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(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("/dev/null", "w");
37  if (!Temp)
38    return;
39  dup2(fileno(Temp), Fd);
40  fclose(Temp);
41}
42
43void SetThreadName(std::thread &thread, const std::string &name) {
44#if LIBFUZZER_LINUX || LIBFUZZER_FREEBSD
45  (void)pthread_setname_np(thread.native_handle(), name.c_str());
46#elif LIBFUZZER_NETBSD
47  (void)pthread_set_name_np(thread.native_handle(), "%s", name.c_str());
48#endif
49}
50
51} // namespace fuzzer
52
53#endif
54