wimlib.net Git - wimlib/blob - src/add_image.c

   1 /*
   2  * add_image.c - Add an image to a WIM file.
   3  */
   4
   5 /*
   6  * Copyright (C) 2012, 2013 Eric Biggers
   7  *
   8  * This file is part of wimlib, a library for working with WIM files.
   9  *
  10  * wimlib is free software; you can redistribute it and/or modify it under the
  11  * terms of the GNU General Public License as published by the Free
  12  * Software Foundation; either version 3 of the License, or (at your option)
  13  * any later version.
  14  *
  15  * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
  16  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  17  * A PARTICULAR PURPOSE. See the GNU General Public License for more
  18  * details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with wimlib; if not, see http://www.gnu.org/licenses/.
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #  include "config.h"
  26 #endif
  27
  28 #include "wimlib.h"
  29 #include "wimlib/capture.h"
  30 #include "wimlib/error.h"
  31 #include "wimlib/lookup_table.h"
  32 #include "wimlib/metadata.h"
  33 #include "wimlib/xml.h"
  34
  35 /*
  36  * Adds the dentry tree and security data for a new image to the image metadata
  37  * array of the WIMStruct.
  38  */
  39 static int
  40 add_new_dentry_tree(WIMStruct *wim, struct wim_dentry *root_dentry,
  41                     struct wim_security_data *sd)
  42 {
  43         struct wim_image_metadata *new_imd;
  44         struct wim_lookup_table_entry *metadata_lte;
  45         int ret;
  46
  47         metadata_lte = new_lookup_table_entry();
  48         if (!metadata_lte)
  49                 return WIMLIB_ERR_NOMEM;
  50
  51         metadata_lte->resource_entry.flags = WIM_RESHDR_FLAG_METADATA;
  52         metadata_lte->unhashed = 1;
  53
  54         new_imd = new_image_metadata();
  55         if (!new_imd) {
  56                 free_lookup_table_entry(metadata_lte);
  57                 return WIMLIB_ERR_NOMEM;
  58         }
  59
  60         new_imd->root_dentry    = root_dentry;
  61         new_imd->metadata_lte   = metadata_lte;
  62         new_imd->security_data  = sd;
  63         new_imd->modified       = 1;
  64
  65         ret = append_image_metadata(wim, new_imd);
  66         if (ret)
  67                 put_image_metadata(new_imd, NULL);
  68         return ret;
  69 }
  70
  71 /* Append an empty image to the WIMStruct. */
  72 WIMLIBAPI int
  73 wimlib_add_empty_image(WIMStruct *wim, const tchar *name, int *new_idx_ret)
  74 {
  75         int ret;
  76         struct wim_security_data *sd;
  77
  78         DEBUG("Adding empty image \"%"TS"\"", name);
  79
  80         if (name == NULL)
  81                 name = T("");
  82
  83         if (wim->hdr.total_parts != 1) {
  84                 ERROR("Cannot add an image to a split WIM");
  85                 ret = WIMLIB_ERR_SPLIT_UNSUPPORTED;
  86                 goto out;
  87         }
  88
  89         if (wimlib_image_name_in_use(wim, name)) {
  90                 ERROR("There is already an image named \"%"TS"\" in the WIM!",
  91                       name);
  92                 ret = WIMLIB_ERR_IMAGE_NAME_COLLISION;
  93                 goto out;
  94         }
  95
  96         sd = new_wim_security_data();
  97         if (!sd) {
  98                 ret = WIMLIB_ERR_NOMEM;
  99                 goto out;
 100         }
 101
 102         ret = add_new_dentry_tree(wim, NULL, sd);
 103         if (ret)
 104                 goto out_free_security_data;
 105
 106         ret = xml_add_image(wim, name);
 107         if (ret)
 108                 goto out_put_image_metadata;
 109
 110         if (new_idx_ret)
 111                 *new_idx_ret = wim->hdr.image_count;
 112         DEBUG("Successfully added new image (index %d)",
 113               wim->hdr.image_count);
 114         goto out;
 115 out_put_image_metadata:
 116         put_image_metadata(wim->image_metadata[--wim->hdr.image_count],
 117                            wim->lookup_table);
 118         goto out;
 119 out_free_security_data:
 120         free_wim_security_data(sd);
 121 out:
 122         return ret;
 123 }
 124
 125 static struct wimlib_update_command *
 126 capture_sources_to_add_cmds(const struct wimlib_capture_source *sources,
 127                             size_t num_sources,
 128                             int add_flags,
 129                             const struct wimlib_capture_config *config)
 130 {
 131         struct wimlib_update_command *add_cmds;
 132
 133         DEBUG("Translating %zu capture sources to `struct wimlib_update_command's",
 134               num_sources);
 135         add_cmds = CALLOC(num_sources, sizeof(add_cmds[0]));
 136         if (add_cmds) {
 137                 for (size_t i = 0; i < num_sources; i++) {
 138                         DEBUG("Source %zu of %zu: fs_source_path=\"%"TS"\", "
 139                               "wim_target_path=\"%"TS"\"",
 140                               i + 1, num_sources,
 141                               sources[i].fs_source_path,
 142                               sources[i].wim_target_path);
 143                         add_cmds[i].op = WIMLIB_UPDATE_OP_ADD;
 144                         add_cmds[i].add.add_flags = add_flags;
 145                         add_cmds[i].add.config = (struct wimlib_capture_config*)config;
 146                         add_cmds[i].add.fs_source_path = sources[i].fs_source_path;
 147                         add_cmds[i].add.wim_target_path = sources[i].wim_target_path;
 148                 }
 149         }
 150         return add_cmds;
 151 }
 152
 153 /* Adds an image to the WIMStruct from multiple on-disk directory trees, or a
 154  * NTFS volume. */
 155 WIMLIBAPI int
 156 wimlib_add_image_multisource(WIMStruct *wim,
 157                              const struct wimlib_capture_source *sources,
 158                              size_t num_sources,
 159                              const tchar *name,
 160                              const struct wimlib_capture_config *config,
 161                              int add_flags,
 162                              wimlib_progress_func_t progress_func)
 163 {
 164         int ret;
 165         struct wimlib_update_command *add_cmds;
 166
 167         DEBUG("Adding image \"%"TS"\" from %zu sources (add_flags=%#x)",
 168               name, num_sources, add_flags);
 169
 170         /* Add the new image (initially empty) */
 171         ret = wimlib_add_empty_image(wim, name, NULL);
 172         if (ret)
 173                 goto out;
 174
 175         /* Translate the "capture sources" into generic update commands. */
 176         add_cmds = capture_sources_to_add_cmds(sources, num_sources,
 177                                                add_flags, config);
 178         if (!add_cmds) {
 179                 ret = WIMLIB_ERR_NOMEM;
 180                 goto out_delete_image;
 181         }
 182
 183         /* Delegate the work to wimlib_update_image(). */
 184         ret = wimlib_update_image(wim, wim->hdr.image_count, add_cmds,
 185                                   num_sources, 0, progress_func);
 186         FREE(add_cmds);
 187         if (ret)
 188                 goto out_delete_image;
 189
 190         /* Success; set boot index if requested. */
 191         if (add_flags & WIMLIB_ADD_FLAG_BOOT)
 192                 wim->hdr.boot_idx = wim->hdr.image_count;
 193         ret = 0;
 194         goto out;
 195 out_delete_image:
 196         /* Roll back the image we added */
 197         put_image_metadata(wim->image_metadata[wim->hdr.image_count - 1],
 198                            wim->lookup_table);
 199         xml_delete_image(&wim->wim_info, wim->hdr.image_count);
 200         wim->hdr.image_count--;
 201 out:
 202         return ret;
 203 }
 204
 205 /* Adds an image to the WIMStruct from an on-disk directory tree or NTFS volume. */
 206 WIMLIBAPI int
 207 wimlib_add_image(WIMStruct *wim,
 208                  const tchar *source,
 209                  const tchar *name,
 210                  const struct wimlib_capture_config *config,
 211                  int add_flags,
 212                  wimlib_progress_func_t progress_func)
 213 {
 214         /* Delegate the work to the more general wimlib_add_image_multisource().
 215          * */
 216         const struct wimlib_capture_source capture_src = {
 217                 .fs_source_path = (tchar*)source,
 218                 .wim_target_path = T(""),
 219                 .reserved = 0,
 220         };
 221         return wimlib_add_image_multisource(wim, &capture_src, 1, name,
 222                                             config, add_flags,
 223                                             progress_func);
 224 }