52     struct addrinfo *ai;  in getaddrinfo()  local
54     ai = malloc(sizeof(struct addrinfo) + sizeof(struct sockaddr));  in getaddrinfo()
55     if (ai == NULL)  in getaddrinfo()
58     ai->ai_next = NULL;  in getaddrinfo()
59     ai->ai_canonname = NULL;  in getaddrinfo()
60     ai->ai_addr = (struct sockaddr *)(ai+1);  in getaddrinfo()
62     struct sockaddr_in *si = (struct sockaddr_in *)ai->ai_addr;  in getaddrinfo()
63     si->sin_len = ai->ai_addrlen = sizeof(struct sockaddr);  in getaddrinfo()
64     si->sin_family = ai->ai_family = AF_INET;  in getaddrinfo()
68         si->sin_family = ai->ai_family = hints->ai_family;  in getaddrinfo()
69         ai->ai_socktype = hints->ai_socktype;  in getaddrinfo()
73         freeaddrinfo(ai);  in getaddrinfo()
77     *res = ai;  in getaddrinfo()
83 freeaddrinfo(struct addrinfo *ai)  in freeaddrinfo()  argument
88         next = ai->ai_next;  in freeaddrinfo()
89         if (ai->ai_canonname)  in freeaddrinfo()
90             free(ai->ai_canonname);  in freeaddrinfo()
92         free(ai);  in freeaddrinfo()
93         ai = next;  in freeaddrinfo()
94     } while (ai);  in freeaddrinfo()