chrtoblk
devno = chrtoblk(dev);
dev = chrtoblk((dev_t)name[1]);
devno = chrtoblk(dev);
dev = chrtoblk((dev_t)name[1]);
if ((bdev = chrtoblk(dev)) != NODEV &&
blkname = findblkname(major(chrtoblk(bp->b_dev)));
dev_t chrtoblk(dev_t);