143 static int dns_getaddrinfo(const char* name, const addrinfo* pai,
148 static bool files_getaddrinfo(const char* name, const addrinfo* pai, addrinfo** res);
180         (ai) = get_ai(pai, (afd), (addr));                   \
438 static int explore_fqdn(const struct addrinfo* pai, const char* hostname, const char* servname,  in explore_fqdn()  argument
443     assert(pai != NULL);  in explore_fqdn()
451     if (get_portmatch(pai, servname) != 0) return 0;  in explore_fqdn()
453     if (!files_getaddrinfo(hostname, pai, &result)) {  in explore_fqdn()
454         error = dns_getaddrinfo(hostname, pai, netcontext, &result);  in explore_fqdn()
476 static int explore_null(const struct addrinfo* pai, const char* servname, struct addrinfo** res) {  in explore_null()  argument
485     assert(pai != NULL);  in explore_null()
497     s = socket(pai->ai_family, SOCK_DGRAM | SOCK_CLOEXEC, 0);  in explore_null()
506     if (get_portmatch(pai, servname) != 0) return 0;  in explore_null()
508     afd = find_afd(pai->ai_family);  in explore_null()
511     if (pai->ai_flags & AI_PASSIVE) {  in explore_null()
531 static int explore_numeric(const struct addrinfo* pai, const char* hostname, const char* servname,  in explore_numeric()  argument
539     assert(pai != NULL);  in explore_numeric()
551     if (get_portmatch(pai, servname) != 0) return 0;  in explore_numeric()
553     afd = find_afd(pai->ai_family);  in explore_numeric()
557         if (pai->ai_family == afd->a_af || pai->ai_family == PF_UNSPEC /*?*/) {  in explore_numeric()
560             if ((pai->ai_flags & AI_CANONNAME)) {  in explore_numeric()
566                 error = get_canonname(pai, cur->ai_next, canonname);  in explore_numeric()
588 static int explore_numeric_scope(const struct addrinfo* pai, const char* hostname,  in explore_numeric_scope()  argument
598     assert(pai != NULL);  in explore_numeric_scope()
606     if (get_portmatch(pai, servname) != 0) return 0;  in explore_numeric_scope()
608     afd = find_afd(pai->ai_family);  in explore_numeric_scope()
611     if (!afd->a_scoped) return explore_numeric(pai, hostname, servname, res, hostname);  in explore_numeric_scope()
614     if (cp == NULL) return explore_numeric(pai, hostname, servname, res, hostname);  in explore_numeric_scope()
626     error = explore_numeric(pai, addr, servname, res, hostname);  in explore_numeric_scope()
646 static int get_canonname(const struct addrinfo* pai, struct addrinfo* ai, const char* str) {  in get_canonname()  argument
647     assert(pai != NULL);  in get_canonname()
651     if ((pai->ai_flags & AI_CANONNAME) != 0) {  in get_canonname()
658 static struct addrinfo* get_ai(const struct addrinfo* pai, const struct afd* afd,  in get_ai()  argument
663     assert(pai != NULL);  in get_ai()
670     memcpy(ai, pai, sizeof(struct addrinfo));  in get_ai()
829                                   const struct addrinfo* pai, int* herrno) {  in getanswer()  argument
848     assert(pai != NULL);  in getanswer()
984                 ai = *pai;  in getanswer()
1003             (void) get_canonname(pai, sentinel.ai_next, qname);  in getanswer()
1005             (void) get_canonname(pai, sentinel.ai_next, canonname);  in getanswer()
1381 static int dns_getaddrinfo(const char* name, const addrinfo* pai,  in dns_getaddrinfo()  argument
1389     switch (pai->ai_family) {  in dns_getaddrinfo()
1397             if (pai->ai_flags & AI_ADDRCONFIG) {  in dns_getaddrinfo()
1456     addrinfo* ai = getanswer(buf.get(), q.n, q.name, q.qtype, pai, &he);  in dns_getaddrinfo()
1462         ai = getanswer(buf2.get(), q2.n, q2.name, q2.qtype, pai, &he);  in dns_getaddrinfo()
1491 static struct addrinfo* _gethtent(FILE** hostf, const char* name, const struct addrinfo* pai) {  in _gethtent()  argument
1500     assert(pai != NULL);  in _gethtent()
1526     error = getaddrinfo_numeric(addr, nullptr, *pai, &res0);  in _gethtent()
1530         res->ai_flags = pai->ai_flags;  in _gethtent()
1532         if (pai->ai_flags & AI_CANONNAME) {  in _gethtent()
1533             if (get_canonname(pai, res, cname) != 0) {  in _gethtent()
1542 static bool files_getaddrinfo(const char* name, const addrinfo* pai, addrinfo** res) {  in files_getaddrinfo()  argument
1550     while ((p = _gethtent(&hostf, name, pai)) != NULL) {  in files_getaddrinfo()