1 # 2 # Copyright (C) 2016 The Android Open Source Project 3 # 4 # Licensed under the Apache License, Version 2.0 (the "License"); 5 # you may not use this file except in compliance with the License. 6 # You may obtain a copy of the License at 7 # 8 # http://www.apache.org/licenses/LICENSE-2.0 9 # 10 # Unless required by applicable law or agreed to in writing, software 11 # distributed under the License is distributed on an "AS IS" BASIS, 12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 # See the License for the specific language governing permissions and 14 # limitations under the License. 15 # 16 17 from vts.runners.host import const 18 from vts.testcases.kernel.ltp.shell_environment.definitions.base_definitions import check_setup_cleanup 19 20 21 class LoopDeviceSupport(check_setup_cleanup.CheckSetupCleanup): 22 """Class for checking loopback device support.""" 23 note = "Kernel does not have loop device support" 24 25 def Check(self): 26 return not self.ExecuteShellCommand("ls /dev/loop-control")[const.EXIT_CODE][0] 27
