92 lines
2.8 KiB
Python
92 lines
2.8 KiB
Python
# Copyright (c) 2015 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import logging
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import os
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from autotest_lib.client.bin import test, utils
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from autotest_lib.client.common_lib import error
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from autotest_lib.client.cros import kernel_config
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class kernel_FirmwareRequest(test.test):
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"""
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Test asynchronous firmware loading
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"""
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version = 1
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def set_module_locking(self, enabled):
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"""
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Enable/disable LSM request_firmware location locking
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Inspired by security_ModuleLocking
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"""
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sysctl = "/proc/sys/kernel/chromiumos/module_locking"
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value = '1\n' if enabled else '0\n'
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if os.path.exists(sysctl):
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open(sysctl, "w").write(value)
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else:
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raise error.TestNAError("module locking sysctl not available; may not be able to load test FW")
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def test_is_valid(self):
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"""
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Check if this test is worth running, based on whether the kernel
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.config has the right features
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"""
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config = kernel_config.KernelConfig()
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config.initialize()
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config.is_enabled('TEST_FIRMWARE')
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return len(config.failures()) == 0
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def do_fw_test(self):
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"""
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Run one iteration of the test
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Return non-zero if failed
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"""
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os.chdir(self.srcdir)
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ret = utils.system("./fw_filesystem.sh", ignore_status=True)
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if ret:
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raise error.TestFail("FW request test failed: %d" % (ret))
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def run_once(self):
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"""
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This test will run the firmware request kernel self test (from
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upstream). This tests that the request_firmware() and
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request_firmware_nowait() kernel APIs are somewhat sane. It tries to
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load the empty filename ("") as well as a small toy firmware, and
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checks that it matches. It also makes sure a non-existent firmware
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cannot be found.
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We rerun the same test several times to increase the probability of
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catching errors.
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Needs to disable module locking so we can load test firmwares from
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non-standard locations (e.g., /tmp)
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"""
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num_loops = 50
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module_name = "test_firmware"
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if not self.test_is_valid():
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raise error.TestNAError("FW test module is not available for this test")
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utils.load_module(module_name)
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if not utils.module_is_loaded(module_name):
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raise error.TestNAError("FW test module is not available for this test")
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try:
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self.set_module_locking(False)
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logging.info("iterations: %d", num_loops)
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for i in range(0, num_loops):
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self.do_fw_test()
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finally:
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self.set_module_locking(True)
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utils.unload_module(module_name)
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