Beispiel #1
0
static int
write_header_v1(struct save_data *save_data,
                struct ipset_node_cache *cache, ipset_node_id root)
{
    /* Output the magic number for an IP set, and the file format
     * version that we're going to write. */
    rii_check(cork_stream_consumer_data(save_data->stream, NULL, 0, true));
    rii_check(write_string(save_data->stream, MAGIC_NUMBER));
    rii_check(write_uint16(save_data->stream, 0x0001));

    /* Determine how many reachable nodes there are, to calculate the
     * size of the set. */
    size_t  nonterminal_count = ipset_node_reachable_count(cache, root);
    size_t  set_size =
        MAGIC_NUMBER_LENGTH +    /* magic number */
        sizeof(uint16_t) +        /* version number  */
        sizeof(uint64_t) +        /* length of set */
        sizeof(uint32_t) +        /* number of nonterminals */
        (nonterminal_count *     /* for each nonterminal: */
         (sizeof(uint8_t) +       /*   variable number */
          sizeof(uint32_t) +      /*   low pointer */
          sizeof(uint32_t)        /*   high pointer */
         ));

    /* If the root is a terminal, we need to add 4 bytes to the set
     * size, for storing the terminal value. */
    if (ipset_node_get_type(root) == IPSET_TERMINAL_NODE) {
        set_size += sizeof(uint32_t);
    }

    rii_check(write_uint64(save_data->stream, set_size));
    rii_check(write_uint32(save_data->stream, nonterminal_count));
    return 0;
}
Beispiel #2
0
size_t
ipset_node_memory_size(const struct ipset_node_cache *cache,
                       ipset_node_id node)
{
    return ipset_node_reachable_count(cache, node) * sizeof(struct ipset_node);
}