win2unixfn
int win2unixfn(struct mbnambuf *nbp, struct winentry *wep, int chksum,
chksum = win2unixfn(&nb,
win2unixfn(&namePart, entry, entry->weChksum, fatVolume);
chkSum = win2unixfn(&longName, reinterpret_cast<winentry*>(fatEntry), chkSum,