75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Read configuration files in the OTA package to determine which files, if any, will trigger errors.
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*
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* OTA packages can be modified to trigger errors by adding a top-level
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* directory called .libotafault, which may optionally contain up to three
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* files called READ, WRITE, and FSYNC. Each one of these optional files
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* contains the name of a single file on the device disk which will cause
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* an IO error on the first call of the appropriate I/O action to that file.
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*
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* Example:
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* ota.zip
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* <normal package contents>
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* .libotafault
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* WRITE
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*
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* If the contents of the file WRITE were /system/build.prop, the first write
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* action to /system/build.prop would fail with EIO. Note that READ and
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* FSYNC files are absent, so these actions will not cause an error.
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*/
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#ifndef _UPDATER_OTA_IO_CFG_H_
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#define _UPDATER_OTA_IO_CFG_H_
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#include <string>
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#include <stdbool.h>
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#include "minzip/Zip.h"
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#define OTAIO_BASE_DIR ".libotafault"
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#define OTAIO_READ "READ"
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#define OTAIO_WRITE "WRITE"
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#define OTAIO_FSYNC "FSYNC"
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#define OTAIO_CACHE "CACHE"
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/*
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* Initialize libotafault by providing a reference to the OTA package.
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*/
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void ota_io_init(ZipArchive* za);
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/*
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* Return true if a config file is present for the given IO type.
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*/
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bool should_fault_inject(const char* io_type);
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/*
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* Return true if an EIO should occur on the next hit to /cache/saved.file
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* instead of the next hit to the specified file.
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*/
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bool should_hit_cache();
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/*
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* Return the name of the file that should cause an error for the
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* given IO type.
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*/
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std::string fault_fname(const char* io_type);
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#endif
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