]> wimlib.net Git - wimlib/blobdiff - programs/imagex.c
Implement multi-threaded compression
[wimlib] / programs / imagex.c
index 134ff29de19604ff56e938fb7712d39ff8e0ebfa..6e78296f12d0e1de59762d2711d5630456b56f6b 100644 (file)
 #include <getopt.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <glob.h>
 #include <string.h>
 #include <errno.h>
+#include <libgen.h>
 #include <sys/stat.h>
-
-#ifdef WITH_NTFS_3G
 #include <unistd.h>
-#include <sys/wait.h>
-#endif
 
 #define ARRAY_LEN(array) (sizeof(array) / sizeof(array[0]))
 
-#define swap(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
-                               a = __b; b = __a; })
-
 #define for_opt(c, opts) while ((c = getopt_long_only(argc, (char**)argv, "", \
                                opts, NULL)) != -1)
 
@@ -60,61 +55,49 @@ enum imagex_op_type {
        UNMOUNT,
 };
 
-static const char *path_basename(const char *path)
-{
-       const char *p = path;
-       while (*p)
-               p++;
-       p--;
-
-       /* Trailing slashes. */
-       while ((p != path - 1) && *p == '/')
-               p--;
-
-       while ((p != path - 1) && *p != '/')
-               p--;
-
-       return p + 1;
-}
-
+static void usage(int cmd_type);
+static void usage_all();
 
 static const char *usage_strings[] = {
-[APPEND] = 
-"    imagex append (DIRECTORY | NTFS_VOLUME) WIMFILE [\"IMAGE_NAME\"]\n"
-"                  [\"DESCRIPTION\"] [--boot] [--check] [--flags EDITIONID]\n"
-"                  [--dereference]\n",
-[APPLY] = 
-"    imagex apply WIMFILE [IMAGE_NUM | IMAGE_NAME | all]\n"
-"                 (DIRECTORY | NTFS_VOLUME) [--check] [--hardlink]\n"
-"                 [--symlink] [--verbose]\n",
-[CAPTURE] = 
-"    imagex capture (DIRECTORY | NTFS_VOLUME) WIMFILE [\"IMAGE_NAME\"]\n"
-"                   [\"DESCRIPTION\"] [--boot] [--check] [--compress[=TYPE]]\n"
-"                   [--flags \"EditionID\"] [--verbose] [--dereference]\n",
-[DELETE] = 
-"    imagex delete WIMFILE (IMAGE_NUM | IMAGE_NAME | all) [--check]\n",
-[DIR] = 
-"    imagex dir WIMFILE (IMAGE_NUM | IMAGE_NAME | \"all\")\n",
-[EXPORT] = 
-"    imagex export SRC_WIMFILE (SRC_IMAGE_NUM | SRC_IMAGE_NAME | all ) \n"
-"        DEST_WIMFILE [\"DEST_IMAGE_NAME\"] [\"DEST_IMAGE_DESCRIPTION\"]\n"
-"                  [--boot] [--check] [--compress[=TYPE]]\n",
-[INFO] = 
-"    imagex info WIMFILE [IMAGE_NUM | IMAGE_NAME] [NEW_NAME]\n"
-"                [NEW_DESC] [--boot] [--check] [--header] [--lookup-table]\n"
-"                [--xml] [--extract-xml FILE] [--metadata]\n",
-[JOIN] = 
-"    imagex join [--check] WIMFILE SPLIT_WIM...\n",
-[MOUNT] = 
-"    imagex mount WIMFILE (IMAGE_NUM | IMAGE_NAME) DIRECTORY\n"
-"                 [--check] [--debug] [--stream-interface=INTERFACE]\n",
-[MOUNTRW] = 
-"    imagex mountrw WIMFILE [IMAGE_NUM | IMAGE_NAME] DIRECTORY\n"
-"                   [--check] [--debug] [--stream-interface=INTERFACE]\n",
-[SPLIT] = 
-"    imagex split WIMFILE SPLIT_WIMFILE PART_SIZE [--check]\n",
-[UNMOUNT] = 
-"    imagex unmount DIRECTORY [--commit] [--check]\n",
+[APPEND] =
+"imagex append (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
+"                     [DESCRIPTION] [--boot] [--check] [--flags EDITION_ID]\n"
+"                     [--verbose] [--dereference] [--config=FILE]\n",
+[APPLY] =
+"imagex apply WIMFILE [IMAGE_NUM | IMAGE_NAME | all]\n"
+"                    (DIRECTORY | NTFS_VOLUME) [--check] [--hardlink]\n"
+"                    [--symlink] [--verbose] [--ref=\"GLOB\"]\n",
+[CAPTURE] =
+"imagex capture (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
+"                      [DESCRIPTION] [--boot] [--check] [--compress=TYPE]\n"
+"                      [--flags EDITION_ID] [--verbose] [--dereference]\n"
+"                   [--config=FILE]\n",
+[DELETE] =
+"imagex delete WIMFILE (IMAGE_NUM | IMAGE_NAME | all) [--check]\n",
+[DIR] =
+"imagex dir WIMFILE (IMAGE_NUM | IMAGE_NAME | all)\n",
+[EXPORT] =
+"imagex export SRC_WIMFILE (SRC_IMAGE_NUM | SRC_IMAGE_NAME | all ) \n"
+"                     DEST_WIMFILE [DEST_IMAGE_NAME]\n"
+"                     [DEST_IMAGE_DESCRIPTION] [--boot] [--check]\n"
+"                     [--compress=TYPE] [--ref=\"GLOB\"]\n",
+[INFO] =
+"imagex info WIMFILE [IMAGE_NUM | IMAGE_NAME] [NEW_NAME]\n"
+"                   [NEW_DESC] [--boot] [--check] [--header] [--lookup-table]\n"
+"                   [--xml] [--extract-xml FILE] [--metadata]\n",
+[JOIN] =
+"imagex join [--check] WIMFILE SPLIT_WIM...\n",
+[MOUNT] =
+"imagex mount WIMFILE (IMAGE_NUM | IMAGE_NAME) DIRECTORY\n"
+"                    [--check] [--debug] [--streams-interface=INTERFACE]\n"
+"                    [--ref=\"GLOB\"]\n",
+[MOUNTRW] =
+"imagex mountrw WIMFILE [IMAGE_NUM | IMAGE_NAME] DIRECTORY\n"
+"                      [--check] [--debug] [--streams-interface=INTERFACE]\n",
+[SPLIT] =
+"imagex split WIMFILE SPLIT_WIMFILE PART_SIZE_MB [--check]\n",
+[UNMOUNT] =
+"imagex unmount DIRECTORY [--commit] [--check]\n",
 };
 
 static const struct option common_options[] = {
@@ -123,27 +106,22 @@ static const struct option common_options[] = {
        {NULL, 0, NULL, 0},
 };
 
-static const struct option append_options[] = {
-       {"boot",   no_argument,       NULL, 'b'},
-       {"check",  no_argument,       NULL, 'c'},
-       {"flags",    required_argument, NULL, 'f'},
-       {"dereference", no_argument, NULL, 'L'},
-       {NULL, 0, NULL, 0},
-};
 static const struct option apply_options[] = {
        {"check",    no_argument,       NULL, 'c'},
        {"hardlink", no_argument,       NULL, 'h'},
        {"symlink",  no_argument,       NULL, 's'},
        {"verbose",  no_argument,       NULL, 'v'},
+       {"ref",      required_argument, NULL, 'r'},
        {NULL, 0, NULL, 0},
 };
-static const struct option capture_options[] = {
-       {"boot",     no_argument,       NULL, 'b'},
-       {"check",    no_argument,       NULL, 'c'},
-       {"compress", optional_argument, NULL, 'x'},
-       {"flags",    required_argument, NULL, 'f'},
-       {"verbose",  no_argument,       NULL,'v'},
-       {"dereference", no_argument, NULL, 'L'},
+static const struct option capture_or_append_options[] = {
+       {"boot",        no_argument,       NULL, 'b'},
+       {"check",       no_argument,       NULL, 'c'},
+       {"compress",    required_argument, NULL, 'x'},
+       {"config",      required_argument, NULL, 'C'},
+       {"dereference", no_argument,       NULL, 'L'},
+       {"flags",       required_argument, NULL, 'f'},
+       {"verbose",     no_argument,       NULL, 'v'},
        {NULL, 0, NULL, 0},
 };
 static const struct option delete_options[] = {
@@ -152,20 +130,21 @@ static const struct option delete_options[] = {
 };
 
 static const struct option export_options[] = {
-       {"boot",       no_argument, NULL, 'b'},
-       {"check",      no_argument , NULL, 'c'},
-       {"compress",   optional_argument, NULL, 'x'},
+       {"boot",       no_argument,       NULL, 'b'},
+       {"check",      no_argument,       NULL, 'c'},
+       {"compress",   required_argument, NULL, 'x'},
+       {"ref",        required_argument, NULL, 'r'},
        {NULL, 0, NULL, 0},
 };
 
 static const struct option info_options[] = {
        {"boot",         no_argument, NULL, 'b'},
        {"check",        no_argument, NULL, 'c'},
+       {"extract-xml",  required_argument, NULL, 'X'},
        {"header",       no_argument, NULL, 'h'},
        {"lookup-table", no_argument, NULL, 'l'},
-       {"xml",          no_argument, NULL, 'x'},
-       {"extract-xml",  required_argument, NULL, 'X'},
        {"metadata",     no_argument, NULL, 'm'},
+       {"xml",          no_argument, NULL, 'x'},
        {NULL, 0, NULL, 0},
 };
 
@@ -177,7 +156,8 @@ static const struct option join_options[] = {
 static const struct option mount_options[] = {
        {"check", no_argument, NULL, 'c'},
        {"debug", no_argument, NULL, 'd'},
-       {"stream-interface", required_argument, NULL, 's'},
+       {"streams-interface", required_argument, NULL, 's'},
+       {"ref",      required_argument, NULL, 'r'},
        {NULL, 0, NULL, 0},
 };
 
@@ -193,6 +173,7 @@ static const struct option unmount_options[] = {
 };
 
 
+
 /* Print formatted error message to stderr. */
 static void imagex_error(const char *format, ...)
 {
@@ -216,45 +197,17 @@ static void imagex_error_with_errno(const char *format, ...)
        va_end(va);
 }
 
-
-static inline void version()
-{
-       static const char *s = 
-       "imagex (" PACKAGE ") " PACKAGE_VERSION "\n"
-       "Copyright (C) 2012 Eric Biggers\n"
-       "License GPLv3+; GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n"
-       "This is free software: you are free to change and redistribute it.\n"
-       "There is NO WARRANTY, to the extent permitted by law.\n"
-       "\n"
-       "Report bugs to "PACKAGE_BUGREPORT".\n";
-       fputs(s, stdout);
-}
-
-static inline void usage(int cmd)
-{
-       puts("IMAGEX: Usage:");
-       fputs(usage_strings[cmd], stdout);
-}
-
-static void usage_all()
-{
-       puts("IMAGEX: Usage:");
-       for (int i = 0; i < ARRAY_LEN(usage_strings); i++)
-               fputs(usage_strings[i], stdout);
-       static const char *extra = 
-"    imagex --help\n"
-"    imagex --version\n"
-"\n"
-"    The compression TYPE may be \"maximum\", \"fast\", or \"none\".\n"
-       ;
-       fputs(extra, stdout);
-}
-
-static int verify_image_exists(int image)
+static int verify_image_exists(int image, const char *image_name,
+                              const char *wim_name)
 {
        if (image == WIM_NO_IMAGE) {
-               imagex_error("Not a valid image");
-               return WIMLIB_ERR_INVALID_IMAGE;
+               imagex_error("\"%s\" is not a valid image in `%s'!\n"
+                            "       Please specify a 1-based imagex index or "
+                            "image name.\n"
+                            "       You may use `imagex info' to list the images "
+                            "contained in a WIM.",
+                            image_name, wim_name);
+               return -1;
        }
        return 0;
 }
@@ -262,16 +215,17 @@ static int verify_image_exists(int image)
 static int verify_image_is_single(int image)
 {
        if (image == WIM_ALL_IMAGES) {
-               imagex_error("Cannot specify all images for this action");
-               return WIMLIB_ERR_INVALID_IMAGE;
+               imagex_error("Cannot specify all images for this action!");
+               return -1;
        }
        return 0;
 }
 
-static int verify_image_exists_and_is_single(int image)
+static int verify_image_exists_and_is_single(int image, const char *image_name,
+                                            const char *wim_name)
 {
        int ret;
-       ret = verify_image_exists(image);
+       ret = verify_image_exists(image, image_name, wim_name);
        if (ret == 0)
                ret = verify_image_is_single(image);
        return ret;
@@ -279,8 +233,6 @@ static int verify_image_exists_and_is_single(int image)
 
 static int get_compression_type(const char *optarg)
 {
-       if (!optarg)
-               return WIM_COMPRESSION_TYPE_XPRESS;
        if (strcasecmp(optarg, "maximum") == 0 || strcasecmp(optarg, "lzx") == 0)
                return WIM_COMPRESSION_TYPE_LZX;
        else if (strcasecmp(optarg, "fast") == 0 || strcasecmp(optarg, "xpress") == 0)
@@ -294,92 +246,117 @@ static int get_compression_type(const char *optarg)
        }
 }
 
-static int imagex_append(int argc, const char **argv)
+static char *file_get_contents(const char *filename, size_t *len_ret)
 {
-       int c;
-       const char *flags_element = NULL;
-       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
-       int add_image_flags = 0;
-       int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
-       const char *dir;
-       const char *wimfile;
-       const char *name;
-       const char *desc;
-       WIMStruct *w;
-       int ret;
+       struct stat stbuf;
+       char *buf;
+       size_t len;
+       FILE *fp;
 
-       for_opt(c, append_options) {
-               switch (c) {
-               case 'b':
-                       add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_BOOT;
-                       break;
-               case 'c':
-                       open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
-                       write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
-                       break;
-               case 'f':
-                       flags_element = optarg;
-                       break;
-               case 'L':
-                       add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
-                       break;
-               default:
-                       usage(APPEND);
-                       return -1;
-               }
+       if (stat(filename, &stbuf) != 0) {
+               imagex_error_with_errno("Failed to stat the file `%s'", filename);
+               return NULL;
        }
-       argc -= optind;
-       argv += optind;
-       if (argc < 2 || argc > 4) {
-               usage(APPEND);
-               return -1;
+       len = stbuf.st_size;
+
+       fp = fopen(filename, "rb");
+       if (!fp) {
+               imagex_error_with_errno("Failed to open the file `%s'", filename);
+               return NULL;
        }
-       dir     = argv[0];
-       wimfile = argv[1];
-       name    = (argc >= 3) ? argv[2] : path_basename(dir);
-       desc    = (argc >= 4) ? argv[3] : NULL;
 
-       ret = wimlib_open_wim(wimfile, open_flags, &w);
+       buf = malloc(len);
+       if (!buf) {
+               imagex_error("Failed to allocate buffer of %zu bytes to hold "
+                            "contents of file `%s'", len, filename);
+               goto out_fclose;
+       }
+       if (fread(buf, 1, len, fp) != len) {
+               imagex_error_with_errno("Failed to read %lu bytes from the "
+                                       "file `%s'", len, filename);
+               goto out_free_buf;
+       }
+       *len_ret = len;
+       return buf;
+out_free_buf:
+       free(buf);
+out_fclose:
+       fclose(fp);
+       return NULL;
+}
+
+static int file_writable(const char *path)
+{
+       int ret;
+       ret = access(path, F_OK | W_OK);
        if (ret != 0)
-               return ret;
+               imagex_error_with_errno("Can't modify `%s'", path);
+       return ret;
+}
 
-#ifdef WITH_NTFS_3G
-       struct stat stbuf;
+static int open_swms_from_glob(const char *swm_glob,
+                              const char *first_part,
+                              int open_flags,
+                              WIMStruct ***additional_swms_ret,
+                              unsigned *num_additional_swms_ret)
+{
+       unsigned num_additional_swms = 0;
+       WIMStruct **additional_swms = NULL;
+       glob_t globbuf;
+       int ret;
 
-       ret = stat(dir, &stbuf);
-       if (ret == 0) {
-               if (S_ISBLK(stbuf.st_mode) || S_ISREG(stbuf.st_mode)) {
-                       const char *ntfs_device = dir;
-                       printf("Capturing WIM image NTFS filesystem on `%s'\n",
-                              ntfs_device);
-                       ret = wimlib_add_image_from_ntfs_volume(w, ntfs_device,
-                                                               name, desc,
-                                                               flags_element,
-                                                               add_image_flags);
-                       goto out_write;
+       ret = glob(swm_glob, GLOB_ERR | GLOB_NOSORT, NULL, &globbuf);
+       if (ret != 0) {
+               if (ret == GLOB_NOMATCH) {
+                       imagex_error("Found no files for glob \"%s\"",
+                                    swm_glob);
+               } else {
+                       imagex_error_with_errno("Failed to process glob "
+                                               "\"%s\"", swm_glob);
                }
-       } else {
-               if (errno != -ENOENT)
-                       imagex_error_with_errno("Failed to stat `%s'", dir);
-       }
-#endif
-       ret = wimlib_add_image(w, dir, name, desc, 
-                              flags_element, add_image_flags);
-
-out_write:
-       if (ret != 0)
+               ret = -1;
                goto out;
-       ret = wimlib_overwrite(w, write_flags);
+       }
+       num_additional_swms = globbuf.gl_pathc;
+       additional_swms = calloc(num_additional_swms, sizeof(additional_swms[0]));
+       if (!additional_swms) {
+               imagex_error("Out of memory");
+               ret = -1;
+               goto out_globfree;
+       }
+       unsigned offset = 0;
+       for (unsigned i = 0; i < num_additional_swms; i++) {
+               if (strcmp(globbuf.gl_pathv[i], first_part) == 0) {
+                       offset++;
+                       continue;
+               }
+               ret = wimlib_open_wim(globbuf.gl_pathv[i],
+                                     open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK,
+                                     &additional_swms[i - offset]);
+               if (ret != 0)
+                       goto out_close_swms;
+       }
+       *additional_swms_ret = additional_swms;
+       *num_additional_swms_ret = num_additional_swms - offset;
+       ret = 0;
+       goto out_globfree;
+out_close_swms:
+       for (unsigned i = 0; i < num_additional_swms; i++)
+               wimlib_free(additional_swms[i]);
+       free(additional_swms);
+out_globfree:
+       globfree(&globbuf);
 out:
-       wimlib_free(w);
        return ret;
 }
 
+
 /* Extract one image, or all images, from a WIM file into a directory. */
 static int imagex_apply(int argc, const char **argv)
 {
        int c;
-       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
+       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
+                        WIMLIB_OPEN_FLAG_SPLIT_OK;
        int image;
        int num_images;
        WIMStruct *w;
@@ -389,6 +366,10 @@ static int imagex_apply(int argc, const char **argv)
        const char *image_num_or_name;
        int extract_flags = 0;
 
+       const char *swm_glob = NULL;
+       WIMStruct **additional_swms = NULL;
+       unsigned num_additional_swms = 0;
+
        for_opt(c, apply_options) {
                switch (c) {
                case 'c':
@@ -403,6 +384,9 @@ static int imagex_apply(int argc, const char **argv)
                case 'v':
                        extract_flags |= WIMLIB_EXTRACT_FLAG_VERBOSE;
                        break;
+               case 'r':
+                       swm_glob = optarg;
+                       break;
                default:
                        usage(APPLY);
                        return -1;
@@ -417,7 +401,7 @@ static int imagex_apply(int argc, const char **argv)
 
        wimfile = argv[0];
        if (argc == 2) {
-               image_num_or_name =  "1";
+               image_num_or_name = "1";
                dir = argv[1];
        } else {
                image_num_or_name = argv[1];
@@ -426,10 +410,10 @@ static int imagex_apply(int argc, const char **argv)
 
        ret = wimlib_open_wim(wimfile, open_flags, &w);
        if (ret != 0)
-               goto out;
+               return ret;
 
        image = wimlib_resolve_image(w, image_num_or_name);
-       ret = verify_image_exists(image);
+       ret = verify_image_exists(image, image_num_or_name, wimfile);
        if (ret != 0)
                goto out;
 
@@ -442,6 +426,14 @@ static int imagex_apply(int argc, const char **argv)
                goto out;
        }
 
+       if (swm_glob) {
+               ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
+                                         &additional_swms,
+                                         &num_additional_swms);
+               if (ret != 0)
+                       goto out;
+       }
+
 #ifdef WITH_NTFS_3G
        struct stat stbuf;
 
@@ -453,45 +445,65 @@ static int imagex_apply(int argc, const char **argv)
                               image, wimfile, ntfs_device);
                        ret = wimlib_apply_image_to_ntfs_volume(w, image,
                                                                ntfs_device,
-                                                               extract_flags);
+                                                               extract_flags,
+                                                               additional_swms,
+                                                               num_additional_swms);
                        goto out;
                }
        } else {
-               if (errno != -ENOENT)
+               if (errno != ENOENT) {
                        imagex_error_with_errno("Failed to stat `%s'", dir);
+                       ret = -1;
+                       goto out;
+               }
        }
 #endif
 
-       ret = wimlib_extract_image(w, image, dir, extract_flags);
+       ret = wimlib_extract_image(w, image, dir, extract_flags,
+                                  additional_swms, num_additional_swms);
 out:
        wimlib_free(w);
+       if (additional_swms) {
+               for (unsigned i = 0; i < num_additional_swms; i++)
+                       wimlib_free(additional_swms[i]);
+               free(additional_swms);
+       }
        return ret;
 }
 
-
-/* Create a WIM file from a directory. */
-static int imagex_capture(int argc, const char **argv)
+static int imagex_capture_or_append(int argc, const char **argv)
 {
        int c;
+       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
        int add_image_flags = 0;
        int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
        int compression_type = WIM_COMPRESSION_TYPE_XPRESS;
-       const char *flags_element = NULL;
        const char *dir;
        const char *wimfile;
        const char *name;
        const char *desc;
-       WIMStruct *w;
+       const char *flags_element = NULL;
+       const char *config_file = NULL;
+       char *config_str = NULL;
+       size_t config_len = 0;
+       WIMStruct *w = NULL;
        int ret;
+       int cur_image;
+       char *default_name;
+       int cmd = strcmp(argv[0], "append") ? CAPTURE : APPEND;
 
-       for_opt(c, capture_options) {
+       for_opt(c, capture_or_append_options) {
                switch (c) {
                case 'b':
                        add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_BOOT;
                        break;
                case 'c':
+                       open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
                        write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
                        break;
+               case 'C':
+                       config_file = optarg;
+                       break;
                case 'x':
                        compression_type = get_compression_type(optarg);
                        if (compression_type == WIM_COMPRESSION_TYPE_INVALID)
@@ -500,33 +512,46 @@ static int imagex_capture(int argc, const char **argv)
                case 'f':
                        flags_element = optarg;
                        break;
+               case 'L':
+                       add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
+                       break;
                case 'v':
                        add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_VERBOSE;
                        write_flags |= WIMLIB_WRITE_FLAG_VERBOSE;
                        break;
-               case 'L':
-                       add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
-                       break;
                default:
-                       usage(CAPTURE);
+                       usage(cmd);
                        return -1;
                }
        }
-
        argc -= optind;
        argv += optind;
        if (argc < 2 || argc > 4) {
-               usage(CAPTURE);
+               usage(cmd);
                return -1;
        }
-       dir     = argv[0];
+       dir = argv[0];
        wimfile = argv[1];
-       name    = (argc >= 3) ? argv[2] : dir;
-       desc    = (argc >= 4) ? argv[3] : NULL;
 
-       ret = wimlib_create_new_wim(compression_type, &w);
+       char dir_copy[strlen(dir) + 1];
+       memcpy(dir_copy, dir, strlen(dir) + 1);
+       default_name = basename(dir_copy);
+
+       name = (argc >= 3) ? argv[2] : default_name;
+       desc = (argc >= 4) ? argv[3] : NULL;
+
+       if (config_file) {
+               config_str = file_get_contents(config_file, &config_len);
+               if (!config_str)
+                       return -1;
+       }
+
+       if (cmd == APPEND)
+               ret = wimlib_open_wim(wimfile, open_flags, &w);
+       else
+               ret = wimlib_create_new_wim(compression_type, &w);
        if (ret != 0)
-               return ret;
+               goto out;
 
 #ifdef WITH_NTFS_3G
        struct stat stbuf;
@@ -538,30 +563,46 @@ static int imagex_capture(int argc, const char **argv)
                        printf("Capturing WIM image NTFS filesystem on `%s'\n",
                               ntfs_device);
                        ret = wimlib_add_image_from_ntfs_volume(w, ntfs_device,
-                                                               name, desc,
-                                                               flags_element,
+                                                               name,
+                                                               config_str,
+                                                               config_len,
                                                                add_image_flags);
                        goto out_write;
                }
        } else {
-               if (errno != -ENOENT)
+               if (errno != ENOENT) {
                        imagex_error_with_errno("Failed to stat `%s'", dir);
+                       ret = -1;
+                       goto out;
+               }
        }
 #endif
-       ret = wimlib_add_image(w, dir, name, desc, flags_element, 
+       ret = wimlib_add_image(w, dir, name, config_str, config_len,
                               add_image_flags);
 
 out_write:
-       if (ret != 0) {
-               imagex_error("Failed to add the image `%s'", dir);
+       if (ret != 0)
                goto out;
+       cur_image = wimlib_get_num_images(w);
+       if (desc) {
+               ret = wimlib_set_image_descripton(w, cur_image, desc);
+               if (ret != 0)
+                       goto out;
        }
-
-       ret = wimlib_write(w, wimfile, WIM_ALL_IMAGES, write_flags);
+       if (flags_element) {
+               ret = wimlib_set_image_flags(w, cur_image, flags_element);
+               if (ret != 0)
+                       goto out;
+       }
+       if (cmd == APPEND)
+               ret = wimlib_overwrite(w, write_flags);
+       else
+               ret = wimlib_write(w, wimfile, WIM_ALL_IMAGES, write_flags);
        if (ret != 0)
                imagex_error("Failed to write the WIM file `%s'", wimfile);
 out:
        wimlib_free(w);
+       free(config_str);
        return ret;
 }
 
@@ -602,20 +643,24 @@ static int imagex_delete(int argc, const char **argv)
        wimfile = argv[0];
        image_num_or_name = argv[1];
 
+       ret = file_writable(wimfile);
+       if (ret != 0)
+               return ret;
+
        ret = wimlib_open_wim(wimfile, open_flags, &w);
        if (ret != 0)
                return ret;
 
        image = wimlib_resolve_image(w, image_num_or_name);
 
-       ret = verify_image_exists(image);
+       ret = verify_image_exists(image, image_num_or_name, wimfile);
        if (ret != 0)
-               goto done;
+               goto out;
 
        ret = wimlib_delete_image(w, image);
        if (ret != 0) {
                imagex_error("Failed to delete image from `%s'", wimfile);
-               goto done;
+               goto out;
        }
 
        ret = wimlib_overwrite(w, write_flags);
@@ -623,7 +668,7 @@ static int imagex_delete(int argc, const char **argv)
                imagex_error("Failed to write the file `%s' with image "
                             "deleted", wimfile);
        }
-done:
+out:
        wimlib_free(w);
        return ret;
 }
@@ -636,7 +681,6 @@ static int imagex_dir(int argc, const char **argv)
        int image;
        int ret;
        int num_images;
-       int part_number;
 
        if (argc < 2) {
                imagex_error("Must specify a WIM file");
@@ -654,20 +698,11 @@ static int imagex_dir(int argc, const char **argv)
        if (ret != 0)
                return ret;
 
-       part_number = wimlib_get_part_number(w, NULL);
-       if (part_number != 1) {
-               imagex_error("`%s' is part %d of a split WIM!  Specify the "
-                            "first part to see the files",
-                            wimfile, part_number);
-               ret = WIMLIB_ERR_SPLIT_UNSUPPORTED;
-               goto done;
-       }
-
        if (argc == 3) {
                image = wimlib_resolve_image(w, argv[2]);
-               ret = verify_image_exists(image);
+               ret = verify_image_exists(image, argv[2], wimfile);
                if (ret != 0)
-                       goto done;
+                       goto out;
        } else {
                /* Image was not specified.  If the WIM only contains one image,
                 * choose that one; otherwise, print an error. */
@@ -677,13 +712,13 @@ static int imagex_dir(int argc, const char **argv)
                                     "select one.", wimfile, num_images);
                        usage(DIR);
                        ret = -1;
-                       goto done;
+                       goto out;
                }
                image = 1;
        }
 
        ret = wimlib_print_files(w, image);
-done:
+out:
        wimlib_free(w);
        return ret;
 }
@@ -696,7 +731,7 @@ static int imagex_export(int argc, const char **argv)
        int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
        int export_flags = 0;
        int write_flags = WIMLIB_WRITE_FLAG_SHOW_PROGRESS;
-       int compression_type = WIM_COMPRESSION_TYPE_XPRESS;
+       int compression_type;
        bool compression_type_specified = false;
        const char *src_wimfile;
        const char *src_image_num_or_name;
@@ -709,6 +744,9 @@ static int imagex_export(int argc, const char **argv)
        int image;
        struct stat stbuf;
        bool wim_is_new;
+       const char *swm_glob = NULL;
+       WIMStruct **additional_swms = NULL;
+       unsigned num_additional_swms = 0;
 
        for_opt(c, export_options) {
                switch (c) {
@@ -725,6 +763,9 @@ static int imagex_export(int argc, const char **argv)
                                return -1;
                        compression_type_specified = true;
                        break;
+               case 'r':
+                       swm_glob = optarg;
+                       break;
                default:
                        usage(EXPORT);
                        return -1;
@@ -741,67 +782,94 @@ static int imagex_export(int argc, const char **argv)
        dest_wimfile          = argv[2];
        dest_name             = (argc >= 4) ? argv[3] : NULL;
        dest_desc             = (argc >= 5) ? argv[4] : NULL;
-       ret = wimlib_open_wim(src_wimfile, open_flags, &src_w);
+       ret = wimlib_open_wim(src_wimfile,
+                             open_flags | WIMLIB_OPEN_FLAG_SPLIT_OK, &src_w);
        if (ret != 0)
                return ret;
 
-       /* Determine if the destination is an existing file or not.  
+       /* Determine if the destination is an existing file or not.
         * If so, we try to append the exported image(s) to it; otherwise, we
         * create a new WIM containing the exported image(s). */
        if (stat(dest_wimfile, &stbuf) == 0) {
+               int dest_ctype;
+
                wim_is_new = false;
                /* Destination file exists. */
                if (!S_ISREG(stbuf.st_mode) && !S_ISLNK(stbuf.st_mode)) {
                        imagex_error("`%s' is not a regular file",
                                        dest_wimfile);
-                       goto done;
+                       ret = -1;
+                       goto out;
                }
                ret = wimlib_open_wim(dest_wimfile, open_flags, &dest_w);
                if (ret != 0)
-                       goto done;
+                       goto out;
+
+               ret = file_writable(dest_wimfile);
+               if (ret != 0)
+                       return ret;
 
-               if (compression_type_specified && compression_type != 
-                               wimlib_get_compression_type(dest_w)) {
+               dest_ctype = wimlib_get_compression_type(dest_w);
+               if (compression_type_specified
+                   && compression_type != dest_ctype)
+               {
                        imagex_error("Cannot specify a compression type that is "
                                     "not the same as that used in the "
                                     "destination WIM");
                        ret = -1;
-                       goto done;
+                       goto out;
                }
-               compression_type = wimlib_get_compression_type(dest_w);
+               compression_type = dest_ctype;
        } else {
                wim_is_new = true;
                /* dest_wimfile is not an existing file, so create a new WIM. */
+               if (!compression_type_specified)
+                       compression_type = wimlib_get_compression_type(src_w);
                if (errno == ENOENT) {
                        ret = wimlib_create_new_wim(compression_type, &dest_w);
                        if (ret != 0)
-                               goto done;
+                               goto out;
                } else {
                        imagex_error_with_errno("Cannot stat file `%s'",
                                                dest_wimfile);
-                       goto done;
+                       ret = -1;
+                       goto out;
                }
        }
 
        image = wimlib_resolve_image(src_w, src_image_num_or_name);
-       ret = verify_image_exists(image);
+       ret = verify_image_exists(image, src_image_num_or_name, src_wimfile);
        if (ret != 0)
-               goto done;
+               goto out;
 
-       ret = wimlib_export_image(src_w, image, dest_w, dest_name, dest_desc, 
-                                 export_flags);
+       if (swm_glob) {
+               ret = open_swms_from_glob(swm_glob, src_wimfile, open_flags,
+                                         &additional_swms,
+                                         &num_additional_swms);
+               if (ret != 0)
+                       goto out;
+       }
+
+       ret = wimlib_export_image(src_w, image, dest_w, dest_name, dest_desc,
+                                 export_flags, additional_swms,
+                                 num_additional_swms);
        if (ret != 0)
-               goto done;
+               goto out;
 
 
        if (wim_is_new)
-               ret = wimlib_write(dest_w, dest_wimfile, WIM_ALL_IMAGES, 
+               ret = wimlib_write(dest_w, dest_wimfile, WIM_ALL_IMAGES,
                                   write_flags);
        else
                ret = wimlib_overwrite(dest_w, write_flags);
-done:
+out:
        wimlib_free(src_w);
        wimlib_free(dest_w);
+       if (additional_swms) {
+               for (unsigned i = 0; i < num_additional_swms; i++)
+                       wimlib_free(additional_swms[i]);
+               free(additional_swms);
+       }
        return ret;
 }
 
@@ -826,7 +894,7 @@ static int imagex_info(int argc, const char **argv)
        FILE *fp;
        int image;
        int ret;
-       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS | 
+       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
                         WIMLIB_OPEN_FLAG_SPLIT_OK;
        int part_number;
        int total_parts;
@@ -878,7 +946,7 @@ static int imagex_info(int argc, const char **argv)
                        new_name = argv[2];
                        if (argc > 3) {
                                new_desc = argv[3];
-                       } 
+                       }
                }
        }
 
@@ -891,23 +959,16 @@ static int imagex_info(int argc, const char **argv)
 
        part_number = wimlib_get_part_number(w, &total_parts);
 
-       /*if (total_parts > 1 && part_number > 1) {*/
-               /*printf("Warning: this is part %d of a %d-part split WIM.\n"*/
-                      /*"         Select the first part if you want to see information\n"*/
-                      /*"         about images in the WIM.\n", */
-                      /*part_number, total_parts);*/
-       /*}*/
-
        image = wimlib_resolve_image(w, image_num_or_name);
        if (image == WIM_NO_IMAGE && strcmp(image_num_or_name, "0") != 0) {
-               imagex_error("The image `%s' does not exist", 
+               imagex_error("The image `%s' does not exist",
                                                image_num_or_name);
                if (boot)
                        imagex_error("If you would like to set the boot "
                                     "index to 0, specify image \"0\" with "
                                     "the --boot flag.");
                ret = WIMLIB_ERR_INVALID_IMAGE;
-               goto done;
+               goto out;
        }
 
        if (image == WIM_ALL_IMAGES && wimlib_get_num_images(w) > 1) {
@@ -916,14 +977,14 @@ static int imagex_info(int argc, const char **argv)
                                     "without specifying a specific "
                                     "image in a multi-image WIM");
                        ret = WIMLIB_ERR_INVALID_IMAGE;
-                       goto done;
+                       goto out;
                }
                if (new_name) {
                        imagex_error("Cannot specify the NEW_NAME "
                                     "without specifying a specific "
                                     "image in a multi-image WIM");
                        ret = WIMLIB_ERR_INVALID_IMAGE;
-                       goto done;
+                       goto out;
                }
        }
 
@@ -931,11 +992,13 @@ static int imagex_info(int argc, const char **argv)
         * recreate the WIM file. */
        if (!new_name && !boot) {
 
+               /* Read-only operations */
+
                if (image == WIM_NO_IMAGE) {
                        imagex_error("`%s' is not a valid image",
                                     image_num_or_name);
                        ret = WIMLIB_ERR_INVALID_IMAGE;
-                       goto done;
+                       goto out;
                }
 
                if (image == WIM_ALL_IMAGES && short_header)
@@ -956,7 +1019,7 @@ static int imagex_info(int argc, const char **argv)
                if (xml) {
                        ret = wimlib_extract_xml_data(w, stdout);
                        if (ret != 0)
-                               goto done;
+                               goto out;
                }
 
                if (xml_out_file) {
@@ -966,34 +1029,30 @@ static int imagex_info(int argc, const char **argv)
                                                        "file `%s' for "
                                                        "writing ",
                                                        xml_out_file);
-                               goto done;
+                               goto out;
                        }
                        ret = wimlib_extract_xml_data(w, fp);
                        if (fclose(fp) != 0) {
                                imagex_error("Failed to close the file `%s'",
                                             xml_out_file);
-                               goto done;
+                               goto out;
                        }
 
                        if (ret != 0)
-                               goto done;
+                               goto out;
                }
 
                if (short_header)
                        wimlib_print_available_images(w, image);
 
                if (metadata) {
-                       if (total_parts != 1 && part_number != 1) {
-                               imagex_error("Select part 1 of this %d-part WIM "
-                                            "to see the image metadata",
-                                            total_parts);
-                               return WIMLIB_ERR_SPLIT_UNSUPPORTED;
-                       }
                        ret = wimlib_print_metadata(w, image);
                        if (ret != 0)
-                               goto done;
+                               goto out;
                }
        } else {
+
+               /* Modification operations */
                if (total_parts != 1) {
                        imagex_error("Modifying a split WIM is not supported.");
                        return -1;
@@ -1019,7 +1078,7 @@ static int imagex_info(int argc, const char **argv)
                        }
                }
                if (new_name) {
-                       if (strcmp(wimlib_get_image_name(w, image), 
+                       if (strcmp(wimlib_get_image_name(w, image),
                                                new_name) == 0) {
                                printf("Image %d is already named \"%s\".\n",
                                       image, new_name);
@@ -1029,7 +1088,7 @@ static int imagex_info(int argc, const char **argv)
                                       "\"%s\".\n", image, new_name);
                                ret = wimlib_set_image_name(w, image, new_name);
                                if (ret != 0)
-                                       goto done;
+                                       goto out;
                        }
                }
                if (new_desc) {
@@ -1042,20 +1101,24 @@ static int imagex_info(int argc, const char **argv)
                        } else {
                                printf("Changing the description of image %d "
                                       "to \"%s\".\n", image, new_desc);
-                               ret = wimlib_set_image_descripton(w, image, 
+                               ret = wimlib_set_image_descripton(w, image,
                                                                  new_desc);
                                if (ret != 0)
-                                       goto done;
+                                       goto out;
                        }
                }
 
                /* Only call wimlib_overwrite_xml_and_header() if something
                 * actually needs to be changed. */
-               if (boot || new_name || new_desc || 
+               if (boot || new_name || new_desc ||
                                check != wimlib_has_integrity_table(w)) {
 
-                       ret = wimlib_overwrite_xml_and_header(w, check ? 
-                                       WIMLIB_WRITE_FLAG_CHECK_INTEGRITY | 
+                       ret = file_writable(wimfile);
+                       if (ret != 0)
+                               return ret;
+
+                       ret = wimlib_overwrite_xml_and_header(w, check ?
+                                       WIMLIB_WRITE_FLAG_CHECK_INTEGRITY |
                                        WIMLIB_WRITE_FLAG_SHOW_PROGRESS : 0);
                } else {
                        printf("The file `%s' was not modified because nothing "
@@ -1063,9 +1126,8 @@ static int imagex_info(int argc, const char **argv)
                        ret = 0;
                }
        }
-
-done:
-       wimlib_free(w);
+out:
+       /*wimlib_free(w);*/
        return ret;
 }
 
@@ -1105,16 +1167,21 @@ static int imagex_mount_rw_or_ro(int argc, const char **argv)
 {
        int c;
        int mount_flags = 0;
-       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
+       int open_flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS |
+                        WIMLIB_OPEN_FLAG_SPLIT_OK;
        const char *wimfile;
        const char *dir;
        WIMStruct *w;
        int image;
        int num_images;
        int ret;
+       const char *swm_glob = NULL;
+       WIMStruct **additional_swms = NULL;
+       unsigned num_additional_swms = 0;
 
        if (strcmp(argv[0], "mountrw") == 0)
                mount_flags |= WIMLIB_MOUNT_FLAG_READWRITE;
+
        for_opt(c, mount_options) {
                switch (c) {
                case 'c':
@@ -1135,6 +1202,9 @@ static int imagex_mount_rw_or_ro(int argc, const char **argv)
                                goto mount_usage;
                        }
                        break;
+               case 'r':
+                       swm_glob = optarg;
+                       break;
                default:
                        goto mount_usage;
                }
@@ -1150,38 +1220,57 @@ static int imagex_mount_rw_or_ro(int argc, const char **argv)
        if (ret != 0)
                return ret;
 
+       if (swm_glob) {
+               ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
+                                         &additional_swms,
+                                         &num_additional_swms);
+               if (ret != 0)
+                       goto out;
+       }
+
        if (argc == 2) {
                image = 1;
                num_images = wimlib_get_num_images(w);
                if (num_images != 1) {
                        imagex_error("The file `%s' contains %d images; Please "
-                                    "select one", wimfile, num_images);
-                       usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)  
+                                    "select one.", wimfile, num_images);
+                       usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
                                        ? MOUNTRW : MOUNT);
-                       ret = WIMLIB_ERR_INVALID_IMAGE;
-                       goto done;
+                       ret = -1;
+                       goto out;
                }
                dir = argv[1];
        } else {
                image = wimlib_resolve_image(w, argv[1]);
                dir = argv[2];
+               ret = verify_image_exists_and_is_single(image, argv[1], wimfile);
+               if (ret != 0)
+                       goto out;
        }
 
-       ret = verify_image_exists_and_is_single(image);
-       if (ret != 0)
-               goto done;
+       if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) {
+               ret = file_writable(wimfile);
+               if (ret != 0)
+                       return ret;
+       }
 
-       ret = wimlib_mount(w, image, dir, mount_flags);
+       ret = wimlib_mount(w, image, dir, mount_flags, additional_swms,
+                          num_additional_swms);
        if (ret != 0) {
                imagex_error("Failed to mount image %d from `%s' on `%s'",
                             image, wimfile, dir);
 
        }
-done:
+out:
        wimlib_free(w);
+       if (additional_swms) {
+               for (unsigned i = 0; i < num_additional_swms; i++)
+                       wimlib_free(additional_swms[i]);
+               free(additional_swms);
+       }
        return ret;
 mount_usage:
-       usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)  
+       usage((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
                        ? MOUNTRW : MOUNT);
        return -1;
 }
@@ -1192,6 +1281,7 @@ static int imagex_split(int argc, const char **argv)
        int c;
        int flags = WIMLIB_OPEN_FLAG_SHOW_PROGRESS;
        unsigned long part_size;
+       char *tmp;
 
        for_opt(c, split_options) {
                switch (c) {
@@ -1210,7 +1300,12 @@ static int imagex_split(int argc, const char **argv)
                usage(SPLIT);
                return -1;
        }
-       part_size = strtoul(argv[2], NULL, 10) * (1 << 20);
+       part_size = strtod(argv[2], &tmp) * (1 << 20);
+       if (tmp == argv[2] || *tmp) {
+               imagex_error("Invalid part size \"%s\"", argv[2]);
+               imagex_error("The part size must be an integer or floating-point number of megabytes.");
+               return -1;
+       }
        return wimlib_split(argv[0], argv[1], part_size, flags);
 }
 
@@ -1253,29 +1348,44 @@ struct imagex_command {
        int cmd;
 };
 
-static struct imagex_command imagex_commands[] = {
-       {"append",  imagex_append,         APPEND},
-       {"apply",   imagex_apply,          APPLY},
-       {"capture", imagex_capture,        CAPTURE},
-       {"delete",  imagex_delete,         DELETE},
-       {"dir",     imagex_dir,            DIR},
-       {"export",  imagex_export,         EXPORT},
-       {"info",    imagex_info,           INFO},
-       {"join",    imagex_join,           JOIN},
-       {"mount",   imagex_mount_rw_or_ro, MOUNT},
-       {"mountrw", imagex_mount_rw_or_ro, MOUNTRW},
-       {"split",   imagex_split,          SPLIT},
-       {"unmount", imagex_unmount,        UNMOUNT},
-};
 
 #define for_imagex_command(p) for (p = &imagex_commands[0]; \
                p != &imagex_commands[ARRAY_LEN(imagex_commands)]; p++)
 
+static const struct imagex_command imagex_commands[] = {
+       {"append",  imagex_capture_or_append, APPEND},
+       {"apply",   imagex_apply,             APPLY},
+       {"capture", imagex_capture_or_append, CAPTURE},
+       {"delete",  imagex_delete,            DELETE},
+       {"dir",     imagex_dir,               DIR},
+       {"export",  imagex_export,            EXPORT},
+       {"info",    imagex_info,              INFO},
+       {"join",    imagex_join,              JOIN},
+       {"mount",   imagex_mount_rw_or_ro,    MOUNT},
+       {"mountrw", imagex_mount_rw_or_ro,    MOUNTRW},
+       {"split",   imagex_split,             SPLIT},
+       {"unmount", imagex_unmount,           UNMOUNT},
+};
+
+static void version()
+{
+       static const char *s =
+       "imagex (" PACKAGE ") " PACKAGE_VERSION "\n"
+       "Copyright (C) 2012 Eric Biggers\n"
+       "License GPLv3+; GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n"
+       "This is free software: you are free to change and redistribute it.\n"
+       "There is NO WARRANTY, to the extent permitted by law.\n"
+       "\n"
+       "Report bugs to "PACKAGE_BUGREPORT".\n";
+       fputs(s, stdout);
+}
+
+
 static void help_or_version(int argc, const char **argv)
 {
        int i;
        const char *p;
-       struct imagex_command *cmd;
+       const struct imagex_command *cmd;
 
        for (i = 1; i < argc; i++) {
                p = argv[i];
@@ -1285,7 +1395,7 @@ static void help_or_version(int argc, const char **argv)
                        continue;
                if (*p == '-')
                        p++;
-               if (strcmp(p, "help") == 0 || (*p == '?' && *(p + 1) == '\0')) {
+               if (strcmp(p, "help") == 0) {
                        for_imagex_command(cmd) {
                                if (strcmp(cmd->name, argv[1]) == 0) {
                                        usage(cmd->cmd);
@@ -1303,9 +1413,37 @@ static void help_or_version(int argc, const char **argv)
 }
 
 
+static void usage(int cmd_type)
+{
+       const struct imagex_command *cmd;
+       printf("Usage: %s", usage_strings[cmd_type]);
+       for_imagex_command(cmd) {
+               if (cmd->cmd == cmd_type)
+                       printf("\nTry `man imagex-%s' for more details.\n",
+                              cmd->name);
+       }
+}
+
+static void usage_all()
+{
+       puts("IMAGEX: Usage:");
+       for (int i = 0; i < ARRAY_LEN(usage_strings); i++)
+               fputs(usage_strings[i], stdout);
+       static const char *extra =
+"    imagex --help\n"
+"    imagex --version\n"
+"\n"
+"    The compression TYPE may be \"maximum\", \"fast\", or \"none\".\n"
+"\n"
+"    Try `man imagex' for more information.\n"
+       ;
+       fputs(extra, stdout);
+}
+
+
 int main(int argc, const char **argv)
 {
-       struct imagex_command *cmd;
+       const struct imagex_command *cmd;
        int ret;
 
        if (argc < 2) {
@@ -1338,10 +1476,3 @@ int main(int argc, const char **argv)
        usage_all();
        return 1;
 }
-/*#ifndef WITH_NTFS_3G*/
-               /*ERROR("wimlib was not compiled with support for NTFS-3g, so we cannot extract");*/
-               /*ERROR("a WIM to a NTFS filesystem while preserving NTFS-specific metadata.");*/
-               /*ERROR("Please apply the WIM to a directory rather than a block device, ");*/
-               /*ERROR("and without the NTFS flag; or compile in support for NTFS-3g.");*/
-               /*return WIMLIB_ERR_UNSUPPORTED;*/
-/*#endif*/