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Diffstat (limited to 'resolv/nss_dns/dns-host.c')
-rw-r--r--resolv/nss_dns/dns-host.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 3b287b717a..ba83c440cc 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2004, 2007-2009, 2010, 2012 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2004, 2007-2010, 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Extended from original form by Ulrich Drepper <drepper@cygnus.com>, 1996.
@@ -744,6 +744,10 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
if ((qtype == T_A || qtype == T_AAAA) && type == T_CNAME)
{
+ /* A CNAME could also have a TTL entry. */
+ if (ttlp != NULL && ttl < *ttlp)
+ *ttlp = ttl;
+
if (ap >= &host_data->aliases[MAX_NR_ALIASES - 1])
continue;
n = dn_expand (answer->buf, end_of_message, cp, tbuf, sizeof tbuf);
@@ -905,7 +909,10 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
{
register int nn;
- if (ttlp != NULL)
+ /* We compose a single hostent out of the entire chain of
+ entries, so the TTL of the hostent is essentially the lowest
+ TTL in the chain. */
+ if (ttlp != NULL && ttl < *ttlp)
*ttlp = ttl;
if (canonp != NULL)
*canonp = bp;
@@ -1081,6 +1088,11 @@ gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
if (type == T_CNAME)
{
char tbuf[MAXDNAME];
+
+ /* A CNAME could also have a TTL entry. */
+ if (ttlp != NULL && ttl < *ttlp)
+ *ttlp = ttl;
+
n = dn_expand (answer->buf, end_of_message, cp, tbuf, sizeof tbuf);
if (__builtin_expect (n < 0 || res_hnok (tbuf) == 0, 0))
{
@@ -1161,7 +1173,10 @@ gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
if (*firstp)
{
- if (ttlp != NULL)
+ /* We compose a single hostent out of the entire chain of
+ entries, so the TTL of the hostent is essentially the lowest
+ TTL in the chain. */
+ if (ttlp != NULL && ttl < *ttlp)
*ttlp = ttl;
(*pat)->name = canon ?: h_name;