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_SETUP.4
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io.h
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1998-12-24
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/*
* io.h
*
* System level I/O functions and types.
*
* This file is part of the Mingw32 package.
*
* Contributors:
* Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
*
* THIS SOFTWARE IS NOT COPYRIGHTED
*
* This source code is offered for use in the public domain. You may
* use, modify or distribute it freely.
*
* This code is distributed in the hope that it will be useful but
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
* DISCLAMED. This includes but is not limited to warranties of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* $Revision: 2.5 $
* $Author: colin $
* $Date: 1998/05/12 22:24:04 $
*
*/
#ifndef __STRICT_ANSI__
#ifndef _IO_H_
#define _IO_H_
/* We need the definition of FILE anyway... */
#include <stdio.h>
/* MSVC's io.h contains the stuff from dir.h, so I will too.
* NOTE: This also defines off_t, the file offset type, through
* an inclusion of sys/types.h */
#include <dir.h>
/* TODO: Maximum number of open handles has not been tested, I just set
* it the same as FOPEN_MAX. */
#define HANDLE_MAX FOPEN_MAX
/* Some defines for _access nAccessMode (MS doesn't define them, but
* it doesn't seem to hurt to add them). */
#define F_OK 0 /* Check for file existence */
#define W_OK 2 /* Check for write permission */
#define R_OK 4 /* Check for read permission */
/* TODO: Is this safe? X_OK not supported directly... */
#define X_OK R_OK /* Check for execute permission */
#ifndef RC_INVOKED
#ifdef __cplusplus
extern "C" {
#endif
int _access (const char* szFileName, int nAccessMode);
int _chsize (int nHandle, long lnNewSize);
int _close (int nHandle);
/* NOTE: The only significant bit in unPermissions appears to be bit 7 (0x80),
* the "owner write permission" bit (on FAT). */
int _creat (const char* szFileName, unsigned unPermissions);
int _dup (int nHandle);
int _dup2 (int nOldHandle, int nNewHandle);
long _filelength (int nHandle);
int _fileno (FILE* fileGetHandle);
long _get_osfhandle (int nHandle);
int _isatty (int nHandle);
/* In a very odd turn of events this function is excluded from those
* files which define _STREAM_COMPAT. This is required in order to
* build GNU libio because of a conflict with _eof in streambuf.h
* line 107. Actually I might just be able to change the name of
* the enum member in streambuf.h... we'll see. TODO */
#ifndef _STREAM_COMPAT
int _eof (int nHandle);
#endif
/* LK_... locking commands defined in sys/locking.h. */
int _locking (int nHandle, int nCmd, long lnLockRegionLength);
long _lseek (int nHandle, long lnOffset, int nOrigin);
/* Optional third argument is unsigned unPermissions. */
int _open (const char* szFileName, int nFlags, ...);
int _open_osfhandle (long lnOSHandle, int nFlags);
int _pipe (int *naHandles, unsigned int unSize, int nMode);
int _read (int nHandle, void* caBuffer, unsigned int nToRead);
/* SH_... flags for nShFlags defined in share.h
* Optional fourth argument is unsigned unPermissions */
int _sopen (char* szFileName, int nFlags, int nShFlags, ...);
long _tell (int nHandle);
/* Should umask be in sys/stat.h and/or sys/types.h instead? */
int _umask (int nMode);
int _unlink (const char* szFileName);
int _write (int nHandle, const void* caBuffer,
unsigned int unToWrite);
#ifndef _NO_OLDNAMES
/*
* Non-underscored versions of non-ANSI functions to improve portability.
* These functions live in libmoldname.a.
*/
int access (const char* szFileName, int nAccessMode);
int chsize (int nHandle, long lnNewSize);
int close (int nHandle);
int creat (const char* szFileName, int nAccessMode);
int dup (int nHandle);
int dup2 (int nOldHandle, int nNewHandle);
int eof (int nHandle);
long filelength (int nHandle);
int fileno (FILE* fileGetHandle);
int isatty (int nHandle);
long lseek (int nHandle, long lnOffset, int nOrigin);
int open (const char* szFileName, int nFlags, ...);
int read (int nHandle, void* caBuffer, unsigned int nToRead);
int sopen (char* szFileName, int nAccess, int nFlag, ...);
long tell (int nHandle);
int umask (int nMode);
int unlink (const char* szFileName);
int write (int nHandle, const void* caBuffer,
unsigned int nToWrite);
#endif /* Not _NO_OLDNAMES */
#ifdef __cplusplus
}
#endif
#endif /* Not RC_INVOKED */
#endif /* _IO_H_ not defined */
#endif /* Not strict ANSI */