Set encryption mode in mode file

Bug: 28905864
Change-Id: Ie2a5c3e029075d53a86ef3afb7fe364c16d8d52b
diff --git a/cryptfs.c b/cryptfs.c
index eb9a8ed..a96d909 100644
--- a/cryptfs.c
+++ b/cryptfs.c
@@ -3855,3 +3855,9 @@
     return encrypt_master_key(password, ftr->salt, master_key, ftr->master_key,
                               ftr);
 }
+
+const char* cryptfs_get_file_encryption_mode()
+{
+    struct fstab_rec* rec = fs_mgr_get_entry_for_mount_point(fstab, DATA_MNT_POINT);
+    return fs_mgr_get_file_encryption_mode(rec);
+}