src/cryptsetup.c

   1 #include <string.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <stdint.h>
   5 #include <inttypes.h>
   6 #include <errno.h>
   7 #include <unistd.h>
   8 #include <fcntl.h>
   9 #include <assert.h>
  10
  11 #include <libcryptsetup.h>
  12 #include <popt.h>
  13
  14 #include "../config.h"
  15
  16 #include "cryptsetup.h"
  17
  18 static int opt_verbose = 0;
  19 static int opt_debug = 0;
  20 static char *opt_cipher = NULL;
  21 static char *opt_hash = NULL;
  22 static int opt_verify_passphrase = 0;
  23 static char *opt_key_file = NULL;
  24 static char *opt_master_key_file = NULL;
  25 static unsigned int opt_key_size = 0;
  26 static int opt_key_slot = CRYPT_ANY_SLOT;
  27 static uint64_t opt_size = 0;
  28 static uint64_t opt_offset = 0;
  29 static uint64_t opt_skip = 0;
  30 static int opt_readonly = 0;
  31 static int opt_iteration_time = 1000;
  32 static int opt_batch_mode = 0;
  33 static int opt_version_mode = 0;
  34 static int opt_timeout = 0;
  35 static int opt_tries = 3;
  36 static int opt_align_payload = 0;
  37 static int opt_non_exclusive = 0;
  38
  39 static const char **action_argv;
  40 static int action_argc;
  41
  42 static int action_create(int arg);
  43 static int action_remove(int arg);
  44 static int action_resize(int arg);
  45 static int action_status(int arg);
  46 static int action_luksFormat(int arg);
  47 static int action_luksOpen(int arg);
  48 static int action_luksAddKey(int arg);
  49 static int action_luksDelKey(int arg);
  50 static int action_luksKillSlot(int arg);
  51 static int action_luksRemoveKey(int arg);
  52 static int action_isLuks(int arg);
  53 static int action_luksUUID(int arg);
  54 static int action_luksDump(int arg);
  55
  56 static struct action_type {
  57         const char *type;
  58         int (*handler)(int);
  59         int arg;
  60         int required_action_argc;
  61         int required_dm_backend;
  62         int required_memlock;
  63         int show_status;
  64         const char *arg_desc;
  65         const char *desc;
  66 } action_types[] = {
  67         { "create",     action_create,          0, 2, 1, 1, 1, N_("<name> <device>"),N_("create device") },
  68         { "remove",     action_remove,          0, 1, 1, 0, 1, N_("<name>"), N_("remove device") },
  69         { "resize",     action_resize,          0, 1, 1, 1, 1, N_("<name>"), N_("resize active device") },
  70         { "status",     action_status,          0, 1, 1, 0, 1, N_("<name>"), N_("show device status") },
  71         { "luksFormat", action_luksFormat,      0, 1, 1, 1, 1, N_("<device> [<new key file>]"), N_("formats a LUKS device") },
  72         { "luksOpen",   action_luksOpen,        0, 2, 1, 1, 1, N_("<device> <name> "), N_("open LUKS device as mapping <name>") },
  73         { "luksAddKey", action_luksAddKey,      0, 1, 1, 1, 1, N_("<device> [<new key file>]"), N_("add key to LUKS device") },
  74         { "luksRemoveKey",action_luksRemoveKey, 0, 1, 1, 1, 1, N_("<device> [<key file>]"), N_("removes supplied key or key file from LUKS device") },
  75         { "luksKillSlot",  action_luksKillSlot, 0, 2, 1, 1, 1, N_("<device> <key slot>"), N_("wipes key with number <key slot> from LUKS device") },
  76         { "luksUUID",   action_luksUUID,        0, 1, 0, 0, 1, N_("<device>"), N_("print UUID of LUKS device") },
  77         { "isLuks",     action_isLuks,          0, 1, 0, 0, 0, N_("<device>"), N_("tests <device> for LUKS partition header") },
  78         { "luksClose",  action_remove,          0, 1, 1, 0, 1, N_("<name>"), N_("remove LUKS mapping") },
  79         { "luksDump",   action_luksDump,        0, 1, 0, 0, 1, N_("<device>"), N_("dump LUKS partition information") },
  80         { "luksDelKey", action_luksDelKey,      0, 2, 1, 1, 1, N_("<device> <key slot>"), N_("identical to luksKillSlot - DEPRECATED - see man page") },
  81         { "reload",     action_create,          1, 2, 1, 1, 1, N_("<name> <device>"), N_("modify active device - DEPRECATED - see man page") },
  82         { NULL, NULL, 0, 0, 0, 0, 0, NULL, NULL }
  83 };
  84
  85 /* Interface Callbacks */
  86 static int yesDialog(char *msg)
  87 {
  88         char *answer = NULL;
  89         size_t size = 0;
  90         int r = 1;
  91
  92         if(isatty(0) && !opt_batch_mode) {
  93                 log_std("\nWARNING!\n========\n");
  94                 log_std("%s\n\nAre you sure? (Type uppercase yes): ", msg);
  95                 if(getline(&answer, &size, stdin) == -1) {
  96                         perror("getline");
  97                         free(answer);
  98                         return 0;
  99                 }
 100                 if(strcmp(answer, "YES\n"))
 101                         r = 0;
 102                 free(answer);
 103         }
 104
 105         return r;
 106 }
 107
 108 static void cmdLineLog(int class, char *msg) {
 109     switch(class) {
 110
 111     case CRYPT_LOG_NORMAL:
 112             fputs(msg, stdout);
 113             break;
 114     case CRYPT_LOG_ERROR:
 115             fputs(msg, stderr);
 116             break;
 117     default:
 118             fprintf(stderr, "Internal error on logging class for msg: %s", msg);
 119             break;
 120     }
 121 }
 122
 123 static struct interface_callbacks cmd_icb = {
 124         .yesDialog = yesDialog,
 125         .log = cmdLineLog,
 126 };
 127
 128 /* End ICBs */
 129
 130 static void show_status(int errcode)
 131 {
 132         char error[256];
 133
 134         if(!errcode && opt_verbose) {
 135                 log_std(_("Command successful.\n"));
 136                 return;
 137         }
 138
 139         crypt_get_error(error, sizeof(error));
 140
 141         if (!opt_verbose) {
 142                 char *error_ = strerror_r(errcode, error, sizeof(error));
 143                 if (error_ != error) {
 144                         strncpy(error, error_, sizeof(error));
 145                         error[sizeof error - 1] = '\0';
 146                 }
 147         }
 148
 149         log_err(_("Command failed"));
 150         if (*error)
 151                 log_err(": %s\n", error);
 152         else
 153                 log_err(".\n");
 154         return;
 155 }
 156
 157 static int action_create(int reload)
 158 {
 159         struct crypt_options options = {
 160                 .name = action_argv[0],
 161                 .device = action_argv[1],
 162                 .cipher = opt_cipher?opt_cipher:DEFAULT_CIPHER,
 163                 .hash = opt_hash ?: DEFAULT_HASH,
 164                 .key_file = opt_key_file,
 165                 .key_size = ((opt_key_size)?opt_key_size:DEFAULT_KEY_SIZE)/8,
 166                 .key_slot = opt_key_slot,
 167                 .flags = 0,
 168                 .size = opt_size,
 169                 .offset = opt_offset,
 170                 .skip = opt_skip,
 171                 .timeout = opt_timeout,
 172                 .tries = opt_tries,
 173                 .icb = &cmd_icb,
 174         };
 175         int r;
 176
 177         if(reload)
 178                 log_err(_("The reload action is deprecated. Please use \"dmsetup reload\" in case you really need this functionality.\nWARNING: do not use reload to touch LUKS devices. If that is the case, hit Ctrl-C now.\n"));
 179
 180         if (options.hash && strcmp(options.hash, "plain") == 0)
 181                 options.hash = NULL;
 182         if (opt_verify_passphrase)
 183                 options.flags |= CRYPT_FLAG_VERIFY;
 184         if (opt_readonly)
 185                 options.flags |= CRYPT_FLAG_READONLY;
 186
 187         if (reload)
 188                 r = crypt_update_device(&options);
 189         else
 190                 r = crypt_create_device(&options);
 191
 192         return r;
 193 }
 194
 195 static int action_remove(int arg)
 196 {
 197         struct crypt_options options = {
 198                 .name = action_argv[0],
 199                 .icb = &cmd_icb,
 200         };
 201
 202         return crypt_remove_device(&options);
 203 }
 204
 205 static int action_resize(int arg)
 206 {
 207         struct crypt_options options = {
 208                 .name = action_argv[0],
 209                 .size = opt_size,
 210                 .icb = &cmd_icb,
 211         };
 212
 213         return crypt_resize_device(&options);
 214 }
 215
 216 static int action_status(int arg)
 217 {
 218         struct crypt_options options = {
 219                 .name = action_argv[0],
 220                 .icb = &cmd_icb,
 221         };
 222         int r;
 223
 224         r = crypt_query_device(&options);
 225         if (r < 0)
 226                 return r;
 227
 228         if (r == 0) {
 229                 /* inactive */
 230                 log_std("%s/%s is inactive.\n", crypt_get_dir(), options.name);
 231                 r = 1;
 232         } else {
 233                 /* active */
 234                 log_std("%s/%s is active:\n", crypt_get_dir(), options.name);
 235                 log_std("  cipher:  %s\n", options.cipher);
 236                 log_std("  keysize: %d bits\n", options.key_size * 8);
 237                 log_std("  device:  %s\n", options.device);
 238                 log_std("  offset:  %" PRIu64 " sectors\n", options.offset);
 239                 log_std("  size:    %" PRIu64 " sectors\n", options.size);
 240                 if (options.skip)
 241                         log_std("  skipped: %" PRIu64 " sectors\n", options.skip);
 242                 log_std("  mode:    %s\n", (options.flags & CRYPT_FLAG_READONLY)
 243                                            ? "readonly" : "read/write");
 244                 crypt_put_options(&options);
 245                 r = 0;
 246         }
 247         return r;
 248 }
 249
 250 static int _action_luksFormat_generateMK()
 251 {
 252         struct crypt_options options = {
 253                 .key_size = (opt_key_size ?: DEFAULT_LUKS_KEY_SIZE) / 8,
 254                 .key_slot = opt_key_slot,
 255                 .device = action_argv[0],
 256                 .cipher = opt_cipher ?: DEFAULT_LUKS_CIPHER,
 257                 .hash = opt_hash ?: DEFAULT_LUKS_HASH,
 258                 .new_key_file = action_argc > 1 ? action_argv[1] : NULL,
 259                 .flags = opt_verify_passphrase ? CRYPT_FLAG_VERIFY : (!opt_batch_mode?CRYPT_FLAG_VERIFY_IF_POSSIBLE :  0),
 260                 .iteration_time = opt_iteration_time,
 261                 .timeout = opt_timeout,
 262                 .align_payload = opt_align_payload,
 263                 .icb = &cmd_icb,
 264         };
 265
 266         return crypt_luksFormat(&options);
 267 }
 268
 269 static int _read_mk(const char *file, char **key, int keysize)
 270 {
 271         int fd;
 272
 273         *key = malloc(keysize);
 274         if (!*key)
 275                 return -ENOMEM;
 276
 277         fd = open(file, O_RDONLY);
 278         if (fd == -1) {
 279                 log_err("Cannot read keyfile %s.\n", file);
 280                 return -EINVAL;
 281         }
 282         if ((read(fd, *key, keysize) != keysize)) {
 283                 log_err("Cannot read %d bytes from keyfile %s.\n", keysize, file);
 284                 close(fd);
 285                 memset(*key, 0, keysize);
 286                 free(*key);
 287                 return -EINVAL;
 288         }
 289         close(fd);
 290         return 0;
 291 }
 292
 293 static int _action_luksFormat_useMK()
 294 {
 295         int r = -EINVAL, keysize;
 296         char *key = NULL, cipher [MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
 297         struct crypt_device *cd = NULL;
 298         struct crypt_params_luks1 params = {
 299                 .hash = opt_hash ?: DEFAULT_LUKS_HASH,
 300                 .data_alignment = opt_align_payload,
 301         };
 302
 303         if (parse_into_name_and_mode(opt_cipher ?: DEFAULT_LUKS_CIPHER, cipher, cipher_mode)) {
 304                 log_err("No known cipher specification pattern detected.\n");
 305                 return -EINVAL;
 306         }
 307
 308         keysize = (opt_key_size ?: DEFAULT_LUKS_KEY_SIZE) / 8;
 309         if (_read_mk(opt_master_key_file, &key, keysize) < 0)
 310                 return -EINVAL;
 311
 312         if ((r = crypt_init(&cd, action_argv[0])))
 313                 goto out;
 314
 315         crypt_set_password_verify(cd, 1);
 316         crypt_set_timeout(cd, opt_timeout);
 317         if (opt_iteration_time)
 318                 crypt_set_iterarion_time(cd, opt_iteration_time);
 319
 320         if ((r = crypt_format(cd, CRYPT_LUKS1, cipher, cipher_mode, NULL, key, keysize, &params)))
 321                 goto out;
 322
 323         r = crypt_keyslot_add_by_volume_key(cd, opt_key_slot, key, keysize, NULL, 0);
 324 out:
 325
 326         crypt_free(cd);
 327         if (key) {
 328                 memset(key, 0, keysize);
 329                 free(key);
 330         }
 331         return r;
 332 }
 333
 334 static int action_luksFormat(int arg)
 335 {
 336         int r = 0; char *msg = NULL;
 337
 338         /* Avoid overwriting possibly wrong part of device than user requested by rejecting these options */
 339         if (opt_offset || opt_skip) {
 340                 log_err("Options --offset and --skip are not supported for luksFormat.\n");
 341                 return -EINVAL;
 342         }
 343
 344         if(asprintf(&msg, _("This will overwrite data on %s irrevocably."), action_argv[0]) == -1) {
 345                 log_err(_("memory allocation error in action_luksFormat"));
 346                 return -ENOMEM;
 347         }
 348         r = yesDialog(msg);
 349         free(msg);
 350
 351         if (!r)
 352                 return -EINVAL;
 353
 354         if (opt_master_key_file)
 355                 return _action_luksFormat_useMK();
 356         else
 357                 return _action_luksFormat_generateMK();
 358 }
 359
 360 static int action_luksOpen(int arg)
 361 {
 362         struct crypt_options options = {
 363                 .name = action_argv[1],
 364                 .device = action_argv[0],
 365                 .key_file = opt_key_file,
 366                 .key_size = opt_key_file ? (opt_key_size / 8) : 0, /* limit bytes read from keyfile */
 367                 .timeout = opt_timeout,
 368                 .tries = opt_key_file ? 1 : opt_tries, /* verify is usefull only for tty */
 369                 .icb = &cmd_icb,
 370         };
 371
 372         if (opt_readonly)
 373                 options.flags |= CRYPT_FLAG_READONLY;
 374         if (opt_non_exclusive)
 375                 options.flags |= CRYPT_FLAG_NON_EXCLUSIVE_ACCESS;
 376         return crypt_luksOpen(&options);
 377 }
 378
 379 static int action_luksDelKey(int arg)
 380 {
 381         log_err("luksDelKey is a deprecated action name.\nPlease use luksKillSlot.\n");
 382         return action_luksKillSlot(arg);
 383 }
 384
 385 static int action_luksKillSlot(int arg)
 386 {
 387         struct crypt_options options = {
 388                 .device = action_argv[0],
 389                 .key_slot = atoi(action_argv[1]),
 390                 .key_file = opt_key_file,
 391                 .timeout = opt_timeout,
 392                 .flags = !opt_batch_mode?CRYPT_FLAG_VERIFY_ON_DELKEY : 0,
 393                 .icb = &cmd_icb,
 394         };
 395
 396         return crypt_luksKillSlot(&options);
 397 }
 398
 399 static int action_luksRemoveKey(int arg)
 400 {
 401         struct crypt_options options = {
 402                 .device = action_argv[0],
 403                 .new_key_file = action_argc>1?action_argv[1]:NULL,
 404                 .key_file = opt_key_file,
 405                 .timeout = opt_timeout,
 406                 .flags = !opt_batch_mode?CRYPT_FLAG_VERIFY_ON_DELKEY : 0,
 407                 .icb = &cmd_icb,
 408         };
 409
 410         return crypt_luksRemoveKey(&options);
 411 }
 412
 413 static int _action_luksAddKey_useMK()
 414 {
 415         int r = -EINVAL, keysize;
 416         char *key = NULL;
 417         struct crypt_device *cd = NULL;
 418
 419         if ((r = crypt_init(&cd, action_argv[0])))
 420                 goto out;
 421
 422         if ((r = crypt_load(cd, CRYPT_LUKS1, NULL)))
 423                 goto out;
 424
 425         keysize = crypt_get_volume_key_size(cd);
 426         crypt_set_password_verify(cd, 1);
 427         crypt_set_timeout(cd, opt_timeout);
 428         if (opt_iteration_time)
 429                 crypt_set_iterarion_time(cd, opt_iteration_time);
 430
 431         if (_read_mk(opt_master_key_file, &key, keysize) < 0)
 432                 goto out;
 433
 434         r = crypt_keyslot_add_by_volume_key(cd, opt_key_slot, key, keysize, NULL, 0);
 435 out:
 436         crypt_free(cd);
 437         if (key) {
 438                 memset(key, 0, keysize);
 439                 free(key);
 440         }
 441         return r;
 442 }
 443
 444 static int action_luksAddKey(int arg)
 445 {
 446         struct crypt_options options = {
 447                 .device = action_argv[0],
 448                 .new_key_file = action_argc>1?action_argv[1]:NULL,
 449                 .key_file = opt_key_file,
 450                 .key_slot = opt_key_slot,
 451                 .flags = opt_verify_passphrase ? CRYPT_FLAG_VERIFY : (!opt_batch_mode?CRYPT_FLAG_VERIFY_IF_POSSIBLE : 0),
 452                 .iteration_time = opt_iteration_time,
 453                 .timeout = opt_timeout,
 454                 .icb = &cmd_icb,
 455         };
 456
 457         if (opt_master_key_file)
 458                 return _action_luksAddKey_useMK();
 459         else
 460                 return crypt_luksAddKey(&options);
 461 }
 462
 463 static int action_isLuks(int arg)
 464 {
 465         struct crypt_options options = {
 466                 .device = action_argv[0],
 467                 .icb = &cmd_icb,
 468         };
 469
 470         return crypt_isLuks(&options);
 471 }
 472
 473 static int action_luksUUID(int arg)
 474 {
 475         struct crypt_options options = {
 476                 .device = action_argv[0],
 477                 .icb = &cmd_icb,
 478         };
 479
 480         return crypt_luksUUID(&options);
 481 }
 482
 483 static int action_luksDump(int arg)
 484 {
 485         struct crypt_options options = {
 486                 .device = action_argv[0],
 487                 .icb = &cmd_icb,
 488         };
 489
 490         return crypt_luksDump(&options);
 491 }
 492
 493 static void usage(poptContext popt_context, int exitcode,
 494                   const char *error, const char *more)
 495 {
 496         poptPrintUsage(popt_context, stderr, 0);
 497         if (error)
 498                 log_err("%s: %s\n", more, error);
 499         exit(exitcode);
 500 }
 501
 502 static void help(poptContext popt_context, enum poptCallbackReason reason,
 503                  struct poptOption *key, const char * arg, void *data)
 504 {
 505         if (key->shortName == '?') {
 506                 struct action_type *action;
 507
 508                 log_std("%s\n",PACKAGE_STRING);
 509
 510                 poptPrintHelp(popt_context, stdout, 0);
 511
 512                 log_std(_("\n"
 513                          "<action> is one of:\n"));
 514
 515                 for(action = action_types; action->type; action++)
 516                         log_std("\t%s %s - %s\n", action->type, _(action->arg_desc), _(action->desc));
 517
 518                 log_std(_("\n"
 519                          "<name> is the device to create under %s\n"
 520                          "<device> is the encrypted device\n"
 521                          "<key slot> is the LUKS key slot number to modify\n"
 522                          "<key file> optional key file for the new key for luksAddKey action\n"),
 523                         crypt_get_dir());
 524                 exit(0);
 525         } else
 526                 usage(popt_context, 0, NULL, NULL);
 527 }
 528
 529 void set_debug_level(int level);
 530
 531 static void _dbg_version_and_cmd(int argc, char **argv)
 532 {
 533         int i;
 534
 535         log_std("# %s %s processing \"", PACKAGE_NAME, PACKAGE_VERSION);
 536         for (i = 0; i < argc; i++) {
 537                 if (i)
 538                         log_std(" ");
 539                 log_std(argv[i]);
 540         }
 541         log_std("\"\n");
 542 }
 543
 544 static int run_action(struct action_type *action)
 545 {
 546         int r;
 547
 548         if (dm_init(NULL, action->required_dm_backend) < 1) {
 549                 log_err("Cannot communicate with device-mapper. Is dm_mod kernel module loaded?\n");
 550                 return -ENOSYS;
 551         }
 552
 553         if (action->required_memlock)
 554                 crypt_memory_lock(NULL, 1);
 555
 556         r = action->handler(action->arg);
 557
 558         if (action->required_memlock)
 559                 crypt_memory_lock(NULL, 0);
 560
 561         if (action->required_dm_backend)
 562                 dm_exit();
 563
 564         if (r < 0 && (opt_verbose || action->show_status))
 565                 show_status(-r);
 566
 567         return r;
 568 }
 569
 570 int main(int argc, char **argv)
 571 {
 572         static char *popt_tmp;
 573         static struct poptOption popt_help_options[] = {
 574                 { NULL,    '\0', POPT_ARG_CALLBACK, help, 0, NULL,                         NULL },
 575                 { "help",  '?',  POPT_ARG_NONE,     NULL, 0, N_("Show this help message"), NULL },
 576                 { "usage", '\0', POPT_ARG_NONE,     NULL, 0, N_("Display brief usage"),    NULL },
 577                 POPT_TABLEEND
 578         };
 579         static struct poptOption popt_options[] = {
 580                 { NULL,                '\0', POPT_ARG_INCLUDE_TABLE,                      popt_help_options,      0, N_("Help options:"),                                                   NULL },
 581                 { "verbose",           'v',  POPT_ARG_NONE,                               &opt_verbose,           0, N_("Shows more detailed error messages"),                              NULL },
 582                 { "debug",             '\0', POPT_ARG_NONE,                               &opt_debug,             0, N_("Show debug messsgages"),                                           NULL },
 583                 { "cipher",            'c',  POPT_ARG_STRING | POPT_ARGFLAG_SHOW_DEFAULT, &opt_cipher,            0, N_("The cipher used to encrypt the disk (see /proc/crypto)"),          NULL },
 584                 { "hash",              'h',  POPT_ARG_STRING | POPT_ARGFLAG_SHOW_DEFAULT, &opt_hash,              0, N_("The hash used to create the encryption key from the passphrase"),  NULL },
 585                 { "verify-passphrase", 'y',  POPT_ARG_NONE,                               &opt_verify_passphrase, 0, N_("Verifies the passphrase by asking for it twice"),                  NULL },
 586                 { "key-file",          'd',  POPT_ARG_STRING,                             &opt_key_file,          0, N_("Read the key from a file (can be /dev/random)"),                   NULL },
 587                 { "master-key-file",  '\0',  POPT_ARG_STRING,                             &opt_master_key_file,   0, N_("Read the volume (master) key from file."),                         NULL },
 588                 { "key-size",          's',  POPT_ARG_INT    | POPT_ARGFLAG_SHOW_DEFAULT, &opt_key_size,          0, N_("The size of the encryption key"),                                  N_("BITS") },
 589                 { "key-slot",          'S',  POPT_ARG_INT,                                &opt_key_slot,          0, N_("Slot number for new key (default is first free)"),      NULL },
 590                 { "size",              'b',  POPT_ARG_STRING,                             &popt_tmp,              1, N_("The size of the device"),                                          N_("SECTORS") },
 591                 { "offset",            'o',  POPT_ARG_STRING,                             &popt_tmp,              2, N_("The start offset in the backend device"),                          N_("SECTORS") },
 592                 { "skip",              'p',  POPT_ARG_STRING,                             &popt_tmp,              3, N_("How many sectors of the encrypted data to skip at the beginning"), N_("SECTORS") },
 593                 { "readonly",          'r',  POPT_ARG_NONE,                               &opt_readonly,          0, N_("Create a readonly mapping"),                                       NULL },
 594                 { "iter-time",         'i',  POPT_ARG_INT,                                &opt_iteration_time,    0, N_("PBKDF2 iteration time for LUKS (in ms)"),
 595                   N_("msecs") },
 596                 { "batch-mode",        'q',  POPT_ARG_NONE,                               &opt_batch_mode,        0, N_("Do not ask for confirmation"),                                     NULL },
 597                 { "version",        '\0',  POPT_ARG_NONE,                                 &opt_version_mode,        0, N_("Print package version"),                                     NULL },
 598                 { "timeout",           't',  POPT_ARG_INT,                                &opt_timeout,           0, N_("Timeout for interactive passphrase prompt (in seconds)"),          N_("secs") },
 599                 { "tries",             'T',  POPT_ARG_INT,                                &opt_tries,             0, N_("How often the input of the passphrase canbe retried"),            NULL },
 600                 { "align-payload",     '\0',  POPT_ARG_INT,                               &opt_align_payload,     0, N_("Align payload at <n> sector boundaries - for luksFormat"),         N_("SECTORS") },
 601                 { "non-exclusive",     '\0',  POPT_ARG_NONE,                              &opt_non_exclusive,     0, N_("Allows non-exclusive access for luksOpen, WARNING see manpage."),        NULL },
 602                 POPT_TABLEEND
 603         };
 604         poptContext popt_context;
 605         struct action_type *action;
 606         char *aname;
 607         int r;
 608         const char *null_action_argv[] = {NULL};
 609
 610         set_default_log(cmdLineLog);
 611
 612         setlocale(LC_ALL, "");
 613         bindtextdomain(PACKAGE, LOCALEDIR);
 614         textdomain(PACKAGE);
 615
 616         popt_context = poptGetContext(PACKAGE, argc, (const char **)argv,
 617                                       popt_options, 0);
 618         poptSetOtherOptionHelp(popt_context,
 619                                N_("[OPTION...] <action> <action-specific>]"));
 620
 621         while((r = poptGetNextOpt(popt_context)) > 0) {
 622                 unsigned long long ull_value;
 623                 char *endp;
 624
 625                 ull_value = strtoull(popt_tmp, &endp, 0);
 626                 if (*endp || !*popt_tmp)
 627                         r = POPT_ERROR_BADNUMBER;
 628
 629                 switch(r) {
 630                         case 1:
 631                                 opt_size = ull_value;
 632                                 break;
 633                         case 2:
 634                                 opt_offset = ull_value;
 635                                 break;
 636                         case 3:
 637                                 opt_skip = ull_value;
 638                                 break;
 639                 }
 640
 641                 if (r < 0)
 642                         break;
 643         }
 644
 645         if (r < -1)
 646                 usage(popt_context, 1, poptStrerror(r),
 647                       poptBadOption(popt_context, POPT_BADOPTION_NOALIAS));
 648         if (opt_version_mode) {
 649                 log_std("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION);
 650                 exit(0);
 651         }
 652
 653         if (opt_key_size % 8)
 654                 usage(popt_context, 1,
 655                       _("Key size must be a multiple of 8 bits"),
 656                       poptGetInvocationName(popt_context));
 657
 658         if (!(aname = (char *)poptGetArg(popt_context)))
 659                 usage(popt_context, 1, _("Argument <action> missing."),
 660                       poptGetInvocationName(popt_context));
 661         for(action = action_types; action->type; action++)
 662                 if (strcmp(action->type, aname) == 0)
 663                         break;
 664         if (!action->type)
 665                 usage(popt_context, 1, _("Unknown action."),
 666                       poptGetInvocationName(popt_context));
 667
 668         action_argc = 0;
 669         action_argv = poptGetArgs(popt_context);
 670         /* Make return values of poptGetArgs more consistent in case of remaining argc = 0 */
 671         if(!action_argv)
 672                 action_argv = null_action_argv;
 673
 674         /* Count args, somewhat unnice, change? */
 675         while(action_argv[action_argc] != NULL)
 676                 action_argc++;
 677
 678         if(action_argc < action->required_action_argc) {
 679                 char buf[128];
 680                 snprintf(buf, 128,_("%s: requires %s as arguments"), action->type, action->arg_desc);
 681                 usage(popt_context, 1, buf,
 682                       poptGetInvocationName(popt_context));
 683         }
 684
 685         if (opt_debug) {
 686                 opt_verbose = 1;
 687                 crypt_set_debug_level(-1);
 688                 _dbg_version_and_cmd(argc, argv);
 689         }
 690
 691         return run_action(action);
 692 }