#include <termios.h>
#include <sys/ioctl.h>

void cfmakeraw(struct termios *t) {
     t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
     t->c_oflag &= ~OPOST;
     t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
     t->c_cflag &= ~(CSIZE|PARENB);
     t->c_cflag |= CS8;
     t->c_cc[VMIN] = 1;
     t->c_cc[VTIME] = 0;
}

