text: 
  #ifndef _SYS__DEFAULT_FCNTL_H_
  #ifdef __cplusplus
  extern "C" {
  #endif
  #define _SYS__DEFAULT_FCNTL_H_
  #include <_ansi.h>
  #define _FOPEN (-1)			/* from sys/file.h, kernel use only */
  #define _FREAD 0x0001		/* read enabled */
  #define _FWRITE 0x0002		/* write enabled */
  #define _FAPPEND 0x0008		/* append (writes guaranteed at the end) */
  #define _FMARK 0x0010		/* internal; mark during gc() */
  #define _FDEFER 0x0020		/* internal; defer for next gc pass */
  #define _FASYNC 0x0040		/* signal pgrp when data ready */
  #define _FSHLOCK 0x0080		/* BSD flock() shared lock present */
  #define _FEXLOCK 0x0100		/* BSD flock() exclusive lock present */
  #define _FCREAT 0x0200		/* open with file create */
  #define _FTRUNC 0x0400		/* open with truncation */
  #define _FEXCL 0x0800		/* error on open if file exists */
  #define _FNBIO 0x1000		/* non blocking I/O (sys5 style) */
  #define _FSYNC 0x2000		/* do all writes synchronously */
  #define _FNONBLOCK 0x4000   /* non blocking I/O (POSIX style) */
  #define _FNDELAY _FNONBLOCK /* non blocking I/O (4.2 style) */
  #define _FNOCTTY 0x8000		/* don't assign a ctty on this open */
  
  #define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
  
  /*
   * Flag values for open(2) and fcntl(2)
   * The kernel adds 1 to the open modes to turn it into some
   * combination of FREAD and FWRITE.
   */
  #define O_RDONLY 0 /* +1 == FREAD */
  #define O_WRONLY 1 /* +1 == FWRITE */
  #define O_RDWR 2   /* +1 == FREAD|FWRITE */
  #define O_APPEND _FAPPEND
  #define O_CREAT _FCREAT
  #define O_TRUNC _FTRUNC
  #define O_EXCL _FEXCL
  #define O_SYNC _FSYNC
  /*	O_NDELAY	_FNDELAY 	set in include/fcntl.h */
  /*	O_NDELAY	_FNBIO 		set in include/fcntl.h */
  #define O_NONBLOCK _FNONBLOCK
  #define O_NOCTTY _FNOCTTY
  /* For machines which care - */
  #if defined(_WIN32) || defined(__CYGWIN__)
  #define _FBINARY 0x10000
  #define _FTEXT 0x20000
  #define _FNOINHERIT 0x40000
  
  #define O_BINARY _FBINARY
  #define O_TEXT _FTEXT
  #define O_NOINHERIT _FNOINHERIT
  /* O_CLOEXEC is the Linux equivalent to O_NOINHERIT */
  #define O_CLOEXEC _FNOINHERIT
  
  /* The windows header files define versions with a leading underscore.  */
  #define _O_RDONLY O_RDONLY
  #define _O_WRONLY O_WRONLY
  #define _O_RDWR O_RDWR
  #define _O_APPEND O_APPEND
  #define _O_CREAT O_CREAT
  #define _O_TRUNC O_TRUNC
  #define _O_EXCL O_EXCL
  #define _O_TEXT O_TEXT
  #define _O_BINARY O_BINARY
  #define _O_RAW O_BINARY
  #define _O_NOINHERIT O_NOINHERIT
  #endif
  
  #ifndef _POSIX_SOURCE
  
  /*
   * Flags that work for fcntl(fd, F_SETFL, FXXXX)
   */
  #define FAPPEND _FAPPEND
  #define FSYNC _FSYNC
  #define FASYNC _FASYNC
  #define FNBIO _FNBIO
  #define FNONBIO _FNONBLOCK /* XXX fix to be NONBLOCK everywhere */
  #define FNDELAY _FNDELAY
  
  /*
   * Flags that are disallowed for fcntl's (FCNTLCANT);
   * used for opens, internal state, or locking.
   */
  #define FREAD _FREAD
  #define FWRITE _FWRITE
  #define FMARK _FMARK
  #define FDEFER _FDEFER
  #define FSHLOCK _FSHLOCK
  #define FEXLOCK _FEXLOCK
  
  /*
   * The rest of the flags, used only for opens
   */
  #define FOPEN _FOPEN
  #define FCREAT _FCREAT
  #define FTRUNC _FTRUNC
  #define FEXCL _FEXCL
  #define FNOCTTY _FNOCTTY
  
  #endif /* !_POSIX_SOURCE */
  
  /* XXX close on exec request; must match UF_EXCLOSE in user.h */
  #define FD_CLOEXEC 1 /* posix */
  
  /* fcntl(2) requests */
  #define F_DUPFD 0 /* Duplicate fildes */
  #define F_GETFD 1 /* Get fildes flags (close on exec) */
  #define F_SETFD 2 /* Set fildes flags (close on exec) */
  #define F_GETFL 3 /* Get file flags */
  #define F_SETFL 4 /* Set file flags */
  #ifndef _POSIX_SOURCE
  #define F_GETOWN 5 /* Get owner - for ASYNC */
  #define F_SETOWN 6 /* Set owner - for ASYNC */
  #endif			   /* !_POSIX_SOURCE */
  #define F_GETLK 7  /* Get record-locking information */
  #define F_SETLK 8  /* Set or Clear a record-lock (Non-Blocking) */
  #define F_SETLKW 9 /* Set or Clear a record-lock (Blocking) */
  #ifndef _POSIX_SOURCE
  #define F_RGETLK 10  /* Test a remote lock to see if it is blocked */
  #define F_RSETLK 11  /* Set or unlock a remote lock */
  #define F_CNVT 12	/* Convert a fhandle to an open fd */
  #define F_RSETLKW 13 /* Set or Clear remote record-lock(Blocking) */
  #endif				 /* !_POSIX_SOURCE */
  #ifdef __CYGWIN__
  #define F_DUPFD_CLOEXEC 14 /* As F_DUPFD, but set close-on-exec flag */
  #endif
  
  /* fcntl(2) flags (l_type field of flock structure) */
  #define F_RDLCK 1 /* read lock */
  #define F_WRLCK 2 /* write lock */
  #define F_UNLCK 3 /* remove lock(s) */
  #ifndef _POSIX_SOURCE
  #define F_UNLKSYS 4 /* remove remote locks for a given system */
  #endif				/* !_POSIX_SOURCE */
  
  #ifdef __CYGWIN__
  /* Special descriptor value to denote the cwd in calls to openat(2) etc. */
  #define AT_FDCWD -2
  
  /* Flag values for faccessat2) et al. */
  #define AT_EACCESS 1
  #define AT_SYMLINK_NOFOLLOW 2
  #define AT_SYMLINK_FOLLOW 4
  #define AT_REMOVEDIR 8
  #endif
  
  /*#include <sys/stdtypes.h>*/
  
  #ifndef __CYGWIN__
  /* file segment locking set data type - information passed to system by user */
  struct flock {
      short l_type;   /* F_RDLCK, F_WRLCK, or F_UNLCK */
      short l_whence; /* flag to choose starting offset */
      long l_start;   /* relative offset, in bytes */
      long l_len;		/* length, in bytes; 0 means lock to EOF */
      short l_pid;	/* returned with F_GETLK */
      short l_xxx;	/* reserved for future use */
  };
  #endif /* __CYGWIN__ */
  
  #ifndef _POSIX_SOURCE
  /* extended file segment locking set data type */
  struct eflock {
      short l_type;   /* F_RDLCK, F_WRLCK, or F_UNLCK */
      short l_whence; /* flag to choose starting offset */
      long l_start;   /* relative offset, in bytes */
      long l_len;		/* length, in bytes; 0 means lock to EOF */
      short l_pid;	/* returned with F_GETLK */
      short l_xxx;	/* reserved for future use */
      long l_rpid;	/* Remote process id wanting this lock */
      long l_rsys;	/* Remote system id wanting this lock */
  };
  #endif /* !_POSIX_SOURCE */
  
  #include <sys/types.h>
  #include <sys/stat.h> /* sigh. for the mode bits for open/creat */
  
  extern int open _PARAMS((const char *, int, ...));
  extern int creat _PARAMS((const char *, mode_t));
  extern int fcntl _PARAMS((int, int, ...));
  #ifdef __CYGWIN__
  #include <sys/time.h>
  extern int futimesat _PARAMS((int, const char *, const struct timeval *));
  extern int openat _PARAMS((int, const char *, int, ...));
  #endif
  
  /* Provide _<systemcall> prototypes for functions provided by some versions
     of newlib.  */
  #ifdef _COMPILING_NEWLIB
  extern int _open _PARAMS((const char *, int, ...));
  extern int _fcntl _PARAMS((int, int, ...));
  #ifdef __LARGE64_FILES
  extern int _open64 _PARAMS((const char *, int, ...));
  #endif
  #endif
  
  #ifdef __cplusplus
  }
  #endif
  #endif /* !_SYS__DEFAULT_FCNTL_H_ */
  