reboot.cpp revision 3f5eaae526413a29de899270714469c76dc91ec8
18d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park/* 28d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * Copyright (C) 2017 The Android Open Source Project 38d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * 48d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * Licensed under the Apache License, Version 2.0 (the "License"); 58d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * you may not use this file except in compliance with the License. 68d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * You may obtain a copy of the License at 78d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * 88d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * http://www.apache.org/licenses/LICENSE-2.0 98d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * 108d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * Unless required by applicable law or agreed to in writing, software 118d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * distributed under the License is distributed on an "AS IS" BASIS, 128d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 138d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * See the License for the specific language governing permissions and 148d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * limitations under the License. 158d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park */ 163f5eaae526413a29de899270714469c76dc91ec8Tom Cherry 173f5eaae526413a29de899270714469c76dc91ec8Tom Cherry#include "reboot.h" 183f5eaae526413a29de899270714469c76dc91ec8Tom Cherry 198d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <dirent.h> 208d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <fcntl.h> 218d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <mntent.h> 228d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/cdefs.h> 238d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/mount.h> 248d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/quota.h> 258d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/reboot.h> 268d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/stat.h> 278d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/syscall.h> 288d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/types.h> 298d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <sys/wait.h> 308d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 318d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <memory> 327830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park#include <set> 338d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <thread> 348d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <vector> 358d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 368d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <android-base/file.h> 373f5eaae526413a29de899270714469c76dc91ec8Tom Cherry#include <android-base/logging.h> 388d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <android-base/macros.h> 39ccf23537eeacfa47e5f18dd3b75089886d177c1bTom Cherry#include <android-base/properties.h> 408d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <android-base/stringprintf.h> 418d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <android-base/strings.h> 428d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <bootloader_message/bootloader_message.h> 438d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <cutils/android_reboot.h> 448d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <fs_mgr.h> 458d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include <logwrap/logwrap.h> 468d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 477830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park#include "property_service.h" 488d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park#include "service.h" 498d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 508d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkusing android::base::StringPrintf; 518d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 528d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park// represents umount status during reboot / shutdown. 538d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkenum UmountStat { 548d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* umount succeeded. */ 558d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park UMOUNT_STAT_SUCCESS = 0, 568d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* umount was not run. */ 578d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park UMOUNT_STAT_SKIPPED = 1, 588d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* umount failed with timeout. */ 598d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park UMOUNT_STAT_TIMEOUT = 2, 608d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* could not run due to error */ 618d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park UMOUNT_STAT_ERROR = 3, 628d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* not used by init but reserved for other part to use this to represent the 638d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park the state where umount status before reboot is not found / available. */ 648d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park UMOUNT_STAT_NOT_AVAILABLE = 4, 658d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park}; 668d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 678d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park// Utility for struct mntent 688d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkclass MountEntry { 698d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park public: 708d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park explicit MountEntry(const mntent& entry, bool isMounted = true) 718d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park : mnt_fsname_(entry.mnt_fsname), 728d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park mnt_dir_(entry.mnt_dir), 738d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park mnt_type_(entry.mnt_type), 748d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park is_mounted_(isMounted) {} 758d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 768d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park bool IsF2Fs() const { return mnt_type_ == "f2fs"; } 778d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 788d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park bool IsExt4() const { return mnt_type_ == "ext4"; } 798d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 808d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park bool is_mounted() const { return is_mounted_; } 818d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 828d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park void set_is_mounted() { is_mounted_ = false; } 838d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 848d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park const std::string& mnt_fsname() const { return mnt_fsname_; } 858d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 868d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park const std::string& mnt_dir() const { return mnt_dir_; } 878d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 888d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park static bool IsBlockDevice(const struct mntent& mntent) { 898d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return android::base::StartsWith(mntent.mnt_fsname, "/dev/block"); 908d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 918d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 928d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park static bool IsEmulatedDevice(const struct mntent& mntent) { 938d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park static const std::string SDCARDFS_NAME = "sdcardfs"; 948d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return android::base::StartsWith(mntent.mnt_fsname, "/data/") && 958d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park SDCARDFS_NAME == mntent.mnt_type; 968d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 978d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 988d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park private: 998d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::string mnt_fsname_; 1008d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::string mnt_dir_; 1018d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::string mnt_type_; 1028d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park bool is_mounted_; 1038d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park}; 1048d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1058d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park// Turn off backlight while we are performing power down cleanup activities. 1068d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic void TurnOffBacklight() { 1078d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park static constexpr char OFF[] = "0"; 1088d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1098d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park android::base::WriteStringToFile(OFF, "/sys/class/leds/lcd-backlight/brightness"); 1108d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1118d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park static const char backlightDir[] = "/sys/class/backlight"; 1128d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir(backlightDir), closedir); 1138d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (!dir) { 1148d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return; 1158d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 1168d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1178d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park struct dirent* dp; 1188d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park while ((dp = readdir(dir.get())) != nullptr) { 1198d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (((dp->d_type != DT_DIR) && (dp->d_type != DT_LNK)) || (dp->d_name[0] == '.')) { 1208d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park continue; 1218d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 1228d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1238d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::string fileName = StringPrintf("%s/%s/brightness", backlightDir, dp->d_name); 1248d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park android::base::WriteStringToFile(OFF, fileName); 1258d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 1268d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 1278d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1288d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic void DoFsck(const MountEntry& entry) { 1298d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park static constexpr int UNMOUNT_CHECK_TIMES = 10; 1308d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1318d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (!entry.IsF2Fs() && !entry.IsExt4()) return; 1328d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1338d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park int count = 0; 1348d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park while (count++ < UNMOUNT_CHECK_TIMES) { 1358d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park int fd = TEMP_FAILURE_RETRY(open(entry.mnt_fsname().c_str(), O_RDONLY | O_EXCL)); 1368d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (fd >= 0) { 1378d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* |entry->mnt_dir| has sucessfully been unmounted. */ 1388d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park close(fd); 1398d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park break; 1408d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } else if (errno == EBUSY) { 1418d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // Some processes using |entry->mnt_dir| are still alive. Wait for a 1428d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // while then retry. 1438d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::this_thread::sleep_for(5000ms / UNMOUNT_CHECK_TIMES); 1448d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park continue; 1458d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } else { 1468d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* Cannot open the device. Give up. */ 1478d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return; 1488d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 1498d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 1508d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1518d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // NB: With watchdog still running, there is no cap on the time it takes 1528d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // to complete the fsck, from the users perspective the device graphics 1538d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // and responses are locked-up and they may choose to hold the power 1548d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // button in frustration if it drags out. 1558d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1568d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park int st; 1578d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (entry.IsF2Fs()) { 1588d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park const char* f2fs_argv[] = { 1598d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park "/system/bin/fsck.f2fs", "-f", entry.mnt_fsname().c_str(), 1608d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park }; 1618d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park android_fork_execvp_ext(arraysize(f2fs_argv), (char**)f2fs_argv, &st, true, LOG_KLOG, true, 1628d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park nullptr, nullptr, 0); 1638d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } else if (entry.IsExt4()) { 1648d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park const char* ext4_argv[] = { 1658d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park "/system/bin/e2fsck", "-f", "-y", entry.mnt_fsname().c_str(), 1668d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park }; 1678d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park android_fork_execvp_ext(arraysize(ext4_argv), (char**)ext4_argv, &st, true, LOG_KLOG, true, 1688d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park nullptr, nullptr, 0); 1698d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 1708d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 1718d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1728d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic void ShutdownVold() { 1738d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park const char* vdc_argv[] = {"/system/bin/vdc", "volume", "shutdown"}; 1748d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park int status; 1758d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park android_fork_execvp_ext(arraysize(vdc_argv), (char**)vdc_argv, &status, true, LOG_KLOG, true, 1768d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park nullptr, nullptr, 0); 1778d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 1788d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1798d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic void LogShutdownTime(UmountStat stat, Timer* t) { 1808d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LOG(WARNING) << "powerctl_shutdown_time_ms:" << std::to_string(t->duration_ms()) << ":" << stat; 1818d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 1828d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1838d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic void __attribute__((noreturn)) 1848d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young ParkRebootSystem(unsigned int cmd, const std::string& rebootTarget) { 1853cd8c6f9123883d02e1c4c146e1ef7bfcfa170a3Keun-young Park LOG(INFO) << "Reboot ending, jumping to kernel"; 1868d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park switch (cmd) { 1878d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park case ANDROID_RB_POWEROFF: 1888d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park reboot(RB_POWER_OFF); 1898d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park break; 1908d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1918d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park case ANDROID_RB_RESTART2: 1928d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park syscall(__NR_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, 1938d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LINUX_REBOOT_CMD_RESTART2, rebootTarget.c_str()); 1948d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park break; 1958d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 1968d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park case ANDROID_RB_THERMOFF: 1978d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park reboot(RB_POWER_OFF); 1988d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park break; 1998d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2008d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // In normal case, reboot should not return. 2018d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park PLOG(FATAL) << "reboot call returned"; 2028d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park abort(); 2038d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 2048d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 205aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Parkstatic void DoSync() { 206aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park // quota sync is not done by sync call, so should be done separately. 207aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park // quota sync is in VFS level, so do it before sync, which goes down to fs level. 208aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park int r = quotactl(QCMD(Q_SYNC, 0), nullptr, 0 /* do not care */, 0 /* do not care */); 209aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park if (r < 0) { 210aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park PLOG(ERROR) << "quotactl failed"; 211aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park } 212aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park sync(); 213aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park} 214aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park 2158d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park/* Find all read+write block devices and emulated devices in /proc/mounts 2168d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * and add them to correpsponding list. 2178d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park */ 2188d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic bool FindPartitionsToUmount(std::vector<MountEntry>* blockDevPartitions, 2198d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::vector<MountEntry>* emulatedPartitions) { 2208d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::unique_ptr<std::FILE, int (*)(std::FILE*)> fp(setmntent("/proc/mounts", "r"), endmntent); 2218d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (fp == nullptr) { 2228d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park PLOG(ERROR) << "Failed to open /proc/mounts"; 2238d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return false; 2248d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2258d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park mntent* mentry; 2268d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park while ((mentry = getmntent(fp.get())) != nullptr) { 2278d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (MountEntry::IsBlockDevice(*mentry) && hasmntopt(mentry, "rw")) { 2288d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park blockDevPartitions->emplace_back(*mentry); 2298d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } else if (MountEntry::IsEmulatedDevice(*mentry)) { 2308d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park emulatedPartitions->emplace_back(*mentry); 2318d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2328d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2338d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return true; 2348d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 2358d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 2368d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic bool UmountPartitions(std::vector<MountEntry>* partitions, int maxRetry, int flags) { 2378d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park static constexpr int SLEEP_AFTER_RETRY_US = 100000; 2388d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 2398d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park bool umountDone; 2408d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park int retryCounter = 0; 2418d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 2428d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park while (true) { 2438d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park umountDone = true; 2448d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park for (auto& entry : *partitions) { 2458d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (entry.is_mounted()) { 2468d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park int r = umount2(entry.mnt_dir().c_str(), flags); 2478d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (r == 0) { 2488d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park entry.set_is_mounted(); 2498d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LOG(INFO) << StringPrintf("umounted %s, flags:0x%x", entry.mnt_fsname().c_str(), 2508d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park flags); 2518d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } else { 2528d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park umountDone = false; 2537830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park PLOG(WARNING) << StringPrintf("cannot umount %s, mnt_dir %s, flags:0x%x", 2547830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park entry.mnt_fsname().c_str(), 2557830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park entry.mnt_dir().c_str(), flags); 2568d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2578d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2588d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2598d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (umountDone) break; 2608d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park retryCounter++; 2618d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (retryCounter >= maxRetry) break; 2628d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park usleep(SLEEP_AFTER_RETRY_US); 2638d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2648d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return umountDone; 2658d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 2668d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 2673ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Parkstatic void KillAllProcesses() { android::base::WriteStringToFile("i", "/proc/sysrq-trigger"); } 2683ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park 2698d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park/* Try umounting all emulated file systems R/W block device cfile systems. 2708d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * This will just try umount and give it up if it fails. 2718d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * For fs like ext4, this is ok as file system will be marked as unclean shutdown 2728d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * and necessary check can be done at the next reboot. 2738d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * For safer shutdown, caller needs to make sure that 2748d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * all processes / emulated partition for the target fs are all cleaned-up. 2758d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * 2768d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * return true when umount was successful. false when timed out. 2778d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park */ 2783ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Parkstatic UmountStat TryUmountAndFsck(bool runFsck, int timeoutMs) { 2793ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park Timer t; 2808d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::vector<MountEntry> emulatedPartitions; 2818d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::vector<MountEntry> blockDevRwPartitions; 2828d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 2838d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park TurnOffBacklight(); // this part can take time. save power. 2848d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 2858d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (!FindPartitionsToUmount(&blockDevRwPartitions, &emulatedPartitions)) { 2868d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return UMOUNT_STAT_ERROR; 2878d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2888d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (emulatedPartitions.size() > 0) { 2898d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LOG(WARNING) << "emulated partitions still exist, will umount"; 2908d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* Pending writes in emulated partitions can fail umount. After a few trials, detach 2918d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * it so that it can be umounted when all writes are done. 2928d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park */ 2938d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (!UmountPartitions(&emulatedPartitions, 1, 0)) { 2948d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park UmountPartitions(&emulatedPartitions, 1, MNT_DETACH); 2958d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 2968d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 297aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park DoSync(); // emulated partition change can lead to update 2988d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park UmountStat stat = UMOUNT_STAT_SUCCESS; 2998d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park /* data partition needs all pending writes to be completed and all emulated partitions 3008d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * umounted. If umount failed in the above step, it DETACH is requested, so umount can 3018d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * still happen while waiting for /data. If the current waiting is not good enough, give 3028d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park * up and leave it to e2fsck after reboot to fix it. 3038d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park */ 3043ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park int remainingTimeMs = timeoutMs - t.duration_ms(); 3053ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park // each retry takes 100ms, and run at least once. 3063ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park int retry = std::max(remainingTimeMs / 100, 1); 3073ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park if (!UmountPartitions(&blockDevRwPartitions, retry, 0)) { 3083ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park /* Last resort, kill all and try again */ 3093ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park LOG(WARNING) << "umount still failing, trying kill all"; 3103ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park KillAllProcesses(); 3113ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park DoSync(); 3123ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park if (!UmountPartitions(&blockDevRwPartitions, 1, 0)) { 3133ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park stat = UMOUNT_STAT_TIMEOUT; 3143ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park } 3158d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 3163ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park // fsck part is excluded from timeout check. It only runs for user initiated shutdown 3173ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park // and should not affect reboot time. 3188d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (stat == UMOUNT_STAT_SUCCESS && runFsck) { 3198d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park for (auto& entry : blockDevRwPartitions) { 3208d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park DoFsck(entry); 3218d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 3228d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 3238d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 3248d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park return stat; 3258d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 3268d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 3278d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkstatic void __attribute__((noreturn)) DoThermalOff() { 3288d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LOG(WARNING) << "Thermal system shutdown"; 3298d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park DoSync(); 3308d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park RebootSystem(ANDROID_RB_THERMOFF, ""); 3318d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park abort(); 3328d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 3338d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 3348d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Parkvoid DoReboot(unsigned int cmd, const std::string& reason, const std::string& rebootTarget, 3358d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park bool runFsck) { 3368d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park Timer t; 3373cd8c6f9123883d02e1c4c146e1ef7bfcfa170a3Keun-young Park LOG(INFO) << "Reboot start, reason: " << reason << ", rebootTarget: " << rebootTarget; 3388d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 3398d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park android::base::WriteStringToFile(StringPrintf("%s\n", reason.c_str()), LAST_REBOOT_REASON_FILE); 3408d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 3418d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (cmd == ANDROID_RB_THERMOFF) { // do not wait if it is thermal 3428d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park DoThermalOff(); 3438d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park abort(); 3448d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 345aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park 3463ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park /* TODO update default waiting time based on usage data */ 347c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park constexpr unsigned int shutdownTimeoutDefault = 10; 348c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park unsigned int shutdownTimeout = shutdownTimeoutDefault; 349c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park if (SHUTDOWN_ZERO_TIMEOUT) { // eng build 350c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park shutdownTimeout = 0; 351c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park } else { 352c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park shutdownTimeout = 353c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park android::base::GetUintProperty("ro.build.shutdown_timeout", shutdownTimeoutDefault); 354c4ffa5c47d0ac84cae57337412c2459f2cb11da5Keun-young Park } 355ccf23537eeacfa47e5f18dd3b75089886d177c1bTom Cherry LOG(INFO) << "Shutdown timeout: " << shutdownTimeout; 356aa08ea458a3aea9f671f847f4e005c3bd39da201Keun-young Park 3577830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park // keep debugging tools until non critical ones are all gone. 3587830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park const std::set<std::string> kill_after_apps{"tombstoned", "logd", "adbd"}; 3597830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park // watchdogd is a vendor specific component but should be alive to complete shutdown safely. 3607830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park const std::set<std::string> to_starts{"watchdogd", "vold"}; 3617830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park ServiceManager::GetInstance().ForEachService([&kill_after_apps, &to_starts](Service* s) { 3627830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park if (kill_after_apps.count(s->name())) { 3637830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park s->SetShutdownCritical(); 3647830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park } else if (to_starts.count(s->name())) { 3657830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park s->Start(); 3667830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park s->SetShutdownCritical(); 3678d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 3687830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park }); 3697830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park 3707830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park Service* bootAnim = ServiceManager::GetInstance().FindServiceByName("bootanim"); 3717830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park Service* surfaceFlinger = ServiceManager::GetInstance().FindServiceByName("surfaceflinger"); 3727830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park if (bootAnim != nullptr && surfaceFlinger != nullptr && surfaceFlinger->IsRunning()) { 3737830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park property_set("service.bootanim.exit", "0"); 3747830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park // Could be in the middle of animation. Stop and start so that it can pick 3757830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park // up the right mode. 3767830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park bootAnim->Stop(); 3777830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park // start all animation classes if stopped. 3787830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park ServiceManager::GetInstance().ForEachServiceInClass("animation", [](Service* s) { 3797830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park s->Start(); 3807830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park s->SetShutdownCritical(); // will not check animation class separately 3817830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park }); 3827830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park bootAnim->Start(); 3837830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park surfaceFlinger->SetShutdownCritical(); 3847830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park bootAnim->SetShutdownCritical(); 3858d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 3867830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park 3878d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // optional shutdown step 3888d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // 1. terminate all services except shutdown critical ones. wait for delay to finish 3893ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park if (shutdownTimeout > 0) { 3908d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LOG(INFO) << "terminating init services"; 3918d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 3928d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // Ask all services to terminate except shutdown critical ones. 3938d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park ServiceManager::GetInstance().ForEachService([](Service* s) { 3948d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (!s->IsShutdownCritical()) s->Terminate(); 3958d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park }); 3968d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 3978d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park int service_count = 0; 3983ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park // Up to half as long as shutdownTimeout or 3 seconds, whichever is lower. 3993ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park unsigned int terminationWaitTimeout = std::min<unsigned int>((shutdownTimeout + 1) / 2, 3); 4003ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park while (t.duration_s() < terminationWaitTimeout) { 4018d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park ServiceManager::GetInstance().ReapAnyOutstandingChildren(); 4028d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 4038d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park service_count = 0; 4048d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park ServiceManager::GetInstance().ForEachService([&service_count](Service* s) { 4058d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // Count the number of services running except shutdown critical. 4068d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // Exclude the console as it will ignore the SIGTERM signal 4078d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // and not exit. 4088d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // Note: SVC_CONSOLE actually means "requires console" but 4098d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // it is only used by the shell. 4108d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (!s->IsShutdownCritical() && s->pid() != 0 && (s->flags() & SVC_CONSOLE) == 0) { 4118d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park service_count++; 4128d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 4138d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park }); 4148d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 4158d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (service_count == 0) { 4168d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // All terminable services terminated. We can exit early. 4178d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park break; 4188d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 4198d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 4208d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // Wait a bit before recounting the number or running services. 4218d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park std::this_thread::sleep_for(50ms); 4228d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 4238d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LOG(INFO) << "Terminating running services took " << t 4248d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park << " with remaining services:" << service_count; 4258d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 4268d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 4278d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // minimum safety steps before restarting 4288d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // 2. kill all services except ones that are necessary for the shutdown sequence. 4297830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park ServiceManager::GetInstance().ForEachService([&kill_after_apps](Service* s) { 4307830d59500eb0cb24333dc357ac5bed38270e181Keun-young Park if (!s->IsShutdownCritical() || kill_after_apps.count(s->name())) s->Stop(); 4318d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park }); 4328d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park ServiceManager::GetInstance().ReapAnyOutstandingChildren(); 4338d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park 4348d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // 3. send volume shutdown to vold 4358d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park Service* voldService = ServiceManager::GetInstance().FindServiceByName("vold"); 4368d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park if (voldService != nullptr && voldService->IsRunning()) { 4378d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park ShutdownVold(); 4388d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } else { 4398d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LOG(INFO) << "vold not running, skipping vold shutdown"; 4408d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park } 4418d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // 4. sync, try umount, and optionally run fsck for user shutdown 4428d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park DoSync(); 4433ee0df9bdfef5e872d278b3d4d073a379ca62451Keun-young Park UmountStat stat = TryUmountAndFsck(runFsck, shutdownTimeout * 1000 - t.duration_ms()); 4448d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park LogShutdownTime(stat, &t); 4458d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park // Reboot regardless of umount status. If umount fails, fsck after reboot will fix it. 4468d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park RebootSystem(cmd, rebootTarget); 4478d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park abort(); 4488d01f63f50fb001f41835a0dab636981f2ba76ddKeun-young Park} 449