/*
- * update_image.c - Update a WIM image.
+ * update_image.c - see description below
*/
/*
* Copyright (C) 2013, 2014 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 http://www.gnu.org/licenses/.
+ */
+
+/*
+ * This file contains the implementation of wimlib_update_image(), which is one
+ * of the two ways by which library users can make changes to a WIM image. (The
+ * other way is by mounting an image read-write.) wimlib_update_image() is also
+ * used in the implementation of wimlib_add_image(), since "create a WIM image
+ * from this directory tree" is equivalent to "create an empty WIM image, then
+ * update it to add this directory tree as the root".
+ *
+ * wimlib_update_image() processes a list of commands passed to it. Currently,
+ * the following types of commands are supported:
+ *
+ * - Add a directory tree from an external source (filesystem or NTFS volume).
+ * This can be used to add new files or to replace existing files.
+ * - Delete a file or directory tree.
+ * - Rename a file or directory tree.
+ *
+ * Not supported are creating links to existing files or changing metadata of
+ * existing files.
+ *
+ * wimlib_update_image() is atomic. If it cannot complete successfully, then
+ * all changes are rolled back and the WIMStruct is left unchanged. Rollback is
+ * implemented by breaking the commands into primitive operations such as "link
+ * this dentry tree here" which can be undone by doing the opposite operations
+ * in reverse order.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
+#include "wimlib/assert.h"
#include "wimlib/capture.h"
#include "wimlib/dentry.h"
#include "wimlib/encoding.h"
+#include "wimlib/endianness.h"
#include "wimlib/error.h"
#include "wimlib/lookup_table.h"
#include "wimlib/metadata.h"
return ret;
}
}
- free_dentry(branch);
+ free_dentry_tree(branch, j->lookup_table);
return 0;
} else if (add_flags & WIMLIB_ADD_FLAG_NO_REPLACE) {
/* Can't replace nondirectory file */
tchar *fs_source_path;
tchar *wim_target_path;
const tchar *config_file;
- struct add_image_params params;
+ struct capture_params params;
struct capture_config config;
capture_tree_t capture_tree = platform_default_capture_tree;
#ifdef WITH_NTFS_3G
#ifdef WITH_NTFS_3G
wim_get_current_image_metadata(wim)->ntfs_vol = ntfs_vol;
#endif
- if (add_flags & WIMLIB_ADD_FLAG_RPFIX)
- wim->hdr.flags |= WIM_HDR_FLAG_RP_FIX;
ret = 0;
goto out_destroy_config;
out_cleanup_after_capture:
goto rollback;
}
- ret = WIMLIB_ERR_INVALID_PARAM;
switch (cmds[i].op) {
case WIMLIB_UPDATE_OP_ADD:
ret = execute_add_command(j, wim, &cmds[i], inode_table,
WIMLIB_ADD_FLAG_NO_UNSUPPORTED_EXCLUDE |
WIMLIB_ADD_FLAG_WINCONFIG |
WIMLIB_ADD_FLAG_WIMBOOT |
- WIMLIB_ADD_FLAG_NO_REPLACE))
+ WIMLIB_ADD_FLAG_NO_REPLACE |
+ WIMLIB_ADD_FLAG_TEST_FILE_EXCLUSION))
return WIMLIB_ERR_INVALID_PARAM;
bool is_entire_image = WIMLIB_IS_WIM_ROOT_PATH(cmd->add.wim_target_path);
DEBUG("Updating image %d with %zu commands", image, num_cmds);
- if (have_command_type(cmds, num_cmds, WIMLIB_UPDATE_OP_DELETE))
- ret = can_delete_from_wim(wim);
- else
- ret = can_modify_wim(wim);
-
- if (ret)
- goto out;
-
/* Load the metadata for the image to modify (if not loaded already) */
ret = select_wim_image(wim, image);
if (ret)
* directories, may have changed. Call xml_update_image_info() to
* recalculate these statistics. */
xml_update_image_info(wim, image);
+
+ for (size_t i = 0; i < num_cmds; i++)
+ if (cmds_copy[i].op == WIMLIB_UPDATE_OP_ADD &&
+ cmds_copy[i].add.add_flags & WIMLIB_ADD_FLAG_RPFIX)
+ wim->hdr.flags |= WIM_HDR_FLAG_RP_FIX;
out_free_cmds_copy:
free_update_commands(cmds_copy, num_cmds);
out:
return ret;
}
-static int
-update1(WIMStruct *wim, int image, const struct wimlib_update_command *cmd)
-{
- return wimlib_update_image(wim, image, cmd, 1, 0);
-}
-
WIMLIBAPI int
wimlib_delete_path(WIMStruct *wim, int image,
const tchar *path, int delete_flags)
cmd.delete_.wim_path = (tchar *)path;
cmd.delete_.delete_flags = delete_flags;
- return update1(wim, image, &cmd);
+ return wimlib_update_image(wim, image, &cmd, 1, 0);
}
WIMLIBAPI int
cmd.rename.wim_target_path = (tchar *)dest_path;
cmd.rename.rename_flags = 0;
- return update1(wim, image, &cmd);
+ return wimlib_update_image(wim, image, &cmd, 1, 0);
}
WIMLIBAPI int
cmd.add.add_flags = add_flags;
cmd.add.config_file = NULL;
- return update1(wim, image, &cmd);
+ return wimlib_update_image(wim, image, &cmd, 1, 0);
}
git://wimlib.net / wimlib / blobdiff