[PATCH v4 1/7] io: Fix partial struct copy in qio_dns_resolver_lookup_sync_inet()

[Juraj Marcin <jmarcin@redhat.com>]

From: Juraj Marcin <jmarcin@redhat.com>

Commit aec21d3175 (qapi: Add InetSocketAddress member keep-alive)
introduces the keep-alive flag, but this flag is not copied together
with other options in qio_dns_resolver_lookup_sync_inet().

This patch fixes this issue and also prevents future ones by copying the
entire structure first and only then overriding a few attributes that
need to be different.

Fixes: aec21d31756c (qapi: Add InetSocketAddress member keep-alive)
Signed-off-by: Juraj Marcin <jmarcin@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
 io/dns-resolver.c | 21 +++++----------------
 1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/io/dns-resolver.c b/io/dns-resolver.c
index 53b0e8407a..3712438f82 100644
--- a/io/dns-resolver.c
+++ b/io/dns-resolver.c
@@ -111,22 +111,11 @@ static int qio_dns_resolver_lookup_sync_inet(QIODNSResolver *resolver,
                     uaddr, INET6_ADDRSTRLEN, uport, 32,
                     NI_NUMERICHOST | NI_NUMERICSERV);
 
-        newaddr->u.inet = (InetSocketAddress){
-            .host = g_strdup(uaddr),
-            .port = g_strdup(uport),
-            .has_numeric = true,
-            .numeric = true,
-            .has_to = iaddr->has_to,
-            .to = iaddr->to,
-            .has_ipv4 = iaddr->has_ipv4,
-            .ipv4 = iaddr->ipv4,
-            .has_ipv6 = iaddr->has_ipv6,
-            .ipv6 = iaddr->ipv6,
-#ifdef HAVE_IPPROTO_MPTCP
-            .has_mptcp = iaddr->has_mptcp,
-            .mptcp = iaddr->mptcp,
-#endif
-        };
+        newaddr->u.inet = *iaddr;
+        newaddr->u.inet.host = g_strdup(uaddr),
+        newaddr->u.inet.port = g_strdup(uport),
+        newaddr->u.inet.has_numeric = true,
+        newaddr->u.inet.numeric = true,
 
         (*addrs)[i] = newaddr;
     }
-- 
2.49.0