#include "systemrestoreproxy.h" #include #include #include #include #include #include "../common/utils.h" #include "mymountproxy.h" IMPLEMENT_DYNCREATE(SystemRestoreProxy) /** * @brief 构造函数 */ SystemRestoreProxy::SystemRestoreProxy() { m_bSuccess = false; m_p = nullptr; m_bRetainUserData = false; } /** * @brief 析构函数 */ SystemRestoreProxy::~SystemRestoreProxy() { delete m_p; } /** * @brief 环境检测 * @return false,检测失败;true,检测成功 */ bool SystemRestoreProxy::checkEnvEx() { qDebug() << "SystemRestoreProxy::checkEnvEx invoke begin"; // 1、检测.user.txt是否存在 m_userFile = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/" + PATHS_USER_FILE; m_userFile.replace("//", "/"); if (!Utils::fileExists(m_userFile)) { qCritical(".user.txt文件不存在"); emit checkResult(int(BackupResult::WRITE_BACKUP_PATHS_TO_USER_FAILED)); return false; } // 2、检测.exclude.user.txt是否存在 m_excludeUserFile = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/" + EXCLUDE_PATHS_USER_FILE; m_excludeUserFile.replace("//", "/"); if (!Utils::fileExists(m_excludeUserFile)) { qCritical(".exclude.user.txt文件不存在"); emit checkResult(int(BackupResult::WRITE_EXCLUDE_BACKUP_PATHS_TO_USER_FAILED)); return false; } // 3、检测还原点是否存在 m_backupPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/data"; m_backupPath.replace("//", "/"); if (Utils::isDirEmpty(m_backupPath)) { qCritical("还原点{uuid}/data目录不存在"); emit checkResult(int(BackupResult::INC_NOT_FOUND_DIR)); return false; } // 4、检测xml中的还原点是否还存在 QString xmlPath = Utils::getSysRootPath() + BACKUP_XML_PATH; xmlPath.replace("//", "/"); ParseBackupList parse(xmlPath); m_backupPoint = parse.findBackupPointByUuid(m_backupWrapper.m_uuid); if (m_backupPoint.m_uuid.isEmpty()) { qCritical("xml中还原点不存在"); emit checkResult(int(BackupResult::INC_NOT_FOUND_DIR)); return false; } m_curUuid = m_backupWrapper.m_uuid; emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS)); qDebug() << "SystemRestoreProxy::checkEnvEx invoke end"; return true; } /** * @brief 执行还原逻辑 */ void SystemRestoreProxy::doWorkEx() { qDebug() << "SystemRestoreProxy::doWorkEx invoke begin"; // 1、校验 if (!checkEnvEx()) return ; // 2、还原efi(兼容旧版本的备份) if (!restoreEfi()) { qCritical("/boot/efi目录同步失败"); emit checkResult(int(BackupResult::EFI_RSYNC_FAIL)); return ; } // 3、还原系统 restoreSystem(); qDebug() << "SystemRestoreProxy::doWorkEx invoke end"; } /** * @brief 还原efi(兼容旧版本的备份) * @return */ bool SystemRestoreProxy::restoreEfi() { qDebug() << "SystemRestoreProxy::restoreEfi invoke begin"; // 以读写方式重新挂载boot分区,因为有的机器默认以只读挂载 Utils::remountBoot(); // 是否有/boot/efi目录 QString efiPath = Utils::getSysRootPath() + "/boot/efi"; efiPath.replace("//", "/"); if (!Utils::isDirEmpty(efiPath)) { // 1、修复源数据 repairEfi(); sync(); // 2、重新rw读写挂载 Utils::remountEfi(); // 3、同步efi return rsyncEfi(); } qDebug() << "SystemRestoreProxy::restoreEfi invoke end"; return true; } /** * @brief 修复efi目录 */ void SystemRestoreProxy::repairEfi() { QString qsEfiPath = m_backupPath + "/efi"; if (!Utils::isDirEmpty(qsEfiPath)) { // 存在/efi说明是老备份数据,尽量修正老数据 QStringList args; args << "-f"; args << qsEfiPath; QString newPath = m_backupPath + "/boot"; args << newPath; QProcess::execute("mv", args); } } /** * @brief 同步efi */ bool SystemRestoreProxy::rsyncEfi() { QString efiPath = m_backupPath + "/boot/efi/"; if (Utils::isDirEmpty(efiPath)) efiPath = efiPath = m_backupPath + "/efi/"; if (Utils::isDirEmpty(efiPath)) return true; QStringList args = getRsyncArgs(SystemRestoreScene::EFI_RESTORE); QString mountPath = Utils::getSysRootPath() + "/boot/efi/"; mountPath.replace("//", "/"); args << efiPath << mountPath; m_p = new RsyncPathToDirProcess(this); bool result = m_p->start(args); delete m_p; m_p = nullptr; return result; } /** * @brief 根据场景获取rsync命令参数 * @param scene,场景 * @return 组装好的rsync的参数信息 */ QStringList SystemRestoreProxy::getRsyncArgs(SystemRestoreScene scene) { QStringList args; args << "-avAHXr"; args << "--info=progress2"; args << "--no-inc-recursive"; args << "--ignore-missing-args"; args << "--delete"; QDir dataDir(m_srcPath + "/data"); QFile file(m_srcPath + "/etc/uid_list"); QDir efiDir(m_srcPath + "/boot/efi"); QStringList excludes; switch (scene) { case SystemRestoreScene::RESTORE_SYSTEM_WITH_DATA : args << "--exclude=/home"; args << "--exclude=/root"; if (Utils::isHuawei990()) { args << "--exclude=/data"; } else { args << "--exclude=/data/usershare"; } // 保留指纹数据,用户密码、角色、权限、生物识别等信息不需要改变 args << "--exclude=/var/lib/biometric-auth"; args << "--exclude=/data/sec_storage_data"; args << "--exclude=/etc/passwd"; args << "--exclude=/etc/shadow"; args << "--exclude=/etc/group"; args << "--exclude=/etc/gshadow"; args << "--exclude=/etc/sudoers"; args << "--exclude=/data/home"; args << "--exclude=/data/root"; // 云图片作为桌面背景的路径属于用户数据 args << "--exclude=/var/lib/AccountsService"; // 域用户相关信息,还原后保持不退域 args << "--exclude=/etc/sssd"; args << "--exclude=/var/lib/sss"; args << "--exclude=/usr/share/sssd"; args << "--exclude=/etc/ipa"; args << "--exclude=/etc/krb5.keytab"; args << "--exclude=/etc/krb5.conf"; args << "--exclude=/var/lib/ipa-client"; args << "--exclude=/etc/nsswitch.conf"; args << "--exclude=/etc/pam.d"; args << "--exclude=/etc/hosts"; args << "--exclude=/etc/hostname"; args << "--exclude=/etc/hedron"; args << "--exclude=/etc/kcm"; args << "--exclude=/usr/hedron/hedronagent"; args << "--exclude=/etc/.kyinfo"; args << "--exclude=/etc/LICENSE"; args << "--exclude=/etc/ssl/certs"; args << "--exclude=/usr/share/ca-certificates"; args << "--exclude=/etc/NetworkManager"; args << "--exclude=/var/lib/pam"; // 安装kylin args << "--exclude=/usr/share/applications/kylin-os-installer.desktop"; args << "--exclude=*/.local/share/applications/kylin-os-installer.desktop"; args << "--exclude=/etc/xdg/autostart/kylin-os-installer.desktop"; // 此处不要break,因为还需要排除SYSTEM_RESTORE中的项 case SystemRestoreScene::SYSTEM_RESTORE : // 还原工具不还原自身 if (Utils::getSysRootPath() != CASPER_ROOT_PATH) { // 试用模式时可以还原/target下面的备份还原工具 args << "--exclude=/usr/bin/backup-daemon"; args << "--exclude=/usr/bin/kybackup"; } args << "--exclude=/usr/bin/mount_fstab_efi"; args << "--exclude=/usr/bin/backup-auto-efi"; args << "--exclude=/usr/bin/backup-auto"; args << "--exclude=/usr/bin/rsync"; args << "--exclude=/usr/share/rsync"; args << "--exclude=/usr/share/initramfs-tools/hooks/kybackup-hooks"; args << "--exclude=/usr/share/initramfs-tools/scripts/*/kybackup"; // 还原后仍然保持激活状态 args << "--exclude=/etc/LICENSE"; args << "--exclude=/etc/.kyinfo"; args << "--exclude=/etc/.kyactivation"; args << "--exclude=/etc/.kyhwid"; // 文件安全箱 args << "--exclude=/data/security-dir"; // 以前的出厂备份和grub备份没有备份/data,还原时需要判断/data是否存在,如不存在需要屏蔽掉,不然会将主机上的/data删除,造成问题 // 此为兼容以前备份的老数据而改,等以后老的备份估计不存在了可已去掉 if (!dataDir.exists()) { args << "--exclude=/data"; } if (!file.exists()) { args << "--exclude=/etc/uid_list"; } // 为兼容以前的老备份数据,增加下面几行 if (efiDir.isEmpty()) { args << QString("--exclude=/boot/efi"); } // 系统安装后有的会将/data/home /data/root挂载到的/home /root上,实际文件是存放在/data/home /data/root下面 Utils::excludeFstabBindPath(excludes); // 自定义备份的路径也需要跳过,不进行还原 Utils::excludeCustomizePath(excludes); for (const QString& item : excludes) { QDir itemDir(m_srcPath + item); // 以后统一用/home /root这种路径, 兼容老备份数据(原来的U盘备份,在mksquashfs时排除bind挂载的任意一方时,都备份不上) if (item == "/data/home") { QDir homeDir(m_srcPath + "/home"); if (!homeDir.isEmpty()) { args << QString("--exclude=/data/home"); } else if (!itemDir.isEmpty()) { args << QString("--exclude=/home"); } else { args << QString("--exclude=/data/home"); args << QString("--exclude=/home"); } continue; } else if (item == "/data/root") { QDir homeDir(m_srcPath + "/root"); if (!homeDir.isEmpty()) { args << QString("--exclude=/data/root"); } else if (!itemDir.isEmpty()) { args << QString("--exclude=/root"); } else { args << QString("--exclude=/data/root"); args << QString("--exclude=/root"); } continue; } args << QString("--exclude=") + item; } args << "--exclude-from" << m_excludeUserFile; args << "--files-from" << m_userFile; break ; case SystemRestoreScene::EFI_RESTORE : break ; default: return args; } return args; } /** * @brief 系统还原 */ void SystemRestoreProxy::restoreSystem() { // 停止安全初始化服务,以防过高的CPU占有率,因为还原时安全初始化服务会逐个文件打标记,造成cpu占有率超高系统卡顿 Utils::stopKysecInit(); // 停止网络服务,以防网络更新 Utils::stopNetwork(); // 本地系统备份没有img挂载,故下面两个路径相等 m_srcPath = m_backupPath; QString destPath = Utils::getSysRootPath(); QStringList args; // 自动更新的备份还原时保留用户数据 if (m_curUuid == AUTO_BACKUP_UUID || m_backupWrapper.m_type == BackupType::RESTORE_SYSTEM_WITH_DATA) { args = getRsyncArgs(SystemRestoreScene::RESTORE_SYSTEM_WITH_DATA); m_bRetainUserData = true; } else { args = getRsyncArgs(SystemRestoreScene::SYSTEM_RESTORE); } args << m_srcPath + "/"; destPath += "/"; destPath.replace("//", "/"); args << destPath; m_p = new RsyncPathToDirProcess(this); connect(m_p, &RsyncPathToDirProcess::progress, this, &SystemRestoreProxy::progress); connect(m_p, &RsyncPathToDirProcess::finished, this, [&](bool result) { if (result) { QString time = QDateTime::currentDateTime().toString("yy-MM-dd hh:mm:ss"); // Utils::writeBackupLog(time + "," + m_curUuid + "," + QString::number(m_backupWrapper.m_type) + ",,," + QString::number(m_backupWrapper.m_frontUid)); Utils::writeBackupLog(time + "," + m_curUuid + "," + QString::number(m_backupWrapper.m_type) + ",,,," + m_backupPoint.m_backupName); // 华为9a0等机型设定1分钟后关机重启,原因:运行时还原备份还原工具本身可能会造成运行中的备份还原崩溃,从而无法执行到后面的自动重启代码,故在此预设。 // 不再只华为机型使用此方法,将全部机型都改为此方法,缩短操作链 // if (Utils::isHuawei990()) { QString msg; Utils::executeCMD("shutdown -r +1", msg); qDebug() << msg; } Utils::updateSyncFile(); Utils::wait(2); QString fileIfSync = Utils::getSysRootPath() + FILE_IF_SYNC; fileIfSync.replace("//", "/"); QFileInfo file(fileIfSync); QDateTime beginTime = file.fileTime(QFileDevice::FileModificationTime); QProcess::execute("sync"); Utils::wait(20); Utils::updateSyncFile(); while (1) { Utils::wait(2); QFileInfo file1(fileIfSync); QDateTime UpdateTime = file1.fileTime(QFileDevice::FileModificationTime); if (UpdateTime > beginTime) break; } if (FACTORY_BACKUP_UUID == m_curUuid && m_backupWrapper.m_type == BackupType::RESTORE_SYSTEM) { // 出厂还原有的机器上删除/home/xxx有残留,故在此再强制删除一下,sudo rm -rf命令一遍还删除不了(报错:无法删除/home/xx/.config:目录非空,应该是删除后又自动生成了),多删除几次还不是非常干净,^_^ removeHome(QString(Utils::getSysRootPath() + "/home").replace("//", "/")); removeHome(QString(Utils::getSysRootPath() + "/data/home").replace("//", "/")); } // 最后,再一次还原home目录以查缺补漏,因为系统还原过程中~/.config等目录中的部分文件可能会更新,会引起部分bug(如任务栏固定图标还原不完整等) this->rsyncAgain(); ::sync(); // 2209后新增了一些依赖,还原到以前的4.0.13版后缺少依赖无法运行,故此最后还得还原backup-daemon和kybackup本身 // 兼容Qt库从5.12.8升级到5.15,系统还原的最后也将备份还原工具本身还原 // QString version = Utils::getBackupVersion(); // if (version.contains("4.0.13")) if (Utils::getSysRootPath() != CASPER_ROOT_PATH) { // initrd.img已经还原为旧状态,需要将新版本的backup-auto-efi等脚本文件更新到initrd.img中,这样我们修改后的新逻辑才能生效 // QString msg; // Utils::executeCMD("update-initramfs -u", msg); // qDebug() << msg; // 解决bug:182576 【2203自适应升级2309】【2303自适应升级2309】升级成功还原系统失败,应该是有更新包修改了UEFI固件查找引导器文件的引导地址 // 故系统还原完成后,重新执行下grub-install命令 QString msg; Utils::executeCMD("grub-install", msg); qDebug() << msg; // 写入标记:rsync_backup_self:${UUID}到文件/etc/file_if_sync中,表示需要还原backup-daemon和kybackup本身 // QString line("rsync_backup_self:"); // line += m_curUuid; // Utils::syncWriteFile(fileIfSync, line); // this->undoRestoreData(); // 加一层保险(因为有些机型上使用"update-initramfs -u"命令会失败,如:华为9006c的2203版等) // QString version = Utils::getBackupVersion(); // if (Utils::isHuawei990() && version.contains("4.0.13")) this->rsyncBackupSelf(); ::sync(); } emit this->workResult(result); Utils::wait(3); reboot(RB_AUTOBOOT); } else { emit this->workResult(result); } }); m_p->start(args, false); } /** * @brief 获取备份点里存在家目录的用户列表 * @param void * @return 获取备份点里存在家目录的用户列表 */ QStringList SystemRestoreProxy::getBackupPointUsers() { // 根据备份点里的/home或/data/home的子目录进行统计 QString homePath = m_backupPath + "/home"; homePath.replace("//","/"); QStringList users = getBackupPointUsers(homePath); QString dataHomePath = m_backupPath + "/data/home"; dataHomePath.replace("//","/"); users.append(getBackupPointUsers(dataHomePath)); return users; } QStringList SystemRestoreProxy::getBackupPointUsers(const QString& path) { QDir dir(path); if (dir.exists()) { return dir.entryList(QDir::NoDotAndDotDot | QDir::Dirs); } else { return QStringList(); } } /** * @brief 删除home子目录,此处主要用于删除用户残留信息 * @param path * @return */ void SystemRestoreProxy::removeHome(const QString& path) { qDebug() << "SystemRestoreProxy::removeHome invoke begin"; QDir dir(path); if (dir.exists()) { QStringList retainUsers = getBackupPointUsers(); qDebug() << retainUsers; QString subcmd("rm -rf "); QStringList list = dir.entryList(QDir::NoDotAndDotDot | QDir::Dirs); for (const QString& item : list) { // 出厂备份里面的/home/oem等保留 if (item == "oem") continue ; if (retainUsers.contains(item)) continue ; QString subPath = path; subPath += "/"; subPath += item; QDir subDir(subPath); subDir.removeRecursively(); qDebug() << (subcmd + subPath); QProcess::execute(subcmd + subPath); } // bool needRm = false; // QString subcmd("rm -rf "); // QString delDirs; // QStringList list = dir.entryList(QDir::NoDotAndDotDot | QDir::Dirs); // for (const QString& item : list) { // // 出厂备份里面的/home/oem等保留 // if (item == "oem") // continue ; // if (retainUsers.contains(item)) // continue ; // QString subPath = path; // subPath += "/"; // subPath += item; // QDir subDir(subPath); // subDir.removeRecursively(); // delDirs += "${rootmnt}"; // delDirs += path; // delDirs += "/"; // delDirs += item; // delDirs += " "; // needRm = true; // } // if (needRm) { // QString cmd = QString("bash -c \"%1\" ").arg(subcmd + delDirs); // cmd.replace("${rootmnt}", ""); // QProcess::execute(cmd); // } } qDebug() << "SystemRestoreProxy::removeHome invoke end"; } /** * @brief 再一次同步 * @note 意图通过多次同步查缺补漏,如: * 1、因为系统还原过程中~/.config等目录中的部分文件可能会更新,会引起部分bug: * a. 配网,打开奇安信浏览器,触发自动更新(或者软件商店手动更新),且奇安信默认固定在任务栏; * b. 下载安装微信,固定任务栏(新装任意第三方软件均可),会删除desktop文件 * c. 上面两种操作,都会触发任务栏配置更新;通过监控任务栏配置文件,在系统还原过程中,可以明显的看到,在还原1%的时候,配置文件还原到历史文件,桌面图标还原,然后下一秒配置文件就又更新成当前最新的了 */ void SystemRestoreProxy::rsyncAgain() { // 保留用户数据还原直接 if (m_bRetainUserData) return ; QString destPath = Utils::getSysRootPath() + "/home/"; destPath.replace("//", "/"); Utils::mkpath(destPath); RsyncPathToDirProcess * process = new RsyncPathToDirProcess(this); QStringList args; args << "-avAHXr"; args << m_srcPath + "/home/"; args << destPath; process->start(args); } /** * @brief 未做完的还原,需要在重启后initrd阶段执行备份还原脚本时再进行还原 * @note 当前只有备份工具自身未还原 */ void SystemRestoreProxy::undoRestoreData() { QString destPath = Utils::getSysRootPath() + "/var/log/yhkylin-backup-tools/"; destPath.replace("//", "/"); Utils::mkpath(destPath); RsyncPathToDirProcess * process = new RsyncPathToDirProcess(this); QStringList args; args << "-avAHXr"; args << m_srcPath + "/usr/bin/backup-daemon"; args << destPath; process->start(args); args.clear(); args << "-avAHXr"; args << m_srcPath + "/usr/bin/kybackup"; args << destPath; process->start(args); } /** * @brief 还原备份还原工具自身 * @note 在undoRestoreData基础上增加的一层保险(因为有些机型上使用"update-initramfs -u"命令会失败,如:华为9006c的2203版等) * 本来想在/etc/profile.d/目录或/etc/init.d/目录等下面增加一个.sh脚本文件以开机时自动执行,但试验了几种方式均都未执行,原因未知。 */ void SystemRestoreProxy::rsyncBackupSelf() { QString destPath = Utils::getSysRootPath() + "/usr/bin/"; destPath.replace("//", "/"); Utils::mkpath(destPath); RsyncPathToDirProcess * process = new RsyncPathToDirProcess(this); QStringList args; args << "-avAHXr"; args << m_srcPath + "/usr/bin/kybackup"; args << destPath; process->start(args); args.clear(); args << "-avAHXr"; args << m_srcPath + "/usr/bin/backup-daemon"; args << destPath; process->start(args); }