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 const char *path_basename(const char *path)
 203 {
 204         const char *p = path;
 205         while (*p)
 206                 p++;
 207         p--;
 208
 209         /* Trailing slashes. */
 210         while ((p != path - 1) && *p == '/')
 211                 p--;
 212
 213         while ((p != path - 1) && *p != '/')
 214                 p--;
 215
 216         return p + 1;
 217 }
 218
 219
 220 static int verify_image_exists(int image)
 221 {
 222         if (image == WIM_NO_IMAGE) {
 223                 imagex_error("Not a valid image");
 224                 return WIMLIB_ERR_INVALID_IMAGE;
 225         }
 226         return 0;
 227 }
 228
 229 static int verify_image_is_single(int image)
 230 {
 231         if (image == WIM_ALL_IMAGES) {
 232                 imagex_error("Cannot specify all images for this action");
 233                 return WIMLIB_ERR_INVALID_IMAGE;
 234         }
 235         return 0;
 236 }
 237
 238 static int verify_image_exists_and_is_single(int image)
 239 {
 240         int ret;
 241         ret = verify_image_exists(image);
 242         if (ret == 0)
 243                 ret = verify_image_is_single(image);
 244         return ret;
 245 }
 246
 247 static int get_compression_type(const char *optarg)
 248 {
 249         if (strcasecmp(optarg, "maximum") == 0 || strcasecmp(optarg, "lzx") == 0)
 250                 return WIM_COMPRESSION_TYPE_LZX;
 251         else if (strcasecmp(optarg, "fast") == 0 || strcasecmp(optarg, "xpress") == 0)
 252                 return WIM_COMPRESSION_TYPE_XPRESS;
 253         else if (strcasecmp(optarg, "none") == 0)
 254                 return WIM_COMPRESSION_TYPE_NONE;
 255         else {
 256                 imagex_error("Invalid compression type `%s'! Must be "
 257                              "\"maximum\", \"fast\", or \"none\".", optarg);
 258                 return WIM_COMPRESSION_TYPE_INVALID;
 259         }
 260 }
 261
 262 static char *file_get_contents(const char *filename, size_t *len_ret)
 263 {
 264         struct stat stbuf;
 265         char *buf;
 266         size_t len;
 267         FILE *fp;
 268
 269         if (stat(filename, &stbuf) != 0) {
 270                 imagex_error_with_errno("Failed to stat the file `%s'", filename);
 271                 return NULL;
 272         }
 273         len = stbuf.st_size;
 274
 275         fp = fopen(filename, "rb");
 276         if (!fp) {
 277                 imagex_error_with_errno("Failed to open the file `%s'", filename);
 278                 return NULL;
 279         }
 280
 281         buf = malloc(len);
 282         if (!buf) {
 283                 imagex_error("Failed to allocate buffer of %zu bytes to hold "
 284                              "contents of file `%s'", len, filename);
 285                 goto out_fclose;
 286         }
 287         if (fread(buf, 1, len, fp) != len) {
 288                 imagex_error_with_errno("Failed to read %lu bytes from the "
 289                                         "file `%s'", len, filename);
 290                 goto out_free_buf;
 291         }
 292         *len_ret = len;
 293         return buf;
 294 out_free_buf:
 295         free(buf);
 296 out_fclose:
 297         fclose(fp);
 298         return NULL;
 299 }
 300
 301 static int open_swms_from_glob(const char *swm_glob,
 302                                const char *first_part,
 303                                int open_flags,
 304                                WIMStruct ***additional_swms_ret,
 305                                unsigned *num_additional_swms_ret)
 306 {
 307         unsigned num_additional_swms = 0;
 308         WIMStruct **additional_swms = NULL;
 309         glob_t globbuf;
 310         int ret;
 311
 312         ret = glob(swm_glob, GLOB_ERR | GLOB_NOSORT, NULL, &globbuf);
 313         if (ret != 0) {
 314                 if (ret == GLOB_NOMATCH) {
 315                         imagex_error("Found no files for glob \"%s\"",
 316                                      swm_glob);
 317                 } else {
 318                         imagex_error_with_errno("Failed to process glob "
 319                                                 "\"%s\"", swm_glob);
 320                 }
 321                 ret = -1;
 322                 goto out;
 323         }
 324         num_additional_swms = globbuf.gl_pathc;
 325         additional_swms = calloc(num_additional_swms, sizeof(additional_swms[0]));
 326         if (!additional_swms) {
 327                 imagex_error("Out of memory");
 328                 ret = -1;
 329                 goto out_globfree;
 330         }
 331         unsigned offset = 0;
 332         for (unsigned i = 0; i < num_additional_swms; i++) {
 333                 if (strcmp(globbuf.gl_pathv[i], first_part) == 0) {
 334                         offset++;
 335                         continue;
 336                 }
 337                 ret = wimlib_open_wim(globbuf.gl_pathv[i],
 338                                       open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK,
 339                                       &additional_swms[i - offset]);
 340                 if (ret != 0)
 341                         goto out_close_swms;
 342         }
 343         *additional_swms_ret = additional_swms;
 344         *num_additional_swms_ret = num_additional_swms - offset;
 345         ret = 0;
 346         goto out_globfree;
 347 out_close_swms:
 348         for (unsigned i = 0; i < num_additional_swms; i++)
 349                 wimlib_free(additional_swms[i]);
 350         free(additional_swms);
 351 out_globfree:
 352         globfree(&globbuf);
 353 out:
 354         return ret;
 355 }
 356
 357
 358 /* Extract one image, or all images, from a WIM file into a directory. */
 359 static int imagex_apply(int argc, const char **argv)
 360 {
 361         int c;
 362         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
 363                          WIMLIB_OPEN_FLAG_SPLIT_OK;
 364         int image;
 365         int num_images;
 366         WIMStruct *w;
 367         int ret;
 368         const char *wimfile;
 369         const char *dir;
 370         const char *image_num_or_name;
 371         int extract_flags = 0;
 372
 373         const char *swm_glob = NULL;
 374         WIMStruct **additional_swms = NULL;
 375         unsigned num_additional_swms = 0;
 376
 377         for_opt(c, apply_options) {
 378                 switch (c) {
 379                 case 'c':
 380                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 381                         break;
 382                 case 'h':
 383                         extract_flags |= WIMLIB_EXTRACT_FLAG_HARDLINK;
 384                         break;
 385                 case 's':
 386                         extract_flags |= WIMLIB_EXTRACT_FLAG_SYMLINK;
 387                         break;
 388                 case 'v':
 389                         extract_flags |= WIMLIB_EXTRACT_FLAG_VERBOSE;
 390                         break;
 391                 case 'r':
 392                         swm_glob = optarg;
 393                         break;
 394                 default:
 395                         usage(APPLY);
 396                         return -1;
 397                 }
 398         }
 399         argc -= optind;
 400         argv += optind;
 401         if (argc != 2 && argc != 3) {
 402                 usage(APPLY);
 403                 return -1;
 404         }
 405
 406         wimfile = argv[0];
 407         if (argc == 2) {
 408                 image_num_or_name = "1";
 409                 dir = argv[1];
 410         } else {
 411                 image_num_or_name = argv[1];
 412                 dir = argv[2];
 413         }
 414
 415         ret = wimlib_open_wim(wimfile, open_flags, &w);
 416         if (ret != 0)
 417                 return ret;
 418
 419         image = wimlib_resolve_image(w, image_num_or_name);
 420         ret = verify_image_exists(image);
 421         if (ret != 0)
 422                 goto out;
 423
 424         num_images = wimlib_get_num_images(w);
 425         if (argc == 2 && num_images != 1) {
 426                 imagex_error("`%s' contains %d images; Please select one "
 427                              "(or all)", wimfile, num_images);
 428                 usage(APPLY);
 429                 ret = -1;
 430                 goto out;
 431         }
 432
 433         if (swm_glob) {
 434                 ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
 435                                           &additional_swms,
 436                                           &num_additional_swms);
 437                 if (ret != 0)
 438                         goto out;
 439         }
 440
 441 #ifdef WITH_NTFS_3G
 442         struct stat stbuf;
 443
 444         ret = stat(dir, &stbuf);
 445         if (ret == 0) {
 446                 if (S_ISBLK(stbuf.st_mode) || S_ISREG(stbuf.st_mode)) {
 447                         const char *ntfs_device = dir;
 448                         printf("Applying image %d of `%s' to NTFS filesystem on `%s'\n",
 449                                image, wimfile, ntfs_device);
 450                         ret = wimlib_apply_image_to_ntfs_volume(w, image,
 451                                                                 ntfs_device,
 452                                                                 extract_flags,
 453                                                                 additional_swms,
 454                                                                 num_additional_swms);
 455                         goto out;
 456                 }
 457         } else {
 458                 if (errno != ENOENT) {
 459                         imagex_error_with_errno("Failed to stat `%s'", dir);
 460                         ret = -1;
 461                         goto out;
 462                 }
 463         }
 464 #endif
 465
 466         ret = wimlib_extract_image(w, image, dir, extract_flags,
 467                                    additional_swms, num_additional_swms);
 468 out:
 469         wimlib_free(w);
 470         if (additional_swms)
 471                 for (unsigned i = 0; i < num_additional_swms; i++)
 472                         wimlib_free(additional_swms[i]);
 473         return ret;
 474 }
 475
 476 static int imagex_capture_or_append(int argc, const char **argv)
 477 {
 478         int c;
 479         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 480         int add_image_flags = 0;
 481         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 482         int compression_type = WIM_COMPRESSION_TYPE_XPRESS;
 483         const char *dir;
 484         const char *wimfile;
 485         const char *name;
 486         const char *desc;
 487         const char *flags_element = NULL;
 488         const char *config_file = NULL;
 489         char *config_str = NULL;
 490         size_t config_len = 0;
 491         WIMStruct *w = NULL;
 492         int ret;
 493         int cur_image;
 494         char *default_name;
 495         int cmd = strcmp(argv[0], "append") ? CAPTURE : APPEND;
 496
 497         for_opt(c, capture_or_append_options) {
 498                 switch (c) {
 499                 case 'b':
 500                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_BOOT;
 501                         break;
 502                 case 'c':
 503                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 504                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 505                         break;
 506                 case 'C':
 507                         config_file = optarg;
 508                         break;
 509                 case 'x':
 510                         compression_type = get_compression_type(optarg);
 511                         if (compression_type == WIM_COMPRESSION_TYPE_INVALID)
 512                                 return -1;
 513                         break;
 514                 case 'f':
 515                         flags_element = optarg;
 516                         break;
 517                 case 'L':
 518                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
 519                         break;
 520                 case 'v':
 521                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_VERBOSE;
 522                         write_flags |= WIMLIB_WRITE_FLAG_VERBOSE;
 523                         break;
 524                 default:
 525                         usage(cmd);
 526                         return -1;
 527                 }
 528         }
 529         argc -= optind;
 530         argv += optind;
 531         if (argc < 2 || argc > 4) {
 532                 usage(cmd);
 533                 return -1;
 534         }
 535         dir = argv[0];
 536         wimfile = argv[1];
 537
 538         char dir_copy[strlen(dir) + 1];
 539         memcpy(dir_copy, dir, strlen(dir) + 1);
 540         default_name = basename(dir_copy);
 541
 542         name = (argc >= 3) ? argv[2] : default_name;
 543         desc = (argc >= 4) ? argv[3] : NULL;
 544
 545         if (config_file) {
 546                 config_str = file_get_contents(config_file, &config_len);
 547                 if (!config_str)
 548                         return -1;
 549         }
 550
 551         if (cmd == APPEND)
 552                 ret = wimlib_open_wim(wimfile, open_flags, &w);
 553         else
 554                 ret = wimlib_create_new_wim(compression_type, &w);
 555         if (ret != 0)
 556                 goto out;
 557
 558 #ifdef WITH_NTFS_3G
 559         struct stat stbuf;
 560
 561         ret = stat(dir, &stbuf);
 562         if (ret == 0) {
 563                 if (S_ISBLK(stbuf.st_mode) || S_ISREG(stbuf.st_mode)) {
 564                         const char *ntfs_device = dir;
 565                         printf("Capturing WIM image NTFS filesystem on `%s'\n",
 566                                ntfs_device);
 567                         ret = wimlib_add_image_from_ntfs_volume(w, ntfs_device,
 568                                                                 name,
 569                                                                 config_str,
 570                                                                 config_len,
 571                                                                 add_image_flags);
 572                         goto out_write;
 573                 }
 574         } else {
 575                 if (errno != ENOENT) {
 576                         imagex_error_with_errno("Failed to stat `%s'", dir);
 577                         ret = -1;
 578                         goto out;
 579                 }
 580         }
 581 #endif
 582         ret = wimlib_add_image(w, dir, name, config_str, config_len,
 583                                add_image_flags);
 584
 585 out_write:
 586         if (ret != 0)
 587                 goto out;
 588         cur_image = wimlib_get_num_images(w);
 589         if (desc) {
 590                 ret = wimlib_set_image_descripton(w, cur_image, desc);
 591                 if (ret != 0)
 592                         goto out;
 593         }
 594         if (flags_element) {
 595                 ret = wimlib_set_image_flags(w, cur_image, flags_element);
 596                 if (ret != 0)
 597                         goto out;
 598         }
 599         if (cmd == APPEND)
 600                 ret = wimlib_overwrite(w, write_flags);
 601         else
 602                 ret = wimlib_write(w, wimfile, WIM_ALL_IMAGES, write_flags);
 603         if (ret != 0)
 604                 imagex_error("Failed to write the WIM file `%s'", wimfile);
 605 out:
 606         wimlib_free(w);
 607         free(config_str);
 608         return ret;
 609 }
 610
 611 /* Remove image(s) from a WIM. */
 612 static int imagex_delete(int argc, const char **argv)
 613 {
 614         int c;
 615         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 616         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 617         const char *wimfile;
 618         const char *image_num_or_name;
 619         WIMStruct *w;
 620         int image;
 621         int ret;
 622
 623         for_opt(c, delete_options) {
 624                 switch (c) {
 625                 case 'c':
 626                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 627                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 628                         break;
 629                 default:
 630                         usage(DELETE);
 631                         return -1;
 632                 }
 633         }
 634         argc -= optind;
 635         argv += optind;
 636
 637         if (argc != 2) {
 638                 if (argc < 1)
 639                         imagex_error("Must specify a WIM file");
 640                 if (argc < 2)
 641                         imagex_error("Must specify an image");
 642                 usage(DELETE);
 643                 return -1;
 644         }
 645         wimfile = argv[0];
 646         image_num_or_name = argv[1];
 647
 648         ret = wimlib_open_wim(wimfile, open_flags, &w);
 649         if (ret != 0)
 650                 return ret;
 651
 652         image = wimlib_resolve_image(w, image_num_or_name);
 653
 654         ret = verify_image_exists(image);
 655         if (ret != 0)
 656                 goto out;
 657
 658         ret = wimlib_delete_image(w, image);
 659         if (ret != 0) {
 660                 imagex_error("Failed to delete image from `%s'", wimfile);
 661                 goto out;
 662         }
 663
 664         ret = wimlib_overwrite(w, write_flags);
 665         if (ret != 0) {
 666                 imagex_error("Failed to write the file `%s' with image "
 667                              "deleted", wimfile);
 668         }
 669 out:
 670         wimlib_free(w);
 671         return ret;
 672 }
 673
 674 /* Print the files contained in an image(s) in a WIM file. */
 675 static int imagex_dir(int argc, const char **argv)
 676 {
 677         const char *wimfile;
 678         WIMStruct *w;
 679         int image;
 680         int ret;
 681         int num_images;
 682
 683         if (argc < 2) {
 684                 imagex_error("Must specify a WIM file");
 685                 usage(DIR);
 686                 return -1;
 687         }
 688         if (argc > 3) {
 689                 imagex_error("Too many arguments");
 690                 usage(DIR);
 691                 return -1;
 692         }
 693
 694         wimfile = argv[1];
 695         ret = wimlib_open_wim(wimfile, WIMLIB_OPEN_FLAG_SPLIT_OK, &w);
 696         if (ret != 0)
 697                 return ret;
 698
 699         if (argc == 3) {
 700                 image = wimlib_resolve_image(w, argv[2]);
 701                 ret = verify_image_exists(image);
 702                 if (ret != 0)
 703                         goto out;
 704         } else {
 705                 /* Image was not specified.  If the WIM only contains one image,
 706                  * choose that one; otherwise, print an error. */
 707                 num_images = wimlib_get_num_images(w);
 708                 if (num_images != 1) {
 709                         imagex_error("The file `%s' contains %d images; Please "
 710                                      "select one.", wimfile, num_images);
 711                         usage(DIR);
 712                         ret = -1;
 713                         goto out;
 714                 }
 715                 image = 1;
 716         }
 717
 718         ret = wimlib_print_files(w, image);
 719 out:
 720         wimlib_free(w);
 721         return ret;
 722 }
 723
 724 /* Exports one, or all, images from a WIM file to a new WIM file or an existing
 725  * WIM file. */
 726 static int imagex_export(int argc, const char **argv)
 727 {
 728         int c;
 729         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 730         int export_flags = 0;
 731         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 732         int compression_type;
 733         bool compression_type_specified = false;
 734         const char *src_wimfile;
 735         const char *src_image_num_or_name;
 736         const char *dest_wimfile;
 737         const char *dest_name;
 738         const char *dest_desc;
 739         WIMStruct *src_w = NULL;
 740         WIMStruct *dest_w = NULL;
 741         int ret;
 742         int image;
 743         struct stat stbuf;
 744         bool wim_is_new;
 745         const char *swm_glob = NULL;
 746         WIMStruct **additional_swms = NULL;
 747         unsigned num_additional_swms = 0;
 748
 749         for_opt(c, export_options) {
 750                 switch (c) {
 751                 case 'b':
 752                         export_flags |= WIMLIB_EXPORT_FLAG_BOOT;
 753                         break;
 754                 case 'c':
 755                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 756                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 757                         break;
 758                 case 'x':
 759                         compression_type = get_compression_type(optarg);
 760                         if (compression_type == WIM_COMPRESSION_TYPE_INVALID)
 761                                 return -1;
 762                         compression_type_specified = true;
 763                         break;
 764                 case 'r':
 765                         swm_glob = optarg;
 766                         break;
 767                 default:
 768                         usage(EXPORT);
 769                         return -1;
 770                 }
 771         }
 772         argc -= optind;
 773         argv += optind;
 774         if (argc < 3 || argc > 5) {
 775                 usage(EXPORT);
 776                 return -1;
 777         }
 778         src_wimfile           = argv[0];
 779         src_image_num_or_name = argv[1];
 780         dest_wimfile          = argv[2];
 781         dest_name             = (argc >= 4) ? argv[3] : NULL;
 782         dest_desc             = (argc >= 5) ? argv[4] : NULL;
 783         ret = wimlib_open_wim(src_wimfile,
 784                               open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK, &src_w);
 785         if (ret != 0)
 786                 return ret;
 787
 788         /* Determine if the destination is an existing file or not.
 789          * If so, we try to append the exported image(s) to it; otherwise, we
 790          * create a new WIM containing the exported image(s). */
 791         if (stat(dest_wimfile, &stbuf) == 0) {
 792                 int dest_ctype;
 793
 794                 wim_is_new = false;
 795                 /* Destination file exists. */
 796                 if (!S_ISREG(stbuf.st_mode) && !S_ISLNK(stbuf.st_mode)) {
 797                         imagex_error("`%s' is not a regular file",
 798                                         dest_wimfile);
 799                         ret = -1;
 800                         goto out;
 801                 }
 802                 ret = wimlib_open_wim(dest_wimfile, open_flags, &dest_w);
 803                 if (ret != 0)
 804                         goto out;
 805
 806                 dest_ctype = wimlib_get_compression_type(dest_w);
 807                 if (compression_type_specified
 808                     && compression_type != dest_ctype)
 809                 {
 810                         imagex_error("Cannot specify a compression type that is "
 811                                      "not the same as that used in the "
 812                                      "destination WIM");
 813                         ret = -1;
 814                         goto out;
 815                 }
 816                 compression_type = dest_ctype;
 817         } else {
 818                 wim_is_new = true;
 819                 /* dest_wimfile is not an existing file, so create a new WIM. */
 820                 if (!compression_type_specified)
 821                         compression_type = wimlib_get_compression_type(src_w);
 822                 if (errno == ENOENT) {
 823                         ret = wimlib_create_new_wim(compression_type, &dest_w);
 824                         if (ret != 0)
 825                                 goto out;
 826                 } else {
 827                         imagex_error_with_errno("Cannot stat file `%s'",
 828                                                 dest_wimfile);
 829                         ret = -1;
 830                         goto out;
 831                 }
 832         }
 833
 834         image = wimlib_resolve_image(src_w, src_image_num_or_name);
 835         ret = verify_image_exists(image);
 836         if (ret != 0)
 837                 goto out;
 838
 839         if (swm_glob) {
 840                 ret = open_swms_from_glob(swm_glob, src_wimfile, open_flags,
 841                                           &additional_swms,
 842                                           &num_additional_swms);
 843                 if (ret != 0)
 844                         goto out;
 845         }
 846
 847         ret = wimlib_export_image(src_w, image, dest_w, dest_name, dest_desc,
 848                                   export_flags, additional_swms,
 849                                   num_additional_swms);
 850         if (ret != 0)
 851                 goto out;
 852
 853
 854         if (wim_is_new)
 855                 ret = wimlib_write(dest_w, dest_wimfile, WIM_ALL_IMAGES,
 856                                    write_flags);
 857         else
 858                 ret = wimlib_overwrite(dest_w, write_flags);
 859 out:
 860         wimlib_free(src_w);
 861         wimlib_free(dest_w);
 862         if (additional_swms)
 863                 for (unsigned i = 0; i < num_additional_swms; i++)
 864                         wimlib_free(additional_swms[i]);
 865         return ret;
 866 }
 867
 868 /* Prints information about a WIM file; also can mark an image as bootable,
 869  * change the name of an image, or change the description of an image. */
 870 static int imagex_info(int argc, const char **argv)
 871 {
 872         int c;
 873         bool boot         = false;
 874         bool check        = false;
 875         bool header       = false;
 876         bool lookup_table = false;
 877         bool xml          = false;
 878         bool metadata     = false;
 879         bool short_header = true;
 880         const char *xml_out_file = NULL;
 881         const char *wimfile;
 882         const char *image_num_or_name = "all";
 883         const char *new_name = NULL;
 884         const char *new_desc = NULL;
 885         WIMStruct *w;
 886         FILE *fp;
 887         int image;
 888         int ret;
 889         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
 890                          WIMLIB_OPEN_FLAG_SPLIT_OK;
 891         int part_number;
 892         int total_parts;
 893
 894         for_opt(c, info_options) {
 895                 switch (c) {
 896                 case 'b':
 897                         boot = true;
 898                         break;
 899                 case 'c':
 900                         check = true;
 901                         break;
 902                 case 'h':
 903                         header = true;
 904                         short_header = false;
 905                         break;
 906                 case 'l':
 907                         lookup_table = true;
 908                         short_header = false;
 909                         break;
 910                 case 'x':
 911                         xml = true;
 912                         short_header = false;
 913                         break;
 914                 case 'X':
 915                         xml_out_file = optarg;
 916                         short_header = false;
 917                         break;
 918                 case 'm':
 919                         metadata = true;
 920                         short_header = false;
 921                         break;
 922                 default:
 923                         usage(INFO);
 924                         return -1;
 925                 }
 926         }
 927
 928         argc -= optind;
 929         argv += optind;
 930         if (argc == 0 || argc > 4) {
 931                 usage(INFO);
 932                 return -1;
 933         }
 934         wimfile = argv[0];
 935         if (argc > 1) {
 936                 image_num_or_name = argv[1];
 937                 if (argc > 2) {
 938                         new_name = argv[2];
 939                         if (argc > 3) {
 940                                 new_desc = argv[3];
 941                         }
 942                 }
 943         }
 944
 945         if (check)
 946                 open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 947
 948         ret = wimlib_open_wim(wimfile, open_flags, &w);
 949         if (ret != 0)
 950                 return ret;
 951
 952         part_number = wimlib_get_part_number(w, &total_parts);
 953
 954         image = wimlib_resolve_image(w, image_num_or_name);
 955         if (image == WIM_NO_IMAGE && strcmp(image_num_or_name, "0") != 0) {
 956                 imagex_error("The image `%s' does not exist",
 957                                                 image_num_or_name);
 958                 if (boot)
 959                         imagex_error("If you would like to set the boot "
 960                                      "index to 0, specify image \"0\" with "
 961                                      "the --boot flag.");
 962                 ret = WIMLIB_ERR_INVALID_IMAGE;
 963                 goto out;
 964         }
 965
 966         if (image == WIM_ALL_IMAGES && wimlib_get_num_images(w) > 1) {
 967                 if (boot) {
 968                         imagex_error("Cannot specify the --boot flag "
 969                                      "without specifying a specific "
 970                                      "image in a multi-image WIM");
 971                         ret = WIMLIB_ERR_INVALID_IMAGE;
 972                         goto out;
 973                 }
 974                 if (new_name) {
 975                         imagex_error("Cannot specify the NEW_NAME "
 976                                      "without specifying a specific "
 977                                      "image in a multi-image WIM");
 978                         ret = WIMLIB_ERR_INVALID_IMAGE;
 979                         goto out;
 980                 }
 981         }
 982
 983         /* Operations that print information are separated from operations that
 984          * recreate the WIM file. */
 985         if (!new_name && !boot) {
 986
 987                 /* Read-only operations */
 988
 989                 if (image == WIM_NO_IMAGE) {
 990                         imagex_error("`%s' is not a valid image",
 991                                      image_num_or_name);
 992                         ret = WIMLIB_ERR_INVALID_IMAGE;
 993                         goto out;
 994                 }
 995
 996                 if (image == WIM_ALL_IMAGES && short_header)
 997                         wimlib_print_wim_information(w);
 998
 999                 if (header)
1000                         wimlib_print_header(w);
1001
1002                 if (lookup_table) {
1003                         if (total_parts != 1) {
1004                                 printf("Warning: Only showing the lookup table "
1005                                        "for part %d of a %d-part WIM.\n",
1006                                        part_number, total_parts);
1007                         }
1008                         wimlib_print_lookup_table(w);
1009                 }
1010
1011                 if (xml) {
1012                         ret = wimlib_extract_xml_data(w, stdout);
1013                         if (ret != 0)
1014                                 goto out;
1015                 }
1016
1017                 if (xml_out_file) {
1018                         fp = fopen(xml_out_file, "wb");
1019                         if (!fp) {
1020                                 imagex_error_with_errno("Failed to open the "
1021                                                         "file `%s' for "
1022                                                         "writing ",
1023                                                         xml_out_file);
1024                                 goto out;
1025                         }
1026                         ret = wimlib_extract_xml_data(w, fp);
1027                         if (fclose(fp) != 0) {
1028                                 imagex_error("Failed to close the file `%s'",
1029                                              xml_out_file);
1030                                 goto out;
1031                         }
1032
1033                         if (ret != 0)
1034                                 goto out;
1035                 }
1036
1037                 if (short_header)
1038                         wimlib_print_available_images(w, image);
1039
1040                 if (metadata) {
1041                         ret = wimlib_print_metadata(w, image);
1042                         if (ret != 0)
1043                                 goto out;
1044                 }
1045         } else {
1046
1047                 /* Modification operations */
1048
1049                 if (total_parts != 1) {
1050                         imagex_error("Modifying a split WIM is not supported.");
1051                         return -1;
1052                 }
1053                 if (image == WIM_ALL_IMAGES)
1054                         image = 1;
1055
1056                 if (image == WIM_NO_IMAGE && new_name) {
1057                         imagex_error("Cannot specify new_name (`%s') when "
1058                                      "using image 0", new_name);
1059                         return -1;
1060                 }
1061
1062                 if (boot) {
1063                         if (image == wimlib_get_boot_idx(w)) {
1064                                 printf("Image %d is already marked as "
1065                                        "bootable.\n", image);
1066                                 boot = false;
1067                         } else {
1068                                 printf("Marking image %d as bootable.\n",
1069                                        image);
1070                                 wimlib_set_boot_idx(w, image);
1071                         }
1072                 }
1073                 if (new_name) {
1074                         if (strcmp(wimlib_get_image_name(w, image),
1075                                                 new_name) == 0) {
1076                                 printf("Image %d is already named \"%s\".\n",
1077                                        image, new_name);
1078                                 new_name = NULL;
1079                         } else {
1080                                 printf("Changing the name of image %d to "
1081                                        "\"%s\".\n", image, new_name);
1082                                 ret = wimlib_set_image_name(w, image, new_name);
1083                                 if (ret != 0)
1084                                         goto out;
1085                         }
1086                 }
1087                 if (new_desc) {
1088                         const char *old_desc;
1089                         old_desc = wimlib_get_image_description(w, image);
1090                         if (old_desc && strcmp(old_desc, new_desc) == 0) {
1091                                 printf("The description of image %d is already "
1092                                        "\"%s\".\n", image, new_desc);
1093                                 new_desc = NULL;
1094                         } else {
1095                                 printf("Changing the description of image %d "
1096                                        "to \"%s\".\n", image, new_desc);
1097                                 ret = wimlib_set_image_descripton(w, image,
1098                                                                   new_desc);
1099                                 if (ret != 0)
1100                                         goto out;
1101                         }
1102                 }
1103
1104                 /* Only call wimlib_overwrite_xml_and_header() if something
1105                  * actually needs to be changed. */
1106                 if (boot || new_name || new_desc ||
1107                                 check != wimlib_has_integrity_table(w)) {
1108
1109                         ret = wimlib_overwrite_xml_and_header(w, check ?
1110                                         WIMLIB_WRITE_FLAG_CHECK_INTEGRITY |
1111                                         WIMLIB_WRITE_FLAG_SHOW_PROGRESS : 0);
1112                 } else {
1113                         printf("The file `%s' was not modified because nothing "
1114                                         "needed to be done.\n", wimfile);
1115                         ret = 0;
1116                 }
1117         }
1118 out:
1119         wimlib_free(w);
1120         return ret;
1121 }
1122
1123 /* Join split WIMs into one part WIM */
1124 static int imagex_join(int argc, const char **argv)
1125 {
1126         int c;
1127         int flags = WIMLIB_OPEN_FLAG_SPLIT_OK | WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
1128         const char *output_path;
1129
1130         for_opt(c, join_options) {
1131                 switch (c) {
1132                 case 'c':
1133                         flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1134                         break;
1135                 default:
1136                         goto err;
1137                 }
1138         }
1139         argc -= optind;
1140         argv += optind;
1141
1142         if (argc < 2) {
1143                 imagex_error("Must specify at least one split WIM (.swm) parts "
1144                              "to join");
1145                 goto err;
1146         }
1147         output_path = argv[0];
1148         return wimlib_join(++argv, --argc, output_path, flags);
1149 err:
1150         usage(JOIN);
1151         return -1;
1152 }
1153
1154 /* Mounts an image using a FUSE mount. */
1155 static int imagex_mount_rw_or_ro(int argc, const char **argv)
1156 {
1157         int c;
1158         int mount_flags = 0;
1159         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
1160                          WIMLIB_OPEN_FLAG_SPLIT_OK;
1161         const char *wimfile;
1162         const char *dir;
1163         WIMStruct *w;
1164         int image;
1165         int num_images;
1166         int ret;
1167         const char *swm_glob = NULL;
1168         WIMStruct **additional_swms = NULL;
1169         unsigned num_additional_swms = 0;
1170
1171         if (strcmp(argv[0], "mountrw") == 0)
1172                 mount_flags |= WIMLIB_MOUNT_FLAG_READWRITE;
1173
1174         for_opt(c, mount_options) {
1175                 switch (c) {
1176                 case 'c':
1177                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1178                         break;
1179                 case 'd':
1180                         mount_flags |= WIMLIB_MOUNT_FLAG_DEBUG;
1181                         break;
1182                 case 's':
1183                         if (strcasecmp(optarg, "none") == 0)
1184                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_NONE;
1185                         else if (strcasecmp(optarg, "xattr") == 0)
1186                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR;
1187                         else if (strcasecmp(optarg, "windows") == 0)
1188                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS;
1189                         else {
1190                                 imagex_error("Unknown stream interface \"%s\"", optarg);
1191                                 goto mount_usage;
1192                         }
1193                         break;
1194                 case 'r':
1195                         swm_glob = optarg;
1196                         break;
1197                 default:
1198                         goto mount_usage;
1199                 }
1200         }
1201         argc -= optind;
1202         argv += optind;
1203         if (argc != 2 && argc != 3)
1204                 goto mount_usage;
1205
1206         wimfile = argv[0];
1207
1208         ret = wimlib_open_wim(wimfile, open_flags, &w);
1209         if (ret != 0)
1210                 return ret;
1211
1212         if (swm_glob) {
1213                 ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
1214                                           &additional_swms,
1215                                           &num_additional_swms);
1216                 if (ret != 0)
1217                         goto out;
1218         }
1219
1220         if (argc == 2) {
1221                 image = 1;
1222                 num_images = wimlib_get_num_images(w);
1223                 if (num_images != 1) {
1224                         imagex_error("The file `%s' contains %d images; Please "
1225                                      "select one", wimfile, num_images);
1226                         usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
1227                                         ? MOUNTRW : MOUNT);
1228                         ret = WIMLIB_ERR_INVALID_IMAGE;
1229                         goto out;
1230                 }
1231                 dir = argv[1];
1232         } else {
1233                 image = wimlib_resolve_image(w, argv[1]);
1234                 dir = argv[2];
1235         }
1236
1237         ret = verify_image_exists_and_is_single(image);
1238         if (ret != 0)
1239                 goto out;
1240
1241         ret = wimlib_mount(w, image, dir, mount_flags, additional_swms,
1242                            num_additional_swms);
1243         if (ret != 0) {
1244                 imagex_error("Failed to mount image %d from `%s' on `%s'",
1245                              image, wimfile, dir);
1246
1247         }
1248 out:
1249         wimlib_free(w);
1250         if (additional_swms)
1251                 for (unsigned i = 0; i < num_additional_swms; i++)
1252                         wimlib_free(additional_swms[i]);
1253         return ret;
1254 mount_usage:
1255         usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
1256                         ? MOUNTRW : MOUNT);
1257         return -1;
1258 }
1259
1260 /* Split a WIM into a spanned set */
1261 static int imagex_split(int argc, const char **argv)
1262 {
1263         int c;
1264         int flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
1265         unsigned long part_size;
1266         char *tmp;
1267
1268         for_opt(c, split_options) {
1269                 switch (c) {
1270                 case 'c':
1271                         flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1272                         break;
1273                 default:
1274                         usage(SPLIT);
1275                         return -1;
1276                 }
1277         }
1278         argc -= optind;
1279         argv += optind;
1280
1281         if (argc != 3) {
1282                 usage(SPLIT);
1283                 return -1;
1284         }
1285         part_size = strtod(argv[2], &tmp) * (1 << 20);
1286         if (tmp == argv[2] || *tmp) {
1287                 imagex_error("Invalid part size \"%s\"", argv[2]);
1288                 imagex_error("The part size must be an integer or floating-point number of megabytes.");
1289                 return -1;
1290         }
1291         return wimlib_split(argv[0], argv[1], part_size, flags);
1292 }
1293
1294 /* Unmounts an image. */
1295 static int imagex_unmount(int argc, const char **argv)
1296 {
1297         int c;
1298         int unmount_flags = 0;
1299         int ret;
1300
1301         for_opt(c, unmount_options) {
1302                 switch (c) {
1303                 case 'c':
1304                         unmount_flags |= WIMLIB_UNMOUNT_FLAG_COMMIT;
1305                         break;
1306                 case 'C':
1307                         unmount_flags |= WIMLIB_UNMOUNT_FLAG_CHECK_INTEGRITY;
1308                         break;
1309                 default:
1310                         usage(UNMOUNT);
1311                         return -1;
1312                 }
1313         }
1314         argc -= optind;
1315         argv += optind;
1316         if (argc != 1) {
1317                 usage(UNMOUNT);
1318                 return -1;
1319         }
1320
1321         ret = wimlib_unmount(argv[0], unmount_flags);
1322         if (ret != 0)
1323                 imagex_error("Failed to unmount `%s'", argv[0]);
1324         return ret;
1325 }
1326
1327 struct imagex_command {
1328         const char *name;
1329         int (*func)(int , const char **);
1330         int cmd;
1331 };
1332
1333
1334 #define for_imagex_command(p) for (p = &imagex_commands[0]; \
1335                 p != &imagex_commands[ARRAY_LEN(imagex_commands)]; p++)
1336
1337 static const struct imagex_command imagex_commands[] = {
1338         {"append",  imagex_capture_or_append, APPEND},
1339         {"apply",   imagex_apply,             APPLY},
1340         {"capture", imagex_capture_or_append, CAPTURE},
1341         {"delete",  imagex_delete,            DELETE},
1342         {"dir",     imagex_dir,               DIR},
1343         {"export",  imagex_export,            EXPORT},
1344         {"info",    imagex_info,              INFO},
1345         {"join",    imagex_join,              JOIN},
1346         {"mount",   imagex_mount_rw_or_ro,    MOUNT},
1347         {"mountrw", imagex_mount_rw_or_ro,    MOUNTRW},
1348         {"split",   imagex_split,             SPLIT},
1349         {"unmount", imagex_unmount,           UNMOUNT},
1350 };
1351
1352 static void version()
1353 {
1354         static const char *s =
1355         "imagex (" PACKAGE ") " PACKAGE_VERSION "\n"
1356         "Copyright (C) 2012 Eric Biggers\n"
1357         "License GPLv3+; GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n"
1358         "This is free software: you are free to change and redistribute it.\n"
1359         "There is NO WARRANTY, to the extent permitted by law.\n"
1360         "\n"
1361         "Report bugs to "PACKAGE_BUGREPORT".\n";
1362         fputs(s, stdout);
1363 }
1364
1365
1366 static void help_or_version(int argc, const char **argv)
1367 {
1368         int i;
1369         const char *p;
1370         const struct imagex_command *cmd;
1371
1372         for (i = 1; i < argc; i++) {
1373                 p = argv[i];
1374                 if (*p == '-')
1375                         p++;
1376                 else
1377                         continue;
1378                 if (*p == '-')
1379                         p++;
1380                 if (strcmp(p, "help") == 0) {
1381                         for_imagex_command(cmd) {
1382                                 if (strcmp(cmd->name, argv[1]) == 0) {
1383                                         usage(cmd->cmd);
1384                                         exit(0);
1385                                 }
1386                         }
1387                         usage_all();
1388                         exit(0);
1389                 }
1390                 if (strcmp(p, "version") == 0) {
1391                         version();
1392                         exit(0);
1393                 }
1394         }
1395 }
1396
1397
1398 static void usage(int cmd_type)
1399 {
1400         const struct imagex_command *cmd;
1401         puts("IMAGEX: Usage:");
1402         fputs(usage_strings[cmd_type], stdout);
1403         for_imagex_command(cmd)
1404                 if (cmd->cmd == cmd_type)
1405                         printf("\nTry `man imagex-%s' for more details.\n",
1406                                cmd->name);
1407 }
1408
1409 static void usage_all()
1410 {
1411         puts("IMAGEX: Usage:");
1412         for (int i = 0; i < ARRAY_LEN(usage_strings); i++)
1413                 fputs(usage_strings[i], stdout);
1414         static const char *extra =
1415 "    imagex --help\n"
1416 "    imagex --version\n"
1417 "\n"
1418 "    The compression TYPE may be \"maximum\", \"fast\", or \"none\".\n"
1419 "\n"
1420 "    Try `man imagex' for more information.\n"
1421         ;
1422         fputs(extra, stdout);
1423 }
1424
1425
1426 int main(int argc, const char **argv)
1427 {
1428         const struct imagex_command *cmd;
1429         int ret;
1430
1431         if (argc < 2) {
1432                 imagex_error("No command specified");
1433                 usage_all();
1434                 return 1;
1435         }
1436
1437         help_or_version(argc, argv);
1438         argc--;
1439         argv++;
1440
1441         wimlib_set_print_errors(true);
1442
1443         for_imagex_command(cmd) {
1444                 if (strcmp(cmd->name, *argv) == 0) {
1445                         ret = cmd->func(argc, argv);
1446                         if (ret > 0) {
1447                                 imagex_error("Exiting with error code %d:\n"
1448                                              "       %s.", ret,
1449                                              wimlib_get_error_string(ret));
1450                                 if (ret == WIMLIB_ERR_NTFS_3G)
1451                                         imagex_error_with_errno("errno");
1452                         }
1453                         return ret;
1454                 }
1455         }
1456
1457         imagex_error("Unrecognized command: `%s'", argv[0]);
1458         usage_all();
1459         return 1;
1460 }