From 7b2fb47ca8220a3ff8052242fc2f9027e2ee7c93 Mon Sep 17 00:00:00 2001
From: Vito Caputo <vito.caputo@coreos.com>
Date: Fri, 6 Feb 2015 19:04:17 -0800
Subject: [PATCH] rkt trust: print error when --prefix discovery finds nothing

---
 rkt/trust.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rkt/trust.go b/rkt/trust.go
index 06d3a7c..90ddca8 100644
--- a/rkt/trust.go
+++ b/rkt/trust.go
@@ -147,6 +147,10 @@ func getPubKeyLocations(prefix string, args []string) ([]string, error) {
 		return nil, fmt.Errorf("--prefix meta discovery error: %v", err)
 	}
 
+	if len(kls) == 0 {
+		return nil, fmt.Errorf("meta discovery on %s resulted in no keys", prefix)
+	}
+
 	return kls, nil
 }