132 lines
2.6 KiB
C
132 lines
2.6 KiB
C
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/***
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*dos.h - definitions for MS-DOS interface routines
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*
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* Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Defines the structs and unions used for the direct DOS interface
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* routines; includes macros to access the segment and offset
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* values of far pointers, so that they may be used by the routines; and
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* provides function prototypes for direct DOS interface functions.
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*
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****/
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#ifndef _INC_DOS
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Conditional macro definition for function calling type and variable type
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* qualifiers.
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*/
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#if ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
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/*
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* Definitions for MS C8-32 (386/486) compiler
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*/
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#define _CRTAPI1 __cdecl
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#define _CRTAPI2 __cdecl
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#else
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/*
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* Other compilers (e.g., MIPS)
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*/
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#define _CRTAPI1
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#define _CRTAPI2
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#endif
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/* _getdiskfree structure (duplicated in DIRECT.H) */
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#ifndef _DISKFREE_T_DEFINED
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struct _diskfree_t {
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unsigned total_clusters;
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unsigned avail_clusters;
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unsigned sectors_per_cluster;
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unsigned bytes_per_sector;
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};
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#define _DISKFREE_T_DEFINED
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#endif
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/* File attribute constants */
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#define _A_NORMAL 0x00 /* Normal file - No read/write restrictions */
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#define _A_RDONLY 0x01 /* Read only file */
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#define _A_HIDDEN 0x02 /* Hidden file */
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#define _A_SYSTEM 0x04 /* System file */
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#define _A_SUBDIR 0x10 /* Subdirectory */
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#define _A_ARCH 0x20 /* Archive file */
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/* external variable declarations */
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#if defined(_WIN32_) || defined(_POSIX_)
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#ifdef _DLL
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#define _osversion (*_osversion_dll)
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#define _osmajor (*_osmajor_dll)
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#define _osminor (*_osminor_dll)
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#define _baseversion (*_baseversion_dll)
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#define _basemajor (*_basemajor_dll)
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#define _baseminor (*_baseminor_dll)
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#define _pgmptr (*_pgmptr_dll)
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extern unsigned int * _osversion_dll;
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extern unsigned int * _osmajor_dll;
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extern unsigned int * _osminor_dll;
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extern unsigned int * _baseversion_dll;
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extern unsigned int * _basemajor_dll;
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extern unsigned int * _baseminor_dll;
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extern char ** _pgmptr_dll;
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#else
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extern unsigned int _osversion;
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extern unsigned int _osmajor;
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extern unsigned int _osminor;
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extern unsigned int _baseversion;
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extern unsigned int _basemajor;
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extern unsigned int _baseminor;
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extern char * _pgmptr;
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#endif
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#else /* ndef (_WIN32_ || _POSIX_) */
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extern unsigned int _osversion;
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#endif /* _WIN32_ */
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/* function prototypes */
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unsigned _CRTAPI1 _getdiskfree(unsigned, struct _diskfree_t *);
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#if !__STDC__
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/* Non-ANSI name for compatibility */
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#define diskfree_t _diskfree_t
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#endif /* __STDC__ */
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/* restore default alignment */
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#ifdef __cplusplus
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}
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#endif
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#define _INC_DOS
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#endif /* _INC_DOS */
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