Alex Deymo | aea4c1c | 2015-08-19 20:24:43 -0700 | [diff] [blame] | 1 | // |
| 2 | // Copyright (C) 2013 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 | // |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 16 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 17 | #include "update_engine/hardware_chromeos.h" |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 18 | |
Ben Chan | 06c76a4 | 2014-09-05 08:21:06 -0700 | [diff] [blame] | 19 | #include <base/files/file_util.h> |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 20 | #include <base/logging.h> |
Alex Deymo | ebbe7ef | 2014-10-30 13:02:49 -0700 | [diff] [blame] | 21 | #include <base/strings/string_number_conversions.h> |
Alex Vakulenko | 75039d7 | 2014-03-25 12:36:28 -0700 | [diff] [blame] | 22 | #include <base/strings/string_util.h> |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 23 | #include <chromeos/make_unique_ptr.h> |
J. Richard Barnette | c7dd853 | 2013-10-29 16:30:46 -0700 | [diff] [blame] | 24 | #include <vboot/crossystem.h> |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 25 | |
Don Garrett | 83692e4 | 2013-11-08 10:11:30 -0800 | [diff] [blame] | 26 | extern "C" { |
| 27 | #include "vboot/vboot_host.h" |
| 28 | } |
| 29 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 30 | #include "update_engine/hardware.h" |
Chris Masone | f8d037f | 2014-02-19 01:53:00 +0000 | [diff] [blame] | 31 | #include "update_engine/hwid_override.h" |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 32 | #include "update_engine/subprocess.h" |
| 33 | #include "update_engine/utils.h" |
| 34 | |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 35 | using std::string; |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 36 | using std::vector; |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 37 | |
Alex Deymo | bccbc38 | 2014-04-03 13:38:55 -0700 | [diff] [blame] | 38 | namespace { |
| 39 | |
| 40 | static const char kOOBECompletedMarker[] = "/home/chronos/.oobe_completed"; |
| 41 | |
Alex Deymo | ebbe7ef | 2014-10-30 13:02:49 -0700 | [diff] [blame] | 42 | // The powerwash_count marker file contains the number of times the device was |
| 43 | // powerwashed. This value is incremented by the clobber-state script when |
| 44 | // a powerwash is performed. |
| 45 | static const char kPowerwashCountMarker[] = |
| 46 | "/mnt/stateful_partition/unencrypted/preserve/powerwash_count"; |
| 47 | |
Alex Deymo | bccbc38 | 2014-04-03 13:38:55 -0700 | [diff] [blame] | 48 | } // namespace |
| 49 | |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 50 | namespace chromeos_update_engine { |
| 51 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 52 | namespace hardware { |
| 53 | |
| 54 | // Factory defined in hardware.h. |
| 55 | std::unique_ptr<HardwareInterface> CreateHardware() { |
| 56 | return chromeos::make_unique_ptr(new HardwareChromeOS()); |
| 57 | } |
| 58 | |
| 59 | } // namespace hardware |
| 60 | |
| 61 | bool HardwareChromeOS::IsOfficialBuild() const { |
J. Richard Barnette | c7dd853 | 2013-10-29 16:30:46 -0700 | [diff] [blame] | 62 | return VbGetSystemPropertyInt("debug_build") == 0; |
J. Richard Barnette | 056b0ab | 2013-10-29 15:24:56 -0700 | [diff] [blame] | 63 | } |
| 64 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 65 | bool HardwareChromeOS::IsNormalBootMode() const { |
J. Richard Barnette | c7dd853 | 2013-10-29 16:30:46 -0700 | [diff] [blame] | 66 | bool dev_mode = VbGetSystemPropertyInt("devsw_boot") != 0; |
J. Richard Barnette | 056b0ab | 2013-10-29 15:24:56 -0700 | [diff] [blame] | 67 | LOG_IF(INFO, dev_mode) << "Booted in dev mode."; |
| 68 | return !dev_mode; |
| 69 | } |
| 70 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 71 | bool HardwareChromeOS::IsOOBEComplete(base::Time* out_time_of_oobe) const { |
Alex Deymo | bccbc38 | 2014-04-03 13:38:55 -0700 | [diff] [blame] | 72 | struct stat statbuf; |
| 73 | if (stat(kOOBECompletedMarker, &statbuf) != 0) { |
| 74 | if (errno != ENOENT) { |
| 75 | PLOG(ERROR) << "Error getting information about " |
| 76 | << kOOBECompletedMarker; |
| 77 | } |
| 78 | return false; |
| 79 | } |
| 80 | |
| 81 | if (out_time_of_oobe != nullptr) |
| 82 | *out_time_of_oobe = base::Time::FromTimeT(statbuf.st_mtime); |
| 83 | return true; |
| 84 | } |
| 85 | |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 86 | static string ReadValueFromCrosSystem(const string& key) { |
J. Richard Barnette | c7dd853 | 2013-10-29 16:30:46 -0700 | [diff] [blame] | 87 | char value_buffer[VB_MAX_STRING_PROPERTY]; |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 88 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 89 | const char* rv = VbGetSystemPropertyString(key.c_str(), value_buffer, |
J. Richard Barnette | c7dd853 | 2013-10-29 16:30:46 -0700 | [diff] [blame] | 90 | sizeof(value_buffer)); |
Alex Vakulenko | 88b591f | 2014-08-28 16:48:57 -0700 | [diff] [blame] | 91 | if (rv != nullptr) { |
J. Richard Barnette | c7dd853 | 2013-10-29 16:30:46 -0700 | [diff] [blame] | 92 | string return_value(value_buffer); |
Ben Chan | 736fcb5 | 2014-05-21 18:28:22 -0700 | [diff] [blame] | 93 | base::TrimWhitespaceASCII(return_value, base::TRIM_ALL, &return_value); |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 94 | return return_value; |
| 95 | } |
J. Richard Barnette | c7dd853 | 2013-10-29 16:30:46 -0700 | [diff] [blame] | 96 | |
| 97 | LOG(ERROR) << "Unable to read crossystem key " << key; |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 98 | return ""; |
| 99 | } |
| 100 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 101 | string HardwareChromeOS::GetHardwareClass() const { |
Chris Masone | f8d037f | 2014-02-19 01:53:00 +0000 | [diff] [blame] | 102 | if (USE_HWID_OVERRIDE) { |
| 103 | return HwidOverride::Read(base::FilePath("/")); |
| 104 | } |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 105 | return ReadValueFromCrosSystem("hwid"); |
| 106 | } |
| 107 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 108 | string HardwareChromeOS::GetFirmwareVersion() const { |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 109 | return ReadValueFromCrosSystem("fwid"); |
| 110 | } |
| 111 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 112 | string HardwareChromeOS::GetECVersion() const { |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 113 | string input_line; |
| 114 | int exit_code = 0; |
Alex Vakulenko | d0fdfb3 | 2014-02-21 15:26:26 -0800 | [diff] [blame] | 115 | vector<string> cmd = {"/usr/sbin/mosys", "-k", "ec", "info"}; |
J. Richard Barnette | 522d36f | 2013-10-28 17:22:12 -0700 | [diff] [blame] | 116 | |
| 117 | bool success = Subprocess::SynchronousExec(cmd, &exit_code, &input_line); |
| 118 | if (!success || exit_code) { |
| 119 | LOG(ERROR) << "Unable to read ec info from mosys (" << exit_code << ")"; |
| 120 | return ""; |
| 121 | } |
| 122 | |
| 123 | return utils::ParseECVersion(input_line); |
| 124 | } |
| 125 | |
Alex Deymo | 40d86b2 | 2015-09-03 22:27:10 -0700 | [diff] [blame^] | 126 | int HardwareChromeOS::GetPowerwashCount() const { |
Alex Deymo | ebbe7ef | 2014-10-30 13:02:49 -0700 | [diff] [blame] | 127 | int powerwash_count; |
| 128 | string contents; |
| 129 | if (!utils::ReadFile(kPowerwashCountMarker, &contents)) |
| 130 | return -1; |
| 131 | base::TrimWhitespaceASCII(contents, base::TRIM_TRAILING, &contents); |
| 132 | if (!base::StringToInt(contents, &powerwash_count)) |
| 133 | return -1; |
| 134 | return powerwash_count; |
| 135 | } |
| 136 | |
Alex Deymo | 4243291 | 2013-07-12 20:21:15 -0700 | [diff] [blame] | 137 | } // namespace chromeos_update_engine |