mirror of https://github.com/google/oss-fuzz.git
89 lines
2.8 KiB
Python
89 lines
2.8 KiB
Python
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#!/usr/bin/python3
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# Copyright 2018 Google Inc.
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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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################################################################################
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import argparse
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import os
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import re
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import subprocess
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import sys
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def get_shared_libraries(binary_paths):
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"""Returns list of shared libraries used by specified binaries."""
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shared_libraries = []
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cmd = ['ldd']
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shared_library_path_re = re.compile(
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r'.*\.so[.0-9]*\s=>\s(.*' + os.getenv('OUT') + r'.*\.so[.0-9]*)\s.*')
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cmd.extend(binary_paths)
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output = subprocess.check_output(cmd).decode("utf-8", "ignore")
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for line in output.splitlines():
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match = shared_library_path_re.match(line)
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if not match:
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continue
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shared_library_path = match.group(1)
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if shared_library_path in shared_libraries:
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continue
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assert os.path.exists(shared_library_path), ('Shared library "%s" used by '
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'the given target(s) does not '
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'exist.' % shared_library_path)
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with open(shared_library_path, 'rb') as f:
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data = f.read()
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# Do not add non-instrumented libraries. Otherwise, llvm-cov errors outs.
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if b'__llvm_cov' in data:
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shared_libraries.append(shared_library_path)
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return shared_libraries
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def print_shared_libraries(args):
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if not args.object:
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print("ERROR: No binaries are specified.", file=sys.stderr)
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return 1
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paths = get_shared_libraries(args.object)
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if not paths:
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return 0
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# Print output in the format that can be passed to llvm-cov tool.
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output = ' '.join(['-object=%s' % path for path in paths])
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print(output)
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return 0
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def main():
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parser = argparse.ArgumentParser('coverage_helper',
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description='coverage script helper')
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subparsers = parser.add_subparsers(dest='command')
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shared_libs_parser = subparsers.add_parser('shared_libs',
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help='Detect shared libraries.')
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shared_libs_parser.add_argument('-object', action='append',
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help='Path to the binary using shared libs.')
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args = parser.parse_args()
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if args.command == 'shared_libs':
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return print_shared_libraries(args)
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if __name__ == '__main__':
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sys.exit(main())
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