_haiku_build_openat
int _haiku_build_openat(int fd, const char* path, int openMode, ...);
_haiku_build_openat(fd, path, openMode)
return _haiku_build_openat(AT_FDCWD, path, openMode, permissions);
return _haiku_build_openat(fd, path, openMode, permissions);
int _haiku_build_openat(int fd, const char* path, int openMode, ...);