--- scripts/wsrep_sst_mariabackup.sh.orig	2018-07-13 11:54:07.684349000 +0200
+++ scripts/wsrep_sst_mariabackup.sh	2018-07-13 16:36:00.941511000 +0200
@@ -1,4 +1,4 @@
-#!/usr/local/bin/bash -ue
+#!/bin/sh -ue
 # Copyright (C) 2013 Percona Inc
 # Copyright (C) 2017 MariaDB
 #
@@ -101,7 +101,7 @@ timeit(){
     local cmd="$@"
     local x1 x2 took extcode
 
-    if [[ $ttime -eq 1 ]];then 
+    if [ $ttime -eq 1 ];then 
         x1=$(date +%s)
         wsrep_log_info "Evaluating $cmd"
         eval "$cmd"
@@ -121,18 +121,18 @@ timeit(){
 get_keys()
 {
     # $encrypt -eq 1 is for internal purposes only
-    if [[ $encrypt -ge 2 || $encrypt -eq -1 ]];then 
+    if [ $encrypt -ge 2 -o $encrypt -eq -1 ];then 
         return 
     fi
 
-    if [[ $encrypt -eq 0 ]];then 
+    if [ $encrypt -eq 0 ];then 
         if $MY_PRINT_DEFAULTS xtrabackup | grep -q encrypt;then
             wsrep_log_error "Unexpected option combination. SST may fail. Refer to http://www.percona.com/doc/percona-xtradb-cluster/manual/xtrabackup_sst.html "
         fi
         return
     fi
 
-    if [[ $sfmt == 'tar' ]];then
+    if [ "$sfmt" = 'tar' ];then
         wsrep_log_info "NOTE: Xtrabackup-based encryption - encrypt=1 - cannot be enabled with tar format"
         encrypt=-1
         return
@@ -140,23 +140,23 @@ get_keys()
 
     wsrep_log_info "Xtrabackup based encryption enabled in my.cnf - Supported only from Xtrabackup 2.1.4"
 
-    if [[ -z $ealgo ]];then
+    if [ -z "$ealgo" ];then
         wsrep_log_error "FATAL: Encryption algorithm empty from my.cnf, bailing out"
         exit 3
     fi
 
-    if [[ -z $ekey && ! -r $ekeyfile ]];then
+    if [ -z "$ekey" -a ! -r "$ekeyfile" ];then
         wsrep_log_error "FATAL: Either key or keyfile must be readable"
         exit 3
     fi
 
-    if [[ -z $ekey ]];then
+    if [ -z "$ekey" ];then
         ecmd="${XBCRYPT_BIN} --encrypt-algo=$ealgo --encrypt-key-file=$ekeyfile"
     else
         ecmd="${XBCRYPT_BIN} --encrypt-algo=$ealgo --encrypt-key=$ekey"
     fi
 
-    if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]];then
+    if [ "$WSREP_SST_OPT_ROLE" = "joiner" ];then
         ecmd+=" -d"
     fi
 
@@ -165,16 +165,16 @@ get_keys()
 
 get_transfer()
 {
-    if [[ -z $SST_PORT ]];then 
+    if [ -z "$SST_PORT" ];then 
         TSST_PORT=4444
     else 
         TSST_PORT=$SST_PORT
     fi
 
-    if [[ $tfmt == 'nc' ]];then
+    if [ "$tfmt" = 'nc' ];then
         wsrep_check_programs nc
         wsrep_log_info "Using netcat as streamer"
-        if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
+        if [ "$WSREP_SST_OPT_ROLE"  = "joiner" ];then
             if nc -h 2>&1 | grep -q ncat;then 
                 # Ncat
                 tcmd="nc -l ${TSST_PORT}"
@@ -202,34 +202,34 @@ get_transfer()
         wsrep_check_programs socat
         wsrep_log_info "Using socat as streamer"
 
-        if [[ $encrypt -eq 2 || $encrypt -eq 3 ]] && ! socat -V | grep -q "WITH_OPENSSL 1";then
+        if [ $encrypt -eq 2 -o $encrypt -eq 3 ] && ! socat -V | grep -q "WITH_OPENSSL 1";then
             wsrep_log_error "Encryption requested, but socat is not OpenSSL enabled (encrypt=$encrypt)"
             exit 2
         fi
 
-        if [[ $encrypt -eq 2 ]];then 
+        if [ $encrypt -eq 2 ];then 
             wsrep_log_info "Using openssl based encryption with socat: with crt and pem"
-            if [[ -z $tpem || -z $tcert ]];then 
+            if [ -z "$tpem" -o -z "$tcert" ];then 
                 wsrep_log_error "Both PEM and CRT files required"
                 exit 22
             fi
             stagemsg+="-OpenSSL-Encrypted-2"
-            if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
+            if [ "$WSREP_SST_OPT_ROLE" = "joiner" ];then
                 wsrep_log_info "Decrypting with cert=${tpem}, cafile=${tcert}"
                 tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tpem},cafile=${tcert}${sockopt} stdio"
             else
                 wsrep_log_info "Encrypting with cert=${tpem}, cafile=${tcert}"
                 tcmd="socat -u stdio openssl-connect:${REMOTEHOST}:${TSST_PORT},cert=${tpem},cafile=${tcert}${sockopt}"
             fi
-        elif [[ $encrypt -eq 3 ]];then
+        elif [ $encrypt -eq 3 ];then
             wsrep_log_info "Using openssl based encryption with socat: with key and crt"
-            if [[ -z $tpem || -z $tkey ]];then
+            if [ -z $tpem || -z $tkey ];then
                 wsrep_log_error "Both certificate and key files required"
                 exit 22
             fi
             stagemsg+="-OpenSSL-Encrypted-3"
-            if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
-                if [[ -z $tcert ]];then
+            if [ "$WSREP_SST_OPT_ROLE" = "joiner" ];then
+                if [ -z "$tcert" ];then
                     wsrep_log_info "Decrypting with cert=${tpem}, key=${tkey}, verify=0"
                     tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tpem},key=${tkey},verify=0${sockopt} stdio"
                 else
@@ -237,7 +237,7 @@ get_transfer()
                     tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tpem},key=${tkey},cafile=${tcert}${sockopt} stdio"
                 fi
             else
-                if [[ -z $tcert ]];then
+                if [ -z "$tcert" ];then
                     wsrep_log_info "Encrypting with cert=${tpem}, key=${tkey}, verify=0"
                     tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=${tpem},key=${tkey},verify=0${sockopt}"
                 else
@@ -247,7 +247,7 @@ get_transfer()
             fi
 
         else 
-            if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
+            if [ "$WSREP_SST_OPT_ROLE" == "joiner" ];then
                 tcmd="socat -u TCP-LISTEN:${TSST_PORT},reuseaddr${sockopt} stdio"
             else
                 tcmd="socat -u stdio TCP:${REMOTEIP}:${TSST_PORT}${sockopt}"
@@ -266,8 +266,8 @@ parse_cnf()
     # then grep for needed variable
     # finally get the variable value (if variables has been specified multiple time use the last value only)
     reval=$($MY_PRINT_DEFAULTS $group | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2- | tail -1)
-    if [[ -z $reval ]];then 
-        [[ -n $3 ]] && reval=$3
+    if [ -z "$reval" ];then 
+        [ -n "$3" ] && reval=$3
     fi
     echo $reval
 }
@@ -298,18 +298,18 @@ adjust_progress()
         return
     fi
 
-    if [[ -n $progress && $progress != '1' ]];then 
-        if [[ -e $progress ]];then 
+    if [ -n "$progress" -a "$progress" != '1' ];then 
+        if [ -e "$progress" ];then 
             pcmd+=" 2>>$progress"
         else 
             pcmd+=" 2>$progress"
         fi
-    elif [[ -z $progress && -n $rlimit  ]];then 
+    elif [ -z "$progress" -a -n "$rlimit" ];then 
             # When rlimit is non-zero
             pcmd="pv -q"
     fi 
 
-    if [[ -n $rlimit && "$WSREP_SST_OPT_ROLE"  == "donor" ]];then
+    if [ -n "$rlimit" -a "$WSREP_SST_OPT_ROLE" = "donor" ];then
         wsrep_log_info "Rate-limiting SST to $rlimit"
         pcmd+=" -L \$rlimit"
     fi
@@ -335,7 +335,7 @@ read_cnf()
     sdecomp=$(parse_cnf sst decompressor "")
 
     # Refer to http://www.percona.com/doc/percona-xtradb-cluster/manual/xtrabackup_sst.html 
-    if [[ -z $ealgo ]];then
+    if [ -z "$ealgo" ];then
         ealgo=$(parse_cnf sst encrypt-algo "")
         ekey=$(parse_cnf sst encrypt-key "")
         ekeyfile=$(parse_cnf sst encrypt-key-file "")
@@ -352,18 +352,18 @@ read_cnf()
     ssystag=$(parse_cnf mysqld_safe syslog-tag "${SST_SYSLOG_TAG:-}")
     ssystag+="-"
 
-    if [[ $speciald -eq 0 ]];then 
+    if [ $speciald -eq 0 ];then 
         wsrep_log_error "sst-special-dirs equal to 0 is not supported, falling back to 1"
         speciald=1
     fi 
 
-    if [[ $ssyslog -ne -1 ]];then 
+    if [ $ssyslog -ne -1 ];then 
         if $MY_PRINT_DEFAULTS mysqld_safe | tr '_' '-' | grep -q -- "--syslog";then 
             ssyslog=1
         fi
     fi
 
-    if [[ $encrypt -eq 1 ]]; then
+    if [ $encrypt -eq 1 ]; then
         wsrep_log_error "Xtrabackup-based encryption is currently not" \
             "supported with MariaBackup"
         exit 2
@@ -372,9 +372,9 @@ read_cnf()
 
 get_stream()
 {
-    if [[ $sfmt == 'xbstream' ]];then 
+    if [ "$sfmt" == 'xbstream' ];then 
         wsrep_log_info "Streaming with xbstream"
-        if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
+        if [ "$WSREP_SST_OPT_ROLE" = "joiner" ];then
             strmcmd="${XBSTREAM_BIN} -x"
         else
             strmcmd="${XBSTREAM_BIN} -c \${INFO_FILE}"
@@ -382,7 +382,7 @@ get_stream()
     else
         sfmt="tar"
         wsrep_log_info "Streaming with tar"
-        if [[ "$WSREP_SST_OPT_ROLE"  == "joiner" ]];then
+        if [ "$WSREP_SST_OPT_ROLE" = "joiner" ];then
             strmcmd="tar xfi - "
         else
             strmcmd="tar cf - \${INFO_FILE} "
@@ -395,7 +395,7 @@ get_proc()
 {
     set +e
     nproc=$(grep -c processor /proc/cpuinfo)
-    [[ -z $nproc || $nproc -eq 0 ]] && nproc=1
+    [ -z "$nproc" -o $nproc -eq 0 ] && nproc=1
     set -e
 }
 
@@ -409,18 +409,18 @@ cleanup_joiner()
 {
     # Since this is invoked just after exit NNN
     local estatus=$?
-    if [[ $estatus -ne 0 ]];then 
+    if [ $estatus -ne 0 ];then 
         wsrep_log_error "Cleanup after exit with status:$estatus"
     elif [ "${WSREP_SST_OPT_ROLE}" = "joiner" ];then
         wsrep_log_info "Removing the sst_in_progress file"
         wsrep_cleanup_progress_file
     fi
-    if [[ -n $progress && -p $progress ]];then 
+    if [ -n "$progress" && -p "$progress" ];then 
         wsrep_log_info "Cleaning up fifo file $progress"
         rm $progress
     fi
-    if [[ -n ${STATDIR:-} ]];then 
-       [[ -d $STATDIR ]] && rm -rf $STATDIR
+    if [ -n "${STATDIR:-}" ];then 
+       [ -d "$STATDIR" ] && rm -rf $STATDIR
     fi
 
     # Final cleanup 
@@ -428,11 +428,11 @@ cleanup_joiner()
 
     # This means no setsid done in mysqld.
     # We don't want to kill mysqld here otherwise.
-    if [[ $$ -eq $pgid ]];then
+    if [ $$ -eq $pgid ];then
 
         # This means a signal was delivered to the process.
         # So, more cleanup. 
-        if [[ $estatus -ge 128 ]];then 
+        if [ $estatus -ge 128 ];then 
             kill -KILL -$$ || true
         fi
 
@@ -451,11 +451,11 @@ cleanup_donor()
 {
     # Since this is invoked just after exit NNN
     local estatus=$?
-    if [[ $estatus -ne 0 ]];then 
+    if [ $estatus -ne 0 ];then 
         wsrep_log_error "Cleanup after exit with status:$estatus"
     fi
 
-    if [[ -n ${XTRABACKUP_PID:-} ]];then 
+    if [ -n "${XTRABACKUP_PID:-}" ];then 
         if check_pid $XTRABACKUP_PID
         then
             wsrep_log_error "xtrabackup process is still running. Killing... "
@@ -465,19 +465,19 @@ cleanup_donor()
     fi
     rm -f ${DATA}/${IST_FILE} || true
 
-    if [[ -n $progress && -p $progress ]];then 
+    if [ -n "$progress" -a -p "$progress" ];then 
         wsrep_log_info "Cleaning up fifo file $progress"
         rm -f $progress || true
     fi
 
     wsrep_log_info "Cleaning up temporary directories"
 
-    if [[ -n $xtmpdir ]];then 
-       [[ -d $xtmpdir ]] &&  rm -rf $xtmpdir || true
+    if [ -n "$xtmpdir" ];then 
+       [ -d "$xtmpdir" ] &&  rm -rf $xtmpdir || true
     fi
 
-    if [[ -n $itmpdir ]];then 
-       [[ -d $itmpdir ]] &&  rm -rf $itmpdir || true
+    if [ -n "$itmpdir" ];then 
+       [ -d "$itmpdir" ] &&  rm -rf $itmpdir || true
     fi
 
     # Final cleanup 
@@ -485,11 +485,11 @@ cleanup_donor()
 
     # This means no setsid done in mysqld.
     # We don't want to kill mysqld here otherwise.
-    if [[ $$ -eq $pgid ]];then
+    if [ $$ -eq $pgid ];then
 
         # This means a signal was delivered to the process.
         # So, more cleanup. 
-        if [[ $estatus -ge 128 ]];then 
+        if [ $estatus -ge 128 ];then 
             kill -KILL -$$ || true
         fi
 
@@ -509,11 +509,11 @@ kill_xtrabackup()
 
 setup_ports()
 {
-    if [[ "$WSREP_SST_OPT_ROLE"  == "donor" ]];then
+    if [ "$WSREP_SST_OPT_ROLE" = "donor" ];then
         SST_PORT=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $2 }')
         REMOTEIP=$(echo $WSREP_SST_OPT_ADDR | awk -F ':' '{ print $1 }')
         REMOTEHOST=$(getent hosts $REMOTEIP | awk '{ print $2 }')
-        if [[ -z $REMOTEHOST ]];then
+        if [ -z "$REMOTEHOST" ];then
             REMOTEHOST=$REMOTEIP
         fi
         lsn=$(echo $WSREP_SST_OPT_ADDR | awk -F '[:/]' '{ print $4 }')
@@ -532,7 +532,11 @@ wait_for_listen()
     local MODULE=$3
     for i in {1..50}
     do
-        ss -p state listening "( sport = :$PORT )" | grep -qE 'socat|nc' && break
+        if [ "$OS" = "FreeBSD" ];then
+            sockstat -46lp $PORT | grep -qE "^[^ ]* *(socat|nc) *[^ ]* *[^ ]* *[^ ]* *[^ ]*:$PORT" && break
+        else
+            ss -p state listening "( sport = :$PORT )" | grep -qE 'socat|nc' && break
+        fi
         sleep 0.2
     done
     echo "ready ${ADDR}/${MODULE}//$sst_ver"
@@ -541,10 +545,10 @@ wait_for_listen()
 check_extra()
 {
     local use_socket=1
-    if [[ $uextra -eq 1 ]];then 
+    if [ $uextra -eq 1 ];then 
         if $MY_PRINT_DEFAULTS --mysqld | tr '_' '-' | grep -- "--thread-handling=" | grep -q 'pool-of-threads';then 
             local eport=$($MY_PRINT_DEFAULTS --mysqld | tr '_' '-' | grep -- "--extra-port=" | cut -d= -f2)
-            if [[ -n $eport ]];then 
+            if [ -n "$eport" ];then 
                 # Xtrabackup works only locally.
                 # Hence, setting host to 127.0.0.1 unconditionally. 
                 wsrep_log_info "SST through extra_port $eport"
@@ -558,7 +562,7 @@ check_extra()
             wsrep_log_info "Thread pool not set, ignore the option use_extra"
         fi
     fi
-    if [[ $use_socket -eq 1 ]] && [[ -n "${WSREP_SST_OPT_SOCKET}" ]];then
+    if [ $use_socket -eq 1 ] && [ -n "${WSREP_SST_OPT_SOCKET}" ];then
         INNOEXTRA+=" --socket=${WSREP_SST_OPT_SOCKET}"
     fi
 }
@@ -571,7 +575,7 @@ recv_joiner()
     local checkf=$4
     local ltcmd
 
-    if [[ ! -d ${dir} ]];then
+    if [ ! -d "${dir}" ];then
         # This indicates that IST is in progress
         return
     fi
@@ -579,7 +583,7 @@ recv_joiner()
     pushd ${dir} 1>/dev/null
     set +e
 
-    if [[ $tmt -gt 0 ]] && command -v timeout >/dev/null;then
+    if [ $tmt -gt 0 ] && command -v timeout >/dev/null;then
         if timeout --help | grep -q -- '-k';then 
             ltcmd="timeout -k $(( tmt+10 )) $tmt $tcmd"
         else 
@@ -593,20 +597,20 @@ recv_joiner()
     set -e
     popd 1>/dev/null 
 
-    if [[ ${RC[0]} -eq 124 ]];then 
+    if [ ${RC[0]} -eq 124 ];then 
         wsrep_log_error "Possible timeout in receving first data from donor in gtid stage"
         exit 32
     fi
 
     for ecode in "${RC[@]}";do 
-        if [[ $ecode -ne 0 ]];then 
+        if [ $ecode -ne 0 ];then 
             wsrep_log_error "Error while getting data from donor node: " \
                             "exit codes: ${RC[@]}"
             exit 32
         fi
     done
 
-    if [[ $checkf -eq 1 && ! -r "${MAGIC_FILE}" ]];then
+    if [ $checkf -eq 1 -a ! -r "${MAGIC_FILE}" ];then
         # this message should cause joiner to abort
         wsrep_log_error "xtrabackup process ended without creating '${MAGIC_FILE}'"
         wsrep_log_info "Contents of datadir" 
@@ -629,7 +633,7 @@ send_donor()
 
 
     for ecode in "${RC[@]}";do 
-        if [[ $ecode -ne 0 ]];then 
+        if [ $ecode -ne 0 ];then 
             wsrep_log_error "Error while getting data from donor node: " \
                             "exit codes: ${RC[@]}"
             exit 32
@@ -642,7 +646,7 @@ wsrep_check_programs "$INNOBACKUPEX_BIN"
 
 rm -f "${MAGIC_FILE}"
 
-if [[ ! ${WSREP_SST_OPT_ROLE} == 'joiner' && ! ${WSREP_SST_OPT_ROLE} == 'donor' ]];then 
+if [ ! ${WSREP_SST_OPT_ROLE} = 'joiner' -a ! ${WSREP_SST_OPT_ROLE} = 'donor' ];then 
     wsrep_log_error "Invalid role ${WSREP_SST_OPT_ROLE}"
     exit 22
 fi
@@ -654,7 +658,7 @@ if ${INNOBACKUPEX_BIN} /tmp --help 2>/de
     disver="--no-version-check"
 fi
 
-if [[ ${FORCE_FTWRL:-0} -eq 1 ]];then 
+if [ ${FORCE_FTWRL:-0} -eq 1 ];then 
     wsrep_log_info "Forcing FTWRL due to environment variable FORCE_FTWRL equal to $FORCE_FTWRL"
     iopts+=" --no-backup-locks "
 fi
@@ -662,7 +666,7 @@ fi
 
 INNOEXTRA=""
 
-if [[ $ssyslog -eq 1 ]];then 
+if [ $ssyslog -eq 1 ];then 
 
     if ! command -v logger >/dev/null;then
         wsrep_log_error "logger not in path: $PATH. Ignoring"
@@ -703,13 +707,13 @@ then
     if [ $WSREP_SST_OPT_BYPASS -eq 0 ]
     then
         usrst=0
-        if [[ -z $sst_ver ]];then 
+        if [ -z "$sst_ver" ];then 
             wsrep_log_error "Upgrade joiner to 5.6.21 or higher for backup locks support"
             wsrep_log_error "The joiner is not supported for this version of donor"
             exit 93
         fi
 
-        if [[ -z $(parse_cnf mysqld tmpdir "") && -z $(parse_cnf xtrabackup tmpdir "") ]];then 
+        if [ -z $(parse_cnf mysqld tmpdir "") -a -z $(parse_cnf xtrabackup tmpdir "") ];then 
             xtmpdir=$(mktemp -d)
             tmpopts=" --tmpdir=$xtmpdir "
             wsrep_log_info "Using $xtmpdir as xtrabackup temporary directory"
@@ -718,21 +722,21 @@ then
         itmpdir=$(mktemp -d)
         wsrep_log_info "Using $itmpdir as innobackupex temporary directory"
 
-        if [[ -n "${WSREP_SST_OPT_USER:-}" && "$WSREP_SST_OPT_USER" != "(null)" ]]; then
+        if [ -n "${WSREP_SST_OPT_USER:-}" -a "$WSREP_SST_OPT_USER" != "(null)" ]; then
            INNOEXTRA+=" --user=$WSREP_SST_OPT_USER"
            usrst=1
         fi
 
-        if [ -n "${WSREP_SST_OPT_PSWD:-}" ]; then
+        if [ -n "${WSREP_SST_OPT_PSWD:-}" ];then
            INNOEXTRA+=" --password=$WSREP_SST_OPT_PSWD"
-        elif [[ $usrst -eq 1 ]];then
+        elif [ $usrst -eq 1 ];then
            # Empty password, used for testing, debugging etc.
            INNOEXTRA+=" --password="
         fi
 
         get_keys
-        if [[ $encrypt -eq 1 ]];then
-            if [[ -n $ekey ]];then
+        if [ $encrypt -eq 1 ];then
+            if [ -n "$ekey" ];then
                 INNOEXTRA+=" --encrypt=$ealgo --encrypt-key=$ekey "
             else 
                 INNOEXTRA+=" --encrypt=$ealgo --encrypt-key-file=$ekeyfile "
@@ -750,13 +754,13 @@ then
 
         ttcmd="$tcmd"
 
-        if [[ $encrypt -eq 1 ]];then
-            if [[ -n $scomp ]];then 
+        if [ $encrypt -eq 1 ];then
+            if [ -n "$scomp" ];then 
                 tcmd=" $ecmd | $scomp | $tcmd "
             else 
                 tcmd=" $ecmd | $tcmd "
             fi
-        elif [[ -n $scomp ]];then 
+        elif [ -n "$scomp" ];then 
             tcmd=" $scomp | $tcmd "
         fi
 
@@ -764,10 +768,10 @@ then
         send_donor $DATA "${stagemsg}-gtid"
 
         tcmd="$ttcmd"
-        if [[ -n $progress ]];then 
+        if [ -n "$progress" ];then 
             get_footprint
             tcmd="$pcmd | $tcmd"
-        elif [[ -n $rlimit ]];then 
+        elif [ -n "$rlimit" ];then 
             adjust_progress
             tcmd="$pcmd | $tcmd"
         fi
@@ -777,7 +781,7 @@ then
 
         wsrep_log_info "Streaming the backup to joiner at ${REMOTEIP} ${SST_PORT:-4444}"
 
-        if [[ -n $scomp ]];then 
+        if [ -n "$scomp" ];then 
             tcmd="$scomp | $tcmd"
         fi
 
@@ -789,7 +793,7 @@ then
           wsrep_log_error "${INNOBACKUPEX_BIN} finished with error: ${RC[0]}. " \
                           "Check ${DATA}/innobackup.backup.log"
           exit 22
-        elif [[ ${RC[$(( ${#RC[@]}-1 ))]} -eq 1 ]];then 
+        elif [ ${RC[$(( ${#RC[@]}-1 ))]} -eq 1 ];then 
           wsrep_log_error "$tcmd finished with error: ${RC[1]}"
           exit 22
         fi
@@ -808,13 +812,13 @@ then
         echo "${WSREP_SST_OPT_GTID} ${WSREP_SST_OPT_GTID_DOMAIN_ID}" > "${MAGIC_FILE}"
         echo "1" > "${DATA}/${IST_FILE}"
         get_keys
-        if [[ $encrypt -eq 1 ]];then
-            if [[ -n $scomp ]];then 
+        if [ $encrypt -eq 1 ];then
+            if [ -n "$scomp" ];then 
                 tcmd=" $ecmd | $scomp | $tcmd "
             else
                 tcmd=" $ecmd | $tcmd "
             fi
-        elif [[ -n $scomp ]];then 
+        elif [ -n "$scomp" ];then 
             tcmd=" $scomp | $tcmd "
         fi
         strmcmd+=" \${IST_FILE}"
@@ -828,8 +832,8 @@ then
 
 elif [ "${WSREP_SST_OPT_ROLE}" = "joiner" ]
 then
-    [[ -e $SST_PROGRESS_FILE ]] && wsrep_log_info "Stale sst_in_progress file: $SST_PROGRESS_FILE"
-    [[ -n $SST_PROGRESS_FILE ]] && touch $SST_PROGRESS_FILE
+    [ -e "$SST_PROGRESS_FILE" ] && wsrep_log_info "Stale sst_in_progress file: $SST_PROGRESS_FILE"
+    [ -n "$SST_PROGRESS_FILE" ] && touch $SST_PROGRESS_FILE
 
     ib_home_dir=$(parse_cnf mysqld innodb-data-home-dir "")
     ib_log_dir=$(parse_cnf mysqld innodb-log-group-home-dir "")
@@ -860,19 +864,19 @@ then
     trap sig_joiner_cleanup HUP PIPE INT TERM
     trap cleanup_joiner EXIT
 
-    if [[ -n $progress ]];then 
+    if [ -n "$progress" ];then 
         adjust_progress
         tcmd+=" | $pcmd"
     fi
 
     get_keys
-    if [[ $encrypt -eq 1 && $sencrypted -eq 1 ]];then
-        if [[ -n $sdecomp ]];then 
+    if [ $encrypt -eq 1 -a $sencrypted -eq 1 ];then
+        if [ -n "$sdecomp" ];then 
             strmcmd=" $sdecomp | $ecmd | $strmcmd"
         else 
             strmcmd=" $ecmd | $strmcmd"
         fi
-    elif [[ -n $sdecomp ]];then 
+    elif [ -n "$sdecomp" ];then 
             strmcmd=" $sdecomp | $strmcmd"
     fi
 
@@ -890,7 +894,7 @@ then
     if [ ! -r "${STATDIR}/${IST_FILE}" ]
     then
 
-        if [[ -d ${DATA}/.sst ]];then
+        if [ -d "${DATA}/.sst" ];then
             wsrep_log_info "WARNING: Stale temporary SST directory: ${DATA}/.sst from previous state transfer. Removing"
             rm -rf ${DATA}/.sst
         fi
@@ -901,13 +905,17 @@ then
 
 
         wsrep_log_info "Cleaning the existing datadir and innodb-data/log directories"
-        find $ib_home_dir $ib_log_dir $ib_undo_dir $DATA -mindepth 1  -regex $cpat  -prune  -o -exec rm -rfv {} 1>&2 \+
+        if [ "$OS" = "FreeBSD" ]; then
+            find -E $ib_home_dir $ib_log_dir $ib_undo_dir $DATA -mindepth 1  -regex $cpat  -prune  -o -exec rm -rfv {} 1>&2 \+
+        else
+            find $ib_home_dir $ib_log_dir $ib_undo_dir $DATA -mindepth 1  -regex $cpat  -prune  -o -exec rm -rfv {} 1>&2 \+
+        fi
 
         tempdir=$(parse_cnf mysqld log-bin "")
-        if [[ -n ${tempdir:-} ]];then
+        if [ -n "${tempdir:-}" ];then
             binlog_dir=$(dirname $tempdir)
             binlog_file=$(basename $tempdir)
-            if [[ -n ${binlog_dir:-} && $binlog_dir != '.' && $binlog_dir != $DATA ]];then
+            if [ -n "${binlog_dir:-}" -a "$binlog_dir" != '.' -a "$binlog_dir" != "$DATA" ];then
                 pattern="$binlog_dir/$binlog_file\.[0-9]+$"
                 wsrep_log_info "Cleaning the binlog directory $binlog_dir as well"
                 find $binlog_dir -maxdepth 1 -type f -regex $pattern -exec rm -fv {} 1>&2 \+ || true
@@ -915,36 +923,33 @@ then
             fi
         fi
 
-
-
         TDATA=${DATA}
         DATA="${DATA}/.sst"
 
-
         MAGIC_FILE="${DATA}/${INFO_FILE}"
         wsrep_log_info "Waiting for SST streaming to complete!"
         wait $jpid
 
         get_proc
 
-        if [[ ! -s ${DATA}/xtrabackup_checkpoints ]];then 
+        if [ ! -s "${DATA}/xtrabackup_checkpoints" ];then 
             wsrep_log_error "xtrabackup_checkpoints missing, failed innobackupex/SST on donor"
             exit 2
         fi
 
         # Rebuild indexes for compact backups
-        if grep -q 'compact = 1' ${DATA}/xtrabackup_checkpoints;then 
+        if grep -q 'compact = 1' "${DATA}/xtrabackup_checkpoints";then 
             wsrep_log_info "Index compaction detected"
             rebuild=1
         fi
 
-        if [[ $rebuild -eq 1 ]];then 
+        if [ $rebuild -eq 1 ];then 
             nthreads=$(parse_cnf xtrabackup rebuild-threads $nproc)
             wsrep_log_info "Rebuilding during prepare with $nthreads threads"
             rebuildcmd="--rebuild-indexes --rebuild-threads=$nthreads"
         fi
 
-        if test -n "$(find ${DATA} -maxdepth 1 -type f -name '*.qp' -print -quit)";then
+        if [ -n "$(find ${DATA} -maxdepth 1 -type f -name '*.qp' -print -quit)" ];then
 
             wsrep_log_info "Compressed qpress files found"
 
@@ -953,7 +958,7 @@ then
                 exit 22
             fi
 
-            if [[ -n $progress ]] && pv --help | grep -q 'line-mode';then
+            if [ -n "$progress" ] && pv --help | grep -q 'line-mode';then
                 count=$(find ${DATA} -type f -name '*.qp' | wc -l)
                 count=$(( count*2 ))
                 if pv --help | grep -q FORMAT;then 
@@ -974,10 +979,10 @@ then
             timeit "Joiner-Decompression" "find ${DATA} -type f -name '*.qp' -printf '%p\n%h\n' | $dcmd"
             extcode=$?
 
-            if [[ $extcode -eq 0 ]];then
+            if [ $extcode -eq 0 ];then
                 wsrep_log_info "Removing qpress files after decompression"
                 find ${DATA} -type f -name '*.qp' -delete 
-                if [[ $? -ne 0 ]];then 
+                if [ $? -ne 0 ];then 
                     wsrep_log_error "Something went wrong with deletion of qpress files. Investigate"
                 fi
             else
@@ -987,7 +992,7 @@ then
         fi
 
 
-        if  [[ ! -z $WSREP_SST_OPT_BINLOG ]];then
+        if  [ ! -z "$WSREP_SST_OPT_BINLOG" ];then
 
             BINLOG_DIRNAME=$(dirname $WSREP_SST_OPT_BINLOG)
             BINLOG_FILENAME=$(basename $WSREP_SST_OPT_BINLOG)
@@ -1018,7 +1023,7 @@ then
         set -e
         wsrep_log_info "Moving the backup to ${TDATA}"
         timeit "Xtrabackup move stage" "$INNOMOVE"
-        if [[ $? -eq 0 ]];then 
+        if [ $? -eq 0 ];then 
             wsrep_log_info "Move successful, removing ${DATA}"
             rm -rf $DATA
             DATA=${TDATA}
@@ -1033,7 +1038,7 @@ then
         wsrep_log_info "${IST_FILE} received from donor: Running IST"
     fi
 
-    if [[ ! -r ${MAGIC_FILE} ]];then 
+    if [ ! -r "${MAGIC_FILE}" ];then 
         wsrep_log_error "SST magic file ${MAGIC_FILE} not found/readable"
         exit 2
     fi
--- scripts/wsrep_sst_common.sh.orig	2018-07-13 13:20:36.140952000 +0200
+++ scripts/wsrep_sst_common.sh	2018-07-13 13:21:27.996953000 +0200
@@ -28,6 +28,11 @@ WSREP_SST_OPT_DEFAULT=""
 WSREP_SST_OPT_EXTRA_DEFAULT=""
 WSREP_SST_OPT_SUFFIX_DEFAULT=""
 
+# Check to see if we're running bash
+[ $(ps -o command -p $$ | grep -c bash) -gt 0 ] && shisbash=1
+# Needed by some scripts
+OS=$(uname)
+
 while [ $# -gt 0 ]; do
 case "$1" in
     '--address')