1//===- FuzzerUtilLinux.cpp - Misc utils for Linux. ------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8// Misc utils for Linux.
9//===----------------------------------------------------------------------===//
10#include "FuzzerPlatform.h"
11#if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD || \
12 LIBFUZZER_EMSCRIPTEN
13#include "FuzzerCommand.h"
14#include "FuzzerInternal.h"
15
16#include <signal.h>
17#include <stdlib.h>
18#include <sys/types.h>
19#include <sys/wait.h>
20#include <unistd.h>
21
22
23namespace fuzzer {
24
25int ExecuteCommand(const Command &Cmd) {
26 std::string CmdLine = Cmd.toString();
27 int exit_code = system(command: CmdLine.c_str());
28 if (WIFEXITED(exit_code))
29 return WEXITSTATUS(exit_code);
30 if (WIFSIGNALED(exit_code) && WTERMSIG(exit_code) == SIGINT)
31 return Fuzzer::InterruptExitCode();
32 return exit_code;
33}
34
35void DiscardOutput(int Fd) {
36 FILE* Temp = fopen(filename: "/dev/null", modes: "w");
37 if (!Temp)
38 return;
39 dup2(fd: fileno(stream: Temp), fd2: Fd);
40 fclose(stream: Temp);
41}
42
43void SetThreadName(std::thread &thread, const std::string &name) {
44#if LIBFUZZER_LINUX || LIBFUZZER_FREEBSD
45 (void)pthread_setname_np(target_thread: thread.native_handle(), name: name.c_str());
46#elif LIBFUZZER_NETBSD
47 (void)pthread_setname_np(thread.native_handle(), "%s", const_cast<char *>(name.c_str()));
48#endif
49}
50
51} // namespace fuzzer
52
53#endif
54