88 lines
2.7 KiB
Python
Executable File
88 lines
2.7 KiB
Python
Executable File
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# Copyright (c) 2019 Huawei Technologies Co., Ltd.
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# A-Tune is licensed under the Mulan PSL v1.
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# You can use this software according to the terms and conditions of the Mulan PSL v1.
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# You may obtain a copy of Mulan PSL v1 at:
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# http://license.coscl.org.cn/MulanPSL
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# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
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# PURPOSE.
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# See the Mulan PSL v1 for more details.
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# Create: 2019-10-29
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"""
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The sub class of the Configurator, used to change the kernel config.
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"""
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import sys
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import logging
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import subprocess
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import re
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if __name__ == "__main__":
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sys.path.insert(0, "./../../")
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from configurator.common import *
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logger = logging.getLogger(__name__)
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class KernelConfig(Configurator):
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"""To change the kernel config"""
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_module = "KERNEL_CONFIG"
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_submod = "KERNEL_CONFIG"
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def __init__(self, user=None):
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Configurator.__init__(self, user)
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cfg_file = "/proc/config.gz"
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if os.path.isfile(cfg_file):
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self.__cfg_file = cfg_file
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else:
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self.__kernel_ver = subprocess.check_output(
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"uname -r".split()).decode().replace("\n", "")
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self.__cfg_file = "/boot/config-" + self.__kernel_ver
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def _set(self, key, value):
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if self.get(key) == value:
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return 0
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else:
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raise NeedConfigWarning(
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"Please change the kernel configuration {key} to {val}.".format(
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key=key, val=value))
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def _get(self, key):
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file_type = os.path.splitext(self.__cfg_file)[-1]
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if file_type == ".gz":
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with gzip.open(self.__cfg_file, 'rt') as f:
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cfgs = f.read()
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else:
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with open(self.__cfg_file, 'r') as f:
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cfgs = f.read()
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pattern = re.compile("^" + key + "=(.+)", re.ASCII | re.MULTILINE)
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searchObj = pattern.findall(cfgs)
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if len(searchObj) > 1:
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err = LookupError("find more than one " + key)
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logger.error(
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"{}.{}: {}".format(
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self.__class__.__name__,
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sys._getframe().f_code.co_name,
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str(err)))
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raise err
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return searchObj[0]
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def _backup(self, key, rollback_info):
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return ""
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def _resume(self, key, value):
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return None
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if __name__ == "__main__":
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if len(sys.argv) != 2:
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print('usage: ' + sys.argv[0] + ' key=value')
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sys.exit(-1)
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ct = KernelConfig("UT")
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print(ct.set(sys.argv[1]))
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print(ct.get(ct._getcfg(sys.argv[1])[0]))
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