]> wimlib.net Git - wimlib/blobdiff - programs/imagex.c
Fix problem where HAVE_NTFS_MNT_RDONLY would not get defined
[wimlib] / programs / imagex.c
index b78fa325abd37488f4954947c15771fe1ac68171..854be037e42ac281dd25eba5685f017bee191d69 100644 (file)
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+#  include "config.h" /* Need for PACKAGE_VERSION, etc. */
+#endif
+
 #include "wimlib.h"
 #include "wimlib_tchar.h"
 
@@ -40,7 +43,7 @@
 #include <locale.h>
 
 #ifdef HAVE_ALLOCA_H
-#include <alloca.h>
+#  include <alloca.h>
 #endif
 
 #ifdef __WIN32__
@@ -68,6 +71,7 @@ enum imagex_op_type {
        DELETE,
        DIR,
        EXPORT,
+       EXTRACT,
        INFO,
        JOIN,
        MOUNT,
@@ -75,10 +79,13 @@ enum imagex_op_type {
        OPTIMIZE,
        SPLIT,
        UNMOUNT,
+       UPDATE,
 };
 
 static void usage(int cmd_type);
-static void usage_all();
+static void usage_all(void);
+
+static bool imagex_be_quiet = false;
 
 
 static const tchar *usage_strings[] = {
@@ -89,13 +96,14 @@ IMAGEX_PROGNAME" append (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
 "                     [--verbose] [--dereference] [--config=FILE]\n"
 "                     [--threads=NUM_THREADS] [--rebuild] [--unix-data]\n"
 "                     [--source-list] [--no-acls] [--strict-acls]\n"
+"                     [--rpfix] [--norpfix]\n"
 ),
 [APPLY] =
 T(
 IMAGEX_PROGNAME" apply WIMFILE [IMAGE_NUM | IMAGE_NAME | all]\n"
 "                    (DIRECTORY | NTFS_VOLUME) [--check] [--hardlink]\n"
 "                    [--symlink] [--verbose] [--ref=\"GLOB\"] [--unix-data]\n"
-"                    [--no-acls] [--strict-acls]\n"
+"                    [--no-acls] [--strict-acls] [--rpfix] [--norpfix]\n"
 ),
 [CAPTURE] =
 T(
@@ -104,6 +112,7 @@ IMAGEX_PROGNAME" capture (DIRECTORY | NTFS_VOLUME) WIMFILE [IMAGE_NAME]\n"
 "                      [--flags EDITION_ID] [--verbose] [--dereference]\n"
 "                      [--config=FILE] [--threads=NUM_THREADS] [--unix-data]\n"
 "                      [--source-list] [--no-acls] [--strict-acls]\n"
+"                      [--rpfix] [--norpfix]\n"
 ),
 [DELETE] =
 T(
@@ -120,6 +129,12 @@ IMAGEX_PROGNAME" export SRC_WIMFILE (SRC_IMAGE_NUM | SRC_IMAGE_NAME | all ) \n"
 "              [--boot] [--check] [--compress=TYPE] [--ref=\"GLOB\"]\n"
 "              [--threads=NUM_THREADS] [--rebuild]\n"
 ),
+[EXTRACT] =
+T(
+IMAGEX_PROGNAME" extract WIMFILE (IMAGE_NUM | IMAGE_NAME) [PATH...]\n"
+"              [--check] [--ref=\"GLOB\"] [--verbose] [--unix-data]\n"
+"              [--no-acls] [--strict-acls] [--to-stdout] [--dest-dir=DIR]\n"
+),
 [INFO] =
 T(
 IMAGEX_PROGNAME" info WIMFILE [IMAGE_NUM | IMAGE_NAME] [NEW_NAME]\n"
@@ -145,6 +160,7 @@ IMAGEX_PROGNAME" mountrw WIMFILE [IMAGE_NUM | IMAGE_NAME] DIRECTORY\n"
 [OPTIMIZE] =
 T(
 IMAGEX_PROGNAME" optimize WIMFILE [--check] [--recompress]\n"
+"                      [--threads=NUM_THREADS]\n"
 ),
 [SPLIT] =
 T(
@@ -152,10 +168,31 @@ IMAGEX_PROGNAME" split WIMFILE SPLIT_WIMFILE PART_SIZE_MB [--check]\n"
 ),
 [UNMOUNT] =
 T(
-IMAGEX_PROGNAME" unmount DIRECTORY [--commit] [--check] [--rebuild]\n"
+IMAGEX_PROGNAME" unmount DIRECTORY [--commit] [--check] [--rebuild] [--lazy]\n"
+),
+[UPDATE] =
+T(
+IMAGEX_PROGNAME" update WIMFILE [IMAGE_NUM | IMAGE_NAME] [--check] [--rebuild]\n"
+"                       [--threads=NUM_THREADS] [DEFAULT_ADD_OPTIONS]\n"
+"                       [DEFAULT_DELETE_OPTIONS] < CMDFILE\n"
 ),
 };
 
+
+static void
+recommend_man_page(const tchar *cmd_name)
+{
+       const tchar *format_str;
+#ifdef __WIN32__
+       format_str = T("See "IMAGEX_PROGNAME"%"TS"%"TS".pdf in the "
+                      "doc directory for more details.\n");
+#else
+       format_str = T("Try `man "IMAGEX_PROGNAME"%"TS"%"TS"' "
+                      "for more details.\n");
+#endif
+       tprintf(format_str, *cmd_name ? T("-") : T(""), cmd_name);
+}
+
 enum {
        IMAGEX_ALLOW_OTHER_OPTION,
        IMAGEX_BOOT_OPTION,
@@ -165,16 +202,22 @@ enum {
        IMAGEX_CONFIG_OPTION,
        IMAGEX_DEBUG_OPTION,
        IMAGEX_DEREFERENCE_OPTION,
+       IMAGEX_DEST_DIR_OPTION,
        IMAGEX_EXTRACT_XML_OPTION,
        IMAGEX_FLAGS_OPTION,
+       IMAGEX_FORCE_OPTION,
        IMAGEX_HARDLINK_OPTION,
        IMAGEX_HEADER_OPTION,
+       IMAGEX_LAZY_OPTION,
        IMAGEX_LOOKUP_TABLE_OPTION,
        IMAGEX_METADATA_OPTION,
+       IMAGEX_NORPFIX_OPTION,
        IMAGEX_NO_ACLS_OPTION,
-       IMAGEX_REBULID_OPTION,
+       IMAGEX_REBUILD_OPTION,
        IMAGEX_RECOMPRESS_OPTION,
+       IMAGEX_RECURSIVE_OPTION,
        IMAGEX_REF_OPTION,
+       IMAGEX_RPFIX_OPTION,
        IMAGEX_SOFT_OPTION,
        IMAGEX_SOURCE_LIST_OPTION,
        IMAGEX_STAGING_DIR_OPTION,
@@ -182,6 +225,7 @@ enum {
        IMAGEX_STRICT_ACLS_OPTION,
        IMAGEX_SYMLINK_OPTION,
        IMAGEX_THREADS_OPTION,
+       IMAGEX_TO_STDOUT_OPTION,
        IMAGEX_UNIX_DATA_OPTION,
        IMAGEX_VERBOSE_OPTION,
        IMAGEX_XML_OPTION,
@@ -197,6 +241,8 @@ static const struct option apply_options[] = {
        {T("noacls"),      no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
        {T("no-acls"),     no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
        {T("strict-acls"), no_argument,       NULL, IMAGEX_STRICT_ACLS_OPTION},
+       {T("rpfix"),       no_argument,       NULL, IMAGEX_RPFIX_OPTION},
+       {T("norpfix"),     no_argument,       NULL, IMAGEX_NORPFIX_OPTION},
        {NULL, 0, NULL, 0},
 };
 static const struct option capture_or_append_options[] = {
@@ -208,12 +254,14 @@ static const struct option capture_or_append_options[] = {
        {T("flags"),       required_argument, NULL, IMAGEX_FLAGS_OPTION},
        {T("verbose"),     no_argument,       NULL, IMAGEX_VERBOSE_OPTION},
        {T("threads"),     required_argument, NULL, IMAGEX_THREADS_OPTION},
-       {T("rebuild"),     no_argument,       NULL, IMAGEX_REBULID_OPTION},
+       {T("rebuild"),     no_argument,       NULL, IMAGEX_REBUILD_OPTION},
        {T("unix-data"),   no_argument,       NULL, IMAGEX_UNIX_DATA_OPTION},
        {T("source-list"), no_argument,       NULL, IMAGEX_SOURCE_LIST_OPTION},
        {T("noacls"),      no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
        {T("no-acls"),     no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
        {T("strict-acls"), no_argument,       NULL, IMAGEX_STRICT_ACLS_OPTION},
+       {T("rpfix"),       no_argument,       NULL, IMAGEX_RPFIX_OPTION},
+       {T("norpfix"),     no_argument,       NULL, IMAGEX_NORPFIX_OPTION},
        {NULL, 0, NULL, 0},
 };
 static const struct option delete_options[] = {
@@ -228,7 +276,20 @@ static const struct option export_options[] = {
        {T("compress"),   required_argument, NULL, IMAGEX_COMPRESS_OPTION},
        {T("ref"),        required_argument, NULL, IMAGEX_REF_OPTION},
        {T("threads"),    required_argument, NULL, IMAGEX_THREADS_OPTION},
-       {T("rebuild"),    no_argument,       NULL, IMAGEX_REBULID_OPTION},
+       {T("rebuild"),    no_argument,       NULL, IMAGEX_REBUILD_OPTION},
+       {NULL, 0, NULL, 0},
+};
+
+static const struct option extract_options[] = {
+       {T("check"),       no_argument,       NULL, IMAGEX_CHECK_OPTION},
+       {T("verbose"),     no_argument,       NULL, IMAGEX_VERBOSE_OPTION},
+       {T("ref"),         required_argument, NULL, IMAGEX_REF_OPTION},
+       {T("unix-data"),   no_argument,       NULL, IMAGEX_UNIX_DATA_OPTION},
+       {T("noacls"),      no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
+       {T("no-acls"),     no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
+       {T("strict-acls"), no_argument,       NULL, IMAGEX_STRICT_ACLS_OPTION},
+       {T("dest-dir"),    required_argument, NULL, IMAGEX_DEST_DIR_OPTION},
+       {T("to-stdout"),   no_argument,       NULL, IMAGEX_TO_STDOUT_OPTION},
        {NULL, 0, NULL, 0},
 };
 
@@ -262,6 +323,7 @@ static const struct option mount_options[] = {
 static const struct option optimize_options[] = {
        {T("check"),      no_argument, NULL, IMAGEX_CHECK_OPTION},
        {T("recompress"), no_argument, NULL, IMAGEX_RECOMPRESS_OPTION},
+       {T("threads"),    required_argument, NULL, IMAGEX_THREADS_OPTION},
        {NULL, 0, NULL, 0},
 };
 
@@ -273,11 +335,36 @@ static const struct option split_options[] = {
 static const struct option unmount_options[] = {
        {T("commit"),  no_argument, NULL, IMAGEX_COMMIT_OPTION},
        {T("check"),   no_argument, NULL, IMAGEX_CHECK_OPTION},
-       {T("rebuild"), no_argument, NULL, IMAGEX_REBULID_OPTION},
+       {T("rebuild"), no_argument, NULL, IMAGEX_REBUILD_OPTION},
+       {T("lazy"),    no_argument, NULL, IMAGEX_LAZY_OPTION},
        {NULL, 0, NULL, 0},
 };
 
+static const struct option update_options[] = {
+       /* Careful: some of the options here set the defaults for update
+        * commands, but the flags given to an actual update command (and not to
+        * `imagex update' itself are also handled in
+        * update_command_add_option().  */
+       {T("threads"),     required_argument, NULL, IMAGEX_THREADS_OPTION},
+       {T("check"),       no_argument,       NULL, IMAGEX_CHECK_OPTION},
+       {T("rebuild"),     no_argument,       NULL, IMAGEX_REBUILD_OPTION},
+
+       /* Default delete options */
+       {T("force"),       no_argument,       NULL, IMAGEX_FORCE_OPTION},
+       {T("recursive"),   no_argument,       NULL, IMAGEX_RECURSIVE_OPTION},
 
+       /* Global add option */
+       {T("config"),      required_argument, NULL, IMAGEX_CONFIG_OPTION},
+
+       /* Default add options */
+       {T("verbose"),     no_argument,       NULL, IMAGEX_VERBOSE_OPTION},
+       {T("dereference"), no_argument,       NULL, IMAGEX_DEREFERENCE_OPTION},
+       {T("unix-data"),   no_argument,       NULL, IMAGEX_UNIX_DATA_OPTION},
+       {T("noacls"),      no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
+       {T("no-acls"),     no_argument,       NULL, IMAGEX_NO_ACLS_OPTION},
+       {T("strict-acls"), no_argument,       NULL, IMAGEX_STRICT_ACLS_OPTION},
+       {NULL, 0, NULL, 0},
+};
 
 /* Print formatted error message to stderr. */
 static void
@@ -393,36 +480,35 @@ static struct wimlib_capture_config default_capture_config = {
 };
 
 enum {
-       PARSE_FILENAME_SUCCESS = 0,
-       PARSE_FILENAME_FAILURE = 1,
-       PARSE_FILENAME_NONE = 2,
+       PARSE_STRING_SUCCESS = 0,
+       PARSE_STRING_FAILURE = 1,
+       PARSE_STRING_NONE = 2,
 };
 
 /*
- * Parses a filename in the source list file format.  (See the man page for
- * 'wimlib-imagex capture' for details on this format and the meaning.)
- * Accepted formats for filenames are an unquoted string (whitespace-delimited),
- * or a double or single-quoted string.
+ * Parses a string token from an array of characters.
+ *
+ * Tokens are either whitespace-delimited, or double or single-quoted.
  *
  * @line_p:  Pointer to the pointer to the line of data.  Will be updated
- *           to point past the filename iff the return value is
- *           PARSE_FILENAME_SUCCESS.  If *len_p > 0, (*line_p)[*len_p - 1] must
+ *           to point past the string token iff the return value is
+ *           PARSE_STRING_SUCCESS.  If *len_p > 0, (*line_p)[*len_p - 1] must
  *           be '\0'.
  *
  * @len_p:   @len_p initially stores the length of the line of data, which may
  *           be 0, and it will be updated to the number of bytes remaining in
- *           the line iff the return value is PARSE_FILENAME_SUCCESS.
+ *           the line iff the return value is PARSE_STRING_SUCCESS.
  *
- * @fn_ret:  Iff the return value is PARSE_FILENAME_SUCCESS, a pointer to the
- *           parsed filename will be returned here.
+ * @fn_ret:  Iff the return value is PARSE_STRING_SUCCESS, a pointer to the
+ *           parsed string token will be returned here.
  *
- * Returns: PARSE_FILENAME_SUCCESS if a filename was successfully parsed; or
- *          PARSE_FILENAME_FAILURE if the data was invalid due to a missing
- *          closing quote; or PARSE_FILENAME_NONE if the line ended before the
- *          beginning of a filename was found.
+ * Returns: PARSE_STRING_SUCCESS if a string token was successfully parsed; or
+ *          PARSE_STRING_FAILURE if the data was invalid due to a missing
+ *          closing quote; or PARSE_STRING_NONE if the line ended before the
+ *          beginning of a string token was found.
  */
 static int
-parse_filename(tchar **line_p, size_t *len_p, tchar **fn_ret)
+parse_string(tchar **line_p, size_t *len_p, tchar **fn_ret)
 {
        size_t len = *len_p;
        tchar *line = *line_p;
@@ -432,7 +518,7 @@ parse_filename(tchar **line_p, size_t *len_p, tchar **fn_ret)
        /* Skip leading whitespace */
        for (;;) {
                if (len == 0)
-                       return PARSE_FILENAME_NONE;
+                       return PARSE_STRING_NONE;
                if (!istspace(*line) && *line != T('\0'))
                        break;
                line++;
@@ -440,17 +526,17 @@ parse_filename(tchar **line_p, size_t *len_p, tchar **fn_ret)
        }
        quote_char = *line;
        if (quote_char == T('"') || quote_char == T('\'')) {
-               /* Quoted filename */
+               /* Quoted string */
                line++;
                len--;
                fn = line;
                line = tmemchr(line, quote_char, len);
                if (!line) {
                        imagex_error(T("Missing closing quote: %"TS), fn - 1);
-                       return PARSE_FILENAME_FAILURE;
+                       return PARSE_STRING_FAILURE;
                }
        } else {
-               /* Unquoted filename.  Go until whitespace.  Line is terminated
+               /* Unquoted string.  Go until whitespace.  Line is terminated
                 * by '\0', so no need to check 'len'. */
                fn = line;
                do {
@@ -462,7 +548,7 @@ parse_filename(tchar **line_p, size_t *len_p, tchar **fn_ret)
        *len_p = len;
        *line_p = line;
        *fn_ret = fn;
-       return PARSE_FILENAME_SUCCESS;
+       return PARSE_STRING_SUCCESS;
 }
 
 /* Parses a line of data (not an empty line or comment) in the source list file
@@ -485,13 +571,13 @@ parse_source_list_line(tchar *line, size_t len,
 {
        /* SOURCE [DEST] */
        int ret;
-       ret = parse_filename(&line, &len, &source->fs_source_path);
-       if (ret != PARSE_FILENAME_SUCCESS)
+       ret = parse_string(&line, &len, &source->fs_source_path);
+       if (ret != PARSE_STRING_SUCCESS)
                return false;
-       ret = parse_filename(&line, &len, &source->wim_target_path);
-       if (ret == PARSE_FILENAME_NONE)
+       ret = parse_string(&line, &len, &source->wim_target_path);
+       if (ret == PARSE_STRING_NONE)
                source->wim_target_path = source->fs_source_path;
-       return ret != PARSE_FILENAME_FAILURE;
+       return ret != PARSE_STRING_FAILURE;
 }
 
 /* Returns %true if the given line of length @len > 0 is a comment or empty line
@@ -691,12 +777,12 @@ parse_capture_config_line(tchar *line, size_t len,
                               "(such as [ExclusionList]"), line);
                return false;
        case CAPTURE_CONFIG_EXCLUSION_SECTION:
-               if (parse_filename(&line, &len, &filename) != PARSE_FILENAME_SUCCESS)
+               if (parse_string(&line, &len, &filename) != PARSE_STRING_SUCCESS)
                        return false;
                return pattern_list_add_pattern(&config->exclusion_pats,
                                                filename);
        case CAPTURE_CONFIG_EXCLUSION_EXCEPTION_SECTION:
-               if (parse_filename(&line, &len, &filename) != PARSE_FILENAME_SUCCESS)
+               if (parse_string(&line, &len, &filename) != PARSE_STRING_SUCCESS)
                        return false;
                return pattern_list_add_pattern(&config->exclusion_exception_pats,
                                                filename);
@@ -821,8 +907,7 @@ stdin_get_contents(size_t *len_ret)
 
 
 static tchar *
-translate_text_to_tstr(char *text, size_t num_bytes,
-                      size_t *num_tchars_ret)
+translate_text_to_tstr(char *text, size_t num_bytes, size_t *num_tchars_ret)
 {
 #ifndef __WIN32__
        /* On non-Windows, assume an ASCII-compatible encoding, such as UTF-8.
@@ -920,6 +1005,8 @@ imagex_progress_func(enum wimlib_progress_msg msg,
                     const union wimlib_progress_info *info)
 {
        unsigned percent_done;
+       if (imagex_be_quiet)
+               return 0;
        switch (msg) {
        case WIMLIB_PROGRESS_MSG_WRITE_STREAMS:
                percent_done = TO_PERCENT(info->write_streams.completed_bytes,
@@ -981,7 +1068,7 @@ imagex_progress_func(enum wimlib_progress_msg msg,
                        tputchar(T('\n'));
                break;
        case WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_BEGIN:
-               tprintf(T("Applying image %d (%"TS") from \"%"TS"\" "
+               tprintf(T("Applying image %d (\"%"TS"\") from \"%"TS"\" "
                          "to %"TS" \"%"TS"\"\n"),
                        info->extract.image,
                        info->extract.image_name,
@@ -990,6 +1077,15 @@ imagex_progress_func(enum wimlib_progress_msg msg,
                         T("NTFS volume") : T("directory")),
                        info->extract.target);
                break;
+       case WIMLIB_PROGRESS_MSG_EXTRACT_TREE_BEGIN:
+               tprintf(T("Extracting \"%"TS"\" from image %d (\"%"TS"\") "
+                         "in \"%"TS"\" to \"%"TS"\"\n"),
+                       info->extract.extract_root_wim_source_path,
+                       info->extract.image,
+                       info->extract.image_name,
+                       info->extract.wimfile_name,
+                       info->extract.target);
+               break;
        /*case WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN:*/
                /*tprintf(T("Applying directory structure to %"TS"\n"),*/
                        /*info->extract.target);*/
@@ -1009,7 +1105,8 @@ imagex_progress_func(enum wimlib_progress_msg msg,
                tprintf(T("%"TS"\n"), info->extract.cur_path);
                break;
        case WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS:
-               tprintf(T("Setting timestamps on all extracted files...\n"));
+               if (info->extract.extract_root_wim_source_path[0] == T('\0'))
+                       tprintf(T("Setting timestamps on all extracted files...\n"));
                break;
        case WIMLIB_PROGRESS_MSG_EXTRACT_IMAGE_END:
                if (info->extract.extract_flags & WIMLIB_EXTRACT_FLAG_NTFS) {
@@ -1129,6 +1226,213 @@ parse_num_threads(const tchar *optarg)
        }
 }
 
+/*
+ * Parse an option passed to an update command.
+ *
+ * @op:                One of WIMLIB_UPDATE_OP_* that indicates the command being
+ *             parsed.
+ *
+ * @option:    Text string for the option (beginning with --)
+ *
+ * @cmd:       `struct wimlib_update_command' that is being constructed for
+ *             this command.
+ *
+ * Returns true if the option was recognized; false if not.
+ */
+static bool
+update_command_add_option(int op, const tchar *option,
+                         struct wimlib_update_command *cmd)
+{
+       bool recognized = true;
+       switch (op) {
+       case WIMLIB_UPDATE_OP_ADD:
+               if (!tstrcmp(option, T("--verbose")))
+                       cmd->add.add_flags |= WIMLIB_ADD_IMAGE_FLAG_VERBOSE;
+               else if (!tstrcmp(option, T("--unix-data")))
+                       cmd->add.add_flags |= WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA;
+               else if (!tstrcmp(option, T("--no-acls")) || !tstrcmp(option, T("--noacls")))
+                       cmd->add.add_flags |= WIMLIB_ADD_IMAGE_FLAG_NO_ACLS;
+               else if (!tstrcmp(option, T("--strict-acls")))
+                       cmd->add.add_flags |= WIMLIB_ADD_IMAGE_FLAG_STRICT_ACLS;
+               else if (!tstrcmp(option, T("--dereference")))
+                       cmd->add.add_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
+               else
+                       recognized = false;
+               break;
+       case WIMLIB_UPDATE_OP_DELETE:
+               if (!tstrcmp(option, T("--force")))
+                       cmd->delete.delete_flags |= WIMLIB_DELETE_FLAG_FORCE;
+               else if (!tstrcmp(option, T("--recursive")))
+                       cmd->delete.delete_flags |= WIMLIB_DELETE_FLAG_RECURSIVE;
+               else
+                       recognized = false;
+               break;
+       default:
+               recognized = false;
+               break;
+       }
+       return recognized;
+}
+
+/* How many nonoption arguments each `imagex update' command expects */
+static const unsigned update_command_num_nonoptions[] = {
+       [WIMLIB_UPDATE_OP_ADD] = 2,
+       [WIMLIB_UPDATE_OP_DELETE] = 1,
+       [WIMLIB_UPDATE_OP_RENAME] = 2,
+};
+
+static void
+update_command_add_nonoption(int op, const tchar *nonoption,
+                            struct wimlib_update_command *cmd,
+                            unsigned num_nonoptions)
+{
+       switch (op) {
+       case WIMLIB_UPDATE_OP_ADD:
+               if (num_nonoptions == 0)
+                       cmd->add.fs_source_path = (tchar*)nonoption;
+               else
+                       cmd->add.wim_target_path = (tchar*)nonoption;
+               break;
+       case WIMLIB_UPDATE_OP_DELETE:
+               cmd->delete.wim_path = (tchar*)nonoption;
+               break;
+       case WIMLIB_UPDATE_OP_RENAME:
+               if (num_nonoptions == 0)
+                       cmd->rename.wim_source_path = (tchar*)nonoption;
+               else
+                       cmd->rename.wim_target_path = (tchar*)nonoption;
+               break;
+       }
+}
+
+/*
+ * Parse a command passed on stdin to `imagex update'.
+ *
+ * @line:      Text of the command.
+ * @len:       Length of the line, including a null terminator
+ *             at line[len - 1].
+ *
+ * @command:   A `struct wimlib_update_command' to fill in from the parsed
+ *             line.
+ *
+ * @line_number: Line number of the command, for diagnostics.
+ *
+ * Returns true on success; returns false on parse error.
+ */
+static bool
+parse_update_command(tchar *line, size_t len,
+                    struct wimlib_update_command *command,
+                    size_t line_number)
+{
+       int ret;
+       tchar *command_name;
+       int op;
+       size_t num_nonoptions;
+
+       /* Get the command name ("add", "delete", "rename") */
+       ret = parse_string(&line, &len, &command_name);
+       if (ret != PARSE_STRING_SUCCESS)
+               return false;
+
+       if (!tstrcasecmp(command_name, T("add"))) {
+               op = WIMLIB_UPDATE_OP_ADD;
+       } else if (!tstrcasecmp(command_name, T("delete"))) {
+               op = WIMLIB_UPDATE_OP_DELETE;
+       } else if (!tstrcasecmp(command_name, T("rename"))) {
+               op = WIMLIB_UPDATE_OP_RENAME;
+       } else {
+               imagex_error(T("Unknown update command \"%"TS"\" on line %zu"),
+                            command_name, line_number);
+               return false;
+       }
+       command->op = op;
+
+       /* Parse additional options and non-options as needed */
+       num_nonoptions = 0;
+       for (;;) {
+               tchar *next_string;
+
+               ret = parse_string(&line, &len, &next_string);
+               if (ret == PARSE_STRING_NONE) /* End of line */
+                       break;
+               else if (ret != PARSE_STRING_SUCCESS) /* Parse failure */
+                       return false;
+               if (next_string[0] == T('-') && next_string[1] == T('-')) {
+                       /* Option */
+                       if (!update_command_add_option(op, next_string, command))
+                       {
+                               imagex_error(T("Unrecognized option \"%"TS"\" to "
+                                              "update command \"%"TS"\" on line %zu"),
+                                            next_string, command_name, line_number);
+
+                               return false;
+                       }
+               } else {
+                       /* Nonoption */
+                       if (num_nonoptions == update_command_num_nonoptions[op])
+                       {
+                               imagex_error(T("Unexpected argument \"%"TS"\" in "
+                                              "update command on line %zu\n"
+                                              "       (The \"%"TS"\" command only "
+                                              "takes %u nonoption arguments!)\n"),
+                                            next_string, line_number,
+                                            command_name, num_nonoptions);
+                               return false;
+                       }
+                       update_command_add_nonoption(op, next_string,
+                                                    command, num_nonoptions);
+                       num_nonoptions++;
+               }
+       }
+
+       if (num_nonoptions != update_command_num_nonoptions[op]) {
+               imagex_error(T("Not enough arguments to update command "
+                              "\"%"TS"\" on line %zu"), command_name, line_number);
+               return false;
+       }
+       return true;
+}
+
+static struct wimlib_update_command *
+parse_update_command_file(tchar **cmd_file_contents_p, size_t cmd_file_nchars,
+                         size_t *num_cmds_ret)
+{
+       ssize_t nlines;
+       tchar *p;
+       struct wimlib_update_command *cmds;
+       size_t i, j;
+
+       nlines = text_file_count_lines(cmd_file_contents_p,
+                                      &cmd_file_nchars);
+       if (nlines < 0)
+               return NULL;
+
+       /* Always allocate at least 1 slot, just in case the implementation of
+        * calloc() returns NULL if 0 bytes are requested. */
+       cmds = calloc(nlines ?: 1, sizeof(struct wimlib_update_command));
+       if (!cmds) {
+               imagex_error(T("out of memory"));
+               return NULL;
+       }
+       p = *cmd_file_contents_p;
+       j = 0;
+       for (i = 0; i < nlines; i++) {
+               /* XXX: Could use rawmemchr() here instead, but it may not be
+                * available on all platforms. */
+               tchar *endp = tmemchr(p, T('\n'), cmd_file_nchars);
+               size_t len = endp - p + 1;
+               *endp = T('\0');
+               if (!is_comment_line(p, len)) {
+                       if (!parse_update_command(p, len, &cmds[j++], i + 1)) {
+                               free(cmds);
+                               return NULL;
+                       }
+               }
+               p = endp + 1;
+       }
+       *num_cmds_ret = j;
+       return cmds;
+}
 
 /* Apply one image, or all images, from a WIM file into a directory, OR apply
  * one image from a WIM file to a NTFS volume. */
@@ -1176,6 +1480,12 @@ imagex_apply(int argc, tchar **argv)
                case IMAGEX_STRICT_ACLS_OPTION:
                        extract_flags |= WIMLIB_EXTRACT_FLAG_STRICT_ACLS;
                        break;
+               case IMAGEX_NORPFIX_OPTION:
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_NORPFIX;
+                       break;
+               case IMAGEX_RPFIX_OPTION:
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_RPFIX;
+                       break;
                default:
                        usage(APPLY);
                        return -1;
@@ -1327,7 +1637,7 @@ imagex_capture_or_append(int argc, tchar **argv)
                        if (num_threads == UINT_MAX)
                                return -1;
                        break;
-               case IMAGEX_REBULID_OPTION:
+               case IMAGEX_REBUILD_OPTION:
                        write_flags |= WIMLIB_WRITE_FLAG_REBUILD;
                        break;
                case IMAGEX_UNIX_DATA_OPTION:
@@ -1342,6 +1652,12 @@ imagex_capture_or_append(int argc, tchar **argv)
                case IMAGEX_STRICT_ACLS_OPTION:
                        add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_STRICT_ACLS;
                        break;
+               case IMAGEX_RPFIX_OPTION:
+                       add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_RPFIX;
+                       break;
+               case IMAGEX_NORPFIX_OPTION:
+                       add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_NORPFIX;
+                       break;
                default:
                        usage(cmd);
                        return -1;
@@ -1677,7 +1993,7 @@ imagex_export(int argc, tchar **argv)
                        if (num_threads == UINT_MAX)
                                return -1;
                        break;
-               case IMAGEX_REBULID_OPTION:
+               case IMAGEX_REBUILD_OPTION:
                        write_flags |= WIMLIB_WRITE_FLAG_REBUILD;
                        break;
                default:
@@ -1793,6 +2109,191 @@ out:
        return ret;
 }
 
+static bool
+is_root_wim_path(const tchar *path)
+{
+       const tchar *p;
+       for (p = path; *p; p++)
+               if (*p != T('\\') && *p != T('/'))
+                       return false;
+       return true;
+}
+
+static void
+free_extract_commands(struct wimlib_extract_command *cmds, size_t num_cmds,
+                     const tchar *dest_dir)
+{
+       for (size_t i = 0; i < num_cmds; i++)
+               if (cmds[i].fs_dest_path != dest_dir)
+                       free(cmds[i].fs_dest_path);
+       free(cmds);
+}
+
+static struct wimlib_extract_command *
+prepare_extract_commands(tchar **paths, unsigned num_paths,
+                        int extract_flags, tchar *dest_dir,
+                        size_t *num_cmds_ret)
+{
+       struct wimlib_extract_command *cmds;
+       size_t num_cmds;
+       tchar *emptystr = T("");
+
+       if (num_paths == 0) {
+               num_paths = 1;
+               paths = &emptystr;
+       }
+       num_cmds = num_paths;
+       cmds = calloc(num_cmds, sizeof(cmds[0]));
+       if (!cmds) {
+               imagex_error(T("Out of memory!"));
+               return NULL;
+       }
+
+       for (size_t i = 0; i < num_cmds; i++) {
+               cmds[i].extract_flags = extract_flags;
+               cmds[i].wim_source_path = paths[i];
+               if (is_root_wim_path(paths[i])) {
+                       cmds[i].fs_dest_path = dest_dir;
+               } else {
+                       size_t len = tstrlen(dest_dir) + 1 + tstrlen(paths[i]);
+                       cmds[i].fs_dest_path = malloc((len + 1) * sizeof(tchar));
+                       if (!cmds[i].fs_dest_path) {
+                               free_extract_commands(cmds, num_cmds, dest_dir);
+                               return NULL;
+                       }
+                       tsprintf(cmds[i].fs_dest_path, T("%"TS"/%"TS), dest_dir,
+                                tbasename(paths[i]));
+               }
+       }
+       *num_cmds_ret = num_cmds;
+       return cmds;
+}
+
+/* Extract files or directories from a WIM image */
+static int
+imagex_extract(int argc, tchar **argv)
+{
+       int c;
+       int open_flags = WIMLIB_OPEN_FLAG_SPLIT_OK;
+       int image;
+       WIMStruct *wim;
+       int ret;
+       const tchar *wimfile;
+       const tchar *image_num_or_name;
+       tchar *dest_dir = T(".");
+       int extract_flags = WIMLIB_EXTRACT_FLAG_SEQUENTIAL | WIMLIB_EXTRACT_FLAG_NORPFIX;
+
+       const tchar *swm_glob = NULL;
+       WIMStruct **additional_swms = NULL;
+       unsigned num_additional_swms = 0;
+
+       struct wimlib_extract_command *cmds;
+       size_t num_cmds;
+
+       for_opt(c, extract_options) {
+               switch (c) {
+               case IMAGEX_CHECK_OPTION:
+                       open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
+                       break;
+               case IMAGEX_VERBOSE_OPTION:
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_VERBOSE;
+                       break;
+               case IMAGEX_REF_OPTION:
+                       swm_glob = optarg;
+                       break;
+               case IMAGEX_UNIX_DATA_OPTION:
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_UNIX_DATA;
+                       break;
+               case IMAGEX_NO_ACLS_OPTION:
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_NO_ACLS;
+                       break;
+               case IMAGEX_STRICT_ACLS_OPTION:
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_STRICT_ACLS;
+                       break;
+               case IMAGEX_DEST_DIR_OPTION:
+                       dest_dir = optarg;
+                       break;
+               case IMAGEX_TO_STDOUT_OPTION:
+                       extract_flags |= WIMLIB_EXTRACT_FLAG_TO_STDOUT;
+                       imagex_be_quiet = true;
+                       break;
+               default:
+                       goto out_usage;
+               }
+       }
+       argc -= optind;
+       argv += optind;
+
+       if (argc < 2)
+               goto out_usage;
+
+       wimfile = argv[0];
+       image_num_or_name = argv[1];
+
+       argc -= 2;
+       argv += 2;
+
+       cmds = prepare_extract_commands(argv, argc, extract_flags, dest_dir,
+                                       &num_cmds);
+       if (!cmds) {
+               ret = -1;
+               goto out;
+       }
+
+       ret = wimlib_open_wim(wimfile, open_flags, &wim, imagex_progress_func);
+       if (ret)
+               goto out_free_cmds;
+
+       image = wimlib_resolve_image(wim, image_num_or_name);
+       ret = verify_image_exists_and_is_single(image,
+                                               image_num_or_name,
+                                               wimfile);
+       if (ret)
+               goto out_wimlib_free;
+
+       if (swm_glob) {
+               ret = open_swms_from_glob(swm_glob, wimfile, open_flags,
+                                         &additional_swms,
+                                         &num_additional_swms);
+               if (ret)
+                       goto out_wimlib_free;
+       }
+
+#ifdef __WIN32__
+       win32_acquire_restore_privileges();
+#endif
+
+       ret = wimlib_extract_files(wim, image, cmds, num_cmds, 0,
+                                  additional_swms, num_additional_swms,
+                                  imagex_progress_func);
+       if (ret == 0) {
+               if (!imagex_be_quiet)
+                       tprintf(T("Done extracting files.\n"));
+       } else if (ret == WIMLIB_ERR_PATH_DOES_NOT_EXIST) {
+               tfprintf(stderr, T("Note: You can use `"IMAGEX_PROGNAME" dir' to see what "
+                                  "files and directories\n"
+                                  "      are in the WIM image.\n"));
+       }
+#ifdef __WIN32__
+       win32_release_restore_privileges();
+#endif
+       if (additional_swms) {
+               for (unsigned i = 0; i < num_additional_swms; i++)
+                       wimlib_free(additional_swms[i]);
+               free(additional_swms);
+       }
+out_wimlib_free:
+       wimlib_free(wim);
+out_free_cmds:
+       free_extract_commands(cmds, num_cmds, dest_dir);
+out:
+       return ret;
+out_usage:
+       usage(EXTRACT);
+       ret = -1;
+       goto out;
+}
+
 /* Prints information about a WIM file; also can mark an image as bootable,
  * change the name of an image, or change the description of an image. */
 static int
@@ -2055,7 +2556,7 @@ imagex_info(int argc, tchar **argv)
 
                        ret = file_writable(wimfile);
                        if (ret != 0)
-                               return ret;
+                               goto out;
 
                        if (check)
                                write_flags = WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
@@ -2254,6 +2755,7 @@ imagex_optimize(int argc, tchar **argv)
        const tchar *wimfile;
        off_t old_size;
        off_t new_size;
+       unsigned num_threads = 0;
 
        for_opt(c, optimize_options) {
                switch (c) {
@@ -2264,6 +2766,11 @@ imagex_optimize(int argc, tchar **argv)
                case IMAGEX_RECOMPRESS_OPTION:
                        write_flags |= WIMLIB_WRITE_FLAG_RECOMPRESS;
                        break;
+               case IMAGEX_THREADS_OPTION:
+                       num_threads = parse_num_threads(optarg);
+                       if (num_threads == UINT_MAX)
+                               return -1;
+                       break;
                default:
                        usage(OPTIMIZE);
                        return -1;
@@ -2279,9 +2786,13 @@ imagex_optimize(int argc, tchar **argv)
 
        wimfile = argv[0];
 
+       ret = file_writable(wimfile);
+       if (ret)
+               return ret;
+
        ret = wimlib_open_wim(wimfile, open_flags, &w,
                              imagex_progress_func);
-       if (ret != 0)
+       if (ret)
                return ret;
 
        old_size = file_get_size(argv[0]);
@@ -2291,7 +2802,8 @@ imagex_optimize(int argc, tchar **argv)
        else
                tprintf(T("%"PRIu64" KiB\n"), old_size >> 10);
 
-       ret = wimlib_overwrite(w, write_flags, 0, imagex_progress_func);
+       ret = wimlib_overwrite(w, write_flags, num_threads,
+                              imagex_progress_func);
 
        if (ret == 0) {
                new_size = file_get_size(argv[0]);
@@ -2375,9 +2887,12 @@ imagex_unmount(int argc, tchar **argv)
                case IMAGEX_CHECK_OPTION:
                        unmount_flags |= WIMLIB_UNMOUNT_FLAG_CHECK_INTEGRITY;
                        break;
-               case IMAGEX_REBULID_OPTION:
+               case IMAGEX_REBUILD_OPTION:
                        unmount_flags |= WIMLIB_UNMOUNT_FLAG_REBUILD;
                        break;
+               case IMAGEX_LAZY_OPTION:
+                       unmount_flags |= WIMLIB_UNMOUNT_FLAG_LAZY;
+                       break;
                default:
                        usage(UNMOUNT);
                        return -1;
@@ -2397,6 +2912,192 @@ imagex_unmount(int argc, tchar **argv)
        return ret;
 }
 
+/*
+ * Add, delete, or rename files in a WIM image.
+ */
+static int
+imagex_update(int argc, tchar **argv)
+{
+       const tchar *wimfile;
+       const tchar *image_num_or_name;
+       int image;
+       WIMStruct *wim;
+       int ret;
+       int open_flags = 0;
+       int write_flags = 0;
+       int update_flags = 0;
+       int default_add_flags = WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE;
+       int default_delete_flags = 0;
+       unsigned num_threads = 0;
+       int c;
+       tchar *cmd_file_contents;
+       size_t cmd_file_nchars;
+       struct wimlib_update_command *cmds;
+       size_t num_cmds;
+
+       const tchar *config_file = NULL;
+       tchar *config_str;
+       struct wimlib_capture_config *config = NULL;
+
+       for_opt(c, update_options) {
+               switch (c) {
+               /* Generic or write options */
+               case IMAGEX_THREADS_OPTION:
+                       num_threads = parse_num_threads(optarg);
+                       if (num_threads == UINT_MAX) {
+                               ret = -1;
+                               goto out;
+                       }
+                       break;
+               case IMAGEX_CHECK_OPTION:
+                       open_flags |= WIMLIB_OPEN_FLAG_CHECK_INTEGRITY;
+                       write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
+                       break;
+               case IMAGEX_REBUILD_OPTION:
+                       write_flags |= WIMLIB_WRITE_FLAG_REBUILD;
+                       break;
+
+               /* Default delete options */
+               case IMAGEX_FORCE_OPTION:
+                       default_delete_flags |= WIMLIB_DELETE_FLAG_FORCE;
+                       break;
+               case IMAGEX_RECURSIVE_OPTION:
+                       default_delete_flags |= WIMLIB_DELETE_FLAG_RECURSIVE;
+                       break;
+
+               /* Global add option */
+               case IMAGEX_CONFIG_OPTION:
+                       config_file = optarg;
+                       break;
+
+               /* Default add options */
+               case IMAGEX_VERBOSE_OPTION:
+                       default_add_flags |= WIMLIB_ADD_IMAGE_FLAG_VERBOSE;
+                       break;
+               case IMAGEX_DEREFERENCE_OPTION:
+                       default_add_flags |= WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE;
+                       break;
+               case IMAGEX_UNIX_DATA_OPTION:
+                       default_add_flags |= WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA;
+                       break;
+               case IMAGEX_NO_ACLS_OPTION:
+                       default_add_flags |= WIMLIB_ADD_IMAGE_FLAG_NO_ACLS;
+                       break;
+               case IMAGEX_STRICT_ACLS_OPTION:
+                       default_add_flags |= WIMLIB_ADD_IMAGE_FLAG_STRICT_ACLS;
+                       break;
+               default:
+                       goto out_usage;
+               }
+       }
+       argv += optind;
+       argc -= optind;
+
+       if (argc < 1 || argc > 2)
+               goto out_usage;
+       wimfile = argv[0];
+
+       ret = file_writable(wimfile);
+       if (ret)
+               goto out;
+
+       ret = wimlib_open_wim(wimfile, open_flags, &wim, imagex_progress_func);
+       if (ret)
+               goto out;
+
+       if (argc == 2)
+               image_num_or_name = argv[1];
+       else
+               image_num_or_name = T("1");
+
+       image = wimlib_resolve_image(wim, image_num_or_name);
+
+       ret = verify_image_exists_and_is_single(image, image_num_or_name,
+                                               wimfile);
+       if (ret)
+               goto out_wimlib_free;
+
+       /* Parse capture configuration file if specified */
+       if (config_file) {
+               size_t config_len;
+
+               config_str = file_get_text_contents(config_file, &config_len);
+               if (!config_str) {
+                       ret = -1;
+                       goto out_wimlib_free;
+               }
+
+               config = alloca(sizeof(*config));
+               ret = parse_capture_config(&config_str, config_len, config);
+               if (ret)
+                       goto out_free_config;
+       } else {
+               config = &default_capture_config;
+       }
+
+       /* Read update commands from standard input */
+       if (isatty(STDIN_FILENO)) {
+               tputs(T("Reading update commands from standard input..."));
+               recommend_man_page(T("update"));
+       }
+       cmd_file_contents = stdin_get_text_contents(&cmd_file_nchars);
+       if (!cmd_file_contents) {
+               ret = -1;
+               goto out_free_config;
+       }
+
+       /* Parse the update commands */
+       cmds = parse_update_command_file(&cmd_file_contents, cmd_file_nchars,
+                                        &num_cmds);
+       if (!cmds) {
+               ret = -1;
+               goto out_free_cmd_file_contents;
+       }
+
+       /* Set default flags and capture config on the update commands */
+       for (size_t i = 0; i < num_cmds; i++) {
+               switch (cmds[i].op) {
+               case WIMLIB_UPDATE_OP_ADD:
+                       cmds[i].add.add_flags |= default_add_flags;
+                       cmds[i].add.config = config;
+                       break;
+               case WIMLIB_UPDATE_OP_DELETE:
+                       cmds[i].delete.delete_flags |= default_delete_flags;
+                       break;
+               default:
+                       break;
+               }
+       }
+
+       /* Execute the update commands */
+       ret = wimlib_update_image(wim, image, cmds, num_cmds, update_flags,
+                                 imagex_progress_func);
+       if (ret)
+               goto out_free_cmds;
+
+       /* Overwrite the updated WIM */
+       ret = wimlib_overwrite(wim, write_flags, num_threads,
+                              imagex_progress_func);
+out_free_cmds:
+       free(cmds);
+out_free_cmd_file_contents:
+       free(cmd_file_contents);
+out_free_config:
+       if (config != NULL && config != &default_capture_config) {
+               free(config->exclusion_pats.pats);
+               free(config->exclusion_exception_pats.pats);
+               free(config_str);
+       }
+out_wimlib_free:
+       wimlib_free(wim);
+out:
+       return ret;
+out_usage:
+       usage(UPDATE);
+       ret = -1;
+       goto out;
+}
+
 struct imagex_command {
        const tchar *name;
        int (*func)(int , tchar **);
@@ -2414,6 +3115,7 @@ static const struct imagex_command imagex_commands[] = {
        {T("delete"),  imagex_delete,            DELETE},
        {T("dir"),     imagex_dir,               DIR},
        {T("export"),  imagex_export,            EXPORT},
+       {T("extract"), imagex_extract,           EXTRACT},
        {T("info"),    imagex_info,              INFO},
        {T("join"),    imagex_join,              JOIN},
        {T("mount"),   imagex_mount_rw_or_ro,    MOUNT},
@@ -2421,10 +3123,11 @@ static const struct imagex_command imagex_commands[] = {
        {T("optimize"),imagex_optimize,          OPTIMIZE},
        {T("split"),   imagex_split,             SPLIT},
        {T("unmount"), imagex_unmount,           UNMOUNT},
+       {T("update"),  imagex_update,            UPDATE},
 };
 
 static void
-version()
+version(void)
 {
        static const tchar *s =
        T(
@@ -2480,14 +3183,14 @@ usage(int cmd_type)
        tprintf(T("Usage:\n%"TS), usage_strings[cmd_type]);
        for_imagex_command(cmd) {
                if (cmd->cmd == cmd_type) {
-                       tprintf(T("\nTry `man "IMAGEX_PROGNAME"-%"TS"' "
-                                 "for more details.\n"), cmd->name);
+                       tputc(T('\n'), stdout);
+                       recommend_man_page(cmd->name);
                }
        }
 }
 
 static void
-usage_all()
+usage_all(void)
 {
        tfputs(T("Usage:\n"), stdout);
        for (int i = 0; i < ARRAY_LEN(usage_strings); i++)
@@ -2499,9 +3202,9 @@ usage_all()
 "\n"
 "    The compression TYPE may be \"maximum\", \"fast\", or \"none\".\n"
 "\n"
-"    Try `man "IMAGEX_PROGNAME"' for more information.\n"
        );
        tfputs(extra, stdout);
+       recommend_man_page(T(""));
 }
 
 /* Entry point for wimlib's ImageX implementation.  On UNIX the command
@@ -2517,11 +3220,16 @@ main(int argc, char **argv)
 {
        const struct imagex_command *cmd;
        int ret;
+       int init_flags = 0;
 
 #ifndef __WIN32__
-       setlocale(LC_ALL, "");
-       {
-               char *codeset = nl_langinfo(CODESET);
+       if (getenv("WIMLIB_IMAGEX_USE_UTF8")) {
+               init_flags |= WIMLIB_INIT_FLAG_ASSUME_UTF8;
+       } else {
+               char *codeset;
+
+               setlocale(LC_ALL, "");
+               codeset = nl_langinfo(CODESET);
                if (!strstr(codeset, "UTF-8") &&
                    !strstr(codeset, "UTF8") &&
                    !strstr(codeset, "utf-8") &&
@@ -2529,7 +3237,10 @@ main(int argc, char **argv)
                {
                        fputs(
 "WARNING: Running "IMAGEX_PROGNAME" in a UTF-8 locale is recommended!\n"
-"         (Maybe try: `export LANG=en_US.UTF-8'?\n", stderr);
+"         Maybe try: `export LANG=en_US.UTF-8'?\n"
+"         Alternatively, set the environmental variable WIMLIB_IMAGEX_USE_UTF8\n"
+"         to any value to force wimlib to use UTF-8.\n",
+                       stderr);
 
                }
        }
@@ -2552,7 +3263,7 @@ main(int argc, char **argv)
        wimlib_set_print_errors(true);
 
        /* Do any initializations that the library needs */
-       ret = wimlib_global_init();
+       ret = wimlib_global_init(init_flags);
        if (ret)
                goto out_check_status;