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add libfuzzer custom mutator, minor enhancements and fixes

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This commit is contained in:
van Hauser
2020-09-10 15:26:46 +02:00
parent fdb0452245
commit 380051868a
62 changed files with 11668 additions and 20 deletions
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43
custom_mutators/libfuzzer/FuzzerUtilLinux.cpp Normal file
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//===- FuzzerUtilLinux.cpp - Misc utils for Linux. ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// Misc utils for Linux.
//===----------------------------------------------------------------------===//
#include "FuzzerPlatform.h"
#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD || \
LIBFUZZER_OPENBSD || LIBFUZZER_EMSCRIPTEN
#include "FuzzerCommand.h"
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
namespace fuzzer {
int ExecuteCommand(const Command &Cmd) {
std::string CmdLine = Cmd.toString();
int exit_code = system(CmdLine.c_str());
if (WIFEXITED(exit_code)) return WEXITSTATUS(exit_code);
return exit_code;
}
void DiscardOutput(int Fd) {
FILE *Temp = fopen("/dev/null", "w");
if (!Temp) return;
dup2(fileno(Temp), Fd);
fclose(Temp);
}
} // namespace fuzzer
#endif