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147 lines
4.1 KiB
147 lines
4.1 KiB
#!/usr/bin/env python3
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# Copyright (C) 2017 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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from __future__ import print_function
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import argparse
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import datetime
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import os
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import subprocess
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import sys
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"""Pulls all format files from an Android device.
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Usage: ./tools/pull_ftrace_format_files.py [-s serial] [-p directory_prefix]
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"""
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ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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ADB_PATH = os.path.join(ROOT_DIR, 'buildtools/android_sdk/platform-tools/adb')
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def adb(*cmd, **kwargs):
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serial = kwargs.get('serial', None)
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prefix = [ADB_PATH]
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if serial:
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prefix += ['-s', serial]
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cmd = prefix + list(cmd)
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output = subprocess.check_output(cmd).replace('\r', '')
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return output
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def get_devices():
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# adb devices output looks like:
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# List of devices attached
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# 557dccd8\tdevice
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# With a trailing newline.
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serials = [s.split('\t')[0] for s in adb('devices').split('\n')[1:] if s]
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return serials
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def ensure_output_directory_empty(path):
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if os.path.isfile(path):
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print('The output directory {} exists as a file.'.format(path))
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sys.exit(1)
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if os.path.isdir(path) and os.listdir(path):
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print('The output directory {} exists but is not empty.'.format(path))
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sys.exit(1)
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if not os.path.isdir(path):
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os.makedirs(path)
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def ensure_dir(path):
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try:
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os.makedirs(path)
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except OSError:
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if not os.path.isdir(path):
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raise
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def ensure_single_device(serial):
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serials = get_devices()
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if serial is None and len(serials) == 1:
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return serials[0]
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if serial in serials:
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return serial
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if not serials:
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print('No devices connected.')
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elif serial is None:
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print('More than one device connected, use -s.')
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else:
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print('No device with serial {} found.'.format(serial))
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sys.exit(1)
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def pull_format_files(serial, output_directory):
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# Pulling each file individually is 100x slower so we pipe all together then
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# split them on the host.
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cmd = "find /sys/kernel/debug/tracing/ " \
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"-name available_events -o " \
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"-name format -o " \
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"-name header_event -o " \
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"-name header_page | " \
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"grep -v '/instances/' | " \
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"while read f; do echo 'path:' $f; cat $f; done"
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output = adb('shell', cmd, serial=serial)
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sections = output.split('path: /sys/kernel/debug/tracing/')
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for section in sections:
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if not section:
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continue
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path, rest = section.split('\n', 1)
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path = os.path.join(output_directory, path)
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ensure_dir(os.path.dirname(path))
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with open(path, 'wb') as f:
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f.write(rest)
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# Produces output of the form: prefix_android_seed_N2F62_3.10.49
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def get_output_directory(prefix=None, serial=None):
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build_id = adb('shell', 'getprop', 'ro.build.id', serial=serial).strip()
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product = adb('shell', 'getprop', 'ro.build.product', serial=serial).strip()
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kernel = adb('shell', 'uname', '-r', serial=serial).split('-')[0].strip()
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parts = ['android', product, build_id, kernel]
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if prefix:
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parts = [prefix] + parts
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return '_'.join(parts)
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def main():
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parser = argparse.ArgumentParser(description='Pull format files.')
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parser.add_argument(
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'-p', dest='prefix', default=None, help='the output directory prefix')
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parser.add_argument(
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'-s',
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dest='serial',
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default=None,
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help='use device with the given serial')
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args = parser.parse_args()
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prefix = args.prefix
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serial = args.serial
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serial = ensure_single_device(serial)
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output_directory = get_output_directory(prefix, serial)
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ensure_output_directory_empty(output_directory)
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pull_format_files(serial, output_directory)
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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