InstalldNativeService.cpp revision 7a9059e8ed297a8e025c843b632c7c8571682b46
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; 63 64namespace android { 65namespace installd { 66 67static constexpr const char* kCpPath = "/system/bin/cp"; 68static constexpr const char* kXattrDefault = "user.default"; 69 70static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 71static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 72static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 73 74static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 75static constexpr const char* IDMAP_SUFFIX = "@idmap"; 76 77// NOTE: keep in sync with StorageManager 78static constexpr int FLAG_STORAGE_DE = 1 << 0; 79static constexpr int FLAG_STORAGE_CE = 1 << 1; 80 81// NOTE: keep in sync with Installer 82static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 83static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 84static constexpr int FLAG_USE_QUOTA = 1 << 12; 85 86#define MIN_RESTRICTED_HOME_SDK_VERSION 24 // > M 87namespace { 88 89constexpr const char* kDump = "android.permission.DUMP"; 90 91static binder::Status ok() { 92 return binder::Status::ok(); 93} 94 95static binder::Status exception(uint32_t code, const std::string& msg) { 96 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 97} 98 99static binder::Status error() { 100 return binder::Status::fromServiceSpecificError(errno); 101} 102 103static binder::Status error(const std::string& msg) { 104 PLOG(ERROR) << msg; 105 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 106} 107 108static binder::Status error(uint32_t code, const std::string& msg) { 109 LOG(ERROR) << msg << " (" << code << ")"; 110 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 111} 112 113binder::Status checkPermission(const char* permission) { 114 pid_t pid; 115 uid_t uid; 116 117 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 118 reinterpret_cast<int32_t*>(&uid))) { 119 return ok(); 120 } else { 121 return exception(binder::Status::EX_SECURITY, 122 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 123 } 124} 125 126binder::Status checkUid(uid_t expectedUid) { 127 uid_t uid = IPCThreadState::self()->getCallingUid(); 128 if (uid == expectedUid || uid == AID_ROOT) { 129 return ok(); 130 } else { 131 return exception(binder::Status::EX_SECURITY, 132 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 133 } 134} 135 136binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 137 if (!uuid || is_valid_filename(*uuid)) { 138 return ok(); 139 } else { 140 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 141 StringPrintf("UUID %s is malformed", uuid->c_str())); 142 } 143} 144 145binder::Status checkArgumentPackageName(const std::string& packageName) { 146 if (is_valid_package_name(packageName.c_str())) { 147 return ok(); 148 } else { 149 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 150 StringPrintf("Package name %s is malformed", packageName.c_str())); 151 } 152} 153 154#define ENFORCE_UID(uid) { \ 155 binder::Status status = checkUid((uid)); \ 156 if (!status.isOk()) { \ 157 return status; \ 158 } \ 159} 160 161#define CHECK_ARGUMENT_UUID(uuid) { \ 162 binder::Status status = checkArgumentUuid((uuid)); \ 163 if (!status.isOk()) { \ 164 return status; \ 165 } \ 166} 167 168#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 169 binder::Status status = \ 170 checkArgumentPackageName((packageName)); \ 171 if (!status.isOk()) { \ 172 return status; \ 173 } \ 174} 175 176} // namespace 177 178status_t InstalldNativeService::start() { 179 IPCThreadState::self()->disableBackgroundScheduling(true); 180 status_t ret = BinderService<InstalldNativeService>::publish(); 181 if (ret != android::OK) { 182 return ret; 183 } 184 sp<ProcessState> ps(ProcessState::self()); 185 ps->startThreadPool(); 186 ps->giveThreadPoolName(); 187 return android::OK; 188} 189 190status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 191 const binder::Status dump_permission = checkPermission(kDump); 192 if (!dump_permission.isOk()) { 193 const String8 msg(dump_permission.toString8()); 194 write(fd, msg.string(), msg.size()); 195 return PERMISSION_DENIED; 196 } 197 198 std::string msg = "installd is happy\n"; 199 write(fd, msg.c_str(), strlen(msg.c_str())); 200 return NO_ERROR; 201} 202 203/** 204 * Perform restorecon of the given path, but only perform recursive restorecon 205 * if the label of that top-level file actually changed. This can save us 206 * significant time by avoiding no-op traversals of large filesystem trees. 207 */ 208static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 209 bool existing) { 210 int res = 0; 211 char* before = nullptr; 212 char* after = nullptr; 213 214 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 215 // libselinux. Not needed here. 216 217 if (lgetfilecon(path.c_str(), &before) < 0) { 218 PLOG(ERROR) << "Failed before getfilecon for " << path; 219 goto fail; 220 } 221 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 222 PLOG(ERROR) << "Failed top-level restorecon for " << path; 223 goto fail; 224 } 225 if (lgetfilecon(path.c_str(), &after) < 0) { 226 PLOG(ERROR) << "Failed after getfilecon for " << path; 227 goto fail; 228 } 229 230 // If the initial top-level restorecon above changed the label, then go 231 // back and restorecon everything recursively 232 if (strcmp(before, after)) { 233 if (existing) { 234 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 235 << path << "; running recursive restorecon"; 236 } 237 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 238 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 239 PLOG(ERROR) << "Failed recursive restorecon for " << path; 240 goto fail; 241 } 242 } 243 244 goto done; 245fail: 246 res = -1; 247done: 248 free(before); 249 free(after); 250 return res; 251} 252 253static int restorecon_app_data_lazy(const std::string& parent, const char* name, 254 const std::string& seInfo, uid_t uid, bool existing) { 255 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 256 existing); 257} 258 259static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 260 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 261 PLOG(ERROR) << "Failed to prepare " << path; 262 return -1; 263 } 264 return 0; 265} 266 267/** 268 * Prepare an app cache directory, which offers to fix-up the GID and 269 * directory mode flags during a platform upgrade. 270 */ 271static int prepare_app_cache_dir(const std::string& parent, const char* name, mode_t target_mode, 272 uid_t uid, gid_t gid) { 273 auto path = StringPrintf("%s/%s", parent.c_str(), name); 274 struct stat st; 275 if (stat(path.c_str(), &st) != 0) { 276 if (errno == ENOENT) { 277 // This is fine, just create it 278 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, gid) != 0) { 279 PLOG(ERROR) << "Failed to prepare " << path; 280 return -1; 281 } else { 282 return 0; 283 } 284 } else { 285 PLOG(ERROR) << "Failed to stat " << path; 286 return -1; 287 } 288 } 289 290 mode_t actual_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO | S_ISGID); 291 if (st.st_uid != uid) { 292 // Mismatched UID is real trouble; we can't recover 293 LOG(ERROR) << "Mismatched UID at " << path << ": found " << st.st_uid 294 << " but expected " << uid; 295 return -1; 296 } else if (st.st_gid == gid && actual_mode == target_mode) { 297 // Everything looks good! 298 return 0; 299 } 300 301 // Directory is owned correctly, but GID or mode mismatch means it's 302 // probably a platform upgrade so we need to fix them 303 FTS *fts; 304 FTSENT *p; 305 char *argv[] = { (char*) path.c_str(), nullptr }; 306 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 307 PLOG(ERROR) << "Failed to fts_open " << path; 308 return -1; 309 } 310 while ((p = fts_read(fts)) != NULL) { 311 switch (p->fts_info) { 312 case FTS_DP: 313 if (chmod(p->fts_accpath, target_mode) != 0) { 314 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 315 } 316 // Intentional fall through to also set GID 317 case FTS_F: 318 if (chown(p->fts_accpath, -1, gid) != 0) { 319 PLOG(WARNING) << "Failed to chown " << p->fts_path; 320 } 321 break; 322 case FTS_SL: 323 case FTS_SLNONE: 324 if (lchown(p->fts_accpath, -1, gid) != 0) { 325 PLOG(WARNING) << "Failed to chown " << p->fts_path; 326 } 327 break; 328 } 329 } 330 fts_close(fts); 331 return 0; 332} 333 334binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 335 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 336 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 337 ENFORCE_UID(AID_SYSTEM); 338 CHECK_ARGUMENT_UUID(uuid); 339 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 340 std::lock_guard<std::recursive_mutex> lock(mLock); 341 342 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 343 const char* pkgname = packageName.c_str(); 344 345 // Assume invalid inode unless filled in below 346 if (_aidl_return != nullptr) *_aidl_return = -1; 347 348 int32_t uid = multiuser_get_uid(userId, appId); 349 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 350 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 351 352 // If UID doesn't have a specific cache GID, use UID value 353 if (cacheGid == -1) { 354 cacheGid = uid; 355 } 356 357 if (flags & FLAG_STORAGE_CE) { 358 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 359 bool existing = (access(path.c_str(), F_OK) == 0); 360 361 if (prepare_app_dir(path, targetMode, uid) || 362 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 363 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 364 return error("Failed to prepare " + path); 365 } 366 367 // Consider restorecon over contents if label changed 368 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 369 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 370 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 371 return error("Failed to restorecon " + path); 372 } 373 374 // Remember inode numbers of cache directories so that we can clear 375 // contents while CE storage is locked 376 if (write_path_inode(path, "cache", kXattrInodeCache) || 377 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 378 return error("Failed to write_path_inode for " + path); 379 } 380 381 // And return the CE inode of the top-level data directory so we can 382 // clear contents while CE storage is locked 383 if ((_aidl_return != nullptr) 384 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 385 return error("Failed to get_path_inode for " + path); 386 } 387 } 388 if (flags & FLAG_STORAGE_DE) { 389 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 390 bool existing = (access(path.c_str(), F_OK) == 0); 391 392 if (prepare_app_dir(path, targetMode, uid) || 393 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 394 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 395 return error("Failed to prepare " + path); 396 } 397 398 // Consider restorecon over contents if label changed 399 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 400 return error("Failed to restorecon " + path); 401 } 402 403 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 404 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 405 // read-write-execute only for the app user. 406 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 407 return error("Failed to prepare " + profile_path); 408 } 409 std::string profile_file = create_primary_profile(profile_path); 410 // read-write only for the app user. 411 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 412 return error("Failed to prepare " + profile_path); 413 } 414 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 415 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 416 // profiles. 417 int shared_app_gid = multiuser_get_shared_gid(0, appId); 418 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 419 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 420 return error("Failed to prepare " + ref_profile_path); 421 } 422 } 423 } 424 return ok(); 425} 426 427binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 428 const std::string& packageName, int32_t userId, int32_t flags) { 429 ENFORCE_UID(AID_SYSTEM); 430 CHECK_ARGUMENT_UUID(uuid); 431 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 432 std::lock_guard<std::recursive_mutex> lock(mLock); 433 434 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 435 const char* pkgname = packageName.c_str(); 436 437 // This method only exists to upgrade system apps that have requested 438 // forceDeviceEncrypted, so their default storage always lives in a 439 // consistent location. This only works on non-FBE devices, since we 440 // never want to risk exposing data on a device with real CE/DE storage. 441 442 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 443 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 444 445 // If neither directory is marked as default, assume CE is default 446 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 447 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 448 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 449 return error("Failed to mark default storage " + ce_path); 450 } 451 } 452 453 // Migrate default data location if needed 454 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 455 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 456 457 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 458 LOG(WARNING) << "Requested default storage " << target 459 << " is not active; migrating from " << source; 460 if (delete_dir_contents_and_dir(target) != 0) { 461 return error("Failed to delete " + target); 462 } 463 if (rename(source.c_str(), target.c_str()) != 0) { 464 return error("Failed to rename " + source + " to " + target); 465 } 466 } 467 468 return ok(); 469} 470 471 472binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 473 ENFORCE_UID(AID_SYSTEM); 474 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 475 std::lock_guard<std::recursive_mutex> lock(mLock); 476 477 const char* pkgname = packageName.c_str(); 478 binder::Status res = ok(); 479 if (!clear_reference_profile(pkgname)) { 480 res = error("Failed to clear reference profile for " + packageName); 481 } 482 if (!clear_current_profiles(pkgname)) { 483 res = error("Failed to clear current profiles for " + packageName); 484 } 485 return res; 486} 487 488binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 489 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 490 ENFORCE_UID(AID_SYSTEM); 491 CHECK_ARGUMENT_UUID(uuid); 492 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 493 std::lock_guard<std::recursive_mutex> lock(mLock); 494 495 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 496 const char* pkgname = packageName.c_str(); 497 498 binder::Status res = ok(); 499 if (flags & FLAG_STORAGE_CE) { 500 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 501 if (flags & FLAG_CLEAR_CACHE_ONLY) { 502 path = read_path_inode(path, "cache", kXattrInodeCache); 503 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 504 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 505 } 506 if (access(path.c_str(), F_OK) == 0) { 507 if (delete_dir_contents(path) != 0) { 508 res = error("Failed to delete contents of " + path); 509 } 510 } 511 } 512 if (flags & FLAG_STORAGE_DE) { 513 std::string suffix = ""; 514 bool only_cache = false; 515 if (flags & FLAG_CLEAR_CACHE_ONLY) { 516 suffix = CACHE_DIR_POSTFIX; 517 only_cache = true; 518 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 519 suffix = CODE_CACHE_DIR_POSTFIX; 520 only_cache = true; 521 } 522 523 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 524 if (access(path.c_str(), F_OK) == 0) { 525 if (delete_dir_contents(path) != 0) { 526 res = error("Failed to delete contents of " + path); 527 } 528 } 529 if (!only_cache) { 530 if (!clear_current_profile(pkgname, userId)) { 531 res = error("Failed to clear current profile for " + packageName); 532 } 533 } 534 } 535 return res; 536} 537 538static int destroy_app_reference_profile(const char *pkgname) { 539 return delete_dir_contents_and_dir( 540 create_data_ref_profile_package_path(pkgname), 541 /*ignore_if_missing*/ true); 542} 543 544static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 545 return delete_dir_contents_and_dir( 546 create_data_user_profile_package_path(userid, pkgname), 547 /*ignore_if_missing*/ true); 548} 549 550binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 551 ENFORCE_UID(AID_SYSTEM); 552 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 553 std::lock_guard<std::recursive_mutex> lock(mLock); 554 555 const char* pkgname = packageName.c_str(); 556 binder::Status res = ok(); 557 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 558 for (auto user : users) { 559 if (destroy_app_current_profiles(pkgname, user) != 0) { 560 res = error("Failed to destroy current profiles for " + packageName); 561 } 562 } 563 if (destroy_app_reference_profile(pkgname) != 0) { 564 res = error("Failed to destroy reference profile for " + packageName); 565 } 566 return res; 567} 568 569binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 570 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 571 ENFORCE_UID(AID_SYSTEM); 572 CHECK_ARGUMENT_UUID(uuid); 573 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 574 std::lock_guard<std::recursive_mutex> lock(mLock); 575 576 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 577 const char* pkgname = packageName.c_str(); 578 579 binder::Status res = ok(); 580 if (flags & FLAG_STORAGE_CE) { 581 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 582 if (delete_dir_contents_and_dir(path) != 0) { 583 res = error("Failed to delete " + path); 584 } 585 } 586 if (flags & FLAG_STORAGE_DE) { 587 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 588 if (delete_dir_contents_and_dir(path) != 0) { 589 res = error("Failed to delete " + path); 590 } 591 destroy_app_current_profiles(pkgname, userId); 592 // TODO(calin): If the package is still installed by other users it's probably 593 // beneficial to keep the reference profile around. 594 // Verify if it's ok to do that. 595 destroy_app_reference_profile(pkgname); 596 } 597 return res; 598} 599 600binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 601 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 602 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 603 int32_t targetSdkVersion) { 604 ENFORCE_UID(AID_SYSTEM); 605 CHECK_ARGUMENT_UUID(fromUuid); 606 CHECK_ARGUMENT_UUID(toUuid); 607 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 608 std::lock_guard<std::recursive_mutex> lock(mLock); 609 610 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 611 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 612 const char* package_name = packageName.c_str(); 613 const char* data_app_name = dataAppName.c_str(); 614 615 binder::Status res = ok(); 616 std::vector<userid_t> users = get_known_users(from_uuid); 617 618 // Copy app 619 { 620 auto from = create_data_app_package_path(from_uuid, data_app_name); 621 auto to = create_data_app_package_path(to_uuid, data_app_name); 622 auto to_parent = create_data_app_path(to_uuid); 623 624 char *argv[] = { 625 (char*) kCpPath, 626 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 627 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 628 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 629 (char*) "-P", /* Do not follow symlinks [default] */ 630 (char*) "-d", /* don't dereference symlinks */ 631 (char*) from.c_str(), 632 (char*) to_parent.c_str() 633 }; 634 635 LOG(DEBUG) << "Copying " << from << " to " << to; 636 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 637 if (rc != 0) { 638 res = error(rc, "Failed copying " + from + " to " + to); 639 goto fail; 640 } 641 642 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 643 res = error("Failed to restorecon " + to); 644 goto fail; 645 } 646 } 647 648 // Copy private data for all known users 649 for (auto user : users) { 650 651 // Data source may not exist for all users; that's okay 652 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 653 if (access(from_ce.c_str(), F_OK) != 0) { 654 LOG(INFO) << "Missing source " << from_ce; 655 continue; 656 } 657 658 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 659 seInfo, targetSdkVersion, nullptr).isOk()) { 660 res = error("Failed to create package target"); 661 goto fail; 662 } 663 664 char *argv[] = { 665 (char*) kCpPath, 666 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 667 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 668 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 669 (char*) "-P", /* Do not follow symlinks [default] */ 670 (char*) "-d", /* don't dereference symlinks */ 671 nullptr, 672 nullptr 673 }; 674 675 { 676 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 677 auto to = create_data_user_de_path(to_uuid, user); 678 argv[6] = (char*) from.c_str(); 679 argv[7] = (char*) to.c_str(); 680 681 LOG(DEBUG) << "Copying " << from << " to " << to; 682 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 683 if (rc != 0) { 684 res = error(rc, "Failed copying " + from + " to " + to); 685 goto fail; 686 } 687 } 688 { 689 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 690 auto to = create_data_user_ce_path(to_uuid, user); 691 argv[6] = (char*) from.c_str(); 692 argv[7] = (char*) to.c_str(); 693 694 LOG(DEBUG) << "Copying " << from << " to " << to; 695 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 696 if (rc != 0) { 697 res = error(rc, "Failed copying " + from + " to " + to); 698 goto fail; 699 } 700 } 701 702 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 703 appId, seInfo).isOk()) { 704 res = error("Failed to restorecon"); 705 goto fail; 706 } 707 } 708 709 // We let the framework scan the new location and persist that before 710 // deleting the data in the old location; this ordering ensures that 711 // we can recover from things like battery pulls. 712 return ok(); 713 714fail: 715 // Nuke everything we might have already copied 716 { 717 auto to = create_data_app_package_path(to_uuid, data_app_name); 718 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 719 LOG(WARNING) << "Failed to rollback " << to; 720 } 721 } 722 for (auto user : users) { 723 { 724 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 725 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 726 LOG(WARNING) << "Failed to rollback " << to; 727 } 728 } 729 { 730 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 731 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 732 LOG(WARNING) << "Failed to rollback " << to; 733 } 734 } 735 } 736 return res; 737} 738 739binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 740 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 741 ENFORCE_UID(AID_SYSTEM); 742 CHECK_ARGUMENT_UUID(uuid); 743 std::lock_guard<std::recursive_mutex> lock(mLock); 744 745 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 746 if (flags & FLAG_STORAGE_DE) { 747 if (uuid_ == nullptr) { 748 if (ensure_config_user_dirs(userId) != 0) { 749 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 750 } 751 } 752 } 753 return ok(); 754} 755 756binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 757 int32_t userId, int32_t flags) { 758 ENFORCE_UID(AID_SYSTEM); 759 CHECK_ARGUMENT_UUID(uuid); 760 std::lock_guard<std::recursive_mutex> lock(mLock); 761 762 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 763 binder::Status res = ok(); 764 if (flags & FLAG_STORAGE_DE) { 765 auto path = create_data_user_de_path(uuid_, userId); 766 if (delete_dir_contents_and_dir(path, true) != 0) { 767 res = error("Failed to delete " + path); 768 } 769 if (uuid_ == nullptr) { 770 path = create_data_misc_legacy_path(userId); 771 if (delete_dir_contents_and_dir(path, true) != 0) { 772 res = error("Failed to delete " + path); 773 } 774 path = create_data_user_profile_path(userId); 775 if (delete_dir_contents_and_dir(path, true) != 0) { 776 res = error("Failed to delete " + path); 777 } 778 } 779 } 780 if (flags & FLAG_STORAGE_CE) { 781 auto path = create_data_user_ce_path(uuid_, userId); 782 if (delete_dir_contents_and_dir(path, true) != 0) { 783 res = error("Failed to delete " + path); 784 } 785 path = create_data_media_path(uuid_, userId); 786 if (delete_dir_contents_and_dir(path, true) != 0) { 787 res = error("Failed to delete " + path); 788 } 789 } 790 return res; 791} 792 793/* Try to ensure free_size bytes of storage are available. 794 * Returns 0 on success. 795 * This is rather simple-minded because doing a full LRU would 796 * be potentially memory-intensive, and without atime it would 797 * also require that apps constantly modify file metadata even 798 * when just reading from the cache, which is pretty awful. 799 */ 800binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 801 int64_t freeStorageSize) { 802 ENFORCE_UID(AID_SYSTEM); 803 CHECK_ARGUMENT_UUID(uuid); 804 std::lock_guard<std::recursive_mutex> lock(mLock); 805 806 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 807 cache_t* cache; 808 int64_t avail; 809 810 auto data_path = create_data_path(uuid_); 811 812 avail = data_disk_free(data_path); 813 if (avail < 0) { 814 return error("Failed to determine free space for " + data_path); 815 } 816 817 ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail); 818 if (avail >= freeStorageSize) { 819 return ok(); 820 } 821 822 cache = start_cache_collection(); 823 824 auto users = get_known_users(uuid_); 825 for (auto user : users) { 826 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 827 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 828 add_cache_files(cache, 829 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 830 } 831 832 clear_cache_files(data_path, cache, freeStorageSize); 833 finish_cache_collection(cache); 834 835 avail = data_disk_free(data_path); 836 if (avail >= freeStorageSize) { 837 return ok(); 838 } else { 839 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 840 freeStorageSize, data_path.c_str(), avail)); 841 } 842} 843 844binder::Status InstalldNativeService::rmdex(const std::string& codePath, 845 const std::string& instructionSet) { 846 ENFORCE_UID(AID_SYSTEM); 847 std::lock_guard<std::recursive_mutex> lock(mLock); 848 849 char dex_path[PKG_PATH_MAX]; 850 851 const char* path = codePath.c_str(); 852 const char* instruction_set = instructionSet.c_str(); 853 854 if (validate_apk_path(path) && validate_system_app_path(path)) { 855 return error("Invalid path " + codePath); 856 } 857 858 if (!create_cache_path(dex_path, path, instruction_set)) { 859 return error("Failed to create cache path for " + codePath); 860 } 861 862 ALOGV("unlink %s\n", dex_path); 863 if (unlink(dex_path) < 0) { 864 return error(StringPrintf("Failed to unlink %s", dex_path)); 865 } else { 866 return ok(); 867 } 868} 869 870struct stats { 871 int64_t codeSize; 872 int64_t dataSize; 873 int64_t cacheSize; 874}; 875 876#if MEASURE_DEBUG 877static std::string toString(std::vector<int64_t> values) { 878 std::stringstream res; 879 res << "["; 880 for (size_t i = 0; i < values.size(); i++) { 881 res << values[i]; 882 if (i < values.size() - 1) { 883 res << ","; 884 } 885 } 886 res << "]"; 887 return res.str(); 888} 889#endif 890 891static std::string findDeviceForUuid(const std::unique_ptr<std::string>& uuid) { 892 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 893 std::ifstream in("/proc/mounts"); 894 if (!in.is_open()) { 895 PLOG(ERROR) << "Failed to read mounts"; 896 return ""; 897 } 898 std::string source; 899 std::string target; 900 while (!in.eof()) { 901 std::getline(in, source, ' '); 902 std::getline(in, target, ' '); 903 if (target == path) { 904 return source; 905 } 906 // Skip to next line 907 std::getline(in, source); 908 } 909 PLOG(ERROR) << "Failed to resolve block device for " << path; 910 return ""; 911} 912 913static void collectQuotaStats(const std::string& device, int32_t userId, 914 int32_t appId, struct stats* stats, struct stats* extStats ATTRIBUTE_UNUSED) { 915 if (device.empty()) return; 916 917 struct dqblk dq; 918 919 uid_t uid = multiuser_get_uid(userId, appId); 920 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 921 reinterpret_cast<char*>(&dq)) != 0) { 922 if (errno != ESRCH) { 923 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 924 } 925 } else { 926#if MEASURE_DEBUG 927 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 928#endif 929 stats->dataSize += dq.dqb_curspace; 930 } 931 932 int cacheGid = multiuser_get_cache_gid(userId, appId); 933 if (cacheGid != -1) { 934 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 935 reinterpret_cast<char*>(&dq)) != 0) { 936 if (errno != ESRCH) { 937 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 938 } 939 } else { 940#if MEASURE_DEBUG 941 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 942#endif 943 stats->cacheSize += dq.dqb_curspace; 944 } 945 } 946 947 int sharedGid = multiuser_get_shared_app_gid(uid); 948 if (sharedGid != -1) { 949 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 950 reinterpret_cast<char*>(&dq)) != 0) { 951 if (errno != ESRCH) { 952 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 953 } 954 } else { 955#if MEASURE_DEBUG 956 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 957#endif 958 stats->codeSize += dq.dqb_curspace; 959 } 960 } 961 962#if MEASURE_EXTERNAL 963 // TODO: measure using external GIDs 964#endif 965} 966 967static void collectQuotaStats(const std::unique_ptr<std::string>& uuid, int32_t userId, 968 int32_t appId, struct stats* stats, struct stats* extStats) { 969 collectQuotaStats(findDeviceForUuid(uuid), userId, appId, stats, extStats); 970} 971 972static void collectManualStats(const std::string& path, struct stats* stats) { 973 DIR *d; 974 int dfd; 975 struct dirent *de; 976 struct stat s; 977 978 d = opendir(path.c_str()); 979 if (d == nullptr) { 980 if (errno != ENOENT) { 981 PLOG(WARNING) << "Failed to open " << path; 982 } 983 return; 984 } 985 dfd = dirfd(d); 986 while ((de = readdir(d))) { 987 const char *name = de->d_name; 988 989 int64_t size = 0; 990 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 991 size = s.st_blocks * 512; 992 } 993 994 if (de->d_type == DT_DIR) { 995 if (!strcmp(name, ".")) { 996 // Don't recurse, but still count node size 997 } else if (!strcmp(name, "..")) { 998 // Don't recurse or count node size 999 continue; 1000 } else { 1001 // Measure all children nodes 1002 size = 0; 1003 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1004 } 1005 1006 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1007 stats->cacheSize += size; 1008 } 1009 } 1010 1011 // Legacy symlink isn't owned by app 1012 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1013 continue; 1014 } 1015 1016 // Everything found inside is considered data 1017 stats->dataSize += size; 1018 } 1019 closedir(d); 1020} 1021 1022static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1023 bool exclude_apps = false) { 1024 DIR *d; 1025 int dfd; 1026 struct dirent *de; 1027 struct stat s; 1028 1029 d = opendir(path.c_str()); 1030 if (d == nullptr) { 1031 if (errno != ENOENT) { 1032 PLOG(WARNING) << "Failed to open " << path; 1033 } 1034 return; 1035 } 1036 dfd = dirfd(d); 1037 while ((de = readdir(d))) { 1038 if (de->d_type == DT_DIR) { 1039 const char *name = de->d_name; 1040 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1041 continue; 1042 } 1043 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1044 continue; 1045 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1046 continue; 1047 } else { 1048 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1049 } 1050 } 1051 } 1052 closedir(d); 1053} 1054 1055binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1056 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1057 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1058 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1059 ENFORCE_UID(AID_SYSTEM); 1060 CHECK_ARGUMENT_UUID(uuid); 1061 for (auto packageName : packageNames) { 1062 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1063 } 1064 std::lock_guard<std::recursive_mutex> lock(mLock); 1065 1066 // When modifying this logic, always verify using tests: 1067 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1068 1069#if MEASURE_DEBUG 1070 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1071#endif 1072 1073 // Here's a summary of the common storage locations across the platform, 1074 // and how they're each tagged: 1075 // 1076 // /data/app/com.example UID system 1077 // /data/app/com.example/oat UID system 1078 // /data/user/0/com.example UID u0_a10 GID u0_a10 1079 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1080 // /data/media/0/foo.txt UID u0_media_rw 1081 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1082 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1083 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1084 // /data/media/obb/com.example UID system 1085 1086 struct stats stats; 1087 struct stats extStats; 1088 memset(&stats, 0, sizeof(stats)); 1089 memset(&extStats, 0, sizeof(extStats)); 1090 1091 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1092 1093 for (auto packageName : packageNames) { 1094 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1095 calculate_tree_size(obbCodePath, &extStats.codeSize); 1096 } 1097 1098 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1099 for (auto codePath : codePaths) { 1100 calculate_tree_size(codePath, &stats.codeSize, -1, 1101 multiuser_get_shared_gid(userId, appId)); 1102 } 1103 1104 collectQuotaStats(uuid, userId, appId, &stats, &extStats); 1105 1106 } else { 1107 for (auto codePath : codePaths) { 1108 calculate_tree_size(codePath, &stats.codeSize); 1109 } 1110 1111 for (size_t i = 0; i < packageNames.size(); i++) { 1112 const char* pkgname = packageNames[i].c_str(); 1113 1114 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1115 collectManualStats(cePath, &stats); 1116 1117 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1118 collectManualStats(dePath, &stats); 1119 1120 auto userProfilePath = create_data_user_profile_package_path(userId, pkgname); 1121 calculate_tree_size(userProfilePath, &stats.dataSize); 1122 1123 auto refProfilePath = create_data_ref_profile_package_path(pkgname); 1124 calculate_tree_size(refProfilePath, &stats.codeSize); 1125 1126#if MEASURE_EXTERNAL 1127 auto extPath = create_data_media_package_path(uuid_, userId, pkgname, "data"); 1128 collectManualStats(extPath, &extStats); 1129 1130 auto mediaPath = create_data_media_package_path(uuid_, userId, pkgname, "media"); 1131 calculate_tree_size(mediaPath, &extStats.dataSize); 1132#endif 1133 } 1134 1135 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1136 if (sharedGid != -1) { 1137 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1138 sharedGid, -1); 1139 } 1140 1141 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1142 multiuser_get_uid(userId, appId), -1); 1143 } 1144 1145 std::vector<int64_t> ret; 1146 ret.push_back(stats.codeSize); 1147 ret.push_back(stats.dataSize); 1148 ret.push_back(stats.cacheSize); 1149 ret.push_back(extStats.codeSize); 1150 ret.push_back(extStats.dataSize); 1151 ret.push_back(extStats.cacheSize); 1152#if MEASURE_DEBUG 1153 LOG(DEBUG) << "Final result " << toString(ret); 1154#endif 1155 *_aidl_return = ret; 1156 return ok(); 1157} 1158 1159binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1160 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1161 std::vector<int64_t>* _aidl_return) { 1162 ENFORCE_UID(AID_SYSTEM); 1163 CHECK_ARGUMENT_UUID(uuid); 1164 std::lock_guard<std::recursive_mutex> lock(mLock); 1165 1166 // When modifying this logic, always verify using tests: 1167 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1168 1169#if MEASURE_DEBUG 1170 LOG(INFO) << "Measuring user " << userId; 1171#endif 1172 1173 struct stats stats; 1174 struct stats extStats; 1175 memset(&stats, 0, sizeof(stats)); 1176 memset(&extStats, 0, sizeof(extStats)); 1177 1178 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1179 1180 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1181 calculate_tree_size(obbPath, &extStats.codeSize); 1182 1183 if (flags & FLAG_USE_QUOTA) { 1184 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1185 1186 auto cePath = create_data_user_ce_path(uuid_, userId); 1187 collectManualStatsForUser(cePath, &stats, true); 1188 1189 auto dePath = create_data_user_de_path(uuid_, userId); 1190 collectManualStatsForUser(dePath, &stats, true); 1191 1192 auto userProfilePath = create_data_user_profile_path(userId); 1193 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1194 1195 auto refProfilePath = create_data_ref_profile_path(); 1196 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1197 1198#if MEASURE_EXTERNAL 1199 // TODO: measure external storage paths 1200#endif 1201 1202 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1203 -1, -1, true); 1204 1205 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1206 -1, -1, true); 1207 1208 auto device = findDeviceForUuid(uuid); 1209 for (auto appId : appIds) { 1210 if (appId >= AID_APP_START) { 1211 collectQuotaStats(device, userId, appId, &stats, &extStats); 1212#if MEASURE_DEBUG 1213 // Sleep to make sure we don't lose logs 1214 usleep(1); 1215#endif 1216 } 1217 } 1218 } else { 1219 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1220 1221 auto cePath = create_data_user_ce_path(uuid_, userId); 1222 collectManualStatsForUser(cePath, &stats); 1223 1224 auto dePath = create_data_user_de_path(uuid_, userId); 1225 collectManualStatsForUser(dePath, &stats); 1226 1227 auto userProfilePath = create_data_user_profile_path(userId); 1228 calculate_tree_size(userProfilePath, &stats.dataSize); 1229 1230 auto refProfilePath = create_data_ref_profile_path(); 1231 calculate_tree_size(refProfilePath, &stats.codeSize); 1232 1233#if MEASURE_EXTERNAL 1234 // TODO: measure external storage paths 1235#endif 1236 1237 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1238 1239 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize); 1240 } 1241 1242 std::vector<int64_t> ret; 1243 ret.push_back(stats.codeSize); 1244 ret.push_back(stats.dataSize); 1245 ret.push_back(stats.cacheSize); 1246 ret.push_back(extStats.codeSize); 1247 ret.push_back(extStats.dataSize); 1248 ret.push_back(extStats.cacheSize); 1249#if MEASURE_DEBUG 1250 LOG(DEBUG) << "Final result " << toString(ret); 1251#endif 1252 *_aidl_return = ret; 1253 return ok(); 1254} 1255 1256binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1257 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1258 ENFORCE_UID(AID_SYSTEM); 1259 CHECK_ARGUMENT_UUID(uuid); 1260 std::lock_guard<std::recursive_mutex> lock(mLock); 1261 1262 // When modifying this logic, always verify using tests: 1263 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1264 1265#if MEASURE_DEBUG 1266 LOG(INFO) << "Measuring external " << userId; 1267#endif 1268 1269 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1270 1271 int64_t totalSize = 0; 1272 int64_t audioSize = 0; 1273 int64_t videoSize = 0; 1274 int64_t imageSize = 0; 1275 1276 if (flags & FLAG_USE_QUOTA) { 1277 struct dqblk dq; 1278 1279 auto device = findDeviceForUuid(uuid); 1280 1281 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1282 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1283 reinterpret_cast<char*>(&dq)) != 0) { 1284 if (errno != ESRCH) { 1285 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1286 } 1287 } else { 1288#if MEASURE_DEBUG 1289 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1290#endif 1291 totalSize = dq.dqb_curspace; 1292 } 1293 1294 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1295 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1296 reinterpret_cast<char*>(&dq)) == 0) { 1297#if MEASURE_DEBUG 1298 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1299#endif 1300 audioSize = dq.dqb_curspace; 1301 } 1302 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1303 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1304 reinterpret_cast<char*>(&dq)) == 0) { 1305#if MEASURE_DEBUG 1306 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1307#endif 1308 videoSize = dq.dqb_curspace; 1309 } 1310 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1311 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1312 reinterpret_cast<char*>(&dq)) == 0) { 1313#if MEASURE_DEBUG 1314 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1315#endif 1316 imageSize = dq.dqb_curspace; 1317 } 1318 } else { 1319 FTS *fts; 1320 FTSENT *p; 1321 auto path = create_data_media_path(uuid_, userId); 1322 char *argv[] = { (char*) path.c_str(), nullptr }; 1323 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1324 return error("Failed to fts_open " + path); 1325 } 1326 while ((p = fts_read(fts)) != NULL) { 1327 char* ext; 1328 int64_t size = (p->fts_statp->st_blocks * 512); 1329 switch (p->fts_info) { 1330 case FTS_F: 1331 // Only categorize files not belonging to apps 1332 if (p->fts_statp->st_gid < AID_APP_START) { 1333 ext = strrchr(p->fts_name, '.'); 1334 if (ext != nullptr) { 1335 switch (MatchExtension(++ext)) { 1336 case AID_MEDIA_AUDIO: audioSize += size; break; 1337 case AID_MEDIA_VIDEO: videoSize += size; break; 1338 case AID_MEDIA_IMAGE: imageSize += size; break; 1339 } 1340 } 1341 } 1342 // Fall through to always count against total 1343 case FTS_D: 1344 case FTS_DEFAULT: 1345 case FTS_SL: 1346 case FTS_SLNONE: 1347 totalSize += size; 1348 break; 1349 } 1350 } 1351 fts_close(fts); 1352 } 1353 1354 std::vector<int64_t> ret; 1355 ret.push_back(totalSize); 1356 ret.push_back(audioSize); 1357 ret.push_back(videoSize); 1358 ret.push_back(imageSize); 1359#if MEASURE_DEBUG 1360 LOG(DEBUG) << "Final result " << toString(ret); 1361#endif 1362 *_aidl_return = ret; 1363 return ok(); 1364} 1365 1366// Dumps the contents of a profile file, using pkgname's dex files for pretty 1367// printing the result. 1368binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1369 const std::string& codePaths, bool* _aidl_return) { 1370 ENFORCE_UID(AID_SYSTEM); 1371 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1372 std::lock_guard<std::recursive_mutex> lock(mLock); 1373 1374 const char* pkgname = packageName.c_str(); 1375 const char* code_paths = codePaths.c_str(); 1376 1377 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1378 return ok(); 1379} 1380 1381// TODO: Consider returning error codes. 1382binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1383 bool* _aidl_return) { 1384 ENFORCE_UID(AID_SYSTEM); 1385 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1386 std::lock_guard<std::recursive_mutex> lock(mLock); 1387 1388 const char* pkgname = packageName.c_str(); 1389 *_aidl_return = analyse_profiles(uid, pkgname); 1390 return ok(); 1391} 1392 1393binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1394 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1395 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1396 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1397 const std::unique_ptr<std::string>& sharedLibraries) { 1398 ENFORCE_UID(AID_SYSTEM); 1399 CHECK_ARGUMENT_UUID(uuid); 1400 if (packageName && *packageName != "*") { 1401 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1402 } 1403 std::lock_guard<std::recursive_mutex> lock(mLock); 1404 1405 const char* apk_path = apkPath.c_str(); 1406 const char* pkgname = packageName ? packageName->c_str() : "*"; 1407 const char* instruction_set = instructionSet.c_str(); 1408 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1409 const char* compiler_filter = compilerFilter.c_str(); 1410 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1411 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1412 1413 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1414 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 1415 return res ? error(res, "Failed to dexopt") : ok(); 1416} 1417 1418binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1419 ENFORCE_UID(AID_SYSTEM); 1420 std::lock_guard<std::recursive_mutex> lock(mLock); 1421 1422 const char* instruction_set = instructionSet.c_str(); 1423 1424 char boot_marker_path[PKG_PATH_MAX]; 1425 sprintf(boot_marker_path, 1426 "%s/%s/%s/.booting", 1427 android_data_dir.path, 1428 DALVIK_CACHE, 1429 instruction_set); 1430 1431 ALOGV("mark_boot_complete : %s", boot_marker_path); 1432 if (unlink(boot_marker_path) != 0) { 1433 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1434 } 1435 return ok(); 1436} 1437 1438void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1439 struct stat* statbuf) 1440{ 1441 while (path[basepos] != 0) { 1442 if (path[basepos] == '/') { 1443 path[basepos] = 0; 1444 if (lstat(path, statbuf) < 0) { 1445 ALOGV("Making directory: %s\n", path); 1446 if (mkdir(path, mode) == 0) { 1447 chown(path, uid, gid); 1448 } else { 1449 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1450 } 1451 } 1452 path[basepos] = '/'; 1453 basepos++; 1454 } 1455 basepos++; 1456 } 1457} 1458 1459binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1460 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1461 const std::string& nativeLibPath32, int32_t userId) { 1462 ENFORCE_UID(AID_SYSTEM); 1463 CHECK_ARGUMENT_UUID(uuid); 1464 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1465 std::lock_guard<std::recursive_mutex> lock(mLock); 1466 1467 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1468 const char* pkgname = packageName.c_str(); 1469 const char* asecLibDir = nativeLibPath32.c_str(); 1470 struct stat s, libStat; 1471 binder::Status res = ok(); 1472 1473 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1474 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1475 1476 const char* pkgdir = _pkgdir.c_str(); 1477 const char* libsymlink = _libsymlink.c_str(); 1478 1479 if (stat(pkgdir, &s) < 0) { 1480 return error("Failed to stat " + _pkgdir); 1481 } 1482 1483 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1484 return error("Failed to chown " + _pkgdir); 1485 } 1486 1487 if (chmod(pkgdir, 0700) < 0) { 1488 res = error("Failed to chmod " + _pkgdir); 1489 goto out; 1490 } 1491 1492 if (lstat(libsymlink, &libStat) < 0) { 1493 if (errno != ENOENT) { 1494 res = error("Failed to stat " + _libsymlink); 1495 goto out; 1496 } 1497 } else { 1498 if (S_ISDIR(libStat.st_mode)) { 1499 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1500 res = error("Failed to delete " + _libsymlink); 1501 goto out; 1502 } 1503 } else if (S_ISLNK(libStat.st_mode)) { 1504 if (unlink(libsymlink) < 0) { 1505 res = error("Failed to unlink " + _libsymlink); 1506 goto out; 1507 } 1508 } 1509 } 1510 1511 if (symlink(asecLibDir, libsymlink) < 0) { 1512 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1513 goto out; 1514 } 1515 1516out: 1517 if (chmod(pkgdir, s.st_mode) < 0) { 1518 auto msg = "Failed to cleanup chmod " + _pkgdir; 1519 if (res.isOk()) { 1520 res = error(msg); 1521 } else { 1522 PLOG(ERROR) << msg; 1523 } 1524 } 1525 1526 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1527 auto msg = "Failed to cleanup chown " + _pkgdir; 1528 if (res.isOk()) { 1529 res = error(msg); 1530 } else { 1531 PLOG(ERROR) << msg; 1532 } 1533 } 1534 1535 return res; 1536} 1537 1538static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1539{ 1540 static const char *IDMAP_BIN = "/system/bin/idmap"; 1541 static const size_t MAX_INT_LEN = 32; 1542 char idmap_str[MAX_INT_LEN]; 1543 1544 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1545 1546 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1547 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1548} 1549 1550// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1551// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1552static int flatten_path(const char *prefix, const char *suffix, 1553 const char *overlay_path, char *idmap_path, size_t N) 1554{ 1555 if (overlay_path == NULL || idmap_path == NULL) { 1556 return -1; 1557 } 1558 const size_t len_overlay_path = strlen(overlay_path); 1559 // will access overlay_path + 1 further below; requires absolute path 1560 if (len_overlay_path < 2 || *overlay_path != '/') { 1561 return -1; 1562 } 1563 const size_t len_idmap_root = strlen(prefix); 1564 const size_t len_suffix = strlen(suffix); 1565 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1566 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1567 // additions below would cause overflow 1568 return -1; 1569 } 1570 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1571 return -1; 1572 } 1573 memset(idmap_path, 0, N); 1574 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1575 char *ch = idmap_path + len_idmap_root; 1576 while (*ch != '\0') { 1577 if (*ch == '/') { 1578 *ch = '@'; 1579 } 1580 ++ch; 1581 } 1582 return 0; 1583} 1584 1585binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1586 const std::string& overlayApkPath, int32_t uid) { 1587 ENFORCE_UID(AID_SYSTEM); 1588 std::lock_guard<std::recursive_mutex> lock(mLock); 1589 1590 const char* target_apk = targetApkPath.c_str(); 1591 const char* overlay_apk = overlayApkPath.c_str(); 1592 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1593 1594 int idmap_fd = -1; 1595 char idmap_path[PATH_MAX]; 1596 1597 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1598 idmap_path, sizeof(idmap_path)) == -1) { 1599 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1600 goto fail; 1601 } 1602 1603 unlink(idmap_path); 1604 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1605 if (idmap_fd < 0) { 1606 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1607 goto fail; 1608 } 1609 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1610 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1611 goto fail; 1612 } 1613 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1614 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1615 goto fail; 1616 } 1617 1618 pid_t pid; 1619 pid = fork(); 1620 if (pid == 0) { 1621 /* child -- drop privileges before continuing */ 1622 if (setgid(uid) != 0) { 1623 ALOGE("setgid(%d) failed during idmap\n", uid); 1624 exit(1); 1625 } 1626 if (setuid(uid) != 0) { 1627 ALOGE("setuid(%d) failed during idmap\n", uid); 1628 exit(1); 1629 } 1630 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1631 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1632 exit(1); 1633 } 1634 1635 run_idmap(target_apk, overlay_apk, idmap_fd); 1636 exit(1); /* only if exec call to idmap failed */ 1637 } else { 1638 int status = wait_child(pid); 1639 if (status != 0) { 1640 ALOGE("idmap failed, status=0x%04x\n", status); 1641 goto fail; 1642 } 1643 } 1644 1645 close(idmap_fd); 1646 return ok(); 1647fail: 1648 if (idmap_fd >= 0) { 1649 close(idmap_fd); 1650 unlink(idmap_path); 1651 } 1652 return error(); 1653} 1654 1655binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1656 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1657 const std::string& seInfo) { 1658 ENFORCE_UID(AID_SYSTEM); 1659 CHECK_ARGUMENT_UUID(uuid); 1660 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1661 std::lock_guard<std::recursive_mutex> lock(mLock); 1662 1663 binder::Status res = ok(); 1664 1665 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1666 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1667 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1668 const char* pkgName = packageName.c_str(); 1669 const char* seinfo = seInfo.c_str(); 1670 1671 uid_t uid = multiuser_get_uid(userId, appId); 1672 if (flags & FLAG_STORAGE_CE) { 1673 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1674 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1675 res = error("restorecon failed for " + path); 1676 } 1677 } 1678 if (flags & FLAG_STORAGE_DE) { 1679 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1680 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1681 res = error("restorecon failed for " + path); 1682 } 1683 } 1684 return res; 1685} 1686 1687binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1688 const std::string& instructionSet) { 1689 ENFORCE_UID(AID_SYSTEM); 1690 std::lock_guard<std::recursive_mutex> lock(mLock); 1691 1692 const char* oat_dir = oatDir.c_str(); 1693 const char* instruction_set = instructionSet.c_str(); 1694 char oat_instr_dir[PKG_PATH_MAX]; 1695 1696 if (validate_apk_path(oat_dir)) { 1697 return error("Invalid path " + oatDir); 1698 } 1699 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1700 return error("Failed to prepare " + oatDir); 1701 } 1702 if (selinux_android_restorecon(oat_dir, 0)) { 1703 return error("Failed to restorecon " + oatDir); 1704 } 1705 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1706 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1707 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1708 } 1709 return ok(); 1710} 1711 1712binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1713 ENFORCE_UID(AID_SYSTEM); 1714 std::lock_guard<std::recursive_mutex> lock(mLock); 1715 1716 if (validate_apk_path(packageDir.c_str())) { 1717 return error("Invalid path " + packageDir); 1718 } 1719 if (delete_dir_contents_and_dir(packageDir) != 0) { 1720 return error("Failed to delete " + packageDir); 1721 } 1722 return ok(); 1723} 1724 1725binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1726 const std::string& fromBase, const std::string& toBase) { 1727 ENFORCE_UID(AID_SYSTEM); 1728 std::lock_guard<std::recursive_mutex> lock(mLock); 1729 1730 const char* relative_path = relativePath.c_str(); 1731 const char* from_base = fromBase.c_str(); 1732 const char* to_base = toBase.c_str(); 1733 char from_path[PKG_PATH_MAX]; 1734 char to_path[PKG_PATH_MAX]; 1735 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1736 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1737 1738 if (validate_apk_path_subdirs(from_path)) { 1739 return error(StringPrintf("Invalid from path %s", from_path)); 1740 } 1741 1742 if (validate_apk_path_subdirs(to_path)) { 1743 return error(StringPrintf("Invalid to path %s", to_path)); 1744 } 1745 1746 if (link(from_path, to_path) < 0) { 1747 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1748 } 1749 1750 return ok(); 1751} 1752 1753binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1754 const std::string& instructionSet, const std::string& outputPath) { 1755 ENFORCE_UID(AID_SYSTEM); 1756 std::lock_guard<std::recursive_mutex> lock(mLock); 1757 1758 const char* apk_path = apkPath.c_str(); 1759 const char* instruction_set = instructionSet.c_str(); 1760 const char* oat_dir = outputPath.c_str(); 1761 1762 bool success = move_ab(apk_path, instruction_set, oat_dir); 1763 return success ? ok() : error(); 1764} 1765 1766binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1767 const std::string& instructionSet, const std::string& outputPath) { 1768 ENFORCE_UID(AID_SYSTEM); 1769 std::lock_guard<std::recursive_mutex> lock(mLock); 1770 1771 const char* apk_path = apkPath.c_str(); 1772 const char* instruction_set = instructionSet.c_str(); 1773 const char* oat_dir = outputPath.c_str(); 1774 1775 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1776 return res ? ok() : error(); 1777} 1778 1779} // namespace installd 1780} // namespace android 1781