FTW_PHYS
return nftw(path, (int (*)())fn, fd_limit, FTW_PHYS);
if ((flags & FTW_PHYS) ? lstat(path, &st) : stat(path, &st) < 0) {
if (!(flags & FTW_PHYS) && errno==ENOENT && !lstat(path, &st))
if (flags & FTW_PHYS) type = FTW_SL;