1#ifndef _SYS_IO_H 2#define _SYS_IO_H 3#ifdef __cplusplus 4extern "C" { 5#endif 6 7#include <features.h> 8 9#include <bits/io.h> 10 11int iopl(int); 12int ioperm(unsigned long, unsigned long, int); 13 14#ifdef __cplusplus 15} 16#endif 17#endif 18