ceilto
df->df_total_data_size += ceilto(_region_size(data));
sz = ceilto(_CITRUS_DB_HEADER_SIZE);
sz += ceilto(_CITRUS_DB_ENTRY_SIZE * df->df_num_entries);
sz += ceilto(df->df_total_key_size);
for (i = ceilto(*rofs) - *rofs; i > 0; i--)
ceilto(df->df_num_entries*_CITRUS_DB_ENTRY_SIZE);
dataofs = keyofs + ceilto(df->df_total_key_size);