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 36 void ota_set_fault_files(); 37 38 int ota_open(const char* path, int oflags); 39 40 int ota_open(const char* path, int oflags, mode_t mode); 41 42 FILE* ota_fopen(const char* filename, const char* mode); 43 44 size_t ota_fread(void* ptr, size_t size, size_t nitems, FILE* stream); 45 46 ssize_t ota_read(int fd, void* buf, size_t nbyte); 47 48 size_t ota_fwrite(const void* ptr, size_t size, size_t count, FILE* stream); 49 50 ssize_t ota_write(int fd, const void* buf, size_t nbyte); 51 52 int ota_fsync(int fd); 53 54 struct OtaCloser { 55 static void Close(int); 56 }; 57 58 using unique_fd = android::base::unique_fd_impl<OtaCloser>; 59 60 int ota_close(unique_fd& fd); 61 62 struct OtaFcloser { 63 void operator()(FILE*) const; 64 }; 65 66 using unique_file = std::unique_ptr<FILE, OtaFcloser>; 67 68 int ota_fclose(unique_file& fh); 69 70 #endif 71