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+/******************************************************
+Percona XtraBackup: hot backup tool for InnoDB
+(c) 2009-2014 Percona LLC and/or its affiliates
+Originally Created 3/3/2009 Yasufumi Kinoshita
+Written by Alexey Kopytov, Aleksandr Kuzminsky, Stewart Smith, Vadim Tkachenko,
+Yasufumi Kinoshita, Ignacio Nin and Baron Schwartz.
+
+This program 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; version 2 of the License.
+
+This program 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 details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
+
+*******************************************************
+
+This file incorporates work covered by the following copyright and
+permission notice:
+
+ Copyright 2010 Codership Oy <http://www.codership.com>
+
+ This program 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; version 2 of the License.
+
+ This program 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 details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
+
+*******************************************************/
+
+#include <my_global.h>
+#include <my_base.h>
+#include <handler.h>
+#include <trx0rseg.h>
+#include <mysql/service_wsrep.h>
+
+#include "common.h"
+#ifdef WITH_WSREP
+
+#include <wsrep_api.h>
+
+/*! Name of file where Galera info is stored on recovery */
+#define XB_GALERA_INFO_FILENAME "xtrabackup_galera_info"
+
+/***********************************************************************
+Store Galera checkpoint info in the 'xtrabackup_galera_info' file, if that
+information is present in the trx system header. Otherwise, do nothing. */
+void
+xb_write_galera_info(bool incremental_prepare)
+/*==================*/
+{
+ FILE* fp;
+ XID xid;
+ char uuid_str[40];
+ long long seqno;
+ MY_STAT statinfo;
+
+ /* Do not overwrite existing an existing file to be compatible with
+ servers with older server versions */
+ if (!incremental_prepare &&
+ my_stat(XB_GALERA_INFO_FILENAME, &statinfo, MYF(0)) != NULL) {
+
+ return;
+ }
+
+ xid.null();
+
+ if (!trx_rseg_read_wsrep_checkpoint(xid)) {
+
+ return;
+ }
+
+ wsrep_uuid_t uuid;
+ memcpy(uuid.data, wsrep_xid_uuid(&xid), sizeof(uuid.data));
+ if (wsrep_uuid_print(&uuid, uuid_str,
+ sizeof(uuid_str)) < 0) {
+ return;
+ }
+
+ fp = fopen(XB_GALERA_INFO_FILENAME, "w");
+ if (fp == NULL) {
+
+ die(
+ "could not create " XB_GALERA_INFO_FILENAME
+ ", errno = %d\n",
+ errno);
+ exit(EXIT_FAILURE);
+ }
+
+ seqno = wsrep_xid_seqno(&xid);
+
+ msg("mariabackup: Recovered WSREP position: %s:%lld\n",
+ uuid_str, (long long) seqno);
+
+ if (fprintf(fp, "%s:%lld", uuid_str, (long long) seqno) < 0) {
+
+ die(
+ "could not write to " XB_GALERA_INFO_FILENAME
+ ", errno = %d\n",
+ errno);;
+ }
+
+ fclose(fp);
+}
+#endif