unistd.h

#ifndef _UNISTD_H
#define _UNISTD_H    1

/* This file intended to serve as a drop-in replacement for 
 *  unistd.h on Windows
 *  Please add functionality as neeeded 
 */

#include <stdlib.h>
#include <io.h>
//#include <getopt.h> /* getopt from: http://www.pwilson.net/sample.html. */

#define srandom srand
#define random rand

const W_OK = 2;
const R_OK = 4;

#define access _access
#define ftruncate _chsize

#define ssize_t int

#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
/* should be in some equivalent to <sys/types.h> */
typedef __int8            int8_t;
typedef __int16           int16_t; 
typedef __int32           int32_t;
typedef __int64           int64_t;
typedef unsigned __int8   uint8_t;
typedef unsigned __int16  uint16_t;
typedef unsigned __int32  uint32_t;
typedef unsigned __int64  uint64_t;

#endif /* unistd.h  */