b68408275b
1. Rename some variables to more detail 2. Fix a bug that occurs when system.img contains product, system_ext 3. Remove multithread code, it made performance worse :( before: 136.97s user 1070.22s system 290% cpu 6:55.84 total after: 56.29s user 76.95s system 105% cpu 2:06.84 total Bug: 138329983 Test: compare some images, and check if result is same as before Change-Id: I4cec27475283a34d063ad3251cfc5909c34071c1
118 lines
4.2 KiB
Python
118 lines
4.2 KiB
Python
#
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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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import os
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import subprocess
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import sys
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from collections import defaultdict
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from glob import glob
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from operator import itemgetter
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import hashlib
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import argparse
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import zipfile
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def silent_call(cmd):
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return subprocess.call(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL) == 0
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def sha1sum(f):
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with open(f, 'rb') as fin:
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return hashlib.sha1(fin.read()).hexdigest()
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def sha1sum_without_signing_key(filepath):
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apk = zipfile.ZipFile(filepath)
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l = []
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for f in sorted(apk.namelist()):
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if f.startswith('META-INF/'):
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continue
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l.append(hashlib.sha1(apk.read(f)).hexdigest())
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l.append(f)
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return hashlib.sha1(",".join(l).encode()).hexdigest()
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def strip_and_sha1sum(filepath):
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strip_all = lambda: silent_call(["llvm-strip", "--strip-all", "-keep-section=.ARM.attributes", filepath, "-o", filepath + ".tmp"])
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remove_build_id = lambda: silent_call(["llvm-strip", "-remove-section=.note.gnu.build-id", filepath + ".tmp", "-o", filepath + ".tmp.no-build-id"])
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try:
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if strip_all() and remove_build_id():
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return sha1sum(filepath + ".tmp.no-build-id")
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else:
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return sha1sum(filepath)
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finally:
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if os.path.exists(filepath + ".tmp"):
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os.remove(filepath + ".tmp")
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if os.path.exists(filepath + ".tmp.no-build-id"):
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os.remove(filepath + ".tmp.no-build-id")
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return sha1sum(filepath)
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def main(all_targets, search_paths, ignore_signing_key=False):
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def get_target_name(path):
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return os.path.basename(os.path.normpath(path))
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artifact_target_map = defaultdict(list)
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for target in all_targets:
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def valid_path(p):
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if os.path.isdir(p) or not os.path.exists(p):
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return False
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for s in search_paths:
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if os.path.join(target, s).lower() + os.path.sep in p.lower():
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return True
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return False
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paths = [path for path in glob(os.path.join(
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target, "**", "*"), recursive=True) if valid_path(path)]
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def run(path):
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is_native_component = silent_call(["objdump", "-a", path])
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is_apk = path.endswith('.apk')
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if is_native_component:
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return strip_and_sha1sum(path), path[len(target):]
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elif is_apk and ignore_signing_key:
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return sha1sum_without_signing_key(path), path[len(target):]
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else:
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return sha1sum(path), path[len(target):]
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results = [run(p) for p in paths]
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for sha1, filename in results:
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artifact_target_map[(sha1, filename)].append(get_target_name(target))
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def pretty_print(sha1, filename, targets):
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return filename + ", " + sha1[:10] + ", " + ";".join(targets) + "\n"
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header = "filename, sha1sum, targets\n"
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def is_common(targets):
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return len(targets) == len(all_targets)
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common = sorted([pretty_print(sha1, filename, targets)
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for (sha1, filename), targets in artifact_target_map.items() if is_common(targets)])
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diff = sorted([pretty_print(sha1, filename, targets)
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for (sha1, filename), targets in artifact_target_map.items() if not is_common(targets)])
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with open("common.csv", 'w') as fout:
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fout.write(header)
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fout.writelines(common)
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with open("diff.csv", 'w') as fout:
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fout.write(header)
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fout.writelines(diff)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(prog="compare_images", usage="compare_images -t model1 model2 [model...] -s dir1 [dir...] [-i]")
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parser.add_argument("-t", "--target", nargs='+', required=True)
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parser.add_argument("-s", "--search_path", nargs='+', required=True)
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parser.add_argument("-i", "--ignore_signing_key", action='store_true')
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args = parser.parse_args()
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if len(args.target) < 2:
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parser.error("The number of targets has to be at least two.")
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main(args.target, args.search_path, args.ignore_signing_key)
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