]> wimlib.net Git - wimlib/blobdiff - src/join.c
mount_image.c: add fallback definitions of RENAME_* constants
[wimlib] / src / join.c
index 5cda7739a1f57d2f5a0820b837b01c65a3c5f439..00fd292b7117f4dafe974fe7aacf09e328fbc12b 100644 (file)
  */
 
 /*
- * Copyright (C) 2012, 2013 Eric Biggers
+ * Copyright (C) 2012-2016 Eric Biggers
  *
- * This file is part of wimlib, a library for working with WIM files.
+ * This file is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option) any
+ * later version.
  *
- * wimlib is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 3 of the License, or (at your option)
- * any later version.
- *
- * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- * A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * This file is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
  * details.
  *
- * You should have received a copy of the GNU General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see https://www.gnu.org/licenses/.
  */
 
 #ifdef HAVE_CONFIG_H
 #  include "config.h"
 #endif
 
+#include <stdlib.h>
+
 #include "wimlib.h"
+#include "wimlib/error.h"
 #include "wimlib/types.h"
 #include "wimlib/util.h"
 #include "wimlib/wim.h"
 
-/* API function documented in wimlib.h  */
+/*
+ * Verify that a list of WIM files sorted by part number is a spanned set.
+ *
+ * Return: 0 on success; WIMLIB_ERR_SPLIT_INVALID if the set is not valid.
+ */
+static int
+verify_swm_set(WIMStruct * const *swms, unsigned num_swms)
+{
+       for (unsigned i = 0; i < num_swms; i++) {
+               if (!guids_equal(swms[i]->hdr.guid, swms[0]->hdr.guid)) {
+                       ERROR("The split WIM parts specified belong to "
+                             "different split WIMs!");
+                       return WIMLIB_ERR_SPLIT_INVALID;
+               }
+               if (swms[i]->hdr.total_parts != num_swms) {
+                       ERROR("\"%"TS"\" says there are %u parts in the split "
+                             "WIM, but %s%u part%s provided",
+                             swms[i]->filename, swms[i]->hdr.total_parts,
+                             num_swms < swms[i]->hdr.total_parts ? "only ":"",
+                             num_swms, num_swms > 1 ? "s were" : " was");
+                       return WIMLIB_ERR_SPLIT_INVALID;
+               }
+               if (swms[i]->hdr.part_number != i + 1) {
+                       ERROR("The parts of the split WIM are not numbered "
+                             "1..%u as expected.  Did you specify duplicate "
+                             "parts?", num_swms);
+                       return WIMLIB_ERR_SPLIT_INVALID;
+               }
+       }
+       return 0;
+}
+
+static int
+cmp_swms_by_part_number(const void *p1, const void *p2)
+{
+       WIMStruct *swm1 = *(WIMStruct **)p1;
+       WIMStruct *swm2 = *(WIMStruct **)p2;
+
+       return (int)swm1->hdr.part_number - (int)swm2->hdr.part_number;
+}
+
 WIMLIBAPI int
-wimlib_join(const tchar * const *swm_names,
-           unsigned num_swms,
-           const tchar *output_path,
-           int swm_open_flags,
-           int wim_write_flags,
-           wimlib_progress_func_t progress_func)
+wimlib_join_with_progress(const tchar * const *swm_names,
+                         unsigned num_swms,
+                         const tchar *output_path,
+                         int swm_open_flags,
+                         int wim_write_flags,
+                         wimlib_progress_func_t progfunc,
+                         void *progctx)
 {
-       int ret;
-       unsigned i;
-       unsigned j;
-       WIMStruct *swm0;
        WIMStruct **swms;
-       unsigned num_additional_swms;
-       WIMStruct *wim;
-
-       swm_open_flags |= WIMLIB_OPEN_FLAG_SPLIT_OK;
+       unsigned i;
+       int ret;
 
        if (num_swms < 1 || num_swms > 0xffff)
                return WIMLIB_ERR_INVALID_PARAM;
-       num_additional_swms = num_swms - 1;
 
-       swms = CALLOC(num_additional_swms, sizeof(swms[0]));
+       swms = CALLOC(num_swms, sizeof(swms[0]));
        if (!swms)
                return WIMLIB_ERR_NOMEM;
 
-       swm0 = NULL;
-       for (i = 0, j = 0; i < num_swms; i++) {
-               WIMStruct *swm;
-
-               ret = wimlib_open_wim(swm_names[i], swm_open_flags, &swm,
-                                     progress_func);
+       for (i = 0; i < num_swms; i++) {
+               ret = wimlib_open_wim_with_progress(swm_names[i],
+                                                   swm_open_flags,
+                                                   &swms[i],
+                                                   progfunc,
+                                                   progctx);
                if (ret)
-                       goto out_free_swms;
-               if (swm->hdr.part_number == 1 && swm0 == NULL)
-                       swm0 = swm;
-               else
-                       swms[j++] = swm;
+                       goto out;
        }
 
-       if (!swm0) {
-               ret = WIMLIB_ERR_SPLIT_INVALID;
-               goto out_free_swms;
-       }
+       qsort(swms, num_swms, sizeof(swms[0]), cmp_swms_by_part_number);
 
-       ret = wimlib_create_new_wim(swm0->compression_type, &wim);
+       ret = verify_swm_set(swms, num_swms);
        if (ret)
-               goto out_free_swms;
+               goto out;
 
-       ret = wimlib_export_image(swm0, WIMLIB_ALL_IMAGES,
-                                 wim, NULL, NULL, 0,
-                                 swms, num_additional_swms,
-                                 progress_func);
+       ret = wimlib_reference_resources(swms[0], swms + 1, num_swms - 1, 0);
        if (ret)
-               goto out_free_wim;
-
-       wim->hdr.flags |= swm0->hdr.flags & (WIM_HDR_FLAG_RP_FIX |
-                                            WIM_HDR_FLAG_READONLY);
-       if (!(wim_write_flags & (WIMLIB_WRITE_FLAG_CHECK_INTEGRITY |
-                                WIMLIB_WRITE_FLAG_NO_CHECK_INTEGRITY)))
-       {
-               if (wim_has_integrity_table(swm0))
-                       wim_write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
-       }
-       if (!(wim_write_flags & (WIMLIB_WRITE_FLAG_PIPABLE |
-                                WIMLIB_WRITE_FLAG_NOT_PIPABLE)))
-       {
-               if (wim_is_pipable(swm0))
-                       wim_write_flags |= WIMLIB_WRITE_FLAG_PIPABLE;
-       }
-
+               goto out;
 
-       ret = wimlib_write(wim, output_path, WIMLIB_ALL_IMAGES,
-                          wim_write_flags, 1, progress_func);
-out_free_wim:
-       wimlib_free(wim);
-out_free_swms:
-       for (i = 0; i < num_additional_swms; i++)
+       /* It is reasonably safe to provide WIMLIB_WRITE_FLAG_STREAMS_OK, as we
+        * have verified that the specified split WIM parts form a spanned set.
+        */
+       ret = wimlib_write(swms[0], output_path, WIMLIB_ALL_IMAGES,
+                          wim_write_flags |
+                               WIMLIB_WRITE_FLAG_STREAMS_OK |
+                               WIMLIB_WRITE_FLAG_RETAIN_GUID,
+                          1);
+out:
+       for (i = 0; i < num_swms; i++)
                wimlib_free(swms[i]);
        FREE(swms);
-       wimlib_free(swm0);
        return ret;
 }
+
+/* API function documented in wimlib.h  */
+WIMLIBAPI int
+wimlib_join(const tchar * const *swm_names,
+           unsigned num_swms,
+           const tchar *output_path,
+           int swm_open_flags,
+           int wim_write_flags)
+{
+       return wimlib_join_with_progress(swm_names, num_swms, output_path,
+                                        swm_open_flags, wim_write_flags,
+                                        NULL, NULL);
+}