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# -*- coding: utf-8 -*-
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# Copyright 2015-2016 Mir Calculate. http://www.calculate-linux.org
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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import re
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from os import path
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from .files import typeFile, process
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from subprocess import Popen, PIPE
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from ..cl_lang import setLocalTranslate
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setLocalTranslate('cl_lib3', sys.modules[__name__])
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class InitrdFileError(Exception):
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pass
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class InitrdFile():
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"""
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Работа с initrd файлом
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"""
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re_kver_path = re.compile("/modules/([^/]+)/kernel")
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def __init__(self, _file):
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if not self.is_cpio(_file):
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raise InitrdFileError("%s is not initrd file" % _file)
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self._file = _file
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def get_kernel_version(self):
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for fn in self.get_names():
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if "/modules/" in fn and "/kernel" in fn:
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m = self.re_kver_path.search(fn)
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if m:
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return m.group(1)
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else:
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break
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return ""
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@staticmethod
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def skipcpio_data(fn):
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skipcpio_cmd = "/usr/lib/dracut/skipcpio"
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skipcpio = Popen([skipcpio_cmd, fn], stdout=PIPE, stderr=PIPE,
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close_fds=True)
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buf = skipcpio.stdout.read(1024*1024)
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skipcpio.terminate()
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skipcpio.poll()
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return buf
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@staticmethod
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def is_cpio(fn):
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buf = InitrdFile.skipcpio_data(fn)
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if not buf:
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return False
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buftype = typeFile(magic=0x4).getMTypeBuf
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return "ASCII cpio archive" in buftype(buf)
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def get_names(self):
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if not path.exists(self._file):
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# raise IOError
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with open(self._file, 'r'):
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pass
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buftype = typeFile(magic=0x4).getMTypeBuf
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rdtype = buftype(self.skipcpio_data(self._file))
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if "LZ4" in rdtype:
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arch_cmd = '/usr/bin/lz4'
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elif "XZ" in rdtype:
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arch_cmd = '/usr/bin/xz'
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elif "Zstandard" in rdtype:
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arch_cmd = "/usr/bin/zstd"
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else:
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arch_cmd = '/bin/gzip'
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skipcpio_cmd = "/usr/lib/dracut/skipcpio"
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skipcpio = Popen([skipcpio_cmd, self._file], stdout=PIPE, stderr=PIPE,
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close_fds=True)
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gz = Popen([arch_cmd, "-dc"], stdout=PIPE, stderr=PIPE,
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stdin=skipcpio.stdout, close_fds=True)
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cpio = Popen(["/bin/cpio", "-tf"], stdout=PIPE, stdin=gz.stdout,
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stderr=PIPE, close_fds=True)
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try:
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for fn in cpio.stdout:
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yield fn.rstrip().decode("UTF-8")
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finally:
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cpio.terminate()
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gz.terminate()
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skipcpio.terminate()
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def __iter__(self):
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return iter(self.get_names())
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