1 #!/usr/bin/python 2 # Copyright 2015 The Chromium Authors. All rights reserved. 3 # Use of this source code is governed by a BSD-style license that can be 4 # found in the LICENSE file. 5 6 """Utility for reading / writing command-line flag files on device(s).""" 7 8 import argparse 9 import sys 10 11 import devil_chromium 12 13 from devil.android import device_utils 14 from devil.android import device_errors 15 from devil.utils import cmd_helper 16 17 18 def main(): 19 parser = argparse.ArgumentParser(description=__doc__) 20 parser.usage = '''%(prog)s --device-path PATH [--device SERIAL] [flags...] 21 22 No flags: Prints existing command-line file. 23 Empty string: Deletes command-line file. 24 Otherwise: Writes command-line file. 25 26 ''' 27 parser.add_argument('-d', '--device', dest='devices', action='append', 28 default=[], help='Target device serial (repeatable).') 29 parser.add_argument('--device-path', required=True, 30 help='Remote path to flags file.') 31 parser.add_argument('-e', '--executable', dest='executable', default='chrome', 32 help='Name of the executable.') 33 args, remote_args = parser.parse_known_args() 34 35 devil_chromium.Initialize() 36 37 as_root = not args.device_path.startswith('/data/local/tmp/') 38 39 devices = device_utils.DeviceUtils.HealthyDevices(device_arg=args.devices, 40 default_retries=0) 41 all_devices = device_utils.DeviceUtils.parallel(devices) 42 43 def print_args(): 44 def read_flags(device): 45 try: 46 return device.ReadFile(args.device_path, as_root=as_root).rstrip() 47 except device_errors.AdbCommandFailedError: 48 return '' # File might not exist. 49 50 descriptions = all_devices.pMap(lambda d: d.build_description).pGet(None) 51 flags = all_devices.pMap(read_flags).pGet(None) 52 for d, desc, flags in zip(devices, descriptions, flags): 53 print ' %s (%s): %r' % (d, desc, flags) 54 55 # No args == print flags. 56 if not remote_args: 57 print 'Existing flags (in %s):' % args.device_path 58 print_args() 59 return 0 60 61 # Empty string arg == delete flags file. 62 if len(remote_args) == 1 and not remote_args[0]: 63 def delete_flags(device): 64 device.RunShellCommand(['rm', '-f', args.device_path], as_root=as_root) 65 all_devices.pMap(delete_flags).pGet(None) 66 print 'Deleted %s' % args.device_path 67 return 0 68 69 # Set flags. 70 quoted_args = ' '.join(cmd_helper.SingleQuote(x) for x in remote_args) 71 flags_str = ' '.join([args.executable, quoted_args]) 72 73 def write_flags(device): 74 device.WriteFile(args.device_path, flags_str, as_root=as_root) 75 device.RunShellCommand(['chmod', '0664', args.device_path], as_root=as_root) 76 77 all_devices.pMap(write_flags).pGet(None) 78 print 'Wrote flags to %s' % args.device_path 79 print_args() 80 return 0 81 82 83 if __name__ == '__main__': 84 sys.exit(main()) 85
