Function ExecAndWaitForResponseText

Source/Tools/FEXRootFSFetcher/Main.cpp:169–212

}

std::string ExecAndWaitForResponseText(const char* path, char* const* args) {
  int fd[2];
  pipe(fd);

  pid_t pid = fork();

  if (pid == 0) {
    close(fd[0]); // Close read side

    // Redirect stdout to pipe
    dup2(fd[1], STDOUT_FILENO);

    // Close stderr
    close(STDERR_FILENO);

    // We can now close the pipe since the duplications take care of the rest
    close(fd[1]);

    execvp(path, args);
    _exit(-1);
  } else {
    close(fd[1]); // Close write side

    // Nothing larger than this
    char Buffer[1024] {};
    std::string Output {};

    // Read the pipe until it closes
    while (size_t Size = read(fd[0], Buffer, sizeof(Buffer))) {
      Output += std::string_view(Buffer, Size);
    }

    int32_t Status {};
    while (waitpid(pid, &Status, 0) == -1 && errno == EINTR)
      ;
    if (WIFEXITED(Status)) {
      // Return what we've read
      close(fd[0]);
      return Output;
    }
  }

  return {};
}
} // namespace Exec

namespace WorkingAppsTester {