InstalldNativeService.cpp revision 74b37b98cd39e6592953da8a3aad2700e23a872f
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 bool existing) { 205 int res = 0; 206 char* before = nullptr; 207 char* after = nullptr; 208 209 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 210 // libselinux. Not needed here. 211 212 if (lgetfilecon(path.c_str(), &before) < 0) { 213 PLOG(ERROR) << "Failed before getfilecon for " << path; 214 goto fail; 215 } 216 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 217 PLOG(ERROR) << "Failed top-level restorecon for " << path; 218 goto fail; 219 } 220 if (lgetfilecon(path.c_str(), &after) < 0) { 221 PLOG(ERROR) << "Failed after getfilecon for " << path; 222 goto fail; 223 } 224 225 // If the initial top-level restorecon above changed the label, then go 226 // back and restorecon everything recursively 227 if (strcmp(before, after)) { 228 if (existing) { 229 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " 230 << path << "; running recursive restorecon"; 231 } 232 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 233 SELINUX_ANDROID_RESTORECON_RECURSE) < 0) { 234 PLOG(ERROR) << "Failed recursive restorecon for " << path; 235 goto fail; 236 } 237 } 238 239 goto done; 240fail: 241 res = -1; 242done: 243 free(before); 244 free(after); 245 return res; 246} 247 248static int restorecon_app_data_lazy(const std::string& parent, const char* name, 249 const std::string& seInfo, uid_t uid, bool existing) { 250 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid, 251 existing); 252} 253 254static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 255 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 256 PLOG(ERROR) << "Failed to prepare " << path; 257 return -1; 258 } 259 return 0; 260} 261 262static int prepare_app_dir(const std::string& parent, const char* name, mode_t target_mode, 263 uid_t uid) { 264 return prepare_app_dir(StringPrintf("%s/%s", parent.c_str(), name), target_mode, uid); 265} 266 267binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 268 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 269 const std::string& seInfo, int32_t targetSdkVersion, int64_t* _aidl_return) { 270 ENFORCE_UID(AID_SYSTEM); 271 CHECK_ARGUMENT_UUID(uuid); 272 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 273 274 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 275 const char* pkgname = packageName.c_str(); 276 277 // Assume invalid inode unless filled in below 278 if (_aidl_return != nullptr) *_aidl_return = -1; 279 280 uid_t uid = multiuser_get_uid(userId, appId); 281 mode_t target_mode = targetSdkVersion >= MIN_RESTRICTED_HOME_SDK_VERSION ? 0700 : 0751; 282 if (flags & FLAG_STORAGE_CE) { 283 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 284 bool existing = (access(path.c_str(), F_OK) == 0); 285 286 if (prepare_app_dir(path, target_mode, uid) || 287 prepare_app_dir(path, "cache", 0771, uid) || 288 prepare_app_dir(path, "code_cache", 0771, uid)) { 289 return error("Failed to prepare " + path); 290 } 291 292 // Consider restorecon over contents if label changed 293 if (restorecon_app_data_lazy(path, seInfo, uid, existing) || 294 restorecon_app_data_lazy(path, "cache", seInfo, uid, existing) || 295 restorecon_app_data_lazy(path, "code_cache", seInfo, uid, existing)) { 296 return error("Failed to restorecon " + path); 297 } 298 299 // Remember inode numbers of cache directories so that we can clear 300 // contents while CE storage is locked 301 if (write_path_inode(path, "cache", kXattrInodeCache) || 302 write_path_inode(path, "code_cache", kXattrInodeCodeCache)) { 303 return error("Failed to write_path_inode for " + path); 304 } 305 306 // And return the CE inode of the top-level data directory so we can 307 // clear contents while CE storage is locked 308 if ((_aidl_return != nullptr) 309 && get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) != 0) { 310 return error("Failed to get_path_inode for " + path); 311 } 312 } 313 if (flags & FLAG_STORAGE_DE) { 314 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 315 bool existing = (access(path.c_str(), F_OK) == 0); 316 317 if (prepare_app_dir(path, target_mode, uid)) { 318 return error("Failed to prepare " + path); 319 } 320 321 // Consider restorecon over contents if label changed 322 if (restorecon_app_data_lazy(path, seInfo, uid, existing)) { 323 return error("Failed to restorecon " + path); 324 } 325 326 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 327 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 328 // read-write-execute only for the app user. 329 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 330 return error("Failed to prepare " + profile_path); 331 } 332 std::string profile_file = create_primary_profile(profile_path); 333 // read-write only for the app user. 334 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 335 return error("Failed to prepare " + profile_path); 336 } 337 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 338 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 339 // profiles. 340 int shared_app_gid = multiuser_get_shared_app_gid(uid); 341 if ((shared_app_gid != -1) && fs_prepare_dir_strict( 342 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 343 return error("Failed to prepare " + ref_profile_path); 344 } 345 } 346 } 347 return ok(); 348} 349 350binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 351 const std::string& packageName, int32_t userId, int32_t flags) { 352 ENFORCE_UID(AID_SYSTEM); 353 CHECK_ARGUMENT_UUID(uuid); 354 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 355 356 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 357 const char* pkgname = packageName.c_str(); 358 359 // This method only exists to upgrade system apps that have requested 360 // forceDeviceEncrypted, so their default storage always lives in a 361 // consistent location. This only works on non-FBE devices, since we 362 // never want to risk exposing data on a device with real CE/DE storage. 363 364 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 365 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 366 367 // If neither directory is marked as default, assume CE is default 368 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 369 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 370 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 371 return error("Failed to mark default storage " + ce_path); 372 } 373 } 374 375 // Migrate default data location if needed 376 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 377 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 378 379 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 380 LOG(WARNING) << "Requested default storage " << target 381 << " is not active; migrating from " << source; 382 if (delete_dir_contents_and_dir(target) != 0) { 383 return error("Failed to delete " + target); 384 } 385 if (rename(source.c_str(), target.c_str()) != 0) { 386 return error("Failed to rename " + source + " to " + target); 387 } 388 } 389 390 return ok(); 391} 392 393 394binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 395 ENFORCE_UID(AID_SYSTEM); 396 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 397 398 const char* pkgname = packageName.c_str(); 399 binder::Status res = ok(); 400 if (!clear_reference_profile(pkgname)) { 401 res = error("Failed to clear reference profile for " + packageName); 402 } 403 if (!clear_current_profiles(pkgname)) { 404 res = error("Failed to clear current profiles for " + packageName); 405 } 406 return res; 407} 408 409binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 410 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 411 ENFORCE_UID(AID_SYSTEM); 412 CHECK_ARGUMENT_UUID(uuid); 413 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 414 415 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 416 const char* pkgname = packageName.c_str(); 417 418 binder::Status res = ok(); 419 if (flags & FLAG_STORAGE_CE) { 420 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 421 if (flags & FLAG_CLEAR_CACHE_ONLY) { 422 path = read_path_inode(path, "cache", kXattrInodeCache); 423 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 424 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 425 } 426 if (access(path.c_str(), F_OK) == 0) { 427 if (delete_dir_contents(path) != 0) { 428 res = error("Failed to delete contents of " + path); 429 } 430 } 431 } 432 if (flags & FLAG_STORAGE_DE) { 433 std::string suffix = ""; 434 bool only_cache = false; 435 if (flags & FLAG_CLEAR_CACHE_ONLY) { 436 suffix = CACHE_DIR_POSTFIX; 437 only_cache = true; 438 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 439 suffix = CODE_CACHE_DIR_POSTFIX; 440 only_cache = true; 441 } 442 443 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 444 if (access(path.c_str(), F_OK) == 0) { 445 if (delete_dir_contents(path) != 0) { 446 res = error("Failed to delete contents of " + path); 447 } 448 } 449 if (!only_cache) { 450 if (!clear_current_profile(pkgname, userId)) { 451 res = error("Failed to clear current profile for " + packageName); 452 } 453 } 454 } 455 return res; 456} 457 458static int destroy_app_reference_profile(const char *pkgname) { 459 return delete_dir_contents_and_dir( 460 create_data_ref_profile_package_path(pkgname), 461 /*ignore_if_missing*/ true); 462} 463 464static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 465 return delete_dir_contents_and_dir( 466 create_data_user_profile_package_path(userid, pkgname), 467 /*ignore_if_missing*/ true); 468} 469 470binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 471 ENFORCE_UID(AID_SYSTEM); 472 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 473 474 const char* pkgname = packageName.c_str(); 475 binder::Status res = ok(); 476 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 477 for (auto user : users) { 478 if (destroy_app_current_profiles(pkgname, user) != 0) { 479 res = error("Failed to destroy current profiles for " + packageName); 480 } 481 } 482 if (destroy_app_reference_profile(pkgname) != 0) { 483 res = error("Failed to destroy reference profile for " + packageName); 484 } 485 return res; 486} 487 488binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 489 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 490 ENFORCE_UID(AID_SYSTEM); 491 CHECK_ARGUMENT_UUID(uuid); 492 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 493 494 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 495 const char* pkgname = packageName.c_str(); 496 497 binder::Status res = ok(); 498 if (flags & FLAG_STORAGE_CE) { 499 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 500 if (delete_dir_contents_and_dir(path) != 0) { 501 res = error("Failed to delete " + path); 502 } 503 } 504 if (flags & FLAG_STORAGE_DE) { 505 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 506 if (delete_dir_contents_and_dir(path) != 0) { 507 res = error("Failed to delete " + path); 508 } 509 destroy_app_current_profiles(pkgname, userId); 510 // TODO(calin): If the package is still installed by other users it's probably 511 // beneficial to keep the reference profile around. 512 // Verify if it's ok to do that. 513 destroy_app_reference_profile(pkgname); 514 } 515 return res; 516} 517 518binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 519 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 520 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 521 int32_t targetSdkVersion) { 522 ENFORCE_UID(AID_SYSTEM); 523 CHECK_ARGUMENT_UUID(fromUuid); 524 CHECK_ARGUMENT_UUID(toUuid); 525 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 526 527 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 528 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 529 const char* package_name = packageName.c_str(); 530 const char* data_app_name = dataAppName.c_str(); 531 532 binder::Status res = ok(); 533 std::vector<userid_t> users = get_known_users(from_uuid); 534 535 // Copy app 536 { 537 auto from = create_data_app_package_path(from_uuid, data_app_name); 538 auto to = create_data_app_package_path(to_uuid, data_app_name); 539 auto to_parent = create_data_app_path(to_uuid); 540 541 char *argv[] = { 542 (char*) kCpPath, 543 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 544 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 545 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 546 (char*) "-P", /* Do not follow symlinks [default] */ 547 (char*) "-d", /* don't dereference symlinks */ 548 (char*) from.c_str(), 549 (char*) to_parent.c_str() 550 }; 551 552 LOG(DEBUG) << "Copying " << from << " to " << to; 553 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 554 if (rc != 0) { 555 res = error(rc, "Failed copying " + from + " to " + to); 556 goto fail; 557 } 558 559 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 560 res = error("Failed to restorecon " + to); 561 goto fail; 562 } 563 } 564 565 // Copy private data for all known users 566 for (auto user : users) { 567 568 // Data source may not exist for all users; that's okay 569 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 570 if (access(from_ce.c_str(), F_OK) != 0) { 571 LOG(INFO) << "Missing source " << from_ce; 572 continue; 573 } 574 575 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 576 seInfo, targetSdkVersion, nullptr).isOk()) { 577 res = error("Failed to create package target"); 578 goto fail; 579 } 580 581 char *argv[] = { 582 (char*) kCpPath, 583 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 584 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 585 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 586 (char*) "-P", /* Do not follow symlinks [default] */ 587 (char*) "-d", /* don't dereference symlinks */ 588 nullptr, 589 nullptr 590 }; 591 592 { 593 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 594 auto to = create_data_user_de_path(to_uuid, user); 595 argv[6] = (char*) from.c_str(); 596 argv[7] = (char*) to.c_str(); 597 598 LOG(DEBUG) << "Copying " << from << " to " << to; 599 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 600 if (rc != 0) { 601 res = error(rc, "Failed copying " + from + " to " + to); 602 goto fail; 603 } 604 } 605 { 606 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 607 auto to = create_data_user_ce_path(to_uuid, user); 608 argv[6] = (char*) from.c_str(); 609 argv[7] = (char*) to.c_str(); 610 611 LOG(DEBUG) << "Copying " << from << " to " << to; 612 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 613 if (rc != 0) { 614 res = error(rc, "Failed copying " + from + " to " + to); 615 goto fail; 616 } 617 } 618 619 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 620 appId, seInfo).isOk()) { 621 res = error("Failed to restorecon"); 622 goto fail; 623 } 624 } 625 626 // We let the framework scan the new location and persist that before 627 // deleting the data in the old location; this ordering ensures that 628 // we can recover from things like battery pulls. 629 return ok(); 630 631fail: 632 // Nuke everything we might have already copied 633 { 634 auto to = create_data_app_package_path(to_uuid, data_app_name); 635 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 636 LOG(WARNING) << "Failed to rollback " << to; 637 } 638 } 639 for (auto user : users) { 640 { 641 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 642 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 643 LOG(WARNING) << "Failed to rollback " << to; 644 } 645 } 646 { 647 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 648 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 649 LOG(WARNING) << "Failed to rollback " << to; 650 } 651 } 652 } 653 return res; 654} 655 656binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 657 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 658 ENFORCE_UID(AID_SYSTEM); 659 CHECK_ARGUMENT_UUID(uuid); 660 661 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 662 if (flags & FLAG_STORAGE_DE) { 663 if (uuid_ == nullptr) { 664 if (ensure_config_user_dirs(userId) != 0) { 665 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 666 } 667 } 668 } 669 return ok(); 670} 671 672binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 673 int32_t userId, int32_t flags) { 674 ENFORCE_UID(AID_SYSTEM); 675 CHECK_ARGUMENT_UUID(uuid); 676 677 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 678 binder::Status res = ok(); 679 if (flags & FLAG_STORAGE_DE) { 680 auto path = create_data_user_de_path(uuid_, userId); 681 if (delete_dir_contents_and_dir(path, true) != 0) { 682 res = error("Failed to delete " + path); 683 } 684 if (uuid_ == nullptr) { 685 path = create_data_misc_legacy_path(userId); 686 if (delete_dir_contents_and_dir(path, true) != 0) { 687 res = error("Failed to delete " + path); 688 } 689 path = create_data_user_profiles_path(userId); 690 if (delete_dir_contents_and_dir(path, true) != 0) { 691 res = error("Failed to delete " + path); 692 } 693 } 694 } 695 if (flags & FLAG_STORAGE_CE) { 696 auto path = create_data_user_ce_path(uuid_, userId); 697 if (delete_dir_contents_and_dir(path, true) != 0) { 698 res = error("Failed to delete " + path); 699 } 700 path = create_data_media_path(uuid_, userId); 701 if (delete_dir_contents_and_dir(path, true) != 0) { 702 res = error("Failed to delete " + path); 703 } 704 } 705 return res; 706} 707 708/* Try to ensure free_size bytes of storage are available. 709 * Returns 0 on success. 710 * This is rather simple-minded because doing a full LRU would 711 * be potentially memory-intensive, and without atime it would 712 * also require that apps constantly modify file metadata even 713 * when just reading from the cache, which is pretty awful. 714 */ 715binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 716 int64_t freeStorageSize) { 717 ENFORCE_UID(AID_SYSTEM); 718 CHECK_ARGUMENT_UUID(uuid); 719 720 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 721 cache_t* cache; 722 int64_t avail; 723 724 auto data_path = create_data_path(uuid_); 725 726 avail = data_disk_free(data_path); 727 if (avail < 0) { 728 return error("Failed to determine free space for " + data_path); 729 } 730 731 ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail); 732 if (avail >= freeStorageSize) { 733 return ok(); 734 } 735 736 cache = start_cache_collection(); 737 738 auto users = get_known_users(uuid_); 739 for (auto user : users) { 740 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 741 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 742 add_cache_files(cache, 743 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 744 } 745 746 clear_cache_files(data_path, cache, freeStorageSize); 747 finish_cache_collection(cache); 748 749 avail = data_disk_free(data_path); 750 if (avail >= freeStorageSize) { 751 return ok(); 752 } else { 753 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 754 freeStorageSize, data_path.c_str(), avail)); 755 } 756} 757 758binder::Status InstalldNativeService::rmdex(const std::string& codePath, 759 const std::string& instructionSet) { 760 ENFORCE_UID(AID_SYSTEM); 761 char dex_path[PKG_PATH_MAX]; 762 763 const char* path = codePath.c_str(); 764 const char* instruction_set = instructionSet.c_str(); 765 766 if (validate_apk_path(path) && validate_system_app_path(path)) { 767 return error("Invalid path " + codePath); 768 } 769 770 if (!create_cache_path(dex_path, path, instruction_set)) { 771 return error("Failed to create cache path for " + codePath); 772 } 773 774 ALOGV("unlink %s\n", dex_path); 775 if (unlink(dex_path) < 0) { 776 return error(StringPrintf("Failed to unlink %s", dex_path)); 777 } else { 778 return ok(); 779 } 780} 781 782static void add_app_data_size(std::string& path, int64_t *codesize, int64_t *datasize, 783 int64_t *cachesize) { 784 DIR *d; 785 int dfd; 786 struct dirent *de; 787 struct stat s; 788 789 d = opendir(path.c_str()); 790 if (d == nullptr) { 791 PLOG(WARNING) << "Failed to open " << path; 792 return; 793 } 794 dfd = dirfd(d); 795 while ((de = readdir(d))) { 796 const char *name = de->d_name; 797 798 int64_t statsize = 0; 799 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 800 statsize = stat_size(&s); 801 } 802 803 if (de->d_type == DT_DIR) { 804 int subfd; 805 int64_t dirsize = 0; 806 /* always skip "." and ".." */ 807 if (name[0] == '.') { 808 if (name[1] == 0) continue; 809 if ((name[1] == '.') && (name[2] == 0)) continue; 810 } 811 subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 812 if (subfd >= 0) { 813 dirsize = calculate_dir_size(subfd); 814 close(subfd); 815 } 816 // TODO: check xattrs! 817 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 818 *datasize += statsize; 819 *cachesize += dirsize; 820 } else { 821 *datasize += dirsize + statsize; 822 } 823 } else if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 824 *codesize += statsize; 825 } else { 826 *datasize += statsize; 827 } 828 } 829 closedir(d); 830} 831 832binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 833 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode, 834 const std::string& codePath, std::vector<int64_t>* _aidl_return) { 835 ENFORCE_UID(AID_SYSTEM); 836 CHECK_ARGUMENT_UUID(uuid); 837 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 838 839 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 840 const char* pkgname = packageName.c_str(); 841 const char* code_path = codePath.c_str(); 842 843 DIR *d; 844 int dfd; 845 int64_t codesize = 0; 846 int64_t datasize = 0; 847 int64_t cachesize = 0; 848 int64_t asecsize = 0; 849 850 d = opendir(code_path); 851 if (d != nullptr) { 852 dfd = dirfd(d); 853 codesize += calculate_dir_size(dfd); 854 closedir(d); 855 } 856 857 if (flags & FLAG_STORAGE_CE) { 858 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 859 add_app_data_size(path, &codesize, &datasize, &cachesize); 860 } 861 if (flags & FLAG_STORAGE_DE) { 862 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 863 add_app_data_size(path, &codesize, &datasize, &cachesize); 864 } 865 866 std::vector<int64_t> res; 867 res.push_back(codesize); 868 res.push_back(datasize); 869 res.push_back(cachesize); 870 res.push_back(asecsize); 871 *_aidl_return = res; 872 return ok(); 873} 874 875// Dumps the contents of a profile file, using pkgname's dex files for pretty 876// printing the result. 877binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 878 const std::string& codePaths, bool* _aidl_return) { 879 ENFORCE_UID(AID_SYSTEM); 880 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 881 882 const char* pkgname = packageName.c_str(); 883 const char* code_paths = codePaths.c_str(); 884 885 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 886 return ok(); 887} 888 889// TODO: Consider returning error codes. 890binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 891 bool* _aidl_return) { 892 ENFORCE_UID(AID_SYSTEM); 893 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 894 895 const char* pkgname = packageName.c_str(); 896 *_aidl_return = analyse_profiles(uid, pkgname); 897 return ok(); 898} 899 900binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 901 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 902 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 903 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 904 const std::unique_ptr<std::string>& sharedLibraries) { 905 ENFORCE_UID(AID_SYSTEM); 906 CHECK_ARGUMENT_UUID(uuid); 907 if (packageName && *packageName != "*") { 908 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 909 } 910 911 const char* apk_path = apkPath.c_str(); 912 const char* pkgname = packageName ? packageName->c_str() : "*"; 913 const char* instruction_set = instructionSet.c_str(); 914 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 915 const char* compiler_filter = compilerFilter.c_str(); 916 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 917 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 918 919 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 920 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 921 return res ? error(res, "Failed to dexopt") : ok(); 922} 923 924binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 925 ENFORCE_UID(AID_SYSTEM); 926 const char* instruction_set = instructionSet.c_str(); 927 928 char boot_marker_path[PKG_PATH_MAX]; 929 sprintf(boot_marker_path, 930 "%s/%s/%s/.booting", 931 android_data_dir.path, 932 DALVIK_CACHE, 933 instruction_set); 934 935 ALOGV("mark_boot_complete : %s", boot_marker_path); 936 if (unlink(boot_marker_path) != 0) { 937 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 938 } 939 return ok(); 940} 941 942void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 943 struct stat* statbuf) 944{ 945 while (path[basepos] != 0) { 946 if (path[basepos] == '/') { 947 path[basepos] = 0; 948 if (lstat(path, statbuf) < 0) { 949 ALOGV("Making directory: %s\n", path); 950 if (mkdir(path, mode) == 0) { 951 chown(path, uid, gid); 952 } else { 953 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 954 } 955 } 956 path[basepos] = '/'; 957 basepos++; 958 } 959 basepos++; 960 } 961} 962 963binder::Status InstalldNativeService::linkNativeLibraryDirectory( 964 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 965 const std::string& nativeLibPath32, int32_t userId) { 966 ENFORCE_UID(AID_SYSTEM); 967 CHECK_ARGUMENT_UUID(uuid); 968 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 969 970 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 971 const char* pkgname = packageName.c_str(); 972 const char* asecLibDir = nativeLibPath32.c_str(); 973 struct stat s, libStat; 974 binder::Status res = ok(); 975 976 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 977 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 978 979 const char* pkgdir = _pkgdir.c_str(); 980 const char* libsymlink = _libsymlink.c_str(); 981 982 if (stat(pkgdir, &s) < 0) { 983 return error("Failed to stat " + _pkgdir); 984 } 985 986 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 987 return error("Failed to chown " + _pkgdir); 988 } 989 990 if (chmod(pkgdir, 0700) < 0) { 991 res = error("Failed to chmod " + _pkgdir); 992 goto out; 993 } 994 995 if (lstat(libsymlink, &libStat) < 0) { 996 if (errno != ENOENT) { 997 res = error("Failed to stat " + _libsymlink); 998 goto out; 999 } 1000 } else { 1001 if (S_ISDIR(libStat.st_mode)) { 1002 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1003 res = error("Failed to delete " + _libsymlink); 1004 goto out; 1005 } 1006 } else if (S_ISLNK(libStat.st_mode)) { 1007 if (unlink(libsymlink) < 0) { 1008 res = error("Failed to unlink " + _libsymlink); 1009 goto out; 1010 } 1011 } 1012 } 1013 1014 if (symlink(asecLibDir, libsymlink) < 0) { 1015 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1016 goto out; 1017 } 1018 1019out: 1020 if (chmod(pkgdir, s.st_mode) < 0) { 1021 auto msg = "Failed to cleanup chmod " + _pkgdir; 1022 if (res.isOk()) { 1023 res = error(msg); 1024 } else { 1025 PLOG(ERROR) << msg; 1026 } 1027 } 1028 1029 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1030 auto msg = "Failed to cleanup chown " + _pkgdir; 1031 if (res.isOk()) { 1032 res = error(msg); 1033 } else { 1034 PLOG(ERROR) << msg; 1035 } 1036 } 1037 1038 return res; 1039} 1040 1041static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1042{ 1043 static const char *IDMAP_BIN = "/system/bin/idmap"; 1044 static const size_t MAX_INT_LEN = 32; 1045 char idmap_str[MAX_INT_LEN]; 1046 1047 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1048 1049 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1050 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1051} 1052 1053// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1054// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1055static int flatten_path(const char *prefix, const char *suffix, 1056 const char *overlay_path, char *idmap_path, size_t N) 1057{ 1058 if (overlay_path == NULL || idmap_path == NULL) { 1059 return -1; 1060 } 1061 const size_t len_overlay_path = strlen(overlay_path); 1062 // will access overlay_path + 1 further below; requires absolute path 1063 if (len_overlay_path < 2 || *overlay_path != '/') { 1064 return -1; 1065 } 1066 const size_t len_idmap_root = strlen(prefix); 1067 const size_t len_suffix = strlen(suffix); 1068 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1069 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1070 // additions below would cause overflow 1071 return -1; 1072 } 1073 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1074 return -1; 1075 } 1076 memset(idmap_path, 0, N); 1077 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1078 char *ch = idmap_path + len_idmap_root; 1079 while (*ch != '\0') { 1080 if (*ch == '/') { 1081 *ch = '@'; 1082 } 1083 ++ch; 1084 } 1085 return 0; 1086} 1087 1088binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1089 const std::string& overlayApkPath, int32_t uid) { 1090 ENFORCE_UID(AID_SYSTEM); 1091 const char* target_apk = targetApkPath.c_str(); 1092 const char* overlay_apk = overlayApkPath.c_str(); 1093 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1094 1095 int idmap_fd = -1; 1096 char idmap_path[PATH_MAX]; 1097 1098 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1099 idmap_path, sizeof(idmap_path)) == -1) { 1100 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1101 goto fail; 1102 } 1103 1104 unlink(idmap_path); 1105 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1106 if (idmap_fd < 0) { 1107 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1108 goto fail; 1109 } 1110 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1111 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1112 goto fail; 1113 } 1114 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1115 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1116 goto fail; 1117 } 1118 1119 pid_t pid; 1120 pid = fork(); 1121 if (pid == 0) { 1122 /* child -- drop privileges before continuing */ 1123 if (setgid(uid) != 0) { 1124 ALOGE("setgid(%d) failed during idmap\n", uid); 1125 exit(1); 1126 } 1127 if (setuid(uid) != 0) { 1128 ALOGE("setuid(%d) failed during idmap\n", uid); 1129 exit(1); 1130 } 1131 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1132 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1133 exit(1); 1134 } 1135 1136 run_idmap(target_apk, overlay_apk, idmap_fd); 1137 exit(1); /* only if exec call to idmap failed */ 1138 } else { 1139 int status = wait_child(pid); 1140 if (status != 0) { 1141 ALOGE("idmap failed, status=0x%04x\n", status); 1142 goto fail; 1143 } 1144 } 1145 1146 close(idmap_fd); 1147 return ok(); 1148fail: 1149 if (idmap_fd >= 0) { 1150 close(idmap_fd); 1151 unlink(idmap_path); 1152 } 1153 return error(); 1154} 1155 1156binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1157 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1158 const std::string& seInfo) { 1159 ENFORCE_UID(AID_SYSTEM); 1160 CHECK_ARGUMENT_UUID(uuid); 1161 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1162 1163 binder::Status res = ok(); 1164 1165 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1166 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1167 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1168 const char* pkgName = packageName.c_str(); 1169 const char* seinfo = seInfo.c_str(); 1170 1171 uid_t uid = multiuser_get_uid(userId, appId); 1172 if (flags & FLAG_STORAGE_CE) { 1173 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1174 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1175 res = error("restorecon failed for " + path); 1176 } 1177 } 1178 if (flags & FLAG_STORAGE_DE) { 1179 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1180 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1181 res = error("restorecon failed for " + path); 1182 } 1183 } 1184 return res; 1185} 1186 1187binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1188 const std::string& instructionSet) { 1189 ENFORCE_UID(AID_SYSTEM); 1190 const char* oat_dir = oatDir.c_str(); 1191 const char* instruction_set = instructionSet.c_str(); 1192 char oat_instr_dir[PKG_PATH_MAX]; 1193 1194 if (validate_apk_path(oat_dir)) { 1195 return error("Invalid path " + oatDir); 1196 } 1197 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1198 return error("Failed to prepare " + oatDir); 1199 } 1200 if (selinux_android_restorecon(oat_dir, 0)) { 1201 return error("Failed to restorecon " + oatDir); 1202 } 1203 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1204 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1205 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1206 } 1207 return ok(); 1208} 1209 1210binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1211 ENFORCE_UID(AID_SYSTEM); 1212 if (validate_apk_path(packageDir.c_str())) { 1213 return error("Invalid path " + packageDir); 1214 } 1215 if (delete_dir_contents_and_dir(packageDir) != 0) { 1216 return error("Failed to delete " + packageDir); 1217 } 1218 return ok(); 1219} 1220 1221binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1222 const std::string& fromBase, const std::string& toBase) { 1223 ENFORCE_UID(AID_SYSTEM); 1224 const char* relative_path = relativePath.c_str(); 1225 const char* from_base = fromBase.c_str(); 1226 const char* to_base = toBase.c_str(); 1227 char from_path[PKG_PATH_MAX]; 1228 char to_path[PKG_PATH_MAX]; 1229 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1230 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1231 1232 if (validate_apk_path_subdirs(from_path)) { 1233 return error(StringPrintf("Invalid from path %s", from_path)); 1234 } 1235 1236 if (validate_apk_path_subdirs(to_path)) { 1237 return error(StringPrintf("Invalid to path %s", to_path)); 1238 } 1239 1240 if (link(from_path, to_path) < 0) { 1241 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1242 } 1243 1244 return ok(); 1245} 1246 1247binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1248 const std::string& instructionSet, const std::string& outputPath) { 1249 ENFORCE_UID(AID_SYSTEM); 1250 1251 const char* apk_path = apkPath.c_str(); 1252 const char* instruction_set = instructionSet.c_str(); 1253 const char* oat_dir = outputPath.c_str(); 1254 1255 bool success = move_ab(apk_path, instruction_set, oat_dir); 1256 return success ? ok() : error(); 1257} 1258 1259binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1260 const std::string& instructionSet, const std::string& outputPath) { 1261 ENFORCE_UID(AID_SYSTEM); 1262 1263 const char* apk_path = apkPath.c_str(); 1264 const char* instruction_set = instructionSet.c_str(); 1265 const char* oat_dir = outputPath.c_str(); 1266 1267 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1268 return res ? ok() : error(); 1269} 1270 1271} // namespace installd 1272} // namespace android 1273