From e2b4b426b4e3b291c90302d967c6a864ff01b008 Mon Sep 17 00:00:00 2001
From: Troels Thomsen <troels@thomsen.io>
Date: Tue, 1 Dec 2015 22:21:22 +0100
Subject: [PATCH] Define error type

Signed-off-by: Troels Thomsen <troels@thomsen.io>
---
 errors.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/errors.go b/errors.go
index eb332d1b..7bf720e0 100644
--- a/errors.go
+++ b/errors.go
@@ -89,3 +89,14 @@ type ErrManifestBlobUnknown struct {
 func (err ErrManifestBlobUnknown) Error() string {
 	return fmt.Sprintf("unknown blob %v on manifest", err.Digest)
 }
+
+// ErrManifestNameInvalid should be used to denote an invalid manifest
+// name. Reason may set, indicating the cause of invalidity.
+type ErrManifestNameInvalid struct {
+	Name   string
+	Reason error
+}
+
+func (err ErrManifestNameInvalid) Error() string {
+	return fmt.Sprintf("manifest name %q invalid: %v", err.Name, err.Reason)
+}