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/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <iostream>
#include "android-base/file.h"
#include "fuzzer/FuzzedDataProvider.h"
#include "utils/FileMap.h"
static constexpr uint16_t MAX_STR_SIZE = 256;
static constexpr uint8_t MAX_FILENAME_SIZE = 32;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider dataProvider(data, size);
TemporaryFile tf;
// Generate file contents
std::string contents = dataProvider.ConsumeRandomLengthString(MAX_STR_SIZE);
// If we have string contents, dump them into the file.
// Otherwise, just leave it as an empty file.
if (contents.length() > 0) {
const char* bytes = contents.c_str();
android::base::WriteStringToFd(bytes, tf.fd);
}
android::FileMap m;
// Generate create() params
std::string orig_name = dataProvider.ConsumeRandomLengthString(MAX_FILENAME_SIZE);
size_t length = dataProvider.ConsumeIntegralInRange<size_t>(1, SIZE_MAX);
off64_t offset = dataProvider.ConsumeIntegralInRange<off64_t>(1, INT64_MAX);
bool read_only = dataProvider.ConsumeBool();
m.create(orig_name.c_str(), tf.fd, offset, length, read_only);
m.getDataOffset();
m.getFileName();
m.getDataLength();
m.getDataPtr();
int enum_index = dataProvider.ConsumeIntegral<int>();
m.advise(static_cast<android::FileMap::MapAdvice>(enum_index));
return 0;
}
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