InstalldNativeService.cpp revision 66b1a12e7a120f85042669bb58f1db864616b506
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 char* PKG_LIB_POSTFIX = "/lib"; 72static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 73static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 74 75static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 76static constexpr const char* IDMAP_SUFFIX = "@idmap"; 77 78// NOTE: keep in sync with StorageManager 79static constexpr int FLAG_STORAGE_DE = 1 << 0; 80static constexpr int FLAG_STORAGE_CE = 1 << 1; 81 82// NOTE: keep in sync with Installer 83static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 84static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 85static constexpr int FLAG_USE_QUOTA = 1 << 12; 86 87#define MIN_RESTRICTED_HOME_SDK_VERSION 24 // > M 88namespace { 89 90constexpr const char* kDump = "android.permission.DUMP"; 91 92static binder::Status ok() { 93 return binder::Status::ok(); 94} 95 96static binder::Status exception(uint32_t code, const std::string& msg) { 97 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 98} 99 100static binder::Status error() { 101 return binder::Status::fromServiceSpecificError(errno); 102} 103 104static binder::Status error(const std::string& msg) { 105 PLOG(ERROR) << msg; 106 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 107} 108 109static binder::Status error(uint32_t code, const std::string& msg) { 110 LOG(ERROR) << msg << " (" << code << ")"; 111 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 112} 113 114binder::Status checkPermission(const char* permission) { 115 pid_t pid; 116 uid_t uid; 117 118 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 119 reinterpret_cast<int32_t*>(&uid))) { 120 return ok(); 121 } else { 122 return exception(binder::Status::EX_SECURITY, 123 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 124 } 125} 126 127binder::Status checkUid(uid_t expectedUid) { 128 uid_t uid = IPCThreadState::self()->getCallingUid(); 129 if (uid == expectedUid || uid == AID_ROOT) { 130 return ok(); 131 } else { 132 return exception(binder::Status::EX_SECURITY, 133 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 134 } 135} 136 137binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 138 if (!uuid || is_valid_filename(*uuid)) { 139 return ok(); 140 } else { 141 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 142 StringPrintf("UUID %s is malformed", uuid->c_str())); 143 } 144} 145 146binder::Status checkArgumentPackageName(const std::string& packageName) { 147 if (is_valid_package_name(packageName.c_str())) { 148 return ok(); 149 } else { 150 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 151 StringPrintf("Package name %s is malformed", packageName.c_str())); 152 } 153} 154 155#define ENFORCE_UID(uid) { \ 156 binder::Status status = checkUid((uid)); \ 157 if (!status.isOk()) { \ 158 return status; \ 159 } \ 160} 161 162#define CHECK_ARGUMENT_UUID(uuid) { \ 163 binder::Status status = checkArgumentUuid((uuid)); \ 164 if (!status.isOk()) { \ 165 return status; \ 166 } \ 167} 168 169#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 170 binder::Status status = \ 171 checkArgumentPackageName((packageName)); \ 172 if (!status.isOk()) { \ 173 return status; \ 174 } \ 175} 176 177} // namespace 178 179status_t InstalldNativeService::start() { 180 IPCThreadState::self()->disableBackgroundScheduling(true); 181 status_t ret = BinderService<InstalldNativeService>::publish(); 182 if (ret != android::OK) { 183 return ret; 184 } 185 sp<ProcessState> ps(ProcessState::self()); 186 ps->startThreadPool(); 187 ps->giveThreadPoolName(); 188 return android::OK; 189} 190 191status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 192 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 193 const binder::Status dump_permission = checkPermission(kDump); 194 if (!dump_permission.isOk()) { 195 out << dump_permission.toString8() << endl; 196 return PERMISSION_DENIED; 197 } 198 std::lock_guard<std::recursive_mutex> lock(mLock); 199 200 out << "installd is happy!" << endl << endl; 201 out << "Devices with quota support:" << endl; 202 for (const auto& n : mQuotaDevices) { 203 out << " " << n.first << " = " << n.second << endl; 204 } 205 out << endl; 206 out.flush(); 207 208 return NO_ERROR; 209} 210 211/** 212 * Perform restorecon of the given path, but only perform recursive restorecon 213 * if the label of that top-level file actually changed. This can save us 214 * significant time by avoiding no-op traversals of large filesystem trees. 215 */ 216static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 217 bool existing) { 218 int res = 0; 219 char* before = nullptr; 220 char* after = nullptr; 221 222 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 223 // libselinux. Not needed here. 224 225 if (lgetfilecon(path.c_str(), &before) < 0) { 226 PLOG(ERROR) << "Failed before getfilecon for " << path; 227 goto fail; 228 } 229 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 230 PLOG(ERROR) << "Failed top-level restorecon for " << path; 231 goto fail; 232 } 233 if (lgetfilecon(path.c_str(), &after) < 0) { 234 PLOG(ERROR) << "Failed after getfilecon for " << path; 235 goto fail; 236 } 237 238 // If the initial top-level restorecon above changed the label, then go 239 // back and restorecon everything recursively 240 if (strcmp(before, after)) { 241 if (existing) { 242 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 243 << path << "; running recursive restorecon"; 244 } 245 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 246 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 247 PLOG(ERROR) << "Failed recursive restorecon for " << path; 248 goto fail; 249 } 250 } 251 252 goto done; 253fail: 254 res = -1; 255done: 256 free(before); 257 free(after); 258 return res; 259} 260 261static int restorecon_app_data_lazy(const std::string& parent, const char* name, 262 const std::string& seInfo, uid_t uid, bool existing) { 263 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 264 existing); 265} 266 267static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 268 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 269 PLOG(ERROR) << "Failed to prepare " << path; 270 return -1; 271 } 272 return 0; 273} 274 275/** 276 * Prepare an app cache directory, which offers to fix-up the GID and 277 * directory mode flags during a platform upgrade. 278 */ 279static int prepare_app_cache_dir(const std::string& parent, const char* name, mode_t target_mode, 280 uid_t uid, gid_t gid) { 281 auto path = StringPrintf("%s/%s", parent.c_str(), name); 282 struct stat st; 283 if (stat(path.c_str(), &st) != 0) { 284 if (errno == ENOENT) { 285 // This is fine, just create it 286 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, gid) != 0) { 287 PLOG(ERROR) << "Failed to prepare " << path; 288 return -1; 289 } else { 290 return 0; 291 } 292 } else { 293 PLOG(ERROR) << "Failed to stat " << path; 294 return -1; 295 } 296 } 297 298 mode_t actual_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO | S_ISGID); 299 if (st.st_uid != uid) { 300 // Mismatched UID is real trouble; we can't recover 301 LOG(ERROR) << "Mismatched UID at " << path << ": found " << st.st_uid 302 << " but expected " << uid; 303 return -1; 304 } else if (st.st_gid == gid && actual_mode == target_mode) { 305 // Everything looks good! 306 return 0; 307 } 308 309 // Directory is owned correctly, but GID or mode mismatch means it's 310 // probably a platform upgrade so we need to fix them 311 FTS *fts; 312 FTSENT *p; 313 char *argv[] = { (char*) path.c_str(), nullptr }; 314 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 315 PLOG(ERROR) << "Failed to fts_open " << path; 316 return -1; 317 } 318 while ((p = fts_read(fts)) != NULL) { 319 switch (p->fts_info) { 320 case FTS_DP: 321 if (chmod(p->fts_accpath, target_mode) != 0) { 322 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 323 } 324 // Intentional fall through to also set GID 325 case FTS_F: 326 if (chown(p->fts_accpath, -1, gid) != 0) { 327 PLOG(WARNING) << "Failed to chown " << p->fts_path; 328 } 329 break; 330 case FTS_SL: 331 case FTS_SLNONE: 332 if (lchown(p->fts_accpath, -1, gid) != 0) { 333 PLOG(WARNING) << "Failed to chown " << p->fts_path; 334 } 335 break; 336 } 337 } 338 fts_close(fts); 339 return 0; 340} 341 342binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 343 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 344 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 345 ENFORCE_UID(AID_SYSTEM); 346 CHECK_ARGUMENT_UUID(uuid); 347 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 348 std::lock_guard<std::recursive_mutex> lock(mLock); 349 350 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 351 const char* pkgname = packageName.c_str(); 352 353 // Assume invalid inode unless filled in below 354 if (_aidl_return != nullptr) *_aidl_return = -1; 355 356 int32_t uid = multiuser_get_uid(userId, appId); 357 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 358 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 359 360 // If UID doesn't have a specific cache GID, use UID value 361 if (cacheGid == -1) { 362 cacheGid = uid; 363 } 364 365 if (flags & FLAG_STORAGE_CE) { 366 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 367 bool existing = (access(path.c_str(), F_OK) == 0); 368 369 if (prepare_app_dir(path, targetMode, uid) || 370 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 371 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 372 return error("Failed to prepare " + path); 373 } 374 375 // Consider restorecon over contents if label changed 376 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 377 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 378 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 379 return error("Failed to restorecon " + path); 380 } 381 382 // Remember inode numbers of cache directories so that we can clear 383 // contents while CE storage is locked 384 if (write_path_inode(path, "cache", kXattrInodeCache) || 385 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 386 return error("Failed to write_path_inode for " + path); 387 } 388 389 // And return the CE inode of the top-level data directory so we can 390 // clear contents while CE storage is locked 391 if ((_aidl_return != nullptr) 392 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 393 return error("Failed to get_path_inode for " + path); 394 } 395 } 396 if (flags & FLAG_STORAGE_DE) { 397 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 398 bool existing = (access(path.c_str(), F_OK) == 0); 399 400 if (prepare_app_dir(path, targetMode, uid) || 401 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 402 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 403 return error("Failed to prepare " + path); 404 } 405 406 // Consider restorecon over contents if label changed 407 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 408 return error("Failed to restorecon " + path); 409 } 410 411 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 412 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 413 // read-write-execute only for the app user. 414 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 415 return error("Failed to prepare " + profile_path); 416 } 417 std::string profile_file = create_primary_profile(profile_path); 418 // read-write only for the app user. 419 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 420 return error("Failed to prepare " + profile_path); 421 } 422 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 423 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 424 // profiles. 425 int shared_app_gid = multiuser_get_shared_gid(0, appId); 426 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 427 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 428 return error("Failed to prepare " + ref_profile_path); 429 } 430 } 431 } 432 return ok(); 433} 434 435binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 436 const std::string& packageName, int32_t userId, int32_t flags) { 437 ENFORCE_UID(AID_SYSTEM); 438 CHECK_ARGUMENT_UUID(uuid); 439 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 440 std::lock_guard<std::recursive_mutex> lock(mLock); 441 442 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 443 const char* pkgname = packageName.c_str(); 444 445 // This method only exists to upgrade system apps that have requested 446 // forceDeviceEncrypted, so their default storage always lives in a 447 // consistent location. This only works on non-FBE devices, since we 448 // never want to risk exposing data on a device with real CE/DE storage. 449 450 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 451 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 452 453 // If neither directory is marked as default, assume CE is default 454 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 455 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 456 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 457 return error("Failed to mark default storage " + ce_path); 458 } 459 } 460 461 // Migrate default data location if needed 462 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 463 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 464 465 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 466 LOG(WARNING) << "Requested default storage " << target 467 << " is not active; migrating from " << source; 468 if (delete_dir_contents_and_dir(target) != 0) { 469 return error("Failed to delete " + target); 470 } 471 if (rename(source.c_str(), target.c_str()) != 0) { 472 return error("Failed to rename " + source + " to " + target); 473 } 474 } 475 476 return ok(); 477} 478 479 480binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 481 ENFORCE_UID(AID_SYSTEM); 482 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 483 std::lock_guard<std::recursive_mutex> lock(mLock); 484 485 const char* pkgname = packageName.c_str(); 486 binder::Status res = ok(); 487 if (!clear_reference_profile(pkgname)) { 488 res = error("Failed to clear reference profile for " + packageName); 489 } 490 if (!clear_current_profiles(pkgname)) { 491 res = error("Failed to clear current profiles for " + packageName); 492 } 493 return res; 494} 495 496binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 497 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 498 ENFORCE_UID(AID_SYSTEM); 499 CHECK_ARGUMENT_UUID(uuid); 500 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 501 std::lock_guard<std::recursive_mutex> lock(mLock); 502 503 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 504 const char* pkgname = packageName.c_str(); 505 506 binder::Status res = ok(); 507 if (flags & FLAG_STORAGE_CE) { 508 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 509 if (flags & FLAG_CLEAR_CACHE_ONLY) { 510 path = read_path_inode(path, "cache", kXattrInodeCache); 511 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 512 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 513 } 514 if (access(path.c_str(), F_OK) == 0) { 515 if (delete_dir_contents(path) != 0) { 516 res = error("Failed to delete contents of " + path); 517 } 518 } 519 } 520 if (flags & FLAG_STORAGE_DE) { 521 std::string suffix = ""; 522 bool only_cache = false; 523 if (flags & FLAG_CLEAR_CACHE_ONLY) { 524 suffix = CACHE_DIR_POSTFIX; 525 only_cache = true; 526 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 527 suffix = CODE_CACHE_DIR_POSTFIX; 528 only_cache = true; 529 } 530 531 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 532 if (access(path.c_str(), F_OK) == 0) { 533 if (delete_dir_contents(path) != 0) { 534 res = error("Failed to delete contents of " + path); 535 } 536 } 537 if (!only_cache) { 538 if (!clear_current_profile(pkgname, userId)) { 539 res = error("Failed to clear current profile for " + packageName); 540 } 541 } 542 } 543 return res; 544} 545 546static int destroy_app_reference_profile(const char *pkgname) { 547 return delete_dir_contents_and_dir( 548 create_data_ref_profile_package_path(pkgname), 549 /*ignore_if_missing*/ true); 550} 551 552static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 553 return delete_dir_contents_and_dir( 554 create_data_user_profile_package_path(userid, pkgname), 555 /*ignore_if_missing*/ true); 556} 557 558binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 559 ENFORCE_UID(AID_SYSTEM); 560 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 561 std::lock_guard<std::recursive_mutex> lock(mLock); 562 563 const char* pkgname = packageName.c_str(); 564 binder::Status res = ok(); 565 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 566 for (auto user : users) { 567 if (destroy_app_current_profiles(pkgname, user) != 0) { 568 res = error("Failed to destroy current profiles for " + packageName); 569 } 570 } 571 if (destroy_app_reference_profile(pkgname) != 0) { 572 res = error("Failed to destroy reference profile for " + packageName); 573 } 574 return res; 575} 576 577binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 578 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 579 ENFORCE_UID(AID_SYSTEM); 580 CHECK_ARGUMENT_UUID(uuid); 581 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 582 std::lock_guard<std::recursive_mutex> lock(mLock); 583 584 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 585 const char* pkgname = packageName.c_str(); 586 587 binder::Status res = ok(); 588 if (flags & FLAG_STORAGE_CE) { 589 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 590 if (delete_dir_contents_and_dir(path) != 0) { 591 res = error("Failed to delete " + path); 592 } 593 } 594 if (flags & FLAG_STORAGE_DE) { 595 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 596 if (delete_dir_contents_and_dir(path) != 0) { 597 res = error("Failed to delete " + path); 598 } 599 destroy_app_current_profiles(pkgname, userId); 600 // TODO(calin): If the package is still installed by other users it's probably 601 // beneficial to keep the reference profile around. 602 // Verify if it's ok to do that. 603 destroy_app_reference_profile(pkgname); 604 } 605 return res; 606} 607 608binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 609 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 610 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 611 int32_t targetSdkVersion) { 612 ENFORCE_UID(AID_SYSTEM); 613 CHECK_ARGUMENT_UUID(fromUuid); 614 CHECK_ARGUMENT_UUID(toUuid); 615 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 616 std::lock_guard<std::recursive_mutex> lock(mLock); 617 618 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 619 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 620 const char* package_name = packageName.c_str(); 621 const char* data_app_name = dataAppName.c_str(); 622 623 binder::Status res = ok(); 624 std::vector<userid_t> users = get_known_users(from_uuid); 625 626 // Copy app 627 { 628 auto from = create_data_app_package_path(from_uuid, data_app_name); 629 auto to = create_data_app_package_path(to_uuid, data_app_name); 630 auto to_parent = create_data_app_path(to_uuid); 631 632 char *argv[] = { 633 (char*) kCpPath, 634 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 635 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 636 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 637 (char*) "-P", /* Do not follow symlinks [default] */ 638 (char*) "-d", /* don't dereference symlinks */ 639 (char*) from.c_str(), 640 (char*) to_parent.c_str() 641 }; 642 643 LOG(DEBUG) << "Copying " << from << " to " << to; 644 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 645 if (rc != 0) { 646 res = error(rc, "Failed copying " + from + " to " + to); 647 goto fail; 648 } 649 650 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 651 res = error("Failed to restorecon " + to); 652 goto fail; 653 } 654 } 655 656 // Copy private data for all known users 657 for (auto user : users) { 658 659 // Data source may not exist for all users; that's okay 660 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 661 if (access(from_ce.c_str(), F_OK) != 0) { 662 LOG(INFO) << "Missing source " << from_ce; 663 continue; 664 } 665 666 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 667 seInfo, targetSdkVersion, nullptr).isOk()) { 668 res = error("Failed to create package target"); 669 goto fail; 670 } 671 672 char *argv[] = { 673 (char*) kCpPath, 674 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 675 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 676 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 677 (char*) "-P", /* Do not follow symlinks [default] */ 678 (char*) "-d", /* don't dereference symlinks */ 679 nullptr, 680 nullptr 681 }; 682 683 { 684 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 685 auto to = create_data_user_de_path(to_uuid, user); 686 argv[6] = (char*) from.c_str(); 687 argv[7] = (char*) to.c_str(); 688 689 LOG(DEBUG) << "Copying " << from << " to " << to; 690 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 691 if (rc != 0) { 692 res = error(rc, "Failed copying " + from + " to " + to); 693 goto fail; 694 } 695 } 696 { 697 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 698 auto to = create_data_user_ce_path(to_uuid, user); 699 argv[6] = (char*) from.c_str(); 700 argv[7] = (char*) to.c_str(); 701 702 LOG(DEBUG) << "Copying " << from << " to " << to; 703 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 704 if (rc != 0) { 705 res = error(rc, "Failed copying " + from + " to " + to); 706 goto fail; 707 } 708 } 709 710 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 711 appId, seInfo).isOk()) { 712 res = error("Failed to restorecon"); 713 goto fail; 714 } 715 } 716 717 // We let the framework scan the new location and persist that before 718 // deleting the data in the old location; this ordering ensures that 719 // we can recover from things like battery pulls. 720 return ok(); 721 722fail: 723 // Nuke everything we might have already copied 724 { 725 auto to = create_data_app_package_path(to_uuid, data_app_name); 726 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 727 LOG(WARNING) << "Failed to rollback " << to; 728 } 729 } 730 for (auto user : users) { 731 { 732 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 733 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 734 LOG(WARNING) << "Failed to rollback " << to; 735 } 736 } 737 { 738 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 739 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 740 LOG(WARNING) << "Failed to rollback " << to; 741 } 742 } 743 } 744 return res; 745} 746 747binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 748 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 749 ENFORCE_UID(AID_SYSTEM); 750 CHECK_ARGUMENT_UUID(uuid); 751 std::lock_guard<std::recursive_mutex> lock(mLock); 752 753 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 754 if (flags & FLAG_STORAGE_DE) { 755 if (uuid_ == nullptr) { 756 if (ensure_config_user_dirs(userId) != 0) { 757 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 758 } 759 } 760 } 761 return ok(); 762} 763 764binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 765 int32_t userId, int32_t flags) { 766 ENFORCE_UID(AID_SYSTEM); 767 CHECK_ARGUMENT_UUID(uuid); 768 std::lock_guard<std::recursive_mutex> lock(mLock); 769 770 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 771 binder::Status res = ok(); 772 if (flags & FLAG_STORAGE_DE) { 773 auto path = create_data_user_de_path(uuid_, userId); 774 if (delete_dir_contents_and_dir(path, true) != 0) { 775 res = error("Failed to delete " + path); 776 } 777 if (uuid_ == nullptr) { 778 path = create_data_misc_legacy_path(userId); 779 if (delete_dir_contents_and_dir(path, true) != 0) { 780 res = error("Failed to delete " + path); 781 } 782 path = create_data_user_profile_path(userId); 783 if (delete_dir_contents_and_dir(path, true) != 0) { 784 res = error("Failed to delete " + path); 785 } 786 } 787 } 788 if (flags & FLAG_STORAGE_CE) { 789 auto path = create_data_user_ce_path(uuid_, userId); 790 if (delete_dir_contents_and_dir(path, true) != 0) { 791 res = error("Failed to delete " + path); 792 } 793 path = create_data_media_path(uuid_, userId); 794 if (delete_dir_contents_and_dir(path, true) != 0) { 795 res = error("Failed to delete " + path); 796 } 797 } 798 return res; 799} 800 801/* Try to ensure free_size bytes of storage are available. 802 * Returns 0 on success. 803 * This is rather simple-minded because doing a full LRU would 804 * be potentially memory-intensive, and without atime it would 805 * also require that apps constantly modify file metadata even 806 * when just reading from the cache, which is pretty awful. 807 */ 808binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 809 int64_t freeStorageSize) { 810 ENFORCE_UID(AID_SYSTEM); 811 CHECK_ARGUMENT_UUID(uuid); 812 std::lock_guard<std::recursive_mutex> lock(mLock); 813 814 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 815 cache_t* cache; 816 int64_t avail; 817 818 auto data_path = create_data_path(uuid_); 819 820 avail = data_disk_free(data_path); 821 if (avail < 0) { 822 return error("Failed to determine free space for " + data_path); 823 } 824 825 ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail); 826 if (avail >= freeStorageSize) { 827 return ok(); 828 } 829 830 cache = start_cache_collection(); 831 832 auto users = get_known_users(uuid_); 833 for (auto user : users) { 834 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 835 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 836 add_cache_files(cache, 837 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 838 } 839 840 clear_cache_files(data_path, cache, freeStorageSize); 841 finish_cache_collection(cache); 842 843 avail = data_disk_free(data_path); 844 if (avail >= freeStorageSize) { 845 return ok(); 846 } else { 847 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 848 freeStorageSize, data_path.c_str(), avail)); 849 } 850} 851 852binder::Status InstalldNativeService::rmdex(const std::string& codePath, 853 const std::string& instructionSet) { 854 ENFORCE_UID(AID_SYSTEM); 855 std::lock_guard<std::recursive_mutex> lock(mLock); 856 857 char dex_path[PKG_PATH_MAX]; 858 859 const char* path = codePath.c_str(); 860 const char* instruction_set = instructionSet.c_str(); 861 862 if (validate_apk_path(path) && validate_system_app_path(path)) { 863 return error("Invalid path " + codePath); 864 } 865 866 if (!create_cache_path(dex_path, path, instruction_set)) { 867 return error("Failed to create cache path for " + codePath); 868 } 869 870 ALOGV("unlink %s\n", dex_path); 871 if (unlink(dex_path) < 0) { 872 return error(StringPrintf("Failed to unlink %s", dex_path)); 873 } else { 874 return ok(); 875 } 876} 877 878struct stats { 879 int64_t codeSize; 880 int64_t dataSize; 881 int64_t cacheSize; 882}; 883 884#if MEASURE_DEBUG 885static std::string toString(std::vector<int64_t> values) { 886 std::stringstream res; 887 res << "["; 888 for (size_t i = 0; i < values.size(); i++) { 889 res << values[i]; 890 if (i < values.size() - 1) { 891 res << ","; 892 } 893 } 894 res << "]"; 895 return res.str(); 896} 897#endif 898 899static void collectQuotaStats(const std::string& device, int32_t userId, 900 int32_t appId, struct stats* stats, struct stats* extStats ATTRIBUTE_UNUSED) { 901 if (device.empty()) return; 902 903 struct dqblk dq; 904 905 uid_t uid = multiuser_get_uid(userId, appId); 906 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 907 reinterpret_cast<char*>(&dq)) != 0) { 908 if (errno != ESRCH) { 909 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 910 } 911 } else { 912#if MEASURE_DEBUG 913 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 914#endif 915 stats->dataSize += dq.dqb_curspace; 916 } 917 918 int cacheGid = multiuser_get_cache_gid(userId, appId); 919 if (cacheGid != -1) { 920 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 921 reinterpret_cast<char*>(&dq)) != 0) { 922 if (errno != ESRCH) { 923 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 924 } 925 } else { 926#if MEASURE_DEBUG 927 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 928#endif 929 stats->cacheSize += dq.dqb_curspace; 930 } 931 } 932 933 int sharedGid = multiuser_get_shared_app_gid(uid); 934 if (sharedGid != -1) { 935 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 936 reinterpret_cast<char*>(&dq)) != 0) { 937 if (errno != ESRCH) { 938 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 939 } 940 } else { 941#if MEASURE_DEBUG 942 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 943#endif 944 stats->codeSize += dq.dqb_curspace; 945 } 946 } 947 948#if MEASURE_EXTERNAL 949 // TODO: measure using external GIDs 950#endif 951} 952 953static void collectManualStats(const std::string& path, struct stats* stats) { 954 DIR *d; 955 int dfd; 956 struct dirent *de; 957 struct stat s; 958 959 d = opendir(path.c_str()); 960 if (d == nullptr) { 961 if (errno != ENOENT) { 962 PLOG(WARNING) << "Failed to open " << path; 963 } 964 return; 965 } 966 dfd = dirfd(d); 967 while ((de = readdir(d))) { 968 const char *name = de->d_name; 969 970 int64_t size = 0; 971 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 972 size = s.st_blocks * 512; 973 } 974 975 if (de->d_type == DT_DIR) { 976 if (!strcmp(name, ".")) { 977 // Don't recurse, but still count node size 978 } else if (!strcmp(name, "..")) { 979 // Don't recurse or count node size 980 continue; 981 } else { 982 // Measure all children nodes 983 size = 0; 984 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 985 } 986 987 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 988 stats->cacheSize += size; 989 } 990 } 991 992 // Legacy symlink isn't owned by app 993 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 994 continue; 995 } 996 997 // Everything found inside is considered data 998 stats->dataSize += size; 999 } 1000 closedir(d); 1001} 1002 1003static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1004 bool exclude_apps = false) { 1005 DIR *d; 1006 int dfd; 1007 struct dirent *de; 1008 struct stat s; 1009 1010 d = opendir(path.c_str()); 1011 if (d == nullptr) { 1012 if (errno != ENOENT) { 1013 PLOG(WARNING) << "Failed to open " << path; 1014 } 1015 return; 1016 } 1017 dfd = dirfd(d); 1018 while ((de = readdir(d))) { 1019 if (de->d_type == DT_DIR) { 1020 const char *name = de->d_name; 1021 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1022 continue; 1023 } 1024 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1025 continue; 1026 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1027 continue; 1028 } else { 1029 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1030 } 1031 } 1032 } 1033 closedir(d); 1034} 1035 1036binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1037 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1038 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1039 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1040 ENFORCE_UID(AID_SYSTEM); 1041 CHECK_ARGUMENT_UUID(uuid); 1042 for (auto packageName : packageNames) { 1043 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1044 } 1045 std::lock_guard<std::recursive_mutex> lock(mLock); 1046 1047 // When modifying this logic, always verify using tests: 1048 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1049 1050#if MEASURE_DEBUG 1051 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1052#endif 1053 1054 // Here's a summary of the common storage locations across the platform, 1055 // and how they're each tagged: 1056 // 1057 // /data/app/com.example UID system 1058 // /data/app/com.example/oat UID system 1059 // /data/user/0/com.example UID u0_a10 GID u0_a10 1060 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1061 // /data/media/0/foo.txt UID u0_media_rw 1062 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1063 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1064 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1065 // /data/media/obb/com.example UID system 1066 1067 struct stats stats; 1068 struct stats extStats; 1069 memset(&stats, 0, sizeof(stats)); 1070 memset(&extStats, 0, sizeof(extStats)); 1071 1072 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1073 1074 auto device = findQuotaDeviceForUuid(uuid); 1075 if (device.empty()) { 1076 flags &= ~FLAG_USE_QUOTA; 1077 } 1078 1079 for (auto packageName : packageNames) { 1080 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1081 calculate_tree_size(obbCodePath, &extStats.codeSize); 1082 } 1083 1084 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1085 for (auto codePath : codePaths) { 1086 calculate_tree_size(codePath, &stats.codeSize, -1, 1087 multiuser_get_shared_gid(userId, appId)); 1088 } 1089 1090 collectQuotaStats(device, userId, appId, &stats, &extStats); 1091 1092 } else { 1093 for (auto codePath : codePaths) { 1094 calculate_tree_size(codePath, &stats.codeSize); 1095 } 1096 1097 for (size_t i = 0; i < packageNames.size(); i++) { 1098 const char* pkgname = packageNames[i].c_str(); 1099 1100 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1101 collectManualStats(cePath, &stats); 1102 1103 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1104 collectManualStats(dePath, &stats); 1105 1106 auto userProfilePath = create_data_user_profile_package_path(userId, pkgname); 1107 calculate_tree_size(userProfilePath, &stats.dataSize); 1108 1109 auto refProfilePath = create_data_ref_profile_package_path(pkgname); 1110 calculate_tree_size(refProfilePath, &stats.codeSize); 1111 1112#if MEASURE_EXTERNAL 1113 auto extPath = create_data_media_package_path(uuid_, userId, pkgname, "data"); 1114 collectManualStats(extPath, &extStats); 1115 1116 auto mediaPath = create_data_media_package_path(uuid_, userId, pkgname, "media"); 1117 calculate_tree_size(mediaPath, &extStats.dataSize); 1118#endif 1119 } 1120 1121 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1122 if (sharedGid != -1) { 1123 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1124 sharedGid, -1); 1125 } 1126 1127 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1128 multiuser_get_uid(userId, appId), -1); 1129 } 1130 1131 std::vector<int64_t> ret; 1132 ret.push_back(stats.codeSize); 1133 ret.push_back(stats.dataSize); 1134 ret.push_back(stats.cacheSize); 1135 ret.push_back(extStats.codeSize); 1136 ret.push_back(extStats.dataSize); 1137 ret.push_back(extStats.cacheSize); 1138#if MEASURE_DEBUG 1139 LOG(DEBUG) << "Final result " << toString(ret); 1140#endif 1141 *_aidl_return = ret; 1142 return ok(); 1143} 1144 1145binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1146 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1147 std::vector<int64_t>* _aidl_return) { 1148 ENFORCE_UID(AID_SYSTEM); 1149 CHECK_ARGUMENT_UUID(uuid); 1150 std::lock_guard<std::recursive_mutex> lock(mLock); 1151 1152 // When modifying this logic, always verify using tests: 1153 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1154 1155#if MEASURE_DEBUG 1156 LOG(INFO) << "Measuring user " << userId; 1157#endif 1158 1159 struct stats stats; 1160 struct stats extStats; 1161 memset(&stats, 0, sizeof(stats)); 1162 memset(&extStats, 0, sizeof(extStats)); 1163 1164 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1165 1166 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1167 calculate_tree_size(obbPath, &extStats.codeSize); 1168 1169 auto device = findQuotaDeviceForUuid(uuid); 1170 if (device.empty()) { 1171 flags &= ~FLAG_USE_QUOTA; 1172 } 1173 1174 if (flags & FLAG_USE_QUOTA) { 1175 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1176 1177 auto cePath = create_data_user_ce_path(uuid_, userId); 1178 collectManualStatsForUser(cePath, &stats, true); 1179 1180 auto dePath = create_data_user_de_path(uuid_, userId); 1181 collectManualStatsForUser(dePath, &stats, true); 1182 1183 auto userProfilePath = create_data_user_profile_path(userId); 1184 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1185 1186 auto refProfilePath = create_data_ref_profile_path(); 1187 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1188 1189#if MEASURE_EXTERNAL 1190 // TODO: measure external storage paths 1191#endif 1192 1193 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1194 -1, -1, true); 1195 1196 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1197 -1, -1, true); 1198 1199 for (auto appId : appIds) { 1200 if (appId >= AID_APP_START) { 1201 collectQuotaStats(device, userId, appId, &stats, &extStats); 1202#if MEASURE_DEBUG 1203 // Sleep to make sure we don't lose logs 1204 usleep(1); 1205#endif 1206 } 1207 } 1208 } else { 1209 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1210 1211 auto cePath = create_data_user_ce_path(uuid_, userId); 1212 collectManualStatsForUser(cePath, &stats); 1213 1214 auto dePath = create_data_user_de_path(uuid_, userId); 1215 collectManualStatsForUser(dePath, &stats); 1216 1217 auto userProfilePath = create_data_user_profile_path(userId); 1218 calculate_tree_size(userProfilePath, &stats.dataSize); 1219 1220 auto refProfilePath = create_data_ref_profile_path(); 1221 calculate_tree_size(refProfilePath, &stats.codeSize); 1222 1223#if MEASURE_EXTERNAL 1224 // TODO: measure external storage paths 1225#endif 1226 1227 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1228 1229 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize); 1230 } 1231 1232 std::vector<int64_t> ret; 1233 ret.push_back(stats.codeSize); 1234 ret.push_back(stats.dataSize); 1235 ret.push_back(stats.cacheSize); 1236 ret.push_back(extStats.codeSize); 1237 ret.push_back(extStats.dataSize); 1238 ret.push_back(extStats.cacheSize); 1239#if MEASURE_DEBUG 1240 LOG(DEBUG) << "Final result " << toString(ret); 1241#endif 1242 *_aidl_return = ret; 1243 return ok(); 1244} 1245 1246binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1247 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1248 ENFORCE_UID(AID_SYSTEM); 1249 CHECK_ARGUMENT_UUID(uuid); 1250 std::lock_guard<std::recursive_mutex> lock(mLock); 1251 1252 // When modifying this logic, always verify using tests: 1253 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1254 1255#if MEASURE_DEBUG 1256 LOG(INFO) << "Measuring external " << userId; 1257#endif 1258 1259 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1260 1261 int64_t totalSize = 0; 1262 int64_t audioSize = 0; 1263 int64_t videoSize = 0; 1264 int64_t imageSize = 0; 1265 1266 auto device = findQuotaDeviceForUuid(uuid); 1267 if (device.empty()) { 1268 flags &= ~FLAG_USE_QUOTA; 1269 } 1270 1271 if (flags & FLAG_USE_QUOTA) { 1272 struct dqblk dq; 1273 1274 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1275 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1276 reinterpret_cast<char*>(&dq)) != 0) { 1277 if (errno != ESRCH) { 1278 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1279 } 1280 } else { 1281#if MEASURE_DEBUG 1282 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1283#endif 1284 totalSize = dq.dqb_curspace; 1285 } 1286 1287 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1288 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1289 reinterpret_cast<char*>(&dq)) == 0) { 1290#if MEASURE_DEBUG 1291 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1292#endif 1293 audioSize = dq.dqb_curspace; 1294 } 1295 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1296 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1297 reinterpret_cast<char*>(&dq)) == 0) { 1298#if MEASURE_DEBUG 1299 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1300#endif 1301 videoSize = dq.dqb_curspace; 1302 } 1303 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1304 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1305 reinterpret_cast<char*>(&dq)) == 0) { 1306#if MEASURE_DEBUG 1307 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1308#endif 1309 imageSize = dq.dqb_curspace; 1310 } 1311 } else { 1312 FTS *fts; 1313 FTSENT *p; 1314 auto path = create_data_media_path(uuid_, userId); 1315 char *argv[] = { (char*) path.c_str(), nullptr }; 1316 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1317 return error("Failed to fts_open " + path); 1318 } 1319 while ((p = fts_read(fts)) != NULL) { 1320 char* ext; 1321 int64_t size = (p->fts_statp->st_blocks * 512); 1322 switch (p->fts_info) { 1323 case FTS_F: 1324 // Only categorize files not belonging to apps 1325 if (p->fts_statp->st_gid < AID_APP_START) { 1326 ext = strrchr(p->fts_name, '.'); 1327 if (ext != nullptr) { 1328 switch (MatchExtension(++ext)) { 1329 case AID_MEDIA_AUDIO: audioSize += size; break; 1330 case AID_MEDIA_VIDEO: videoSize += size; break; 1331 case AID_MEDIA_IMAGE: imageSize += size; break; 1332 } 1333 } 1334 } 1335 // Fall through to always count against total 1336 case FTS_D: 1337 case FTS_DEFAULT: 1338 case FTS_SL: 1339 case FTS_SLNONE: 1340 totalSize += size; 1341 break; 1342 } 1343 } 1344 fts_close(fts); 1345 } 1346 1347 std::vector<int64_t> ret; 1348 ret.push_back(totalSize); 1349 ret.push_back(audioSize); 1350 ret.push_back(videoSize); 1351 ret.push_back(imageSize); 1352#if MEASURE_DEBUG 1353 LOG(DEBUG) << "Final result " << toString(ret); 1354#endif 1355 *_aidl_return = ret; 1356 return ok(); 1357} 1358 1359// Dumps the contents of a profile file, using pkgname's dex files for pretty 1360// printing the result. 1361binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1362 const std::string& codePaths, bool* _aidl_return) { 1363 ENFORCE_UID(AID_SYSTEM); 1364 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1365 std::lock_guard<std::recursive_mutex> lock(mLock); 1366 1367 const char* pkgname = packageName.c_str(); 1368 const char* code_paths = codePaths.c_str(); 1369 1370 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1371 return ok(); 1372} 1373 1374// TODO: Consider returning error codes. 1375binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1376 bool* _aidl_return) { 1377 ENFORCE_UID(AID_SYSTEM); 1378 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1379 std::lock_guard<std::recursive_mutex> lock(mLock); 1380 1381 const char* pkgname = packageName.c_str(); 1382 *_aidl_return = analyse_profiles(uid, pkgname); 1383 return ok(); 1384} 1385 1386binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1387 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1388 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1389 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1390 const std::unique_ptr<std::string>& sharedLibraries) { 1391 ENFORCE_UID(AID_SYSTEM); 1392 CHECK_ARGUMENT_UUID(uuid); 1393 if (packageName && *packageName != "*") { 1394 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1395 } 1396 std::lock_guard<std::recursive_mutex> lock(mLock); 1397 1398 const char* apk_path = apkPath.c_str(); 1399 const char* pkgname = packageName ? packageName->c_str() : "*"; 1400 const char* instruction_set = instructionSet.c_str(); 1401 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1402 const char* compiler_filter = compilerFilter.c_str(); 1403 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1404 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1405 1406 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1407 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 1408 return res ? error(res, "Failed to dexopt") : ok(); 1409} 1410 1411binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1412 ENFORCE_UID(AID_SYSTEM); 1413 std::lock_guard<std::recursive_mutex> lock(mLock); 1414 1415 const char* instruction_set = instructionSet.c_str(); 1416 1417 char boot_marker_path[PKG_PATH_MAX]; 1418 sprintf(boot_marker_path, 1419 "%s/%s/%s/.booting", 1420 android_data_dir.path, 1421 DALVIK_CACHE, 1422 instruction_set); 1423 1424 ALOGV("mark_boot_complete : %s", boot_marker_path); 1425 if (unlink(boot_marker_path) != 0) { 1426 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1427 } 1428 return ok(); 1429} 1430 1431void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1432 struct stat* statbuf) 1433{ 1434 while (path[basepos] != 0) { 1435 if (path[basepos] == '/') { 1436 path[basepos] = 0; 1437 if (lstat(path, statbuf) < 0) { 1438 ALOGV("Making directory: %s\n", path); 1439 if (mkdir(path, mode) == 0) { 1440 chown(path, uid, gid); 1441 } else { 1442 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1443 } 1444 } 1445 path[basepos] = '/'; 1446 basepos++; 1447 } 1448 basepos++; 1449 } 1450} 1451 1452binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1453 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1454 const std::string& nativeLibPath32, int32_t userId) { 1455 ENFORCE_UID(AID_SYSTEM); 1456 CHECK_ARGUMENT_UUID(uuid); 1457 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1458 std::lock_guard<std::recursive_mutex> lock(mLock); 1459 1460 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1461 const char* pkgname = packageName.c_str(); 1462 const char* asecLibDir = nativeLibPath32.c_str(); 1463 struct stat s, libStat; 1464 binder::Status res = ok(); 1465 1466 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1467 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1468 1469 const char* pkgdir = _pkgdir.c_str(); 1470 const char* libsymlink = _libsymlink.c_str(); 1471 1472 if (stat(pkgdir, &s) < 0) { 1473 return error("Failed to stat " + _pkgdir); 1474 } 1475 1476 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1477 return error("Failed to chown " + _pkgdir); 1478 } 1479 1480 if (chmod(pkgdir, 0700) < 0) { 1481 res = error("Failed to chmod " + _pkgdir); 1482 goto out; 1483 } 1484 1485 if (lstat(libsymlink, &libStat) < 0) { 1486 if (errno != ENOENT) { 1487 res = error("Failed to stat " + _libsymlink); 1488 goto out; 1489 } 1490 } else { 1491 if (S_ISDIR(libStat.st_mode)) { 1492 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1493 res = error("Failed to delete " + _libsymlink); 1494 goto out; 1495 } 1496 } else if (S_ISLNK(libStat.st_mode)) { 1497 if (unlink(libsymlink) < 0) { 1498 res = error("Failed to unlink " + _libsymlink); 1499 goto out; 1500 } 1501 } 1502 } 1503 1504 if (symlink(asecLibDir, libsymlink) < 0) { 1505 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1506 goto out; 1507 } 1508 1509out: 1510 if (chmod(pkgdir, s.st_mode) < 0) { 1511 auto msg = "Failed to cleanup chmod " + _pkgdir; 1512 if (res.isOk()) { 1513 res = error(msg); 1514 } else { 1515 PLOG(ERROR) << msg; 1516 } 1517 } 1518 1519 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1520 auto msg = "Failed to cleanup chown " + _pkgdir; 1521 if (res.isOk()) { 1522 res = error(msg); 1523 } else { 1524 PLOG(ERROR) << msg; 1525 } 1526 } 1527 1528 return res; 1529} 1530 1531static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1532{ 1533 static const char *IDMAP_BIN = "/system/bin/idmap"; 1534 static const size_t MAX_INT_LEN = 32; 1535 char idmap_str[MAX_INT_LEN]; 1536 1537 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1538 1539 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1540 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1541} 1542 1543// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1544// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1545static int flatten_path(const char *prefix, const char *suffix, 1546 const char *overlay_path, char *idmap_path, size_t N) 1547{ 1548 if (overlay_path == NULL || idmap_path == NULL) { 1549 return -1; 1550 } 1551 const size_t len_overlay_path = strlen(overlay_path); 1552 // will access overlay_path + 1 further below; requires absolute path 1553 if (len_overlay_path < 2 || *overlay_path != '/') { 1554 return -1; 1555 } 1556 const size_t len_idmap_root = strlen(prefix); 1557 const size_t len_suffix = strlen(suffix); 1558 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1559 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1560 // additions below would cause overflow 1561 return -1; 1562 } 1563 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1564 return -1; 1565 } 1566 memset(idmap_path, 0, N); 1567 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1568 char *ch = idmap_path + len_idmap_root; 1569 while (*ch != '\0') { 1570 if (*ch == '/') { 1571 *ch = '@'; 1572 } 1573 ++ch; 1574 } 1575 return 0; 1576} 1577 1578binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1579 const std::string& overlayApkPath, int32_t uid) { 1580 ENFORCE_UID(AID_SYSTEM); 1581 std::lock_guard<std::recursive_mutex> lock(mLock); 1582 1583 const char* target_apk = targetApkPath.c_str(); 1584 const char* overlay_apk = overlayApkPath.c_str(); 1585 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1586 1587 int idmap_fd = -1; 1588 char idmap_path[PATH_MAX]; 1589 1590 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1591 idmap_path, sizeof(idmap_path)) == -1) { 1592 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1593 goto fail; 1594 } 1595 1596 unlink(idmap_path); 1597 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1598 if (idmap_fd < 0) { 1599 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1600 goto fail; 1601 } 1602 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1603 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1604 goto fail; 1605 } 1606 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1607 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1608 goto fail; 1609 } 1610 1611 pid_t pid; 1612 pid = fork(); 1613 if (pid == 0) { 1614 /* child -- drop privileges before continuing */ 1615 if (setgid(uid) != 0) { 1616 ALOGE("setgid(%d) failed during idmap\n", uid); 1617 exit(1); 1618 } 1619 if (setuid(uid) != 0) { 1620 ALOGE("setuid(%d) failed during idmap\n", uid); 1621 exit(1); 1622 } 1623 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1624 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1625 exit(1); 1626 } 1627 1628 run_idmap(target_apk, overlay_apk, idmap_fd); 1629 exit(1); /* only if exec call to idmap failed */ 1630 } else { 1631 int status = wait_child(pid); 1632 if (status != 0) { 1633 ALOGE("idmap failed, status=0x%04x\n", status); 1634 goto fail; 1635 } 1636 } 1637 1638 close(idmap_fd); 1639 return ok(); 1640fail: 1641 if (idmap_fd >= 0) { 1642 close(idmap_fd); 1643 unlink(idmap_path); 1644 } 1645 return error(); 1646} 1647 1648binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1649 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1650 const std::string& seInfo) { 1651 ENFORCE_UID(AID_SYSTEM); 1652 CHECK_ARGUMENT_UUID(uuid); 1653 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1654 std::lock_guard<std::recursive_mutex> lock(mLock); 1655 1656 binder::Status res = ok(); 1657 1658 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1659 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1660 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1661 const char* pkgName = packageName.c_str(); 1662 const char* seinfo = seInfo.c_str(); 1663 1664 uid_t uid = multiuser_get_uid(userId, appId); 1665 if (flags & FLAG_STORAGE_CE) { 1666 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1667 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1668 res = error("restorecon failed for " + path); 1669 } 1670 } 1671 if (flags & FLAG_STORAGE_DE) { 1672 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1673 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1674 res = error("restorecon failed for " + path); 1675 } 1676 } 1677 return res; 1678} 1679 1680binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1681 const std::string& instructionSet) { 1682 ENFORCE_UID(AID_SYSTEM); 1683 std::lock_guard<std::recursive_mutex> lock(mLock); 1684 1685 const char* oat_dir = oatDir.c_str(); 1686 const char* instruction_set = instructionSet.c_str(); 1687 char oat_instr_dir[PKG_PATH_MAX]; 1688 1689 if (validate_apk_path(oat_dir)) { 1690 return error("Invalid path " + oatDir); 1691 } 1692 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1693 return error("Failed to prepare " + oatDir); 1694 } 1695 if (selinux_android_restorecon(oat_dir, 0)) { 1696 return error("Failed to restorecon " + oatDir); 1697 } 1698 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1699 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1700 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1701 } 1702 return ok(); 1703} 1704 1705binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1706 ENFORCE_UID(AID_SYSTEM); 1707 std::lock_guard<std::recursive_mutex> lock(mLock); 1708 1709 if (validate_apk_path(packageDir.c_str())) { 1710 return error("Invalid path " + packageDir); 1711 } 1712 if (delete_dir_contents_and_dir(packageDir) != 0) { 1713 return error("Failed to delete " + packageDir); 1714 } 1715 return ok(); 1716} 1717 1718binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1719 const std::string& fromBase, const std::string& toBase) { 1720 ENFORCE_UID(AID_SYSTEM); 1721 std::lock_guard<std::recursive_mutex> lock(mLock); 1722 1723 const char* relative_path = relativePath.c_str(); 1724 const char* from_base = fromBase.c_str(); 1725 const char* to_base = toBase.c_str(); 1726 char from_path[PKG_PATH_MAX]; 1727 char to_path[PKG_PATH_MAX]; 1728 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1729 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1730 1731 if (validate_apk_path_subdirs(from_path)) { 1732 return error(StringPrintf("Invalid from path %s", from_path)); 1733 } 1734 1735 if (validate_apk_path_subdirs(to_path)) { 1736 return error(StringPrintf("Invalid to path %s", to_path)); 1737 } 1738 1739 if (link(from_path, to_path) < 0) { 1740 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1741 } 1742 1743 return ok(); 1744} 1745 1746binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1747 const std::string& instructionSet, const std::string& outputPath) { 1748 ENFORCE_UID(AID_SYSTEM); 1749 std::lock_guard<std::recursive_mutex> lock(mLock); 1750 1751 const char* apk_path = apkPath.c_str(); 1752 const char* instruction_set = instructionSet.c_str(); 1753 const char* oat_dir = outputPath.c_str(); 1754 1755 bool success = move_ab(apk_path, instruction_set, oat_dir); 1756 return success ? ok() : error(); 1757} 1758 1759binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1760 const std::string& instructionSet, const std::string& outputPath) { 1761 ENFORCE_UID(AID_SYSTEM); 1762 std::lock_guard<std::recursive_mutex> lock(mLock); 1763 1764 const char* apk_path = apkPath.c_str(); 1765 const char* instruction_set = instructionSet.c_str(); 1766 const char* oat_dir = outputPath.c_str(); 1767 1768 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1769 return res ? ok() : error(); 1770} 1771 1772binder::Status InstalldNativeService::invalidateMounts() { 1773 ENFORCE_UID(AID_SYSTEM); 1774 std::lock_guard<std::recursive_mutex> lock(mLock); 1775 1776 mQuotaDevices.clear(); 1777 1778 std::ifstream in("/proc/mounts"); 1779 if (!in.is_open()) { 1780 return error("Failed to read mounts"); 1781 } 1782 1783 std::string source; 1784 std::string target; 1785 std::string ignored; 1786 struct dqblk dq; 1787 while (!in.eof()) { 1788 std::getline(in, source, ' '); 1789 std::getline(in, target, ' '); 1790 std::getline(in, ignored); 1791 1792 if (source.compare(0, 11, "/dev/block/") == 0) { 1793 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 1794 reinterpret_cast<char*>(&dq)) == 0) { 1795 LOG(DEBUG) << "Found " << source << " with quota"; 1796 mQuotaDevices[target] = source; 1797 } 1798 } 1799 } 1800 return ok(); 1801} 1802 1803std::string InstalldNativeService::findQuotaDeviceForUuid( 1804 const std::unique_ptr<std::string>& uuid) { 1805 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 1806 return mQuotaDevices[path]; 1807} 1808 1809} // namespace installd 1810} // namespace android 1811