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authorUlrich Drepper <drepper@redhat.com>2007-10-15 16:30:38 +0000
committerUlrich Drepper <drepper@redhat.com>2007-10-15 16:30:38 +0000
commit2884dad43cc3c0cbf046caa0a96d7883e5ed0443 (patch)
tree09f8dd8cadc7d6fa256455f0aa3e1debac16158e /resolv
parent8d97ac135571fb7415d4331d925744eaae6df2e0 (diff)
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[BZ #3425]
2007-10-15  Ulrich Drepper  <drepper@redhat.com>
	[BZ #3425]
	* resolv/nss_dns/dns-host.c (getanswer_r): Fail with
	NSS_STATUS_NOTFOUND if the server replied with only a CNAME and no
	address record to T_A/T_AAAA requests.
Diffstat (limited to 'resolv')
-rw-r--r--resolv/nss_dns/dns-host.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index cf060be8ef..0e25564670 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -215,7 +215,7 @@ _nss_dns_gethostbyname3_r (const char *name, int af, struct hostent *result,
       map = 1;
 
       result->h_addrtype = AF_INET;
-      result->h_length = INADDRSZ;;
+      result->h_length = INADDRSZ;
     }
 
   status = getanswer_r (host_buffer.buf, n, name, type, result, buffer, buflen,
@@ -836,5 +836,9 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
  no_recovery:
   *h_errnop = NO_RECOVERY;
   *errnop = ENOENT;
-  return NSS_STATUS_TRYAGAIN;
+  /* Special case here: if the resolver sent a result but it only
+     contains a CNAME while we are looking for a T_A or T_AAAA record,
+     we fail with NOTFOUND instead of TRYAGAIN.  */
+  return ((qtype == T_A || qtype == T_AAAA) && ap != host_data->aliases
+	   ? NSS_STATUS_NOTFOUND : NSS_STATUS_TRYAGAIN);
 }