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How to use grubby_install_backup method in autotest

Best Python code snippet using autotest_python

boottool.py

Source:boottool.py

...1154                o.write(libs_line)1155            else:1156                o.write(l)1157        o.close()1158    def grubby_install_backup(self, path):1159        '''1160        Backs up the current grubby binary to make room the one we'll build1161        :type path: string1162        :param path: path to the binary that should be backed up1163        '''1164        backup_path = '%s.boottool.bkp' % path1165        if (os.path.exists(path) and not os.path.exists(backup_path)):1166            try:1167                shutil.move(path, backup_path)1168            except Exception:1169                self.log.warn('Failed to backup the current grubby binary')1170    def grubby_install_fetch_tarball(self, topdir):1171        '''1172        Fetches and verifies the grubby source tarball1173        '''1174        tarball_name = os.path.basename(GRUBBY_TARBALL_URI)1175        # first look in the current directory1176        try:1177            tarball = tarball_name1178            f = open(tarball)1179        except Exception:1180            try:1181                # then the autotest source directory1182                # pylint: disable=E06111183                from autotest.client.shared.settings import settings1184                top_path = settings.get_value('COMMON', 'autotest_top_path')1185                tarball = os.path.join(top_path, tarball_name)1186                f = open(tarball)1187            except Exception:1188                # then try to grab it from github1189                try:1190                    tarball = os.path.join(topdir, tarball_name)1191                    urllib.urlretrieve(GRUBBY_TARBALL_URI, tarball)1192                    f = open(tarball)1193                except Exception:1194                    return None1195        tarball_md5 = md5.md5(f.read()).hexdigest()1196        if tarball_md5 != GRUBBY_TARBALL_MD5:1197            return None1198        return tarball1199    def grubby_build(self, topdir, tarball):1200        '''1201        Attempts to build grubby from the source tarball1202        '''1203        def log_lines(lines):1204            for line in lines:1205                self.log.debug(line.strip())1206        try:1207            find_header('popt.h')1208        except ValueError:1209            self.log.debug('No popt.h header present, skipping build')1210            return False1211        tarball_name = os.path.basename(tarball)1212        srcdir = os.path.join(topdir, 'src')1213        srcdir = self._extract_tarball(tarball, srcdir)1214        os.chdir(srcdir)1215        self.grubby_install_patch_makefile()1216        result = subprocess.Popen(['make'],1217                                  stdout=subprocess.PIPE,1218                                  stderr=subprocess.PIPE)1219        if result.wait() != 0:1220            self.log.debug('Failed to build grubby during "make" step')1221            log_lines(result.stderr.read().splitlines())1222            return False1223        install_root = os.path.join(topdir, 'install_root')1224        os.environ['DESTDIR'] = install_root1225        result = subprocess.Popen(['make', 'install'],1226                                  stdout=subprocess.PIPE,1227                                  stderr=subprocess.PIPE)1228        if result.wait() != 0:1229            self.log.debug('Failed to build grubby during "make install" step')1230            log_lines(result.stderr.read().splitlines())1231            return False1232        return True1233    def grubby_install(self, path=None):1234        '''1235        Attempts to install a recent enough version of grubby1236        So far tested on:1237           * Fedora 16 x86_641238           * Debian 6 x86_641239           * SuSE 12.1 x86_641240           * RHEL 4 on ia64 (with updated python 2.4)1241           * RHEL 5 on ia641242           * RHEL 6 on ppc641243        '''1244        if path is None:1245            if os.geteuid() == 0:1246                path = GRUBBY_DEFAULT_SYSTEM_PATH1247            else:1248                path = GRUBBY_DEFAULT_USER_PATH1249        topdir = tempfile.mkdtemp()1250        deps_klass = DISTRO_DEPS_MAPPING.get(detect_distro_type(), None)1251        if deps_klass is not None:1252            deps = deps_klass()1253            if not deps.check():1254                self.log.warn('Installing distro build deps for grubby. This '1255                              'may take a while, depending on bandwidth and '1256                              'actual number of packages to install')1257                if not deps.install():1258                    self.log.error('Failed to install distro build deps for '1259                                   'grubby')1260        tarball = self.grubby_install_fetch_tarball(topdir)1261        if tarball is None:1262            raise GrubbyInstallException('Failed to fetch grubby tarball')1263        srcdir = os.path.join(topdir, 'src')1264        install_root = os.path.join(topdir, 'install_root')1265        os.mkdir(install_root)1266        if not self.grubby_build(topdir, tarball):1267            raise GrubbyInstallException('Failed to build grubby')1268        self.grubby_install_backup(path)1269        grubby_bin = os.path.join(install_root, 'sbin', 'grubby')1270        inst_dir = os.path.dirname(path)1271        if not os.access(inst_dir, os.W_OK):1272            raise GrubbyInstallException('No permission to copy grubby '1273                                         'binary to directory "%s"' % inst_dir)1274        try:1275            shutil.copy(grubby_bin, path)1276        except Exception:1277            raise GrubbyInstallException('Failed to copy grubby binary to '1278                                         'directory "%s"' % inst_dir)1279        return path1280    def boot_once(self, title=None):1281        '''1282        Configures the bootloader to boot an entry only once...

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