BIOCBLINK
rv = ioctl(devh, BIOCBLINK, &bb);
if (ioctl(bioh, BIOCBLINK, &blink) == -1)
case BIOCBLINK:
case BIOCBLINK:
case BIOCBLINK:
case BIOCBLINK:
case BIOCBLINK:
case BIOCBLINK:
case BIOCBLINK:
case BIOCBLINK:
case BIOCBLINK: