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 
23 namespace fuzzer {
24 
25 int 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 
35 void 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 
43 } // namespace fuzzer
44 
45 #endif
46