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 ASHMEM_IMPL_H 16 #define ASHMEM_IMPL_H 17 18 #include "ashmem.h" 19 #include "ffi_remote_data.h" 20 #include "ipc_utils_ffi.h" 21 #include "securec.h" 22 23 namespace OHOS { 24 class AshmemImpl : public OHOS::FFI::FFIData { 25 DECL_TYPE(MessageSequenceImpl, OHOS::FFI::FFIData) 26 public: 27 enum { 28 PROT_EXEC = 4, 29 PROT_NONE = 0, 30 PROT_READ = 1, 31 PROT_WRITE = 2, 32 }; 33 explicit AshmemImpl(sptr<Ashmem> ashmem); 34 ~AshmemImpl() = default; GetAshmem()35 const sptr<Ashmem>& GetAshmem() 36 { 37 return ashmem_; 38 } SetAshmem(sptr<Ashmem> & ashmem)39 void SetAshmem(sptr<Ashmem>& ashmem) 40 { 41 ashmem_ = ashmem; 42 } 43 void CloseAshmem(); 44 int32_t GetAshmemSize(int32_t* errCode); 45 int32_t MapTypedAshmem(uint32_t mapType); 46 int32_t MapReadWriteAshmem(); 47 int32_t MapReadonlyAshmem(); 48 void UnmapAshmem(); 49 int32_t SetProtectionType(uint32_t protectionType); 50 int32_t WriteDataToAshmem(uint8_t* data, int64_t size, int64_t offset); 51 uint8_t* ReadDataFromAshmem(int64_t size, int64_t offset, int32_t* errCode); 52 53 private: 54 sptr<Ashmem> ashmem_; 55 }; 56 } // namespace OHOS 57 58 #endif