/* * Copyright 2017 Google Inc. * * 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. * * * An earlier version of this file was originally released into the public * domain by its authors. It has been modified to make the code compile and * link as part of the Google Authenticator project. These changes are * copyrighted by Google Inc. and released under the Apache License, * Version 2.0. * * The previous authors' terms are included below: */ /***************************************************************************** * * File:    util.c * * Purpose: Collection of cross file utility functions. * * This code is in the public domain * ***************************************************************************** */ #ifndef HAVE_EXPLICIT_BZERO#include <string.h> void explicit_bzero(void *s, size_t len) {  memset(s, '\0', len);  asm volatile("" ::: "memory");}#endif