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;
}
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);
}