InstalldNativeService.cpp revision bb54a7df3a42d4beeb5fd99e01369415a7d1c24c
1/* 2** Copyright 2008, The Android Open Source Project 3** 4** Licensed under the Apache License, Version 2.0 (the "License"); 5** you may not use this file except in compliance with the License. 6** You may obtain a copy of the License at 7** 8** http://www.apache.org/licenses/LICENSE-2.0 9** 10** Unless required by applicable law or agreed to in writing, software 11** distributed under the License is distributed on an "AS IS" BASIS, 12** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13** See the License for the specific language governing permissions and 14** limitations under the License. 15*/ 16 17#include "InstalldNativeService.h" 18 19#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER 20 21#include <errno.h> 22#include <inttypes.h> 23#include <fstream> 24#include <fts.h> 25#include <regex> 26#include <stdlib.h> 27#include <string.h> 28#include <sys/capability.h> 29#include <sys/file.h> 30#include <sys/resource.h> 31#include <sys/quota.h> 32#include <sys/stat.h> 33#include <sys/statvfs.h> 34#include <sys/types.h> 35#include <sys/wait.h> 36#include <sys/xattr.h> 37#include <unistd.h> 38 39#include <android-base/logging.h> 40#include <android-base/stringprintf.h> 41#include <android-base/strings.h> 42#include <android-base/unique_fd.h> 43#include <cutils/fs.h> 44#include <cutils/properties.h> 45#include <cutils/sched_policy.h> 46#include <log/log.h> // TODO: Move everything to base/logging. 47#include <logwrap/logwrap.h> 48#include <private/android_filesystem_config.h> 49#include <selinux/android.h> 50#include <system/thread_defs.h> 51#include <utils/Trace.h> 52 53#include "dexopt.h" 54#include "globals.h" 55#include "installd_deps.h" 56#include "otapreopt_utils.h" 57#include "utils.h" 58 59#include "CacheTracker.h" 60#include "MatchExtensionGen.h" 61 62#ifndef LOG_TAG 63#define LOG_TAG "installd" 64#endif 65 66using android::base::StringPrintf; 67using std::endl; 68 69namespace android { 70namespace installd { 71 72static constexpr const char* kCpPath = "/system/bin/cp"; 73static constexpr const char* kXattrDefault = "user.default"; 74 75static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 76 77static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 78static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 79static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 80 81static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 82static constexpr const char* IDMAP_SUFFIX = "@idmap"; 83 84// NOTE: keep in sync with Installer 85static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 86static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 87static constexpr int FLAG_USE_QUOTA = 1 << 12; 88static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13; 89static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14; 90static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15; 91static constexpr int FLAG_FORCE = 1 << 16; 92 93namespace { 94 95constexpr const char* kDump = "android.permission.DUMP"; 96 97static binder::Status ok() { 98 return binder::Status::ok(); 99} 100 101static binder::Status exception(uint32_t code, const std::string& msg) { 102 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 103} 104 105static binder::Status error() { 106 return binder::Status::fromServiceSpecificError(errno); 107} 108 109static binder::Status error(const std::string& msg) { 110 PLOG(ERROR) << msg; 111 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 112} 113 114static binder::Status error(uint32_t code, const std::string& msg) { 115 LOG(ERROR) << msg << " (" << code << ")"; 116 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 117} 118 119binder::Status checkPermission(const char* permission) { 120 pid_t pid; 121 uid_t uid; 122 123 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 124 reinterpret_cast<int32_t*>(&uid))) { 125 return ok(); 126 } else { 127 return exception(binder::Status::EX_SECURITY, 128 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 129 } 130} 131 132binder::Status checkUid(uid_t expectedUid) { 133 uid_t uid = IPCThreadState::self()->getCallingUid(); 134 if (uid == expectedUid || uid == AID_ROOT) { 135 return ok(); 136 } else { 137 return exception(binder::Status::EX_SECURITY, 138 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 139 } 140} 141 142binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 143 if (!uuid || is_valid_filename(*uuid)) { 144 return ok(); 145 } else { 146 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 147 StringPrintf("UUID %s is malformed", uuid->c_str())); 148 } 149} 150 151binder::Status checkArgumentPackageName(const std::string& packageName) { 152 if (is_valid_package_name(packageName.c_str())) { 153 return ok(); 154 } else { 155 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 156 StringPrintf("Package name %s is malformed", packageName.c_str())); 157 } 158} 159 160#define ENFORCE_UID(uid) { \ 161 binder::Status status = checkUid((uid)); \ 162 if (!status.isOk()) { \ 163 return status; \ 164 } \ 165} 166 167#define CHECK_ARGUMENT_UUID(uuid) { \ 168 binder::Status status = checkArgumentUuid((uuid)); \ 169 if (!status.isOk()) { \ 170 return status; \ 171 } \ 172} 173 174#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 175 binder::Status status = \ 176 checkArgumentPackageName((packageName)); \ 177 if (!status.isOk()) { \ 178 return status; \ 179 } \ 180} 181 182} // namespace 183 184status_t InstalldNativeService::start() { 185 IPCThreadState::self()->disableBackgroundScheduling(true); 186 status_t ret = BinderService<InstalldNativeService>::publish(); 187 if (ret != android::OK) { 188 return ret; 189 } 190 sp<ProcessState> ps(ProcessState::self()); 191 ps->startThreadPool(); 192 ps->giveThreadPoolName(); 193 return android::OK; 194} 195 196status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 197 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 198 const binder::Status dump_permission = checkPermission(kDump); 199 if (!dump_permission.isOk()) { 200 out << dump_permission.toString8() << endl; 201 return PERMISSION_DENIED; 202 } 203 std::lock_guard<std::recursive_mutex> lock(mLock); 204 205 out << "installd is happy!" << endl; 206 207 { 208 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 209 out << endl << "Devices with quota support:" << endl; 210 for (const auto& n : mQuotaDevices) { 211 out << " " << n.first << " = " << n.second << endl; 212 } 213 } 214 215 { 216 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 217 out << endl << "Per-UID cache quotas:" << endl; 218 for (const auto& n : mCacheQuotas) { 219 out << " " << n.first << " = " << n.second << endl; 220 } 221 } 222 223 out << endl; 224 out.flush(); 225 226 return NO_ERROR; 227} 228 229/** 230 * Perform restorecon of the given path, but only perform recursive restorecon 231 * if the label of that top-level file actually changed. This can save us 232 * significant time by avoiding no-op traversals of large filesystem trees. 233 */ 234static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 235 bool existing) { 236 int res = 0; 237 char* before = nullptr; 238 char* after = nullptr; 239 240 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 241 // libselinux. Not needed here. 242 243 if (lgetfilecon(path.c_str(), &before) < 0) { 244 PLOG(ERROR) << "Failed before getfilecon for " << path; 245 goto fail; 246 } 247 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 248 PLOG(ERROR) << "Failed top-level restorecon for " << path; 249 goto fail; 250 } 251 if (lgetfilecon(path.c_str(), &after) < 0) { 252 PLOG(ERROR) << "Failed after getfilecon for " << path; 253 goto fail; 254 } 255 256 // If the initial top-level restorecon above changed the label, then go 257 // back and restorecon everything recursively 258 if (strcmp(before, after)) { 259 if (existing) { 260 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 261 << path << "; running recursive restorecon"; 262 } 263 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 264 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 265 PLOG(ERROR) << "Failed recursive restorecon for " << path; 266 goto fail; 267 } 268 } 269 270 goto done; 271fail: 272 res = -1; 273done: 274 free(before); 275 free(after); 276 return res; 277} 278 279static int restorecon_app_data_lazy(const std::string& parent, const char* name, 280 const std::string& seInfo, uid_t uid, bool existing) { 281 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 282 existing); 283} 284 285static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 286 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 287 PLOG(ERROR) << "Failed to prepare " << path; 288 return -1; 289 } 290 return 0; 291} 292 293/** 294 * Ensure that we have a hard-limit quota to protect against abusive apps; 295 * they should never use more than 90% of blocks or 50% of inodes. 296 */ 297static int prepare_app_quota(const std::unique_ptr<std::string>& uuid, const std::string& device, 298 uid_t uid) { 299 if (device.empty()) return 0; 300 301 struct dqblk dq; 302 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 303 reinterpret_cast<char*>(&dq)) != 0) { 304 PLOG(WARNING) << "Failed to find quota for " << uid; 305 return -1; 306 } 307 308 if ((dq.dqb_bhardlimit == 0) || (dq.dqb_ihardlimit == 0)) { 309 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 310 struct statvfs stat; 311 if (statvfs(path.c_str(), &stat) != 0) { 312 PLOG(WARNING) << "Failed to statvfs " << path; 313 return -1; 314 } 315 316 dq.dqb_valid = QIF_LIMITS; 317 dq.dqb_bhardlimit = (((stat.f_blocks * stat.f_frsize) / 10) * 9) / QIF_DQBLKSIZE; 318 dq.dqb_ihardlimit = (stat.f_files / 2); 319 if (quotactl(QCMD(Q_SETQUOTA, USRQUOTA), device.c_str(), uid, 320 reinterpret_cast<char*>(&dq)) != 0) { 321 PLOG(WARNING) << "Failed to set hard quota for " << uid; 322 return -1; 323 } else { 324 LOG(DEBUG) << "Applied hard quotas for " << uid; 325 return 0; 326 } 327 } else { 328 // Hard quota already set; assume it's reasonable 329 return 0; 330 } 331} 332 333binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 334 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 335 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 336 ENFORCE_UID(AID_SYSTEM); 337 CHECK_ARGUMENT_UUID(uuid); 338 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 339 std::lock_guard<std::recursive_mutex> lock(mLock); 340 341 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 342 const char* pkgname = packageName.c_str(); 343 344 // Assume invalid inode unless filled in below 345 if (_aidl_return != nullptr) *_aidl_return = -1; 346 347 int32_t uid = multiuser_get_uid(userId, appId); 348 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 349 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 350 351 // If UID doesn't have a specific cache GID, use UID value 352 if (cacheGid == -1) { 353 cacheGid = uid; 354 } 355 356 if (flags & FLAG_STORAGE_CE) { 357 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 358 bool existing = (access(path.c_str(), F_OK) == 0); 359 360 if (prepare_app_dir(path, targetMode, uid) || 361 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 362 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 363 return error("Failed to prepare " + path); 364 } 365 366 // Consider restorecon over contents if label changed 367 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 368 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 369 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 370 return error("Failed to restorecon " + path); 371 } 372 373 // Remember inode numbers of cache directories so that we can clear 374 // contents while CE storage is locked 375 if (write_path_inode(path, "cache", kXattrInodeCache) || 376 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 377 return error("Failed to write_path_inode for " + path); 378 } 379 380 // And return the CE inode of the top-level data directory so we can 381 // clear contents while CE storage is locked 382 if ((_aidl_return != nullptr) 383 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 384 return error("Failed to get_path_inode for " + path); 385 } 386 } 387 if (flags & FLAG_STORAGE_DE) { 388 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 389 bool existing = (access(path.c_str(), F_OK) == 0); 390 391 if (prepare_app_dir(path, targetMode, uid) || 392 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 393 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 394 return error("Failed to prepare " + path); 395 } 396 397 // Consider restorecon over contents if label changed 398 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 399 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 400 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 401 return error("Failed to restorecon " + path); 402 } 403 404 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), uid)) { 405 return error("Failed to set hard quota " + path); 406 } 407 408 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 409 const std::string profile_dir = 410 create_primary_current_profile_package_dir_path(userId, pkgname); 411 // read-write-execute only for the app user. 412 if (fs_prepare_dir_strict(profile_dir.c_str(), 0700, uid, uid) != 0) { 413 return error("Failed to prepare " + profile_dir); 414 } 415 const std::string profile_file = create_current_profile_path(userId, pkgname, 416 /*is_secondary_dex*/false); 417 // read-write only for the app user. 418 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 419 return error("Failed to prepare " + profile_file); 420 } 421 const std::string ref_profile_path = 422 create_primary_reference_profile_package_dir_path(pkgname); 423 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 424 // profiles. 425 int shared_app_gid = multiuser_get_shared_gid(0, appId); 426 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 427 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 428 return error("Failed to prepare " + ref_profile_path); 429 } 430 } 431 } 432 return ok(); 433} 434 435binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 436 const std::string& packageName, int32_t userId, int32_t flags) { 437 ENFORCE_UID(AID_SYSTEM); 438 CHECK_ARGUMENT_UUID(uuid); 439 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 440 std::lock_guard<std::recursive_mutex> lock(mLock); 441 442 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 443 const char* pkgname = packageName.c_str(); 444 445 // This method only exists to upgrade system apps that have requested 446 // forceDeviceEncrypted, so their default storage always lives in a 447 // consistent location. This only works on non-FBE devices, since we 448 // never want to risk exposing data on a device with real CE/DE storage. 449 450 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 451 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 452 453 // If neither directory is marked as default, assume CE is default 454 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 455 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 456 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 457 return error("Failed to mark default storage " + ce_path); 458 } 459 } 460 461 // Migrate default data location if needed 462 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 463 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 464 465 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 466 LOG(WARNING) << "Requested default storage " << target 467 << " is not active; migrating from " << source; 468 if (delete_dir_contents_and_dir(target) != 0) { 469 return error("Failed to delete " + target); 470 } 471 if (rename(source.c_str(), target.c_str()) != 0) { 472 return error("Failed to rename " + source + " to " + target); 473 } 474 } 475 476 return ok(); 477} 478 479 480binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 481 ENFORCE_UID(AID_SYSTEM); 482 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 483 std::lock_guard<std::recursive_mutex> lock(mLock); 484 485 binder::Status res = ok(); 486 if (!clear_primary_reference_profile(packageName)) { 487 res = error("Failed to clear reference profile for " + packageName); 488 } 489 if (!clear_primary_current_profiles(packageName)) { 490 res = error("Failed to clear current profiles for " + packageName); 491 } 492 return res; 493} 494 495binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 496 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 497 ENFORCE_UID(AID_SYSTEM); 498 CHECK_ARGUMENT_UUID(uuid); 499 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 500 std::lock_guard<std::recursive_mutex> lock(mLock); 501 502 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 503 const char* pkgname = packageName.c_str(); 504 505 binder::Status res = ok(); 506 if (flags & FLAG_STORAGE_CE) { 507 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 508 if (flags & FLAG_CLEAR_CACHE_ONLY) { 509 path = read_path_inode(path, "cache", kXattrInodeCache); 510 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 511 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 512 } 513 if (access(path.c_str(), F_OK) == 0) { 514 if (delete_dir_contents(path) != 0) { 515 res = error("Failed to delete contents of " + path); 516 } 517 } 518 } 519 if (flags & FLAG_STORAGE_DE) { 520 std::string suffix = ""; 521 bool only_cache = false; 522 if (flags & FLAG_CLEAR_CACHE_ONLY) { 523 suffix = CACHE_DIR_POSTFIX; 524 only_cache = true; 525 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 526 suffix = CODE_CACHE_DIR_POSTFIX; 527 only_cache = true; 528 } 529 530 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 531 if (access(path.c_str(), F_OK) == 0) { 532 if (delete_dir_contents(path) != 0) { 533 res = error("Failed to delete contents of " + path); 534 } 535 } 536 if (!only_cache) { 537 if (!clear_primary_current_profile(packageName, userId)) { 538 res = error("Failed to clear current profile for " + packageName); 539 } 540 } 541 } 542 return res; 543} 544 545static int destroy_app_reference_profile(const std::string& pkgname) { 546 return delete_dir_contents_and_dir( 547 create_primary_reference_profile_package_dir_path(pkgname), 548 /*ignore_if_missing*/ true); 549} 550 551static int destroy_app_current_profiles(const std::string& pkgname, userid_t userid) { 552 return delete_dir_contents_and_dir( 553 create_primary_current_profile_package_dir_path(userid, pkgname), 554 /*ignore_if_missing*/ true); 555} 556 557binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 558 ENFORCE_UID(AID_SYSTEM); 559 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 560 std::lock_guard<std::recursive_mutex> lock(mLock); 561 562 binder::Status res = ok(); 563 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 564 for (auto user : users) { 565 if (destroy_app_current_profiles(packageName, user) != 0) { 566 res = error("Failed to destroy current profiles for " + packageName); 567 } 568 } 569 if (destroy_app_reference_profile(packageName) != 0) { 570 res = error("Failed to destroy reference profile for " + packageName); 571 } 572 return res; 573} 574 575binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 576 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 577 ENFORCE_UID(AID_SYSTEM); 578 CHECK_ARGUMENT_UUID(uuid); 579 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 580 std::lock_guard<std::recursive_mutex> lock(mLock); 581 582 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 583 const char* pkgname = packageName.c_str(); 584 585 binder::Status res = ok(); 586 if (flags & FLAG_STORAGE_CE) { 587 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 588 if (delete_dir_contents_and_dir(path) != 0) { 589 res = error("Failed to delete " + path); 590 } 591 } 592 if (flags & FLAG_STORAGE_DE) { 593 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 594 if (delete_dir_contents_and_dir(path) != 0) { 595 res = error("Failed to delete " + path); 596 } 597 destroy_app_current_profiles(packageName, userId); 598 // TODO(calin): If the package is still installed by other users it's probably 599 // beneficial to keep the reference profile around. 600 // Verify if it's ok to do that. 601 destroy_app_reference_profile(packageName); 602 } 603 return res; 604} 605 606static gid_t get_cache_gid(uid_t uid) { 607 int32_t gid = multiuser_get_cache_gid(multiuser_get_user_id(uid), multiuser_get_app_id(uid)); 608 return (gid != -1) ? gid : uid; 609} 610 611binder::Status InstalldNativeService::fixupAppData(const std::unique_ptr<std::string>& uuid, 612 int32_t flags) { 613 ENFORCE_UID(AID_SYSTEM); 614 CHECK_ARGUMENT_UUID(uuid); 615 std::lock_guard<std::recursive_mutex> lock(mLock); 616 617 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 618 for (auto user : get_known_users(uuid_)) { 619 ATRACE_BEGIN("fixup user"); 620 FTS* fts; 621 FTSENT* p; 622 auto ce_path = create_data_user_ce_path(uuid_, user); 623 auto de_path = create_data_user_de_path(uuid_, user); 624 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr }; 625 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 626 return error("Failed to fts_open"); 627 } 628 while ((p = fts_read(fts)) != nullptr) { 629 if (p->fts_info == FTS_D && p->fts_level == 1) { 630 // Track down inodes of cache directories 631 uint64_t raw = 0; 632 ino_t inode_cache = 0; 633 ino_t inode_code_cache = 0; 634 if (getxattr(p->fts_path, kXattrInodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 635 inode_cache = raw; 636 } 637 if (getxattr(p->fts_path, kXattrInodeCodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 638 inode_code_cache = raw; 639 } 640 641 // Figure out expected GID of each child 642 FTSENT* child = fts_children(fts, 0); 643 while (child != nullptr) { 644 if ((child->fts_statp->st_ino == inode_cache) 645 || (child->fts_statp->st_ino == inode_code_cache) 646 || !strcmp(child->fts_name, "cache") 647 || !strcmp(child->fts_name, "code_cache")) { 648 child->fts_number = get_cache_gid(p->fts_statp->st_uid); 649 } else { 650 child->fts_number = p->fts_statp->st_uid; 651 } 652 child = child->fts_link; 653 } 654 } else if (p->fts_level >= 2) { 655 if (p->fts_level > 2) { 656 // Inherit GID from parent once we're deeper into tree 657 p->fts_number = p->fts_parent->fts_number; 658 } 659 660 uid_t uid = p->fts_parent->fts_statp->st_uid; 661 gid_t cache_gid = get_cache_gid(uid); 662 gid_t expected = p->fts_number; 663 gid_t actual = p->fts_statp->st_gid; 664 if (actual == expected) { 665#if FIXUP_DEBUG 666 LOG(DEBUG) << "Ignoring " << p->fts_path << " with expected GID " << expected; 667#endif 668 if (!(flags & FLAG_FORCE)) { 669 fts_set(fts, p, FTS_SKIP); 670 } 671 } else if ((actual == uid) || (actual == cache_gid)) { 672 // Only consider fixing up when current GID belongs to app 673 if (p->fts_info != FTS_D) { 674 LOG(INFO) << "Fixing " << p->fts_path << " with unexpected GID " << actual 675 << " instead of " << expected; 676 } 677 switch (p->fts_info) { 678 case FTS_DP: 679 // If we're moving towards cache GID, we need to set S_ISGID 680 if (expected == cache_gid) { 681 if (chmod(p->fts_path, 02771) != 0) { 682 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 683 } 684 } 685 // Intentional fall through to also set GID 686 case FTS_F: 687 if (chown(p->fts_path, -1, expected) != 0) { 688 PLOG(WARNING) << "Failed to chown " << p->fts_path; 689 } 690 break; 691 case FTS_SL: 692 case FTS_SLNONE: 693 if (lchown(p->fts_path, -1, expected) != 0) { 694 PLOG(WARNING) << "Failed to chown " << p->fts_path; 695 } 696 break; 697 } 698 } else { 699 // Ignore all other GID transitions, since they're kinda shady 700 LOG(WARNING) << "Ignoring " << p->fts_path << " with unexpected GID " << actual 701 << " instead of " << expected; 702 } 703 } 704 } 705 fts_close(fts); 706 ATRACE_END(); 707 } 708 return ok(); 709} 710 711binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 712 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 713 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 714 int32_t targetSdkVersion) { 715 ENFORCE_UID(AID_SYSTEM); 716 CHECK_ARGUMENT_UUID(fromUuid); 717 CHECK_ARGUMENT_UUID(toUuid); 718 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 719 std::lock_guard<std::recursive_mutex> lock(mLock); 720 721 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 722 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 723 const char* package_name = packageName.c_str(); 724 const char* data_app_name = dataAppName.c_str(); 725 726 binder::Status res = ok(); 727 std::vector<userid_t> users = get_known_users(from_uuid); 728 729 // Copy app 730 { 731 auto from = create_data_app_package_path(from_uuid, data_app_name); 732 auto to = create_data_app_package_path(to_uuid, data_app_name); 733 auto to_parent = create_data_app_path(to_uuid); 734 735 char *argv[] = { 736 (char*) kCpPath, 737 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 738 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 739 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 740 (char*) "-P", /* Do not follow symlinks [default] */ 741 (char*) "-d", /* don't dereference symlinks */ 742 (char*) from.c_str(), 743 (char*) to_parent.c_str() 744 }; 745 746 LOG(DEBUG) << "Copying " << from << " to " << to; 747 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 748 if (rc != 0) { 749 res = error(rc, "Failed copying " + from + " to " + to); 750 goto fail; 751 } 752 753 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 754 res = error("Failed to restorecon " + to); 755 goto fail; 756 } 757 } 758 759 // Copy private data for all known users 760 for (auto user : users) { 761 762 // Data source may not exist for all users; that's okay 763 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 764 if (access(from_ce.c_str(), F_OK) != 0) { 765 LOG(INFO) << "Missing source " << from_ce; 766 continue; 767 } 768 769 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 770 seInfo, targetSdkVersion, nullptr).isOk()) { 771 res = error("Failed to create package target"); 772 goto fail; 773 } 774 775 char *argv[] = { 776 (char*) kCpPath, 777 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 778 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 779 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 780 (char*) "-P", /* Do not follow symlinks [default] */ 781 (char*) "-d", /* don't dereference symlinks */ 782 nullptr, 783 nullptr 784 }; 785 786 { 787 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 788 auto to = create_data_user_de_path(to_uuid, user); 789 argv[6] = (char*) from.c_str(); 790 argv[7] = (char*) to.c_str(); 791 792 LOG(DEBUG) << "Copying " << from << " to " << to; 793 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 794 if (rc != 0) { 795 res = error(rc, "Failed copying " + from + " to " + to); 796 goto fail; 797 } 798 } 799 { 800 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 801 auto to = create_data_user_ce_path(to_uuid, user); 802 argv[6] = (char*) from.c_str(); 803 argv[7] = (char*) to.c_str(); 804 805 LOG(DEBUG) << "Copying " << from << " to " << to; 806 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 807 if (rc != 0) { 808 res = error(rc, "Failed copying " + from + " to " + to); 809 goto fail; 810 } 811 } 812 813 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 814 appId, seInfo).isOk()) { 815 res = error("Failed to restorecon"); 816 goto fail; 817 } 818 } 819 820 // We let the framework scan the new location and persist that before 821 // deleting the data in the old location; this ordering ensures that 822 // we can recover from things like battery pulls. 823 return ok(); 824 825fail: 826 // Nuke everything we might have already copied 827 { 828 auto to = create_data_app_package_path(to_uuid, data_app_name); 829 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 830 LOG(WARNING) << "Failed to rollback " << to; 831 } 832 } 833 for (auto user : users) { 834 { 835 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 836 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 837 LOG(WARNING) << "Failed to rollback " << to; 838 } 839 } 840 { 841 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 842 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 843 LOG(WARNING) << "Failed to rollback " << to; 844 } 845 } 846 } 847 return res; 848} 849 850binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 851 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 852 ENFORCE_UID(AID_SYSTEM); 853 CHECK_ARGUMENT_UUID(uuid); 854 std::lock_guard<std::recursive_mutex> lock(mLock); 855 856 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 857 if (flags & FLAG_STORAGE_DE) { 858 if (uuid_ == nullptr) { 859 if (ensure_config_user_dirs(userId) != 0) { 860 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 861 } 862 } 863 } 864 865 // Data under /data/media doesn't have an app, but we still want 866 // to limit it to prevent abuse. 867 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), 868 multiuser_get_uid(userId, AID_MEDIA_RW))) { 869 return error("Failed to set hard quota for media_rw"); 870 } 871 872 return ok(); 873} 874 875binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 876 int32_t userId, int32_t flags) { 877 ENFORCE_UID(AID_SYSTEM); 878 CHECK_ARGUMENT_UUID(uuid); 879 std::lock_guard<std::recursive_mutex> lock(mLock); 880 881 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 882 binder::Status res = ok(); 883 if (flags & FLAG_STORAGE_DE) { 884 auto path = create_data_user_de_path(uuid_, userId); 885 if (delete_dir_contents_and_dir(path, true) != 0) { 886 res = error("Failed to delete " + path); 887 } 888 if (uuid_ == nullptr) { 889 path = create_data_misc_legacy_path(userId); 890 if (delete_dir_contents_and_dir(path, true) != 0) { 891 res = error("Failed to delete " + path); 892 } 893 path = create_primary_cur_profile_dir_path(userId); 894 if (delete_dir_contents_and_dir(path, true) != 0) { 895 res = error("Failed to delete " + path); 896 } 897 } 898 } 899 if (flags & FLAG_STORAGE_CE) { 900 auto path = create_data_user_ce_path(uuid_, userId); 901 if (delete_dir_contents_and_dir(path, true) != 0) { 902 res = error("Failed to delete " + path); 903 } 904 path = create_data_media_path(uuid_, userId); 905 if (delete_dir_contents_and_dir(path, true) != 0) { 906 res = error("Failed to delete " + path); 907 } 908 } 909 return res; 910} 911 912/* Try to ensure free_size bytes of storage are available. 913 * Returns 0 on success. 914 * This is rather simple-minded because doing a full LRU would 915 * be potentially memory-intensive, and without atime it would 916 * also require that apps constantly modify file metadata even 917 * when just reading from the cache, which is pretty awful. 918 */ 919binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 920 int64_t freeStorageSize, int32_t flags) { 921 ENFORCE_UID(AID_SYSTEM); 922 CHECK_ARGUMENT_UUID(uuid); 923 std::lock_guard<std::recursive_mutex> lock(mLock); 924 925 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 926 auto data_path = create_data_path(uuid_); 927 auto device = findQuotaDeviceForUuid(uuid); 928 auto noop = (flags & FLAG_FREE_CACHE_NOOP); 929 930 int64_t free = data_disk_free(data_path); 931 if (free < 0) { 932 return error("Failed to determine free space for " + data_path); 933 } 934 935 int64_t needed = freeStorageSize - free; 936 LOG(DEBUG) << "Device " << data_path << " has " << free << " free; requested " 937 << freeStorageSize << "; needed " << needed; 938 939 if (free >= freeStorageSize) { 940 return ok(); 941 } 942 943 if (flags & FLAG_FREE_CACHE_V2) { 944 // This new cache strategy fairly removes files from UIDs by deleting 945 // files from the UIDs which are most over their allocated quota 946 947 // 1. Create trackers for every known UID 948 ATRACE_BEGIN("create"); 949 std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; 950 for (auto user : get_known_users(uuid_)) { 951 FTS *fts; 952 FTSENT *p; 953 auto ce_path = create_data_user_ce_path(uuid_, user); 954 auto de_path = create_data_user_de_path(uuid_, user); 955 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr }; 956 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 957 return error("Failed to fts_open"); 958 } 959 while ((p = fts_read(fts)) != NULL) { 960 if (p->fts_info == FTS_D && p->fts_level == 1) { 961 uid_t uid = p->fts_statp->st_uid; 962 auto search = trackers.find(uid); 963 if (search != trackers.end()) { 964 search->second->addDataPath(p->fts_path); 965 } else { 966 auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( 967 multiuser_get_user_id(uid), multiuser_get_app_id(uid), device)); 968 tracker->addDataPath(p->fts_path); 969 { 970 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 971 tracker->cacheQuota = mCacheQuotas[uid]; 972 } 973 if (tracker->cacheQuota == 0) { 974#if MEASURE_DEBUG 975 LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; 976#endif 977 tracker->cacheQuota = 67108864; 978 } 979 trackers[uid] = tracker; 980 } 981 fts_set(fts, p, FTS_SKIP); 982 } 983 } 984 fts_close(fts); 985 } 986 ATRACE_END(); 987 988 // 2. Populate tracker stats and insert into priority queue 989 ATRACE_BEGIN("populate"); 990 auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { 991 return (left->getCacheRatio() < right->getCacheRatio()); 992 }; 993 std::priority_queue<std::shared_ptr<CacheTracker>, 994 std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); 995 for (const auto& it : trackers) { 996 it.second->loadStats(); 997 queue.push(it.second); 998 } 999 ATRACE_END(); 1000 1001 // 3. Bounce across the queue, freeing items from whichever tracker is 1002 // the most over their assigned quota 1003 ATRACE_BEGIN("bounce"); 1004 std::shared_ptr<CacheTracker> active; 1005 while (active || !queue.empty()) { 1006 // Only look at apps under quota when explicitly requested 1007 if (active && (active->getCacheRatio() < 10000) 1008 && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) { 1009 LOG(DEBUG) << "Active ratio " << active->getCacheRatio() 1010 << " isn't over quota, and defy not requested"; 1011 break; 1012 } 1013 1014 // Find the best tracker to work with; this might involve swapping 1015 // if the active tracker is no longer the most over quota 1016 bool nextBetter = active && !queue.empty() 1017 && active->getCacheRatio() < queue.top()->getCacheRatio(); 1018 if (!active || nextBetter) { 1019 if (active) { 1020 // Current tracker still has items, so we'll consider it 1021 // again later once it bubbles up to surface 1022 queue.push(active); 1023 } 1024 active = queue.top(); queue.pop(); 1025 active->ensureItems(); 1026 continue; 1027 } 1028 1029 // If no items remain, go find another tracker 1030 if (active->items.empty()) { 1031 active = nullptr; 1032 continue; 1033 } else { 1034 auto item = active->items.back(); 1035 active->items.pop_back(); 1036 1037 LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); 1038 if (!noop) { 1039 item->purge(); 1040 } 1041 active->cacheUsed -= item->size; 1042 needed -= item->size; 1043 } 1044 1045 // Verify that we're actually done before bailing, since sneaky 1046 // apps might be using hardlinks 1047 if (needed <= 0) { 1048 free = data_disk_free(data_path); 1049 needed = freeStorageSize - free; 1050 if (needed <= 0) { 1051 break; 1052 } else { 1053 LOG(WARNING) << "Expected to be done but still need " << needed; 1054 } 1055 } 1056 } 1057 ATRACE_END(); 1058 1059 } else { 1060 return error("Legacy cache logic no longer supported"); 1061 } 1062 1063 free = data_disk_free(data_path); 1064 if (free >= freeStorageSize) { 1065 return ok(); 1066 } else { 1067 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 1068 freeStorageSize, data_path.c_str(), free)); 1069 } 1070} 1071 1072binder::Status InstalldNativeService::rmdex(const std::string& codePath, 1073 const std::string& instructionSet) { 1074 ENFORCE_UID(AID_SYSTEM); 1075 std::lock_guard<std::recursive_mutex> lock(mLock); 1076 1077 char dex_path[PKG_PATH_MAX]; 1078 1079 const char* path = codePath.c_str(); 1080 const char* instruction_set = instructionSet.c_str(); 1081 1082 if (validate_apk_path(path) && validate_system_app_path(path)) { 1083 return error("Invalid path " + codePath); 1084 } 1085 1086 if (!create_cache_path(dex_path, path, instruction_set)) { 1087 return error("Failed to create cache path for " + codePath); 1088 } 1089 1090 ALOGV("unlink %s\n", dex_path); 1091 if (unlink(dex_path) < 0) { 1092 return error(StringPrintf("Failed to unlink %s", dex_path)); 1093 } else { 1094 return ok(); 1095 } 1096} 1097 1098struct stats { 1099 int64_t codeSize; 1100 int64_t dataSize; 1101 int64_t cacheSize; 1102}; 1103 1104#if MEASURE_DEBUG 1105static std::string toString(std::vector<int64_t> values) { 1106 std::stringstream res; 1107 res << "["; 1108 for (size_t i = 0; i < values.size(); i++) { 1109 res << values[i]; 1110 if (i < values.size() - 1) { 1111 res << ","; 1112 } 1113 } 1114 res << "]"; 1115 return res.str(); 1116} 1117#endif 1118 1119static void collectQuotaStats(const std::string& device, int32_t userId, 1120 int32_t appId, struct stats* stats, struct stats* extStats) { 1121 if (device.empty()) return; 1122 1123 struct dqblk dq; 1124 1125 if (stats != nullptr) { 1126 uid_t uid = multiuser_get_uid(userId, appId); 1127 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1128 reinterpret_cast<char*>(&dq)) != 0) { 1129 if (errno != ESRCH) { 1130 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1131 } 1132 } else { 1133#if MEASURE_DEBUG 1134 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1135#endif 1136 stats->dataSize += dq.dqb_curspace; 1137 } 1138 1139 int cacheGid = multiuser_get_cache_gid(userId, appId); 1140 if (cacheGid != -1) { 1141 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 1142 reinterpret_cast<char*>(&dq)) != 0) { 1143 if (errno != ESRCH) { 1144 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 1145 } 1146 } else { 1147#if MEASURE_DEBUG 1148 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 1149#endif 1150 stats->cacheSize += dq.dqb_curspace; 1151 } 1152 } 1153 1154 int sharedGid = multiuser_get_shared_gid(0, appId); 1155 if (sharedGid != -1) { 1156 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 1157 reinterpret_cast<char*>(&dq)) != 0) { 1158 if (errno != ESRCH) { 1159 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 1160 } 1161 } else { 1162#if MEASURE_DEBUG 1163 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 1164#endif 1165 stats->codeSize += dq.dqb_curspace; 1166 } 1167 } 1168 } 1169 1170 if (extStats != nullptr) { 1171 int extGid = multiuser_get_ext_gid(userId, appId); 1172 if (extGid != -1) { 1173 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extGid, 1174 reinterpret_cast<char*>(&dq)) != 0) { 1175 if (errno != ESRCH) { 1176 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extGid; 1177 } 1178 } else { 1179#if MEASURE_DEBUG 1180 LOG(DEBUG) << "quotactl() for GID " << extGid << " " << dq.dqb_curspace; 1181#endif 1182 extStats->dataSize += dq.dqb_curspace; 1183 } 1184 } 1185 1186 int extCacheGid = multiuser_get_ext_cache_gid(userId, appId); 1187 if (extCacheGid != -1) { 1188 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extCacheGid, 1189 reinterpret_cast<char*>(&dq)) != 0) { 1190 if (errno != ESRCH) { 1191 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extCacheGid; 1192 } 1193 } else { 1194#if MEASURE_DEBUG 1195 LOG(DEBUG) << "quotactl() for GID " << extCacheGid << " " << dq.dqb_curspace; 1196#endif 1197 extStats->dataSize += dq.dqb_curspace; 1198 extStats->cacheSize += dq.dqb_curspace; 1199 } 1200 } 1201 } 1202} 1203 1204static void collectManualStats(const std::string& path, struct stats* stats) { 1205 DIR *d; 1206 int dfd; 1207 struct dirent *de; 1208 struct stat s; 1209 1210 d = opendir(path.c_str()); 1211 if (d == nullptr) { 1212 if (errno != ENOENT) { 1213 PLOG(WARNING) << "Failed to open " << path; 1214 } 1215 return; 1216 } 1217 dfd = dirfd(d); 1218 while ((de = readdir(d))) { 1219 const char *name = de->d_name; 1220 1221 int64_t size = 0; 1222 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 1223 size = s.st_blocks * 512; 1224 } 1225 1226 if (de->d_type == DT_DIR) { 1227 if (!strcmp(name, ".")) { 1228 // Don't recurse, but still count node size 1229 } else if (!strcmp(name, "..")) { 1230 // Don't recurse or count node size 1231 continue; 1232 } else { 1233 // Measure all children nodes 1234 size = 0; 1235 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1236 } 1237 1238 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1239 stats->cacheSize += size; 1240 } 1241 } 1242 1243 // Legacy symlink isn't owned by app 1244 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1245 continue; 1246 } 1247 1248 // Everything found inside is considered data 1249 stats->dataSize += size; 1250 } 1251 closedir(d); 1252} 1253 1254static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1255 bool exclude_apps = false) { 1256 DIR *d; 1257 int dfd; 1258 struct dirent *de; 1259 struct stat s; 1260 1261 d = opendir(path.c_str()); 1262 if (d == nullptr) { 1263 if (errno != ENOENT) { 1264 PLOG(WARNING) << "Failed to open " << path; 1265 } 1266 return; 1267 } 1268 dfd = dirfd(d); 1269 while ((de = readdir(d))) { 1270 if (de->d_type == DT_DIR) { 1271 const char *name = de->d_name; 1272 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1273 continue; 1274 } 1275 int32_t user_uid = multiuser_get_app_id(s.st_uid); 1276 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1277 continue; 1278 } else if (exclude_apps && (user_uid >= AID_APP_START && user_uid <= AID_APP_END)) { 1279 continue; 1280 } else { 1281 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1282 } 1283 } 1284 } 1285 closedir(d); 1286} 1287 1288static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { 1289 FTS *fts; 1290 FTSENT *p; 1291 char *argv[] = { (char*) path.c_str(), nullptr }; 1292 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1293 PLOG(ERROR) << "Failed to fts_open " << path; 1294 return; 1295 } 1296 while ((p = fts_read(fts)) != NULL) { 1297 p->fts_number = p->fts_parent->fts_number; 1298 switch (p->fts_info) { 1299 case FTS_D: 1300 if (p->fts_level == 4 1301 && !strcmp(p->fts_name, "cache") 1302 && !strcmp(p->fts_parent->fts_parent->fts_name, "data") 1303 && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { 1304 p->fts_number = 1; 1305 } 1306 // Fall through to count the directory 1307 case FTS_DEFAULT: 1308 case FTS_F: 1309 case FTS_SL: 1310 case FTS_SLNONE: 1311 int64_t size = (p->fts_statp->st_blocks * 512); 1312 if (p->fts_number == 1) { 1313 stats->cacheSize += size; 1314 } 1315 stats->dataSize += size; 1316 break; 1317 } 1318 } 1319 fts_close(fts); 1320} 1321 1322binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1323 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1324 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1325 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1326 ENFORCE_UID(AID_SYSTEM); 1327 CHECK_ARGUMENT_UUID(uuid); 1328 for (auto packageName : packageNames) { 1329 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1330 } 1331 // NOTE: Locking is relaxed on this method, since it's limited to 1332 // read-only measurements without mutation. 1333 1334 // When modifying this logic, always verify using tests: 1335 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1336 1337#if MEASURE_DEBUG 1338 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1339#endif 1340 1341 // Here's a summary of the common storage locations across the platform, 1342 // and how they're each tagged: 1343 // 1344 // /data/app/com.example UID system 1345 // /data/app/com.example/oat UID system 1346 // /data/user/0/com.example UID u0_a10 GID u0_a10 1347 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1348 // /data/media/0/foo.txt UID u0_media_rw 1349 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1350 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1351 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1352 // /data/media/obb/com.example UID system 1353 1354 struct stats stats; 1355 struct stats extStats; 1356 memset(&stats, 0, sizeof(stats)); 1357 memset(&extStats, 0, sizeof(extStats)); 1358 1359 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1360 1361 auto device = findQuotaDeviceForUuid(uuid); 1362 if (device.empty()) { 1363 flags &= ~FLAG_USE_QUOTA; 1364 } 1365 1366 ATRACE_BEGIN("obb"); 1367 for (auto packageName : packageNames) { 1368 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1369 calculate_tree_size(obbCodePath, &extStats.codeSize); 1370 } 1371 ATRACE_END(); 1372 1373 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1374 ATRACE_BEGIN("code"); 1375 for (auto codePath : codePaths) { 1376 calculate_tree_size(codePath, &stats.codeSize, -1, 1377 multiuser_get_shared_gid(0, appId)); 1378 } 1379 ATRACE_END(); 1380 1381 ATRACE_BEGIN("quota"); 1382 collectQuotaStats(device, userId, appId, &stats, &extStats); 1383 ATRACE_END(); 1384 } else { 1385 ATRACE_BEGIN("code"); 1386 for (auto codePath : codePaths) { 1387 calculate_tree_size(codePath, &stats.codeSize); 1388 } 1389 ATRACE_END(); 1390 1391 for (size_t i = 0; i < packageNames.size(); i++) { 1392 const char* pkgname = packageNames[i].c_str(); 1393 1394 ATRACE_BEGIN("data"); 1395 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1396 collectManualStats(cePath, &stats); 1397 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1398 collectManualStats(dePath, &stats); 1399 ATRACE_END(); 1400 1401 if (!uuid) { 1402 ATRACE_BEGIN("profiles"); 1403 calculate_tree_size( 1404 create_primary_current_profile_package_dir_path(userId, pkgname), 1405 &stats.dataSize); 1406 calculate_tree_size( 1407 create_primary_reference_profile_package_dir_path(pkgname), 1408 &stats.codeSize); 1409 ATRACE_END(); 1410 } 1411 1412 ATRACE_BEGIN("external"); 1413 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1414 collectManualStats(extPath, &extStats); 1415 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1416 calculate_tree_size(mediaPath, &extStats.dataSize); 1417 ATRACE_END(); 1418 } 1419 1420 if (!uuid) { 1421 ATRACE_BEGIN("dalvik"); 1422 int32_t sharedGid = multiuser_get_shared_gid(0, appId); 1423 if (sharedGid != -1) { 1424 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1425 sharedGid, -1); 1426 } 1427 ATRACE_END(); 1428 } 1429 } 1430 1431 std::vector<int64_t> ret; 1432 ret.push_back(stats.codeSize); 1433 ret.push_back(stats.dataSize); 1434 ret.push_back(stats.cacheSize); 1435 ret.push_back(extStats.codeSize); 1436 ret.push_back(extStats.dataSize); 1437 ret.push_back(extStats.cacheSize); 1438#if MEASURE_DEBUG 1439 LOG(DEBUG) << "Final result " << toString(ret); 1440#endif 1441 *_aidl_return = ret; 1442 return ok(); 1443} 1444 1445binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1446 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1447 std::vector<int64_t>* _aidl_return) { 1448 ENFORCE_UID(AID_SYSTEM); 1449 CHECK_ARGUMENT_UUID(uuid); 1450 // NOTE: Locking is relaxed on this method, since it's limited to 1451 // read-only measurements without mutation. 1452 1453 // When modifying this logic, always verify using tests: 1454 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1455 1456#if MEASURE_DEBUG 1457 LOG(INFO) << "Measuring user " << userId; 1458#endif 1459 1460 struct stats stats; 1461 struct stats extStats; 1462 memset(&stats, 0, sizeof(stats)); 1463 memset(&extStats, 0, sizeof(extStats)); 1464 1465 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1466 1467 auto device = findQuotaDeviceForUuid(uuid); 1468 if (device.empty()) { 1469 flags &= ~FLAG_USE_QUOTA; 1470 } 1471 1472 if (flags & FLAG_USE_QUOTA) { 1473 struct dqblk dq; 1474 1475 ATRACE_BEGIN("obb"); 1476 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), AID_MEDIA_OBB, 1477 reinterpret_cast<char*>(&dq)) != 0) { 1478 if (errno != ESRCH) { 1479 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << AID_MEDIA_OBB; 1480 } 1481 } else { 1482#if MEASURE_DEBUG 1483 LOG(DEBUG) << "quotactl() for GID " << AID_MEDIA_OBB << " " << dq.dqb_curspace; 1484#endif 1485 extStats.codeSize += dq.dqb_curspace; 1486 } 1487 ATRACE_END(); 1488 1489 ATRACE_BEGIN("code"); 1490 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1491 ATRACE_END(); 1492 1493 ATRACE_BEGIN("data"); 1494 auto cePath = create_data_user_ce_path(uuid_, userId); 1495 collectManualStatsForUser(cePath, &stats, true); 1496 auto dePath = create_data_user_de_path(uuid_, userId); 1497 collectManualStatsForUser(dePath, &stats, true); 1498 ATRACE_END(); 1499 1500 if (!uuid) { 1501 ATRACE_BEGIN("profile"); 1502 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1503 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1504 auto refProfilePath = create_primary_ref_profile_dir_path(); 1505 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1506 ATRACE_END(); 1507 } 1508 1509 ATRACE_BEGIN("external"); 1510 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1511 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1512 reinterpret_cast<char*>(&dq)) != 0) { 1513 if (errno != ESRCH) { 1514 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1515 } 1516 } else { 1517#if MEASURE_DEBUG 1518 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1519#endif 1520 extStats.dataSize += dq.dqb_curspace; 1521 } 1522 ATRACE_END(); 1523 1524 if (!uuid) { 1525 ATRACE_BEGIN("dalvik"); 1526 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1527 -1, -1, true); 1528 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, 1529 -1, -1, true); 1530 ATRACE_END(); 1531 } 1532 1533 ATRACE_BEGIN("quota"); 1534 int64_t dataSize = extStats.dataSize; 1535 for (auto appId : appIds) { 1536 if (appId >= AID_APP_START) { 1537 collectQuotaStats(device, userId, appId, &stats, &extStats); 1538 1539#if MEASURE_DEBUG 1540 // Sleep to make sure we don't lose logs 1541 usleep(1); 1542#endif 1543 } 1544 } 1545 extStats.dataSize = dataSize; 1546 ATRACE_END(); 1547 } else { 1548 ATRACE_BEGIN("obb"); 1549 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1550 calculate_tree_size(obbPath, &extStats.codeSize); 1551 ATRACE_END(); 1552 1553 ATRACE_BEGIN("code"); 1554 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1555 ATRACE_END(); 1556 1557 ATRACE_BEGIN("data"); 1558 auto cePath = create_data_user_ce_path(uuid_, userId); 1559 collectManualStatsForUser(cePath, &stats); 1560 auto dePath = create_data_user_de_path(uuid_, userId); 1561 collectManualStatsForUser(dePath, &stats); 1562 ATRACE_END(); 1563 1564 if (!uuid) { 1565 ATRACE_BEGIN("profile"); 1566 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1567 calculate_tree_size(userProfilePath, &stats.dataSize); 1568 auto refProfilePath = create_primary_ref_profile_dir_path(); 1569 calculate_tree_size(refProfilePath, &stats.codeSize); 1570 ATRACE_END(); 1571 } 1572 1573 ATRACE_BEGIN("external"); 1574 auto dataMediaPath = create_data_media_path(uuid_, userId); 1575 collectManualExternalStatsForUser(dataMediaPath, &extStats); 1576#if MEASURE_DEBUG 1577 LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " 1578 << extStats.cacheSize; 1579#endif 1580 ATRACE_END(); 1581 1582 if (!uuid) { 1583 ATRACE_BEGIN("dalvik"); 1584 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1585 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize); 1586 ATRACE_END(); 1587 } 1588 } 1589 1590 std::vector<int64_t> ret; 1591 ret.push_back(stats.codeSize); 1592 ret.push_back(stats.dataSize); 1593 ret.push_back(stats.cacheSize); 1594 ret.push_back(extStats.codeSize); 1595 ret.push_back(extStats.dataSize); 1596 ret.push_back(extStats.cacheSize); 1597#if MEASURE_DEBUG 1598 LOG(DEBUG) << "Final result " << toString(ret); 1599#endif 1600 *_aidl_return = ret; 1601 return ok(); 1602} 1603 1604binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1605 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1606 std::vector<int64_t>* _aidl_return) { 1607 ENFORCE_UID(AID_SYSTEM); 1608 CHECK_ARGUMENT_UUID(uuid); 1609 // NOTE: Locking is relaxed on this method, since it's limited to 1610 // read-only measurements without mutation. 1611 1612 // When modifying this logic, always verify using tests: 1613 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1614 1615#if MEASURE_DEBUG 1616 LOG(INFO) << "Measuring external " << userId; 1617#endif 1618 1619 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1620 1621 int64_t totalSize = 0; 1622 int64_t audioSize = 0; 1623 int64_t videoSize = 0; 1624 int64_t imageSize = 0; 1625 int64_t appSize = 0; 1626 1627 auto device = findQuotaDeviceForUuid(uuid); 1628 if (device.empty()) { 1629 flags &= ~FLAG_USE_QUOTA; 1630 } 1631 1632 if (flags & FLAG_USE_QUOTA) { 1633 struct dqblk dq; 1634 1635 ATRACE_BEGIN("quota"); 1636 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1637 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1638 reinterpret_cast<char*>(&dq)) != 0) { 1639 if (errno != ESRCH) { 1640 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1641 } 1642 } else { 1643#if MEASURE_DEBUG 1644 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1645#endif 1646 totalSize = dq.dqb_curspace; 1647 } 1648 1649 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1650 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1651 reinterpret_cast<char*>(&dq)) == 0) { 1652#if MEASURE_DEBUG 1653 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1654#endif 1655 audioSize = dq.dqb_curspace; 1656 } 1657 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1658 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1659 reinterpret_cast<char*>(&dq)) == 0) { 1660#if MEASURE_DEBUG 1661 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1662#endif 1663 videoSize = dq.dqb_curspace; 1664 } 1665 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1666 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1667 reinterpret_cast<char*>(&dq)) == 0) { 1668#if MEASURE_DEBUG 1669 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1670#endif 1671 imageSize = dq.dqb_curspace; 1672 } 1673 ATRACE_END(); 1674 1675 ATRACE_BEGIN("apps"); 1676 struct stats extStats; 1677 memset(&extStats, 0, sizeof(extStats)); 1678 for (auto appId : appIds) { 1679 if (appId >= AID_APP_START) { 1680 collectQuotaStats(device, userId, appId, nullptr, &extStats); 1681 } 1682 } 1683 appSize = extStats.dataSize + extStats.cacheSize; 1684 ATRACE_END(); 1685 } else { 1686 ATRACE_BEGIN("manual"); 1687 FTS *fts; 1688 FTSENT *p; 1689 auto path = create_data_media_path(uuid_, userId); 1690 char *argv[] = { (char*) path.c_str(), nullptr }; 1691 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1692 return error("Failed to fts_open " + path); 1693 } 1694 while ((p = fts_read(fts)) != NULL) { 1695 char* ext; 1696 int64_t size = (p->fts_statp->st_blocks * 512); 1697 switch (p->fts_info) { 1698 case FTS_F: 1699 // Only categorize files not belonging to apps 1700 if (p->fts_parent->fts_number == 0) { 1701 ext = strrchr(p->fts_name, '.'); 1702 if (ext != nullptr) { 1703 switch (MatchExtension(++ext)) { 1704 case AID_MEDIA_AUDIO: audioSize += size; break; 1705 case AID_MEDIA_VIDEO: videoSize += size; break; 1706 case AID_MEDIA_IMAGE: imageSize += size; break; 1707 } 1708 } 1709 } 1710 // Fall through to always count against total 1711 case FTS_D: 1712 // Ignore data belonging to specific apps 1713 p->fts_number = p->fts_parent->fts_number; 1714 if (p->fts_level == 1 && !strcmp(p->fts_name, "Android")) { 1715 p->fts_number = 1; 1716 } 1717 case FTS_DEFAULT: 1718 case FTS_SL: 1719 case FTS_SLNONE: 1720 if (p->fts_parent->fts_number == 1) { 1721 appSize += size; 1722 } 1723 totalSize += size; 1724 break; 1725 } 1726 } 1727 fts_close(fts); 1728 ATRACE_END(); 1729 } 1730 1731 std::vector<int64_t> ret; 1732 ret.push_back(totalSize); 1733 ret.push_back(audioSize); 1734 ret.push_back(videoSize); 1735 ret.push_back(imageSize); 1736 ret.push_back(appSize); 1737#if MEASURE_DEBUG 1738 LOG(DEBUG) << "Final result " << toString(ret); 1739#endif 1740 *_aidl_return = ret; 1741 return ok(); 1742} 1743 1744binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, 1745 int32_t userId, int32_t appId, int64_t cacheQuota) { 1746 ENFORCE_UID(AID_SYSTEM); 1747 CHECK_ARGUMENT_UUID(uuid); 1748 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 1749 1750 int32_t uid = multiuser_get_uid(userId, appId); 1751 mCacheQuotas[uid] = cacheQuota; 1752 1753 return ok(); 1754} 1755 1756// Dumps the contents of a profile file, using pkgname's dex files for pretty 1757// printing the result. 1758binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1759 const std::string& codePaths, bool* _aidl_return) { 1760 ENFORCE_UID(AID_SYSTEM); 1761 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1762 std::lock_guard<std::recursive_mutex> lock(mLock); 1763 1764 const char* pkgname = packageName.c_str(); 1765 const char* code_paths = codePaths.c_str(); 1766 1767 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1768 return ok(); 1769} 1770 1771// TODO: Consider returning error codes. 1772binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1773 bool* _aidl_return) { 1774 ENFORCE_UID(AID_SYSTEM); 1775 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1776 std::lock_guard<std::recursive_mutex> lock(mLock); 1777 1778 *_aidl_return = analyze_primary_profiles(uid, packageName); 1779 return ok(); 1780} 1781 1782binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1783 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1784 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1785 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1786 const std::unique_ptr<std::string>& sharedLibraries, 1787 const std::unique_ptr<std::string>& seInfo) { 1788 ENFORCE_UID(AID_SYSTEM); 1789 CHECK_ARGUMENT_UUID(uuid); 1790 if (packageName && *packageName != "*") { 1791 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1792 } 1793 std::lock_guard<std::recursive_mutex> lock(mLock); 1794 1795 const char* apk_path = apkPath.c_str(); 1796 const char* pkgname = packageName ? packageName->c_str() : "*"; 1797 const char* instruction_set = instructionSet.c_str(); 1798 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1799 const char* compiler_filter = compilerFilter.c_str(); 1800 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1801 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1802 const char* se_info = seInfo ? seInfo->c_str() : nullptr; 1803 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1804 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries, se_info); 1805 return res ? error(res, "Failed to dexopt") : ok(); 1806} 1807 1808binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1809 ENFORCE_UID(AID_SYSTEM); 1810 std::lock_guard<std::recursive_mutex> lock(mLock); 1811 1812 const char* instruction_set = instructionSet.c_str(); 1813 1814 char boot_marker_path[PKG_PATH_MAX]; 1815 sprintf(boot_marker_path, 1816 "%s/%s/%s/.booting", 1817 android_data_dir.path, 1818 DALVIK_CACHE, 1819 instruction_set); 1820 1821 ALOGV("mark_boot_complete : %s", boot_marker_path); 1822 if (unlink(boot_marker_path) != 0) { 1823 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1824 } 1825 return ok(); 1826} 1827 1828void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1829 struct stat* statbuf) 1830{ 1831 while (path[basepos] != 0) { 1832 if (path[basepos] == '/') { 1833 path[basepos] = 0; 1834 if (lstat(path, statbuf) < 0) { 1835 ALOGV("Making directory: %s\n", path); 1836 if (mkdir(path, mode) == 0) { 1837 chown(path, uid, gid); 1838 } else { 1839 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1840 } 1841 } 1842 path[basepos] = '/'; 1843 basepos++; 1844 } 1845 basepos++; 1846 } 1847} 1848 1849binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1850 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1851 const std::string& nativeLibPath32, int32_t userId) { 1852 ENFORCE_UID(AID_SYSTEM); 1853 CHECK_ARGUMENT_UUID(uuid); 1854 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1855 std::lock_guard<std::recursive_mutex> lock(mLock); 1856 1857 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1858 const char* pkgname = packageName.c_str(); 1859 const char* asecLibDir = nativeLibPath32.c_str(); 1860 struct stat s, libStat; 1861 binder::Status res = ok(); 1862 1863 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1864 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1865 1866 const char* pkgdir = _pkgdir.c_str(); 1867 const char* libsymlink = _libsymlink.c_str(); 1868 1869 if (stat(pkgdir, &s) < 0) { 1870 return error("Failed to stat " + _pkgdir); 1871 } 1872 1873 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1874 return error("Failed to chown " + _pkgdir); 1875 } 1876 1877 if (chmod(pkgdir, 0700) < 0) { 1878 res = error("Failed to chmod " + _pkgdir); 1879 goto out; 1880 } 1881 1882 if (lstat(libsymlink, &libStat) < 0) { 1883 if (errno != ENOENT) { 1884 res = error("Failed to stat " + _libsymlink); 1885 goto out; 1886 } 1887 } else { 1888 if (S_ISDIR(libStat.st_mode)) { 1889 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1890 res = error("Failed to delete " + _libsymlink); 1891 goto out; 1892 } 1893 } else if (S_ISLNK(libStat.st_mode)) { 1894 if (unlink(libsymlink) < 0) { 1895 res = error("Failed to unlink " + _libsymlink); 1896 goto out; 1897 } 1898 } 1899 } 1900 1901 if (symlink(asecLibDir, libsymlink) < 0) { 1902 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1903 goto out; 1904 } 1905 1906out: 1907 if (chmod(pkgdir, s.st_mode) < 0) { 1908 auto msg = "Failed to cleanup chmod " + _pkgdir; 1909 if (res.isOk()) { 1910 res = error(msg); 1911 } else { 1912 PLOG(ERROR) << msg; 1913 } 1914 } 1915 1916 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1917 auto msg = "Failed to cleanup chown " + _pkgdir; 1918 if (res.isOk()) { 1919 res = error(msg); 1920 } else { 1921 PLOG(ERROR) << msg; 1922 } 1923 } 1924 1925 return res; 1926} 1927 1928static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1929{ 1930 static const char *IDMAP_BIN = "/system/bin/idmap"; 1931 static const size_t MAX_INT_LEN = 32; 1932 char idmap_str[MAX_INT_LEN]; 1933 1934 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1935 1936 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1937 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1938} 1939 1940// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1941// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1942static int flatten_path(const char *prefix, const char *suffix, 1943 const char *overlay_path, char *idmap_path, size_t N) 1944{ 1945 if (overlay_path == NULL || idmap_path == NULL) { 1946 return -1; 1947 } 1948 const size_t len_overlay_path = strlen(overlay_path); 1949 // will access overlay_path + 1 further below; requires absolute path 1950 if (len_overlay_path < 2 || *overlay_path != '/') { 1951 return -1; 1952 } 1953 const size_t len_idmap_root = strlen(prefix); 1954 const size_t len_suffix = strlen(suffix); 1955 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1956 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1957 // additions below would cause overflow 1958 return -1; 1959 } 1960 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1961 return -1; 1962 } 1963 memset(idmap_path, 0, N); 1964 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1965 char *ch = idmap_path + len_idmap_root; 1966 while (*ch != '\0') { 1967 if (*ch == '/') { 1968 *ch = '@'; 1969 } 1970 ++ch; 1971 } 1972 return 0; 1973} 1974 1975binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1976 const std::string& overlayApkPath, int32_t uid) { 1977 ENFORCE_UID(AID_SYSTEM); 1978 std::lock_guard<std::recursive_mutex> lock(mLock); 1979 1980 const char* target_apk = targetApkPath.c_str(); 1981 const char* overlay_apk = overlayApkPath.c_str(); 1982 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1983 1984 int idmap_fd = -1; 1985 char idmap_path[PATH_MAX]; 1986 struct stat target_apk_stat, overlay_apk_stat, idmap_stat; 1987 bool outdated = false; 1988 1989 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1990 idmap_path, sizeof(idmap_path)) == -1) { 1991 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1992 goto fail; 1993 } 1994 1995 if (stat(idmap_path, &idmap_stat) < 0 || 1996 stat(target_apk, &target_apk_stat) < 0 || 1997 stat(overlay_apk, &overlay_apk_stat) < 0) { 1998 outdated = true; 1999 } else if (idmap_stat.st_mtime < target_apk_stat.st_mtime || 2000 idmap_stat.st_mtime < overlay_apk_stat.st_mtime) { 2001 outdated = true; 2002 } 2003 2004 if (outdated) { 2005 unlink(idmap_path); 2006 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 2007 } else { 2008 idmap_fd = open(idmap_path, O_RDWR); 2009 } 2010 2011 if (idmap_fd < 0) { 2012 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 2013 goto fail; 2014 } 2015 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 2016 ALOGE("idmap cannot chown '%s'\n", idmap_path); 2017 goto fail; 2018 } 2019 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 2020 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 2021 goto fail; 2022 } 2023 2024 if (!outdated) { 2025 close(idmap_fd); 2026 return ok(); 2027 } 2028 2029 pid_t pid; 2030 pid = fork(); 2031 if (pid == 0) { 2032 /* child -- drop privileges before continuing */ 2033 if (setgid(uid) != 0) { 2034 ALOGE("setgid(%d) failed during idmap\n", uid); 2035 exit(1); 2036 } 2037 if (setuid(uid) != 0) { 2038 ALOGE("setuid(%d) failed during idmap\n", uid); 2039 exit(1); 2040 } 2041 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 2042 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 2043 exit(1); 2044 } 2045 2046 run_idmap(target_apk, overlay_apk, idmap_fd); 2047 exit(1); /* only if exec call to idmap failed */ 2048 } else { 2049 int status = wait_child(pid); 2050 if (status != 0) { 2051 ALOGE("idmap failed, status=0x%04x\n", status); 2052 goto fail; 2053 } 2054 } 2055 2056 close(idmap_fd); 2057 return ok(); 2058fail: 2059 if (idmap_fd >= 0) { 2060 close(idmap_fd); 2061 unlink(idmap_path); 2062 } 2063 return error(); 2064} 2065 2066binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) { 2067 const char* overlay_apk = overlayApkPath.c_str(); 2068 char idmap_path[PATH_MAX]; 2069 2070 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 2071 idmap_path, sizeof(idmap_path)) == -1) { 2072 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 2073 return error(); 2074 } 2075 if (unlink(idmap_path) < 0) { 2076 ALOGE("couldn't unlink idmap file %s\n", idmap_path); 2077 return error(); 2078 } 2079 return ok(); 2080} 2081 2082binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 2083 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 2084 const std::string& seInfo) { 2085 ENFORCE_UID(AID_SYSTEM); 2086 CHECK_ARGUMENT_UUID(uuid); 2087 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2088 std::lock_guard<std::recursive_mutex> lock(mLock); 2089 2090 binder::Status res = ok(); 2091 2092 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 2093 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 2094 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 2095 const char* pkgName = packageName.c_str(); 2096 const char* seinfo = seInfo.c_str(); 2097 2098 uid_t uid = multiuser_get_uid(userId, appId); 2099 if (flags & FLAG_STORAGE_CE) { 2100 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 2101 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2102 res = error("restorecon failed for " + path); 2103 } 2104 } 2105 if (flags & FLAG_STORAGE_DE) { 2106 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 2107 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2108 res = error("restorecon failed for " + path); 2109 } 2110 } 2111 return res; 2112} 2113 2114binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 2115 const std::string& instructionSet) { 2116 ENFORCE_UID(AID_SYSTEM); 2117 std::lock_guard<std::recursive_mutex> lock(mLock); 2118 2119 const char* oat_dir = oatDir.c_str(); 2120 const char* instruction_set = instructionSet.c_str(); 2121 char oat_instr_dir[PKG_PATH_MAX]; 2122 2123 if (validate_apk_path(oat_dir)) { 2124 return error("Invalid path " + oatDir); 2125 } 2126 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2127 return error("Failed to prepare " + oatDir); 2128 } 2129 if (selinux_android_restorecon(oat_dir, 0)) { 2130 return error("Failed to restorecon " + oatDir); 2131 } 2132 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 2133 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2134 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 2135 } 2136 return ok(); 2137} 2138 2139binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 2140 ENFORCE_UID(AID_SYSTEM); 2141 std::lock_guard<std::recursive_mutex> lock(mLock); 2142 2143 if (validate_apk_path(packageDir.c_str())) { 2144 return error("Invalid path " + packageDir); 2145 } 2146 if (delete_dir_contents_and_dir(packageDir) != 0) { 2147 return error("Failed to delete " + packageDir); 2148 } 2149 return ok(); 2150} 2151 2152binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 2153 const std::string& fromBase, const std::string& toBase) { 2154 ENFORCE_UID(AID_SYSTEM); 2155 std::lock_guard<std::recursive_mutex> lock(mLock); 2156 2157 const char* relative_path = relativePath.c_str(); 2158 const char* from_base = fromBase.c_str(); 2159 const char* to_base = toBase.c_str(); 2160 char from_path[PKG_PATH_MAX]; 2161 char to_path[PKG_PATH_MAX]; 2162 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 2163 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 2164 2165 if (validate_apk_path_subdirs(from_path)) { 2166 return error(StringPrintf("Invalid from path %s", from_path)); 2167 } 2168 2169 if (validate_apk_path_subdirs(to_path)) { 2170 return error(StringPrintf("Invalid to path %s", to_path)); 2171 } 2172 2173 if (link(from_path, to_path) < 0) { 2174 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 2175 } 2176 2177 return ok(); 2178} 2179 2180binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 2181 const std::string& instructionSet, const std::string& outputPath) { 2182 ENFORCE_UID(AID_SYSTEM); 2183 std::lock_guard<std::recursive_mutex> lock(mLock); 2184 2185 const char* apk_path = apkPath.c_str(); 2186 const char* instruction_set = instructionSet.c_str(); 2187 const char* oat_dir = outputPath.c_str(); 2188 2189 bool success = move_ab(apk_path, instruction_set, oat_dir); 2190 return success ? ok() : error(); 2191} 2192 2193binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 2194 const std::string& instructionSet, const std::string& outputPath) { 2195 ENFORCE_UID(AID_SYSTEM); 2196 std::lock_guard<std::recursive_mutex> lock(mLock); 2197 2198 const char* apk_path = apkPath.c_str(); 2199 const char* instruction_set = instructionSet.c_str(); 2200 const char* oat_dir = outputPath.c_str(); 2201 2202 bool res = delete_odex(apk_path, instruction_set, oat_dir); 2203 return res ? ok() : error(); 2204} 2205 2206binder::Status InstalldNativeService::reconcileSecondaryDexFile( 2207 const std::string& dexPath, const std::string& packageName, int32_t uid, 2208 const std::vector<std::string>& isas, const std::unique_ptr<std::string>& volumeUuid, 2209 int32_t storage_flag, bool* _aidl_return) { 2210 ENFORCE_UID(AID_SYSTEM); 2211 CHECK_ARGUMENT_UUID(volumeUuid); 2212 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2213 2214 std::lock_guard<std::recursive_mutex> lock(mLock); 2215 bool result = android::installd::reconcile_secondary_dex_file( 2216 dexPath, packageName, uid, isas, volumeUuid, storage_flag, _aidl_return); 2217 return result ? ok() : error(); 2218} 2219 2220binder::Status InstalldNativeService::invalidateMounts() { 2221 ENFORCE_UID(AID_SYSTEM); 2222 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 2223 2224 mQuotaDevices.clear(); 2225 2226 std::ifstream in("/proc/mounts"); 2227 if (!in.is_open()) { 2228 return error("Failed to read mounts"); 2229 } 2230 2231 std::string source; 2232 std::string target; 2233 std::string ignored; 2234 struct dqblk dq; 2235 while (!in.eof()) { 2236 std::getline(in, source, ' '); 2237 std::getline(in, target, ' '); 2238 std::getline(in, ignored); 2239 2240 if (source.compare(0, 11, "/dev/block/") == 0) { 2241 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 2242 reinterpret_cast<char*>(&dq)) == 0) { 2243 LOG(DEBUG) << "Found " << source << " with quota"; 2244 mQuotaDevices[target] = source; 2245 2246 // ext4 only enables DQUOT_USAGE_ENABLED by default, so we 2247 // need to kick it again to enable DQUOT_LIMITS_ENABLED. 2248 if (quotactl(QCMD(Q_QUOTAON, USRQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2249 && errno != EBUSY) { 2250 PLOG(ERROR) << "Failed to enable USRQUOTA on " << source; 2251 } 2252 if (quotactl(QCMD(Q_QUOTAON, GRPQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2253 && errno != EBUSY) { 2254 PLOG(ERROR) << "Failed to enable GRPQUOTA on " << source; 2255 } 2256 } 2257 } 2258 } 2259 return ok(); 2260} 2261 2262std::string InstalldNativeService::findQuotaDeviceForUuid( 2263 const std::unique_ptr<std::string>& uuid) { 2264 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 2265 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 2266 return mQuotaDevices[path]; 2267} 2268 2269binder::Status InstalldNativeService::isQuotaSupported( 2270 const std::unique_ptr<std::string>& volumeUuid, bool* _aidl_return) { 2271 *_aidl_return = !findQuotaDeviceForUuid(volumeUuid).empty(); 2272 return ok(); 2273} 2274 2275} // namespace installd 2276} // namespace android 2277