commit 6e410597343716924ed4943d1eabd3dea614d325
author Paul Lawrence <paullawrence@google.com> Tue May 24 14:20:38 2016 -0700
committer Paul Lawrence <paullawrence@google.com> Fri May 27 09:40:37 2016 -0700
tree 3d18c1a2d364202edd2c2a748acda60bcd6a07e4
parent 3ae29e774038b423618a1618c0056108db77759e

Set encryption mode in mode file

Bug: 28905864
Change-Id: Ie2a5c3e029075d53a86ef3afb7fe364c16d8d52b

Ext4Crypt.cpp

diff --git a/Ext4Crypt.cpp b/Ext4Crypt.cpp
index 90fc411..28140d2 100644
--- a/Ext4Crypt.cpp
+++ b/Ext4Crypt.cpp
@@ -381,7 +381,9 @@
 }
 
 static bool ensure_policy(const std::string& raw_ref, const std::string& path) {
-    if (e4crypt_policy_ensure(path.c_str(), raw_ref.data(), raw_ref.size()) != 0) {
+    if (e4crypt_policy_ensure(path.c_str(),
+                              raw_ref.data(), raw_ref.size(),
+                              cryptfs_get_file_encryption_mode()) != 0) {
         LOG(ERROR) << "Failed to set policy on: " << path;
         return false;
     }
@@ -440,6 +442,13 @@
         return true;
     }
 
+    std::string mode_filename = std::string("/data") + e4crypt_key_mode;
+    std::string mode = cryptfs_get_file_encryption_mode();
+    if (!android::base::WriteStringToFile(mode, mode_filename)) {
+        PLOG(ERROR) << "Cannot save type";
+        return false;
+    }
+
     std::string device_key;
     if (path_exists(device_key_path)) {
         if (!android::vold::retrieveKey(device_key_path,