From f183fdd024bfa87e929219ac537b7090eabae9b1 Mon Sep 17 00:00:00 2001 From: Steven Moreland Date: Tue, 27 Oct 2020 00:12:12 +0000 Subject: libbinder: support TF_CLEAR_BUF This flag instructs the kernel to clear transactions from send/reply buffers for certain transactions which may contain sensitive data, as a security precaution. Bug: 171501998 Test: binderLibTest (only checks there is no error) Change-Id: I69d732e5cc2b15472dc52d47c66716bc1b3be6ae --- libs/binder/Utils.cpp | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 libs/binder/Utils.cpp (limited to 'libs/binder/Utils.cpp') diff --git a/libs/binder/Utils.cpp b/libs/binder/Utils.cpp new file mode 100644 index 0000000000..90a4502ec5 --- /dev/null +++ b/libs/binder/Utils.cpp @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2020 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. + */ + +#include "Utils.h" + +#include + +namespace android { + +void zeroMemory(uint8_t* data, size_t size) { + memset(data, 0, size); +} + +} // namespace android -- cgit v1.2.3-59-g8ed1b