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 <limits.h>
  35 #include <sys/stat.h>
  36 #include <unistd.h>
  37 #include <inttypes.h>
  38
  39 #define ARRAY_LEN(array) (sizeof(array) / sizeof(array[0]))
  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         OPTIMIZE,
  57         SPLIT,
  58         UNMOUNT,
  59 };
  60
  61 static void usage(int cmd_type);
  62 static void usage_all();
  63
  64 static const char *usage_strings[] = {
  65 [APPEND] =
  66 "imagex append (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
  67 "                     [DESCRIPTION] [--boot] [--check] [--flags EDITION_ID]\n"
  68 "                     [--verbose] [--dereference] [--config=FILE]\n"
  69 "                     [--threads=NUM_THREADS] [--rebuild]\n",
  70 [APPLY] =
  71 "imagex apply WIMFILE [IMAGE_NUM | IMAGE_NAME | all]\n"
  72 "                    (DIRECTORY | NTFS_VOLUME) [--check] [--hardlink]\n"
  73 "                    [--symlink] [--verbose] [--ref=\"GLOB\"]\n",
  74 [CAPTURE] =
  75 "imagex capture (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
  76 "                      [DESCRIPTION] [--boot] [--check] [--compress=TYPE]\n"
  77 "                      [--flags EDITION_ID] [--verbose] [--dereference]\n"
  78 "                      [--config=FILE] [--threads=NUM_THREADS]\n",
  79 [DELETE] =
  80 "imagex delete WIMFILE (IMAGE_NUM | IMAGE_NAME | all) [--check]\n",
  81 [DIR] =
  82 "imagex dir WIMFILE (IMAGE_NUM | IMAGE_NAME | all)\n",
  83 [EXPORT] =
  84 "imagex export SRC_WIMFILE (SRC_IMAGE_NUM | SRC_IMAGE_NAME | all ) \n"
  85 "              DEST_WIMFILE [DEST_IMAGE_NAME] [DEST_IMAGE_DESCRIPTION]\n"
  86 "              [--boot] [--check] [--compress=TYPE] [--ref=\"GLOB\"]\n"
  87 "              [--threads=NUM_THREADS] [--rebuild]\n",
  88 [INFO] =
  89 "imagex info WIMFILE [IMAGE_NUM | IMAGE_NAME] [NEW_NAME]\n"
  90 "                   [NEW_DESC] [--boot] [--check] [--header] [--lookup-table]\n"
  91 "                   [--xml] [--extract-xml FILE] [--metadata]\n",
  92 [JOIN] =
  93 "imagex join [--check] WIMFILE SPLIT_WIM...\n",
  94 [MOUNT] =
  95 "imagex mount WIMFILE (IMAGE_NUM | IMAGE_NAME) DIRECTORY\n"
  96 "                    [--check] [--debug] [--streams-interface=INTERFACE]\n"
  97 "                    [--ref=\"GLOB\"]\n",
  98 [MOUNTRW] =
  99 "imagex mountrw WIMFILE [IMAGE_NUM | IMAGE_NAME] DIRECTORY\n"
 100 "                      [--check] [--debug] [--streams-interface=INTERFACE]\n",
 101 [OPTIMIZE] =
 102 "imagex optimize WIMFILE [--check] [--recompress]\n",
 103 [SPLIT] =
 104 "imagex split WIMFILE SPLIT_WIMFILE PART_SIZE_MB [--check]\n",
 105 [UNMOUNT] =
 106 "imagex unmount DIRECTORY [--commit] [--check]\n",
 107 };
 108
 109 static const struct option common_options[] = {
 110         {"help", 0, NULL, 'h'},
 111         {"version", 0, NULL, 'v'},
 112         {NULL, 0, NULL, 0},
 113 };
 114
 115 static const struct option apply_options[] = {
 116         {"check",    no_argument,       NULL, 'c'},
 117         {"hardlink", no_argument,       NULL, 'h'},
 118         {"symlink",  no_argument,       NULL, 's'},
 119         {"verbose",  no_argument,       NULL, 'v'},
 120         {"ref",      required_argument, NULL, 'r'},
 121         {NULL, 0, NULL, 0},
 122 };
 123 static const struct option capture_or_append_options[] = {
 124         {"boot",        no_argument,       NULL, 'b'},
 125         {"check",       no_argument,       NULL, 'c'},
 126         {"compress",    required_argument, NULL, 'x'},
 127         {"config",      required_argument, NULL, 'C'},
 128         {"dereference", no_argument,       NULL, 'L'},
 129         {"flags",       required_argument, NULL, 'f'},
 130         {"verbose",     no_argument,       NULL, 'v'},
 131         {"threads",     required_argument, NULL, 't'},
 132         {"rebuild",     no_argument,       NULL, 'R'},
 133         {NULL, 0, NULL, 0},
 134 };
 135 static const struct option delete_options[] = {
 136         {"check", no_argument, NULL, 'c'},
 137         {NULL, 0, NULL, 0},
 138 };
 139
 140 static const struct option export_options[] = {
 141         {"boot",       no_argument,       NULL, 'b'},
 142         {"check",      no_argument,       NULL, 'c'},
 143         {"compress",   required_argument, NULL, 'x'},
 144         {"ref",        required_argument, NULL, 'r'},
 145         {"threads",    required_argument, NULL, 't'},
 146         {"rebuild",    no_argument,       NULL, 'R'},
 147         {NULL, 0, NULL, 0},
 148 };
 149
 150 static const struct option info_options[] = {
 151         {"boot",         no_argument, NULL, 'b'},
 152         {"check",        no_argument, NULL, 'c'},
 153         {"extract-xml",  required_argument, NULL, 'X'},
 154         {"header",       no_argument, NULL, 'h'},
 155         {"lookup-table", no_argument, NULL, 'l'},
 156         {"metadata",     no_argument, NULL, 'm'},
 157         {"xml",          no_argument, NULL, 'x'},
 158         {NULL, 0, NULL, 0},
 159 };
 160
 161 static const struct option join_options[] = {
 162         {"check", no_argument, NULL, 'c'},
 163         {NULL, 0, NULL, 0},
 164 };
 165
 166 static const struct option mount_options[] = {
 167         {"check", no_argument, NULL, 'c'},
 168         {"debug", no_argument, NULL, 'd'},
 169         {"streams-interface", required_argument, NULL, 's'},
 170         {"ref",      required_argument, NULL, 'r'},
 171         {NULL, 0, NULL, 0},
 172 };
 173
 174 static const struct option optimize_options[] = {
 175         {"check",      no_argument, NULL, 'c'},
 176         {"recompress", no_argument, NULL, 'r'},
 177         {NULL, 0, NULL, 0},
 178 };
 179
 180 static const struct option split_options[] = {
 181         {"check", no_argument, NULL, 'c'},
 182         {NULL, 0, NULL, 0},
 183 };
 184
 185 static const struct option unmount_options[] = {
 186         {"commit", no_argument, NULL, 'c'},
 187         {"check", no_argument, NULL, 'C'},
 188         {NULL, 0, NULL, 0},
 189 };
 190
 191
 192
 193 /* Print formatted error message to stderr. */
 194 static void imagex_error(const char *format, ...)
 195 {
 196         va_list va;
 197         va_start(va, format);
 198         fputs("ERROR: ", stderr);
 199         vfprintf(stderr, format, va);
 200         putc('\n', stderr);
 201         va_end(va);
 202 }
 203
 204 /* Print formatted error message to stderr. */
 205 static void imagex_error_with_errno(const char *format, ...)
 206 {
 207         int errno_save = errno;
 208         va_list va;
 209         va_start(va, format);
 210         fputs("ERROR: ", stderr);
 211         vfprintf(stderr, format, va);
 212         fprintf(stderr, ": %s\n", strerror(errno_save));
 213         va_end(va);
 214 }
 215
 216 static int verify_image_exists(int image, const char *image_name,
 217                                const char *wim_name)
 218 {
 219         if (image == WIM_NO_IMAGE) {
 220                 imagex_error("\"%s\" is not a valid image in `%s'!\n"
 221                              "       Please specify a 1-based imagex index or "
 222                              "image name.\n"
 223                              "       You may use `imagex info' to list the images "
 224                              "contained in a WIM.",
 225                              image_name, wim_name);
 226                 return -1;
 227         }
 228         return 0;
 229 }
 230
 231 static int verify_image_is_single(int image)
 232 {
 233         if (image == WIM_ALL_IMAGES) {
 234                 imagex_error("Cannot specify all images for this action!");
 235                 return -1;
 236         }
 237         return 0;
 238 }
 239
 240 static int verify_image_exists_and_is_single(int image, const char *image_name,
 241                                              const char *wim_name)
 242 {
 243         int ret;
 244         ret = verify_image_exists(image, image_name, wim_name);
 245         if (ret == 0)
 246                 ret = verify_image_is_single(image);
 247         return ret;
 248 }
 249
 250 static int get_compression_type(const char *optarg)
 251 {
 252         if (strcasecmp(optarg, "maximum") == 0 || strcasecmp(optarg, "lzx") == 0)
 253                 return WIM_COMPRESSION_TYPE_LZX;
 254         else if (strcasecmp(optarg, "fast") == 0 || strcasecmp(optarg, "xpress") == 0)
 255                 return WIM_COMPRESSION_TYPE_XPRESS;
 256         else if (strcasecmp(optarg, "none") == 0)
 257                 return WIM_COMPRESSION_TYPE_NONE;
 258         else {
 259                 imagex_error("Invalid compression type `%s'! Must be "
 260                              "\"maximum\", \"fast\", or \"none\".", optarg);
 261                 return WIM_COMPRESSION_TYPE_INVALID;
 262         }
 263 }
 264
 265 static off_t file_get_size(const char *filename)
 266 {
 267         struct stat st;
 268         if (stat(filename, &st) == 0)
 269                 return st.st_size;
 270         else
 271                 return (off_t)-1;
 272 }
 273
 274 static char *file_get_contents(const char *filename, size_t *len_ret)
 275 {
 276         struct stat stbuf;
 277         char *buf;
 278         size_t len;
 279         FILE *fp;
 280
 281         if (stat(filename, &stbuf) != 0) {
 282                 imagex_error_with_errno("Failed to stat the file `%s'", filename);
 283                 return NULL;
 284         }
 285         len = stbuf.st_size;
 286
 287         fp = fopen(filename, "rb");
 288         if (!fp) {
 289                 imagex_error_with_errno("Failed to open the file `%s'", filename);
 290                 return NULL;
 291         }
 292
 293         buf = malloc(len);
 294         if (!buf) {
 295                 imagex_error("Failed to allocate buffer of %zu bytes to hold "
 296                              "contents of file `%s'", len, filename);
 297                 goto out_fclose;
 298         }
 299         if (fread(buf, 1, len, fp) != len) {
 300                 imagex_error_with_errno("Failed to read %lu bytes from the "
 301                                         "file `%s'", len, filename);
 302                 goto out_free_buf;
 303         }
 304         *len_ret = len;
 305         return buf;
 306 out_free_buf:
 307         free(buf);
 308 out_fclose:
 309         fclose(fp);
 310         return NULL;
 311 }
 312
 313 static int file_writable(const char *path)
 314 {
 315         int ret;
 316         ret = access(path, F_OK | W_OK);
 317         if (ret != 0)
 318                 imagex_error_with_errno("Can't modify `%s'", path);
 319         return ret;
 320 }
 321
 322 static int open_swms_from_glob(const char *swm_glob,
 323                                const char *first_part,
 324                                int open_flags,
 325                                WIMStruct ***additional_swms_ret,
 326                                unsigned *num_additional_swms_ret)
 327 {
 328         unsigned num_additional_swms = 0;
 329         WIMStruct **additional_swms = NULL;
 330         glob_t globbuf;
 331         int ret;
 332
 333         ret = glob(swm_glob, GLOB_ERR | GLOB_NOSORT, NULL, &globbuf);
 334         if (ret != 0) {
 335                 if (ret == GLOB_NOMATCH) {
 336                         imagex_error("Found no files for glob \"%s\"",
 337                                      swm_glob);
 338                 } else {
 339                         imagex_error_with_errno("Failed to process glob "
 340                                                 "\"%s\"", swm_glob);
 341                 }
 342                 ret = -1;
 343                 goto out;
 344         }
 345         num_additional_swms = globbuf.gl_pathc;
 346         additional_swms = calloc(num_additional_swms, sizeof(additional_swms[0]));
 347         if (!additional_swms) {
 348                 imagex_error("Out of memory");
 349                 ret = -1;
 350                 goto out_globfree;
 351         }
 352         unsigned offset = 0;
 353         for (unsigned i = 0; i < num_additional_swms; i++) {
 354                 if (strcmp(globbuf.gl_pathv[i], first_part) == 0) {
 355                         offset++;
 356                         continue;
 357                 }
 358                 ret = wimlib_open_wim(globbuf.gl_pathv[i],
 359                                       open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK,
 360                                       &additional_swms[i - offset]);
 361                 if (ret != 0)
 362                         goto out_close_swms;
 363         }
 364         *additional_swms_ret = additional_swms;
 365         *num_additional_swms_ret = num_additional_swms - offset;
 366         ret = 0;
 367         goto out_globfree;
 368 out_close_swms:
 369         for (unsigned i = 0; i < num_additional_swms; i++)
 370                 wimlib_free(additional_swms[i]);
 371         free(additional_swms);
 372 out_globfree:
 373         globfree(&globbuf);
 374 out:
 375         return ret;
 376 }
 377
 378
 379 static unsigned parse_num_threads(const char *optarg)
 380 {
 381         char *tmp;
 382         unsigned nthreads = strtoul(optarg, &tmp, 10);
 383         if (nthreads == UINT_MAX || *tmp || tmp == optarg) {
 384                 imagex_error("Number of threads must be a non-negative integer!");
 385                 return UINT_MAX;
 386         } else {
 387                 return nthreads;
 388         }
 389 }
 390
 391
 392 /* Extract one image, or all images, from a WIM file into a directory. */
 393 static int imagex_apply(int argc, const char **argv)
 394 {
 395         int c;
 396         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
 397                          WIMLIB_OPEN_FLAG_SPLIT_OK;
 398         int image;
 399         int num_images;
 400         WIMStruct *w;
 401         int ret;
 402         const char *wimfile;
 403         const char *dir;
 404         const char *image_num_or_name;
 405         int extract_flags = 0;
 406
 407         const char *swm_glob = NULL;
 408         WIMStruct **additional_swms = NULL;
 409         unsigned num_additional_swms = 0;
 410
 411         for_opt(c, apply_options) {
 412                 switch (c) {
 413                 case 'c':
 414                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 415                         break;
 416                 case 'h':
 417                         extract_flags |= WIMLIB_EXTRACT_FLAG_HARDLINK;
 418                         break;
 419                 case 's':
 420                         extract_flags |= WIMLIB_EXTRACT_FLAG_SYMLINK;
 421                         break;
 422                 case 'v':
 423                         extract_flags |= WIMLIB_EXTRACT_FLAG_VERBOSE;
 424                         break;
 425                 case 'r':
 426                         swm_glob = optarg;
 427                         break;
 428                 default:
 429                         usage(APPLY);
 430                         return -1;
 431                 }
 432         }
 433         argc -= optind;
 434         argv += optind;
 435         if (argc != 2 && argc != 3) {
 436                 usage(APPLY);
 437                 return -1;
 438         }
 439
 440         wimfile = argv[0];
 441         if (argc == 2) {
 442                 image_num_or_name = "1";
 443                 dir = argv[1];
 444         } else {
 445                 image_num_or_name = argv[1];
 446                 dir = argv[2];
 447         }
 448
 449         ret = wimlib_open_wim(wimfile, open_flags, &w);
 450         if (ret != 0)
 451                 return ret;
 452
 453         image = wimlib_resolve_image(w, image_num_or_name);
 454         ret = verify_image_exists(image, image_num_or_name, wimfile);
 455         if (ret != 0)
 456                 goto out;
 457
 458         num_images = wimlib_get_num_images(w);
 459         if (argc == 2 && num_images != 1) {
 460                 imagex_error("`%s' contains %d images; Please select one "
 461                              "(or all)", wimfile, num_images);
 462                 usage(APPLY);
 463                 ret = -1;
 464                 goto out;
 465         }
 466
 467         if (swm_glob) {
 468                 ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
 469                                           &additional_swms,
 470                                           &num_additional_swms);
 471                 if (ret != 0)
 472                         goto out;
 473         }
 474
 475 #ifdef WITH_NTFS_3G
 476         struct stat stbuf;
 477
 478         ret = stat(dir, &stbuf);
 479         if (ret == 0) {
 480                 if (S_ISBLK(stbuf.st_mode) || S_ISREG(stbuf.st_mode)) {
 481                         const char *ntfs_device = dir;
 482                         printf("Applying image %d of `%s' to NTFS filesystem on `%s'\n",
 483                                image, wimfile, ntfs_device);
 484                         ret = wimlib_apply_image_to_ntfs_volume(w, image,
 485                                                                 ntfs_device,
 486                                                                 extract_flags,
 487                                                                 additional_swms,
 488                                                                 num_additional_swms);
 489                         goto out;
 490                 }
 491         } else {
 492                 if (errno != ENOENT) {
 493                         imagex_error_with_errno("Failed to stat `%s'", dir);
 494                         ret = -1;
 495                         goto out;
 496                 }
 497         }
 498 #endif
 499
 500         ret = wimlib_extract_image(w, image, dir, extract_flags,
 501                                    additional_swms, num_additional_swms);
 502 out:
 503         wimlib_free(w);
 504         if (additional_swms) {
 505                 for (unsigned i = 0; i < num_additional_swms; i++)
 506                         wimlib_free(additional_swms[i]);
 507                 free(additional_swms);
 508         }
 509         return ret;
 510 }
 511
 512 static int imagex_capture_or_append(int argc, const char **argv)
 513 {
 514         int c;
 515         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 516         int add_image_flags = WIMLIB_ADD_IMAGE_FLAG_SHOW_PROGRESS;
 517         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 518         int compression_type = WIM_COMPRESSION_TYPE_XPRESS;
 519         const char *dir;
 520         const char *wimfile;
 521         const char *name;
 522         const char *desc;
 523         const char *flags_element = NULL;
 524         const char *config_file = NULL;
 525         char *config_str = NULL;
 526         size_t config_len = 0;
 527         WIMStruct *w = NULL;
 528         int ret;
 529         int cur_image;
 530         char *default_name;
 531         int cmd = strcmp(argv[0], "append") ? CAPTURE : APPEND;
 532         unsigned num_threads = 0;
 533
 534         for_opt(c, capture_or_append_options) {
 535                 switch (c) {
 536                 case 'b':
 537                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_BOOT;
 538                         break;
 539                 case 'c':
 540                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 541                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 542                         break;
 543                 case 'C':
 544                         config_file = optarg;
 545                         break;
 546                 case 'x':
 547                         compression_type = get_compression_type(optarg);
 548                         if (compression_type == WIM_COMPRESSION_TYPE_INVALID)
 549                                 return -1;
 550                         break;
 551                 case 'f':
 552                         flags_element = optarg;
 553                         break;
 554                 case 'L':
 555                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
 556                         break;
 557                 case 'v':
 558                         add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_VERBOSE;
 559                         write_flags |= WIMLIB_WRITE_FLAG_VERBOSE;
 560                         break;
 561                 case 't':
 562                         num_threads = parse_num_threads(optarg);
 563                         if (num_threads == UINT_MAX)
 564                                 return -1;
 565                         break;
 566                 case 'R':
 567                         write_flags |= WIMLIB_WRITE_FLAG_REBUILD;
 568                         break;
 569                 default:
 570                         usage(cmd);
 571                         return -1;
 572                 }
 573         }
 574         argc -= optind;
 575         argv += optind;
 576         if (argc < 2 || argc > 4) {
 577                 usage(cmd);
 578                 return -1;
 579         }
 580         dir = argv[0];
 581         wimfile = argv[1];
 582
 583         char dir_copy[strlen(dir) + 1];
 584         memcpy(dir_copy, dir, strlen(dir) + 1);
 585         default_name = basename(dir_copy);
 586
 587         name = (argc >= 3) ? argv[2] : default_name;
 588         desc = (argc >= 4) ? argv[3] : NULL;
 589
 590         if (config_file) {
 591                 config_str = file_get_contents(config_file, &config_len);
 592                 if (!config_str)
 593                         return -1;
 594         }
 595
 596         if (cmd == APPEND)
 597                 ret = wimlib_open_wim(wimfile, open_flags, &w);
 598         else
 599                 ret = wimlib_create_new_wim(compression_type, &w);
 600         if (ret != 0)
 601                 goto out;
 602
 603 #ifdef WITH_NTFS_3G
 604         struct stat stbuf;
 605
 606         ret = stat(dir, &stbuf);
 607         if (ret == 0) {
 608                 if (S_ISBLK(stbuf.st_mode) || S_ISREG(stbuf.st_mode)) {
 609                         const char *ntfs_device = dir;
 610                         printf("Capturing WIM image NTFS filesystem on `%s'\n",
 611                                ntfs_device);
 612                         ret = wimlib_add_image_from_ntfs_volume(w, ntfs_device,
 613                                                                 name,
 614                                                                 config_str,
 615                                                                 config_len,
 616                                                                 add_image_flags);
 617                         goto out_write;
 618                 }
 619         } else {
 620                 if (errno != ENOENT) {
 621                         imagex_error_with_errno("Failed to stat `%s'", dir);
 622                         ret = -1;
 623                         goto out;
 624                 }
 625         }
 626 #endif
 627         ret = wimlib_add_image(w, dir, name, config_str, config_len,
 628                                add_image_flags);
 629
 630 out_write:
 631         if (ret != 0)
 632                 goto out;
 633         cur_image = wimlib_get_num_images(w);
 634         if (desc) {
 635                 ret = wimlib_set_image_descripton(w, cur_image, desc);
 636                 if (ret != 0)
 637                         goto out;
 638         }
 639         if (flags_element) {
 640                 ret = wimlib_set_image_flags(w, cur_image, flags_element);
 641                 if (ret != 0)
 642                         goto out;
 643         }
 644         if (cmd == APPEND) {
 645                 ret = wimlib_overwrite(w, write_flags, num_threads);
 646         } else {
 647                 ret = wimlib_write(w, wimfile, WIM_ALL_IMAGES, write_flags,
 648                                    num_threads);
 649         }
 650         if (ret == WIMLIB_ERR_REOPEN)
 651                 ret = 0;
 652         if (ret != 0)
 653                 imagex_error("Failed to write the WIM file `%s'", wimfile);
 654 out:
 655         wimlib_free(w);
 656         free(config_str);
 657         return ret;
 658 }
 659
 660 /* Remove image(s) from a WIM. */
 661 static int imagex_delete(int argc, const char **argv)
 662 {
 663         int c;
 664         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 665         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 666         const char *wimfile;
 667         const char *image_num_or_name;
 668         WIMStruct *w;
 669         int image;
 670         int ret;
 671
 672         for_opt(c, delete_options) {
 673                 switch (c) {
 674                 case 'c':
 675                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 676                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 677                         break;
 678                 default:
 679                         usage(DELETE);
 680                         return -1;
 681                 }
 682         }
 683         argc -= optind;
 684         argv += optind;
 685
 686         if (argc != 2) {
 687                 if (argc < 1)
 688                         imagex_error("Must specify a WIM file");
 689                 if (argc < 2)
 690                         imagex_error("Must specify an image");
 691                 usage(DELETE);
 692                 return -1;
 693         }
 694         wimfile = argv[0];
 695         image_num_or_name = argv[1];
 696
 697         ret = file_writable(wimfile);
 698         if (ret != 0)
 699                 return ret;
 700
 701         ret = wimlib_open_wim(wimfile, open_flags, &w);
 702         if (ret != 0)
 703                 return ret;
 704
 705         image = wimlib_resolve_image(w, image_num_or_name);
 706
 707         ret = verify_image_exists(image, image_num_or_name, wimfile);
 708         if (ret != 0)
 709                 goto out;
 710
 711         ret = wimlib_delete_image(w, image);
 712         if (ret != 0) {
 713                 imagex_error("Failed to delete image from `%s'", wimfile);
 714                 goto out;
 715         }
 716
 717         ret = wimlib_overwrite(w, write_flags, 0);
 718         if (ret == WIMLIB_ERR_REOPEN)
 719                 ret = 0;
 720         if (ret != 0) {
 721                 imagex_error("Failed to write the file `%s' with image "
 722                              "deleted", wimfile);
 723         }
 724 out:
 725         wimlib_free(w);
 726         return ret;
 727 }
 728
 729 /* Print the files contained in an image(s) in a WIM file. */
 730 static int imagex_dir(int argc, const char **argv)
 731 {
 732         const char *wimfile;
 733         WIMStruct *w;
 734         int image;
 735         int ret;
 736         int num_images;
 737
 738         if (argc < 2) {
 739                 imagex_error("Must specify a WIM file");
 740                 usage(DIR);
 741                 return -1;
 742         }
 743         if (argc > 3) {
 744                 imagex_error("Too many arguments");
 745                 usage(DIR);
 746                 return -1;
 747         }
 748
 749         wimfile = argv[1];
 750         ret = wimlib_open_wim(wimfile, WIMLIB_OPEN_FLAG_SPLIT_OK, &w);
 751         if (ret != 0)
 752                 return ret;
 753
 754         if (argc == 3) {
 755                 image = wimlib_resolve_image(w, argv[2]);
 756                 ret = verify_image_exists(image, argv[2], wimfile);
 757                 if (ret != 0)
 758                         goto out;
 759         } else {
 760                 /* Image was not specified.  If the WIM only contains one image,
 761                  * choose that one; otherwise, print an error. */
 762                 num_images = wimlib_get_num_images(w);
 763                 if (num_images != 1) {
 764                         imagex_error("The file `%s' contains %d images; Please "
 765                                      "select one.", wimfile, num_images);
 766                         usage(DIR);
 767                         ret = -1;
 768                         goto out;
 769                 }
 770                 image = 1;
 771         }
 772
 773         ret = wimlib_print_files(w, image);
 774 out:
 775         wimlib_free(w);
 776         return ret;
 777 }
 778
 779 /* Exports one, or all, images from a WIM file to a new WIM file or an existing
 780  * WIM file. */
 781 static int imagex_export(int argc, const char **argv)
 782 {
 783         int c;
 784         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
 785         int export_flags = 0;
 786         int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
 787         int compression_type;
 788         bool compression_type_specified = false;
 789         const char *src_wimfile;
 790         const char *src_image_num_or_name;
 791         const char *dest_wimfile;
 792         const char *dest_name;
 793         const char *dest_desc;
 794         WIMStruct *src_w = NULL;
 795         WIMStruct *dest_w = NULL;
 796         int ret;
 797         int image;
 798         struct stat stbuf;
 799         bool wim_is_new;
 800         const char *swm_glob = NULL;
 801         WIMStruct **additional_swms = NULL;
 802         unsigned num_additional_swms = 0;
 803         unsigned num_threads = 0;
 804
 805         for_opt(c, export_options) {
 806                 switch (c) {
 807                 case 'b':
 808                         export_flags |= WIMLIB_EXPORT_FLAG_BOOT;
 809                         break;
 810                 case 'c':
 811                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
 812                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
 813                         break;
 814                 case 'x':
 815                         compression_type = get_compression_type(optarg);
 816                         if (compression_type == WIM_COMPRESSION_TYPE_INVALID)
 817                                 return -1;
 818                         compression_type_specified = true;
 819                         break;
 820                 case 'r':
 821                         swm_glob = optarg;
 822                         break;
 823                 case 't':
 824                         num_threads = parse_num_threads(optarg);
 825                         if (num_threads == UINT_MAX)
 826                                 return -1;
 827                         break;
 828                 case 'R':
 829                         write_flags |= WIMLIB_WRITE_FLAG_REBUILD;
 830                         break;
 831                 default:
 832                         usage(EXPORT);
 833                         return -1;
 834                 }
 835         }
 836         argc -= optind;
 837         argv += optind;
 838         if (argc < 3 || argc > 5) {
 839                 usage(EXPORT);
 840                 return -1;
 841         }
 842         src_wimfile           = argv[0];
 843         src_image_num_or_name = argv[1];
 844         dest_wimfile          = argv[2];
 845         dest_name             = (argc >= 4) ? argv[3] : NULL;
 846         dest_desc             = (argc >= 5) ? argv[4] : NULL;
 847         ret = wimlib_open_wim(src_wimfile,
 848                               open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK, &src_w);
 849         if (ret != 0)
 850                 return ret;
 851
 852         /* Determine if the destination is an existing file or not.
 853          * If so, we try to append the exported image(s) to it; otherwise, we
 854          * create a new WIM containing the exported image(s). */
 855         if (stat(dest_wimfile, &stbuf) == 0) {
 856                 int dest_ctype;
 857
 858                 wim_is_new = false;
 859                 /* Destination file exists. */
 860                 if (!S_ISREG(stbuf.st_mode) && !S_ISLNK(stbuf.st_mode)) {
 861                         imagex_error("`%s' is not a regular file",
 862                                         dest_wimfile);
 863                         ret = -1;
 864                         goto out;
 865                 }
 866                 ret = wimlib_open_wim(dest_wimfile, open_flags, &dest_w);
 867                 if (ret != 0)
 868                         goto out;
 869
 870                 ret = file_writable(dest_wimfile);
 871                 if (ret != 0)
 872                         return ret;
 873
 874                 dest_ctype = wimlib_get_compression_type(dest_w);
 875                 if (compression_type_specified
 876                     && compression_type != dest_ctype)
 877                 {
 878                         imagex_error("Cannot specify a compression type that is "
 879                                      "not the same as that used in the "
 880                                      "destination WIM");
 881                         ret = -1;
 882                         goto out;
 883                 }
 884                 compression_type = dest_ctype;
 885         } else {
 886                 wim_is_new = true;
 887                 /* dest_wimfile is not an existing file, so create a new WIM. */
 888                 if (!compression_type_specified)
 889                         compression_type = wimlib_get_compression_type(src_w);
 890                 if (errno == ENOENT) {
 891                         ret = wimlib_create_new_wim(compression_type, &dest_w);
 892                         if (ret != 0)
 893                                 goto out;
 894                 } else {
 895                         imagex_error_with_errno("Cannot stat file `%s'",
 896                                                 dest_wimfile);
 897                         ret = -1;
 898                         goto out;
 899                 }
 900         }
 901
 902         image = wimlib_resolve_image(src_w, src_image_num_or_name);
 903         ret = verify_image_exists(image, src_image_num_or_name, src_wimfile);
 904         if (ret != 0)
 905                 goto out;
 906
 907         if (swm_glob) {
 908                 ret = open_swms_from_glob(swm_glob, src_wimfile, open_flags,
 909                                           &additional_swms,
 910                                           &num_additional_swms);
 911                 if (ret != 0)
 912                         goto out;
 913         }
 914
 915         ret = wimlib_export_image(src_w, image, dest_w, dest_name, dest_desc,
 916                                   export_flags, additional_swms,
 917                                   num_additional_swms);
 918         if (ret != 0)
 919                 goto out;
 920
 921
 922         if (wim_is_new)
 923                 ret = wimlib_write(dest_w, dest_wimfile, WIM_ALL_IMAGES,
 924                                    write_flags, num_threads);
 925         else
 926                 ret = wimlib_overwrite(dest_w, write_flags, num_threads);
 927 out:
 928         if (ret == WIMLIB_ERR_REOPEN)
 929                 ret = 0;
 930         wimlib_free(src_w);
 931         wimlib_free(dest_w);
 932         if (additional_swms) {
 933                 for (unsigned i = 0; i < num_additional_swms; i++)
 934                         wimlib_free(additional_swms[i]);
 935                 free(additional_swms);
 936         }
 937         return ret;
 938 }
 939
 940 /* Prints information about a WIM file; also can mark an image as bootable,
 941  * change the name of an image, or change the description of an image. */
 942 static int imagex_info(int argc, const char **argv)
 943 {
 944         int c;
 945         bool boot         = false;
 946         bool check        = false;
 947         bool header       = false;
 948         bool lookup_table = false;
 949         bool xml          = false;
 950         bool metadata     = false;
 951         bool short_header = true;
 952         const char *xml_out_file = NULL;
 953         const char *wimfile;
 954         const char *image_num_or_name = "all";
 955         const char *new_name = NULL;
 956         const char *new_desc = NULL;
 957         WIMStruct *w;
 958         FILE *fp;
 959         int image;
 960         int ret;
 961         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
 962                          WIMLIB_OPEN_FLAG_SPLIT_OK;
 963         int part_number;
 964         int total_parts;
 965
 966         for_opt(c, info_options) {
 967                 switch (c) {
 968                 case 'b':
 969                         boot = true;
 970                         break;
 971                 case 'c':
 972                         check = true;
 973                         break;
 974                 case 'h':
 975                         header = true;
 976                         short_header = false;
 977                         break;
 978                 case 'l':
 979                         lookup_table = true;
 980                         short_header = false;
 981                         break;
 982                 case 'x':
 983                         xml = true;
 984                         short_header = false;
 985                         break;
 986                 case 'X':
 987                         xml_out_file = optarg;
 988                         short_header = false;
 989                         break;
 990                 case 'm':
 991                         metadata = true;
 992                         short_header = false;
 993                         break;
 994                 default:
 995                         usage(INFO);
 996                         return -1;
 997                 }
 998         }
 999
1000         argc -= optind;
1001         argv += optind;
1002         if (argc == 0 || argc > 4) {
1003                 usage(INFO);
1004                 return -1;
1005         }
1006         wimfile = argv[0];
1007         if (argc > 1) {
1008                 image_num_or_name = argv[1];
1009                 if (argc > 2) {
1010                         new_name = argv[2];
1011                         if (argc > 3) {
1012                                 new_desc = argv[3];
1013                         }
1014                 }
1015         }
1016
1017         if (check)
1018                 open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1019
1020         ret = wimlib_open_wim(wimfile, open_flags, &w);
1021         if (ret != 0)
1022                 return ret;
1023
1024         part_number = wimlib_get_part_number(w, &total_parts);
1025
1026         image = wimlib_resolve_image(w, image_num_or_name);
1027         if (image == WIM_NO_IMAGE && strcmp(image_num_or_name, "0") != 0) {
1028                 imagex_error("The image `%s' does not exist",
1029                                                 image_num_or_name);
1030                 if (boot)
1031                         imagex_error("If you would like to set the boot "
1032                                      "index to 0, specify image \"0\" with "
1033                                      "the --boot flag.");
1034                 ret = WIMLIB_ERR_INVALID_IMAGE;
1035                 goto out;
1036         }
1037
1038         if (image == WIM_ALL_IMAGES && wimlib_get_num_images(w) > 1) {
1039                 if (boot) {
1040                         imagex_error("Cannot specify the --boot flag "
1041                                      "without specifying a specific "
1042                                      "image in a multi-image WIM");
1043                         ret = WIMLIB_ERR_INVALID_IMAGE;
1044                         goto out;
1045                 }
1046                 if (new_name) {
1047                         imagex_error("Cannot specify the NEW_NAME "
1048                                      "without specifying a specific "
1049                                      "image in a multi-image WIM");
1050                         ret = WIMLIB_ERR_INVALID_IMAGE;
1051                         goto out;
1052                 }
1053         }
1054
1055         /* Operations that print information are separated from operations that
1056          * recreate the WIM file. */
1057         if (!new_name && !boot) {
1058
1059                 /* Read-only operations */
1060
1061                 if (image == WIM_NO_IMAGE) {
1062                         imagex_error("`%s' is not a valid image",
1063                                      image_num_or_name);
1064                         ret = WIMLIB_ERR_INVALID_IMAGE;
1065                         goto out;
1066                 }
1067
1068                 if (image == WIM_ALL_IMAGES && short_header)
1069                         wimlib_print_wim_information(w);
1070
1071                 if (header)
1072                         wimlib_print_header(w);
1073
1074                 if (lookup_table) {
1075                         if (total_parts != 1) {
1076                                 printf("Warning: Only showing the lookup table "
1077                                        "for part %d of a %d-part WIM.\n",
1078                                        part_number, total_parts);
1079                         }
1080                         wimlib_print_lookup_table(w);
1081                 }
1082
1083                 if (xml) {
1084                         ret = wimlib_extract_xml_data(w, stdout);
1085                         if (ret != 0)
1086                                 goto out;
1087                 }
1088
1089                 if (xml_out_file) {
1090                         fp = fopen(xml_out_file, "wb");
1091                         if (!fp) {
1092                                 imagex_error_with_errno("Failed to open the "
1093                                                         "file `%s' for "
1094                                                         "writing ",
1095                                                         xml_out_file);
1096                                 goto out;
1097                         }
1098                         ret = wimlib_extract_xml_data(w, fp);
1099                         if (fclose(fp) != 0) {
1100                                 imagex_error("Failed to close the file `%s'",
1101                                              xml_out_file);
1102                                 goto out;
1103                         }
1104
1105                         if (ret != 0)
1106                                 goto out;
1107                 }
1108
1109                 if (short_header)
1110                         wimlib_print_available_images(w, image);
1111
1112                 if (metadata) {
1113                         ret = wimlib_print_metadata(w, image);
1114                         if (ret != 0)
1115                                 goto out;
1116                 }
1117         } else {
1118
1119                 /* Modification operations */
1120                 if (total_parts != 1) {
1121                         imagex_error("Modifying a split WIM is not supported.");
1122                         return -1;
1123                 }
1124                 if (image == WIM_ALL_IMAGES)
1125                         image = 1;
1126
1127                 if (image == WIM_NO_IMAGE && new_name) {
1128                         imagex_error("Cannot specify new_name (`%s') when "
1129                                      "using image 0", new_name);
1130                         return -1;
1131                 }
1132
1133                 if (boot) {
1134                         if (image == wimlib_get_boot_idx(w)) {
1135                                 printf("Image %d is already marked as "
1136                                        "bootable.\n", image);
1137                                 boot = false;
1138                         } else {
1139                                 printf("Marking image %d as bootable.\n",
1140                                        image);
1141                                 wimlib_set_boot_idx(w, image);
1142                         }
1143                 }
1144                 if (new_name) {
1145                         if (strcmp(wimlib_get_image_name(w, image),
1146                                                 new_name) == 0) {
1147                                 printf("Image %d is already named \"%s\".\n",
1148                                        image, new_name);
1149                                 new_name = NULL;
1150                         } else {
1151                                 printf("Changing the name of image %d to "
1152                                        "\"%s\".\n", image, new_name);
1153                                 ret = wimlib_set_image_name(w, image, new_name);
1154                                 if (ret != 0)
1155                                         goto out;
1156                         }
1157                 }
1158                 if (new_desc) {
1159                         const char *old_desc;
1160                         old_desc = wimlib_get_image_description(w, image);
1161                         if (old_desc && strcmp(old_desc, new_desc) == 0) {
1162                                 printf("The description of image %d is already "
1163                                        "\"%s\".\n", image, new_desc);
1164                                 new_desc = NULL;
1165                         } else {
1166                                 printf("Changing the description of image %d "
1167                                        "to \"%s\".\n", image, new_desc);
1168                                 ret = wimlib_set_image_descripton(w, image,
1169                                                                   new_desc);
1170                                 if (ret != 0)
1171                                         goto out;
1172                         }
1173                 }
1174
1175                 /* Only call wimlib_overwrite() if something actually needs to
1176                  * be changed. */
1177                 if (boot || new_name || new_desc ||
1178                                 check != wimlib_has_integrity_table(w)) {
1179
1180                         ret = file_writable(wimfile);
1181                         if (ret != 0)
1182                                 return ret;
1183
1184                         int write_flags;
1185                         if (check) {
1186                                 write_flags = WIMLIB_WRITE_FLAG_CHECK_INTEGRITY |
1187                                               WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
1188                         } else {
1189                                 write_flags = 0;
1190                         }
1191
1192                         ret = wimlib_overwrite(w, write_flags, 1);
1193                         if (ret == WIMLIB_ERR_REOPEN)
1194                                 ret = 0;
1195                 } else {
1196                         printf("The file `%s' was not modified because nothing "
1197                                         "needed to be done.\n", wimfile);
1198                         ret = 0;
1199                 }
1200         }
1201 out:
1202         wimlib_free(w);
1203         return ret;
1204 }
1205
1206 /* Join split WIMs into one part WIM */
1207 static int imagex_join(int argc, const char **argv)
1208 {
1209         int c;
1210         int flags = WIMLIB_OPEN_FLAG_SPLIT_OK | WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
1211         const char *output_path;
1212
1213         for_opt(c, join_options) {
1214                 switch (c) {
1215                 case 'c':
1216                         flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1217                         break;
1218                 default:
1219                         goto err;
1220                 }
1221         }
1222         argc -= optind;
1223         argv += optind;
1224
1225         if (argc < 2) {
1226                 imagex_error("Must specify at least one split WIM (.swm) parts "
1227                              "to join");
1228                 goto err;
1229         }
1230         output_path = argv[0];
1231         return wimlib_join(++argv, --argc, output_path, flags);
1232 err:
1233         usage(JOIN);
1234         return -1;
1235 }
1236
1237 /* Mounts an image using a FUSE mount. */
1238 static int imagex_mount_rw_or_ro(int argc, const char **argv)
1239 {
1240         int c;
1241         int mount_flags = 0;
1242         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
1243                          WIMLIB_OPEN_FLAG_SPLIT_OK;
1244         const char *wimfile;
1245         const char *dir;
1246         WIMStruct *w;
1247         int image;
1248         int num_images;
1249         int ret;
1250         const char *swm_glob = NULL;
1251         WIMStruct **additional_swms = NULL;
1252         unsigned num_additional_swms = 0;
1253
1254         if (strcmp(argv[0], "mountrw") == 0)
1255                 mount_flags |= WIMLIB_MOUNT_FLAG_READWRITE;
1256
1257         for_opt(c, mount_options) {
1258                 switch (c) {
1259                 case 'c':
1260                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1261                         break;
1262                 case 'd':
1263                         mount_flags |= WIMLIB_MOUNT_FLAG_DEBUG;
1264                         break;
1265                 case 's':
1266                         if (strcasecmp(optarg, "none") == 0)
1267                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_NONE;
1268                         else if (strcasecmp(optarg, "xattr") == 0)
1269                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR;
1270                         else if (strcasecmp(optarg, "windows") == 0)
1271                                 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS;
1272                         else {
1273                                 imagex_error("Unknown stream interface \"%s\"", optarg);
1274                                 goto mount_usage;
1275                         }
1276                         break;
1277                 case 'r':
1278                         swm_glob = optarg;
1279                         break;
1280                 default:
1281                         goto mount_usage;
1282                 }
1283         }
1284         argc -= optind;
1285         argv += optind;
1286         if (argc != 2 && argc != 3)
1287                 goto mount_usage;
1288
1289         wimfile = argv[0];
1290
1291         ret = wimlib_open_wim(wimfile, open_flags, &w);
1292         if (ret != 0)
1293                 return ret;
1294
1295         if (swm_glob) {
1296                 ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
1297                                           &additional_swms,
1298                                           &num_additional_swms);
1299                 if (ret != 0)
1300                         goto out;
1301         }
1302
1303         if (argc == 2) {
1304                 image = 1;
1305                 num_images = wimlib_get_num_images(w);
1306                 if (num_images != 1) {
1307                         imagex_error("The file `%s' contains %d images; Please "
1308                                      "select one.", wimfile, num_images);
1309                         usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
1310                                         ? MOUNTRW : MOUNT);
1311                         ret = -1;
1312                         goto out;
1313                 }
1314                 dir = argv[1];
1315         } else {
1316                 image = wimlib_resolve_image(w, argv[1]);
1317                 dir = argv[2];
1318                 ret = verify_image_exists_and_is_single(image, argv[1], wimfile);
1319                 if (ret != 0)
1320                         goto out;
1321         }
1322
1323         if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) {
1324                 ret = file_writable(wimfile);
1325                 if (ret != 0)
1326                         return ret;
1327         }
1328
1329         ret = wimlib_mount(w, image, dir, mount_flags, additional_swms,
1330                            num_additional_swms);
1331         if (ret != 0) {
1332                 imagex_error("Failed to mount image %d from `%s' on `%s'",
1333                              image, wimfile, dir);
1334
1335         }
1336 out:
1337         wimlib_free(w);
1338         if (additional_swms) {
1339                 for (unsigned i = 0; i < num_additional_swms; i++)
1340                         wimlib_free(additional_swms[i]);
1341                 free(additional_swms);
1342         }
1343         return ret;
1344 mount_usage:
1345         usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
1346                         ? MOUNTRW : MOUNT);
1347         return -1;
1348 }
1349
1350 static int imagex_optimize(int argc, const char **argv)
1351 {
1352         int c;
1353         int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
1354         int write_flags = WIMLIB_WRITE_FLAG_REBUILD |
1355                           WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
1356         int ret;
1357         WIMStruct *w;
1358         const char *wimfile;
1359         off_t old_size;
1360         off_t new_size;
1361
1362         for_opt(c, optimize_options) {
1363                 switch (c) {
1364                 case 'c':
1365                         open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1366                         write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
1367                         break;
1368                 case 'r':
1369                         write_flags |= WIMLIB_WRITE_FLAG_RECOMPRESS;
1370                         break;
1371                 default:
1372                         usage(OPTIMIZE);
1373                         return -1;
1374                 }
1375         }
1376         argc -= optind;
1377         argv += optind;
1378
1379         if (argc != 1) {
1380                 usage(OPTIMIZE);
1381                 return -1;
1382         }
1383
1384         wimfile = argv[0];
1385
1386         ret = wimlib_open_wim(wimfile, open_flags, &w);
1387         if (ret != 0)
1388                 return ret;
1389
1390         old_size = file_get_size(argv[0]);
1391         printf("`%s' original size: ", wimfile);
1392         if (old_size == -1)
1393                 puts("Unknown");
1394         else
1395                 printf("%"PRIu64" KiB\n", old_size >> 10);
1396
1397         ret = wimlib_overwrite(w, write_flags, 0);
1398
1399         new_size = file_get_size(argv[0]);
1400         printf("`%s' optimized size: ", wimfile);
1401         if (new_size == -1)
1402                 puts("Unknown");
1403         else
1404                 printf("%"PRIu64" KiB\n", new_size >> 10);
1405
1406         fputs("Space saved: ", stdout);
1407         if (new_size != -1 && old_size != -1) {
1408                 printf("%lld KiB\n",
1409                        ((long long)old_size - (long long)new_size) >> 10);
1410         } else {
1411                 puts("Unknown");
1412         }
1413
1414         wimlib_free(w);
1415         return ret;
1416 }
1417
1418 /* Split a WIM into a spanned set */
1419 static int imagex_split(int argc, const char **argv)
1420 {
1421         int c;
1422         int flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
1423         unsigned long part_size;
1424         char *tmp;
1425
1426         for_opt(c, split_options) {
1427                 switch (c) {
1428                 case 'c':
1429                         flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
1430                         break;
1431                 default:
1432                         usage(SPLIT);
1433                         return -1;
1434                 }
1435         }
1436         argc -= optind;
1437         argv += optind;
1438
1439         if (argc != 3) {
1440                 usage(SPLIT);
1441                 return -1;
1442         }
1443         part_size = strtod(argv[2], &tmp) * (1 << 20);
1444         if (tmp == argv[2] || *tmp) {
1445                 imagex_error("Invalid part size \"%s\"", argv[2]);
1446                 imagex_error("The part size must be an integer or floating-point number of megabytes.");
1447                 return -1;
1448         }
1449         return wimlib_split(argv[0], argv[1], part_size, flags);
1450 }
1451
1452 /* Unmounts an image. */
1453 static int imagex_unmount(int argc, const char **argv)
1454 {
1455         int c;
1456         int unmount_flags = 0;
1457         int ret;
1458
1459         for_opt(c, unmount_options) {
1460                 switch (c) {
1461                 case 'c':
1462                         unmount_flags |= WIMLIB_UNMOUNT_FLAG_COMMIT;
1463                         break;
1464                 case 'C':
1465                         unmount_flags |= WIMLIB_UNMOUNT_FLAG_CHECK_INTEGRITY;
1466                         break;
1467                 default:
1468                         usage(UNMOUNT);
1469                         return -1;
1470                 }
1471         }
1472         argc -= optind;
1473         argv += optind;
1474         if (argc != 1) {
1475                 usage(UNMOUNT);
1476                 return -1;
1477         }
1478
1479         ret = wimlib_unmount(argv[0], unmount_flags);
1480         if (ret != 0)
1481                 imagex_error("Failed to unmount `%s'", argv[0]);
1482         return ret;
1483 }
1484
1485 struct imagex_command {
1486         const char *name;
1487         int (*func)(int , const char **);
1488         int cmd;
1489 };
1490
1491
1492 #define for_imagex_command(p) for (p = &imagex_commands[0]; \
1493                 p != &imagex_commands[ARRAY_LEN(imagex_commands)]; p++)
1494
1495 static const struct imagex_command imagex_commands[] = {
1496         {"append",  imagex_capture_or_append, APPEND},
1497         {"apply",   imagex_apply,             APPLY},
1498         {"capture", imagex_capture_or_append, CAPTURE},
1499         {"delete",  imagex_delete,            DELETE},
1500         {"dir",     imagex_dir,               DIR},
1501         {"export",  imagex_export,            EXPORT},
1502         {"info",    imagex_info,              INFO},
1503         {"join",    imagex_join,              JOIN},
1504         {"mount",   imagex_mount_rw_or_ro,    MOUNT},
1505         {"mountrw", imagex_mount_rw_or_ro,    MOUNTRW},
1506         {"optimize",imagex_optimize,          OPTIMIZE},
1507         {"split",   imagex_split,             SPLIT},
1508         {"unmount", imagex_unmount,           UNMOUNT},
1509 };
1510
1511 static void version()
1512 {
1513         static const char *s =
1514         "imagex (" PACKAGE ") " PACKAGE_VERSION "\n"
1515         "Copyright (C) 2012 Eric Biggers\n"
1516         "License GPLv3+; GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n"
1517         "This is free software: you are free to change and redistribute it.\n"
1518         "There is NO WARRANTY, to the extent permitted by law.\n"
1519         "\n"
1520         "Report bugs to "PACKAGE_BUGREPORT".\n";
1521         fputs(s, stdout);
1522 }
1523
1524
1525 static void help_or_version(int argc, const char **argv)
1526 {
1527         int i;
1528         const char *p;
1529         const struct imagex_command *cmd;
1530
1531         for (i = 1; i < argc; i++) {
1532                 p = argv[i];
1533                 if (*p == '-')
1534                         p++;
1535                 else
1536                         continue;
1537                 if (*p == '-')
1538                         p++;
1539                 if (strcmp(p, "help") == 0) {
1540                         for_imagex_command(cmd) {
1541                                 if (strcmp(cmd->name, argv[1]) == 0) {
1542                                         usage(cmd->cmd);
1543                                         exit(0);
1544                                 }
1545                         }
1546                         usage_all();
1547                         exit(0);
1548                 }
1549                 if (strcmp(p, "version") == 0) {
1550                         version();
1551                         exit(0);
1552                 }
1553         }
1554 }
1555
1556
1557 static void usage(int cmd_type)
1558 {
1559         const struct imagex_command *cmd;
1560         printf("Usage: %s", usage_strings[cmd_type]);
1561         for_imagex_command(cmd) {
1562                 if (cmd->cmd == cmd_type)
1563                         printf("\nTry `man imagex-%s' for more details.\n",
1564                                cmd->name);
1565         }
1566 }
1567
1568 static void usage_all()
1569 {
1570         puts("IMAGEX: Usage:");
1571         for (int i = 0; i < ARRAY_LEN(usage_strings); i++)
1572                 printf("    %s", usage_strings[i]);
1573         static const char *extra =
1574 "    imagex --help\n"
1575 "    imagex --version\n"
1576 "\n"
1577 "    The compression TYPE may be \"maximum\", \"fast\", or \"none\".\n"
1578 "\n"
1579 "    Try `man imagex' for more information.\n"
1580         ;
1581         fputs(extra, stdout);
1582 }
1583
1584
1585 int main(int argc, const char **argv)
1586 {
1587         const struct imagex_command *cmd;
1588         int ret;
1589
1590         if (argc < 2) {
1591                 imagex_error("No command specified");
1592                 usage_all();
1593                 return 1;
1594         }
1595
1596         help_or_version(argc, argv);
1597         argc--;
1598         argv++;
1599
1600         wimlib_set_print_errors(true);
1601
1602         for_imagex_command(cmd) {
1603                 if (strcmp(cmd->name, *argv) == 0) {
1604                         ret = cmd->func(argc, argv);
1605                         if (ret > 0) {
1606                                 imagex_error("Exiting with error code %d:\n"
1607                                              "       %s.", ret,
1608                                              wimlib_get_error_string(ret));
1609                                 if (ret == WIMLIB_ERR_NTFS_3G)
1610                                         imagex_error_with_errno("errno");
1611                         }
1612                         return ret;
1613                 }
1614         }
1615
1616         imagex_error("Unrecognized command: `%s'", argv[0]);
1617         usage_all();
1618         return 1;
1619 }