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"
31 static int move_lte_to_table(struct wim_lookup_table_entry *lte,
34 hlist_del(<e->hash_list);
35 lookup_table_insert((struct wim_lookup_table*)other_tab, lte);
39 static int lookup_table_join(struct wim_lookup_table *table,
40 struct wim_lookup_table *new)
42 return for_lookup_table_entry(new, move_lte_to_table, table);
46 * new_joined_lookup_table: - Join lookup tables from the parts of a split WIM.
48 * @w specifies the first part, while @additional_swms and @num_additional_swms
49 * specify an array of pointers to the WIMStruct's for additional split WIM parts.
51 * The lookup table entries are *moved* to the new table.
53 * On success, 0 is returned on a pointer to the joined lookup table is returned
56 * The reason we join the lookup tables is so we only have to search one lookup
57 * table to find the location of a resource in the entire WIM.
59 int new_joined_lookup_table(WIMStruct *w,
60 WIMStruct **additional_swms,
61 unsigned num_additional_swms,
62 struct wim_lookup_table **table_ret)
64 struct wim_lookup_table *table;
68 table = new_lookup_table(9001);
70 return WIMLIB_ERR_NOMEM;
73 lookup_table_join(table, w->lookup_table);
75 for (i = 0; i < num_additional_swms; i++) {
76 ret = lookup_table_join(table, additional_swms[i]->lookup_table);
83 free_lookup_table(table);
88 static int join_wims(WIMStruct **swms, unsigned num_swms,
89 WIMStruct *joined_wim, int write_flags,
90 wimlib_progress_func_t progress_func)
94 union wimlib_progress_info progress;
97 u64 swm_part_sizes[num_swms];
99 /* Calculate total size of the streams in the split WIM parts. */
100 for (i = 0; i < num_swms; i++) {
101 part_bytes = lookup_table_total_stream_size(swms[i]->lookup_table);
102 swm_part_sizes[i] = part_bytes;
103 total_bytes += part_bytes;
107 progress.join.total_bytes = total_bytes;
108 progress.join.total_parts = swms[0]->hdr.total_parts;
109 progress.join.completed_bytes = 0;
110 progress.join.completed_parts = 0;
111 progress_func(WIMLIB_PROGRESS_MSG_JOIN_STREAMS, &progress);
114 /* Write the resources (streams and metadata resources) from each SWM
116 swms[0]->write_metadata = true;
117 for (i = 0; i < num_swms; i++) {
118 swms[i]->fp = fopen(swms[i]->filename, "rb");
120 ERROR_WITH_ERRNO("Failed to reopen `%s'",
122 return WIMLIB_ERR_OPEN;
124 swms[i]->out_fp = joined_wim->out_fp;
125 swms[i]->hdr.part_number = 1;
126 ret = for_lookup_table_entry(swms[i]->lookup_table,
127 copy_resource, swms[i]);
128 swms[i]->out_fp = NULL;
136 progress.join.completed_bytes += swm_part_sizes[i];
137 progress.join.completed_parts++;
138 progress_func(WIMLIB_PROGRESS_MSG_JOIN_STREAMS, &progress);
142 joined_wim->hdr.image_count = swms[0]->hdr.image_count;
143 for (i = 0; i < num_swms; i++)
144 lookup_table_join(joined_wim->lookup_table, swms[i]->lookup_table);
146 free_wim_info(joined_wim->wim_info);
147 joined_wim->wim_info = swms[0]->wim_info;
148 ret = finish_write(joined_wim, WIMLIB_ALL_IMAGES, write_flags, progress_func);
149 joined_wim->wim_info = NULL;
153 static int cmp_swms_by_part_number(const void *swm1, const void *swm2)
155 u16 partno_1 = (*(const WIMStruct**)swm1)->hdr.part_number;
156 u16 partno_2 = (*(const WIMStruct**)swm2)->hdr.part_number;
157 return (int)partno_1 - (int)partno_2;
161 * Join a set of split WIMs into a stand-alone WIM.
163 WIMLIBAPI int wimlib_join(const char **swm_names, unsigned num_swms,
164 const char *output_path, int swm_open_flags,
166 wimlib_progress_func_t progress_func)
169 WIMStruct *joined_wim = NULL;
172 swm_open_flags |= WIMLIB_OPEN_FLAG_SPLIT_OK;
173 wim_write_flags &= WIMLIB_WRITE_MASK_PUBLIC;
175 if (num_swms < 1 || num_swms > 0xffff)
176 return WIMLIB_ERR_INVALID_PARAM;
178 WIMStruct *swms[num_swms];
181 for (i = 0; i < num_swms; i++) {
182 ret = wimlib_open_wim(swm_names[i], swm_open_flags, &swms[i],
187 /* Don't open all the parts at the same time, in case there are
193 qsort(swms, num_swms, sizeof(swms[0]), cmp_swms_by_part_number);
195 ret = verify_swm_set(swms[0], &swms[1], num_swms - 1);
199 ret = wimlib_create_new_wim(wimlib_get_compression_type(swms[0]),
204 ret = begin_write(joined_wim, output_path, wim_write_flags);
207 ret = join_wims(swms, num_swms, joined_wim, wim_write_flags,
210 for (i = 0; i < num_swms; i++)
211 wimlib_free(swms[i]);
212 wimlib_free(joined_wim);