-#define FD_CLOEXEC 1
-
-#define F_RDLCK 0
-#define F_WRLCK 1
-#define F_UNLCK 2
-
-#define AT_FDCWD (-100)
-#define AT_SYMLINK_NOFOLLOW 0x100
-#define AT_REMOVEDIR 0x200
-#define AT_SYMLINK_FOLLOW 0x400
-#define AT_EACCESS 0x200
-
-#define POSIX_FADV_NORMAL 0
-#define POSIX_FADV_RANDOM 1
-#define POSIX_FADV_SEQUENTIAL 2
-#define POSIX_FADV_WILLNEED 3
-#define POSIX_FADV_DONTNEED 4
-#define POSIX_FADV_NOREUSE 5