4 * Join split WIMs (sometimes named as .swm files) together into one WIM.
8 * Copyright (C) 2012, 2013 Eric Biggers
10 * This file is part of wimlib, a library for working with WIM files.
12 * wimlib is free software; you can redistribute it and/or modify it under the
13 * terms of the GNU General Public License as published by the Free
14 * Software Foundation; either version 3 of the License, or (at your option)
17 * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
18 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
19 * A PARTICULAR PURPOSE. See the GNU General Public License for more
22 * You should have received a copy of the GNU General Public License
23 * along with wimlib; if not, see http://www.gnu.org/licenses/.
31 #include "wimlib/lookup_table.h"
32 #include "wimlib/metadata.h"
33 #include "wimlib/resource.h"
34 #include "wimlib/swm.h"
35 #include "wimlib/wim.h"
36 #include "wimlib/write.h"
37 #include "wimlib/xml.h"
39 #include <stdlib.h> /* for qsort() */
42 move_lte_to_table(struct wim_lookup_table_entry *lte, void *combined_table)
44 hlist_del(<e->hash_list);
45 lookup_table_insert((struct wim_lookup_table*)combined_table, lte);
50 lookup_table_join(struct wim_lookup_table *combined_table,
51 struct wim_lookup_table *part_table)
53 for_lookup_table_entry(part_table, move_lte_to_table, combined_table);
54 part_table->num_entries = 0;
58 * merge_lookup_tables() - Merge lookup tables from the parts of a split WIM.
60 * @w specifies the first part, while @additional_swms and @num_additional_swms
61 * specify an array of pointers to the WIMStruct's for additional split WIM parts.
63 * The reason we join the lookup tables is so we only have to search one lookup
64 * table to find the location of a resource in the entire WIM.
67 merge_lookup_tables(WIMStruct *w,
68 WIMStruct **additional_swms,
69 unsigned num_additional_swms)
71 for (unsigned i = 0; i < num_additional_swms; i++)
72 lookup_table_join(w->lookup_table, additional_swms[i]->lookup_table);
76 move_lte_to_orig_table(struct wim_lookup_table_entry *lte, void *_wim)
78 WIMStruct *wim = _wim;
79 if (lte->wim != wim) {
80 move_lte_to_table(lte, lte->wim->lookup_table);
81 wim->lookup_table->num_entries--;
86 /* Undo merge_lookup_tables(), given the first WIM part that contains the merged
89 unmerge_lookup_table(WIMStruct *wim)
91 for_lookup_table_entry(wim->lookup_table, move_lte_to_orig_table, wim);
96 join_wims(WIMStruct **swms, unsigned num_swms,
97 WIMStruct *joined_wim, int write_flags,
98 wimlib_progress_func_t progress_func)
102 union wimlib_progress_info progress;
105 u64 swm_part_sizes[num_swms];
107 /* Calculate total size of the streams in the split WIM parts. */
108 for (i = 0; i < num_swms; i++) {
109 part_bytes = lookup_table_total_stream_size(swms[i]->lookup_table);
110 swm_part_sizes[i] = part_bytes;
111 total_bytes += part_bytes;
115 progress.join.total_bytes = total_bytes;
116 progress.join.total_parts = swms[0]->hdr.total_parts;
117 progress.join.completed_bytes = 0;
118 progress.join.completed_parts = 0;
119 progress_func(WIMLIB_PROGRESS_MSG_JOIN_STREAMS, &progress);
122 /* Write the non-metadata resources from each SWM part */
123 for (i = 0; i < num_swms; i++) {
124 ret = reopen_wim(swms[i]);
127 swms[i]->out_fd = joined_wim->out_fd;
128 swms[i]->hdr.part_number = 1;
130 ret = for_lookup_table_entry_pos_sorted(swms[i]->lookup_table,
133 swms[i]->out_fd = -1;
141 progress.join.completed_bytes += swm_part_sizes[i];
142 progress.join.completed_parts++;
143 progress_func(WIMLIB_PROGRESS_MSG_JOIN_STREAMS, &progress);
147 /* Copy the metadata resources from the first SWM part */
148 joined_wim->hdr.image_count = swms[0]->hdr.image_count;
149 for (i = 0; i < joined_wim->hdr.image_count; i++) {
150 ret = copy_resource(swms[0]->image_metadata[i]->metadata_lte,
156 /* Write lookup table, XML data, and optional integrity table */
157 for (i = 0; i < num_swms; i++)
158 lookup_table_join(joined_wim->lookup_table, swms[i]->lookup_table);
160 free_wim_info(joined_wim->wim_info);
161 joined_wim->wim_info = swms[0]->wim_info;
162 joined_wim->image_metadata = swms[0]->image_metadata;
163 ret = finish_write(joined_wim, WIMLIB_ALL_IMAGES, write_flags, progress_func);
164 joined_wim->wim_info = NULL;
165 joined_wim->image_metadata = NULL;
170 cmp_swms_by_part_number(const void *swm1, const void *swm2)
172 u16 partno_1 = (*(const WIMStruct**)swm1)->hdr.part_number;
173 u16 partno_2 = (*(const WIMStruct**)swm2)->hdr.part_number;
174 return (int)partno_1 - (int)partno_2;
178 * Join a set of split WIMs into a stand-alone WIM.
181 wimlib_join(const tchar * const *swm_names,
183 const tchar *output_path,
186 wimlib_progress_func_t progress_func)
189 WIMStruct *joined_wim = NULL;
192 swm_open_flags |= WIMLIB_OPEN_FLAG_SPLIT_OK;
193 wim_write_flags &= WIMLIB_WRITE_MASK_PUBLIC;
195 if (num_swms < 1 || num_swms > 0xffff)
196 return WIMLIB_ERR_INVALID_PARAM;
198 WIMStruct *swms[num_swms];
201 for (i = 0; i < num_swms; i++) {
202 ret = wimlib_open_wim(swm_names[i], swm_open_flags, &swms[i],
207 /* Don't open all the parts at the same time, in case there are
212 qsort(swms, num_swms, sizeof(swms[0]), cmp_swms_by_part_number);
214 ret = verify_swm_set(swms[0], &swms[1], num_swms - 1);
218 ret = wimlib_create_new_wim(wimlib_get_compression_type(swms[0]),
223 ret = begin_write(joined_wim, output_path, wim_write_flags);
226 ret = join_wims(swms, num_swms, joined_wim, wim_write_flags,
229 for (i = 0; i < num_swms; i++)
230 wimlib_free(swms[i]);
231 wimlib_free(joined_wim);