InstalldNativeService.cpp revision ed909ae8db2f44ce7fe7003c6fee457f13669702
1/* 2** Copyright 2008, The Android Open Source Project 3** 4** Licensed under the Apache License, Version 2.0 (the "License"); 5** you may not use this file except in compliance with the License. 6** You may obtain a copy of the License at 7** 8** http://www.apache.org/licenses/LICENSE-2.0 9** 10** Unless required by applicable law or agreed to in writing, software 11** distributed under the License is distributed on an "AS IS" BASIS, 12** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13** See the License for the specific language governing permissions and 14** limitations under the License. 15*/ 16 17#include "InstalldNativeService.h" 18 19#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER 20 21#include <errno.h> 22#include <inttypes.h> 23#include <fstream> 24#include <fts.h> 25#include <regex> 26#include <stdlib.h> 27#include <string.h> 28#include <sys/capability.h> 29#include <sys/file.h> 30#include <sys/resource.h> 31#include <sys/quota.h> 32#include <sys/stat.h> 33#include <sys/statvfs.h> 34#include <sys/types.h> 35#include <sys/wait.h> 36#include <sys/xattr.h> 37#include <unistd.h> 38 39#include <android-base/logging.h> 40#include <android-base/stringprintf.h> 41#include <android-base/strings.h> 42#include <android-base/unique_fd.h> 43#include <cutils/fs.h> 44#include <cutils/properties.h> 45#include <cutils/sched_policy.h> 46#include <log/log.h> // TODO: Move everything to base/logging. 47#include <logwrap/logwrap.h> 48#include <private/android_filesystem_config.h> 49#include <selinux/android.h> 50#include <system/thread_defs.h> 51#include <utils/Trace.h> 52 53#include "dexopt.h" 54#include "globals.h" 55#include "installd_deps.h" 56#include "otapreopt_utils.h" 57#include "utils.h" 58 59#include "CacheTracker.h" 60#include "MatchExtensionGen.h" 61 62#ifndef LOG_TAG 63#define LOG_TAG "installd" 64#endif 65 66using android::base::StringPrintf; 67using std::endl; 68 69namespace android { 70namespace installd { 71 72static constexpr const char* kCpPath = "/system/bin/cp"; 73static constexpr const char* kXattrDefault = "user.default"; 74 75static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 76 77static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 78static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 79static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 80 81static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 82static constexpr const char* IDMAP_SUFFIX = "@idmap"; 83 84// NOTE: keep in sync with Installer 85static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 86static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 87static constexpr int FLAG_USE_QUOTA = 1 << 12; 88static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13; 89static constexpr int FLAG_FREE_CACHE_V2_DEFY_QUOTA = 1 << 14; 90static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 15; 91 92namespace { 93 94constexpr const char* kDump = "android.permission.DUMP"; 95 96static binder::Status ok() { 97 return binder::Status::ok(); 98} 99 100static binder::Status exception(uint32_t code, const std::string& msg) { 101 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 102} 103 104static binder::Status error() { 105 return binder::Status::fromServiceSpecificError(errno); 106} 107 108static binder::Status error(const std::string& msg) { 109 PLOG(ERROR) << msg; 110 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 111} 112 113static binder::Status error(uint32_t code, const std::string& msg) { 114 LOG(ERROR) << msg << " (" << code << ")"; 115 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 116} 117 118binder::Status checkPermission(const char* permission) { 119 pid_t pid; 120 uid_t uid; 121 122 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 123 reinterpret_cast<int32_t*>(&uid))) { 124 return ok(); 125 } else { 126 return exception(binder::Status::EX_SECURITY, 127 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 128 } 129} 130 131binder::Status checkUid(uid_t expectedUid) { 132 uid_t uid = IPCThreadState::self()->getCallingUid(); 133 if (uid == expectedUid || uid == AID_ROOT) { 134 return ok(); 135 } else { 136 return exception(binder::Status::EX_SECURITY, 137 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 138 } 139} 140 141binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 142 if (!uuid || is_valid_filename(*uuid)) { 143 return ok(); 144 } else { 145 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 146 StringPrintf("UUID %s is malformed", uuid->c_str())); 147 } 148} 149 150binder::Status checkArgumentPackageName(const std::string& packageName) { 151 if (is_valid_package_name(packageName.c_str())) { 152 return ok(); 153 } else { 154 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 155 StringPrintf("Package name %s is malformed", packageName.c_str())); 156 } 157} 158 159#define ENFORCE_UID(uid) { \ 160 binder::Status status = checkUid((uid)); \ 161 if (!status.isOk()) { \ 162 return status; \ 163 } \ 164} 165 166#define CHECK_ARGUMENT_UUID(uuid) { \ 167 binder::Status status = checkArgumentUuid((uuid)); \ 168 if (!status.isOk()) { \ 169 return status; \ 170 } \ 171} 172 173#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 174 binder::Status status = \ 175 checkArgumentPackageName((packageName)); \ 176 if (!status.isOk()) { \ 177 return status; \ 178 } \ 179} 180 181} // namespace 182 183status_t InstalldNativeService::start() { 184 IPCThreadState::self()->disableBackgroundScheduling(true); 185 status_t ret = BinderService<InstalldNativeService>::publish(); 186 if (ret != android::OK) { 187 return ret; 188 } 189 sp<ProcessState> ps(ProcessState::self()); 190 ps->startThreadPool(); 191 ps->giveThreadPoolName(); 192 return android::OK; 193} 194 195status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 196 auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd)); 197 const binder::Status dump_permission = checkPermission(kDump); 198 if (!dump_permission.isOk()) { 199 out << dump_permission.toString8() << endl; 200 return PERMISSION_DENIED; 201 } 202 std::lock_guard<std::recursive_mutex> lock(mLock); 203 204 out << "installd is happy!" << endl; 205 206 { 207 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 208 out << endl << "Devices with quota support:" << endl; 209 for (const auto& n : mQuotaDevices) { 210 out << " " << n.first << " = " << n.second << endl; 211 } 212 } 213 214 { 215 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 216 out << endl << "Per-UID cache quotas:" << endl; 217 for (const auto& n : mCacheQuotas) { 218 out << " " << n.first << " = " << n.second << endl; 219 } 220 } 221 222 out << endl; 223 out.flush(); 224 225 return NO_ERROR; 226} 227 228/** 229 * Perform restorecon of the given path, but only perform recursive restorecon 230 * if the label of that top-level file actually changed. This can save us 231 * significant time by avoiding no-op traversals of large filesystem trees. 232 */ 233static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid, 234 bool existing) { 235 int res = 0; 236 char* before = nullptr; 237 char* after = nullptr; 238 239 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 240 // libselinux. Not needed here. 241 242 if (lgetfilecon(path.c_str(), &before) < 0) { 243 PLOG(ERROR) << "Failed before getfilecon for " << path; 244 goto fail; 245 } 246 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 247 PLOG(ERROR) << "Failed top-level restorecon for " << path; 248 goto fail; 249 } 250 if (lgetfilecon(path.c_str(), &after) < 0) { 251 PLOG(ERROR) << "Failed after getfilecon for " << path; 252 goto fail; 253 } 254 255 // If the initial top-level restorecon above changed the label, then go 256 // back and restorecon everything recursively 257 if (strcmp(before, after)) { 258 if (existing) { 259 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 260 << path << "; running recursive restorecon"; 261 } 262 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 263 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 264 PLOG(ERROR) << "Failed recursive restorecon for " << path; 265 goto fail; 266 } 267 } 268 269 goto done; 270fail: 271 res = -1; 272done: 273 free(before); 274 free(after); 275 return res; 276} 277 278static int restorecon_app_data_lazy(const std::string& parent, const char* name, 279 const std::string& seInfo, uid_t uid, bool existing) { 280 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 281 existing); 282} 283 284static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 285 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 286 PLOG(ERROR) << "Failed to prepare " << path; 287 return -1; 288 } 289 return 0; 290} 291 292binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 293 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 294 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 295 ENFORCE_UID(AID_SYSTEM); 296 CHECK_ARGUMENT_UUID(uuid); 297 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 298 std::lock_guard<std::recursive_mutex> lock(mLock); 299 300 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 301 const char* pkgname = packageName.c_str(); 302 303 // Assume invalid inode unless filled in below 304 if (_aidl_return != nullptr) *_aidl_return = -1; 305 306 int32_t uid = multiuser_get_uid(userId, appId); 307 int32_t cacheGid = multiuser_get_cache_gid(userId, appId); 308 mode_t targetMode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 309 310 // If UID doesn't have a specific cache GID, use UID value 311 if (cacheGid == -1) { 312 cacheGid = uid; 313 } 314 315 if (flags & FLAG_STORAGE_CE) { 316 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 317 bool existing = (access(path.c_str(), F_OK) == 0); 318 319 if (prepare_app_dir(path, targetMode, uid) || 320 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 321 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 322 return error("Failed to prepare " + path); 323 } 324 325 // Consider restorecon over contents if label changed 326 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 327 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 328 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 329 return error("Failed to restorecon " + path); 330 } 331 332 // Remember inode numbers of cache directories so that we can clear 333 // contents while CE storage is locked 334 if (write_path_inode(path, "cache", kXattrInodeCache) || 335 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 336 return error("Failed to write_path_inode for " + path); 337 } 338 339 // And return the CE inode of the top-level data directory so we can 340 // clear contents while CE storage is locked 341 if ((_aidl_return != nullptr) 342 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 343 return error("Failed to get_path_inode for " + path); 344 } 345 } 346 if (flags & FLAG_STORAGE_DE) { 347 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 348 bool existing = (access(path.c_str(), F_OK) == 0); 349 350 if (prepare_app_dir(path, targetMode, uid) || 351 prepare_app_cache_dir(path, "cache", 02771, uid, cacheGid) || 352 prepare_app_cache_dir(path, "code_cache", 02771, uid, cacheGid)) { 353 return error("Failed to prepare " + path); 354 } 355 356 // Consider restorecon over contents if label changed 357 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 358 return error("Failed to restorecon " + path); 359 } 360 361 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 362 const std::string profile_dir = 363 create_primary_current_profile_package_dir_path(userId, pkgname); 364 // read-write-execute only for the app user. 365 if (fs_prepare_dir_strict(profile_dir.c_str(), 0700, uid, uid) != 0) { 366 return error("Failed to prepare " + profile_dir); 367 } 368 const std::string profile_file = create_current_profile_path(userId, pkgname, 369 /*is_secondary_dex*/false); 370 // read-write only for the app user. 371 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 372 return error("Failed to prepare " + profile_file); 373 } 374 const std::string ref_profile_path = 375 create_primary_reference_profile_package_dir_path(pkgname); 376 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 377 // profiles. 378 int shared_app_gid = multiuser_get_shared_gid(0, appId); 379 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 380 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 381 return error("Failed to prepare " + ref_profile_path); 382 } 383 } 384 } 385 return ok(); 386} 387 388binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 389 const std::string& packageName, int32_t userId, int32_t flags) { 390 ENFORCE_UID(AID_SYSTEM); 391 CHECK_ARGUMENT_UUID(uuid); 392 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 393 std::lock_guard<std::recursive_mutex> lock(mLock); 394 395 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 396 const char* pkgname = packageName.c_str(); 397 398 // This method only exists to upgrade system apps that have requested 399 // forceDeviceEncrypted, so their default storage always lives in a 400 // consistent location. This only works on non-FBE devices, since we 401 // never want to risk exposing data on a device with real CE/DE storage. 402 403 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 404 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 405 406 // If neither directory is marked as default, assume CE is default 407 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 408 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 409 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 410 return error("Failed to mark default storage " + ce_path); 411 } 412 } 413 414 // Migrate default data location if needed 415 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 416 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 417 418 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 419 LOG(WARNING) << "Requested default storage " << target 420 << " is not active; migrating from " << source; 421 if (delete_dir_contents_and_dir(target) != 0) { 422 return error("Failed to delete " + target); 423 } 424 if (rename(source.c_str(), target.c_str()) != 0) { 425 return error("Failed to rename " + source + " to " + target); 426 } 427 } 428 429 return ok(); 430} 431 432 433binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 434 ENFORCE_UID(AID_SYSTEM); 435 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 436 std::lock_guard<std::recursive_mutex> lock(mLock); 437 438 binder::Status res = ok(); 439 if (!clear_primary_reference_profile(packageName)) { 440 res = error("Failed to clear reference profile for " + packageName); 441 } 442 if (!clear_primary_current_profiles(packageName)) { 443 res = error("Failed to clear current profiles for " + packageName); 444 } 445 return res; 446} 447 448binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 449 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 450 ENFORCE_UID(AID_SYSTEM); 451 CHECK_ARGUMENT_UUID(uuid); 452 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 453 std::lock_guard<std::recursive_mutex> lock(mLock); 454 455 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 456 const char* pkgname = packageName.c_str(); 457 458 binder::Status res = ok(); 459 if (flags & FLAG_STORAGE_CE) { 460 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 461 if (flags & FLAG_CLEAR_CACHE_ONLY) { 462 path = read_path_inode(path, "cache", kXattrInodeCache); 463 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 464 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 465 } 466 if (access(path.c_str(), F_OK) == 0) { 467 if (delete_dir_contents(path) != 0) { 468 res = error("Failed to delete contents of " + path); 469 } 470 } 471 } 472 if (flags & FLAG_STORAGE_DE) { 473 std::string suffix = ""; 474 bool only_cache = false; 475 if (flags & FLAG_CLEAR_CACHE_ONLY) { 476 suffix = CACHE_DIR_POSTFIX; 477 only_cache = true; 478 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 479 suffix = CODE_CACHE_DIR_POSTFIX; 480 only_cache = true; 481 } 482 483 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 484 if (access(path.c_str(), F_OK) == 0) { 485 if (delete_dir_contents(path) != 0) { 486 res = error("Failed to delete contents of " + path); 487 } 488 } 489 if (!only_cache) { 490 if (!clear_primary_current_profile(packageName, userId)) { 491 res = error("Failed to clear current profile for " + packageName); 492 } 493 } 494 } 495 return res; 496} 497 498static int destroy_app_reference_profile(const std::string& pkgname) { 499 return delete_dir_contents_and_dir( 500 create_primary_reference_profile_package_dir_path(pkgname), 501 /*ignore_if_missing*/ true); 502} 503 504static int destroy_app_current_profiles(const std::string& pkgname, userid_t userid) { 505 return delete_dir_contents_and_dir( 506 create_primary_current_profile_package_dir_path(userid, pkgname), 507 /*ignore_if_missing*/ true); 508} 509 510binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 511 ENFORCE_UID(AID_SYSTEM); 512 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 513 std::lock_guard<std::recursive_mutex> lock(mLock); 514 515 binder::Status res = ok(); 516 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 517 for (auto user : users) { 518 if (destroy_app_current_profiles(packageName, user) != 0) { 519 res = error("Failed to destroy current profiles for " + packageName); 520 } 521 } 522 if (destroy_app_reference_profile(packageName) != 0) { 523 res = error("Failed to destroy reference profile for " + packageName); 524 } 525 return res; 526} 527 528binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 529 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 530 ENFORCE_UID(AID_SYSTEM); 531 CHECK_ARGUMENT_UUID(uuid); 532 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 533 std::lock_guard<std::recursive_mutex> lock(mLock); 534 535 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 536 const char* pkgname = packageName.c_str(); 537 538 binder::Status res = ok(); 539 if (flags & FLAG_STORAGE_CE) { 540 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 541 if (delete_dir_contents_and_dir(path) != 0) { 542 res = error("Failed to delete " + path); 543 } 544 } 545 if (flags & FLAG_STORAGE_DE) { 546 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 547 if (delete_dir_contents_and_dir(path) != 0) { 548 res = error("Failed to delete " + path); 549 } 550 destroy_app_current_profiles(packageName, userId); 551 // TODO(calin): If the package is still installed by other users it's probably 552 // beneficial to keep the reference profile around. 553 // Verify if it's ok to do that. 554 destroy_app_reference_profile(packageName); 555 } 556 return res; 557} 558 559binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 560 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 561 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 562 int32_t targetSdkVersion) { 563 ENFORCE_UID(AID_SYSTEM); 564 CHECK_ARGUMENT_UUID(fromUuid); 565 CHECK_ARGUMENT_UUID(toUuid); 566 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 567 std::lock_guard<std::recursive_mutex> lock(mLock); 568 569 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 570 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 571 const char* package_name = packageName.c_str(); 572 const char* data_app_name = dataAppName.c_str(); 573 574 binder::Status res = ok(); 575 std::vector<userid_t> users = get_known_users(from_uuid); 576 577 // Copy app 578 { 579 auto from = create_data_app_package_path(from_uuid, data_app_name); 580 auto to = create_data_app_package_path(to_uuid, data_app_name); 581 auto to_parent = create_data_app_path(to_uuid); 582 583 char *argv[] = { 584 (char*) kCpPath, 585 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 586 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 587 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 588 (char*) "-P", /* Do not follow symlinks [default] */ 589 (char*) "-d", /* don't dereference symlinks */ 590 (char*) from.c_str(), 591 (char*) to_parent.c_str() 592 }; 593 594 LOG(DEBUG) << "Copying " << from << " to " << to; 595 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 596 if (rc != 0) { 597 res = error(rc, "Failed copying " + from + " to " + to); 598 goto fail; 599 } 600 601 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 602 res = error("Failed to restorecon " + to); 603 goto fail; 604 } 605 } 606 607 // Copy private data for all known users 608 for (auto user : users) { 609 610 // Data source may not exist for all users; that's okay 611 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 612 if (access(from_ce.c_str(), F_OK) != 0) { 613 LOG(INFO) << "Missing source " << from_ce; 614 continue; 615 } 616 617 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 618 seInfo, targetSdkVersion, nullptr).isOk()) { 619 res = error("Failed to create package target"); 620 goto fail; 621 } 622 623 char *argv[] = { 624 (char*) kCpPath, 625 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 626 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 627 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 628 (char*) "-P", /* Do not follow symlinks [default] */ 629 (char*) "-d", /* don't dereference symlinks */ 630 nullptr, 631 nullptr 632 }; 633 634 { 635 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 636 auto to = create_data_user_de_path(to_uuid, user); 637 argv[6] = (char*) from.c_str(); 638 argv[7] = (char*) to.c_str(); 639 640 LOG(DEBUG) << "Copying " << from << " to " << to; 641 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 642 if (rc != 0) { 643 res = error(rc, "Failed copying " + from + " to " + to); 644 goto fail; 645 } 646 } 647 { 648 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 649 auto to = create_data_user_ce_path(to_uuid, user); 650 argv[6] = (char*) from.c_str(); 651 argv[7] = (char*) to.c_str(); 652 653 LOG(DEBUG) << "Copying " << from << " to " << to; 654 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 655 if (rc != 0) { 656 res = error(rc, "Failed copying " + from + " to " + to); 657 goto fail; 658 } 659 } 660 661 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 662 appId, seInfo).isOk()) { 663 res = error("Failed to restorecon"); 664 goto fail; 665 } 666 } 667 668 // We let the framework scan the new location and persist that before 669 // deleting the data in the old location; this ordering ensures that 670 // we can recover from things like battery pulls. 671 return ok(); 672 673fail: 674 // Nuke everything we might have already copied 675 { 676 auto to = create_data_app_package_path(to_uuid, data_app_name); 677 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 678 LOG(WARNING) << "Failed to rollback " << to; 679 } 680 } 681 for (auto user : users) { 682 { 683 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 684 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 685 LOG(WARNING) << "Failed to rollback " << to; 686 } 687 } 688 { 689 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 690 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 691 LOG(WARNING) << "Failed to rollback " << to; 692 } 693 } 694 } 695 return res; 696} 697 698binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 699 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 700 ENFORCE_UID(AID_SYSTEM); 701 CHECK_ARGUMENT_UUID(uuid); 702 std::lock_guard<std::recursive_mutex> lock(mLock); 703 704 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 705 if (flags & FLAG_STORAGE_DE) { 706 if (uuid_ == nullptr) { 707 if (ensure_config_user_dirs(userId) != 0) { 708 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 709 } 710 } 711 } 712 return ok(); 713} 714 715binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 716 int32_t userId, int32_t flags) { 717 ENFORCE_UID(AID_SYSTEM); 718 CHECK_ARGUMENT_UUID(uuid); 719 std::lock_guard<std::recursive_mutex> lock(mLock); 720 721 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 722 binder::Status res = ok(); 723 if (flags & FLAG_STORAGE_DE) { 724 auto path = create_data_user_de_path(uuid_, userId); 725 if (delete_dir_contents_and_dir(path, true) != 0) { 726 res = error("Failed to delete " + path); 727 } 728 if (uuid_ == nullptr) { 729 path = create_data_misc_legacy_path(userId); 730 if (delete_dir_contents_and_dir(path, true) != 0) { 731 res = error("Failed to delete " + path); 732 } 733 path = create_primary_cur_profile_dir_path(userId); 734 if (delete_dir_contents_and_dir(path, true) != 0) { 735 res = error("Failed to delete " + path); 736 } 737 } 738 } 739 if (flags & FLAG_STORAGE_CE) { 740 auto path = create_data_user_ce_path(uuid_, userId); 741 if (delete_dir_contents_and_dir(path, true) != 0) { 742 res = error("Failed to delete " + path); 743 } 744 path = create_data_media_path(uuid_, userId); 745 if (delete_dir_contents_and_dir(path, true) != 0) { 746 res = error("Failed to delete " + path); 747 } 748 } 749 return res; 750} 751 752/* Try to ensure free_size bytes of storage are available. 753 * Returns 0 on success. 754 * This is rather simple-minded because doing a full LRU would 755 * be potentially memory-intensive, and without atime it would 756 * also require that apps constantly modify file metadata even 757 * when just reading from the cache, which is pretty awful. 758 */ 759binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 760 int64_t freeStorageSize, int32_t flags) { 761 ENFORCE_UID(AID_SYSTEM); 762 CHECK_ARGUMENT_UUID(uuid); 763 std::lock_guard<std::recursive_mutex> lock(mLock); 764 765 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 766 auto data_path = create_data_path(uuid_); 767 auto device = findQuotaDeviceForUuid(uuid); 768 auto noop = (flags & FLAG_FREE_CACHE_NOOP); 769 770 int64_t free = data_disk_free(data_path); 771 if (free < 0) { 772 return error("Failed to determine free space for " + data_path); 773 } 774 775 int64_t needed = freeStorageSize - free; 776 LOG(DEBUG) << "Device " << data_path << " has " << free << " free; requested " 777 << freeStorageSize << "; needed " << needed; 778 779 if (free >= freeStorageSize) { 780 return ok(); 781 } 782 783 if (flags & FLAG_FREE_CACHE_V2) { 784 // This new cache strategy fairly removes files from UIDs by deleting 785 // files from the UIDs which are most over their allocated quota 786 787 // 1. Create trackers for every known UID 788 ATRACE_BEGIN("create"); 789 std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers; 790 for (auto user : get_known_users(uuid_)) { 791 FTS *fts; 792 FTSENT *p; 793 char *argv[] = { 794 (char*) create_data_user_ce_path(uuid_, user).c_str(), 795 (char*) create_data_user_de_path(uuid_, user).c_str(), 796 nullptr 797 }; 798 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 799 return error("Failed to fts_open"); 800 } 801 while ((p = fts_read(fts)) != NULL) { 802 if (p->fts_info == FTS_D && p->fts_level == 1) { 803 uid_t uid = p->fts_statp->st_uid; 804 auto search = trackers.find(uid); 805 if (search != trackers.end()) { 806 search->second->addDataPath(p->fts_path); 807 } else { 808 auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker( 809 multiuser_get_user_id(uid), multiuser_get_app_id(uid), device)); 810 tracker->addDataPath(p->fts_path); 811 { 812 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 813 tracker->cacheQuota = mCacheQuotas[uid]; 814 } 815 if (tracker->cacheQuota == 0) { 816#if MEASURE_DEBUG 817 LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB"; 818#endif 819 tracker->cacheQuota = 67108864; 820 } 821 trackers[uid] = tracker; 822 } 823 fts_set(fts, p, FTS_SKIP); 824 } 825 } 826 fts_close(fts); 827 } 828 ATRACE_END(); 829 830 // 2. Populate tracker stats and insert into priority queue 831 ATRACE_BEGIN("populate"); 832 auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) { 833 return (left->getCacheRatio() < right->getCacheRatio()); 834 }; 835 std::priority_queue<std::shared_ptr<CacheTracker>, 836 std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp); 837 for (const auto& it : trackers) { 838 it.second->loadStats(); 839 queue.push(it.second); 840 } 841 ATRACE_END(); 842 843 // 3. Bounce across the queue, freeing items from whichever tracker is 844 // the most over their assigned quota 845 ATRACE_BEGIN("bounce"); 846 std::shared_ptr<CacheTracker> active; 847 while (active || !queue.empty()) { 848 // Only look at apps under quota when explicitly requested 849 if (active && (active->getCacheRatio() < 10000) 850 && !(flags & FLAG_FREE_CACHE_V2_DEFY_QUOTA)) { 851 LOG(DEBUG) << "Active ratio " << active->getCacheRatio() 852 << " isn't over quota, and defy not requested"; 853 break; 854 } 855 856 // Find the best tracker to work with; this might involve swapping 857 // if the active tracker is no longer the most over quota 858 bool nextBetter = active && !queue.empty() 859 && active->getCacheRatio() < queue.top()->getCacheRatio(); 860 if (!active || nextBetter) { 861 if (active) { 862 // Current tracker still has items, so we'll consider it 863 // again later once it bubbles up to surface 864 queue.push(active); 865 } 866 active = queue.top(); queue.pop(); 867 active->ensureItems(); 868 continue; 869 } 870 871 // If no items remain, go find another tracker 872 if (active->items.empty()) { 873 active = nullptr; 874 continue; 875 } else { 876 auto item = active->items.back(); 877 active->items.pop_back(); 878 879 LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString(); 880 if (!noop) { 881 item->purge(); 882 } 883 active->cacheUsed -= item->size; 884 needed -= item->size; 885 } 886 887 // Verify that we're actually done before bailing, since sneaky 888 // apps might be using hardlinks 889 if (needed <= 0) { 890 free = data_disk_free(data_path); 891 needed = freeStorageSize - free; 892 if (needed <= 0) { 893 break; 894 } else { 895 LOG(WARNING) << "Expected to be done but still need " << needed; 896 } 897 } 898 } 899 ATRACE_END(); 900 901 } else { 902 ATRACE_BEGIN("start"); 903 cache_t* cache = start_cache_collection(); 904 ATRACE_END(); 905 906 ATRACE_BEGIN("add"); 907 for (auto user : get_known_users(uuid_)) { 908 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 909 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 910 add_cache_files(cache, 911 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 912 } 913 // Add files from /data/preloads/file_cache 914 if (uuid == nullptr) { 915 add_preloads_file_cache(cache, uuid_); 916 } 917 ATRACE_END(); 918 919 ATRACE_BEGIN("clear"); 920 clear_cache_files(data_path, cache, freeStorageSize); 921 ATRACE_END(); 922 923 ATRACE_BEGIN("finish"); 924 finish_cache_collection(cache); 925 ATRACE_END(); 926 } 927 928 free = data_disk_free(data_path); 929 if (free >= freeStorageSize) { 930 return ok(); 931 } else { 932 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 933 freeStorageSize, data_path.c_str(), free)); 934 } 935} 936 937binder::Status InstalldNativeService::rmdex(const std::string& codePath, 938 const std::string& instructionSet) { 939 ENFORCE_UID(AID_SYSTEM); 940 std::lock_guard<std::recursive_mutex> lock(mLock); 941 942 char dex_path[PKG_PATH_MAX]; 943 944 const char* path = codePath.c_str(); 945 const char* instruction_set = instructionSet.c_str(); 946 947 if (validate_apk_path(path) && validate_system_app_path(path)) { 948 return error("Invalid path " + codePath); 949 } 950 951 if (!create_cache_path(dex_path, path, instruction_set)) { 952 return error("Failed to create cache path for " + codePath); 953 } 954 955 ALOGV("unlink %s\n", dex_path); 956 if (unlink(dex_path) < 0) { 957 return error(StringPrintf("Failed to unlink %s", dex_path)); 958 } else { 959 return ok(); 960 } 961} 962 963struct stats { 964 int64_t codeSize; 965 int64_t dataSize; 966 int64_t cacheSize; 967}; 968 969#if MEASURE_DEBUG 970static std::string toString(std::vector<int64_t> values) { 971 std::stringstream res; 972 res << "["; 973 for (size_t i = 0; i < values.size(); i++) { 974 res << values[i]; 975 if (i < values.size() - 1) { 976 res << ","; 977 } 978 } 979 res << "]"; 980 return res.str(); 981} 982#endif 983 984static void collectQuotaStats(const std::string& device, int32_t userId, 985 int32_t appId, struct stats* stats, struct stats* extStats) { 986 if (device.empty()) return; 987 988 struct dqblk dq; 989 990 uid_t uid = multiuser_get_uid(userId, appId); 991 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 992 reinterpret_cast<char*>(&dq)) != 0) { 993 if (errno != ESRCH) { 994 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 995 } 996 } else { 997#if MEASURE_DEBUG 998 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 999#endif 1000 stats->dataSize += dq.dqb_curspace; 1001 } 1002 1003 int cacheGid = multiuser_get_cache_gid(userId, appId); 1004 if (cacheGid != -1) { 1005 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), cacheGid, 1006 reinterpret_cast<char*>(&dq)) != 0) { 1007 if (errno != ESRCH) { 1008 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << cacheGid; 1009 } 1010 } else { 1011#if MEASURE_DEBUG 1012 LOG(DEBUG) << "quotactl() for GID " << cacheGid << " " << dq.dqb_curspace; 1013#endif 1014 stats->cacheSize += dq.dqb_curspace; 1015 } 1016 } 1017 1018 int extGid = multiuser_get_ext_gid(userId, appId); 1019 if (extGid != -1) { 1020 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), extGid, 1021 reinterpret_cast<char*>(&dq)) != 0) { 1022 if (errno != ESRCH) { 1023 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << extGid; 1024 } 1025 } else { 1026#if MEASURE_DEBUG 1027 LOG(DEBUG) << "quotactl() for GID " << extGid << " " << dq.dqb_curspace; 1028#endif 1029 extStats->dataSize += dq.dqb_curspace; 1030 } 1031 } 1032 1033 int sharedGid = multiuser_get_shared_gid(userId, appId); 1034 if (sharedGid != -1) { 1035 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), sharedGid, 1036 reinterpret_cast<char*>(&dq)) != 0) { 1037 if (errno != ESRCH) { 1038 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << sharedGid; 1039 } 1040 } else { 1041#if MEASURE_DEBUG 1042 LOG(DEBUG) << "quotactl() for GID " << sharedGid << " " << dq.dqb_curspace; 1043#endif 1044 stats->codeSize += dq.dqb_curspace; 1045 } 1046 } 1047} 1048 1049static void collectManualStats(const std::string& path, struct stats* stats) { 1050 DIR *d; 1051 int dfd; 1052 struct dirent *de; 1053 struct stat s; 1054 1055 d = opendir(path.c_str()); 1056 if (d == nullptr) { 1057 if (errno != ENOENT) { 1058 PLOG(WARNING) << "Failed to open " << path; 1059 } 1060 return; 1061 } 1062 dfd = dirfd(d); 1063 while ((de = readdir(d))) { 1064 const char *name = de->d_name; 1065 1066 int64_t size = 0; 1067 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 1068 size = s.st_blocks * 512; 1069 } 1070 1071 if (de->d_type == DT_DIR) { 1072 if (!strcmp(name, ".")) { 1073 // Don't recurse, but still count node size 1074 } else if (!strcmp(name, "..")) { 1075 // Don't recurse or count node size 1076 continue; 1077 } else { 1078 // Measure all children nodes 1079 size = 0; 1080 calculate_tree_size(StringPrintf("%s/%s", path.c_str(), name), &size); 1081 } 1082 1083 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 1084 stats->cacheSize += size; 1085 } 1086 } 1087 1088 // Legacy symlink isn't owned by app 1089 if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 1090 continue; 1091 } 1092 1093 // Everything found inside is considered data 1094 stats->dataSize += size; 1095 } 1096 closedir(d); 1097} 1098 1099static void collectManualStatsForUser(const std::string& path, struct stats* stats, 1100 bool exclude_apps = false) { 1101 DIR *d; 1102 int dfd; 1103 struct dirent *de; 1104 struct stat s; 1105 1106 d = opendir(path.c_str()); 1107 if (d == nullptr) { 1108 if (errno != ENOENT) { 1109 PLOG(WARNING) << "Failed to open " << path; 1110 } 1111 return; 1112 } 1113 dfd = dirfd(d); 1114 while ((de = readdir(d))) { 1115 if (de->d_type == DT_DIR) { 1116 const char *name = de->d_name; 1117 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) != 0) { 1118 continue; 1119 } 1120 if (!strcmp(name, ".") || !strcmp(name, "..")) { 1121 continue; 1122 } else if (exclude_apps && (s.st_uid >= AID_APP_START && s.st_uid <= AID_APP_END)) { 1123 continue; 1124 } else { 1125 collectManualStats(StringPrintf("%s/%s", path.c_str(), name), stats); 1126 } 1127 } 1128 } 1129 closedir(d); 1130} 1131 1132static void collectManualExternalStatsForUser(const std::string& path, struct stats* stats) { 1133 FTS *fts; 1134 FTSENT *p; 1135 char *argv[] = { (char*) path.c_str(), nullptr }; 1136 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1137 PLOG(ERROR) << "Failed to fts_open " << path; 1138 return; 1139 } 1140 while ((p = fts_read(fts)) != NULL) { 1141 p->fts_number = p->fts_parent->fts_number; 1142 switch (p->fts_info) { 1143 case FTS_D: 1144 if (p->fts_level == 4 1145 && !strcmp(p->fts_name, "cache") 1146 && !strcmp(p->fts_parent->fts_parent->fts_name, "data") 1147 && !strcmp(p->fts_parent->fts_parent->fts_parent->fts_name, "Android")) { 1148 p->fts_number = 1; 1149 } 1150 // Fall through to count the directory 1151 case FTS_DEFAULT: 1152 case FTS_F: 1153 case FTS_SL: 1154 case FTS_SLNONE: 1155 int64_t size = (p->fts_statp->st_blocks * 512); 1156 if (p->fts_number == 1) { 1157 stats->cacheSize += size; 1158 } 1159 stats->dataSize += size; 1160 break; 1161 } 1162 } 1163 fts_close(fts); 1164} 1165 1166binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 1167 const std::vector<std::string>& packageNames, int32_t userId, int32_t flags, 1168 int32_t appId, const std::vector<int64_t>& ceDataInodes, 1169 const std::vector<std::string>& codePaths, std::vector<int64_t>* _aidl_return) { 1170 ENFORCE_UID(AID_SYSTEM); 1171 CHECK_ARGUMENT_UUID(uuid); 1172 for (auto packageName : packageNames) { 1173 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1174 } 1175 // NOTE: Locking is relaxed on this method, since it's limited to 1176 // read-only measurements without mutation. 1177 1178 // When modifying this logic, always verify using tests: 1179 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetAppSize 1180 1181#if MEASURE_DEBUG 1182 LOG(INFO) << "Measuring user " << userId << " app " << appId; 1183#endif 1184 1185 // Here's a summary of the common storage locations across the platform, 1186 // and how they're each tagged: 1187 // 1188 // /data/app/com.example UID system 1189 // /data/app/com.example/oat UID system 1190 // /data/user/0/com.example UID u0_a10 GID u0_a10 1191 // /data/user/0/com.example/cache UID u0_a10 GID u0_a10_cache 1192 // /data/media/0/foo.txt UID u0_media_rw 1193 // /data/media/0/bar.jpg UID u0_media_rw GID u0_media_image 1194 // /data/media/0/Android/data/com.example UID u0_media_rw GID u0_a10_ext 1195 // /data/media/0/Android/data/com.example/cache UID u0_media_rw GID u0_a10_ext_cache 1196 // /data/media/obb/com.example UID system 1197 1198 struct stats stats; 1199 struct stats extStats; 1200 memset(&stats, 0, sizeof(stats)); 1201 memset(&extStats, 0, sizeof(extStats)); 1202 1203 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1204 1205 auto device = findQuotaDeviceForUuid(uuid); 1206 if (device.empty()) { 1207 flags &= ~FLAG_USE_QUOTA; 1208 } 1209 1210 ATRACE_BEGIN("obb"); 1211 for (auto packageName : packageNames) { 1212 auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str()); 1213 calculate_tree_size(obbCodePath, &extStats.codeSize); 1214 } 1215 ATRACE_END(); 1216 1217 if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) { 1218 ATRACE_BEGIN("code"); 1219 for (auto codePath : codePaths) { 1220 calculate_tree_size(codePath, &stats.codeSize, -1, 1221 multiuser_get_shared_gid(userId, appId)); 1222 } 1223 ATRACE_END(); 1224 1225 ATRACE_BEGIN("quota"); 1226 collectQuotaStats(device, userId, appId, &stats, &extStats); 1227 ATRACE_END(); 1228 1229 } else { 1230 ATRACE_BEGIN("code"); 1231 for (auto codePath : codePaths) { 1232 calculate_tree_size(codePath, &stats.codeSize); 1233 } 1234 ATRACE_END(); 1235 1236 for (size_t i = 0; i < packageNames.size(); i++) { 1237 const char* pkgname = packageNames[i].c_str(); 1238 1239 ATRACE_BEGIN("data"); 1240 auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]); 1241 collectManualStats(cePath, &stats); 1242 auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname); 1243 collectManualStats(dePath, &stats); 1244 ATRACE_END(); 1245 1246 ATRACE_BEGIN("profiles"); 1247 auto userProfilePath = create_primary_current_profile_package_dir_path(userId, pkgname); 1248 calculate_tree_size(userProfilePath, &stats.dataSize); 1249 auto refProfilePath = create_primary_reference_profile_package_dir_path(pkgname); 1250 calculate_tree_size(refProfilePath, &stats.codeSize); 1251 ATRACE_END(); 1252 1253 ATRACE_BEGIN("external"); 1254 auto extPath = create_data_media_package_path(uuid_, userId, "data", pkgname); 1255 collectManualStats(extPath, &extStats); 1256 auto mediaPath = create_data_media_package_path(uuid_, userId, "media", pkgname); 1257 calculate_tree_size(mediaPath, &extStats.dataSize); 1258 ATRACE_END(); 1259 } 1260 1261 ATRACE_BEGIN("dalvik"); 1262 int32_t sharedGid = multiuser_get_shared_gid(userId, appId); 1263 if (sharedGid != -1) { 1264 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1265 sharedGid, -1); 1266 } 1267 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, 1268 multiuser_get_uid(userId, appId), -1); 1269 ATRACE_END(); 1270 } 1271 1272 std::vector<int64_t> ret; 1273 ret.push_back(stats.codeSize); 1274 ret.push_back(stats.dataSize); 1275 ret.push_back(stats.cacheSize); 1276 ret.push_back(extStats.codeSize); 1277 ret.push_back(extStats.dataSize); 1278 ret.push_back(extStats.cacheSize); 1279#if MEASURE_DEBUG 1280 LOG(DEBUG) << "Final result " << toString(ret); 1281#endif 1282 *_aidl_return = ret; 1283 return ok(); 1284} 1285 1286binder::Status InstalldNativeService::getUserSize(const std::unique_ptr<std::string>& uuid, 1287 int32_t userId, int32_t flags, const std::vector<int32_t>& appIds, 1288 std::vector<int64_t>* _aidl_return) { 1289 ENFORCE_UID(AID_SYSTEM); 1290 CHECK_ARGUMENT_UUID(uuid); 1291 // NOTE: Locking is relaxed on this method, since it's limited to 1292 // read-only measurements without mutation. 1293 1294 // When modifying this logic, always verify using tests: 1295 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetUserSize 1296 1297#if MEASURE_DEBUG 1298 LOG(INFO) << "Measuring user " << userId; 1299#endif 1300 1301 struct stats stats; 1302 struct stats extStats; 1303 memset(&stats, 0, sizeof(stats)); 1304 memset(&extStats, 0, sizeof(extStats)); 1305 1306 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1307 1308 auto device = findQuotaDeviceForUuid(uuid); 1309 if (device.empty()) { 1310 flags &= ~FLAG_USE_QUOTA; 1311 } 1312 1313 if (flags & FLAG_USE_QUOTA) { 1314 struct dqblk dq; 1315 1316 ATRACE_BEGIN("obb"); 1317 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), AID_MEDIA_OBB, 1318 reinterpret_cast<char*>(&dq)) != 0) { 1319 if (errno != ESRCH) { 1320 PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << AID_MEDIA_OBB; 1321 } 1322 } else { 1323#if MEASURE_DEBUG 1324 LOG(DEBUG) << "quotactl() for GID " << AID_MEDIA_OBB << " " << dq.dqb_curspace; 1325#endif 1326 extStats.codeSize += dq.dqb_curspace; 1327 } 1328 ATRACE_END(); 1329 1330 ATRACE_BEGIN("code"); 1331 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true); 1332 ATRACE_END(); 1333 1334 ATRACE_BEGIN("data"); 1335 auto cePath = create_data_user_ce_path(uuid_, userId); 1336 collectManualStatsForUser(cePath, &stats, true); 1337 auto dePath = create_data_user_de_path(uuid_, userId); 1338 collectManualStatsForUser(dePath, &stats, true); 1339 ATRACE_END(); 1340 1341 ATRACE_BEGIN("profile"); 1342 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1343 calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true); 1344 auto refProfilePath = create_primary_ref_profile_dir_path(); 1345 calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true); 1346 ATRACE_END(); 1347 1348 ATRACE_BEGIN("external"); 1349 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1350 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1351 reinterpret_cast<char*>(&dq)) != 0) { 1352 if (errno != ESRCH) { 1353 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1354 } 1355 } else { 1356#if MEASURE_DEBUG 1357 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1358#endif 1359 extStats.dataSize += dq.dqb_curspace; 1360 } 1361 ATRACE_END(); 1362 1363 ATRACE_BEGIN("dalvik"); 1364 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize, 1365 -1, -1, true); 1366 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize, 1367 -1, -1, true); 1368 ATRACE_END(); 1369 1370 ATRACE_BEGIN("quota"); 1371 for (auto appId : appIds) { 1372 if (appId >= AID_APP_START) { 1373 collectQuotaStats(device, userId, appId, &stats, &extStats); 1374#if MEASURE_DEBUG 1375 // Sleep to make sure we don't lose logs 1376 usleep(1); 1377#endif 1378 } 1379 } 1380 ATRACE_END(); 1381 } else { 1382 ATRACE_BEGIN("obb"); 1383 auto obbPath = create_data_path(uuid_) + "/media/obb"; 1384 calculate_tree_size(obbPath, &extStats.codeSize); 1385 ATRACE_END(); 1386 1387 ATRACE_BEGIN("code"); 1388 calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize); 1389 ATRACE_END(); 1390 1391 ATRACE_BEGIN("data"); 1392 auto cePath = create_data_user_ce_path(uuid_, userId); 1393 collectManualStatsForUser(cePath, &stats); 1394 auto dePath = create_data_user_de_path(uuid_, userId); 1395 collectManualStatsForUser(dePath, &stats); 1396 ATRACE_END(); 1397 1398 ATRACE_BEGIN("profile"); 1399 auto userProfilePath = create_primary_cur_profile_dir_path(userId); 1400 calculate_tree_size(userProfilePath, &stats.dataSize); 1401 auto refProfilePath = create_primary_ref_profile_dir_path(); 1402 calculate_tree_size(refProfilePath, &stats.codeSize); 1403 ATRACE_END(); 1404 1405 ATRACE_BEGIN("external"); 1406 auto dataMediaPath = create_data_media_path(uuid_, userId); 1407 collectManualExternalStatsForUser(dataMediaPath, &extStats); 1408#if MEASURE_DEBUG 1409 LOG(DEBUG) << "Measured external data " << extStats.dataSize << " cache " 1410 << extStats.cacheSize; 1411#endif 1412 ATRACE_END(); 1413 1414 ATRACE_BEGIN("dalvik"); 1415 calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize); 1416 calculate_tree_size(create_primary_cur_profile_dir_path(userId), &stats.dataSize); 1417 ATRACE_END(); 1418 } 1419 1420 std::vector<int64_t> ret; 1421 ret.push_back(stats.codeSize); 1422 ret.push_back(stats.dataSize); 1423 ret.push_back(stats.cacheSize); 1424 ret.push_back(extStats.codeSize); 1425 ret.push_back(extStats.dataSize); 1426 ret.push_back(extStats.cacheSize); 1427#if MEASURE_DEBUG 1428 LOG(DEBUG) << "Final result " << toString(ret); 1429#endif 1430 *_aidl_return = ret; 1431 return ok(); 1432} 1433 1434binder::Status InstalldNativeService::getExternalSize(const std::unique_ptr<std::string>& uuid, 1435 int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return) { 1436 ENFORCE_UID(AID_SYSTEM); 1437 CHECK_ARGUMENT_UUID(uuid); 1438 // NOTE: Locking is relaxed on this method, since it's limited to 1439 // read-only measurements without mutation. 1440 1441 // When modifying this logic, always verify using tests: 1442 // runtest -x frameworks/base/services/tests/servicestests/src/com/android/server/pm/InstallerTest.java -m testGetExternalSize 1443 1444#if MEASURE_DEBUG 1445 LOG(INFO) << "Measuring external " << userId; 1446#endif 1447 1448 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1449 1450 int64_t totalSize = 0; 1451 int64_t audioSize = 0; 1452 int64_t videoSize = 0; 1453 int64_t imageSize = 0; 1454 1455 auto device = findQuotaDeviceForUuid(uuid); 1456 if (device.empty()) { 1457 flags &= ~FLAG_USE_QUOTA; 1458 } 1459 1460 if (flags & FLAG_USE_QUOTA) { 1461 struct dqblk dq; 1462 1463 uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW); 1464 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid, 1465 reinterpret_cast<char*>(&dq)) != 0) { 1466 if (errno != ESRCH) { 1467 PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid; 1468 } 1469 } else { 1470#if MEASURE_DEBUG 1471 LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace; 1472#endif 1473 totalSize = dq.dqb_curspace; 1474 } 1475 1476 gid_t audioGid = multiuser_get_uid(userId, AID_MEDIA_AUDIO); 1477 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), audioGid, 1478 reinterpret_cast<char*>(&dq)) == 0) { 1479#if MEASURE_DEBUG 1480 LOG(DEBUG) << "quotactl() for GID " << audioGid << " " << dq.dqb_curspace; 1481#endif 1482 audioSize = dq.dqb_curspace; 1483 } 1484 gid_t videoGid = multiuser_get_uid(userId, AID_MEDIA_VIDEO); 1485 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), videoGid, 1486 reinterpret_cast<char*>(&dq)) == 0) { 1487#if MEASURE_DEBUG 1488 LOG(DEBUG) << "quotactl() for GID " << videoGid << " " << dq.dqb_curspace; 1489#endif 1490 videoSize = dq.dqb_curspace; 1491 } 1492 gid_t imageGid = multiuser_get_uid(userId, AID_MEDIA_IMAGE); 1493 if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), imageGid, 1494 reinterpret_cast<char*>(&dq)) == 0) { 1495#if MEASURE_DEBUG 1496 LOG(DEBUG) << "quotactl() for GID " << imageGid << " " << dq.dqb_curspace; 1497#endif 1498 imageSize = dq.dqb_curspace; 1499 } 1500 } else { 1501 FTS *fts; 1502 FTSENT *p; 1503 auto path = create_data_media_path(uuid_, userId); 1504 char *argv[] = { (char*) path.c_str(), nullptr }; 1505 if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL))) { 1506 return error("Failed to fts_open " + path); 1507 } 1508 while ((p = fts_read(fts)) != NULL) { 1509 char* ext; 1510 int64_t size = (p->fts_statp->st_blocks * 512); 1511 switch (p->fts_info) { 1512 case FTS_F: 1513 // Only categorize files not belonging to apps 1514 if (p->fts_parent->fts_number == 0) { 1515 ext = strrchr(p->fts_name, '.'); 1516 if (ext != nullptr) { 1517 switch (MatchExtension(++ext)) { 1518 case AID_MEDIA_AUDIO: audioSize += size; break; 1519 case AID_MEDIA_VIDEO: videoSize += size; break; 1520 case AID_MEDIA_IMAGE: imageSize += size; break; 1521 } 1522 } 1523 } 1524 // Fall through to always count against total 1525 case FTS_D: 1526 // Ignore data belonging to specific apps 1527 p->fts_number = p->fts_parent->fts_number; 1528 if (p->fts_level == 1 && !strcmp(p->fts_name, "Android")) { 1529 p->fts_number = 1; 1530 } 1531 case FTS_DEFAULT: 1532 case FTS_SL: 1533 case FTS_SLNONE: 1534 totalSize += size; 1535 break; 1536 } 1537 } 1538 fts_close(fts); 1539 } 1540 1541 std::vector<int64_t> ret; 1542 ret.push_back(totalSize); 1543 ret.push_back(audioSize); 1544 ret.push_back(videoSize); 1545 ret.push_back(imageSize); 1546#if MEASURE_DEBUG 1547 LOG(DEBUG) << "Final result " << toString(ret); 1548#endif 1549 *_aidl_return = ret; 1550 return ok(); 1551} 1552 1553binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid, 1554 int32_t userId, int32_t appId, int64_t cacheQuota) { 1555 ENFORCE_UID(AID_SYSTEM); 1556 CHECK_ARGUMENT_UUID(uuid); 1557 std::lock_guard<std::recursive_mutex> lock(mCacheQuotasLock); 1558 1559 int32_t uid = multiuser_get_uid(userId, appId); 1560 mCacheQuotas[uid] = cacheQuota; 1561 1562 return ok(); 1563} 1564 1565// Dumps the contents of a profile file, using pkgname's dex files for pretty 1566// printing the result. 1567binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 1568 const std::string& codePaths, bool* _aidl_return) { 1569 ENFORCE_UID(AID_SYSTEM); 1570 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1571 std::lock_guard<std::recursive_mutex> lock(mLock); 1572 1573 const char* pkgname = packageName.c_str(); 1574 const char* code_paths = codePaths.c_str(); 1575 1576 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 1577 return ok(); 1578} 1579 1580// TODO: Consider returning error codes. 1581binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 1582 bool* _aidl_return) { 1583 ENFORCE_UID(AID_SYSTEM); 1584 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1585 std::lock_guard<std::recursive_mutex> lock(mLock); 1586 1587 *_aidl_return = analyze_primary_profiles(uid, packageName); 1588 return ok(); 1589} 1590 1591binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 1592 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 1593 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 1594 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 1595 const std::unique_ptr<std::string>& sharedLibraries) { 1596 ENFORCE_UID(AID_SYSTEM); 1597 CHECK_ARGUMENT_UUID(uuid); 1598 if (packageName && *packageName != "*") { 1599 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 1600 } 1601 std::lock_guard<std::recursive_mutex> lock(mLock); 1602 1603 const char* apk_path = apkPath.c_str(); 1604 const char* pkgname = packageName ? packageName->c_str() : "*"; 1605 const char* instruction_set = instructionSet.c_str(); 1606 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 1607 const char* compiler_filter = compilerFilter.c_str(); 1608 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 1609 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 1610 1611 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 1612 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 1613 return res ? error(res, "Failed to dexopt") : ok(); 1614} 1615 1616binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 1617 ENFORCE_UID(AID_SYSTEM); 1618 std::lock_guard<std::recursive_mutex> lock(mLock); 1619 1620 const char* instruction_set = instructionSet.c_str(); 1621 1622 char boot_marker_path[PKG_PATH_MAX]; 1623 sprintf(boot_marker_path, 1624 "%s/%s/%s/.booting", 1625 android_data_dir.path, 1626 DALVIK_CACHE, 1627 instruction_set); 1628 1629 ALOGV("mark_boot_complete : %s", boot_marker_path); 1630 if (unlink(boot_marker_path) != 0) { 1631 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 1632 } 1633 return ok(); 1634} 1635 1636void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 1637 struct stat* statbuf) 1638{ 1639 while (path[basepos] != 0) { 1640 if (path[basepos] == '/') { 1641 path[basepos] = 0; 1642 if (lstat(path, statbuf) < 0) { 1643 ALOGV("Making directory: %s\n", path); 1644 if (mkdir(path, mode) == 0) { 1645 chown(path, uid, gid); 1646 } else { 1647 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 1648 } 1649 } 1650 path[basepos] = '/'; 1651 basepos++; 1652 } 1653 basepos++; 1654 } 1655} 1656 1657binder::Status InstalldNativeService::linkNativeLibraryDirectory( 1658 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 1659 const std::string& nativeLibPath32, int32_t userId) { 1660 ENFORCE_UID(AID_SYSTEM); 1661 CHECK_ARGUMENT_UUID(uuid); 1662 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1663 std::lock_guard<std::recursive_mutex> lock(mLock); 1664 1665 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1666 const char* pkgname = packageName.c_str(); 1667 const char* asecLibDir = nativeLibPath32.c_str(); 1668 struct stat s, libStat; 1669 binder::Status res = ok(); 1670 1671 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 1672 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 1673 1674 const char* pkgdir = _pkgdir.c_str(); 1675 const char* libsymlink = _libsymlink.c_str(); 1676 1677 if (stat(pkgdir, &s) < 0) { 1678 return error("Failed to stat " + _pkgdir); 1679 } 1680 1681 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 1682 return error("Failed to chown " + _pkgdir); 1683 } 1684 1685 if (chmod(pkgdir, 0700) < 0) { 1686 res = error("Failed to chmod " + _pkgdir); 1687 goto out; 1688 } 1689 1690 if (lstat(libsymlink, &libStat) < 0) { 1691 if (errno != ENOENT) { 1692 res = error("Failed to stat " + _libsymlink); 1693 goto out; 1694 } 1695 } else { 1696 if (S_ISDIR(libStat.st_mode)) { 1697 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1698 res = error("Failed to delete " + _libsymlink); 1699 goto out; 1700 } 1701 } else if (S_ISLNK(libStat.st_mode)) { 1702 if (unlink(libsymlink) < 0) { 1703 res = error("Failed to unlink " + _libsymlink); 1704 goto out; 1705 } 1706 } 1707 } 1708 1709 if (symlink(asecLibDir, libsymlink) < 0) { 1710 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1711 goto out; 1712 } 1713 1714out: 1715 if (chmod(pkgdir, s.st_mode) < 0) { 1716 auto msg = "Failed to cleanup chmod " + _pkgdir; 1717 if (res.isOk()) { 1718 res = error(msg); 1719 } else { 1720 PLOG(ERROR) << msg; 1721 } 1722 } 1723 1724 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1725 auto msg = "Failed to cleanup chown " + _pkgdir; 1726 if (res.isOk()) { 1727 res = error(msg); 1728 } else { 1729 PLOG(ERROR) << msg; 1730 } 1731 } 1732 1733 return res; 1734} 1735 1736static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1737{ 1738 static const char *IDMAP_BIN = "/system/bin/idmap"; 1739 static const size_t MAX_INT_LEN = 32; 1740 char idmap_str[MAX_INT_LEN]; 1741 1742 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1743 1744 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1745 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1746} 1747 1748// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1749// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1750static int flatten_path(const char *prefix, const char *suffix, 1751 const char *overlay_path, char *idmap_path, size_t N) 1752{ 1753 if (overlay_path == NULL || idmap_path == NULL) { 1754 return -1; 1755 } 1756 const size_t len_overlay_path = strlen(overlay_path); 1757 // will access overlay_path + 1 further below; requires absolute path 1758 if (len_overlay_path < 2 || *overlay_path != '/') { 1759 return -1; 1760 } 1761 const size_t len_idmap_root = strlen(prefix); 1762 const size_t len_suffix = strlen(suffix); 1763 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1764 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1765 // additions below would cause overflow 1766 return -1; 1767 } 1768 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1769 return -1; 1770 } 1771 memset(idmap_path, 0, N); 1772 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1773 char *ch = idmap_path + len_idmap_root; 1774 while (*ch != '\0') { 1775 if (*ch == '/') { 1776 *ch = '@'; 1777 } 1778 ++ch; 1779 } 1780 return 0; 1781} 1782 1783binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1784 const std::string& overlayApkPath, int32_t uid) { 1785 ENFORCE_UID(AID_SYSTEM); 1786 std::lock_guard<std::recursive_mutex> lock(mLock); 1787 1788 const char* target_apk = targetApkPath.c_str(); 1789 const char* overlay_apk = overlayApkPath.c_str(); 1790 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1791 1792 int idmap_fd = -1; 1793 char idmap_path[PATH_MAX]; 1794 1795 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1796 idmap_path, sizeof(idmap_path)) == -1) { 1797 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1798 goto fail; 1799 } 1800 1801 unlink(idmap_path); 1802 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1803 if (idmap_fd < 0) { 1804 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1805 goto fail; 1806 } 1807 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1808 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1809 goto fail; 1810 } 1811 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1812 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1813 goto fail; 1814 } 1815 1816 pid_t pid; 1817 pid = fork(); 1818 if (pid == 0) { 1819 /* child -- drop privileges before continuing */ 1820 if (setgid(uid) != 0) { 1821 ALOGE("setgid(%d) failed during idmap\n", uid); 1822 exit(1); 1823 } 1824 if (setuid(uid) != 0) { 1825 ALOGE("setuid(%d) failed during idmap\n", uid); 1826 exit(1); 1827 } 1828 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1829 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1830 exit(1); 1831 } 1832 1833 run_idmap(target_apk, overlay_apk, idmap_fd); 1834 exit(1); /* only if exec call to idmap failed */ 1835 } else { 1836 int status = wait_child(pid); 1837 if (status != 0) { 1838 ALOGE("idmap failed, status=0x%04x\n", status); 1839 goto fail; 1840 } 1841 } 1842 1843 close(idmap_fd); 1844 return ok(); 1845fail: 1846 if (idmap_fd >= 0) { 1847 close(idmap_fd); 1848 unlink(idmap_path); 1849 } 1850 return error(); 1851} 1852 1853binder::Status InstalldNativeService::removeIdmap(const std::string& overlayApkPath) { 1854 const char* overlay_apk = overlayApkPath.c_str(); 1855 char idmap_path[PATH_MAX]; 1856 1857 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1858 idmap_path, sizeof(idmap_path)) == -1) { 1859 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1860 return error(); 1861 } 1862 if (unlink(idmap_path) < 0) { 1863 ALOGE("couldn't unlink idmap file %s\n", idmap_path); 1864 return error(); 1865 } 1866 return ok(); 1867} 1868 1869binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1870 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1871 const std::string& seInfo) { 1872 ENFORCE_UID(AID_SYSTEM); 1873 CHECK_ARGUMENT_UUID(uuid); 1874 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1875 std::lock_guard<std::recursive_mutex> lock(mLock); 1876 1877 binder::Status res = ok(); 1878 1879 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1880 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1881 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1882 const char* pkgName = packageName.c_str(); 1883 const char* seinfo = seInfo.c_str(); 1884 1885 uid_t uid = multiuser_get_uid(userId, appId); 1886 if (flags & FLAG_STORAGE_CE) { 1887 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1888 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1889 res = error("restorecon failed for " + path); 1890 } 1891 } 1892 if (flags & FLAG_STORAGE_DE) { 1893 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1894 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1895 res = error("restorecon failed for " + path); 1896 } 1897 } 1898 return res; 1899} 1900 1901binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1902 const std::string& instructionSet) { 1903 ENFORCE_UID(AID_SYSTEM); 1904 std::lock_guard<std::recursive_mutex> lock(mLock); 1905 1906 const char* oat_dir = oatDir.c_str(); 1907 const char* instruction_set = instructionSet.c_str(); 1908 char oat_instr_dir[PKG_PATH_MAX]; 1909 1910 if (validate_apk_path(oat_dir)) { 1911 return error("Invalid path " + oatDir); 1912 } 1913 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1914 return error("Failed to prepare " + oatDir); 1915 } 1916 if (selinux_android_restorecon(oat_dir, 0)) { 1917 return error("Failed to restorecon " + oatDir); 1918 } 1919 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1920 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1921 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1922 } 1923 return ok(); 1924} 1925 1926binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1927 ENFORCE_UID(AID_SYSTEM); 1928 std::lock_guard<std::recursive_mutex> lock(mLock); 1929 1930 if (validate_apk_path(packageDir.c_str())) { 1931 return error("Invalid path " + packageDir); 1932 } 1933 if (delete_dir_contents_and_dir(packageDir) != 0) { 1934 return error("Failed to delete " + packageDir); 1935 } 1936 return ok(); 1937} 1938 1939binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1940 const std::string& fromBase, const std::string& toBase) { 1941 ENFORCE_UID(AID_SYSTEM); 1942 std::lock_guard<std::recursive_mutex> lock(mLock); 1943 1944 const char* relative_path = relativePath.c_str(); 1945 const char* from_base = fromBase.c_str(); 1946 const char* to_base = toBase.c_str(); 1947 char from_path[PKG_PATH_MAX]; 1948 char to_path[PKG_PATH_MAX]; 1949 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1950 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1951 1952 if (validate_apk_path_subdirs(from_path)) { 1953 return error(StringPrintf("Invalid from path %s", from_path)); 1954 } 1955 1956 if (validate_apk_path_subdirs(to_path)) { 1957 return error(StringPrintf("Invalid to path %s", to_path)); 1958 } 1959 1960 if (link(from_path, to_path) < 0) { 1961 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1962 } 1963 1964 return ok(); 1965} 1966 1967binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1968 const std::string& instructionSet, const std::string& outputPath) { 1969 ENFORCE_UID(AID_SYSTEM); 1970 std::lock_guard<std::recursive_mutex> lock(mLock); 1971 1972 const char* apk_path = apkPath.c_str(); 1973 const char* instruction_set = instructionSet.c_str(); 1974 const char* oat_dir = outputPath.c_str(); 1975 1976 bool success = move_ab(apk_path, instruction_set, oat_dir); 1977 return success ? ok() : error(); 1978} 1979 1980binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1981 const std::string& instructionSet, const std::string& outputPath) { 1982 ENFORCE_UID(AID_SYSTEM); 1983 std::lock_guard<std::recursive_mutex> lock(mLock); 1984 1985 const char* apk_path = apkPath.c_str(); 1986 const char* instruction_set = instructionSet.c_str(); 1987 const char* oat_dir = outputPath.c_str(); 1988 1989 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1990 return res ? ok() : error(); 1991} 1992 1993binder::Status InstalldNativeService::reconcileSecondaryDexFile( 1994 const std::string& dexPath, const std::string& packageName, int32_t uid, 1995 const std::vector<std::string>& isas, const std::unique_ptr<std::string>& volumeUuid, 1996 int32_t storage_flag, bool* _aidl_return) { 1997 ENFORCE_UID(AID_SYSTEM); 1998 CHECK_ARGUMENT_UUID(volumeUuid); 1999 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 2000 2001 std::lock_guard<std::recursive_mutex> lock(mLock); 2002 bool result = android::installd::reconcile_secondary_dex_file( 2003 dexPath, packageName, uid, isas, volumeUuid, storage_flag, _aidl_return); 2004 return result ? ok() : error(); 2005} 2006 2007binder::Status InstalldNativeService::invalidateMounts() { 2008 ENFORCE_UID(AID_SYSTEM); 2009 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 2010 2011 mQuotaDevices.clear(); 2012 2013 std::ifstream in("/proc/mounts"); 2014 if (!in.is_open()) { 2015 return error("Failed to read mounts"); 2016 } 2017 2018 std::string source; 2019 std::string target; 2020 std::string ignored; 2021 struct dqblk dq; 2022 while (!in.eof()) { 2023 std::getline(in, source, ' '); 2024 std::getline(in, target, ' '); 2025 std::getline(in, ignored); 2026 2027 if (source.compare(0, 11, "/dev/block/") == 0) { 2028 if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0, 2029 reinterpret_cast<char*>(&dq)) == 0) { 2030 LOG(DEBUG) << "Found " << source << " with quota"; 2031 mQuotaDevices[target] = source; 2032 } 2033 } 2034 } 2035 return ok(); 2036} 2037 2038std::string InstalldNativeService::findQuotaDeviceForUuid( 2039 const std::unique_ptr<std::string>& uuid) { 2040 std::lock_guard<std::recursive_mutex> lock(mQuotaDevicesLock); 2041 auto path = create_data_path(uuid ? uuid->c_str() : nullptr); 2042 return mQuotaDevices[path]; 2043} 2044 2045binder::Status InstalldNativeService::isQuotaSupported( 2046 const std::unique_ptr<std::string>& volumeUuid, bool* _aidl_return) { 2047 *_aidl_return = !findQuotaDeviceForUuid(volumeUuid).empty(); 2048 return ok(); 2049} 2050 2051} // namespace installd 2052} // namespace android 2053