cv4
size = cv4(de->size);
size = cv4(f->de.size);
if (!(fs->spf = cv4(bs->bpb.lspf)))
if ((fs->rdcl = cv4(bs->bpb.rdcl)) < LOCLUS)
if (!(sc = cv2(bs->bpb.secs)) && !(sc = cv4(bs->bpb.lsecs)))
if (!(size = cv4(de->size)) && de->attr & FA_DIR) {
x = fs->fatsz != 32 ? cv2(buf) : cv4(buf);