1 /* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 #ifndef SAFE_READER_H 16 #define SAFE_READER_H 17 18 #include <cstdio> 19 #include <stdint.h> 20 21 #include "dfx_define.h" 22 23 class SafeReader { 24 public: 25 SafeReader(); 26 ~SafeReader(); 27 SafeReader(const SafeReader&) = delete; 28 SafeReader& operator=(const SafeReader&) = delete; 29 30 NO_SANITIZE size_t CopyReadbaleBufSafe(uintptr_t destPtr, size_t destLen, uintptr_t srcPtr, size_t srcLen); 31 32 private: 33 NO_SANITIZE bool IsReadbaleAddr(uintptr_t addr); 34 static uintptr_t GetCurrentPageEndAddr(uintptr_t addr); 35 36 int pfd_[PIPE_NUM_SZ] = {-1, -1}; 37 }; 38 39 #endif // READ_SAFE_H 40