1 files changed, 13 insertions, 0 deletions
diff --git a/meta.go b/meta.go
index 0be4e94..cc62637 100644
--- a/meta.go
+++ b/meta.go
@@ -1,7 +1,20 @@
 package bolt
 
+import (
+	"errors"
+)
+
 const magic uint32 = 0xED0CDAED
 
+var (
+	// ErrInvalid is returned when a data file is not a Bolt-formatted database.
+	ErrInvalid = errors.New("invalid database")
+
+	// ErrVersionMismatch is returned when the data file was created with a
+	// different version of Bolt.
+	ErrVersionMismatch = errors.New("version mismatch")
+)
+
 type meta struct {
 	magic    uint32
 	version  uint32