _osmajor_dll; extern unsigned int * _CRTVAR1 _osminor_dll; extern unsigned int * _CRTVAR1 _baseversion_dll; extern unsigned int * _CRTVAR1 _basemajor_dll; extern unsigned int * _CRTVAR1 _baseminor_dll; extern char ** _CRTVAR1 _pgmptr_dll; #else #ifdef CRTDLL #define _osversion _osversion_dll #define _osmajor _osmajor_dll #define _osminor _osminor_dll #define _baseversion _baseversion_dll #define _basemajor _basemajor_dll #define _baseminor _baseminor_dll #define _pgmptr _pgmptr_dll #endif extern unsigned int _CRTVAR1 _osversion; extern unsigned int _CRTVAR1 _osmajor; extern unsigned int _CRTVAR1 _osminor; extern unsigned int _CRTVAR1 _baseversion; extern unsigned int _CRTVAR1 _basemajor; extern unsigned int _CRTVAR1 _baseminor; extern char * _CRTVAR1 _pgmptr; #endif #else /* ndef (_WIN32_ || _POSIX_) */ extern unsigned int _CRTVAR1 _osversion; #endif /* _WIN32_ */ /* function prototypes */ unsigned _CRTAPI1 _getdiskfree(unsigned, struct _diskfree_t *); #ifdef _DOSX32_ void * _CRTAPI1 _getvideoaddr(unsigned); #endif #ifdef _DOSX32_ void _CRTAPI1 _peek(_absaddr_t, void *, unsigned short); void _CRTAPI1 _poke(void *, _absaddr_t, unsigned short); #endif #if !__STDC__ /* Non-ANSI name for compatibility */ #define diskfree_t _diskfree_t #endif /* __STDC__ */ /* restore default alignment */ #ifdef _CRUISER_ #pragma pack() #endif /* ndef _CRUISER_ */ #ifdef __cplusplus } #endif #define _INC_DOS #endif /* _INC_DOS */