나래머드 컴파일 에러 질문1 : ioctl()에서 TIOCGETA, TIOSETA

interpreter.c: In function ‘echo_local’:
interpreter.c:623: warning: implicit declaration of function ‘ioctl’
interpreter.c:623: error: ‘TIOCGETA’ undeclared (first use in this function)
interpreter.c:623: error: (Each undeclared identifier is reported only once
interpreter.c:623: error: for each function it appears in.)
interpreter.c:625: error: ‘TIOCSETA’ undeclared (first use in this function)

void echo_local(int fd)
{
   struct termios io;
 
   ioctl(fd, TIOCGETA, &io);
   io.c_lflag |= ECHO;
   ioctl(fd, TIOCSETA, &io);
}