i = fcntl (amaster, F_SETFL, O_RDONLY /* !O_NONBLOCK */);
if (i != 0)
{
perror ("fcntl (amaster, F_SETFL, O_RDONLY /* !O_NONBLOCK */)");
exit (EXIT_FAILURE);
}
i = fcntl (amaster, F_SETFL, O_RDONLY /* !O_NONBLOCK */);
if (i != 0)
{
perror ("fcntl (amaster, F_SETFL, O_RDONLY /* !O_NONBLOCK */)");
exit (EXIT_FAILURE);
}