InstalldNativeService.cpp revision 90aff26f0135379db19432ae90c40c0831ba5954
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 char* PKG_LIB_POSTFIX = "/lib"; 65static constexpr const char* CACHE_DIR_POSTFIX = "/cache"; 66static constexpr const char* CODE_CACHE_DIR_POSTFIX = "/code_cache"; 67 68static constexpr const char* IDMAP_PREFIX = "/data/resource-cache/"; 69static constexpr const char* IDMAP_SUFFIX = "@idmap"; 70 71// NOTE: keep in sync with StorageManager 72static constexpr int FLAG_STORAGE_DE = 1 << 0; 73static constexpr int FLAG_STORAGE_CE = 1 << 1; 74 75// NOTE: keep in sync with Installer 76static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8; 77static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9; 78 79 80#define MIN_RESTRICTED_HOME_SDK_VERSION 24 // > M 81namespace { 82 83constexpr const char* kDump = "android.permission.DUMP"; 84 85static binder::Status ok() { 86 return binder::Status::ok(); 87} 88 89static binder::Status exception(uint32_t code) { 90 return binder::Status::fromExceptionCode(code); 91} 92 93static binder::Status exception(uint32_t code, const std::string& msg) { 94 return binder::Status::fromExceptionCode(code, String8(msg.c_str())); 95} 96 97static binder::Status error() { 98 return binder::Status::fromServiceSpecificError(errno); 99} 100 101static binder::Status error(const std::string& msg) { 102 PLOG(ERROR) << msg; 103 return binder::Status::fromServiceSpecificError(errno, String8(msg.c_str())); 104} 105 106static binder::Status error(uint32_t code, const std::string& msg) { 107 LOG(ERROR) << msg << " (" << code << ")"; 108 return binder::Status::fromServiceSpecificError(code, String8(msg.c_str())); 109} 110 111binder::Status checkPermission(const char* permission) { 112 pid_t pid; 113 uid_t uid; 114 115 if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid), 116 reinterpret_cast<int32_t*>(&uid))) { 117 return ok(); 118 } else { 119 return exception(binder::Status::EX_SECURITY, 120 StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission)); 121 } 122} 123 124binder::Status checkUid(uid_t expectedUid) { 125 uid_t uid = IPCThreadState::self()->getCallingUid(); 126 if (uid == expectedUid || uid == AID_ROOT) { 127 return ok(); 128 } else { 129 return exception(binder::Status::EX_SECURITY, 130 StringPrintf("UID %d is not expected UID %d", uid, expectedUid)); 131 } 132} 133 134binder::Status checkArgumentUuid(const std::unique_ptr<std::string>& uuid) { 135 if (!uuid || is_valid_filename(*uuid)) { 136 return ok(); 137 } else { 138 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 139 StringPrintf("UUID %s is malformed", uuid->c_str())); 140 } 141} 142 143binder::Status checkArgumentPackageName(const std::string& packageName) { 144 if (is_valid_package_name(packageName.c_str())) { 145 return ok(); 146 } else { 147 return exception(binder::Status::EX_ILLEGAL_ARGUMENT, 148 StringPrintf("Package name %s is malformed", packageName.c_str())); 149 } 150} 151 152#define ENFORCE_UID(uid) { \ 153 binder::Status status = checkUid((uid)); \ 154 if (!status.isOk()) { \ 155 return status; \ 156 } \ 157} 158 159#define CHECK_ARGUMENT_UUID(uuid) { \ 160 binder::Status status = checkArgumentUuid((uuid)); \ 161 if (!status.isOk()) { \ 162 return status; \ 163 } \ 164} 165 166#define CHECK_ARGUMENT_PACKAGE_NAME(packageName) { \ 167 binder::Status status = \ 168 checkArgumentPackageName((packageName)); \ 169 if (!status.isOk()) { \ 170 return status; \ 171 } \ 172} 173 174} // namespace 175 176status_t InstalldNativeService::start() { 177 IPCThreadState::self()->disableBackgroundScheduling(true); 178 status_t ret = BinderService<InstalldNativeService>::publish(); 179 if (ret != android::OK) { 180 return ret; 181 } 182 sp<ProcessState> ps(ProcessState::self()); 183 ps->startThreadPool(); 184 ps->giveThreadPoolName(); 185 return android::OK; 186} 187 188status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) { 189 const binder::Status dump_permission = checkPermission(kDump); 190 if (!dump_permission.isOk()) { 191 const String8 msg(dump_permission.toString8()); 192 write(fd, msg.string(), msg.size()); 193 return PERMISSION_DENIED; 194 } 195 196 std::string msg = "installd is happy\n"; 197 write(fd, msg.c_str(), strlen(msg.c_str())); 198 return NO_ERROR; 199} 200 201/** 202 * Perform restorecon of the given path, but only perform recursive restorecon 203 * if the label of that top-level file actually changed. This can save us 204 * significant time by avoiding no-op traversals of large filesystem trees. 205 */ 206static int restorecon_app_data_lazy(const std::string& path, const std::string& seInfo, uid_t uid) { 207 int res = 0; 208 char* before = nullptr; 209 char* after = nullptr; 210 211 // Note that SELINUX_ANDROID_RESTORECON_DATADATA flag is set by 212 // libselinux. Not needed here. 213 214 if (lgetfilecon(path.c_str(), &before) < 0) { 215 PLOG(ERROR) << "Failed before getfilecon for " << path; 216 goto fail; 217 } 218 if (selinux_android_restorecon_pkgdir(path.c_str(), seInfo.c_str(), uid, 0) < 0) { 219 PLOG(ERROR) << "Failed top-level restorecon for " << path; 220 goto fail; 221 } 222 if (lgetfilecon(path.c_str(), &after) < 0) { 223 PLOG(ERROR) << "Failed after getfilecon for " << path; 224 goto fail; 225 } 226 227 // If the initial top-level restorecon above changed the label, then go 228 // back and restorecon everything recursively 229 if (strcmp(before, after)) { 230 LOG(DEBUG) << "Detected label change from " << before << " to " << after << " at " << path 231 << "; running recursive restorecon"; 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) { 250 return restorecon_app_data_lazy(StringPrintf("%s/%s", parent.c_str(), name), seInfo, uid); 251} 252 253static int prepare_app_dir(const std::string& path, mode_t target_mode, uid_t uid) { 254 if (fs_prepare_dir_strict(path.c_str(), target_mode, uid, uid) != 0) { 255 PLOG(ERROR) << "Failed to prepare " << path; 256 return -1; 257 } 258 return 0; 259} 260 261static int prepare_app_dir(const std::string& parent, const char* name, mode_t target_mode, 262 uid_t uid) { 263 return prepare_app_dir(StringPrintf("%s/%s", parent.c_str(), name), target_mode, uid); 264} 265 266binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid, 267 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 268 const std::string& seInfo, int32_t targetSdkVersion) { 269 ENFORCE_UID(AID_SYSTEM); 270 CHECK_ARGUMENT_UUID(uuid); 271 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 272 273 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 274 const char* pkgname = packageName.c_str(); 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 if (flags & FLAG_STORAGE_DE) { 301 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 302 if (prepare_app_dir(path, target_mode, uid)) { 303 return error("Failed to prepare " + path); 304 } 305 306 // Consider restorecon over contents if label changed 307 if (restorecon_app_data_lazy(path, seInfo, uid)) { 308 return error("Failed to restorecon " + path); 309 } 310 311 if (property_get_bool("dalvik.vm.usejitprofiles", false)) { 312 const std::string profile_path = create_data_user_profile_package_path(userId, pkgname); 313 // read-write-execute only for the app user. 314 if (fs_prepare_dir_strict(profile_path.c_str(), 0700, uid, uid) != 0) { 315 return error("Failed to prepare " + profile_path); 316 } 317 std::string profile_file = create_primary_profile(profile_path); 318 // read-write only for the app user. 319 if (fs_prepare_file_strict(profile_file.c_str(), 0600, uid, uid) != 0) { 320 return error("Failed to prepare " + profile_path); 321 } 322 const std::string ref_profile_path = create_data_ref_profile_package_path(pkgname); 323 // dex2oat/profman runs under the shared app gid and it needs to read/write reference 324 // profiles. 325 appid_t shared_app_gid = multiuser_get_shared_app_gid(uid); 326 if (fs_prepare_dir_strict( 327 ref_profile_path.c_str(), 0700, shared_app_gid, shared_app_gid) != 0) { 328 return error("Failed to prepare " + ref_profile_path); 329 } 330 } 331 } 332 return ok(); 333} 334 335binder::Status InstalldNativeService::migrateAppData(const std::unique_ptr<std::string>& uuid, 336 const std::string& packageName, int32_t userId, int32_t flags) { 337 ENFORCE_UID(AID_SYSTEM); 338 CHECK_ARGUMENT_UUID(uuid); 339 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 340 341 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 342 const char* pkgname = packageName.c_str(); 343 344 // This method only exists to upgrade system apps that have requested 345 // forceDeviceEncrypted, so their default storage always lives in a 346 // consistent location. This only works on non-FBE devices, since we 347 // never want to risk exposing data on a device with real CE/DE storage. 348 349 auto ce_path = create_data_user_ce_package_path(uuid_, userId, pkgname); 350 auto de_path = create_data_user_de_package_path(uuid_, userId, pkgname); 351 352 // If neither directory is marked as default, assume CE is default 353 if (getxattr(ce_path.c_str(), kXattrDefault, nullptr, 0) == -1 354 && getxattr(de_path.c_str(), kXattrDefault, nullptr, 0) == -1) { 355 if (setxattr(ce_path.c_str(), kXattrDefault, nullptr, 0, 0) != 0) { 356 return error("Failed to mark default storage " + ce_path); 357 } 358 } 359 360 // Migrate default data location if needed 361 auto target = (flags & FLAG_STORAGE_DE) ? de_path : ce_path; 362 auto source = (flags & FLAG_STORAGE_DE) ? ce_path : de_path; 363 364 if (getxattr(target.c_str(), kXattrDefault, nullptr, 0) == -1) { 365 LOG(WARNING) << "Requested default storage " << target 366 << " is not active; migrating from " << source; 367 if (delete_dir_contents_and_dir(target) != 0) { 368 return error("Failed to delete " + target); 369 } 370 if (rename(source.c_str(), target.c_str()) != 0) { 371 return error("Failed to rename " + source + " to " + target); 372 } 373 } 374 375 return ok(); 376} 377 378 379binder::Status InstalldNativeService::clearAppProfiles(const std::string& packageName) { 380 ENFORCE_UID(AID_SYSTEM); 381 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 382 383 const char* pkgname = packageName.c_str(); 384 binder::Status res = ok(); 385 if (!clear_reference_profile(pkgname)) { 386 res = error("Failed to clear reference profile for " + packageName); 387 } 388 if (!clear_current_profiles(pkgname)) { 389 res = error("Failed to clear current profiles for " + packageName); 390 } 391 return res; 392} 393 394binder::Status InstalldNativeService::clearAppData(const std::unique_ptr<std::string>& uuid, 395 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 396 ENFORCE_UID(AID_SYSTEM); 397 CHECK_ARGUMENT_UUID(uuid); 398 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 399 400 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 401 const char* pkgname = packageName.c_str(); 402 403 binder::Status res = ok(); 404 if (flags & FLAG_STORAGE_CE) { 405 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 406 if (flags & FLAG_CLEAR_CACHE_ONLY) { 407 path = read_path_inode(path, "cache", kXattrInodeCache); 408 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 409 path = read_path_inode(path, "code_cache", kXattrInodeCodeCache); 410 } 411 if (access(path.c_str(), F_OK) == 0) { 412 if (delete_dir_contents(path) != 0) { 413 res = error("Failed to delete contents of " + path); 414 } 415 } 416 } 417 if (flags & FLAG_STORAGE_DE) { 418 std::string suffix = ""; 419 bool only_cache = false; 420 if (flags & FLAG_CLEAR_CACHE_ONLY) { 421 suffix = CACHE_DIR_POSTFIX; 422 only_cache = true; 423 } else if (flags & FLAG_CLEAR_CODE_CACHE_ONLY) { 424 suffix = CODE_CACHE_DIR_POSTFIX; 425 only_cache = true; 426 } 427 428 auto path = create_data_user_de_package_path(uuid_, userId, pkgname) + suffix; 429 if (access(path.c_str(), F_OK) == 0) { 430 if (delete_dir_contents(path) != 0) { 431 res = error("Failed to delete contents of " + path); 432 } 433 } 434 if (!only_cache) { 435 if (!clear_current_profile(pkgname, userId)) { 436 res = error("Failed to clear current profile for " + packageName); 437 } 438 } 439 } 440 return res; 441} 442 443static int destroy_app_reference_profile(const char *pkgname) { 444 return delete_dir_contents_and_dir( 445 create_data_ref_profile_package_path(pkgname), 446 /*ignore_if_missing*/ true); 447} 448 449static int destroy_app_current_profiles(const char *pkgname, userid_t userid) { 450 return delete_dir_contents_and_dir( 451 create_data_user_profile_package_path(userid, pkgname), 452 /*ignore_if_missing*/ true); 453} 454 455binder::Status InstalldNativeService::destroyAppProfiles(const std::string& packageName) { 456 ENFORCE_UID(AID_SYSTEM); 457 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 458 459 const char* pkgname = packageName.c_str(); 460 binder::Status res = ok(); 461 std::vector<userid_t> users = get_known_users(/*volume_uuid*/ nullptr); 462 for (auto user : users) { 463 if (destroy_app_current_profiles(pkgname, user) != 0) { 464 res = error("Failed to destroy current profiles for " + packageName); 465 } 466 } 467 if (destroy_app_reference_profile(pkgname) != 0) { 468 res = error("Failed to destroy reference profile for " + packageName); 469 } 470 return res; 471} 472 473binder::Status InstalldNativeService::destroyAppData(const std::unique_ptr<std::string>& uuid, 474 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode) { 475 ENFORCE_UID(AID_SYSTEM); 476 CHECK_ARGUMENT_UUID(uuid); 477 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 478 479 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 480 const char* pkgname = packageName.c_str(); 481 482 binder::Status res = ok(); 483 if (flags & FLAG_STORAGE_CE) { 484 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 485 if (delete_dir_contents_and_dir(path) != 0) { 486 res = error("Failed to delete " + path); 487 } 488 } 489 if (flags & FLAG_STORAGE_DE) { 490 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 491 if (delete_dir_contents_and_dir(path) != 0) { 492 res = error("Failed to delete " + path); 493 } 494 destroy_app_current_profiles(pkgname, userId); 495 // TODO(calin): If the package is still installed by other users it's probably 496 // beneficial to keep the reference profile around. 497 // Verify if it's ok to do that. 498 destroy_app_reference_profile(pkgname); 499 } 500 return res; 501} 502 503binder::Status InstalldNativeService::moveCompleteApp(const std::unique_ptr<std::string>& fromUuid, 504 const std::unique_ptr<std::string>& toUuid, const std::string& packageName, 505 const std::string& dataAppName, int32_t appId, const std::string& seInfo, 506 int32_t targetSdkVersion) { 507 ENFORCE_UID(AID_SYSTEM); 508 CHECK_ARGUMENT_UUID(fromUuid); 509 CHECK_ARGUMENT_UUID(toUuid); 510 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 511 512 const char* from_uuid = fromUuid ? fromUuid->c_str() : nullptr; 513 const char* to_uuid = toUuid ? toUuid->c_str() : nullptr; 514 const char* package_name = packageName.c_str(); 515 const char* data_app_name = dataAppName.c_str(); 516 517 binder::Status res = ok(); 518 std::vector<userid_t> users = get_known_users(from_uuid); 519 520 // Copy app 521 { 522 auto from = create_data_app_package_path(from_uuid, data_app_name); 523 auto to = create_data_app_package_path(to_uuid, data_app_name); 524 auto to_parent = create_data_app_path(to_uuid); 525 526 char *argv[] = { 527 (char*) kCpPath, 528 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 529 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 530 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 531 (char*) "-P", /* Do not follow symlinks [default] */ 532 (char*) "-d", /* don't dereference symlinks */ 533 (char*) from.c_str(), 534 (char*) to_parent.c_str() 535 }; 536 537 LOG(DEBUG) << "Copying " << from << " to " << to; 538 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 539 if (rc != 0) { 540 res = error(rc, "Failed copying " + from + " to " + to); 541 goto fail; 542 } 543 544 if (selinux_android_restorecon(to.c_str(), SELINUX_ANDROID_RESTORECON_RECURSE) != 0) { 545 res = error("Failed to restorecon " + to); 546 goto fail; 547 } 548 } 549 550 // Copy private data for all known users 551 for (auto user : users) { 552 553 // Data source may not exist for all users; that's okay 554 auto from_ce = create_data_user_ce_package_path(from_uuid, user, package_name); 555 if (access(from_ce.c_str(), F_OK) != 0) { 556 LOG(INFO) << "Missing source " << from_ce; 557 continue; 558 } 559 560 if (!createAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, appId, 561 seInfo, targetSdkVersion).isOk()) { 562 res = error("Failed to create package target"); 563 goto fail; 564 } 565 566 char *argv[] = { 567 (char*) kCpPath, 568 (char*) "-F", /* delete any existing destination file first (--remove-destination) */ 569 (char*) "-p", /* preserve timestamps, ownership, and permissions */ 570 (char*) "-R", /* recurse into subdirectories (DEST must be a directory) */ 571 (char*) "-P", /* Do not follow symlinks [default] */ 572 (char*) "-d", /* don't dereference symlinks */ 573 nullptr, 574 nullptr 575 }; 576 577 { 578 auto from = create_data_user_de_package_path(from_uuid, user, package_name); 579 auto to = create_data_user_de_path(to_uuid, user); 580 argv[6] = (char*) from.c_str(); 581 argv[7] = (char*) to.c_str(); 582 583 LOG(DEBUG) << "Copying " << from << " to " << to; 584 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 585 if (rc != 0) { 586 res = error(rc, "Failed copying " + from + " to " + to); 587 goto fail; 588 } 589 } 590 { 591 auto from = create_data_user_ce_package_path(from_uuid, user, package_name); 592 auto to = create_data_user_ce_path(to_uuid, user); 593 argv[6] = (char*) from.c_str(); 594 argv[7] = (char*) to.c_str(); 595 596 LOG(DEBUG) << "Copying " << from << " to " << to; 597 int rc = android_fork_execvp(ARRAY_SIZE(argv), argv, NULL, false, true); 598 if (rc != 0) { 599 res = error(rc, "Failed copying " + from + " to " + to); 600 goto fail; 601 } 602 } 603 604 if (!restoreconAppData(toUuid, packageName, user, FLAG_STORAGE_CE | FLAG_STORAGE_DE, 605 appId, seInfo).isOk()) { 606 res = error("Failed to restorecon"); 607 goto fail; 608 } 609 } 610 611 // We let the framework scan the new location and persist that before 612 // deleting the data in the old location; this ordering ensures that 613 // we can recover from things like battery pulls. 614 return ok(); 615 616fail: 617 // Nuke everything we might have already copied 618 { 619 auto to = create_data_app_package_path(to_uuid, data_app_name); 620 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 621 LOG(WARNING) << "Failed to rollback " << to; 622 } 623 } 624 for (auto user : users) { 625 { 626 auto to = create_data_user_de_package_path(to_uuid, user, package_name); 627 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 628 LOG(WARNING) << "Failed to rollback " << to; 629 } 630 } 631 { 632 auto to = create_data_user_ce_package_path(to_uuid, user, package_name); 633 if (delete_dir_contents(to.c_str(), 1, NULL) != 0) { 634 LOG(WARNING) << "Failed to rollback " << to; 635 } 636 } 637 } 638 return res; 639} 640 641binder::Status InstalldNativeService::createUserData(const std::unique_ptr<std::string>& uuid, 642 int32_t userId, int32_t userSerial ATTRIBUTE_UNUSED, int32_t flags) { 643 ENFORCE_UID(AID_SYSTEM); 644 CHECK_ARGUMENT_UUID(uuid); 645 646 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 647 if (flags & FLAG_STORAGE_DE) { 648 if (uuid_ == nullptr) { 649 if (ensure_config_user_dirs(userId) != 0) { 650 return error(StringPrintf("Failed to ensure dirs for %d", userId)); 651 } 652 } 653 } 654 return ok(); 655} 656 657binder::Status InstalldNativeService::destroyUserData(const std::unique_ptr<std::string>& uuid, 658 int32_t userId, int32_t flags) { 659 ENFORCE_UID(AID_SYSTEM); 660 CHECK_ARGUMENT_UUID(uuid); 661 662 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 663 binder::Status res = ok(); 664 if (flags & FLAG_STORAGE_DE) { 665 auto path = create_data_user_de_path(uuid_, userId); 666 if (delete_dir_contents_and_dir(path, true) != 0) { 667 res = error("Failed to delete " + path); 668 } 669 if (uuid_ == nullptr) { 670 path = create_data_misc_legacy_path(userId); 671 if (delete_dir_contents_and_dir(path, true) != 0) { 672 res = error("Failed to delete " + path); 673 } 674 path = create_data_user_profiles_path(userId); 675 if (delete_dir_contents_and_dir(path, true) != 0) { 676 res = error("Failed to delete " + path); 677 } 678 } 679 } 680 if (flags & FLAG_STORAGE_CE) { 681 auto path = create_data_user_ce_path(uuid_, userId); 682 if (delete_dir_contents_and_dir(path, true) != 0) { 683 res = error("Failed to delete " + path); 684 } 685 path = create_data_media_path(uuid_, userId); 686 if (delete_dir_contents_and_dir(path, true) != 0) { 687 res = error("Failed to delete " + path); 688 } 689 } 690 return res; 691} 692 693/* Try to ensure free_size bytes of storage are available. 694 * Returns 0 on success. 695 * This is rather simple-minded because doing a full LRU would 696 * be potentially memory-intensive, and without atime it would 697 * also require that apps constantly modify file metadata even 698 * when just reading from the cache, which is pretty awful. 699 */ 700binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid, 701 int64_t freeStorageSize) { 702 ENFORCE_UID(AID_SYSTEM); 703 CHECK_ARGUMENT_UUID(uuid); 704 705 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 706 cache_t* cache; 707 int64_t avail; 708 709 auto data_path = create_data_path(uuid_); 710 711 avail = data_disk_free(data_path); 712 if (avail < 0) { 713 return error("Failed to determine free space for " + data_path); 714 } 715 716 ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail); 717 if (avail >= freeStorageSize) { 718 return ok(); 719 } 720 721 cache = start_cache_collection(); 722 723 auto users = get_known_users(uuid_); 724 for (auto user : users) { 725 add_cache_files(cache, create_data_user_ce_path(uuid_, user)); 726 add_cache_files(cache, create_data_user_de_path(uuid_, user)); 727 add_cache_files(cache, 728 StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str())); 729 } 730 731 clear_cache_files(data_path, cache, freeStorageSize); 732 finish_cache_collection(cache); 733 734 avail = data_disk_free(data_path); 735 if (avail >= freeStorageSize) { 736 return ok(); 737 } else { 738 return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64, 739 freeStorageSize, data_path.c_str(), avail)); 740 } 741} 742 743binder::Status InstalldNativeService::rmdex(const std::string& codePath, 744 const std::string& instructionSet) { 745 ENFORCE_UID(AID_SYSTEM); 746 char dex_path[PKG_PATH_MAX]; 747 748 const char* path = codePath.c_str(); 749 const char* instruction_set = instructionSet.c_str(); 750 751 if (validate_apk_path(path) && validate_system_app_path(path)) { 752 return error("Invalid path " + codePath); 753 } 754 755 if (!create_cache_path(dex_path, path, instruction_set)) { 756 return error("Failed to create cache path for " + codePath); 757 } 758 759 ALOGV("unlink %s\n", dex_path); 760 if (unlink(dex_path) < 0) { 761 return error(StringPrintf("Failed to unlink %s", dex_path)); 762 } else { 763 return ok(); 764 } 765} 766 767static void add_app_data_size(std::string& path, int64_t *codesize, int64_t *datasize, 768 int64_t *cachesize) { 769 DIR *d; 770 int dfd; 771 struct dirent *de; 772 struct stat s; 773 774 d = opendir(path.c_str()); 775 if (d == nullptr) { 776 PLOG(WARNING) << "Failed to open " << path; 777 return; 778 } 779 dfd = dirfd(d); 780 while ((de = readdir(d))) { 781 const char *name = de->d_name; 782 783 int64_t statsize = 0; 784 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 785 statsize = stat_size(&s); 786 } 787 788 if (de->d_type == DT_DIR) { 789 int subfd; 790 int64_t dirsize = 0; 791 /* always skip "." and ".." */ 792 if (name[0] == '.') { 793 if (name[1] == 0) continue; 794 if ((name[1] == '.') && (name[2] == 0)) continue; 795 } 796 subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 797 if (subfd >= 0) { 798 dirsize = calculate_dir_size(subfd); 799 close(subfd); 800 } 801 // TODO: check xattrs! 802 if (!strcmp(name, "cache") || !strcmp(name, "code_cache")) { 803 *datasize += statsize; 804 *cachesize += dirsize; 805 } else { 806 *datasize += dirsize + statsize; 807 } 808 } else if (de->d_type == DT_LNK && !strcmp(name, "lib")) { 809 *codesize += statsize; 810 } else { 811 *datasize += statsize; 812 } 813 } 814 closedir(d); 815} 816 817binder::Status InstalldNativeService::getAppSize(const std::unique_ptr<std::string>& uuid, 818 const std::string& packageName, int32_t userId, int32_t flags, int64_t ceDataInode, 819 const std::string& codePath, std::vector<int64_t>* _aidl_return) { 820 ENFORCE_UID(AID_SYSTEM); 821 CHECK_ARGUMENT_UUID(uuid); 822 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 823 824 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 825 const char* pkgname = packageName.c_str(); 826 const char* code_path = codePath.c_str(); 827 828 DIR *d; 829 int dfd; 830 int64_t codesize = 0; 831 int64_t datasize = 0; 832 int64_t cachesize = 0; 833 int64_t asecsize = 0; 834 835 d = opendir(code_path); 836 if (d != nullptr) { 837 dfd = dirfd(d); 838 codesize += calculate_dir_size(dfd); 839 closedir(d); 840 } 841 842 if (flags & FLAG_STORAGE_CE) { 843 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInode); 844 add_app_data_size(path, &codesize, &datasize, &cachesize); 845 } 846 if (flags & FLAG_STORAGE_DE) { 847 auto path = create_data_user_de_package_path(uuid_, userId, pkgname); 848 add_app_data_size(path, &codesize, &datasize, &cachesize); 849 } 850 851 std::vector<int64_t> res; 852 res.push_back(codesize); 853 res.push_back(datasize); 854 res.push_back(cachesize); 855 res.push_back(asecsize); 856 *_aidl_return = res; 857 return ok(); 858} 859 860binder::Status InstalldNativeService::getAppDataInode(const std::unique_ptr<std::string>& uuid, 861 const std::string& packageName, int32_t userId, int32_t flags, int64_t* _aidl_return) { 862 ENFORCE_UID(AID_SYSTEM); 863 CHECK_ARGUMENT_UUID(uuid); 864 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 865 866 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 867 const char* pkgname = packageName.c_str(); 868 869 if (flags & FLAG_STORAGE_CE) { 870 auto path = create_data_user_ce_package_path(uuid_, userId, pkgname); 871 if (get_path_inode(path, reinterpret_cast<ino_t*>(_aidl_return)) == 0) { 872 return ok(); 873 } else { 874 return error("Failed to get_path_inode for " + path); 875 } 876 } 877 return exception(binder::Status::EX_UNSUPPORTED_OPERATION); 878} 879 880// Dumps the contents of a profile file, using pkgname's dex files for pretty 881// printing the result. 882binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName, 883 const std::string& codePaths, bool* _aidl_return) { 884 ENFORCE_UID(AID_SYSTEM); 885 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 886 887 const char* pkgname = packageName.c_str(); 888 const char* code_paths = codePaths.c_str(); 889 890 *_aidl_return = dump_profiles(uid, pkgname, code_paths); 891 return ok(); 892} 893 894// TODO: Consider returning error codes. 895binder::Status InstalldNativeService::mergeProfiles(int32_t uid, const std::string& packageName, 896 bool* _aidl_return) { 897 ENFORCE_UID(AID_SYSTEM); 898 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 899 900 const char* pkgname = packageName.c_str(); 901 *_aidl_return = analyse_profiles(uid, pkgname); 902 return ok(); 903} 904 905binder::Status InstalldNativeService::dexopt(const std::string& apkPath, int32_t uid, 906 const std::unique_ptr<std::string>& packageName, const std::string& instructionSet, 907 int32_t dexoptNeeded, const std::unique_ptr<std::string>& outputPath, int32_t dexFlags, 908 const std::string& compilerFilter, const std::unique_ptr<std::string>& uuid, 909 const std::unique_ptr<std::string>& sharedLibraries) { 910 ENFORCE_UID(AID_SYSTEM); 911 CHECK_ARGUMENT_UUID(uuid); 912 if (packageName && *packageName != "*") { 913 CHECK_ARGUMENT_PACKAGE_NAME(*packageName); 914 } 915 916 const char* apk_path = apkPath.c_str(); 917 const char* pkgname = packageName ? packageName->c_str() : "*"; 918 const char* instruction_set = instructionSet.c_str(); 919 const char* oat_dir = outputPath ? outputPath->c_str() : nullptr; 920 const char* compiler_filter = compilerFilter.c_str(); 921 const char* volume_uuid = uuid ? uuid->c_str() : nullptr; 922 const char* shared_libraries = sharedLibraries ? sharedLibraries->c_str() : nullptr; 923 924 int res = android::installd::dexopt(apk_path, uid, pkgname, instruction_set, dexoptNeeded, 925 oat_dir, dexFlags, compiler_filter, volume_uuid, shared_libraries); 926 return res ? error(res, "Failed to dexopt") : ok(); 927} 928 929binder::Status InstalldNativeService::markBootComplete(const std::string& instructionSet) { 930 ENFORCE_UID(AID_SYSTEM); 931 const char* instruction_set = instructionSet.c_str(); 932 933 char boot_marker_path[PKG_PATH_MAX]; 934 sprintf(boot_marker_path, 935 "%s/%s/%s/.booting", 936 android_data_dir.path, 937 DALVIK_CACHE, 938 instruction_set); 939 940 ALOGV("mark_boot_complete : %s", boot_marker_path); 941 if (unlink(boot_marker_path) != 0) { 942 return error(StringPrintf("Failed to unlink %s", boot_marker_path)); 943 } 944 return ok(); 945} 946 947void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid, 948 struct stat* statbuf) 949{ 950 while (path[basepos] != 0) { 951 if (path[basepos] == '/') { 952 path[basepos] = 0; 953 if (lstat(path, statbuf) < 0) { 954 ALOGV("Making directory: %s\n", path); 955 if (mkdir(path, mode) == 0) { 956 chown(path, uid, gid); 957 } else { 958 ALOGW("Unable to make directory %s: %s\n", path, strerror(errno)); 959 } 960 } 961 path[basepos] = '/'; 962 basepos++; 963 } 964 basepos++; 965 } 966} 967 968binder::Status InstalldNativeService::linkNativeLibraryDirectory( 969 const std::unique_ptr<std::string>& uuid, const std::string& packageName, 970 const std::string& nativeLibPath32, int32_t userId) { 971 ENFORCE_UID(AID_SYSTEM); 972 CHECK_ARGUMENT_UUID(uuid); 973 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 974 975 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 976 const char* pkgname = packageName.c_str(); 977 const char* asecLibDir = nativeLibPath32.c_str(); 978 struct stat s, libStat; 979 binder::Status res = ok(); 980 981 auto _pkgdir = create_data_user_ce_package_path(uuid_, userId, pkgname); 982 auto _libsymlink = _pkgdir + PKG_LIB_POSTFIX; 983 984 const char* pkgdir = _pkgdir.c_str(); 985 const char* libsymlink = _libsymlink.c_str(); 986 987 if (stat(pkgdir, &s) < 0) { 988 return error("Failed to stat " + _pkgdir); 989 } 990 991 if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) { 992 return error("Failed to chown " + _pkgdir); 993 } 994 995 if (chmod(pkgdir, 0700) < 0) { 996 res = error("Failed to chmod " + _pkgdir); 997 goto out; 998 } 999 1000 if (lstat(libsymlink, &libStat) < 0) { 1001 if (errno != ENOENT) { 1002 res = error("Failed to stat " + _libsymlink); 1003 goto out; 1004 } 1005 } else { 1006 if (S_ISDIR(libStat.st_mode)) { 1007 if (delete_dir_contents(libsymlink, 1, NULL) < 0) { 1008 res = error("Failed to delete " + _libsymlink); 1009 goto out; 1010 } 1011 } else if (S_ISLNK(libStat.st_mode)) { 1012 if (unlink(libsymlink) < 0) { 1013 res = error("Failed to unlink " + _libsymlink); 1014 goto out; 1015 } 1016 } 1017 } 1018 1019 if (symlink(asecLibDir, libsymlink) < 0) { 1020 res = error("Failed to symlink " + _libsymlink + " to " + nativeLibPath32); 1021 goto out; 1022 } 1023 1024out: 1025 if (chmod(pkgdir, s.st_mode) < 0) { 1026 auto msg = "Failed to cleanup chmod " + _pkgdir; 1027 if (res.isOk()) { 1028 res = error(msg); 1029 } else { 1030 PLOG(ERROR) << msg; 1031 } 1032 } 1033 1034 if (chown(pkgdir, s.st_uid, s.st_gid) < 0) { 1035 auto msg = "Failed to cleanup chown " + _pkgdir; 1036 if (res.isOk()) { 1037 res = error(msg); 1038 } else { 1039 PLOG(ERROR) << msg; 1040 } 1041 } 1042 1043 return res; 1044} 1045 1046static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd) 1047{ 1048 static const char *IDMAP_BIN = "/system/bin/idmap"; 1049 static const size_t MAX_INT_LEN = 32; 1050 char idmap_str[MAX_INT_LEN]; 1051 1052 snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd); 1053 1054 execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL); 1055 ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno)); 1056} 1057 1058// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix) 1059// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap 1060static int flatten_path(const char *prefix, const char *suffix, 1061 const char *overlay_path, char *idmap_path, size_t N) 1062{ 1063 if (overlay_path == NULL || idmap_path == NULL) { 1064 return -1; 1065 } 1066 const size_t len_overlay_path = strlen(overlay_path); 1067 // will access overlay_path + 1 further below; requires absolute path 1068 if (len_overlay_path < 2 || *overlay_path != '/') { 1069 return -1; 1070 } 1071 const size_t len_idmap_root = strlen(prefix); 1072 const size_t len_suffix = strlen(suffix); 1073 if (SIZE_MAX - len_idmap_root < len_overlay_path || 1074 SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) { 1075 // additions below would cause overflow 1076 return -1; 1077 } 1078 if (N < len_idmap_root + len_overlay_path + len_suffix) { 1079 return -1; 1080 } 1081 memset(idmap_path, 0, N); 1082 snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix); 1083 char *ch = idmap_path + len_idmap_root; 1084 while (*ch != '\0') { 1085 if (*ch == '/') { 1086 *ch = '@'; 1087 } 1088 ++ch; 1089 } 1090 return 0; 1091} 1092 1093binder::Status InstalldNativeService::idmap(const std::string& targetApkPath, 1094 const std::string& overlayApkPath, int32_t uid) { 1095 ENFORCE_UID(AID_SYSTEM); 1096 const char* target_apk = targetApkPath.c_str(); 1097 const char* overlay_apk = overlayApkPath.c_str(); 1098 ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid); 1099 1100 int idmap_fd = -1; 1101 char idmap_path[PATH_MAX]; 1102 1103 if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk, 1104 idmap_path, sizeof(idmap_path)) == -1) { 1105 ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk); 1106 goto fail; 1107 } 1108 1109 unlink(idmap_path); 1110 idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644); 1111 if (idmap_fd < 0) { 1112 ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno)); 1113 goto fail; 1114 } 1115 if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) { 1116 ALOGE("idmap cannot chown '%s'\n", idmap_path); 1117 goto fail; 1118 } 1119 if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) { 1120 ALOGE("idmap cannot chmod '%s'\n", idmap_path); 1121 goto fail; 1122 } 1123 1124 pid_t pid; 1125 pid = fork(); 1126 if (pid == 0) { 1127 /* child -- drop privileges before continuing */ 1128 if (setgid(uid) != 0) { 1129 ALOGE("setgid(%d) failed during idmap\n", uid); 1130 exit(1); 1131 } 1132 if (setuid(uid) != 0) { 1133 ALOGE("setuid(%d) failed during idmap\n", uid); 1134 exit(1); 1135 } 1136 if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) { 1137 ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno)); 1138 exit(1); 1139 } 1140 1141 run_idmap(target_apk, overlay_apk, idmap_fd); 1142 exit(1); /* only if exec call to idmap failed */ 1143 } else { 1144 int status = wait_child(pid); 1145 if (status != 0) { 1146 ALOGE("idmap failed, status=0x%04x\n", status); 1147 goto fail; 1148 } 1149 } 1150 1151 close(idmap_fd); 1152 return ok(); 1153fail: 1154 if (idmap_fd >= 0) { 1155 close(idmap_fd); 1156 unlink(idmap_path); 1157 } 1158 return error(); 1159} 1160 1161binder::Status InstalldNativeService::restoreconAppData(const std::unique_ptr<std::string>& uuid, 1162 const std::string& packageName, int32_t userId, int32_t flags, int32_t appId, 1163 const std::string& seInfo) { 1164 ENFORCE_UID(AID_SYSTEM); 1165 CHECK_ARGUMENT_UUID(uuid); 1166 CHECK_ARGUMENT_PACKAGE_NAME(packageName); 1167 1168 binder::Status res = ok(); 1169 1170 // SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here. 1171 unsigned int seflags = SELINUX_ANDROID_RESTORECON_RECURSE; 1172 const char* uuid_ = uuid ? uuid->c_str() : nullptr; 1173 const char* pkgName = packageName.c_str(); 1174 const char* seinfo = seInfo.c_str(); 1175 1176 uid_t uid = multiuser_get_uid(userId, appId); 1177 if (flags & FLAG_STORAGE_CE) { 1178 auto path = create_data_user_ce_package_path(uuid_, userId, pkgName); 1179 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1180 res = error("restorecon failed for " + path); 1181 } 1182 } 1183 if (flags & FLAG_STORAGE_DE) { 1184 auto path = create_data_user_de_package_path(uuid_, userId, pkgName); 1185 if (selinux_android_restorecon_pkgdir(path.c_str(), seinfo, uid, seflags) < 0) { 1186 res = error("restorecon failed for " + path); 1187 } 1188 } 1189 return res; 1190} 1191 1192binder::Status InstalldNativeService::createOatDir(const std::string& oatDir, 1193 const std::string& instructionSet) { 1194 ENFORCE_UID(AID_SYSTEM); 1195 const char* oat_dir = oatDir.c_str(); 1196 const char* instruction_set = instructionSet.c_str(); 1197 char oat_instr_dir[PKG_PATH_MAX]; 1198 1199 if (validate_apk_path(oat_dir)) { 1200 return error("Invalid path " + oatDir); 1201 } 1202 if (fs_prepare_dir(oat_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1203 return error("Failed to prepare " + oatDir); 1204 } 1205 if (selinux_android_restorecon(oat_dir, 0)) { 1206 return error("Failed to restorecon " + oatDir); 1207 } 1208 snprintf(oat_instr_dir, PKG_PATH_MAX, "%s/%s", oat_dir, instruction_set); 1209 if (fs_prepare_dir(oat_instr_dir, S_IRWXU | S_IRWXG | S_IXOTH, AID_SYSTEM, AID_INSTALL)) { 1210 return error(StringPrintf("Failed to prepare %s", oat_instr_dir)); 1211 } 1212 return ok(); 1213} 1214 1215binder::Status InstalldNativeService::rmPackageDir(const std::string& packageDir) { 1216 ENFORCE_UID(AID_SYSTEM); 1217 if (validate_apk_path(packageDir.c_str())) { 1218 return error("Invalid path " + packageDir); 1219 } 1220 if (delete_dir_contents_and_dir(packageDir) != 0) { 1221 return error("Failed to delete " + packageDir); 1222 } 1223 return ok(); 1224} 1225 1226binder::Status InstalldNativeService::linkFile(const std::string& relativePath, 1227 const std::string& fromBase, const std::string& toBase) { 1228 ENFORCE_UID(AID_SYSTEM); 1229 const char* relative_path = relativePath.c_str(); 1230 const char* from_base = fromBase.c_str(); 1231 const char* to_base = toBase.c_str(); 1232 char from_path[PKG_PATH_MAX]; 1233 char to_path[PKG_PATH_MAX]; 1234 snprintf(from_path, PKG_PATH_MAX, "%s/%s", from_base, relative_path); 1235 snprintf(to_path, PKG_PATH_MAX, "%s/%s", to_base, relative_path); 1236 1237 if (validate_apk_path_subdirs(from_path)) { 1238 return error(StringPrintf("Invalid from path %s", from_path)); 1239 } 1240 1241 if (validate_apk_path_subdirs(to_path)) { 1242 return error(StringPrintf("Invalid to path %s", to_path)); 1243 } 1244 1245 if (link(from_path, to_path) < 0) { 1246 return error(StringPrintf("Failed to link from %s to %s", from_path, to_path)); 1247 } 1248 1249 return ok(); 1250} 1251 1252binder::Status InstalldNativeService::moveAb(const std::string& apkPath, 1253 const std::string& instructionSet, const std::string& outputPath) { 1254 ENFORCE_UID(AID_SYSTEM); 1255 1256 const char* apk_path = apkPath.c_str(); 1257 const char* instruction_set = instructionSet.c_str(); 1258 const char* oat_dir = outputPath.c_str(); 1259 1260 bool success = move_ab(apk_path, instruction_set, oat_dir); 1261 return success ? ok() : error(); 1262} 1263 1264binder::Status InstalldNativeService::deleteOdex(const std::string& apkPath, 1265 const std::string& instructionSet, const std::string& outputPath) { 1266 ENFORCE_UID(AID_SYSTEM); 1267 1268 const char* apk_path = apkPath.c_str(); 1269 const char* instruction_set = instructionSet.c_str(); 1270 const char* oat_dir = outputPath.c_str(); 1271 1272 bool res = delete_odex(apk_path, instruction_set, oat_dir); 1273 return res ? ok() : error(); 1274} 1275 1276} // namespace installd 1277} // namespace android 1278