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/.
26 #include "wimlib_internal.h"
27 #include "lookup_table.h"
32 move_lte_to_table(struct wim_lookup_table_entry *lte, void *combined_table)
34 hlist_del(<e->hash_list);
35 lookup_table_insert((struct wim_lookup_table*)combined_table, lte);
40 lookup_table_join(struct wim_lookup_table *combined_table,
41 struct wim_lookup_table *part_table)
43 for_lookup_table_entry(part_table, move_lte_to_table, combined_table);
44 part_table->num_entries = 0;
48 * merge_lookup_tables() - Merge lookup tables from the parts of a split WIM.
50 * @w specifies the first part, while @additional_swms and @num_additional_swms
51 * specify an array of pointers to the WIMStruct's for additional split WIM parts.
53 * The reason we join the lookup tables is so we only have to search one lookup
54 * table to find the location of a resource in the entire WIM.
57 merge_lookup_tables(WIMStruct *w,
58 WIMStruct **additional_swms,
59 unsigned num_additional_swms)
61 for (unsigned i = 0; i < num_additional_swms; i++)
62 lookup_table_join(w->lookup_table, additional_swms[i]->lookup_table);
66 move_lte_to_orig_table(struct wim_lookup_table_entry *lte, void *_wim)
68 WIMStruct *wim = _wim;
69 if (lte->wim != wim) {
70 move_lte_to_table(lte, lte->wim->lookup_table);
71 wim->lookup_table->num_entries--;
76 /* Undo merge_lookup_tables(), given the first WIM part that contains the merged
79 unmerge_lookup_table(WIMStruct *wim)
81 for_lookup_table_entry(wim->lookup_table, move_lte_to_orig_table, wim);
86 join_wims(WIMStruct **swms, unsigned num_swms,
87 WIMStruct *joined_wim, int write_flags,
88 wimlib_progress_func_t progress_func)
92 union wimlib_progress_info progress;
95 u64 swm_part_sizes[num_swms];
97 /* Calculate total size of the streams in the split WIM parts. */
98 for (i = 0; i < num_swms; i++) {
99 part_bytes = lookup_table_total_stream_size(swms[i]->lookup_table);
100 swm_part_sizes[i] = part_bytes;
101 total_bytes += part_bytes;
105 progress.join.total_bytes = total_bytes;
106 progress.join.total_parts = swms[0]->hdr.total_parts;
107 progress.join.completed_bytes = 0;
108 progress.join.completed_parts = 0;
109 progress_func(WIMLIB_PROGRESS_MSG_JOIN_STREAMS, &progress);
112 /* Write the non-metadata resources from each SWM part */
113 for (i = 0; i < num_swms; i++) {
114 ret = reopen_wim(swms[i]);
117 swms[i]->out_fd = joined_wim->out_fd;
118 swms[i]->hdr.part_number = 1;
120 ret = for_lookup_table_entry_pos_sorted(swms[i]->lookup_table,
123 swms[i]->out_fd = -1;
131 progress.join.completed_bytes += swm_part_sizes[i];
132 progress.join.completed_parts++;
133 progress_func(WIMLIB_PROGRESS_MSG_JOIN_STREAMS, &progress);
137 /* Copy the metadata resources from the first SWM part */
138 joined_wim->hdr.image_count = swms[0]->hdr.image_count;
139 for (i = 0; i < joined_wim->hdr.image_count; i++) {
140 ret = copy_resource(swms[0]->image_metadata[i]->metadata_lte,
146 /* Write lookup table, XML data, and optional integrity table */
147 for (i = 0; i < num_swms; i++)
148 lookup_table_join(joined_wim->lookup_table, swms[i]->lookup_table);
150 free_wim_info(joined_wim->wim_info);
151 joined_wim->wim_info = swms[0]->wim_info;
152 joined_wim->image_metadata = swms[0]->image_metadata;
153 ret = finish_write(joined_wim, WIMLIB_ALL_IMAGES, write_flags, progress_func);
154 joined_wim->wim_info = NULL;
155 joined_wim->image_metadata = NULL;
160 cmp_swms_by_part_number(const void *swm1, const void *swm2)
162 u16 partno_1 = (*(const WIMStruct**)swm1)->hdr.part_number;
163 u16 partno_2 = (*(const WIMStruct**)swm2)->hdr.part_number;
164 return (int)partno_1 - (int)partno_2;
168 * Join a set of split WIMs into a stand-alone WIM.
171 wimlib_join(const tchar * const *swm_names,
173 const tchar *output_path,
176 wimlib_progress_func_t progress_func)
179 WIMStruct *joined_wim = NULL;
182 swm_open_flags |= WIMLIB_OPEN_FLAG_SPLIT_OK;
183 wim_write_flags &= WIMLIB_WRITE_MASK_PUBLIC;
185 if (num_swms < 1 || num_swms > 0xffff)
186 return WIMLIB_ERR_INVALID_PARAM;
188 WIMStruct *swms[num_swms];
191 for (i = 0; i < num_swms; i++) {
192 ret = wimlib_open_wim(swm_names[i], swm_open_flags, &swms[i],
197 /* Don't open all the parts at the same time, in case there are
202 qsort(swms, num_swms, sizeof(swms[0]), cmp_swms_by_part_number);
204 ret = verify_swm_set(swms[0], &swms[1], num_swms - 1);
208 ret = wimlib_create_new_wim(wimlib_get_compression_type(swms[0]),
213 ret = begin_write(joined_wim, output_path, wim_write_flags);
216 ret = join_wims(swms, num_swms, joined_wim, wim_write_flags,
219 for (i = 0; i < num_swms; i++)
220 wimlib_free(swms[i]);
221 wimlib_free(joined_wim);