#!/usr/bin/env python3
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#
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# Copyright (C) 2019 The Android Open Source Project
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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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#
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import subprocess
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import logging
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log = logging.getLogger(__name__)
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class AbiTool(object):
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""" Base class for different kinds of abi analysis tools"""
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def dump_kernel_abi(self, linux_tree, dump_path):
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raise NotImplementedError()
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def diff_abi(self, old_dump, new_dump, diff_report):
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raise NotImplementedError()
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def name(self):
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raise NotImplementedError()
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class Libabigail(AbiTool):
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"""" Concrete AbiTool implementation for libabigail """
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def dump_kernel_abi(self, linux_tree, dump_path):
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dump_abi_cmd = ['abidw',
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'--linux-tree',
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linux_tree,
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'--out-file',
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dump_path]
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subprocess.check_call(dump_abi_cmd)
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def diff_abi(self, old_dump, new_dump, diff_report):
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log.info('libabigail diffing: {} and {} at {}'.format(old_dump,
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new_dump,
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diff_report))
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diff_abi_cmd = ['abidiff',
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'--impacted-interfaces',
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'--leaf-changes-only',
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'--dump-diff-tree',
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old_dump,
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new_dump]
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with open(diff_report, 'w') as out:
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try:
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subprocess.check_call(diff_abi_cmd, stdout=out, stderr=out)
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except subprocess.CalledProcessError as e:
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if e.returncode in (1, 2): # abigail error, user error
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raise
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return True # actual abi change
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return False # no abi change
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def get_abi_tool(abi_tool):
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if abi_tool == 'libabigail':
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log.info('using libabigail for abi analysis')
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return Libabigail()
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raise ValueError("not a valid abi_tool: %s" % abi_tool)
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