Method openExecutable

src/CLI/IPCSignalWatcher.cpp:171–193

  }

  void IPCSignalWatcher::openExecutable(const std::string& path)
  {
    const int fd = ::open(path.c_str(), O_RDONLY);

    if (fd < 0) {
      throw ErrnoException("openExecutable", path, errno);
    }

    struct ::stat st = { };

    if (::fstat(fd, &st) != 0) {
      ::close(fd);
      throw ErrnoException("openExecutable", path, errno);
    }

    if (!S_ISREG(st.st_mode) || !(st.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH))) {
      ::close(fd);
      throw Exception("openExecutable", path, "not an executable file");
    }

    _exec_path = path;
    _exec_path_fd = fd;
  }

  void IPCSignalWatcher::closeExecutable()
  {