1/* 2** Copyright 2008, The Android Open Source Project 3** 4** Licensed under the Apache License, Version 2.0 (the "License"); 5** you may not use this file except in compliance with the License. 6** You may obtain a copy of the License at 7** 8** http://www.apache.org/licenses/LICENSE-2.0 9** 10** Unless required by applicable law or agreed to in writing, software 11** distributed under the License is distributed on an "AS IS" BASIS, 12** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13** See the License for the specific language governing permissions and 14** limitations under the License. 15*/ 16 17#include "InstalldNativeService.h" 18 19#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER 20 21#include <errno.h> 22#include <inttypes.h> 23#include <fstream> 24#include <fts.h> 25#include <regex> 26#include <stdlib.h> 27#include <string.h> 28#include <sys/capability.h> 29#include <sys/file.h> 30#include <sys/resource.h> 31#include <sys/quota.h> 32#include <sys/stat.h> 33#include <sys/statvfs.h> 34#include <sys/types.h> 35#include <sys/wait.h> 36#include <sys/xattr.h> 37#include <unistd.h> 38 39#include <android-base/logging.h> 40#include <android-base/stringprintf.h> 41#include <android-base/strings.h> 42#include <android-base/unique_fd.h> 43#include <cutils/fs.h> 44#include <cutils/properties.h> 45#include <cutils/sched_policy.h> 46#include <log/log.h> // TODO: Move everything to base/logging. 47#include <logwrap/logwrap.h> 48#include <private/android_filesystem_config.h> 49#include <selinux/android.h> 50#include <system/thread_defs.h> 51#include <utils/Trace.h> 52 53#include "dexopt.h" 54#include "globals.h" 55#include "installd_deps.h" 56#include "otapreopt_utils.h" 57#include "utils.h" 58 59#include "CacheTracker.h" 60#include "MatchExtensionGen.h" 61 62#ifndef LOG_TAG 63#define LOG_TAG "installd" 64#endif 65 66using android::base::StringPrintf; 67using std::endl; 68 69namespace android { 70namespace installd { 71 72static constexpr const char* kCpPath = "/system/bin/cp"; 73static constexpr const char* kXattrDefault = "user.default"; 74 75static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 76 77static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 78static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 79static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 80 81static constexpr const char *kIdMapPath = "/system/bin/idmap"; 82static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 83static constexpr const char* IDMAP_SUFFIX = "@idmap"; 84 85// NOTE: keep in sync with Installer 86static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 87static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 88static constexpr int FLAG_USE_QUOTA = 1 << 12; 89static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13; 90static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14; 91static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15; 92static constexpr int FLAG_FORCE = 1 << 16; 93 94namespace { 95 96constexpr const char* kDump = "android.permission.DUMP"; 97 98static binder::Status ok() { 99 return binder::Status::ok(); 100} 101 102static binder::Status exception(uint32_t code, const std::string& msg) { 103 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 104} 105 106static binder::Status error() { 107 return binder::Status::fromServiceSpecificError(errno); 108} 109 110static binder::Status error(const std::string& msg) { 111 PLOG(ERROR) << msg; 112 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 113} 114 115static binder::Status error(uint32_t code, const std::string& msg) { 116 LOG(ERROR) << msg << " (" << code << ")"; 117 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 118} 119 120binder::Status checkPermission(const char* permission) { 121 pid_t pid; 122 uid_t uid; 123 124 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 125 reinterpret_cast<int32_t*>(&uid))) { 126 return ok(); 127 } else { 128 return exception(binder::Status::EX_SECURITY, 129 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 130 } 131} 132 133binder::Status checkUid(uid_t expectedUid) { 134 uid_t uid = IPCThreadState::self()->getCallingUid(); 135 if (uid == expectedUid || uid == AID_ROOT) { 136 return ok(); 137 } else { 138 return exception(binder::Status::EX_SECURITY, 139 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 140 } 141} 142 143binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 144 if (!uuid || is_valid_filename(*uuid)) { 145 return ok(); 146 } else { 147 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 148 StringPrintf("UUID %s is malformed", uuid->c_str())); 149 } 150} 151 152binder::Status checkArgumentPackageName(const std::string& packageName) { 153 if (is_valid_package_name(packageName.c_str())) { 154 return ok(); 155 } else { 156 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 157 StringPrintf("Package name %s is malformed", packageName.c_str())); 158 } 159} 160 161#define ENFORCE_UID(uid) { \ 162 binder::Status status = checkUid((uid)); \ 163 if (!status.isOk()) { \ 164 return status; \ 165 } \ 166} 167 168#define CHECK_ARGUMENT_UUID(uuid) { \ 169 binder::Status status = checkArgumentUuid((uuid)); \ 170 if (!status.isOk()) { \ 171 return status; \ 172 } \ 173} 174 175#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 176 binder::Status status = \ 177 checkArgumentPackageName((packageName)); \ 178 if (!status.isOk()) { \ 179 return status; \ 180 } \ 181} 182 183} // namespace 184 185status_t InstalldNativeService::start() { 186 IPCThreadState::self()->disableBackgroundScheduling(true); 187 status_t ret = BinderService<InstalldNativeService>::publish(); 188 if (ret != android::OK) { 189 return ret; 190 } 191 sp<ProcessState> ps(ProcessState::self()); 192 ps->startThreadPool(); 193 ps->giveThreadPoolName(); 194 return android::OK; 195} 196 197status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 198 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 199 const binder::Status dump_permission = checkPermission(kDump); 200 if (!dump_permission.isOk()) { 201 out << dump_permission.toString8() << endl; 202 return PERMISSION_DENIED; 203 } 204 std::lock_guard<std::recursive_mutex> lock(mLock); 205 206 out << "installd is happy!" << endl; 207 208 { 209 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 210 out << endl << "Storage mounts:" << endl; 211 for (const auto& n : mStorageMounts) { 212 out << " " << n.first << " = " << n.second << endl; 213 } 214 215 out << endl << "Quota reverse mounts:" << endl; 216 for (const auto& n : mQuotaReverseMounts) { 217 out << " " << n.first << " = " << n.second << endl; 218 } 219 } 220 221 { 222 std::lock_guard<std::recursive_mutex> lock(mQuotasLock); 223 out << endl << "Per-UID cache quotas:" << endl; 224 for (const auto& n : mCacheQuotas) { 225 out << " " << n.first << " = " << n.second << endl; 226 } 227 } 228 229 out << endl; 230 out.flush(); 231 232 return NO_ERROR; 233} 234 235/** 236 * Perform restorecon of the given path, but only perform recursive restorecon 237 * if the label of that top-level file actually changed. This can save us 238 * significant time by avoiding no-op traversals of large filesystem trees. 239 */ 240static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 241 bool existing) { 242 int res = 0; 243 char* before = nullptr; 244 char* after = nullptr; 245 246 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 247 // libselinux. Not needed here. 248 249 if (lgetfilecon(path.c_str(), &before) < 0) { 250 PLOG(ERROR) << "Failed before getfilecon for " << path; 251 goto fail; 252 } 253 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 254 PLOG(ERROR) << "Failed top-level restorecon for " << path; 255 goto fail; 256 } 257 if (lgetfilecon(path.c_str(), &after) < 0) { 258 PLOG(ERROR) << "Failed after getfilecon for " << path; 259 goto fail; 260 } 261 262 // If the initial top-level restorecon above changed the label, then go 263 // back and restorecon everything recursively 264 if (strcmp(before, after)) { 265 if (existing) { 266 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 267 << path << "; running recursive restorecon"; 268 } 269 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 270 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 271 PLOG(ERROR) << "Failed recursive restorecon for " << path; 272 goto fail; 273 } 274 } 275 276 goto done; 277fail: 278 res = -1; 279done: 280 free(before); 281 free(after); 282 return res; 283} 284 285static int restorecon_app_data_lazy(const std::string& parent, const char* name, 286 const std::string& seInfo, uid_t uid, bool existing) { 287 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 288 existing); 289} 290 291static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 292 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 293 PLOG(ERROR) << "Failed to prepare " << path; 294 return -1; 295 } 296 return 0; 297} 298 299/** 300 * Ensure that we have a hard-limit quota to protect against abusive apps; 301 * they should never use more than 90% of blocks or 50% of inodes. 302 */ 303static int prepare_app_quota(const std::unique_ptr<std::string>& uuid, const std::string& device, 304 uid_t uid) { 305 if (device.empty()) return 0; 306 307 struct dqblk dq; 308 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 309 reinterpret_cast<char*>(&dq)) != 0) { 310 PLOG(WARNING) << "Failed to find quota for " << uid; 311 return -1; 312 } 313 314 if ((dq.dqb_bhardlimit == 0) || (dq.dqb_ihardlimit == 0)) { 315 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 316 struct statvfs stat; 317 if (statvfs(path.c_str(), &stat) != 0) { 318 PLOG(WARNING) << "Failed to statvfs " << path; 319 return -1; 320 } 321 322 dq.dqb_valid = QIF_LIMITS; 323 dq.dqb_bhardlimit = (((stat.f_blocks * stat.f_frsize) / 10) * 9) / QIF_DQBLKSIZE; 324 dq.dqb_ihardlimit = (stat.f_files / 2); 325 if (quotactl(QCMD(Q_SETQUOTA, USRQUOTA), device.c_str(), uid, 326 reinterpret_cast<char*>(&dq)) != 0) { 327 PLOG(WARNING) << "Failed to set hard quota for " << uid; 328 return -1; 329 } else { 330 LOG(DEBUG) << "Applied hard quotas for " << uid; 331 return 0; 332 } 333 } else { 334 // Hard quota already set; assume it's reasonable 335 return 0; 336 } 337} 338 339binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 340 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 341 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 342 ENFORCE_UID(AID_SYSTEM); 343 CHECK_ARGUMENT_UUID(uuid); 344 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 345 std::lock_guard<std::recursive_mutex> lock(mLock); 346 347 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 348 const char* pkgname = packageName.c_str(); 349 350 // Assume invalid inode unless filled in below 351 if (_aidl_return != nullptr) *_aidl_return = -1; 352 353 int32_t uid = multiuser_get_uid(userId, appId); 354 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 355 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 356 357 // If UID doesn't have a specific cache GID, use UID value 358 if (cacheGid == -1) { 359 cacheGid = uid; 360 } 361 362 if (flags & FLAG_STORAGE_CE) { 363 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 364 bool existing = (access(path.c_str(), F_OK) == 0); 365 366 if (prepare_app_dir(path, targetMode, uid) || 367 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 368 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 369 return error("Failed to prepare " + path); 370 } 371 372 // Consider restorecon over contents if label changed 373 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 374 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 375 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 376 return error("Failed to restorecon " + path); 377 } 378 379 // Remember inode numbers of cache directories so that we can clear 380 // contents while CE storage is locked 381 if (write_path_inode(path, "cache", kXattrInodeCache) || 382 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 383 return error("Failed to write_path_inode for " + path); 384 } 385 386 // And return the CE inode of the top-level data directory so we can 387 // clear contents while CE storage is locked 388 if ((_aidl_return != nullptr) 389 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 390 return error("Failed to get_path_inode for " + path); 391 } 392 } 393 if (flags & FLAG_STORAGE_DE) { 394 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 395 bool existing = (access(path.c_str(), F_OK) == 0); 396 397 if (prepare_app_dir(path, targetMode, uid) || 398 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 399 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 400 return error("Failed to prepare " + path); 401 } 402 403 // Consider restorecon over contents if label changed 404 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 405 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 406 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 407 return error("Failed to restorecon " + path); 408 } 409 410 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), uid)) { 411 return error("Failed to set hard quota " + path); 412 } 413 414 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 415 const std::string profile_dir = 416 create_primary_current_profile_package_dir_path(userId, pkgname); 417 // read-write-execute only for the app user. 418 if (fs_prepare_dir_strict(profile_dir.c_str(), 0700, uid, uid) != 0) { 419 return error("Failed to prepare " + profile_dir); 420 } 421 const std::string profile_file = create_current_profile_path(userId, pkgname, 422 /*is_secondary_dex*/false); 423 // read-write only for the app user. 424 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 425 return error("Failed to prepare " + profile_file); 426 } 427 const std::string ref_profile_path = 428 create_primary_reference_profile_package_dir_path(pkgname); 429 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 430 // profiles. 431 int shared_app_gid = multiuser_get_shared_gid(0, appId); 432 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 433 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 434 return error("Failed to prepare " + ref_profile_path); 435 } 436 } 437 } 438 return ok(); 439} 440 441binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 442 const std::string& packageName, int32_t userId, int32_t flags) { 443 ENFORCE_UID(AID_SYSTEM); 444 CHECK_ARGUMENT_UUID(uuid); 445 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 446 std::lock_guard<std::recursive_mutex> lock(mLock); 447 448 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 449 const char* pkgname = packageName.c_str(); 450 451 // This method only exists to upgrade system apps that have requested 452 // forceDeviceEncrypted, so their default storage always lives in a 453 // consistent location. This only works on non-FBE devices, since we 454 // never want to risk exposing data on a device with real CE/DE storage. 455 456 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 457 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 458 459 // If neither directory is marked as default, assume CE is default 460 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 461 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 462 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 463 return error("Failed to mark default storage " + ce_path); 464 } 465 } 466 467 // Migrate default data location if needed 468 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 469 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 470 471 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 472 LOG(WARNING) << "Requested default storage " << target 473 << " is not active; migrating from " << source; 474 if (delete_dir_contents_and_dir(target) != 0) { 475 return error("Failed to delete " + target); 476 } 477 if (rename(source.c_str(), target.c_str()) != 0) { 478 return error("Failed to rename " + source + " to " + target); 479 } 480 } 481 482 return ok(); 483} 484 485 486binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 487 ENFORCE_UID(AID_SYSTEM); 488 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 489 std::lock_guard<std::recursive_mutex> lock(mLock); 490 491 binder::Status res = ok(); 492 if (!clear_primary_reference_profile(packageName)) { 493 res = error("Failed to clear reference profile for " + packageName); 494 } 495 if (!clear_primary_current_profiles(packageName)) { 496 res = error("Failed to clear current profiles for " + packageName); 497 } 498 return res; 499} 500 501binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 502 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 503 ENFORCE_UID(AID_SYSTEM); 504 CHECK_ARGUMENT_UUID(uuid); 505 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 506 std::lock_guard<std::recursive_mutex> lock(mLock); 507 508 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 509 const char* pkgname = packageName.c_str(); 510 511 binder::Status res = ok(); 512 if (flags & FLAG_STORAGE_CE) { 513 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 514 if (flags & FLAG_CLEAR_CACHE_ONLY) { 515 path = read_path_inode(path, "cache", kXattrInodeCache); 516 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 517 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 518 } 519 if (access(path.c_str(), F_OK) == 0) { 520 if (delete_dir_contents(path) != 0) { 521 res = error("Failed to delete contents of " + path); 522 } 523 } 524 } 525 if (flags & FLAG_STORAGE_DE) { 526 std::string suffix = ""; 527 bool only_cache = false; 528 if (flags & FLAG_CLEAR_CACHE_ONLY) { 529 suffix = CACHE_DIR_POSTFIX; 530 only_cache = true; 531 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 532 suffix = CODE_CACHE_DIR_POSTFIX; 533 only_cache = true; 534 } 535 536 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 537 if (access(path.c_str(), F_OK) == 0) { 538 if (delete_dir_contents(path) != 0) { 539 res = error("Failed to delete contents of " + path); 540 } 541 } 542 if (!only_cache) { 543 if (!clear_primary_current_profile(packageName, userId)) { 544 res = error("Failed to clear current profile for " + packageName); 545 } 546 } 547 } 548 return res; 549} 550 551static int destroy_app_reference_profile(const std::string& pkgname) { 552 return delete_dir_contents_and_dir( 553 create_primary_reference_profile_package_dir_path(pkgname), 554 /*ignore_if_missing*/ true); 555} 556 557static int destroy_app_current_profiles(const std::string& pkgname, userid_t userid) { 558 return delete_dir_contents_and_dir( 559 create_primary_current_profile_package_dir_path(userid, pkgname), 560 /*ignore_if_missing*/ true); 561} 562 563binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 564 ENFORCE_UID(AID_SYSTEM); 565 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 566 std::lock_guard<std::recursive_mutex> lock(mLock); 567 568 binder::Status res = ok(); 569 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 570 for (auto user : users) { 571 if (destroy_app_current_profiles(packageName, user) != 0) { 572 res = error("Failed to destroy current profiles for " + packageName); 573 } 574 } 575 if (destroy_app_reference_profile(packageName) != 0) { 576 res = error("Failed to destroy reference profile for " + packageName); 577 } 578 return res; 579} 580 581binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 582 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 583 ENFORCE_UID(AID_SYSTEM); 584 CHECK_ARGUMENT_UUID(uuid); 585 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 586 std::lock_guard<std::recursive_mutex> lock(mLock); 587 588 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 589 const char* pkgname = packageName.c_str(); 590 591 binder::Status res = ok(); 592 if (flags & FLAG_STORAGE_CE) { 593 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 594 if (delete_dir_contents_and_dir(path) != 0) { 595 res = error("Failed to delete " + path); 596 } 597 } 598 if (flags & FLAG_STORAGE_DE) { 599 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 600 if (delete_dir_contents_and_dir(path) != 0) { 601 res = error("Failed to delete " + path); 602 } 603 destroy_app_current_profiles(packageName, userId); 604 // TODO(calin): If the package is still installed by other users it's probably 605 // beneficial to keep the reference profile around. 606 // Verify if it's ok to do that. 607 destroy_app_reference_profile(packageName); 608 } 609 return res; 610} 611 612static gid_t get_cache_gid(uid_t uid) { 613 int32_t gid = multiuser_get_cache_gid(multiuser_get_user_id(uid), multiuser_get_app_id(uid)); 614 return (gid != -1) ? gid : uid; 615} 616 617binder::Status InstalldNativeService::fixupAppData(const std::unique_ptr<std::string>& uuid, 618 int32_t flags) { 619 ENFORCE_UID(AID_SYSTEM); 620 CHECK_ARGUMENT_UUID(uuid); 621 std::lock_guard<std::recursive_mutex> lock(mLock); 622 623 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 624 for (auto user : get_known_users(uuid_)) { 625 ATRACE_BEGIN("fixup user"); 626 FTS* fts; 627 FTSENT* p; 628 auto ce_path = create_data_user_ce_path(uuid_, user); 629 auto de_path = create_data_user_de_path(uuid_, user); 630 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr }; 631 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 632 return error("Failed to fts_open"); 633 } 634 while ((p = fts_read(fts)) != nullptr) { 635 if (p->fts_info == FTS_D && p->fts_level == 1) { 636 // Track down inodes of cache directories 637 uint64_t raw = 0; 638 ino_t inode_cache = 0; 639 ino_t inode_code_cache = 0; 640 if (getxattr(p->fts_path, kXattrInodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 641 inode_cache = raw; 642 } 643 if (getxattr(p->fts_path, kXattrInodeCodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 644 inode_code_cache = raw; 645 } 646 647 // Figure out expected GID of each child 648 FTSENT* child = fts_children(fts, 0); 649 while (child != nullptr) { 650 if ((child->fts_statp->st_ino == inode_cache) 651 || (child->fts_statp->st_ino == inode_code_cache) 652 || !strcmp(child->fts_name, "cache") 653 || !strcmp(child->fts_name, "code_cache")) { 654 child->fts_number = get_cache_gid(p->fts_statp->st_uid); 655 } else { 656 child->fts_number = p->fts_statp->st_uid; 657 } 658 child = child->fts_link; 659 } 660 } else if (p->fts_level >= 2) { 661 if (p->fts_level > 2) { 662 // Inherit GID from parent once we're deeper into tree 663 p->fts_number = p->fts_parent->fts_number; 664 } 665 666 uid_t uid = p->fts_parent->fts_statp->st_uid; 667 gid_t cache_gid = get_cache_gid(uid); 668 gid_t expected = p->fts_number; 669 gid_t actual = p->fts_statp->st_gid; 670 if (actual == expected) { 671#if FIXUP_DEBUG 672 LOG(DEBUG) << "Ignoring " << p->fts_path << " with expected GID " << expected; 673#endif 674 if (!(flags & FLAG_FORCE)) { 675 fts_set(fts, p, FTS_SKIP); 676 } 677 } else if ((actual == uid) || (actual == cache_gid)) { 678 // Only consider fixing up when current GID belongs to app 679 if (p->fts_info != FTS_D) { 680 LOG(INFO) << "Fixing " << p->fts_path << " with unexpected GID " << actual 681 << " instead of " << expected; 682 } 683 switch (p->fts_info) { 684 case FTS_DP: 685 // If we're moving towards cache GID, we need to set S_ISGID 686 if (expected == cache_gid) { 687 if (chmod(p->fts_path, 02771) != 0) { 688 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 689 } 690 } 691 // Intentional fall through to also set GID 692 case FTS_F: 693 if (chown(p->fts_path, -1, expected) != 0) { 694 PLOG(WARNING) << "Failed to chown " << p->fts_path; 695 } 696 break; 697 case FTS_SL: 698 case FTS_SLNONE: 699 if (lchown(p->fts_path, -1, expected) != 0) { 700 PLOG(WARNING) << "Failed to chown " << p->fts_path; 701 } 702 break; 703 } 704 } else { 705 // Ignore all other GID transitions, since they're kinda shady 706 LOG(WARNING) << "Ignoring " << p->fts_path << " with unexpected GID " << actual 707 << " instead of " << expected; 708 } 709 } 710 } 711 fts_close(fts); 712 ATRACE_END(); 713 } 714 return ok(); 715} 716 717binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 718 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 719 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 720 int32_t targetSdkVersion) { 721 ENFORCE_UID(AID_SYSTEM); 722 CHECK_ARGUMENT_UUID(fromUuid); 723 CHECK_ARGUMENT_UUID(toUuid); 724 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 725 std::lock_guard<std::recursive_mutex> lock(mLock); 726 727 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 728 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 729 const char* package_name = packageName.c_str(); 730 const char* data_app_name = dataAppName.c_str(); 731 732 binder::Status res = ok(); 733 std::vector<userid_t> users = get_known_users(from_uuid); 734 735 // Copy app 736 { 737 auto from = create_data_app_package_path(from_uuid, data_app_name); 738 auto to = create_data_app_package_path(to_uuid, data_app_name); 739 auto to_parent = create_data_app_path(to_uuid); 740 741 char *argv[] = { 742 (char*) kCpPath, 743 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 744 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 745 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 746 (char*) "-P", /* Do not follow symlinks [default] */ 747 (char*) "-d", /* don't dereference symlinks */ 748 (char*) from.c_str(), 749 (char*) to_parent.c_str() 750 }; 751 752 LOG(DEBUG) << "Copying " << from << " to " << to; 753 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 754 if (rc != 0) { 755 res = error(rc, "Failed copying " + from + " to " + to); 756 goto fail; 757 } 758 759 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 760 res = error("Failed to restorecon " + to); 761 goto fail; 762 } 763 } 764 765 // Copy private data for all known users 766 for (auto user : users) { 767 768 // Data source may not exist for all users; that's okay 769 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 770 if (access(from_ce.c_str(), F_OK) != 0) { 771 LOG(INFO) << "Missing source " << from_ce; 772 continue; 773 } 774 775 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 776 seInfo, targetSdkVersion, nullptr).isOk()) { 777 res = error("Failed to create package target"); 778 goto fail; 779 } 780 781 char *argv[] = { 782 (char*) kCpPath, 783 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 784 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 785 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 786 (char*) "-P", /* Do not follow symlinks [default] */ 787 (char*) "-d", /* don't dereference symlinks */ 788 nullptr, 789 nullptr 790 }; 791 792 { 793 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 794 auto to = create_data_user_de_path(to_uuid, user); 795 argv[6] = (char*) from.c_str(); 796 argv[7] = (char*) to.c_str(); 797 798 LOG(DEBUG) << "Copying " << from << " to " << to; 799 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 800 if (rc != 0) { 801 res = error(rc, "Failed copying " + from + " to " + to); 802 goto fail; 803 } 804 } 805 { 806 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 807 auto to = create_data_user_ce_path(to_uuid, user); 808 argv[6] = (char*) from.c_str(); 809 argv[7] = (char*) to.c_str(); 810 811 LOG(DEBUG) << "Copying " << from << " to " << to; 812 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 813 if (rc != 0) { 814 res = error(rc, "Failed copying " + from + " to " + to); 815 goto fail; 816 } 817 } 818 819 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 820 appId, seInfo).isOk()) { 821 res = error("Failed to restorecon"); 822 goto fail; 823 } 824 } 825 826 // We let the framework scan the new location and persist that before 827 // deleting the data in the old location; this ordering ensures that 828 // we can recover from things like battery pulls. 829 return ok(); 830 831fail: 832 // Nuke everything we might have already copied 833 { 834 auto to = create_data_app_package_path(to_uuid, data_app_name); 835 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 836 LOG(WARNING) << "Failed to rollback " << to; 837 } 838 } 839 for (auto user : users) { 840 { 841 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 842 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 843 LOG(WARNING) << "Failed to rollback " << to; 844 } 845 } 846 { 847 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 848 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 849 LOG(WARNING) << "Failed to rollback " << to; 850 } 851 } 852 } 853 return res; 854} 855 856binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 857 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 858 ENFORCE_UID(AID_SYSTEM); 859 CHECK_ARGUMENT_UUID(uuid); 860 std::lock_guard<std::recursive_mutex> lock(mLock); 861 862 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 863 if (flags & FLAG_STORAGE_DE) { 864 if (uuid_ == nullptr) { 865 if (ensure_config_user_dirs(userId) != 0) { 866 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 867 } 868 } 869 } 870 871 // Data under /data/media doesn't have an app, but we still want 872 // to limit it to prevent abuse. 873 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), 874 multiuser_get_uid(userId, AID_MEDIA_RW))) { 875 return error("Failed to set hard quota for media_rw"); 876 } 877 878 return ok(); 879} 880 881binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 882 int32_t userId, int32_t flags) { 883 ENFORCE_UID(AID_SYSTEM); 884 CHECK_ARGUMENT_UUID(uuid); 885 std::lock_guard<std::recursive_mutex> lock(mLock); 886 887 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 888 binder::Status res = ok(); 889 if (flags & FLAG_STORAGE_DE) { 890 auto path = create_data_user_de_path(uuid_, userId); 891 if (delete_dir_contents_and_dir(path, true) != 0) { 892 res = error("Failed to delete " + path); 893 } 894 if (uuid_ == nullptr) { 895 path = create_data_misc_legacy_path(userId); 896 if (delete_dir_contents_and_dir(path, true) != 0) { 897 res = error("Failed to delete " + path); 898 } 899 path = create_primary_cur_profile_dir_path(userId); 900 if (delete_dir_contents_and_dir(path, true) != 0) { 901 res = error("Failed to delete " + path); 902 } 903 } 904 } 905 if (flags & FLAG_STORAGE_CE) { 906 auto path = create_data_user_ce_path(uuid_, userId); 907 if (delete_dir_contents_and_dir(path, true) != 0) { 908 res = error("Failed to delete " + path); 909 } 910 path = findDataMediaPath(uuid, userId); 911 if (delete_dir_contents_and_dir(path, true) != 0) { 912 res = error("Failed to delete " + path); 913 } 914 } 915 return res; 916} 917 918binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 919 int64_t targetFreeBytes, int64_t cacheReservedBytes, int32_t flags) { 920 ENFORCE_UID(AID_SYSTEM); 921 CHECK_ARGUMENT_UUID(uuid); 922 std::lock_guard<std::recursive_mutex> lock(mLock); 923 924 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 925 auto data_path = create_data_path(uuid_); 926 auto device = findQuotaDeviceForUuid(uuid); 927 auto noop = (flags & FLAG_FREE_CACHE_NOOP); 928 929 int64_t free = data_disk_free(data_path); 930 if (free < 0) { 931 return error("Failed to determine free space for " + data_path); 932 } 933 934 int64_t cleared = 0; 935 int64_t needed = targetFreeBytes - free; 936 LOG(DEBUG) << "Device " << data_path << " has " << free << " free; requested " 937 << targetFreeBytes << "; needed " << needed; 938 939 if (free >= targetFreeBytes) { 940 return ok(); 941 } 942 943 if (flags & FLAG_FREE_CACHE_V2) { 944 // This new cache strategy fairly removes files from UIDs by deleting 945 // files from the UIDs which are most over their allocated quota 946 947 // 1. Create trackers for every known UID 948 ATRACE_BEGIN("create"); 949 std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; 950 for (auto user : get_known_users(uuid_)) { 951 FTS *fts; 952 FTSENT *p; 953 auto ce_path = create_data_user_ce_path(uuid_, user); 954 auto de_path = create_data_user_de_path(uuid_, user); 955 auto media_path = findDataMediaPath(uuid, user) + "/Android/data/"; 956 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), 957 (char*) media_path.c_str(), nullptr }; 958 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 959 return error("Failed to fts_open"); 960 } 961 while ((p = fts_read(fts)) != NULL) { 962 if (p->fts_info == FTS_D && p->fts_level == 1) { 963 uid_t uid = p->fts_statp->st_uid; 964 if (multiuser_get_app_id(uid) == AID_MEDIA_RW) { 965 uid = (multiuser_get_app_id(p->fts_statp->st_gid) - AID_EXT_GID_START) 966 + AID_APP_START; 967 } 968 auto search = trackers.find(uid); 969 if (search != trackers.end()) { 970 search->second->addDataPath(p->fts_path); 971 } else { 972 auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( 973 multiuser_get_user_id(uid), multiuser_get_app_id(uid), device)); 974 tracker->addDataPath(p->fts_path); 975 { 976 std::lock_guard<std::recursive_mutex> lock(mQuotasLock); 977 tracker->cacheQuota = mCacheQuotas[uid]; 978 } 979 if (tracker->cacheQuota == 0) { 980#if MEASURE_DEBUG 981 LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; 982#endif 983 tracker->cacheQuota = 67108864; 984 } 985 trackers[uid] = tracker; 986 } 987 fts_set(fts, p, FTS_SKIP); 988 } 989 } 990 fts_close(fts); 991 } 992 ATRACE_END(); 993 994 // 2. Populate tracker stats and insert into priority queue 995 ATRACE_BEGIN("populate"); 996 int64_t cacheTotal = 0; 997 auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { 998 return (left->getCacheRatio() < right->getCacheRatio()); 999 }; 1000 std::priority_queue<std::shared_ptr<CacheTracker>, 1001 std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); 1002 for (const auto& it : trackers) { 1003 it.second->loadStats(); 1004 queue.push(it.second); 1005 cacheTotal += it.second->cacheUsed; 1006 } 1007 ATRACE_END(); 1008 1009 // 3. Bounce across the queue, freeing items from whichever tracker is 1010 // the most over their assigned quota 1011 ATRACE_BEGIN("bounce"); 1012 std::shared_ptr<CacheTracker> active; 1013 while (active || !queue.empty()) { 1014 // Only look at apps under quota when explicitly requested 1015 if (active && (active->getCacheRatio() < 10000) 1016 && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) { 1017 LOG(DEBUG) << "Active ratio " << active->getCacheRatio() 1018 << " isn't over quota, and defy not requested"; 1019 break; 1020 } 1021 1022 // Only keep clearing when we haven't pushed into reserved area 1023 if (cacheReservedBytes > 0 && cleared >= (cacheTotal - cacheReservedBytes)) { 1024 LOG(DEBUG) << "Refusing to clear cached data in reserved space"; 1025 break; 1026 } 1027 1028 // Find the best tracker to work with; this might involve swapping 1029 // if the active tracker is no longer the most over quota 1030 bool nextBetter = active && !queue.empty() 1031 && active->getCacheRatio() < queue.top()->getCacheRatio(); 1032 if (!active || nextBetter) { 1033 if (active) { 1034 // Current tracker still has items, so we'll consider it 1035 // again later once it bubbles up to surface 1036 queue.push(active); 1037 } 1038 active = queue.top(); queue.pop(); 1039 active->ensureItems(); 1040 continue; 1041 } 1042 1043 // If no items remain, go find another tracker 1044 if (active->items.empty()) { 1045 active = nullptr; 1046 continue; 1047 } else { 1048 auto item = active->items.back(); 1049 active->items.pop_back(); 1050 1051 LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); 1052 if (!noop) { 1053 item->purge(); 1054 } 1055 active->cacheUsed -= item->size; 1056 needed -= item->size; 1057 cleared += item->size; 1058 } 1059 1060 // Verify that we're actually done before bailing, since sneaky 1061 // apps might be using hardlinks 1062 if (needed <= 0) { 1063 free = data_disk_free(data_path); 1064 needed = targetFreeBytes - free; 1065 if (needed <= 0) { 1066 break; 1067 } else { 1068 LOG(WARNING) << "Expected to be done but still need " << needed; 1069 } 1070 } 1071 } 1072 ATRACE_END(); 1073 1074 } else { 1075 return error("Legacy cache logic no longer supported"); 1076 } 1077 1078 free = data_disk_free(data_path); 1079 if (free >= targetFreeBytes) { 1080 return ok(); 1081 } else { 1082 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 1083 targetFreeBytes, data_path.c_str(), free)); 1084 } 1085} 1086 1087binder::Status InstalldNativeService::rmdex(const std::string& codePath, 1088 const std::string& instructionSet) { 1089 ENFORCE_UID(AID_SYSTEM); 1090 std::lock_guard<std::recursive_mutex> lock(mLock); 1091 1092 char dex_path[PKG_PATH_MAX]; 1093 1094 const char* path = codePath.c_str(); 1095 const char* instruction_set = instructionSet.c_str(); 1096 1097 if (validate_apk_path(path) && validate_system_app_path(path)) { 1098 return error("Invalid path " + codePath); 1099 } 1100 1101 if (!create_cache_path(dex_path, path, instruction_set)) { 1102 return error("Failed to create cache path for " + codePath); 1103 } 1104 1105 ALOGV("unlink %s\n", dex_path); 1106 if (unlink(dex_path) < 0) { 1107 // It's ok if we don't have a dalvik cache path. Report error only when the path exists 1108 // but could not be unlinked. 1109 if (errno != ENOENT) { 1110 return error(StringPrintf("Failed to unlink %s", dex_path)); 1111 } 1112 } 1113 return ok(); 1114} 1115 1116struct stats { 1117 int64_t codeSize; 1118 int64_t dataSize; 1119 int64_t cacheSize; 1120}; 1121 1122#if MEASURE_DEBUG 1123static std::string toString(std::vector<int64_t> values) { 1124 std::stringstream res; 1125 res << "["; 1126 for (size_t i = 0; i < values.size(); i++) { 1127 res << values[i]; 1128 if (i < values.size() - 1) { 1129 res << ","; 1130 } 1131 } 1132 res << "]"; 1133 return res.str(); 1134} 1135#endif 1136 1137static void collectQuotaStats(const std::string& device, int32_t userId, 1138 int32_t appId, struct stats* stats, struct stats* extStats) { 1139 if (device.empty()) return; 1140 1141 struct dqblk dq; 1142 1143 if (stats != nullptr) { 1144 uid_t uid = multiuser_get_uid(userId, appId); 1145 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1146 reinterpret_cast<char*>(&dq)) != 0) { 1147 if (errno != ESRCH) { 1148 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1149 } 1150 } else { 1151#if MEASURE_DEBUG 1152 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1153#endif 1154 stats->dataSize += dq.dqb_curspace; 1155 } 1156 1157 int cacheGid = multiuser_get_cache_gid(userId, appId); 1158 if (cacheGid != -1) { 1159 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 1160 reinterpret_cast<char*>(&dq)) != 0) { 1161 if (errno != ESRCH) { 1162 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 1163 } 1164 } else { 1165#if MEASURE_DEBUG 1166 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 1167#endif 1168 stats->cacheSize += dq.dqb_curspace; 1169 } 1170 } 1171 1172 int sharedGid = multiuser_get_shared_gid(0, appId); 1173 if (sharedGid != -1) { 1174 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 1175 reinterpret_cast<char*>(&dq)) != 0) { 1176 if (errno != ESRCH) { 1177 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 1178 } 1179 } else { 1180#if MEASURE_DEBUG 1181 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 1182#endif 1183 stats->codeSize += dq.dqb_curspace; 1184 } 1185 } 1186 } 1187 1188 if (extStats != nullptr) { 1189 int extGid = multiuser_get_ext_gid(userId, appId); 1190 if (extGid != -1) { 1191 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extGid, 1192 reinterpret_cast<char*>(&dq)) != 0) { 1193 if (errno != ESRCH) { 1194 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extGid; 1195 } 1196 } else { 1197#if MEASURE_DEBUG 1198 LOG(DEBUG) << "quotactl() for GID " << extGid << " " << dq.dqb_curspace; 1199#endif 1200 extStats->dataSize += dq.dqb_curspace; 1201 } 1202 } 1203 1204 int extCacheGid = multiuser_get_ext_cache_gid(userId, appId); 1205 if (extCacheGid != -1) { 1206 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extCacheGid, 1207 reinterpret_cast<char*>(&dq)) != 0) { 1208 if (errno != ESRCH) { 1209 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extCacheGid; 1210 } 1211 } else { 1212#if MEASURE_DEBUG 1213 LOG(DEBUG) << "quotactl() for GID " << extCacheGid << " " << dq.dqb_curspace; 1214#endif 1215 extStats->dataSize += dq.dqb_curspace; 1216 extStats->cacheSize += dq.dqb_curspace; 1217 } 1218 } 1219 } 1220} 1221 1222static void collectManualStats(const std::string& path, struct stats* stats) { 1223 DIR *d; 1224 int dfd; 1225 struct dirent *de; 1226 struct stat s; 1227 1228 d = opendir(path.c_str()); 1229 if (d == nullptr) { 1230 if (errno != ENOENT) { 1231 PLOG(WARNING) << "Failed to open " << path; 1232 } 1233 return; 1234 } 1235 dfd = dirfd(d); 1236 while ((de = readdir(d))) { 1237 const char *name = de->d_name; 1238 1239 int64_t size = 0; 1240 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 1241 size = s.st_blocks * 512; 1242 } 1243 1244 if (de->d_type == DT_DIR) { 1245 if (!strcmp(name, ".")) { 1246 // Don't recurse, but still count node size 1247 } else if (!strcmp(name, "..")) { 1248 // Don't recurse or count node size 1249 continue; 1250 } else { 1251 // Measure all children nodes 1252 size = 0; 1253 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1254 } 1255 1256 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1257 stats->cacheSize += size; 1258 } 1259 } 1260 1261 // Legacy symlink isn't owned by app 1262 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1263 continue; 1264 } 1265 1266 // Everything found inside is considered data 1267 stats->dataSize += size; 1268 } 1269 closedir(d); 1270} 1271 1272static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1273 bool exclude_apps = false) { 1274 DIR *d; 1275 int dfd; 1276 struct dirent *de; 1277 struct stat s; 1278 1279 d = opendir(path.c_str()); 1280 if (d == nullptr) { 1281 if (errno != ENOENT) { 1282 PLOG(WARNING) << "Failed to open " << path; 1283 } 1284 return; 1285 } 1286 dfd = dirfd(d); 1287 while ((de = readdir(d))) { 1288 if (de->d_type == DT_DIR) { 1289 const char *name = de->d_name; 1290 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1291 continue; 1292 } 1293 int32_t user_uid = multiuser_get_app_id(s.st_uid); 1294 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1295 continue; 1296 } else if (exclude_apps && (user_uid >= AID_APP_START && user_uid <= AID_APP_END)) { 1297 continue; 1298 } else { 1299 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1300 } 1301 } 1302 } 1303 closedir(d); 1304} 1305 1306static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { 1307 FTS *fts; 1308 FTSENT *p; 1309 char *argv[] = { (char*) path.c_str(), nullptr }; 1310 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1311 PLOG(ERROR) << "Failed to fts_open " << path; 1312 return; 1313 } 1314 while ((p = fts_read(fts)) != NULL) { 1315 p->fts_number = p->fts_parent->fts_number; 1316 switch (p->fts_info) { 1317 case FTS_D: 1318 if (p->fts_level == 4 1319 && !strcmp(p->fts_name, "cache") 1320 && !strcmp(p->fts_parent->fts_parent->fts_name, "data") 1321 && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { 1322 p->fts_number = 1; 1323 } 1324 // Fall through to count the directory 1325 case FTS_DEFAULT: 1326 case FTS_F: 1327 case FTS_SL: 1328 case FTS_SLNONE: 1329 int64_t size = (p->fts_statp->st_blocks * 512); 1330 if (p->fts_number == 1) { 1331 stats->cacheSize += size; 1332 } 1333 stats->dataSize += size; 1334 break; 1335 } 1336 } 1337 fts_close(fts); 1338} 1339 1340binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1341 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1342 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1343 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1344 ENFORCE_UID(AID_SYSTEM); 1345 CHECK_ARGUMENT_UUID(uuid); 1346 for (auto packageName : packageNames) { 1347 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1348 } 1349 // NOTE: Locking is relaxed on this method, since it's limited to 1350 // read-only measurements without mutation. 1351 1352 // When modifying this logic, always verify using tests: 1353 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1354 1355#if MEASURE_DEBUG 1356 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1357#endif 1358 1359 // Here's a summary of the common storage locations across the platform, 1360 // and how they're each tagged: 1361 // 1362 // /data/app/com.example UID system 1363 // /data/app/com.example/oat UID system 1364 // /data/user/0/com.example UID u0_a10 GID u0_a10 1365 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1366 // /data/media/0/foo.txt UID u0_media_rw 1367 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1368 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1369 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1370 // /data/media/obb/com.example UID system 1371 1372 struct stats stats; 1373 struct stats extStats; 1374 memset(&stats, 0, sizeof(stats)); 1375 memset(&extStats, 0, sizeof(extStats)); 1376 1377 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1378 1379 auto device = findQuotaDeviceForUuid(uuid); 1380 if (device.empty()) { 1381 flags &= ~FLAG_USE_QUOTA; 1382 } 1383 1384 ATRACE_BEGIN("obb"); 1385 for (auto packageName : packageNames) { 1386 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1387 calculate_tree_size(obbCodePath, &extStats.codeSize); 1388 } 1389 ATRACE_END(); 1390 1391 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1392 ATRACE_BEGIN("code"); 1393 for (auto codePath : codePaths) { 1394 calculate_tree_size(codePath, &stats.codeSize, -1, 1395 multiuser_get_shared_gid(0, appId)); 1396 } 1397 ATRACE_END(); 1398 1399 ATRACE_BEGIN("quota"); 1400 collectQuotaStats(device, userId, appId, &stats, &extStats); 1401 ATRACE_END(); 1402 } else { 1403 ATRACE_BEGIN("code"); 1404 for (auto codePath : codePaths) { 1405 calculate_tree_size(codePath, &stats.codeSize); 1406 } 1407 ATRACE_END(); 1408 1409 for (size_t i = 0; i < packageNames.size(); i++) { 1410 const char* pkgname = packageNames[i].c_str(); 1411 1412 ATRACE_BEGIN("data"); 1413 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1414 collectManualStats(cePath, &stats); 1415 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1416 collectManualStats(dePath, &stats); 1417 ATRACE_END(); 1418 1419 if (!uuid) { 1420 ATRACE_BEGIN("profiles"); 1421 calculate_tree_size( 1422 create_primary_current_profile_package_dir_path(userId, pkgname), 1423 &stats.dataSize); 1424 calculate_tree_size( 1425 create_primary_reference_profile_package_dir_path(pkgname), 1426 &stats.codeSize); 1427 ATRACE_END(); 1428 } 1429 1430 ATRACE_BEGIN("external"); 1431 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1432 collectManualStats(extPath, &extStats); 1433 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1434 calculate_tree_size(mediaPath, &extStats.dataSize); 1435 ATRACE_END(); 1436 } 1437 1438 if (!uuid) { 1439 ATRACE_BEGIN("dalvik"); 1440 int32_t sharedGid = multiuser_get_shared_gid(0, appId); 1441 if (sharedGid != -1) { 1442 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1443 sharedGid, -1); 1444 } 1445 ATRACE_END(); 1446 } 1447 } 1448 1449 std::vector<int64_t> ret; 1450 ret.push_back(stats.codeSize); 1451 ret.push_back(stats.dataSize); 1452 ret.push_back(stats.cacheSize); 1453 ret.push_back(extStats.codeSize); 1454 ret.push_back(extStats.dataSize); 1455 ret.push_back(extStats.cacheSize); 1456#if MEASURE_DEBUG 1457 LOG(DEBUG) << "Final result " << toString(ret); 1458#endif 1459 *_aidl_return = ret; 1460 return ok(); 1461} 1462 1463binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1464 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1465 std::vector<int64_t>* _aidl_return) { 1466 ENFORCE_UID(AID_SYSTEM); 1467 CHECK_ARGUMENT_UUID(uuid); 1468 // NOTE: Locking is relaxed on this method, since it's limited to 1469 // read-only measurements without mutation. 1470 1471 // When modifying this logic, always verify using tests: 1472 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1473 1474#if MEASURE_DEBUG 1475 LOG(INFO) << "Measuring user " << userId; 1476#endif 1477 1478 struct stats stats; 1479 struct stats extStats; 1480 memset(&stats, 0, sizeof(stats)); 1481 memset(&extStats, 0, sizeof(extStats)); 1482 1483 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1484 1485 auto device = findQuotaDeviceForUuid(uuid); 1486 if (device.empty()) { 1487 flags &= ~FLAG_USE_QUOTA; 1488 } 1489 1490 if (flags & FLAG_USE_QUOTA) { 1491 struct dqblk dq; 1492 1493 ATRACE_BEGIN("obb"); 1494 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), AID_MEDIA_OBB, 1495 reinterpret_cast<char*>(&dq)) != 0) { 1496 if (errno != ESRCH) { 1497 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << AID_MEDIA_OBB; 1498 } 1499 } else { 1500#if MEASURE_DEBUG 1501 LOG(DEBUG) << "quotactl() for GID " << AID_MEDIA_OBB << " " << dq.dqb_curspace; 1502#endif 1503 extStats.codeSize += dq.dqb_curspace; 1504 } 1505 ATRACE_END(); 1506 1507 ATRACE_BEGIN("code"); 1508 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1509 ATRACE_END(); 1510 1511 ATRACE_BEGIN("data"); 1512 auto cePath = create_data_user_ce_path(uuid_, userId); 1513 collectManualStatsForUser(cePath, &stats, true); 1514 auto dePath = create_data_user_de_path(uuid_, userId); 1515 collectManualStatsForUser(dePath, &stats, true); 1516 ATRACE_END(); 1517 1518 if (!uuid) { 1519 ATRACE_BEGIN("profile"); 1520 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1521 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1522 auto refProfilePath = create_primary_ref_profile_dir_path(); 1523 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1524 ATRACE_END(); 1525 } 1526 1527 ATRACE_BEGIN("external"); 1528 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1529 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1530 reinterpret_cast<char*>(&dq)) != 0) { 1531 if (errno != ESRCH) { 1532 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1533 } 1534 } else { 1535#if MEASURE_DEBUG 1536 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1537#endif 1538 extStats.dataSize += dq.dqb_curspace; 1539 } 1540 ATRACE_END(); 1541 1542 if (!uuid) { 1543 ATRACE_BEGIN("dalvik"); 1544 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1545 -1, -1, true); 1546 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, 1547 -1, -1, true); 1548 ATRACE_END(); 1549 } 1550 1551 ATRACE_BEGIN("quota"); 1552 int64_t dataSize = extStats.dataSize; 1553 for (auto appId : appIds) { 1554 if (appId >= AID_APP_START) { 1555 collectQuotaStats(device, userId, appId, &stats, &extStats); 1556 1557#if MEASURE_DEBUG 1558 // Sleep to make sure we don't lose logs 1559 usleep(1); 1560#endif 1561 } 1562 } 1563 extStats.dataSize = dataSize; 1564 ATRACE_END(); 1565 } else { 1566 ATRACE_BEGIN("obb"); 1567 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1568 calculate_tree_size(obbPath, &extStats.codeSize); 1569 ATRACE_END(); 1570 1571 ATRACE_BEGIN("code"); 1572 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1573 ATRACE_END(); 1574 1575 ATRACE_BEGIN("data"); 1576 auto cePath = create_data_user_ce_path(uuid_, userId); 1577 collectManualStatsForUser(cePath, &stats); 1578 auto dePath = create_data_user_de_path(uuid_, userId); 1579 collectManualStatsForUser(dePath, &stats); 1580 ATRACE_END(); 1581 1582 if (!uuid) { 1583 ATRACE_BEGIN("profile"); 1584 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1585 calculate_tree_size(userProfilePath, &stats.dataSize); 1586 auto refProfilePath = create_primary_ref_profile_dir_path(); 1587 calculate_tree_size(refProfilePath, &stats.codeSize); 1588 ATRACE_END(); 1589 } 1590 1591 ATRACE_BEGIN("external"); 1592 auto dataMediaPath = create_data_media_path(uuid_, userId); 1593 collectManualExternalStatsForUser(dataMediaPath, &extStats); 1594#if MEASURE_DEBUG 1595 LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " 1596 << extStats.cacheSize; 1597#endif 1598 ATRACE_END(); 1599 1600 if (!uuid) { 1601 ATRACE_BEGIN("dalvik"); 1602 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1603 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize); 1604 ATRACE_END(); 1605 } 1606 } 1607 1608 std::vector<int64_t> ret; 1609 ret.push_back(stats.codeSize); 1610 ret.push_back(stats.dataSize); 1611 ret.push_back(stats.cacheSize); 1612 ret.push_back(extStats.codeSize); 1613 ret.push_back(extStats.dataSize); 1614 ret.push_back(extStats.cacheSize); 1615#if MEASURE_DEBUG 1616 LOG(DEBUG) << "Final result " << toString(ret); 1617#endif 1618 *_aidl_return = ret; 1619 return ok(); 1620} 1621 1622binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1623 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1624 std::vector<int64_t>* _aidl_return) { 1625 ENFORCE_UID(AID_SYSTEM); 1626 CHECK_ARGUMENT_UUID(uuid); 1627 // NOTE: Locking is relaxed on this method, since it's limited to 1628 // read-only measurements without mutation. 1629 1630 // When modifying this logic, always verify using tests: 1631 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1632 1633#if MEASURE_DEBUG 1634 LOG(INFO) << "Measuring external " << userId; 1635#endif 1636 1637 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1638 1639 int64_t totalSize = 0; 1640 int64_t audioSize = 0; 1641 int64_t videoSize = 0; 1642 int64_t imageSize = 0; 1643 int64_t appSize = 0; 1644 1645 auto device = findQuotaDeviceForUuid(uuid); 1646 if (device.empty()) { 1647 flags &= ~FLAG_USE_QUOTA; 1648 } 1649 1650 if (flags & FLAG_USE_QUOTA) { 1651 struct dqblk dq; 1652 1653 ATRACE_BEGIN("quota"); 1654 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1655 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1656 reinterpret_cast<char*>(&dq)) != 0) { 1657 if (errno != ESRCH) { 1658 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1659 } 1660 } else { 1661#if MEASURE_DEBUG 1662 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1663#endif 1664 totalSize = dq.dqb_curspace; 1665 } 1666 1667 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1668 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1669 reinterpret_cast<char*>(&dq)) == 0) { 1670#if MEASURE_DEBUG 1671 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1672#endif 1673 audioSize = dq.dqb_curspace; 1674 } 1675 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1676 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1677 reinterpret_cast<char*>(&dq)) == 0) { 1678#if MEASURE_DEBUG 1679 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1680#endif 1681 videoSize = dq.dqb_curspace; 1682 } 1683 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1684 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1685 reinterpret_cast<char*>(&dq)) == 0) { 1686#if MEASURE_DEBUG 1687 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1688#endif 1689 imageSize = dq.dqb_curspace; 1690 } 1691 ATRACE_END(); 1692 1693 ATRACE_BEGIN("apps"); 1694 struct stats extStats; 1695 memset(&extStats, 0, sizeof(extStats)); 1696 for (auto appId : appIds) { 1697 if (appId >= AID_APP_START) { 1698 collectQuotaStats(device, userId, appId, nullptr, &extStats); 1699 } 1700 } 1701 appSize = extStats.dataSize; 1702 ATRACE_END(); 1703 } else { 1704 ATRACE_BEGIN("manual"); 1705 FTS *fts; 1706 FTSENT *p; 1707 auto path = create_data_media_path(uuid_, userId); 1708 char *argv[] = { (char*) path.c_str(), nullptr }; 1709 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1710 return error("Failed to fts_open " + path); 1711 } 1712 while ((p = fts_read(fts)) != NULL) { 1713 char* ext; 1714 int64_t size = (p->fts_statp->st_blocks * 512); 1715 switch (p->fts_info) { 1716 case FTS_F: 1717 // Only categorize files not belonging to apps 1718 if (p->fts_parent->fts_number == 0) { 1719 ext = strrchr(p->fts_name, '.'); 1720 if (ext != nullptr) { 1721 switch (MatchExtension(++ext)) { 1722 case AID_MEDIA_AUDIO: audioSize += size; break; 1723 case AID_MEDIA_VIDEO: videoSize += size; break; 1724 case AID_MEDIA_IMAGE: imageSize += size; break; 1725 } 1726 } 1727 } 1728 // Fall through to always count against total 1729 case FTS_D: 1730 // Ignore data belonging to specific apps 1731 p->fts_number = p->fts_parent->fts_number; 1732 if (p->fts_level == 1 && !strcmp(p->fts_name, "Android")) { 1733 p->fts_number = 1; 1734 } 1735 case FTS_DEFAULT: 1736 case FTS_SL: 1737 case FTS_SLNONE: 1738 if (p->fts_parent->fts_number == 1) { 1739 appSize += size; 1740 } 1741 totalSize += size; 1742 break; 1743 } 1744 } 1745 fts_close(fts); 1746 ATRACE_END(); 1747 } 1748 1749 std::vector<int64_t> ret; 1750 ret.push_back(totalSize); 1751 ret.push_back(audioSize); 1752 ret.push_back(videoSize); 1753 ret.push_back(imageSize); 1754 ret.push_back(appSize); 1755#if MEASURE_DEBUG 1756 LOG(DEBUG) << "Final result " << toString(ret); 1757#endif 1758 *_aidl_return = ret; 1759 return ok(); 1760} 1761 1762binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, 1763 int32_t userId, int32_t appId, int64_t cacheQuota) { 1764 ENFORCE_UID(AID_SYSTEM); 1765 CHECK_ARGUMENT_UUID(uuid); 1766 std::lock_guard<std::recursive_mutex> lock(mQuotasLock); 1767 1768 int32_t uid = multiuser_get_uid(userId, appId); 1769 mCacheQuotas[uid] = cacheQuota; 1770 1771 return ok(); 1772} 1773 1774// Dumps the contents of a profile file, using pkgname's dex files for pretty 1775// printing the result. 1776binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1777 const std::string& codePaths, bool* _aidl_return) { 1778 ENFORCE_UID(AID_SYSTEM); 1779 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1780 std::lock_guard<std::recursive_mutex> lock(mLock); 1781 1782 const char* pkgname = packageName.c_str(); 1783 const char* code_paths = codePaths.c_str(); 1784 1785 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1786 return ok(); 1787} 1788 1789// TODO: Consider returning error codes. 1790binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1791 bool* _aidl_return) { 1792 ENFORCE_UID(AID_SYSTEM); 1793 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1794 std::lock_guard<std::recursive_mutex> lock(mLock); 1795 1796 *_aidl_return = analyze_primary_profiles(uid, packageName); 1797 return ok(); 1798} 1799 1800binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1801 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1802 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1803 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1804 const std::unique_ptr<std::string>& sharedLibraries, 1805 const std::unique_ptr<std::string>& seInfo) { 1806 ENFORCE_UID(AID_SYSTEM); 1807 CHECK_ARGUMENT_UUID(uuid); 1808 if (packageName && *packageName != "*") { 1809 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1810 } 1811 std::lock_guard<std::recursive_mutex> lock(mLock); 1812 1813 const char* apk_path = apkPath.c_str(); 1814 const char* pkgname = packageName ? packageName->c_str() : "*"; 1815 const char* instruction_set = instructionSet.c_str(); 1816 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1817 const char* compiler_filter = compilerFilter.c_str(); 1818 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1819 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1820 const char* se_info = seInfo ? seInfo->c_str() : nullptr; 1821 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1822 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries, se_info); 1823 return res ? error(res, "Failed to dexopt") : ok(); 1824} 1825 1826binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1827 ENFORCE_UID(AID_SYSTEM); 1828 std::lock_guard<std::recursive_mutex> lock(mLock); 1829 1830 const char* instruction_set = instructionSet.c_str(); 1831 1832 char boot_marker_path[PKG_PATH_MAX]; 1833 sprintf(boot_marker_path, 1834 "%s/%s/%s/.booting", 1835 android_data_dir.path, 1836 DALVIK_CACHE, 1837 instruction_set); 1838 1839 ALOGV("mark_boot_complete : %s", boot_marker_path); 1840 if (unlink(boot_marker_path) != 0) { 1841 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1842 } 1843 return ok(); 1844} 1845 1846void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1847 struct stat* statbuf) 1848{ 1849 while (path[basepos] != 0) { 1850 if (path[basepos] == '/') { 1851 path[basepos] = 0; 1852 if (lstat(path, statbuf) < 0) { 1853 ALOGV("Making directory: %s\n", path); 1854 if (mkdir(path, mode) == 0) { 1855 chown(path, uid, gid); 1856 } else { 1857 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1858 } 1859 } 1860 path[basepos] = '/'; 1861 basepos++; 1862 } 1863 basepos++; 1864 } 1865} 1866 1867binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1868 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1869 const std::string& nativeLibPath32, int32_t userId) { 1870 ENFORCE_UID(AID_SYSTEM); 1871 CHECK_ARGUMENT_UUID(uuid); 1872 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1873 std::lock_guard<std::recursive_mutex> lock(mLock); 1874 1875 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1876 const char* pkgname = packageName.c_str(); 1877 const char* asecLibDir = nativeLibPath32.c_str(); 1878 struct stat s, libStat; 1879 binder::Status res = ok(); 1880 1881 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1882 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1883 1884 const char* pkgdir = _pkgdir.c_str(); 1885 const char* libsymlink = _libsymlink.c_str(); 1886 1887 if (stat(pkgdir, &s) < 0) { 1888 return error("Failed to stat " + _pkgdir); 1889 } 1890 1891 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1892 return error("Failed to chown " + _pkgdir); 1893 } 1894 1895 if (chmod(pkgdir, 0700) < 0) { 1896 res = error("Failed to chmod " + _pkgdir); 1897 goto out; 1898 } 1899 1900 if (lstat(libsymlink, &libStat) < 0) { 1901 if (errno != ENOENT) { 1902 res = error("Failed to stat " + _libsymlink); 1903 goto out; 1904 } 1905 } else { 1906 if (S_ISDIR(libStat.st_mode)) { 1907 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1908 res = error("Failed to delete " + _libsymlink); 1909 goto out; 1910 } 1911 } else if (S_ISLNK(libStat.st_mode)) { 1912 if (unlink(libsymlink) < 0) { 1913 res = error("Failed to unlink " + _libsymlink); 1914 goto out; 1915 } 1916 } 1917 } 1918 1919 if (symlink(asecLibDir, libsymlink) < 0) { 1920 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1921 goto out; 1922 } 1923 1924out: 1925 if (chmod(pkgdir, s.st_mode) < 0) { 1926 auto msg = "Failed to cleanup chmod " + _pkgdir; 1927 if (res.isOk()) { 1928 res = error(msg); 1929 } else { 1930 PLOG(ERROR) << msg; 1931 } 1932 } 1933 1934 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1935 auto msg = "Failed to cleanup chown " + _pkgdir; 1936 if (res.isOk()) { 1937 res = error(msg); 1938 } else { 1939 PLOG(ERROR) << msg; 1940 } 1941 } 1942 1943 return res; 1944} 1945 1946static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1947{ 1948 execl(kIdMapPath, kIdMapPath, "--fd", target_apk, overlay_apk, 1949 StringPrintf("%d", idmap_fd).c_str(), (char*)NULL); 1950 PLOG(ERROR) << "execl (" << kIdMapPath << ") failed"; 1951} 1952 1953static void run_verify_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1954{ 1955 execl(kIdMapPath, kIdMapPath, "--verify", target_apk, overlay_apk, 1956 StringPrintf("%d", idmap_fd).c_str(), (char*)NULL); 1957 PLOG(ERROR) << "execl (" << kIdMapPath << ") failed"; 1958} 1959 1960static bool delete_stale_idmap(const char* target_apk, const char* overlay_apk, 1961 const char* idmap_path, int32_t uid) { 1962 int idmap_fd = open(idmap_path, O_RDWR); 1963 if (idmap_fd < 0) { 1964 PLOG(ERROR) << "idmap open failed: " << idmap_path; 1965 unlink(idmap_path); 1966 return true; 1967 } 1968 1969 pid_t pid; 1970 pid = fork(); 1971 if (pid == 0) { 1972 /* child -- drop privileges before continuing */ 1973 if (setgid(uid) != 0) { 1974 LOG(ERROR) << "setgid(" << uid << ") failed during idmap"; 1975 exit(1); 1976 } 1977 if (setuid(uid) != 0) { 1978 LOG(ERROR) << "setuid(" << uid << ") failed during idmap"; 1979 exit(1); 1980 } 1981 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1982 PLOG(ERROR) << "flock(" << idmap_path << ") failed during idmap"; 1983 exit(1); 1984 } 1985 1986 run_verify_idmap(target_apk, overlay_apk, idmap_fd); 1987 exit(1); /* only if exec call to deleting stale idmap failed */ 1988 } else { 1989 int status = wait_child(pid); 1990 close(idmap_fd); 1991 1992 if (status != 0) { 1993 // Failed on verifying if idmap is made from target_apk and overlay_apk. 1994 LOG(DEBUG) << "delete stale idmap: " << idmap_path; 1995 unlink(idmap_path); 1996 return true; 1997 } 1998 } 1999 return false; 2000} 2001 2002// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 2003// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 2004static int flatten_path(const char *prefix, const char *suffix, 2005 const char *overlay_path, char *idmap_path, size_t N) 2006{ 2007 if (overlay_path == NULL || idmap_path == NULL) { 2008 return -1; 2009 } 2010 const size_t len_overlay_path = strlen(overlay_path); 2011 // will access overlay_path + 1 further below; requires absolute path 2012 if (len_overlay_path < 2 || *overlay_path != '/') { 2013 return -1; 2014 } 2015 const size_t len_idmap_root = strlen(prefix); 2016 const size_t len_suffix = strlen(suffix); 2017 if (SIZE_MAX - len_idmap_root < len_overlay_path || 2018 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 2019 // additions below would cause overflow 2020 return -1; 2021 } 2022 if (N < len_idmap_root + len_overlay_path + len_suffix) { 2023 return -1; 2024 } 2025 memset(idmap_path, 0, N); 2026 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 2027 char *ch = idmap_path + len_idmap_root; 2028 while (*ch != '\0') { 2029 if (*ch == '/') { 2030 *ch = '@'; 2031 } 2032 ++ch; 2033 } 2034 return 0; 2035} 2036 2037binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 2038 const std::string& overlayApkPath, int32_t uid) { 2039 ENFORCE_UID(AID_SYSTEM); 2040 std::lock_guard<std::recursive_mutex> lock(mLock); 2041 2042 const char* target_apk = targetApkPath.c_str(); 2043 const char* overlay_apk = overlayApkPath.c_str(); 2044 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 2045 2046 int idmap_fd = -1; 2047 char idmap_path[PATH_MAX]; 2048 struct stat idmap_stat; 2049 bool outdated = false; 2050 2051 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 2052 idmap_path, sizeof(idmap_path)) == -1) { 2053 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 2054 goto fail; 2055 } 2056 2057 if (stat(idmap_path, &idmap_stat) < 0) { 2058 outdated = true; 2059 } else { 2060 outdated = delete_stale_idmap(target_apk, overlay_apk, idmap_path, uid); 2061 } 2062 2063 if (outdated) { 2064 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 2065 } else { 2066 idmap_fd = open(idmap_path, O_RDWR); 2067 } 2068 2069 if (idmap_fd < 0) { 2070 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 2071 goto fail; 2072 } 2073 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 2074 ALOGE("idmap cannot chown '%s'\n", idmap_path); 2075 goto fail; 2076 } 2077 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 2078 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 2079 goto fail; 2080 } 2081 2082 if (!outdated) { 2083 close(idmap_fd); 2084 return ok(); 2085 } 2086 2087 pid_t pid; 2088 pid = fork(); 2089 if (pid == 0) { 2090 /* child -- drop privileges before continuing */ 2091 if (setgid(uid) != 0) { 2092 ALOGE("setgid(%d) failed during idmap\n", uid); 2093 exit(1); 2094 } 2095 if (setuid(uid) != 0) { 2096 ALOGE("setuid(%d) failed during idmap\n", uid); 2097 exit(1); 2098 } 2099 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 2100 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 2101 exit(1); 2102 } 2103 2104 run_idmap(target_apk, overlay_apk, idmap_fd); 2105 exit(1); /* only if exec call to idmap failed */ 2106 } else { 2107 int status = wait_child(pid); 2108 if (status != 0) { 2109 ALOGE("idmap failed, status=0x%04x\n", status); 2110 goto fail; 2111 } 2112 } 2113 2114 close(idmap_fd); 2115 return ok(); 2116fail: 2117 if (idmap_fd >= 0) { 2118 close(idmap_fd); 2119 unlink(idmap_path); 2120 } 2121 return error(); 2122} 2123 2124binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) { 2125 const char* overlay_apk = overlayApkPath.c_str(); 2126 char idmap_path[PATH_MAX]; 2127 2128 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 2129 idmap_path, sizeof(idmap_path)) == -1) { 2130 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 2131 return error(); 2132 } 2133 if (unlink(idmap_path) < 0) { 2134 ALOGE("couldn't unlink idmap file %s\n", idmap_path); 2135 return error(); 2136 } 2137 return ok(); 2138} 2139 2140binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 2141 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 2142 const std::string& seInfo) { 2143 ENFORCE_UID(AID_SYSTEM); 2144 CHECK_ARGUMENT_UUID(uuid); 2145 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2146 std::lock_guard<std::recursive_mutex> lock(mLock); 2147 2148 binder::Status res = ok(); 2149 2150 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 2151 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 2152 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 2153 const char* pkgName = packageName.c_str(); 2154 const char* seinfo = seInfo.c_str(); 2155 2156 uid_t uid = multiuser_get_uid(userId, appId); 2157 if (flags & FLAG_STORAGE_CE) { 2158 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 2159 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2160 res = error("restorecon failed for " + path); 2161 } 2162 } 2163 if (flags & FLAG_STORAGE_DE) { 2164 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 2165 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2166 res = error("restorecon failed for " + path); 2167 } 2168 } 2169 return res; 2170} 2171 2172binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 2173 const std::string& instructionSet) { 2174 ENFORCE_UID(AID_SYSTEM); 2175 std::lock_guard<std::recursive_mutex> lock(mLock); 2176 2177 const char* oat_dir = oatDir.c_str(); 2178 const char* instruction_set = instructionSet.c_str(); 2179 char oat_instr_dir[PKG_PATH_MAX]; 2180 2181 if (validate_apk_path(oat_dir)) { 2182 return error("Invalid path " + oatDir); 2183 } 2184 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2185 return error("Failed to prepare " + oatDir); 2186 } 2187 if (selinux_android_restorecon(oat_dir, 0)) { 2188 return error("Failed to restorecon " + oatDir); 2189 } 2190 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 2191 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2192 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 2193 } 2194 return ok(); 2195} 2196 2197binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 2198 ENFORCE_UID(AID_SYSTEM); 2199 std::lock_guard<std::recursive_mutex> lock(mLock); 2200 2201 if (validate_apk_path(packageDir.c_str())) { 2202 return error("Invalid path " + packageDir); 2203 } 2204 if (delete_dir_contents_and_dir(packageDir) != 0) { 2205 return error("Failed to delete " + packageDir); 2206 } 2207 return ok(); 2208} 2209 2210binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 2211 const std::string& fromBase, const std::string& toBase) { 2212 ENFORCE_UID(AID_SYSTEM); 2213 std::lock_guard<std::recursive_mutex> lock(mLock); 2214 2215 const char* relative_path = relativePath.c_str(); 2216 const char* from_base = fromBase.c_str(); 2217 const char* to_base = toBase.c_str(); 2218 char from_path[PKG_PATH_MAX]; 2219 char to_path[PKG_PATH_MAX]; 2220 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 2221 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 2222 2223 if (validate_apk_path_subdirs(from_path)) { 2224 return error(StringPrintf("Invalid from path %s", from_path)); 2225 } 2226 2227 if (validate_apk_path_subdirs(to_path)) { 2228 return error(StringPrintf("Invalid to path %s", to_path)); 2229 } 2230 2231 if (link(from_path, to_path) < 0) { 2232 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 2233 } 2234 2235 return ok(); 2236} 2237 2238binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 2239 const std::string& instructionSet, const std::string& outputPath) { 2240 ENFORCE_UID(AID_SYSTEM); 2241 std::lock_guard<std::recursive_mutex> lock(mLock); 2242 2243 const char* apk_path = apkPath.c_str(); 2244 const char* instruction_set = instructionSet.c_str(); 2245 const char* oat_dir = outputPath.c_str(); 2246 2247 bool success = move_ab(apk_path, instruction_set, oat_dir); 2248 return success ? ok() : error(); 2249} 2250 2251binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 2252 const std::string& instructionSet, const std::unique_ptr<std::string>& outputPath) { 2253 ENFORCE_UID(AID_SYSTEM); 2254 std::lock_guard<std::recursive_mutex> lock(mLock); 2255 2256 const char* apk_path = apkPath.c_str(); 2257 const char* instruction_set = instructionSet.c_str(); 2258 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 2259 2260 bool res = delete_odex(apk_path, instruction_set, oat_dir); 2261 return res ? ok() : error(); 2262} 2263 2264binder::Status InstalldNativeService::reconcileSecondaryDexFile( 2265 const std::string& dexPath, const std::string& packageName, int32_t uid, 2266 const std::vector<std::string>& isas, const std::unique_ptr<std::string>& volumeUuid, 2267 int32_t storage_flag, bool* _aidl_return) { 2268 ENFORCE_UID(AID_SYSTEM); 2269 CHECK_ARGUMENT_UUID(volumeUuid); 2270 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2271 2272 std::lock_guard<std::recursive_mutex> lock(mLock); 2273 bool result = android::installd::reconcile_secondary_dex_file( 2274 dexPath, packageName, uid, isas, volumeUuid, storage_flag, _aidl_return); 2275 return result ? ok() : error(); 2276} 2277 2278binder::Status InstalldNativeService::invalidateMounts() { 2279 ENFORCE_UID(AID_SYSTEM); 2280 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 2281 2282 mStorageMounts.clear(); 2283 mQuotaReverseMounts.clear(); 2284 2285 std::ifstream in("/proc/mounts"); 2286 if (!in.is_open()) { 2287 return error("Failed to read mounts"); 2288 } 2289 2290 std::string source; 2291 std::string target; 2292 std::string ignored; 2293 while (!in.eof()) { 2294 std::getline(in, source, ' '); 2295 std::getline(in, target, ' '); 2296 std::getline(in, ignored); 2297 2298#if !BYPASS_SDCARDFS 2299 if (target.compare(0, 21, "/mnt/runtime/default/") == 0) { 2300 LOG(DEBUG) << "Found storage mount " << source << " at " << target; 2301 mStorageMounts[source] = target; 2302 } 2303#endif 2304 2305#if !BYPASS_QUOTA 2306 if (source.compare(0, 11, "/dev/block/") == 0) { 2307 struct dqblk dq; 2308 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 2309 reinterpret_cast<char*>(&dq)) == 0) { 2310 LOG(DEBUG) << "Found quota mount " << source << " at " << target; 2311 mQuotaReverseMounts[target] = source; 2312 2313 // ext4 only enables DQUOT_USAGE_ENABLED by default, so we 2314 // need to kick it again to enable DQUOT_LIMITS_ENABLED. 2315 if (quotactl(QCMD(Q_QUOTAON, USRQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2316 && errno != EBUSY) { 2317 PLOG(ERROR) << "Failed to enable USRQUOTA on " << source; 2318 } 2319 if (quotactl(QCMD(Q_QUOTAON, GRPQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2320 && errno != EBUSY) { 2321 PLOG(ERROR) << "Failed to enable GRPQUOTA on " << source; 2322 } 2323 } 2324 } 2325#endif 2326 } 2327 return ok(); 2328} 2329 2330std::string InstalldNativeService::findDataMediaPath( 2331 const std::unique_ptr<std::string>& uuid, userid_t userid) { 2332 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 2333 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 2334 auto path = StringPrintf("%s/media", create_data_path(uuid_).c_str()); 2335 auto resolved = mStorageMounts[path]; 2336 if (resolved.empty()) { 2337 LOG(WARNING) << "Failed to find storage mount for " << path; 2338 resolved = path; 2339 } 2340 return StringPrintf("%s/%u", resolved.c_str(), userid); 2341} 2342 2343std::string InstalldNativeService::findQuotaDeviceForUuid( 2344 const std::unique_ptr<std::string>& uuid) { 2345 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 2346 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 2347 return mQuotaReverseMounts[path]; 2348} 2349 2350binder::Status InstalldNativeService::isQuotaSupported( 2351 const std::unique_ptr<std::string>& volumeUuid, bool* _aidl_return) { 2352 *_aidl_return = !findQuotaDeviceForUuid(volumeUuid).empty(); 2353 return ok(); 2354} 2355 2356} // namespace installd 2357} // namespace android 2358