+ /* Write out a checksums file which lists the checksums for all the
+ * segments included in this snapshot. The format is designed so that it
+ * may be easily verified using the sha1sums command. */
+ const char csum_type[] = "sha1";
+ string checksum_filename = "snapshot-";
+ if (backup_scheme.size() > 0)
+ checksum_filename += backup_scheme + "-";
+ checksum_filename = checksum_filename + desc_buf + "." + csum_type + "sums";
+ RemoteFile *checksum_file = remote->alloc_file(checksum_filename,
+ "checksums");
+ FILE *checksums = fdopen(checksum_file->get_fd(), "w");
+
+ for (std::set<string>::iterator i = segment_list.begin();
+ i != segment_list.end(); ++i) {
+ string seg_path, seg_csum;
+ if (db->GetSegmentChecksum(*i, &seg_path, &seg_csum)) {
+ const char *raw_checksum = NULL;
+ if (strncmp(seg_csum.c_str(), csum_type,
+ strlen(csum_type)) == 0) {
+ raw_checksum = seg_csum.c_str() + strlen(csum_type);
+ if (*raw_checksum == '=')
+ raw_checksum++;
+ else
+ raw_checksum = NULL;
+ }
+
+ if (raw_checksum != NULL)
+ fprintf(checksums, "%s *%s\n",
+ raw_checksum, seg_path.c_str());
+ }
+ }
+ fclose(checksums);
+
+ SHA1Checksum checksum_csum;
+ string csum;
+ checksum_filename = checksum_file->get_local_path();
+ if (checksum_csum.process_file(checksum_filename.c_str())) {
+ csum = checksum_csum.checksum_str();
+ }
+
+ checksum_file->send();
+
+ db->Close();
+
+ /* All other files should be flushed to remote storage before writing the
+ * backup descriptor below, so that it is not possible to have a backup
+ * descriptor written out depending on non-existent (not yet written)
+ * files. */
+ remote->sync();
+