libcni: up-convert a Config to a ConfigList when no other configs are found.

cnitool/cni.go

@@ -1,4 +1,4 @@
-// Copyright 2015 CoreOS, Inc.
+// Copyright 2015 CNI authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -42,7 +42,7 @@ func main() {
 	if netdir == "" {
 		netdir = DefaultNetDir
 	}
-	netconf, err := libcni.LoadConf(netdir, os.Args[2])
+	netconf, err := libcni.LoadConfList(netdir, os.Args[2])
 	if err != nil {
 		exit(err)
 	}
@@ -61,10 +61,13 @@ func main() {
 
 	switch os.Args[1] {
 	case CmdAdd:
-		_, err := cninet.AddNetwork(netconf, rt)
+		result, err := cninet.AddNetworkList(netconf, rt)
+		if result != nil {
+			_ = result.Print()
+		}
 		exit(err)
 	case CmdDel:
-		exit(cninet.DelNetwork(netconf, rt))
+		exit(cninet.DelNetworkList(netconf, rt))
 	}
 }