storage/s3: fixed zero-length range

kopia · Oct 27, 2018 · 306fa0f · 306fa0f
1 parent 5dbb960
commit 306fa0f
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/storage/s3/s3_storage.go b/storage/s3/s3_storage.go
@@ -55,10 +55,14 @@ func (s *s3Storage) GetBlock(ctx context.Context, b string, offset, length int64
 			return nil, err
 		}
 
-		if len(b) != int(length) && length >= 0 {
+		if len(b) != int(length) && length > 0 {
 			return nil, fmt.Errorf("invalid length, got %v bytes, but expected %v", len(b), length)
 		}
 
+		if length == 0 {
+			return []byte{}, nil
+		}
+
 		return b, nil
 	}