rpm_patcher.py 文件源码

def __prepare(self):
        """
        Prepares the patching root ready for RPM patching.

        """
        global developer_disable_patching
        if developer_disable_patching:
            logging.debug("RPM patcher will not be prepared.")
            return
        graphs = self._graphs
        self.__prepare_image(graphs)
        self.patching_root = temporaries.mount_firmware(self.images_directory)
        host_arch = platform.machine()
        host_arches = self.__produce_architecture_synonyms_list(host_arch)
        if self.architecture not in host_arches:
            self.__deploy_qemu_package()

        combirepo_dir = os.path.abspath(os.path.dirname(__file__))
        rpmrebuild_file = os.path.join(combirepo_dir, 'data/rpmrebuild.tar')
        already_present_rpmrebuilds = files.find_fast(self.patching_root,
                                                      "rpmrebuild.*")
        for already_present_rpmrebuild in already_present_rpmrebuilds:
            if os.path.isdir(already_present_rpmrebuild):
                shutil.rmtree(already_present_rpmrebuild)
            elif os.path.isfile(already_present_rpmrebuild):
                os.remove(already_present_rpmrebuild)
        hidden_subprocess.call("Extracting the rpmrebuild ",
                               ["tar", "xf", rpmrebuild_file, "-C",
                                self.patching_root])

        queue = multiprocessing.Queue()
        child = multiprocessing.Process(target=self.__install_rpmrebuild,
                                        args=(queue,))
        child.start()
        child.join()
        if queue.empty():
            logging.error("Failed to install rpmrebuild into chroot.")
            sys.exit("Error.")
        else:
            result = queue.get()
            if result:
                logging.debug("Installation of rpmrebuild successfully "
                              "completed.")
            else:
                raise Exception("Impossible happened.")