InstalldNativeService.cpp revision 80a2125b85eaa0916daea7e90b016fe4f1b59924
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 char* PKG_LIB_POSTFIX = "/lib"; 76static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 77static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 78 79static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 80static constexpr const char* IDMAP_SUFFIX = "@idmap"; 81 82// NOTE: keep in sync with Installer 83static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 84static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 85static constexpr int FLAG_USE_QUOTA = 1 << 12; 86static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13; 87static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 14; 88 89#define MIN_RESTRICTED_HOME_SDK_VERSION 24 // > M 90namespace { 91 92constexpr const char* kDump = "android.permission.DUMP"; 93 94static binder::Status ok() { 95 return binder::Status::ok(); 96} 97 98static binder::Status exception(uint32_t code, const std::string& msg) { 99 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 100} 101 102static binder::Status error() { 103 return binder::Status::fromServiceSpecificError(errno); 104} 105 106static binder::Status error(const std::string& msg) { 107 PLOG(ERROR) << msg; 108 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 109} 110 111static binder::Status error(uint32_t code, const std::string& msg) { 112 LOG(ERROR) << msg << " (" << code << ")"; 113 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 114} 115 116binder::Status checkPermission(const char* permission) { 117 pid_t pid; 118 uid_t uid; 119 120 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 121 reinterpret_cast<int32_t*>(&uid))) { 122 return ok(); 123 } else { 124 return exception(binder::Status::EX_SECURITY, 125 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 126 } 127} 128 129binder::Status checkUid(uid_t expectedUid) { 130 uid_t uid = IPCThreadState::self()->getCallingUid(); 131 if (uid == expectedUid || uid == AID_ROOT) { 132 return ok(); 133 } else { 134 return exception(binder::Status::EX_SECURITY, 135 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 136 } 137} 138 139binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 140 if (!uuid || is_valid_filename(*uuid)) { 141 return ok(); 142 } else { 143 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 144 StringPrintf("UUID %s is malformed", uuid->c_str())); 145 } 146} 147 148binder::Status checkArgumentPackageName(const std::string& packageName) { 149 if (is_valid_package_name(packageName.c_str())) { 150 return ok(); 151 } else { 152 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 153 StringPrintf("Package name %s is malformed", packageName.c_str())); 154 } 155} 156 157#define ENFORCE_UID(uid) { \ 158 binder::Status status = checkUid((uid)); \ 159 if (!status.isOk()) { \ 160 return status; \ 161 } \ 162} 163 164#define CHECK_ARGUMENT_UUID(uuid) { \ 165 binder::Status status = checkArgumentUuid((uuid)); \ 166 if (!status.isOk()) { \ 167 return status; \ 168 } \ 169} 170 171#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 172 binder::Status status = \ 173 checkArgumentPackageName((packageName)); \ 174 if (!status.isOk()) { \ 175 return status; \ 176 } \ 177} 178 179} // namespace 180 181status_t InstalldNativeService::start() { 182 IPCThreadState::self()->disableBackgroundScheduling(true); 183 status_t ret = BinderService<InstalldNativeService>::publish(); 184 if (ret != android::OK) { 185 return ret; 186 } 187 sp<ProcessState> ps(ProcessState::self()); 188 ps->startThreadPool(); 189 ps->giveThreadPoolName(); 190 return android::OK; 191} 192 193status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 194 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 195 const binder::Status dump_permission = checkPermission(kDump); 196 if (!dump_permission.isOk()) { 197 out << dump_permission.toString8() << endl; 198 return PERMISSION_DENIED; 199 } 200 std::lock_guard<std::recursive_mutex> lock(mLock); 201 202 out << "installd is happy!" << endl; 203 204 out << endl << "Devices with quota support:" << endl; 205 for (const auto& n : mQuotaDevices) { 206 out << " " << n.first << " = " << n.second << endl; 207 } 208 209 out << endl << "Per-UID cache quotas:" << endl; 210 for (const auto& n : mCacheQuotas) { 211 out << " " << n.first << " = " << n.second << endl; 212 } 213 214 out << endl; 215 out.flush(); 216 217 return NO_ERROR; 218} 219 220/** 221 * Perform restorecon of the given path, but only perform recursive restorecon 222 * if the label of that top-level file actually changed. This can save us 223 * significant time by avoiding no-op traversals of large filesystem trees. 224 */ 225static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 226 bool existing) { 227 int res = 0; 228 char* before = nullptr; 229 char* after = nullptr; 230 231 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 232 // libselinux. Not needed here. 233 234 if (lgetfilecon(path.c_str(), &before) < 0) { 235 PLOG(ERROR) << "Failed before getfilecon for " << path; 236 goto fail; 237 } 238 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 239 PLOG(ERROR) << "Failed top-level restorecon for " << path; 240 goto fail; 241 } 242 if (lgetfilecon(path.c_str(), &after) < 0) { 243 PLOG(ERROR) << "Failed after getfilecon for " << path; 244 goto fail; 245 } 246 247 // If the initial top-level restorecon above changed the label, then go 248 // back and restorecon everything recursively 249 if (strcmp(before, after)) { 250 if (existing) { 251 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 252 << path << "; running recursive restorecon"; 253 } 254 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 255 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 256 PLOG(ERROR) << "Failed recursive restorecon for " << path; 257 goto fail; 258 } 259 } 260 261 goto done; 262fail: 263 res = -1; 264done: 265 free(before); 266 free(after); 267 return res; 268} 269 270static int restorecon_app_data_lazy(const std::string& parent, const char* name, 271 const std::string& seInfo, uid_t uid, bool existing) { 272 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 273 existing); 274} 275 276static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 277 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 278 PLOG(ERROR) << "Failed to prepare " << path; 279 return -1; 280 } 281 return 0; 282} 283 284binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 285 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 286 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 287 ENFORCE_UID(AID_SYSTEM); 288 CHECK_ARGUMENT_UUID(uuid); 289 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 290 std::lock_guard<std::recursive_mutex> lock(mLock); 291 292 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 293 const char* pkgname = packageName.c_str(); 294 295 // Assume invalid inode unless filled in below 296 if (_aidl_return != nullptr) *_aidl_return = -1; 297 298 int32_t uid = multiuser_get_uid(userId, appId); 299 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 300 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 301 302 // If UID doesn't have a specific cache GID, use UID value 303 if (cacheGid == -1) { 304 cacheGid = uid; 305 } 306 307 if (flags & FLAG_STORAGE_CE) { 308 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 309 bool existing = (access(path.c_str(), F_OK) == 0); 310 311 if (prepare_app_dir(path, targetMode, uid) || 312 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 313 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 314 return error("Failed to prepare " + path); 315 } 316 317 // Consider restorecon over contents if label changed 318 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 319 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 320 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 321 return error("Failed to restorecon " + path); 322 } 323 324 // Remember inode numbers of cache directories so that we can clear 325 // contents while CE storage is locked 326 if (write_path_inode(path, "cache", kXattrInodeCache) || 327 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 328 return error("Failed to write_path_inode for " + path); 329 } 330 331 // And return the CE inode of the top-level data directory so we can 332 // clear contents while CE storage is locked 333 if ((_aidl_return != nullptr) 334 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 335 return error("Failed to get_path_inode for " + path); 336 } 337 } 338 if (flags & FLAG_STORAGE_DE) { 339 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 340 bool existing = (access(path.c_str(), F_OK) == 0); 341 342 if (prepare_app_dir(path, targetMode, uid) || 343 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 344 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 345 return error("Failed to prepare " + path); 346 } 347 348 // Consider restorecon over contents if label changed 349 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 350 return error("Failed to restorecon " + path); 351 } 352 353 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 354 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 355 // read-write-execute only for the app user. 356 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 357 return error("Failed to prepare " + profile_path); 358 } 359 std::string profile_file = create_primary_profile(profile_path); 360 // read-write only for the app user. 361 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 362 return error("Failed to prepare " + profile_path); 363 } 364 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 365 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 366 // profiles. 367 int shared_app_gid = multiuser_get_shared_gid(0, appId); 368 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 369 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 370 return error("Failed to prepare " + ref_profile_path); 371 } 372 } 373 } 374 return ok(); 375} 376 377binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 378 const std::string& packageName, int32_t userId, int32_t flags) { 379 ENFORCE_UID(AID_SYSTEM); 380 CHECK_ARGUMENT_UUID(uuid); 381 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 382 std::lock_guard<std::recursive_mutex> lock(mLock); 383 384 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 385 const char* pkgname = packageName.c_str(); 386 387 // This method only exists to upgrade system apps that have requested 388 // forceDeviceEncrypted, so their default storage always lives in a 389 // consistent location. This only works on non-FBE devices, since we 390 // never want to risk exposing data on a device with real CE/DE storage. 391 392 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 393 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 394 395 // If neither directory is marked as default, assume CE is default 396 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 397 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 398 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 399 return error("Failed to mark default storage " + ce_path); 400 } 401 } 402 403 // Migrate default data location if needed 404 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 405 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 406 407 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 408 LOG(WARNING) << "Requested default storage " << target 409 << " is not active; migrating from " << source; 410 if (delete_dir_contents_and_dir(target) != 0) { 411 return error("Failed to delete " + target); 412 } 413 if (rename(source.c_str(), target.c_str()) != 0) { 414 return error("Failed to rename " + source + " to " + target); 415 } 416 } 417 418 return ok(); 419} 420 421 422binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 423 ENFORCE_UID(AID_SYSTEM); 424 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 425 std::lock_guard<std::recursive_mutex> lock(mLock); 426 427 const char* pkgname = packageName.c_str(); 428 binder::Status res = ok(); 429 if (!clear_reference_profile(pkgname)) { 430 res = error("Failed to clear reference profile for " + packageName); 431 } 432 if (!clear_current_profiles(pkgname)) { 433 res = error("Failed to clear current profiles for " + packageName); 434 } 435 return res; 436} 437 438binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 439 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 440 ENFORCE_UID(AID_SYSTEM); 441 CHECK_ARGUMENT_UUID(uuid); 442 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 443 std::lock_guard<std::recursive_mutex> lock(mLock); 444 445 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 446 const char* pkgname = packageName.c_str(); 447 448 binder::Status res = ok(); 449 if (flags & FLAG_STORAGE_CE) { 450 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 451 if (flags & FLAG_CLEAR_CACHE_ONLY) { 452 path = read_path_inode(path, "cache", kXattrInodeCache); 453 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 454 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 455 } 456 if (access(path.c_str(), F_OK) == 0) { 457 if (delete_dir_contents(path) != 0) { 458 res = error("Failed to delete contents of " + path); 459 } 460 } 461 } 462 if (flags & FLAG_STORAGE_DE) { 463 std::string suffix = ""; 464 bool only_cache = false; 465 if (flags & FLAG_CLEAR_CACHE_ONLY) { 466 suffix = CACHE_DIR_POSTFIX; 467 only_cache = true; 468 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 469 suffix = CODE_CACHE_DIR_POSTFIX; 470 only_cache = true; 471 } 472 473 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 474 if (access(path.c_str(), F_OK) == 0) { 475 if (delete_dir_contents(path) != 0) { 476 res = error("Failed to delete contents of " + path); 477 } 478 } 479 if (!only_cache) { 480 if (!clear_current_profile(pkgname, userId)) { 481 res = error("Failed to clear current profile for " + packageName); 482 } 483 } 484 } 485 return res; 486} 487 488static int destroy_app_reference_profile(const char *pkgname) { 489 return delete_dir_contents_and_dir( 490 create_data_ref_profile_package_path(pkgname), 491 /*ignore_if_missing*/ true); 492} 493 494static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 495 return delete_dir_contents_and_dir( 496 create_data_user_profile_package_path(userid, pkgname), 497 /*ignore_if_missing*/ true); 498} 499 500binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 501 ENFORCE_UID(AID_SYSTEM); 502 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 503 std::lock_guard<std::recursive_mutex> lock(mLock); 504 505 const char* pkgname = packageName.c_str(); 506 binder::Status res = ok(); 507 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 508 for (auto user : users) { 509 if (destroy_app_current_profiles(pkgname, user) != 0) { 510 res = error("Failed to destroy current profiles for " + packageName); 511 } 512 } 513 if (destroy_app_reference_profile(pkgname) != 0) { 514 res = error("Failed to destroy reference profile for " + packageName); 515 } 516 return res; 517} 518 519binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 520 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 521 ENFORCE_UID(AID_SYSTEM); 522 CHECK_ARGUMENT_UUID(uuid); 523 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 524 std::lock_guard<std::recursive_mutex> lock(mLock); 525 526 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 527 const char* pkgname = packageName.c_str(); 528 529 binder::Status res = ok(); 530 if (flags & FLAG_STORAGE_CE) { 531 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 532 if (delete_dir_contents_and_dir(path) != 0) { 533 res = error("Failed to delete " + path); 534 } 535 } 536 if (flags & FLAG_STORAGE_DE) { 537 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 538 if (delete_dir_contents_and_dir(path) != 0) { 539 res = error("Failed to delete " + path); 540 } 541 destroy_app_current_profiles(pkgname, userId); 542 // TODO(calin): If the package is still installed by other users it's probably 543 // beneficial to keep the reference profile around. 544 // Verify if it's ok to do that. 545 destroy_app_reference_profile(pkgname); 546 } 547 return res; 548} 549 550binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 551 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 552 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 553 int32_t targetSdkVersion) { 554 ENFORCE_UID(AID_SYSTEM); 555 CHECK_ARGUMENT_UUID(fromUuid); 556 CHECK_ARGUMENT_UUID(toUuid); 557 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 558 std::lock_guard<std::recursive_mutex> lock(mLock); 559 560 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 561 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 562 const char* package_name = packageName.c_str(); 563 const char* data_app_name = dataAppName.c_str(); 564 565 binder::Status res = ok(); 566 std::vector<userid_t> users = get_known_users(from_uuid); 567 568 // Copy app 569 { 570 auto from = create_data_app_package_path(from_uuid, data_app_name); 571 auto to = create_data_app_package_path(to_uuid, data_app_name); 572 auto to_parent = create_data_app_path(to_uuid); 573 574 char *argv[] = { 575 (char*) kCpPath, 576 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 577 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 578 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 579 (char*) "-P", /* Do not follow symlinks [default] */ 580 (char*) "-d", /* don't dereference symlinks */ 581 (char*) from.c_str(), 582 (char*) to_parent.c_str() 583 }; 584 585 LOG(DEBUG) << "Copying " << from << " to " << to; 586 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 587 if (rc != 0) { 588 res = error(rc, "Failed copying " + from + " to " + to); 589 goto fail; 590 } 591 592 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 593 res = error("Failed to restorecon " + to); 594 goto fail; 595 } 596 } 597 598 // Copy private data for all known users 599 for (auto user : users) { 600 601 // Data source may not exist for all users; that's okay 602 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 603 if (access(from_ce.c_str(), F_OK) != 0) { 604 LOG(INFO) << "Missing source " << from_ce; 605 continue; 606 } 607 608 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 609 seInfo, targetSdkVersion, nullptr).isOk()) { 610 res = error("Failed to create package target"); 611 goto fail; 612 } 613 614 char *argv[] = { 615 (char*) kCpPath, 616 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 617 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 618 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 619 (char*) "-P", /* Do not follow symlinks [default] */ 620 (char*) "-d", /* don't dereference symlinks */ 621 nullptr, 622 nullptr 623 }; 624 625 { 626 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 627 auto to = create_data_user_de_path(to_uuid, user); 628 argv[6] = (char*) from.c_str(); 629 argv[7] = (char*) to.c_str(); 630 631 LOG(DEBUG) << "Copying " << from << " to " << to; 632 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 633 if (rc != 0) { 634 res = error(rc, "Failed copying " + from + " to " + to); 635 goto fail; 636 } 637 } 638 { 639 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 640 auto to = create_data_user_ce_path(to_uuid, user); 641 argv[6] = (char*) from.c_str(); 642 argv[7] = (char*) to.c_str(); 643 644 LOG(DEBUG) << "Copying " << from << " to " << to; 645 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 646 if (rc != 0) { 647 res = error(rc, "Failed copying " + from + " to " + to); 648 goto fail; 649 } 650 } 651 652 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 653 appId, seInfo).isOk()) { 654 res = error("Failed to restorecon"); 655 goto fail; 656 } 657 } 658 659 // We let the framework scan the new location and persist that before 660 // deleting the data in the old location; this ordering ensures that 661 // we can recover from things like battery pulls. 662 return ok(); 663 664fail: 665 // Nuke everything we might have already copied 666 { 667 auto to = create_data_app_package_path(to_uuid, data_app_name); 668 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 669 LOG(WARNING) << "Failed to rollback " << to; 670 } 671 } 672 for (auto user : users) { 673 { 674 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 675 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 676 LOG(WARNING) << "Failed to rollback " << to; 677 } 678 } 679 { 680 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 681 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 682 LOG(WARNING) << "Failed to rollback " << to; 683 } 684 } 685 } 686 return res; 687} 688 689binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 690 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 691 ENFORCE_UID(AID_SYSTEM); 692 CHECK_ARGUMENT_UUID(uuid); 693 std::lock_guard<std::recursive_mutex> lock(mLock); 694 695 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 696 if (flags & FLAG_STORAGE_DE) { 697 if (uuid_ == nullptr) { 698 if (ensure_config_user_dirs(userId) != 0) { 699 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 700 } 701 } 702 } 703 return ok(); 704} 705 706binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 707 int32_t userId, int32_t flags) { 708 ENFORCE_UID(AID_SYSTEM); 709 CHECK_ARGUMENT_UUID(uuid); 710 std::lock_guard<std::recursive_mutex> lock(mLock); 711 712 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 713 binder::Status res = ok(); 714 if (flags & FLAG_STORAGE_DE) { 715 auto path = create_data_user_de_path(uuid_, userId); 716 if (delete_dir_contents_and_dir(path, true) != 0) { 717 res = error("Failed to delete " + path); 718 } 719 if (uuid_ == nullptr) { 720 path = create_data_misc_legacy_path(userId); 721 if (delete_dir_contents_and_dir(path, true) != 0) { 722 res = error("Failed to delete " + path); 723 } 724 path = create_data_user_profile_path(userId); 725 if (delete_dir_contents_and_dir(path, true) != 0) { 726 res = error("Failed to delete " + path); 727 } 728 } 729 } 730 if (flags & FLAG_STORAGE_CE) { 731 auto path = create_data_user_ce_path(uuid_, userId); 732 if (delete_dir_contents_and_dir(path, true) != 0) { 733 res = error("Failed to delete " + path); 734 } 735 path = create_data_media_path(uuid_, userId); 736 if (delete_dir_contents_and_dir(path, true) != 0) { 737 res = error("Failed to delete " + path); 738 } 739 } 740 return res; 741} 742 743/* Try to ensure free_size bytes of storage are available. 744 * Returns 0 on success. 745 * This is rather simple-minded because doing a full LRU would 746 * be potentially memory-intensive, and without atime it would 747 * also require that apps constantly modify file metadata even 748 * when just reading from the cache, which is pretty awful. 749 */ 750binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 751 int64_t freeStorageSize, int32_t flags) { 752 ENFORCE_UID(AID_SYSTEM); 753 CHECK_ARGUMENT_UUID(uuid); 754 std::lock_guard<std::recursive_mutex> lock(mLock); 755 756 // TODO: remove this once framework is more robust 757 invalidateMounts(); 758 759 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 760 auto data_path = create_data_path(uuid_); 761 auto device = findQuotaDeviceForUuid(uuid); 762 auto noop = (flags & FLAG_FREE_CACHE_NOOP); 763 764 int64_t free = data_disk_free(data_path); 765 int64_t needed = freeStorageSize - free; 766 if (free < 0) { 767 return error("Failed to determine free space for " + data_path); 768 } else if (free >= freeStorageSize) { 769 return ok(); 770 } 771 772 LOG(DEBUG) << "Found " << data_path << " with " << free << " free; caller requested " 773 << freeStorageSize; 774 775 if (flags & FLAG_FREE_CACHE_V2) { 776 // This new cache strategy fairly removes files from UIDs by deleting 777 // files from the UIDs which are most over their allocated quota 778 779 // 1. Create trackers for every known UID 780 ATRACE_BEGIN("create"); 781 std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; 782 for (auto user : get_known_users(uuid_)) { 783 FTS *fts; 784 FTSENT *p; 785 char *argv[] = { 786 (char*) create_data_user_ce_path(uuid_, user).c_str(), 787 (char*) create_data_user_de_path(uuid_, user).c_str(), 788 nullptr 789 }; 790 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 791 return error("Failed to fts_open"); 792 } 793 while ((p = fts_read(fts)) != NULL) { 794 if (p->fts_info == FTS_D && p->fts_level == 1) { 795 uid_t uid = p->fts_statp->st_uid; 796 auto search = trackers.find(uid); 797 if (search != trackers.end()) { 798 search->second->addDataPath(p->fts_path); 799 } else { 800 auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( 801 multiuser_get_user_id(uid), multiuser_get_app_id(uid), device)); 802 tracker->addDataPath(p->fts_path); 803 tracker->cacheQuota = mCacheQuotas[uid]; 804 if (tracker->cacheQuota == 0) { 805 LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; 806 tracker->cacheQuota = 67108864; 807 } 808 trackers[uid] = tracker; 809 } 810 fts_set(fts, p, FTS_SKIP); 811 } 812 } 813 fts_close(fts); 814 } 815 ATRACE_END(); 816 817 // 2. Populate tracker stats and insert into priority queue 818 ATRACE_BEGIN("populate"); 819 auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { 820 return (left->getCacheRatio() < right->getCacheRatio()); 821 }; 822 std::priority_queue<std::shared_ptr<CacheTracker>, 823 std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); 824 for (const auto& it : trackers) { 825 it.second->loadStats(); 826 queue.push(it.second); 827 } 828 ATRACE_END(); 829 830 // 3. Bounce across the queue, freeing items from whichever tracker is 831 // the most over their assigned quota 832 ATRACE_BEGIN("bounce"); 833 std::shared_ptr<CacheTracker> active; 834 while (active || !queue.empty()) { 835 // Find the best tracker to work with; this might involve swapping 836 // if the active tracker is no longer the most over quota 837 bool nextBetter = active && !queue.empty() 838 && active->getCacheRatio() < queue.top()->getCacheRatio(); 839 if (!active || nextBetter) { 840 if (active) { 841 // Current tracker still has items, so we'll consider it 842 // again later once it bubbles up to surface 843 queue.push(active); 844 } 845 active = queue.top(); queue.pop(); 846 active->ensureItems(); 847 continue; 848 } 849 850 // If no items remain, go find another tracker 851 if (active->items.empty()) { 852 active = nullptr; 853 continue; 854 } else { 855 auto item = active->items.back(); 856 active->items.pop_back(); 857 858 LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); 859 if (!noop) { 860 item->purge(); 861 } 862 active->cacheUsed -= item->size; 863 needed -= item->size; 864 } 865 866 // Verify that we're actually done before bailing, since sneaky 867 // apps might be using hardlinks 868 if (needed <= 0) { 869 free = data_disk_free(data_path); 870 needed = freeStorageSize - free; 871 if (needed <= 0) { 872 break; 873 } else { 874 LOG(WARNING) << "Expected to be done but still need " << needed; 875 } 876 } 877 } 878 ATRACE_END(); 879 880 } else { 881 ATRACE_BEGIN("start"); 882 cache_t* cache = start_cache_collection(); 883 ATRACE_END(); 884 885 ATRACE_BEGIN("add"); 886 for (auto user : get_known_users(uuid_)) { 887 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 888 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 889 add_cache_files(cache, 890 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 891 } 892 ATRACE_END(); 893 894 ATRACE_BEGIN("clear"); 895 clear_cache_files(data_path, cache, freeStorageSize); 896 ATRACE_END(); 897 898 ATRACE_BEGIN("finish"); 899 finish_cache_collection(cache); 900 ATRACE_END(); 901 } 902 903 free = data_disk_free(data_path); 904 if (free >= freeStorageSize) { 905 return ok(); 906 } else { 907 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 908 freeStorageSize, data_path.c_str(), free)); 909 } 910} 911 912binder::Status InstalldNativeService::rmdex(const std::string& codePath, 913 const std::string& instructionSet) { 914 ENFORCE_UID(AID_SYSTEM); 915 std::lock_guard<std::recursive_mutex> lock(mLock); 916 917 char dex_path[PKG_PATH_MAX]; 918 919 const char* path = codePath.c_str(); 920 const char* instruction_set = instructionSet.c_str(); 921 922 if (validate_apk_path(path) && validate_system_app_path(path)) { 923 return error("Invalid path " + codePath); 924 } 925 926 if (!create_cache_path(dex_path, path, instruction_set)) { 927 return error("Failed to create cache path for " + codePath); 928 } 929 930 ALOGV("unlink %s\n", dex_path); 931 if (unlink(dex_path) < 0) { 932 return error(StringPrintf("Failed to unlink %s", dex_path)); 933 } else { 934 return ok(); 935 } 936} 937 938struct stats { 939 int64_t codeSize; 940 int64_t dataSize; 941 int64_t cacheSize; 942}; 943 944#if MEASURE_DEBUG 945static std::string toString(std::vector<int64_t> values) { 946 std::stringstream res; 947 res << "["; 948 for (size_t i = 0; i < values.size(); i++) { 949 res << values[i]; 950 if (i < values.size() - 1) { 951 res << ","; 952 } 953 } 954 res << "]"; 955 return res.str(); 956} 957#endif 958 959static void collectQuotaStats(const std::string& device, int32_t userId, 960 int32_t appId, struct stats* stats, struct stats* extStats) { 961 if (device.empty()) return; 962 963 struct dqblk dq; 964 965 uid_t uid = multiuser_get_uid(userId, appId); 966 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 967 reinterpret_cast<char*>(&dq)) != 0) { 968 if (errno != ESRCH) { 969 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 970 } 971 } else { 972#if MEASURE_DEBUG 973 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 974#endif 975 stats->dataSize += dq.dqb_curspace; 976 } 977 978 int cacheGid = multiuser_get_cache_gid(userId, appId); 979 if (cacheGid != -1) { 980 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 981 reinterpret_cast<char*>(&dq)) != 0) { 982 if (errno != ESRCH) { 983 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 984 } 985 } else { 986#if MEASURE_DEBUG 987 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 988#endif 989 stats->cacheSize += dq.dqb_curspace; 990 } 991 } 992 993 int extGid = multiuser_get_ext_gid(userId, appId); 994 if (extGid != -1) { 995 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extGid, 996 reinterpret_cast<char*>(&dq)) != 0) { 997 if (errno != ESRCH) { 998 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extGid; 999 } 1000 } else { 1001#if MEASURE_DEBUG 1002 LOG(DEBUG) << "quotactl() for GID " << extGid << " " << dq.dqb_curspace; 1003#endif 1004 extStats->dataSize += dq.dqb_curspace; 1005 } 1006 } 1007 1008 int sharedGid = multiuser_get_shared_gid(userId, appId); 1009 if (sharedGid != -1) { 1010 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 1011 reinterpret_cast<char*>(&dq)) != 0) { 1012 if (errno != ESRCH) { 1013 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 1014 } 1015 } else { 1016#if MEASURE_DEBUG 1017 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 1018#endif 1019 stats->codeSize += dq.dqb_curspace; 1020 } 1021 } 1022} 1023 1024static void collectManualStats(const std::string& path, struct stats* stats) { 1025 DIR *d; 1026 int dfd; 1027 struct dirent *de; 1028 struct stat s; 1029 1030 d = opendir(path.c_str()); 1031 if (d == nullptr) { 1032 if (errno != ENOENT) { 1033 PLOG(WARNING) << "Failed to open " << path; 1034 } 1035 return; 1036 } 1037 dfd = dirfd(d); 1038 while ((de = readdir(d))) { 1039 const char *name = de->d_name; 1040 1041 int64_t size = 0; 1042 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 1043 size = s.st_blocks * 512; 1044 } 1045 1046 if (de->d_type == DT_DIR) { 1047 if (!strcmp(name, ".")) { 1048 // Don't recurse, but still count node size 1049 } else if (!strcmp(name, "..")) { 1050 // Don't recurse or count node size 1051 continue; 1052 } else { 1053 // Measure all children nodes 1054 size = 0; 1055 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1056 } 1057 1058 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1059 stats->cacheSize += size; 1060 } 1061 } 1062 1063 // Legacy symlink isn't owned by app 1064 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1065 continue; 1066 } 1067 1068 // Everything found inside is considered data 1069 stats->dataSize += size; 1070 } 1071 closedir(d); 1072} 1073 1074static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1075 bool exclude_apps = false) { 1076 DIR *d; 1077 int dfd; 1078 struct dirent *de; 1079 struct stat s; 1080 1081 d = opendir(path.c_str()); 1082 if (d == nullptr) { 1083 if (errno != ENOENT) { 1084 PLOG(WARNING) << "Failed to open " << path; 1085 } 1086 return; 1087 } 1088 dfd = dirfd(d); 1089 while ((de = readdir(d))) { 1090 if (de->d_type == DT_DIR) { 1091 const char *name = de->d_name; 1092 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1093 continue; 1094 } 1095 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1096 continue; 1097 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1098 continue; 1099 } else { 1100 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1101 } 1102 } 1103 } 1104 closedir(d); 1105} 1106 1107static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { 1108 FTS *fts; 1109 FTSENT *p; 1110 char *argv[] = { (char*) path.c_str(), nullptr }; 1111 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1112 PLOG(ERROR) << "Failed to fts_open " << path; 1113 return; 1114 } 1115 while ((p = fts_read(fts)) != NULL) { 1116 p->fts_number = p->fts_parent->fts_number; 1117 switch (p->fts_info) { 1118 case FTS_D: 1119 if (p->fts_level == 4 1120 && !strcmp(p->fts_name, "cache") 1121 && !strcmp(p->fts_parent->fts_parent->fts_name, "data") 1122 && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { 1123 p->fts_number = 1; 1124 } 1125 // Fall through to count the directory 1126 case FTS_DEFAULT: 1127 case FTS_F: 1128 case FTS_SL: 1129 case FTS_SLNONE: 1130 int64_t size = (p->fts_statp->st_blocks * 512); 1131 if (p->fts_number == 1) { 1132 stats->cacheSize += size; 1133 } 1134 stats->dataSize += size; 1135 break; 1136 } 1137 } 1138 fts_close(fts); 1139} 1140 1141binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1142 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1143 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1144 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1145 ENFORCE_UID(AID_SYSTEM); 1146 CHECK_ARGUMENT_UUID(uuid); 1147 for (auto packageName : packageNames) { 1148 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1149 } 1150 std::lock_guard<std::recursive_mutex> lock(mLock); 1151 1152 // When modifying this logic, always verify using tests: 1153 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1154 1155#if MEASURE_DEBUG 1156 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1157#endif 1158 1159 // Here's a summary of the common storage locations across the platform, 1160 // and how they're each tagged: 1161 // 1162 // /data/app/com.example UID system 1163 // /data/app/com.example/oat UID system 1164 // /data/user/0/com.example UID u0_a10 GID u0_a10 1165 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1166 // /data/media/0/foo.txt UID u0_media_rw 1167 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1168 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1169 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1170 // /data/media/obb/com.example UID system 1171 1172 struct stats stats; 1173 struct stats extStats; 1174 memset(&stats, 0, sizeof(stats)); 1175 memset(&extStats, 0, sizeof(extStats)); 1176 1177 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1178 1179 auto device = findQuotaDeviceForUuid(uuid); 1180 if (device.empty()) { 1181 flags &= ~FLAG_USE_QUOTA; 1182 } 1183 1184 ATRACE_BEGIN("obb"); 1185 for (auto packageName : packageNames) { 1186 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1187 calculate_tree_size(obbCodePath, &extStats.codeSize); 1188 } 1189 ATRACE_END(); 1190 1191 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1192 ATRACE_BEGIN("code"); 1193 for (auto codePath : codePaths) { 1194 calculate_tree_size(codePath, &stats.codeSize, -1, 1195 multiuser_get_shared_gid(userId, appId)); 1196 } 1197 ATRACE_END(); 1198 1199 ATRACE_BEGIN("quota"); 1200 collectQuotaStats(device, userId, appId, &stats, &extStats); 1201 ATRACE_END(); 1202 1203 } else { 1204 ATRACE_BEGIN("code"); 1205 for (auto codePath : codePaths) { 1206 calculate_tree_size(codePath, &stats.codeSize); 1207 } 1208 ATRACE_END(); 1209 1210 for (size_t i = 0; i < packageNames.size(); i++) { 1211 const char* pkgname = packageNames[i].c_str(); 1212 1213 ATRACE_BEGIN("data"); 1214 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1215 collectManualStats(cePath, &stats); 1216 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1217 collectManualStats(dePath, &stats); 1218 ATRACE_END(); 1219 1220 ATRACE_BEGIN("profiles"); 1221 auto userProfilePath = create_data_user_profile_package_path(userId, pkgname); 1222 calculate_tree_size(userProfilePath, &stats.dataSize); 1223 auto refProfilePath = create_data_ref_profile_package_path(pkgname); 1224 calculate_tree_size(refProfilePath, &stats.codeSize); 1225 ATRACE_END(); 1226 1227 ATRACE_BEGIN("external"); 1228 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1229 collectManualStats(extPath, &extStats); 1230 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1231 calculate_tree_size(mediaPath, &extStats.dataSize); 1232 ATRACE_END(); 1233 } 1234 1235 ATRACE_BEGIN("dalvik"); 1236 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1237 if (sharedGid != -1) { 1238 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1239 sharedGid, -1); 1240 } 1241 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1242 multiuser_get_uid(userId, appId), -1); 1243 ATRACE_END(); 1244 } 1245 1246 std::vector<int64_t> ret; 1247 ret.push_back(stats.codeSize); 1248 ret.push_back(stats.dataSize); 1249 ret.push_back(stats.cacheSize); 1250 ret.push_back(extStats.codeSize); 1251 ret.push_back(extStats.dataSize); 1252 ret.push_back(extStats.cacheSize); 1253#if MEASURE_DEBUG 1254 LOG(DEBUG) << "Final result " << toString(ret); 1255#endif 1256 *_aidl_return = ret; 1257 return ok(); 1258} 1259 1260binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1261 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1262 std::vector<int64_t>* _aidl_return) { 1263 ENFORCE_UID(AID_SYSTEM); 1264 CHECK_ARGUMENT_UUID(uuid); 1265 std::lock_guard<std::recursive_mutex> lock(mLock); 1266 1267 // When modifying this logic, always verify using tests: 1268 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1269 1270#if MEASURE_DEBUG 1271 LOG(INFO) << "Measuring user " << userId; 1272#endif 1273 1274 struct stats stats; 1275 struct stats extStats; 1276 memset(&stats, 0, sizeof(stats)); 1277 memset(&extStats, 0, sizeof(extStats)); 1278 1279 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1280 1281 auto device = findQuotaDeviceForUuid(uuid); 1282 if (device.empty()) { 1283 flags &= ~FLAG_USE_QUOTA; 1284 } 1285 1286 if (flags & FLAG_USE_QUOTA) { 1287 struct dqblk dq; 1288 1289 ATRACE_BEGIN("obb"); 1290 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), AID_MEDIA_OBB, 1291 reinterpret_cast<char*>(&dq)) != 0) { 1292 if (errno != ESRCH) { 1293 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << AID_MEDIA_OBB; 1294 } 1295 } else { 1296#if MEASURE_DEBUG 1297 LOG(DEBUG) << "quotactl() for GID " << AID_MEDIA_OBB << " " << dq.dqb_curspace; 1298#endif 1299 extStats.codeSize += dq.dqb_curspace; 1300 } 1301 ATRACE_END(); 1302 1303 ATRACE_BEGIN("code"); 1304 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1305 ATRACE_END(); 1306 1307 ATRACE_BEGIN("data"); 1308 auto cePath = create_data_user_ce_path(uuid_, userId); 1309 collectManualStatsForUser(cePath, &stats, true); 1310 auto dePath = create_data_user_de_path(uuid_, userId); 1311 collectManualStatsForUser(dePath, &stats, true); 1312 ATRACE_END(); 1313 1314 ATRACE_BEGIN("profile"); 1315 auto userProfilePath = create_data_user_profile_path(userId); 1316 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1317 auto refProfilePath = create_data_ref_profile_path(); 1318 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1319 ATRACE_END(); 1320 1321 ATRACE_BEGIN("external"); 1322 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1323 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1324 reinterpret_cast<char*>(&dq)) != 0) { 1325 if (errno != ESRCH) { 1326 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1327 } 1328 } else { 1329#if MEASURE_DEBUG 1330 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1331#endif 1332 extStats.dataSize += dq.dqb_curspace; 1333 } 1334 ATRACE_END(); 1335 1336 ATRACE_BEGIN("dalvik"); 1337 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1338 -1, -1, true); 1339 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize, 1340 -1, -1, true); 1341 ATRACE_END(); 1342 1343 ATRACE_BEGIN("quota"); 1344 for (auto appId : appIds) { 1345 if (appId >= AID_APP_START) { 1346 collectQuotaStats(device, userId, appId, &stats, &extStats); 1347#if MEASURE_DEBUG 1348 // Sleep to make sure we don't lose logs 1349 usleep(1); 1350#endif 1351 } 1352 } 1353 ATRACE_END(); 1354 } else { 1355 ATRACE_BEGIN("obb"); 1356 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1357 calculate_tree_size(obbPath, &extStats.codeSize); 1358 ATRACE_END(); 1359 1360 ATRACE_BEGIN("code"); 1361 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1362 ATRACE_END(); 1363 1364 ATRACE_BEGIN("data"); 1365 auto cePath = create_data_user_ce_path(uuid_, userId); 1366 collectManualStatsForUser(cePath, &stats); 1367 auto dePath = create_data_user_de_path(uuid_, userId); 1368 collectManualStatsForUser(dePath, &stats); 1369 ATRACE_END(); 1370 1371 ATRACE_BEGIN("profile"); 1372 auto userProfilePath = create_data_user_profile_path(userId); 1373 calculate_tree_size(userProfilePath, &stats.dataSize); 1374 auto refProfilePath = create_data_ref_profile_path(); 1375 calculate_tree_size(refProfilePath, &stats.codeSize); 1376 ATRACE_END(); 1377 1378 ATRACE_BEGIN("external"); 1379 auto dataMediaPath = create_data_media_path(uuid_, userId); 1380 collectManualExternalStatsForUser(dataMediaPath, &extStats); 1381#if MEASURE_DEBUG 1382 LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " 1383 << extStats.cacheSize; 1384#endif 1385 ATRACE_END(); 1386 1387 ATRACE_BEGIN("dalvik"); 1388 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1389 calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize); 1390 ATRACE_END(); 1391 } 1392 1393 std::vector<int64_t> ret; 1394 ret.push_back(stats.codeSize); 1395 ret.push_back(stats.dataSize); 1396 ret.push_back(stats.cacheSize); 1397 ret.push_back(extStats.codeSize); 1398 ret.push_back(extStats.dataSize); 1399 ret.push_back(extStats.cacheSize); 1400#if MEASURE_DEBUG 1401 LOG(DEBUG) << "Final result " << toString(ret); 1402#endif 1403 *_aidl_return = ret; 1404 return ok(); 1405} 1406 1407binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1408 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1409 ENFORCE_UID(AID_SYSTEM); 1410 CHECK_ARGUMENT_UUID(uuid); 1411 std::lock_guard<std::recursive_mutex> lock(mLock); 1412 1413 // When modifying this logic, always verify using tests: 1414 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1415 1416#if MEASURE_DEBUG 1417 LOG(INFO) << "Measuring external " << userId; 1418#endif 1419 1420 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1421 1422 int64_t totalSize = 0; 1423 int64_t audioSize = 0; 1424 int64_t videoSize = 0; 1425 int64_t imageSize = 0; 1426 1427 auto device = findQuotaDeviceForUuid(uuid); 1428 if (device.empty()) { 1429 flags &= ~FLAG_USE_QUOTA; 1430 } 1431 1432 if (flags & FLAG_USE_QUOTA) { 1433 struct dqblk dq; 1434 1435 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1436 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1437 reinterpret_cast<char*>(&dq)) != 0) { 1438 if (errno != ESRCH) { 1439 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1440 } 1441 } else { 1442#if MEASURE_DEBUG 1443 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1444#endif 1445 totalSize = dq.dqb_curspace; 1446 } 1447 1448 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1449 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1450 reinterpret_cast<char*>(&dq)) == 0) { 1451#if MEASURE_DEBUG 1452 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1453#endif 1454 audioSize = dq.dqb_curspace; 1455 } 1456 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1457 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1458 reinterpret_cast<char*>(&dq)) == 0) { 1459#if MEASURE_DEBUG 1460 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1461#endif 1462 videoSize = dq.dqb_curspace; 1463 } 1464 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1465 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1466 reinterpret_cast<char*>(&dq)) == 0) { 1467#if MEASURE_DEBUG 1468 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1469#endif 1470 imageSize = dq.dqb_curspace; 1471 } 1472 } else { 1473 FTS *fts; 1474 FTSENT *p; 1475 auto path = create_data_media_path(uuid_, userId); 1476 char *argv[] = { (char*) path.c_str(), nullptr }; 1477 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 1478 return error("Failed to fts_open " + path); 1479 } 1480 while ((p = fts_read(fts)) != NULL) { 1481 char* ext; 1482 int64_t size = (p->fts_statp->st_blocks * 512); 1483 switch (p->fts_info) { 1484 case FTS_F: 1485 // Only categorize files not belonging to apps 1486 if (p->fts_statp->st_gid < AID_APP_START) { 1487 ext = strrchr(p->fts_name, '.'); 1488 if (ext != nullptr) { 1489 switch (MatchExtension(++ext)) { 1490 case AID_MEDIA_AUDIO: audioSize += size; break; 1491 case AID_MEDIA_VIDEO: videoSize += size; break; 1492 case AID_MEDIA_IMAGE: imageSize += size; break; 1493 } 1494 } 1495 } 1496 // Fall through to always count against total 1497 case FTS_D: 1498 case FTS_DEFAULT: 1499 case FTS_SL: 1500 case FTS_SLNONE: 1501 totalSize += size; 1502 break; 1503 } 1504 } 1505 fts_close(fts); 1506 } 1507 1508 std::vector<int64_t> ret; 1509 ret.push_back(totalSize); 1510 ret.push_back(audioSize); 1511 ret.push_back(videoSize); 1512 ret.push_back(imageSize); 1513#if MEASURE_DEBUG 1514 LOG(DEBUG) << "Final result " << toString(ret); 1515#endif 1516 *_aidl_return = ret; 1517 return ok(); 1518} 1519 1520binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, 1521 int32_t userId, int32_t appId, int64_t cacheQuota) { 1522 ENFORCE_UID(AID_SYSTEM); 1523 CHECK_ARGUMENT_UUID(uuid); 1524 std::lock_guard<std::recursive_mutex> lock(mLock); 1525 1526 int32_t uid = multiuser_get_uid(userId, appId); 1527 mCacheQuotas[uid] = cacheQuota; 1528 1529 return ok(); 1530} 1531 1532// Dumps the contents of a profile file, using pkgname's dex files for pretty 1533// printing the result. 1534binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1535 const std::string& codePaths, bool* _aidl_return) { 1536 ENFORCE_UID(AID_SYSTEM); 1537 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1538 std::lock_guard<std::recursive_mutex> lock(mLock); 1539 1540 const char* pkgname = packageName.c_str(); 1541 const char* code_paths = codePaths.c_str(); 1542 1543 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1544 return ok(); 1545} 1546 1547// TODO: Consider returning error codes. 1548binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1549 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 *_aidl_return = analyse_profiles(uid, pkgname); 1556 return ok(); 1557} 1558 1559binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1560 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1561 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1562 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1563 const std::unique_ptr<std::string>& sharedLibraries) { 1564 ENFORCE_UID(AID_SYSTEM); 1565 CHECK_ARGUMENT_UUID(uuid); 1566 if (packageName && *packageName != "*") { 1567 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1568 } 1569 std::lock_guard<std::recursive_mutex> lock(mLock); 1570 1571 const char* apk_path = apkPath.c_str(); 1572 const char* pkgname = packageName ? packageName->c_str() : "*"; 1573 const char* instruction_set = instructionSet.c_str(); 1574 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1575 const char* compiler_filter = compilerFilter.c_str(); 1576 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1577 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1578 1579 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1580 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 1581 return res ? error(res, "Failed to dexopt") : ok(); 1582} 1583 1584binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1585 ENFORCE_UID(AID_SYSTEM); 1586 std::lock_guard<std::recursive_mutex> lock(mLock); 1587 1588 const char* instruction_set = instructionSet.c_str(); 1589 1590 char boot_marker_path[PKG_PATH_MAX]; 1591 sprintf(boot_marker_path, 1592 "%s/%s/%s/.booting", 1593 android_data_dir.path, 1594 DALVIK_CACHE, 1595 instruction_set); 1596 1597 ALOGV("mark_boot_complete : %s", boot_marker_path); 1598 if (unlink(boot_marker_path) != 0) { 1599 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1600 } 1601 return ok(); 1602} 1603 1604void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1605 struct stat* statbuf) 1606{ 1607 while (path[basepos] != 0) { 1608 if (path[basepos] == '/') { 1609 path[basepos] = 0; 1610 if (lstat(path, statbuf) < 0) { 1611 ALOGV("Making directory: %s\n", path); 1612 if (mkdir(path, mode) == 0) { 1613 chown(path, uid, gid); 1614 } else { 1615 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1616 } 1617 } 1618 path[basepos] = '/'; 1619 basepos++; 1620 } 1621 basepos++; 1622 } 1623} 1624 1625binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1626 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1627 const std::string& nativeLibPath32, int32_t userId) { 1628 ENFORCE_UID(AID_SYSTEM); 1629 CHECK_ARGUMENT_UUID(uuid); 1630 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1631 std::lock_guard<std::recursive_mutex> lock(mLock); 1632 1633 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1634 const char* pkgname = packageName.c_str(); 1635 const char* asecLibDir = nativeLibPath32.c_str(); 1636 struct stat s, libStat; 1637 binder::Status res = ok(); 1638 1639 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1640 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1641 1642 const char* pkgdir = _pkgdir.c_str(); 1643 const char* libsymlink = _libsymlink.c_str(); 1644 1645 if (stat(pkgdir, &s) < 0) { 1646 return error("Failed to stat " + _pkgdir); 1647 } 1648 1649 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1650 return error("Failed to chown " + _pkgdir); 1651 } 1652 1653 if (chmod(pkgdir, 0700) < 0) { 1654 res = error("Failed to chmod " + _pkgdir); 1655 goto out; 1656 } 1657 1658 if (lstat(libsymlink, &libStat) < 0) { 1659 if (errno != ENOENT) { 1660 res = error("Failed to stat " + _libsymlink); 1661 goto out; 1662 } 1663 } else { 1664 if (S_ISDIR(libStat.st_mode)) { 1665 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1666 res = error("Failed to delete " + _libsymlink); 1667 goto out; 1668 } 1669 } else if (S_ISLNK(libStat.st_mode)) { 1670 if (unlink(libsymlink) < 0) { 1671 res = error("Failed to unlink " + _libsymlink); 1672 goto out; 1673 } 1674 } 1675 } 1676 1677 if (symlink(asecLibDir, libsymlink) < 0) { 1678 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1679 goto out; 1680 } 1681 1682out: 1683 if (chmod(pkgdir, s.st_mode) < 0) { 1684 auto msg = "Failed to cleanup chmod " + _pkgdir; 1685 if (res.isOk()) { 1686 res = error(msg); 1687 } else { 1688 PLOG(ERROR) << msg; 1689 } 1690 } 1691 1692 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1693 auto msg = "Failed to cleanup chown " + _pkgdir; 1694 if (res.isOk()) { 1695 res = error(msg); 1696 } else { 1697 PLOG(ERROR) << msg; 1698 } 1699 } 1700 1701 return res; 1702} 1703 1704static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1705{ 1706 static const char *IDMAP_BIN = "/system/bin/idmap"; 1707 static const size_t MAX_INT_LEN = 32; 1708 char idmap_str[MAX_INT_LEN]; 1709 1710 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1711 1712 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1713 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1714} 1715 1716// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1717// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1718static int flatten_path(const char *prefix, const char *suffix, 1719 const char *overlay_path, char *idmap_path, size_t N) 1720{ 1721 if (overlay_path == NULL || idmap_path == NULL) { 1722 return -1; 1723 } 1724 const size_t len_overlay_path = strlen(overlay_path); 1725 // will access overlay_path + 1 further below; requires absolute path 1726 if (len_overlay_path < 2 || *overlay_path != '/') { 1727 return -1; 1728 } 1729 const size_t len_idmap_root = strlen(prefix); 1730 const size_t len_suffix = strlen(suffix); 1731 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1732 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1733 // additions below would cause overflow 1734 return -1; 1735 } 1736 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1737 return -1; 1738 } 1739 memset(idmap_path, 0, N); 1740 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1741 char *ch = idmap_path + len_idmap_root; 1742 while (*ch != '\0') { 1743 if (*ch == '/') { 1744 *ch = '@'; 1745 } 1746 ++ch; 1747 } 1748 return 0; 1749} 1750 1751binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1752 const std::string& overlayApkPath, int32_t uid) { 1753 ENFORCE_UID(AID_SYSTEM); 1754 std::lock_guard<std::recursive_mutex> lock(mLock); 1755 1756 const char* target_apk = targetApkPath.c_str(); 1757 const char* overlay_apk = overlayApkPath.c_str(); 1758 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1759 1760 int idmap_fd = -1; 1761 char idmap_path[PATH_MAX]; 1762 1763 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1764 idmap_path, sizeof(idmap_path)) == -1) { 1765 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1766 goto fail; 1767 } 1768 1769 unlink(idmap_path); 1770 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1771 if (idmap_fd < 0) { 1772 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1773 goto fail; 1774 } 1775 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1776 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1777 goto fail; 1778 } 1779 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1780 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1781 goto fail; 1782 } 1783 1784 pid_t pid; 1785 pid = fork(); 1786 if (pid == 0) { 1787 /* child -- drop privileges before continuing */ 1788 if (setgid(uid) != 0) { 1789 ALOGE("setgid(%d) failed during idmap\n", uid); 1790 exit(1); 1791 } 1792 if (setuid(uid) != 0) { 1793 ALOGE("setuid(%d) failed during idmap\n", uid); 1794 exit(1); 1795 } 1796 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1797 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1798 exit(1); 1799 } 1800 1801 run_idmap(target_apk, overlay_apk, idmap_fd); 1802 exit(1); /* only if exec call to idmap failed */ 1803 } else { 1804 int status = wait_child(pid); 1805 if (status != 0) { 1806 ALOGE("idmap failed, status=0x%04x\n", status); 1807 goto fail; 1808 } 1809 } 1810 1811 close(idmap_fd); 1812 return ok(); 1813fail: 1814 if (idmap_fd >= 0) { 1815 close(idmap_fd); 1816 unlink(idmap_path); 1817 } 1818 return error(); 1819} 1820 1821binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1822 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1823 const std::string& seInfo) { 1824 ENFORCE_UID(AID_SYSTEM); 1825 CHECK_ARGUMENT_UUID(uuid); 1826 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1827 std::lock_guard<std::recursive_mutex> lock(mLock); 1828 1829 binder::Status res = ok(); 1830 1831 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1832 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1833 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1834 const char* pkgName = packageName.c_str(); 1835 const char* seinfo = seInfo.c_str(); 1836 1837 uid_t uid = multiuser_get_uid(userId, appId); 1838 if (flags & FLAG_STORAGE_CE) { 1839 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1840 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1841 res = error("restorecon failed for " + path); 1842 } 1843 } 1844 if (flags & FLAG_STORAGE_DE) { 1845 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1846 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1847 res = error("restorecon failed for " + path); 1848 } 1849 } 1850 return res; 1851} 1852 1853binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1854 const std::string& instructionSet) { 1855 ENFORCE_UID(AID_SYSTEM); 1856 std::lock_guard<std::recursive_mutex> lock(mLock); 1857 1858 const char* oat_dir = oatDir.c_str(); 1859 const char* instruction_set = instructionSet.c_str(); 1860 char oat_instr_dir[PKG_PATH_MAX]; 1861 1862 if (validate_apk_path(oat_dir)) { 1863 return error("Invalid path " + oatDir); 1864 } 1865 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1866 return error("Failed to prepare " + oatDir); 1867 } 1868 if (selinux_android_restorecon(oat_dir, 0)) { 1869 return error("Failed to restorecon " + oatDir); 1870 } 1871 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1872 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1873 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1874 } 1875 return ok(); 1876} 1877 1878binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1879 ENFORCE_UID(AID_SYSTEM); 1880 std::lock_guard<std::recursive_mutex> lock(mLock); 1881 1882 if (validate_apk_path(packageDir.c_str())) { 1883 return error("Invalid path " + packageDir); 1884 } 1885 if (delete_dir_contents_and_dir(packageDir) != 0) { 1886 return error("Failed to delete " + packageDir); 1887 } 1888 return ok(); 1889} 1890 1891binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1892 const std::string& fromBase, const std::string& toBase) { 1893 ENFORCE_UID(AID_SYSTEM); 1894 std::lock_guard<std::recursive_mutex> lock(mLock); 1895 1896 const char* relative_path = relativePath.c_str(); 1897 const char* from_base = fromBase.c_str(); 1898 const char* to_base = toBase.c_str(); 1899 char from_path[PKG_PATH_MAX]; 1900 char to_path[PKG_PATH_MAX]; 1901 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1902 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1903 1904 if (validate_apk_path_subdirs(from_path)) { 1905 return error(StringPrintf("Invalid from path %s", from_path)); 1906 } 1907 1908 if (validate_apk_path_subdirs(to_path)) { 1909 return error(StringPrintf("Invalid to path %s", to_path)); 1910 } 1911 1912 if (link(from_path, to_path) < 0) { 1913 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1914 } 1915 1916 return ok(); 1917} 1918 1919binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1920 const std::string& instructionSet, const std::string& outputPath) { 1921 ENFORCE_UID(AID_SYSTEM); 1922 std::lock_guard<std::recursive_mutex> lock(mLock); 1923 1924 const char* apk_path = apkPath.c_str(); 1925 const char* instruction_set = instructionSet.c_str(); 1926 const char* oat_dir = outputPath.c_str(); 1927 1928 bool success = move_ab(apk_path, instruction_set, oat_dir); 1929 return success ? ok() : error(); 1930} 1931 1932binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1933 const std::string& instructionSet, const std::string& outputPath) { 1934 ENFORCE_UID(AID_SYSTEM); 1935 std::lock_guard<std::recursive_mutex> lock(mLock); 1936 1937 const char* apk_path = apkPath.c_str(); 1938 const char* instruction_set = instructionSet.c_str(); 1939 const char* oat_dir = outputPath.c_str(); 1940 1941 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1942 return res ? ok() : error(); 1943} 1944 1945binder::Status InstalldNativeService::invalidateMounts() { 1946 ENFORCE_UID(AID_SYSTEM); 1947 std::lock_guard<std::recursive_mutex> lock(mLock); 1948 1949 mQuotaDevices.clear(); 1950 1951 std::ifstream in("/proc/mounts"); 1952 if (!in.is_open()) { 1953 return error("Failed to read mounts"); 1954 } 1955 1956 std::string source; 1957 std::string target; 1958 std::string ignored; 1959 struct dqblk dq; 1960 while (!in.eof()) { 1961 std::getline(in, source, ' '); 1962 std::getline(in, target, ' '); 1963 std::getline(in, ignored); 1964 1965 if (source.compare(0, 11, "/dev/block/") == 0) { 1966 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 1967 reinterpret_cast<char*>(&dq)) == 0) { 1968 LOG(DEBUG) << "Found " << source << " with quota"; 1969 mQuotaDevices[target] = source; 1970 } 1971 } 1972 } 1973 return ok(); 1974} 1975 1976std::string InstalldNativeService::findQuotaDeviceForUuid( 1977 const std::unique_ptr<std::string>& uuid) { 1978 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 1979 return mQuotaDevices[path]; 1980} 1981 1982} // namespace installd 1983} // namespace android 1984