systemd/avoid-assertion-if-invalid-address-familily-is-passed-to-g.patch

From: Ludwig Nussel <ludwig.nussel@suse.de>
Date: Mon, 26 Nov 2012 09:49:42 +0100
Subject: avoid assertion if invalid address familily is passed to
 gethostbyaddr_r (bnc#791101)

---
 src/nss-myhostname/nss-myhostname.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/nss-myhostname/nss-myhostname.c b/src/nss-myhostname/nss-myhostname.c
index b0fb832..b3aaca8 100644
--- a/src/nss-myhostname/nss-myhostname.c
+++ b/src/nss-myhostname/nss-myhostname.c
@@ -384,6 +384,12 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
         struct address *addresses = NULL, *a;
         unsigned n_addresses = 0, n;
 
+        if (af != AF_INET && af != AF_INET6) {
+                *errnop = EAFNOSUPPORT;
+                *h_errnop = NO_DATA;
+                return NSS_STATUS_UNAVAIL;
+        }
+
         if (len != PROTO_ADDRESS_SIZE(af)) {
                 *errnop = EINVAL;
                 *h_errnop = NO_RECOVERY;
@@ -399,11 +405,6 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
 
                 if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0)
                         goto found;
-
-        } else {
-                *errnop = EAFNOSUPPORT;
-                *h_errnop = NO_DATA;
-                return NSS_STATUS_UNAVAIL;
         }
 
         ifconf_acquire_addresses(&addresses, &n_addresses);