wimlib.net Git - wimlib/blob - programs/imagex.c

   1 /*
   2  * imagex.c
   3  *
   4  * Use wimlib to create, modify, extract, mount, unmount, or display information
   5  * about a WIM file
   6  */
   7
   8 /*
   9  * Copyright (C) 2012 Eric Biggers
  10  *
  11  * This program is free software: you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation, either version 3 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #include "wimlib.h"
  26 #include "config.h"
  27 #include <getopt.h>
  28 #include <stdlib.h>
  29 #include <stdarg.h>
  30 #include <glob.h>
  31 #include <string.h>
  32 #include <errno.h>
  33 #include <libgen.h>
  34 #include <sys/stat.h>
  35
  36 #define ARRAY_LEN(array) (sizeof(array) / sizeof(array[0]))
  37
  38 #define swap(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
  39                                 a = __b; b = __a; })
  40
  41 #define for_opt(c, opts) while ((c = getopt_long_only(argc, (char**)argv, "", \
  42                                 opts, NULL)) != -1)
  43
  44
  45 enum imagex_op_type {
  46         APPEND,
  47         APPLY,
  48         CAPTURE,
  49         DELETE,
  50         DIR,
  51         EXPORT,
  52         INFO,
  53         JOIN,
  54         MOUNT,
  55         MOUNTRW,
  56         SPLIT,
  57         UNMOUNT,
  58 };
  59
  60 static void usage(int cmd_type);
  61 static void usage_all();
  62
  63 static const char *usage_strings[] = {
  64 [APPEND] =
  65 "    imagex append (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
  66 "                  [DESCRIPTION] [--boot] [--check] [--flags EDITION_ID]\n"
  67 "                  [--verbose] [--dereference] [--config=FILE]\n",
  68 [APPLY] =
  69 "    imagex apply WIMFILE [IMAGE_NUM | IMAGE_NAME | all]\n"
  70 "                 (DIRECTORY | NTFS_VOLUME) [--check] [--hardlink]\n"
  71 "                 [--symlink] [--verbose] [--ref=\"GLOB\"]\n",
  72 [CAPTURE] =
  73 "    imagex capture (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
  74 "                   [DESCRIPTION] [--boot] [--check] [--compress=TYPE]\n"
  75 "                   [--flags EDITION_ID] [--verbose] [--dereference]\n"
  76 "                   [--config=FILE]\n",
  77 [DELETE] =
  78 "    imagex delete WIMFILE (IMAGE_NUM | IMAGE_NAME | all) [--check]\n",
  79 [DIR] =
  80 "    imagex dir WIMFILE (IMAGE_NUM | IMAGE_NAME | all)\n",
  81 [EXPORT] =
  82 "    imagex export SRC_WIMFILE (SRC_IMAGE_NUM | SRC_IMAGE_NAME | all ) \n"
  83 "                  DEST_WIMFILE [DEST_IMAGE_NAME]\n"
  84 "                  [DEST_IMAGE_DESCRIPTION] [--boot] [--check]\n"
  85 "                  [--compress=TYPE] [--ref=\"GLOB\"]\n",
  86 [INFO] =
  87 "    imagex info WIMFILE [IMAGE_NUM | IMAGE_NAME] [NEW_NAME]\n"
  88 "                [NEW_DESC] [--boot] [--check] [--header] [--lookup-table]\n"
  89 "                [--xml] [--extract-xml FILE] [--metadata]\n",
  90 [JOIN] =
  91 "    imagex join [--check] WIMFILE SPLIT_WIM...\n",
  92 [MOUNT] =
  93 "    imagex mount WIMFILE (IMAGE_NUM | IMAGE_NAME) DIRECTORY\n"
  94 "                 [--check] [--debug] [--streams-interface=INTERFACE]\n"
  95 "                 [--ref=\"GLOB\"]\n",
  96 [MOUNTRW] =
  97 "    imagex mountrw WIMFILE [IMAGE_NUM | IMAGE_NAME] DIRECTORY\n"
  98 "                   [--check] [--debug] [--streams-interface=INTERFACE]\n",
  99 [SPLIT] =
 100 "    imagex split WIMFILE SPLIT_WIMFILE PART_SIZE_MB [--check]\n",
 101 [UNMOUNT] =
 102 "    imagex unmount DIRECTORY [--commit] [--check]\n",
 103 };
 104
 105 static const struct option common_options[] = {
 106         {"help", 0, NULL, 'h'},
 107         {"version", 0, NULL, 'v'},
 108         {NULL, 0, NULL, 0},
 109 };
 110
 111 static const struct option apply_options[] = {
 112         {"check",    no_argument,       NULL, 'c'},
 113         {"hardlink", no_argument,       NULL, 'h'},
 114         {"symlink",  no_argument,       NULL, 's'},
 115         {"verbose",  no_argument,       NULL, 'v'},
 116         {"ref",      required_argument, NULL, 'r'},
 117         {NULL, 0, NULL, 0},
 118 };
 119 static const struct option capture_or_append_options[] = {
 120         {"boot",        no_argument,       NULL, 'b'},
 121         {"check",       no_argument,       NULL, 'c'},
 122         {"compress",    required_argument, NULL, 'x'},
 123         {"config",      required_argument, NULL, 'C'},
 124         {"dereference", no_argument,       NULL, 'L'},
 125         {"flags",       required_argument, NULL, 'f'},
 126         {"verbose",     no_argument,       NULL, 'v'},
 127         {NULL, 0, NULL, 0},
 128 };
 129 static const struct option delete_options[] = {
 130         {"check", no_argument, NULL, 'c'},
 131         {NULL, 0, NULL, 0},
 132 };
 133
 134 static const struct option export_options[] = {
 135         {"boot",       no_argument,       NULL, 'b'},
 136         {"check",      no_argument,       NULL, 'c'},
 137         {"compress",   required_argument, NULL, 'x'},
 138         {"ref",        required_argument, NULL, 'r'},
 139         {NULL, 0, NULL, 0},
 140 };
 141
 142 static const struct option info_options[] = {
 143         {"boot",         no_argument, NULL, 'b'},
 144         {"check",        no_argument, NULL, 'c'},
 145         {"extract-xml",  required_argument, NULL, 'X'},
 146         {"header",       no_argument, NULL, 'h'},
 147         {"lookup-table", no_argument, NULL, 'l'},
 148         {"metadata",     no_argument, NULL, 'm'},
 149         {"xml",          no_argument, NULL, 'x'},
 150         {NULL, 0, NULL, 0},
 151 };
 152
 153 static const struct option join_options[] = {
 154         {"check", no_argument, NULL, 'c'},
 155         {NULL, 0, NULL, 0},
 156 };
 157
 158 static const struct option mount_options[] = {
 159         {"check", no_argument, NULL, 'c'},
 160         {"debug", no_argument, NULL, 'd'},
 161         {"streams-interface", required_argument, NULL, 's'},
 162         {"ref",      required_argument, NULL, 'r'},
 163         {NULL, 0, NULL, 0},
 164 };
 165
 166 static const struct option split_options[] = {
 167         {"check", no_argument, NULL, 'c'},
 168         {NULL, 0, NULL, 0},
 169 };
 170
 171 static const struct option unmount_options[] = {
 172         {"commit", no_argument, NULL, 'c'},
 173         {"check", no_argument, NULL, 'C'},
 174         {NULL, 0, NULL, 0},
 175 };
 176
 177
 178
 179 /* Print formatted error message to stderr. */
 180 static void imagex_error(const char *format, ...)
 181 {
 182         va_list va;
 183         va_start(va, format);
 184         fputs("ERROR: ", stderr);
 185         vfprintf(stderr, format, va);
 186         putc('\n', stderr);
 187         va_end(va);
 188 }
 189
 190 /* Print formatted error message to stderr. */
 191 static void imagex_error_with_errno(const char *format, ...)
 192 {
 193         int errno_save = errno;
 194         va_list va;
 195         va_start(va, format);
 196         fputs("ERROR: ", stderr);
 197         vfprintf(stderr, format, va);
 198         fprintf(stderr, ": %s\n", strerror(errno_save));
 199         va_end(va);
 200 }
 201
 202 static int verify_image_exists(int image)
 203 {
 204         if (image == WIM_NO_IMAGE) {
 205                 imagex_error("Not a valid image");
 206                 return WIMLIB_ERR_INVALID_IMAGE;
 207         }
 208         return 0;
 209 }
 210
 211 static int verify_image_is_single(int image)
 212 {
 213         if (image == WIM_ALL_IMAGES) {
 214                 imagex_error("Cannot specify all images for this action");
 215                 return WIMLIB_ERR_INVALID_IMAGE;
 216         }
 217         return 0;
 218 }
 219
 220 static int verify_image_exists_and_is_single(int image)
 221 {
 222         int ret;
 223         ret = verify_image_exists(image);
 224         if (ret == 0)
 225                 ret = verify_image_is_single(image);
 226         return ret;
 227 }
 228
 229 static int get_compression_type(const char *optarg)
 230 {
 231         if (strcasecmp(optarg, "maximum") == 0 || strcasecmp(optarg, "lzx") == 0)
 232                 return WIM_COMPRESSION_TYPE_LZX;
 233         else if (strcasecmp(optarg, "fast") == 0 || strcasecmp(optarg, "xpress") == 0)
 234                 return WIM_COMPRESSION_TYPE_XPRESS;
 235         else if (strcasecmp(optarg, "none") == 0)
 236                 return WIM_COMPRESSION_TYPE_NONE;
 237         else {
 238                 imagex_error("Invalid compression type `%s'! Must be "
 239                              "\"maximum\", \"fast\", or \"none\".", optarg);
 240                 return WIM_COMPRESSION_TYPE_INVALID;
 241         }
 242 }
 243
 244 static char *file_get_contents(const char *filename, size_t *len_ret)
 245 {
 246         struct stat stbuf;
 247         char *buf;
 248         size_t len;
 249         FILE *fp;
 250
 251         if (stat(filename, &stbuf) != 0) {
 252                 imagex_error_with_errno("Failed to stat the file `%s'", filename);
 253                 return NULL;
 254         }
 255         len = stbuf.st_size;
 256
 257         fp = fopen(filename, "rb");
 258         if (!fp) {
 259                 imagex_error_with_errno("Failed to open the file `%s'", filename);
 260                 return NULL;
 261         }
 262
 263         buf = malloc(len);
 264         if (!buf) {
 265                 imagex_error("Failed to allocate buffer of %zu bytes to hold "
 266                              "contents of file `%s'", len, filename);
 267                 goto out_fclose;
 268         }
 269         if (fread(buf, 1, len, fp) != len) {
 270                 imagex_error_with_errno("Failed to read %lu bytes from the "
 271                                         "file `%s'", len, filename);
 272                 goto out_free_buf;
 273         }
 274         *len_ret = len;
 275         return buf;
 276 out_free_buf:
 277         free(buf);
 278 out_fclose:
 279         fclose(fp);
 280         return NULL;
 281 }
 282
 283 static int open_swms_from_glob(const char *swm_glob,
 284                                const char *first_part,
 285                                int open_flags,
 286                                WIMStruct ***additional_swms_ret,
 287                                unsigned *num_additional_swms_ret)
 288 {
 289         unsigned num_additional_swms = 0;
 290         WIMStruct **additional_swms = NULL;
 291         glob_t globbuf;
 292         int ret;
 293
 294         ret = glob(swm_glob, GLOB_ERR | GLOB_NOSORT, NULL, &globbuf);
 295         if (ret != 0) {
 296                 if (ret == GLOB_NOMATCH) {
 297                         imagex_error("Found no files for glob \"%s\"",
 298                                      swm_glob);
 299                 } else {
 300                         imagex_error_with_errno("Failed to process glob "
 301                                                 "\"%s\"", swm_glob);
 302                 }
 303                 ret = -1;
 304                 goto out;
 305         }
 306         num_additional_swms = globbuf.gl_pathc;
 307         additional_swms = calloc(num_additional_swms, sizeof(additional_swms[0]));
 308         if (!additional_swms) {
 309                 imagex_error("Out of memory");
 310                 ret = -1;
 311                 goto out_globfree;
 312         }
 313         unsigned offset = 0;
 314         for (unsigned i = 0; i < num_additional_swms; i++) {
 315                 if (strcmp(globbuf.gl_pathv[i], first_part) == 0) {
 316                         offset++;
 317                         continue;
 318                 }
 319                 ret = wimlib_open_wim(globbuf.gl_pathv[i],
 320                                       open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK,
 321                                       &additional_swms[i - offset]);
 322                 if (ret != 0)
 323                         goto out_close_swms;
 324         }
 325         *additional_swms_ret = additional_swms;
 326         *num_additional_swms_ret = num_additional_swms - offset;
 327         ret = 0;
 328         goto out_globfree;
 329 out_close_swms:
 330         for (unsigned i = 0; i < num_additional_swms; i++)
 331                 wimlib_free(additional_swms[i]);
 332         free(additional_swms);
 333 out_globfree:
 334         globfree(&globbuf);
 335 out:
 336         return ret;
 337 }
 338
 339
 340 /* Extract one image, or all images, from a WIM file into a directory. */
 341 static int imagex_apply(int argc, const char **argv)
 342 {
 343         int c;
 344         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
 345                          WIMLIB_OPEN_FLAG_SPLIT_OK;
 346         int image;
 347         int num_images;
 348         WIMStruct *w;
 349         int ret;
 350         const char *wimfile;
 351         const char *dir;
 352         const char *image_num_or_name;
 353         int extract_flags = 0;
 354
 355         const char *swm_glob = NULL;
 356         WIMStruct **additional_swms = NULL;
 357         unsigned num_additional_swms = 0;
 358
 359         for_opt(c, apply_options) {
 360                 switch (c) {
 361                 case 'c':
 362                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 363                         break;
 364                 case 'h':
 365                         extract_flags |= WIMLIB_EXTRACT_FLAG_HARDLINK;
 366                         break;
 367                 case 's':
 368                         extract_flags |= WIMLIB_EXTRACT_FLAG_SYMLINK;
 369                         break;
 370                 case 'v':
 371                         extract_flags |= WIMLIB_EXTRACT_FLAG_VERBOSE;
 372                         break;
 373                 case 'r':
 374                         swm_glob = optarg;
 375                         break;
 376                 default:
 377                         usage(APPLY);
 378                         return -1;
 379                 }
 380         }
 381         argc -= optind;
 382         argv += optind;
 383         if (argc != 2 && argc != 3) {
 384                 usage(APPLY);
 385                 return -1;
 386         }
 387
 388         wimfile = argv[0];
 389         if (argc == 2) {
 390                 image_num_or_name = "1";
 391                 dir = argv[1];
 392         } else {
 393                 image_num_or_name = argv[1];
 394                 dir = argv[2];
 395         }
 396
 397         ret = wimlib_open_wim(wimfile, open_flags, &w);
 398         if (ret != 0)
 399                 return ret;
 400
 401         image = wimlib_resolve_image(w, image_num_or_name);
 402         ret = verify_image_exists(image);
 403         if (ret != 0)
 404                 goto out;
 405
 406         num_images = wimlib_get_num_images(w);
 407         if (argc == 2 && num_images != 1) {
 408                 imagex_error("`%s' contains %d images; Please select one "
 409                              "(or all)", wimfile, num_images);
 410                 usage(APPLY);
 411                 ret = -1;
 412                 goto out;
 413         }
 414
 415         if (swm_glob) {
 416                 ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
 417                                           &additional_swms,
 418                                           &num_additional_swms);
 419                 if (ret != 0)
 420                         goto out;
 421         }
 422
 423 #ifdef WITH_NTFS_3G
 424         struct stat stbuf;
 425
 426         ret = stat(dir, &stbuf);
 427         if (ret == 0) {
 428                 if (S_ISBLK(stbuf.st_mode) || S_ISREG(stbuf.st_mode)) {
 429                         const char *ntfs_device = dir;
 430                         printf("Applying image %d of `%s' to NTFS filesystem on `%s'\n",
 431                                image, wimfile, ntfs_device);
 432                         ret = wimlib_apply_image_to_ntfs_volume(w, image,
 433                                                                 ntfs_device,
 434                                                                 extract_flags,
 435                                                                 additional_swms,
 436                                                                 num_additional_swms);
 437                         goto out;
 438                 }
 439         } else {
 440                 if (errno != ENOENT) {
 441                         imagex_error_with_errno("Failed to stat `%s'", dir);
 442                         ret = -1;
 443                         goto out;
 444                 }
 445         }
 446 #endif
 447
 448         ret = wimlib_extract_image(w, image, dir, extract_flags,
 449                                    additional_swms, num_additional_swms);
 450 out:
 451         wimlib_free(w);
 452         if (additional_swms) {
 453                 for (unsigned i = 0; i < num_additional_swms; i++)
 454                         wimlib_free(additional_swms[i]);
 455                 free(additional_swms);
 456         }
 457         return ret;
 458 }
 459
 460 static int imagex_capture_or_append(int argc, const char **argv)
 461 {
 462         int c;
 463         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 464         int add_image_flags = 0;
 465         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 466         int compression_type = WIM_COMPRESSION_TYPE_XPRESS;
 467         const char *dir;
 468         const char *wimfile;
 469         const char *name;
 470         const char *desc;
 471         const char *flags_element = NULL;
 472         const char *config_file = NULL;
 473         char *config_str = NULL;
 474         size_t config_len = 0;
 475         WIMStruct *w = NULL;
 476         int ret;
 477         int cur_image;
 478         char *default_name;
 479         int cmd = strcmp(argv[0], "append") ? CAPTURE : APPEND;
 480
 481         for_opt(c, capture_or_append_options) {
 482                 switch (c) {
 483                 case 'b':
 484                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_BOOT;
 485                         break;
 486                 case 'c':
 487                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 488                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 489                         break;
 490                 case 'C':
 491                         config_file = optarg;
 492                         break;
 493                 case 'x':
 494                         compression_type = get_compression_type(optarg);
 495                         if (compression_type == WIM_COMPRESSION_TYPE_INVALID)
 496                                 return -1;
 497                         break;
 498                 case 'f':
 499                         flags_element = optarg;
 500                         break;
 501                 case 'L':
 502                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
 503                         break;
 504                 case 'v':
 505                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_VERBOSE;
 506                         write_flags |= WIMLIB_WRITE_FLAG_VERBOSE;
 507                         break;
 508                 default:
 509                         usage(cmd);
 510                         return -1;
 511                 }
 512         }
 513         argc -= optind;
 514         argv += optind;
 515         if (argc < 2 || argc > 4) {
 516                 usage(cmd);
 517                 return -1;
 518         }
 519         dir = argv[0];
 520         wimfile = argv[1];
 521
 522         char dir_copy[strlen(dir) + 1];
 523         memcpy(dir_copy, dir, strlen(dir) + 1);
 524         default_name = basename(dir_copy);
 525
 526         name = (argc >= 3) ? argv[2] : default_name;
 527         desc = (argc >= 4) ? argv[3] : NULL;
 528
 529         if (config_file) {
 530                 config_str = file_get_contents(config_file, &config_len);
 531                 if (!config_str)
 532                         return -1;
 533         }
 534
 535         if (cmd == APPEND)
 536                 ret = wimlib_open_wim(wimfile, open_flags, &w);
 537         else
 538                 ret = wimlib_create_new_wim(compression_type, &w);
 539         if (ret != 0)
 540                 goto out;
 541
 542 #ifdef WITH_NTFS_3G
 543         struct stat stbuf;
 544
 545         ret = stat(dir, &stbuf);
 546         if (ret == 0) {
 547                 if (S_ISBLK(stbuf.st_mode) || S_ISREG(stbuf.st_mode)) {
 548                         const char *ntfs_device = dir;
 549                         printf("Capturing WIM image NTFS filesystem on `%s'\n",
 550                                ntfs_device);
 551                         ret = wimlib_add_image_from_ntfs_volume(w, ntfs_device,
 552                                                                 name,
 553                                                                 config_str,
 554                                                                 config_len,
 555                                                                 add_image_flags);
 556                         goto out_write;
 557                 }
 558         } else {
 559                 if (errno != ENOENT) {
 560                         imagex_error_with_errno("Failed to stat `%s'", dir);
 561                         ret = -1;
 562                         goto out;
 563                 }
 564         }
 565 #endif
 566         ret = wimlib_add_image(w, dir, name, config_str, config_len,
 567                                add_image_flags);
 568
 569 out_write:
 570         if (ret != 0)
 571                 goto out;
 572         cur_image = wimlib_get_num_images(w);
 573         if (desc) {
 574                 ret = wimlib_set_image_descripton(w, cur_image, desc);
 575                 if (ret != 0)
 576                         goto out;
 577         }
 578         if (flags_element) {
 579                 ret = wimlib_set_image_flags(w, cur_image, flags_element);
 580                 if (ret != 0)
 581                         goto out;
 582         }
 583         if (cmd == APPEND)
 584                 ret = wimlib_overwrite(w, write_flags);
 585         else
 586                 ret = wimlib_write(w, wimfile, WIM_ALL_IMAGES, write_flags);
 587         if (ret != 0)
 588                 imagex_error("Failed to write the WIM file `%s'", wimfile);
 589 out:
 590         wimlib_free(w);
 591         free(config_str);
 592         return ret;
 593 }
 594
 595 /* Remove image(s) from a WIM. */
 596 static int imagex_delete(int argc, const char **argv)
 597 {
 598         int c;
 599         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 600         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 601         const char *wimfile;
 602         const char *image_num_or_name;
 603         WIMStruct *w;
 604         int image;
 605         int ret;
 606
 607         for_opt(c, delete_options) {
 608                 switch (c) {
 609                 case 'c':
 610                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 611                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 612                         break;
 613                 default:
 614                         usage(DELETE);
 615                         return -1;
 616                 }
 617         }
 618         argc -= optind;
 619         argv += optind;
 620
 621         if (argc != 2) {
 622                 if (argc < 1)
 623                         imagex_error("Must specify a WIM file");
 624                 if (argc < 2)
 625                         imagex_error("Must specify an image");
 626                 usage(DELETE);
 627                 return -1;
 628         }
 629         wimfile = argv[0];
 630         image_num_or_name = argv[1];
 631
 632         ret = wimlib_open_wim(wimfile, open_flags, &w);
 633         if (ret != 0)
 634                 return ret;
 635
 636         image = wimlib_resolve_image(w, image_num_or_name);
 637
 638         ret = verify_image_exists(image);
 639         if (ret != 0)
 640                 goto out;
 641
 642         ret = wimlib_delete_image(w, image);
 643         if (ret != 0) {
 644                 imagex_error("Failed to delete image from `%s'", wimfile);
 645                 goto out;
 646         }
 647
 648         ret = wimlib_overwrite(w, write_flags);
 649         if (ret != 0) {
 650                 imagex_error("Failed to write the file `%s' with image "
 651                              "deleted", wimfile);
 652         }
 653 out:
 654         wimlib_free(w);
 655         return ret;
 656 }
 657
 658 /* Print the files contained in an image(s) in a WIM file. */
 659 static int imagex_dir(int argc, const char **argv)
 660 {
 661         const char *wimfile;
 662         WIMStruct *w;
 663         int image;
 664         int ret;
 665         int num_images;
 666
 667         if (argc < 2) {
 668                 imagex_error("Must specify a WIM file");
 669                 usage(DIR);
 670                 return -1;
 671         }
 672         if (argc > 3) {
 673                 imagex_error("Too many arguments");
 674                 usage(DIR);
 675                 return -1;
 676         }
 677
 678         wimfile = argv[1];
 679         ret = wimlib_open_wim(wimfile, WIMLIB_OPEN_FLAG_SPLIT_OK, &w);
 680         if (ret != 0)
 681                 return ret;
 682
 683         if (argc == 3) {
 684                 image = wimlib_resolve_image(w, argv[2]);
 685                 ret = verify_image_exists(image);
 686                 if (ret != 0)
 687                         goto out;
 688         } else {
 689                 /* Image was not specified.  If the WIM only contains one image,
 690                  * choose that one; otherwise, print an error. */
 691                 num_images = wimlib_get_num_images(w);
 692                 if (num_images != 1) {
 693                         imagex_error("The file `%s' contains %d images; Please "
 694                                      "select one.", wimfile, num_images);
 695                         usage(DIR);
 696                         ret = -1;
 697                         goto out;
 698                 }
 699                 image = 1;
 700         }
 701
 702         ret = wimlib_print_files(w, image);
 703 out:
 704         wimlib_free(w);
 705         return ret;
 706 }
 707
 708 /* Exports one, or all, images from a WIM file to a new WIM file or an existing
 709  * WIM file. */
 710 static int imagex_export(int argc, const char **argv)
 711 {
 712         int c;
 713         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 714         int export_flags = 0;
 715         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 716         int compression_type;
 717         bool compression_type_specified = false;
 718         const char *src_wimfile;
 719         const char *src_image_num_or_name;
 720         const char *dest_wimfile;
 721         const char *dest_name;
 722         const char *dest_desc;
 723         WIMStruct *src_w = NULL;
 724         WIMStruct *dest_w = NULL;
 725         int ret;
 726         int image;
 727         struct stat stbuf;
 728         bool wim_is_new;
 729         const char *swm_glob = NULL;
 730         WIMStruct **additional_swms = NULL;
 731         unsigned num_additional_swms = 0;
 732
 733         for_opt(c, export_options) {
 734                 switch (c) {
 735                 case 'b':
 736                         export_flags |= WIMLIB_EXPORT_FLAG_BOOT;
 737                         break;
 738                 case 'c':
 739                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 740                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 741                         break;
 742                 case 'x':
 743                         compression_type = get_compression_type(optarg);
 744                         if (compression_type == WIM_COMPRESSION_TYPE_INVALID)
 745                                 return -1;
 746                         compression_type_specified = true;
 747                         break;
 748                 case 'r':
 749                         swm_glob = optarg;
 750                         break;
 751                 default:
 752                         usage(EXPORT);
 753                         return -1;
 754                 }
 755         }
 756         argc -= optind;
 757         argv += optind;
 758         if (argc < 3 || argc > 5) {
 759                 usage(EXPORT);
 760                 return -1;
 761         }
 762         src_wimfile           = argv[0];
 763         src_image_num_or_name = argv[1];
 764         dest_wimfile          = argv[2];
 765         dest_name             = (argc >= 4) ? argv[3] : NULL;
 766         dest_desc             = (argc >= 5) ? argv[4] : NULL;
 767         ret = wimlib_open_wim(src_wimfile,
 768                               open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK, &src_w);
 769         if (ret != 0)
 770                 return ret;
 771
 772         /* Determine if the destination is an existing file or not.
 773          * If so, we try to append the exported image(s) to it; otherwise, we
 774          * create a new WIM containing the exported image(s). */
 775         if (stat(dest_wimfile, &stbuf) == 0) {
 776                 int dest_ctype;
 777
 778                 wim_is_new = false;
 779                 /* Destination file exists. */
 780                 if (!S_ISREG(stbuf.st_mode) && !S_ISLNK(stbuf.st_mode)) {
 781                         imagex_error("`%s' is not a regular file",
 782                                         dest_wimfile);
 783                         ret = -1;
 784                         goto out;
 785                 }
 786                 ret = wimlib_open_wim(dest_wimfile, open_flags, &dest_w);
 787                 if (ret != 0)
 788                         goto out;
 789
 790                 dest_ctype = wimlib_get_compression_type(dest_w);
 791                 if (compression_type_specified
 792                     && compression_type != dest_ctype)
 793                 {
 794                         imagex_error("Cannot specify a compression type that is "
 795                                      "not the same as that used in the "
 796                                      "destination WIM");
 797                         ret = -1;
 798                         goto out;
 799                 }
 800                 compression_type = dest_ctype;
 801         } else {
 802                 wim_is_new = true;
 803                 /* dest_wimfile is not an existing file, so create a new WIM. */
 804                 if (!compression_type_specified)
 805                         compression_type = wimlib_get_compression_type(src_w);
 806                 if (errno == ENOENT) {
 807                         ret = wimlib_create_new_wim(compression_type, &dest_w);
 808                         if (ret != 0)
 809                                 goto out;
 810                 } else {
 811                         imagex_error_with_errno("Cannot stat file `%s'",
 812                                                 dest_wimfile);
 813                         ret = -1;
 814                         goto out;
 815                 }
 816         }
 817
 818         image = wimlib_resolve_image(src_w, src_image_num_or_name);
 819         ret = verify_image_exists(image);
 820         if (ret != 0)
 821                 goto out;
 822
 823         if (swm_glob) {
 824                 ret = open_swms_from_glob(swm_glob, src_wimfile, open_flags,
 825                                           &additional_swms,
 826                                           &num_additional_swms);
 827                 if (ret != 0)
 828                         goto out;
 829         }
 830
 831         ret = wimlib_export_image(src_w, image, dest_w, dest_name, dest_desc,
 832                                   export_flags, additional_swms,
 833                                   num_additional_swms);
 834         if (ret != 0)
 835                 goto out;
 836
 837
 838         if (wim_is_new)
 839                 ret = wimlib_write(dest_w, dest_wimfile, WIM_ALL_IMAGES,
 840                                    write_flags);
 841         else
 842                 ret = wimlib_overwrite(dest_w, write_flags);
 843 out:
 844         wimlib_free(src_w);
 845         wimlib_free(dest_w);
 846         if (additional_swms) {
 847                 for (unsigned i = 0; i < num_additional_swms; i++)
 848                         wimlib_free(additional_swms[i]);
 849                 free(additional_swms);
 850         }
 851         return ret;
 852 }
 853
 854 /* Prints information about a WIM file; also can mark an image as bootable,
 855  * change the name of an image, or change the description of an image. */
 856 static int imagex_info(int argc, const char **argv)
 857 {
 858         int c;
 859         bool boot         = false;
 860         bool check        = false;
 861         bool header       = false;
 862         bool lookup_table = false;
 863         bool xml          = false;
 864         bool metadata     = false;
 865         bool short_header = true;
 866         const char *xml_out_file = NULL;
 867         const char *wimfile;
 868         const char *image_num_or_name = "all";
 869         const char *new_name = NULL;
 870         const char *new_desc = NULL;
 871         WIMStruct *w;
 872         FILE *fp;
 873         int image;
 874         int ret;
 875         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
 876                          WIMLIB_OPEN_FLAG_SPLIT_OK;
 877         int part_number;
 878         int total_parts;
 879
 880         for_opt(c, info_options) {
 881                 switch (c) {
 882                 case 'b':
 883                         boot = true;
 884                         break;
 885                 case 'c':
 886                         check = true;
 887                         break;
 888                 case 'h':
 889                         header = true;
 890                         short_header = false;
 891                         break;
 892                 case 'l':
 893                         lookup_table = true;
 894                         short_header = false;
 895                         break;
 896                 case 'x':
 897                         xml = true;
 898                         short_header = false;
 899                         break;
 900                 case 'X':
 901                         xml_out_file = optarg;
 902                         short_header = false;
 903                         break;
 904                 case 'm':
 905                         metadata = true;
 906                         short_header = false;
 907                         break;
 908                 default:
 909                         usage(INFO);
 910                         return -1;
 911                 }
 912         }
 913
 914         argc -= optind;
 915         argv += optind;
 916         if (argc == 0 || argc > 4) {
 917                 usage(INFO);
 918                 return -1;
 919         }
 920         wimfile = argv[0];
 921         if (argc > 1) {
 922                 image_num_or_name = argv[1];
 923                 if (argc > 2) {
 924                         new_name = argv[2];
 925                         if (argc > 3) {
 926                                 new_desc = argv[3];
 927                         }
 928                 }
 929         }
 930
 931         if (check)
 932                 open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 933
 934         ret = wimlib_open_wim(wimfile, open_flags, &w);
 935         if (ret != 0)
 936                 return ret;
 937
 938         part_number = wimlib_get_part_number(w, &total_parts);
 939
 940         image = wimlib_resolve_image(w, image_num_or_name);
 941         if (image == WIM_NO_IMAGE && strcmp(image_num_or_name, "0") != 0) {
 942                 imagex_error("The image `%s' does not exist",
 943                                                 image_num_or_name);
 944                 if (boot)
 945                         imagex_error("If you would like to set the boot "
 946                                      "index to 0, specify image \"0\" with "
 947                                      "the --boot flag.");
 948                 ret = WIMLIB_ERR_INVALID_IMAGE;
 949                 goto out;
 950         }
 951
 952         if (image == WIM_ALL_IMAGES && wimlib_get_num_images(w) > 1) {
 953                 if (boot) {
 954                         imagex_error("Cannot specify the --boot flag "
 955                                      "without specifying a specific "
 956                                      "image in a multi-image WIM");
 957                         ret = WIMLIB_ERR_INVALID_IMAGE;
 958                         goto out;
 959                 }
 960                 if (new_name) {
 961                         imagex_error("Cannot specify the NEW_NAME "
 962                                      "without specifying a specific "
 963                                      "image in a multi-image WIM");
 964                         ret = WIMLIB_ERR_INVALID_IMAGE;
 965                         goto out;
 966                 }
 967         }
 968
 969         /* Operations that print information are separated from operations that
 970          * recreate the WIM file. */
 971         if (!new_name && !boot) {
 972
 973                 /* Read-only operations */
 974
 975                 if (image == WIM_NO_IMAGE) {
 976                         imagex_error("`%s' is not a valid image",
 977                                      image_num_or_name);
 978                         ret = WIMLIB_ERR_INVALID_IMAGE;
 979                         goto out;
 980                 }
 981
 982                 if (image == WIM_ALL_IMAGES && short_header)
 983                         wimlib_print_wim_information(w);
 984
 985                 if (header)
 986                         wimlib_print_header(w);
 987
 988                 if (lookup_table) {
 989                         if (total_parts != 1) {
 990                                 printf("Warning: Only showing the lookup table "
 991                                        "for part %d of a %d-part WIM.\n",
 992                                        part_number, total_parts);
 993                         }
 994                         wimlib_print_lookup_table(w);
 995                 }
 996
 997                 if (xml) {
 998                         ret = wimlib_extract_xml_data(w, stdout);
 999                         if (ret != 0)
1000                                 goto out;
1001                 }
1002
1003                 if (xml_out_file) {
1004                         fp = fopen(xml_out_file, "wb");
1005                         if (!fp) {
1006                                 imagex_error_with_errno("Failed to open the "
1007                                                         "file `%s' for "
1008                                                         "writing ",
1009                                                         xml_out_file);
1010                                 goto out;
1011                         }
1012                         ret = wimlib_extract_xml_data(w, fp);
1013                         if (fclose(fp) != 0) {
1014                                 imagex_error("Failed to close the file `%s'",
1015                                              xml_out_file);
1016                                 goto out;
1017                         }
1018
1019                         if (ret != 0)
1020                                 goto out;
1021                 }
1022
1023                 if (short_header)
1024                         wimlib_print_available_images(w, image);
1025
1026                 if (metadata) {
1027                         ret = wimlib_print_metadata(w, image);
1028                         if (ret != 0)
1029                                 goto out;
1030                 }
1031         } else {
1032
1033                 /* Modification operations */
1034
1035                 if (total_parts != 1) {
1036                         imagex_error("Modifying a split WIM is not supported.");
1037                         return -1;
1038                 }
1039                 if (image == WIM_ALL_IMAGES)
1040                         image = 1;
1041
1042                 if (image == WIM_NO_IMAGE && new_name) {
1043                         imagex_error("Cannot specify new_name (`%s') when "
1044                                      "using image 0", new_name);
1045                         return -1;
1046                 }
1047
1048                 if (boot) {
1049                         if (image == wimlib_get_boot_idx(w)) {
1050                                 printf("Image %d is already marked as "
1051                                        "bootable.\n", image);
1052                                 boot = false;
1053                         } else {
1054                                 printf("Marking image %d as bootable.\n",
1055                                        image);
1056                                 wimlib_set_boot_idx(w, image);
1057                         }
1058                 }
1059                 if (new_name) {
1060                         if (strcmp(wimlib_get_image_name(w, image),
1061                                                 new_name) == 0) {
1062                                 printf("Image %d is already named \"%s\".\n",
1063                                        image, new_name);
1064                                 new_name = NULL;
1065                         } else {
1066                                 printf("Changing the name of image %d to "
1067                                        "\"%s\".\n", image, new_name);
1068                                 ret = wimlib_set_image_name(w, image, new_name);
1069                                 if (ret != 0)
1070                                         goto out;
1071                         }
1072                 }
1073                 if (new_desc) {
1074                         const char *old_desc;
1075                         old_desc = wimlib_get_image_description(w, image);
1076                         if (old_desc && strcmp(old_desc, new_desc) == 0) {
1077                                 printf("The description of image %d is already "
1078                                        "\"%s\".\n", image, new_desc);
1079                                 new_desc = NULL;
1080                         } else {
1081                                 printf("Changing the description of image %d "
1082                                        "to \"%s\".\n", image, new_desc);
1083                                 ret = wimlib_set_image_descripton(w, image,
1084                                                                   new_desc);
1085                                 if (ret != 0)
1086                                         goto out;
1087                         }
1088                 }
1089
1090                 /* Only call wimlib_overwrite_xml_and_header() if something
1091                  * actually needs to be changed. */
1092                 if (boot || new_name || new_desc ||
1093                                 check != wimlib_has_integrity_table(w)) {
1094
1095                         ret = wimlib_overwrite_xml_and_header(w, check ?
1096                                         WIMLIB_WRITE_FLAG_CHECK_INTEGRITY |
1097                                         WIMLIB_WRITE_FLAG_SHOW_PROGRESS : 0);
1098                 } else {
1099                         printf("The file `%s' was not modified because nothing "
1100                                         "needed to be done.\n", wimfile);
1101                         ret = 0;
1102                 }
1103         }
1104 out:
1105         /*wimlib_free(w);*/
1106         return ret;
1107 }
1108
1109 /* Join split WIMs into one part WIM */
1110 static int imagex_join(int argc, const char **argv)
1111 {
1112         int c;
1113         int flags = WIMLIB_OPEN_FLAG_SPLIT_OK | WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
1114         const char *output_path;
1115
1116         for_opt(c, join_options) {
1117                 switch (c) {
1118                 case 'c':
1119                         flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1120                         break;
1121                 default:
1122                         goto err;
1123                 }
1124         }
1125         argc -= optind;
1126         argv += optind;
1127
1128         if (argc < 2) {
1129                 imagex_error("Must specify at least one split WIM (.swm) parts "
1130                              "to join");
1131                 goto err;
1132         }
1133         output_path = argv[0];
1134         return wimlib_join(++argv, --argc, output_path, flags);
1135 err:
1136         usage(JOIN);
1137         return -1;
1138 }
1139
1140 /* Mounts an image using a FUSE mount. */
1141 static int imagex_mount_rw_or_ro(int argc, const char **argv)
1142 {
1143         int c;
1144         int mount_flags = 0;
1145         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
1146                          WIMLIB_OPEN_FLAG_SPLIT_OK;
1147         const char *wimfile;
1148         const char *dir;
1149         WIMStruct *w;
1150         int image;
1151         int num_images;
1152         int ret;
1153         const char *swm_glob = NULL;
1154         WIMStruct **additional_swms = NULL;
1155         unsigned num_additional_swms = 0;
1156
1157         if (strcmp(argv[0], "mountrw") == 0)
1158                 mount_flags |= WIMLIB_MOUNT_FLAG_READWRITE;
1159
1160         for_opt(c, mount_options) {
1161                 switch (c) {
1162                 case 'c':
1163                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1164                         break;
1165                 case 'd':
1166                         mount_flags |= WIMLIB_MOUNT_FLAG_DEBUG;
1167                         break;
1168                 case 's':
1169                         if (strcasecmp(optarg, "none") == 0)
1170                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_NONE;
1171                         else if (strcasecmp(optarg, "xattr") == 0)
1172                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR;
1173                         else if (strcasecmp(optarg, "windows") == 0)
1174                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS;
1175                         else {
1176                                 imagex_error("Unknown stream interface \"%s\"", optarg);
1177                                 goto mount_usage;
1178                         }
1179                         break;
1180                 case 'r':
1181                         swm_glob = optarg;
1182                         break;
1183                 default:
1184                         goto mount_usage;
1185                 }
1186         }
1187         argc -= optind;
1188         argv += optind;
1189         if (argc != 2 && argc != 3)
1190                 goto mount_usage;
1191
1192         wimfile = argv[0];
1193
1194         ret = wimlib_open_wim(wimfile, open_flags, &w);
1195         if (ret != 0)
1196                 return ret;
1197
1198         if (swm_glob) {
1199                 ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
1200                                           &additional_swms,
1201                                           &num_additional_swms);
1202                 if (ret != 0)
1203                         goto out;
1204         }
1205
1206         if (argc == 2) {
1207                 image = 1;
1208                 num_images = wimlib_get_num_images(w);
1209                 if (num_images != 1) {
1210                         imagex_error("The file `%s' contains %d images; Please "
1211                                      "select one", wimfile, num_images);
1212                         usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
1213                                         ? MOUNTRW : MOUNT);
1214                         ret = WIMLIB_ERR_INVALID_IMAGE;
1215                         goto out;
1216                 }
1217                 dir = argv[1];
1218         } else {
1219                 image = wimlib_resolve_image(w, argv[1]);
1220                 dir = argv[2];
1221         }
1222
1223         ret = verify_image_exists_and_is_single(image);
1224         if (ret != 0)
1225                 goto out;
1226
1227         ret = wimlib_mount(w, image, dir, mount_flags, additional_swms,
1228                            num_additional_swms);
1229         if (ret != 0) {
1230                 imagex_error("Failed to mount image %d from `%s' on `%s'",
1231                              image, wimfile, dir);
1232
1233         }
1234 out:
1235         wimlib_free(w);
1236         if (additional_swms)
1237                 for (unsigned i = 0; i < num_additional_swms; i++)
1238                         wimlib_free(additional_swms[i]);
1239         return ret;
1240 mount_usage:
1241         usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
1242                         ? MOUNTRW : MOUNT);
1243         return -1;
1244 }
1245
1246 /* Split a WIM into a spanned set */
1247 static int imagex_split(int argc, const char **argv)
1248 {
1249         int c;
1250         int flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
1251         unsigned long part_size;
1252         char *tmp;
1253
1254         for_opt(c, split_options) {
1255                 switch (c) {
1256                 case 'c':
1257                         flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1258                         break;
1259                 default:
1260                         usage(SPLIT);
1261                         return -1;
1262                 }
1263         }
1264         argc -= optind;
1265         argv += optind;
1266
1267         if (argc != 3) {
1268                 usage(SPLIT);
1269                 return -1;
1270         }
1271         part_size = strtod(argv[2], &tmp) * (1 << 20);
1272         if (tmp == argv[2] || *tmp) {
1273                 imagex_error("Invalid part size \"%s\"", argv[2]);
1274                 imagex_error("The part size must be an integer or floating-point number of megabytes.");
1275                 return -1;
1276         }
1277         return wimlib_split(argv[0], argv[1], part_size, flags);
1278 }
1279
1280 /* Unmounts an image. */
1281 static int imagex_unmount(int argc, const char **argv)
1282 {
1283         int c;
1284         int unmount_flags = 0;
1285         int ret;
1286
1287         for_opt(c, unmount_options) {
1288                 switch (c) {
1289                 case 'c':
1290                         unmount_flags |= WIMLIB_UNMOUNT_FLAG_COMMIT;
1291                         break;
1292                 case 'C':
1293                         unmount_flags |= WIMLIB_UNMOUNT_FLAG_CHECK_INTEGRITY;
1294                         break;
1295                 default:
1296                         usage(UNMOUNT);
1297                         return -1;
1298                 }
1299         }
1300         argc -= optind;
1301         argv += optind;
1302         if (argc != 1) {
1303                 usage(UNMOUNT);
1304                 return -1;
1305         }
1306
1307         ret = wimlib_unmount(argv[0], unmount_flags);
1308         if (ret != 0)
1309                 imagex_error("Failed to unmount `%s'", argv[0]);
1310         return ret;
1311 }
1312
1313 struct imagex_command {
1314         const char *name;
1315         int (*func)(int , const char **);
1316         int cmd;
1317 };
1318
1319
1320 #define for_imagex_command(p) for (p = &imagex_commands[0]; \
1321                 p != &imagex_commands[ARRAY_LEN(imagex_commands)]; p++)
1322
1323 static const struct imagex_command imagex_commands[] = {
1324         {"append",  imagex_capture_or_append, APPEND},
1325         {"apply",   imagex_apply,             APPLY},
1326         {"capture", imagex_capture_or_append, CAPTURE},
1327         {"delete",  imagex_delete,            DELETE},
1328         {"dir",     imagex_dir,               DIR},
1329         {"export",  imagex_export,            EXPORT},
1330         {"info",    imagex_info,              INFO},
1331         {"join",    imagex_join,              JOIN},
1332         {"mount",   imagex_mount_rw_or_ro,    MOUNT},
1333         {"mountrw", imagex_mount_rw_or_ro,    MOUNTRW},
1334         {"split",   imagex_split,             SPLIT},
1335         {"unmount", imagex_unmount,           UNMOUNT},
1336 };
1337
1338 static void version()
1339 {
1340         static const char *s =
1341         "imagex (" PACKAGE ") " PACKAGE_VERSION "\n"
1342         "Copyright (C) 2012 Eric Biggers\n"
1343         "License GPLv3+; GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n"
1344         "This is free software: you are free to change and redistribute it.\n"
1345         "There is NO WARRANTY, to the extent permitted by law.\n"
1346         "\n"
1347         "Report bugs to "PACKAGE_BUGREPORT".\n";
1348         fputs(s, stdout);
1349 }
1350
1351
1352 static void help_or_version(int argc, const char **argv)
1353 {
1354         int i;
1355         const char *p;
1356         const struct imagex_command *cmd;
1357
1358         for (i = 1; i < argc; i++) {
1359                 p = argv[i];
1360                 if (*p == '-')
1361                         p++;
1362                 else
1363                         continue;
1364                 if (*p == '-')
1365                         p++;
1366                 if (strcmp(p, "help") == 0) {
1367                         for_imagex_command(cmd) {
1368                                 if (strcmp(cmd->name, argv[1]) == 0) {
1369                                         usage(cmd->cmd);
1370                                         exit(0);
1371                                 }
1372                         }
1373                         usage_all();
1374                         exit(0);
1375                 }
1376                 if (strcmp(p, "version") == 0) {
1377                         version();
1378                         exit(0);
1379                 }
1380         }
1381 }
1382
1383
1384 static void usage(int cmd_type)
1385 {
1386         const struct imagex_command *cmd;
1387         puts("IMAGEX: Usage:");
1388         fputs(usage_strings[cmd_type], stdout);
1389         for_imagex_command(cmd)
1390                 if (cmd->cmd == cmd_type)
1391                         printf("\nTry `man imagex-%s' for more details.\n",
1392                                cmd->name);
1393 }
1394
1395 static void usage_all()
1396 {
1397         puts("IMAGEX: Usage:");
1398         for (int i = 0; i < ARRAY_LEN(usage_strings); i++)
1399                 fputs(usage_strings[i], stdout);
1400         static const char *extra =
1401 "    imagex --help\n"
1402 "    imagex --version\n"
1403 "\n"
1404 "    The compression TYPE may be \"maximum\", \"fast\", or \"none\".\n"
1405 "\n"
1406 "    Try `man imagex' for more information.\n"
1407         ;
1408         fputs(extra, stdout);
1409 }
1410
1411
1412 int main(int argc, const char **argv)
1413 {
1414         const struct imagex_command *cmd;
1415         int ret;
1416
1417         if (argc < 2) {
1418                 imagex_error("No command specified");
1419                 usage_all();
1420                 return 1;
1421         }
1422
1423         help_or_version(argc, argv);
1424         argc--;
1425         argv++;
1426
1427         wimlib_set_print_errors(true);
1428
1429         for_imagex_command(cmd) {
1430                 if (strcmp(cmd->name, *argv) == 0) {
1431                         ret = cmd->func(argc, argv);
1432                         if (ret > 0) {
1433                                 imagex_error("Exiting with error code %d:\n"
1434                                              "       %s.", ret,
1435                                              wimlib_get_error_string(ret));
1436                                 if (ret == WIMLIB_ERR_NTFS_3G)
1437                                         imagex_error_with_errno("errno");
1438                         }
1439                         return ret;
1440                 }
1441         }
1442
1443         imagex_error("Unrecognized command: `%s'", argv[0]);
1444         usage_all();
1445         return 1;
1446 }