InstalldNativeService.cpp revision 5cb903e0a976a143cd70441dcbd0fcb5a9630daa
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 *kIdMapPath = "/system/bin/idmap"; 82static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 83static constexpr const char* IDMAP_SUFFIX = "@idmap"; 84 85// NOTE: keep in sync with Installer 86static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 87static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 88static constexpr int FLAG_USE_QUOTA = 1 << 12; 89static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13; 90static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14; 91static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15; 92static constexpr int FLAG_FORCE = 1 << 16; 93 94namespace { 95 96constexpr const char* kDump = "android.permission.DUMP"; 97 98static binder::Status ok() { 99 return binder::Status::ok(); 100} 101 102static binder::Status exception(uint32_t code, const std::string& msg) { 103 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 104} 105 106static binder::Status error() { 107 return binder::Status::fromServiceSpecificError(errno); 108} 109 110static binder::Status error(const std::string& msg) { 111 PLOG(ERROR) << msg; 112 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 113} 114 115static binder::Status error(uint32_t code, const std::string& msg) { 116 LOG(ERROR) << msg << " (" << code << ")"; 117 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 118} 119 120binder::Status checkPermission(const char* permission) { 121 pid_t pid; 122 uid_t uid; 123 124 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 125 reinterpret_cast<int32_t*>(&uid))) { 126 return ok(); 127 } else { 128 return exception(binder::Status::EX_SECURITY, 129 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 130 } 131} 132 133binder::Status checkUid(uid_t expectedUid) { 134 uid_t uid = IPCThreadState::self()->getCallingUid(); 135 if (uid == expectedUid || uid == AID_ROOT) { 136 return ok(); 137 } else { 138 return exception(binder::Status::EX_SECURITY, 139 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 140 } 141} 142 143binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 144 if (!uuid || is_valid_filename(*uuid)) { 145 return ok(); 146 } else { 147 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 148 StringPrintf("UUID %s is malformed", uuid->c_str())); 149 } 150} 151 152binder::Status checkArgumentPackageName(const std::string& packageName) { 153 if (is_valid_package_name(packageName.c_str())) { 154 return ok(); 155 } else { 156 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 157 StringPrintf("Package name %s is malformed", packageName.c_str())); 158 } 159} 160 161#define ENFORCE_UID(uid) { \ 162 binder::Status status = checkUid((uid)); \ 163 if (!status.isOk()) { \ 164 return status; \ 165 } \ 166} 167 168#define CHECK_ARGUMENT_UUID(uuid) { \ 169 binder::Status status = checkArgumentUuid((uuid)); \ 170 if (!status.isOk()) { \ 171 return status; \ 172 } \ 173} 174 175#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 176 binder::Status status = \ 177 checkArgumentPackageName((packageName)); \ 178 if (!status.isOk()) { \ 179 return status; \ 180 } \ 181} 182 183} // namespace 184 185status_t InstalldNativeService::start() { 186 IPCThreadState::self()->disableBackgroundScheduling(true); 187 status_t ret = BinderService<InstalldNativeService>::publish(); 188 if (ret != android::OK) { 189 return ret; 190 } 191 sp<ProcessState> ps(ProcessState::self()); 192 ps->startThreadPool(); 193 ps->giveThreadPoolName(); 194 return android::OK; 195} 196 197status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 198 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 199 const binder::Status dump_permission = checkPermission(kDump); 200 if (!dump_permission.isOk()) { 201 out << dump_permission.toString8() << endl; 202 return PERMISSION_DENIED; 203 } 204 std::lock_guard<std::recursive_mutex> lock(mLock); 205 206 out << "installd is happy!" << endl; 207 208 { 209 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 210 out << endl << "Storage mounts:" << endl; 211 for (const auto& n : mStorageMounts) { 212 out << " " << n.first << " = " << n.second << endl; 213 } 214 215 out << endl << "Quota reverse mounts:" << endl; 216 for (const auto& n : mQuotaReverseMounts) { 217 out << " " << n.first << " = " << n.second << endl; 218 } 219 } 220 221 { 222 std::lock_guard<std::recursive_mutex> lock(mQuotasLock); 223 out << endl << "Per-UID cache quotas:" << endl; 224 for (const auto& n : mCacheQuotas) { 225 out << " " << n.first << " = " << n.second << endl; 226 } 227 } 228 229 out << endl; 230 out.flush(); 231 232 return NO_ERROR; 233} 234 235/** 236 * Perform restorecon of the given path, but only perform recursive restorecon 237 * if the label of that top-level file actually changed. This can save us 238 * significant time by avoiding no-op traversals of large filesystem trees. 239 */ 240static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 241 bool existing) { 242 int res = 0; 243 char* before = nullptr; 244 char* after = nullptr; 245 246 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 247 // libselinux. Not needed here. 248 249 if (lgetfilecon(path.c_str(), &before) < 0) { 250 PLOG(ERROR) << "Failed before getfilecon for " << path; 251 goto fail; 252 } 253 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 254 PLOG(ERROR) << "Failed top-level restorecon for " << path; 255 goto fail; 256 } 257 if (lgetfilecon(path.c_str(), &after) < 0) { 258 PLOG(ERROR) << "Failed after getfilecon for " << path; 259 goto fail; 260 } 261 262 // If the initial top-level restorecon above changed the label, then go 263 // back and restorecon everything recursively 264 if (strcmp(before, after)) { 265 if (existing) { 266 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 267 << path << "; running recursive restorecon"; 268 } 269 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 270 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 271 PLOG(ERROR) << "Failed recursive restorecon for " << path; 272 goto fail; 273 } 274 } 275 276 goto done; 277fail: 278 res = -1; 279done: 280 free(before); 281 free(after); 282 return res; 283} 284 285static int restorecon_app_data_lazy(const std::string& parent, const char* name, 286 const std::string& seInfo, uid_t uid, bool existing) { 287 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 288 existing); 289} 290 291static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 292 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 293 PLOG(ERROR) << "Failed to prepare " << path; 294 return -1; 295 } 296 return 0; 297} 298 299/** 300 * Ensure that we have a hard-limit quota to protect against abusive apps; 301 * they should never use more than 90% of blocks or 50% of inodes. 302 */ 303static int prepare_app_quota(const std::unique_ptr<std::string>& uuid, const std::string& device, 304 uid_t uid) { 305 if (device.empty()) return 0; 306 307 struct dqblk dq; 308 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 309 reinterpret_cast<char*>(&dq)) != 0) { 310 PLOG(WARNING) << "Failed to find quota for " << uid; 311 return -1; 312 } 313 314 if ((dq.dqb_bhardlimit == 0) || (dq.dqb_ihardlimit == 0)) { 315 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 316 struct statvfs stat; 317 if (statvfs(path.c_str(), &stat) != 0) { 318 PLOG(WARNING) << "Failed to statvfs " << path; 319 return -1; 320 } 321 322 dq.dqb_valid = QIF_LIMITS; 323 dq.dqb_bhardlimit = (((stat.f_blocks * stat.f_frsize) / 10) * 9) / QIF_DQBLKSIZE; 324 dq.dqb_ihardlimit = (stat.f_files / 2); 325 if (quotactl(QCMD(Q_SETQUOTA, USRQUOTA), device.c_str(), uid, 326 reinterpret_cast<char*>(&dq)) != 0) { 327 PLOG(WARNING) << "Failed to set hard quota for " << uid; 328 return -1; 329 } else { 330 LOG(DEBUG) << "Applied hard quotas for " << uid; 331 return 0; 332 } 333 } else { 334 // Hard quota already set; assume it's reasonable 335 return 0; 336 } 337} 338 339binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 340 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 341 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 342 ENFORCE_UID(AID_SYSTEM); 343 CHECK_ARGUMENT_UUID(uuid); 344 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 345 std::lock_guard<std::recursive_mutex> lock(mLock); 346 347 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 348 const char* pkgname = packageName.c_str(); 349 350 // Assume invalid inode unless filled in below 351 if (_aidl_return != nullptr) *_aidl_return = -1; 352 353 int32_t uid = multiuser_get_uid(userId, appId); 354 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 355 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 356 357 // If UID doesn't have a specific cache GID, use UID value 358 if (cacheGid == -1) { 359 cacheGid = uid; 360 } 361 362 if (flags & FLAG_STORAGE_CE) { 363 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 364 bool existing = (access(path.c_str(), F_OK) == 0); 365 366 if (prepare_app_dir(path, targetMode, uid) || 367 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 368 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 369 return error("Failed to prepare " + path); 370 } 371 372 // Consider restorecon over contents if label changed 373 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 374 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 375 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 376 return error("Failed to restorecon " + path); 377 } 378 379 // Remember inode numbers of cache directories so that we can clear 380 // contents while CE storage is locked 381 if (write_path_inode(path, "cache", kXattrInodeCache) || 382 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 383 return error("Failed to write_path_inode for " + path); 384 } 385 386 // And return the CE inode of the top-level data directory so we can 387 // clear contents while CE storage is locked 388 if ((_aidl_return != nullptr) 389 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 390 return error("Failed to get_path_inode for " + path); 391 } 392 } 393 if (flags & FLAG_STORAGE_DE) { 394 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 395 bool existing = (access(path.c_str(), F_OK) == 0); 396 397 if (prepare_app_dir(path, targetMode, uid) || 398 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 399 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 400 return error("Failed to prepare " + path); 401 } 402 403 // Consider restorecon over contents if label changed 404 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 405 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 406 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 407 return error("Failed to restorecon " + path); 408 } 409 410 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), uid)) { 411 return error("Failed to set hard quota " + path); 412 } 413 414 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 415 const std::string profile_dir = 416 create_primary_current_profile_package_dir_path(userId, pkgname); 417 // read-write-execute only for the app user. 418 if (fs_prepare_dir_strict(profile_dir.c_str(), 0700, uid, uid) != 0) { 419 return error("Failed to prepare " + profile_dir); 420 } 421 const std::string profile_file = create_current_profile_path(userId, pkgname, 422 /*is_secondary_dex*/false); 423 // read-write only for the app user. 424 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 425 return error("Failed to prepare " + profile_file); 426 } 427 const std::string ref_profile_path = 428 create_primary_reference_profile_package_dir_path(pkgname); 429 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 430 // profiles. 431 int shared_app_gid = multiuser_get_shared_gid(0, appId); 432 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 433 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 434 return error("Failed to prepare " + ref_profile_path); 435 } 436 } 437 } 438 return ok(); 439} 440 441binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 442 const std::string& packageName, int32_t userId, int32_t flags) { 443 ENFORCE_UID(AID_SYSTEM); 444 CHECK_ARGUMENT_UUID(uuid); 445 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 446 std::lock_guard<std::recursive_mutex> lock(mLock); 447 448 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 449 const char* pkgname = packageName.c_str(); 450 451 // This method only exists to upgrade system apps that have requested 452 // forceDeviceEncrypted, so their default storage always lives in a 453 // consistent location. This only works on non-FBE devices, since we 454 // never want to risk exposing data on a device with real CE/DE storage. 455 456 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 457 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 458 459 // If neither directory is marked as default, assume CE is default 460 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 461 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 462 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 463 return error("Failed to mark default storage " + ce_path); 464 } 465 } 466 467 // Migrate default data location if needed 468 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 469 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 470 471 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 472 LOG(WARNING) << "Requested default storage " << target 473 << " is not active; migrating from " << source; 474 if (delete_dir_contents_and_dir(target) != 0) { 475 return error("Failed to delete " + target); 476 } 477 if (rename(source.c_str(), target.c_str()) != 0) { 478 return error("Failed to rename " + source + " to " + target); 479 } 480 } 481 482 return ok(); 483} 484 485 486binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 487 ENFORCE_UID(AID_SYSTEM); 488 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 489 std::lock_guard<std::recursive_mutex> lock(mLock); 490 491 binder::Status res = ok(); 492 if (!clear_primary_reference_profile(packageName)) { 493 res = error("Failed to clear reference profile for " + packageName); 494 } 495 if (!clear_primary_current_profiles(packageName)) { 496 res = error("Failed to clear current profiles for " + packageName); 497 } 498 return res; 499} 500 501binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 502 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 503 ENFORCE_UID(AID_SYSTEM); 504 CHECK_ARGUMENT_UUID(uuid); 505 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 506 std::lock_guard<std::recursive_mutex> lock(mLock); 507 508 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 509 const char* pkgname = packageName.c_str(); 510 511 binder::Status res = ok(); 512 if (flags & FLAG_STORAGE_CE) { 513 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 514 if (flags & FLAG_CLEAR_CACHE_ONLY) { 515 path = read_path_inode(path, "cache", kXattrInodeCache); 516 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 517 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 518 } 519 if (access(path.c_str(), F_OK) == 0) { 520 if (delete_dir_contents(path) != 0) { 521 res = error("Failed to delete contents of " + path); 522 } 523 } 524 } 525 if (flags & FLAG_STORAGE_DE) { 526 std::string suffix = ""; 527 bool only_cache = false; 528 if (flags & FLAG_CLEAR_CACHE_ONLY) { 529 suffix = CACHE_DIR_POSTFIX; 530 only_cache = true; 531 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 532 suffix = CODE_CACHE_DIR_POSTFIX; 533 only_cache = true; 534 } 535 536 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 537 if (access(path.c_str(), F_OK) == 0) { 538 if (delete_dir_contents(path) != 0) { 539 res = error("Failed to delete contents of " + path); 540 } 541 } 542 if (!only_cache) { 543 if (!clear_primary_current_profile(packageName, userId)) { 544 res = error("Failed to clear current profile for " + packageName); 545 } 546 } 547 } 548 return res; 549} 550 551static int destroy_app_reference_profile(const std::string& pkgname) { 552 return delete_dir_contents_and_dir( 553 create_primary_reference_profile_package_dir_path(pkgname), 554 /*ignore_if_missing*/ true); 555} 556 557static int destroy_app_current_profiles(const std::string& pkgname, userid_t userid) { 558 return delete_dir_contents_and_dir( 559 create_primary_current_profile_package_dir_path(userid, pkgname), 560 /*ignore_if_missing*/ true); 561} 562 563binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 564 ENFORCE_UID(AID_SYSTEM); 565 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 566 std::lock_guard<std::recursive_mutex> lock(mLock); 567 568 binder::Status res = ok(); 569 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 570 for (auto user : users) { 571 if (destroy_app_current_profiles(packageName, user) != 0) { 572 res = error("Failed to destroy current profiles for " + packageName); 573 } 574 } 575 if (destroy_app_reference_profile(packageName) != 0) { 576 res = error("Failed to destroy reference profile for " + packageName); 577 } 578 return res; 579} 580 581binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 582 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 583 ENFORCE_UID(AID_SYSTEM); 584 CHECK_ARGUMENT_UUID(uuid); 585 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 586 std::lock_guard<std::recursive_mutex> lock(mLock); 587 588 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 589 const char* pkgname = packageName.c_str(); 590 591 binder::Status res = ok(); 592 if (flags & FLAG_STORAGE_CE) { 593 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 594 if (delete_dir_contents_and_dir(path) != 0) { 595 res = error("Failed to delete " + path); 596 } 597 } 598 if (flags & FLAG_STORAGE_DE) { 599 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 600 if (delete_dir_contents_and_dir(path) != 0) { 601 res = error("Failed to delete " + path); 602 } 603 destroy_app_current_profiles(packageName, userId); 604 // TODO(calin): If the package is still installed by other users it's probably 605 // beneficial to keep the reference profile around. 606 // Verify if it's ok to do that. 607 destroy_app_reference_profile(packageName); 608 } 609 return res; 610} 611 612static gid_t get_cache_gid(uid_t uid) { 613 int32_t gid = multiuser_get_cache_gid(multiuser_get_user_id(uid), multiuser_get_app_id(uid)); 614 return (gid != -1) ? gid : uid; 615} 616 617binder::Status InstalldNativeService::fixupAppData(const std::unique_ptr<std::string>& uuid, 618 int32_t flags) { 619 ENFORCE_UID(AID_SYSTEM); 620 CHECK_ARGUMENT_UUID(uuid); 621 std::lock_guard<std::recursive_mutex> lock(mLock); 622 623 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 624 for (auto user : get_known_users(uuid_)) { 625 ATRACE_BEGIN("fixup user"); 626 FTS* fts; 627 FTSENT* p; 628 auto ce_path = create_data_user_ce_path(uuid_, user); 629 auto de_path = create_data_user_de_path(uuid_, user); 630 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), nullptr }; 631 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 632 return error("Failed to fts_open"); 633 } 634 while ((p = fts_read(fts)) != nullptr) { 635 if (p->fts_info == FTS_D && p->fts_level == 1) { 636 // Track down inodes of cache directories 637 uint64_t raw = 0; 638 ino_t inode_cache = 0; 639 ino_t inode_code_cache = 0; 640 if (getxattr(p->fts_path, kXattrInodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 641 inode_cache = raw; 642 } 643 if (getxattr(p->fts_path, kXattrInodeCodeCache, &raw, sizeof(raw)) == sizeof(raw)) { 644 inode_code_cache = raw; 645 } 646 647 // Figure out expected GID of each child 648 FTSENT* child = fts_children(fts, 0); 649 while (child != nullptr) { 650 if ((child->fts_statp->st_ino == inode_cache) 651 || (child->fts_statp->st_ino == inode_code_cache) 652 || !strcmp(child->fts_name, "cache") 653 || !strcmp(child->fts_name, "code_cache")) { 654 child->fts_number = get_cache_gid(p->fts_statp->st_uid); 655 } else { 656 child->fts_number = p->fts_statp->st_uid; 657 } 658 child = child->fts_link; 659 } 660 } else if (p->fts_level >= 2) { 661 if (p->fts_level > 2) { 662 // Inherit GID from parent once we're deeper into tree 663 p->fts_number = p->fts_parent->fts_number; 664 } 665 666 uid_t uid = p->fts_parent->fts_statp->st_uid; 667 gid_t cache_gid = get_cache_gid(uid); 668 gid_t expected = p->fts_number; 669 gid_t actual = p->fts_statp->st_gid; 670 if (actual == expected) { 671#if FIXUP_DEBUG 672 LOG(DEBUG) << "Ignoring " << p->fts_path << " with expected GID " << expected; 673#endif 674 if (!(flags & FLAG_FORCE)) { 675 fts_set(fts, p, FTS_SKIP); 676 } 677 } else if ((actual == uid) || (actual == cache_gid)) { 678 // Only consider fixing up when current GID belongs to app 679 if (p->fts_info != FTS_D) { 680 LOG(INFO) << "Fixing " << p->fts_path << " with unexpected GID " << actual 681 << " instead of " << expected; 682 } 683 switch (p->fts_info) { 684 case FTS_DP: 685 // If we're moving towards cache GID, we need to set S_ISGID 686 if (expected == cache_gid) { 687 if (chmod(p->fts_path, 02771) != 0) { 688 PLOG(WARNING) << "Failed to chmod " << p->fts_path; 689 } 690 } 691 // Intentional fall through to also set GID 692 case FTS_F: 693 if (chown(p->fts_path, -1, expected) != 0) { 694 PLOG(WARNING) << "Failed to chown " << p->fts_path; 695 } 696 break; 697 case FTS_SL: 698 case FTS_SLNONE: 699 if (lchown(p->fts_path, -1, expected) != 0) { 700 PLOG(WARNING) << "Failed to chown " << p->fts_path; 701 } 702 break; 703 } 704 } else { 705 // Ignore all other GID transitions, since they're kinda shady 706 LOG(WARNING) << "Ignoring " << p->fts_path << " with unexpected GID " << actual 707 << " instead of " << expected; 708 } 709 } 710 } 711 fts_close(fts); 712 ATRACE_END(); 713 } 714 return ok(); 715} 716 717binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 718 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 719 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 720 int32_t targetSdkVersion) { 721 ENFORCE_UID(AID_SYSTEM); 722 CHECK_ARGUMENT_UUID(fromUuid); 723 CHECK_ARGUMENT_UUID(toUuid); 724 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 725 std::lock_guard<std::recursive_mutex> lock(mLock); 726 727 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 728 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 729 const char* package_name = packageName.c_str(); 730 const char* data_app_name = dataAppName.c_str(); 731 732 binder::Status res = ok(); 733 std::vector<userid_t> users = get_known_users(from_uuid); 734 735 // Copy app 736 { 737 auto from = create_data_app_package_path(from_uuid, data_app_name); 738 auto to = create_data_app_package_path(to_uuid, data_app_name); 739 auto to_parent = create_data_app_path(to_uuid); 740 741 char *argv[] = { 742 (char*) kCpPath, 743 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 744 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 745 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 746 (char*) "-P", /* Do not follow symlinks [default] */ 747 (char*) "-d", /* don't dereference symlinks */ 748 (char*) from.c_str(), 749 (char*) to_parent.c_str() 750 }; 751 752 LOG(DEBUG) << "Copying " << from << " to " << to; 753 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 754 if (rc != 0) { 755 res = error(rc, "Failed copying " + from + " to " + to); 756 goto fail; 757 } 758 759 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 760 res = error("Failed to restorecon " + to); 761 goto fail; 762 } 763 } 764 765 // Copy private data for all known users 766 for (auto user : users) { 767 768 // Data source may not exist for all users; that's okay 769 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 770 if (access(from_ce.c_str(), F_OK) != 0) { 771 LOG(INFO) << "Missing source " << from_ce; 772 continue; 773 } 774 775 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 776 seInfo, targetSdkVersion, nullptr).isOk()) { 777 res = error("Failed to create package target"); 778 goto fail; 779 } 780 781 char *argv[] = { 782 (char*) kCpPath, 783 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 784 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 785 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 786 (char*) "-P", /* Do not follow symlinks [default] */ 787 (char*) "-d", /* don't dereference symlinks */ 788 nullptr, 789 nullptr 790 }; 791 792 { 793 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 794 auto to = create_data_user_de_path(to_uuid, user); 795 argv[6] = (char*) from.c_str(); 796 argv[7] = (char*) to.c_str(); 797 798 LOG(DEBUG) << "Copying " << from << " to " << to; 799 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 800 if (rc != 0) { 801 res = error(rc, "Failed copying " + from + " to " + to); 802 goto fail; 803 } 804 } 805 { 806 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 807 auto to = create_data_user_ce_path(to_uuid, user); 808 argv[6] = (char*) from.c_str(); 809 argv[7] = (char*) to.c_str(); 810 811 LOG(DEBUG) << "Copying " << from << " to " << to; 812 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 813 if (rc != 0) { 814 res = error(rc, "Failed copying " + from + " to " + to); 815 goto fail; 816 } 817 } 818 819 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 820 appId, seInfo).isOk()) { 821 res = error("Failed to restorecon"); 822 goto fail; 823 } 824 } 825 826 // We let the framework scan the new location and persist that before 827 // deleting the data in the old location; this ordering ensures that 828 // we can recover from things like battery pulls. 829 return ok(); 830 831fail: 832 // Nuke everything we might have already copied 833 { 834 auto to = create_data_app_package_path(to_uuid, data_app_name); 835 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 836 LOG(WARNING) << "Failed to rollback " << to; 837 } 838 } 839 for (auto user : users) { 840 { 841 auto to = create_data_user_de_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 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 848 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 849 LOG(WARNING) << "Failed to rollback " << to; 850 } 851 } 852 } 853 return res; 854} 855 856binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 857 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 858 ENFORCE_UID(AID_SYSTEM); 859 CHECK_ARGUMENT_UUID(uuid); 860 std::lock_guard<std::recursive_mutex> lock(mLock); 861 862 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 863 if (flags & FLAG_STORAGE_DE) { 864 if (uuid_ == nullptr) { 865 if (ensure_config_user_dirs(userId) != 0) { 866 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 867 } 868 } 869 } 870 871 // Data under /data/media doesn't have an app, but we still want 872 // to limit it to prevent abuse. 873 if (prepare_app_quota(uuid, findQuotaDeviceForUuid(uuid), 874 multiuser_get_uid(userId, AID_MEDIA_RW))) { 875 return error("Failed to set hard quota for media_rw"); 876 } 877 878 return ok(); 879} 880 881binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 882 int32_t userId, int32_t flags) { 883 ENFORCE_UID(AID_SYSTEM); 884 CHECK_ARGUMENT_UUID(uuid); 885 std::lock_guard<std::recursive_mutex> lock(mLock); 886 887 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 888 binder::Status res = ok(); 889 if (flags & FLAG_STORAGE_DE) { 890 auto path = create_data_user_de_path(uuid_, userId); 891 if (delete_dir_contents_and_dir(path, true) != 0) { 892 res = error("Failed to delete " + path); 893 } 894 if (uuid_ == nullptr) { 895 path = create_data_misc_legacy_path(userId); 896 if (delete_dir_contents_and_dir(path, true) != 0) { 897 res = error("Failed to delete " + path); 898 } 899 path = create_primary_cur_profile_dir_path(userId); 900 if (delete_dir_contents_and_dir(path, true) != 0) { 901 res = error("Failed to delete " + path); 902 } 903 } 904 } 905 if (flags & FLAG_STORAGE_CE) { 906 auto path = create_data_user_ce_path(uuid_, userId); 907 if (delete_dir_contents_and_dir(path, true) != 0) { 908 res = error("Failed to delete " + path); 909 } 910 path = findDataMediaPath(uuid, userId); 911 if (delete_dir_contents_and_dir(path, true) != 0) { 912 res = error("Failed to delete " + path); 913 } 914 } 915 return res; 916} 917 918/* Try to ensure free_size bytes of storage are available. 919 * Returns 0 on success. 920 * This is rather simple-minded because doing a full LRU would 921 * be potentially memory-intensive, and without atime it would 922 * also require that apps constantly modify file metadata even 923 * when just reading from the cache, which is pretty awful. 924 */ 925binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 926 int64_t freeStorageSize, int32_t flags) { 927 ENFORCE_UID(AID_SYSTEM); 928 CHECK_ARGUMENT_UUID(uuid); 929 std::lock_guard<std::recursive_mutex> lock(mLock); 930 931 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 932 auto data_path = create_data_path(uuid_); 933 auto device = findQuotaDeviceForUuid(uuid); 934 auto noop = (flags & FLAG_FREE_CACHE_NOOP); 935 936 int64_t free = data_disk_free(data_path); 937 if (free < 0) { 938 return error("Failed to determine free space for " + data_path); 939 } 940 941 int64_t needed = freeStorageSize - free; 942 LOG(DEBUG) << "Device " << data_path << " has " << free << " free; requested " 943 << freeStorageSize << "; needed " << needed; 944 945 if (free >= freeStorageSize) { 946 return ok(); 947 } 948 949 if (flags & FLAG_FREE_CACHE_V2) { 950 // This new cache strategy fairly removes files from UIDs by deleting 951 // files from the UIDs which are most over their allocated quota 952 953 // 1. Create trackers for every known UID 954 ATRACE_BEGIN("create"); 955 std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; 956 for (auto user : get_known_users(uuid_)) { 957 FTS *fts; 958 FTSENT *p; 959 auto ce_path = create_data_user_ce_path(uuid_, user); 960 auto de_path = create_data_user_de_path(uuid_, user); 961 auto media_path = findDataMediaPath(uuid, user) + "/Android/data/"; 962 char *argv[] = { (char*) ce_path.c_str(), (char*) de_path.c_str(), 963 (char*) media_path.c_str(), nullptr }; 964 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 965 return error("Failed to fts_open"); 966 } 967 while ((p = fts_read(fts)) != NULL) { 968 if (p->fts_info == FTS_D && p->fts_level == 1) { 969 uid_t uid = p->fts_statp->st_uid; 970 if (multiuser_get_app_id(uid) == AID_MEDIA_RW) { 971 uid = (multiuser_get_app_id(p->fts_statp->st_gid) - AID_EXT_GID_START) 972 + AID_APP_START; 973 } 974 auto search = trackers.find(uid); 975 if (search != trackers.end()) { 976 search->second->addDataPath(p->fts_path); 977 } else { 978 auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( 979 multiuser_get_user_id(uid), multiuser_get_app_id(uid), device)); 980 tracker->addDataPath(p->fts_path); 981 { 982 std::lock_guard<std::recursive_mutex> lock(mQuotasLock); 983 tracker->cacheQuota = mCacheQuotas[uid]; 984 } 985 if (tracker->cacheQuota == 0) { 986#if MEASURE_DEBUG 987 LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; 988#endif 989 tracker->cacheQuota = 67108864; 990 } 991 trackers[uid] = tracker; 992 } 993 fts_set(fts, p, FTS_SKIP); 994 } 995 } 996 fts_close(fts); 997 } 998 ATRACE_END(); 999 1000 // 2. Populate tracker stats and insert into priority queue 1001 ATRACE_BEGIN("populate"); 1002 auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { 1003 return (left->getCacheRatio() < right->getCacheRatio()); 1004 }; 1005 std::priority_queue<std::shared_ptr<CacheTracker>, 1006 std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); 1007 for (const auto& it : trackers) { 1008 it.second->loadStats(); 1009 queue.push(it.second); 1010 } 1011 ATRACE_END(); 1012 1013 // 3. Bounce across the queue, freeing items from whichever tracker is 1014 // the most over their assigned quota 1015 ATRACE_BEGIN("bounce"); 1016 std::shared_ptr<CacheTracker> active; 1017 while (active || !queue.empty()) { 1018 // Only look at apps under quota when explicitly requested 1019 if (active && (active->getCacheRatio() < 10000) 1020 && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) { 1021 LOG(DEBUG) << "Active ratio " << active->getCacheRatio() 1022 << " isn't over quota, and defy not requested"; 1023 break; 1024 } 1025 1026 // Find the best tracker to work with; this might involve swapping 1027 // if the active tracker is no longer the most over quota 1028 bool nextBetter = active && !queue.empty() 1029 && active->getCacheRatio() < queue.top()->getCacheRatio(); 1030 if (!active || nextBetter) { 1031 if (active) { 1032 // Current tracker still has items, so we'll consider it 1033 // again later once it bubbles up to surface 1034 queue.push(active); 1035 } 1036 active = queue.top(); queue.pop(); 1037 active->ensureItems(); 1038 continue; 1039 } 1040 1041 // If no items remain, go find another tracker 1042 if (active->items.empty()) { 1043 active = nullptr; 1044 continue; 1045 } else { 1046 auto item = active->items.back(); 1047 active->items.pop_back(); 1048 1049 LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); 1050 if (!noop) { 1051 item->purge(); 1052 } 1053 active->cacheUsed -= item->size; 1054 needed -= item->size; 1055 } 1056 1057 // Verify that we're actually done before bailing, since sneaky 1058 // apps might be using hardlinks 1059 if (needed <= 0) { 1060 free = data_disk_free(data_path); 1061 needed = freeStorageSize - free; 1062 if (needed <= 0) { 1063 break; 1064 } else { 1065 LOG(WARNING) << "Expected to be done but still need " << needed; 1066 } 1067 } 1068 } 1069 ATRACE_END(); 1070 1071 } else { 1072 return error("Legacy cache logic no longer supported"); 1073 } 1074 1075 free = data_disk_free(data_path); 1076 if (free >= freeStorageSize) { 1077 return ok(); 1078 } else { 1079 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 1080 freeStorageSize, data_path.c_str(), free)); 1081 } 1082} 1083 1084binder::Status InstalldNativeService::rmdex(const std::string& codePath, 1085 const std::string& instructionSet) { 1086 ENFORCE_UID(AID_SYSTEM); 1087 std::lock_guard<std::recursive_mutex> lock(mLock); 1088 1089 char dex_path[PKG_PATH_MAX]; 1090 1091 const char* path = codePath.c_str(); 1092 const char* instruction_set = instructionSet.c_str(); 1093 1094 if (validate_apk_path(path) && validate_system_app_path(path)) { 1095 return error("Invalid path " + codePath); 1096 } 1097 1098 if (!create_cache_path(dex_path, path, instruction_set)) { 1099 return error("Failed to create cache path for " + codePath); 1100 } 1101 1102 ALOGV("unlink %s\n", dex_path); 1103 if (unlink(dex_path) < 0) { 1104 // It's ok if we don't have a dalvik cache path. Report error only when the path exists 1105 // but could not be unlinked. 1106 if (errno != ENOENT) { 1107 return error(StringPrintf("Failed to unlink %s", dex_path)); 1108 } 1109 } 1110 return ok(); 1111} 1112 1113struct stats { 1114 int64_t codeSize; 1115 int64_t dataSize; 1116 int64_t cacheSize; 1117}; 1118 1119#if MEASURE_DEBUG 1120static std::string toString(std::vector<int64_t> values) { 1121 std::stringstream res; 1122 res << "["; 1123 for (size_t i = 0; i < values.size(); i++) { 1124 res << values[i]; 1125 if (i < values.size() - 1) { 1126 res << ","; 1127 } 1128 } 1129 res << "]"; 1130 return res.str(); 1131} 1132#endif 1133 1134static void collectQuotaStats(const std::string& device, int32_t userId, 1135 int32_t appId, struct stats* stats, struct stats* extStats) { 1136 if (device.empty()) return; 1137 1138 struct dqblk dq; 1139 1140 if (stats != nullptr) { 1141 uid_t uid = multiuser_get_uid(userId, appId); 1142 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1143 reinterpret_cast<char*>(&dq)) != 0) { 1144 if (errno != ESRCH) { 1145 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1146 } 1147 } else { 1148#if MEASURE_DEBUG 1149 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1150#endif 1151 stats->dataSize += dq.dqb_curspace; 1152 } 1153 1154 int cacheGid = multiuser_get_cache_gid(userId, appId); 1155 if (cacheGid != -1) { 1156 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 1157 reinterpret_cast<char*>(&dq)) != 0) { 1158 if (errno != ESRCH) { 1159 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 1160 } 1161 } else { 1162#if MEASURE_DEBUG 1163 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 1164#endif 1165 stats->cacheSize += dq.dqb_curspace; 1166 } 1167 } 1168 1169 int sharedGid = multiuser_get_shared_gid(0, appId); 1170 if (sharedGid != -1) { 1171 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 1172 reinterpret_cast<char*>(&dq)) != 0) { 1173 if (errno != ESRCH) { 1174 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 1175 } 1176 } else { 1177#if MEASURE_DEBUG 1178 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 1179#endif 1180 stats->codeSize += dq.dqb_curspace; 1181 } 1182 } 1183 } 1184 1185 if (extStats != nullptr) { 1186 int extGid = multiuser_get_ext_gid(userId, appId); 1187 if (extGid != -1) { 1188 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extGid, 1189 reinterpret_cast<char*>(&dq)) != 0) { 1190 if (errno != ESRCH) { 1191 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extGid; 1192 } 1193 } else { 1194#if MEASURE_DEBUG 1195 LOG(DEBUG) << "quotactl() for GID " << extGid << " " << dq.dqb_curspace; 1196#endif 1197 extStats->dataSize += dq.dqb_curspace; 1198 } 1199 } 1200 1201 int extCacheGid = multiuser_get_ext_cache_gid(userId, appId); 1202 if (extCacheGid != -1) { 1203 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extCacheGid, 1204 reinterpret_cast<char*>(&dq)) != 0) { 1205 if (errno != ESRCH) { 1206 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extCacheGid; 1207 } 1208 } else { 1209#if MEASURE_DEBUG 1210 LOG(DEBUG) << "quotactl() for GID " << extCacheGid << " " << dq.dqb_curspace; 1211#endif 1212 extStats->dataSize += dq.dqb_curspace; 1213 extStats->cacheSize += dq.dqb_curspace; 1214 } 1215 } 1216 } 1217} 1218 1219static void collectManualStats(const std::string& path, struct stats* stats) { 1220 DIR *d; 1221 int dfd; 1222 struct dirent *de; 1223 struct stat s; 1224 1225 d = opendir(path.c_str()); 1226 if (d == nullptr) { 1227 if (errno != ENOENT) { 1228 PLOG(WARNING) << "Failed to open " << path; 1229 } 1230 return; 1231 } 1232 dfd = dirfd(d); 1233 while ((de = readdir(d))) { 1234 const char *name = de->d_name; 1235 1236 int64_t size = 0; 1237 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 1238 size = s.st_blocks * 512; 1239 } 1240 1241 if (de->d_type == DT_DIR) { 1242 if (!strcmp(name, ".")) { 1243 // Don't recurse, but still count node size 1244 } else if (!strcmp(name, "..")) { 1245 // Don't recurse or count node size 1246 continue; 1247 } else { 1248 // Measure all children nodes 1249 size = 0; 1250 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1251 } 1252 1253 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1254 stats->cacheSize += size; 1255 } 1256 } 1257 1258 // Legacy symlink isn't owned by app 1259 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1260 continue; 1261 } 1262 1263 // Everything found inside is considered data 1264 stats->dataSize += size; 1265 } 1266 closedir(d); 1267} 1268 1269static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1270 bool exclude_apps = false) { 1271 DIR *d; 1272 int dfd; 1273 struct dirent *de; 1274 struct stat s; 1275 1276 d = opendir(path.c_str()); 1277 if (d == nullptr) { 1278 if (errno != ENOENT) { 1279 PLOG(WARNING) << "Failed to open " << path; 1280 } 1281 return; 1282 } 1283 dfd = dirfd(d); 1284 while ((de = readdir(d))) { 1285 if (de->d_type == DT_DIR) { 1286 const char *name = de->d_name; 1287 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1288 continue; 1289 } 1290 int32_t user_uid = multiuser_get_app_id(s.st_uid); 1291 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1292 continue; 1293 } else if (exclude_apps && (user_uid >= AID_APP_START && user_uid <= AID_APP_END)) { 1294 continue; 1295 } else { 1296 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1297 } 1298 } 1299 } 1300 closedir(d); 1301} 1302 1303static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { 1304 FTS *fts; 1305 FTSENT *p; 1306 char *argv[] = { (char*) path.c_str(), nullptr }; 1307 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1308 PLOG(ERROR) << "Failed to fts_open " << path; 1309 return; 1310 } 1311 while ((p = fts_read(fts)) != NULL) { 1312 p->fts_number = p->fts_parent->fts_number; 1313 switch (p->fts_info) { 1314 case FTS_D: 1315 if (p->fts_level == 4 1316 && !strcmp(p->fts_name, "cache") 1317 && !strcmp(p->fts_parent->fts_parent->fts_name, "data") 1318 && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { 1319 p->fts_number = 1; 1320 } 1321 // Fall through to count the directory 1322 case FTS_DEFAULT: 1323 case FTS_F: 1324 case FTS_SL: 1325 case FTS_SLNONE: 1326 int64_t size = (p->fts_statp->st_blocks * 512); 1327 if (p->fts_number == 1) { 1328 stats->cacheSize += size; 1329 } 1330 stats->dataSize += size; 1331 break; 1332 } 1333 } 1334 fts_close(fts); 1335} 1336 1337binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1338 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1339 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1340 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1341 ENFORCE_UID(AID_SYSTEM); 1342 CHECK_ARGUMENT_UUID(uuid); 1343 for (auto packageName : packageNames) { 1344 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1345 } 1346 // NOTE: Locking is relaxed on this method, since it's limited to 1347 // read-only measurements without mutation. 1348 1349 // When modifying this logic, always verify using tests: 1350 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1351 1352#if MEASURE_DEBUG 1353 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1354#endif 1355 1356 // Here's a summary of the common storage locations across the platform, 1357 // and how they're each tagged: 1358 // 1359 // /data/app/com.example UID system 1360 // /data/app/com.example/oat UID system 1361 // /data/user/0/com.example UID u0_a10 GID u0_a10 1362 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1363 // /data/media/0/foo.txt UID u0_media_rw 1364 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1365 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1366 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1367 // /data/media/obb/com.example UID system 1368 1369 struct stats stats; 1370 struct stats extStats; 1371 memset(&stats, 0, sizeof(stats)); 1372 memset(&extStats, 0, sizeof(extStats)); 1373 1374 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1375 1376 auto device = findQuotaDeviceForUuid(uuid); 1377 if (device.empty()) { 1378 flags &= ~FLAG_USE_QUOTA; 1379 } 1380 1381 ATRACE_BEGIN("obb"); 1382 for (auto packageName : packageNames) { 1383 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1384 calculate_tree_size(obbCodePath, &extStats.codeSize); 1385 } 1386 ATRACE_END(); 1387 1388 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1389 ATRACE_BEGIN("code"); 1390 for (auto codePath : codePaths) { 1391 calculate_tree_size(codePath, &stats.codeSize, -1, 1392 multiuser_get_shared_gid(0, appId)); 1393 } 1394 ATRACE_END(); 1395 1396 ATRACE_BEGIN("quota"); 1397 collectQuotaStats(device, userId, appId, &stats, &extStats); 1398 ATRACE_END(); 1399 } else { 1400 ATRACE_BEGIN("code"); 1401 for (auto codePath : codePaths) { 1402 calculate_tree_size(codePath, &stats.codeSize); 1403 } 1404 ATRACE_END(); 1405 1406 for (size_t i = 0; i < packageNames.size(); i++) { 1407 const char* pkgname = packageNames[i].c_str(); 1408 1409 ATRACE_BEGIN("data"); 1410 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1411 collectManualStats(cePath, &stats); 1412 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1413 collectManualStats(dePath, &stats); 1414 ATRACE_END(); 1415 1416 if (!uuid) { 1417 ATRACE_BEGIN("profiles"); 1418 calculate_tree_size( 1419 create_primary_current_profile_package_dir_path(userId, pkgname), 1420 &stats.dataSize); 1421 calculate_tree_size( 1422 create_primary_reference_profile_package_dir_path(pkgname), 1423 &stats.codeSize); 1424 ATRACE_END(); 1425 } 1426 1427 ATRACE_BEGIN("external"); 1428 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1429 collectManualStats(extPath, &extStats); 1430 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1431 calculate_tree_size(mediaPath, &extStats.dataSize); 1432 ATRACE_END(); 1433 } 1434 1435 if (!uuid) { 1436 ATRACE_BEGIN("dalvik"); 1437 int32_t sharedGid = multiuser_get_shared_gid(0, appId); 1438 if (sharedGid != -1) { 1439 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1440 sharedGid, -1); 1441 } 1442 ATRACE_END(); 1443 } 1444 } 1445 1446 std::vector<int64_t> ret; 1447 ret.push_back(stats.codeSize); 1448 ret.push_back(stats.dataSize); 1449 ret.push_back(stats.cacheSize); 1450 ret.push_back(extStats.codeSize); 1451 ret.push_back(extStats.dataSize); 1452 ret.push_back(extStats.cacheSize); 1453#if MEASURE_DEBUG 1454 LOG(DEBUG) << "Final result " << toString(ret); 1455#endif 1456 *_aidl_return = ret; 1457 return ok(); 1458} 1459 1460binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1461 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1462 std::vector<int64_t>* _aidl_return) { 1463 ENFORCE_UID(AID_SYSTEM); 1464 CHECK_ARGUMENT_UUID(uuid); 1465 // NOTE: Locking is relaxed on this method, since it's limited to 1466 // read-only measurements without mutation. 1467 1468 // When modifying this logic, always verify using tests: 1469 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1470 1471#if MEASURE_DEBUG 1472 LOG(INFO) << "Measuring user " << userId; 1473#endif 1474 1475 struct stats stats; 1476 struct stats extStats; 1477 memset(&stats, 0, sizeof(stats)); 1478 memset(&extStats, 0, sizeof(extStats)); 1479 1480 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1481 1482 auto device = findQuotaDeviceForUuid(uuid); 1483 if (device.empty()) { 1484 flags &= ~FLAG_USE_QUOTA; 1485 } 1486 1487 if (flags & FLAG_USE_QUOTA) { 1488 struct dqblk dq; 1489 1490 ATRACE_BEGIN("obb"); 1491 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), AID_MEDIA_OBB, 1492 reinterpret_cast<char*>(&dq)) != 0) { 1493 if (errno != ESRCH) { 1494 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << AID_MEDIA_OBB; 1495 } 1496 } else { 1497#if MEASURE_DEBUG 1498 LOG(DEBUG) << "quotactl() for GID " << AID_MEDIA_OBB << " " << dq.dqb_curspace; 1499#endif 1500 extStats.codeSize += dq.dqb_curspace; 1501 } 1502 ATRACE_END(); 1503 1504 ATRACE_BEGIN("code"); 1505 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1506 ATRACE_END(); 1507 1508 ATRACE_BEGIN("data"); 1509 auto cePath = create_data_user_ce_path(uuid_, userId); 1510 collectManualStatsForUser(cePath, &stats, true); 1511 auto dePath = create_data_user_de_path(uuid_, userId); 1512 collectManualStatsForUser(dePath, &stats, true); 1513 ATRACE_END(); 1514 1515 if (!uuid) { 1516 ATRACE_BEGIN("profile"); 1517 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1518 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1519 auto refProfilePath = create_primary_ref_profile_dir_path(); 1520 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1521 ATRACE_END(); 1522 } 1523 1524 ATRACE_BEGIN("external"); 1525 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1526 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1527 reinterpret_cast<char*>(&dq)) != 0) { 1528 if (errno != ESRCH) { 1529 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1530 } 1531 } else { 1532#if MEASURE_DEBUG 1533 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1534#endif 1535 extStats.dataSize += dq.dqb_curspace; 1536 } 1537 ATRACE_END(); 1538 1539 if (!uuid) { 1540 ATRACE_BEGIN("dalvik"); 1541 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1542 -1, -1, true); 1543 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, 1544 -1, -1, true); 1545 ATRACE_END(); 1546 } 1547 1548 ATRACE_BEGIN("quota"); 1549 int64_t dataSize = extStats.dataSize; 1550 for (auto appId : appIds) { 1551 if (appId >= AID_APP_START) { 1552 collectQuotaStats(device, userId, appId, &stats, &extStats); 1553 1554#if MEASURE_DEBUG 1555 // Sleep to make sure we don't lose logs 1556 usleep(1); 1557#endif 1558 } 1559 } 1560 extStats.dataSize = dataSize; 1561 ATRACE_END(); 1562 } else { 1563 ATRACE_BEGIN("obb"); 1564 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1565 calculate_tree_size(obbPath, &extStats.codeSize); 1566 ATRACE_END(); 1567 1568 ATRACE_BEGIN("code"); 1569 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1570 ATRACE_END(); 1571 1572 ATRACE_BEGIN("data"); 1573 auto cePath = create_data_user_ce_path(uuid_, userId); 1574 collectManualStatsForUser(cePath, &stats); 1575 auto dePath = create_data_user_de_path(uuid_, userId); 1576 collectManualStatsForUser(dePath, &stats); 1577 ATRACE_END(); 1578 1579 if (!uuid) { 1580 ATRACE_BEGIN("profile"); 1581 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1582 calculate_tree_size(userProfilePath, &stats.dataSize); 1583 auto refProfilePath = create_primary_ref_profile_dir_path(); 1584 calculate_tree_size(refProfilePath, &stats.codeSize); 1585 ATRACE_END(); 1586 } 1587 1588 ATRACE_BEGIN("external"); 1589 auto dataMediaPath = create_data_media_path(uuid_, userId); 1590 collectManualExternalStatsForUser(dataMediaPath, &extStats); 1591#if MEASURE_DEBUG 1592 LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " 1593 << extStats.cacheSize; 1594#endif 1595 ATRACE_END(); 1596 1597 if (!uuid) { 1598 ATRACE_BEGIN("dalvik"); 1599 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1600 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize); 1601 ATRACE_END(); 1602 } 1603 } 1604 1605 std::vector<int64_t> ret; 1606 ret.push_back(stats.codeSize); 1607 ret.push_back(stats.dataSize); 1608 ret.push_back(stats.cacheSize); 1609 ret.push_back(extStats.codeSize); 1610 ret.push_back(extStats.dataSize); 1611 ret.push_back(extStats.cacheSize); 1612#if MEASURE_DEBUG 1613 LOG(DEBUG) << "Final result " << toString(ret); 1614#endif 1615 *_aidl_return = ret; 1616 return ok(); 1617} 1618 1619binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1620 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1621 std::vector<int64_t>* _aidl_return) { 1622 ENFORCE_UID(AID_SYSTEM); 1623 CHECK_ARGUMENT_UUID(uuid); 1624 // NOTE: Locking is relaxed on this method, since it's limited to 1625 // read-only measurements without mutation. 1626 1627 // When modifying this logic, always verify using tests: 1628 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1629 1630#if MEASURE_DEBUG 1631 LOG(INFO) << "Measuring external " << userId; 1632#endif 1633 1634 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1635 1636 int64_t totalSize = 0; 1637 int64_t audioSize = 0; 1638 int64_t videoSize = 0; 1639 int64_t imageSize = 0; 1640 int64_t appSize = 0; 1641 1642 auto device = findQuotaDeviceForUuid(uuid); 1643 if (device.empty()) { 1644 flags &= ~FLAG_USE_QUOTA; 1645 } 1646 1647 if (flags & FLAG_USE_QUOTA) { 1648 struct dqblk dq; 1649 1650 ATRACE_BEGIN("quota"); 1651 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1652 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1653 reinterpret_cast<char*>(&dq)) != 0) { 1654 if (errno != ESRCH) { 1655 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1656 } 1657 } else { 1658#if MEASURE_DEBUG 1659 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1660#endif 1661 totalSize = dq.dqb_curspace; 1662 } 1663 1664 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1665 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1666 reinterpret_cast<char*>(&dq)) == 0) { 1667#if MEASURE_DEBUG 1668 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1669#endif 1670 audioSize = dq.dqb_curspace; 1671 } 1672 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1673 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1674 reinterpret_cast<char*>(&dq)) == 0) { 1675#if MEASURE_DEBUG 1676 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1677#endif 1678 videoSize = dq.dqb_curspace; 1679 } 1680 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1681 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1682 reinterpret_cast<char*>(&dq)) == 0) { 1683#if MEASURE_DEBUG 1684 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1685#endif 1686 imageSize = dq.dqb_curspace; 1687 } 1688 ATRACE_END(); 1689 1690 ATRACE_BEGIN("apps"); 1691 struct stats extStats; 1692 memset(&extStats, 0, sizeof(extStats)); 1693 for (auto appId : appIds) { 1694 if (appId >= AID_APP_START) { 1695 collectQuotaStats(device, userId, appId, nullptr, &extStats); 1696 } 1697 } 1698 appSize = extStats.dataSize + extStats.cacheSize; 1699 ATRACE_END(); 1700 } else { 1701 ATRACE_BEGIN("manual"); 1702 FTS *fts; 1703 FTSENT *p; 1704 auto path = create_data_media_path(uuid_, userId); 1705 char *argv[] = { (char*) path.c_str(), nullptr }; 1706 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1707 return error("Failed to fts_open " + path); 1708 } 1709 while ((p = fts_read(fts)) != NULL) { 1710 char* ext; 1711 int64_t size = (p->fts_statp->st_blocks * 512); 1712 switch (p->fts_info) { 1713 case FTS_F: 1714 // Only categorize files not belonging to apps 1715 if (p->fts_parent->fts_number == 0) { 1716 ext = strrchr(p->fts_name, '.'); 1717 if (ext != nullptr) { 1718 switch (MatchExtension(++ext)) { 1719 case AID_MEDIA_AUDIO: audioSize += size; break; 1720 case AID_MEDIA_VIDEO: videoSize += size; break; 1721 case AID_MEDIA_IMAGE: imageSize += size; break; 1722 } 1723 } 1724 } 1725 // Fall through to always count against total 1726 case FTS_D: 1727 // Ignore data belonging to specific apps 1728 p->fts_number = p->fts_parent->fts_number; 1729 if (p->fts_level == 1 && !strcmp(p->fts_name, "Android")) { 1730 p->fts_number = 1; 1731 } 1732 case FTS_DEFAULT: 1733 case FTS_SL: 1734 case FTS_SLNONE: 1735 if (p->fts_parent->fts_number == 1) { 1736 appSize += size; 1737 } 1738 totalSize += size; 1739 break; 1740 } 1741 } 1742 fts_close(fts); 1743 ATRACE_END(); 1744 } 1745 1746 std::vector<int64_t> ret; 1747 ret.push_back(totalSize); 1748 ret.push_back(audioSize); 1749 ret.push_back(videoSize); 1750 ret.push_back(imageSize); 1751 ret.push_back(appSize); 1752#if MEASURE_DEBUG 1753 LOG(DEBUG) << "Final result " << toString(ret); 1754#endif 1755 *_aidl_return = ret; 1756 return ok(); 1757} 1758 1759binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, 1760 int32_t userId, int32_t appId, int64_t cacheQuota) { 1761 ENFORCE_UID(AID_SYSTEM); 1762 CHECK_ARGUMENT_UUID(uuid); 1763 std::lock_guard<std::recursive_mutex> lock(mQuotasLock); 1764 1765 int32_t uid = multiuser_get_uid(userId, appId); 1766 mCacheQuotas[uid] = cacheQuota; 1767 1768 return ok(); 1769} 1770 1771// Dumps the contents of a profile file, using pkgname's dex files for pretty 1772// printing the result. 1773binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1774 const std::string& codePaths, bool* _aidl_return) { 1775 ENFORCE_UID(AID_SYSTEM); 1776 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1777 std::lock_guard<std::recursive_mutex> lock(mLock); 1778 1779 const char* pkgname = packageName.c_str(); 1780 const char* code_paths = codePaths.c_str(); 1781 1782 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1783 return ok(); 1784} 1785 1786// TODO: Consider returning error codes. 1787binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1788 bool* _aidl_return) { 1789 ENFORCE_UID(AID_SYSTEM); 1790 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1791 std::lock_guard<std::recursive_mutex> lock(mLock); 1792 1793 *_aidl_return = analyze_primary_profiles(uid, packageName); 1794 return ok(); 1795} 1796 1797binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1798 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1799 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1800 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1801 const std::unique_ptr<std::string>& sharedLibraries, 1802 const std::unique_ptr<std::string>& seInfo) { 1803 ENFORCE_UID(AID_SYSTEM); 1804 CHECK_ARGUMENT_UUID(uuid); 1805 if (packageName && *packageName != "*") { 1806 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1807 } 1808 std::lock_guard<std::recursive_mutex> lock(mLock); 1809 1810 const char* apk_path = apkPath.c_str(); 1811 const char* pkgname = packageName ? packageName->c_str() : "*"; 1812 const char* instruction_set = instructionSet.c_str(); 1813 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1814 const char* compiler_filter = compilerFilter.c_str(); 1815 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1816 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1817 const char* se_info = seInfo ? seInfo->c_str() : nullptr; 1818 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1819 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries, se_info); 1820 return res ? error(res, "Failed to dexopt") : ok(); 1821} 1822 1823binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1824 ENFORCE_UID(AID_SYSTEM); 1825 std::lock_guard<std::recursive_mutex> lock(mLock); 1826 1827 const char* instruction_set = instructionSet.c_str(); 1828 1829 char boot_marker_path[PKG_PATH_MAX]; 1830 sprintf(boot_marker_path, 1831 "%s/%s/%s/.booting", 1832 android_data_dir.path, 1833 DALVIK_CACHE, 1834 instruction_set); 1835 1836 ALOGV("mark_boot_complete : %s", boot_marker_path); 1837 if (unlink(boot_marker_path) != 0) { 1838 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1839 } 1840 return ok(); 1841} 1842 1843void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1844 struct stat* statbuf) 1845{ 1846 while (path[basepos] != 0) { 1847 if (path[basepos] == '/') { 1848 path[basepos] = 0; 1849 if (lstat(path, statbuf) < 0) { 1850 ALOGV("Making directory: %s\n", path); 1851 if (mkdir(path, mode) == 0) { 1852 chown(path, uid, gid); 1853 } else { 1854 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1855 } 1856 } 1857 path[basepos] = '/'; 1858 basepos++; 1859 } 1860 basepos++; 1861 } 1862} 1863 1864binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1865 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1866 const std::string& nativeLibPath32, int32_t userId) { 1867 ENFORCE_UID(AID_SYSTEM); 1868 CHECK_ARGUMENT_UUID(uuid); 1869 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1870 std::lock_guard<std::recursive_mutex> lock(mLock); 1871 1872 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1873 const char* pkgname = packageName.c_str(); 1874 const char* asecLibDir = nativeLibPath32.c_str(); 1875 struct stat s, libStat; 1876 binder::Status res = ok(); 1877 1878 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1879 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1880 1881 const char* pkgdir = _pkgdir.c_str(); 1882 const char* libsymlink = _libsymlink.c_str(); 1883 1884 if (stat(pkgdir, &s) < 0) { 1885 return error("Failed to stat " + _pkgdir); 1886 } 1887 1888 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1889 return error("Failed to chown " + _pkgdir); 1890 } 1891 1892 if (chmod(pkgdir, 0700) < 0) { 1893 res = error("Failed to chmod " + _pkgdir); 1894 goto out; 1895 } 1896 1897 if (lstat(libsymlink, &libStat) < 0) { 1898 if (errno != ENOENT) { 1899 res = error("Failed to stat " + _libsymlink); 1900 goto out; 1901 } 1902 } else { 1903 if (S_ISDIR(libStat.st_mode)) { 1904 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1905 res = error("Failed to delete " + _libsymlink); 1906 goto out; 1907 } 1908 } else if (S_ISLNK(libStat.st_mode)) { 1909 if (unlink(libsymlink) < 0) { 1910 res = error("Failed to unlink " + _libsymlink); 1911 goto out; 1912 } 1913 } 1914 } 1915 1916 if (symlink(asecLibDir, libsymlink) < 0) { 1917 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1918 goto out; 1919 } 1920 1921out: 1922 if (chmod(pkgdir, s.st_mode) < 0) { 1923 auto msg = "Failed to cleanup chmod " + _pkgdir; 1924 if (res.isOk()) { 1925 res = error(msg); 1926 } else { 1927 PLOG(ERROR) << msg; 1928 } 1929 } 1930 1931 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1932 auto msg = "Failed to cleanup chown " + _pkgdir; 1933 if (res.isOk()) { 1934 res = error(msg); 1935 } else { 1936 PLOG(ERROR) << msg; 1937 } 1938 } 1939 1940 return res; 1941} 1942 1943static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1944{ 1945 execl(kIdMapPath, kIdMapPath, "--fd", target_apk, overlay_apk, 1946 StringPrintf("%d", idmap_fd).c_str(), (char*)NULL); 1947 PLOG(ERROR) << "execl (" << kIdMapPath << ") failed"; 1948} 1949 1950static void run_verify_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1951{ 1952 execl(kIdMapPath, kIdMapPath, "--verify", target_apk, overlay_apk, 1953 StringPrintf("%d", idmap_fd).c_str(), (char*)NULL); 1954 PLOG(ERROR) << "execl (" << kIdMapPath << ") failed"; 1955} 1956 1957static bool delete_stale_idmap(const char* target_apk, const char* overlay_apk, 1958 const char* idmap_path, int32_t uid) { 1959 int idmap_fd = open(idmap_path, O_RDWR); 1960 if (idmap_fd < 0) { 1961 PLOG(ERROR) << "idmap open failed: " << idmap_path; 1962 unlink(idmap_path); 1963 return true; 1964 } 1965 1966 pid_t pid; 1967 pid = fork(); 1968 if (pid == 0) { 1969 /* child -- drop privileges before continuing */ 1970 if (setgid(uid) != 0) { 1971 LOG(ERROR) << "setgid(" << uid << ") failed during idmap"; 1972 exit(1); 1973 } 1974 if (setuid(uid) != 0) { 1975 LOG(ERROR) << "setuid(" << uid << ") failed during idmap"; 1976 exit(1); 1977 } 1978 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1979 PLOG(ERROR) << "flock(" << idmap_path << ") failed during idmap"; 1980 exit(1); 1981 } 1982 1983 run_verify_idmap(target_apk, overlay_apk, idmap_fd); 1984 exit(1); /* only if exec call to deleting stale idmap failed */ 1985 } else { 1986 int status = wait_child(pid); 1987 close(idmap_fd); 1988 1989 if (status != 0) { 1990 // Failed on verifying if idmap is made from target_apk and overlay_apk. 1991 LOG(DEBUG) << "delete stale idmap: " << idmap_path; 1992 unlink(idmap_path); 1993 return true; 1994 } 1995 } 1996 return false; 1997} 1998 1999// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 2000// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 2001static int flatten_path(const char *prefix, const char *suffix, 2002 const char *overlay_path, char *idmap_path, size_t N) 2003{ 2004 if (overlay_path == NULL || idmap_path == NULL) { 2005 return -1; 2006 } 2007 const size_t len_overlay_path = strlen(overlay_path); 2008 // will access overlay_path + 1 further below; requires absolute path 2009 if (len_overlay_path < 2 || *overlay_path != '/') { 2010 return -1; 2011 } 2012 const size_t len_idmap_root = strlen(prefix); 2013 const size_t len_suffix = strlen(suffix); 2014 if (SIZE_MAX - len_idmap_root < len_overlay_path || 2015 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 2016 // additions below would cause overflow 2017 return -1; 2018 } 2019 if (N < len_idmap_root + len_overlay_path + len_suffix) { 2020 return -1; 2021 } 2022 memset(idmap_path, 0, N); 2023 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 2024 char *ch = idmap_path + len_idmap_root; 2025 while (*ch != '\0') { 2026 if (*ch == '/') { 2027 *ch = '@'; 2028 } 2029 ++ch; 2030 } 2031 return 0; 2032} 2033 2034binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 2035 const std::string& overlayApkPath, int32_t uid) { 2036 ENFORCE_UID(AID_SYSTEM); 2037 std::lock_guard<std::recursive_mutex> lock(mLock); 2038 2039 const char* target_apk = targetApkPath.c_str(); 2040 const char* overlay_apk = overlayApkPath.c_str(); 2041 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 2042 2043 int idmap_fd = -1; 2044 char idmap_path[PATH_MAX]; 2045 struct stat idmap_stat; 2046 bool outdated = false; 2047 2048 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 2049 idmap_path, sizeof(idmap_path)) == -1) { 2050 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 2051 goto fail; 2052 } 2053 2054 if (stat(idmap_path, &idmap_stat) < 0) { 2055 outdated = true; 2056 } else { 2057 outdated = delete_stale_idmap(target_apk, overlay_apk, idmap_path, uid); 2058 } 2059 2060 if (outdated) { 2061 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 2062 } else { 2063 idmap_fd = open(idmap_path, O_RDWR); 2064 } 2065 2066 if (idmap_fd < 0) { 2067 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 2068 goto fail; 2069 } 2070 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 2071 ALOGE("idmap cannot chown '%s'\n", idmap_path); 2072 goto fail; 2073 } 2074 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 2075 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 2076 goto fail; 2077 } 2078 2079 if (!outdated) { 2080 close(idmap_fd); 2081 return ok(); 2082 } 2083 2084 pid_t pid; 2085 pid = fork(); 2086 if (pid == 0) { 2087 /* child -- drop privileges before continuing */ 2088 if (setgid(uid) != 0) { 2089 ALOGE("setgid(%d) failed during idmap\n", uid); 2090 exit(1); 2091 } 2092 if (setuid(uid) != 0) { 2093 ALOGE("setuid(%d) failed during idmap\n", uid); 2094 exit(1); 2095 } 2096 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 2097 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 2098 exit(1); 2099 } 2100 2101 run_idmap(target_apk, overlay_apk, idmap_fd); 2102 exit(1); /* only if exec call to idmap failed */ 2103 } else { 2104 int status = wait_child(pid); 2105 if (status != 0) { 2106 ALOGE("idmap failed, status=0x%04x\n", status); 2107 goto fail; 2108 } 2109 } 2110 2111 close(idmap_fd); 2112 return ok(); 2113fail: 2114 if (idmap_fd >= 0) { 2115 close(idmap_fd); 2116 unlink(idmap_path); 2117 } 2118 return error(); 2119} 2120 2121binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) { 2122 const char* overlay_apk = overlayApkPath.c_str(); 2123 char idmap_path[PATH_MAX]; 2124 2125 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 2126 idmap_path, sizeof(idmap_path)) == -1) { 2127 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 2128 return error(); 2129 } 2130 if (unlink(idmap_path) < 0) { 2131 ALOGE("couldn't unlink idmap file %s\n", idmap_path); 2132 return error(); 2133 } 2134 return ok(); 2135} 2136 2137binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 2138 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 2139 const std::string& seInfo) { 2140 ENFORCE_UID(AID_SYSTEM); 2141 CHECK_ARGUMENT_UUID(uuid); 2142 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2143 std::lock_guard<std::recursive_mutex> lock(mLock); 2144 2145 binder::Status res = ok(); 2146 2147 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 2148 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 2149 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 2150 const char* pkgName = packageName.c_str(); 2151 const char* seinfo = seInfo.c_str(); 2152 2153 uid_t uid = multiuser_get_uid(userId, appId); 2154 if (flags & FLAG_STORAGE_CE) { 2155 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 2156 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2157 res = error("restorecon failed for " + path); 2158 } 2159 } 2160 if (flags & FLAG_STORAGE_DE) { 2161 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 2162 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 2163 res = error("restorecon failed for " + path); 2164 } 2165 } 2166 return res; 2167} 2168 2169binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 2170 const std::string& instructionSet) { 2171 ENFORCE_UID(AID_SYSTEM); 2172 std::lock_guard<std::recursive_mutex> lock(mLock); 2173 2174 const char* oat_dir = oatDir.c_str(); 2175 const char* instruction_set = instructionSet.c_str(); 2176 char oat_instr_dir[PKG_PATH_MAX]; 2177 2178 if (validate_apk_path(oat_dir)) { 2179 return error("Invalid path " + oatDir); 2180 } 2181 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2182 return error("Failed to prepare " + oatDir); 2183 } 2184 if (selinux_android_restorecon(oat_dir, 0)) { 2185 return error("Failed to restorecon " + oatDir); 2186 } 2187 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 2188 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 2189 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 2190 } 2191 return ok(); 2192} 2193 2194binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 2195 ENFORCE_UID(AID_SYSTEM); 2196 std::lock_guard<std::recursive_mutex> lock(mLock); 2197 2198 if (validate_apk_path(packageDir.c_str())) { 2199 return error("Invalid path " + packageDir); 2200 } 2201 if (delete_dir_contents_and_dir(packageDir) != 0) { 2202 return error("Failed to delete " + packageDir); 2203 } 2204 return ok(); 2205} 2206 2207binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 2208 const std::string& fromBase, const std::string& toBase) { 2209 ENFORCE_UID(AID_SYSTEM); 2210 std::lock_guard<std::recursive_mutex> lock(mLock); 2211 2212 const char* relative_path = relativePath.c_str(); 2213 const char* from_base = fromBase.c_str(); 2214 const char* to_base = toBase.c_str(); 2215 char from_path[PKG_PATH_MAX]; 2216 char to_path[PKG_PATH_MAX]; 2217 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 2218 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 2219 2220 if (validate_apk_path_subdirs(from_path)) { 2221 return error(StringPrintf("Invalid from path %s", from_path)); 2222 } 2223 2224 if (validate_apk_path_subdirs(to_path)) { 2225 return error(StringPrintf("Invalid to path %s", to_path)); 2226 } 2227 2228 if (link(from_path, to_path) < 0) { 2229 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 2230 } 2231 2232 return ok(); 2233} 2234 2235binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 2236 const std::string& instructionSet, const std::string& outputPath) { 2237 ENFORCE_UID(AID_SYSTEM); 2238 std::lock_guard<std::recursive_mutex> lock(mLock); 2239 2240 const char* apk_path = apkPath.c_str(); 2241 const char* instruction_set = instructionSet.c_str(); 2242 const char* oat_dir = outputPath.c_str(); 2243 2244 bool success = move_ab(apk_path, instruction_set, oat_dir); 2245 return success ? ok() : error(); 2246} 2247 2248binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 2249 const std::string& instructionSet, const std::string& outputPath) { 2250 ENFORCE_UID(AID_SYSTEM); 2251 std::lock_guard<std::recursive_mutex> lock(mLock); 2252 2253 const char* apk_path = apkPath.c_str(); 2254 const char* instruction_set = instructionSet.c_str(); 2255 const char* oat_dir = outputPath.c_str(); 2256 2257 bool res = delete_odex(apk_path, instruction_set, oat_dir); 2258 return res ? ok() : error(); 2259} 2260 2261binder::Status InstalldNativeService::reconcileSecondaryDexFile( 2262 const std::string& dexPath, const std::string& packageName, int32_t uid, 2263 const std::vector<std::string>& isas, const std::unique_ptr<std::string>& volumeUuid, 2264 int32_t storage_flag, bool* _aidl_return) { 2265 ENFORCE_UID(AID_SYSTEM); 2266 CHECK_ARGUMENT_UUID(volumeUuid); 2267 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2268 2269 std::lock_guard<std::recursive_mutex> lock(mLock); 2270 bool result = android::installd::reconcile_secondary_dex_file( 2271 dexPath, packageName, uid, isas, volumeUuid, storage_flag, _aidl_return); 2272 return result ? ok() : error(); 2273} 2274 2275binder::Status InstalldNativeService::invalidateMounts() { 2276 ENFORCE_UID(AID_SYSTEM); 2277 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 2278 2279 mStorageMounts.clear(); 2280 mQuotaReverseMounts.clear(); 2281 2282 std::ifstream in("/proc/mounts"); 2283 if (!in.is_open()) { 2284 return error("Failed to read mounts"); 2285 } 2286 2287 std::string source; 2288 std::string target; 2289 std::string ignored; 2290 while (!in.eof()) { 2291 std::getline(in, source, ' '); 2292 std::getline(in, target, ' '); 2293 std::getline(in, ignored); 2294 2295#if !BYPASS_SDCARDFS 2296 if (target.compare(0, 21, "/mnt/runtime/default/") == 0) { 2297 LOG(DEBUG) << "Found storage mount " << source << " at " << target; 2298 mStorageMounts[source] = target; 2299 } 2300#endif 2301 2302#if !BYPASS_QUOTA 2303 if (source.compare(0, 11, "/dev/block/") == 0) { 2304 struct dqblk dq; 2305 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 2306 reinterpret_cast<char*>(&dq)) == 0) { 2307 LOG(DEBUG) << "Found quota mount " << source << " at " << target; 2308 mQuotaReverseMounts[target] = source; 2309 2310 // ext4 only enables DQUOT_USAGE_ENABLED by default, so we 2311 // need to kick it again to enable DQUOT_LIMITS_ENABLED. 2312 if (quotactl(QCMD(Q_QUOTAON, USRQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2313 && errno != EBUSY) { 2314 PLOG(ERROR) << "Failed to enable USRQUOTA on " << source; 2315 } 2316 if (quotactl(QCMD(Q_QUOTAON, GRPQUOTA), source.c_str(), QFMT_VFS_V1, nullptr) != 0 2317 && errno != EBUSY) { 2318 PLOG(ERROR) << "Failed to enable GRPQUOTA on " << source; 2319 } 2320 } 2321 } 2322#endif 2323 } 2324 return ok(); 2325} 2326 2327std::string InstalldNativeService::findDataMediaPath( 2328 const std::unique_ptr<std::string>& uuid, userid_t userid) { 2329 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 2330 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 2331 auto path = StringPrintf("%s/media", create_data_path(uuid_).c_str()); 2332 auto resolved = mStorageMounts[path]; 2333 if (resolved.empty()) { 2334 LOG(WARNING) << "Failed to find storage mount for " << path; 2335 resolved = path; 2336 } 2337 return StringPrintf("%s/%u", resolved.c_str(), userid); 2338} 2339 2340std::string InstalldNativeService::findQuotaDeviceForUuid( 2341 const std::unique_ptr<std::string>& uuid) { 2342 std::lock_guard<std::recursive_mutex> lock(mMountsLock); 2343 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 2344 return mQuotaReverseMounts[path]; 2345} 2346 2347binder::Status InstalldNativeService::isQuotaSupported( 2348 const std::unique_ptr<std::string>& volumeUuid, bool* _aidl_return) { 2349 *_aidl_return = !findQuotaDeviceForUuid(volumeUuid).empty(); 2350 return ok(); 2351} 2352 2353} // namespace installd 2354} // namespace android 2355