1/*
2 * Copyright (c) 2021 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 UPDATER_RAW_WRITER_H
17#define UPDATER_RAW_WRITER_H
18
19#include <cstdio>
20#include <string>
21#include <sys/types.h>
22#include <unistd.h>
23#include "applypatch/data_writer.h"
24
25namespace Updater {
26class RawWriter : public DataWriter {
27public:
28    bool Write(const uint8_t *addr, size_t len, const void *context) override;
29
30    RawWriter(const std::string path, uint64_t offset) : fd_(-1), path_(path), offset_(offset) {}
31    RawWriter(const std::string path, uint64_t startAddr, uint64_t offset) : fd_(-1),
32        path_(path), offset_(startAddr + offset) {}
33
34    virtual ~RawWriter()
35    {
36        offset_ = 0;
37        if (fd_ > 0) {
38            fsync(fd_);
39            close(fd_);
40        }
41        fd_ = -1;
42    }
43private:
44    int WriteInternal(int fd, const uint8_t *data, size_t len);
45
46    RawWriter(const RawWriter&) = delete;
47
48    const RawWriter& operator=(const RawWriter&) = delete;
49    int fd_;
50    std::string path_;
51    off64_t offset_;
52};
53} // namespace Updater
54#endif /* UPDATER_RAW_WRITER_H */
55