[Qemu-block] [PATCH v3 03/14] block/nbd: Reject port parameter without host

[Max Reitz]

This is better than the generic block layer finding out later that the
port parameter has not been used.

Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
---
 block/nbd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/block/nbd.c b/block/nbd.c
index d9b946f..2112ec0 100644
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -201,6 +201,10 @@ static SocketAddress *nbd_config(BDRVNBDState *s, QDict 
*options, char **export,
         }
         return NULL;
     }
+    if (qdict_haskey(options, "port") && !qdict_haskey(options, "host")) {
+        error_setg(errp, "port may not be used without host");
+        return NULL;
+    }
 
     saddr = g_new0(SocketAddress, 1);
 
-- 
2.8.0