builder/virtualbox: upload guest additions to VM

builder/virtualbox/builder.go

@@ -225,6 +225,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		new(stepTypeBootCommand),
 		new(stepWaitForSSH),
 		new(stepUploadVersion),
+		new(stepUploadGuestAdditions),
 		new(stepProvision),
 		new(stepShutdown),
 		new(stepExport),

builder/virtualbox/step_upload_guest_additions.go

@@ -0,0 +1,35 @@
+package virtualbox
+
+import (
+	"fmt"
+	"github.com/mitchellh/multistep"
+	"github.com/mitchellh/packer/packer"
+	"os"
+)
+
+// This step uploads a file containing the VirtualBox version, which
+// can be useful for various provisioning reasons.
+type stepUploadGuestAdditions struct{}
+
+func (s *stepUploadGuestAdditions) Run(state map[string]interface{}) multistep.StepAction {
+	comm := state["communicator"].(packer.Communicator)
+	config := state["config"].(*config)
+	guestAdditionsPath := state["guest_additions_path"].(string)
+	ui := state["ui"].(packer.Ui)
+
+	f, err := os.Open(guestAdditionsPath)
+	if err != nil {
+		state["error"] = fmt.Errorf("Error opening guest additions ISO: %s", err)
+		return multistep.ActionHalt
+	}
+
+	ui.Say("Upload VirtualBox guest additions ISO...")
+	if err := comm.Upload(config.GuestAdditionsPath, f); err != nil {
+		state["error"] = fmt.Errorf("Error uploading guest additions: %s", err)
+		return multistep.ActionHalt
+	}
+
+	return multistep.ActionContinue
+}
+
+func (s *stepUploadGuestAdditions) Cleanup(state map[string]interface{}) {}