Adds the necessary changes to tpm_init to allow triggered initialization.

platform.cc

Index: platform.cc
diff --git a/platform.cc b/platform.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b07590f2baa15d631377c900efcfaaeda8c70a0a
--- /dev/null
+++ b/platform.cc
@@ -0,0 +1,30 @@
+// Copyright (c) 2009-2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Contains the implementation of class Platform
+
+#include "platform.h"
+
+#include <errno.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+namespace tpm_init {
+
+const int kDefaultUmask = S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH | S_IWOTH
+                               | S_IXOTH;
+
+Platform::Platform()
+    : umask_(kDefaultUmask) {
+}
+
+Platform::~Platform() {
+}
+
+int Platform::SetMask(int new_mask) {
+  return umask(new_mask);
+}
+
+} // namespace tpm_init