*/
/*
- * Copyright (C) 2012, 2013 Eric Biggers
+ * Copyright (C) 2012, 2013, 2014, 2015 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/.
*/
#ifdef HAVE_CONFIG_H
#endif
#include "wimlib.h"
-#include "wimlib/dentry.h"
+#include "wimlib/blob_table.h"
#include "wimlib/error.h"
#include "wimlib/inode.h"
-#include "wimlib/lookup_table.h"
#include "wimlib/metadata.h"
#include "wimlib/xml.h"
-#include <stdlib.h>
static int
-inode_export_streams(struct wim_inode *inode,
- const struct wim_lookup_table *src_lookup_table,
- struct wim_lookup_table *dest_lookup_table)
+blob_set_not_exported(struct blob_descriptor *blob, void *_ignore)
+{
+ blob->out_refcnt = 0;
+ blob->was_exported = 0;
+ return 0;
+}
+
+static int
+blob_rollback_export(struct blob_descriptor *blob, void *_blob_table)
+{
+ struct blob_table *blob_table = _blob_table;
+
+ blob->refcnt -= blob->out_refcnt;
+ if (blob->was_exported) {
+ blob_table_unlink(blob_table, blob);
+ free_blob_descriptor(blob);
+ }
+ return 0;
+}
+
+static int
+inode_export_blobs(struct wim_inode *inode, struct blob_table *src_blob_table,
+ struct blob_table *dest_blob_table, bool gift)
{
unsigned i;
const u8 *hash;
- struct wim_lookup_table_entry *src_lte, *dest_lte;
+ struct blob_descriptor *src_blob, *dest_blob;
- inode_unresolve_streams(inode);
- for (i = 0; i <= inode->i_num_ads; i++) {
+ for (i = 0; i < inode->i_num_streams; i++) {
- /* Retrieve SHA1 message digest of stream to export. */
- hash = inode_stream_hash(inode, i);
+ /* Retrieve SHA-1 message digest of blob to export. */
+ hash = stream_hash(&inode->i_streams[i]);
if (is_zero_hash(hash)) /* Empty stream? */
continue;
- /* Search for the stream (via SHA1 message digest) in the
+ /* Search for the blob (via SHA-1 message digest) in the
* destination WIM. */
- dest_lte = lookup_stream(dest_lookup_table, hash);
- if (!dest_lte) {
- /* Stream not yet present in destination WIM. Search
- * for it in the source WIM, then export it into the
+ dest_blob = lookup_blob(dest_blob_table, hash);
+ if (!dest_blob) {
+ /* Blob not yet present in destination WIM. Search for
+ * it in the source WIM, then export it into the
* destination WIM. */
- src_lte = lookup_stream(src_lookup_table, hash);
- if (!src_lte)
- return stream_not_found_error(inode, hash);
-
- dest_lte = clone_lookup_table_entry(src_lte);
- if (!dest_lte)
- return WIMLIB_ERR_NOMEM;
- dest_lte->refcnt = 0;
- dest_lte->out_refcnt = 0;
- lookup_table_insert(dest_lookup_table, dest_lte);
+ src_blob = stream_blob(&inode->i_streams[i],
+ src_blob_table);
+ if (!src_blob)
+ return blob_not_found_error(inode, hash);
+
+ if (gift) {
+ dest_blob = src_blob;
+ blob_table_unlink(src_blob_table, src_blob);
+ } else {
+ dest_blob = clone_blob_descriptor(src_blob);
+ if (!dest_blob)
+ return WIMLIB_ERR_NOMEM;
+ }
+ dest_blob->refcnt = 0;
+ dest_blob->out_refcnt = 0;
+ dest_blob->was_exported = 1;
+ blob_table_insert(dest_blob_table, dest_blob);
}
- /* Stream is present in destination WIM (either pre-existing,
+ /* Blob is present in destination WIM (either pre-existing,
* already exported, or just exported above). Increment its
* reference count appropriately. Note: we use 'refcnt' for
* the raw reference count, but 'out_refcnt' for references
* arising just from the export operation; this is used to roll
* back a failed export if needed. */
- dest_lte->refcnt += inode->i_nlink;
- dest_lte->out_refcnt += inode->i_nlink;
- }
- return 0;
-}
-
-static int
-lte_unexport(struct wim_lookup_table_entry *lte, void *_lookup_table)
-{
- struct wim_lookup_table *lookup_table = _lookup_table;
-
- lte->refcnt -= lte->out_refcnt;
- if (lte->refcnt == 0) {
- lookup_table_unlink(lookup_table, lte);
- free_lookup_table_entry(lte);
+ dest_blob->refcnt += inode->i_nlink;
+ dest_blob->out_refcnt += inode->i_nlink;
}
return 0;
}
WIMStruct *dest_wim,
const tchar *dest_name,
const tchar *dest_description,
- int export_flags,
- wimlib_progress_func_t progress_func)
+ int export_flags)
{
int ret;
- int start_image;
- int end_image;
+ int start_src_image;
+ int end_src_image;
+ int orig_dest_image_count;
int image;
- u32 orig_dest_boot_idx;
- u32 orig_dest_image_count;
+ bool all_images = (src_image == WIMLIB_ALL_IMAGES);
/* Check for sane parameters. */
if (export_flags & ~(WIMLIB_EXPORT_FLAG_BOOT |
WIMLIB_EXPORT_FLAG_NO_NAMES |
- WIMLIB_EXPORT_FLAG_NO_DESCRIPTIONS))
+ WIMLIB_EXPORT_FLAG_NO_DESCRIPTIONS |
+ WIMLIB_EXPORT_FLAG_GIFT |
+ WIMLIB_EXPORT_FLAG_WIMBOOT))
return WIMLIB_ERR_INVALID_PARAM;
- if (src_wim == NULL || dest_wim == NULL)
+ if (!src_wim || !dest_wim)
return WIMLIB_ERR_INVALID_PARAM;
- if (!wim_has_metadata(dest_wim))
+ if (!wim_has_metadata(src_wim) || !wim_has_metadata(dest_wim))
return WIMLIB_ERR_METADATA_NOT_FOUND;
- /* Destination WIM must be writable. */
- ret = can_modify_wim(dest_wim);
- if (ret)
- return ret;
-
- if (src_image == WIMLIB_ALL_IMAGES) {
+ if (all_images) {
/* Multi-image export. */
if ((!(export_flags & WIMLIB_EXPORT_FLAG_NO_NAMES) &&
dest_name) ||
(!(export_flags & WIMLIB_EXPORT_FLAG_NO_DESCRIPTIONS) &&
dest_description))
{
- ERROR("Image name or image description was "
- "specified, but we are exporting "
- "multiple images");
+ ERROR("Image name and description must be "
+ "left NULL for multi-image export");
return WIMLIB_ERR_INVALID_PARAM;
}
- start_image = 1;
- end_image = src_wim->hdr.image_count;
+ start_src_image = 1;
+ end_src_image = src_wim->hdr.image_count;
} else {
- start_image = src_image;
- end_image = src_image;
+ start_src_image = src_image;
+ end_src_image = src_image;
}
+ orig_dest_image_count = dest_wim->hdr.image_count;
- /* Stream checksums must be known before proceeding. */
- ret = wim_checksum_unhashed_streams(src_wim);
+ /* We don't yet support having a single WIMStruct contain duplicate
+ * 'image_metadata' structures, so we must forbid this from happening.
+ * A duplication is possible if 'src_wim == dest_wim', if the same image
+ * is exported to the same destination WIMStruct multiple times, or if
+ * an image is exported in an A => B => A manner. */
+ for (src_image = start_src_image;
+ src_image <= end_src_image; src_image++)
+ {
+ const struct wim_image_metadata *src_imd =
+ src_wim->image_metadata[src_image - 1];
+ for (int i = 0; i < dest_wim->hdr.image_count; i++)
+ if (dest_wim->image_metadata[i] == src_imd)
+ return WIMLIB_ERR_DUPLICATE_EXPORTED_IMAGE;
+ }
+
+ /* Blob checksums must be known before proceeding. */
+ ret = wim_checksum_unhashed_blobs(src_wim);
if (ret)
return ret;
- ret = wim_checksum_unhashed_streams(dest_wim);
+ ret = wim_checksum_unhashed_blobs(dest_wim);
if (ret)
return ret;
- /* Zero 'out_refcnt' in all lookup table entries in the destination WIM;
- * this tracks the number of references found from the source WIM
- * image(s). */
- for_lookup_table_entry(dest_wim->lookup_table, lte_zero_out_refcnt,
- NULL);
-
- /* Save the original count of images in the destination WIM and the boot
- * index (used if rollback necessary). */
- orig_dest_image_count = dest_wim->hdr.image_count;
- orig_dest_boot_idx = dest_wim->hdr.boot_idx;
+ /* Enable rollbacks */
+ for_blob_in_table(dest_wim->blob_table, blob_set_not_exported, NULL);
/* Export each requested image. */
- for (image = start_image; image <= end_image; image++) {
+ for (src_image = start_src_image;
+ src_image <= end_src_image;
+ src_image++)
+ {
const tchar *next_dest_name, *next_dest_description;
struct wim_image_metadata *src_imd;
struct wim_inode *inode;
- DEBUG("Exporting image %d from \"%"TS"\"",
- image, src_wim->filename);
-
/* Determine destination image name and description. */
- if (export_flags & WIMLIB_EXPORT_FLAG_NO_NAMES) {
+ if (export_flags & WIMLIB_EXPORT_FLAG_NO_NAMES)
next_dest_name = NULL;
- } else if (dest_name) {
+ else if (dest_name)
next_dest_name = dest_name;
- } else {
- next_dest_name = wimlib_get_image_name(src_wim,
- image);
- }
-
- DEBUG("Using name \"%"TS"\"", next_dest_name);
+ else
+ next_dest_name = wimlib_get_image_name(src_wim, src_image);
- if (export_flags & WIMLIB_EXPORT_FLAG_NO_DESCRIPTIONS) {
+ if (export_flags & WIMLIB_EXPORT_FLAG_NO_DESCRIPTIONS)
next_dest_description = NULL;
- } if (dest_description) {
+ else if (dest_description)
next_dest_description = dest_description;
- } else {
- next_dest_description = wimlib_get_image_description(
- src_wim, image);
- }
-
- DEBUG("Using description \"%"TS"\"", next_dest_description);
+ else
+ next_dest_description = wimlib_get_image_description(src_wim, src_image);
/* Check for name conflict. */
if (wimlib_image_name_in_use(dest_wim, next_dest_name)) {
}
/* Load metadata for source image into memory. */
- ret = select_wim_image(src_wim, image);
+ ret = select_wim_image(src_wim, src_image);
if (ret)
goto out_rollback;
src_imd = wim_get_current_image_metadata(src_wim);
/* Iterate through inodes in the source image and export their
- * streams into the destination WIM. */
+ * blobs into the destination WIM. */
image_for_each_inode(inode, src_imd) {
- ret = inode_export_streams(inode,
- src_wim->lookup_table,
- dest_wim->lookup_table);
+ ret = inode_export_blobs(inode,
+ src_wim->blob_table,
+ dest_wim->blob_table,
+ export_flags & WIMLIB_EXPORT_FLAG_GIFT);
if (ret)
goto out_rollback;
}
/* Export XML information into the destination WIM. */
- ret = xml_export_image(src_wim->wim_info, image,
- &dest_wim->wim_info, next_dest_name,
- next_dest_description);
+ ret = xml_export_image(src_wim->xml_info, src_image,
+ dest_wim->xml_info, next_dest_name,
+ next_dest_description,
+ export_flags & WIMLIB_EXPORT_FLAG_WIMBOOT);
if (ret)
goto out_rollback;
if (ret)
goto out_rollback;
src_imd->refcnt++;
+ }
- /* Lock the metadata into memory. XXX: need better solution for
- * this. */
- src_imd->modified = 1;
-
- /* Set boot index in destination WIM. */
- if ((export_flags & WIMLIB_EXPORT_FLAG_BOOT) &&
- (src_image != WIMLIB_ALL_IMAGES ||
- image == src_wim->hdr.boot_idx))
- {
- DEBUG("Marking destination image %u as bootable.",
- dest_wim->hdr.image_count);
- dest_wim->hdr.boot_idx = dest_wim->hdr.image_count;
- }
+ /* Image export complete. Finish by setting any needed special metadata
+ * on the destination WIM. */
- }
- /* Set the reparse point fixup flag on the destination WIM if the flag
- * is set on the source WIM. */
if (src_wim->hdr.flags & WIM_HDR_FLAG_RP_FIX)
dest_wim->hdr.flags |= WIM_HDR_FLAG_RP_FIX;
- DEBUG("Export operation successful.");
+
+ for (src_image = start_src_image;
+ src_image <= end_src_image;
+ src_image++)
+ {
+ int dst_image = orig_dest_image_count + 1 +
+ (src_image - start_src_image);
+
+ if ((export_flags & WIMLIB_EXPORT_FLAG_BOOT) &&
+ (!all_images || src_image == src_wim->hdr.boot_idx))
+ dest_wim->hdr.boot_idx = dst_image;
+ }
+
return 0;
out_rollback:
- while ((image = wim_info_get_num_images(dest_wim->wim_info))
+ while ((image = xml_get_image_count(dest_wim->xml_info))
> orig_dest_image_count)
{
- xml_delete_image(&dest_wim->wim_info, image);
+ xml_delete_image(dest_wim->xml_info, image);
}
while (dest_wim->hdr.image_count > orig_dest_image_count)
{
put_image_metadata(dest_wim->image_metadata[
--dest_wim->hdr.image_count], NULL);
}
- for_lookup_table_entry(dest_wim->lookup_table, lte_unexport,
- dest_wim->lookup_table);
- dest_wim->hdr.boot_idx = orig_dest_boot_idx;
+ for_blob_in_table(dest_wim->blob_table, blob_rollback_export,
+ dest_wim->blob_table);
return ret;
}
git://wimlib.net / wimlib / blobdiff