InstalldNativeService.cpp revision d972d4206db6e42cc574586a1af2f94264a04519
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 int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 71 72static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 73static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 74static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 75 76static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 77static constexpr const char* IDMAP_SUFFIX = "@idmap"; 78 79// NOTE: keep in sync with StorageManager 80static constexpr int FLAG_STORAGE_DE = 1 << 0; 81static constexpr int FLAG_STORAGE_CE = 1 << 1; 82 83// NOTE: keep in sync with Installer 84static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 85static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 86static constexpr int FLAG_USE_QUOTA = 1 << 12; 87 88namespace { 89 90constexpr const char* kDump = "android.permission.DUMP"; 91 92static binder::Status ok() { 93 return binder::Status::ok(); 94} 95 96static binder::Status exception(uint32_t code, const std::string& msg) { 97 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 98} 99 100static binder::Status error() { 101 return binder::Status::fromServiceSpecificError(errno); 102} 103 104static binder::Status error(const std::string& msg) { 105 PLOG(ERROR) << msg; 106 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 107} 108 109static binder::Status error(uint32_t code, const std::string& msg) { 110 LOG(ERROR) << msg << " (" << code << ")"; 111 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 112} 113 114binder::Status checkPermission(const char* permission) { 115 pid_t pid; 116 uid_t uid; 117 118 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 119 reinterpret_cast<int32_t*>(&uid))) { 120 return ok(); 121 } else { 122 return exception(binder::Status::EX_SECURITY, 123 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 124 } 125} 126 127binder::Status checkUid(uid_t expectedUid) { 128 uid_t uid = IPCThreadState::self()->getCallingUid(); 129 if (uid == expectedUid || uid == AID_ROOT) { 130 return ok(); 131 } else { 132 return exception(binder::Status::EX_SECURITY, 133 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 134 } 135} 136 137binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 138 if (!uuid || is_valid_filename(*uuid)) { 139 return ok(); 140 } else { 141 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 142 StringPrintf("UUID %s is malformed", uuid->c_str())); 143 } 144} 145 146binder::Status checkArgumentPackageName(const std::string& packageName) { 147 if (is_valid_package_name(packageName.c_str())) { 148 return ok(); 149 } else { 150 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 151 StringPrintf("Package name %s is malformed", packageName.c_str())); 152 } 153} 154 155#define ENFORCE_UID(uid) { \ 156 binder::Status status = checkUid((uid)); \ 157 if (!status.isOk()) { \ 158 return status; \ 159 } \ 160} 161 162#define CHECK_ARGUMENT_UUID(uuid) { \ 163 binder::Status status = checkArgumentUuid((uuid)); \ 164 if (!status.isOk()) { \ 165 return status; \ 166 } \ 167} 168 169#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 170 binder::Status status = \ 171 checkArgumentPackageName((packageName)); \ 172 if (!status.isOk()) { \ 173 return status; \ 174 } \ 175} 176 177} // namespace 178 179status_t InstalldNativeService::start() { 180 IPCThreadState::self()->disableBackgroundScheduling(true); 181 status_t ret = BinderService<InstalldNativeService>::publish(); 182 if (ret != android::OK) { 183 return ret; 184 } 185 sp<ProcessState> ps(ProcessState::self()); 186 ps->startThreadPool(); 187 ps->giveThreadPoolName(); 188 return android::OK; 189} 190 191status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 192 const binder::Status dump_permission = checkPermission(kDump); 193 if (!dump_permission.isOk()) { 194 const String8 msg(dump_permission.toString8()); 195 write(fd, msg.string(), msg.size()); 196 return PERMISSION_DENIED; 197 } 198 199 std::string msg = "installd is happy\n"; 200 write(fd, msg.c_str(), strlen(msg.c_str())); 201 return NO_ERROR; 202} 203 204/** 205 * Perform restorecon of the given path, but only perform recursive restorecon 206 * if the label of that top-level file actually changed. This can save us 207 * significant time by avoiding no-op traversals of large filesystem trees. 208 */ 209static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 210 bool existing) { 211 int res = 0; 212 char* before = nullptr; 213 char* after = nullptr; 214 215 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 216 // libselinux. Not needed here. 217 218 if (lgetfilecon(path.c_str(), &before) < 0) { 219 PLOG(ERROR) << "Failed before getfilecon for " << path; 220 goto fail; 221 } 222 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 223 PLOG(ERROR) << "Failed top-level restorecon for " << path; 224 goto fail; 225 } 226 if (lgetfilecon(path.c_str(), &after) < 0) { 227 PLOG(ERROR) << "Failed after getfilecon for " << path; 228 goto fail; 229 } 230 231 // If the initial top-level restorecon above changed the label, then go 232 // back and restorecon everything recursively 233 if (strcmp(before, after)) { 234 if (existing) { 235 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 236 << path << "; running recursive restorecon"; 237 } 238 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 239 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 240 PLOG(ERROR) << "Failed recursive restorecon for " << path; 241 goto fail; 242 } 243 } 244 245 goto done; 246fail: 247 res = -1; 248done: 249 free(before); 250 free(after); 251 return res; 252} 253 254static int restorecon_app_data_lazy(const std::string& parent, const char* name, 255 const std::string& seInfo, uid_t uid, bool existing) { 256 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 257 existing); 258} 259 260static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 261 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 262 PLOG(ERROR) << "Failed to prepare " << path; 263 return -1; 264 } 265 return 0; 266} 267 268/** 269 * Prepare an app cache directory, which offers to fix-up the GID and 270 * directory mode flags during a platform upgrade. 271 */ 272static int prepare_app_cache_dir(const std::string& parent, const char* name, mode_t target_mode, 273 uid_t uid, gid_t gid) { 274 auto path = StringPrintf("%s/%s", parent.c_str(), name); 275 struct stat st; 276 if (stat(path.c_str(), &st) != 0) { 277 if (errno == ENOENT) { 278 // This is fine, just create it 279 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, gid) != 0) { 280 PLOG(ERROR) << "Failed to prepare " << path; 281 return -1; 282 } else { 283 return 0; 284 } 285 } else { 286 PLOG(ERROR) << "Failed to stat " << path; 287 return -1; 288 } 289 } 290 291 mode_t actual_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO | S_ISGID); 292 if (st.st_uid != uid) { 293 // Mismatched UID is real trouble; we can't recover 294 LOG(ERROR) << "Mismatched UID at " << path << ": found " << st.st_uid 295 << " but expected " << uid; 296 return -1; 297 } else if (st.st_gid == gid && actual_mode == target_mode) { 298 // Everything looks good! 299 return 0; 300 } 301 302 // Directory is owned correctly, but GID or mode mismatch means it's 303 // probably a platform upgrade so we need to fix them 304 FTS *fts; 305 FTSENT *p; 306 char *argv[] = { (char*) path.c_str(), nullptr }; 307 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 308 PLOG(ERROR) << "Failed to fts_open " << path; 309 return -1; 310 } 311 while ((p = fts_read(fts)) != NULL) { 312 switch (p->fts_info) { 313 case FTS_DP: 314 if (chmod(p->fts_accpath, target_mode) != 0) { 315 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 316 } 317 // Intentional fall through to also set GID 318 case FTS_F: 319 if (chown(p->fts_accpath, -1, gid) != 0) { 320 PLOG(WARNING) << "Failed to chown " << p->fts_path; 321 } 322 break; 323 case FTS_SL: 324 case FTS_SLNONE: 325 if (lchown(p->fts_accpath, -1, gid) != 0) { 326 PLOG(WARNING) << "Failed to chown " << p->fts_path; 327 } 328 break; 329 } 330 } 331 fts_close(fts); 332 return 0; 333} 334 335binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 336 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 337 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 338 ENFORCE_UID(AID_SYSTEM); 339 CHECK_ARGUMENT_UUID(uuid); 340 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 341 std::lock_guard<std::recursive_mutex> lock(mLock); 342 343 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 344 const char* pkgname = packageName.c_str(); 345 346 // Assume invalid inode unless filled in below 347 if (_aidl_return != nullptr) *_aidl_return = -1; 348 349 int32_t uid = multiuser_get_uid(userId, appId); 350 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 351 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 352 353 // If UID doesn't have a specific cache GID, use UID value 354 if (cacheGid == -1) { 355 cacheGid = uid; 356 } 357 358 if (flags & FLAG_STORAGE_CE) { 359 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 360 bool existing = (access(path.c_str(), F_OK) == 0); 361 362 if (prepare_app_dir(path, targetMode, uid) || 363 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 364 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 365 return error("Failed to prepare " + path); 366 } 367 368 // Consider restorecon over contents if label changed 369 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 370 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 371 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 372 return error("Failed to restorecon " + path); 373 } 374 375 // Remember inode numbers of cache directories so that we can clear 376 // contents while CE storage is locked 377 if (write_path_inode(path, "cache", kXattrInodeCache) || 378 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 379 return error("Failed to write_path_inode for " + path); 380 } 381 382 // And return the CE inode of the top-level data directory so we can 383 // clear contents while CE storage is locked 384 if ((_aidl_return != nullptr) 385 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 386 return error("Failed to get_path_inode for " + path); 387 } 388 } 389 if (flags & FLAG_STORAGE_DE) { 390 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 391 bool existing = (access(path.c_str(), F_OK) == 0); 392 393 if (prepare_app_dir(path, targetMode, uid) || 394 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 395 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 396 return error("Failed to prepare " + path); 397 } 398 399 // Consider restorecon over contents if label changed 400 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 401 return error("Failed to restorecon " + path); 402 } 403 404 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 405 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 406 // read-write-execute only for the app user. 407 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 408 return error("Failed to prepare " + profile_path); 409 } 410 std::string profile_file = create_primary_profile(profile_path); 411 // read-write only for the app user. 412 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 413 return error("Failed to prepare " + profile_path); 414 } 415 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 416 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 417 // profiles. 418 int shared_app_gid = multiuser_get_shared_gid(0, appId); 419 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 420 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 421 return error("Failed to prepare " + ref_profile_path); 422 } 423 } 424 } 425 return ok(); 426} 427 428binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 429 const std::string& packageName, int32_t userId, int32_t flags) { 430 ENFORCE_UID(AID_SYSTEM); 431 CHECK_ARGUMENT_UUID(uuid); 432 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 433 std::lock_guard<std::recursive_mutex> lock(mLock); 434 435 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 436 const char* pkgname = packageName.c_str(); 437 438 // This method only exists to upgrade system apps that have requested 439 // forceDeviceEncrypted, so their default storage always lives in a 440 // consistent location. This only works on non-FBE devices, since we 441 // never want to risk exposing data on a device with real CE/DE storage. 442 443 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 444 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 445 446 // If neither directory is marked as default, assume CE is default 447 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 448 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 449 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 450 return error("Failed to mark default storage " + ce_path); 451 } 452 } 453 454 // Migrate default data location if needed 455 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 456 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 457 458 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 459 LOG(WARNING) << "Requested default storage " << target 460 << " is not active; migrating from " << source; 461 if (delete_dir_contents_and_dir(target) != 0) { 462 return error("Failed to delete " + target); 463 } 464 if (rename(source.c_str(), target.c_str()) != 0) { 465 return error("Failed to rename " + source + " to " + target); 466 } 467 } 468 469 return ok(); 470} 471 472 473binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 474 ENFORCE_UID(AID_SYSTEM); 475 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 476 std::lock_guard<std::recursive_mutex> lock(mLock); 477 478 const char* pkgname = packageName.c_str(); 479 binder::Status res = ok(); 480 if (!clear_reference_profile(pkgname)) { 481 res = error("Failed to clear reference profile for " + packageName); 482 } 483 if (!clear_current_profiles(pkgname)) { 484 res = error("Failed to clear current profiles for " + packageName); 485 } 486 return res; 487} 488 489binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 490 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 491 ENFORCE_UID(AID_SYSTEM); 492 CHECK_ARGUMENT_UUID(uuid); 493 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 494 std::lock_guard<std::recursive_mutex> lock(mLock); 495 496 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 497 const char* pkgname = packageName.c_str(); 498 499 binder::Status res = ok(); 500 if (flags & FLAG_STORAGE_CE) { 501 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 502 if (flags & FLAG_CLEAR_CACHE_ONLY) { 503 path = read_path_inode(path, "cache", kXattrInodeCache); 504 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 505 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 506 } 507 if (access(path.c_str(), F_OK) == 0) { 508 if (delete_dir_contents(path) != 0) { 509 res = error("Failed to delete contents of " + path); 510 } 511 } 512 } 513 if (flags & FLAG_STORAGE_DE) { 514 std::string suffix = ""; 515 bool only_cache = false; 516 if (flags & FLAG_CLEAR_CACHE_ONLY) { 517 suffix = CACHE_DIR_POSTFIX; 518 only_cache = true; 519 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 520 suffix = CODE_CACHE_DIR_POSTFIX; 521 only_cache = true; 522 } 523 524 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 525 if (access(path.c_str(), F_OK) == 0) { 526 if (delete_dir_contents(path) != 0) { 527 res = error("Failed to delete contents of " + path); 528 } 529 } 530 if (!only_cache) { 531 if (!clear_current_profile(pkgname, userId)) { 532 res = error("Failed to clear current profile for " + packageName); 533 } 534 } 535 } 536 return res; 537} 538 539static int destroy_app_reference_profile(const char *pkgname) { 540 return delete_dir_contents_and_dir( 541 create_data_ref_profile_package_path(pkgname), 542 /*ignore_if_missing*/ true); 543} 544 545static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 546 return delete_dir_contents_and_dir( 547 create_data_user_profile_package_path(userid, pkgname), 548 /*ignore_if_missing*/ true); 549} 550 551binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 552 ENFORCE_UID(AID_SYSTEM); 553 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 554 std::lock_guard<std::recursive_mutex> lock(mLock); 555 556 const char* pkgname = packageName.c_str(); 557 binder::Status res = ok(); 558 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 559 for (auto user : users) { 560 if (destroy_app_current_profiles(pkgname, user) != 0) { 561 res = error("Failed to destroy current profiles for " + packageName); 562 } 563 } 564 if (destroy_app_reference_profile(pkgname) != 0) { 565 res = error("Failed to destroy reference profile for " + packageName); 566 } 567 return res; 568} 569 570binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 571 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 572 ENFORCE_UID(AID_SYSTEM); 573 CHECK_ARGUMENT_UUID(uuid); 574 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 575 std::lock_guard<std::recursive_mutex> lock(mLock); 576 577 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 578 const char* pkgname = packageName.c_str(); 579 580 binder::Status res = ok(); 581 if (flags & FLAG_STORAGE_CE) { 582 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 583 if (delete_dir_contents_and_dir(path) != 0) { 584 res = error("Failed to delete " + path); 585 } 586 } 587 if (flags & FLAG_STORAGE_DE) { 588 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 589 if (delete_dir_contents_and_dir(path) != 0) { 590 res = error("Failed to delete " + path); 591 } 592 destroy_app_current_profiles(pkgname, userId); 593 // TODO(calin): If the package is still installed by other users it's probably 594 // beneficial to keep the reference profile around. 595 // Verify if it's ok to do that. 596 destroy_app_reference_profile(pkgname); 597 } 598 return res; 599} 600 601binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 602 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 603 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 604 int32_t targetSdkVersion) { 605 ENFORCE_UID(AID_SYSTEM); 606 CHECK_ARGUMENT_UUID(fromUuid); 607 CHECK_ARGUMENT_UUID(toUuid); 608 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 609 std::lock_guard<std::recursive_mutex> lock(mLock); 610 611 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 612 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 613 const char* package_name = packageName.c_str(); 614 const char* data_app_name = dataAppName.c_str(); 615 616 binder::Status res = ok(); 617 std::vector<userid_t> users = get_known_users(from_uuid); 618 619 // Copy app 620 { 621 auto from = create_data_app_package_path(from_uuid, data_app_name); 622 auto to = create_data_app_package_path(to_uuid, data_app_name); 623 auto to_parent = create_data_app_path(to_uuid); 624 625 char *argv[] = { 626 (char*) kCpPath, 627 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 628 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 629 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 630 (char*) "-P", /* Do not follow symlinks [default] */ 631 (char*) "-d", /* don't dereference symlinks */ 632 (char*) from.c_str(), 633 (char*) to_parent.c_str() 634 }; 635 636 LOG(DEBUG) << "Copying " << from << " to " << to; 637 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 638 if (rc != 0) { 639 res = error(rc, "Failed copying " + from + " to " + to); 640 goto fail; 641 } 642 643 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 644 res = error("Failed to restorecon " + to); 645 goto fail; 646 } 647 } 648 649 // Copy private data for all known users 650 for (auto user : users) { 651 652 // Data source may not exist for all users; that's okay 653 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 654 if (access(from_ce.c_str(), F_OK) != 0) { 655 LOG(INFO) << "Missing source " << from_ce; 656 continue; 657 } 658 659 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 660 seInfo, targetSdkVersion, nullptr).isOk()) { 661 res = error("Failed to create package target"); 662 goto fail; 663 } 664 665 char *argv[] = { 666 (char*) kCpPath, 667 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 668 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 669 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 670 (char*) "-P", /* Do not follow symlinks [default] */ 671 (char*) "-d", /* don't dereference symlinks */ 672 nullptr, 673 nullptr 674 }; 675 676 { 677 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 678 auto to = create_data_user_de_path(to_uuid, user); 679 argv[6] = (char*) from.c_str(); 680 argv[7] = (char*) to.c_str(); 681 682 LOG(DEBUG) << "Copying " << from << " to " << to; 683 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 684 if (rc != 0) { 685 res = error(rc, "Failed copying " + from + " to " + to); 686 goto fail; 687 } 688 } 689 { 690 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 691 auto to = create_data_user_ce_path(to_uuid, user); 692 argv[6] = (char*) from.c_str(); 693 argv[7] = (char*) to.c_str(); 694 695 LOG(DEBUG) << "Copying " << from << " to " << to; 696 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 697 if (rc != 0) { 698 res = error(rc, "Failed copying " + from + " to " + to); 699 goto fail; 700 } 701 } 702 703 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 704 appId, seInfo).isOk()) { 705 res = error("Failed to restorecon"); 706 goto fail; 707 } 708 } 709 710 // We let the framework scan the new location and persist that before 711 // deleting the data in the old location; this ordering ensures that 712 // we can recover from things like battery pulls. 713 return ok(); 714 715fail: 716 // Nuke everything we might have already copied 717 { 718 auto to = create_data_app_package_path(to_uuid, data_app_name); 719 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 720 LOG(WARNING) << "Failed to rollback " << to; 721 } 722 } 723 for (auto user : users) { 724 { 725 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 726 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 727 LOG(WARNING) << "Failed to rollback " << to; 728 } 729 } 730 { 731 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 732 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 733 LOG(WARNING) << "Failed to rollback " << to; 734 } 735 } 736 } 737 return res; 738} 739 740binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 741 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 742 ENFORCE_UID(AID_SYSTEM); 743 CHECK_ARGUMENT_UUID(uuid); 744 std::lock_guard<std::recursive_mutex> lock(mLock); 745 746 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 747 if (flags & FLAG_STORAGE_DE) { 748 if (uuid_ == nullptr) { 749 if (ensure_config_user_dirs(userId) != 0) { 750 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 751 } 752 } 753 } 754 return ok(); 755} 756 757binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 758 int32_t userId, int32_t flags) { 759 ENFORCE_UID(AID_SYSTEM); 760 CHECK_ARGUMENT_UUID(uuid); 761 std::lock_guard<std::recursive_mutex> lock(mLock); 762 763 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 764 binder::Status res = ok(); 765 if (flags & FLAG_STORAGE_DE) { 766 auto path = create_data_user_de_path(uuid_, userId); 767 if (delete_dir_contents_and_dir(path, true) != 0) { 768 res = error("Failed to delete " + path); 769 } 770 if (uuid_ == nullptr) { 771 path = create_data_misc_legacy_path(userId); 772 if (delete_dir_contents_and_dir(path, true) != 0) { 773 res = error("Failed to delete " + path); 774 } 775 path = create_data_user_profile_path(userId); 776 if (delete_dir_contents_and_dir(path, true) != 0) { 777 res = error("Failed to delete " + path); 778 } 779 } 780 } 781 if (flags & FLAG_STORAGE_CE) { 782 auto path = create_data_user_ce_path(uuid_, userId); 783 if (delete_dir_contents_and_dir(path, true) != 0) { 784 res = error("Failed to delete " + path); 785 } 786 path = create_data_media_path(uuid_, userId); 787 if (delete_dir_contents_and_dir(path, true) != 0) { 788 res = error("Failed to delete " + path); 789 } 790 } 791 return res; 792} 793 794/* Try to ensure free_size bytes of storage are available. 795 * Returns 0 on success. 796 * This is rather simple-minded because doing a full LRU would 797 * be potentially memory-intensive, and without atime it would 798 * also require that apps constantly modify file metadata even 799 * when just reading from the cache, which is pretty awful. 800 */ 801binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 802 int64_t freeStorageSize) { 803 ENFORCE_UID(AID_SYSTEM); 804 CHECK_ARGUMENT_UUID(uuid); 805 std::lock_guard<std::recursive_mutex> lock(mLock); 806 807 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 808 cache_t* cache; 809 int64_t avail; 810 811 auto data_path = create_data_path(uuid_); 812 813 avail = data_disk_free(data_path); 814 if (avail < 0) { 815 return error("Failed to determine free space for " + data_path); 816 } 817 818 ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail); 819 if (avail >= freeStorageSize) { 820 return ok(); 821 } 822 823 cache = start_cache_collection(); 824 825 auto users = get_known_users(uuid_); 826 for (auto user : users) { 827 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 828 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 829 add_cache_files(cache, 830 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 831 } 832 833 clear_cache_files(data_path, cache, freeStorageSize); 834 finish_cache_collection(cache); 835 836 avail = data_disk_free(data_path); 837 if (avail >= freeStorageSize) { 838 return ok(); 839 } else { 840 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 841 freeStorageSize, data_path.c_str(), avail)); 842 } 843} 844 845binder::Status InstalldNativeService::rmdex(const std::string& codePath, 846 const std::string& instructionSet) { 847 ENFORCE_UID(AID_SYSTEM); 848 std::lock_guard<std::recursive_mutex> lock(mLock); 849 850 char dex_path[PKG_PATH_MAX]; 851 852 const char* path = codePath.c_str(); 853 const char* instruction_set = instructionSet.c_str(); 854 855 if (validate_apk_path(path) && validate_system_app_path(path)) { 856 return error("Invalid path " + codePath); 857 } 858 859 if (!create_cache_path(dex_path, path, instruction_set)) { 860 return error("Failed to create cache path for " + codePath); 861 } 862 863 ALOGV("unlink %s\n", dex_path); 864 if (unlink(dex_path) < 0) { 865 return error(StringPrintf("Failed to unlink %s", dex_path)); 866 } else { 867 return ok(); 868 } 869} 870 871struct stats { 872 int64_t codeSize; 873 int64_t dataSize; 874 int64_t cacheSize; 875}; 876 877#if MEASURE_DEBUG 878static std::string toString(std::vector<int64_t> values) { 879 std::stringstream res; 880 res << "["; 881 for (size_t i = 0; i < values.size(); i++) { 882 res << values[i]; 883 if (i < values.size() - 1) { 884 res << ","; 885 } 886 } 887 res << "]"; 888 return res.str(); 889} 890#endif 891 892static std::string findDeviceForUuid(const std::unique_ptr<std::string>& uuid) { 893 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 894 std::ifstream in("/proc/mounts"); 895 if (!in.is_open()) { 896 PLOG(ERROR) << "Failed to read mounts"; 897 return ""; 898 } 899 std::string source; 900 std::string target; 901 while (!in.eof()) { 902 std::getline(in, source, ' '); 903 std::getline(in, target, ' '); 904 if (target == path) { 905 return source; 906 } 907 // Skip to next line 908 std::getline(in, source); 909 } 910 PLOG(ERROR) << "Failed to resolve block device for " << path; 911 return ""; 912} 913 914static void collectQuotaStats(const std::string& device, int32_t userId, 915 int32_t appId, struct stats* stats, struct stats* extStats ATTRIBUTE_UNUSED) { 916 if (device.empty()) return; 917 918 struct dqblk dq; 919 920 uid_t uid = multiuser_get_uid(userId, appId); 921 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 922 reinterpret_cast<char*>(&dq)) != 0) { 923 if (errno != ESRCH) { 924 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 925 } 926 } else { 927#if MEASURE_DEBUG 928 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 929#endif 930 stats->dataSize += dq.dqb_curspace; 931 } 932 933 int cacheGid = multiuser_get_cache_gid(userId, appId); 934 if (cacheGid != -1) { 935 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 936 reinterpret_cast<char*>(&dq)) != 0) { 937 if (errno != ESRCH) { 938 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 939 } 940 } else { 941#if MEASURE_DEBUG 942 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 943#endif 944 stats->cacheSize += dq.dqb_curspace; 945 } 946 } 947 948 int sharedGid = multiuser_get_shared_app_gid(uid); 949 if (sharedGid != -1) { 950 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 951 reinterpret_cast<char*>(&dq)) != 0) { 952 if (errno != ESRCH) { 953 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 954 } 955 } else { 956#if MEASURE_DEBUG 957 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 958#endif 959 stats->codeSize += dq.dqb_curspace; 960 } 961 } 962 963#if MEASURE_EXTERNAL 964 // TODO: measure using external GIDs 965#endif 966} 967 968static void collectQuotaStats(const std::unique_ptr<std::string>& uuid, int32_t userId, 969 int32_t appId, struct stats* stats, struct stats* extStats) { 970 collectQuotaStats(findDeviceForUuid(uuid), userId, appId, stats, extStats); 971} 972 973static void collectManualStats(const std::string& path, struct stats* stats) { 974 DIR *d; 975 int dfd; 976 struct dirent *de; 977 struct stat s; 978 979 d = opendir(path.c_str()); 980 if (d == nullptr) { 981 if (errno != ENOENT) { 982 PLOG(WARNING) << "Failed to open " << path; 983 } 984 return; 985 } 986 dfd = dirfd(d); 987 while ((de = readdir(d))) { 988 const char *name = de->d_name; 989 990 int64_t size = 0; 991 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 992 size = s.st_blocks * 512; 993 } 994 995 if (de->d_type == DT_DIR) { 996 if (!strcmp(name, ".")) { 997 // Don't recurse, but still count node size 998 } else if (!strcmp(name, "..")) { 999 // Don't recurse or count node size 1000 continue; 1001 } else { 1002 // Measure all children nodes 1003 size = 0; 1004 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1005 } 1006 1007 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1008 stats->cacheSize += size; 1009 } 1010 } 1011 1012 // Legacy symlink isn't owned by app 1013 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1014 continue; 1015 } 1016 1017 // Everything found inside is considered data 1018 stats->dataSize += size; 1019 } 1020 closedir(d); 1021} 1022 1023static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1024 bool exclude_apps = false) { 1025 DIR *d; 1026 int dfd; 1027 struct dirent *de; 1028 struct stat s; 1029 1030 d = opendir(path.c_str()); 1031 if (d == nullptr) { 1032 if (errno != ENOENT) { 1033 PLOG(WARNING) << "Failed to open " << path; 1034 } 1035 return; 1036 } 1037 dfd = dirfd(d); 1038 while ((de = readdir(d))) { 1039 if (de->d_type == DT_DIR) { 1040 const char *name = de->d_name; 1041 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1042 continue; 1043 } 1044 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1045 continue; 1046 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1047 continue; 1048 } else { 1049 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1050 } 1051 } 1052 } 1053 closedir(d); 1054} 1055 1056binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1057 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1058 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1059 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1060 ENFORCE_UID(AID_SYSTEM); 1061 CHECK_ARGUMENT_UUID(uuid); 1062 for (auto packageName : packageNames) { 1063 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1064 } 1065 std::lock_guard<std::recursive_mutex> lock(mLock); 1066 1067 // When modifying this logic, always verify using tests: 1068 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1069 1070#if MEASURE_DEBUG 1071 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1072#endif 1073 1074 // Here's a summary of the common storage locations across the platform, 1075 // and how they're each tagged: 1076 // 1077 // /data/app/com.example UID system 1078 // /data/app/com.example/oat UID system 1079 // /data/user/0/com.example UID u0_a10 GID u0_a10 1080 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1081 // /data/media/0/foo.txt UID u0_media_rw 1082 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1083 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1084 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1085 // /data/media/obb/com.example UID system 1086 1087 struct stats stats; 1088 struct stats extStats; 1089 memset(&stats, 0, sizeof(stats)); 1090 memset(&extStats, 0, sizeof(extStats)); 1091 1092 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1093 1094 for (auto packageName : packageNames) { 1095 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1096 calculate_tree_size(obbCodePath, &extStats.codeSize); 1097 } 1098 1099 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1100 for (auto codePath : codePaths) { 1101 calculate_tree_size(codePath, &stats.codeSize, -1, 1102 multiuser_get_shared_gid(userId, appId)); 1103 } 1104 1105 collectQuotaStats(uuid, userId, appId, &stats, &extStats); 1106 1107 } else { 1108 for (auto codePath : codePaths) { 1109 calculate_tree_size(codePath, &stats.codeSize); 1110 } 1111 1112 for (size_t i = 0; i < packageNames.size(); i++) { 1113 const char* pkgname = packageNames[i].c_str(); 1114 1115 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1116 collectManualStats(cePath, &stats); 1117 1118 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1119 collectManualStats(dePath, &stats); 1120 1121 auto userProfilePath = create_data_user_profile_package_path(userId, pkgname); 1122 calculate_tree_size(userProfilePath, &stats.dataSize); 1123 1124 auto refProfilePath = create_data_ref_profile_package_path(pkgname); 1125 calculate_tree_size(refProfilePath, &stats.codeSize); 1126 1127#if MEASURE_EXTERNAL 1128 auto extPath = create_data_media_package_path(uuid_, userId, pkgname, "data"); 1129 collectManualStats(extPath, &extStats); 1130 1131 auto mediaPath = create_data_media_package_path(uuid_, userId, pkgname, "media"); 1132 calculate_tree_size(mediaPath, &extStats.dataSize); 1133#endif 1134 } 1135 1136 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1137 if (sharedGid != -1) { 1138 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1139 sharedGid, -1); 1140 } 1141 1142 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1143 multiuser_get_uid(userId, appId), -1); 1144 } 1145 1146 std::vector<int64_t> ret; 1147 ret.push_back(stats.codeSize); 1148 ret.push_back(stats.dataSize); 1149 ret.push_back(stats.cacheSize); 1150 ret.push_back(extStats.codeSize); 1151 ret.push_back(extStats.dataSize); 1152 ret.push_back(extStats.cacheSize); 1153#if MEASURE_DEBUG 1154 LOG(DEBUG) << "Final result " << toString(ret); 1155#endif 1156 *_aidl_return = ret; 1157 return ok(); 1158} 1159 1160binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1161 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1162 std::vector<int64_t>* _aidl_return) { 1163 ENFORCE_UID(AID_SYSTEM); 1164 CHECK_ARGUMENT_UUID(uuid); 1165 std::lock_guard<std::recursive_mutex> lock(mLock); 1166 1167 // When modifying this logic, always verify using tests: 1168 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1169 1170#if MEASURE_DEBUG 1171 LOG(INFO) << "Measuring user " << userId; 1172#endif 1173 1174 struct stats stats; 1175 struct stats extStats; 1176 memset(&stats, 0, sizeof(stats)); 1177 memset(&extStats, 0, sizeof(extStats)); 1178 1179 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1180 1181 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1182 calculate_tree_size(obbPath, &extStats.codeSize); 1183 1184 if (flags & FLAG_USE_QUOTA) { 1185 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1186 1187 auto cePath = create_data_user_ce_path(uuid_, userId); 1188 collectManualStatsForUser(cePath, &stats, true); 1189 1190 auto dePath = create_data_user_de_path(uuid_, userId); 1191 collectManualStatsForUser(dePath, &stats, true); 1192 1193 auto userProfilePath = create_data_user_profile_path(userId); 1194 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1195 1196 auto refProfilePath = create_data_ref_profile_path(); 1197 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1198 1199#if MEASURE_EXTERNAL 1200 // TODO: measure external storage paths 1201#endif 1202 1203 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1204 -1, -1, true); 1205 1206 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1207 -1, -1, true); 1208 1209 auto device = findDeviceForUuid(uuid); 1210 for (auto appId : appIds) { 1211 if (appId >= AID_APP_START) { 1212 collectQuotaStats(device, userId, appId, &stats, &extStats); 1213#if MEASURE_DEBUG 1214 // Sleep to make sure we don't lose logs 1215 usleep(1); 1216#endif 1217 } 1218 } 1219 } else { 1220 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1221 1222 auto cePath = create_data_user_ce_path(uuid_, userId); 1223 collectManualStatsForUser(cePath, &stats); 1224 1225 auto dePath = create_data_user_de_path(uuid_, userId); 1226 collectManualStatsForUser(dePath, &stats); 1227 1228 auto userProfilePath = create_data_user_profile_path(userId); 1229 calculate_tree_size(userProfilePath, &stats.dataSize); 1230 1231 auto refProfilePath = create_data_ref_profile_path(); 1232 calculate_tree_size(refProfilePath, &stats.codeSize); 1233 1234#if MEASURE_EXTERNAL 1235 // TODO: measure external storage paths 1236#endif 1237 1238 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1239 1240 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize); 1241 } 1242 1243 std::vector<int64_t> ret; 1244 ret.push_back(stats.codeSize); 1245 ret.push_back(stats.dataSize); 1246 ret.push_back(stats.cacheSize); 1247 ret.push_back(extStats.codeSize); 1248 ret.push_back(extStats.dataSize); 1249 ret.push_back(extStats.cacheSize); 1250#if MEASURE_DEBUG 1251 LOG(DEBUG) << "Final result " << toString(ret); 1252#endif 1253 *_aidl_return = ret; 1254 return ok(); 1255} 1256 1257binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1258 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1259 ENFORCE_UID(AID_SYSTEM); 1260 CHECK_ARGUMENT_UUID(uuid); 1261 std::lock_guard<std::recursive_mutex> lock(mLock); 1262 1263 // When modifying this logic, always verify using tests: 1264 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1265 1266#if MEASURE_DEBUG 1267 LOG(INFO) << "Measuring external " << userId; 1268#endif 1269 1270 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1271 1272 int64_t totalSize = 0; 1273 int64_t audioSize = 0; 1274 int64_t videoSize = 0; 1275 int64_t imageSize = 0; 1276 1277 if (flags & FLAG_USE_QUOTA) { 1278 struct dqblk dq; 1279 1280 auto device = findDeviceForUuid(uuid); 1281 1282 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1283 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1284 reinterpret_cast<char*>(&dq)) != 0) { 1285 if (errno != ESRCH) { 1286 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1287 } 1288 } else { 1289#if MEASURE_DEBUG 1290 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1291#endif 1292 totalSize = dq.dqb_curspace; 1293 } 1294 1295 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1296 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1297 reinterpret_cast<char*>(&dq)) == 0) { 1298#if MEASURE_DEBUG 1299 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1300#endif 1301 audioSize = dq.dqb_curspace; 1302 } 1303 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1304 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1305 reinterpret_cast<char*>(&dq)) == 0) { 1306#if MEASURE_DEBUG 1307 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1308#endif 1309 videoSize = dq.dqb_curspace; 1310 } 1311 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1312 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1313 reinterpret_cast<char*>(&dq)) == 0) { 1314#if MEASURE_DEBUG 1315 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1316#endif 1317 imageSize = dq.dqb_curspace; 1318 } 1319 } else { 1320 FTS *fts; 1321 FTSENT *p; 1322 auto path = create_data_media_path(uuid_, userId); 1323 char *argv[] = { (char*) path.c_str(), nullptr }; 1324 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1325 return error("Failed to fts_open " + path); 1326 } 1327 while ((p = fts_read(fts)) != NULL) { 1328 char* ext; 1329 int64_t size = (p->fts_statp->st_blocks * 512); 1330 switch (p->fts_info) { 1331 case FTS_F: 1332 // Only categorize files not belonging to apps 1333 if (p->fts_statp->st_gid < AID_APP_START) { 1334 ext = strrchr(p->fts_name, '.'); 1335 if (ext != nullptr) { 1336 switch (MatchExtension(++ext)) { 1337 case AID_MEDIA_AUDIO: audioSize += size; break; 1338 case AID_MEDIA_VIDEO: videoSize += size; break; 1339 case AID_MEDIA_IMAGE: imageSize += size; break; 1340 } 1341 } 1342 } 1343 // Fall through to always count against total 1344 case FTS_D: 1345 case FTS_DEFAULT: 1346 case FTS_SL: 1347 case FTS_SLNONE: 1348 totalSize += size; 1349 break; 1350 } 1351 } 1352 fts_close(fts); 1353 } 1354 1355 std::vector<int64_t> ret; 1356 ret.push_back(totalSize); 1357 ret.push_back(audioSize); 1358 ret.push_back(videoSize); 1359 ret.push_back(imageSize); 1360#if MEASURE_DEBUG 1361 LOG(DEBUG) << "Final result " << toString(ret); 1362#endif 1363 *_aidl_return = ret; 1364 return ok(); 1365} 1366 1367// Dumps the contents of a profile file, using pkgname's dex files for pretty 1368// printing the result. 1369binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1370 const std::string& codePaths, bool* _aidl_return) { 1371 ENFORCE_UID(AID_SYSTEM); 1372 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1373 std::lock_guard<std::recursive_mutex> lock(mLock); 1374 1375 const char* pkgname = packageName.c_str(); 1376 const char* code_paths = codePaths.c_str(); 1377 1378 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1379 return ok(); 1380} 1381 1382// TODO: Consider returning error codes. 1383binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1384 bool* _aidl_return) { 1385 ENFORCE_UID(AID_SYSTEM); 1386 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1387 std::lock_guard<std::recursive_mutex> lock(mLock); 1388 1389 const char* pkgname = packageName.c_str(); 1390 *_aidl_return = analyse_profiles(uid, pkgname); 1391 return ok(); 1392} 1393 1394binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1395 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1396 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1397 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1398 const std::unique_ptr<std::string>& sharedLibraries) { 1399 ENFORCE_UID(AID_SYSTEM); 1400 CHECK_ARGUMENT_UUID(uuid); 1401 if (packageName && *packageName != "*") { 1402 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1403 } 1404 std::lock_guard<std::recursive_mutex> lock(mLock); 1405 1406 const char* apk_path = apkPath.c_str(); 1407 const char* pkgname = packageName ? packageName->c_str() : "*"; 1408 const char* instruction_set = instructionSet.c_str(); 1409 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1410 const char* compiler_filter = compilerFilter.c_str(); 1411 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1412 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1413 1414 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1415 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 1416 return res ? error(res, "Failed to dexopt") : ok(); 1417} 1418 1419binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1420 ENFORCE_UID(AID_SYSTEM); 1421 std::lock_guard<std::recursive_mutex> lock(mLock); 1422 1423 const char* instruction_set = instructionSet.c_str(); 1424 1425 char boot_marker_path[PKG_PATH_MAX]; 1426 sprintf(boot_marker_path, 1427 "%s/%s/%s/.booting", 1428 android_data_dir.path, 1429 DALVIK_CACHE, 1430 instruction_set); 1431 1432 ALOGV("mark_boot_complete : %s", boot_marker_path); 1433 if (unlink(boot_marker_path) != 0) { 1434 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1435 } 1436 return ok(); 1437} 1438 1439void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1440 struct stat* statbuf) 1441{ 1442 while (path[basepos] != 0) { 1443 if (path[basepos] == '/') { 1444 path[basepos] = 0; 1445 if (lstat(path, statbuf) < 0) { 1446 ALOGV("Making directory: %s\n", path); 1447 if (mkdir(path, mode) == 0) { 1448 chown(path, uid, gid); 1449 } else { 1450 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1451 } 1452 } 1453 path[basepos] = '/'; 1454 basepos++; 1455 } 1456 basepos++; 1457 } 1458} 1459 1460binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1461 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1462 const std::string& nativeLibPath32, int32_t userId) { 1463 ENFORCE_UID(AID_SYSTEM); 1464 CHECK_ARGUMENT_UUID(uuid); 1465 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1466 std::lock_guard<std::recursive_mutex> lock(mLock); 1467 1468 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1469 const char* pkgname = packageName.c_str(); 1470 const char* asecLibDir = nativeLibPath32.c_str(); 1471 struct stat s, libStat; 1472 binder::Status res = ok(); 1473 1474 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1475 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1476 1477 const char* pkgdir = _pkgdir.c_str(); 1478 const char* libsymlink = _libsymlink.c_str(); 1479 1480 if (stat(pkgdir, &s) < 0) { 1481 return error("Failed to stat " + _pkgdir); 1482 } 1483 1484 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1485 return error("Failed to chown " + _pkgdir); 1486 } 1487 1488 if (chmod(pkgdir, 0700) < 0) { 1489 res = error("Failed to chmod " + _pkgdir); 1490 goto out; 1491 } 1492 1493 if (lstat(libsymlink, &libStat) < 0) { 1494 if (errno != ENOENT) { 1495 res = error("Failed to stat " + _libsymlink); 1496 goto out; 1497 } 1498 } else { 1499 if (S_ISDIR(libStat.st_mode)) { 1500 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1501 res = error("Failed to delete " + _libsymlink); 1502 goto out; 1503 } 1504 } else if (S_ISLNK(libStat.st_mode)) { 1505 if (unlink(libsymlink) < 0) { 1506 res = error("Failed to unlink " + _libsymlink); 1507 goto out; 1508 } 1509 } 1510 } 1511 1512 if (symlink(asecLibDir, libsymlink) < 0) { 1513 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1514 goto out; 1515 } 1516 1517out: 1518 if (chmod(pkgdir, s.st_mode) < 0) { 1519 auto msg = "Failed to cleanup chmod " + _pkgdir; 1520 if (res.isOk()) { 1521 res = error(msg); 1522 } else { 1523 PLOG(ERROR) << msg; 1524 } 1525 } 1526 1527 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1528 auto msg = "Failed to cleanup chown " + _pkgdir; 1529 if (res.isOk()) { 1530 res = error(msg); 1531 } else { 1532 PLOG(ERROR) << msg; 1533 } 1534 } 1535 1536 return res; 1537} 1538 1539static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1540{ 1541 static const char *IDMAP_BIN = "/system/bin/idmap"; 1542 static const size_t MAX_INT_LEN = 32; 1543 char idmap_str[MAX_INT_LEN]; 1544 1545 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1546 1547 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1548 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1549} 1550 1551// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1552// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1553static int flatten_path(const char *prefix, const char *suffix, 1554 const char *overlay_path, char *idmap_path, size_t N) 1555{ 1556 if (overlay_path == NULL || idmap_path == NULL) { 1557 return -1; 1558 } 1559 const size_t len_overlay_path = strlen(overlay_path); 1560 // will access overlay_path + 1 further below; requires absolute path 1561 if (len_overlay_path < 2 || *overlay_path != '/') { 1562 return -1; 1563 } 1564 const size_t len_idmap_root = strlen(prefix); 1565 const size_t len_suffix = strlen(suffix); 1566 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1567 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1568 // additions below would cause overflow 1569 return -1; 1570 } 1571 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1572 return -1; 1573 } 1574 memset(idmap_path, 0, N); 1575 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1576 char *ch = idmap_path + len_idmap_root; 1577 while (*ch != '\0') { 1578 if (*ch == '/') { 1579 *ch = '@'; 1580 } 1581 ++ch; 1582 } 1583 return 0; 1584} 1585 1586binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1587 const std::string& overlayApkPath, int32_t uid) { 1588 ENFORCE_UID(AID_SYSTEM); 1589 std::lock_guard<std::recursive_mutex> lock(mLock); 1590 1591 const char* target_apk = targetApkPath.c_str(); 1592 const char* overlay_apk = overlayApkPath.c_str(); 1593 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1594 1595 int idmap_fd = -1; 1596 char idmap_path[PATH_MAX]; 1597 1598 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1599 idmap_path, sizeof(idmap_path)) == -1) { 1600 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1601 goto fail; 1602 } 1603 1604 unlink(idmap_path); 1605 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1606 if (idmap_fd < 0) { 1607 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1608 goto fail; 1609 } 1610 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1611 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1612 goto fail; 1613 } 1614 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1615 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1616 goto fail; 1617 } 1618 1619 pid_t pid; 1620 pid = fork(); 1621 if (pid == 0) { 1622 /* child -- drop privileges before continuing */ 1623 if (setgid(uid) != 0) { 1624 ALOGE("setgid(%d) failed during idmap\n", uid); 1625 exit(1); 1626 } 1627 if (setuid(uid) != 0) { 1628 ALOGE("setuid(%d) failed during idmap\n", uid); 1629 exit(1); 1630 } 1631 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1632 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1633 exit(1); 1634 } 1635 1636 run_idmap(target_apk, overlay_apk, idmap_fd); 1637 exit(1); /* only if exec call to idmap failed */ 1638 } else { 1639 int status = wait_child(pid); 1640 if (status != 0) { 1641 ALOGE("idmap failed, status=0x%04x\n", status); 1642 goto fail; 1643 } 1644 } 1645 1646 close(idmap_fd); 1647 return ok(); 1648fail: 1649 if (idmap_fd >= 0) { 1650 close(idmap_fd); 1651 unlink(idmap_path); 1652 } 1653 return error(); 1654} 1655 1656binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1657 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1658 const std::string& seInfo) { 1659 ENFORCE_UID(AID_SYSTEM); 1660 CHECK_ARGUMENT_UUID(uuid); 1661 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1662 std::lock_guard<std::recursive_mutex> lock(mLock); 1663 1664 binder::Status res = ok(); 1665 1666 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1667 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1668 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1669 const char* pkgName = packageName.c_str(); 1670 const char* seinfo = seInfo.c_str(); 1671 1672 uid_t uid = multiuser_get_uid(userId, appId); 1673 if (flags & FLAG_STORAGE_CE) { 1674 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1675 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1676 res = error("restorecon failed for " + path); 1677 } 1678 } 1679 if (flags & FLAG_STORAGE_DE) { 1680 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1681 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1682 res = error("restorecon failed for " + path); 1683 } 1684 } 1685 return res; 1686} 1687 1688binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1689 const std::string& instructionSet) { 1690 ENFORCE_UID(AID_SYSTEM); 1691 std::lock_guard<std::recursive_mutex> lock(mLock); 1692 1693 const char* oat_dir = oatDir.c_str(); 1694 const char* instruction_set = instructionSet.c_str(); 1695 char oat_instr_dir[PKG_PATH_MAX]; 1696 1697 if (validate_apk_path(oat_dir)) { 1698 return error("Invalid path " + oatDir); 1699 } 1700 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1701 return error("Failed to prepare " + oatDir); 1702 } 1703 if (selinux_android_restorecon(oat_dir, 0)) { 1704 return error("Failed to restorecon " + oatDir); 1705 } 1706 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1707 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1708 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1709 } 1710 return ok(); 1711} 1712 1713binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1714 ENFORCE_UID(AID_SYSTEM); 1715 std::lock_guard<std::recursive_mutex> lock(mLock); 1716 1717 if (validate_apk_path(packageDir.c_str())) { 1718 return error("Invalid path " + packageDir); 1719 } 1720 if (delete_dir_contents_and_dir(packageDir) != 0) { 1721 return error("Failed to delete " + packageDir); 1722 } 1723 return ok(); 1724} 1725 1726binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1727 const std::string& fromBase, const std::string& toBase) { 1728 ENFORCE_UID(AID_SYSTEM); 1729 std::lock_guard<std::recursive_mutex> lock(mLock); 1730 1731 const char* relative_path = relativePath.c_str(); 1732 const char* from_base = fromBase.c_str(); 1733 const char* to_base = toBase.c_str(); 1734 char from_path[PKG_PATH_MAX]; 1735 char to_path[PKG_PATH_MAX]; 1736 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1737 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1738 1739 if (validate_apk_path_subdirs(from_path)) { 1740 return error(StringPrintf("Invalid from path %s", from_path)); 1741 } 1742 1743 if (validate_apk_path_subdirs(to_path)) { 1744 return error(StringPrintf("Invalid to path %s", to_path)); 1745 } 1746 1747 if (link(from_path, to_path) < 0) { 1748 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1749 } 1750 1751 return ok(); 1752} 1753 1754binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1755 const std::string& instructionSet, const std::string& outputPath) { 1756 ENFORCE_UID(AID_SYSTEM); 1757 std::lock_guard<std::recursive_mutex> lock(mLock); 1758 1759 const char* apk_path = apkPath.c_str(); 1760 const char* instruction_set = instructionSet.c_str(); 1761 const char* oat_dir = outputPath.c_str(); 1762 1763 bool success = move_ab(apk_path, instruction_set, oat_dir); 1764 return success ? ok() : error(); 1765} 1766 1767binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1768 const std::string& instructionSet, const std::string& outputPath) { 1769 ENFORCE_UID(AID_SYSTEM); 1770 std::lock_guard<std::recursive_mutex> lock(mLock); 1771 1772 const char* apk_path = apkPath.c_str(); 1773 const char* instruction_set = instructionSet.c_str(); 1774 const char* oat_dir = outputPath.c_str(); 1775 1776 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1777 return res ? ok() : error(); 1778} 1779 1780} // namespace installd 1781} // namespace android 1782