Hector Dearman | 355d7ba | 2017-10-24 15:44:43 +0100 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | # Copyright (C) 2017 The Android Open Source Project |
| 3 | # |
| 4 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | # you may not use this file except in compliance with the License. |
| 6 | # You may obtain a copy of the License at |
| 7 | # |
| 8 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | # See the License for the specific language governing permissions and |
| 14 | # limitations under the License. |
| 15 | |
| 16 | from __future__ import print_function |
| 17 | import argparse |
| 18 | import datetime |
| 19 | import os |
| 20 | import subprocess |
| 21 | import sys |
| 22 | |
| 23 | """Pulls all format files from an Android device. |
| 24 | |
| 25 | Usage: ./tools/pull_ftrace_format_files.py [-s serial] [-p directory_prefix] |
| 26 | """ |
| 27 | |
| 28 | ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) |
| 29 | ADB_PATH = os.path.join(ROOT_DIR, 'buildtools/android_sdk/platform-tools/adb') |
| 30 | |
| 31 | def adb(*cmd, **kwargs): |
| 32 | serial = kwargs.get('serial', None) |
| 33 | prefix = [ADB_PATH] |
| 34 | if serial: |
| 35 | prefix += ['-s', serial] |
| 36 | cmd = prefix + list(cmd) |
Hector Dearman | 7d5b253 | 2017-10-26 16:55:51 +0100 | [diff] [blame] | 37 | output = subprocess.check_output(cmd).replace('\r', '') |
Hector Dearman | 355d7ba | 2017-10-24 15:44:43 +0100 | [diff] [blame] | 38 | return output |
| 39 | |
| 40 | |
| 41 | def get_devices(): |
| 42 | # adb devices output looks like: |
| 43 | # List of devices attached |
| 44 | # 557dccd8\tdevice |
| 45 | # With a trailing newline. |
| 46 | serials = [s.split('\t')[0] for s in adb('devices').split('\n')[1:] if s] |
| 47 | return serials |
| 48 | |
| 49 | |
| 50 | def ensure_output_directory_empty(path): |
| 51 | if os.path.isfile(path): |
| 52 | print('The output directory {} exists as a file.'.format(path)) |
| 53 | sys.exit(1) |
| 54 | |
| 55 | if os.path.isdir(path) and os.listdir(path): |
| 56 | print('The output directory {} exists but is not empty.'.format(path)) |
| 57 | sys.exit(1) |
| 58 | |
| 59 | if not os.path.isdir(path): |
| 60 | os.makedirs(path) |
| 61 | |
| 62 | |
| 63 | def ensure_dir(path): |
| 64 | try: |
| 65 | os.makedirs(path) |
| 66 | except OSError: |
| 67 | if not os.path.isdir(path): |
| 68 | raise |
| 69 | |
| 70 | |
| 71 | def ensure_single_device(serial): |
| 72 | serials = get_devices() |
| 73 | if serial is None and len(serials) == 1: |
| 74 | return serials[0] |
| 75 | |
| 76 | if serial in serials: |
| 77 | return serial |
| 78 | |
| 79 | if not serials: |
| 80 | print('No devices connected.') |
| 81 | elif serial is None: |
| 82 | print('More than one device connected, use -s.') |
| 83 | else: |
| 84 | print('No device with serial {} found.'.format(serial)) |
| 85 | sys.exit(1) |
| 86 | |
| 87 | |
| 88 | def pull_format_files(serial, output_directory): |
| 89 | # Pulling each file individually is 100x slower so we pipe all together then |
| 90 | # split them on the host. |
Hector Dearman | e02ebe1 | 2017-11-22 16:19:23 +0000 | [diff] [blame^] | 91 | cmd = "find /sys/kernel/debug/tracing/ " \ |
| 92 | "-name available_events -o " \ |
Hector Dearman | 355d7ba | 2017-10-24 15:44:43 +0100 | [diff] [blame] | 93 | "-name format -o " \ |
| 94 | "-name header_event -o " \ |
| 95 | "-name header_page | " \ |
| 96 | "while read f; do echo 'path:' $f; cat $f; done" |
| 97 | |
| 98 | output = adb('shell', cmd, serial=serial) |
Hector Dearman | e02ebe1 | 2017-11-22 16:19:23 +0000 | [diff] [blame^] | 99 | sections = output.split('path: /sys/kernel/debug/tracing/') |
Hector Dearman | 355d7ba | 2017-10-24 15:44:43 +0100 | [diff] [blame] | 100 | for section in sections: |
| 101 | if not section: |
| 102 | continue |
| 103 | path, rest = section.split('\n', 1) |
| 104 | path = os.path.join(output_directory, path) |
| 105 | ensure_dir(os.path.dirname(path)) |
| 106 | with open(path, 'wb') as f: |
| 107 | f.write(rest) |
| 108 | |
| 109 | |
| 110 | # Produces output of the form: prefix_android_seed_N2F62_3.10.49 |
Hector Dearman | 7d5b253 | 2017-10-26 16:55:51 +0100 | [diff] [blame] | 111 | def get_output_directory(prefix=None, serial=None): |
| 112 | build_id = adb('shell', 'getprop', 'ro.build.id', serial=serial).strip() |
| 113 | product = adb('shell', 'getprop', 'ro.build.product', serial=serial).strip() |
| 114 | kernel = adb('shell', 'uname', '-r', serial=serial).split('-')[0].strip() |
Hector Dearman | 355d7ba | 2017-10-24 15:44:43 +0100 | [diff] [blame] | 115 | parts = ['android', product, build_id, kernel] |
| 116 | if prefix: |
| 117 | parts = [prefix] + parts |
| 118 | return '_'.join(parts) |
| 119 | |
| 120 | |
| 121 | def main(): |
| 122 | parser = argparse.ArgumentParser(description='Pull format files.') |
| 123 | parser.add_argument('-p', dest='prefix', default=None, |
| 124 | help='the output directory prefix') |
| 125 | parser.add_argument('-s', dest='serial', default=None, |
| 126 | help='use device with the given serial') |
| 127 | args = parser.parse_args() |
| 128 | |
| 129 | prefix = args.prefix |
| 130 | serial = args.serial |
| 131 | |
| 132 | serial = ensure_single_device(serial) |
Hector Dearman | 7d5b253 | 2017-10-26 16:55:51 +0100 | [diff] [blame] | 133 | output_directory = get_output_directory(prefix, serial) |
Hector Dearman | 355d7ba | 2017-10-24 15:44:43 +0100 | [diff] [blame] | 134 | |
| 135 | ensure_output_directory_empty(output_directory) |
| 136 | pull_format_files(serial, output_directory) |
| 137 | |
| 138 | return 0 |
| 139 | |
| 140 | |
| 141 | if __name__ == '__main__': |
| 142 | sys.exit(main()) |
| 143 | |