InstalldNativeService.cpp revision d9ff77fa4b934b54e287ba259cb02a0eee0d9ce8
1/* 2** Copyright 2008, The Android Open Source Project 3** 4** Licensed under the Apache License, Version 2.0 (the "License"); 5** you may not use this file except in compliance with the License. 6** You may obtain a copy of the License at 7** 8** http://www.apache.org/licenses/LICENSE-2.0 9** 10** Unless required by applicable law or agreed to in writing, software 11** distributed under the License is distributed on an "AS IS" BASIS, 12** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13** See the License for the specific language governing permissions and 14** limitations under the License. 15*/ 16 17#include "InstalldNativeService.h" 18 19#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER 20 21#include <errno.h> 22#include <inttypes.h> 23#include <fstream> 24#include <fts.h> 25#include <regex> 26#include <stdlib.h> 27#include <string.h> 28#include <sys/capability.h> 29#include <sys/file.h> 30#include <sys/resource.h> 31#include <sys/quota.h> 32#include <sys/stat.h> 33#include <sys/statvfs.h> 34#include <sys/types.h> 35#include <sys/wait.h> 36#include <sys/xattr.h> 37#include <unistd.h> 38 39#include <android-base/logging.h> 40#include <android-base/stringprintf.h> 41#include <android-base/strings.h> 42#include <android-base/unique_fd.h> 43#include <cutils/fs.h> 44#include <cutils/properties.h> 45#include <cutils/sched_policy.h> 46#include <log/log.h> // TODO: Move everything to base/logging. 47#include <logwrap/logwrap.h> 48#include <private/android_filesystem_config.h> 49#include <selinux/android.h> 50#include <system/thread_defs.h> 51#include <utils/Trace.h> 52 53#include "dexopt.h" 54#include "globals.h" 55#include "installd_deps.h" 56#include "otapreopt_utils.h" 57#include "utils.h" 58 59#include "CacheTracker.h" 60#include "MatchExtensionGen.h" 61 62#ifndef LOG_TAG 63#define LOG_TAG "installd" 64#endif 65 66using android::base::StringPrintf; 67using std::endl; 68 69namespace android { 70namespace installd { 71 72static constexpr const char* kCpPath = "/system/bin/cp"; 73static constexpr const char* kXattrDefault = "user.default"; 74 75static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 76 77static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 78static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 79static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 80 81static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 82static constexpr const char* IDMAP_SUFFIX = "@idmap"; 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; 88static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13; 89static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14; 90static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15; 91static constexpr int FLAG_FORCE = 1 << 16; 92 93namespace { 94 95constexpr const char* kDump = "android.permission.DUMP"; 96 97static binder::Status ok() { 98 return binder::Status::ok(); 99} 100 101static binder::Status exception(uint32_t code, const std::string& msg) { 102 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 103} 104 105static binder::Status error() { 106 return binder::Status::fromServiceSpecificError(errno); 107} 108 109static binder::Status error(const std::string& msg) { 110 PLOG(ERROR) << msg; 111 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 112} 113 114static binder::Status error(uint32_t code, const std::string& msg) { 115 LOG(ERROR) << msg << " (" << code << ")"; 116 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 117} 118 119binder::Status checkPermission(const char* permission) { 120 pid_t pid; 121 uid_t uid; 122 123 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 124 reinterpret_cast<int32_t*>(&uid))) { 125 return ok(); 126 } else { 127 return exception(binder::Status::EX_SECURITY, 128 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 129 } 130} 131 132binder::Status checkUid(uid_t expectedUid) { 133 uid_t uid = IPCThreadState::self()->getCallingUid(); 134 if (uid == expectedUid || uid == AID_ROOT) { 135 return ok(); 136 } else { 137 return exception(binder::Status::EX_SECURITY, 138 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 139 } 140} 141 142binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 143 if (!uuid || is_valid_filename(*uuid)) { 144 return ok(); 145 } else { 146 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 147 StringPrintf("UUID %s is malformed", uuid->c_str())); 148 } 149} 150 151binder::Status checkArgumentPackageName(const std::string& packageName) { 152 if (is_valid_package_name(packageName.c_str())) { 153 return ok(); 154 } else { 155 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 156 StringPrintf("Package name %s is malformed", packageName.c_str())); 157 } 158} 159 160#define ENFORCE_UID(uid) { \ 161 binder::Status status = checkUid((uid)); \ 162 if (!status.isOk()) { \ 163 return status; \ 164 } \ 165} 166 167#define CHECK_ARGUMENT_UUID(uuid) { \ 168 binder::Status status = checkArgumentUuid((uuid)); \ 169 if (!status.isOk()) { \ 170 return status; \ 171 } \ 172} 173 174#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 175 binder::Status status = \ 176 checkArgumentPackageName((packageName)); \ 177 if (!status.isOk()) { \ 178 return status; \ 179 } \ 180} 181 182} // namespace 183 184status_t InstalldNativeService::start() { 185 IPCThreadState::self()->disableBackgroundScheduling(true); 186 status_t ret = BinderService<InstalldNativeService>::publish(); 187 if (ret != android::OK) { 188 return ret; 189 } 190 sp<ProcessState> ps(ProcessState::self()); 191 ps->startThreadPool(); 192 ps->giveThreadPoolName(); 193 return android::OK; 194} 195 196status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 197 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 198 const binder::Status dump_permission = checkPermission(kDump); 199 if (!dump_permission.isOk()) { 200 out << dump_permission.toString8() << endl; 201 return PERMISSION_DENIED; 202 } 203 std::lock_guard<std::recursive_mutex> lock(mLock); 204 205 out << "installd is happy!" << endl; 206 207 { 208 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 209 out << endl << "Devices with quota support:" << endl; 210 for (const auto& n : mQuotaDevices) { 211 out << " " << n.first << " = " << n.second << endl; 212 } 213 } 214 215 { 216 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 217 out << endl << "Per-UID cache quotas:" << endl; 218 for (const auto& n : mCacheQuotas) { 219 out << " " << n.first << " = " << n.second << endl; 220 } 221 } 222 223 out << endl; 224 out.flush(); 225 226 return NO_ERROR; 227} 228 229/** 230 * Perform restorecon of the given path, but only perform recursive restorecon 231 * if the label of that top-level file actually changed. This can save us 232 * significant time by avoiding no-op traversals of large filesystem trees. 233 */ 234static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 235 bool existing) { 236 int res = 0; 237 char* before = nullptr; 238 char* after = nullptr; 239 240 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 241 // libselinux. Not needed here. 242 243 if (lgetfilecon(path.c_str(), &before) < 0) { 244 PLOG(ERROR) << "Failed before getfilecon for " << path; 245 goto fail; 246 } 247 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 248 PLOG(ERROR) << "Failed top-level restorecon for " << path; 249 goto fail; 250 } 251 if (lgetfilecon(path.c_str(), &after) < 0) { 252 PLOG(ERROR) << "Failed after getfilecon for " << path; 253 goto fail; 254 } 255 256 // If the initial top-level restorecon above changed the label, then go 257 // back and restorecon everything recursively 258 if (strcmp(before, after)) { 259 if (existing) { 260 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 261 << path << "; running recursive restorecon"; 262 } 263 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 264 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 265 PLOG(ERROR) << "Failed recursive restorecon for " << path; 266 goto fail; 267 } 268 } 269 270 goto done; 271fail: 272 res = -1; 273done: 274 free(before); 275 free(after); 276 return res; 277} 278 279static int restorecon_app_data_lazy(const std::string& parent, const char* name, 280 const std::string& seInfo, uid_t uid, bool existing) { 281 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 282 existing); 283} 284 285static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 286 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 287 PLOG(ERROR) << "Failed to prepare " << path; 288 return -1; 289 } 290 return 0; 291} 292 293/** 294 * Ensure that we have a hard-limit quota to protect against abusive apps; 295 * they should never use more than 90% of blocks or 50% of inodes. 296 */ 297static int prepare_app_quota(const std::unique_ptr<std::string>& uuid, const std::string& device, 298 uid_t uid) { 299 if (device.empty()) return 0; 300 301 struct dqblk dq; 302 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 303 reinterpret_cast<char*>(&dq)) != 0) { 304 PLOG(WARNING) << "Failed to find quota for " << uid; 305 return -1; 306 } 307 308 if ((dq.dqb_bhardlimit == 0) || (dq.dqb_ihardlimit == 0)) { 309 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 310 struct statvfs stat; 311 if (statvfs(path.c_str(), &stat) != 0) { 312 PLOG(WARNING) << "Failed to statvfs " << path; 313 return -1; 314 } 315 316 dq.dqb_valid = QIF_LIMITS; 317 dq.dqb_bhardlimit = (((stat.f_blocks * stat.f_frsize) / 10) * 9) / QIF_DQBLKSIZE; 318 dq.dqb_ihardlimit = (stat.f_files / 2); 319 if (quotactl(QCMD(Q_SETQUOTA, USRQUOTA), device.c_str(), uid, 320 reinterpret_cast<char*>(&dq)) != 0) { 321 PLOG(WARNING) << "Failed to set hard quota for " << uid; 322 return -1; 323 } else { 324 LOG(DEBUG) << "Applied hard quotas for " << uid; 325 return 0; 326 } 327 } else { 328 // Hard quota already set; assume it's reasonable 329 return 0; 330 } 331} 332 333binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 334 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 335 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 336 ENFORCE_UID(AID_SYSTEM); 337 CHECK_ARGUMENT_UUID(uuid); 338 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 339 std::lock_guard<std::recursive_mutex> lock(mLock); 340 341 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 342 const char* pkgname = packageName.c_str(); 343 344 // Assume invalid inode unless filled in below 345 if (_aidl_return != nullptr) *_aidl_return = -1; 346 347 int32_t uid = multiuser_get_uid(userId, appId); 348 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 349 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 350 351 // If UID doesn't have a specific cache GID, use UID value 352 if (cacheGid == -1) { 353 cacheGid = uid; 354 } 355 356 if (flags & FLAG_STORAGE_CE) { 357 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 358 bool existing = (access(path.c_str(), F_OK) == 0); 359 360 if (prepare_app_dir(path, targetMode, uid) || 361 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 362 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 363 return error("Failed to prepare " + path); 364 } 365 366 // Consider restorecon over contents if label changed 367 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 368 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 369 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 370 return error("Failed to restorecon " + path); 371 } 372 373 // Remember inode numbers of cache directories so that we can clear 374 // contents while CE storage is locked 375 if (write_path_inode(path, "cache", kXattrInodeCache) || 376 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 377 return error("Failed to write_path_inode for " + path); 378 } 379 380 // And return the CE inode of the top-level data directory so we can 381 // clear contents while CE storage is locked 382 if ((_aidl_return != nullptr) 383 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 384 return error("Failed to get_path_inode for " + path); 385 } 386 } 387 if (flags & FLAG_STORAGE_DE) { 388 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 389 bool existing = (access(path.c_str(), F_OK) == 0); 390 391 if (prepare_app_dir(path, targetMode, uid) || 392 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 393 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 394 return error("Failed to prepare " + path); 395 } 396 397 // Consider restorecon over contents if label changed 398 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 399 return error("Failed to restorecon " + path); 400 } 401 402 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), uid)) { 403 return error("Failed to set hard quota " + path); 404 } 405 406 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 407 const std::string profile_dir = 408 create_primary_current_profile_package_dir_path(userId, pkgname); 409 // read-write-execute only for the app user. 410 if (fs_prepare_dir_strict(profile_dir.c_str(), 0700, uid, uid) != 0) { 411 return error("Failed to prepare " + profile_dir); 412 } 413 const std::string profile_file = create_current_profile_path(userId, pkgname, 414 /*is_secondary_dex*/false); 415 // read-write only for the app user. 416 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 417 return error("Failed to prepare " + profile_file); 418 } 419 const std::string ref_profile_path = 420 create_primary_reference_profile_package_dir_path(pkgname); 421 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 422 // profiles. 423 int shared_app_gid = multiuser_get_shared_gid(0, appId); 424 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 425 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 426 return error("Failed to prepare " + ref_profile_path); 427 } 428 } 429 } 430 return ok(); 431} 432 433binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 434 const std::string& packageName, int32_t userId, int32_t flags) { 435 ENFORCE_UID(AID_SYSTEM); 436 CHECK_ARGUMENT_UUID(uuid); 437 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 438 std::lock_guard<std::recursive_mutex> lock(mLock); 439 440 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 441 const char* pkgname = packageName.c_str(); 442 443 // This method only exists to upgrade system apps that have requested 444 // forceDeviceEncrypted, so their default storage always lives in a 445 // consistent location. This only works on non-FBE devices, since we 446 // never want to risk exposing data on a device with real CE/DE storage. 447 448 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 449 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 450 451 // If neither directory is marked as default, assume CE is default 452 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 453 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 454 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 455 return error("Failed to mark default storage " + ce_path); 456 } 457 } 458 459 // Migrate default data location if needed 460 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 461 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 462 463 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 464 LOG(WARNING) << "Requested default storage " << target 465 << " is not active; migrating from " << source; 466 if (delete_dir_contents_and_dir(target) != 0) { 467 return error("Failed to delete " + target); 468 } 469 if (rename(source.c_str(), target.c_str()) != 0) { 470 return error("Failed to rename " + source + " to " + target); 471 } 472 } 473 474 return ok(); 475} 476 477 478binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 479 ENFORCE_UID(AID_SYSTEM); 480 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 481 std::lock_guard<std::recursive_mutex> lock(mLock); 482 483 binder::Status res = ok(); 484 if (!clear_primary_reference_profile(packageName)) { 485 res = error("Failed to clear reference profile for " + packageName); 486 } 487 if (!clear_primary_current_profiles(packageName)) { 488 res = error("Failed to clear current profiles for " + packageName); 489 } 490 return res; 491} 492 493binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 494 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 495 ENFORCE_UID(AID_SYSTEM); 496 CHECK_ARGUMENT_UUID(uuid); 497 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 498 std::lock_guard<std::recursive_mutex> lock(mLock); 499 500 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 501 const char* pkgname = packageName.c_str(); 502 503 binder::Status res = ok(); 504 if (flags & FLAG_STORAGE_CE) { 505 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 506 if (flags & FLAG_CLEAR_CACHE_ONLY) { 507 path = read_path_inode(path, "cache", kXattrInodeCache); 508 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 509 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 510 } 511 if (access(path.c_str(), F_OK) == 0) { 512 if (delete_dir_contents(path) != 0) { 513 res = error("Failed to delete contents of " + path); 514 } 515 } 516 } 517 if (flags & FLAG_STORAGE_DE) { 518 std::string suffix = ""; 519 bool only_cache = false; 520 if (flags & FLAG_CLEAR_CACHE_ONLY) { 521 suffix = CACHE_DIR_POSTFIX; 522 only_cache = true; 523 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 524 suffix = CODE_CACHE_DIR_POSTFIX; 525 only_cache = true; 526 } 527 528 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 529 if (access(path.c_str(), F_OK) == 0) { 530 if (delete_dir_contents(path) != 0) { 531 res = error("Failed to delete contents of " + path); 532 } 533 } 534 if (!only_cache) { 535 if (!clear_primary_current_profile(packageName, userId)) { 536 res = error("Failed to clear current profile for " + packageName); 537 } 538 } 539 } 540 return res; 541} 542 543static int destroy_app_reference_profile(const std::string& pkgname) { 544 return delete_dir_contents_and_dir( 545 create_primary_reference_profile_package_dir_path(pkgname), 546 /*ignore_if_missing*/ true); 547} 548 549static int destroy_app_current_profiles(const std::string& pkgname, userid_t userid) { 550 return delete_dir_contents_and_dir( 551 create_primary_current_profile_package_dir_path(userid, pkgname), 552 /*ignore_if_missing*/ true); 553} 554 555binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 556 ENFORCE_UID(AID_SYSTEM); 557 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 558 std::lock_guard<std::recursive_mutex> lock(mLock); 559 560 binder::Status res = ok(); 561 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 562 for (auto user : users) { 563 if (destroy_app_current_profiles(packageName, user) != 0) { 564 res = error("Failed to destroy current profiles for " + packageName); 565 } 566 } 567 if (destroy_app_reference_profile(packageName) != 0) { 568 res = error("Failed to destroy reference profile for " + packageName); 569 } 570 return res; 571} 572 573binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 574 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 575 ENFORCE_UID(AID_SYSTEM); 576 CHECK_ARGUMENT_UUID(uuid); 577 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 578 std::lock_guard<std::recursive_mutex> lock(mLock); 579 580 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 581 const char* pkgname = packageName.c_str(); 582 583 binder::Status res = ok(); 584 if (flags & FLAG_STORAGE_CE) { 585 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 586 if (delete_dir_contents_and_dir(path) != 0) { 587 res = error("Failed to delete " + path); 588 } 589 } 590 if (flags & FLAG_STORAGE_DE) { 591 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 592 if (delete_dir_contents_and_dir(path) != 0) { 593 res = error("Failed to delete " + path); 594 } 595 destroy_app_current_profiles(packageName, userId); 596 // TODO(calin): If the package is still installed by other users it's probably 597 // beneficial to keep the reference profile around. 598 // Verify if it's ok to do that. 599 destroy_app_reference_profile(packageName); 600 } 601 return res; 602} 603 604static gid_t get_cache_gid(uid_t uid) { 605 int32_t gid = multiuser_get_cache_gid(multiuser_get_user_id(uid), multiuser_get_app_id(uid)); 606 return (gid != -1) ? gid : uid; 607} 608 609binder::Status InstalldNativeService::fixupAppData(const std::unique_ptr<std::string>& uuid, 610 int32_t flags) { 611 ENFORCE_UID(AID_SYSTEM); 612 CHECK_ARGUMENT_UUID(uuid); 613 std::lock_guard<std::recursive_mutex> lock(mLock); 614 615 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 616 for (auto user : get_known_users(uuid_)) { 617 ATRACE_BEGIN("fixup user"); 618 FTS* fts; 619 FTSENT* p; 620 auto ce_path = create_data_user_ce_path(uuid_, user); 621 auto de_path = create_data_user_de_path(uuid_, user); 622 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr }; 623 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 624 return error("Failed to fts_open"); 625 } 626 while ((p = fts_read(fts)) != nullptr) { 627 if (p->fts_info == FTS_D && p->fts_level == 1) { 628 // Track down inodes of cache directories 629 uint64_t raw = 0; 630 ino_t inode_cache = 0; 631 ino_t inode_code_cache = 0; 632 if (getxattr(p->fts_path, kXattrInodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 633 inode_cache = raw; 634 } 635 if (getxattr(p->fts_path, kXattrInodeCodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 636 inode_code_cache = raw; 637 } 638 639 // Figure out expected GID of each child 640 FTSENT* child = fts_children(fts, 0); 641 while (child != nullptr) { 642 if ((child->fts_statp->st_ino == inode_cache) 643 || (child->fts_statp->st_ino == inode_code_cache) 644 || !strcmp(child->fts_name, "cache") 645 || !strcmp(child->fts_name, "code_cache")) { 646 child->fts_number = get_cache_gid(p->fts_statp->st_uid); 647 } else { 648 child->fts_number = p->fts_statp->st_uid; 649 } 650 child = child->fts_link; 651 } 652 } else if (p->fts_level >= 2) { 653 if (p->fts_level > 2) { 654 // Inherit GID from parent once we're deeper into tree 655 p->fts_number = p->fts_parent->fts_number; 656 } 657 658 uid_t uid = p->fts_parent->fts_statp->st_uid; 659 gid_t cache_gid = get_cache_gid(uid); 660 gid_t expected = p->fts_number; 661 gid_t actual = p->fts_statp->st_gid; 662 if (actual == expected) { 663#if FIXUP_DEBUG 664 LOG(DEBUG) << "Ignoring " << p->fts_path << " with expected GID " << expected; 665#endif 666 if (!(flags & FLAG_FORCE)) { 667 fts_set(fts, p, FTS_SKIP); 668 } 669 } else if ((actual == uid) || (actual == cache_gid)) { 670 // Only consider fixing up when current GID belongs to app 671 if (p->fts_info != FTS_D) { 672 LOG(INFO) << "Fixing " << p->fts_path << " with unexpected GID " << actual 673 << " instead of " << expected; 674 } 675 switch (p->fts_info) { 676 case FTS_DP: 677 // If we're moving towards cache GID, we need to set S_ISGID 678 if (expected == cache_gid) { 679 if (chmod(p->fts_path, 02771) != 0) { 680 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 681 } 682 } 683 // Intentional fall through to also set GID 684 case FTS_F: 685 if (chown(p->fts_path, -1, expected) != 0) { 686 PLOG(WARNING) << "Failed to chown " << p->fts_path; 687 } 688 break; 689 case FTS_SL: 690 case FTS_SLNONE: 691 if (lchown(p->fts_path, -1, expected) != 0) { 692 PLOG(WARNING) << "Failed to chown " << p->fts_path; 693 } 694 break; 695 } 696 } else { 697 // Ignore all other GID transitions, since they're kinda shady 698 LOG(WARNING) << "Ignoring " << p->fts_path << " with unexpected GID " << actual 699 << " instead of " << expected; 700 } 701 } 702 } 703 fts_close(fts); 704 ATRACE_END(); 705 } 706 return ok(); 707} 708 709binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 710 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 711 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 712 int32_t targetSdkVersion) { 713 ENFORCE_UID(AID_SYSTEM); 714 CHECK_ARGUMENT_UUID(fromUuid); 715 CHECK_ARGUMENT_UUID(toUuid); 716 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 717 std::lock_guard<std::recursive_mutex> lock(mLock); 718 719 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 720 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 721 const char* package_name = packageName.c_str(); 722 const char* data_app_name = dataAppName.c_str(); 723 724 binder::Status res = ok(); 725 std::vector<userid_t> users = get_known_users(from_uuid); 726 727 // Copy app 728 { 729 auto from = create_data_app_package_path(from_uuid, data_app_name); 730 auto to = create_data_app_package_path(to_uuid, data_app_name); 731 auto to_parent = create_data_app_path(to_uuid); 732 733 char *argv[] = { 734 (char*) kCpPath, 735 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 736 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 737 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 738 (char*) "-P", /* Do not follow symlinks [default] */ 739 (char*) "-d", /* don't dereference symlinks */ 740 (char*) from.c_str(), 741 (char*) to_parent.c_str() 742 }; 743 744 LOG(DEBUG) << "Copying " << from << " to " << to; 745 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 746 if (rc != 0) { 747 res = error(rc, "Failed copying " + from + " to " + to); 748 goto fail; 749 } 750 751 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 752 res = error("Failed to restorecon " + to); 753 goto fail; 754 } 755 } 756 757 // Copy private data for all known users 758 for (auto user : users) { 759 760 // Data source may not exist for all users; that's okay 761 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 762 if (access(from_ce.c_str(), F_OK) != 0) { 763 LOG(INFO) << "Missing source " << from_ce; 764 continue; 765 } 766 767 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 768 seInfo, targetSdkVersion, nullptr).isOk()) { 769 res = error("Failed to create package target"); 770 goto fail; 771 } 772 773 char *argv[] = { 774 (char*) kCpPath, 775 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 776 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 777 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 778 (char*) "-P", /* Do not follow symlinks [default] */ 779 (char*) "-d", /* don't dereference symlinks */ 780 nullptr, 781 nullptr 782 }; 783 784 { 785 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 786 auto to = create_data_user_de_path(to_uuid, user); 787 argv[6] = (char*) from.c_str(); 788 argv[7] = (char*) to.c_str(); 789 790 LOG(DEBUG) << "Copying " << from << " to " << to; 791 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 792 if (rc != 0) { 793 res = error(rc, "Failed copying " + from + " to " + to); 794 goto fail; 795 } 796 } 797 { 798 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 799 auto to = create_data_user_ce_path(to_uuid, user); 800 argv[6] = (char*) from.c_str(); 801 argv[7] = (char*) to.c_str(); 802 803 LOG(DEBUG) << "Copying " << from << " to " << to; 804 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 805 if (rc != 0) { 806 res = error(rc, "Failed copying " + from + " to " + to); 807 goto fail; 808 } 809 } 810 811 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 812 appId, seInfo).isOk()) { 813 res = error("Failed to restorecon"); 814 goto fail; 815 } 816 } 817 818 // We let the framework scan the new location and persist that before 819 // deleting the data in the old location; this ordering ensures that 820 // we can recover from things like battery pulls. 821 return ok(); 822 823fail: 824 // Nuke everything we might have already copied 825 { 826 auto to = create_data_app_package_path(to_uuid, data_app_name); 827 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 828 LOG(WARNING) << "Failed to rollback " << to; 829 } 830 } 831 for (auto user : users) { 832 { 833 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 834 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 835 LOG(WARNING) << "Failed to rollback " << to; 836 } 837 } 838 { 839 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 840 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 841 LOG(WARNING) << "Failed to rollback " << to; 842 } 843 } 844 } 845 return res; 846} 847 848binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 849 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 850 ENFORCE_UID(AID_SYSTEM); 851 CHECK_ARGUMENT_UUID(uuid); 852 std::lock_guard<std::recursive_mutex> lock(mLock); 853 854 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 855 if (flags & FLAG_STORAGE_DE) { 856 if (uuid_ == nullptr) { 857 if (ensure_config_user_dirs(userId) != 0) { 858 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 859 } 860 } 861 } 862 863 // Data under /data/media doesn't have an app, but we still want 864 // to limit it to prevent abuse. 865 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), 866 multiuser_get_uid(userId, AID_MEDIA_RW))) { 867 return error("Failed to set hard quota for media_rw"); 868 } 869 870 return ok(); 871} 872 873binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 874 int32_t userId, int32_t flags) { 875 ENFORCE_UID(AID_SYSTEM); 876 CHECK_ARGUMENT_UUID(uuid); 877 std::lock_guard<std::recursive_mutex> lock(mLock); 878 879 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 880 binder::Status res = ok(); 881 if (flags & FLAG_STORAGE_DE) { 882 auto path = create_data_user_de_path(uuid_, userId); 883 if (delete_dir_contents_and_dir(path, true) != 0) { 884 res = error("Failed to delete " + path); 885 } 886 if (uuid_ == nullptr) { 887 path = create_data_misc_legacy_path(userId); 888 if (delete_dir_contents_and_dir(path, true) != 0) { 889 res = error("Failed to delete " + path); 890 } 891 path = create_primary_cur_profile_dir_path(userId); 892 if (delete_dir_contents_and_dir(path, true) != 0) { 893 res = error("Failed to delete " + path); 894 } 895 } 896 } 897 if (flags & FLAG_STORAGE_CE) { 898 auto path = create_data_user_ce_path(uuid_, userId); 899 if (delete_dir_contents_and_dir(path, true) != 0) { 900 res = error("Failed to delete " + path); 901 } 902 path = create_data_media_path(uuid_, userId); 903 if (delete_dir_contents_and_dir(path, true) != 0) { 904 res = error("Failed to delete " + path); 905 } 906 } 907 return res; 908} 909 910/* Try to ensure free_size bytes of storage are available. 911 * Returns 0 on success. 912 * This is rather simple-minded because doing a full LRU would 913 * be potentially memory-intensive, and without atime it would 914 * also require that apps constantly modify file metadata even 915 * when just reading from the cache, which is pretty awful. 916 */ 917binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 918 int64_t freeStorageSize, int32_t flags) { 919 ENFORCE_UID(AID_SYSTEM); 920 CHECK_ARGUMENT_UUID(uuid); 921 std::lock_guard<std::recursive_mutex> lock(mLock); 922 923 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 924 auto data_path = create_data_path(uuid_); 925 auto device = findQuotaDeviceForUuid(uuid); 926 auto noop = (flags & FLAG_FREE_CACHE_NOOP); 927 928 int64_t free = data_disk_free(data_path); 929 if (free < 0) { 930 return error("Failed to determine free space for " + data_path); 931 } 932 933 int64_t needed = freeStorageSize - free; 934 LOG(DEBUG) << "Device " << data_path << " has " << free << " free; requested " 935 << freeStorageSize << "; needed " << needed; 936 937 if (free >= freeStorageSize) { 938 return ok(); 939 } 940 941 if (flags & FLAG_FREE_CACHE_V2) { 942 // This new cache strategy fairly removes files from UIDs by deleting 943 // files from the UIDs which are most over their allocated quota 944 945 // 1. Create trackers for every known UID 946 ATRACE_BEGIN("create"); 947 std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; 948 for (auto user : get_known_users(uuid_)) { 949 FTS *fts; 950 FTSENT *p; 951 auto ce_path = create_data_user_ce_path(uuid_, user); 952 auto de_path = create_data_user_de_path(uuid_, user); 953 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr }; 954 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 955 return error("Failed to fts_open"); 956 } 957 while ((p = fts_read(fts)) != NULL) { 958 if (p->fts_info == FTS_D && p->fts_level == 1) { 959 uid_t uid = p->fts_statp->st_uid; 960 auto search = trackers.find(uid); 961 if (search != trackers.end()) { 962 search->second->addDataPath(p->fts_path); 963 } else { 964 auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( 965 multiuser_get_user_id(uid), multiuser_get_app_id(uid), device)); 966 tracker->addDataPath(p->fts_path); 967 { 968 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 969 tracker->cacheQuota = mCacheQuotas[uid]; 970 } 971 if (tracker->cacheQuota == 0) { 972#if MEASURE_DEBUG 973 LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; 974#endif 975 tracker->cacheQuota = 67108864; 976 } 977 trackers[uid] = tracker; 978 } 979 fts_set(fts, p, FTS_SKIP); 980 } 981 } 982 fts_close(fts); 983 } 984 ATRACE_END(); 985 986 // 2. Populate tracker stats and insert into priority queue 987 ATRACE_BEGIN("populate"); 988 auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { 989 return (left->getCacheRatio() < right->getCacheRatio()); 990 }; 991 std::priority_queue<std::shared_ptr<CacheTracker>, 992 std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); 993 for (const auto& it : trackers) { 994 it.second->loadStats(); 995 queue.push(it.second); 996 } 997 ATRACE_END(); 998 999 // 3. Bounce across the queue, freeing items from whichever tracker is 1000 // the most over their assigned quota 1001 ATRACE_BEGIN("bounce"); 1002 std::shared_ptr<CacheTracker> active; 1003 while (active || !queue.empty()) { 1004 // Only look at apps under quota when explicitly requested 1005 if (active && (active->getCacheRatio() < 10000) 1006 && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) { 1007 LOG(DEBUG) << "Active ratio " << active->getCacheRatio() 1008 << " isn't over quota, and defy not requested"; 1009 break; 1010 } 1011 1012 // Find the best tracker to work with; this might involve swapping 1013 // if the active tracker is no longer the most over quota 1014 bool nextBetter = active && !queue.empty() 1015 && active->getCacheRatio() < queue.top()->getCacheRatio(); 1016 if (!active || nextBetter) { 1017 if (active) { 1018 // Current tracker still has items, so we'll consider it 1019 // again later once it bubbles up to surface 1020 queue.push(active); 1021 } 1022 active = queue.top(); queue.pop(); 1023 active->ensureItems(); 1024 continue; 1025 } 1026 1027 // If no items remain, go find another tracker 1028 if (active->items.empty()) { 1029 active = nullptr; 1030 continue; 1031 } else { 1032 auto item = active->items.back(); 1033 active->items.pop_back(); 1034 1035 LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); 1036 if (!noop) { 1037 item->purge(); 1038 } 1039 active->cacheUsed -= item->size; 1040 needed -= item->size; 1041 } 1042 1043 // Verify that we're actually done before bailing, since sneaky 1044 // apps might be using hardlinks 1045 if (needed <= 0) { 1046 free = data_disk_free(data_path); 1047 needed = freeStorageSize - free; 1048 if (needed <= 0) { 1049 break; 1050 } else { 1051 LOG(WARNING) << "Expected to be done but still need " << needed; 1052 } 1053 } 1054 } 1055 ATRACE_END(); 1056 1057 } else { 1058 return error("Legacy cache logic no longer supported"); 1059 } 1060 1061 free = data_disk_free(data_path); 1062 if (free >= freeStorageSize) { 1063 return ok(); 1064 } else { 1065 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 1066 freeStorageSize, data_path.c_str(), free)); 1067 } 1068} 1069 1070binder::Status InstalldNativeService::rmdex(const std::string& codePath, 1071 const std::string& instructionSet) { 1072 ENFORCE_UID(AID_SYSTEM); 1073 std::lock_guard<std::recursive_mutex> lock(mLock); 1074 1075 char dex_path[PKG_PATH_MAX]; 1076 1077 const char* path = codePath.c_str(); 1078 const char* instruction_set = instructionSet.c_str(); 1079 1080 if (validate_apk_path(path) && validate_system_app_path(path)) { 1081 return error("Invalid path " + codePath); 1082 } 1083 1084 if (!create_cache_path(dex_path, path, instruction_set)) { 1085 return error("Failed to create cache path for " + codePath); 1086 } 1087 1088 ALOGV("unlink %s\n", dex_path); 1089 if (unlink(dex_path) < 0) { 1090 return error(StringPrintf("Failed to unlink %s", dex_path)); 1091 } else { 1092 return ok(); 1093 } 1094} 1095 1096struct stats { 1097 int64_t codeSize; 1098 int64_t dataSize; 1099 int64_t cacheSize; 1100}; 1101 1102#if MEASURE_DEBUG 1103static std::string toString(std::vector<int64_t> values) { 1104 std::stringstream res; 1105 res << "["; 1106 for (size_t i = 0; i < values.size(); i++) { 1107 res << values[i]; 1108 if (i < values.size() - 1) { 1109 res << ","; 1110 } 1111 } 1112 res << "]"; 1113 return res.str(); 1114} 1115#endif 1116 1117static void collectQuotaStats(const std::string& device, int32_t userId, 1118 int32_t appId, struct stats* stats, struct stats* extStats) { 1119 if (device.empty()) return; 1120 1121 struct dqblk dq; 1122 1123 uid_t uid = multiuser_get_uid(userId, appId); 1124 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1125 reinterpret_cast<char*>(&dq)) != 0) { 1126 if (errno != ESRCH) { 1127 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1128 } 1129 } else { 1130#if MEASURE_DEBUG 1131 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1132#endif 1133 stats->dataSize += dq.dqb_curspace; 1134 } 1135 1136 int cacheGid = multiuser_get_cache_gid(userId, appId); 1137 if (cacheGid != -1) { 1138 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 1139 reinterpret_cast<char*>(&dq)) != 0) { 1140 if (errno != ESRCH) { 1141 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 1142 } 1143 } else { 1144#if MEASURE_DEBUG 1145 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 1146#endif 1147 stats->cacheSize += dq.dqb_curspace; 1148 } 1149 } 1150 1151#if HACK_FOR_37193650 1152 extStats->dataSize = extStats->dataSize; 1153#else 1154 int extGid = multiuser_get_ext_gid(userId, appId); 1155 if (extGid != -1) { 1156 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extGid, 1157 reinterpret_cast<char*>(&dq)) != 0) { 1158 if (errno != ESRCH) { 1159 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extGid; 1160 } 1161 } else { 1162#if MEASURE_DEBUG 1163 LOG(DEBUG) << "quotactl() for GID " << extGid << " " << dq.dqb_curspace; 1164#endif 1165 extStats->dataSize += dq.dqb_curspace; 1166 } 1167 } 1168#endif 1169 1170 int sharedGid = multiuser_get_shared_gid(userId, appId); 1171 if (sharedGid != -1) { 1172 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 1173 reinterpret_cast<char*>(&dq)) != 0) { 1174 if (errno != ESRCH) { 1175 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 1176 } 1177 } else { 1178#if MEASURE_DEBUG 1179 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 1180#endif 1181 stats->codeSize += dq.dqb_curspace; 1182 } 1183 } 1184} 1185 1186static void collectManualStats(const std::string& path, struct stats* stats) { 1187 DIR *d; 1188 int dfd; 1189 struct dirent *de; 1190 struct stat s; 1191 1192 d = opendir(path.c_str()); 1193 if (d == nullptr) { 1194 if (errno != ENOENT) { 1195 PLOG(WARNING) << "Failed to open " << path; 1196 } 1197 return; 1198 } 1199 dfd = dirfd(d); 1200 while ((de = readdir(d))) { 1201 const char *name = de->d_name; 1202 1203 int64_t size = 0; 1204 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 1205 size = s.st_blocks * 512; 1206 } 1207 1208 if (de->d_type == DT_DIR) { 1209 if (!strcmp(name, ".")) { 1210 // Don't recurse, but still count node size 1211 } else if (!strcmp(name, "..")) { 1212 // Don't recurse or count node size 1213 continue; 1214 } else { 1215 // Measure all children nodes 1216 size = 0; 1217 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1218 } 1219 1220 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1221 stats->cacheSize += size; 1222 } 1223 } 1224 1225 // Legacy symlink isn't owned by app 1226 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1227 continue; 1228 } 1229 1230 // Everything found inside is considered data 1231 stats->dataSize += size; 1232 } 1233 closedir(d); 1234} 1235 1236static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1237 bool exclude_apps = false) { 1238 DIR *d; 1239 int dfd; 1240 struct dirent *de; 1241 struct stat s; 1242 1243 d = opendir(path.c_str()); 1244 if (d == nullptr) { 1245 if (errno != ENOENT) { 1246 PLOG(WARNING) << "Failed to open " << path; 1247 } 1248 return; 1249 } 1250 dfd = dirfd(d); 1251 while ((de = readdir(d))) { 1252 if (de->d_type == DT_DIR) { 1253 const char *name = de->d_name; 1254 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1255 continue; 1256 } 1257 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1258 continue; 1259 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1260 continue; 1261 } else { 1262 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1263 } 1264 } 1265 } 1266 closedir(d); 1267} 1268 1269static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { 1270 FTS *fts; 1271 FTSENT *p; 1272 char *argv[] = { (char*) path.c_str(), nullptr }; 1273 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1274 PLOG(ERROR) << "Failed to fts_open " << path; 1275 return; 1276 } 1277 while ((p = fts_read(fts)) != NULL) { 1278 p->fts_number = p->fts_parent->fts_number; 1279 switch (p->fts_info) { 1280 case FTS_D: 1281 if (p->fts_level == 4 1282 && !strcmp(p->fts_name, "cache") 1283 && !strcmp(p->fts_parent->fts_parent->fts_name, "data") 1284 && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { 1285 p->fts_number = 1; 1286 } 1287 // Fall through to count the directory 1288 case FTS_DEFAULT: 1289 case FTS_F: 1290 case FTS_SL: 1291 case FTS_SLNONE: 1292 int64_t size = (p->fts_statp->st_blocks * 512); 1293 if (p->fts_number == 1) { 1294 stats->cacheSize += size; 1295 } 1296 stats->dataSize += size; 1297 break; 1298 } 1299 } 1300 fts_close(fts); 1301} 1302 1303binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1304 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1305 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1306 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1307 ENFORCE_UID(AID_SYSTEM); 1308 CHECK_ARGUMENT_UUID(uuid); 1309 for (auto packageName : packageNames) { 1310 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1311 } 1312 // NOTE: Locking is relaxed on this method, since it's limited to 1313 // read-only measurements without mutation. 1314 1315 // When modifying this logic, always verify using tests: 1316 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1317 1318#if MEASURE_DEBUG 1319 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1320#endif 1321 1322 // Here's a summary of the common storage locations across the platform, 1323 // and how they're each tagged: 1324 // 1325 // /data/app/com.example UID system 1326 // /data/app/com.example/oat UID system 1327 // /data/user/0/com.example UID u0_a10 GID u0_a10 1328 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1329 // /data/media/0/foo.txt UID u0_media_rw 1330 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1331 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1332 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1333 // /data/media/obb/com.example UID system 1334 1335 struct stats stats; 1336 struct stats extStats; 1337 memset(&stats, 0, sizeof(stats)); 1338 memset(&extStats, 0, sizeof(extStats)); 1339 1340 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1341 1342 auto device = findQuotaDeviceForUuid(uuid); 1343 if (device.empty()) { 1344 flags &= ~FLAG_USE_QUOTA; 1345 } 1346 1347 ATRACE_BEGIN("obb"); 1348 for (auto packageName : packageNames) { 1349 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1350 calculate_tree_size(obbCodePath, &extStats.codeSize); 1351 } 1352 ATRACE_END(); 1353 1354 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1355 ATRACE_BEGIN("code"); 1356 for (auto codePath : codePaths) { 1357 calculate_tree_size(codePath, &stats.codeSize, -1, 1358 multiuser_get_shared_gid(userId, appId)); 1359 } 1360 ATRACE_END(); 1361 1362 ATRACE_BEGIN("quota"); 1363 collectQuotaStats(device, userId, appId, &stats, &extStats); 1364 ATRACE_END(); 1365 1366#if HACK_FOR_37193650 1367 ATRACE_BEGIN("external"); 1368 for (size_t i = 0; i < packageNames.size(); i++) { 1369 const char* pkgname = packageNames[i].c_str(); 1370 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1371 calculate_tree_size(extPath, &extStats.dataSize); 1372 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1373 calculate_tree_size(mediaPath, &extStats.dataSize); 1374 } 1375 ATRACE_END(); 1376#endif 1377 } else { 1378 ATRACE_BEGIN("code"); 1379 for (auto codePath : codePaths) { 1380 calculate_tree_size(codePath, &stats.codeSize); 1381 } 1382 ATRACE_END(); 1383 1384 for (size_t i = 0; i < packageNames.size(); i++) { 1385 const char* pkgname = packageNames[i].c_str(); 1386 1387 ATRACE_BEGIN("data"); 1388 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1389 collectManualStats(cePath, &stats); 1390 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1391 collectManualStats(dePath, &stats); 1392 ATRACE_END(); 1393 1394 ATRACE_BEGIN("profiles"); 1395 auto userProfilePath = create_primary_current_profile_package_dir_path(userId, pkgname); 1396 calculate_tree_size(userProfilePath, &stats.dataSize); 1397 auto refProfilePath = create_primary_reference_profile_package_dir_path(pkgname); 1398 calculate_tree_size(refProfilePath, &stats.codeSize); 1399 ATRACE_END(); 1400 1401 ATRACE_BEGIN("external"); 1402 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1403 collectManualStats(extPath, &extStats); 1404 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1405 calculate_tree_size(mediaPath, &extStats.dataSize); 1406 ATRACE_END(); 1407 } 1408 1409 ATRACE_BEGIN("dalvik"); 1410 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1411 if (sharedGid != -1) { 1412 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1413 sharedGid, -1); 1414 } 1415 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, 1416 multiuser_get_uid(userId, appId), -1); 1417 ATRACE_END(); 1418 } 1419 1420 std::vector<int64_t> ret; 1421 ret.push_back(stats.codeSize); 1422 ret.push_back(stats.dataSize); 1423 ret.push_back(stats.cacheSize); 1424 ret.push_back(extStats.codeSize); 1425 ret.push_back(extStats.dataSize); 1426 ret.push_back(extStats.cacheSize); 1427#if MEASURE_DEBUG 1428 LOG(DEBUG) << "Final result " << toString(ret); 1429#endif 1430 *_aidl_return = ret; 1431 return ok(); 1432} 1433 1434binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1435 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1436 std::vector<int64_t>* _aidl_return) { 1437 ENFORCE_UID(AID_SYSTEM); 1438 CHECK_ARGUMENT_UUID(uuid); 1439 // NOTE: Locking is relaxed on this method, since it's limited to 1440 // read-only measurements without mutation. 1441 1442 // When modifying this logic, always verify using tests: 1443 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1444 1445#if MEASURE_DEBUG 1446 LOG(INFO) << "Measuring user " << userId; 1447#endif 1448 1449 struct stats stats; 1450 struct stats extStats; 1451 memset(&stats, 0, sizeof(stats)); 1452 memset(&extStats, 0, sizeof(extStats)); 1453 1454 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1455 1456 auto device = findQuotaDeviceForUuid(uuid); 1457 if (device.empty()) { 1458 flags &= ~FLAG_USE_QUOTA; 1459 } 1460 1461#if HACK_FOR_37193650 1462 if (userId != 0) { 1463 flags &= ~FLAG_USE_QUOTA; 1464 } 1465#endif 1466 1467 if (flags & FLAG_USE_QUOTA) { 1468 struct dqblk dq; 1469 1470 ATRACE_BEGIN("obb"); 1471 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), AID_MEDIA_OBB, 1472 reinterpret_cast<char*>(&dq)) != 0) { 1473 if (errno != ESRCH) { 1474 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << AID_MEDIA_OBB; 1475 } 1476 } else { 1477#if MEASURE_DEBUG 1478 LOG(DEBUG) << "quotactl() for GID " << AID_MEDIA_OBB << " " << dq.dqb_curspace; 1479#endif 1480 extStats.codeSize += dq.dqb_curspace; 1481 } 1482 ATRACE_END(); 1483 1484 ATRACE_BEGIN("code"); 1485 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1486 ATRACE_END(); 1487 1488 ATRACE_BEGIN("data"); 1489 auto cePath = create_data_user_ce_path(uuid_, userId); 1490 collectManualStatsForUser(cePath, &stats, true); 1491 auto dePath = create_data_user_de_path(uuid_, userId); 1492 collectManualStatsForUser(dePath, &stats, true); 1493 ATRACE_END(); 1494 1495 ATRACE_BEGIN("profile"); 1496 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1497 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1498 auto refProfilePath = create_primary_ref_profile_dir_path(); 1499 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1500 ATRACE_END(); 1501 1502 ATRACE_BEGIN("external"); 1503 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1504 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1505 reinterpret_cast<char*>(&dq)) != 0) { 1506 if (errno != ESRCH) { 1507 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1508 } 1509 } else { 1510#if MEASURE_DEBUG 1511 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1512#endif 1513 extStats.dataSize += dq.dqb_curspace; 1514 } 1515 ATRACE_END(); 1516 1517 ATRACE_BEGIN("dalvik"); 1518 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1519 -1, -1, true); 1520 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, 1521 -1, -1, true); 1522 ATRACE_END(); 1523 1524 ATRACE_BEGIN("quota"); 1525 for (auto appId : appIds) { 1526 if (appId >= AID_APP_START) { 1527 collectQuotaStats(device, userId, appId, &stats, &extStats); 1528 1529#if MEASURE_DEBUG 1530 // Sleep to make sure we don't lose logs 1531 usleep(1); 1532#endif 1533 } 1534 } 1535 ATRACE_END(); 1536 } else { 1537 ATRACE_BEGIN("obb"); 1538 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1539 calculate_tree_size(obbPath, &extStats.codeSize); 1540 ATRACE_END(); 1541 1542 ATRACE_BEGIN("code"); 1543 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1544 ATRACE_END(); 1545 1546 ATRACE_BEGIN("data"); 1547 auto cePath = create_data_user_ce_path(uuid_, userId); 1548 collectManualStatsForUser(cePath, &stats); 1549 auto dePath = create_data_user_de_path(uuid_, userId); 1550 collectManualStatsForUser(dePath, &stats); 1551 ATRACE_END(); 1552 1553 ATRACE_BEGIN("profile"); 1554 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1555 calculate_tree_size(userProfilePath, &stats.dataSize); 1556 auto refProfilePath = create_primary_ref_profile_dir_path(); 1557 calculate_tree_size(refProfilePath, &stats.codeSize); 1558 ATRACE_END(); 1559 1560 ATRACE_BEGIN("external"); 1561 auto dataMediaPath = create_data_media_path(uuid_, userId); 1562 collectManualExternalStatsForUser(dataMediaPath, &extStats); 1563#if MEASURE_DEBUG 1564 LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " 1565 << extStats.cacheSize; 1566#endif 1567 ATRACE_END(); 1568 1569 ATRACE_BEGIN("dalvik"); 1570 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1571 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize); 1572 ATRACE_END(); 1573 } 1574 1575 std::vector<int64_t> ret; 1576 ret.push_back(stats.codeSize); 1577 ret.push_back(stats.dataSize); 1578 ret.push_back(stats.cacheSize); 1579 ret.push_back(extStats.codeSize); 1580 ret.push_back(extStats.dataSize); 1581 ret.push_back(extStats.cacheSize); 1582#if MEASURE_DEBUG 1583 LOG(DEBUG) << "Final result " << toString(ret); 1584#endif 1585 *_aidl_return = ret; 1586 return ok(); 1587} 1588 1589binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1590 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1591 ENFORCE_UID(AID_SYSTEM); 1592 CHECK_ARGUMENT_UUID(uuid); 1593 // NOTE: Locking is relaxed on this method, since it's limited to 1594 // read-only measurements without mutation. 1595 1596 // When modifying this logic, always verify using tests: 1597 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1598 1599#if MEASURE_DEBUG 1600 LOG(INFO) << "Measuring external " << userId; 1601#endif 1602 1603 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1604 1605 int64_t totalSize = 0; 1606 int64_t audioSize = 0; 1607 int64_t videoSize = 0; 1608 int64_t imageSize = 0; 1609 1610 auto device = findQuotaDeviceForUuid(uuid); 1611 if (device.empty()) { 1612 flags &= ~FLAG_USE_QUOTA; 1613 } 1614 1615 if (flags & FLAG_USE_QUOTA) { 1616 struct dqblk dq; 1617 1618 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1619 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1620 reinterpret_cast<char*>(&dq)) != 0) { 1621 if (errno != ESRCH) { 1622 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1623 } 1624 } else { 1625#if MEASURE_DEBUG 1626 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1627#endif 1628 totalSize = dq.dqb_curspace; 1629 } 1630 1631 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1632 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1633 reinterpret_cast<char*>(&dq)) == 0) { 1634#if MEASURE_DEBUG 1635 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1636#endif 1637 audioSize = dq.dqb_curspace; 1638 } 1639 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1640 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1641 reinterpret_cast<char*>(&dq)) == 0) { 1642#if MEASURE_DEBUG 1643 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1644#endif 1645 videoSize = dq.dqb_curspace; 1646 } 1647 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1648 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1649 reinterpret_cast<char*>(&dq)) == 0) { 1650#if MEASURE_DEBUG 1651 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1652#endif 1653 imageSize = dq.dqb_curspace; 1654 } 1655 } else { 1656 FTS *fts; 1657 FTSENT *p; 1658 auto path = create_data_media_path(uuid_, userId); 1659 char *argv[] = { (char*) path.c_str(), nullptr }; 1660 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1661 return error("Failed to fts_open " + path); 1662 } 1663 while ((p = fts_read(fts)) != NULL) { 1664 char* ext; 1665 int64_t size = (p->fts_statp->st_blocks * 512); 1666 switch (p->fts_info) { 1667 case FTS_F: 1668 // Only categorize files not belonging to apps 1669 if (p->fts_parent->fts_number == 0) { 1670 ext = strrchr(p->fts_name, '.'); 1671 if (ext != nullptr) { 1672 switch (MatchExtension(++ext)) { 1673 case AID_MEDIA_AUDIO: audioSize += size; break; 1674 case AID_MEDIA_VIDEO: videoSize += size; break; 1675 case AID_MEDIA_IMAGE: imageSize += size; break; 1676 } 1677 } 1678 } 1679 // Fall through to always count against total 1680 case FTS_D: 1681 // Ignore data belonging to specific apps 1682 p->fts_number = p->fts_parent->fts_number; 1683 if (p->fts_level == 1 && !strcmp(p->fts_name, "Android")) { 1684 p->fts_number = 1; 1685 } 1686 case FTS_DEFAULT: 1687 case FTS_SL: 1688 case FTS_SLNONE: 1689 totalSize += size; 1690 break; 1691 } 1692 } 1693 fts_close(fts); 1694 } 1695 1696 std::vector<int64_t> ret; 1697 ret.push_back(totalSize); 1698 ret.push_back(audioSize); 1699 ret.push_back(videoSize); 1700 ret.push_back(imageSize); 1701#if MEASURE_DEBUG 1702 LOG(DEBUG) << "Final result " << toString(ret); 1703#endif 1704 *_aidl_return = ret; 1705 return ok(); 1706} 1707 1708binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, 1709 int32_t userId, int32_t appId, int64_t cacheQuota) { 1710 ENFORCE_UID(AID_SYSTEM); 1711 CHECK_ARGUMENT_UUID(uuid); 1712 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 1713 1714 int32_t uid = multiuser_get_uid(userId, appId); 1715 mCacheQuotas[uid] = cacheQuota; 1716 1717 return ok(); 1718} 1719 1720// Dumps the contents of a profile file, using pkgname's dex files for pretty 1721// printing the result. 1722binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1723 const std::string& codePaths, bool* _aidl_return) { 1724 ENFORCE_UID(AID_SYSTEM); 1725 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1726 std::lock_guard<std::recursive_mutex> lock(mLock); 1727 1728 const char* pkgname = packageName.c_str(); 1729 const char* code_paths = codePaths.c_str(); 1730 1731 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1732 return ok(); 1733} 1734 1735// TODO: Consider returning error codes. 1736binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1737 bool* _aidl_return) { 1738 ENFORCE_UID(AID_SYSTEM); 1739 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1740 std::lock_guard<std::recursive_mutex> lock(mLock); 1741 1742 *_aidl_return = analyze_primary_profiles(uid, packageName); 1743 return ok(); 1744} 1745 1746binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1747 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1748 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1749 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1750 const std::unique_ptr<std::string>& sharedLibraries, 1751 const std::unique_ptr<std::string>& seInfo) { 1752 ENFORCE_UID(AID_SYSTEM); 1753 CHECK_ARGUMENT_UUID(uuid); 1754 if (packageName && *packageName != "*") { 1755 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1756 } 1757 std::lock_guard<std::recursive_mutex> lock(mLock); 1758 1759 const char* apk_path = apkPath.c_str(); 1760 const char* pkgname = packageName ? packageName->c_str() : "*"; 1761 const char* instruction_set = instructionSet.c_str(); 1762 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1763 const char* compiler_filter = compilerFilter.c_str(); 1764 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1765 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1766 const char* se_info = seInfo ? seInfo->c_str() : nullptr; 1767 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1768 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries, se_info); 1769 return res ? error(res, "Failed to dexopt") : ok(); 1770} 1771 1772binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1773 ENFORCE_UID(AID_SYSTEM); 1774 std::lock_guard<std::recursive_mutex> lock(mLock); 1775 1776 const char* instruction_set = instructionSet.c_str(); 1777 1778 char boot_marker_path[PKG_PATH_MAX]; 1779 sprintf(boot_marker_path, 1780 "%s/%s/%s/.booting", 1781 android_data_dir.path, 1782 DALVIK_CACHE, 1783 instruction_set); 1784 1785 ALOGV("mark_boot_complete : %s", boot_marker_path); 1786 if (unlink(boot_marker_path) != 0) { 1787 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1788 } 1789 return ok(); 1790} 1791 1792void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1793 struct stat* statbuf) 1794{ 1795 while (path[basepos] != 0) { 1796 if (path[basepos] == '/') { 1797 path[basepos] = 0; 1798 if (lstat(path, statbuf) < 0) { 1799 ALOGV("Making directory: %s\n", path); 1800 if (mkdir(path, mode) == 0) { 1801 chown(path, uid, gid); 1802 } else { 1803 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1804 } 1805 } 1806 path[basepos] = '/'; 1807 basepos++; 1808 } 1809 basepos++; 1810 } 1811} 1812 1813binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1814 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1815 const std::string& nativeLibPath32, int32_t userId) { 1816 ENFORCE_UID(AID_SYSTEM); 1817 CHECK_ARGUMENT_UUID(uuid); 1818 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1819 std::lock_guard<std::recursive_mutex> lock(mLock); 1820 1821 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1822 const char* pkgname = packageName.c_str(); 1823 const char* asecLibDir = nativeLibPath32.c_str(); 1824 struct stat s, libStat; 1825 binder::Status res = ok(); 1826 1827 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1828 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1829 1830 const char* pkgdir = _pkgdir.c_str(); 1831 const char* libsymlink = _libsymlink.c_str(); 1832 1833 if (stat(pkgdir, &s) < 0) { 1834 return error("Failed to stat " + _pkgdir); 1835 } 1836 1837 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1838 return error("Failed to chown " + _pkgdir); 1839 } 1840 1841 if (chmod(pkgdir, 0700) < 0) { 1842 res = error("Failed to chmod " + _pkgdir); 1843 goto out; 1844 } 1845 1846 if (lstat(libsymlink, &libStat) < 0) { 1847 if (errno != ENOENT) { 1848 res = error("Failed to stat " + _libsymlink); 1849 goto out; 1850 } 1851 } else { 1852 if (S_ISDIR(libStat.st_mode)) { 1853 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1854 res = error("Failed to delete " + _libsymlink); 1855 goto out; 1856 } 1857 } else if (S_ISLNK(libStat.st_mode)) { 1858 if (unlink(libsymlink) < 0) { 1859 res = error("Failed to unlink " + _libsymlink); 1860 goto out; 1861 } 1862 } 1863 } 1864 1865 if (symlink(asecLibDir, libsymlink) < 0) { 1866 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1867 goto out; 1868 } 1869 1870out: 1871 if (chmod(pkgdir, s.st_mode) < 0) { 1872 auto msg = "Failed to cleanup chmod " + _pkgdir; 1873 if (res.isOk()) { 1874 res = error(msg); 1875 } else { 1876 PLOG(ERROR) << msg; 1877 } 1878 } 1879 1880 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1881 auto msg = "Failed to cleanup chown " + _pkgdir; 1882 if (res.isOk()) { 1883 res = error(msg); 1884 } else { 1885 PLOG(ERROR) << msg; 1886 } 1887 } 1888 1889 return res; 1890} 1891 1892static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1893{ 1894 static const char *IDMAP_BIN = "/system/bin/idmap"; 1895 static const size_t MAX_INT_LEN = 32; 1896 char idmap_str[MAX_INT_LEN]; 1897 1898 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1899 1900 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1901 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1902} 1903 1904// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1905// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1906static int flatten_path(const char *prefix, const char *suffix, 1907 const char *overlay_path, char *idmap_path, size_t N) 1908{ 1909 if (overlay_path == NULL || idmap_path == NULL) { 1910 return -1; 1911 } 1912 const size_t len_overlay_path = strlen(overlay_path); 1913 // will access overlay_path + 1 further below; requires absolute path 1914 if (len_overlay_path < 2 || *overlay_path != '/') { 1915 return -1; 1916 } 1917 const size_t len_idmap_root = strlen(prefix); 1918 const size_t len_suffix = strlen(suffix); 1919 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1920 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1921 // additions below would cause overflow 1922 return -1; 1923 } 1924 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1925 return -1; 1926 } 1927 memset(idmap_path, 0, N); 1928 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1929 char *ch = idmap_path + len_idmap_root; 1930 while (*ch != '\0') { 1931 if (*ch == '/') { 1932 *ch = '@'; 1933 } 1934 ++ch; 1935 } 1936 return 0; 1937} 1938 1939binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1940 const std::string& overlayApkPath, int32_t uid) { 1941 ENFORCE_UID(AID_SYSTEM); 1942 std::lock_guard<std::recursive_mutex> lock(mLock); 1943 1944 const char* target_apk = targetApkPath.c_str(); 1945 const char* overlay_apk = overlayApkPath.c_str(); 1946 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1947 1948 int idmap_fd = -1; 1949 char idmap_path[PATH_MAX]; 1950 1951 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1952 idmap_path, sizeof(idmap_path)) == -1) { 1953 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1954 goto fail; 1955 } 1956 1957 unlink(idmap_path); 1958 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1959 if (idmap_fd < 0) { 1960 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1961 goto fail; 1962 } 1963 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1964 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1965 goto fail; 1966 } 1967 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1968 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1969 goto fail; 1970 } 1971 1972 pid_t pid; 1973 pid = fork(); 1974 if (pid == 0) { 1975 /* child -- drop privileges before continuing */ 1976 if (setgid(uid) != 0) { 1977 ALOGE("setgid(%d) failed during idmap\n", uid); 1978 exit(1); 1979 } 1980 if (setuid(uid) != 0) { 1981 ALOGE("setuid(%d) failed during idmap\n", uid); 1982 exit(1); 1983 } 1984 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1985 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1986 exit(1); 1987 } 1988 1989 run_idmap(target_apk, overlay_apk, idmap_fd); 1990 exit(1); /* only if exec call to idmap failed */ 1991 } else { 1992 int status = wait_child(pid); 1993 if (status != 0) { 1994 ALOGE("idmap failed, status=0x%04x\n", status); 1995 goto fail; 1996 } 1997 } 1998 1999 close(idmap_fd); 2000 return ok(); 2001fail: 2002 if (idmap_fd >= 0) { 2003 close(idmap_fd); 2004 unlink(idmap_path); 2005 } 2006 return error(); 2007} 2008 2009binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) { 2010 const char* overlay_apk = overlayApkPath.c_str(); 2011 char idmap_path[PATH_MAX]; 2012 2013 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 2014 idmap_path, sizeof(idmap_path)) == -1) { 2015 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 2016 return error(); 2017 } 2018 if (unlink(idmap_path) < 0) { 2019 ALOGE("couldn't unlink idmap file %s\n", idmap_path); 2020 return error(); 2021 } 2022 return ok(); 2023} 2024 2025binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 2026 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 2027 const std::string& seInfo) { 2028 ENFORCE_UID(AID_SYSTEM); 2029 CHECK_ARGUMENT_UUID(uuid); 2030 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2031 std::lock_guard<std::recursive_mutex> lock(mLock); 2032 2033 binder::Status res = ok(); 2034 2035 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 2036 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 2037 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 2038 const char* pkgName = packageName.c_str(); 2039 const char* seinfo = seInfo.c_str(); 2040 2041 uid_t uid = multiuser_get_uid(userId, appId); 2042 if (flags & FLAG_STORAGE_CE) { 2043 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 2044 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2045 res = error("restorecon failed for " + path); 2046 } 2047 } 2048 if (flags & FLAG_STORAGE_DE) { 2049 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 2050 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2051 res = error("restorecon failed for " + path); 2052 } 2053 } 2054 return res; 2055} 2056 2057binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 2058 const std::string& instructionSet) { 2059 ENFORCE_UID(AID_SYSTEM); 2060 std::lock_guard<std::recursive_mutex> lock(mLock); 2061 2062 const char* oat_dir = oatDir.c_str(); 2063 const char* instruction_set = instructionSet.c_str(); 2064 char oat_instr_dir[PKG_PATH_MAX]; 2065 2066 if (validate_apk_path(oat_dir)) { 2067 return error("Invalid path " + oatDir); 2068 } 2069 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2070 return error("Failed to prepare " + oatDir); 2071 } 2072 if (selinux_android_restorecon(oat_dir, 0)) { 2073 return error("Failed to restorecon " + oatDir); 2074 } 2075 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 2076 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2077 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 2078 } 2079 return ok(); 2080} 2081 2082binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 2083 ENFORCE_UID(AID_SYSTEM); 2084 std::lock_guard<std::recursive_mutex> lock(mLock); 2085 2086 if (validate_apk_path(packageDir.c_str())) { 2087 return error("Invalid path " + packageDir); 2088 } 2089 if (delete_dir_contents_and_dir(packageDir) != 0) { 2090 return error("Failed to delete " + packageDir); 2091 } 2092 return ok(); 2093} 2094 2095binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 2096 const std::string& fromBase, const std::string& toBase) { 2097 ENFORCE_UID(AID_SYSTEM); 2098 std::lock_guard<std::recursive_mutex> lock(mLock); 2099 2100 const char* relative_path = relativePath.c_str(); 2101 const char* from_base = fromBase.c_str(); 2102 const char* to_base = toBase.c_str(); 2103 char from_path[PKG_PATH_MAX]; 2104 char to_path[PKG_PATH_MAX]; 2105 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 2106 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 2107 2108 if (validate_apk_path_subdirs(from_path)) { 2109 return error(StringPrintf("Invalid from path %s", from_path)); 2110 } 2111 2112 if (validate_apk_path_subdirs(to_path)) { 2113 return error(StringPrintf("Invalid to path %s", to_path)); 2114 } 2115 2116 if (link(from_path, to_path) < 0) { 2117 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 2118 } 2119 2120 return ok(); 2121} 2122 2123binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 2124 const std::string& instructionSet, const std::string& outputPath) { 2125 ENFORCE_UID(AID_SYSTEM); 2126 std::lock_guard<std::recursive_mutex> lock(mLock); 2127 2128 const char* apk_path = apkPath.c_str(); 2129 const char* instruction_set = instructionSet.c_str(); 2130 const char* oat_dir = outputPath.c_str(); 2131 2132 bool success = move_ab(apk_path, instruction_set, oat_dir); 2133 return success ? ok() : error(); 2134} 2135 2136binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 2137 const std::string& instructionSet, const std::string& outputPath) { 2138 ENFORCE_UID(AID_SYSTEM); 2139 std::lock_guard<std::recursive_mutex> lock(mLock); 2140 2141 const char* apk_path = apkPath.c_str(); 2142 const char* instruction_set = instructionSet.c_str(); 2143 const char* oat_dir = outputPath.c_str(); 2144 2145 bool res = delete_odex(apk_path, instruction_set, oat_dir); 2146 return res ? ok() : error(); 2147} 2148 2149binder::Status InstalldNativeService::reconcileSecondaryDexFile( 2150 const std::string& dexPath, const std::string& packageName, int32_t uid, 2151 const std::vector<std::string>& isas, const std::unique_ptr<std::string>& volumeUuid, 2152 int32_t storage_flag, bool* _aidl_return) { 2153 ENFORCE_UID(AID_SYSTEM); 2154 CHECK_ARGUMENT_UUID(volumeUuid); 2155 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2156 2157 std::lock_guard<std::recursive_mutex> lock(mLock); 2158 bool result = android::installd::reconcile_secondary_dex_file( 2159 dexPath, packageName, uid, isas, volumeUuid, storage_flag, _aidl_return); 2160 return result ? ok() : error(); 2161} 2162 2163binder::Status InstalldNativeService::invalidateMounts() { 2164 ENFORCE_UID(AID_SYSTEM); 2165 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 2166 2167 mQuotaDevices.clear(); 2168 2169 std::ifstream in("/proc/mounts"); 2170 if (!in.is_open()) { 2171 return error("Failed to read mounts"); 2172 } 2173 2174 std::string source; 2175 std::string target; 2176 std::string ignored; 2177 struct dqblk dq; 2178 while (!in.eof()) { 2179 std::getline(in, source, ' '); 2180 std::getline(in, target, ' '); 2181 std::getline(in, ignored); 2182 2183 if (source.compare(0, 11, "/dev/block/") == 0) { 2184 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 2185 reinterpret_cast<char*>(&dq)) == 0) { 2186 LOG(DEBUG) << "Found " << source << " with quota"; 2187 mQuotaDevices[target] = source; 2188 2189 // ext4 only enables DQUOT_USAGE_ENABLED by default, so we 2190 // need to kick it again to enable DQUOT_LIMITS_ENABLED. 2191 if (quotactl(QCMD(Q_QUOTAON, USRQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2192 && errno != EBUSY) { 2193 PLOG(ERROR) << "Failed to enable USRQUOTA on " << source; 2194 } 2195 if (quotactl(QCMD(Q_QUOTAON, GRPQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2196 && errno != EBUSY) { 2197 PLOG(ERROR) << "Failed to enable GRPQUOTA on " << source; 2198 } 2199 } 2200 } 2201 } 2202 return ok(); 2203} 2204 2205std::string InstalldNativeService::findQuotaDeviceForUuid( 2206 const std::unique_ptr<std::string>& uuid) { 2207 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 2208 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 2209 return mQuotaDevices[path]; 2210} 2211 2212binder::Status InstalldNativeService::isQuotaSupported( 2213 const std::unique_ptr<std::string>& volumeUuid, bool* _aidl_return) { 2214 *_aidl_return = !findQuotaDeviceForUuid(volumeUuid).empty(); 2215 return ok(); 2216} 2217 2218} // namespace installd 2219} // namespace android 2220