Files
clang-p2996/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
Dokyung Song 226866e115 [libFuzzer] Separate platform related macros out from FuzzerDefs.h into FuzzerPlatform.h, and adjust includes in other files.
Summary: This patch separates platform related macros in lib/fuzzer/FuzzerDefs.h into lib/fuzzer/FuzzerPlatform.h, and use FuzzerPlatform.h where necessary. This separation helps when compiling libFuzzer's interceptor module (under review); an unnecessary include of standard headers (such as string.h) may produce conflicts/ambiguation with the interceptor's declarations/definitions of library functions, which complicates interceptor implementation.

Reviewers: morehouse, hctim

Reviewed By: morehouse

Subscribers: krytarowski, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D83805
2020-07-14 21:31:56 +00:00

42 lines
1.1 KiB
C++

//===- 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