From e9510eb69c0748a13771008c5cf750d46e53b937 Mon Sep 17 00:00:00 2001
From: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
Date: Mon, 6 Feb 2017 05:16:21 +0000
Subject: [PATCH] content: fix panic during filepath.Walk()

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
---
 content/content.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/content/content.go b/content/content.go
index 03bc1ff..453e5d5 100644
--- a/content/content.go
+++ b/content/content.go
@@ -173,6 +173,9 @@ func (cs *Store) Walk(fn WalkFunc) error {
 	root := filepath.Join(cs.root, "blobs")
 	var alg digest.Algorithm
 	return filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
 		if !fi.IsDir() && !alg.Available() {
 			return nil
 		}