CommandListener.cpp

   1 /*
   2  * Copyright (C) 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 <stdlib.h>
  18 #include <sys/socket.h>
  19 #include <sys/types.h>
  20 #include <netinet/in.h>
  21 #include <arpa/inet.h>
  22 #include <dirent.h>
  23 #include <errno.h>
  24 #include <fcntl.h>
  25 #include <string.h>
  26
  27 #define LOG_TAG "VoldCmdListener"
  28 #include <cutils/log.h>
  29
  30 #include <sysutils/SocketClient.h>
  31 #include <private/android_filesystem_config.h>
  32
  33 #include "CommandListener.h"
  34 #include "VolumeManager.h"
  35 #include "ResponseCode.h"
  36 #include "Process.h"
  37 #include "Xwarp.h"
  38 #include "Loop.h"
  39 #include "Devmapper.h"
  40 #include "cryptfs.h"
  41
  42 #define DUMP_ARGS 0
  43
  44 CommandListener::CommandListener() :
  45                  FrameworkListener("vold", true) {
  46     registerCmd(new DumpCmd());
  47     registerCmd(new VolumeCmd());
  48     registerCmd(new AsecCmd());
  49     registerCmd(new ObbCmd());
  50     registerCmd(new StorageCmd());
  51     registerCmd(new XwarpCmd());
  52     registerCmd(new CryptfsCmd());
  53 }
  54
  55 void CommandListener::dumpArgs(int argc, char **argv, int argObscure) {
  56 #if DUMP_ARGS
  57     char buffer[4096];
  58     char *p = buffer;
  59
  60     memset(buffer, 0, sizeof(buffer));
  61     int i;
  62     for (i = 0; i < argc; i++) {
  63         unsigned int len = strlen(argv[i]) + 1; // Account for space
  64         if (i == argObscure) {
  65             len += 2; // Account for {}
  66         }
  67         if (((p - buffer) + len) < (sizeof(buffer)-1)) {
  68             if (i == argObscure) {
  69                 *p++ = '{';
  70                 *p++ = '}';
  71                 *p++ = ' ';
  72                 continue;
  73             }
  74             strcpy(p, argv[i]);
  75             p+= strlen(argv[i]);
  76             if (i != (argc -1)) {
  77                 *p++ = ' ';
  78             }
  79         }
  80     }
  81     SLOGD("%s", buffer);
  82 #endif
  83 }
  84
  85 CommandListener::DumpCmd::DumpCmd() :
  86                  VoldCommand("dump") {
  87 }
  88
  89 int CommandListener::DumpCmd::runCommand(SocketClient *cli,
  90                                          int argc, char **argv) {
  91     cli->sendMsg(0, "Dumping loop status", false);
  92     if (Loop::dumpState(cli)) {
  93         cli->sendMsg(ResponseCode::CommandOkay, "Loop dump failed", true);
  94     }
  95     cli->sendMsg(0, "Dumping DM status", false);
  96     if (Devmapper::dumpState(cli)) {
  97         cli->sendMsg(ResponseCode::CommandOkay, "Devmapper dump failed", true);
  98     }
  99     cli->sendMsg(0, "Dumping mounted filesystems", false);
 100     FILE *fp = fopen("/proc/mounts", "r");
 101     if (fp) {
 102         char line[1024];
 103         while (fgets(line, sizeof(line), fp)) {
 104             line[strlen(line)-1] = '\0';
 105             cli->sendMsg(0, line, false);;
 106         }
 107         fclose(fp);
 108     }
 109
 110     cli->sendMsg(ResponseCode::CommandOkay, "dump complete", false);
 111     return 0;
 112 }
 113
 114
 115 CommandListener::VolumeCmd::VolumeCmd() :
 116                  VoldCommand("volume") {
 117 }
 118
 119 int CommandListener::VolumeCmd::runCommand(SocketClient *cli,
 120                                                       int argc, char **argv) {
 121     dumpArgs(argc, argv, -1);
 122
 123     if (argc < 2) {
 124         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
 125         return 0;
 126     }
 127
 128     VolumeManager *vm = VolumeManager::Instance();
 129     int rc = 0;
 130
 131     if (!strcmp(argv[1], "list")) {
 132         return vm->listVolumes(cli);
 133     } else if (!strcmp(argv[1], "debug")) {
 134         if (argc != 3 || (argc == 3 && (strcmp(argv[2], "off") && strcmp(argv[2], "on")))) {
 135             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume debug <off/on>", false);
 136             return 0;
 137         }
 138         vm->setDebug(!strcmp(argv[2], "on") ? true : false);
 139     } else if (!strcmp(argv[1], "mount")) {
 140         if (argc != 3) {
 141             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume mount <path>", false);
 142             return 0;
 143         }
 144         rc = vm->mountVolume(argv[2]);
 145     } else if (!strcmp(argv[1], "unmount")) {
 146         if (argc < 3 || argc > 4 ||
 147            ((argc == 4 && strcmp(argv[3], "force")) &&
 148             (argc == 4 && strcmp(argv[3], "force_and_revert")))) {
 149             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume unmount <path> [force|force_and_revert]", false);
 150             return 0;
 151         }
 152
 153         bool force = false;
 154         bool revert = false;
 155         if (argc >= 4 && !strcmp(argv[3], "force")) {
 156             force = true;
 157         } else if (argc >= 4 && !strcmp(argv[3], "force_and_revert")) {
 158             force = true;
 159             revert = true;
 160         }
 161         rc = vm->unmountVolume(argv[2], force, revert);
 162     } else if (!strcmp(argv[1], "format")) {
 163         if (argc != 3) {
 164             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: volume format <path>", false);
 165             return 0;
 166         }
 167         rc = vm->formatVolume(argv[2]);
 168     } else if (!strcmp(argv[1], "share")) {
 169         if (argc != 4) {
 170             cli->sendMsg(ResponseCode::CommandSyntaxError,
 171                     "Usage: volume share <path> <method>", false);
 172             return 0;
 173         }
 174         rc = vm->shareVolume(argv[2], argv[3]);
 175     } else if (!strcmp(argv[1], "unshare")) {
 176         if (argc != 4) {
 177             cli->sendMsg(ResponseCode::CommandSyntaxError,
 178                     "Usage: volume unshare <path> <method>", false);
 179             return 0;
 180         }
 181         rc = vm->unshareVolume(argv[2], argv[3]);
 182     } else if (!strcmp(argv[1], "shared")) {
 183         bool enabled = false;
 184         if (argc != 4) {
 185             cli->sendMsg(ResponseCode::CommandSyntaxError,
 186                     "Usage: volume shared <path> <method>", false);
 187             return 0;
 188         }
 189
 190         if (vm->shareEnabled(argv[2], argv[3], &enabled)) {
 191             cli->sendMsg(
 192                     ResponseCode::OperationFailed, "Failed to determine share enable state", true);
 193         } else {
 194             cli->sendMsg(ResponseCode::ShareEnabledResult,
 195                     (enabled ? "Share enabled" : "Share disabled"), false);
 196         }
 197         return 0;
 198     } else {
 199         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown volume cmd", false);
 200     }
 201
 202     if (!rc) {
 203         cli->sendMsg(ResponseCode::CommandOkay, "volume operation succeeded", false);
 204     } else {
 205         int erno = errno;
 206         rc = ResponseCode::convertFromErrno();
 207         cli->sendMsg(rc, "volume operation failed", true);
 208     }
 209
 210     return 0;
 211 }
 212
 213 CommandListener::StorageCmd::StorageCmd() :
 214                  VoldCommand("storage") {
 215 }
 216
 217 int CommandListener::StorageCmd::runCommand(SocketClient *cli,
 218                                                       int argc, char **argv) {
 219     dumpArgs(argc, argv, -1);
 220
 221     if (argc < 2) {
 222         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
 223         return 0;
 224     }
 225
 226     if (!strcmp(argv[1], "users")) {
 227         DIR *dir;
 228         struct dirent *de;
 229
 230         if (!(dir = opendir("/proc"))) {
 231             cli->sendMsg(ResponseCode::OperationFailed, "Failed to open /proc", true);
 232             return 0;
 233         }
 234
 235         while ((de = readdir(dir))) {
 236             int pid = Process::getPid(de->d_name);
 237
 238             if (pid < 0) {
 239                 continue;
 240             }
 241
 242             char processName[255];
 243             Process::getProcessName(pid, processName, sizeof(processName));
 244
 245             if (Process::checkFileDescriptorSymLinks(pid, argv[2]) ||
 246                 Process::checkFileMaps(pid, argv[2]) ||
 247                 Process::checkSymLink(pid, argv[2], "cwd") ||
 248                 Process::checkSymLink(pid, argv[2], "root") ||
 249                 Process::checkSymLink(pid, argv[2], "exe")) {
 250
 251                 char msg[1024];
 252                 snprintf(msg, sizeof(msg), "%d %s", pid, processName);
 253                 cli->sendMsg(ResponseCode::StorageUsersListResult, msg, false);
 254             }
 255         }
 256         closedir(dir);
 257         cli->sendMsg(ResponseCode::CommandOkay, "Storage user list complete", false);
 258     } else {
 259         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown storage cmd", false);
 260     }
 261     return 0;
 262 }
 263
 264 CommandListener::AsecCmd::AsecCmd() :
 265                  VoldCommand("asec") {
 266 }
 267
 268 void CommandListener::AsecCmd::listAsecsInDirectory(SocketClient *cli, const char *directory) {
 269     DIR *d = opendir(directory);
 270
 271     if (!d) {
 272         cli->sendMsg(ResponseCode::OperationFailed, "Failed to open asec dir", true);
 273         return;
 274     }
 275
 276     size_t dirent_len = offsetof(struct dirent, d_name) +
 277             pathconf(directory, _PC_NAME_MAX) + 1;
 278
 279     struct dirent *dent = (struct dirent *) malloc(dirent_len);
 280     if (dent == NULL) {
 281         cli->sendMsg(ResponseCode::OperationFailed, "Failed to allocate memory", true);
 282         return;
 283     }
 284
 285     struct dirent *result;
 286
 287     while (!readdir_r(d, dent, &result) && result != NULL) {
 288         if (dent->d_name[0] == '.')
 289             continue;
 290         if (dent->d_type != DT_REG)
 291             continue;
 292         size_t name_len = strlen(dent->d_name);
 293         if (name_len > 5 && name_len < 260 &&
 294                 !strcmp(&dent->d_name[name_len - 5], ".asec")) {
 295             char id[255];
 296             memset(id, 0, sizeof(id));
 297             strlcpy(id, dent->d_name, name_len - 4);
 298             cli->sendMsg(ResponseCode::AsecListResult, id, false);
 299         }
 300     }
 301     closedir(d);
 302
 303     free(dent);
 304 }
 305
 306 int CommandListener::AsecCmd::runCommand(SocketClient *cli,
 307                                                       int argc, char **argv) {
 308     if (argc < 2) {
 309         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
 310         return 0;
 311     }
 312
 313     VolumeManager *vm = VolumeManager::Instance();
 314     int rc = 0;
 315
 316     if (!strcmp(argv[1], "list")) {
 317         dumpArgs(argc, argv, -1);
 318
 319         listAsecsInDirectory(cli, Volume::SEC_ASECDIR_EXT);
 320         listAsecsInDirectory(cli, Volume::SEC_ASECDIR_INT);
 321     } else if (!strcmp(argv[1], "create")) {
 322         dumpArgs(argc, argv, 5);
 323         if (argc != 8) {
 324             cli->sendMsg(ResponseCode::CommandSyntaxError,
 325                     "Usage: asec create <container-id> <size_mb> <fstype> <key> <ownerUid> "
 326                     "<isExternal>", false);
 327             return 0;
 328         }
 329
 330         unsigned int numSectors = (atoi(argv[3]) * (1024 * 1024)) / 512;
 331         const bool isExternal = (atoi(argv[7]) == 1);
 332         rc = vm->createAsec(argv[2], numSectors, argv[4], argv[5], atoi(argv[6]), isExternal);
 333     } else if (!strcmp(argv[1], "finalize")) {
 334         dumpArgs(argc, argv, -1);
 335         if (argc != 3) {
 336             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec finalize <container-id>", false);
 337             return 0;
 338         }
 339         rc = vm->finalizeAsec(argv[2]);
 340     } else if (!strcmp(argv[1], "fixperms")) {
 341         dumpArgs(argc, argv, -1);
 342         if  (argc != 5) {
 343             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec fixperms <container-id> <gid> <filename>", false);
 344             return 0;
 345         }
 346
 347         char *endptr;
 348         gid_t gid = (gid_t) strtoul(argv[3], &endptr, 10);
 349         if (*endptr != '\0') {
 350             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec fixperms <container-id> <gid> <filename>", false);
 351             return 0;
 352         }
 353
 354         rc = vm->fixupAsecPermissions(argv[2], gid, argv[4]);
 355     } else if (!strcmp(argv[1], "destroy")) {
 356         dumpArgs(argc, argv, -1);
 357         if (argc < 3) {
 358             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec destroy <container-id> [force]", false);
 359             return 0;
 360         }
 361         bool force = false;
 362         if (argc > 3 && !strcmp(argv[3], "force")) {
 363             force = true;
 364         }
 365         rc = vm->destroyAsec(argv[2], force);
 366     } else if (!strcmp(argv[1], "mount")) {
 367         dumpArgs(argc, argv, 3);
 368         if (argc != 5) {
 369             cli->sendMsg(ResponseCode::CommandSyntaxError,
 370                     "Usage: asec mount <namespace-id> <key> <ownerUid>", false);
 371             return 0;
 372         }
 373         rc = vm->mountAsec(argv[2], argv[3], atoi(argv[4]));
 374     } else if (!strcmp(argv[1], "unmount")) {
 375         dumpArgs(argc, argv, -1);
 376         if (argc < 3) {
 377             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec unmount <container-id> [force]", false);
 378             return 0;
 379         }
 380         bool force = false;
 381         if (argc > 3 && !strcmp(argv[3], "force")) {
 382             force = true;
 383         }
 384         rc = vm->unmountAsec(argv[2], force);
 385     } else if (!strcmp(argv[1], "rename")) {
 386         dumpArgs(argc, argv, -1);
 387         if (argc != 4) {
 388             cli->sendMsg(ResponseCode::CommandSyntaxError,
 389                     "Usage: asec rename <old_id> <new_id>", false);
 390             return 0;
 391         }
 392         rc = vm->renameAsec(argv[2], argv[3]);
 393     } else if (!strcmp(argv[1], "path")) {
 394         dumpArgs(argc, argv, -1);
 395         if (argc != 3) {
 396             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec path <container-id>", false);
 397             return 0;
 398         }
 399         char path[255];
 400
 401         if (!(rc = vm->getAsecMountPath(argv[2], path, sizeof(path)))) {
 402             cli->sendMsg(ResponseCode::AsecPathResult, path, false);
 403             return 0;
 404         }
 405     } else if (!strcmp(argv[1], "fspath")) {
 406         dumpArgs(argc, argv, -1);
 407         if (argc != 3) {
 408             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: asec fspath <container-id>", false);
 409             return 0;
 410         }
 411         char path[255];
 412
 413         if (!(rc = vm->getAsecFilesystemPath(argv[2], path, sizeof(path)))) {
 414             cli->sendMsg(ResponseCode::AsecPathResult, path, false);
 415             return 0;
 416         }
 417     } else {
 418         dumpArgs(argc, argv, -1);
 419         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown asec cmd", false);
 420     }
 421
 422     if (!rc) {
 423         cli->sendMsg(ResponseCode::CommandOkay, "asec operation succeeded", false);
 424     } else {
 425         rc = ResponseCode::convertFromErrno();
 426         cli->sendMsg(rc, "asec operation failed", true);
 427     }
 428
 429     return 0;
 430 }
 431
 432 CommandListener::ObbCmd::ObbCmd() :
 433                  VoldCommand("obb") {
 434 }
 435
 436 int CommandListener::ObbCmd::runCommand(SocketClient *cli,
 437                                                       int argc, char **argv) {
 438     if (argc < 2) {
 439         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
 440         return 0;
 441     }
 442
 443     VolumeManager *vm = VolumeManager::Instance();
 444     int rc = 0;
 445
 446     if (!strcmp(argv[1], "list")) {
 447         dumpArgs(argc, argv, -1);
 448
 449         rc = vm->listMountedObbs(cli);
 450     } else if (!strcmp(argv[1], "mount")) {
 451             dumpArgs(argc, argv, 3);
 452             if (argc != 5) {
 453                 cli->sendMsg(ResponseCode::CommandSyntaxError,
 454                         "Usage: obb mount <filename> <key> <ownerGid>", false);
 455                 return 0;
 456             }
 457             rc = vm->mountObb(argv[2], argv[3], atoi(argv[4]));
 458     } else if (!strcmp(argv[1], "unmount")) {
 459         dumpArgs(argc, argv, -1);
 460         if (argc < 3) {
 461             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: obb unmount <source file> [force]", false);
 462             return 0;
 463         }
 464         bool force = false;
 465         if (argc > 3 && !strcmp(argv[3], "force")) {
 466             force = true;
 467         }
 468         rc = vm->unmountObb(argv[2], force);
 469     } else if (!strcmp(argv[1], "path")) {
 470         dumpArgs(argc, argv, -1);
 471         if (argc != 3) {
 472             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: obb path <source file>", false);
 473             return 0;
 474         }
 475         char path[255];
 476
 477         if (!(rc = vm->getObbMountPath(argv[2], path, sizeof(path)))) {
 478             cli->sendMsg(ResponseCode::AsecPathResult, path, false);
 479             return 0;
 480         }
 481     } else {
 482         dumpArgs(argc, argv, -1);
 483         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown obb cmd", false);
 484     }
 485
 486     if (!rc) {
 487         cli->sendMsg(ResponseCode::CommandOkay, "obb operation succeeded", false);
 488     } else {
 489         rc = ResponseCode::convertFromErrno();
 490         cli->sendMsg(rc, "obb operation failed", true);
 491     }
 492
 493     return 0;
 494 }
 495
 496 CommandListener::XwarpCmd::XwarpCmd() :
 497                  VoldCommand("xwarp") {
 498 }
 499
 500 int CommandListener::XwarpCmd::runCommand(SocketClient *cli,
 501                                                       int argc, char **argv) {
 502     if (argc < 2) {
 503         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
 504         return 0;
 505     }
 506
 507     if (!strcmp(argv[1], "enable")) {
 508         if (Xwarp::enable()) {
 509             cli->sendMsg(ResponseCode::OperationFailed, "Failed to enable xwarp", true);
 510             return 0;
 511         }
 512
 513         cli->sendMsg(ResponseCode::CommandOkay, "Xwarp mirroring started", false);
 514     } else if (!strcmp(argv[1], "disable")) {
 515         if (Xwarp::disable()) {
 516             cli->sendMsg(ResponseCode::OperationFailed, "Failed to disable xwarp", true);
 517             return 0;
 518         }
 519
 520         cli->sendMsg(ResponseCode::CommandOkay, "Xwarp disabled", false);
 521     } else if (!strcmp(argv[1], "status")) {
 522         char msg[255];
 523         bool r;
 524         unsigned mirrorPos, maxSize;
 525
 526         if (Xwarp::status(&r, &mirrorPos, &maxSize)) {
 527             cli->sendMsg(ResponseCode::OperationFailed, "Failed to get xwarp status", true);
 528             return 0;
 529         }
 530         snprintf(msg, sizeof(msg), "%s %u %u", (r ? "ready" : "not-ready"), mirrorPos, maxSize);
 531         cli->sendMsg(ResponseCode::XwarpStatusResult, msg, false);
 532     } else {
 533         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown storage cmd", false);
 534     }
 535
 536     return 0;
 537 }
 538
 539 CommandListener::CryptfsCmd::CryptfsCmd() :
 540                  VoldCommand("cryptfs") {
 541 }
 542
 543 int CommandListener::CryptfsCmd::runCommand(SocketClient *cli,
 544                                                       int argc, char **argv) {
 545     if ((cli->getUid() != 0) && (cli->getUid() != AID_SYSTEM)) {
 546         cli->sendMsg(ResponseCode::CommandNoPermission, "No permission to run cryptfs commands", false);
 547         return 0;
 548     }
 549
 550     if (argc < 2) {
 551         cli->sendMsg(ResponseCode::CommandSyntaxError, "Missing Argument", false);
 552         return 0;
 553     }
 554
 555     int rc = 0;
 556
 557     if (!strcmp(argv[1], "checkpw")) {
 558         if (argc != 3) {
 559             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs checkpw <passwd>", false);
 560             return 0;
 561         }
 562         dumpArgs(argc, argv, 2);
 563         rc = cryptfs_check_passwd(argv[2]);
 564     } else if (!strcmp(argv[1], "restart")) {
 565         if (argc != 2) {
 566             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs restart", false);
 567             return 0;
 568         }
 569         dumpArgs(argc, argv, -1);
 570         rc = cryptfs_restart();
 571     } else if (!strcmp(argv[1], "cryptocomplete")) {
 572         if (argc != 2) {
 573             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs cryptocomplete", false);
 574             return 0;
 575         }
 576         dumpArgs(argc, argv, -1);
 577         rc = cryptfs_crypto_complete();
 578     } else if (!strcmp(argv[1], "enablecrypto")) {
 579         if ( (argc != 4) || (strcmp(argv[2], "wipe") && strcmp(argv[2], "inplace")) ) {
 580             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs enablecrypto <wipe|inplace> <passwd>", false);
 581             return 0;
 582         }
 583         dumpArgs(argc, argv, 3);
 584         rc = cryptfs_enable(argv[2], argv[3]);
 585     } else if (!strcmp(argv[1], "changepw")) {
 586         if (argc != 3) {
 587             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs changepw <newpasswd>", false);
 588             return 0;
 589         }
 590         SLOGD("cryptfs changepw {}");
 591         rc = cryptfs_changepw(argv[2]);
 592     } else if (!strcmp(argv[1], "verifypw")) {
 593         if (argc != 3) {
 594             cli->sendMsg(ResponseCode::CommandSyntaxError, "Usage: cryptfs verifypw <passwd>", false);
 595             return 0;
 596         }
 597         SLOGD("cryptfs verifypw {}");
 598         rc = cryptfs_verify_passwd(argv[2]);
 599     } else {
 600         dumpArgs(argc, argv, -1);
 601         cli->sendMsg(ResponseCode::CommandSyntaxError, "Unknown cryptfs cmd", false);
 602     }
 603
 604     // Always report that the command succeeded and return the error code.
 605     // The caller will check the return value to see what the error was.
 606     char msg[255];
 607     snprintf(msg, sizeof(msg), "%d", rc);
 608     cli->sendMsg(ResponseCode::CommandOkay, msg, false);
 609
 610     return 0;
 611 }