Returns an error if the condition is not met

zhouhao · zhouhao · commit 5ed551627ee4 · 2016-12-09T14:42:36.000+08:00
Signed-off-by: zhouhao &lt;zhouhao@cn.fujitsu.com&gt;
diff --git a/image/descriptor.go b/image/descriptor.go
@@ -54,7 +54,7 @@ func listReferences(w walker) (map[string]*descriptor, error) {
 
 	if err := w.walk(func(path string, info os.FileInfo, r io.Reader) error {
 		if info.IsDir() || !strings.HasPrefix(path, "refs") {
-			return nil
+			return nil, errors.New("Can't list References by this condition")
 		}
 
 		var d descriptor

Original file line number	Diff line number	Diff line change
`@@ -54,7 +54,7 @@ func listReferences(w walker) (map[string]*descriptor, error) {`
`54`	`54`
`55`	`55`	`if err := w.walk(func(path string, info os.FileInfo, r io.Reader) error {`
`56`	`56`	`if info.IsDir() \|\| !strings.HasPrefix(path, "refs") {`
`57`		`- return nil`
	`57`	`+ return nil, errors.New("Can't list References by this condition")`
`58`	`58`	`}`
`59`	`59`
`60`	`60`	`var d descriptor`