This function will be removed once mmap is fully functional (e.g. MAP_ANONYMOUS is supported)
Member roanon_mmap (void *_, size_t len, int prot, int flags, const char *filename, int fd, off_t offset)
This function will be removed once mmap is fully functional (e.g. MAP_ANONYMOUS is supported), in which case mapped memory would need to be converted to ASCII if the file contains EBCDIC.