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path: root/tests/qemu-iotests/common.config
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#!/bin/bash
#
# Copyright (C) 2009 Red Hat, Inc.
# Copyright (c) 2000-2003,2006 Silicon Graphics, Inc.  All Rights Reserved.
#
# 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.
#
# This program is distributed in the hope that it would 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, see <http://www.gnu.org/licenses/>.
#
#
# setup and check for config parameters, and in particular
#
# EMAIL -           email of the script runner.
# TEST_DIR -        scratch test directory
#
# - These can be added to $HOST_CONFIG_DIR (witch default to ./config)
#   below or a separate local configuration file can be used (using
#   the HOST_OPTIONS variable).
# - This script is shared by the stress test system and the auto-qa
#   system (includes both regression test and benchmark components).
# - this script shouldn't make any assertions about filesystem
#   validity or mountedness.
#

# all tests should use a common language setting to prevent golden
# output mismatches.
export LANG=C

PATH=".:$PATH"

HOST=`hostname -s 2> /dev/null`
HOSTOS=`uname -s`

EMAIL=root@localhost    # where auto-qa will send its status messages
export HOST_OPTIONS=${HOST_OPTIONS:=local.config}
export CHECK_OPTIONS=${CHECK_OPTIONS:="-g auto"}
export PWD=`pwd`

export _QEMU_HANDLE=0

# $1 = prog to look for, $2* = default pathnames if not found in $PATH
set_prog_path()
{
    p=`command -v $1 2> /dev/null`
    if [ -n "$p" -a -x "$p" ]; then
        echo $p
        return 0
    fi
    p=$1

    shift
    for f; do
        if [ -x $f ]; then
            echo $f
            return 0
        fi
    done

    echo ""
    return 1
}

_fatal()
{
    echo "$*"
    status=1
    exit 1
}

export PERL_PROG="`set_prog_path perl`"
[ "$PERL_PROG" = "" ] && _fatal "perl not found"

export AWK_PROG="`set_prog_path awk`"
[ "$AWK_PROG" = "" ] && _fatal "awk not found"

export SED_PROG="`set_prog_path sed`"
[ "$SED_PROG" = "" ] && _fatal "sed not found"

export BC_PROG="`set_prog_path bc`"
[ "$BC_PROG" = "" ] && _fatal "bc not found"

export PS_ALL_FLAGS="-ef"

if [ -z "$QEMU_PROG" ]; then
    export QEMU_PROG="`set_prog_path qemu`"
fi

if [ -z "$QEMU_IMG_PROG" ]; then
    export QEMU_IMG_PROG="`set_prog_path qemu-img`"
fi

if [ -z "$QEMU_IO_PROG" ]; then
    export QEMU_IO_PROG="`set_prog_path qemu-io`"
fi

if [ -z "$QEMU_NBD_PROG" ]; then
    export QEMU_NBD_PROG="`set_prog_path qemu-nbd`"
fi

_qemu_wrapper()
{
    (
        if [ -n "${QEMU_NEED_PID}" ]; then
            echo $BASHPID > "${TEST_DIR}/qemu-${_QEMU_HANDLE}.pid"
        fi
        exec "$QEMU_PROG" $QEMU_OPTIONS "$@"
    )
}

_qemu_img_wrapper()
{
    (exec "$QEMU_IMG_PROG" $QEMU_IMG_OPTIONS "$@")
}

_qemu_io_wrapper()
{
    local VALGRIND_LOGFILE=/tmp/$$.valgrind
    local RETVAL
    (
        if [ "${VALGRIND_QEMU}" == "y" ]; then
            exec valgrind --log-file="${VALGRIND_LOGFILE}" --error-exitcode=99 "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@"
        else
            exec "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@"
        fi
    )
    RETVAL=$?
    if [ "${VALGRIND_QEMU}" == "y" ]; then
        if [ $RETVAL == 99 ]; then
            cat "${VALGRIND_LOGFILE}"
        fi
        rm -f "${VALGRIND_LOGFILE}"
    fi
    (exit $RETVAL)
}

_qemu_nbd_wrapper()
{
    (
        echo $BASHPID > "${TEST_DIR}/qemu-nbd.pid"
        exec "$QEMU_NBD_PROG" $QEMU_NBD_OPTIONS "$@"
    )
}

export QEMU=_qemu_wrapper
export QEMU_IMG=_qemu_img_wrapper
export QEMU_IO=_qemu_io_wrapper
export QEMU_NBD=_qemu_nbd_wrapper

default_machine=$($QEMU -machine help | sed -n '/(default)/ s/ .*//p')
default_alias_machine=$($QEMU -machine help | \
   sed -n "/(alias of $default_machine)/ { s/ .*//p; q; }")
if [[ "$default_alias_machine" ]]; then
    default_machine="$default_alias_machine"
fi

export QEMU_DEFAULT_MACHINE="$default_machine"

[ -f /etc/qemu-iotest.config ]       && . /etc/qemu-iotest.config

if [ -z "$TEST_DIR" ]; then
        TEST_DIR=`pwd`/scratch
fi

if [ ! -e "$TEST_DIR" ]; then
        mkdir "$TEST_DIR"
fi

if [ ! -d "$TEST_DIR" ]; then
    echo "common.config: Error: \$TEST_DIR ($TEST_DIR) is not a directory"
    exit 1
fi

export TEST_DIR

if [ -z "$SAMPLE_IMG_DIR" ]; then
        SAMPLE_IMG_DIR="$source_iotests/sample_images"
fi

if [ ! -d "$SAMPLE_IMG_DIR" ]; then
    echo "common.config: Error: \$SAMPLE_IMG_DIR ($SAMPLE_IMG_DIR) is not a directory"
    exit 1
fi

export SAMPLE_IMG_DIR

_readlink()
{
    if [ $# -ne 1 ]; then
        echo "Usage: _readlink filename" 1>&2
        exit 1
    fi

    perl -e "\$in=\"$1\";" -e '
    $lnk = readlink($in);
    if ($lnk =~ m!^/.*!) {
        print "$lnk\n";
    }
    else {
        chomp($dir = `dirname $in`);
        print "$dir/$lnk\n";
    }'
}

# make sure this script returns success
true