InstalldNativeService.cpp revision 28702bb83a5d300d7ca949b49587a3300da60a3f
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#include <errno.h> 20#include <inttypes.h> 21#include <fstream> 22#include <fts.h> 23#include <regex> 24#include <stdlib.h> 25#include <string.h> 26#include <sys/capability.h> 27#include <sys/file.h> 28#include <sys/resource.h> 29#include <sys/quota.h> 30#include <sys/stat.h> 31#include <sys/statvfs.h> 32#include <sys/types.h> 33#include <sys/wait.h> 34#include <sys/xattr.h> 35#include <unistd.h> 36 37#include <android-base/logging.h> 38#include <android-base/stringprintf.h> 39#include <android-base/strings.h> 40#include <android-base/unique_fd.h> 41#include <cutils/fs.h> 42#include <cutils/properties.h> 43#include <cutils/sched_policy.h> 44#include <log/log.h> // TODO: Move everything to base/logging. 45#include <logwrap/logwrap.h> 46#include <private/android_filesystem_config.h> 47#include <selinux/android.h> 48#include <system/thread_defs.h> 49 50#include "dexopt.h" 51#include "globals.h" 52#include "installd_deps.h" 53#include "otapreopt_utils.h" 54#include "utils.h" 55 56#include "MatchExtensionGen.h" 57 58#ifndef LOG_TAG 59#define LOG_TAG "installd" 60#endif 61 62using android::base::StringPrintf; 63using std::endl; 64 65namespace android { 66namespace installd { 67 68static constexpr const char* kCpPath = "/system/bin/cp"; 69static constexpr const char* kXattrDefault = "user.default"; 70 71static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 72 73static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 74static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 75static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 76 77static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 78static constexpr const char* IDMAP_SUFFIX = "@idmap"; 79 80// NOTE: keep in sync with StorageManager 81static constexpr int FLAG_STORAGE_DE = 1 << 0; 82static constexpr int FLAG_STORAGE_CE = 1 << 1; 83 84// NOTE: keep in sync with Installer 85static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 86static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 87static constexpr int FLAG_USE_QUOTA = 1 << 12; 88 89namespace { 90 91constexpr const char* kDump = "android.permission.DUMP"; 92 93static binder::Status ok() { 94 return binder::Status::ok(); 95} 96 97static binder::Status exception(uint32_t code, const std::string& msg) { 98 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 99} 100 101static binder::Status error() { 102 return binder::Status::fromServiceSpecificError(errno); 103} 104 105static binder::Status error(const std::string& msg) { 106 PLOG(ERROR) << msg; 107 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 108} 109 110static binder::Status error(uint32_t code, const std::string& msg) { 111 LOG(ERROR) << msg << " (" << code << ")"; 112 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 113} 114 115binder::Status checkPermission(const char* permission) { 116 pid_t pid; 117 uid_t uid; 118 119 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 120 reinterpret_cast<int32_t*>(&uid))) { 121 return ok(); 122 } else { 123 return exception(binder::Status::EX_SECURITY, 124 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 125 } 126} 127 128binder::Status checkUid(uid_t expectedUid) { 129 uid_t uid = IPCThreadState::self()->getCallingUid(); 130 if (uid == expectedUid || uid == AID_ROOT) { 131 return ok(); 132 } else { 133 return exception(binder::Status::EX_SECURITY, 134 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 135 } 136} 137 138binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 139 if (!uuid || is_valid_filename(*uuid)) { 140 return ok(); 141 } else { 142 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 143 StringPrintf("UUID %s is malformed", uuid->c_str())); 144 } 145} 146 147binder::Status checkArgumentPackageName(const std::string& packageName) { 148 if (is_valid_package_name(packageName.c_str())) { 149 return ok(); 150 } else { 151 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 152 StringPrintf("Package name %s is malformed", packageName.c_str())); 153 } 154} 155 156#define ENFORCE_UID(uid) { \ 157 binder::Status status = checkUid((uid)); \ 158 if (!status.isOk()) { \ 159 return status; \ 160 } \ 161} 162 163#define CHECK_ARGUMENT_UUID(uuid) { \ 164 binder::Status status = checkArgumentUuid((uuid)); \ 165 if (!status.isOk()) { \ 166 return status; \ 167 } \ 168} 169 170#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 171 binder::Status status = \ 172 checkArgumentPackageName((packageName)); \ 173 if (!status.isOk()) { \ 174 return status; \ 175 } \ 176} 177 178} // namespace 179 180status_t InstalldNativeService::start() { 181 IPCThreadState::self()->disableBackgroundScheduling(true); 182 status_t ret = BinderService<InstalldNativeService>::publish(); 183 if (ret != android::OK) { 184 return ret; 185 } 186 sp<ProcessState> ps(ProcessState::self()); 187 ps->startThreadPool(); 188 ps->giveThreadPoolName(); 189 return android::OK; 190} 191 192status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 193 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 194 const binder::Status dump_permission = checkPermission(kDump); 195 if (!dump_permission.isOk()) { 196 out << dump_permission.toString8() << endl; 197 return PERMISSION_DENIED; 198 } 199 std::lock_guard<std::recursive_mutex> lock(mLock); 200 201 out << "installd is happy!" << endl << endl; 202 out << "Devices with quota support:" << endl; 203 for (const auto& n : mQuotaDevices) { 204 out << " " << n.first << " = " << n.second << endl; 205 } 206 out << endl; 207 out.flush(); 208 209 return NO_ERROR; 210} 211 212/** 213 * Perform restorecon of the given path, but only perform recursive restorecon 214 * if the label of that top-level file actually changed. This can save us 215 * significant time by avoiding no-op traversals of large filesystem trees. 216 */ 217static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 218 bool existing) { 219 int res = 0; 220 char* before = nullptr; 221 char* after = nullptr; 222 223 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 224 // libselinux. Not needed here. 225 226 if (lgetfilecon(path.c_str(), &before) < 0) { 227 PLOG(ERROR) << "Failed before getfilecon for " << path; 228 goto fail; 229 } 230 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 231 PLOG(ERROR) << "Failed top-level restorecon for " << path; 232 goto fail; 233 } 234 if (lgetfilecon(path.c_str(), &after) < 0) { 235 PLOG(ERROR) << "Failed after getfilecon for " << path; 236 goto fail; 237 } 238 239 // If the initial top-level restorecon above changed the label, then go 240 // back and restorecon everything recursively 241 if (strcmp(before, after)) { 242 if (existing) { 243 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 244 << path << "; running recursive restorecon"; 245 } 246 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 247 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 248 PLOG(ERROR) << "Failed recursive restorecon for " << path; 249 goto fail; 250 } 251 } 252 253 goto done; 254fail: 255 res = -1; 256done: 257 free(before); 258 free(after); 259 return res; 260} 261 262static int restorecon_app_data_lazy(const std::string& parent, const char* name, 263 const std::string& seInfo, uid_t uid, bool existing) { 264 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 265 existing); 266} 267 268static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 269 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 270 PLOG(ERROR) << "Failed to prepare " << path; 271 return -1; 272 } 273 return 0; 274} 275 276/** 277 * Prepare an app cache directory, which offers to fix-up the GID and 278 * directory mode flags during a platform upgrade. 279 */ 280static int prepare_app_cache_dir(const std::string& parent, const char* name, mode_t target_mode, 281 uid_t uid, gid_t gid) { 282 auto path = StringPrintf("%s/%s", parent.c_str(), name); 283 struct stat st; 284 if (stat(path.c_str(), &st) != 0) { 285 if (errno == ENOENT) { 286 // This is fine, just create it 287 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, gid) != 0) { 288 PLOG(ERROR) << "Failed to prepare " << path; 289 return -1; 290 } else { 291 return 0; 292 } 293 } else { 294 PLOG(ERROR) << "Failed to stat " << path; 295 return -1; 296 } 297 } 298 299 mode_t actual_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO | S_ISGID); 300 if (st.st_uid != uid) { 301 // Mismatched UID is real trouble; we can't recover 302 LOG(ERROR) << "Mismatched UID at " << path << ": found " << st.st_uid 303 << " but expected " << uid; 304 return -1; 305 } else if (st.st_gid == gid && actual_mode == target_mode) { 306 // Everything looks good! 307 return 0; 308 } 309 310 // Directory is owned correctly, but GID or mode mismatch means it's 311 // probably a platform upgrade so we need to fix them 312 FTS *fts; 313 FTSENT *p; 314 char *argv[] = { (char*) path.c_str(), nullptr }; 315 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 316 PLOG(ERROR) << "Failed to fts_open " << path; 317 return -1; 318 } 319 while ((p = fts_read(fts)) != NULL) { 320 switch (p->fts_info) { 321 case FTS_DP: 322 if (chmod(p->fts_accpath, target_mode) != 0) { 323 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 324 } 325 // Intentional fall through to also set GID 326 case FTS_F: 327 if (chown(p->fts_accpath, -1, gid) != 0) { 328 PLOG(WARNING) << "Failed to chown " << p->fts_path; 329 } 330 break; 331 case FTS_SL: 332 case FTS_SLNONE: 333 if (lchown(p->fts_accpath, -1, gid) != 0) { 334 PLOG(WARNING) << "Failed to chown " << p->fts_path; 335 } 336 break; 337 } 338 } 339 fts_close(fts); 340 return 0; 341} 342 343binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 344 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 345 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 346 ENFORCE_UID(AID_SYSTEM); 347 CHECK_ARGUMENT_UUID(uuid); 348 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 349 std::lock_guard<std::recursive_mutex> lock(mLock); 350 351 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 352 const char* pkgname = packageName.c_str(); 353 354 // Assume invalid inode unless filled in below 355 if (_aidl_return != nullptr) *_aidl_return = -1; 356 357 int32_t uid = multiuser_get_uid(userId, appId); 358 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 359 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 360 361 // If UID doesn't have a specific cache GID, use UID value 362 if (cacheGid == -1) { 363 cacheGid = uid; 364 } 365 366 if (flags & FLAG_STORAGE_CE) { 367 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 368 bool existing = (access(path.c_str(), F_OK) == 0); 369 370 if (prepare_app_dir(path, targetMode, uid) || 371 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 372 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 373 return error("Failed to prepare " + path); 374 } 375 376 // Consider restorecon over contents if label changed 377 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 378 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 379 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 380 return error("Failed to restorecon " + path); 381 } 382 383 // Remember inode numbers of cache directories so that we can clear 384 // contents while CE storage is locked 385 if (write_path_inode(path, "cache", kXattrInodeCache) || 386 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 387 return error("Failed to write_path_inode for " + path); 388 } 389 390 // And return the CE inode of the top-level data directory so we can 391 // clear contents while CE storage is locked 392 if ((_aidl_return != nullptr) 393 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 394 return error("Failed to get_path_inode for " + path); 395 } 396 } 397 if (flags & FLAG_STORAGE_DE) { 398 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 399 bool existing = (access(path.c_str(), F_OK) == 0); 400 401 if (prepare_app_dir(path, targetMode, uid) || 402 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 403 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 404 return error("Failed to prepare " + path); 405 } 406 407 // Consider restorecon over contents if label changed 408 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 409 return error("Failed to restorecon " + path); 410 } 411 412 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 413 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 414 // read-write-execute only for the app user. 415 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 416 return error("Failed to prepare " + profile_path); 417 } 418 std::string profile_file = create_primary_profile(profile_path); 419 // read-write only for the app user. 420 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 421 return error("Failed to prepare " + profile_path); 422 } 423 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 424 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 425 // profiles. 426 int shared_app_gid = multiuser_get_shared_gid(0, appId); 427 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 428 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 429 return error("Failed to prepare " + ref_profile_path); 430 } 431 } 432 } 433 return ok(); 434} 435 436binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 437 const std::string& packageName, int32_t userId, int32_t flags) { 438 ENFORCE_UID(AID_SYSTEM); 439 CHECK_ARGUMENT_UUID(uuid); 440 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 441 std::lock_guard<std::recursive_mutex> lock(mLock); 442 443 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 444 const char* pkgname = packageName.c_str(); 445 446 // This method only exists to upgrade system apps that have requested 447 // forceDeviceEncrypted, so their default storage always lives in a 448 // consistent location. This only works on non-FBE devices, since we 449 // never want to risk exposing data on a device with real CE/DE storage. 450 451 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 452 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 453 454 // If neither directory is marked as default, assume CE is default 455 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 456 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 457 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 458 return error("Failed to mark default storage " + ce_path); 459 } 460 } 461 462 // Migrate default data location if needed 463 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 464 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 465 466 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 467 LOG(WARNING) << "Requested default storage " << target 468 << " is not active; migrating from " << source; 469 if (delete_dir_contents_and_dir(target) != 0) { 470 return error("Failed to delete " + target); 471 } 472 if (rename(source.c_str(), target.c_str()) != 0) { 473 return error("Failed to rename " + source + " to " + target); 474 } 475 } 476 477 return ok(); 478} 479 480 481binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 482 ENFORCE_UID(AID_SYSTEM); 483 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 484 std::lock_guard<std::recursive_mutex> lock(mLock); 485 486 const char* pkgname = packageName.c_str(); 487 binder::Status res = ok(); 488 if (!clear_reference_profile(pkgname)) { 489 res = error("Failed to clear reference profile for " + packageName); 490 } 491 if (!clear_current_profiles(pkgname)) { 492 res = error("Failed to clear current profiles for " + packageName); 493 } 494 return res; 495} 496 497binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 498 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 499 ENFORCE_UID(AID_SYSTEM); 500 CHECK_ARGUMENT_UUID(uuid); 501 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 502 std::lock_guard<std::recursive_mutex> lock(mLock); 503 504 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 505 const char* pkgname = packageName.c_str(); 506 507 binder::Status res = ok(); 508 if (flags & FLAG_STORAGE_CE) { 509 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 510 if (flags & FLAG_CLEAR_CACHE_ONLY) { 511 path = read_path_inode(path, "cache", kXattrInodeCache); 512 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 513 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 514 } 515 if (access(path.c_str(), F_OK) == 0) { 516 if (delete_dir_contents(path) != 0) { 517 res = error("Failed to delete contents of " + path); 518 } 519 } 520 } 521 if (flags & FLAG_STORAGE_DE) { 522 std::string suffix = ""; 523 bool only_cache = false; 524 if (flags & FLAG_CLEAR_CACHE_ONLY) { 525 suffix = CACHE_DIR_POSTFIX; 526 only_cache = true; 527 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 528 suffix = CODE_CACHE_DIR_POSTFIX; 529 only_cache = true; 530 } 531 532 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 533 if (access(path.c_str(), F_OK) == 0) { 534 if (delete_dir_contents(path) != 0) { 535 res = error("Failed to delete contents of " + path); 536 } 537 } 538 if (!only_cache) { 539 if (!clear_current_profile(pkgname, userId)) { 540 res = error("Failed to clear current profile for " + packageName); 541 } 542 } 543 } 544 return res; 545} 546 547static int destroy_app_reference_profile(const char *pkgname) { 548 return delete_dir_contents_and_dir( 549 create_data_ref_profile_package_path(pkgname), 550 /*ignore_if_missing*/ true); 551} 552 553static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 554 return delete_dir_contents_and_dir( 555 create_data_user_profile_package_path(userid, pkgname), 556 /*ignore_if_missing*/ true); 557} 558 559binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 560 ENFORCE_UID(AID_SYSTEM); 561 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 562 std::lock_guard<std::recursive_mutex> lock(mLock); 563 564 const char* pkgname = packageName.c_str(); 565 binder::Status res = ok(); 566 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 567 for (auto user : users) { 568 if (destroy_app_current_profiles(pkgname, user) != 0) { 569 res = error("Failed to destroy current profiles for " + packageName); 570 } 571 } 572 if (destroy_app_reference_profile(pkgname) != 0) { 573 res = error("Failed to destroy reference profile for " + packageName); 574 } 575 return res; 576} 577 578binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 579 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 580 ENFORCE_UID(AID_SYSTEM); 581 CHECK_ARGUMENT_UUID(uuid); 582 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 583 std::lock_guard<std::recursive_mutex> lock(mLock); 584 585 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 586 const char* pkgname = packageName.c_str(); 587 588 binder::Status res = ok(); 589 if (flags & FLAG_STORAGE_CE) { 590 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 591 if (delete_dir_contents_and_dir(path) != 0) { 592 res = error("Failed to delete " + path); 593 } 594 } 595 if (flags & FLAG_STORAGE_DE) { 596 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 597 if (delete_dir_contents_and_dir(path) != 0) { 598 res = error("Failed to delete " + path); 599 } 600 destroy_app_current_profiles(pkgname, userId); 601 // TODO(calin): If the package is still installed by other users it's probably 602 // beneficial to keep the reference profile around. 603 // Verify if it's ok to do that. 604 destroy_app_reference_profile(pkgname); 605 } 606 return res; 607} 608 609binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 610 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 611 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 612 int32_t targetSdkVersion) { 613 ENFORCE_UID(AID_SYSTEM); 614 CHECK_ARGUMENT_UUID(fromUuid); 615 CHECK_ARGUMENT_UUID(toUuid); 616 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 617 std::lock_guard<std::recursive_mutex> lock(mLock); 618 619 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 620 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 621 const char* package_name = packageName.c_str(); 622 const char* data_app_name = dataAppName.c_str(); 623 624 binder::Status res = ok(); 625 std::vector<userid_t> users = get_known_users(from_uuid); 626 627 // Copy app 628 { 629 auto from = create_data_app_package_path(from_uuid, data_app_name); 630 auto to = create_data_app_package_path(to_uuid, data_app_name); 631 auto to_parent = create_data_app_path(to_uuid); 632 633 char *argv[] = { 634 (char*) kCpPath, 635 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 636 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 637 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 638 (char*) "-P", /* Do not follow symlinks [default] */ 639 (char*) "-d", /* don't dereference symlinks */ 640 (char*) from.c_str(), 641 (char*) to_parent.c_str() 642 }; 643 644 LOG(DEBUG) << "Copying " << from << " to " << to; 645 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 646 if (rc != 0) { 647 res = error(rc, "Failed copying " + from + " to " + to); 648 goto fail; 649 } 650 651 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 652 res = error("Failed to restorecon " + to); 653 goto fail; 654 } 655 } 656 657 // Copy private data for all known users 658 for (auto user : users) { 659 660 // Data source may not exist for all users; that's okay 661 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 662 if (access(from_ce.c_str(), F_OK) != 0) { 663 LOG(INFO) << "Missing source " << from_ce; 664 continue; 665 } 666 667 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 668 seInfo, targetSdkVersion, nullptr).isOk()) { 669 res = error("Failed to create package target"); 670 goto fail; 671 } 672 673 char *argv[] = { 674 (char*) kCpPath, 675 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 676 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 677 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 678 (char*) "-P", /* Do not follow symlinks [default] */ 679 (char*) "-d", /* don't dereference symlinks */ 680 nullptr, 681 nullptr 682 }; 683 684 { 685 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 686 auto to = create_data_user_de_path(to_uuid, user); 687 argv[6] = (char*) from.c_str(); 688 argv[7] = (char*) to.c_str(); 689 690 LOG(DEBUG) << "Copying " << from << " to " << to; 691 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 692 if (rc != 0) { 693 res = error(rc, "Failed copying " + from + " to " + to); 694 goto fail; 695 } 696 } 697 { 698 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 699 auto to = create_data_user_ce_path(to_uuid, user); 700 argv[6] = (char*) from.c_str(); 701 argv[7] = (char*) to.c_str(); 702 703 LOG(DEBUG) << "Copying " << from << " to " << to; 704 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 705 if (rc != 0) { 706 res = error(rc, "Failed copying " + from + " to " + to); 707 goto fail; 708 } 709 } 710 711 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 712 appId, seInfo).isOk()) { 713 res = error("Failed to restorecon"); 714 goto fail; 715 } 716 } 717 718 // We let the framework scan the new location and persist that before 719 // deleting the data in the old location; this ordering ensures that 720 // we can recover from things like battery pulls. 721 return ok(); 722 723fail: 724 // Nuke everything we might have already copied 725 { 726 auto to = create_data_app_package_path(to_uuid, data_app_name); 727 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 728 LOG(WARNING) << "Failed to rollback " << to; 729 } 730 } 731 for (auto user : users) { 732 { 733 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 734 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 735 LOG(WARNING) << "Failed to rollback " << to; 736 } 737 } 738 { 739 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 740 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 741 LOG(WARNING) << "Failed to rollback " << to; 742 } 743 } 744 } 745 return res; 746} 747 748binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 749 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 750 ENFORCE_UID(AID_SYSTEM); 751 CHECK_ARGUMENT_UUID(uuid); 752 std::lock_guard<std::recursive_mutex> lock(mLock); 753 754 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 755 if (flags & FLAG_STORAGE_DE) { 756 if (uuid_ == nullptr) { 757 if (ensure_config_user_dirs(userId) != 0) { 758 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 759 } 760 } 761 } 762 return ok(); 763} 764 765binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 766 int32_t userId, int32_t flags) { 767 ENFORCE_UID(AID_SYSTEM); 768 CHECK_ARGUMENT_UUID(uuid); 769 std::lock_guard<std::recursive_mutex> lock(mLock); 770 771 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 772 binder::Status res = ok(); 773 if (flags & FLAG_STORAGE_DE) { 774 auto path = create_data_user_de_path(uuid_, userId); 775 if (delete_dir_contents_and_dir(path, true) != 0) { 776 res = error("Failed to delete " + path); 777 } 778 if (uuid_ == nullptr) { 779 path = create_data_misc_legacy_path(userId); 780 if (delete_dir_contents_and_dir(path, true) != 0) { 781 res = error("Failed to delete " + path); 782 } 783 path = create_data_user_profile_path(userId); 784 if (delete_dir_contents_and_dir(path, true) != 0) { 785 res = error("Failed to delete " + path); 786 } 787 } 788 } 789 if (flags & FLAG_STORAGE_CE) { 790 auto path = create_data_user_ce_path(uuid_, userId); 791 if (delete_dir_contents_and_dir(path, true) != 0) { 792 res = error("Failed to delete " + path); 793 } 794 path = create_data_media_path(uuid_, userId); 795 if (delete_dir_contents_and_dir(path, true) != 0) { 796 res = error("Failed to delete " + path); 797 } 798 } 799 return res; 800} 801 802/* Try to ensure free_size bytes of storage are available. 803 * Returns 0 on success. 804 * This is rather simple-minded because doing a full LRU would 805 * be potentially memory-intensive, and without atime it would 806 * also require that apps constantly modify file metadata even 807 * when just reading from the cache, which is pretty awful. 808 */ 809binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 810 int64_t freeStorageSize) { 811 ENFORCE_UID(AID_SYSTEM); 812 CHECK_ARGUMENT_UUID(uuid); 813 std::lock_guard<std::recursive_mutex> lock(mLock); 814 815 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 816 cache_t* cache; 817 int64_t avail; 818 819 auto data_path = create_data_path(uuid_); 820 821 avail = data_disk_free(data_path); 822 if (avail < 0) { 823 return error("Failed to determine free space for " + data_path); 824 } 825 826 ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail); 827 if (avail >= freeStorageSize) { 828 return ok(); 829 } 830 831 cache = start_cache_collection(); 832 833 auto users = get_known_users(uuid_); 834 for (auto user : users) { 835 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 836 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 837 add_cache_files(cache, 838 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 839 } 840 841 clear_cache_files(data_path, cache, freeStorageSize); 842 finish_cache_collection(cache); 843 844 avail = data_disk_free(data_path); 845 if (avail >= freeStorageSize) { 846 return ok(); 847 } else { 848 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 849 freeStorageSize, data_path.c_str(), avail)); 850 } 851} 852 853binder::Status InstalldNativeService::rmdex(const std::string& codePath, 854 const std::string& instructionSet) { 855 ENFORCE_UID(AID_SYSTEM); 856 std::lock_guard<std::recursive_mutex> lock(mLock); 857 858 char dex_path[PKG_PATH_MAX]; 859 860 const char* path = codePath.c_str(); 861 const char* instruction_set = instructionSet.c_str(); 862 863 if (validate_apk_path(path) && validate_system_app_path(path)) { 864 return error("Invalid path " + codePath); 865 } 866 867 if (!create_cache_path(dex_path, path, instruction_set)) { 868 return error("Failed to create cache path for " + codePath); 869 } 870 871 ALOGV("unlink %s\n", dex_path); 872 if (unlink(dex_path) < 0) { 873 return error(StringPrintf("Failed to unlink %s", dex_path)); 874 } else { 875 return ok(); 876 } 877} 878 879struct stats { 880 int64_t codeSize; 881 int64_t dataSize; 882 int64_t cacheSize; 883}; 884 885#if MEASURE_DEBUG 886static std::string toString(std::vector<int64_t> values) { 887 std::stringstream res; 888 res << "["; 889 for (size_t i = 0; i < values.size(); i++) { 890 res << values[i]; 891 if (i < values.size() - 1) { 892 res << ","; 893 } 894 } 895 res << "]"; 896 return res.str(); 897} 898#endif 899 900static void collectQuotaStats(const std::string& device, int32_t userId, 901 int32_t appId, struct stats* stats, struct stats* extStats ATTRIBUTE_UNUSED) { 902 if (device.empty()) return; 903 904 struct dqblk dq; 905 906 uid_t uid = multiuser_get_uid(userId, appId); 907 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 908 reinterpret_cast<char*>(&dq)) != 0) { 909 if (errno != ESRCH) { 910 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 911 } 912 } else { 913#if MEASURE_DEBUG 914 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 915#endif 916 stats->dataSize += dq.dqb_curspace; 917 } 918 919 int cacheGid = multiuser_get_cache_gid(userId, appId); 920 if (cacheGid != -1) { 921 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 922 reinterpret_cast<char*>(&dq)) != 0) { 923 if (errno != ESRCH) { 924 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 925 } 926 } else { 927#if MEASURE_DEBUG 928 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 929#endif 930 stats->cacheSize += dq.dqb_curspace; 931 } 932 } 933 934 int sharedGid = multiuser_get_shared_app_gid(uid); 935 if (sharedGid != -1) { 936 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 937 reinterpret_cast<char*>(&dq)) != 0) { 938 if (errno != ESRCH) { 939 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 940 } 941 } else { 942#if MEASURE_DEBUG 943 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 944#endif 945 stats->codeSize += dq.dqb_curspace; 946 } 947 } 948 949#if MEASURE_EXTERNAL 950 // TODO: measure using external GIDs 951#endif 952} 953 954static void collectManualStats(const std::string& path, struct stats* stats) { 955 DIR *d; 956 int dfd; 957 struct dirent *de; 958 struct stat s; 959 960 d = opendir(path.c_str()); 961 if (d == nullptr) { 962 if (errno != ENOENT) { 963 PLOG(WARNING) << "Failed to open " << path; 964 } 965 return; 966 } 967 dfd = dirfd(d); 968 while ((de = readdir(d))) { 969 const char *name = de->d_name; 970 971 int64_t size = 0; 972 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 973 size = s.st_blocks * 512; 974 } 975 976 if (de->d_type == DT_DIR) { 977 if (!strcmp(name, ".")) { 978 // Don't recurse, but still count node size 979 } else if (!strcmp(name, "..")) { 980 // Don't recurse or count node size 981 continue; 982 } else { 983 // Measure all children nodes 984 size = 0; 985 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 986 } 987 988 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 989 stats->cacheSize += size; 990 } 991 } 992 993 // Legacy symlink isn't owned by app 994 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 995 continue; 996 } 997 998 // Everything found inside is considered data 999 stats->dataSize += size; 1000 } 1001 closedir(d); 1002} 1003 1004static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1005 bool exclude_apps = false) { 1006 DIR *d; 1007 int dfd; 1008 struct dirent *de; 1009 struct stat s; 1010 1011 d = opendir(path.c_str()); 1012 if (d == nullptr) { 1013 if (errno != ENOENT) { 1014 PLOG(WARNING) << "Failed to open " << path; 1015 } 1016 return; 1017 } 1018 dfd = dirfd(d); 1019 while ((de = readdir(d))) { 1020 if (de->d_type == DT_DIR) { 1021 const char *name = de->d_name; 1022 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1023 continue; 1024 } 1025 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1026 continue; 1027 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1028 continue; 1029 } else { 1030 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1031 } 1032 } 1033 } 1034 closedir(d); 1035} 1036 1037binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1038 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1039 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1040 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1041 ENFORCE_UID(AID_SYSTEM); 1042 CHECK_ARGUMENT_UUID(uuid); 1043 for (auto packageName : packageNames) { 1044 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1045 } 1046 std::lock_guard<std::recursive_mutex> lock(mLock); 1047 1048 // When modifying this logic, always verify using tests: 1049 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1050 1051#if MEASURE_DEBUG 1052 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1053#endif 1054 1055 // Here's a summary of the common storage locations across the platform, 1056 // and how they're each tagged: 1057 // 1058 // /data/app/com.example UID system 1059 // /data/app/com.example/oat UID system 1060 // /data/user/0/com.example UID u0_a10 GID u0_a10 1061 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1062 // /data/media/0/foo.txt UID u0_media_rw 1063 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1064 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1065 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1066 // /data/media/obb/com.example UID system 1067 1068 struct stats stats; 1069 struct stats extStats; 1070 memset(&stats, 0, sizeof(stats)); 1071 memset(&extStats, 0, sizeof(extStats)); 1072 1073 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1074 1075 auto device = findQuotaDeviceForUuid(uuid); 1076 if (device.empty()) { 1077 flags &= ~FLAG_USE_QUOTA; 1078 } 1079 1080 for (auto packageName : packageNames) { 1081 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1082 calculate_tree_size(obbCodePath, &extStats.codeSize); 1083 } 1084 1085 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1086 for (auto codePath : codePaths) { 1087 calculate_tree_size(codePath, &stats.codeSize, -1, 1088 multiuser_get_shared_gid(userId, appId)); 1089 } 1090 1091 collectQuotaStats(device, userId, appId, &stats, &extStats); 1092 1093 } else { 1094 for (auto codePath : codePaths) { 1095 calculate_tree_size(codePath, &stats.codeSize); 1096 } 1097 1098 for (size_t i = 0; i < packageNames.size(); i++) { 1099 const char* pkgname = packageNames[i].c_str(); 1100 1101 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1102 collectManualStats(cePath, &stats); 1103 1104 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1105 collectManualStats(dePath, &stats); 1106 1107 auto userProfilePath = create_data_user_profile_package_path(userId, pkgname); 1108 calculate_tree_size(userProfilePath, &stats.dataSize); 1109 1110 auto refProfilePath = create_data_ref_profile_package_path(pkgname); 1111 calculate_tree_size(refProfilePath, &stats.codeSize); 1112 1113#if MEASURE_EXTERNAL 1114 auto extPath = create_data_media_package_path(uuid_, userId, pkgname, "data"); 1115 collectManualStats(extPath, &extStats); 1116 1117 auto mediaPath = create_data_media_package_path(uuid_, userId, pkgname, "media"); 1118 calculate_tree_size(mediaPath, &extStats.dataSize); 1119#endif 1120 } 1121 1122 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1123 if (sharedGid != -1) { 1124 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1125 sharedGid, -1); 1126 } 1127 1128 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1129 multiuser_get_uid(userId, appId), -1); 1130 } 1131 1132 std::vector<int64_t> ret; 1133 ret.push_back(stats.codeSize); 1134 ret.push_back(stats.dataSize); 1135 ret.push_back(stats.cacheSize); 1136 ret.push_back(extStats.codeSize); 1137 ret.push_back(extStats.dataSize); 1138 ret.push_back(extStats.cacheSize); 1139#if MEASURE_DEBUG 1140 LOG(DEBUG) << "Final result " << toString(ret); 1141#endif 1142 *_aidl_return = ret; 1143 return ok(); 1144} 1145 1146binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1147 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1148 std::vector<int64_t>* _aidl_return) { 1149 ENFORCE_UID(AID_SYSTEM); 1150 CHECK_ARGUMENT_UUID(uuid); 1151 std::lock_guard<std::recursive_mutex> lock(mLock); 1152 1153 // When modifying this logic, always verify using tests: 1154 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1155 1156#if MEASURE_DEBUG 1157 LOG(INFO) << "Measuring user " << userId; 1158#endif 1159 1160 struct stats stats; 1161 struct stats extStats; 1162 memset(&stats, 0, sizeof(stats)); 1163 memset(&extStats, 0, sizeof(extStats)); 1164 1165 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1166 1167 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1168 calculate_tree_size(obbPath, &extStats.codeSize); 1169 1170 auto device = findQuotaDeviceForUuid(uuid); 1171 if (device.empty()) { 1172 flags &= ~FLAG_USE_QUOTA; 1173 } 1174 1175 if (flags & FLAG_USE_QUOTA) { 1176 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1177 1178 auto cePath = create_data_user_ce_path(uuid_, userId); 1179 collectManualStatsForUser(cePath, &stats, true); 1180 1181 auto dePath = create_data_user_de_path(uuid_, userId); 1182 collectManualStatsForUser(dePath, &stats, true); 1183 1184 auto userProfilePath = create_data_user_profile_path(userId); 1185 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1186 1187 auto refProfilePath = create_data_ref_profile_path(); 1188 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1189 1190#if MEASURE_EXTERNAL 1191 // TODO: measure external storage paths 1192#endif 1193 1194 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1195 -1, -1, true); 1196 1197 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1198 -1, -1, true); 1199 1200 for (auto appId : appIds) { 1201 if (appId >= AID_APP_START) { 1202 collectQuotaStats(device, userId, appId, &stats, &extStats); 1203#if MEASURE_DEBUG 1204 // Sleep to make sure we don't lose logs 1205 usleep(1); 1206#endif 1207 } 1208 } 1209 } else { 1210 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1211 1212 auto cePath = create_data_user_ce_path(uuid_, userId); 1213 collectManualStatsForUser(cePath, &stats); 1214 1215 auto dePath = create_data_user_de_path(uuid_, userId); 1216 collectManualStatsForUser(dePath, &stats); 1217 1218 auto userProfilePath = create_data_user_profile_path(userId); 1219 calculate_tree_size(userProfilePath, &stats.dataSize); 1220 1221 auto refProfilePath = create_data_ref_profile_path(); 1222 calculate_tree_size(refProfilePath, &stats.codeSize); 1223 1224#if MEASURE_EXTERNAL 1225 // TODO: measure external storage paths 1226#endif 1227 1228 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1229 1230 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize); 1231 } 1232 1233 std::vector<int64_t> ret; 1234 ret.push_back(stats.codeSize); 1235 ret.push_back(stats.dataSize); 1236 ret.push_back(stats.cacheSize); 1237 ret.push_back(extStats.codeSize); 1238 ret.push_back(extStats.dataSize); 1239 ret.push_back(extStats.cacheSize); 1240#if MEASURE_DEBUG 1241 LOG(DEBUG) << "Final result " << toString(ret); 1242#endif 1243 *_aidl_return = ret; 1244 return ok(); 1245} 1246 1247binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1248 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1249 ENFORCE_UID(AID_SYSTEM); 1250 CHECK_ARGUMENT_UUID(uuid); 1251 std::lock_guard<std::recursive_mutex> lock(mLock); 1252 1253 // When modifying this logic, always verify using tests: 1254 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1255 1256#if MEASURE_DEBUG 1257 LOG(INFO) << "Measuring external " << userId; 1258#endif 1259 1260 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1261 1262 int64_t totalSize = 0; 1263 int64_t audioSize = 0; 1264 int64_t videoSize = 0; 1265 int64_t imageSize = 0; 1266 1267 auto device = findQuotaDeviceForUuid(uuid); 1268 if (device.empty()) { 1269 flags &= ~FLAG_USE_QUOTA; 1270 } 1271 1272 if (flags & FLAG_USE_QUOTA) { 1273 struct dqblk dq; 1274 1275 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1276 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1277 reinterpret_cast<char*>(&dq)) != 0) { 1278 if (errno != ESRCH) { 1279 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1280 } 1281 } else { 1282#if MEASURE_DEBUG 1283 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1284#endif 1285 totalSize = dq.dqb_curspace; 1286 } 1287 1288 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1289 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1290 reinterpret_cast<char*>(&dq)) == 0) { 1291#if MEASURE_DEBUG 1292 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1293#endif 1294 audioSize = dq.dqb_curspace; 1295 } 1296 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1297 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1298 reinterpret_cast<char*>(&dq)) == 0) { 1299#if MEASURE_DEBUG 1300 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1301#endif 1302 videoSize = dq.dqb_curspace; 1303 } 1304 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1305 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1306 reinterpret_cast<char*>(&dq)) == 0) { 1307#if MEASURE_DEBUG 1308 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1309#endif 1310 imageSize = dq.dqb_curspace; 1311 } 1312 } else { 1313 FTS *fts; 1314 FTSENT *p; 1315 auto path = create_data_media_path(uuid_, userId); 1316 char *argv[] = { (char*) path.c_str(), nullptr }; 1317 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1318 return error("Failed to fts_open " + path); 1319 } 1320 while ((p = fts_read(fts)) != NULL) { 1321 char* ext; 1322 int64_t size = (p->fts_statp->st_blocks * 512); 1323 switch (p->fts_info) { 1324 case FTS_F: 1325 // Only categorize files not belonging to apps 1326 if (p->fts_statp->st_gid < AID_APP_START) { 1327 ext = strrchr(p->fts_name, '.'); 1328 if (ext != nullptr) { 1329 switch (MatchExtension(++ext)) { 1330 case AID_MEDIA_AUDIO: audioSize += size; break; 1331 case AID_MEDIA_VIDEO: videoSize += size; break; 1332 case AID_MEDIA_IMAGE: imageSize += size; break; 1333 } 1334 } 1335 } 1336 // Fall through to always count against total 1337 case FTS_D: 1338 case FTS_DEFAULT: 1339 case FTS_SL: 1340 case FTS_SLNONE: 1341 totalSize += size; 1342 break; 1343 } 1344 } 1345 fts_close(fts); 1346 } 1347 1348 std::vector<int64_t> ret; 1349 ret.push_back(totalSize); 1350 ret.push_back(audioSize); 1351 ret.push_back(videoSize); 1352 ret.push_back(imageSize); 1353#if MEASURE_DEBUG 1354 LOG(DEBUG) << "Final result " << toString(ret); 1355#endif 1356 *_aidl_return = ret; 1357 return ok(); 1358} 1359 1360// Dumps the contents of a profile file, using pkgname's dex files for pretty 1361// printing the result. 1362binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1363 const std::string& codePaths, bool* _aidl_return) { 1364 ENFORCE_UID(AID_SYSTEM); 1365 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1366 std::lock_guard<std::recursive_mutex> lock(mLock); 1367 1368 const char* pkgname = packageName.c_str(); 1369 const char* code_paths = codePaths.c_str(); 1370 1371 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1372 return ok(); 1373} 1374 1375// TODO: Consider returning error codes. 1376binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1377 bool* _aidl_return) { 1378 ENFORCE_UID(AID_SYSTEM); 1379 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1380 std::lock_guard<std::recursive_mutex> lock(mLock); 1381 1382 const char* pkgname = packageName.c_str(); 1383 *_aidl_return = analyse_profiles(uid, pkgname); 1384 return ok(); 1385} 1386 1387binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1388 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1389 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1390 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1391 const std::unique_ptr<std::string>& sharedLibraries) { 1392 ENFORCE_UID(AID_SYSTEM); 1393 CHECK_ARGUMENT_UUID(uuid); 1394 if (packageName && *packageName != "*") { 1395 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1396 } 1397 std::lock_guard<std::recursive_mutex> lock(mLock); 1398 1399 const char* apk_path = apkPath.c_str(); 1400 const char* pkgname = packageName ? packageName->c_str() : "*"; 1401 const char* instruction_set = instructionSet.c_str(); 1402 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1403 const char* compiler_filter = compilerFilter.c_str(); 1404 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1405 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1406 1407 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1408 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 1409 return res ? error(res, "Failed to dexopt") : ok(); 1410} 1411 1412binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1413 ENFORCE_UID(AID_SYSTEM); 1414 std::lock_guard<std::recursive_mutex> lock(mLock); 1415 1416 const char* instruction_set = instructionSet.c_str(); 1417 1418 char boot_marker_path[PKG_PATH_MAX]; 1419 sprintf(boot_marker_path, 1420 "%s/%s/%s/.booting", 1421 android_data_dir.path, 1422 DALVIK_CACHE, 1423 instruction_set); 1424 1425 ALOGV("mark_boot_complete : %s", boot_marker_path); 1426 if (unlink(boot_marker_path) != 0) { 1427 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1428 } 1429 return ok(); 1430} 1431 1432void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1433 struct stat* statbuf) 1434{ 1435 while (path[basepos] != 0) { 1436 if (path[basepos] == '/') { 1437 path[basepos] = 0; 1438 if (lstat(path, statbuf) < 0) { 1439 ALOGV("Making directory: %s\n", path); 1440 if (mkdir(path, mode) == 0) { 1441 chown(path, uid, gid); 1442 } else { 1443 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1444 } 1445 } 1446 path[basepos] = '/'; 1447 basepos++; 1448 } 1449 basepos++; 1450 } 1451} 1452 1453binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1454 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1455 const std::string& nativeLibPath32, int32_t userId) { 1456 ENFORCE_UID(AID_SYSTEM); 1457 CHECK_ARGUMENT_UUID(uuid); 1458 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1459 std::lock_guard<std::recursive_mutex> lock(mLock); 1460 1461 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1462 const char* pkgname = packageName.c_str(); 1463 const char* asecLibDir = nativeLibPath32.c_str(); 1464 struct stat s, libStat; 1465 binder::Status res = ok(); 1466 1467 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1468 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1469 1470 const char* pkgdir = _pkgdir.c_str(); 1471 const char* libsymlink = _libsymlink.c_str(); 1472 1473 if (stat(pkgdir, &s) < 0) { 1474 return error("Failed to stat " + _pkgdir); 1475 } 1476 1477 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1478 return error("Failed to chown " + _pkgdir); 1479 } 1480 1481 if (chmod(pkgdir, 0700) < 0) { 1482 res = error("Failed to chmod " + _pkgdir); 1483 goto out; 1484 } 1485 1486 if (lstat(libsymlink, &libStat) < 0) { 1487 if (errno != ENOENT) { 1488 res = error("Failed to stat " + _libsymlink); 1489 goto out; 1490 } 1491 } else { 1492 if (S_ISDIR(libStat.st_mode)) { 1493 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1494 res = error("Failed to delete " + _libsymlink); 1495 goto out; 1496 } 1497 } else if (S_ISLNK(libStat.st_mode)) { 1498 if (unlink(libsymlink) < 0) { 1499 res = error("Failed to unlink " + _libsymlink); 1500 goto out; 1501 } 1502 } 1503 } 1504 1505 if (symlink(asecLibDir, libsymlink) < 0) { 1506 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1507 goto out; 1508 } 1509 1510out: 1511 if (chmod(pkgdir, s.st_mode) < 0) { 1512 auto msg = "Failed to cleanup chmod " + _pkgdir; 1513 if (res.isOk()) { 1514 res = error(msg); 1515 } else { 1516 PLOG(ERROR) << msg; 1517 } 1518 } 1519 1520 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1521 auto msg = "Failed to cleanup chown " + _pkgdir; 1522 if (res.isOk()) { 1523 res = error(msg); 1524 } else { 1525 PLOG(ERROR) << msg; 1526 } 1527 } 1528 1529 return res; 1530} 1531 1532static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1533{ 1534 static const char *IDMAP_BIN = "/system/bin/idmap"; 1535 static const size_t MAX_INT_LEN = 32; 1536 char idmap_str[MAX_INT_LEN]; 1537 1538 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1539 1540 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1541 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1542} 1543 1544// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1545// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1546static int flatten_path(const char *prefix, const char *suffix, 1547 const char *overlay_path, char *idmap_path, size_t N) 1548{ 1549 if (overlay_path == NULL || idmap_path == NULL) { 1550 return -1; 1551 } 1552 const size_t len_overlay_path = strlen(overlay_path); 1553 // will access overlay_path + 1 further below; requires absolute path 1554 if (len_overlay_path < 2 || *overlay_path != '/') { 1555 return -1; 1556 } 1557 const size_t len_idmap_root = strlen(prefix); 1558 const size_t len_suffix = strlen(suffix); 1559 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1560 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1561 // additions below would cause overflow 1562 return -1; 1563 } 1564 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1565 return -1; 1566 } 1567 memset(idmap_path, 0, N); 1568 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1569 char *ch = idmap_path + len_idmap_root; 1570 while (*ch != '\0') { 1571 if (*ch == '/') { 1572 *ch = '@'; 1573 } 1574 ++ch; 1575 } 1576 return 0; 1577} 1578 1579binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1580 const std::string& overlayApkPath, int32_t uid) { 1581 ENFORCE_UID(AID_SYSTEM); 1582 std::lock_guard<std::recursive_mutex> lock(mLock); 1583 1584 const char* target_apk = targetApkPath.c_str(); 1585 const char* overlay_apk = overlayApkPath.c_str(); 1586 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1587 1588 int idmap_fd = -1; 1589 char idmap_path[PATH_MAX]; 1590 1591 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1592 idmap_path, sizeof(idmap_path)) == -1) { 1593 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1594 goto fail; 1595 } 1596 1597 unlink(idmap_path); 1598 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1599 if (idmap_fd < 0) { 1600 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1601 goto fail; 1602 } 1603 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1604 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1605 goto fail; 1606 } 1607 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1608 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1609 goto fail; 1610 } 1611 1612 pid_t pid; 1613 pid = fork(); 1614 if (pid == 0) { 1615 /* child -- drop privileges before continuing */ 1616 if (setgid(uid) != 0) { 1617 ALOGE("setgid(%d) failed during idmap\n", uid); 1618 exit(1); 1619 } 1620 if (setuid(uid) != 0) { 1621 ALOGE("setuid(%d) failed during idmap\n", uid); 1622 exit(1); 1623 } 1624 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1625 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1626 exit(1); 1627 } 1628 1629 run_idmap(target_apk, overlay_apk, idmap_fd); 1630 exit(1); /* only if exec call to idmap failed */ 1631 } else { 1632 int status = wait_child(pid); 1633 if (status != 0) { 1634 ALOGE("idmap failed, status=0x%04x\n", status); 1635 goto fail; 1636 } 1637 } 1638 1639 close(idmap_fd); 1640 return ok(); 1641fail: 1642 if (idmap_fd >= 0) { 1643 close(idmap_fd); 1644 unlink(idmap_path); 1645 } 1646 return error(); 1647} 1648 1649binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1650 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1651 const std::string& seInfo) { 1652 ENFORCE_UID(AID_SYSTEM); 1653 CHECK_ARGUMENT_UUID(uuid); 1654 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1655 std::lock_guard<std::recursive_mutex> lock(mLock); 1656 1657 binder::Status res = ok(); 1658 1659 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1660 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1661 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1662 const char* pkgName = packageName.c_str(); 1663 const char* seinfo = seInfo.c_str(); 1664 1665 uid_t uid = multiuser_get_uid(userId, appId); 1666 if (flags & FLAG_STORAGE_CE) { 1667 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1668 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1669 res = error("restorecon failed for " + path); 1670 } 1671 } 1672 if (flags & FLAG_STORAGE_DE) { 1673 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1674 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1675 res = error("restorecon failed for " + path); 1676 } 1677 } 1678 return res; 1679} 1680 1681binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1682 const std::string& instructionSet) { 1683 ENFORCE_UID(AID_SYSTEM); 1684 std::lock_guard<std::recursive_mutex> lock(mLock); 1685 1686 const char* oat_dir = oatDir.c_str(); 1687 const char* instruction_set = instructionSet.c_str(); 1688 char oat_instr_dir[PKG_PATH_MAX]; 1689 1690 if (validate_apk_path(oat_dir)) { 1691 return error("Invalid path " + oatDir); 1692 } 1693 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1694 return error("Failed to prepare " + oatDir); 1695 } 1696 if (selinux_android_restorecon(oat_dir, 0)) { 1697 return error("Failed to restorecon " + oatDir); 1698 } 1699 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1700 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1701 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1702 } 1703 return ok(); 1704} 1705 1706binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1707 ENFORCE_UID(AID_SYSTEM); 1708 std::lock_guard<std::recursive_mutex> lock(mLock); 1709 1710 if (validate_apk_path(packageDir.c_str())) { 1711 return error("Invalid path " + packageDir); 1712 } 1713 if (delete_dir_contents_and_dir(packageDir) != 0) { 1714 return error("Failed to delete " + packageDir); 1715 } 1716 return ok(); 1717} 1718 1719binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1720 const std::string& fromBase, const std::string& toBase) { 1721 ENFORCE_UID(AID_SYSTEM); 1722 std::lock_guard<std::recursive_mutex> lock(mLock); 1723 1724 const char* relative_path = relativePath.c_str(); 1725 const char* from_base = fromBase.c_str(); 1726 const char* to_base = toBase.c_str(); 1727 char from_path[PKG_PATH_MAX]; 1728 char to_path[PKG_PATH_MAX]; 1729 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1730 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1731 1732 if (validate_apk_path_subdirs(from_path)) { 1733 return error(StringPrintf("Invalid from path %s", from_path)); 1734 } 1735 1736 if (validate_apk_path_subdirs(to_path)) { 1737 return error(StringPrintf("Invalid to path %s", to_path)); 1738 } 1739 1740 if (link(from_path, to_path) < 0) { 1741 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1742 } 1743 1744 return ok(); 1745} 1746 1747binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1748 const std::string& instructionSet, const std::string& outputPath) { 1749 ENFORCE_UID(AID_SYSTEM); 1750 std::lock_guard<std::recursive_mutex> lock(mLock); 1751 1752 const char* apk_path = apkPath.c_str(); 1753 const char* instruction_set = instructionSet.c_str(); 1754 const char* oat_dir = outputPath.c_str(); 1755 1756 bool success = move_ab(apk_path, instruction_set, oat_dir); 1757 return success ? ok() : error(); 1758} 1759 1760binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1761 const std::string& instructionSet, const std::string& outputPath) { 1762 ENFORCE_UID(AID_SYSTEM); 1763 std::lock_guard<std::recursive_mutex> lock(mLock); 1764 1765 const char* apk_path = apkPath.c_str(); 1766 const char* instruction_set = instructionSet.c_str(); 1767 const char* oat_dir = outputPath.c_str(); 1768 1769 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1770 return res ? ok() : error(); 1771} 1772 1773binder::Status InstalldNativeService::invalidateMounts() { 1774 ENFORCE_UID(AID_SYSTEM); 1775 std::lock_guard<std::recursive_mutex> lock(mLock); 1776 1777 mQuotaDevices.clear(); 1778 1779 std::ifstream in("/proc/mounts"); 1780 if (!in.is_open()) { 1781 return error("Failed to read mounts"); 1782 } 1783 1784 std::string source; 1785 std::string target; 1786 std::string ignored; 1787 struct dqblk dq; 1788 while (!in.eof()) { 1789 std::getline(in, source, ' '); 1790 std::getline(in, target, ' '); 1791 std::getline(in, ignored); 1792 1793 if (source.compare(0, 11, "/dev/block/") == 0) { 1794 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 1795 reinterpret_cast<char*>(&dq)) == 0) { 1796 LOG(DEBUG) << "Found " << source << " with quota"; 1797 mQuotaDevices[target] = source; 1798 } 1799 } 1800 } 1801 return ok(); 1802} 1803 1804std::string InstalldNativeService::findQuotaDeviceForUuid( 1805 const std::unique_ptr<std::string>& uuid) { 1806 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 1807 return mQuotaDevices[path]; 1808} 1809 1810} // namespace installd 1811} // namespace android 1812