update.py 文件源码

def _update_s2e_sources(self):
        """
        Update all of the S2E repositories with repo.
        """
        repo = sh.Command(self.install_path('bin', 'repo'))

        # cd into the S2E source directory
        orig_dir = os.getcwd()
        os.chdir(self.source_path('s2e'))

        try:
            logger.info('Updating S2E')
            repo.sync(_out=sys.stdout, _err=sys.stderr, _fg=True)
        except ErrorReturnCode as e:
            raise CommandError(e)
        finally:
            # Change back to the original directory
            os.chdir(orig_dir)

        # Success!
        logger.success('Updated S2E')