Support backup/restore of FBE policies
Change-Id: Iba8ef20f57b0fb57bb9406c53148a806441d0b59
diff --git a/crypto/ext4crypt/e4policyget.cpp b/crypto/ext4crypt/e4policyget.cpp
new file mode 100644
index 0000000..d217f18
--- /dev/null
+++ b/crypto/ext4crypt/e4policyget.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2016 Team Win Recovery 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "ext4crypt_tar.h"
+
+#define EXT4_KEY_DESCRIPTOR_SIZE 8
+#define EXT4_KEY_DESCRIPTOR_SIZE_HEX 17
+
+int main(int argc, char *argv[]) {
+ bool ret = false;
+ if (argc != 2) {
+ printf("Must specify a path\n");
+ return -1;
+ } else {
+ char e4crypt_policy[EXT4_KEY_DESCRIPTOR_SIZE];
+ if (e4crypt_policy_get(argv[1], e4crypt_policy, EXT4_KEY_DESCRIPTOR_SIZE, 0))
+ {
+ char* ptr = tar_policy;
+ memset(tar_policy, 0, sizeof(tar_policy));
+ char policy_hex[EXT4_KEY_DESCRIPTOR_SIZE_HEX];
+ policy_to_hex(e4crypt_policy, policy_hex);
+ printf("%s\n", policy_hex);
+ } else {
+ printf("No policy set\n");
+ }
+ }
+ return 0;
+}