forked from pool/glibc
c4fbe94a75
Fix two bugs in name resolving. OBS-URL: https://build.opensuse.org/request/show/127122 OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=200
48 lines
1.8 KiB
Diff
48 lines
1.8 KiB
Diff
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
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index 1a023f9..c8af8b9 100644
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--- a/sysdeps/posix/getaddrinfo.c
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+++ b/sysdeps/posix/getaddrinfo.c
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@@ -269,7 +269,7 @@ extern service_user *__nss_hosts_database attribute_hidden;
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static int
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gaih_inet (const char *name, const struct gaih_service *service,
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const struct addrinfo *req, struct addrinfo **pai,
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- unsigned int *naddrs)
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+ unsigned int *naddrs, bool usable_ipv6)
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{
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const struct gaih_typeproto *tp = gaih_inet_typeproto;
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struct gaih_servtuple *st = (struct gaih_servtuple *) &nullserv;
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@@ -832,7 +832,10 @@ gaih_inet (const char *name, const struct gaih_service *service,
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no_data = 0;
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nss_gethostbyname4_r fct4
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= __nss_lookup_function (nip, "gethostbyname4_r");
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- if (fct4 != NULL)
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+ /* If we don't want ipv6, don't use gethostbyname4_r,
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+ as it's using T_UNSPEC to libc_res_nsearch, which always
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+ create T_A and T_AAAA queries. */
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+ if (usable_ipv6 && fct4 != NULL)
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{
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int herrno;
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@@ -935,7 +938,7 @@ gaih_inet (const char *name, const struct gaih_service *service,
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if (fct != NULL)
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{
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if (req->ai_family == AF_INET6
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- || req->ai_family == AF_UNSPEC)
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+ || (req->ai_family == AF_UNSPEC && usable_ipv6))
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{
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gethosts (AF_INET6, struct in6_addr);
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no_inet6_data = no_data;
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@@ -2418,7 +2421,11 @@ getaddrinfo (const char *name, const char *service,
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if (hints->ai_family == AF_UNSPEC || hints->ai_family == AF_INET
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|| hints->ai_family == AF_INET6)
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{
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- last_i = gaih_inet (name, pservice, hints, end, &naddrs);
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+ if (!check_pf_called)
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+ __check_pf (&seen_ipv4, &seen_ipv6, &in6ai, &in6ailen);
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+ check_pf_called = true;
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+
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+ last_i = gaih_inet (name, pservice, hints, end, &naddrs, seen_ipv6);
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if (last_i != 0)
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{
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freeaddrinfo (p);
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