The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 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 | |
Tom Cherry | 3f5eaae5 | 2017-04-06 16:30:22 -0700 | [diff] [blame] | 17 | #include "init.h" |
| 18 | |
Rom Lemarchand | 6a52443 | 2015-02-28 06:39:11 -0800 | [diff] [blame] | 19 | #include <dirent.h> |
Elliott Hughes | 8d82ea0 | 2015-02-06 20:15:18 -0800 | [diff] [blame] | 20 | #include <fcntl.h> |
yusukes | 4a4ec14e | 2018-02-01 17:14:30 -0800 | [diff] [blame] | 21 | #include <pthread.h> |
Elliott Hughes | 8d82ea0 | 2015-02-06 20:15:18 -0800 | [diff] [blame] | 22 | #include <signal.h> |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 23 | #include <stdlib.h> |
| 24 | #include <string.h> |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 25 | #include <sys/eventfd.h> |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 26 | #include <sys/mount.h> |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 27 | #include <sys/signalfd.h> |
Elliott Hughes | 8d82ea0 | 2015-02-06 20:15:18 -0800 | [diff] [blame] | 28 | #include <sys/types.h> |
Elliott Hughes | 8d82ea0 | 2015-02-06 20:15:18 -0800 | [diff] [blame] | 29 | #include <unistd.h> |
| 30 | |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 31 | #define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_ |
| 32 | #include <sys/_system_properties.h> |
| 33 | |
Tom Cherry | 172c83f | 2019-06-26 14:44:37 -0700 | [diff] [blame] | 34 | #include <functional> |
Tom Cherry | 8ae7375 | 2018-05-01 13:39:52 -0700 | [diff] [blame] | 35 | #include <map> |
| 36 | #include <memory> |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 37 | #include <mutex> |
Tom Cherry | 8ae7375 | 2018-05-01 13:39:52 -0700 | [diff] [blame] | 38 | #include <optional> |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 39 | #include <thread> |
Tom Cherry | 172c83f | 2019-06-26 14:44:37 -0700 | [diff] [blame] | 40 | #include <vector> |
Tom Cherry | 8ae7375 | 2018-05-01 13:39:52 -0700 | [diff] [blame] | 41 | |
James Hawkins | e78ea77 | 2017-03-24 11:43:02 -0700 | [diff] [blame] | 42 | #include <android-base/chrono_utils.h> |
Elliott Hughes | 4f71319 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 43 | #include <android-base/file.h> |
Tom Cherry | 3f5eaae5 | 2017-04-06 16:30:22 -0700 | [diff] [blame] | 44 | #include <android-base/logging.h> |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 45 | #include <android-base/parseint.h> |
Tom Cherry | ccf2353 | 2017-03-28 16:40:41 -0700 | [diff] [blame] | 46 | #include <android-base/properties.h> |
Tom Cherry | 6f2d56d | 2018-02-21 10:37:44 -0800 | [diff] [blame] | 47 | #include <android-base/stringprintf.h> |
Elliott Hughes | 4f71319 | 2015-12-04 22:00:26 -0800 | [diff] [blame] | 48 | #include <android-base/strings.h> |
Bowgo Tsai | 1dacd42 | 2019-03-04 17:53:34 +0800 | [diff] [blame] | 49 | #include <fs_avb/fs_avb.h> |
David Ng | 90fd7bc | 2019-06-24 17:50:11 -0700 | [diff] [blame] | 50 | #include <fs_mgr.h> |
| 51 | #include <fs_mgr_dm_linear.h> |
| 52 | #include <fs_mgr_overlayfs.h> |
Justin Yun | 6bab0a9 | 2018-10-29 18:31:48 +0900 | [diff] [blame] | 53 | #include <fs_mgr_vendor_overlay.h> |
David Ng | 90fd7bc | 2019-06-24 17:50:11 -0700 | [diff] [blame] | 54 | |
Elliott Hughes | f8627ce | 2017-05-09 17:09:06 -0700 | [diff] [blame] | 55 | #include <keyutils.h> |
bowgotsai | 7635127 | 2017-02-14 22:06:20 +0800 | [diff] [blame] | 56 | #include <libavb/libavb.h> |
David Anderson | 372278c | 2019-02-14 12:46:13 -0800 | [diff] [blame] | 57 | #include <libgsi/libgsi.h> |
Colin Cross | f83d0b9 | 2010-04-21 12:04:20 -0700 | [diff] [blame] | 58 | #include <private/android_filesystem_config.h> |
Suren Baghdasaryan | 192aee7 | 2018-12-21 11:41:50 -0800 | [diff] [blame] | 59 | #include <processgroup/processgroup.h> |
Yifan Hong | bd623a4 | 2019-03-05 15:47:16 -0800 | [diff] [blame] | 60 | #include <processgroup/setup.h> |
Tom Cherry | d9e53da | 2018-09-05 15:37:26 -0700 | [diff] [blame] | 61 | #include <selinux/android.h> |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 62 | |
Tom Cherry | 0f6417f | 2018-02-13 15:25:29 -0800 | [diff] [blame] | 63 | #include "action_parser.h" |
Tom Cherry | 172c83f | 2019-06-26 14:44:37 -0700 | [diff] [blame] | 64 | #include "builtins.h" |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 65 | #include "epoll.h" |
Mark Salyzyn | 44505ec | 2019-05-08 12:44:50 -0700 | [diff] [blame] | 66 | #include "first_stage_init.h" |
Bill Peckham | 444b55f | 2018-08-31 14:51:14 -0700 | [diff] [blame] | 67 | #include "first_stage_mount.h" |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 68 | #include "import_parser.h" |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 69 | #include "keychords.h" |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 70 | #include "lmkd_service.h" |
Mark Salyzyn | a73ed22 | 2019-03-13 10:18:24 -0700 | [diff] [blame] | 71 | #include "mount_handler.h" |
Jiyong Park | 6866041 | 2019-01-16 23:00:59 +0900 | [diff] [blame] | 72 | #include "mount_namespace.h" |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 73 | #include "property_service.h" |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 74 | #include "proto_utils.h" |
Tom Cherry | 98ad32a | 2017-04-17 16:34:20 -0700 | [diff] [blame] | 75 | #include "reboot.h" |
Bill Peckham | 444b55f | 2018-08-31 14:51:14 -0700 | [diff] [blame] | 76 | #include "reboot_utils.h" |
Tom Cherry | 0c8d6d2 | 2017-08-10 12:22:44 -0700 | [diff] [blame] | 77 | #include "security.h" |
Vic Yang | 92c236e | 2019-05-28 15:58:35 -0700 | [diff] [blame] | 78 | #include "selabel.h" |
Tom Cherry | 0c8d6d2 | 2017-08-10 12:22:44 -0700 | [diff] [blame] | 79 | #include "selinux.h" |
Tom Cherry | 2aeb1ad | 2019-06-26 10:46:20 -0700 | [diff] [blame] | 80 | #include "service.h" |
| 81 | #include "service_parser.h" |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 82 | #include "sigchld_handler.h" |
Tom Cherry | e70c28b | 2020-04-28 13:55:19 -0700 | [diff] [blame] | 83 | #include "subcontext.h" |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 84 | #include "system/core/init/property_service.pb.h" |
Tom Cherry | bac3299 | 2015-07-31 12:45:25 -0700 | [diff] [blame] | 85 | #include "util.h" |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 86 | |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 87 | using namespace std::chrono_literals; |
Tom Cherry | 1c3a53f | 2017-06-22 16:50:31 -0700 | [diff] [blame] | 88 | using namespace std::string_literals; |
| 89 | |
James Hawkins | e78ea77 | 2017-03-24 11:43:02 -0700 | [diff] [blame] | 90 | using android::base::boot_clock; |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 91 | using android::base::ConsumePrefix; |
Tom Cherry | ccf2353 | 2017-03-28 16:40:41 -0700 | [diff] [blame] | 92 | using android::base::GetProperty; |
Tom Cherry | 6f2d56d | 2018-02-21 10:37:44 -0800 | [diff] [blame] | 93 | using android::base::ReadFileToString; |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 94 | using android::base::SetProperty; |
Tom Cherry | 6f2d56d | 2018-02-21 10:37:44 -0800 | [diff] [blame] | 95 | using android::base::StringPrintf; |
Tom Cherry | ede0d53 | 2017-07-06 14:20:11 -0700 | [diff] [blame] | 96 | using android::base::Timer; |
Tom Cherry | 6f2d56d | 2018-02-21 10:37:44 -0800 | [diff] [blame] | 97 | using android::base::Trim; |
Bowgo Tsai | 1dacd42 | 2019-03-04 17:53:34 +0800 | [diff] [blame] | 98 | using android::fs_mgr::AvbHandle; |
David Ng | 90fd7bc | 2019-06-24 17:50:11 -0700 | [diff] [blame] | 99 | using android::fs_mgr::Fstab; |
| 100 | using android::fs_mgr::ReadDefaultFstab; |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 101 | |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 102 | namespace android { |
| 103 | namespace init { |
| 104 | |
David Ng | 90fd7bc | 2019-06-24 17:50:11 -0700 | [diff] [blame] | 105 | namespace { |
| 106 | bool DeferOverlayfsMount() { |
| 107 | std::string cmdline; |
| 108 | android::base::ReadFileToString("/proc/cmdline", &cmdline); |
| 109 | return cmdline.find("androidboot.defer_overlayfs_mount=1") != std::string::npos; |
| 110 | } |
| 111 | } |
| 112 | |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 113 | static int property_triggers_enabled = 0; |
| 114 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 115 | static int signal_fd = -1; |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 116 | static int property_fd = -1; |
Elliott Hughes | 929f407 | 2015-04-24 21:13:44 -0700 | [diff] [blame] | 117 | |
Tom Cherry | 0c19d6c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 118 | struct PendingControlMessage { |
| 119 | std::string message; |
| 120 | std::string name; |
| 121 | pid_t pid; |
| 122 | int fd; |
| 123 | }; |
| 124 | static std::mutex pending_control_messages_lock; |
| 125 | static std::queue<PendingControlMessage> pending_control_messages; |
| 126 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 127 | // Init epolls various FDs to wait for various inputs. It previously waited on property changes |
| 128 | // with a blocking socket that contained the information related to the change, however, it was easy |
| 129 | // to fill that socket and deadlock the system. Now we use locks to handle the property changes |
| 130 | // directly in the property thread, however we still must wake the epoll to inform init that there |
| 131 | // is a change to process, so we use this FD. It is non-blocking, since we do not care how many |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 132 | // times WakeMainInitThread() is called, only that the epoll will wake. |
| 133 | static int wake_main_thread_fd = -1; |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 134 | static void InstallInitNotifier(Epoll* epoll) { |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 135 | wake_main_thread_fd = eventfd(0, EFD_CLOEXEC); |
| 136 | if (wake_main_thread_fd == -1) { |
| 137 | PLOG(FATAL) << "Failed to create eventfd for waking init"; |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 138 | } |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 139 | auto clear_eventfd = [] { |
| 140 | uint64_t counter; |
| 141 | TEMP_FAILURE_RETRY(read(wake_main_thread_fd, &counter, sizeof(counter))); |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 142 | }; |
| 143 | |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 144 | if (auto result = epoll->RegisterHandler(wake_main_thread_fd, clear_eventfd); !result.ok()) { |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 145 | LOG(FATAL) << result.error(); |
| 146 | } |
| 147 | } |
| 148 | |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 149 | static void WakeMainInitThread() { |
| 150 | uint64_t counter = 1; |
| 151 | TEMP_FAILURE_RETRY(write(wake_main_thread_fd, &counter, sizeof(counter))); |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | static class PropWaiterState { |
| 155 | public: |
| 156 | bool StartWaiting(const char* name, const char* value) { |
| 157 | auto lock = std::lock_guard{lock_}; |
| 158 | if (waiting_for_prop_) { |
| 159 | return false; |
| 160 | } |
| 161 | if (GetProperty(name, "") != value) { |
| 162 | // Current property value is not equal to expected value |
| 163 | wait_prop_name_ = name; |
| 164 | wait_prop_value_ = value; |
| 165 | waiting_for_prop_.reset(new Timer()); |
| 166 | } else { |
| 167 | LOG(INFO) << "start_waiting_for_property(\"" << name << "\", \"" << value |
| 168 | << "\"): already set"; |
| 169 | } |
| 170 | return true; |
| 171 | } |
| 172 | |
| 173 | void ResetWaitForProp() { |
| 174 | auto lock = std::lock_guard{lock_}; |
| 175 | ResetWaitForPropLocked(); |
| 176 | } |
| 177 | |
| 178 | void CheckAndResetWait(const std::string& name, const std::string& value) { |
| 179 | auto lock = std::lock_guard{lock_}; |
| 180 | // We always record how long init waited for ueventd to tell us cold boot finished. |
| 181 | // If we aren't waiting on this property, it means that ueventd finished before we even |
| 182 | // started to wait. |
| 183 | if (name == kColdBootDoneProp) { |
| 184 | auto time_waited = waiting_for_prop_ ? waiting_for_prop_->duration().count() : 0; |
| 185 | std::thread([time_waited] { |
| 186 | SetProperty("ro.boottime.init.cold_boot_wait", std::to_string(time_waited)); |
| 187 | }).detach(); |
| 188 | } |
| 189 | |
| 190 | if (waiting_for_prop_) { |
| 191 | if (wait_prop_name_ == name && wait_prop_value_ == value) { |
| 192 | LOG(INFO) << "Wait for property '" << wait_prop_name_ << "=" << wait_prop_value_ |
| 193 | << "' took " << *waiting_for_prop_; |
| 194 | ResetWaitForPropLocked(); |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 195 | WakeMainInitThread(); |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 196 | } |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | // This is not thread safe because it releases the lock when it returns, so the waiting state |
| 201 | // may change. However, we only use this function to prevent running commands in the main |
| 202 | // thread loop when we are waiting, so we do not care about false positives; only false |
| 203 | // negatives. StartWaiting() and this function are always called from the same thread, so false |
| 204 | // negatives are not possible and therefore we're okay. |
| 205 | bool MightBeWaiting() { |
| 206 | auto lock = std::lock_guard{lock_}; |
| 207 | return static_cast<bool>(waiting_for_prop_); |
| 208 | } |
| 209 | |
| 210 | private: |
| 211 | void ResetWaitForPropLocked() { |
| 212 | wait_prop_name_.clear(); |
| 213 | wait_prop_value_.clear(); |
| 214 | waiting_for_prop_.reset(); |
| 215 | } |
| 216 | |
| 217 | std::mutex lock_; |
| 218 | std::unique_ptr<Timer> waiting_for_prop_{nullptr}; |
| 219 | std::string wait_prop_name_; |
| 220 | std::string wait_prop_value_; |
| 221 | |
| 222 | } prop_waiter_state; |
| 223 | |
| 224 | bool start_waiting_for_property(const char* name, const char* value) { |
| 225 | return prop_waiter_state.StartWaiting(name, value); |
| 226 | } |
| 227 | |
| 228 | void ResetWaitForProp() { |
| 229 | prop_waiter_state.ResetWaitForProp(); |
| 230 | } |
| 231 | |
| 232 | static class ShutdownState { |
| 233 | public: |
| 234 | void TriggerShutdown(const std::string& command) { |
| 235 | // We can't call HandlePowerctlMessage() directly in this function, |
| 236 | // because it modifies the contents of the action queue, which can cause the action queue |
| 237 | // to get into a bad state if this function is called from a command being executed by the |
| 238 | // action queue. Instead we set this flag and ensure that shutdown happens before the next |
| 239 | // command is run in the main init loop. |
| 240 | auto lock = std::lock_guard{shutdown_command_lock_}; |
| 241 | shutdown_command_ = command; |
| 242 | do_shutdown_ = true; |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 243 | WakeMainInitThread(); |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 244 | } |
| 245 | |
| 246 | std::optional<std::string> CheckShutdown() { |
| 247 | auto lock = std::lock_guard{shutdown_command_lock_}; |
| 248 | if (do_shutdown_ && !IsShuttingDown()) { |
| 249 | do_shutdown_ = false; |
| 250 | return shutdown_command_; |
| 251 | } |
| 252 | return {}; |
| 253 | } |
| 254 | |
| 255 | private: |
| 256 | std::mutex shutdown_command_lock_; |
| 257 | std::string shutdown_command_; |
| 258 | bool do_shutdown_ = false; |
| 259 | } shutdown_state; |
| 260 | |
Tom Cherry | 30a6f27 | 2017-04-19 15:31:58 -0700 | [diff] [blame] | 261 | void DumpState() { |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 262 | ServiceList::GetInstance().DumpState(); |
Tom Cherry | 30a6f27 | 2017-04-19 15:31:58 -0700 | [diff] [blame] | 263 | ActionManager::GetInstance().DumpState(); |
| 264 | } |
| 265 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 266 | Parser CreateParser(ActionManager& action_manager, ServiceList& service_list) { |
Tom Cherry | 67dee62 | 2017-07-27 12:54:48 -0700 | [diff] [blame] | 267 | Parser parser; |
| 268 | |
Tom Cherry | 14c2472 | 2019-09-18 13:47:19 -0700 | [diff] [blame] | 269 | parser.AddSectionParser("service", std::make_unique<ServiceParser>( |
Tom Cherry | e70c28b | 2020-04-28 13:55:19 -0700 | [diff] [blame] | 270 | &service_list, GetSubcontext(), std::nullopt)); |
| 271 | parser.AddSectionParser("on", std::make_unique<ActionParser>(&action_manager, GetSubcontext())); |
Tom Cherry | 67dee62 | 2017-07-27 12:54:48 -0700 | [diff] [blame] | 272 | parser.AddSectionParser("import", std::make_unique<ImportParser>(&parser)); |
| 273 | |
| 274 | return parser; |
| 275 | } |
| 276 | |
Jiyong Park | c240440 | 2018-11-08 17:14:35 +0900 | [diff] [blame] | 277 | // parser that only accepts new services |
Nikita Ioffe | 091c4d1 | 2019-12-05 12:35:19 +0000 | [diff] [blame] | 278 | Parser CreateServiceOnlyParser(ServiceList& service_list, bool from_apex) { |
Jiyong Park | c240440 | 2018-11-08 17:14:35 +0900 | [diff] [blame] | 279 | Parser parser; |
| 280 | |
Tom Cherry | e70c28b | 2020-04-28 13:55:19 -0700 | [diff] [blame] | 281 | parser.AddSectionParser( |
| 282 | "service", std::make_unique<ServiceParser>(&service_list, GetSubcontext(), std::nullopt, |
| 283 | from_apex)); |
Jiyong Park | c240440 | 2018-11-08 17:14:35 +0900 | [diff] [blame] | 284 | return parser; |
| 285 | } |
| 286 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 287 | static void LoadBootScripts(ActionManager& action_manager, ServiceList& service_list) { |
| 288 | Parser parser = CreateParser(action_manager, service_list); |
Tom Cherry | 67dee62 | 2017-07-27 12:54:48 -0700 | [diff] [blame] | 289 | |
| 290 | std::string bootscript = GetProperty("ro.boot.init_rc", ""); |
| 291 | if (bootscript.empty()) { |
Tom Cherry | c9f5353 | 2019-11-04 10:30:36 -0800 | [diff] [blame] | 292 | parser.ParseConfig("/system/etc/init/hw/init.rc"); |
Tom Cherry | 67dee62 | 2017-07-27 12:54:48 -0700 | [diff] [blame] | 293 | if (!parser.ParseConfig("/system/etc/init")) { |
| 294 | late_import_paths.emplace_back("/system/etc/init"); |
| 295 | } |
Justin Yun | 7eaf9b5 | 2019-06-28 14:28:00 +0900 | [diff] [blame] | 296 | // late_import is available only in Q and earlier release. As we don't |
| 297 | // have system_ext in those versions, skip late_import for system_ext. |
| 298 | parser.ParseConfig("/system_ext/etc/init"); |
Jaekyun Seok | dff165d | 2017-11-28 12:10:10 +0900 | [diff] [blame] | 299 | if (!parser.ParseConfig("/product/etc/init")) { |
| 300 | late_import_paths.emplace_back("/product/etc/init"); |
Tom Cherry | 67dee62 | 2017-07-27 12:54:48 -0700 | [diff] [blame] | 301 | } |
| 302 | if (!parser.ParseConfig("/odm/etc/init")) { |
| 303 | late_import_paths.emplace_back("/odm/etc/init"); |
| 304 | } |
Jaekyun Seok | dff165d | 2017-11-28 12:10:10 +0900 | [diff] [blame] | 305 | if (!parser.ParseConfig("/vendor/etc/init")) { |
| 306 | late_import_paths.emplace_back("/vendor/etc/init"); |
| 307 | } |
Tom Cherry | 67dee62 | 2017-07-27 12:54:48 -0700 | [diff] [blame] | 308 | } else { |
| 309 | parser.ParseConfig(bootscript); |
| 310 | } |
| 311 | } |
| 312 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 313 | void PropertyChanged(const std::string& name, const std::string& value) { |
Tom Cherry | 98ad32a | 2017-04-17 16:34:20 -0700 | [diff] [blame] | 314 | // If the property is sys.powerctl, we bypass the event queue and immediately handle it. |
| 315 | // This is to ensure that init will always and immediately shutdown/reboot, regardless of |
| 316 | // if there are other pending events to process or if init is waiting on an exec service or |
| 317 | // waiting on a property. |
Wei Wang | eeab491 | 2017-06-27 22:08:45 -0700 | [diff] [blame] | 318 | // In non-thermal-shutdown case, 'shutdown' trigger will be fired to let device specific |
| 319 | // commands to be executed. |
| 320 | if (name == "sys.powerctl") { |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 321 | trigger_shutdown(value); |
Wei Wang | eeab491 | 2017-06-27 22:08:45 -0700 | [diff] [blame] | 322 | } |
Tom Cherry | 98ad32a | 2017-04-17 16:34:20 -0700 | [diff] [blame] | 323 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 324 | if (property_triggers_enabled) { |
| 325 | ActionManager::GetInstance().QueuePropertyChange(name, value); |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 326 | WakeMainInitThread(); |
Tom Cherry | 39fafed | 2019-06-10 17:49:59 -0700 | [diff] [blame] | 327 | } |
| 328 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 329 | prop_waiter_state.CheckAndResetWait(name, value); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 330 | } |
| 331 | |
Tom Cherry | 73f535e | 2018-09-27 16:10:46 -0700 | [diff] [blame] | 332 | static std::optional<boot_clock::time_point> HandleProcessActions() { |
| 333 | std::optional<boot_clock::time_point> next_process_action_time; |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 334 | for (const auto& s : ServiceList::GetInstance()) { |
Tom Cherry | 73f535e | 2018-09-27 16:10:46 -0700 | [diff] [blame] | 335 | if ((s->flags() & SVC_RUNNING) && s->timeout_period()) { |
| 336 | auto timeout_time = s->time_started() + *s->timeout_period(); |
| 337 | if (boot_clock::now() > timeout_time) { |
| 338 | s->Timeout(); |
| 339 | } else { |
| 340 | if (!next_process_action_time || timeout_time < *next_process_action_time) { |
| 341 | next_process_action_time = timeout_time; |
| 342 | } |
| 343 | } |
| 344 | } |
| 345 | |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 346 | if (!(s->flags() & SVC_RESTARTING)) continue; |
Tom Cherry | d269e3a | 2017-07-31 13:23:18 -0700 | [diff] [blame] | 347 | |
Tom Cherry | 73f535e | 2018-09-27 16:10:46 -0700 | [diff] [blame] | 348 | auto restart_time = s->time_started() + s->restart_period(); |
Tom Cherry | d269e3a | 2017-07-31 13:23:18 -0700 | [diff] [blame] | 349 | if (boot_clock::now() > restart_time) { |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 350 | if (auto result = s->Start(); !result.ok()) { |
Tom Cherry | 702ca9a | 2017-08-25 10:36:52 -0700 | [diff] [blame] | 351 | LOG(ERROR) << "Could not restart process '" << s->name() << "': " << result.error(); |
| 352 | } |
Tom Cherry | d269e3a | 2017-07-31 13:23:18 -0700 | [diff] [blame] | 353 | } else { |
Tom Cherry | 73f535e | 2018-09-27 16:10:46 -0700 | [diff] [blame] | 354 | if (!next_process_action_time || restart_time < *next_process_action_time) { |
| 355 | next_process_action_time = restart_time; |
Tom Cherry | d269e3a | 2017-07-31 13:23:18 -0700 | [diff] [blame] | 356 | } |
| 357 | } |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 358 | } |
Tom Cherry | 73f535e | 2018-09-27 16:10:46 -0700 | [diff] [blame] | 359 | return next_process_action_time; |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 360 | } |
| 361 | |
Tom Cherry | 0188274 | 2020-03-10 09:08:02 -0700 | [diff] [blame] | 362 | static Result<void> DoControlStart(Service* service) { |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 363 | return service->Start(); |
| 364 | } |
| 365 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 366 | static Result<void> DoControlStop(Service* service) { |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 367 | service->Stop(); |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 368 | return {}; |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 369 | } |
| 370 | |
Tom Cherry | 0188274 | 2020-03-10 09:08:02 -0700 | [diff] [blame] | 371 | static Result<void> DoControlRestart(Service* service) { |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 372 | service->Restart(); |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 373 | return {}; |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | enum class ControlTarget { |
| 377 | SERVICE, // function gets called for the named service |
| 378 | INTERFACE, // action gets called for every service that holds this interface |
| 379 | }; |
| 380 | |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 381 | using ControlMessageFunction = std::function<Result<void>(Service*)>; |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 382 | |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 383 | static const std::map<std::string, ControlMessageFunction, std::less<>>& GetControlMessageMap() { |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 384 | // clang-format off |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 385 | static const std::map<std::string, ControlMessageFunction, std::less<>> control_message_functions = { |
| 386 | {"sigstop_on", [](auto* service) { service->set_sigstop(true); return Result<void>{}; }}, |
| 387 | {"sigstop_off", [](auto* service) { service->set_sigstop(false); return Result<void>{}; }}, |
| 388 | {"oneshot_on", [](auto* service) { service->set_oneshot(true); return Result<void>{}; }}, |
| 389 | {"oneshot_off", [](auto* service) { service->set_oneshot(false); return Result<void>{}; }}, |
| 390 | {"start", DoControlStart}, |
| 391 | {"stop", DoControlStop}, |
| 392 | {"restart", DoControlRestart}, |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 393 | }; |
| 394 | // clang-format on |
| 395 | |
| 396 | return control_message_functions; |
| 397 | } |
| 398 | |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 399 | static bool HandleControlMessage(std::string_view message, const std::string& name, |
| 400 | pid_t from_pid) { |
| 401 | std::string cmdline_path = StringPrintf("proc/%d/cmdline", from_pid); |
Tom Cherry | 6f2d56d | 2018-02-21 10:37:44 -0800 | [diff] [blame] | 402 | std::string process_cmdline; |
| 403 | if (ReadFileToString(cmdline_path, &process_cmdline)) { |
| 404 | std::replace(process_cmdline.begin(), process_cmdline.end(), '\0', ' '); |
| 405 | process_cmdline = Trim(process_cmdline); |
| 406 | } else { |
| 407 | process_cmdline = "unknown process"; |
| 408 | } |
| 409 | |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 410 | Service* service = nullptr; |
| 411 | auto action = message; |
| 412 | if (ConsumePrefix(&action, "interface_")) { |
| 413 | service = ServiceList::GetInstance().FindInterface(name); |
| 414 | } else { |
| 415 | service = ServiceList::GetInstance().FindService(name); |
Steven Moreland | 6227e34 | 2018-05-08 13:46:39 -0700 | [diff] [blame] | 416 | } |
| 417 | |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 418 | if (service == nullptr) { |
| 419 | LOG(ERROR) << "Control message: Could not find '" << name << "' for ctl." << message |
| 420 | << " from pid: " << from_pid << " (" << process_cmdline << ")"; |
Wei Wang | 5f01d3a | 2019-05-23 12:13:29 -0700 | [diff] [blame] | 421 | return false; |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 422 | } |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 423 | |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 424 | const auto& map = GetControlMessageMap(); |
| 425 | const auto it = map.find(action); |
| 426 | if (it == map.end()) { |
| 427 | LOG(ERROR) << "Unknown control msg '" << message << "'"; |
| 428 | return false; |
| 429 | } |
| 430 | const auto& function = it->second; |
| 431 | |
| 432 | if (auto result = function(service); !result.ok()) { |
| 433 | LOG(ERROR) << "Control message: Could not ctl." << message << " for '" << name |
| 434 | << "' from pid: " << from_pid << " (" << process_cmdline |
| 435 | << "): " << result.error(); |
Wei Wang | 5f01d3a | 2019-05-23 12:13:29 -0700 | [diff] [blame] | 436 | return false; |
Steven Moreland | e055d73 | 2017-10-05 18:50:22 -0700 | [diff] [blame] | 437 | } |
Steven Moreland | 9800ad8 | 2019-08-28 18:34:24 -0700 | [diff] [blame] | 438 | |
Tom Cherry | c297d60 | 2020-03-04 10:52:08 -0800 | [diff] [blame] | 439 | LOG(INFO) << "Control message: Processed ctl." << message << " for '" << name |
| 440 | << "' from pid: " << from_pid << " (" << process_cmdline << ")"; |
Wei Wang | 5f01d3a | 2019-05-23 12:13:29 -0700 | [diff] [blame] | 441 | return true; |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 442 | } |
| 443 | |
Tom Cherry | 0c19d6c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 444 | bool QueueControlMessage(const std::string& message, const std::string& name, pid_t pid, int fd) { |
| 445 | auto lock = std::lock_guard{pending_control_messages_lock}; |
| 446 | if (pending_control_messages.size() > 100) { |
| 447 | LOG(ERROR) << "Too many pending control messages, dropped '" << message << "' for '" << name |
| 448 | << "' from pid: " << pid; |
| 449 | return false; |
| 450 | } |
| 451 | pending_control_messages.push({message, name, pid, fd}); |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 452 | WakeMainInitThread(); |
Tom Cherry | 0c19d6c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 453 | return true; |
| 454 | } |
| 455 | |
| 456 | static void HandleControlMessages() { |
| 457 | auto lock = std::unique_lock{pending_control_messages_lock}; |
| 458 | // Init historically would only execute handle one property message, including control messages |
| 459 | // in each iteration of its main loop. We retain this behavior here to prevent starvation of |
| 460 | // other actions in the main loop. |
| 461 | if (!pending_control_messages.empty()) { |
| 462 | auto control_message = pending_control_messages.front(); |
| 463 | pending_control_messages.pop(); |
| 464 | lock.unlock(); |
| 465 | |
| 466 | bool success = HandleControlMessage(control_message.message, control_message.name, |
| 467 | control_message.pid); |
| 468 | |
| 469 | uint32_t response = success ? PROP_SUCCESS : PROP_ERROR_HANDLE_CONTROL_MESSAGE; |
| 470 | if (control_message.fd != -1) { |
| 471 | TEMP_FAILURE_RETRY(send(control_message.fd, &response, sizeof(response), 0)); |
| 472 | close(control_message.fd); |
| 473 | } |
| 474 | lock.lock(); |
| 475 | } |
| 476 | // If we still have items to process, make sure we wake back up to do so. |
| 477 | if (!pending_control_messages.empty()) { |
Tom Cherry | 9c83185 | 2020-03-26 20:32:17 -0700 | [diff] [blame] | 478 | WakeMainInitThread(); |
Tom Cherry | 0c19d6c | 2020-03-12 14:29:25 -0700 | [diff] [blame] | 479 | } |
| 480 | } |
| 481 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 482 | static Result<void> wait_for_coldboot_done_action(const BuiltinArguments& args) { |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 483 | if (!prop_waiter_state.StartWaiting(kColdBootDoneProp, "true")) { |
Tom Cherry | 39fafed | 2019-06-10 17:49:59 -0700 | [diff] [blame] | 484 | LOG(FATAL) << "Could not wait for '" << kColdBootDoneProp << "'"; |
Elliott Hughes | c6c26ed | 2015-04-24 18:50:30 -0700 | [diff] [blame] | 485 | } |
| 486 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 487 | return {}; |
Colin Cross | ebc6ff1 | 2010-04-13 19:52:01 -0700 | [diff] [blame] | 488 | } |
| 489 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 490 | static Result<void> SetupCgroupsAction(const BuiltinArguments&) { |
Suren Baghdasaryan | 192aee7 | 2018-12-21 11:41:50 -0800 | [diff] [blame] | 491 | // Have to create <CGROUPS_RC_DIR> using make_dir function |
| 492 | // for appropriate sepolicy to be set for it |
Suren Baghdasaryan | 5b53573 | 2019-03-26 20:34:32 +0000 | [diff] [blame] | 493 | make_dir(android::base::Dirname(CGROUPS_RC_PATH), 0711); |
Yifan Hong | eecba5c | 2019-04-02 15:10:40 -0700 | [diff] [blame] | 494 | if (!CgroupSetup()) { |
Suren Baghdasaryan | 192aee7 | 2018-12-21 11:41:50 -0800 | [diff] [blame] | 495 | return ErrnoError() << "Failed to setup cgroups"; |
| 496 | } |
| 497 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 498 | return {}; |
Suren Baghdasaryan | 192aee7 | 2018-12-21 11:41:50 -0800 | [diff] [blame] | 499 | } |
| 500 | |
Sami Tolvanen | 9e9efca | 2015-12-07 12:33:58 +0000 | [diff] [blame] | 501 | static void export_oem_lock_status() { |
Tom Cherry | ccf2353 | 2017-03-28 16:40:41 -0700 | [diff] [blame] | 502 | if (!android::base::GetBoolProperty("ro.oem_unlock_supported", false)) { |
Sami Tolvanen | 9e9efca | 2015-12-07 12:33:58 +0000 | [diff] [blame] | 503 | return; |
| 504 | } |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 505 | ImportKernelCmdline([](const std::string& key, const std::string& value) { |
| 506 | if (key == "androidboot.verifiedbootstate") { |
| 507 | SetProperty("ro.boot.flash.locked", value == "orange" ? "0" : "1"); |
Elliott Hughes | e5ce30f | 2015-05-06 19:19:24 -0700 | [diff] [blame] | 508 | } |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 509 | }); |
Colin Cross | ebc6ff1 | 2010-04-13 19:52:01 -0700 | [diff] [blame] | 510 | } |
| 511 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 512 | static Result<void> property_enable_triggers_action(const BuiltinArguments& args) { |
caozhiyuan | b104c50 | 2016-11-26 21:14:07 +0800 | [diff] [blame] | 513 | /* Enable property triggers. */ |
| 514 | property_triggers_enabled = 1; |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 515 | return {}; |
caozhiyuan | b104c50 | 2016-11-26 21:14:07 +0800 | [diff] [blame] | 516 | } |
| 517 | |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 518 | static Result<void> queue_property_triggers_action(const BuiltinArguments& args) { |
caozhiyuan | b104c50 | 2016-11-26 21:14:07 +0800 | [diff] [blame] | 519 | ActionManager::GetInstance().QueueBuiltinAction(property_enable_triggers_action, "enable_property_trigger"); |
Tom Cherry | 26ed9cb | 2017-04-17 13:25:29 -0700 | [diff] [blame] | 520 | ActionManager::GetInstance().QueueAllPropertyActions(); |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 521 | return {}; |
Martijn Coenen | 62e985a | 2018-09-04 06:29:14 +0200 | [diff] [blame] | 522 | } |
| 523 | |
Amit Pundir | d2e74db | 2016-06-29 19:00:00 +0530 | [diff] [blame] | 524 | // Set the UDC controller for the ConfigFS USB Gadgets. |
| 525 | // Read the UDC controller in use from "/sys/class/udc". |
| 526 | // In case of multiple UDC controllers select the first one. |
Mark Salyzyn | 6fca594 | 2020-05-12 18:13:14 -0700 | [diff] [blame] | 527 | static void SetUsbController() { |
| 528 | static auto controller_set = false; |
| 529 | if (controller_set) return; |
Amit Pundir | d2e74db | 2016-06-29 19:00:00 +0530 | [diff] [blame] | 530 | std::unique_ptr<DIR, decltype(&closedir)>dir(opendir("/sys/class/udc"), closedir); |
| 531 | if (!dir) return; |
| 532 | |
| 533 | dirent* dp; |
| 534 | while ((dp = readdir(dir.get())) != nullptr) { |
| 535 | if (dp->d_name[0] == '.') continue; |
| 536 | |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 537 | SetProperty("sys.usb.controller", dp->d_name); |
Mark Salyzyn | 6fca594 | 2020-05-12 18:13:14 -0700 | [diff] [blame] | 538 | controller_set = true; |
Amit Pundir | d2e74db | 2016-06-29 19:00:00 +0530 | [diff] [blame] | 539 | break; |
| 540 | } |
| 541 | } |
| 542 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 543 | static void HandleSigtermSignal(const signalfd_siginfo& siginfo) { |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 544 | if (siginfo.ssi_pid != 0) { |
| 545 | // Drop any userspace SIGTERM requests. |
| 546 | LOG(DEBUG) << "Ignoring SIGTERM from pid " << siginfo.ssi_pid; |
| 547 | return; |
| 548 | } |
| 549 | |
Mark Salyzyn | 161b862 | 2017-09-26 08:26:12 -0700 | [diff] [blame] | 550 | HandlePowerctlMessage("shutdown,container"); |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 551 | } |
| 552 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 553 | static void HandleSignalFd() { |
| 554 | signalfd_siginfo siginfo; |
| 555 | ssize_t bytes_read = TEMP_FAILURE_RETRY(read(signal_fd, &siginfo, sizeof(siginfo))); |
| 556 | if (bytes_read != sizeof(siginfo)) { |
| 557 | PLOG(ERROR) << "Failed to read siginfo from signal_fd"; |
| 558 | return; |
| 559 | } |
yusukes | 4a4ec14e | 2018-02-01 17:14:30 -0800 | [diff] [blame] | 560 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 561 | switch (siginfo.ssi_signo) { |
| 562 | case SIGCHLD: |
| 563 | ReapAnyOutstandingChildren(); |
| 564 | break; |
| 565 | case SIGTERM: |
| 566 | HandleSigtermSignal(siginfo); |
| 567 | break; |
| 568 | default: |
| 569 | PLOG(ERROR) << "signal_fd: received unexpected signal " << siginfo.ssi_signo; |
| 570 | break; |
yusukes | 4a4ec14e | 2018-02-01 17:14:30 -0800 | [diff] [blame] | 571 | } |
| 572 | } |
| 573 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 574 | static void UnblockSignals() { |
| 575 | const struct sigaction act { .sa_handler = SIG_DFL }; |
| 576 | sigaction(SIGCHLD, &act, nullptr); |
| 577 | |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 578 | sigset_t mask; |
| 579 | sigemptyset(&mask); |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 580 | sigaddset(&mask, SIGCHLD); |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 581 | sigaddset(&mask, SIGTERM); |
| 582 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 583 | if (sigprocmask(SIG_UNBLOCK, &mask, nullptr) == -1) { |
| 584 | PLOG(FATAL) << "failed to unblock signals for PID " << getpid(); |
| 585 | } |
| 586 | } |
| 587 | |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 588 | static void InstallSignalFdHandler(Epoll* epoll) { |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 589 | // Applying SA_NOCLDSTOP to a defaulted SIGCHLD handler prevents the signalfd from receiving |
| 590 | // SIGCHLD when a child process stops or continues (b/77867680#comment9). |
| 591 | const struct sigaction act { .sa_handler = SIG_DFL, .sa_flags = SA_NOCLDSTOP }; |
| 592 | sigaction(SIGCHLD, &act, nullptr); |
| 593 | |
| 594 | sigset_t mask; |
| 595 | sigemptyset(&mask); |
| 596 | sigaddset(&mask, SIGCHLD); |
| 597 | |
| 598 | if (!IsRebootCapable()) { |
| 599 | // If init does not have the CAP_SYS_BOOT capability, it is running in a container. |
| 600 | // In that case, receiving SIGTERM will cause the system to shut down. |
| 601 | sigaddset(&mask, SIGTERM); |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 602 | } |
| 603 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 604 | if (sigprocmask(SIG_BLOCK, &mask, nullptr) == -1) { |
| 605 | PLOG(FATAL) << "failed to block signals"; |
| 606 | } |
| 607 | |
| 608 | // Register a handler to unblock signals in the child processes. |
| 609 | const int result = pthread_atfork(nullptr, nullptr, &UnblockSignals); |
yusukes | 4a4ec14e | 2018-02-01 17:14:30 -0800 | [diff] [blame] | 610 | if (result != 0) { |
| 611 | LOG(FATAL) << "Failed to register a fork handler: " << strerror(result); |
| 612 | } |
| 613 | |
Ryan Prichard | 1325ec8 | 2018-04-11 18:46:38 -0700 | [diff] [blame] | 614 | signal_fd = signalfd(-1, &mask, SFD_CLOEXEC); |
| 615 | if (signal_fd == -1) { |
| 616 | PLOG(FATAL) << "failed to create signalfd"; |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 617 | } |
| 618 | |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 619 | if (auto result = epoll->RegisterHandler(signal_fd, HandleSignalFd); !result.ok()) { |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 620 | LOG(FATAL) << result.error(); |
| 621 | } |
Luis Hector Chavez | 9f97f47 | 2017-09-06 13:43:57 -0700 | [diff] [blame] | 622 | } |
| 623 | |
Mark Salyzyn | 1385725 | 2018-05-18 15:25:15 -0700 | [diff] [blame] | 624 | void HandleKeychord(const std::vector<int>& keycodes) { |
Mark Salyzyn | eca2507 | 2018-05-16 15:10:24 -0700 | [diff] [blame] | 625 | // Only handle keychords if adb is enabled. |
| 626 | std::string adb_enabled = android::base::GetProperty("init.svc.adbd", ""); |
Mark Salyzyn | 1385725 | 2018-05-18 15:25:15 -0700 | [diff] [blame] | 627 | if (adb_enabled != "running") { |
| 628 | LOG(WARNING) << "Not starting service for keychord " << android::base::Join(keycodes, ' ') |
| 629 | << " because ADB is disabled"; |
| 630 | return; |
| 631 | } |
| 632 | |
| 633 | auto found = false; |
| 634 | for (const auto& service : ServiceList::GetInstance()) { |
| 635 | auto svc = service.get(); |
| 636 | if (svc->keycodes() == keycodes) { |
| 637 | found = true; |
| 638 | LOG(INFO) << "Starting service '" << svc->name() << "' from keychord " |
| 639 | << android::base::Join(keycodes, ' '); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 640 | if (auto result = svc->Start(); !result.ok()) { |
Mark Salyzyn | 1385725 | 2018-05-18 15:25:15 -0700 | [diff] [blame] | 641 | LOG(ERROR) << "Could not start service '" << svc->name() << "' from keychord " |
| 642 | << android::base::Join(keycodes, ' ') << ": " << result.error(); |
Mark Salyzyn | eca2507 | 2018-05-16 15:10:24 -0700 | [diff] [blame] | 643 | } |
Mark Salyzyn | eca2507 | 2018-05-16 15:10:24 -0700 | [diff] [blame] | 644 | } |
Mark Salyzyn | 1385725 | 2018-05-18 15:25:15 -0700 | [diff] [blame] | 645 | } |
| 646 | if (!found) { |
| 647 | LOG(ERROR) << "Service for keychord " << android::base::Join(keycodes, ' ') << " not found"; |
Mark Salyzyn | eca2507 | 2018-05-16 15:10:24 -0700 | [diff] [blame] | 648 | } |
Tom Cherry | 663fdfc | 2017-03-10 14:46:38 -0800 | [diff] [blame] | 649 | } |
| 650 | |
Bowgo Tsai | 630fcdf | 2019-04-11 23:57:24 +0800 | [diff] [blame] | 651 | static void UmountDebugRamdisk() { |
| 652 | if (umount("/debug_ramdisk") != 0) { |
Kiyoung Kim | 99df54b | 2019-11-22 16:14:10 +0900 | [diff] [blame] | 653 | PLOG(ERROR) << "Failed to umount /debug_ramdisk"; |
Bowgo Tsai | 630fcdf | 2019-04-11 23:57:24 +0800 | [diff] [blame] | 654 | } |
| 655 | } |
| 656 | |
Kiyoung Kim | 99df54b | 2019-11-22 16:14:10 +0900 | [diff] [blame] | 657 | static void MountExtraFilesystems() { |
| 658 | #define CHECKCALL(x) \ |
| 659 | if ((x) != 0) PLOG(FATAL) << #x " failed."; |
| 660 | |
| 661 | // /apex is used to mount APEXes |
| 662 | CHECKCALL(mount("tmpfs", "/apex", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_NODEV, |
| 663 | "mode=0755,uid=0,gid=0")); |
| 664 | |
| 665 | // /linkerconfig is used to keep generated linker configuration |
| 666 | CHECKCALL(mount("tmpfs", "/linkerconfig", "tmpfs", MS_NOEXEC | MS_NOSUID | MS_NODEV, |
| 667 | "mode=0755,uid=0,gid=0")); |
| 668 | #undef CHECKCALL |
| 669 | } |
| 670 | |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 671 | static void RecordStageBoottimes(const boot_clock::time_point& second_stage_start_time) { |
| 672 | int64_t first_stage_start_time_ns = -1; |
Mark Salyzyn | 44505ec | 2019-05-08 12:44:50 -0700 | [diff] [blame] | 673 | if (auto first_stage_start_time_str = getenv(kEnvFirstStageStartedAt); |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 674 | first_stage_start_time_str) { |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 675 | SetProperty("ro.boottime.init", first_stage_start_time_str); |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 676 | android::base::ParseInt(first_stage_start_time_str, &first_stage_start_time_ns); |
| 677 | } |
Mark Salyzyn | 44505ec | 2019-05-08 12:44:50 -0700 | [diff] [blame] | 678 | unsetenv(kEnvFirstStageStartedAt); |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 679 | |
| 680 | int64_t selinux_start_time_ns = -1; |
Mark Salyzyn | 44505ec | 2019-05-08 12:44:50 -0700 | [diff] [blame] | 681 | if (auto selinux_start_time_str = getenv(kEnvSelinuxStartedAt); selinux_start_time_str) { |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 682 | android::base::ParseInt(selinux_start_time_str, &selinux_start_time_ns); |
| 683 | } |
Mark Salyzyn | 44505ec | 2019-05-08 12:44:50 -0700 | [diff] [blame] | 684 | unsetenv(kEnvSelinuxStartedAt); |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 685 | |
| 686 | if (selinux_start_time_ns == -1) return; |
| 687 | if (first_stage_start_time_ns == -1) return; |
| 688 | |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 689 | SetProperty("ro.boottime.init.first_stage", |
| 690 | std::to_string(selinux_start_time_ns - first_stage_start_time_ns)); |
| 691 | SetProperty("ro.boottime.init.selinux", |
| 692 | std::to_string(second_stage_start_time.time_since_epoch().count() - |
| 693 | selinux_start_time_ns)); |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 694 | } |
| 695 | |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 696 | void SendLoadPersistentPropertiesMessage() { |
| 697 | auto init_message = InitMessage{}; |
| 698 | init_message.set_load_persistent_properties(true); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 699 | if (auto result = SendMessage(property_fd, init_message); !result.ok()) { |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 700 | LOG(ERROR) << "Failed to send load persistent properties message: " << result.error(); |
| 701 | } |
| 702 | } |
| 703 | |
Tom Cherry | 7bfea3d | 2018-11-06 14:12:05 -0800 | [diff] [blame] | 704 | int SecondStageMain(int argc, char** argv) { |
Tom Cherry | 663fdfc | 2017-03-10 14:46:38 -0800 | [diff] [blame] | 705 | if (REBOOT_BOOTLOADER_ON_PANIC) { |
Tom Cherry | 1ca8324 | 2017-08-25 15:10:48 -0700 | [diff] [blame] | 706 | InstallRebootSignalHandlers(); |
Tom Cherry | 663fdfc | 2017-03-10 14:46:38 -0800 | [diff] [blame] | 707 | } |
| 708 | |
Mark Salyzyn | 10377df | 2019-03-27 08:10:41 -0700 | [diff] [blame] | 709 | boot_clock::time_point start_time = boot_clock::now(); |
| 710 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 711 | trigger_shutdown = [](const std::string& command) { shutdown_state.TriggerShutdown(command); }; |
Tom Cherry | 18278d2 | 2019-11-12 16:21:20 -0800 | [diff] [blame] | 712 | |
Tom Cherry | 1fcd512 | 2019-05-28 10:19:44 -0700 | [diff] [blame] | 713 | SetStdioToDevNull(argv); |
| 714 | InitKernelLogging(argv); |
Tom Cherry | 34e7041 | 2017-03-16 18:08:56 -0700 | [diff] [blame] | 715 | LOG(INFO) << "init second stage started!"; |
| 716 | |
Tom Cherry | 2bf886a | 2020-03-16 10:17:05 -0700 | [diff] [blame] | 717 | // Init should not crash because of a dependence on any other process, therefore we ignore |
| 718 | // SIGPIPE and handle EPIPE at the call site directly. Note that setting a signal to SIG_IGN |
| 719 | // is inherited across exec, but custom signal handlers are not. Since we do not want to |
| 720 | // ignore SIGPIPE for child processes, we set a no-op function for the signal handler instead. |
| 721 | { |
| 722 | struct sigaction action = {.sa_flags = SA_RESTART}; |
| 723 | action.sa_handler = [](int) {}; |
| 724 | sigaction(SIGPIPE, &action, nullptr); |
| 725 | } |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 726 | |
David Ng | 90fd7bc | 2019-06-24 17:50:11 -0700 | [diff] [blame] | 727 | if (DeferOverlayfsMount()) { |
| 728 | Fstab fstab; |
| 729 | if (ReadDefaultFstab(&fstab)) { |
| 730 | fstab.erase(std::remove_if(fstab.begin(), fstab.end(), |
| 731 | [](const auto& entry) { |
| 732 | return !entry.fs_mgr_flags.first_stage_mount; |
| 733 | }), |
| 734 | fstab.end()); |
| 735 | LOG(INFO) << "Running deferred mounting of overlayfs"; |
| 736 | fs_mgr_overlayfs_mount_all(&fstab); |
| 737 | } |
| 738 | |
| 739 | } |
| 740 | |
Wei Wang | bb2bc15 | 2019-04-18 14:56:24 -0700 | [diff] [blame] | 741 | // Set init and its forked children's oom_adj. |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 742 | if (auto result = |
| 743 | WriteFile("/proc/1/oom_score_adj", StringPrintf("%d", DEFAULT_OOM_SCORE_ADJUST)); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 744 | !result.ok()) { |
Suren Baghdasaryan | c29c2ba | 2019-10-22 17:18:42 -0700 | [diff] [blame] | 745 | LOG(ERROR) << "Unable to write " << DEFAULT_OOM_SCORE_ADJUST |
| 746 | << " to /proc/1/oom_score_adj: " << result.error(); |
Wei Wang | bb2bc15 | 2019-04-18 14:56:24 -0700 | [diff] [blame] | 747 | } |
| 748 | |
Mark Salyzyn | 4599627 | 2017-05-02 14:44:39 -0700 | [diff] [blame] | 749 | // Set up a session keyring that all processes will have access to. It |
| 750 | // will hold things like FBE encryption keys. No process should override |
| 751 | // its session keyring. |
Elliott Hughes | f8627ce | 2017-05-09 17:09:06 -0700 | [diff] [blame] | 752 | keyctl_get_keyring_ID(KEY_SPEC_SESSION_KEYRING, 1); |
Mark Salyzyn | 4599627 | 2017-05-02 14:44:39 -0700 | [diff] [blame] | 753 | |
Tom Cherry | 34e7041 | 2017-03-16 18:08:56 -0700 | [diff] [blame] | 754 | // Indicate that booting is in progress to background fw loaders, etc. |
| 755 | close(open("/dev/.booting", O_WRONLY | O_CREAT | O_CLOEXEC, 0000)); |
| 756 | |
Bowgo Tsai | 1dacd42 | 2019-03-04 17:53:34 +0800 | [diff] [blame] | 757 | // See if need to load debug props to allow adb root, when the device is unlocked. |
| 758 | const char* force_debuggable_env = getenv("INIT_FORCE_DEBUGGABLE"); |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 759 | bool load_debug_prop = false; |
Bowgo Tsai | 1dacd42 | 2019-03-04 17:53:34 +0800 | [diff] [blame] | 760 | if (force_debuggable_env && AvbHandle::IsDeviceUnlocked()) { |
| 761 | load_debug_prop = "true"s == force_debuggable_env; |
| 762 | } |
| 763 | |
Bowgo Tsai | 1dacd42 | 2019-03-04 17:53:34 +0800 | [diff] [blame] | 764 | unsetenv("INIT_FORCE_DEBUGGABLE"); |
Tom Cherry | 34e7041 | 2017-03-16 18:08:56 -0700 | [diff] [blame] | 765 | |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 766 | // Umount the debug ramdisk so property service doesn't read .prop files from there, when it |
| 767 | // is not meant to. |
| 768 | if (!load_debug_prop) { |
| 769 | UmountDebugRamdisk(); |
| 770 | } |
| 771 | |
| 772 | PropertyInit(); |
| 773 | |
| 774 | // Umount the debug ramdisk after property service has read the .prop files when it means to. |
| 775 | if (load_debug_prop) { |
| 776 | UmountDebugRamdisk(); |
| 777 | } |
| 778 | |
Kiyoung Kim | 99df54b | 2019-11-22 16:14:10 +0900 | [diff] [blame] | 779 | // Mount extra filesystems required during second stage init |
| 780 | MountExtraFilesystems(); |
| 781 | |
Tom Cherry | 34e7041 | 2017-03-16 18:08:56 -0700 | [diff] [blame] | 782 | // Now set up SELinux for second stage. |
Tom Cherry | 0c8d6d2 | 2017-08-10 12:22:44 -0700 | [diff] [blame] | 783 | SelinuxSetupKernelLogging(); |
| 784 | SelabelInitialize(); |
| 785 | SelinuxRestoreContext(); |
Stephen Smalley | e46f9d5 | 2012-01-13 08:48:47 -0500 | [diff] [blame] | 786 | |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 787 | Epoll epoll; |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 788 | if (auto result = epoll.Open(); !result.ok()) { |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 789 | PLOG(FATAL) << result.error(); |
Elliott Hughes | 929f407 | 2015-04-24 21:13:44 -0700 | [diff] [blame] | 790 | } |
| 791 | |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 792 | InstallSignalFdHandler(&epoll); |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 793 | InstallInitNotifier(&epoll); |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 794 | StartPropertyService(&property_fd); |
Tom Cherry | 1ab3dfc | 2019-04-22 17:46:37 -0700 | [diff] [blame] | 795 | |
Tom Cherry | c88d8f9 | 2019-08-19 15:21:25 -0700 | [diff] [blame] | 796 | // Make the time that init stages started available for bootstat to log. |
| 797 | RecordStageBoottimes(start_time); |
| 798 | |
| 799 | // Set libavb version for Framework-only OTA match in Treble build. |
| 800 | if (const char* avb_version = getenv("INIT_AVB_VERSION"); avb_version != nullptr) { |
| 801 | SetProperty("ro.boot.avb_version", avb_version); |
| 802 | } |
| 803 | unsetenv("INIT_AVB_VERSION"); |
| 804 | |
| 805 | fs_mgr_vendor_overlay_mount_all(); |
| 806 | export_oem_lock_status(); |
Mark Salyzyn | a73ed22 | 2019-03-13 10:18:24 -0700 | [diff] [blame] | 807 | MountHandler mount_handler(&epoll); |
Mark Salyzyn | 6fca594 | 2020-05-12 18:13:14 -0700 | [diff] [blame] | 808 | SetUsbController(); |
Dima Zavin | d7634c9 | 2011-12-16 14:18:06 -0800 | [diff] [blame] | 809 | |
Tom Cherry | d52a5b3 | 2019-07-22 16:05:36 -0700 | [diff] [blame] | 810 | const BuiltinFunctionMap& function_map = GetBuiltinFunctionMap(); |
Tom Cherry | b734990 | 2015-08-26 11:43:36 -0700 | [diff] [blame] | 811 | Action::set_function_map(&function_map); |
| 812 | |
Jiyong Park | 6866041 | 2019-01-16 23:00:59 +0900 | [diff] [blame] | 813 | if (!SetupMountNamespaces()) { |
| 814 | PLOG(FATAL) << "SetupMountNamespaces failed"; |
| 815 | } |
| 816 | |
Tom Cherry | e70c28b | 2020-04-28 13:55:19 -0700 | [diff] [blame] | 817 | InitializeSubcontext(); |
Tom Cherry | cb0f9bb | 2017-09-12 15:58:47 -0700 | [diff] [blame] | 818 | |
Tom Cherry | 30a6f27 | 2017-04-19 15:31:58 -0700 | [diff] [blame] | 819 | ActionManager& am = ActionManager::GetInstance(); |
Tom Cherry | 911b9b1 | 2017-07-27 16:20:58 -0700 | [diff] [blame] | 820 | ServiceList& sm = ServiceList::GetInstance(); |
Tom Cherry | 30a6f27 | 2017-04-19 15:31:58 -0700 | [diff] [blame] | 821 | |
Tom Cherry | 67dee62 | 2017-07-27 12:54:48 -0700 | [diff] [blame] | 822 | LoadBootScripts(am, sm); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 823 | |
Tom Cherry | d8a7257 | 2017-03-13 12:24:49 -0700 | [diff] [blame] | 824 | // Turning this on and letting the INFO logging be discarded adds 0.2s to |
| 825 | // Nexus 9 boot time, so it's disabled by default. |
Tom Cherry | 30a6f27 | 2017-04-19 15:31:58 -0700 | [diff] [blame] | 826 | if (false) DumpState(); |
Tom Cherry | fa0c21c | 2015-07-23 17:53:11 -0700 | [diff] [blame] | 827 | |
David Anderson | 372278c | 2019-02-14 12:46:13 -0800 | [diff] [blame] | 828 | // Make the GSI status available before scripts start running. |
Howard Chen | 026adf0 | 2020-02-25 16:31:10 +0800 | [diff] [blame] | 829 | auto is_running = android::gsi::IsGsiRunning() ? "1" : "0"; |
| 830 | SetProperty(gsi::kGsiBootedProp, is_running); |
| 831 | auto is_installed = android::gsi::IsGsiInstalled() ? "1" : "0"; |
| 832 | SetProperty(gsi::kGsiInstalledProp, is_installed); |
David Anderson | 372278c | 2019-02-14 12:46:13 -0800 | [diff] [blame] | 833 | |
Suren Baghdasaryan | 192aee7 | 2018-12-21 11:41:50 -0800 | [diff] [blame] | 834 | am.QueueBuiltinAction(SetupCgroupsAction, "SetupCgroups"); |
Ravi Kumar Siddojigari | 33783fc | 2019-07-30 16:41:20 +0530 | [diff] [blame] | 835 | am.QueueBuiltinAction(SetKptrRestrictAction, "SetKptrRestrict"); |
Ryan Savitski | f0f7e70 | 2020-01-14 22:02:53 +0000 | [diff] [blame] | 836 | am.QueueBuiltinAction(TestPerfEventSelinuxAction, "TestPerfEventSelinux"); |
Tom Cherry | fa0c21c | 2015-07-23 17:53:11 -0700 | [diff] [blame] | 837 | am.QueueEventTrigger("early-init"); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 838 | |
Elliott Hughes | c6c26ed | 2015-04-24 18:50:30 -0700 | [diff] [blame] | 839 | // Queue an action that waits for coldboot done so we know ueventd has set up all of /dev... |
Tom Cherry | fa0c21c | 2015-07-23 17:53:11 -0700 | [diff] [blame] | 840 | am.QueueBuiltinAction(wait_for_coldboot_done_action, "wait_for_coldboot_done"); |
Elliott Hughes | c6c26ed | 2015-04-24 18:50:30 -0700 | [diff] [blame] | 841 | // ... so that we can start queuing up actions that require stuff from /dev. |
Tom Cherry | 0c8d6d2 | 2017-08-10 12:22:44 -0700 | [diff] [blame] | 842 | am.QueueBuiltinAction(MixHwrngIntoLinuxRngAction, "MixHwrngIntoLinuxRng"); |
| 843 | am.QueueBuiltinAction(SetMmapRndBitsAction, "SetMmapRndBits"); |
Mark Salyzyn | 06aeb41 | 2018-05-18 15:25:15 -0700 | [diff] [blame] | 844 | Keychords keychords; |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 845 | am.QueueBuiltinAction( |
Tom Cherry | bbcbc2f | 2019-06-10 11:08:01 -0700 | [diff] [blame] | 846 | [&epoll, &keychords](const BuiltinArguments& args) -> Result<void> { |
| 847 | for (const auto& svc : ServiceList::GetInstance()) { |
| 848 | keychords.Register(svc->keycodes()); |
| 849 | } |
| 850 | keychords.Start(&epoll, HandleKeychord); |
| 851 | return {}; |
| 852 | }, |
| 853 | "KeychordInit"); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 854 | |
Elliott Hughes | da40c00 | 2015-03-27 23:20:44 -0700 | [diff] [blame] | 855 | // Trigger all the boot actions to get us started. |
Tom Cherry | fa0c21c | 2015-07-23 17:53:11 -0700 | [diff] [blame] | 856 | am.QueueEventTrigger("init"); |
Dima Zavin | ca47cef | 2011-08-24 15:28:23 -0700 | [diff] [blame] | 857 | |
Elliott Hughes | 8d82ea0 | 2015-02-06 20:15:18 -0800 | [diff] [blame] | 858 | // Repeat mix_hwrng_into_linux_rng in case /dev/hw_random or /dev/random |
| 859 | // wasn't ready immediately after wait_for_coldboot_done |
Tom Cherry | 0c8d6d2 | 2017-08-10 12:22:44 -0700 | [diff] [blame] | 860 | am.QueueBuiltinAction(MixHwrngIntoLinuxRngAction, "MixHwrngIntoLinuxRng"); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 861 | |
Elliott Hughes | 8d82ea0 | 2015-02-06 20:15:18 -0800 | [diff] [blame] | 862 | // Don't mount filesystems or start core system services in charger mode. |
Tom Cherry | ccf2353 | 2017-03-28 16:40:41 -0700 | [diff] [blame] | 863 | std::string bootmode = GetProperty("ro.bootmode", ""); |
Yabin Cui | 74edcea | 2015-07-24 10:11:05 -0700 | [diff] [blame] | 864 | if (bootmode == "charger") { |
Tom Cherry | fa0c21c | 2015-07-23 17:53:11 -0700 | [diff] [blame] | 865 | am.QueueEventTrigger("charger"); |
Dima Zavin | ca47cef | 2011-08-24 15:28:23 -0700 | [diff] [blame] | 866 | } else { |
Tom Cherry | fa0c21c | 2015-07-23 17:53:11 -0700 | [diff] [blame] | 867 | am.QueueEventTrigger("late-init"); |
Dima Zavin | ca47cef | 2011-08-24 15:28:23 -0700 | [diff] [blame] | 868 | } |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 869 | |
Elliott Hughes | 8d82ea0 | 2015-02-06 20:15:18 -0800 | [diff] [blame] | 870 | // Run all property triggers based on current state of the properties. |
Tom Cherry | fa0c21c | 2015-07-23 17:53:11 -0700 | [diff] [blame] | 871 | am.QueueBuiltinAction(queue_property_triggers_action, "queue_property_triggers"); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 872 | |
Elliott Hughes | c6c26ed | 2015-04-24 18:50:30 -0700 | [diff] [blame] | 873 | while (true) { |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 874 | // By default, sleep until something happens. |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 875 | auto epoll_timeout = std::optional<std::chrono::milliseconds>{}; |
Elliott Hughes | 9605a94 | 2016-11-10 17:43:47 -0800 | [diff] [blame] | 876 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 877 | auto shutdown_command = shutdown_state.CheckShutdown(); |
| 878 | if (shutdown_command) { |
| 879 | HandlePowerctlMessage(*shutdown_command); |
Tom Cherry | 3633a40 | 2017-09-13 14:39:45 -0700 | [diff] [blame] | 880 | } |
| 881 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 882 | if (!(prop_waiter_state.MightBeWaiting() || Service::is_exec_service_running())) { |
Tom Cherry | 77ddcd5 | 2017-03-23 16:54:38 -0700 | [diff] [blame] | 883 | am.ExecuteOneCommand(); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 884 | } |
Tom Cherry | 44d5ec3 | 2020-01-31 08:33:36 -0800 | [diff] [blame] | 885 | if (!IsShuttingDown()) { |
| 886 | auto next_process_action_time = HandleProcessActions(); |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 887 | |
Tom Cherry | 44d5ec3 | 2020-01-31 08:33:36 -0800 | [diff] [blame] | 888 | // If there's a process that needs restarting, wake up in time for that. |
| 889 | if (next_process_action_time) { |
| 890 | epoll_timeout = std::chrono::ceil<std::chrono::milliseconds>( |
| 891 | *next_process_action_time - boot_clock::now()); |
| 892 | if (*epoll_timeout < 0ms) epoll_timeout = 0ms; |
Tom Cherry | 77ddcd5 | 2017-03-23 16:54:38 -0700 | [diff] [blame] | 893 | } |
Tom Cherry | 44d5ec3 | 2020-01-31 08:33:36 -0800 | [diff] [blame] | 894 | } |
Tom Cherry | 77ddcd5 | 2017-03-23 16:54:38 -0700 | [diff] [blame] | 895 | |
Tom Cherry | d2dab83 | 2020-01-29 14:09:24 -0800 | [diff] [blame] | 896 | if (!(prop_waiter_state.MightBeWaiting() || Service::is_exec_service_running())) { |
Tom Cherry | 77ddcd5 | 2017-03-23 16:54:38 -0700 | [diff] [blame] | 897 | // If there's more work to do, wake up again immediately. |
Mark Salyzyn | 6c6ec72 | 2015-10-24 16:20:18 -0700 | [diff] [blame] | 898 | if (am.HasMoreCommands()) epoll_timeout = 0ms; |
Tom Cherry | 77ddcd5 | 2017-03-23 16:54:38 -0700 | [diff] [blame] | 899 | } |
Wei Wang | 16db434 | 2016-11-30 15:43:42 -0800 | [diff] [blame] | 900 | |
Tom Cherry | 905a5df | 2019-08-30 14:12:56 -0700 | [diff] [blame] | 901 | auto pending_functions = epoll.Wait(epoll_timeout); |
Bernie Innocenti | cecebbb | 2020-02-06 03:49:33 +0900 | [diff] [blame] | 902 | if (!pending_functions.ok()) { |
Tom Cherry | 905a5df | 2019-08-30 14:12:56 -0700 | [diff] [blame] | 903 | LOG(ERROR) << pending_functions.error(); |
| 904 | } else if (!pending_functions->empty()) { |
| 905 | // We always reap children before responding to the other pending functions. This is to |
| 906 | // prevent a race where other daemons see that a service has exited and ask init to |
| 907 | // start it again via ctl.start before init has reaped it. |
| 908 | ReapAnyOutstandingChildren(); |
| 909 | for (const auto& function : *pending_functions) { |
| 910 | (*function)(); |
| 911 | } |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 912 | } |
Tom Cherry | 495a394 | 2020-03-27 14:08:20 -0700 | [diff] [blame] | 913 | if (!IsShuttingDown()) { |
| 914 | HandleControlMessages(); |
Mark Salyzyn | 6fca594 | 2020-05-12 18:13:14 -0700 | [diff] [blame] | 915 | SetUsbController(); |
Tom Cherry | 495a394 | 2020-03-27 14:08:20 -0700 | [diff] [blame] | 916 | } |
The Android Open Source Project | 4f6e8d7 | 2008-10-21 07:00:00 -0700 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | return 0; |
| 920 | } |
Tom Cherry | 81f5d3e | 2017-06-22 12:53:17 -0700 | [diff] [blame] | 921 | |
| 922 | } // namespace init |
| 923 | } // namespace android |