FDOPT_NORETRY
if (fd->sc_opts & FDOPT_NORETRY)
fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT);
fd->sc_opts &= ~FDOPT_NORETRY;
if (fd->sc_opts & FDOPT_NORETRY)
fdopts |= FDOPT_NORETRY;