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 #include "wimlib_internal.h"
  25 #include "lookup_table.h"
  26 #include "xml.h"
  27
  28 /*
  29  * Adds the dentry tree and security data for a new image to the image metadata
  30  * array of the WIMStruct.
  31  */
  32 static int
  33 add_new_dentry_tree(WIMStruct *wim, struct wim_dentry *root_dentry,
  34                     struct wim_security_data *sd)
  35 {
  36         struct wim_image_metadata *new_imd;
  37         struct wim_lookup_table_entry *metadata_lte;
  38         int ret;
  39
  40         metadata_lte = new_lookup_table_entry();
  41         if (!metadata_lte)
  42                 return WIMLIB_ERR_NOMEM;
  43
  44         metadata_lte->resource_entry.flags = WIM_RESHDR_FLAG_METADATA;
  45         metadata_lte->unhashed = 1;
  46
  47         new_imd = new_image_metadata();
  48         if (!new_imd) {
  49                 free_lookup_table_entry(metadata_lte);
  50                 return WIMLIB_ERR_NOMEM;
  51         }
  52
  53         new_imd->root_dentry    = root_dentry;
  54         new_imd->metadata_lte   = metadata_lte;
  55         new_imd->security_data  = sd;
  56         new_imd->modified       = 1;
  57
  58         ret = append_image_metadata(wim, new_imd);
  59         if (ret)
  60                 put_image_metadata(new_imd, NULL);
  61         return ret;
  62 }
  63
  64 /* Append an empty image to the WIMStruct. */
  65 WIMLIBAPI int
  66 wimlib_add_empty_image(WIMStruct *wim, const tchar *name, int *new_idx_ret)
  67 {
  68         int ret;
  69         struct wim_security_data *sd;
  70
  71         DEBUG("Adding empty image \"%"TS"\"", name);
  72
  73         if (name == NULL || name[0] == T('\0')) {
  74                 ERROR("Must specify a non-empty string for the image name");
  75                 ret = WIMLIB_ERR_INVALID_PARAM;
  76                 goto out;
  77         }
  78
  79         if (wim->hdr.total_parts != 1) {
  80                 ERROR("Cannot add an image to a split WIM");
  81                 ret = WIMLIB_ERR_SPLIT_UNSUPPORTED;
  82                 goto out;
  83         }
  84
  85         if (wimlib_image_name_in_use(wim, name)) {
  86                 ERROR("There is already an image named \"%"TS"\" in the WIM!",
  87                       name);
  88                 ret = WIMLIB_ERR_IMAGE_NAME_COLLISION;
  89                 goto out;
  90         }
  91
  92         sd = new_wim_security_data();
  93         if (!sd) {
  94                 ret = WIMLIB_ERR_NOMEM;
  95                 goto out;
  96         }
  97
  98         ret = add_new_dentry_tree(wim, NULL, sd);
  99         if (ret)
 100                 goto out_free_security_data;
 101
 102         ret = xml_add_image(wim, name);
 103         if (ret)
 104                 goto out_put_image_metadata;
 105
 106         if (new_idx_ret)
 107                 *new_idx_ret = wim->hdr.image_count;
 108         DEBUG("Successfully added new image (index %d)",
 109               wim->hdr.image_count);
 110         goto out;
 111 out_put_image_metadata:
 112         put_image_metadata(wim->image_metadata[--wim->hdr.image_count],
 113                            wim->lookup_table);
 114         goto out;
 115 out_free_security_data:
 116         free_security_data(sd);
 117 out:
 118         return ret;
 119 }
 120
 121 static struct wimlib_update_command *
 122 capture_sources_to_add_cmds(const struct wimlib_capture_source *sources,
 123                             size_t num_sources,
 124                             int add_flags,
 125                             const struct wimlib_capture_config *config)
 126 {
 127         struct wimlib_update_command *add_cmds;
 128
 129         DEBUG("Translating %zu capture sources to `struct wimlib_update_command's",
 130               num_sources);
 131         add_cmds = CALLOC(num_sources, sizeof(add_cmds[0]));
 132         if (add_cmds) {
 133                 for (size_t i = 0; i < num_sources; i++) {
 134                         DEBUG("Source %zu of %zu: fs_source_path=\"%"TS"\", "
 135                               "wim_target_path=\"%"TS"\"",
 136                               i + 1, num_sources,
 137                               sources[i].fs_source_path,
 138                               sources[i].wim_target_path);
 139                         add_cmds[i].op = WIMLIB_UPDATE_OP_ADD;
 140                         add_cmds[i].add.add_flags = add_flags;
 141                         add_cmds[i].add.config = (struct wimlib_capture_config*)config;
 142                         add_cmds[i].add.fs_source_path = sources[i].fs_source_path;
 143                         add_cmds[i].add.wim_target_path = sources[i].wim_target_path;
 144                 }
 145         }
 146         return add_cmds;
 147 }
 148
 149 /* Adds an image to the WIMStruct from multiple on-disk directory trees, or a
 150  * NTFS volume. */
 151 WIMLIBAPI int
 152 wimlib_add_image_multisource(WIMStruct *wim,
 153                              const struct wimlib_capture_source *sources,
 154                              size_t num_sources,
 155                              const tchar *name,
 156                              const struct wimlib_capture_config *config,
 157                              int add_flags,
 158                              wimlib_progress_func_t progress_func)
 159 {
 160         int ret;
 161         struct wimlib_update_command *add_cmds;
 162
 163         DEBUG("Adding image \"%"TS"\" from %zu sources (add_flags=%#x)",
 164               name, num_sources, add_flags);
 165
 166         /* Add the new image (initially empty) */
 167         ret = wimlib_add_empty_image(wim, name, NULL);
 168         if (ret)
 169                 goto out;
 170
 171         /* Translate the "capture sources" into generic update commands. */
 172         add_cmds = capture_sources_to_add_cmds(sources, num_sources,
 173                                                add_flags, config);
 174         if (!add_cmds) {
 175                 ret = WIMLIB_ERR_NOMEM;
 176                 goto out_delete_image;
 177         }
 178
 179         /* Delegate the work to wimlib_update_image(). */
 180         ret = wimlib_update_image(wim, wim->hdr.image_count, add_cmds,
 181                                   num_sources, 0, progress_func);
 182         FREE(add_cmds);
 183         if (ret)
 184                 goto out_delete_image;
 185
 186         /* Success; set boot index if requested. */
 187         if (add_flags & WIMLIB_ADD_FLAG_BOOT)
 188                 wim->hdr.boot_idx = wim->hdr.image_count;
 189         ret = 0;
 190         goto out;
 191 out_delete_image:
 192         /* Roll back the image we added */
 193         put_image_metadata(wim->image_metadata[wim->hdr.image_count - 1],
 194                            wim->lookup_table);
 195         xml_delete_image(&wim->wim_info, wim->hdr.image_count);
 196         wim->hdr.image_count--;
 197 out:
 198         return ret;
 199 }
 200
 201 /* Adds an image to the WIMStruct from an on-disk directory tree or NTFS volume. */
 202 WIMLIBAPI int
 203 wimlib_add_image(WIMStruct *wim,
 204                  const tchar *source,
 205                  const tchar *name,
 206                  const struct wimlib_capture_config *config,
 207                  int add_flags,
 208                  wimlib_progress_func_t progress_func)
 209 {
 210         /* Delegate the work to the more general wimlib_add_image_multisource().
 211          * */
 212         const struct wimlib_capture_source capture_src = {
 213                 .fs_source_path = (tchar*)source,
 214                 .wim_target_path = T(""),
 215                 .reserved = 0,
 216         };
 217         return wimlib_add_image_multisource(wim, &capture_src, 1, name,
 218                                             config, add_flags,
 219                                             progress_func);
 220 }