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/** @file */
/* based on http://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer/FuzzerInterface.h r321218 (20 Dec 2017) */
/* http://llvm.org/svn/llvm-project/compiler-rt/trunk/LICENSE.TXT follows */
/*
==============================================================================
compiler_rt License
==============================================================================
The compiler_rt library is dual licensed under both the University of Illinois
"BSD-Like" license and the MIT license. As a user of this code you may choose
to use it under either license. As a contributor, you agree to allow your code
to be used under both.
Full text of the relevant licenses is included below.
==============================================================================
University of Illinois/NCSA
Open Source License
Copyright (c) 2009-2016 by the contributors listed in CREDITS.TXT
All rights reserved.
Developed by:
LLVM Team
University of Illinois at Urbana-Champaign
http://llvm.org
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal with
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimers.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimers in the
documentation and/or other materials provided with the distribution.
* Neither the names of the LLVM Team, University of Illinois at
Urbana-Champaign, nor the names of its contributors may be used to
endorse or promote products derived from this Software without specific
prior written permission.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
SOFTWARE.
==============================================================================
Copyright (c) 2009-2015 by the contributors listed in CREDITS.TXT
SPDX-License-Identifier: MIT
==============================================================================
Copyrights and Licenses for Third Party Software Distributed with LLVM:
==============================================================================
The LLVM software contains code written by third parties. Such software will
have its own individual LICENSE.TXT file in the directory in which it appears.
This file will describe the copyrights, license, and restrictions which apply
to that code.
The disclaimer of warranty in the University of Illinois Open Source License
applies to all code in the LLVM Distribution, and nothing in any of the
other licenses gives permission to use the names of the LLVM Team or the
University of Illinois to endorse or promote products derived from this
Software.
*/
//===- FuzzerInterface.h - Interface header for the Fuzzer ------*- C++ -* ===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Define the interface between libFuzzer and the library being tested.
//===----------------------------------------------------------------------===//
// NOTE: the libFuzzer interface is thin and in the majority of cases
// you should not include this file into your target. In 95% of cases
// all you need is to define the following function in your file:
// extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
// WARNING: keep the interface in C.
#ifndef LLVM_FUZZER_INTERFACE_H
#define LLVM_FUZZER_INTERFACE_H
#include <stddef.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
// Mandatory user-provided target function.
// Executes the code under test with [Data, Data+Size) as the input.
// libFuzzer will invoke this function *many* times with different inputs.
// Must return 0.
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
// Optional user-provided initialization function.
// If provided, this function will be called by libFuzzer once at startup.
// It may read and modify argc/argv.
// Must return 0.
int LLVMFuzzerInitialize(int *argc, char ***argv);
// Optional user-provided custom mutator.
// Mutates raw data in [Data, Data+Size) inplace.
// Returns the new size, which is not greater than MaxSize.
// Given the same Seed produces the same mutation.
size_t LLVMFuzzerCustomMutator(uint8_t *Data, size_t Size, size_t MaxSize,
unsigned int Seed);
// Optional user-provided custom cross-over function.
// Combines pieces of Data1 & Data2 together into Out.
// Returns the new size, which is not greater than MaxOutSize.
// Should produce the same mutation given the same Seed.
size_t LLVMFuzzerCustomCrossOver(const uint8_t *Data1, size_t Size1,
const uint8_t *Data2, size_t Size2,
uint8_t *Out, size_t MaxOutSize,
unsigned int Seed);
// Experimental, may go away in future.
// libFuzzer-provided function to be used inside LLVMFuzzerCustomMutator.
// Mutates raw data in [Data, Data+Size) inplace.
// Returns the new size, which is not greater than MaxSize.
size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize);
#ifdef __cplusplus
} // extern "C"
#endif // __cplusplus
#endif // LLVM_FUZZER_INTERFACE_H
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