nativelibc/include/unistd.h

#ifndef _UNISTD_H
#define _UNISTD_H

#define _IO_H_		// Not a nativelibc header file

#include <sys/types.h>

/*
 * Attributes of files as returned by _findfirst et al.
 */
#define	_A_NORMAL	0x00000000
#define	_A_RDONLY	0x00000001
#define	_A_HIDDEN	0x00000002
#define	_A_SYSTEM	0x00000004
#define	_A_VOLID	0x00000008
#define	_A_SUBDIR	0x00000010
#define	_A_ARCH		0x00000020

/* Standard file descriptors.  */
#define STDIN_FILENO 0		/* Standard input.  */
#define STDOUT_FILENO 1		/* Standard output.  */
#define STDERR_FILENO 2		/* Standard error output.  */

#ifndef _INTPTR_T_DEFINED
#define _INTPTR_T_DEFINED
#ifdef _WIN64
  typedef __int64 intptr_t;
#else
  typedef int intptr_t;
#endif
#endif

#ifndef _FSIZE_T_DEFINED
typedef unsigned long _fsize_t;
#define _FSIZE_T_DEFINED
#endif

#ifdef	__cplusplus
extern "C" {
#endif

int __cdecl __MINGW_NOTHROW chdir(const char *);
char *__cdecl __MINGW_NOTHROW getcwd(char *, int);
char *__cdecl __MINGW_NOTHROW mktemp(char *);
//int __cdecl __MINGW_NOTHROW chmod(const char *, mode_t);

#ifdef	__cplusplus
}
#endif

#define	F_OK	0	/* Check for file existence */
#define	X_OK	1	/* Execute permission, Always OK */
#define	W_OK	2	/* Check for write permission */
#define	R_OK	4	/* Check for read permission */

#ifdef	__cplusplus
extern "C" {
#endif

int __cdecl __MINGW_NOTHROW access(const char *, int);
int __cdecl __MINGW_NOTHROW close(int);
int __cdecl __MINGW_NOTHROW commit(int);

/* NOTE: The only significant bit in unPermissions appears to be bit 7 (0x80),
 *       the "owner write permission" bit (on FAT). */
int __cdecl __MINGW_NOTHROW creat(const char *, mode_t);

int __cdecl __MINGW_NOTHROW dup(int);
int __cdecl __MINGW_NOTHROW dup2(int, int);
int __cdecl __MINGW_NOTHROW isatty(int);

/* LK_... locking commands defined in sys/locking.h. */
int __cdecl __MINGW_NOTHROW _locking(int, int, long);

#ifndef _STDIO_H
/* These are also defined in stdio.h. */
#ifndef SEEK_SET
#define SEEK_SET 0
#endif

#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif

#ifndef SEEK_END
#define SEEK_END 2
#endif
#endif

long __cdecl __MINGW_NOTHROW lseek(int, off_t, int);

/* Optional third argument is unsigned unPermissions. */
int __cdecl __MINGW_NOTHROW open(const char *, int, ...);

int __cdecl __MINGW_NOTHROW pipe(int *);
int __cdecl __MINGW_NOTHROW read(int, void *, size_t);
int __cdecl __MINGW_NOTHROW _setmode(int, int);
long __cdecl __MINGW_NOTHROW _tell(int);
int __cdecl __MINGW_NOTHROW link(const char *, const char *);
int __cdecl __MINGW_NOTHROW symlink(const char *, const char *);
int __cdecl __MINGW_NOTHROW fsync(int);
int __cdecl __MINGW_NOTHROW unlink(const char *);
int __cdecl __MINGW_NOTHROW write(int, const void *, size_t);
int __cdecl __MINGW_NOTHROW readlink(const char *, char *, size_t);
int __cdecl __MINGW_NOTHROW rmdir(const char *);

int __cdecl __MINGW_NOTHROW truncate(const char *, off_t);
int __cdecl __MINGW_NOTHROW ftruncate(int, off_t);


#define TTY_FD_INVALID (-1)
#define TTY_FD_DEFAULT (-2)

int _get_stdout_fd(void);
int _get_stderr_fd(void);
int _set_stdout_fd(int);
int _set_stderr_fd(int);

#ifdef __cplusplus
}
#endif

//#include <process.h>
#define _PROCESS_H_		// Not a nativelibc header file

#ifdef __cplusplus
extern "C" {
#endif

void __cdecl __MINGW_NOTHROW _exit(int) __MINGW_ATTRIB_NORETURN;

pid_t __cdecl __MINGW_NOTHROW getpid(void);
pid_t __cdecl __MINGW_NOTHROW getppid(void);

unsigned int __cdecl __MINGW_NOTHROW sleep(unsigned int);
int __cdecl __MINGW_NOTHROW usleep(unsigned long int);

#ifdef __cplusplus
}
#endif

#define __UNISTD_GETOPT__
#include <getopt.h>
#undef __UNISTD_GETOPT__

#endif