1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17/*
18 * Provide a series of proxy functions for basic file accessors.
19 * The behavior of these functions can be changed to return different
20 * errors under a variety of conditions.
21 */
22
23#ifndef _UPDATER_OTA_IO_H_
24#define _UPDATER_OTA_IO_H_
25
26#include <stddef.h>
27#include <stdio.h>
28#include <sys/stat.h>  // mode_t
29
30#include <memory>
31
32#include <android-base/unique_fd.h>
33
34#define OTAIO_CACHE_FNAME "/cache/saved.file"
35
36void ota_set_fault_files();
37
38int ota_open(const char* path, int oflags);
39
40int ota_open(const char* path, int oflags, mode_t mode);
41
42FILE* ota_fopen(const char* filename, const char* mode);
43
44size_t ota_fread(void* ptr, size_t size, size_t nitems, FILE* stream);
45
46ssize_t ota_read(int fd, void* buf, size_t nbyte);
47
48size_t ota_fwrite(const void* ptr, size_t size, size_t count, FILE* stream);
49
50ssize_t ota_write(int fd, const void* buf, size_t nbyte);
51
52int ota_fsync(int fd);
53
54struct OtaCloser {
55  static void Close(int);
56};
57
58using unique_fd = android::base::unique_fd_impl<OtaCloser>;
59
60int ota_close(unique_fd& fd);
61
62struct OtaFcloser {
63  void operator()(FILE*) const;
64};
65
66using unique_file = std::unique_ptr<FILE, OtaFcloser>;
67
68int ota_fclose(unique_file& fh);
69
70#endif
71