574 xclose(int fildes)  in xclose()  argument
576     if (fildes < 0)  in xclose()
578     while (close(fildes) == -1 && errno == EINTR)  in xclose()
604 xdup2(int fildes, int fildes2)  in xdup2()  argument
608     while ((res = dup2(fildes, fildes2)) == -1 && errno == EINTR)  in xdup2()
684 xread(int fildes, void *buf, size_t nbyte)  in xread()  argument
693     while ((res = read(fildes, buf, nbyte)) == -1 && errno == EINTR);  in xread()
699 xtcsetattr(int fildes, int optional_actions, const struct termios *termios_p)  in xtcsetattr()  argument
703     while ((res = tcsetattr(fildes, optional_actions, termios_p)) == -1 &&  in xtcsetattr()
712 xwrite(int fildes, const void *buf, size_t nbyte)  in xwrite()  argument
721     while ((res = write(fildes, buf, nbyte)) == -1 && errno == EINTR);  in xwrite()