Blame SOURCES/glibc-rh1296031-2.patch
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commit 6b142b3a1d007d7e6f50c26710de7177bc4aca74
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Author: Andreas Schwab <schwab@suse.de>
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Date: Mon Jun 8 15:21:18 2015 +0200
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Record TTL also for DNS PTR queries (bug 18513)
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This allows nscd to manage proper TTL for GETHOSTBYADDR[v6] requests.
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2015-06-22 Andreas Schwab <schwab@suse.de>
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[BZ #18513]
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* resolv/nss_dns/dns-host.c (getanswer_r): Record TTL also for
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PTR queries.
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Index: glibc-2.17-c758a686/resolv/nss_dns/dns-host.c
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===================================================================
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--- glibc-2.17-c758a686.orig/resolv/nss_dns/dns-host.c
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+++ glibc-2.17-c758a686/resolv/nss_dns/dns-host.c
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@@ -800,6 +800,10 @@ getanswer_r (const querybuf *answer, int
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if (qtype == T_PTR && type == T_CNAME)
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{
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+ /* A CNAME could also have a TTL entry. */
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+ if (ttlp != NULL && ttl < *ttlp)
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+ *ttlp = ttl;
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+
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n = dn_expand (answer->buf, end_of_message, cp, tbuf, sizeof tbuf);
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if (__builtin_expect (n < 0 || res_dnok (tbuf) == 0, 0))
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{
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@@ -863,6 +867,8 @@ getanswer_r (const querybuf *answer, int
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++had_error;
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break;
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}
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+ if (ttlp != NULL && ttl < *ttlp)
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+ *ttlp = ttl;
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#if MULTI_PTRS_ARE_ALIASES
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cp += n;
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if (haveanswer == 0)
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