ares_free_data(3)

ares_free_data3

Free data allocated by several c-ares functions

Usage

#include <ares.h>
void ares_free_data(void *dataptr)

Overview

The ares_free_data(3) function frees one or more data structures allocated and returned by several c-ares functions. Specifically the data returned by the following list of functions must be deallocated using this function.

ares_get_servers(3)

When used to free the data returned by ares_get_servers(3) this will free the whole linked list of ares_addr_node structures returned by ares_get_servers(3).

ares_parse_srv_reply(3)

When used to free the data returned by ares_parse_srv_reply(3) this will free the whole linked list of ares_srv_reply structures returned by ares_parse_srv_reply(3), along with any additional storage associated with those structures.

ares_parse_mx_reply(3)

When used to free the data returned by ares_parse_mx_reply(3) this will free the whole linked list of ares_mx_reply structures returned by ares_parse_mx_reply(3), along with any additional storage associated with those structures.

ares_parse_txt_reply(3)

When used to free the data returned by ares_parse_txt_reply(3) this will free the whole linked list of ares_txt_reply structures returned by ares_parse_txt_reply(3), along with any additional storage associated with those structures.

ares_parse_soa_reply(3)

When used to free the data returned by ares_parse_soa_reply(3) this will free the ares_soa_reply structure, along with any additional storage associated with those structure. ares_parse_uri_reply(3) When used to free the data returned by ares_parse_uri_reply(3) this will free list of ares_uri_reply structures, along with any additional storage associated with those structure.

Return value

The ares_free_data(3) function does not return a value.

Releases

9 releases since Debian 6.0 (Squeeze); the text changed 3 times.

  1. 6.0
  2. 7–11
  3. 12
  4. 13–Arch

Availability

This function was first introduced in c-ares version 1.7.0.

From c-ares 1.34.9-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.