文件操作 - mem_clr.c
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文件: /usr/local/src/openssl-1.1.1w/crypto/mem_clr.c
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/* * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include <string.h> #include <openssl/crypto.h> /* * Pointer to memset is volatile so that compiler must de-reference * the pointer and can't assume that it points to any function in * particular (such as memset, which it then might further "optimize") */ typedef void *(*memset_t)(void *, int, size_t); static volatile memset_t memset_func = memset; void OPENSSL_cleanse(void *ptr, size_t len) { memset_func(ptr, 0, len); }
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