path: root/tests/include.rc

M0=${M0:=/mnt/glusterfs/0};   # 0th mount point for FUSE
M1=${M1:=/mnt/glusterfs/1};   # 1st mount point for FUSE
M2=${M2:=/mnt/glusterfs/2};   # 2nd mount point for FUSE
N0=${N0:=/mnt/nfs/0};         # 0th mount point for NFS
N1=${N1:=/mnt/nfs/1};         # 1st mount point for NFS
V0=${V0:=patchy};             # volume name to use in tests
V1=${V1:=patchy1};            # volume name to use in tests
B0=${B0:=/d/backends};        # top level of brick directories
WORKDIRS="$B0 $M0 $M1 $M2 $N0 $N1" 
CC=cc
OSTYPE=$(uname -s)

ENV_RC=$(dirname $0)/../env.rc
if [ ! -f $ENV_RC ]; then
   ENV_RC=$(dirname $0)/../../env.rc
   if [ ! -f $ENV_RC ]; then
      ENV_RC=$(dirname $0)/../../../env.rc
   fi
fi

if [ ! -f $ENV_RC ]; then
   echo "Aborting." | tee /dev/stderr
   echo | tee /dev/stderr
   echo "env.rc not found" | tee /dev/stderr
   echo | tee /dev/stderr
   echo "Please correct the problem and try again." | tee /dev/stderr
   echo | tee /dev/stderr
   exit 1
fi
. $ENV_RC

H0=${H0:=`hostname`}; # hostname
MOUNT_TYPE_FUSE="fuse.glusterfs"
GREP_MOUNT_OPT_RO="grep (ro"
GREP_MOUNT_OPT_RW="grep (rw"

PATH=$PATH:${PWD}/tests/utils

case $OSTYPE in
Linux)
  H0=${H0:=`hostname --fqdn`}; # hostname
  ;;
NetBSD)
  MOUNT_TYPE_FUSE="puffs|perfuse|fuse.glusterfs"
  GREP_MOUNT_OPT_RO="grep (read-only"
  GREP_MOUNT_OPT_RW="grep -v (read-only"
  ;;
*)
  ;;
esac

DEBUG=${DEBUG:=0}             # turn on debugging?

PROCESS_UP_TIMEOUT=20
NFS_EXPORT_TIMEOUT=20
CHILD_UP_TIMEOUT=20
PROBE_TIMEOUT=60
REBALANCE_TIMEOUT=360
REOPEN_TIMEOUT=20
HEAL_TIMEOUT=80
MARKER_UPDATE_TIMEOUT=20
JANITOR_TIMEOUT=60
UMOUNT_TIMEOUT=5
CONFIG_UPDATE_TIMEOUT=5

statedumpdir=`gluster --print-statedumpdir`; # Default directory for statedump

CLI="gluster --mode=script --wignore";
GFS="glusterfs --attribute-timeout=0 --entry-timeout=0";

mkdir -p $WORKDIRS

case $OSTYPE in
FreeBSD | Darwin)
wc () {
   if test "x$1" = "x-l"; then
      awk '{ lines++ } END {print lines}'
   fi
   if test "x$1" = "x-w"; then
      awk '{ words += NF } END {print words}' }
   fi
   if test "x$1" = "x-c"; then
      awk '{ chars += length($0) + 1 } END {print chars}'
   fi
   if test "x$1" = "x-m"; then
      awk '{ chars += length($0) + 1 } END {print chars}'
   fi
}
;;
NetBSD)
wc() {
    /usr/bin/wc $@ | sed 's/^ *\([0-9]*\).*$/\1/g'
}
;;
esac

testcnt=`egrep '^[[:space:]]*(EXPECT|EXPECT_NOT|TEST|EXPECT_WITHIN|EXPECT_KEYWORD)[[:space:]]' $0 | wc -l`
expect_tests=`egrep '^[[:space:]]*TESTS_EXPECTED_IN_LOOP[[:space:]]*' $0`

x_ifs=$IFS
IFS=$'\n'
for line in $expect_tests; do
        expect_tests=`echo $line | cut -f 2 -d =`
        testcnt=`expr $testcnt + $expect_tests`
done
IFS=$x_ifs

echo "1..`echo $testcnt`"

t=1

function dbg()
{
        [ "x$DEBUG" = "x0" ] || echo "$*" >&2;
}


function test_header()
{
        dbg "=========================";
        dbg "TEST $t (line $TESTLINE): $*";
        saved_cmd="$*"
}


function test_footer()
{
        RET=$?
        local err=$1

        if [ $RET -eq 0 ]; then
                echo "ok $t";
        else
                echo "not ok $t $err";
                # With DEBUG, this was already printed out, so skip it.
                if [ x"$DEBUG" = x"0" ]; then
                        echo "FAILED COMMAND: $saved_cmd"
                fi
                if [ "$EXIT_EARLY" = "1" ]; then
                        exit $RET
                fi
        fi

        dbg "RESULT $t: $RET";

        t=`expr $t + 1`;
}

function test_expect_footer()
{
        local e=$1
        local a=$2
        local err=""

        if ! [[ "$a" =~ $e ]]; then
                err="Got \"$a\" instead of \"$e\""
        fi
        [[ "$a" =~ $e ]];

        test_footer "$err";
}

function _EXPECT()
{
        TESTLINE=$1;
        shift;
        local a=""

        test_header "$@";

        e="$1";
        shift;
        a=$("$@" | tail -1)

        if [ "x$e" = "x" ] ; then
                test_expect_footer "x$e" "x$a";
        else
                test_expect_footer "$e" "$a";
        fi
}

function test_expect_not_footer()
{
        local e=$1
        local a=$2
        local err=""

        if [[ "$a" =~ $e ]]; then
                err="Got \"$a\" when not expecting it"
        fi

        ! [[ "$a" =~ "$e" ]];
        test_footer "$err";
}

function _EXPECT_NOT()
{
        TESTLINE=$1;
        shift;
        local a=""

        test_header "$@";

        e="$1";
        shift;
        a=$("$@" | tail -1)

        if [ "x$e" = "x" ] ; then
               test_expect_not_footer "x$e" "x$a";
        else
               test_expect_not_footer "$e" "$a";
        fi
}

function _EXPECT_KEYWORD()
{
        TESTLINE=$1;
        shift;

        test_header "$@";

        e="$1";
        shift;
        "$@" | tail -1 | grep -q "$e"

        test_footer;
}


function _TEST()
{
        TESTLINE=$1;
        shift;
        local redirect=""

        test_header "$@";

        if [ "$1" = "!" ]; then
                redirect="2>&1"
        fi

        eval "$@" >/dev/null $redirect

        test_footer;
}

function _EXPECT_WITHIN()
{
        TESTLINE=$1
        shift;

        local timeout=$1
        shift;

        test_header "$@"

        e=$1;
        a="";
        shift;

        local endtime=$(( ${timeout}+`date +%s` ))

        while [ `date +%s` -lt $endtime ]; do
                a=$("$@" | tail -1 ; exit ${PIPESTATUS[0]})
                ## Check command success
                if [ $? -ne 0 ]; then
                        break;
                fi

                ## Check match success
                if [[ "$a" =~ "$e" ]]; then
                        break;
                fi
                sleep 1;
        done

        if [ "x$e" = "x" ] ; then
               test_expect_footer "x$e" "x$a";
        else
               test_expect_footer "$e" "$a";
        fi
}


function SKIP_TESTS()
{
        dbg "Skipping tests $t-$testcnt";
        while [ $t -le $testcnt ]; do
                true ; test_footer;
        done
}


function _TEST_IN_LOOP()
{
        testcnt=`expr $testcnt + 1`;
        _TEST $@
}

which killall > /dev/null || {
  killall() {
    pkill $@
  }
}

which pidof > /dev/null || {
  pidof() {
    $PYTHON pidof.py $@
  }
}

stat -c %s /dev/null > /dev/null 2>&1 || {
  stat() {
    local format=""
    local f=""

    if [ "x$1" = "x-c" ] ; then
      oformat=$2
      shift
      shift
      files=$@
    else
      files=$@
    fi

    for f in $files ; do
        format=$oformat

      # %t/%T should return 0 for non devices.
      case "${format}" in
      *%t*|*%T*)
        `which stat` -f '%HT' $f | grep -q 'Device$' || \
           format=`echo "${format}" | sed 's/%t/0/g; s/%T/0/g;'`
        ;;
      *)
        ;;
      esac

      if [ "x${format}" = "x" ] ; then
        `which stat` $f
      else
         cmd=""
         case $format in
         *%u*) cmd="${cmd} s/%u/`$( which stat ) -f %u $f`/g;" ;&
         *%g*) cmd="${cmd} s/%g/`$( which stat ) -f %g $f`/g;" ;&
         *%a*) cmd="${cmd} s/%a/`$( which stat ) -f %p $f |
                    sed 's/^..//; s/^0//'`/g;" ;&
         *%A*) cmd="${cmd} s/%A/`ls -ld $f|awk '{print $1}'`/g;" ;&
         *%s*) cmd="${cmd} s/%s/`$( which stat ) -f %z $f`/g;" ;&
         *%h*) cmd="${cmd} s/%h/`$( which stat ) -f %l $f`/g;" ;&
         *%F*) cmd="${cmd} s/%F/`$( which stat ) -f %HT $f | sed '
            s/Directory/directory/;
            s/Fifo File/fifo/;
            s/Symbolic Link/symbolic link/;
            s/Regular File/regular file/;
            s/Block Device/block special file/;
            s/Character Device/character special file/;
           ' | sed \"$(
             test -s $f || echo 's/regular file/regular empty file/g'
            )\"`/g;" ;&
         *%n*) cmd="${cmd} s|%n|`$( which stat ) -f %N $f`|g;" ;&
         *%Y*) cmd="${cmd} s/%Y/`$( which stat ) -f %m $f`/g;" ;&
         *%X*) cmd="${cmd} s/%X/`$( which stat ) -f %a $f`/g;" ;&
         *%Z*) cmd="${cmd} s/%Z/`$( which stat ) -f %c $f`/g;" ;&
         *%b*) cmd="${cmd} s/%b/`$( which stat ) -f %b $f`/g;" ;&
         *%B*) cmd="${cmd} s/%B/512/g;" ;&
         *%t*) cmd="${cmd} s/%t/`$( which stat ) -f %XHr $f`/g;" ;&
         *%T*) cmd="${cmd} s/%T/`$( which stat ) -f %XLr $f`/g;" ;&
         esac

         `which stat` -f "`echo $format|sed \"$cmd\"`" $f
      fi
    done
  }
}

function cleanup()
{
        # unmount filesystems before killing daemons to avoid deadllocks
        MOUNTPOINTS=`mount | grep "$B0/" | awk '{print $3}'`
        for m in $MOUNTPOINTS;
        do
                umount $m
        done

        killall -15 glusterfs glusterfsd glusterd 2>/dev/null || true;
        test x"$OSTYPE" = x"NetBSD" && pkill -15 perfused rpc.statd || true
        # allow completion of signal handlers for SIGTERM before issue SIGKILL
        sleep 1
        killall -9 glusterfs glusterfsd glusterd 2>/dev/null || true;
        test x"$OSTYPE" = x"NetBSD" && pkill -9 perfused rpc.statd || true

        # unregister nfs and related services from portmapper/rpcbind
        ## nfs
        rpcinfo -d 100003 3 2>/dev/null || true;
        ## mountd
        rpcinfo -d 100005 1 2>/dev/null || true;
        rpcinfo -d 100005 3 2>/dev/null || true;
        ## nlockmgr
        rpcinfo -d 100021 1 2>/dev/null || true;
        rpcinfo -d 100021 4 2>/dev/null || true;
        ## nfs_acl
        rpcinfo -d 100227 3 2>/dev/null || true;

        type cleanup_lvm &>/dev/null && cleanup_lvm || true;

        case `uname -s` in
        Linux)
                LOOPDEVICES=`losetup -a | grep "$B0/" | \
                             awk '{print $1}' | tr -d :`
                for l in $LOOPDEVICES;
                do
                        losetup -d $l
                done
                ;;
        NetBSD)
                vnd=`vnconfig -l | \
                     awk '!/not in use/{printf("%s%s:%d ", $1, $2, $5);}'`
                for l in ${vnd} ; do
                        dev=${l%%:*}
                        tmp=${l#*:}
                        fs=${tmp%%:*}
                        inode=${tmp#*:}
                        file=`find -x ${fs} -inum ${inode} -print -exit`
                        echo ${file} | grep "$B0/" && \
                            LOOPDEVICES="${LOOPDEVICES} $dev"
                done
                for l in $LOOPDEVICES;
                do
                        vnconfig -u $l
                done
                ;;
        *)
                echo "`uname -s` loopback device supportmissing"
                ;;
        esac

        if [ -n "${GLUSTERD_WORKDIR}" ] ; then
            rm -rf $GLUSTERD_WORKDIR/* $B0/* /etc/glusterd/*;
        fi

        # unmount all stale mounts from /tmp, This is a temporary work around
        # till the stale mount in /tmp is found.
        case `uname -s` in
        Linux)
                flag="-l"
                ;;
        NetBSD|FreeBSD|Darwin)
                flag="-f"
                ;;
        *)
                flag=""
                ;;
        esac
        umount $flag /tmp/mnt* 2>/dev/null
        umount $flag $M0 2>/dev/null || umount -f $M0 2>/dev/null || true;
        umount $flag $M1 2>/dev/null || umount -f $M1 2>/dev/null || true;
        umount $flag $N0 2>/dev/null || umount -f $N0 2>/dev/null || true;
        umount $flag $N1 2>/dev/null || umount -f $N1 2>/dev/null || true;

        rm -rf $WORKDIRS
        leftover=""
        for d in $WORKDIRS ; do
                if test -d $d ; then
                       leftover="$leftover $d"
                fi
        done
        if [ "x$leftover" != "x" ] ; then
                echo "Aborting."
                echo
                echo "$d could not be deleted, here are the left over items"
                for d in $leftover; do
                        find $d -exec ls -ld {} \;
                done
                echo
                echo "Please correct the problem and try again."
                echo
                return 1;
        fi >&2
        mkdir -p $WORKDIRS
}

function volinfo_field()
{
    local vol=$1;
    local field=$2;

    $CLI volume info $vol | grep "^$field: " | sed 's/.*: //';
}

function cleanup_tester ()
{
    local exe=$1
    rm -f $exe
}

function build_tester ()
{
    local cfile=$1
    local fname=$(basename "$cfile")
    local ext="${fname##*.}"
    local execname="${fname%.*}"
    shift
    local cflags=$*
    $CC -g -o $(dirname $cfile)/$execname $cfile $cflags
}

function process_leak_count ()
{
    local pid=$1;
    return $(ls -lh /proc/$pid/fd | grep "(deleted)"| wc -l)
}

which truncate > /dev/null || {
  truncate() {
    local nocreate=0
    local ioblocks=0
    local fileref=""
    local newsize=""

    args=`getopt xor:s: $*`
    if [ $? -ne 0 ]; then
      echo 'Usage: truncate [-co](-r file | -s size) file ...'
      exit 2
    fi
    set -- $args
    while [ $# -gt 0 ]; do
      case "$1" in
      -c)
        nocreate=1;
        ;;
      -o)
        ioblocks=1;
        echo "Unimplemented -o option"
        exit 2
        ;;
      -r)
        fileref=$2;
        shift;
        ;;
      -s)
        newsize=$2;
        shift;
        ;;
      --)
        shift;
        break;
        ;;
      *)
        echo 'Usage: truncate [-co](-r file | -s size) file ...'
        exit 2;
        ;;
      esac
      shift
    done

    if [ "x$newsize" = "x" -a "x$fileref" = "x" ] ; then
      echo 'Usage: truncate [-co](-r file | -s size) file ...'
      exit 2;
    fi

    if [ "x$newsize" != "x" -a "x$fileref" != "x" ] ; then
      echo 'Usage: truncate [-co](-r file | -s size) file ...'
      exit 2;
    fi

    if [ "x$newsize" != "x" ] ; then
      echo $newsize | grep -q '^[-_<>%/]' && {
        echo "Unimplemented prefix in ${newsize}"
        exit 2;
      }

      echo $newsize | egrep -q '[TPEZY]B?$' && {
        echo "Unit not implemented for ${newsize}"
        exit 2;
      }

      case $newsize in
      *KB)
        newsize=$(( ${newsize/KB/} * 1000 ))
        ;;
      *K)
        newsize=$(( ${newsize/K/} * 1024 ))
        ;;
      *MB)
        newsize=$(( ${newsize/MB/} * 1000 * 1000 ))
        ;;
      *M)
        newsize=$(( ${newsize/M/} * 1024 * 1024 ))
        ;;
      *GB)
        newsize=$(( ${newsize/GB/} * 1000 * 1000 * 1000 ))
        ;;
      *G)
        newsize=$(( ${newsize/G/} * 1024 * 1024 * 1024 ))
        ;;
      esac

    fi

    if [ "x$fileref" != "x" ] ; then
       if [ ! -f $fileref ] ; then
         echo "File does not exists: ${fileref}"
         exit 2;
       fi
       newsize=`ls -l ${fileref}|awk '{print $5}'`
    fi

    if [ $# -eq 0 ]; then
      echo 'Usage: truncate [-co](-r file | -s size) file ...'
      exit 2;
    fi

    for f in $* ; do
      if [ "x$nocreate" = "x1" -a ! -f $f ] ; then
        continue;
      fi

      dd bs=1 seek=$newsize if=/dev/null of=$f msgfmt=quiet
    done
  }
}

which md5sum > /dev/null || {
  md5sum() {
    for f in $* ; do
      md5 $f | awk -F'[() ]' '{printf("%s  %s\n", $6, $3)}'
    done
  }
}

which setfattr > /dev/null || {
  setfattr() {
    $PYTHON setfattr.py $@
  }
}

which getfattr > /dev/null || {
  getfattr() {
    $PYTHON getfattr.py $@
  }
}

which sha1sum > /dev/null || {
  sha1sum() {
  case $OSTYPE in
  Darwin)
    for f in $* ; do
      openssl sha1 $f | awk -F'[() ]' '{printf("%s %s\n", $4, $2)}'
    done
    ;;
  NetBSD | FreeBSD)
    for f in $* ; do
      sha1 $f | awk -F'[() ]' '{printf("%s  %s\n", $6, $3)}'
    done
    ;;
  esac
  }
}

userdel --help 2>/dev/null | grep -q -- '--force' || {
  userdel() {
    if [ "x$1" = "x--force" ]; then
      user=$2
    else
      user=$1
    fi
    eval "$( which userdel ) $user"
  }
}

useradd --help 2>/dev/null | grep -q -- '--no-create-home' || {
  useradd() {
    # Just remove -M (do not create home) which is the default
    # other options are identical
    args=`echo $*|sed 's/-M//'`
    eval "$( which useradd ) $args"
  }
}

userdel --help 2>/dev/null | grep -q -- '--force' || {
  userdel() {
    if [ "x$1" = "x--force" ]; then
      user=$2
    else
      user=$1
    fi
    eval "$( which userdel ) $user"
  }
}

useradd --help 2>/dev/null | grep -q -- '--no-create-home' || {
  useradd() {
    # Just remove -M (do not create home) which is the default
    # other options are identical
    args=`echo $*|sed 's/-M//'`
    eval "$( which useradd ) $args"
  }
}

alias EXPECT='_EXPECT $LINENO'
alias EXPECT_NOT='_EXPECT_NOT $LINENO'
alias TEST='_TEST $LINENO'
alias EXPECT_WITHIN='_EXPECT_WITHIN $LINENO'
alias EXPECT_KEYWORD='_EXPECT_KEYWORD $LINENO'
alias TEST_IN_LOOP='_TEST_IN_LOOP $LINENO'
shopt -s expand_aliases

if [ x"$OSTYPE" = x"Linux" ]; then
        alias dd="dd status=none"
elif [ x"$OSTYPE" = x"NetBSD" ]; then
        alias dd="dd msgfmt=quiet"
fi
# MacOS doesn't seem to support either option.  Doing nothing at all is
# probably the safest option there and on anything we don't recognize, but
# if you want to reduce the noise level and know the correct option for
# your favorite platform please feel free to add it here.

function SETUP_LOOP ()
{
  if [ $# != 1 ] ; then
    echo "SETUP_LOOP usage" >&2
    return 1;
  fi

  backend=$1

  case ${OSTYPE} in
  Linux)
    losetup --find --show ${backend}
    ;;
  NetBSD)
    vnd=`vnconfig -l|awk -F: '/not in use/{print $1; exit}'`
    if [ "x${vnd}" = "x" ] ; then
      echo "no more vnd" >&2
      return 1;
    fi
    vnconfig ${vnd} ${backend}
    echo ${vnd}
    ;;
  *)
    echo "Please define SETUP_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

function MKFS_LOOP ()
{
  args=`getopt i: $*`
  if [ $? -ne 0 ] ; then
    echo "MKFS_LOOP usage" >&2
    return 1;
  fi
  set -- ${args}

  isize=""
  while test $# -gt 0; do
    case "$1" in
    -i)         isize=$2; shift ;;
    --)         shift; break ;;
    esac
    shift
  done

  dev=$1

  case ${OSTYPE} in
  Linux)
    test "x${isize}" != "x" && isize="-i size=${isize}"
    mkfs.xfs  -f ${isize} ${dev}
    ;;
  NetBSD)
    test "x${isize}" != "x" && isize="-i ${isize}"

    echo ${dev} | grep -q '^vnd'
    if [ $? -ne 0 ] ; then
      vnd=`vnconfig -l|awk -F: '/not in use/{print $1; exit}'`
      if [ "x${vnd}" = "x" ] ; then
        echo "no more vnd" >&2
        return 1;
      fi
      vnconfig ${vnd} ${dev}
    else
      vnd=${dev}
    fi
    newfs ${isize} /dev/r${vnd}a
    ;;
  *)
    echo "Please define MKFS_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

# usage: log_newer timestamp "string"
# search in glusterfs logs for "string" logged after timestamp seconds
# since the Epoch (usually obtained by date +%s)
log_newer()
{
        ts=$1
        msg=$2
        logdir=`$CLI --print-logdir`

        IFS="["
        for date in `grep -hr "$msg" $logdir | awk -F '[\]]' '{print $1}'` ; do
                if [ `date -d "$date" +%s` -gt $ts ] ; then
                        return 0;
                fi
        done 2>/dev/null
        return 1
}

function MOUNT_LOOP ()
{
  if [ $# != 2 ] ; then
    echo "MOUNT_LOOP usage" >&2
    return 1;
  fi

  dev=$1
  target=$2

  case ${OSTYPE} in
  Linux)
    echo ${dev} | grep -q '^/dev/loop'
    if [ $? -eq 0 ] ; then
      mount -t xfs  ${dev} ${target}
    else
      mount -o loop  ${dev} ${target}
    fi
    ;;
  NetBSD)
    echo ${dev} | grep -q '^vnd'
    if [ $? -ne 0 ] ; then
      ino=`/usr/bin/stat -f %i ${dev}`
      dev=`vnconfig -l | awk -v ino=${ino} -F'[: ]*' '($5 == ino) {print $1}'`
    fi

    mount /dev/${dev}a ${target} >&2
    if [ $? -ne 0 ] ; then
      echo "failed to mount  /dev/${dev}a on  ${target}" >&2
      return 1;
    fi

    mkdir -p ${target}/.attribute/system  ${target}/.attribute/user
    mount -u -o extattr ${target} >&2

    ;;
  *)
    echo "Please define MOUNT_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

function UMOUNT_LOOP ()
{
  case ${OSTYPE} in
  Linux)
    force_umount $*
    ;;
  NetBSD)
    for target in $* ; do
      dev=`mount | awk -v target=${target} '($3 == target) {print $1}'`
      force_umount ${target}
      echo ${dev} | grep -q '^/dev/vnd'
      if [ $? -eq 0 ] ; then
        dev=`echo ${dev} | sed 's|^/dev/||; s|a$||'`
        vnconfig -u ${dev}
      else
        ino=`/usr/bin/stat -f %i ${dev}`
        dev=`vnconfig -l | awk -v ino=${ino} -F'[: ]*' '($5 == ino) {print $1}'`
        if [ "x${dev}" != "x" ] ; then
          vnconfig -u ${dev}
        fi
      fi
    done
    ;;
  *)
    echo "Please define UMOUNT_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

function SETUP_LOOP ()
{
  if [ $# != 1 ] ; then
    echo "SETUP_LOOP usage" >&2
    return 1;
  fi

  backend=$1

  case ${OSTYPE} in
  Linux)
    losetup --find --show ${backend}
    ;;
  NetBSD)
    vnd=`vnconfig -l|awk -F: '/not in use/{print $1; exit}'`
    if [ "x${vnd}" = "x" ] ; then
      echo "no more vnd" >&2
      return 1;
    fi
    vnconfig ${vnd} ${backend}
    echo ${vnd}
    ;;
  *)
    echo "Please define SETUP_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

function MKFS_LOOP ()
{
  args=`getopt i: $*`
  if [ $? -ne 0 ] ; then
    echo "MKFS_LOOP usage" >&2
    return 1;
  fi
  set -- ${args}

  isize=""
  while test $# -gt 0; do
    case "$1" in
    -i)         isize=$2; shift ;;
    --)         shift; break ;;
    esac
    shift
  done

  dev=$1

  case ${OSTYPE} in
  Linux)
    test "x${isize}" != "x" && isize="-i size=${isize}"
    mkfs.xfs  -f ${isize} ${dev}
    ;;
  NetBSD)
    test "x${isize}" != "x" && isize="-i ${isize}"

    echo ${dev} | grep -q '^vnd'
    if [ $? -ne 0 ] ; then
      vnd=`vnconfig -l|awk -F: '/not in use/{print $1; exit}'`
      if [ "x${vnd}" = "x" ] ; then
        echo "no more vnd" >&2
        return 1;
      fi
      vnconfig ${vnd} ${dev}
    else
      vnd=${dev}
    fi
    newfs ${isize} /dev/r${vnd}a
    ;;
  *)
    echo "Please define MKFS_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

function MOUNT_LOOP ()
{
  if [ $# != 2 ] ; then
    echo "MOUNT_LOOP usage" >&2
    return 1;
  fi

  dev=$1
  target=$2

  case ${OSTYPE} in
  Linux)
    echo ${dev} | grep -q '^/dev/loop'
    if [ $? -eq 0 ] ; then
      mount -t xfs  ${dev} ${target}
    else
      mount -o loop  ${dev} ${target}
    fi
    ;;
  NetBSD)
    echo ${dev} | grep -q '^vnd'
    if [ $? -ne 0 ] ; then
      ino=`/usr/bin/stat -f %i ${dev}`
      dev=`vnconfig -l | awk -v ino=${ino} -F'[: ]*' '($5 == ino) {print $1}'`
    fi

    mount /dev/${dev}a ${target} >&2
    if [ $? -ne 0 ] ; then
      echo "failed to mount  /dev/${dev}a on  ${target}" >&2
      return 1;
    fi

    mkdir -p ${target}/.attribute/system  ${target}/.attribute/user
    mount -u -o extattr ${target} >&2

    ;;
  *)
    echo "Please define MOUNT_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

function UMOUNT_LOOP ()
{
  case ${OSTYPE} in
  Linux)
    force_umount $*
    ;;
  NetBSD)
    for target in $* ; do
      dev=`mount | awk -v target=${target} '($3 == target) {print $1}'`
      force_umount ${target}
      echo ${dev} | grep -q '^/dev/vnd'
      if [ $? -eq 0 ] ; then
        dev=`echo ${dev} | sed 's|^/dev/||; s|a$||'`
        vnconfig -u ${dev}
      else
        ino=`/usr/bin/stat -f %i ${dev}`
        dev=`vnconfig -l | awk -v ino=${ino} -F'[: ]*' '($5 == ino) {print $1}'`
        if [ "x${dev}" != "x" ] ; then
          vnconfig -u ${dev}
        fi
      fi
    done
    ;;
  *)
    echo "Please define UMOUNT_LOOP for ${OSTYPE} in include.rc" >&2
    return 1;
    ;;
  esac
}

function STAT()
{
        stat $1
        echo $?
}