lfs_cksum_part
extern u_int32_t lfs_cksum_part(void *, size_t, u_int32_t);
return lfs_cksum_fold(lfs_cksum_part(str, len, 0));
uint32_t lfs_cksum_part(void *, size_t, uint32_t);
foundsum = lfs_cksum_part(dbp->b_data,
foundsum = lfs_cksum_part(dbp->b_data,
sum = lfs_cksum_part((char *)