1 /* 2 * Copyright (c) 2023 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 CLOUD_FILE_DAEMON_CLOUD_DISK_INODE_H 16 #define CLOUD_FILE_DAEMON_CLOUD_DISK_INODE_H 17 18 #include <atomic> 19 #include <memory> 20 #include <mutex> 21 #include <shared_mutex> 22 #include <string> 23 #include <sys/stat.h> 24 #include <sys/types.h> 25 #include <unistd.h> 26 #include <unordered_map> 27 28 #include "dk_asset_read_session.h" 29 #include "dk_database.h" 30 #include "file_operations_base.h" 31 32 namespace OHOS { 33 namespace FileManagement { 34 namespace CloudDisk { 35 36 enum CLOUD_DISK_INODE_LAYER { 37 CLOUD_DISK_INODE_ZERO_LAYER = 0, // data 38 CLOUD_DISK_INODE_FIRST_LAYER, // bundleName 39 CLOUD_DISK_INODE_OTHER_LAYER // others 40 }; 41 42 enum CLOUD_DISK_FILE_DIRTY { 43 CLOUD_DISK_FILE_UNKNOWN = 0, 44 CLOUD_DISK_FILE_CREATE, 45 CLOUD_DISK_FILE_WRITE 46 }; 47 48 struct CloudDiskInode { 49 int layer{CLOUD_DISK_INODE_ZERO_LAYER}; 50 struct stat stat; 51 std::string cloudId{"rootId"}; 52 std::string bundleName; 53 std::string location; 54 std::string fileName; 55 fuse_ino_t parent{0}; 56 std::atomic<int> refCount{0}; 57 std::string path; // just used in local file operation 58 59 /* ops means file operation that uses local or database */ 60 std::shared_ptr<FileOperationsBase> ops{nullptr}; 61 std::shared_ptr<DriveKit::DKAssetReadSession> readSession{nullptr}; 62 std::atomic<int> sessionRefCount{0}; 63 std::shared_mutex sessionLock; 64 }; 65 66 struct CloudDiskFile { 67 int fileDirty{CLOUD_DISK_FILE_UNKNOWN}; 68 std::atomic<int> refCount{0}; 69 }; 70 71 struct CloudDiskFuseData { 72 int userId; 73 std::shared_ptr<CloudDiskInode> rootNode{nullptr}; 74 std::unordered_map<std::string, std::shared_ptr<CloudDiskInode>> inodeCache; 75 std::unordered_map<std::string, std::shared_ptr<CloudDiskFile>> fileCache; 76 std::shared_mutex cacheLock; 77 std::shared_mutex fileLock; 78 struct fuse_session *se; 79 }; 80 } // namespace CloudDisk 81 } // namespace FileManagement 82 } // namespace OHOS 83 #endif // CLOUD_FILE_DAEMON_CLOUD_DISK_INODE_H 84