OPENDEV_BLCK
if (dflags & OPENDEV_BLCK)
if (dflags & OPENDEV_BLCK)
fd = opendev(dev, O_RDONLY, OPENDEV_BLCK, NULL);
fd = opendev(key_disk, O_RDONLY, OPENDEV_BLCK, NULL);
fd = opendev(devname, O_RDONLY, OPENDEV_BLCK, &devpath);
fd = opendev(devname, O_RDONLY, OPENDEV_BLCK, &devpath);
fd = opendev(devname, O_RDONLY, OPENDEV_BLCK, &devpath);