auto import from //depot/cupcake/@135843
diff --git a/include/cutils/dir_hash.h b/include/cutils/dir_hash.h
new file mode 100644
index 0000000..fbb4d02
--- /dev/null
+++ b/include/cutils/dir_hash.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+typedef enum {
+ SHA_1,
+} HashAlgorithm;
+
+int get_file_hash(HashAlgorithm algorithm, const char *path,
+ char *output_string, size_t max_output_string);
+
+int get_recursive_hash_manifest(HashAlgorithm algorithm,
+ const char *directory_path,
+ char **output_string);