TTYIN
#define RIOFD(fd) (fd == TTYIN ? 0 : 1)
(void)ioctl(TTYIN, TCSETSW, &_Tv0s);
(void)ioctl(TTYIN, TCSETAW, &_Tv0);
(void)ioctl(TTYIN, TCGETA, &_Tv);
(void)ioctl(TTYIN, TCSETAW, &_Tv);
if(fstat(TTYIN, &buff) < 0) {
if (!(Saved_termios = ( ioctl(TTYIN, TCGETS, &_Tv0s) >= 0 ))) {
Saved_tty = ( ioctl(TTYIN, TCGETA, &_Tv0) == 0 );
vdisable = fpathconf(TTYIN, _PC_VDISABLE);
while(r_char(TTYIN) == YES) {
tdmp(TTYIN);
(void)close(TTYIN);
(void)fcntl(Cn,F_DUPFD,TTYIN);