1 /* 2 * Copyright (C) 2015 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 "Utils.h" 18 19 #include "Process.h" 20 #include "sehandle.h" 21 22 #include <android-base/file.h> 23 #include <android-base/logging.h> 24 #include <android-base/properties.h> 25 #include <android-base/strings.h> 26 #include <android-base/stringprintf.h> 27 #include <cutils/fs.h> 28 #include <logwrap/logwrap.h> 29 #include <private/android_filesystem_config.h> 30 31 #include <mutex> 32 #include <dirent.h> 33 #include <fcntl.h> 34 #include <linux/fs.h> 35 #include <stdlib.h> 36 #include <sys/mount.h> 37 #include <sys/types.h> 38 #include <sys/stat.h> 39 #include <sys/sysmacros.h> 40 #include <sys/wait.h> 41 #include <sys/statvfs.h> 42 43 #ifndef UMOUNT_NOFOLLOW 44 #define UMOUNT_NOFOLLOW 0x00000008 /* Don't follow symlink on umount */ 45 #endif 46 47 using android::base::ReadFileToString; 48 using android::base::StringPrintf; 49 50 namespace android { 51 namespace vold { 52 53 security_context_t sBlkidContext = nullptr; 54 security_context_t sBlkidUntrustedContext = nullptr; 55 security_context_t sFsckContext = nullptr; 56 security_context_t sFsckUntrustedContext = nullptr; 57 58 bool sSleepOnUnmount = true; 59 60 static const char* kBlkidPath = "/system/bin/blkid"; 61 static const char* kKeyPath = "/data/misc/vold"; 62 63 static const char* kProcFilesystems = "/proc/filesystems"; 64 65 // Lock used to protect process-level SELinux changes from racing with each 66 // other between multiple threads. 67 static std::mutex kSecurityLock; 68 69 status_t CreateDeviceNode(const std::string& path, dev_t dev) { 70 std::lock_guard<std::mutex> lock(kSecurityLock); 71 const char* cpath = path.c_str(); 72 status_t res = 0; 73 74 char* secontext = nullptr; 75 if (sehandle) { 76 if (!selabel_lookup(sehandle, &secontext, cpath, S_IFBLK)) { 77 setfscreatecon(secontext); 78 } 79 } 80 81 mode_t mode = 0660 | S_IFBLK; 82 if (mknod(cpath, mode, dev) < 0) { 83 if (errno != EEXIST) { 84 PLOG(ERROR) << "Failed to create device node for " << major(dev) 85 << ":" << minor(dev) << " at " << path; 86 res = -errno; 87 } 88 } 89 90 if (secontext) { 91 setfscreatecon(nullptr); 92 freecon(secontext); 93 } 94 95 return res; 96 } 97 98 status_t DestroyDeviceNode(const std::string& path) { 99 const char* cpath = path.c_str(); 100 if (TEMP_FAILURE_RETRY(unlink(cpath))) { 101 return -errno; 102 } else { 103 return OK; 104 } 105 } 106 107 status_t PrepareDir(const std::string& path, mode_t mode, uid_t uid, gid_t gid) { 108 std::lock_guard<std::mutex> lock(kSecurityLock); 109 const char* cpath = path.c_str(); 110 111 char* secontext = nullptr; 112 if (sehandle) { 113 if (!selabel_lookup(sehandle, &secontext, cpath, S_IFDIR)) { 114 setfscreatecon(secontext); 115 } 116 } 117 118 int res = fs_prepare_dir(cpath, mode, uid, gid); 119 120 if (secontext) { 121 setfscreatecon(nullptr); 122 freecon(secontext); 123 } 124 125 if (res == 0) { 126 return OK; 127 } else { 128 return -errno; 129 } 130 } 131 132 status_t ForceUnmount(const std::string& path) { 133 const char* cpath = path.c_str(); 134 if (!umount2(cpath, UMOUNT_NOFOLLOW) || errno == EINVAL || errno == ENOENT) { 135 return OK; 136 } 137 // Apps might still be handling eject request, so wait before 138 // we start sending signals 139 if (sSleepOnUnmount) sleep(5); 140 141 KillProcessesWithOpenFiles(path, SIGINT); 142 if (sSleepOnUnmount) sleep(5); 143 if (!umount2(cpath, UMOUNT_NOFOLLOW) || errno == EINVAL || errno == ENOENT) { 144 return OK; 145 } 146 147 KillProcessesWithOpenFiles(path, SIGTERM); 148 if (sSleepOnUnmount) sleep(5); 149 if (!umount2(cpath, UMOUNT_NOFOLLOW) || errno == EINVAL || errno == ENOENT) { 150 return OK; 151 } 152 153 KillProcessesWithOpenFiles(path, SIGKILL); 154 if (sSleepOnUnmount) sleep(5); 155 if (!umount2(cpath, UMOUNT_NOFOLLOW) || errno == EINVAL || errno == ENOENT) { 156 return OK; 157 } 158 159 return -errno; 160 } 161 162 status_t KillProcessesUsingPath(const std::string& path) { 163 if (KillProcessesWithOpenFiles(path, SIGINT) == 0) { 164 return OK; 165 } 166 if (sSleepOnUnmount) sleep(5); 167 168 if (KillProcessesWithOpenFiles(path, SIGTERM) == 0) { 169 return OK; 170 } 171 if (sSleepOnUnmount) sleep(5); 172 173 if (KillProcessesWithOpenFiles(path, SIGKILL) == 0) { 174 return OK; 175 } 176 if (sSleepOnUnmount) sleep(5); 177 178 // Send SIGKILL a second time to determine if we've 179 // actually killed everyone with open files 180 if (KillProcessesWithOpenFiles(path, SIGKILL) == 0) { 181 return OK; 182 } 183 PLOG(ERROR) << "Failed to kill processes using " << path; 184 return -EBUSY; 185 } 186 187 status_t BindMount(const std::string& source, const std::string& target) { 188 if (::mount(source.c_str(), target.c_str(), "", MS_BIND, NULL)) { 189 PLOG(ERROR) << "Failed to bind mount " << source << " to " << target; 190 return -errno; 191 } 192 return OK; 193 } 194 195 bool FindValue(const std::string& raw, const std::string& key, std::string* value) { 196 auto qual = key + "=\""; 197 auto start = raw.find(qual); 198 if (start > 0 && raw[start - 1] != ' ') { 199 start = raw.find(qual, start + 1); 200 } 201 202 if (start == std::string::npos) return false; 203 start += qual.length(); 204 205 auto end = raw.find("\"", start); 206 if (end == std::string::npos) return false; 207 208 *value = raw.substr(start, end - start); 209 return true; 210 } 211 212 static status_t readMetadata(const std::string& path, std::string* fsType, 213 std::string* fsUuid, std::string* fsLabel, bool untrusted) { 214 fsType->clear(); 215 fsUuid->clear(); 216 fsLabel->clear(); 217 218 std::vector<std::string> cmd; 219 cmd.push_back(kBlkidPath); 220 cmd.push_back("-c"); 221 cmd.push_back("/dev/null"); 222 cmd.push_back("-s"); 223 cmd.push_back("TYPE"); 224 cmd.push_back("-s"); 225 cmd.push_back("UUID"); 226 cmd.push_back("-s"); 227 cmd.push_back("LABEL"); 228 cmd.push_back(path); 229 230 std::vector<std::string> output; 231 status_t res = ForkExecvp(cmd, output, untrusted ? sBlkidUntrustedContext : sBlkidContext); 232 if (res != OK) { 233 LOG(WARNING) << "blkid failed to identify " << path; 234 return res; 235 } 236 237 for (const auto& line : output) { 238 // Extract values from blkid output, if defined 239 FindValue(line, "TYPE", fsType); 240 FindValue(line, "UUID", fsUuid); 241 FindValue(line, "LABEL", fsLabel); 242 } 243 244 return OK; 245 } 246 247 status_t ReadMetadata(const std::string& path, std::string* fsType, 248 std::string* fsUuid, std::string* fsLabel) { 249 return readMetadata(path, fsType, fsUuid, fsLabel, false); 250 } 251 252 status_t ReadMetadataUntrusted(const std::string& path, std::string* fsType, 253 std::string* fsUuid, std::string* fsLabel) { 254 return readMetadata(path, fsType, fsUuid, fsLabel, true); 255 } 256 257 status_t ForkExecvp(const std::vector<std::string>& args) { 258 return ForkExecvp(args, nullptr); 259 } 260 261 status_t ForkExecvp(const std::vector<std::string>& args, security_context_t context) { 262 std::lock_guard<std::mutex> lock(kSecurityLock); 263 size_t argc = args.size(); 264 char** argv = (char**) calloc(argc, sizeof(char*)); 265 for (size_t i = 0; i < argc; i++) { 266 argv[i] = (char*) args[i].c_str(); 267 if (i == 0) { 268 LOG(VERBOSE) << args[i]; 269 } else { 270 LOG(VERBOSE) << " " << args[i]; 271 } 272 } 273 274 if (context) { 275 if (setexeccon(context)) { 276 LOG(ERROR) << "Failed to setexeccon"; 277 abort(); 278 } 279 } 280 status_t res = android_fork_execvp(argc, argv, NULL, false, true); 281 if (context) { 282 if (setexeccon(nullptr)) { 283 LOG(ERROR) << "Failed to setexeccon"; 284 abort(); 285 } 286 } 287 288 free(argv); 289 return res; 290 } 291 292 status_t ForkExecvp(const std::vector<std::string>& args, 293 std::vector<std::string>& output) { 294 return ForkExecvp(args, output, nullptr); 295 } 296 297 status_t ForkExecvp(const std::vector<std::string>& args, 298 std::vector<std::string>& output, security_context_t context) { 299 std::lock_guard<std::mutex> lock(kSecurityLock); 300 std::string cmd; 301 for (size_t i = 0; i < args.size(); i++) { 302 cmd += args[i] + " "; 303 if (i == 0) { 304 LOG(VERBOSE) << args[i]; 305 } else { 306 LOG(VERBOSE) << " " << args[i]; 307 } 308 } 309 output.clear(); 310 311 if (context) { 312 if (setexeccon(context)) { 313 LOG(ERROR) << "Failed to setexeccon"; 314 abort(); 315 } 316 } 317 FILE* fp = popen(cmd.c_str(), "r"); // NOLINT 318 if (context) { 319 if (setexeccon(nullptr)) { 320 LOG(ERROR) << "Failed to setexeccon"; 321 abort(); 322 } 323 } 324 325 if (!fp) { 326 PLOG(ERROR) << "Failed to popen " << cmd; 327 return -errno; 328 } 329 char line[1024]; 330 while (fgets(line, sizeof(line), fp) != nullptr) { 331 LOG(VERBOSE) << line; 332 output.push_back(std::string(line)); 333 } 334 if (pclose(fp) != 0) { 335 PLOG(ERROR) << "Failed to pclose " << cmd; 336 return -errno; 337 } 338 339 return OK; 340 } 341 342 pid_t ForkExecvpAsync(const std::vector<std::string>& args) { 343 size_t argc = args.size(); 344 char** argv = (char**) calloc(argc + 1, sizeof(char*)); 345 for (size_t i = 0; i < argc; i++) { 346 argv[i] = (char*) args[i].c_str(); 347 if (i == 0) { 348 LOG(VERBOSE) << args[i]; 349 } else { 350 LOG(VERBOSE) << " " << args[i]; 351 } 352 } 353 354 pid_t pid = fork(); 355 if (pid == 0) { 356 close(STDIN_FILENO); 357 close(STDOUT_FILENO); 358 close(STDERR_FILENO); 359 360 if (execvp(argv[0], argv)) { 361 PLOG(ERROR) << "Failed to exec"; 362 } 363 364 _exit(1); 365 } 366 367 if (pid == -1) { 368 PLOG(ERROR) << "Failed to exec"; 369 } 370 371 free(argv); 372 return pid; 373 } 374 375 status_t ReadRandomBytes(size_t bytes, std::string& out) { 376 out.resize(bytes); 377 return ReadRandomBytes(bytes, &out[0]); 378 } 379 380 status_t ReadRandomBytes(size_t bytes, char* buf) { 381 int fd = TEMP_FAILURE_RETRY(open("/dev/urandom", O_RDONLY | O_CLOEXEC | O_NOFOLLOW)); 382 if (fd == -1) { 383 return -errno; 384 } 385 386 size_t n; 387 while ((n = TEMP_FAILURE_RETRY(read(fd, &buf[0], bytes))) > 0) { 388 bytes -= n; 389 buf += n; 390 } 391 close(fd); 392 393 if (bytes == 0) { 394 return OK; 395 } else { 396 return -EIO; 397 } 398 } 399 400 status_t GenerateRandomUuid(std::string& out) { 401 status_t res = ReadRandomBytes(16, out); 402 if (res == OK) { 403 out[6] &= 0x0f; /* clear version */ 404 out[6] |= 0x40; /* set to version 4 */ 405 out[8] &= 0x3f; /* clear variant */ 406 out[8] |= 0x80; /* set to IETF variant */ 407 } 408 return res; 409 } 410 411 status_t HexToStr(const std::string& hex, std::string& str) { 412 str.clear(); 413 bool even = true; 414 char cur = 0; 415 for (size_t i = 0; i < hex.size(); i++) { 416 int val = 0; 417 switch (hex[i]) { 418 case ' ': case '-': case ':': continue; 419 case 'f': case 'F': val = 15; break; 420 case 'e': case 'E': val = 14; break; 421 case 'd': case 'D': val = 13; break; 422 case 'c': case 'C': val = 12; break; 423 case 'b': case 'B': val = 11; break; 424 case 'a': case 'A': val = 10; break; 425 case '9': val = 9; break; 426 case '8': val = 8; break; 427 case '7': val = 7; break; 428 case '6': val = 6; break; 429 case '5': val = 5; break; 430 case '4': val = 4; break; 431 case '3': val = 3; break; 432 case '2': val = 2; break; 433 case '1': val = 1; break; 434 case '0': val = 0; break; 435 default: return -EINVAL; 436 } 437 438 if (even) { 439 cur = val << 4; 440 } else { 441 cur += val; 442 str.push_back(cur); 443 cur = 0; 444 } 445 even = !even; 446 } 447 return even ? OK : -EINVAL; 448 } 449 450 static const char* kLookup = "0123456789abcdef"; 451 452 status_t StrToHex(const std::string& str, std::string& hex) { 453 hex.clear(); 454 for (size_t i = 0; i < str.size(); i++) { 455 hex.push_back(kLookup[(str[i] & 0xF0) >> 4]); 456 hex.push_back(kLookup[str[i] & 0x0F]); 457 } 458 return OK; 459 } 460 461 status_t StrToHex(const KeyBuffer& str, KeyBuffer& hex) { 462 hex.clear(); 463 for (size_t i = 0; i < str.size(); i++) { 464 hex.push_back(kLookup[(str.data()[i] & 0xF0) >> 4]); 465 hex.push_back(kLookup[str.data()[i] & 0x0F]); 466 } 467 return OK; 468 } 469 470 status_t NormalizeHex(const std::string& in, std::string& out) { 471 std::string tmp; 472 if (HexToStr(in, tmp)) { 473 return -EINVAL; 474 } 475 return StrToHex(tmp, out); 476 } 477 478 uint64_t GetFreeBytes(const std::string& path) { 479 struct statvfs sb; 480 if (statvfs(path.c_str(), &sb) == 0) { 481 return (uint64_t) sb.f_bavail * sb.f_frsize; 482 } else { 483 return -1; 484 } 485 } 486 487 // TODO: borrowed from frameworks/native/libs/diskusage/ which should 488 // eventually be migrated into system/ 489 static int64_t stat_size(struct stat *s) { 490 int64_t blksize = s->st_blksize; 491 // count actual blocks used instead of nominal file size 492 int64_t size = s->st_blocks * 512; 493 494 if (blksize) { 495 /* round up to filesystem block size */ 496 size = (size + blksize - 1) & (~(blksize - 1)); 497 } 498 499 return size; 500 } 501 502 // TODO: borrowed from frameworks/native/libs/diskusage/ which should 503 // eventually be migrated into system/ 504 int64_t calculate_dir_size(int dfd) { 505 int64_t size = 0; 506 struct stat s; 507 DIR *d; 508 struct dirent *de; 509 510 d = fdopendir(dfd); 511 if (d == NULL) { 512 close(dfd); 513 return 0; 514 } 515 516 while ((de = readdir(d))) { 517 const char *name = de->d_name; 518 if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) { 519 size += stat_size(&s); 520 } 521 if (de->d_type == DT_DIR) { 522 int subfd; 523 524 /* always skip "." and ".." */ 525 if (name[0] == '.') { 526 if (name[1] == 0) 527 continue; 528 if ((name[1] == '.') && (name[2] == 0)) 529 continue; 530 } 531 532 subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_CLOEXEC); 533 if (subfd >= 0) { 534 size += calculate_dir_size(subfd); 535 } 536 } 537 } 538 closedir(d); 539 return size; 540 } 541 542 uint64_t GetTreeBytes(const std::string& path) { 543 int dirfd = open(path.c_str(), O_RDONLY | O_DIRECTORY | O_CLOEXEC); 544 if (dirfd < 0) { 545 PLOG(WARNING) << "Failed to open " << path; 546 return -1; 547 } else { 548 uint64_t res = calculate_dir_size(dirfd); 549 close(dirfd); 550 return res; 551 } 552 } 553 554 bool IsFilesystemSupported(const std::string& fsType) { 555 std::string supported; 556 if (!ReadFileToString(kProcFilesystems, &supported)) { 557 PLOG(ERROR) << "Failed to read supported filesystems"; 558 return false; 559 } 560 return supported.find(fsType + "\n") != std::string::npos; 561 } 562 563 status_t WipeBlockDevice(const std::string& path) { 564 status_t res = -1; 565 const char* c_path = path.c_str(); 566 unsigned long nr_sec = 0; 567 unsigned long long range[2]; 568 569 int fd = TEMP_FAILURE_RETRY(open(c_path, O_RDWR | O_CLOEXEC)); 570 if (fd == -1) { 571 PLOG(ERROR) << "Failed to open " << path; 572 goto done; 573 } 574 575 if ((ioctl(fd, BLKGETSIZE, &nr_sec)) == -1) { 576 PLOG(ERROR) << "Failed to determine size of " << path; 577 goto done; 578 } 579 580 range[0] = 0; 581 range[1] = (unsigned long long) nr_sec * 512; 582 583 LOG(INFO) << "About to discard " << range[1] << " on " << path; 584 if (ioctl(fd, BLKDISCARD, &range) == 0) { 585 LOG(INFO) << "Discard success on " << path; 586 res = 0; 587 } else { 588 PLOG(ERROR) << "Discard failure on " << path; 589 } 590 591 done: 592 close(fd); 593 return res; 594 } 595 596 static bool isValidFilename(const std::string& name) { 597 if (name.empty() || (name == ".") || (name == "..") 598 || (name.find('/') != std::string::npos)) { 599 return false; 600 } else { 601 return true; 602 } 603 } 604 605 std::string BuildKeyPath(const std::string& partGuid) { 606 return StringPrintf("%s/expand_%s.key", kKeyPath, partGuid.c_str()); 607 } 608 609 std::string BuildDataSystemLegacyPath(userid_t userId) { 610 return StringPrintf("%s/system/users/%u", BuildDataPath("").c_str(), userId); 611 } 612 613 std::string BuildDataSystemCePath(userid_t userId) { 614 return StringPrintf("%s/system_ce/%u", BuildDataPath("").c_str(), userId); 615 } 616 617 std::string BuildDataSystemDePath(userid_t userId) { 618 return StringPrintf("%s/system_de/%u", BuildDataPath("").c_str(), userId); 619 } 620 621 std::string BuildDataMiscLegacyPath(userid_t userId) { 622 return StringPrintf("%s/misc/user/%u", BuildDataPath("").c_str(), userId); 623 } 624 625 std::string BuildDataMiscCePath(userid_t userId) { 626 return StringPrintf("%s/misc_ce/%u", BuildDataPath("").c_str(), userId); 627 } 628 629 std::string BuildDataMiscDePath(userid_t userId) { 630 return StringPrintf("%s/misc_de/%u", BuildDataPath("").c_str(), userId); 631 } 632 633 // Keep in sync with installd (frameworks/native/cmds/installd/utils.h) 634 std::string BuildDataProfilesDePath(userid_t userId) { 635 return StringPrintf("%s/misc/profiles/cur/%u", BuildDataPath("").c_str(), userId); 636 } 637 638 std::string BuildDataVendorCePath(userid_t userId) { 639 return StringPrintf("%s/vendor_ce/%u", BuildDataPath("").c_str(), userId); 640 } 641 642 std::string BuildDataVendorDePath(userid_t userId) { 643 return StringPrintf("%s/vendor_de/%u", BuildDataPath("").c_str(), userId); 644 } 645 646 std::string BuildDataPath(const std::string& volumeUuid) { 647 // TODO: unify with installd path generation logic 648 if (volumeUuid.empty()) { 649 return "/data"; 650 } else { 651 CHECK(isValidFilename(volumeUuid)); 652 return StringPrintf("/mnt/expand/%s", volumeUuid.c_str()); 653 } 654 } 655 656 std::string BuildDataMediaCePath(const std::string& volumeUuid, userid_t userId) { 657 // TODO: unify with installd path generation logic 658 std::string data(BuildDataPath(volumeUuid)); 659 return StringPrintf("%s/media/%u", data.c_str(), userId); 660 } 661 662 std::string BuildDataUserCePath(const std::string& volumeUuid, userid_t userId) { 663 // TODO: unify with installd path generation logic 664 std::string data(BuildDataPath(volumeUuid)); 665 if (volumeUuid.empty() && userId == 0) { 666 std::string legacy = StringPrintf("%s/data", data.c_str()); 667 struct stat sb; 668 if (lstat(legacy.c_str(), &sb) == 0 && S_ISDIR(sb.st_mode)) { 669 /* /data/data is dir, return /data/data for legacy system */ 670 return legacy; 671 } 672 } 673 return StringPrintf("%s/user/%u", data.c_str(), userId); 674 } 675 676 std::string BuildDataUserDePath(const std::string& volumeUuid, userid_t userId) { 677 // TODO: unify with installd path generation logic 678 std::string data(BuildDataPath(volumeUuid)); 679 return StringPrintf("%s/user_de/%u", data.c_str(), userId); 680 } 681 682 dev_t GetDevice(const std::string& path) { 683 struct stat sb; 684 if (stat(path.c_str(), &sb)) { 685 PLOG(WARNING) << "Failed to stat " << path; 686 return 0; 687 } else { 688 return sb.st_dev; 689 } 690 } 691 692 status_t RestoreconRecursive(const std::string& path) { 693 LOG(VERBOSE) << "Starting restorecon of " << path; 694 695 static constexpr const char* kRestoreconString = "selinux.restorecon_recursive"; 696 697 android::base::SetProperty(kRestoreconString, ""); 698 android::base::SetProperty(kRestoreconString, path); 699 700 android::base::WaitForProperty(kRestoreconString, path); 701 702 LOG(VERBOSE) << "Finished restorecon of " << path; 703 return OK; 704 } 705 706 bool Readlinkat(int dirfd, const std::string& path, std::string* result) { 707 // Shamelessly borrowed from android::base::Readlink() 708 result->clear(); 709 710 // Most Linux file systems (ext2 and ext4, say) limit symbolic links to 711 // 4095 bytes. Since we'll copy out into the string anyway, it doesn't 712 // waste memory to just start there. We add 1 so that we can recognize 713 // whether it actually fit (rather than being truncated to 4095). 714 std::vector<char> buf(4095 + 1); 715 while (true) { 716 ssize_t size = readlinkat(dirfd, path.c_str(), &buf[0], buf.size()); 717 // Unrecoverable error? 718 if (size == -1) 719 return false; 720 // It fit! (If size == buf.size(), it may have been truncated.) 721 if (static_cast<size_t>(size) < buf.size()) { 722 result->assign(&buf[0], size); 723 return true; 724 } 725 // Double our buffer and try again. 726 buf.resize(buf.size() * 2); 727 } 728 } 729 730 bool IsRunningInEmulator() { 731 return android::base::GetBoolProperty("ro.kernel.qemu", false); 732 } 733 734 } // namespace vold 735 } // namespace android 736
