+int verify_swm_set(WIMStruct *w, WIMStruct **additional_swms,
+ unsigned num_additional_swms)
+{
+ unsigned total_parts = w->hdr.total_parts;
+ int ctype;
+ const u8 *guid;
+
+ if (total_parts != num_additional_swms + 1) {
+ ERROR("`%s' says there are %u parts in the spanned set, "
+ "but %s%u part%s provided",
+ w->filename, w->hdr.total_parts,
+ (num_additional_swms + 1 < w->hdr.total_parts) ? "only " : "",
+ num_additional_swms + 1,
+ (num_additional_swms) ? "s were" : " was");
+ return WIMLIB_ERR_SPLIT_INVALID;
+ }
+ if (w->hdr.part_number != 1) {
+ ERROR("WIM `%s' is not the first part of the split WIM.",
+ w->filename);
+ return WIMLIB_ERR_SPLIT_INVALID;
+ }
+ for (unsigned i = 0; i < num_additional_swms; i++) {
+ if (additional_swms[i]->hdr.total_parts != total_parts) {
+ ERROR("WIM `%s' says there are %u parts in the spanned set, "
+ "but %u parts were provided",
+ additional_swms[i]->filename,
+ additional_swms[i]->hdr.total_parts,
+ total_parts);
+ return WIMLIB_ERR_SPLIT_INVALID;
+ }
+ }
+
+ /* keep track of ctype and guid just to make sure they are the same for
+ * all the WIMs. */
+ ctype = wimlib_get_compression_type(w);
+ guid = w->hdr.guid;
+
+ WIMStruct *parts_to_swms[num_additional_swms];
+ ZERO_ARRAY(parts_to_swms);
+ for (unsigned i = 0; i < num_additional_swms; i++) {
+
+ WIMStruct *swm = additional_swms[i];
+
+ if (wimlib_get_compression_type(swm) != ctype) {
+ ERROR("The split WIMs do not all have the same "
+ "compression type");
+ return WIMLIB_ERR_SPLIT_INVALID;
+ }
+ if (memcmp(guid, swm->hdr.guid, WIM_GID_LEN) != 0) {
+ ERROR("The split WIMs do not all have the same "
+ "GUID");
+ return WIMLIB_ERR_SPLIT_INVALID;
+ }
+ if (swm->hdr.part_number == 1) {
+ ERROR("WIMs `%s' and `%s' both are marked as the "
+ "first WIM in the spanned set",
+ w->filename, swm->filename);
+ return WIMLIB_ERR_SPLIT_INVALID;
+ }
+ if (swm->hdr.part_number == 0 ||
+ swm->hdr.part_number > total_parts)
+ {
+ ERROR("WIM `%s' says it is part %u in the spanned set, "
+ "but the part number must be in the range "
+ "[1, %u]",
+ swm->filename, swm->hdr.part_number, total_parts);
+ return WIMLIB_ERR_SPLIT_INVALID;
+ }
+ if (parts_to_swms[swm->hdr.part_number - 2])
+ {
+ ERROR("`%s' and `%s' are both marked as part %u of %u "
+ "in the spanned set",
+ parts_to_swms[swm->hdr.part_number - 2]->filename,
+ swm->filename,
+ swm->hdr.part_number,
+ total_parts);
+ return WIMLIB_ERR_SPLIT_INVALID;
+ } else {
+ parts_to_swms[swm->hdr.part_number - 2] = swm;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Joins lookup tables from the parts of a split WIM.
+ *
+ * @w specifies the first part, while @additional_swms and @num_additional_swms
+ * specify an array of points to the WIMStruct's for additional split WIM parts.
+ *
+ * On success, 0 is returned on a pointer to the joined lookup table is returned
+ * in @table_ret.
+ *
+ * The reason we join the lookup tables is so:
+ * - We only have to search one lookup table to find the location of a
+ * resource in the entire split WIM.
+ * - Each lookup table entry will have a pointer to its split WIM part (and
+ * a part number field, although we don't really use it).
+ */
+int new_joined_lookup_table(WIMStruct *w,
+ WIMStruct **additional_swms,
+ unsigned num_additional_swms,
+ struct lookup_table **table_ret)
+{
+ struct lookup_table *table;
+ int ret;
+ unsigned i;