/* API function documented in wimlib.h */
WIMLIBAPI int
wimlib_get_wim_info(WIMStruct *wim, struct wimlib_wim_info *info)
{
memset(info, 0, sizeof(struct wimlib_wim_info));
copy_guid(info->guid, wim->hdr.guid);
info->image_count = wim->hdr.image_count;
info->boot_index = wim->hdr.boot_idx;
info->wim_version = wim->hdr.wim_version;
info->chunk_size = wim->chunk_size;
info->part_number = wim->hdr.part_number;
info->total_parts = wim->hdr.total_parts;
info->compression_type = wim->compression_type;
info->total_bytes = wim_info_get_total_bytes(wim->wim_info);
info->has_integrity_table = wim_has_integrity_table(wim);
info->opened_from_file = (wim->filename != NULL);
info->is_readonly = (wim->hdr.flags & WIM_HDR_FLAG_READONLY) ||
(wim->hdr.total_parts != 1) ||
(wim->filename && taccess(wim->filename, W_OK));
info->has_rpfix = (wim->hdr.flags & WIM_HDR_FLAG_RP_FIX) != 0;
info->is_marked_readonly = (wim->hdr.flags & WIM_HDR_FLAG_READONLY) != 0;
info->write_in_progress = (wim->hdr.flags & WIM_HDR_FLAG_WRITE_IN_PROGRESS) != 0;
info->metadata_only = (wim->hdr.flags & WIM_HDR_FLAG_METADATA_ONLY) != 0;
info->resource_only = (wim->hdr.flags & WIM_HDR_FLAG_RESOURCE_ONLY) != 0;
info->spanned = (wim->hdr.flags & WIM_HDR_FLAG_SPANNED) != 0;
info->pipable = wim_is_pipable(wim);
return 0;
}
/*
* check_wim_integrity():
*
* Verifies the integrity of the WIM by making sure the SHA1 message digests of
* ~10 MiB chunks of the WIM match up with the values given in the integrity
* table.
*
* @wim:
* The WIM, opened for reading.
*
* Returns:
* > 0 (WIMLIB_ERR_INVALID_INTEGRITY_TABLE, WIMLIB_ERR_READ,
* WIMLIB_ERR_UNEXPECTED_END_OF_FILE) on error
* 0 (WIM_INTEGRITY_OK) if the integrity was checked successfully and there
* were no inconsistencies.
* -1 (WIM_INTEGRITY_NOT_OK) if the WIM failed the integrity check.
* -2 (WIM_INTEGRITY_NONEXISTENT) if the WIM contains no integrity
* information.
*/
int
check_wim_integrity(WIMStruct *wim)
{
int ret;
u64 bytes_to_check;
struct integrity_table *table;
u64 end_lookup_table_offset;
if (!wim_has_integrity_table(wim)) {
DEBUG("No integrity information.");
return WIM_INTEGRITY_NONEXISTENT;
}
end_lookup_table_offset = wim->hdr.lookup_table_reshdr.offset_in_wim +
wim->hdr.lookup_table_reshdr.size_in_wim;
if (end_lookup_table_offset < WIM_HEADER_DISK_SIZE) {
ERROR("WIM lookup table ends before WIM header ends!");
return WIMLIB_ERR_INVALID_INTEGRITY_TABLE;
}
bytes_to_check = end_lookup_table_offset - WIM_HEADER_DISK_SIZE;
ret = read_integrity_table(wim, bytes_to_check, &table);
if (ret)
return ret;
ret = verify_integrity(&wim->in_fd, wim->filename, table,
bytes_to_check, wim->progfunc, wim->progctx);
FREE(table);
return ret;
}
