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
16#ifndef OHOS_FILEMGMT_DENTRY_FILE_UTILS_H
17#define OHOS_FILEMGMT_DENTRY_FILE_UTILS_H
18
19#include <string>
20#include <sys/stat.h>
21
22namespace OHOS {
23namespace FileManagement {
24class FileUtils {
25public:
26    FileUtils() = delete;
27    ~FileUtils() = delete;
28
29    static int64_t ReadFile(int fd, off_t offset, size_t size, void *data);
30    static int64_t WriteFile(int fd, const void *data, off_t offset, size_t size);
31};
32
33class FileRangeLock {
34public:
35    FileRangeLock(int fd, off_t offset, size_t size);
36    ~FileRangeLock();
37
38private:
39    int fd_{-1};
40    off_t offset_{0};
41    size_t size_{0};
42    bool lockFailed_{false};
43    int xcollieId_{0};
44};
45} // namespace FileManagement
46} // namespace OHOS
47
48#endif
49