| # Copyright 2015 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import common |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.server import test |
| |
| |
| class brillo_Invariants(test.test): |
| """Check for things that should look the same on all Brillo devices.""" |
| version = 1 |
| |
| |
| def assert_path_test(self, path, test, negative=False): |
| """Performs a test against a path. |
| |
| See the man page for test(1) for valid tests (e.g. -e, -b, -d). |
| |
| @param path: the path to check. |
| @param test: the test to perform, without leading dash. |
| @param negative: if True, test for the negative. |
| """ |
| self.host.run('test %s -%s %s' % ('!' if negative else '', test, path)) |
| |
| |
| def assert_selinux_context(self, path, ctx): |
| """Checks the selinux context of a path. |
| |
| @param path: the path to check. |
| @param ctx: the selinux context to check for. |
| |
| @raises error.TestFail |
| """ |
| # Example output of 'ls -LZ /dev/block/by-name/misc' is: |
| # u:object_r:misc_block_device:s0 /dev/block/by-name/misc |
| tokens = self.host.run_output('ls -LZ %s' % path).split() |
| path_ctx = tokens[0] |
| if not ctx in path_ctx: |
| raise error.TestFail('Context "%s" for path "%s" does not ' |
| 'contain "%s"' % (path_ctx, path, ctx)) |
| |
| |
| def check_fstab_name(self): |
| """Checks that the fstab file has the name /fstab.<ro.hardware>. |
| """ |
| hardware = self.host.run_output('getprop ro.hardware') |
| self.assert_path_test('/fstab.%s' % hardware, 'e') |
| self.assert_path_test('/fstab.device', 'e', negative=True) |
| |
| |
| def check_block_devices(self): |
| """Checks required devices in /dev/block/by-name/ and their context. |
| """ |
| ctx = 'boot_block_device' |
| self.assert_selinux_context('/dev/block/by-name/boot_a', ctx) |
| self.assert_selinux_context('/dev/block/by-name/boot_b', ctx) |
| ctx = 'system_block_device' |
| self.assert_selinux_context('/dev/block/by-name/system_a', ctx) |
| self.assert_selinux_context('/dev/block/by-name/system_b', ctx) |
| ctx = 'misc_block_device' |
| self.assert_selinux_context('/dev/block/by-name/misc', ctx) |
| self.assert_path_test('/dev/block/by-name/userdata', 'b') |
| |
| |
| def run_once(self, host=None): |
| """Check for things that should look the same on all Brillo devices. |
| |
| @param dut: host object representing the device under test. |
| """ |
| self.host = host |
| self.check_fstab_name() |
| self.check_block_devices() |