InstalldNativeService.cpp revision f4237c11d2daa4fdce728dc607b70563bdb8d7bb
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#include <errno.h> 20#include <inttypes.h> 21#include <regex> 22#include <stdlib.h> 23#include <sys/capability.h> 24#include <sys/file.h> 25#include <sys/resource.h> 26#include <sys/stat.h> 27#include <sys/types.h> 28#include <sys/wait.h> 29#include <sys/xattr.h> 30#include <unistd.h> 31 32#include <android-base/logging.h> 33#include <android-base/stringprintf.h> 34#include <android-base/strings.h> 35#include <android-base/unique_fd.h> 36#include <cutils/fs.h> 37#include <cutils/log.h> // TODO: Move everything to base/logging. 38#include <cutils/properties.h> 39#include <cutils/sched_policy.h> 40#include <diskusage/dirsize.h> 41#include <logwrap/logwrap.h> 42#include <private/android_filesystem_config.h> 43#include <selinux/android.h> 44#include <system/thread_defs.h> 45 46#include "dexopt.h" 47#include "globals.h" 48#include "installd_deps.h" 49#include "otapreopt_utils.h" 50#include "utils.h" 51 52#ifndef LOG_TAG 53#define LOG_TAG "installd" 54#endif 55 56using android::base::StringPrintf; 57 58namespace android { 59namespace installd { 60 61static constexpr const char* kCpPath = "/system/bin/cp"; 62static constexpr const char* kXattrDefault = "user.default"; 63 64static constexpr const int MIN_RESTRICTED_HOME_SDK_VERSION = 24; // > M 65 66static constexpr const char* PKG_LIB_POSTFIX = "/lib"; 67static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 68static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 69 70static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 71static constexpr const char* IDMAP_SUFFIX = "@idmap"; 72 73// NOTE: keep in sync with StorageManager 74static constexpr int FLAG_STORAGE_DE = 1 << 0; 75static constexpr int FLAG_STORAGE_CE = 1 << 1; 76 77// NOTE: keep in sync with Installer 78static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 79static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 80 81 82namespace { 83 84constexpr const char* kDump = "android.permission.DUMP"; 85 86static binder::Status ok() { 87 return binder::Status::ok(); 88} 89 90static binder::Status exception(uint32_t code, const std::string& msg) { 91 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 92} 93 94static binder::Status error() { 95 return binder::Status::fromServiceSpecificError(errno); 96} 97 98static binder::Status error(const std::string& msg) { 99 PLOG(ERROR) << msg; 100 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 101} 102 103static binder::Status error(uint32_t code, const std::string& msg) { 104 LOG(ERROR) << msg << " (" << code << ")"; 105 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 106} 107 108binder::Status checkPermission(const char* permission) { 109 pid_t pid; 110 uid_t uid; 111 112 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 113 reinterpret_cast<int32_t*>(&uid))) { 114 return ok(); 115 } else { 116 return exception(binder::Status::EX_SECURITY, 117 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 118 } 119} 120 121binder::Status checkUid(uid_t expectedUid) { 122 uid_t uid = IPCThreadState::self()->getCallingUid(); 123 if (uid == expectedUid || uid == AID_ROOT) { 124 return ok(); 125 } else { 126 return exception(binder::Status::EX_SECURITY, 127 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 128 } 129} 130 131binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 132 if (!uuid || is_valid_filename(*uuid)) { 133 return ok(); 134 } else { 135 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 136 StringPrintf("UUID %s is malformed", uuid->c_str())); 137 } 138} 139 140binder::Status checkArgumentPackageName(const std::string& packageName) { 141 if (is_valid_package_name(packageName.c_str())) { 142 return ok(); 143 } else { 144 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 145 StringPrintf("Package name %s is malformed", packageName.c_str())); 146 } 147} 148 149#define ENFORCE_UID(uid) { \ 150 binder::Status status = checkUid((uid)); \ 151 if (!status.isOk()) { \ 152 return status; \ 153 } \ 154} 155 156#define CHECK_ARGUMENT_UUID(uuid) { \ 157 binder::Status status = checkArgumentUuid((uuid)); \ 158 if (!status.isOk()) { \ 159 return status; \ 160 } \ 161} 162 163#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 164 binder::Status status = \ 165 checkArgumentPackageName((packageName)); \ 166 if (!status.isOk()) { \ 167 return status; \ 168 } \ 169} 170 171} // namespace 172 173status_t InstalldNativeService::start() { 174 IPCThreadState::self()->disableBackgroundScheduling(true); 175 status_t ret = BinderService<InstalldNativeService>::publish(); 176 if (ret != android::OK) { 177 return ret; 178 } 179 sp<ProcessState> ps(ProcessState::self()); 180 ps->startThreadPool(); 181 ps->giveThreadPoolName(); 182 return android::OK; 183} 184 185status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 186 const binder::Status dump_permission = checkPermission(kDump); 187 if (!dump_permission.isOk()) { 188 const String8 msg(dump_permission.toString8()); 189 write(fd, msg.string(), msg.size()); 190 return PERMISSION_DENIED; 191 } 192 193 std::string msg = "installd is happy\n"; 194 write(fd, msg.c_str(), strlen(msg.c_str())); 195 return NO_ERROR; 196} 197 198/** 199 * Perform restorecon of the given path, but only perform recursive restorecon 200 * if the label of that top-level file actually changed. This can save us 201 * significant time by avoiding no-op traversals of large filesystem trees. 202 */ 203static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid) { 204 int res = 0; 205 char* before = nullptr; 206 char* after = nullptr; 207 208 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 209 // libselinux. Not needed here. 210 211 if (lgetfilecon(path.c_str(), &before) < 0) { 212 PLOG(ERROR) << "Failed before getfilecon for " << path; 213 goto fail; 214 } 215 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 216 PLOG(ERROR) << "Failed top-level restorecon for " << path; 217 goto fail; 218 } 219 if (lgetfilecon(path.c_str(), &after) < 0) { 220 PLOG(ERROR) << "Failed after getfilecon for " << path; 221 goto fail; 222 } 223 224 // If the initial top-level restorecon above changed the label, then go 225 // back and restorecon everything recursively 226 if (strcmp(before, after)) { 227 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " << path 228 << "; running recursive restorecon"; 229 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 230 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 231 PLOG(ERROR) << "Failed recursive restorecon for " << path; 232 goto fail; 233 } 234 } 235 236 goto done; 237fail: 238 res = -1; 239done: 240 free(before); 241 free(after); 242 return res; 243} 244 245static int restorecon_app_data_lazy(const std::string& parent, const char* name, 246 const std::string& seInfo, uid_t uid) { 247 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid); 248} 249 250static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 251 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 252 PLOG(ERROR) << "Failed to prepare " << path; 253 return -1; 254 } 255 return 0; 256} 257 258static int prepare_app_dir(const std::string& parent, const char* name, mode_t target_mode, 259 uid_t uid) { 260 return prepare_app_dir(StringPrintf("%s/%s", parent.c_str(), name), target_mode, uid); 261} 262 263binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 264 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 265 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 266 ENFORCE_UID(AID_SYSTEM); 267 CHECK_ARGUMENT_UUID(uuid); 268 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 269 270 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 271 const char* pkgname = packageName.c_str(); 272 273 // Assume invalid inode unless filled in below 274 if (_aidl_return != nullptr) *_aidl_return = -1; 275 276 uid_t uid = multiuser_get_uid(userId, appId); 277 mode_t target_mode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 278 if (flags & FLAG_STORAGE_CE) { 279 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 280 if (prepare_app_dir(path, target_mode, uid) || 281 prepare_app_dir(path, "cache", 0771, uid) || 282 prepare_app_dir(path, "code_cache", 0771, uid)) { 283 return error("Failed to prepare " + path); 284 } 285 286 // Consider restorecon over contents if label changed 287 if (restorecon_app_data_lazy(path, seInfo, uid) || 288 restorecon_app_data_lazy(path, "cache", seInfo, uid) || 289 restorecon_app_data_lazy(path, "code_cache", seInfo, uid)) { 290 return error("Failed to restorecon " + path); 291 } 292 293 // Remember inode numbers of cache directories so that we can clear 294 // contents while CE storage is locked 295 if (write_path_inode(path, "cache", kXattrInodeCache) || 296 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 297 return error("Failed to write_path_inode for " + path); 298 } 299 300 // And return the CE inode of the top-level data directory so we can 301 // clear contents while CE storage is locked 302 if ((_aidl_return != nullptr) 303 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 304 return error("Failed to get_path_inode for " + path); 305 } 306 } 307 if (flags & FLAG_STORAGE_DE) { 308 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 309 if (prepare_app_dir(path, target_mode, uid)) { 310 return error("Failed to prepare " + path); 311 } 312 313 // Consider restorecon over contents if label changed 314 if (restorecon_app_data_lazy(path, seInfo, uid)) { 315 return error("Failed to restorecon " + path); 316 } 317 318 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 319 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 320 // read-write-execute only for the app user. 321 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 322 return error("Failed to prepare " + profile_path); 323 } 324 std::string profile_file = create_primary_profile(profile_path); 325 // read-write only for the app user. 326 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 327 return error("Failed to prepare " + profile_path); 328 } 329 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 330 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 331 // profiles. 332 int shared_app_gid = multiuser_get_shared_app_gid(uid); 333 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 334 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 335 return error("Failed to prepare " + ref_profile_path); 336 } 337 } 338 } 339 return ok(); 340} 341 342binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 343 const std::string& packageName, int32_t userId, int32_t flags) { 344 ENFORCE_UID(AID_SYSTEM); 345 CHECK_ARGUMENT_UUID(uuid); 346 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 347 348 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 349 const char* pkgname = packageName.c_str(); 350 351 // This method only exists to upgrade system apps that have requested 352 // forceDeviceEncrypted, so their default storage always lives in a 353 // consistent location. This only works on non-FBE devices, since we 354 // never want to risk exposing data on a device with real CE/DE storage. 355 356 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 357 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 358 359 // If neither directory is marked as default, assume CE is default 360 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 361 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 362 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 363 return error("Failed to mark default storage " + ce_path); 364 } 365 } 366 367 // Migrate default data location if needed 368 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 369 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 370 371 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 372 LOG(WARNING) << "Requested default storage " << target 373 << " is not active; migrating from " << source; 374 if (delete_dir_contents_and_dir(target) != 0) { 375 return error("Failed to delete " + target); 376 } 377 if (rename(source.c_str(), target.c_str()) != 0) { 378 return error("Failed to rename " + source + " to " + target); 379 } 380 } 381 382 return ok(); 383} 384 385 386binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 387 ENFORCE_UID(AID_SYSTEM); 388 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 389 390 const char* pkgname = packageName.c_str(); 391 binder::Status res = ok(); 392 if (!clear_reference_profile(pkgname)) { 393 res = error("Failed to clear reference profile for " + packageName); 394 } 395 if (!clear_current_profiles(pkgname)) { 396 res = error("Failed to clear current profiles for " + packageName); 397 } 398 return res; 399} 400 401binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 402 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 403 ENFORCE_UID(AID_SYSTEM); 404 CHECK_ARGUMENT_UUID(uuid); 405 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 406 407 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 408 const char* pkgname = packageName.c_str(); 409 410 binder::Status res = ok(); 411 if (flags & FLAG_STORAGE_CE) { 412 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 413 if (flags & FLAG_CLEAR_CACHE_ONLY) { 414 path = read_path_inode(path, "cache", kXattrInodeCache); 415 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 416 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 417 } 418 if (access(path.c_str(), F_OK) == 0) { 419 if (delete_dir_contents(path) != 0) { 420 res = error("Failed to delete contents of " + path); 421 } 422 } 423 } 424 if (flags & FLAG_STORAGE_DE) { 425 std::string suffix = ""; 426 bool only_cache = false; 427 if (flags & FLAG_CLEAR_CACHE_ONLY) { 428 suffix = CACHE_DIR_POSTFIX; 429 only_cache = true; 430 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 431 suffix = CODE_CACHE_DIR_POSTFIX; 432 only_cache = true; 433 } 434 435 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 436 if (access(path.c_str(), F_OK) == 0) { 437 if (delete_dir_contents(path) != 0) { 438 res = error("Failed to delete contents of " + path); 439 } 440 } 441 if (!only_cache) { 442 if (!clear_current_profile(pkgname, userId)) { 443 res = error("Failed to clear current profile for " + packageName); 444 } 445 } 446 } 447 return res; 448} 449 450static int destroy_app_reference_profile(const char *pkgname) { 451 return delete_dir_contents_and_dir( 452 create_data_ref_profile_package_path(pkgname), 453 /*ignore_if_missing*/ true); 454} 455 456static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 457 return delete_dir_contents_and_dir( 458 create_data_user_profile_package_path(userid, pkgname), 459 /*ignore_if_missing*/ true); 460} 461 462binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 463 ENFORCE_UID(AID_SYSTEM); 464 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 465 466 const char* pkgname = packageName.c_str(); 467 binder::Status res = ok(); 468 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 469 for (auto user : users) { 470 if (destroy_app_current_profiles(pkgname, user) != 0) { 471 res = error("Failed to destroy current profiles for " + packageName); 472 } 473 } 474 if (destroy_app_reference_profile(pkgname) != 0) { 475 res = error("Failed to destroy reference profile for " + packageName); 476 } 477 return res; 478} 479 480binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 481 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 482 ENFORCE_UID(AID_SYSTEM); 483 CHECK_ARGUMENT_UUID(uuid); 484 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 485 486 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 487 const char* pkgname = packageName.c_str(); 488 489 binder::Status res = ok(); 490 if (flags & FLAG_STORAGE_CE) { 491 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 492 if (delete_dir_contents_and_dir(path) != 0) { 493 res = error("Failed to delete " + path); 494 } 495 } 496 if (flags & FLAG_STORAGE_DE) { 497 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 498 if (delete_dir_contents_and_dir(path) != 0) { 499 res = error("Failed to delete " + path); 500 } 501 destroy_app_current_profiles(pkgname, userId); 502 // TODO(calin): If the package is still installed by other users it's probably 503 // beneficial to keep the reference profile around. 504 // Verify if it's ok to do that. 505 destroy_app_reference_profile(pkgname); 506 } 507 return res; 508} 509 510binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 511 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 512 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 513 int32_t targetSdkVersion) { 514 ENFORCE_UID(AID_SYSTEM); 515 CHECK_ARGUMENT_UUID(fromUuid); 516 CHECK_ARGUMENT_UUID(toUuid); 517 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 518 519 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 520 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 521 const char* package_name = packageName.c_str(); 522 const char* data_app_name = dataAppName.c_str(); 523 524 binder::Status res = ok(); 525 std::vector<userid_t> users = get_known_users(from_uuid); 526 527 // Copy app 528 { 529 auto from = create_data_app_package_path(from_uuid, data_app_name); 530 auto to = create_data_app_package_path(to_uuid, data_app_name); 531 auto to_parent = create_data_app_path(to_uuid); 532 533 char *argv[] = { 534 (char*) kCpPath, 535 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 536 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 537 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 538 (char*) "-P", /* Do not follow symlinks [default] */ 539 (char*) "-d", /* don't dereference symlinks */ 540 (char*) from.c_str(), 541 (char*) to_parent.c_str() 542 }; 543 544 LOG(DEBUG) << "Copying " << from << " to " << to; 545 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 546 if (rc != 0) { 547 res = error(rc, "Failed copying " + from + " to " + to); 548 goto fail; 549 } 550 551 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 552 res = error("Failed to restorecon " + to); 553 goto fail; 554 } 555 } 556 557 // Copy private data for all known users 558 for (auto user : users) { 559 560 // Data source may not exist for all users; that's okay 561 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 562 if (access(from_ce.c_str(), F_OK) != 0) { 563 LOG(INFO) << "Missing source " << from_ce; 564 continue; 565 } 566 567 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 568 seInfo, targetSdkVersion, nullptr).isOk()) { 569 res = error("Failed to create package target"); 570 goto fail; 571 } 572 573 char *argv[] = { 574 (char*) kCpPath, 575 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 576 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 577 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 578 (char*) "-P", /* Do not follow symlinks [default] */ 579 (char*) "-d", /* don't dereference symlinks */ 580 nullptr, 581 nullptr 582 }; 583 584 { 585 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 586 auto to = create_data_user_de_path(to_uuid, user); 587 argv[6] = (char*) from.c_str(); 588 argv[7] = (char*) to.c_str(); 589 590 LOG(DEBUG) << "Copying " << from << " to " << to; 591 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 592 if (rc != 0) { 593 res = error(rc, "Failed copying " + from + " to " + to); 594 goto fail; 595 } 596 } 597 { 598 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 599 auto to = create_data_user_ce_path(to_uuid, user); 600 argv[6] = (char*) from.c_str(); 601 argv[7] = (char*) to.c_str(); 602 603 LOG(DEBUG) << "Copying " << from << " to " << to; 604 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 605 if (rc != 0) { 606 res = error(rc, "Failed copying " + from + " to " + to); 607 goto fail; 608 } 609 } 610 611 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 612 appId, seInfo).isOk()) { 613 res = error("Failed to restorecon"); 614 goto fail; 615 } 616 } 617 618 // We let the framework scan the new location and persist that before 619 // deleting the data in the old location; this ordering ensures that 620 // we can recover from things like battery pulls. 621 return ok(); 622 623fail: 624 // Nuke everything we might have already copied 625 { 626 auto to = create_data_app_package_path(to_uuid, data_app_name); 627 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 628 LOG(WARNING) << "Failed to rollback " << to; 629 } 630 } 631 for (auto user : users) { 632 { 633 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 634 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 635 LOG(WARNING) << "Failed to rollback " << to; 636 } 637 } 638 { 639 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 640 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 641 LOG(WARNING) << "Failed to rollback " << to; 642 } 643 } 644 } 645 return res; 646} 647 648binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 649 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 650 ENFORCE_UID(AID_SYSTEM); 651 CHECK_ARGUMENT_UUID(uuid); 652 653 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 654 if (flags & FLAG_STORAGE_DE) { 655 if (uuid_ == nullptr) { 656 if (ensure_config_user_dirs(userId) != 0) { 657 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 658 } 659 } 660 } 661 return ok(); 662} 663 664binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 665 int32_t userId, int32_t flags) { 666 ENFORCE_UID(AID_SYSTEM); 667 CHECK_ARGUMENT_UUID(uuid); 668 669 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 670 binder::Status res = ok(); 671 if (flags & FLAG_STORAGE_DE) { 672 auto path = create_data_user_de_path(uuid_, userId); 673 if (delete_dir_contents_and_dir(path, true) != 0) { 674 res = error("Failed to delete " + path); 675 } 676 if (uuid_ == nullptr) { 677 path = create_data_misc_legacy_path(userId); 678 if (delete_dir_contents_and_dir(path, true) != 0) { 679 res = error("Failed to delete " + path); 680 } 681 path = create_data_user_profiles_path(userId); 682 if (delete_dir_contents_and_dir(path, true) != 0) { 683 res = error("Failed to delete " + path); 684 } 685 } 686 } 687 if (flags & FLAG_STORAGE_CE) { 688 auto path = create_data_user_ce_path(uuid_, userId); 689 if (delete_dir_contents_and_dir(path, true) != 0) { 690 res = error("Failed to delete " + path); 691 } 692 path = create_data_media_path(uuid_, userId); 693 if (delete_dir_contents_and_dir(path, true) != 0) { 694 res = error("Failed to delete " + path); 695 } 696 } 697 return res; 698} 699 700/* Try to ensure free_size bytes of storage are available. 701 * Returns 0 on success. 702 * This is rather simple-minded because doing a full LRU would 703 * be potentially memory-intensive, and without atime it would 704 * also require that apps constantly modify file metadata even 705 * when just reading from the cache, which is pretty awful. 706 */ 707binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 708 int64_t freeStorageSize) { 709 ENFORCE_UID(AID_SYSTEM); 710 CHECK_ARGUMENT_UUID(uuid); 711 712 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 713 cache_t* cache; 714 int64_t avail; 715 716 auto data_path = create_data_path(uuid_); 717 718 avail = data_disk_free(data_path); 719 if (avail < 0) { 720 return error("Failed to determine free space for " + data_path); 721 } 722 723 ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail); 724 if (avail >= freeStorageSize) { 725 return ok(); 726 } 727 728 cache = start_cache_collection(); 729 730 auto users = get_known_users(uuid_); 731 for (auto user : users) { 732 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 733 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 734 add_cache_files(cache, 735 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 736 } 737 738 clear_cache_files(data_path, cache, freeStorageSize); 739 finish_cache_collection(cache); 740 741 avail = data_disk_free(data_path); 742 if (avail >= freeStorageSize) { 743 return ok(); 744 } else { 745 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 746 freeStorageSize, data_path.c_str(), avail)); 747 } 748} 749 750binder::Status InstalldNativeService::rmdex(const std::string& codePath, 751 const std::string& instructionSet) { 752 ENFORCE_UID(AID_SYSTEM); 753 char dex_path[PKG_PATH_MAX]; 754 755 const char* path = codePath.c_str(); 756 const char* instruction_set = instructionSet.c_str(); 757 758 if (validate_apk_path(path) && validate_system_app_path(path)) { 759 return error("Invalid path " + codePath); 760 } 761 762 if (!create_cache_path(dex_path, path, instruction_set)) { 763 return error("Failed to create cache path for " + codePath); 764 } 765 766 ALOGV("unlink %s\n", dex_path); 767 if (unlink(dex_path) < 0) { 768 return error(StringPrintf("Failed to unlink %s", dex_path)); 769 } else { 770 return ok(); 771 } 772} 773 774static void add_app_data_size(std::string& path, int64_t *codesize, int64_t *datasize, 775 int64_t *cachesize) { 776 DIR *d; 777 int dfd; 778 struct dirent *de; 779 struct stat s; 780 781 d = opendir(path.c_str()); 782 if (d == nullptr) { 783 PLOG(WARNING) << "Failed to open " << path; 784 return; 785 } 786 dfd = dirfd(d); 787 while ((de = readdir(d))) { 788 const char *name = de->d_name; 789 790 int64_t statsize = 0; 791 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 792 statsize = stat_size(&s); 793 } 794 795 if (de->d_type == DT_DIR) { 796 int subfd; 797 int64_t dirsize = 0; 798 /* always skip "." and ".." */ 799 if (name[0] == '.') { 800 if (name[1] == 0) continue; 801 if ((name[1] == '.') && (name[2] == 0)) continue; 802 } 803 subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 804 if (subfd >= 0) { 805 dirsize = calculate_dir_size(subfd); 806 close(subfd); 807 } 808 // TODO: check xattrs! 809 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 810 *datasize += statsize; 811 *cachesize += dirsize; 812 } else { 813 *datasize += dirsize + statsize; 814 } 815 } else if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 816 *codesize += statsize; 817 } else { 818 *datasize += statsize; 819 } 820 } 821 closedir(d); 822} 823 824binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 825 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode, 826 const std::string& codePath, std::vector<int64_t>* _aidl_return) { 827 ENFORCE_UID(AID_SYSTEM); 828 CHECK_ARGUMENT_UUID(uuid); 829 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 830 831 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 832 const char* pkgname = packageName.c_str(); 833 const char* code_path = codePath.c_str(); 834 835 DIR *d; 836 int dfd; 837 int64_t codesize = 0; 838 int64_t datasize = 0; 839 int64_t cachesize = 0; 840 int64_t asecsize = 0; 841 842 d = opendir(code_path); 843 if (d != nullptr) { 844 dfd = dirfd(d); 845 codesize += calculate_dir_size(dfd); 846 closedir(d); 847 } 848 849 if (flags & FLAG_STORAGE_CE) { 850 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 851 add_app_data_size(path, &codesize, &datasize, &cachesize); 852 } 853 if (flags & FLAG_STORAGE_DE) { 854 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 855 add_app_data_size(path, &codesize, &datasize, &cachesize); 856 } 857 858 std::vector<int64_t> res; 859 res.push_back(codesize); 860 res.push_back(datasize); 861 res.push_back(cachesize); 862 res.push_back(asecsize); 863 *_aidl_return = res; 864 return ok(); 865} 866 867// Dumps the contents of a profile file, using pkgname's dex files for pretty 868// printing the result. 869binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 870 const std::string& codePaths, bool* _aidl_return) { 871 ENFORCE_UID(AID_SYSTEM); 872 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 873 874 const char* pkgname = packageName.c_str(); 875 const char* code_paths = codePaths.c_str(); 876 877 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 878 return ok(); 879} 880 881// TODO: Consider returning error codes. 882binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 883 bool* _aidl_return) { 884 ENFORCE_UID(AID_SYSTEM); 885 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 886 887 const char* pkgname = packageName.c_str(); 888 *_aidl_return = analyse_profiles(uid, pkgname); 889 return ok(); 890} 891 892binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 893 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 894 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 895 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 896 const std::unique_ptr<std::string>& sharedLibraries) { 897 ENFORCE_UID(AID_SYSTEM); 898 CHECK_ARGUMENT_UUID(uuid); 899 if (packageName && *packageName != "*") { 900 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 901 } 902 903 const char* apk_path = apkPath.c_str(); 904 const char* pkgname = packageName ? packageName->c_str() : "*"; 905 const char* instruction_set = instructionSet.c_str(); 906 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 907 const char* compiler_filter = compilerFilter.c_str(); 908 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 909 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 910 911 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 912 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 913 return res ? error(res, "Failed to dexopt") : ok(); 914} 915 916binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 917 ENFORCE_UID(AID_SYSTEM); 918 const char* instruction_set = instructionSet.c_str(); 919 920 char boot_marker_path[PKG_PATH_MAX]; 921 sprintf(boot_marker_path, 922 "%s/%s/%s/.booting", 923 android_data_dir.path, 924 DALVIK_CACHE, 925 instruction_set); 926 927 ALOGV("mark_boot_complete : %s", boot_marker_path); 928 if (unlink(boot_marker_path) != 0) { 929 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 930 } 931 return ok(); 932} 933 934void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 935 struct stat* statbuf) 936{ 937 while (path[basepos] != 0) { 938 if (path[basepos] == '/') { 939 path[basepos] = 0; 940 if (lstat(path, statbuf) < 0) { 941 ALOGV("Making directory: %s\n", path); 942 if (mkdir(path, mode) == 0) { 943 chown(path, uid, gid); 944 } else { 945 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 946 } 947 } 948 path[basepos] = '/'; 949 basepos++; 950 } 951 basepos++; 952 } 953} 954 955binder::Status InstalldNativeService::linkNativeLibraryDirectory( 956 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 957 const std::string& nativeLibPath32, int32_t userId) { 958 ENFORCE_UID(AID_SYSTEM); 959 CHECK_ARGUMENT_UUID(uuid); 960 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 961 962 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 963 const char* pkgname = packageName.c_str(); 964 const char* asecLibDir = nativeLibPath32.c_str(); 965 struct stat s, libStat; 966 binder::Status res = ok(); 967 968 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 969 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 970 971 const char* pkgdir = _pkgdir.c_str(); 972 const char* libsymlink = _libsymlink.c_str(); 973 974 if (stat(pkgdir, &s) < 0) { 975 return error("Failed to stat " + _pkgdir); 976 } 977 978 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 979 return error("Failed to chown " + _pkgdir); 980 } 981 982 if (chmod(pkgdir, 0700) < 0) { 983 res = error("Failed to chmod " + _pkgdir); 984 goto out; 985 } 986 987 if (lstat(libsymlink, &libStat) < 0) { 988 if (errno != ENOENT) { 989 res = error("Failed to stat " + _libsymlink); 990 goto out; 991 } 992 } else { 993 if (S_ISDIR(libStat.st_mode)) { 994 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 995 res = error("Failed to delete " + _libsymlink); 996 goto out; 997 } 998 } else if (S_ISLNK(libStat.st_mode)) { 999 if (unlink(libsymlink) < 0) { 1000 res = error("Failed to unlink " + _libsymlink); 1001 goto out; 1002 } 1003 } 1004 } 1005 1006 if (symlink(asecLibDir, libsymlink) < 0) { 1007 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1008 goto out; 1009 } 1010 1011out: 1012 if (chmod(pkgdir, s.st_mode) < 0) { 1013 auto msg = "Failed to cleanup chmod " + _pkgdir; 1014 if (res.isOk()) { 1015 res = error(msg); 1016 } else { 1017 PLOG(ERROR) << msg; 1018 } 1019 } 1020 1021 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1022 auto msg = "Failed to cleanup chown " + _pkgdir; 1023 if (res.isOk()) { 1024 res = error(msg); 1025 } else { 1026 PLOG(ERROR) << msg; 1027 } 1028 } 1029 1030 return res; 1031} 1032 1033static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1034{ 1035 static const char *IDMAP_BIN = "/system/bin/idmap"; 1036 static const size_t MAX_INT_LEN = 32; 1037 char idmap_str[MAX_INT_LEN]; 1038 1039 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1040 1041 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1042 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1043} 1044 1045// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1046// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1047static int flatten_path(const char *prefix, const char *suffix, 1048 const char *overlay_path, char *idmap_path, size_t N) 1049{ 1050 if (overlay_path == NULL || idmap_path == NULL) { 1051 return -1; 1052 } 1053 const size_t len_overlay_path = strlen(overlay_path); 1054 // will access overlay_path + 1 further below; requires absolute path 1055 if (len_overlay_path < 2 || *overlay_path != '/') { 1056 return -1; 1057 } 1058 const size_t len_idmap_root = strlen(prefix); 1059 const size_t len_suffix = strlen(suffix); 1060 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1061 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1062 // additions below would cause overflow 1063 return -1; 1064 } 1065 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1066 return -1; 1067 } 1068 memset(idmap_path, 0, N); 1069 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1070 char *ch = idmap_path + len_idmap_root; 1071 while (*ch != '\0') { 1072 if (*ch == '/') { 1073 *ch = '@'; 1074 } 1075 ++ch; 1076 } 1077 return 0; 1078} 1079 1080binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1081 const std::string& overlayApkPath, int32_t uid) { 1082 ENFORCE_UID(AID_SYSTEM); 1083 const char* target_apk = targetApkPath.c_str(); 1084 const char* overlay_apk = overlayApkPath.c_str(); 1085 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1086 1087 int idmap_fd = -1; 1088 char idmap_path[PATH_MAX]; 1089 1090 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1091 idmap_path, sizeof(idmap_path)) == -1) { 1092 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1093 goto fail; 1094 } 1095 1096 unlink(idmap_path); 1097 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1098 if (idmap_fd < 0) { 1099 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1100 goto fail; 1101 } 1102 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1103 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1104 goto fail; 1105 } 1106 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1107 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1108 goto fail; 1109 } 1110 1111 pid_t pid; 1112 pid = fork(); 1113 if (pid == 0) { 1114 /* child -- drop privileges before continuing */ 1115 if (setgid(uid) != 0) { 1116 ALOGE("setgid(%d) failed during idmap\n", uid); 1117 exit(1); 1118 } 1119 if (setuid(uid) != 0) { 1120 ALOGE("setuid(%d) failed during idmap\n", uid); 1121 exit(1); 1122 } 1123 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1124 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1125 exit(1); 1126 } 1127 1128 run_idmap(target_apk, overlay_apk, idmap_fd); 1129 exit(1); /* only if exec call to idmap failed */ 1130 } else { 1131 int status = wait_child(pid); 1132 if (status != 0) { 1133 ALOGE("idmap failed, status=0x%04x\n", status); 1134 goto fail; 1135 } 1136 } 1137 1138 close(idmap_fd); 1139 return ok(); 1140fail: 1141 if (idmap_fd >= 0) { 1142 close(idmap_fd); 1143 unlink(idmap_path); 1144 } 1145 return error(); 1146} 1147 1148binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1149 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1150 const std::string& seInfo) { 1151 ENFORCE_UID(AID_SYSTEM); 1152 CHECK_ARGUMENT_UUID(uuid); 1153 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1154 1155 binder::Status res = ok(); 1156 1157 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1158 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1159 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1160 const char* pkgName = packageName.c_str(); 1161 const char* seinfo = seInfo.c_str(); 1162 1163 uid_t uid = multiuser_get_uid(userId, appId); 1164 if (flags & FLAG_STORAGE_CE) { 1165 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1166 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1167 res = error("restorecon failed for " + path); 1168 } 1169 } 1170 if (flags & FLAG_STORAGE_DE) { 1171 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1172 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1173 res = error("restorecon failed for " + path); 1174 } 1175 } 1176 return res; 1177} 1178 1179binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1180 const std::string& instructionSet) { 1181 ENFORCE_UID(AID_SYSTEM); 1182 const char* oat_dir = oatDir.c_str(); 1183 const char* instruction_set = instructionSet.c_str(); 1184 char oat_instr_dir[PKG_PATH_MAX]; 1185 1186 if (validate_apk_path(oat_dir)) { 1187 return error("Invalid path " + oatDir); 1188 } 1189 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1190 return error("Failed to prepare " + oatDir); 1191 } 1192 if (selinux_android_restorecon(oat_dir, 0)) { 1193 return error("Failed to restorecon " + oatDir); 1194 } 1195 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1196 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1197 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1198 } 1199 return ok(); 1200} 1201 1202binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1203 ENFORCE_UID(AID_SYSTEM); 1204 if (validate_apk_path(packageDir.c_str())) { 1205 return error("Invalid path " + packageDir); 1206 } 1207 if (delete_dir_contents_and_dir(packageDir) != 0) { 1208 return error("Failed to delete " + packageDir); 1209 } 1210 return ok(); 1211} 1212 1213binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1214 const std::string& fromBase, const std::string& toBase) { 1215 ENFORCE_UID(AID_SYSTEM); 1216 const char* relative_path = relativePath.c_str(); 1217 const char* from_base = fromBase.c_str(); 1218 const char* to_base = toBase.c_str(); 1219 char from_path[PKG_PATH_MAX]; 1220 char to_path[PKG_PATH_MAX]; 1221 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1222 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1223 1224 if (validate_apk_path_subdirs(from_path)) { 1225 return error(StringPrintf("Invalid from path %s", from_path)); 1226 } 1227 1228 if (validate_apk_path_subdirs(to_path)) { 1229 return error(StringPrintf("Invalid to path %s", to_path)); 1230 } 1231 1232 if (link(from_path, to_path) < 0) { 1233 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1234 } 1235 1236 return ok(); 1237} 1238 1239binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1240 const std::string& instructionSet, const std::string& outputPath) { 1241 ENFORCE_UID(AID_SYSTEM); 1242 1243 const char* apk_path = apkPath.c_str(); 1244 const char* instruction_set = instructionSet.c_str(); 1245 const char* oat_dir = outputPath.c_str(); 1246 1247 bool success = move_ab(apk_path, instruction_set, oat_dir); 1248 return success ? ok() : error(); 1249} 1250 1251binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1252 const std::string& instructionSet, const std::string& outputPath) { 1253 ENFORCE_UID(AID_SYSTEM); 1254 1255 const char* apk_path = apkPath.c_str(); 1256 const char* instruction_set = instructionSet.c_str(); 1257 const char* oat_dir = outputPath.c_str(); 1258 1259 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1260 return res ? ok() : error(); 1261} 1262 1263} // namespace installd 1264} // namespace android 1265