From 82ec567d5218e280f0e8911972f8dd1813d3abeb Mon Sep 17 00:00:00 2001
From: Josh Curl <hello@joshcurl.com>
Date: Sat, 27 Feb 2016 09:00:50 -0800
Subject: [PATCH] Warn if upgrading to the currently running version

---
 cmd/control/os.go | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/cmd/control/os.go b/cmd/control/os.go
index b02ffd28..2f59e4a5 100644
--- a/cmd/control/os.go
+++ b/cmd/control/os.go
@@ -193,10 +193,15 @@ func startUpgradeContainer(image string, stage, force, reboot bool) error {
 	}
 
 	if !stage {
-		fmt.Printf("Upgrading to %s\n", image)
+		imageSplit := strings.Split(image, ":")
+		if len(imageSplit) > 1 && imageSplit[1] == config.VERSION {
+			if !force && !yes(in, fmt.Sprintf("Already at version %s. Continue anyways", imageSplit[1])) {
+				os.Exit(1)
+			}
+		} else {
+			fmt.Printf("Upgrading to %s\n", image)
 
-		if !force {
-			if !yes(in, "Continue") {
+			if !force && !yes(in, "Continue") {
 				os.Exit(1)
 			}
 		}