1 /* 2 * Copyright (C) 2017 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 17 package android.provider; 18 19 import static android.provider.settings.backup.DeviceSpecificSettings.DEVICE_SPECIFIC_SETTINGS_TO_BACKUP; 20 21 import static com.google.android.collect.Sets.newHashSet; 22 import static com.google.common.truth.Truth.assertWithMessage; 23 24 import static java.lang.reflect.Modifier.isFinal; 25 import static java.lang.reflect.Modifier.isPublic; 26 import static java.lang.reflect.Modifier.isStatic; 27 28 import android.platform.test.annotations.Presubmit; 29 import android.provider.settings.backup.GlobalSettings; 30 import android.provider.settings.backup.SecureSettings; 31 import android.provider.settings.backup.SystemSettings; 32 33 import androidx.test.filters.SmallTest; 34 import androidx.test.runner.AndroidJUnit4; 35 36 import com.android.server.display.feature.flags.Flags; 37 38 import org.junit.Test; 39 import org.junit.runner.RunWith; 40 41 import java.lang.reflect.Field; 42 import java.util.Collections; 43 import java.util.HashSet; 44 import java.util.Set; 45 46 /** Tests that ensure appropriate settings are backed up. */ 47 @Presubmit 48 @RunWith(AndroidJUnit4.class) 49 @SmallTest 50 public class SettingsBackupTest { 51 52 /** 53 * see {@link com.google.android.systemui.power.EnhancedEstimatesGoogleImpl} for more details 54 */ 55 public static final String HYBRID_SYSUI_BATTERY_WARNING_FLAGS = 56 "hybrid_sysui_battery_warning_flags"; 57 58 private static final Set<String> BACKUP_DENY_LIST_GLOBAL_SETTINGS = 59 newHashSet( 60 Settings.Global.ACTIVITY_MANAGER_CONSTANTS, 61 Settings.Global.ACTIVITY_STARTS_LOGGING_ENABLED, 62 Settings.Global.ADB_ALLOWED_CONNECTION_TIME, 63 Settings.Global.ADB_ENABLED, 64 Settings.Global.ADB_WIFI_ENABLED, 65 Settings.Global.ADB_DISCONNECT_SESSIONS_ON_REVOKE, 66 Settings.Global.AIRPLANE_MODE_ON, 67 Settings.Global.AIRPLANE_MODE_RADIOS, 68 Settings.Global.ALLOW_WORK_PROFILE_TELEPHONY_FOR_NON_DPM_ROLE_HOLDERS, 69 Settings.Global.SATELLITE_MODE_RADIOS, 70 Settings.Global.SATELLITE_MODE_ENABLED, 71 Settings.Global.AIRPLANE_MODE_TOGGLEABLE_RADIOS, 72 Settings.Global.ALLOW_USER_SWITCHING_WHEN_SYSTEM_USER_LOCKED, 73 Settings.Global.ALWAYS_FINISH_ACTIVITIES, 74 Settings.Global.ALWAYS_ON_DISPLAY_CONSTANTS, 75 Settings.Global.ANIMATOR_DURATION_SCALE, 76 Settings.Global.ANOMALY_DETECTION_CONSTANTS, 77 Settings.Global.ANOMALY_CONFIG, 78 Settings.Global.ANOMALY_CONFIG_VERSION, 79 Settings.Global.APN_DB_UPDATE_CONTENT_URL, 80 Settings.Global.APN_DB_UPDATE_METADATA_URL, 81 Settings.Global.APP_BINDING_CONSTANTS, 82 Settings.Global.APP_OPS_CONSTANTS, 83 Settings.Global.APP_STANDBY_ENABLED, 84 Settings.Global.APP_TIME_LIMIT_USAGE_SOURCE, 85 Settings.Global.ART_VERIFIER_VERIFY_DEBUGGABLE, 86 Settings.Global.ASSISTED_GPS_ENABLED, 87 Settings.Global.AUDIO_SAFE_VOLUME_STATE, 88 Settings.Global.AUDIO_SAFE_CSD_CURRENT_VALUE, 89 Settings.Global.AUDIO_SAFE_CSD_NEXT_WARNING, 90 Settings.Global.AUDIO_SAFE_CSD_DOSE_RECORDS, 91 Settings.Global.AUTOFILL_LOGGING_LEVEL, 92 Settings.Global.AUTOFILL_MAX_PARTITIONS_SIZE, 93 Settings.Global.AUTOFILL_MAX_VISIBLE_DATASETS, 94 Settings.Global.AUTO_TIME_ZONE_EXPLICIT, 95 Settings.Global.AVERAGE_TIME_TO_DISCHARGE, 96 Settings.Global.BATTERY_CHARGING_STATE_ENFORCE_LEVEL, 97 Settings.Global.BATTERY_CHARGING_STATE_UPDATE_DELAY, 98 Settings.Global.BATTERY_ESTIMATES_LAST_UPDATE_TIME, 99 Settings.Global.BROADCAST_BG_CONSTANTS, 100 Settings.Global.BROADCAST_FG_CONSTANTS, 101 Settings.Global.BROADCAST_OFFLOAD_CONSTANTS, 102 Settings.Global.BATTERY_DISCHARGE_DURATION_THRESHOLD, 103 Settings.Global.BATTERY_DISCHARGE_THRESHOLD, 104 Settings.Global.BATTERY_SAVER_DEVICE_SPECIFIC_CONSTANTS, 105 Settings.Global.BATTERY_STATS_CONSTANTS, 106 Settings.Global.BINDER_CALLS_STATS, 107 Settings.Global.BLE_SCAN_ALWAYS_AVAILABLE, 108 Settings.Global.BLE_SCAN_LOW_POWER_WINDOW_MS, 109 Settings.Global.BLE_SCAN_LOW_POWER_INTERVAL_MS, 110 Settings.Global.BLE_SCAN_BALANCED_WINDOW_MS, 111 Settings.Global.BLE_SCAN_BALANCED_INTERVAL_MS, 112 Settings.Global.BLE_SCAN_LOW_LATENCY_WINDOW_MS, 113 Settings.Global.BLE_SCAN_LOW_LATENCY_INTERVAL_MS, 114 Settings.Global.BLE_SCAN_BACKGROUND_MODE, 115 Settings.Global.BLOCKED_SLICES, 116 Settings.Global.BLOCKING_HELPER_DISMISS_TO_VIEW_RATIO_LIMIT, 117 Settings.Global.BLOCKING_HELPER_STREAK_LIMIT, 118 Settings.Global.BLUETOOTH_BTSNOOP_DEFAULT_MODE, 119 Settings.Global.BLUETOOTH_A2DP_SINK_PRIORITY_PREFIX, 120 Settings.Global.BLUETOOTH_A2DP_SRC_PRIORITY_PREFIX, 121 Settings.Global.BLUETOOTH_A2DP_SUPPORTS_OPTIONAL_CODECS_PREFIX, 122 Settings.Global.BLUETOOTH_A2DP_OPTIONAL_CODECS_ENABLED_PREFIX, 123 Settings.Global.BLUETOOTH_CLASS_OF_DEVICE, 124 Settings.Global.BLUETOOTH_DISABLED_PROFILES, 125 Settings.Global.BLUETOOTH_HEADSET_PRIORITY_PREFIX, 126 Settings.Global.BLUETOOTH_INPUT_DEVICE_PRIORITY_PREFIX, 127 Settings.Global.BLUETOOTH_INTEROPERABILITY_LIST, 128 Settings.Global.BLUETOOTH_MAP_CLIENT_PRIORITY_PREFIX, 129 Settings.Global.BLUETOOTH_MAP_PRIORITY_PREFIX, 130 Settings.Global.BLUETOOTH_PAN_PRIORITY_PREFIX, 131 Settings.Global.BLUETOOTH_PBAP_CLIENT_PRIORITY_PREFIX, 132 Settings.Global.BLUETOOTH_SAP_PRIORITY_PREFIX, 133 Settings.Global.BLUETOOTH_HEARING_AID_PRIORITY_PREFIX, 134 Settings.Global.BOOT_COUNT, 135 Settings.Global.CAPTIVE_PORTAL_FALLBACK_URL, 136 Settings.Global.CAPTIVE_PORTAL_HTTPS_URL, 137 Settings.Global.CAPTIVE_PORTAL_HTTP_URL, 138 Settings.Global.CAPTIVE_PORTAL_MODE, 139 Settings.Global.CAPTIVE_PORTAL_OTHER_FALLBACK_URLS, 140 Settings.Global.CAPTIVE_PORTAL_FALLBACK_PROBE_SPECS, 141 Settings.Global.CAPTIVE_PORTAL_SERVER, 142 Settings.Global.CAPTIVE_PORTAL_USE_HTTPS, 143 Settings.Global.CAPTIVE_PORTAL_USER_AGENT, 144 Settings.Global.CAR_DOCK_SOUND, 145 Settings.Global.CARRIER_APP_WHITELIST, 146 Settings.Global.CARRIER_APP_NAMES, 147 Settings.Global.CAR_UNDOCK_SOUND, 148 Settings.Global.CDMA_CELL_BROADCAST_SMS, 149 Settings.Global.CDMA_ROAMING_MODE, 150 Settings.Global.CDMA_SUBSCRIPTION_MODE, 151 Settings.Global.CELL_ON, 152 Settings.Global.CERT_PIN_UPDATE_CONTENT_URL, 153 Settings.Global.CERT_PIN_UPDATE_METADATA_URL, 154 Settings.Global.COMPATIBILITY_MODE, 155 Settings.Global.CONNECTIVITY_CHANGE_DELAY, 156 Settings.Global.CONNECTIVITY_METRICS_BUFFER_SIZE, 157 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 158 Settings.Global.CONTACT_METADATA_SYNC_ENABLED, 159 Settings.Global.CONVERSATION_ACTIONS_UPDATE_CONTENT_URL, 160 Settings.Global.CONVERSATION_ACTIONS_UPDATE_METADATA_URL, 161 Settings.Global.CONTACTS_DATABASE_WAL_ENABLED, 162 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 163 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 164 Settings.Global.DATABASE_CREATION_BUILDID, 165 Settings.Global.DATABASE_DOWNGRADE_REASON, 166 Settings.Global.DATA_ROAMING, 167 Settings.Global.DATA_STALL_ALARM_AGGRESSIVE_DELAY_IN_MS, 168 Settings.Global.DATA_STALL_ALARM_NON_AGGRESSIVE_DELAY_IN_MS, 169 Settings.Global.DATA_STALL_RECOVERY_ON_BAD_NETWORK, 170 Settings.Global.DEBUG_APP, 171 Settings.Global.DEBUG_VIEW_ATTRIBUTES, 172 Settings.Global.DEBUG_VIEW_ATTRIBUTES_APPLICATION_PACKAGE, 173 Settings.Global.DEFAULT_DNS_SERVER, 174 Settings.Global.DEFAULT_INSTALL_LOCATION, 175 Settings.Global.DEFAULT_RESTRICT_BACKGROUND_DATA, 176 Settings.Global.DESK_DOCK_SOUND, 177 Settings.Global.DESK_UNDOCK_SOUND, 178 Settings.Global.DEVELOPMENT_ENABLE_FREEFORM_WINDOWS_SUPPORT, 179 Settings.Global.DEVELOPMENT_FORCE_DESKTOP_MODE_ON_EXTERNAL_DISPLAYS, 180 Settings.Global.DEVELOPMENT_FORCE_RESIZABLE_ACTIVITIES, 181 Settings.Global.DEVELOPMENT_FORCE_RTL, 182 Settings.Global.DEVELOPMENT_ENABLE_NON_RESIZABLE_MULTI_WINDOW, 183 Settings.Global.DEVELOPMENT_RENDER_SHADOWS_IN_COMPOSITOR, 184 Settings.Global.DEVELOPMENT_WM_DISPLAY_SETTINGS_PATH, 185 Settings.Global.DEVICE_DEMO_MODE, 186 Settings.Global.DEVICE_IDLE_CONSTANTS, 187 Settings.Global.DISABLE_SCREEN_SHARE_PROTECTIONS_FOR_APPS_AND_NOTIFICATIONS, 188 Settings.Global.DISABLE_WINDOW_BLURS, 189 Settings.Global.BATTERY_SAVER_CONSTANTS, 190 Settings.Global.BATTERY_TIP_CONSTANTS, 191 Settings.Global.DEFAULT_SM_DP_PLUS, 192 Settings.Global.DEVICE_NAME, 193 Settings.Global.DEVICE_POLICY_CONSTANTS, 194 Settings.Global.DEVICE_PROVISIONED, 195 Settings.Global.BYPASS_DEVICE_POLICY_MANAGEMENT_ROLE_QUALIFICATIONS, 196 Settings.Global.DEVICE_PROVISIONING_MOBILE_DATA_ENABLED, 197 Settings.Global.DISK_FREE_CHANGE_REPORTING_THRESHOLD, 198 Settings.Global.DISPLAY_PANEL_LPM, 199 Settings.Global.DISPLAY_SCALING_FORCE, 200 Settings.Global.DISPLAY_SIZE_FORCED, 201 Settings.Global.DNS_RESOLVER_MAX_SAMPLES, 202 Settings.Global.DNS_RESOLVER_MIN_SAMPLES, 203 Settings.Global.DNS_RESOLVER_SAMPLE_VALIDITY_SECONDS, 204 Settings.Global.DNS_RESOLVER_SUCCESS_THRESHOLD_PERCENT, 205 Settings.Global.DOCK_SOUNDS_ENABLED_WHEN_ACCESSIBILITY, 206 Settings.Global.DOWNLOAD_MAX_BYTES_OVER_MOBILE, 207 Settings.Global.DOWNLOAD_RECOMMENDED_MAX_BYTES_OVER_MOBILE, 208 Settings.Global.DROPBOX_AGE_SECONDS, 209 Settings.Global.DROPBOX_MAX_FILES, 210 Settings.Global.DROPBOX_QUOTA_KB, 211 Settings.Global.DROPBOX_QUOTA_PERCENT, 212 Settings.Global.DROPBOX_RESERVE_PERCENT, 213 Settings.Global.DROPBOX_TAG_PREFIX, 214 Settings.Global.EMERGENCY_AFFORDANCE_NEEDED, 215 Settings.Global.EMERGENCY_GESTURE_POWER_BUTTON_COOLDOWN_PERIOD_MS, 216 Settings.Global.EMERGENCY_GESTURE_TAP_DETECTION_MIN_TIME_MS, 217 Settings.Global.EMERGENCY_GESTURE_STICKY_UI_MAX_DURATION_MILLIS, 218 Settings.Global.EMULATE_DISPLAY_CUTOUT, 219 Settings.Global.ENABLE_ACCESSIBILITY_GLOBAL_GESTURE_ENABLED, 220 Settings.Global.ENABLE_CACHE_QUOTA_CALCULATION, 221 Settings.Global.ENABLE_CELLULAR_ON_BOOT, 222 Settings.Global.ENABLE_DELETION_HELPER_NO_THRESHOLD_TOGGLE, 223 Settings.Global.ENABLE_DISKSTATS_LOGGING, 224 Settings.Global.ENABLE_EPHEMERAL_FEATURE, 225 Settings.Global.DYNAMIC_POWER_SAVINGS_ENABLED, 226 Settings.Global.DYNAMIC_POWER_SAVINGS_DISABLE_THRESHOLD, 227 Settings.Global.SMART_REPLIES_IN_NOTIFICATIONS_FLAGS, 228 Settings.Global.SMART_SUGGESTIONS_IN_NOTIFICATIONS_FLAGS, 229 Settings.Global.STYLUS_EVER_USED, 230 Settings.Global.ENABLE_ADB_INCREMENTAL_INSTALL_DEFAULT, 231 Settings.Global.ENABLE_MULTI_SLOT_TIMEOUT_MILLIS, 232 Settings.Global.ENHANCED_4G_MODE_ENABLED, 233 Settings.Global.ENABLE_16K_PAGES, // Added for 16K developer option 234 Settings.Global.EPHEMERAL_COOKIE_MAX_SIZE_BYTES, 235 Settings.Global.ERROR_KERNEL_LOG_PREFIX, 236 Settings.Global.ERROR_LOGCAT_PREFIX, 237 Settings.Global.EUICC_PROVISIONED, 238 Settings.Global.EUICC_SUPPORTED_COUNTRIES, 239 Settings.Global.EUICC_UNSUPPORTED_COUNTRIES, 240 Settings.Global.EUICC_FACTORY_RESET_TIMEOUT_MILLIS, 241 Settings.Global.EUICC_REMOVING_INVISIBLE_PROFILES_TIMEOUT_MILLIS, 242 Settings.Global.EUICC_SWITCH_SLOT_TIMEOUT_MILLIS, 243 Settings.Global.FANCY_IME_ANIMATIONS, 244 Settings.Global.ONE_HANDED_KEYGUARD_SIDE, 245 Settings.Global.FORCE_ALLOW_ON_EXTERNAL, 246 Settings.Global.FORCED_APP_STANDBY_FOR_SMALL_BATTERY_ENABLED, 247 Settings.Global.WIFI_ON_WHEN_PROXY_DISCONNECTED, 248 Settings.Global.FSTRIM_MANDATORY_INTERVAL, 249 Settings.Global.FOREGROUND_SERVICE_STARTS_LOGGING_ENABLED, 250 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 251 Settings.Global.GLOBAL_HTTP_PROXY_HOST, 252 Settings.Global.GLOBAL_HTTP_PROXY_PAC, 253 Settings.Global.GLOBAL_HTTP_PROXY_PORT, 254 Settings.Global.GNSS_HAL_LOCATION_REQUEST_DURATION_MILLIS, 255 Settings.Global.GNSS_SATELLITE_BLOCKLIST, 256 Settings.Global.GPRS_REGISTER_CHECK_PERIOD_MS, 257 Settings.Global.HEADS_UP_NOTIFICATIONS_ENABLED, 258 Settings.Global.HIDDEN_API_POLICY, 259 Settings.Global.FORCE_NON_DEBUGGABLE_FINAL_BUILD_FOR_COMPAT, 260 Settings.Global.HIDE_ERROR_DIALOGS, 261 Settings.Global.HTTP_PROXY, 262 HYBRID_SYSUI_BATTERY_WARNING_FLAGS, 263 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 264 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 265 Settings.Global.INSTANT_APP_DEXOPT_ENABLED, 266 Settings.Global.INTENT_FIREWALL_UPDATE_CONTENT_URL, 267 Settings.Global.INTENT_FIREWALL_UPDATE_METADATA_URL, 268 Settings.Global.KEEP_PROFILE_IN_BACKGROUND, 269 Settings.Global.KERNEL_CPU_THREAD_READER, 270 Settings.Global.LANG_ID_UPDATE_CONTENT_URL, 271 Settings.Global.LANG_ID_UPDATE_METADATA_URL, 272 Settings.Global.LOCATION_BACKGROUND_THROTTLE_INTERVAL_MS, 273 Settings.Global.LOCATION_BACKGROUND_THROTTLE_PROXIMITY_ALERT_INTERVAL_MS, 274 Settings.Global.LOCATION_BACKGROUND_THROTTLE_PACKAGE_WHITELIST, 275 Settings.Global.LOCATION_ENABLE_STATIONARY_THROTTLE, 276 Settings.Global.LOCATION_SETTINGS_LINK_TO_PERMISSIONS_ENABLED, 277 Settings.Global.LOCK_SOUND, 278 Settings.Global.LOOPER_STATS, 279 Settings.Global.LOW_BATTERY_SOUND, 280 Settings.Global.LOW_BATTERY_SOUND_TIMEOUT, 281 Settings.Global.LOW_POWER_MODE, 282 Settings.Global.EXTRA_LOW_POWER_MODE, 283 Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL_MAX, 284 Settings.Global.LOW_POWER_MODE_STICKY, 285 Settings.Global.LOW_POWER_MODE_SUGGESTION_PARAMS, 286 Settings.Global.LOW_POWER_STANDBY_ACTIVE_DURING_MAINTENANCE, 287 Settings.Global.LOW_POWER_STANDBY_ENABLED, 288 Settings.Global.LTE_SERVICE_FORCED, 289 Settings.Global.LID_BEHAVIOR, 290 Settings.Global.MAX_ERROR_BYTES_PREFIX, 291 Settings.Global.MAX_NOTIFICATION_ENQUEUE_RATE, 292 Settings.Global.MAX_SOUND_TRIGGER_DETECTION_SERVICE_OPS_PER_DAY, 293 Settings.Global.MAXIMUM_OBSCURING_OPACITY_FOR_TOUCH, 294 Settings.Global.MDC_INITIAL_MAX_RETRY, 295 Settings.Global.MHL_INPUT_SWITCHING_ENABLED, 296 Settings.Global.MHL_POWER_CHARGE_ENABLED, 297 Settings.Global.MIN_DURATION_BETWEEN_RECOVERY_STEPS_IN_MS, 298 Settings.Global.MOBILE_DATA, // Candidate for backup? 299 Settings.Global.MOBILE_DATA_ALWAYS_ON, 300 Settings.Global.DSRM_DURATION_MILLIS, 301 Settings.Global.DSRM_ENABLED_ACTIONS, 302 Settings.Global.MODE_RINGER, 303 Settings.Global.MUTE_ALARM_STREAM_WITH_RINGER_MODE, 304 Settings.Global.MULTI_SIM_DATA_CALL_SUBSCRIPTION, 305 Settings.Global.MULTI_SIM_SMS_PROMPT, 306 Settings.Global.MULTI_SIM_SMS_SUBSCRIPTION, 307 Settings.Global.MULTI_SIM_VOICE_CALL_SUBSCRIPTION, 308 Settings.Global.MULTI_SIM_VOICE_PROMPT, 309 Settings.Global.NATIVE_FLAGS_HEALTH_CHECK_ENABLED, 310 Settings.Global.NETSTATS_DEV_BUCKET_DURATION, 311 Settings.Global.NETSTATS_DEV_DELETE_AGE, 312 Settings.Global.NETSTATS_DEV_PERSIST_BYTES, 313 Settings.Global.NETSTATS_DEV_ROTATE_AGE, 314 Settings.Global.NETSTATS_ENABLED, 315 Settings.Global.NETSTATS_GLOBAL_ALERT_BYTES, 316 Settings.Global.NETSTATS_POLL_INTERVAL, 317 Settings.Global.NETSTATS_SAMPLE_ENABLED, 318 Settings.Global.NETSTATS_AUGMENT_ENABLED, 319 Settings.Global.NETSTATS_COMBINE_SUBTYPE_ENABLED, 320 Settings.Global.NETSTATS_TIME_CACHE_MAX_AGE, 321 Settings.Global.NETSTATS_UID_BUCKET_DURATION, 322 Settings.Global.NETSTATS_UID_DELETE_AGE, 323 Settings.Global.NETSTATS_UID_PERSIST_BYTES, 324 Settings.Global.NETSTATS_UID_ROTATE_AGE, 325 Settings.Global.NETSTATS_UID_TAG_BUCKET_DURATION, 326 Settings.Global.NETSTATS_UID_TAG_DELETE_AGE, 327 Settings.Global.NETSTATS_UID_TAG_PERSIST_BYTES, 328 Settings.Global.NETSTATS_UID_TAG_ROTATE_AGE, 329 Settings.Global.NETPOLICY_QUOTA_ENABLED, 330 Settings.Global.NETPOLICY_QUOTA_UNLIMITED, 331 Settings.Global.NETPOLICY_QUOTA_LIMITED, 332 Settings.Global.NETPOLICY_QUOTA_FRAC_JOBS, 333 Settings.Global.NETPOLICY_QUOTA_FRAC_MULTIPATH, 334 Settings.Global.NETPOLICY_OVERRIDE_ENABLED, 335 Settings.Global.NETWORK_DEFAULT_DAILY_MULTIPATH_QUOTA_BYTES, 336 Settings.Global.NETWORK_METERED_MULTIPATH_PREFERENCE, 337 Settings.Global.NETWORK_WATCHLIST_LAST_REPORT_TIME, 338 Settings.Global.NETWORK_PREFERENCE, 339 Settings.Global.NETWORK_RECOMMENDATIONS_PACKAGE, 340 Settings.Global.NETWORK_SCORER_APP, 341 Settings.Global.NETWORK_SCORING_PROVISIONED, 342 Settings.Global.NETWORK_SCORING_UI_ENABLED, 343 Settings.Global.NETWORK_SWITCH_NOTIFICATION_DAILY_LIMIT, 344 Settings.Global.NETWORK_SWITCH_NOTIFICATION_RATE_LIMIT_MILLIS, 345 Settings.Global.NETWORK_WATCHLIST_ENABLED, 346 Settings.Global.NEW_CONTACT_AGGREGATOR, 347 Settings.Global.NIGHT_DISPLAY_FORCED_AUTO_MODE_AVAILABLE, 348 Settings.Global.NITZ_NETWORK_DISCONNECT_RETENTION, 349 Settings.Global.NITZ_UPDATE_DIFF, 350 Settings.Global.NITZ_UPDATE_SPACING, 351 Settings.Global.NOTIFICATION_SNOOZE_OPTIONS, 352 Settings.Global.NOTIFICATION_FEEDBACK_ENABLED, 353 Settings.Global.NR_NSA_TRACKING_SCREEN_OFF_MODE, 354 Settings.Global.NTP_SERVER, 355 Settings.Global.NTP_TIMEOUT, 356 Settings.Global.OTA_DISABLE_AUTOMATIC_UPDATE, 357 Settings.Global.OVERLAY_DISPLAY_DEVICES, 358 Settings.Global.PAC_CHANGE_DELAY, 359 Settings.Global.PACKAGE_STREAMING_VERIFIER_TIMEOUT, 360 Settings.Global.PACKAGE_VERIFIER_DEFAULT_RESPONSE, 361 Settings.Global.PACKAGE_VERIFIER_INCLUDE_ADB, 362 Settings.Global.PACKAGE_VERIFIER_SETTING_VISIBLE, 363 Settings.Global.PACKAGE_VERIFIER_TIMEOUT, 364 Settings.Global.PDP_WATCHDOG_ERROR_POLL_COUNT, 365 Settings.Global.PDP_WATCHDOG_ERROR_POLL_INTERVAL_MS, 366 Settings.Global.PDP_WATCHDOG_LONG_POLL_INTERVAL_MS, 367 Settings.Global.PDP_WATCHDOG_MAX_PDP_RESET_FAIL_COUNT, 368 Settings.Global.PDP_WATCHDOG_POLL_INTERVAL_MS, 369 Settings.Global.PDP_WATCHDOG_TRIGGER_PACKET_COUNT, 370 Settings.Global.PEOPLE_SPACE_CONVERSATION_TYPE, 371 Settings.Global.POLICY_CONTROL, 372 Settings.Global.POWER_BUTTON_SUPPRESSION_DELAY_AFTER_GESTURE_WAKE, 373 Settings.Global.POWER_MANAGER_CONSTANTS, 374 Settings.Global.PREFERRED_NETWORK_MODE, 375 Settings.Global.PRIVATE_DNS_DEFAULT_MODE, 376 Settings.Global.PROVISIONING_APN_ALARM_DELAY_IN_MS, 377 Settings.Global.RADIO_BLUETOOTH, 378 Settings.Global.RADIO_CELL, 379 Settings.Global.RADIO_NFC, 380 Settings.Global.RADIO_WIFI, 381 Settings.Global.RADIO_WIMAX, 382 Settings.Global.RADIO_UWB, 383 Settings.Global.RECOMMENDED_NETWORK_EVALUATOR_CACHE_EXPIRY_MS, 384 Settings.Global.READ_EXTERNAL_STORAGE_ENFORCED_DEFAULT, 385 Settings.Global.RESTRICTED_NETWORKING_MODE, 386 Settings.Global.REQUIRE_PASSWORD_TO_DECRYPT, 387 Settings.Global.SAFE_BOOT_DISALLOWED, 388 Settings.Global.SECURE_FRP_MODE, 389 Settings.Global.SELINUX_STATUS, 390 Settings.Global.SELINUX_UPDATE_CONTENT_URL, 391 Settings.Global.SELINUX_UPDATE_METADATA_URL, 392 Settings.Global.SEND_ACTION_APP_ERROR, 393 Settings.Global.SET_GLOBAL_HTTP_PROXY, 394 Settings.Global.SET_INSTALL_LOCATION, 395 Settings.Global.SETUP_PREPAID_DATA_SERVICE_URL, 396 Settings.Global.SETUP_PREPAID_DETECTION_REDIR_HOST, 397 Settings.Global.SETUP_PREPAID_DETECTION_TARGET_URL, 398 Settings.Global.SETTINGS_USE_EXTERNAL_PROVIDER_API, 399 Settings.Global.SETTINGS_USE_PSD_API, 400 Settings.Global.SHORTCUT_MANAGER_CONSTANTS, 401 Settings.Global.SHOW_FIRST_CRASH_DIALOG, 402 Settings.Global.SHOW_HIDDEN_LAUNCHER_ICON_APPS_ENABLED, 403 Settings.Global.SHOW_MUTE_IN_CRASH_DIALOG, 404 Settings.Global.SHOW_NEW_APP_INSTALLED_NOTIFICATION_ENABLED, 405 Settings.Global.SHOW_NOTIFICATION_CHANNEL_WARNINGS, 406 Settings.Global.SHOW_PEOPLE_SPACE, 407 Settings.Global.SHOW_NEW_NOTIF_DISMISS, 408 Settings.Global.SHOW_RESTART_IN_CRASH_DIALOG, 409 Settings.Global.SHOW_TEMPERATURE_WARNING, 410 Settings.Global.SHOW_USB_TEMPERATURE_ALARM, 411 Settings.Global.SIGNED_CONFIG_VERSION, 412 Settings.Global.SMART_SELECTION_UPDATE_CONTENT_URL, 413 Settings.Global.SMART_SELECTION_UPDATE_METADATA_URL, 414 Settings.Global.SMS_OUTGOING_CHECK_INTERVAL_MS, 415 Settings.Global.SMS_OUTGOING_CHECK_MAX_COUNT, 416 Settings.Global.SMS_SHORT_CODE_CONFIRMATION, 417 Settings.Global.SMS_SHORT_CODE_RULE, 418 Settings.Global.SMS_SHORT_CODES_UPDATE_CONTENT_URL, 419 Settings.Global.SMS_SHORT_CODES_UPDATE_METADATA_URL, 420 Settings.Global.SOUND_TRIGGER_DETECTION_SERVICE_OP_TIMEOUT, 421 Settings.Global.SPEED_LABEL_CACHE_EVICTION_AGE_MILLIS, 422 Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS, 423 Settings.Global.STORAGE_BENCHMARK_INTERVAL, 424 Settings.Global.STORAGE_SETTINGS_CLOBBER_THRESHOLD, 425 Settings.Global.SYNC_MANAGER_CONSTANTS, 426 Settings.Global.SYNC_MAX_RETRY_DELAY_IN_SECONDS, 427 Settings.Global.SYS_FREE_STORAGE_LOG_INTERVAL, 428 Settings.Global.SYS_STORAGE_CACHE_PERCENTAGE, 429 Settings.Global.SYS_STORAGE_FULL_THRESHOLD_BYTES, 430 Settings.Global.SYS_STORAGE_THRESHOLD_MAX_BYTES, 431 Settings.Global.SYS_STORAGE_THRESHOLD_PERCENTAGE, 432 Settings.Global.SYS_UIDCPUPOWER, 433 Settings.Global.SYS_TRACED, 434 Settings.Global.FPS_DEVISOR, 435 Settings.Global.TCP_DEFAULT_INIT_RWND, 436 Settings.Global.TETHER_DUN_APN, 437 Settings.Global.TETHER_DUN_REQUIRED, 438 Settings.Global.TETHER_OFFLOAD_DISABLED, 439 Settings.Global.TETHER_SUPPORTED, 440 Settings.Global.TETHER_ENABLE_LEGACY_DHCP_SERVER, 441 Settings.Global.TEXT_CLASSIFIER_CONSTANTS, 442 Settings.Global.TEXT_CLASSIFIER_ACTION_MODEL_PARAMS, 443 Settings.Global.THEATER_MODE_ON, 444 Settings.Global.TIME_ONLY_MODE_CONSTANTS, 445 Settings.Global.TIME_REMAINING_ESTIMATE_MILLIS, 446 Settings.Global.TIME_REMAINING_ESTIMATE_BASED_ON_USAGE, 447 Settings.Global.TRANSITION_ANIMATION_SCALE, 448 Settings.Global.TRUSTED_SOUND, 449 Settings.Global.TZINFO_UPDATE_CONTENT_URL, 450 Settings.Global.TZINFO_UPDATE_METADATA_URL, 451 Settings.Global.INSTALLED_INSTANT_APP_MIN_CACHE_PERIOD, 452 Settings.Global.INSTALLED_INSTANT_APP_MAX_CACHE_PERIOD, 453 Settings.Global.UNINSTALLED_INSTANT_APP_MIN_CACHE_PERIOD, 454 Settings.Global.UNINSTALLED_INSTANT_APP_MAX_CACHE_PERIOD, 455 Settings.Global.UNUSED_STATIC_SHARED_LIB_MIN_CACHE_PERIOD, 456 Settings.Global.UNGAZE_SLEEP_ENABLED, 457 Settings.Global.UNLOCK_SOUND, 458 Settings.Global.USE_GOOGLE_MAIL, 459 Settings.Global.USER_ABSENT_RADIOS_OFF_FOR_SMALL_BATTERY_ENABLED, 460 Settings.Global.USER_ABSENT_TOUCH_OFF_FOR_SMALL_BATTERY_ENABLED, 461 Settings.Global.VT_IMS_ENABLED, 462 Settings.Global.WAIT_FOR_DEBUGGER, 463 Settings.Global.ENABLE_GPU_DEBUG_LAYERS, 464 Settings.Global.GPU_DEBUG_APP, 465 Settings.Global.GPU_DEBUG_LAYERS, 466 Settings.Global.GPU_DEBUG_LAYERS_GLES, 467 Settings.Global.ANGLE_DEBUG_PACKAGE, 468 Settings.Global.ANGLE_GL_DRIVER_ALL_ANGLE, 469 Settings.Global.ANGLE_GL_DRIVER_SELECTION_PKGS, 470 Settings.Global.ANGLE_GL_DRIVER_SELECTION_VALUES, 471 Settings.Global.ANGLE_EGL_FEATURES, 472 Settings.Global.UPDATABLE_DRIVER_ALL_APPS, 473 Settings.Global.UPDATABLE_DRIVER_PRODUCTION_OPT_IN_APPS, 474 Settings.Global.UPDATABLE_DRIVER_PRERELEASE_OPT_IN_APPS, 475 Settings.Global.UPDATABLE_DRIVER_PRODUCTION_OPT_OUT_APPS, 476 Settings.Global.UPDATABLE_DRIVER_PRODUCTION_DENYLISTS, 477 Settings.Global.UPDATABLE_DRIVER_PRODUCTION_DENYLIST, 478 Settings.Global.UPDATABLE_DRIVER_PRODUCTION_ALLOWLIST, 479 Settings.Global.UPDATABLE_DRIVER_SPHAL_LIBRARIES, 480 Settings.Global.UWB_ENABLED, 481 Settings.Global.SHOW_ANGLE_IN_USE_DIALOG_BOX, 482 Settings.Global.GPU_DEBUG_LAYER_APP, 483 Settings.Global.ENABLE_GNSS_RAW_MEAS_FULL_TRACKING, 484 Settings.Global.INSTALL_CARRIER_APP_NOTIFICATION_PERSISTENT, 485 Settings.Global.INSTALL_CARRIER_APP_NOTIFICATION_SLEEP_MILLIS, 486 Settings.Global.WARNING_TEMPERATURE, 487 Settings.Global.WEBVIEW_DATA_REDUCTION_PROXY_KEY, 488 Settings.Global.WEBVIEW_MULTIPROCESS, 489 Settings.Global.WEBVIEW_PROVIDER, 490 Settings.Global.WFC_IMS_ENABLED, 491 Settings.Global.WFC_IMS_MODE, 492 Settings.Global.WFC_IMS_ROAMING_ENABLED, 493 Settings.Global.WFC_IMS_ROAMING_MODE, 494 Settings.Global.WIFI_ALWAYS_REQUESTED, 495 Settings.Global.WIFI_BADGING_THRESHOLDS, 496 Settings.Global.WIFI_BOUNCE_DELAY_OVERRIDE_MS, 497 Settings.Global.WIFI_COUNTRY_CODE, 498 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 499 Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON, 500 Settings.Global.WIFI_DISPLAY_ON, 501 Settings.Global.WIFI_DISPLAY_WPS_CONFIG, 502 Settings.Global.WIFI_ENHANCED_AUTO_JOIN, 503 Settings.Global.WIFI_EPHEMERAL_OUT_OF_RANGE_TIMEOUT_MS, 504 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 505 Settings.Global.WIFI_FREQUENCY_BAND, 506 Settings.Global.WIFI_IDLE_MS, 507 Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT, 508 Settings.Global.WIFI_MIGRATION_COMPLETED, 509 Settings.Global.WIFI_MOBILE_DATA_TRANSITION_WAKELOCK_TIMEOUT_MS, 510 Settings.Global.WIFI_NETWORK_SHOW_RSSI, 511 Settings.Global.WIFI_NETWORKS_AVAILABLE_REPEAT_DELAY, 512 Settings.Global.WIFI_NUM_OPEN_NETWORKS_KEPT, 513 Settings.Global.WIFI_ON, 514 Settings.Global.WIFI_P2P_DEVICE_NAME, 515 Settings.Global.WIFI_P2P_PENDING_FACTORY_RESET, 516 Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 517 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 518 Settings.Global.WIFI_SCAN_THROTTLE_ENABLED, 519 Settings.Global.WIFI_SCORE_PARAMS, 520 Settings.Global.WIFI_SLEEP_POLICY, 521 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 522 Settings.Global.WIFI_VERBOSE_LOGGING_ENABLED, 523 Settings.Global.WIFI_WATCHDOG_ON, 524 Settings.Global.WIMAX_NETWORKS_AVAILABLE_NOTIFICATION_ON, 525 Settings.Global.CHARGING_STARTED_SOUND, 526 Settings.Global.WIRELESS_CHARGING_STARTED_SOUND, 527 Settings.Global.WINDOW_ANIMATION_SCALE, 528 Settings.Global.WTF_IS_FATAL, 529 Settings.Global.ZEN_MODE, 530 Settings.Global.ZEN_MODE_CONFIG_ETAG, 531 Settings.Global.ZEN_MODE_RINGER_LEVEL, 532 Settings.Global.ZRAM_ENABLED, 533 Settings.Global.OVERRIDE_SETTINGS_PROVIDER_RESTORE_ANY_VERSION, 534 Settings.Global.CHAINED_BATTERY_ATTRIBUTION_ENABLED, 535 Settings.Global.HIDDEN_API_BLACKLIST_EXEMPTIONS, 536 Settings.Global.BACKUP_AGENT_TIMEOUT_PARAMETERS, 537 Settings.Global.APPOP_HISTORY_PARAMETERS, 538 Settings.Global.APPOP_HISTORY_MODE, 539 Settings.Global.APPOP_HISTORY_INTERVAL_MULTIPLIER, 540 Settings.Global.APPOP_HISTORY_BASE_INTERVAL_MILLIS, 541 Settings.Global.AUTO_REVOKE_PARAMETERS, 542 Settings.Global.ENABLE_RADIO_BUG_DETECTION, 543 Settings.Global.REPAIR_MODE_ACTIVE, 544 Settings.Global.RADIO_BUG_WAKELOCK_TIMEOUT_COUNT_THRESHOLD, 545 Settings.Global.RADIO_BUG_SYSTEM_ERROR_COUNT_THRESHOLD, 546 Settings.Global.ENABLED_SUBSCRIPTION_FOR_SLOT, 547 Settings.Global.MODEM_STACK_ENABLED_FOR_SLOT, 548 Settings.Global.POWER_BUTTON_SHORT_PRESS, 549 Settings.Global.POWER_BUTTON_DOUBLE_PRESS, 550 Settings.Global.POWER_BUTTON_TRIPLE_PRESS, 551 Settings.Global.POWER_BUTTON_VERY_LONG_PRESS, 552 Settings.Global.STEM_PRIMARY_BUTTON_SHORT_PRESS, 553 Settings.Global.STEM_PRIMARY_BUTTON_DOUBLE_PRESS, 554 Settings.Global.STEM_PRIMARY_BUTTON_TRIPLE_PRESS, 555 Settings.Global.STEM_PRIMARY_BUTTON_LONG_PRESS, 556 Settings.Global.SHOW_MEDIA_ON_QUICK_SETTINGS, // Temporary for R beta 557 Settings.Global.INTEGRITY_CHECK_INCLUDES_RULE_PROVIDER, 558 Settings.Global.CACHED_APPS_FREEZER_ENABLED, 559 Settings.Global.APP_INTEGRITY_VERIFICATION_TIMEOUT, 560 Settings.Global.KEY_CHORD_POWER_VOLUME_UP, 561 Settings.Global.CLOCKWORK_HOME_READY, 562 Settings.Global.WATCHDOG_TIMEOUT_MILLIS, 563 Settings.Global.MANAGED_PROVISIONING_DEFER_PROVISIONING_TO_ROLE_HOLDER, 564 Settings.Global.REVIEW_PERMISSIONS_NOTIFICATION_STATE, 565 Settings.Global.ENABLE_BACK_ANIMATION, // Temporary for T, dev option only 566 Settings.Global.Wearable.COMBINED_LOCATION_ENABLE, 567 Settings.Global.Wearable.HAS_PAY_TOKENS, 568 Settings.Global.Wearable.GMS_CHECKIN_TIMEOUT_MIN, 569 Settings.Global.Wearable.HOTWORD_DETECTION_ENABLED, 570 Settings.Global.Wearable.DEFAULT_VIBRATION, 571 Settings.Global.Wearable.OBTAIN_PAIRED_DEVICE_LOCATION, 572 Settings.Global.Wearable.PHONE_PLAY_STORE_AVAILABILITY, 573 Settings.Global.Wearable.BUG_REPORT, 574 Settings.Global.Wearable.SMART_ILLUMINATE_ENABLED, 575 Settings.Global.Wearable.AUTO_WIFI, 576 Settings.Global.Wearable.WIFI_POWER_SAVE, 577 Settings.Global.Wearable.ALT_BYPASS_WIFI_REQUIREMENT_TIME_MILLIS, 578 Settings.Global.Wearable.SETUP_SKIPPED, 579 Settings.Global.Wearable.LAST_CALL_FORWARD_ACTION, 580 Settings.Global.Wearable.STEM_1_TYPE, 581 Settings.Global.Wearable.STEM_1_DATA, 582 Settings.Global.Wearable.STEM_1_DEFAULT_DATA, 583 Settings.Global.Wearable.STEM_2_TYPE, 584 Settings.Global.Wearable.STEM_2_DATA, 585 Settings.Global.Wearable.STEM_2_DEFAULT_DATA, 586 Settings.Global.Wearable.STEM_3_TYPE, 587 Settings.Global.Wearable.STEM_3_DATA, 588 Settings.Global.Wearable.STEM_3_DEFAULT_DATA, 589 Settings.Global.Wearable.WEAR_OS_VERSION_STRING, 590 Settings.Global.Wearable.SIDE_BUTTON, 591 Settings.Global.Wearable.ANDROID_WEAR_VERSION, 592 Settings.Global.Wearable.SYSTEM_CAPABILITIES, 593 Settings.Global.Wearable.SYSTEM_EDITION, 594 Settings.Global.Wearable.WEAR_PLATFORM_MR_NUMBER, 595 Settings.Global.Wearable.MOBILE_SIGNAL_DETECTOR, 596 Settings.Global.Wearable.AMBIENT_LOW_BIT_ENABLED_DEV, 597 Settings.Global.Wearable.AMBIENT_TILT_TO_BRIGHT, 598 Settings.Global.Wearable.BATTERY_SAVER_MODE, 599 Settings.Global.Wearable.DECOMPOSABLE_WATCHFACE, 600 Settings.Global.Wearable.AMBIENT_FORCE_WHEN_DOCKED, 601 Settings.Global.Wearable.AMBIENT_LOW_BIT_ENABLED, 602 Settings.Global.Wearable.AMBIENT_PLUGGED_TIMEOUT_MIN, 603 Settings.Global.Wearable.PAIRED_DEVICE_OS_TYPE, 604 Settings.Global.Wearable.COMPANION_BLE_ROLE, 605 Settings.Global.Wearable.COMPANION_NAME, 606 Settings.Global.Wearable.COMPANION_APP_NAME, 607 Settings.Global.Wearable.COMPANION_OS_VERSION, 608 Settings.Global.Wearable.ENABLE_ALL_LANGUAGES, 609 Settings.Global.Wearable.SETUP_LOCALE, 610 Settings.Global.Wearable.OEM_SETUP_VERSION, 611 Settings.Global.Wearable.OEM_SETUP_COMPLETED_STATUS, 612 Settings.Global.Wearable.MASTER_GESTURES_ENABLED, 613 Settings.Global.Wearable.UNGAZE_ENABLED, 614 Settings.Global.Wearable.BURN_IN_PROTECTION_ENABLED, 615 Settings.Global.Wearable.WRIST_ORIENTATION_MODE, 616 Settings.Global.Wearable.CLOCKWORK_SYSUI_PACKAGE, 617 Settings.Global.Wearable.CLOCKWORK_SYSUI_MAIN_ACTIVITY, 618 Settings.Global.Wearable.CLOCKWORK_LONG_PRESS_TO_ASSISTANT_ENABLED, 619 Settings.Global.Wearable.WET_MODE_ON, 620 Settings.Global.Wearable.COOLDOWN_MODE_ON, 621 Settings.Global.Wearable.BEDTIME_MODE, 622 Settings.Global.Wearable.BEDTIME_HARD_MODE, 623 Settings.Global.Wearable.VIBRATE_FOR_ACTIVE_UNLOCK, 624 Settings.Global.Wearable.LOCK_SCREEN_STATE, 625 Settings.Global.Wearable.DISABLE_AOD_WHILE_PLUGGED, 626 Settings.Global.Wearable.NETWORK_LOCATION_OPT_IN, 627 Settings.Global.Wearable.CUSTOM_COLOR_FOREGROUND, 628 Settings.Global.Wearable.CUSTOM_COLOR_BACKGROUND, 629 Settings.Global.Wearable.PHONE_SWITCHING_STATUS, 630 Settings.Global.Wearable.TETHER_CONFIG_STATE, 631 Settings.Global.Wearable.PHONE_SWITCHING_SUPPORTED, 632 Settings.Global.Wearable.WEAR_MEDIA_CONTROLS_PACKAGE, 633 Settings.Global.Wearable.WEAR_MEDIA_SESSIONS_PACKAGE, 634 Settings.Global.Wearable.WEAR_POWER_ANOMALY_SERVICE_ENABLED, 635 Settings.Global.Wearable.CONNECTIVITY_KEEP_DATA_ON); 636 637 private static final Set<String> BACKUP_DENY_LIST_SECURE_SETTINGS = 638 newHashSet( 639 Settings.Secure.ACCESSIBILITY_SOFT_KEYBOARD_MODE, 640 Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD, // Deprecated since O. 641 Settings.Secure.ALLOW_PRIMARY_GAIA_ACCOUNT_REMOVAL_FOR_TESTS, 642 Settings.Secure.ALLOWED_GEOLOCATION_ORIGINS, 643 Settings.Secure.ALWAYS_ON_VPN_APP, 644 Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN, 645 Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN_WHITELIST, 646 Settings.Secure.ANDROID_ID, 647 Settings.Secure.ANR_SHOW_BACKGROUND, 648 Settings.Secure.ASSISTANT, 649 Settings.Secure.ASSIST_DISCLOSURE_ENABLED, 650 Settings.Secure.ASSIST_GESTURE_ENABLED, 651 Settings.Secure.ASSIST_GESTURE_SENSITIVITY, 652 Settings.Secure.ASSIST_GESTURE_WAKE_ENABLED, 653 Settings.Secure.ASSIST_GESTURE_SILENCE_ALERTS_ENABLED, 654 Settings.Secure.ASSIST_GESTURE_SETUP_COMPLETE, 655 Settings.Secure.ASSIST_SCREENSHOT_ENABLED, 656 Settings.Secure.ASSIST_STRUCTURE_ENABLED, 657 Settings.Secure.ATTENTIVE_TIMEOUT, 658 Settings.Secure.AUTOFILL_FEATURE_FIELD_CLASSIFICATION, 659 Settings.Secure.AUTOFILL_USER_DATA_MAX_CATEGORY_COUNT, 660 Settings.Secure.AUTOFILL_USER_DATA_MAX_FIELD_CLASSIFICATION_IDS_SIZE, 661 Settings.Secure.AUTOFILL_USER_DATA_MAX_USER_DATA_SIZE, 662 Settings.Secure.AUTOFILL_USER_DATA_MAX_VALUE_LENGTH, 663 Settings.Secure.AUTOFILL_USER_DATA_MIN_VALUE_LENGTH, 664 Settings.Secure.AUTOFILL_SERVICE_SEARCH_URI, 665 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_BYTES_CLEARED, 666 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_ENABLED, 667 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_LAST_RUN, 668 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_TURNED_OFF_BY_POLICY, 669 Settings.Secure.AUDIO_SAFE_CSD_AS_A_FEATURE_ENABLED, // not controllable by user 670 Settings.Secure.BACKUP_AUTO_RESTORE, 671 Settings.Secure.BACKUP_ENABLED, 672 Settings.Secure.BACKUP_PROVISIONED, 673 Settings.Secure.BACKUP_SCHEDULING_ENABLED, 674 Settings.Secure.BACKUP_TRANSPORT, 675 Settings.Secure.CALL_SCREENING_DEFAULT_COMPONENT, 676 Settings.Secure.CAMERA_LIFT_TRIGGER_ENABLED, // Candidate for backup? 677 Settings.Secure.CARRIER_APPS_HANDLED, 678 Settings.Secure.CMAS_ADDITIONAL_BROADCAST_PKG, 679 Settings.Secure.COMPLETED_CATEGORY_PREFIX, 680 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 681 Settings.Secure.CONTENT_CAPTURE_ENABLED, 682 Settings.Secure.CONTEXTUAL_SEARCH_PACKAGE, 683 Settings.Secure.DEFAULT_INPUT_METHOD, 684 Settings.Secure.DEFAULT_DEVICE_INPUT_METHOD, 685 Settings.Secure.DEVICE_PAIRED, 686 Settings.Secure.DIALER_DEFAULT_APPLICATION, 687 Settings.Secure.DISABLED_PRINT_SERVICES, 688 Settings.Secure.DISABLE_SECURE_WINDOWS, 689 Settings.Secure.DISABLED_SYSTEM_INPUT_METHODS, 690 Settings.Secure.DOCKED_CLOCK_FACE, 691 Settings.Secure.DOZE_PULSE_ON_LONG_PRESS, 692 Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION, 693 Settings.Secure.EMERGENCY_GESTURE_UI_SHOWING, 694 Settings.Secure.EMERGENCY_GESTURE_UI_LAST_STARTED_MILLIS, 695 Settings.Secure.ENABLED_INPUT_METHODS, // Intentionally removed in P 696 Settings.Secure.ENABLED_NOTIFICATION_ASSISTANT, 697 Settings.Secure.ENABLED_NOTIFICATION_LISTENERS, 698 Settings.Secure.ENABLED_NOTIFICATION_POLICY_ACCESS_PACKAGES, 699 Settings.Secure.ENABLED_PRINT_SERVICES, 700 Settings.Secure.GLOBAL_ACTIONS_PANEL_AVAILABLE, 701 Settings.Secure.GLOBAL_ACTIONS_PANEL_DEBUG_ENABLED, 702 Settings.Secure.INCALL_BACK_BUTTON_BEHAVIOR, 703 Settings.Secure.INPUT_METHOD_SELECTOR_VISIBILITY, 704 Settings.Secure.INPUT_METHODS_SUBTYPE_HISTORY, 705 Settings.Secure.INSTALL_NON_MARKET_APPS, 706 Settings.Secure.LAST_SETUP_SHOWN, 707 Settings.Secure.LOCATION_CHANGER, 708 Settings.Secure.LOCATION_MODE, 709 Settings.Secure.LOCATION_PERMISSIONS_UPGRADE_TO_Q_MODE, 710 Settings.Secure.LOCK_SCREEN_ALLOW_REMOTE_INPUT, // Candidate? 711 Settings.Secure.LOCK_SCREEN_LOCK_AFTER_TIMEOUT, 712 Settings.Secure.LOCK_TO_APP_EXIT_LOCKED, 713 Settings.Secure.MANAGED_PROFILE_CONTACT_REMOTE_SEARCH, 714 Settings.Secure.MULTI_PRESS_TIMEOUT, 715 Settings.Secure.NFC_PAYMENT_FOREGROUND, 716 Settings.Secure.NIGHT_DISPLAY_ACTIVATED, 717 Settings.Secure.NIGHT_DISPLAY_LAST_ACTIVATED_TIME, 718 Settings.Secure.NUM_ROTATION_SUGGESTIONS_ACCEPTED, 719 Settings.Secure.ODI_CAPTIONS_ENABLED, 720 Settings.Secure.PARENTAL_CONTROL_LAST_UPDATE, 721 Settings.Secure.PAYMENT_SERVICE_SEARCH_URI, 722 Settings.Secure.PRINT_SERVICE_SEARCH_URI, 723 Settings.Secure.SCREENSAVER_DEFAULT_COMPONENT, // Candidate? 724 Settings.Secure.SEARCH_GLOBAL_SEARCH_ACTIVITY, 725 Settings.Secure.SEARCH_MAX_RESULTS_PER_SOURCE, 726 Settings.Secure.SEARCH_MAX_RESULTS_TO_DISPLAY, 727 Settings.Secure.SEARCH_MAX_SHORTCUTS_RETURNED, 728 Settings.Secure.SEARCH_MAX_SOURCE_EVENT_AGE_MILLIS, 729 Settings.Secure.SEARCH_MAX_STAT_AGE_MILLIS, 730 Settings.Secure.SEARCH_MIN_CLICKS_FOR_SOURCE_RANKING, 731 Settings.Secure.SEARCH_MIN_IMPRESSIONS_FOR_SOURCE_RANKING, 732 Settings.Secure.SEARCH_NUM_PROMOTED_SOURCES, 733 Settings.Secure.SEARCH_PER_SOURCE_CONCURRENT_QUERY_LIMIT, 734 Settings.Secure.SEARCH_PREFILL_MILLIS, 735 Settings.Secure.SEARCH_PROMOTED_SOURCE_DEADLINE_MILLIS, 736 Settings.Secure.SEARCH_QUERY_THREAD_CORE_POOL_SIZE, 737 Settings.Secure.SEARCH_QUERY_THREAD_MAX_POOL_SIZE, 738 Settings.Secure.SEARCH_SHORTCUT_REFRESH_CORE_POOL_SIZE, 739 Settings.Secure.SEARCH_SHORTCUT_REFRESH_MAX_POOL_SIZE, 740 Settings.Secure.SEARCH_SOURCE_TIMEOUT_MILLIS, 741 Settings.Secure.SEARCH_THREAD_KEEPALIVE_SECONDS, 742 Settings.Secure.SECURE_FRP_MODE, 743 Settings.Secure.SEARCH_WEB_RESULTS_OVERRIDE_LIMIT, 744 Settings.Secure.SELECTED_INPUT_METHOD_SUBTYPE, 745 Settings.Secure.SELECTED_SPELL_CHECKER, // Intentionally removed in Q 746 Settings.Secure.SELECTED_SPELL_CHECKER_SUBTYPE, // Intentionally removed in Q 747 Settings.Secure.SETTINGS_CLASSNAME, 748 Settings.Secure.SHOW_NOTE_ABOUT_NOTIFICATION_HIDING, // candidate? 749 Settings.Secure.SHOW_ROTATION_SUGGESTIONS, 750 Settings.Secure.SKIP_FIRST_USE_HINTS, // candidate? 751 Settings.Secure.SLEEP_TIMEOUT, 752 Settings.Secure.SMS_DEFAULT_APPLICATION, 753 Settings.Secure.SPELL_CHECKER_ENABLED, // Intentionally removed in Q 754 Settings.Secure.TRUST_AGENTS_INITIALIZED, 755 Settings.Secure.KNOWN_TRUST_AGENTS_INITIALIZED, 756 Settings.Secure.TV_APP_USES_NON_SYSTEM_INPUTS, 757 Settings.Secure.TV_INPUT_CUSTOM_LABELS, 758 Settings.Secure.TV_INPUT_HIDDEN_INPUTS, 759 Settings.Secure.TV_USER_SETUP_COMPLETE, 760 Settings.Secure.UNKNOWN_SOURCES_DEFAULT_REVERSED, 761 Settings.Secure.UNSAFE_VOLUME_MUSIC_ACTIVE_MS, 762 Settings.Secure.USB_AUDIO_AUTOMATIC_ROUTING_DISABLED, 763 Settings.Secure.USER_SETUP_COMPLETE, 764 Settings.Secure.USER_SETUP_PERSONALIZATION_STATE, 765 Settings.Secure.VOICE_INTERACTION_SERVICE, 766 Settings.Secure.VOICE_RECOGNITION_SERVICE, 767 Settings.Secure.INSTANT_APPS_ENABLED, 768 Settings.Secure.BACKUP_MANAGER_CONSTANTS, 769 Settings.Secure.BACKUP_LOCAL_TRANSPORT_PARAMETERS, 770 Settings.Secure.KEYGUARD_SLICE_URI, 771 Settings.Secure.PARENTAL_CONTROL_ENABLED, 772 Settings.Secure.PARENTAL_CONTROL_REDIRECT_URL, 773 Settings.Secure.BLUETOOTH_ON_WHILE_DRIVING, 774 Settings.Secure.LOW_POWER_MANUAL_ACTIVATION_COUNT, 775 Settings.Secure.SUPPRESS_AUTO_BATTERY_SAVER_SUGGESTION, 776 Settings.Secure.PACKAGES_TO_CLEAR_DATA_BEFORE_FULL_RESTORE, 777 Settings.Secure.FLASHLIGHT_AVAILABLE, 778 Settings.Secure.FLASHLIGHT_ENABLED, 779 Settings.Secure.CROSS_PROFILE_CALENDAR_ENABLED, 780 Settings.Secure.LOCATION_ACCESS_CHECK_INTERVAL_MILLIS, 781 Settings.Secure.LOCATION_ACCESS_CHECK_DELAY_MILLIS, 782 Settings.Secure.BIOMETRIC_DEBUG_ENABLED, 783 Settings.Secure.FACE_UNLOCK_ATTENTION_REQUIRED, 784 Settings.Secure.FACE_UNLOCK_DIVERSITY_REQUIRED, 785 Settings.Secure.MANAGED_PROVISIONING_DPC_DOWNLOADED, 786 Settings.Secure.AWARE_ENABLED, 787 Settings.Secure.SKIP_GESTURE, 788 Settings.Secure.SILENCE_GESTURE, 789 Settings.Secure.DOZE_WAKE_LOCK_SCREEN_GESTURE, 790 Settings.Secure.DOZE_WAKE_DISPLAY_GESTURE, 791 Settings.Secure.DOZE_QUICK_PICKUP_GESTURE, 792 Settings.Secure.FACE_UNLOCK_RE_ENROLL, 793 Settings.Secure.TAP_GESTURE, 794 Settings.Secure.NEARBY_SHARING_COMPONENT, // not user configurable 795 Settings.Secure.ACCESSIBILITY_SHORTCUT_TARGET_MAGNIFICATION_CONTROLLER, 796 Settings.Secure.SUPPRESS_DOZE, 797 Settings.Secure.REDUCE_BRIGHT_COLORS_ACTIVATED, 798 Settings.Secure.ACCESSIBILITY_SHOW_WINDOW_MAGNIFICATION_PROMPT, 799 Settings.Secure.ACCESSIBILITY_FLOATING_MENU_MIGRATION_TOOLTIP_PROMPT, 800 Settings.Secure.UI_TRANSLATION_ENABLED, 801 Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_EDGE_HAPTIC_ENABLED, 802 Settings.Secure.DND_CONFIGS_MIGRATED, 803 Settings.Secure.NAVIGATION_MODE_RESTORE, 804 Settings.Secure.V_TO_U_RESTORE_ALLOWLIST, 805 Settings.Secure.V_TO_U_RESTORE_DENYLIST); 806 807 @Test systemSettingsBackedUpOrDenied()808 public void systemSettingsBackedUpOrDenied() { 809 checkSettingsBackedUpOrDenied( 810 getCandidateSettings(Settings.System.class), 811 newHashSet(SystemSettings.SETTINGS_TO_BACKUP), 812 getBackUpDenyListSystemSettings()); 813 } 814 815 @Test globalSettingsBackedUpOrDenied()816 public void globalSettingsBackedUpOrDenied() { 817 Set<String> candidateSettings = getCandidateSettings(Settings.Global.class); 818 candidateSettings.addAll(getCandidateSettings(Settings.Global.Wearable.class)); 819 checkSettingsBackedUpOrDenied( 820 candidateSettings, 821 newHashSet(GlobalSettings.SETTINGS_TO_BACKUP), 822 BACKUP_DENY_LIST_GLOBAL_SETTINGS); 823 } 824 825 @Test secureSettingsBackedUpOrDenied()826 public void secureSettingsBackedUpOrDenied() { 827 // List of settings that were not added to either SETTINGS_TO_BACKUP or 828 // BACKUP_DENY_LIST_SECURE_SETTINGS while this test was suppressed in 829 // the last two years. Settings in this list are temporarily allowed to 830 // not be explicitly listed as backed up or denied so we can re-enable 831 // this test. 832 // 833 // DO NOT ADD NEW SETTINGS TO THIS LIST! 834 Set<String> settingsNotBackedUpOrDeniedTemporaryAllowList = 835 newHashSet( 836 Settings.Secure.ACCESSIBILITY_ALLOW_DIAGONAL_SCROLLING, 837 Settings.Secure.AMBIENT_CONTEXT_CONSENT_COMPONENT, 838 Settings.Secure.AMBIENT_CONTEXT_EVENT_ARRAY_EXTRA_KEY, 839 Settings.Secure.AMBIENT_CONTEXT_PACKAGE_NAME_EXTRA_KEY, 840 Settings.Secure.AUTO_REVOKE_DISABLED, 841 Settings.Secure.BIOMETRIC_APP_ENABLED, 842 Settings.Secure.BIOMETRIC_KEYGUARD_ENABLED, 843 Settings.Secure.BIOMETRIC_VIRTUAL_ENABLED, 844 Settings.Secure.BIOMETRIC_FINGERPRINT_VIRTUAL_ENABLED, 845 Settings.Secure.BIOMETRIC_FACE_VIRTUAL_ENABLED, 846 Settings.Secure.BLUETOOTH_ADDR_VALID, 847 Settings.Secure.BLUETOOTH_ADDRESS, 848 Settings.Secure.BLUETOOTH_NAME, 849 Settings.Secure.BUBBLE_IMPORTANT_CONVERSATIONS, 850 Settings.Secure.CLIPBOARD_SHOW_ACCESS_NOTIFICATIONS, 851 Settings.Secure.COMMUNAL_MODE_ENABLED, 852 Settings.Secure.COMMUNAL_MODE_TRUSTED_NETWORKS, 853 Settings.Secure.DEFAULT_VOICE_INPUT_METHOD, 854 Settings.Secure.DOCK_SETUP_STATE, 855 Settings.Secure.EXTRA_AUTOMATIC_POWER_SAVE_MODE, 856 Settings.Secure.GAME_DASHBOARD_ALWAYS_ON, 857 Settings.Secure.HDMI_CEC_SET_MENU_LANGUAGE_DENYLIST, 858 Settings.Secure.HIDE_PRIVATESPACE_ENTRY_POINT, 859 Settings.Secure.LAUNCHER_TASKBAR_EDUCATION_SHOWING, 860 Settings.Secure.LOCATION_COARSE_ACCURACY_M, 861 Settings.Secure.LOCATION_SHOW_SYSTEM_OPS, 862 Settings.Secure.NAS_SETTINGS_UPDATED, 863 Settings.Secure.NAV_BAR_FORCE_VISIBLE, 864 Settings.Secure.NAV_BAR_KIDS_MODE, 865 Settings.Secure.NEARBY_FAST_PAIR_SETTINGS_DEVICES_COMPONENT, 866 Settings.Secure.NEARBY_SHARING_SLICE_URI, 867 Settings.Secure.NOTIFIED_NON_ACCESSIBILITY_CATEGORY_SERVICES, 868 Settings.Secure.ONE_HANDED_TUTORIAL_SHOW_COUNT, 869 Settings.Secure.PRIVATE_SPACE_AUTO_LOCK, 870 Settings.Secure.RELEASE_COMPRESS_BLOCKS_ON_INSTALL, 871 Settings.Secure.SCREENSAVER_COMPLICATIONS_ENABLED, 872 Settings.Secure.SHOW_QR_CODE_SCANNER_SETTING, 873 Settings.Secure.SKIP_ACCESSIBILITY_SHORTCUT_DIALOG_TIMEOUT_RESTRICTION, 874 Settings.Secure.SPATIAL_AUDIO_ENABLED, 875 Settings.Secure.TIMEOUT_TO_DOCK_USER, 876 Settings.Secure.UI_NIGHT_MODE_LAST_COMPUTED, 877 Settings.Secure.UI_NIGHT_MODE_OVERRIDE_OFF, 878 Settings.Secure.UI_NIGHT_MODE_OVERRIDE_ON); 879 880 HashSet<String> keys = new HashSet<String>(); 881 Collections.addAll(keys, SecureSettings.SETTINGS_TO_BACKUP); 882 Collections.addAll(keys, DEVICE_SPECIFIC_SETTINGS_TO_BACKUP); 883 884 Set<String> allSettings = getCandidateSettings(Settings.Secure.class); 885 allSettings.removeAll(settingsNotBackedUpOrDeniedTemporaryAllowList); 886 887 checkSettingsBackedUpOrDenied(allSettings, keys, BACKUP_DENY_LIST_SECURE_SETTINGS); 888 } 889 890 /** 891 * The following denylists contain settings that should *not* be backed up and restored to 892 * another device. As a general rule, anything that is not user configurable should be 893 * denied (and conversely, things that *are* user configurable *should* be backed up) 894 */ getBackUpDenyListSystemSettings()895 private static Set<String> getBackUpDenyListSystemSettings() { 896 Set<String> settings = 897 newHashSet( 898 Settings.System.ADVANCED_SETTINGS, // candidate for backup? 899 Settings.System.ALARM_ALERT_CACHE, // internal cache 900 Settings.System.APPEND_FOR_LAST_AUDIBLE, // suffix deprecated since API 2 901 Settings.System.EGG_MODE, // I am the lolrus 902 Settings.System.END_BUTTON_BEHAVIOR, // bug? 903 Settings.System.DEFAULT_DEVICE_FONT_SCALE, // Non configurable 904 Settings.System 905 .HIDE_ROTATION_LOCK_TOGGLE_FOR_ACCESSIBILITY, 906 // candidate for backup? 907 Settings.System.LOCKSCREEN_DISABLED, // ? 908 Settings.System.MEDIA_BUTTON_RECEIVER, // candidate for backup? 909 Settings.System.MUTE_STREAMS_AFFECTED, // candidate for backup? 910 Settings.System.NOTIFICATION_SOUND_CACHE, // internal cache 911 Settings.System.POINTER_LOCATION, // backup candidate? 912 Settings.System.DEBUG_ENABLE_ENHANCED_CALL_BLOCKING, 913 // used for testing only 914 Settings.System.RINGTONE_CACHE, // internal cache 915 Settings.System.SCREEN_BRIGHTNESS, // removed in P 916 Settings.System.SETUP_WIZARD_HAS_RUN, // Only used by SuW 917 Settings.System.SHOW_GTALK_SERVICE_STATUS, // candidate for backup? 918 Settings.System.SHOW_TOUCHES, 919 Settings.System.SHOW_KEY_PRESSES, 920 Settings.System.SHOW_ROTARY_INPUT, 921 Settings.System.SIP_ADDRESS_ONLY, // value, not a setting 922 Settings.System.SIP_ALWAYS, // value, not a setting 923 Settings.System.SYSTEM_LOCALES, // bug? 924 Settings.System.USER_ROTATION, // backup candidate? 925 Settings.System.VIBRATE_IN_SILENT, // deprecated? 926 Settings.System.VOLUME_ACCESSIBILITY, 927 // used internally, changing value will 928 // not change volume 929 Settings.System.VOLUME_ALARM, // deprecated since API 2? 930 Settings.System.VOLUME_ASSISTANT, // candidate for backup? 931 Settings.System.VOLUME_BLUETOOTH_SCO, // deprecated since API 2? 932 Settings.System.VOLUME_MASTER, // candidate for backup? 933 Settings.System.VOLUME_MUSIC, // deprecated since API 2? 934 Settings.System.VOLUME_NOTIFICATION, // deprecated since API 2? 935 Settings.System.VOLUME_RING, // deprecated since API 2? 936 Settings.System.VOLUME_SYSTEM, // deprecated since API 2? 937 Settings.System.VOLUME_VOICE, // deprecated since API 2? 938 Settings.System.WHEN_TO_MAKE_WIFI_CALLS, // bug? 939 Settings.System.WINDOW_ORIENTATION_LISTENER_LOG, // used for debugging only 940 Settings.System.SCREEN_BRIGHTNESS_FOR_ALS, 941 Settings.System.WEAR_ACCESSIBILITY_GESTURE_ENABLED_DURING_OOBE, 942 Settings.System.WEAR_TTS_PREWARM_ENABLED, 943 Settings.System.SCREEN_AUTO_BRIGHTNESS_ADJ, 944 Settings.System.MULTI_AUDIO_FOCUS_ENABLED // form-factor/OEM specific 945 ); 946 if (!Flags.backUpSmoothDisplayAndForcePeakRefreshRate()) { 947 settings.add(Settings.System.MIN_REFRESH_RATE); 948 settings.add(Settings.System.PEAK_REFRESH_RATE); 949 } 950 return settings; 951 } 952 checkSettingsBackedUpOrDenied( Set<String> settings, Set<String> settingsToBackup, Set<String> denylist)953 private static void checkSettingsBackedUpOrDenied( 954 Set<String> settings, Set<String> settingsToBackup, Set<String> denylist) { 955 Set<String> settingsNotBackedUp = difference(settings, settingsToBackup); 956 Set<String> settingsNotBackedUpOrDenied = difference(settingsNotBackedUp, denylist); 957 assertWithMessage("Settings not backed up or denied") 958 .that(settingsNotBackedUpOrDenied).isEmpty(); 959 960 assertWithMessage("denied settings backed up") 961 .that(intersect(settingsToBackup, denylist)).isEmpty(); 962 } 963 getCandidateSettings(Class<?> clazz)964 private static Set<String> getCandidateSettings(Class<?> clazz) { 965 HashSet<String> result = new HashSet<String>(); 966 for (Field field : clazz.getDeclaredFields()) { 967 if (looksLikeValidSetting(field)) { 968 try { 969 result.add((String) field.get(null)); 970 } catch (IllegalAccessException e) { 971 // Impossible for public fields 972 throw new RuntimeException(e); 973 } 974 } 975 } 976 return result; 977 } 978 looksLikeValidSetting(Field field)979 private static boolean looksLikeValidSetting(Field field) { 980 int modifiers = field.getModifiers(); 981 return isPublic(modifiers) 982 && isStatic(modifiers) 983 && isFinal(modifiers) 984 && field.getType() == String.class 985 && field.getAnnotation(Deprecated.class) == null; 986 } 987 difference(Set<T> s1, Set<T> s2)988 private static <T> Set<T> difference(Set<T> s1, Set<T> s2) { 989 HashSet<T> result = new HashSet<T>(s1); 990 result.removeAll(s2); 991 return result; 992 } 993 intersect(Set<T> s1, Set<T> s2)994 private static <T> Set<T> intersect(Set<T> s1, Set<T> s2) { 995 HashSet<T> result = new HashSet<T>(s1); 996 result.retainAll(s2); 997 return result; 998 } 999 1000 } 1001