InstalldNativeService.cpp revision c9e55782b05366bfcda975c2f5e4b80632b8c884
1/* 2** Copyright 2008, The Android Open Source Project 3** 4** Licensed under the Apache License, Version 2.0 (the "License"); 5** you may not use this file except in compliance with the License. 6** You may obtain a copy of the License at 7** 8** http://www.apache.org/licenses/LICENSE-2.0 9** 10** Unless required by applicable law or agreed to in writing, software 11** distributed under the License is distributed on an "AS IS" BASIS, 12** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13** See the License for the specific language governing permissions and 14** limitations under the License. 15*/ 16 17#include "InstalldNativeService.h" 18 19#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER 20 21#include <errno.h> 22#include <inttypes.h> 23#include <fstream> 24#include <fts.h> 25#include <regex> 26#include <stdlib.h> 27#include <string.h> 28#include <sys/capability.h> 29#include <sys/file.h> 30#include <sys/resource.h> 31#include <sys/quota.h> 32#include <sys/stat.h> 33#include <sys/statvfs.h> 34#include <sys/types.h> 35#include <sys/wait.h> 36#include <sys/xattr.h> 37#include <unistd.h> 38 39#include <android-base/logging.h> 40#include <android-base/stringprintf.h> 41#include <android-base/strings.h> 42#include <android-base/unique_fd.h> 43#include <cutils/fs.h> 44#include <cutils/properties.h> 45#include <cutils/sched_policy.h> 46#include <log/log.h> // TODO: Move everything to base/logging. 47#include <logwrap/logwrap.h> 48#include <private/android_filesystem_config.h> 49#include <selinux/android.h> 50#include <system/thread_defs.h> 51#include <utils/Trace.h> 52 53#include "dexopt.h" 54#include "globals.h" 55#include "installd_deps.h" 56#include "otapreopt_utils.h" 57#include "utils.h" 58 59#include "CacheTracker.h" 60#include "MatchExtensionGen.h" 61 62#ifndef LOG_TAG 63#define LOG_TAG "installd" 64#endif 65 66using android::base::StringPrintf; 67using std::endl; 68 69namespace android { 70namespace installd { 71 72static constexpr const char* kCpPath = "/system/bin/cp"; 73static constexpr const char* kXattrDefault = "user.default"; 74 75static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 76 77static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 78static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 79static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 80 81static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 82static constexpr const char* IDMAP_SUFFIX = "@idmap"; 83 84// NOTE: keep in sync with Installer 85static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 86static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 87static constexpr int FLAG_USE_QUOTA = 1 << 12; 88static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13; 89static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14; 90static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15; 91 92namespace { 93 94constexpr const char* kDump = "android.permission.DUMP"; 95 96static binder::Status ok() { 97 return binder::Status::ok(); 98} 99 100static binder::Status exception(uint32_t code, const std::string& msg) { 101 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 102} 103 104static binder::Status error() { 105 return binder::Status::fromServiceSpecificError(errno); 106} 107 108static binder::Status error(const std::string& msg) { 109 PLOG(ERROR) << msg; 110 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 111} 112 113static binder::Status error(uint32_t code, const std::string& msg) { 114 LOG(ERROR) << msg << " (" << code << ")"; 115 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 116} 117 118binder::Status checkPermission(const char* permission) { 119 pid_t pid; 120 uid_t uid; 121 122 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 123 reinterpret_cast<int32_t*>(&uid))) { 124 return ok(); 125 } else { 126 return exception(binder::Status::EX_SECURITY, 127 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 128 } 129} 130 131binder::Status checkUid(uid_t expectedUid) { 132 uid_t uid = IPCThreadState::self()->getCallingUid(); 133 if (uid == expectedUid || uid == AID_ROOT) { 134 return ok(); 135 } else { 136 return exception(binder::Status::EX_SECURITY, 137 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 138 } 139} 140 141binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 142 if (!uuid || is_valid_filename(*uuid)) { 143 return ok(); 144 } else { 145 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 146 StringPrintf("UUID %s is malformed", uuid->c_str())); 147 } 148} 149 150binder::Status checkArgumentPackageName(const std::string& packageName) { 151 if (is_valid_package_name(packageName.c_str())) { 152 return ok(); 153 } else { 154 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 155 StringPrintf("Package name %s is malformed", packageName.c_str())); 156 } 157} 158 159#define ENFORCE_UID(uid) { \ 160 binder::Status status = checkUid((uid)); \ 161 if (!status.isOk()) { \ 162 return status; \ 163 } \ 164} 165 166#define CHECK_ARGUMENT_UUID(uuid) { \ 167 binder::Status status = checkArgumentUuid((uuid)); \ 168 if (!status.isOk()) { \ 169 return status; \ 170 } \ 171} 172 173#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 174 binder::Status status = \ 175 checkArgumentPackageName((packageName)); \ 176 if (!status.isOk()) { \ 177 return status; \ 178 } \ 179} 180 181} // namespace 182 183status_t InstalldNativeService::start() { 184 IPCThreadState::self()->disableBackgroundScheduling(true); 185 status_t ret = BinderService<InstalldNativeService>::publish(); 186 if (ret != android::OK) { 187 return ret; 188 } 189 sp<ProcessState> ps(ProcessState::self()); 190 ps->startThreadPool(); 191 ps->giveThreadPoolName(); 192 return android::OK; 193} 194 195status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 196 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 197 const binder::Status dump_permission = checkPermission(kDump); 198 if (!dump_permission.isOk()) { 199 out << dump_permission.toString8() << endl; 200 return PERMISSION_DENIED; 201 } 202 std::lock_guard<std::recursive_mutex> lock(mLock); 203 204 out << "installd is happy!" << endl; 205 206 out << endl << "Devices with quota support:" << endl; 207 for (const auto& n : mQuotaDevices) { 208 out << " " << n.first << " = " << n.second << endl; 209 } 210 211 out << endl << "Per-UID cache quotas:" << endl; 212 for (const auto& n : mCacheQuotas) { 213 out << " " << n.first << " = " << n.second << endl; 214 } 215 216 out << endl; 217 out.flush(); 218 219 return NO_ERROR; 220} 221 222/** 223 * Perform restorecon of the given path, but only perform recursive restorecon 224 * if the label of that top-level file actually changed. This can save us 225 * significant time by avoiding no-op traversals of large filesystem trees. 226 */ 227static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 228 bool existing) { 229 int res = 0; 230 char* before = nullptr; 231 char* after = nullptr; 232 233 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 234 // libselinux. Not needed here. 235 236 if (lgetfilecon(path.c_str(), &before) < 0) { 237 PLOG(ERROR) << "Failed before getfilecon for " << path; 238 goto fail; 239 } 240 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 241 PLOG(ERROR) << "Failed top-level restorecon for " << path; 242 goto fail; 243 } 244 if (lgetfilecon(path.c_str(), &after) < 0) { 245 PLOG(ERROR) << "Failed after getfilecon for " << path; 246 goto fail; 247 } 248 249 // If the initial top-level restorecon above changed the label, then go 250 // back and restorecon everything recursively 251 if (strcmp(before, after)) { 252 if (existing) { 253 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 254 << path << "; running recursive restorecon"; 255 } 256 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 257 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 258 PLOG(ERROR) << "Failed recursive restorecon for " << path; 259 goto fail; 260 } 261 } 262 263 goto done; 264fail: 265 res = -1; 266done: 267 free(before); 268 free(after); 269 return res; 270} 271 272static int restorecon_app_data_lazy(const std::string& parent, const char* name, 273 const std::string& seInfo, uid_t uid, bool existing) { 274 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 275 existing); 276} 277 278static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 279 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 280 PLOG(ERROR) << "Failed to prepare " << path; 281 return -1; 282 } 283 return 0; 284} 285 286binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 287 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 288 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 289 ENFORCE_UID(AID_SYSTEM); 290 CHECK_ARGUMENT_UUID(uuid); 291 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 292 std::lock_guard<std::recursive_mutex> lock(mLock); 293 294 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 295 const char* pkgname = packageName.c_str(); 296 297 // Assume invalid inode unless filled in below 298 if (_aidl_return != nullptr) *_aidl_return = -1; 299 300 int32_t uid = multiuser_get_uid(userId, appId); 301 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 302 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 303 304 // If UID doesn't have a specific cache GID, use UID value 305 if (cacheGid == -1) { 306 cacheGid = uid; 307 } 308 309 if (flags & FLAG_STORAGE_CE) { 310 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 311 bool existing = (access(path.c_str(), F_OK) == 0); 312 313 if (prepare_app_dir(path, targetMode, uid) || 314 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 315 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 316 return error("Failed to prepare " + path); 317 } 318 319 // Consider restorecon over contents if label changed 320 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 321 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 322 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 323 return error("Failed to restorecon " + path); 324 } 325 326 // Remember inode numbers of cache directories so that we can clear 327 // contents while CE storage is locked 328 if (write_path_inode(path, "cache", kXattrInodeCache) || 329 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 330 return error("Failed to write_path_inode for " + path); 331 } 332 333 // And return the CE inode of the top-level data directory so we can 334 // clear contents while CE storage is locked 335 if ((_aidl_return != nullptr) 336 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 337 return error("Failed to get_path_inode for " + path); 338 } 339 } 340 if (flags & FLAG_STORAGE_DE) { 341 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 342 bool existing = (access(path.c_str(), F_OK) == 0); 343 344 if (prepare_app_dir(path, targetMode, uid) || 345 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 346 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 347 return error("Failed to prepare " + path); 348 } 349 350 // Consider restorecon over contents if label changed 351 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 352 return error("Failed to restorecon " + path); 353 } 354 355 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 356 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 357 // read-write-execute only for the app user. 358 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 359 return error("Failed to prepare " + profile_path); 360 } 361 std::string profile_file = create_primary_profile(profile_path); 362 // read-write only for the app user. 363 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 364 return error("Failed to prepare " + profile_path); 365 } 366 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 367 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 368 // profiles. 369 int shared_app_gid = multiuser_get_shared_gid(0, appId); 370 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 371 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 372 return error("Failed to prepare " + ref_profile_path); 373 } 374 } 375 } 376 return ok(); 377} 378 379binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 380 const std::string& packageName, int32_t userId, int32_t flags) { 381 ENFORCE_UID(AID_SYSTEM); 382 CHECK_ARGUMENT_UUID(uuid); 383 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 384 std::lock_guard<std::recursive_mutex> lock(mLock); 385 386 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 387 const char* pkgname = packageName.c_str(); 388 389 // This method only exists to upgrade system apps that have requested 390 // forceDeviceEncrypted, so their default storage always lives in a 391 // consistent location. This only works on non-FBE devices, since we 392 // never want to risk exposing data on a device with real CE/DE storage. 393 394 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 395 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 396 397 // If neither directory is marked as default, assume CE is default 398 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 399 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 400 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 401 return error("Failed to mark default storage " + ce_path); 402 } 403 } 404 405 // Migrate default data location if needed 406 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 407 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 408 409 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 410 LOG(WARNING) << "Requested default storage " << target 411 << " is not active; migrating from " << source; 412 if (delete_dir_contents_and_dir(target) != 0) { 413 return error("Failed to delete " + target); 414 } 415 if (rename(source.c_str(), target.c_str()) != 0) { 416 return error("Failed to rename " + source + " to " + target); 417 } 418 } 419 420 return ok(); 421} 422 423 424binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 425 ENFORCE_UID(AID_SYSTEM); 426 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 427 std::lock_guard<std::recursive_mutex> lock(mLock); 428 429 const char* pkgname = packageName.c_str(); 430 binder::Status res = ok(); 431 if (!clear_reference_profile(pkgname)) { 432 res = error("Failed to clear reference profile for " + packageName); 433 } 434 if (!clear_current_profiles(pkgname)) { 435 res = error("Failed to clear current profiles for " + packageName); 436 } 437 return res; 438} 439 440binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 441 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 442 ENFORCE_UID(AID_SYSTEM); 443 CHECK_ARGUMENT_UUID(uuid); 444 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 445 std::lock_guard<std::recursive_mutex> lock(mLock); 446 447 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 448 const char* pkgname = packageName.c_str(); 449 450 binder::Status res = ok(); 451 if (flags & FLAG_STORAGE_CE) { 452 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 453 if (flags & FLAG_CLEAR_CACHE_ONLY) { 454 path = read_path_inode(path, "cache", kXattrInodeCache); 455 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 456 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 457 } 458 if (access(path.c_str(), F_OK) == 0) { 459 if (delete_dir_contents(path) != 0) { 460 res = error("Failed to delete contents of " + path); 461 } 462 } 463 } 464 if (flags & FLAG_STORAGE_DE) { 465 std::string suffix = ""; 466 bool only_cache = false; 467 if (flags & FLAG_CLEAR_CACHE_ONLY) { 468 suffix = CACHE_DIR_POSTFIX; 469 only_cache = true; 470 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 471 suffix = CODE_CACHE_DIR_POSTFIX; 472 only_cache = true; 473 } 474 475 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 476 if (access(path.c_str(), F_OK) == 0) { 477 if (delete_dir_contents(path) != 0) { 478 res = error("Failed to delete contents of " + path); 479 } 480 } 481 if (!only_cache) { 482 if (!clear_current_profile(pkgname, userId)) { 483 res = error("Failed to clear current profile for " + packageName); 484 } 485 } 486 } 487 return res; 488} 489 490static int destroy_app_reference_profile(const char *pkgname) { 491 return delete_dir_contents_and_dir( 492 create_data_ref_profile_package_path(pkgname), 493 /*ignore_if_missing*/ true); 494} 495 496static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 497 return delete_dir_contents_and_dir( 498 create_data_user_profile_package_path(userid, pkgname), 499 /*ignore_if_missing*/ true); 500} 501 502binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 503 ENFORCE_UID(AID_SYSTEM); 504 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 505 std::lock_guard<std::recursive_mutex> lock(mLock); 506 507 const char* pkgname = packageName.c_str(); 508 binder::Status res = ok(); 509 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 510 for (auto user : users) { 511 if (destroy_app_current_profiles(pkgname, user) != 0) { 512 res = error("Failed to destroy current profiles for " + packageName); 513 } 514 } 515 if (destroy_app_reference_profile(pkgname) != 0) { 516 res = error("Failed to destroy reference profile for " + packageName); 517 } 518 return res; 519} 520 521binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 522 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 523 ENFORCE_UID(AID_SYSTEM); 524 CHECK_ARGUMENT_UUID(uuid); 525 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 526 std::lock_guard<std::recursive_mutex> lock(mLock); 527 528 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 529 const char* pkgname = packageName.c_str(); 530 531 binder::Status res = ok(); 532 if (flags & FLAG_STORAGE_CE) { 533 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 534 if (delete_dir_contents_and_dir(path) != 0) { 535 res = error("Failed to delete " + path); 536 } 537 } 538 if (flags & FLAG_STORAGE_DE) { 539 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 540 if (delete_dir_contents_and_dir(path) != 0) { 541 res = error("Failed to delete " + path); 542 } 543 destroy_app_current_profiles(pkgname, userId); 544 // TODO(calin): If the package is still installed by other users it's probably 545 // beneficial to keep the reference profile around. 546 // Verify if it's ok to do that. 547 destroy_app_reference_profile(pkgname); 548 } 549 return res; 550} 551 552binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 553 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 554 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 555 int32_t targetSdkVersion) { 556 ENFORCE_UID(AID_SYSTEM); 557 CHECK_ARGUMENT_UUID(fromUuid); 558 CHECK_ARGUMENT_UUID(toUuid); 559 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 560 std::lock_guard<std::recursive_mutex> lock(mLock); 561 562 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 563 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 564 const char* package_name = packageName.c_str(); 565 const char* data_app_name = dataAppName.c_str(); 566 567 binder::Status res = ok(); 568 std::vector<userid_t> users = get_known_users(from_uuid); 569 570 // Copy app 571 { 572 auto from = create_data_app_package_path(from_uuid, data_app_name); 573 auto to = create_data_app_package_path(to_uuid, data_app_name); 574 auto to_parent = create_data_app_path(to_uuid); 575 576 char *argv[] = { 577 (char*) kCpPath, 578 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 579 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 580 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 581 (char*) "-P", /* Do not follow symlinks [default] */ 582 (char*) "-d", /* don't dereference symlinks */ 583 (char*) from.c_str(), 584 (char*) to_parent.c_str() 585 }; 586 587 LOG(DEBUG) << "Copying " << from << " to " << to; 588 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 589 if (rc != 0) { 590 res = error(rc, "Failed copying " + from + " to " + to); 591 goto fail; 592 } 593 594 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 595 res = error("Failed to restorecon " + to); 596 goto fail; 597 } 598 } 599 600 // Copy private data for all known users 601 for (auto user : users) { 602 603 // Data source may not exist for all users; that's okay 604 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 605 if (access(from_ce.c_str(), F_OK) != 0) { 606 LOG(INFO) << "Missing source " << from_ce; 607 continue; 608 } 609 610 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 611 seInfo, targetSdkVersion, nullptr).isOk()) { 612 res = error("Failed to create package target"); 613 goto fail; 614 } 615 616 char *argv[] = { 617 (char*) kCpPath, 618 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 619 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 620 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 621 (char*) "-P", /* Do not follow symlinks [default] */ 622 (char*) "-d", /* don't dereference symlinks */ 623 nullptr, 624 nullptr 625 }; 626 627 { 628 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 629 auto to = create_data_user_de_path(to_uuid, user); 630 argv[6] = (char*) from.c_str(); 631 argv[7] = (char*) to.c_str(); 632 633 LOG(DEBUG) << "Copying " << from << " to " << to; 634 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 635 if (rc != 0) { 636 res = error(rc, "Failed copying " + from + " to " + to); 637 goto fail; 638 } 639 } 640 { 641 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 642 auto to = create_data_user_ce_path(to_uuid, user); 643 argv[6] = (char*) from.c_str(); 644 argv[7] = (char*) to.c_str(); 645 646 LOG(DEBUG) << "Copying " << from << " to " << to; 647 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 648 if (rc != 0) { 649 res = error(rc, "Failed copying " + from + " to " + to); 650 goto fail; 651 } 652 } 653 654 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 655 appId, seInfo).isOk()) { 656 res = error("Failed to restorecon"); 657 goto fail; 658 } 659 } 660 661 // We let the framework scan the new location and persist that before 662 // deleting the data in the old location; this ordering ensures that 663 // we can recover from things like battery pulls. 664 return ok(); 665 666fail: 667 // Nuke everything we might have already copied 668 { 669 auto to = create_data_app_package_path(to_uuid, data_app_name); 670 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 671 LOG(WARNING) << "Failed to rollback " << to; 672 } 673 } 674 for (auto user : users) { 675 { 676 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 677 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 678 LOG(WARNING) << "Failed to rollback " << to; 679 } 680 } 681 { 682 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 683 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 684 LOG(WARNING) << "Failed to rollback " << to; 685 } 686 } 687 } 688 return res; 689} 690 691binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 692 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 693 ENFORCE_UID(AID_SYSTEM); 694 CHECK_ARGUMENT_UUID(uuid); 695 std::lock_guard<std::recursive_mutex> lock(mLock); 696 697 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 698 if (flags & FLAG_STORAGE_DE) { 699 if (uuid_ == nullptr) { 700 if (ensure_config_user_dirs(userId) != 0) { 701 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 702 } 703 } 704 } 705 return ok(); 706} 707 708binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 709 int32_t userId, int32_t flags) { 710 ENFORCE_UID(AID_SYSTEM); 711 CHECK_ARGUMENT_UUID(uuid); 712 std::lock_guard<std::recursive_mutex> lock(mLock); 713 714 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 715 binder::Status res = ok(); 716 if (flags & FLAG_STORAGE_DE) { 717 auto path = create_data_user_de_path(uuid_, userId); 718 if (delete_dir_contents_and_dir(path, true) != 0) { 719 res = error("Failed to delete " + path); 720 } 721 if (uuid_ == nullptr) { 722 path = create_data_misc_legacy_path(userId); 723 if (delete_dir_contents_and_dir(path, true) != 0) { 724 res = error("Failed to delete " + path); 725 } 726 path = create_data_user_profile_path(userId); 727 if (delete_dir_contents_and_dir(path, true) != 0) { 728 res = error("Failed to delete " + path); 729 } 730 } 731 } 732 if (flags & FLAG_STORAGE_CE) { 733 auto path = create_data_user_ce_path(uuid_, userId); 734 if (delete_dir_contents_and_dir(path, true) != 0) { 735 res = error("Failed to delete " + path); 736 } 737 path = create_data_media_path(uuid_, userId); 738 if (delete_dir_contents_and_dir(path, true) != 0) { 739 res = error("Failed to delete " + path); 740 } 741 } 742 return res; 743} 744 745/* Try to ensure free_size bytes of storage are available. 746 * Returns 0 on success. 747 * This is rather simple-minded because doing a full LRU would 748 * be potentially memory-intensive, and without atime it would 749 * also require that apps constantly modify file metadata even 750 * when just reading from the cache, which is pretty awful. 751 */ 752binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 753 int64_t freeStorageSize, int32_t flags) { 754 ENFORCE_UID(AID_SYSTEM); 755 CHECK_ARGUMENT_UUID(uuid); 756 std::lock_guard<std::recursive_mutex> lock(mLock); 757 758 // TODO: remove this once framework is more robust 759 invalidateMounts(); 760 761 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 762 auto data_path = create_data_path(uuid_); 763 auto device = findQuotaDeviceForUuid(uuid); 764 auto noop = (flags & FLAG_FREE_CACHE_NOOP); 765 766 int64_t free = data_disk_free(data_path); 767 int64_t needed = freeStorageSize - free; 768 if (free < 0) { 769 return error("Failed to determine free space for " + data_path); 770 } else if (free >= freeStorageSize) { 771 return ok(); 772 } 773 774 LOG(DEBUG) << "Found " << data_path << " with " << free << " free; caller requested " 775 << freeStorageSize; 776 777 if (flags & FLAG_FREE_CACHE_V2) { 778 // This new cache strategy fairly removes files from UIDs by deleting 779 // files from the UIDs which are most over their allocated quota 780 781 // 1. Create trackers for every known UID 782 ATRACE_BEGIN("create"); 783 std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; 784 for (auto user : get_known_users(uuid_)) { 785 FTS *fts; 786 FTSENT *p; 787 char *argv[] = { 788 (char*) create_data_user_ce_path(uuid_, user).c_str(), 789 (char*) create_data_user_de_path(uuid_, user).c_str(), 790 nullptr 791 }; 792 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 793 return error("Failed to fts_open"); 794 } 795 while ((p = fts_read(fts)) != NULL) { 796 if (p->fts_info == FTS_D && p->fts_level == 1) { 797 uid_t uid = p->fts_statp->st_uid; 798 auto search = trackers.find(uid); 799 if (search != trackers.end()) { 800 search->second->addDataPath(p->fts_path); 801 } else { 802 auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( 803 multiuser_get_user_id(uid), multiuser_get_app_id(uid), device)); 804 tracker->addDataPath(p->fts_path); 805 tracker->cacheQuota = mCacheQuotas[uid]; 806 if (tracker->cacheQuota == 0) { 807 LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; 808 tracker->cacheQuota = 67108864; 809 } 810 trackers[uid] = tracker; 811 } 812 fts_set(fts, p, FTS_SKIP); 813 } 814 } 815 fts_close(fts); 816 } 817 ATRACE_END(); 818 819 // 2. Populate tracker stats and insert into priority queue 820 ATRACE_BEGIN("populate"); 821 auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { 822 return (left->getCacheRatio() < right->getCacheRatio()); 823 }; 824 std::priority_queue<std::shared_ptr<CacheTracker>, 825 std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); 826 for (const auto& it : trackers) { 827 it.second->loadStats(); 828 queue.push(it.second); 829 } 830 ATRACE_END(); 831 832 // 3. Bounce across the queue, freeing items from whichever tracker is 833 // the most over their assigned quota 834 ATRACE_BEGIN("bounce"); 835 std::shared_ptr<CacheTracker> active; 836 while (active || !queue.empty()) { 837 // Only look at apps under quota when explicitly requested 838 if (active && (active->getCacheRatio() < 10000) 839 && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) { 840 LOG(DEBUG) << "Active ratio " << active->getCacheRatio() 841 << " isn't over quota, and defy not requested"; 842 break; 843 } 844 845 // Find the best tracker to work with; this might involve swapping 846 // if the active tracker is no longer the most over quota 847 bool nextBetter = active && !queue.empty() 848 && active->getCacheRatio() < queue.top()->getCacheRatio(); 849 if (!active || nextBetter) { 850 if (active) { 851 // Current tracker still has items, so we'll consider it 852 // again later once it bubbles up to surface 853 queue.push(active); 854 } 855 active = queue.top(); queue.pop(); 856 active->ensureItems(); 857 continue; 858 } 859 860 // If no items remain, go find another tracker 861 if (active->items.empty()) { 862 active = nullptr; 863 continue; 864 } else { 865 auto item = active->items.back(); 866 active->items.pop_back(); 867 868 LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); 869 if (!noop) { 870 item->purge(); 871 } 872 active->cacheUsed -= item->size; 873 needed -= item->size; 874 } 875 876 // Verify that we're actually done before bailing, since sneaky 877 // apps might be using hardlinks 878 if (needed <= 0) { 879 free = data_disk_free(data_path); 880 needed = freeStorageSize - free; 881 if (needed <= 0) { 882 break; 883 } else { 884 LOG(WARNING) << "Expected to be done but still need " << needed; 885 } 886 } 887 } 888 ATRACE_END(); 889 890 } else { 891 ATRACE_BEGIN("start"); 892 cache_t* cache = start_cache_collection(); 893 ATRACE_END(); 894 895 ATRACE_BEGIN("add"); 896 for (auto user : get_known_users(uuid_)) { 897 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 898 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 899 add_cache_files(cache, 900 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 901 } 902 // Add files from /data/preloads/file_cache 903 if (uuid == nullptr) { 904 add_preloads_file_cache(cache, uuid_); 905 } 906 ATRACE_END(); 907 908 ATRACE_BEGIN("clear"); 909 clear_cache_files(data_path, cache, freeStorageSize); 910 ATRACE_END(); 911 912 ATRACE_BEGIN("finish"); 913 finish_cache_collection(cache); 914 ATRACE_END(); 915 } 916 917 free = data_disk_free(data_path); 918 if (free >= freeStorageSize) { 919 return ok(); 920 } else { 921 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 922 freeStorageSize, data_path.c_str(), free)); 923 } 924} 925 926binder::Status InstalldNativeService::rmdex(const std::string& codePath, 927 const std::string& instructionSet) { 928 ENFORCE_UID(AID_SYSTEM); 929 std::lock_guard<std::recursive_mutex> lock(mLock); 930 931 char dex_path[PKG_PATH_MAX]; 932 933 const char* path = codePath.c_str(); 934 const char* instruction_set = instructionSet.c_str(); 935 936 if (validate_apk_path(path) && validate_system_app_path(path)) { 937 return error("Invalid path " + codePath); 938 } 939 940 if (!create_cache_path(dex_path, path, instruction_set)) { 941 return error("Failed to create cache path for " + codePath); 942 } 943 944 ALOGV("unlink %s\n", dex_path); 945 if (unlink(dex_path) < 0) { 946 return error(StringPrintf("Failed to unlink %s", dex_path)); 947 } else { 948 return ok(); 949 } 950} 951 952struct stats { 953 int64_t codeSize; 954 int64_t dataSize; 955 int64_t cacheSize; 956}; 957 958#if MEASURE_DEBUG 959static std::string toString(std::vector<int64_t> values) { 960 std::stringstream res; 961 res << "["; 962 for (size_t i = 0; i < values.size(); i++) { 963 res << values[i]; 964 if (i < values.size() - 1) { 965 res << ","; 966 } 967 } 968 res << "]"; 969 return res.str(); 970} 971#endif 972 973static void collectQuotaStats(const std::string& device, int32_t userId, 974 int32_t appId, struct stats* stats, struct stats* extStats) { 975 if (device.empty()) return; 976 977 struct dqblk dq; 978 979 uid_t uid = multiuser_get_uid(userId, appId); 980 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 981 reinterpret_cast<char*>(&dq)) != 0) { 982 if (errno != ESRCH) { 983 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 984 } 985 } else { 986#if MEASURE_DEBUG 987 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 988#endif 989 stats->dataSize += dq.dqb_curspace; 990 } 991 992 int cacheGid = multiuser_get_cache_gid(userId, appId); 993 if (cacheGid != -1) { 994 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 995 reinterpret_cast<char*>(&dq)) != 0) { 996 if (errno != ESRCH) { 997 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 998 } 999 } else { 1000#if MEASURE_DEBUG 1001 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 1002#endif 1003 stats->cacheSize += dq.dqb_curspace; 1004 } 1005 } 1006 1007 int extGid = multiuser_get_ext_gid(userId, appId); 1008 if (extGid != -1) { 1009 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extGid, 1010 reinterpret_cast<char*>(&dq)) != 0) { 1011 if (errno != ESRCH) { 1012 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extGid; 1013 } 1014 } else { 1015#if MEASURE_DEBUG 1016 LOG(DEBUG) << "quotactl() for GID " << extGid << " " << dq.dqb_curspace; 1017#endif 1018 extStats->dataSize += dq.dqb_curspace; 1019 } 1020 } 1021 1022 int sharedGid = multiuser_get_shared_gid(userId, appId); 1023 if (sharedGid != -1) { 1024 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 1025 reinterpret_cast<char*>(&dq)) != 0) { 1026 if (errno != ESRCH) { 1027 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 1028 } 1029 } else { 1030#if MEASURE_DEBUG 1031 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 1032#endif 1033 stats->codeSize += dq.dqb_curspace; 1034 } 1035 } 1036} 1037 1038static void collectManualStats(const std::string& path, struct stats* stats) { 1039 DIR *d; 1040 int dfd; 1041 struct dirent *de; 1042 struct stat s; 1043 1044 d = opendir(path.c_str()); 1045 if (d == nullptr) { 1046 if (errno != ENOENT) { 1047 PLOG(WARNING) << "Failed to open " << path; 1048 } 1049 return; 1050 } 1051 dfd = dirfd(d); 1052 while ((de = readdir(d))) { 1053 const char *name = de->d_name; 1054 1055 int64_t size = 0; 1056 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 1057 size = s.st_blocks * 512; 1058 } 1059 1060 if (de->d_type == DT_DIR) { 1061 if (!strcmp(name, ".")) { 1062 // Don't recurse, but still count node size 1063 } else if (!strcmp(name, "..")) { 1064 // Don't recurse or count node size 1065 continue; 1066 } else { 1067 // Measure all children nodes 1068 size = 0; 1069 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1070 } 1071 1072 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1073 stats->cacheSize += size; 1074 } 1075 } 1076 1077 // Legacy symlink isn't owned by app 1078 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1079 continue; 1080 } 1081 1082 // Everything found inside is considered data 1083 stats->dataSize += size; 1084 } 1085 closedir(d); 1086} 1087 1088static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1089 bool exclude_apps = false) { 1090 DIR *d; 1091 int dfd; 1092 struct dirent *de; 1093 struct stat s; 1094 1095 d = opendir(path.c_str()); 1096 if (d == nullptr) { 1097 if (errno != ENOENT) { 1098 PLOG(WARNING) << "Failed to open " << path; 1099 } 1100 return; 1101 } 1102 dfd = dirfd(d); 1103 while ((de = readdir(d))) { 1104 if (de->d_type == DT_DIR) { 1105 const char *name = de->d_name; 1106 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1107 continue; 1108 } 1109 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1110 continue; 1111 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1112 continue; 1113 } else { 1114 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1115 } 1116 } 1117 } 1118 closedir(d); 1119} 1120 1121static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { 1122 FTS *fts; 1123 FTSENT *p; 1124 char *argv[] = { (char*) path.c_str(), nullptr }; 1125 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1126 PLOG(ERROR) << "Failed to fts_open " << path; 1127 return; 1128 } 1129 while ((p = fts_read(fts)) != NULL) { 1130 p->fts_number = p->fts_parent->fts_number; 1131 switch (p->fts_info) { 1132 case FTS_D: 1133 if (p->fts_level == 4 1134 && !strcmp(p->fts_name, "cache") 1135 && !strcmp(p->fts_parent->fts_parent->fts_name, "data") 1136 && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { 1137 p->fts_number = 1; 1138 } 1139 // Fall through to count the directory 1140 case FTS_DEFAULT: 1141 case FTS_F: 1142 case FTS_SL: 1143 case FTS_SLNONE: 1144 int64_t size = (p->fts_statp->st_blocks * 512); 1145 if (p->fts_number == 1) { 1146 stats->cacheSize += size; 1147 } 1148 stats->dataSize += size; 1149 break; 1150 } 1151 } 1152 fts_close(fts); 1153} 1154 1155binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1156 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1157 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1158 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1159 ENFORCE_UID(AID_SYSTEM); 1160 CHECK_ARGUMENT_UUID(uuid); 1161 for (auto packageName : packageNames) { 1162 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1163 } 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 testGetAppSize 1168 1169#if MEASURE_DEBUG 1170 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1171#endif 1172 1173 // Here's a summary of the common storage locations across the platform, 1174 // and how they're each tagged: 1175 // 1176 // /data/app/com.example UID system 1177 // /data/app/com.example/oat UID system 1178 // /data/user/0/com.example UID u0_a10 GID u0_a10 1179 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1180 // /data/media/0/foo.txt UID u0_media_rw 1181 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1182 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1183 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1184 // /data/media/obb/com.example UID system 1185 1186 struct stats stats; 1187 struct stats extStats; 1188 memset(&stats, 0, sizeof(stats)); 1189 memset(&extStats, 0, sizeof(extStats)); 1190 1191 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1192 1193 auto device = findQuotaDeviceForUuid(uuid); 1194 if (device.empty()) { 1195 flags &= ~FLAG_USE_QUOTA; 1196 } 1197 1198 ATRACE_BEGIN("obb"); 1199 for (auto packageName : packageNames) { 1200 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1201 calculate_tree_size(obbCodePath, &extStats.codeSize); 1202 } 1203 ATRACE_END(); 1204 1205 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1206 ATRACE_BEGIN("code"); 1207 for (auto codePath : codePaths) { 1208 calculate_tree_size(codePath, &stats.codeSize, -1, 1209 multiuser_get_shared_gid(userId, appId)); 1210 } 1211 ATRACE_END(); 1212 1213 ATRACE_BEGIN("quota"); 1214 collectQuotaStats(device, userId, appId, &stats, &extStats); 1215 ATRACE_END(); 1216 1217 } else { 1218 ATRACE_BEGIN("code"); 1219 for (auto codePath : codePaths) { 1220 calculate_tree_size(codePath, &stats.codeSize); 1221 } 1222 ATRACE_END(); 1223 1224 for (size_t i = 0; i < packageNames.size(); i++) { 1225 const char* pkgname = packageNames[i].c_str(); 1226 1227 ATRACE_BEGIN("data"); 1228 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1229 collectManualStats(cePath, &stats); 1230 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1231 collectManualStats(dePath, &stats); 1232 ATRACE_END(); 1233 1234 ATRACE_BEGIN("profiles"); 1235 auto userProfilePath = create_data_user_profile_package_path(userId, pkgname); 1236 calculate_tree_size(userProfilePath, &stats.dataSize); 1237 auto refProfilePath = create_data_ref_profile_package_path(pkgname); 1238 calculate_tree_size(refProfilePath, &stats.codeSize); 1239 ATRACE_END(); 1240 1241 ATRACE_BEGIN("external"); 1242 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1243 collectManualStats(extPath, &extStats); 1244 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1245 calculate_tree_size(mediaPath, &extStats.dataSize); 1246 ATRACE_END(); 1247 } 1248 1249 ATRACE_BEGIN("dalvik"); 1250 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1251 if (sharedGid != -1) { 1252 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1253 sharedGid, -1); 1254 } 1255 calculate_tree_size(create_data_user_profile_path(userId), &stats.dataSize, 1256 multiuser_get_uid(userId, appId), -1); 1257 ATRACE_END(); 1258 } 1259 1260 std::vector<int64_t> ret; 1261 ret.push_back(stats.codeSize); 1262 ret.push_back(stats.dataSize); 1263 ret.push_back(stats.cacheSize); 1264 ret.push_back(extStats.codeSize); 1265 ret.push_back(extStats.dataSize); 1266 ret.push_back(extStats.cacheSize); 1267#if MEASURE_DEBUG 1268 LOG(DEBUG) << "Final result " << toString(ret); 1269#endif 1270 *_aidl_return = ret; 1271 return ok(); 1272} 1273 1274binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1275 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1276 std::vector<int64_t>* _aidl_return) { 1277 ENFORCE_UID(AID_SYSTEM); 1278 CHECK_ARGUMENT_UUID(uuid); 1279 std::lock_guard<std::recursive_mutex> lock(mLock); 1280 1281 // When modifying this logic, always verify using tests: 1282 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1283 1284#if MEASURE_DEBUG 1285 LOG(INFO) << "Measuring user " << userId; 1286#endif 1287 1288 struct stats stats; 1289 struct stats extStats; 1290 memset(&stats, 0, sizeof(stats)); 1291 memset(&extStats, 0, sizeof(extStats)); 1292 1293 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1294 1295 auto device = findQuotaDeviceForUuid(uuid); 1296 if (device.empty()) { 1297 flags &= ~FLAG_USE_QUOTA; 1298 } 1299 1300 if (flags & FLAG_USE_QUOTA) { 1301 struct dqblk dq; 1302 1303 ATRACE_BEGIN("obb"); 1304 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), AID_MEDIA_OBB, 1305 reinterpret_cast<char*>(&dq)) != 0) { 1306 if (errno != ESRCH) { 1307 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << AID_MEDIA_OBB; 1308 } 1309 } else { 1310#if MEASURE_DEBUG 1311 LOG(DEBUG) << "quotactl() for GID " << AID_MEDIA_OBB << " " << dq.dqb_curspace; 1312#endif 1313 extStats.codeSize += dq.dqb_curspace; 1314 } 1315 ATRACE_END(); 1316 1317 ATRACE_BEGIN("code"); 1318 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1319 ATRACE_END(); 1320 1321 ATRACE_BEGIN("data"); 1322 auto cePath = create_data_user_ce_path(uuid_, userId); 1323 collectManualStatsForUser(cePath, &stats, true); 1324 auto dePath = create_data_user_de_path(uuid_, userId); 1325 collectManualStatsForUser(dePath, &stats, true); 1326 ATRACE_END(); 1327 1328 ATRACE_BEGIN("profile"); 1329 auto userProfilePath = create_data_user_profile_path(userId); 1330 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1331 auto refProfilePath = create_data_ref_profile_path(); 1332 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1333 ATRACE_END(); 1334 1335 ATRACE_BEGIN("external"); 1336 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1337 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1338 reinterpret_cast<char*>(&dq)) != 0) { 1339 if (errno != ESRCH) { 1340 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1341 } 1342 } else { 1343#if MEASURE_DEBUG 1344 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1345#endif 1346 extStats.dataSize += dq.dqb_curspace; 1347 } 1348 ATRACE_END(); 1349 1350 ATRACE_BEGIN("dalvik"); 1351 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1352 -1, -1, true); 1353 calculate_tree_size(create_data_user_profile_path(userId), &stats.dataSize, 1354 -1, -1, true); 1355 ATRACE_END(); 1356 1357 ATRACE_BEGIN("quota"); 1358 for (auto appId : appIds) { 1359 if (appId >= AID_APP_START) { 1360 collectQuotaStats(device, userId, appId, &stats, &extStats); 1361#if MEASURE_DEBUG 1362 // Sleep to make sure we don't lose logs 1363 usleep(1); 1364#endif 1365 } 1366 } 1367 ATRACE_END(); 1368 } else { 1369 ATRACE_BEGIN("obb"); 1370 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1371 calculate_tree_size(obbPath, &extStats.codeSize); 1372 ATRACE_END(); 1373 1374 ATRACE_BEGIN("code"); 1375 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1376 ATRACE_END(); 1377 1378 ATRACE_BEGIN("data"); 1379 auto cePath = create_data_user_ce_path(uuid_, userId); 1380 collectManualStatsForUser(cePath, &stats); 1381 auto dePath = create_data_user_de_path(uuid_, userId); 1382 collectManualStatsForUser(dePath, &stats); 1383 ATRACE_END(); 1384 1385 ATRACE_BEGIN("profile"); 1386 auto userProfilePath = create_data_user_profile_path(userId); 1387 calculate_tree_size(userProfilePath, &stats.dataSize); 1388 auto refProfilePath = create_data_ref_profile_path(); 1389 calculate_tree_size(refProfilePath, &stats.codeSize); 1390 ATRACE_END(); 1391 1392 ATRACE_BEGIN("external"); 1393 auto dataMediaPath = create_data_media_path(uuid_, userId); 1394 collectManualExternalStatsForUser(dataMediaPath, &extStats); 1395#if MEASURE_DEBUG 1396 LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " 1397 << extStats.cacheSize; 1398#endif 1399 ATRACE_END(); 1400 1401 ATRACE_BEGIN("dalvik"); 1402 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1403 calculate_tree_size(create_data_user_profile_path(userId), &stats.dataSize); 1404 ATRACE_END(); 1405 } 1406 1407 std::vector<int64_t> ret; 1408 ret.push_back(stats.codeSize); 1409 ret.push_back(stats.dataSize); 1410 ret.push_back(stats.cacheSize); 1411 ret.push_back(extStats.codeSize); 1412 ret.push_back(extStats.dataSize); 1413 ret.push_back(extStats.cacheSize); 1414#if MEASURE_DEBUG 1415 LOG(DEBUG) << "Final result " << toString(ret); 1416#endif 1417 *_aidl_return = ret; 1418 return ok(); 1419} 1420 1421binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1422 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1423 ENFORCE_UID(AID_SYSTEM); 1424 CHECK_ARGUMENT_UUID(uuid); 1425 std::lock_guard<std::recursive_mutex> lock(mLock); 1426 1427 // When modifying this logic, always verify using tests: 1428 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1429 1430#if MEASURE_DEBUG 1431 LOG(INFO) << "Measuring external " << userId; 1432#endif 1433 1434 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1435 1436 int64_t totalSize = 0; 1437 int64_t audioSize = 0; 1438 int64_t videoSize = 0; 1439 int64_t imageSize = 0; 1440 1441 auto device = findQuotaDeviceForUuid(uuid); 1442 if (device.empty()) { 1443 flags &= ~FLAG_USE_QUOTA; 1444 } 1445 1446 if (flags & FLAG_USE_QUOTA) { 1447 struct dqblk dq; 1448 1449 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1450 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1451 reinterpret_cast<char*>(&dq)) != 0) { 1452 if (errno != ESRCH) { 1453 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1454 } 1455 } else { 1456#if MEASURE_DEBUG 1457 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1458#endif 1459 totalSize = dq.dqb_curspace; 1460 } 1461 1462 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1463 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1464 reinterpret_cast<char*>(&dq)) == 0) { 1465#if MEASURE_DEBUG 1466 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1467#endif 1468 audioSize = dq.dqb_curspace; 1469 } 1470 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1471 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1472 reinterpret_cast<char*>(&dq)) == 0) { 1473#if MEASURE_DEBUG 1474 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1475#endif 1476 videoSize = dq.dqb_curspace; 1477 } 1478 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1479 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1480 reinterpret_cast<char*>(&dq)) == 0) { 1481#if MEASURE_DEBUG 1482 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1483#endif 1484 imageSize = dq.dqb_curspace; 1485 } 1486 } else { 1487 FTS *fts; 1488 FTSENT *p; 1489 auto path = create_data_media_path(uuid_, userId); 1490 char *argv[] = { (char*) path.c_str(), nullptr }; 1491 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1492 return error("Failed to fts_open " + path); 1493 } 1494 while ((p = fts_read(fts)) != NULL) { 1495 char* ext; 1496 int64_t size = (p->fts_statp->st_blocks * 512); 1497 switch (p->fts_info) { 1498 case FTS_F: 1499 // Only categorize files not belonging to apps 1500 if (p->fts_statp->st_gid < AID_APP_START) { 1501 ext = strrchr(p->fts_name, '.'); 1502 if (ext != nullptr) { 1503 switch (MatchExtension(++ext)) { 1504 case AID_MEDIA_AUDIO: audioSize += size; break; 1505 case AID_MEDIA_VIDEO: videoSize += size; break; 1506 case AID_MEDIA_IMAGE: imageSize += size; break; 1507 } 1508 } 1509 } 1510 // Fall through to always count against total 1511 case FTS_D: 1512 case FTS_DEFAULT: 1513 case FTS_SL: 1514 case FTS_SLNONE: 1515 totalSize += size; 1516 break; 1517 } 1518 } 1519 fts_close(fts); 1520 } 1521 1522 std::vector<int64_t> ret; 1523 ret.push_back(totalSize); 1524 ret.push_back(audioSize); 1525 ret.push_back(videoSize); 1526 ret.push_back(imageSize); 1527#if MEASURE_DEBUG 1528 LOG(DEBUG) << "Final result " << toString(ret); 1529#endif 1530 *_aidl_return = ret; 1531 return ok(); 1532} 1533 1534binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, 1535 int32_t userId, int32_t appId, int64_t cacheQuota) { 1536 ENFORCE_UID(AID_SYSTEM); 1537 CHECK_ARGUMENT_UUID(uuid); 1538 std::lock_guard<std::recursive_mutex> lock(mLock); 1539 1540 int32_t uid = multiuser_get_uid(userId, appId); 1541 mCacheQuotas[uid] = cacheQuota; 1542 1543 return ok(); 1544} 1545 1546// Dumps the contents of a profile file, using pkgname's dex files for pretty 1547// printing the result. 1548binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1549 const std::string& codePaths, bool* _aidl_return) { 1550 ENFORCE_UID(AID_SYSTEM); 1551 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1552 std::lock_guard<std::recursive_mutex> lock(mLock); 1553 1554 const char* pkgname = packageName.c_str(); 1555 const char* code_paths = codePaths.c_str(); 1556 1557 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1558 return ok(); 1559} 1560 1561// TODO: Consider returning error codes. 1562binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1563 bool* _aidl_return) { 1564 ENFORCE_UID(AID_SYSTEM); 1565 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1566 std::lock_guard<std::recursive_mutex> lock(mLock); 1567 1568 const char* pkgname = packageName.c_str(); 1569 *_aidl_return = analyse_profiles(uid, pkgname); 1570 return ok(); 1571} 1572 1573binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1574 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1575 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1576 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1577 const std::unique_ptr<std::string>& sharedLibraries) { 1578 ENFORCE_UID(AID_SYSTEM); 1579 CHECK_ARGUMENT_UUID(uuid); 1580 if (packageName && *packageName != "*") { 1581 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1582 } 1583 std::lock_guard<std::recursive_mutex> lock(mLock); 1584 1585 const char* apk_path = apkPath.c_str(); 1586 const char* pkgname = packageName ? packageName->c_str() : "*"; 1587 const char* instruction_set = instructionSet.c_str(); 1588 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1589 const char* compiler_filter = compilerFilter.c_str(); 1590 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1591 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1592 1593 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1594 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 1595 return res ? error(res, "Failed to dexopt") : ok(); 1596} 1597 1598binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1599 ENFORCE_UID(AID_SYSTEM); 1600 std::lock_guard<std::recursive_mutex> lock(mLock); 1601 1602 const char* instruction_set = instructionSet.c_str(); 1603 1604 char boot_marker_path[PKG_PATH_MAX]; 1605 sprintf(boot_marker_path, 1606 "%s/%s/%s/.booting", 1607 android_data_dir.path, 1608 DALVIK_CACHE, 1609 instruction_set); 1610 1611 ALOGV("mark_boot_complete : %s", boot_marker_path); 1612 if (unlink(boot_marker_path) != 0) { 1613 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1614 } 1615 return ok(); 1616} 1617 1618void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1619 struct stat* statbuf) 1620{ 1621 while (path[basepos] != 0) { 1622 if (path[basepos] == '/') { 1623 path[basepos] = 0; 1624 if (lstat(path, statbuf) < 0) { 1625 ALOGV("Making directory: %s\n", path); 1626 if (mkdir(path, mode) == 0) { 1627 chown(path, uid, gid); 1628 } else { 1629 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1630 } 1631 } 1632 path[basepos] = '/'; 1633 basepos++; 1634 } 1635 basepos++; 1636 } 1637} 1638 1639binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1640 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1641 const std::string& nativeLibPath32, int32_t userId) { 1642 ENFORCE_UID(AID_SYSTEM); 1643 CHECK_ARGUMENT_UUID(uuid); 1644 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1645 std::lock_guard<std::recursive_mutex> lock(mLock); 1646 1647 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1648 const char* pkgname = packageName.c_str(); 1649 const char* asecLibDir = nativeLibPath32.c_str(); 1650 struct stat s, libStat; 1651 binder::Status res = ok(); 1652 1653 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1654 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1655 1656 const char* pkgdir = _pkgdir.c_str(); 1657 const char* libsymlink = _libsymlink.c_str(); 1658 1659 if (stat(pkgdir, &s) < 0) { 1660 return error("Failed to stat " + _pkgdir); 1661 } 1662 1663 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1664 return error("Failed to chown " + _pkgdir); 1665 } 1666 1667 if (chmod(pkgdir, 0700) < 0) { 1668 res = error("Failed to chmod " + _pkgdir); 1669 goto out; 1670 } 1671 1672 if (lstat(libsymlink, &libStat) < 0) { 1673 if (errno != ENOENT) { 1674 res = error("Failed to stat " + _libsymlink); 1675 goto out; 1676 } 1677 } else { 1678 if (S_ISDIR(libStat.st_mode)) { 1679 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1680 res = error("Failed to delete " + _libsymlink); 1681 goto out; 1682 } 1683 } else if (S_ISLNK(libStat.st_mode)) { 1684 if (unlink(libsymlink) < 0) { 1685 res = error("Failed to unlink " + _libsymlink); 1686 goto out; 1687 } 1688 } 1689 } 1690 1691 if (symlink(asecLibDir, libsymlink) < 0) { 1692 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1693 goto out; 1694 } 1695 1696out: 1697 if (chmod(pkgdir, s.st_mode) < 0) { 1698 auto msg = "Failed to cleanup chmod " + _pkgdir; 1699 if (res.isOk()) { 1700 res = error(msg); 1701 } else { 1702 PLOG(ERROR) << msg; 1703 } 1704 } 1705 1706 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1707 auto msg = "Failed to cleanup chown " + _pkgdir; 1708 if (res.isOk()) { 1709 res = error(msg); 1710 } else { 1711 PLOG(ERROR) << msg; 1712 } 1713 } 1714 1715 return res; 1716} 1717 1718static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1719{ 1720 static const char *IDMAP_BIN = "/system/bin/idmap"; 1721 static const size_t MAX_INT_LEN = 32; 1722 char idmap_str[MAX_INT_LEN]; 1723 1724 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1725 1726 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1727 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1728} 1729 1730// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1731// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1732static int flatten_path(const char *prefix, const char *suffix, 1733 const char *overlay_path, char *idmap_path, size_t N) 1734{ 1735 if (overlay_path == NULL || idmap_path == NULL) { 1736 return -1; 1737 } 1738 const size_t len_overlay_path = strlen(overlay_path); 1739 // will access overlay_path + 1 further below; requires absolute path 1740 if (len_overlay_path < 2 || *overlay_path != '/') { 1741 return -1; 1742 } 1743 const size_t len_idmap_root = strlen(prefix); 1744 const size_t len_suffix = strlen(suffix); 1745 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1746 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1747 // additions below would cause overflow 1748 return -1; 1749 } 1750 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1751 return -1; 1752 } 1753 memset(idmap_path, 0, N); 1754 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1755 char *ch = idmap_path + len_idmap_root; 1756 while (*ch != '\0') { 1757 if (*ch == '/') { 1758 *ch = '@'; 1759 } 1760 ++ch; 1761 } 1762 return 0; 1763} 1764 1765binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1766 const std::string& overlayApkPath, int32_t uid) { 1767 ENFORCE_UID(AID_SYSTEM); 1768 std::lock_guard<std::recursive_mutex> lock(mLock); 1769 1770 const char* target_apk = targetApkPath.c_str(); 1771 const char* overlay_apk = overlayApkPath.c_str(); 1772 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1773 1774 int idmap_fd = -1; 1775 char idmap_path[PATH_MAX]; 1776 1777 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1778 idmap_path, sizeof(idmap_path)) == -1) { 1779 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1780 goto fail; 1781 } 1782 1783 unlink(idmap_path); 1784 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1785 if (idmap_fd < 0) { 1786 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1787 goto fail; 1788 } 1789 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1790 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1791 goto fail; 1792 } 1793 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1794 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1795 goto fail; 1796 } 1797 1798 pid_t pid; 1799 pid = fork(); 1800 if (pid == 0) { 1801 /* child -- drop privileges before continuing */ 1802 if (setgid(uid) != 0) { 1803 ALOGE("setgid(%d) failed during idmap\n", uid); 1804 exit(1); 1805 } 1806 if (setuid(uid) != 0) { 1807 ALOGE("setuid(%d) failed during idmap\n", uid); 1808 exit(1); 1809 } 1810 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1811 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1812 exit(1); 1813 } 1814 1815 run_idmap(target_apk, overlay_apk, idmap_fd); 1816 exit(1); /* only if exec call to idmap failed */ 1817 } else { 1818 int status = wait_child(pid); 1819 if (status != 0) { 1820 ALOGE("idmap failed, status=0x%04x\n", status); 1821 goto fail; 1822 } 1823 } 1824 1825 close(idmap_fd); 1826 return ok(); 1827fail: 1828 if (idmap_fd >= 0) { 1829 close(idmap_fd); 1830 unlink(idmap_path); 1831 } 1832 return error(); 1833} 1834 1835binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) { 1836 const char* overlay_apk = overlayApkPath.c_str(); 1837 char idmap_path[PATH_MAX]; 1838 1839 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1840 idmap_path, sizeof(idmap_path)) == -1) { 1841 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1842 return error(); 1843 } 1844 if (unlink(idmap_path) < 0) { 1845 ALOGE("couldn't unlink idmap file %s\n", idmap_path); 1846 return error(); 1847 } 1848 return ok(); 1849} 1850 1851binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1852 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1853 const std::string& seInfo) { 1854 ENFORCE_UID(AID_SYSTEM); 1855 CHECK_ARGUMENT_UUID(uuid); 1856 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1857 std::lock_guard<std::recursive_mutex> lock(mLock); 1858 1859 binder::Status res = ok(); 1860 1861 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1862 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1863 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1864 const char* pkgName = packageName.c_str(); 1865 const char* seinfo = seInfo.c_str(); 1866 1867 uid_t uid = multiuser_get_uid(userId, appId); 1868 if (flags & FLAG_STORAGE_CE) { 1869 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1870 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1871 res = error("restorecon failed for " + path); 1872 } 1873 } 1874 if (flags & FLAG_STORAGE_DE) { 1875 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1876 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1877 res = error("restorecon failed for " + path); 1878 } 1879 } 1880 return res; 1881} 1882 1883binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1884 const std::string& instructionSet) { 1885 ENFORCE_UID(AID_SYSTEM); 1886 std::lock_guard<std::recursive_mutex> lock(mLock); 1887 1888 const char* oat_dir = oatDir.c_str(); 1889 const char* instruction_set = instructionSet.c_str(); 1890 char oat_instr_dir[PKG_PATH_MAX]; 1891 1892 if (validate_apk_path(oat_dir)) { 1893 return error("Invalid path " + oatDir); 1894 } 1895 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1896 return error("Failed to prepare " + oatDir); 1897 } 1898 if (selinux_android_restorecon(oat_dir, 0)) { 1899 return error("Failed to restorecon " + oatDir); 1900 } 1901 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1902 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1903 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1904 } 1905 return ok(); 1906} 1907 1908binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1909 ENFORCE_UID(AID_SYSTEM); 1910 std::lock_guard<std::recursive_mutex> lock(mLock); 1911 1912 if (validate_apk_path(packageDir.c_str())) { 1913 return error("Invalid path " + packageDir); 1914 } 1915 if (delete_dir_contents_and_dir(packageDir) != 0) { 1916 return error("Failed to delete " + packageDir); 1917 } 1918 return ok(); 1919} 1920 1921binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1922 const std::string& fromBase, const std::string& toBase) { 1923 ENFORCE_UID(AID_SYSTEM); 1924 std::lock_guard<std::recursive_mutex> lock(mLock); 1925 1926 const char* relative_path = relativePath.c_str(); 1927 const char* from_base = fromBase.c_str(); 1928 const char* to_base = toBase.c_str(); 1929 char from_path[PKG_PATH_MAX]; 1930 char to_path[PKG_PATH_MAX]; 1931 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1932 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1933 1934 if (validate_apk_path_subdirs(from_path)) { 1935 return error(StringPrintf("Invalid from path %s", from_path)); 1936 } 1937 1938 if (validate_apk_path_subdirs(to_path)) { 1939 return error(StringPrintf("Invalid to path %s", to_path)); 1940 } 1941 1942 if (link(from_path, to_path) < 0) { 1943 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1944 } 1945 1946 return ok(); 1947} 1948 1949binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1950 const std::string& instructionSet, const std::string& outputPath) { 1951 ENFORCE_UID(AID_SYSTEM); 1952 std::lock_guard<std::recursive_mutex> lock(mLock); 1953 1954 const char* apk_path = apkPath.c_str(); 1955 const char* instruction_set = instructionSet.c_str(); 1956 const char* oat_dir = outputPath.c_str(); 1957 1958 bool success = move_ab(apk_path, instruction_set, oat_dir); 1959 return success ? ok() : error(); 1960} 1961 1962binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1963 const std::string& instructionSet, const std::string& outputPath) { 1964 ENFORCE_UID(AID_SYSTEM); 1965 std::lock_guard<std::recursive_mutex> lock(mLock); 1966 1967 const char* apk_path = apkPath.c_str(); 1968 const char* instruction_set = instructionSet.c_str(); 1969 const char* oat_dir = outputPath.c_str(); 1970 1971 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1972 return res ? ok() : error(); 1973} 1974 1975binder::Status InstalldNativeService::reconcileSecondaryDexFile( 1976 const std::string& dexPath, const std::string& packageName, int32_t uid, 1977 const std::vector<std::string>& isas, const std::unique_ptr<std::string>& volumeUuid, 1978 int32_t storage_flag, bool* _aidl_return) { 1979 ENFORCE_UID(AID_SYSTEM); 1980 CHECK_ARGUMENT_UUID(volumeUuid); 1981 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1982 1983 std::lock_guard<std::recursive_mutex> lock(mLock); 1984 bool result = android::installd::reconcile_secondary_dex_file( 1985 dexPath, packageName, uid, isas, volumeUuid, storage_flag, _aidl_return); 1986 return result ? ok() : error(); 1987} 1988 1989binder::Status InstalldNativeService::invalidateMounts() { 1990 ENFORCE_UID(AID_SYSTEM); 1991 std::lock_guard<std::recursive_mutex> lock(mLock); 1992 1993 mQuotaDevices.clear(); 1994 1995 std::ifstream in("/proc/mounts"); 1996 if (!in.is_open()) { 1997 return error("Failed to read mounts"); 1998 } 1999 2000 std::string source; 2001 std::string target; 2002 std::string ignored; 2003 struct dqblk dq; 2004 while (!in.eof()) { 2005 std::getline(in, source, ' '); 2006 std::getline(in, target, ' '); 2007 std::getline(in, ignored); 2008 2009 if (source.compare(0, 11, "/dev/block/") == 0) { 2010 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 2011 reinterpret_cast<char*>(&dq)) == 0) { 2012 LOG(DEBUG) << "Found " << source << " with quota"; 2013 mQuotaDevices[target] = source; 2014 } 2015 } 2016 } 2017 return ok(); 2018} 2019 2020std::string InstalldNativeService::findQuotaDeviceForUuid( 2021 const std::unique_ptr<std::string>& uuid) { 2022 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 2023 return mQuotaDevices[path]; 2024} 2025 2026binder::Status InstalldNativeService::isQuotaSupported( 2027 const std::unique_ptr<std::string>& volumeUuid, bool* _aidl_return) { 2028 *_aidl_return = !findQuotaDeviceForUuid(volumeUuid).empty(); 2029 return ok(); 2030} 2031 2032} // namespace installd 2033} // namespace android 2034