51 lines
1.8 KiB
C++
Executable File
51 lines
1.8 KiB
C++
Executable File
/*
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* Copyright 2020 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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#include <functional>
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#include "fuzzer/FuzzedDataProvider.h"
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#include "utils/RWLock.h"
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static constexpr int MAX_OPERATIONS = 100;
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static constexpr int MAX_NAME_LEN = 2048;
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static const std::vector<std::function<void(android::RWLock*)>> operations = {
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[](android::RWLock* lock) -> void {
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// This might return a non-zero value if already locked
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// Either way we are definitely locked now.
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lock->tryWriteLock();
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},
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[](android::RWLock* lock) -> void { lock->tryReadLock(); },
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[](android::RWLock* lock) -> void { lock->unlock(); },
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};
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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FuzzedDataProvider dataProvider(data, size);
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std::string nameStr = dataProvider.ConsumeRandomLengthString(MAX_NAME_LEN);
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int type = dataProvider.ConsumeIntegral<int>();
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android::RWLock rwLock = android::RWLock(type, nameStr.c_str());
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std::vector<uint8_t> opsToRun = dataProvider.ConsumeRemainingBytes<uint8_t>();
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int opsRun = 0;
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for (auto it : opsToRun) {
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if (opsRun++ >= MAX_OPERATIONS) {
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break;
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}
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it = it % operations.size();
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operations[it](&rwLock);
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}
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rwLock.unlock();
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return 0;
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}
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