#!/bin/sh
################################################################################
##                                                                            ##
## Copyright (c) International Business Machines  Corp., 2001                 ##
##                                                                            ##
## 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; either version 2 of the License, or          ##
## (at your option) any later version.                                        ##
##                                                                            ##
## 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA    ##
##                                                                            ##
################################################################################
# File: runltp
#
# Description:  This script can be used to the tests in the LTP test suite
#
# Authors:      Manoj Iyer - manjo@mail.utexas.edu
#               Robbe Williamson - robbiew@us.ibm.com
#               
# History:      Oct 07 2003 - Modified - Manoj Iyer
#               - use functions
#               - clean up on script exit
#               - error checking etc.
#                
#               Oct 08 2003 - Modified - Manoj Iyer
#               - fixed bug in creating results directory
#               - all checks should be enlclosed in " " to avoid bash error
#               - exit with error if pan is not found in pan directory
#
#               Jul 22 2007 - Modified - Ricardo Salveti de Araujo
#               - added support to put more then one file at CMDLINE (-f)
#               - added a new option, that the user can pass the address of
#               the command file, and it'll use wget to get it (-w)
#               - now -s does the grep at the selected command files (default,
#               -f or -w)
#
#               Jul 23 2007 - Modified - Ricardo Salveti de Araujo
#               - added flag to get the command file that has all failed tests
#
#               Sep 11 2007 - Modified - Subrata Modak
#               - added option to create Failed File if it is not an absolute path
#               - added option to create Output File if it is not an absolute path
#               - added option to create Failed File compulsory, even if user has not mentioned it
#
#               Sep 14 2007 - Modified - Ricardo Salveti de Araujo
#               - cleaning and removing duplicated code
#
#               Oct 27 2007 - Modified - Ricardo Salveti de Araujo and Subrata Modak
#               - better ways to integrate "ltp/tools/genload/stress" with "ltp/runltp"
#               Nov 24 2007 - Modified - Subrata Modak
#               - Added a new option to generate output in HTML format also. Also retaining
#                 the original test format
#               Nov 28 2007 - Modified - Subrata Modak
#               - Added a new option to mail back LTP reports
#               May 19 2008 - Modified - Subrata Modak
#               - Added capability for default Log file generation
#
#################################################################################


setup()
{
    cd `dirname $0` || \
    {
        echo "FATAL: unable to change directory to $(dirname $0)"
        exit 1
    }
    export LTPROOT=${PWD}
    export TMPBASE="/tmp"
    export PATH="${PATH}:${LTPROOT}/testcases/bin"

    [ -d $LTPROOT/testcases/bin ] ||
    {
        echo "FATAL: Test suite not installed correctly"
        echo "INFO: as root user type 'make ; make install'"
        exit 1
    }

    [ -e $LTPROOT/pan/pan ] ||
    {
        echo "FATAL: Test suite driver 'pan' not found"
        echo "INFO: as root user type 'make ; make install'"
        exit 1
    }
}

version_of_ltp()
{
    head -n 1  $LTPROOT/ChangeLog
    exit 0
}

usage() 
{
    cat <<-EOF >&2

    usage: ./${0##*/} [ -a EMAIL_TO ] [ -c NUM_PROCS ] [ -C FAILCMDFILE ] [ -d TMPDIR ]
    [ -D NUM_PROCS,NUM_FILES,NUM_BYTES,CLEAN_FLAG ] -e [ -f CMDFILES(,...) ] [ -g HTMLFILE]
    [ -i NUM_PROCS ] [ -l LOGFILE ] [ -m NUM_PROCS,CHUNKS,BYTES,HANGUP_FLAG ] 
    -N -n [ -o OUTPUTFILE ] -p -q [ -r LTPROOT ] [ -s PATTERN ] [ -t DURATION ]
    -v [ -w CMDFILEADDR ] [ -x INSTANCES ] [ -b DEVICE ] [-B DEVICE_FS_TYPE]
                
    -a EMAIL_TO     EMAIL all your Reports to this E-mail Address
    -c NUM_PROCS    Run LTP under additional background CPU load
                    [NUM_PROCS = no. of processes creating the CPU Load by spinning over sqrt()
                                 (Defaults to 1 when value)]
    -C FAILCMDFILE  Command file with all failed test cases.
    -d TMPDIR       Directory where temporary files will be created.
    -D NUM_PROCS,NUM_FILES,NUM_BYTES,CLEAN_FLAG
                    Run LTP under additional background Load on Secondary Storage (Seperate by comma)
                    [NUM_PROCS   = no. of processes creating Storage Load by spinning over write()]
                    [NUM_FILES   = Write() to these many files (Defaults to 1 when value 0 or undefined)]
                    [NUM_BYTES   = write these many bytes (defaults to 1GB, when value 0 or undefined)]
                    [CLEAN_FLAG  = unlink file to which random data written, when value 1]
    -e              Prints the date of the current LTP release
    -f CMDFILES     Execute user defined list of testcases (separate with ',')
    -g HTMLFILE     Create an additional HTML output format
    -h              Help. Prints all available options.
    -i NUM_PROCS    Run LTP under additional background Load on IO Bus
                    [NUM_PROCS   = no. of processes creating IO Bus Load by spinning over sync()]
    -l LOGFILE      Log results of test in a logfile.
    -m NUM_PROCS,CHUNKS,BYTES,HANGUP_FLAG
                    Run LTP under additional background Load on Main memory (Seperate by comma)
                    [NUM_PROCS   = no. of processes creating main Memory Load by spinning over malloc()]
                    [CHUNKS      = malloc these many chunks (default is 1 when value 0 or undefined)]
                    [BYTES       = malloc CHUNKS of BYTES bytes (default is 256MB when value 0 or undefined) ]
                    [HANGUP_FLAG = hang in a sleep loop after memory allocated, when value 1]
    -N              Run all the networking tests. 
    -n              Run LTP with network traffic in background.
    -o OUTPUTFILE   Redirect test output to a file.
    -p              Human readable format logfiles. 
    -q              Print less verbose output to screen.
    -r LTPROOT      Fully qualified path where testsuite is installed.
    -s PATTERN      Only run test cases which match PATTERN.
    -t DURATION     Execute the testsuite for given duration. Examples:
                      -t 60s = 60 seconds
                      -t 45m = 45 minutes
                      -t 24h = 24 hours
                      -t 2d  = 2 days
    -T REPETITION   Execute the testsuite for REPETITION no. of times
    -v              Print more verbose output to screen.                   
    -w CMDFILEADDR  Uses wget to get the user's list of testcases.
    -x INSTANCES    Run multiple instances of this testsuite.
    -b DEVICE       Some tests require an unmounted block device
                    to run correctly.
    -B DEVICE_FS_TYPE The file system of test block devices.


    example: ./${0##*/} -c 2 -i 2 -m 2,4,10240,1 -D 2,10,10240,1 -p -q  -l /tmp/result-log.$$ -o /tmp/result-output.$$ -C /tmp/result-failed.$$ -d ${PWD}


	EOF
exit 0
}

main()
{
    local CMDFILES=""
    local PRETTY_PRT=""
    local ALT_DIR_OUT=0
    local ALT_DIR_RES=0
    local ALT_HTML_OUT=0
    local ALT_EMAIL_OUT=0
    local RUN_NETEST=0
    local RUN_REPEATED=0
    local QUIET_MODE=""
    local VERBOSE_MODE=""
    local NETPIPE=0
    local GENLOAD=0
    local MEMSIZE=0
    local DURATION=""
    local CMDFILEADDR=""
    local FAILCMDFILE=""
    local LOGFILE_NAME=""
    local LOGFILE=""
    local OUTPUTFILE_NAME=""
    local OUTPUTFILE=""
    local HTMLFILE_NAME=""
    local HTMLFILE=""
    local EMAIL_TO=""
    local SCENFILES=""
    local TAG_RESTRICT_STRING=""
    local PAN_COMMAND=""
    local DEFAULT_FILE_NAME_GENERATION_TIME=`date +"%Y_%b_%d-%Hh_%Mm_%Ss"`
    version_date=`head -n 1 $LTPROOT/ChangeLog`

    while getopts a:c:C:d:D:f:ehi:g:l:m:Nno:pqr:s:t:T:vw:x:b:B: arg
    do  case $arg in
        a)  EMAIL_TO=$OPTARG
            ALT_EMAIL_OUT=1;;
        c)       
            NUM_PROCS=$(($OPTARG))
            if   [ "$NUM_PROCS" -eq 0 ]; then
                # User Did not Define the Value ,or, User Defined Zero,
                # hence, prevent from creating infinite processes
                NUM_PROCS=1
            fi
            $LTPROOT/testcases/bin/genload --cpu $NUM_PROCS >/dev/null 2>&1 &
            GENLOAD=1 ;;

        C)  
            case $OPTARG in
            /*)
                FAILCMDFILE="-C $OPTARG" ;;
            *)    
                FAILCMDFILE="-C $LTPROOT/output/$OPTARG"
                ALT_DIR_OUT=1 ;;
            esac ;;
                   
        d)  # convert the user path to absolute path.
            export TMPBASE=`cd \`dirname ${OPTARG}\`; pwd`/`basename ${OPTARG}` ;;

        D)  NUM_PROCS=1; NUM_FILES=1; NUM_BYTES=$((1024 * 1024 * 1024)); CLEAN_FLAG=0
            ARGUMENT_LIST=$OPTARG
            TOTAL_ARGUMENTS=1                                             # Initial Assume
            for ARGUMENT in `echo "$ARGUMENT_LIST" | sed 's/,/\n/g'`      # Store all value in a Loop
            do
                case $TOTAL_ARGUMENTS in
                    1) NUM_PROCS="$ARGUMENT" ;;
                    2) NUM_FILES="$ARGUMENT" ;;
                    3) NUM_BYTES="$ARGUMENT" ;;
                    4) CLEAN_FLAG="$ARGUMENT" ;;
                esac
                TOTAL_ARGUMENTS=`expr $TOTAL_ARGUMENTS + 1`
            done
            # just to get the default values if the user passed 0
            if [ "$NUM_PROCS" -eq 0 ]; then
                NUM_PROCS=1
            fi
            if [ "$NUM_FILES" -eq 0 ]; then
                NUM_FILES=1
            fi
            if [ "$NUM_BYTES" -eq 0 ]; then
                NUM_BYTES=$((1024 * 1024 * 1024))
            fi
            if [ "$CLEAN_FLAG" -ne 1 ]; then
                CLEAN_FLAG=0
            fi
            if [ "$CLEAN_FLAG" -eq 1 ]; then
                # Do not unlink file in this case
                $LTPROOT/testcases/bin/genload --hdd $NUM_PROCS --hdd-files \
                    $NUM_FILES --hdd-bytes $NUM_BYTES >/dev/null 2>&1 &
            else
                # Cleanup otherwise
                $LTPROOT/testcases/bin/genload --hdd $NUM_PROCS --hdd-files \
                    $NUM_FILES --hdd-bytes $NUM_BYTES --hdd-noclean >/dev/null 2>&1 &
            fi
            GENLOAD=1;;

        e)  # Print out the version of LTP
            version_of_ltp
	    ;;
        f)  # Execute user defined set of testcases.
            # Can be more then one file, just separate it with ',', like:
            # -f nfs,commands,/tmp/testfile
            CMDFILES=$OPTARG;;
        g)  HTMLFILE_NAME="$OPTARG"
            case $OPTARG in
            /*)
                HTMLFILE="$OPTARG";;
            *)
                HTMLFILE="$LTPROOT/output/$OPTARG";;
            esac
            ALT_DIR_OUT=1 
            ALT_HTML_OUT=1;;
        h)  usage;;
        
        i)
            NUM_PROCS=$(($OPTARG))
            if   [ "$NUM_PROCS" -eq 0 ]; then
                # User Did not Define the Value ,or, User Defined Zero,
                # hence, prevent from creating infinite processes
                NUM_PROCS=1
            fi
            $LTPROOT/testcases/bin/genload --io $NUM_PROCS >/dev/null 2>&1 &
            GENLOAD=1 ;;
    
        l)      
            LOGFILE_NAME="$OPTARG"
            case $OPTARG in
            /*)
                LOGFILE="-l $OPTARG" ;;
            *)    
                LOGFILE="-l $LTPROOT/results/$OPTARG"
                ALT_DIR_RES=1 ;;
            esac ;;
    
        m)  NUM_PROCS=1; CHUNKS=1; BYTES=$((256 * 1024 * 1024)); HANGUP_FLAG=0
            ARGUMENT_LIST=$OPTARG
            TOTAL_ARGUMENTS=1                                             # Initial Assume
            for ARGUMENT in `echo "$ARGUMENT_LIST" | sed 's/,/\n/g'`      # Store all value in a Loop
            do
                case $TOTAL_ARGUMENTS in
                    1) NUM_PROCS="$ARGUMENT" ;;
                    2) CHUNKS="$ARGUMENT" ;;
                    3) BYTES="$ARGUMENT" ;;
                    4) HANGUP_FLAG="$ARGUMENT" ;;
                esac
                TOTAL_ARGUMENTS=`expr $TOTAL_ARGUMENTS + 1`
            done
            # just to get the default values if the user passed 0
            if [ "$NUM_PROCS" -eq 0 ]; then
                NUM_PROCS=1
            fi
            if [ "$CHUNKS" -eq 0 ]; then
                CHUNKS=1
            fi
            if [ "$BYTES" -eq 0 ]; then
                BYTES=$((256 * 1024 * 1024))
            fi
            if [ "$HANGUP_FLAG" -ne 1 ]; then
                HANGUP_FLAG=0
            fi
            if [ "$HANGUP_FLAG" -eq 1 ]; then
                # Hang in a Sleep loop after memory allocated
                $LTPROOT/testcases/bin/genload --vm $NUM_PROCS --vm-chunks \
                    $CHUNKS --vm-bytes $BYTES --vm-hang >/dev/null 2>&1 &
            else
                # Otherwise Do not Hangup
                $LTPROOT/testcases/bin/genload --vm $NUM_PROCS --vm-chunks \
                    $CHUNKS --vm-bytes $BYTES >/dev/null 2>&1 &
            fi
            GENLOAD=1;;
    
        N)  RUN_NETEST=1;;
    
        n)  
            $LTPROOT/testcases/bin/netpipe.sh
            NETPIPE=1;;
    
        o)  OUTPUTFILE_NAME="$OPTARG"
            case $OPTARG in
            /*)
                OUTPUTFILE="-o $OPTARG";;
            *)
                OUTPUTFILE="-o $LTPROOT/output/$OPTARG"
                ALT_DIR_OUT=1 ;;
            esac ;;
    
        p)  PRETTY_PRT=" -p ";;
   
        q)  QUIET_MODE=" -q ";;
    
        r)  LTPROOT=$OPTARG;;
    
        s)  TAG_RESTRICT_STRING=$OPTARG;;
    
        t)  # In case you want to specify the time 
            # to run from the command line 
            # (2m = two minutes, 2h = two hours, etc)
            DURATION="-t $OPTARG" ;;

        T)  # In case you want the testcases to runsequentially RUN_REPEATED times
            RUN_REPEATED=$OPTARG;;

        v)  VERBOSE_MODE=1;;

        w)  CMDFILEADDR=$OPTARG;;
   
        x)  # number of ltp's to run
            cat <<-EOF >&1
            WARNING: The use of -x can cause unpredictable failures, as a
                     result of concurrently running multiple tests designed
                     to be ran exclusively.
                     Pausing for 10 seconds..."
	EOF
            sleep 10 
            INSTANCES="-x $OPTARG";;
        b) DEVICE=$OPTARG;;
        B) DEVICE_FS_TYPE=$OPTARG;;
        \?) usage;;
        esac
    done

    ## It would be nice to create a default log file even if the user has not mentioned
    if [ ! "$LOGFILE" ]; then                                ## User has not mentioned about Log File name
       LOGFILE_NAME=$DEFAULT_FILE_NAME_GENERATION_TIME
       LOGFILE="-l $LTPROOT/results/LTP_RUN_ON-$LOGFILE_NAME.log"
       ALT_DIR_RES=1
       PRETTY_PRT=" -p "
    fi
   
    ## It would be nice if a Failed File is compulsorily created (gives User better Idea of Tests that failed)  

    if [ ! "$FAILCMDFILE" ]; then                            ## User has not mentioned about Failed File name
         ALT_DIR_OUT=1
         if [ ! "$OUTPUTFILE" ]; then		             ## User has not mentioned about Output File name either
            if [ ! "$LOGFILE" ]; then                        ## User has not mentioned about Log File name either
               FAILED_FILE_NAME=$DEFAULT_FILE_NAME_GENERATION_TIME
               FAILCMDFILE="-C $LTPROOT/output/LTP_RUN_ON-$FAILED_FILE_NAME.failed"
            else					     ## User Fortunately wanted a log file,
               FAILED_FILE_NAME=`basename $LOGFILE_NAME`     ## Extract log file name and use it to construct Failed file name
               FAILCMDFILE="-C $LTPROOT/output/LTP_RUN_ON-$FAILED_FILE_NAME.failed"
            fi
         else                                                ## User Fortunately wanted a Output file
               FAILED_FILE_NAME=`basename $OUTPUTFILE_NAME`  ## Extract output file name and use it to construct Failed file name
               FAILCMDFILE="-C $LTPROOT/output/LTP_RUN_ON-$FAILED_FILE_NAME.failed"
         fi
    fi

    if [ "$ALT_HTML_OUT" -eq 1 ] ; then                      ## User wants the HTML version of the output
       QUIET_MODE=""                                         ## Suppressing this guy as it will prevent generation of proper output
                                                             ## which the HTML parser will require
       if [ ! "$OUTPUTFILE" ]; then                          ## User has not mentioned about the Outputfile name, then we need to definitely generate one
          OUTPUTFILE_NAME=$DEFAULT_FILE_NAME_GENERATION_TIME
          OUTPUTFILE="-o $LTPROOT/output/LTP_RUN_ON-$OUTPUTFILE_NAME.output"
          ALT_DIR_OUT=1
          if [ ! "$HTMLFILE" ] ; then                        ## User has not mentioned HTML File name, We need to create one
             HTMLFILE_NAME=`basename $OUTPUTFILE_NAME`
             HTMLFILE="$LTPROOT/output/$HTMLFILE_NAME.html"
          fi
       fi
    fi

    # If we need, create the output directory
    [ "$ALT_DIR_OUT" -eq 1 ] && \
    {
        echo "INFO: creating $LTPROOT/output directory"
        [ ! -d $LTPROOT/output ] && \
        {
           mkdir -p $LTPROOT/output || \
           {
               echo "ERROR: failed to create $LTPROOT/output"
               exit 1
            }
        }
    }
    # If we need, create the results directory
    [ "$ALT_DIR_RES" -eq 1 ] && \
    {
        echo "INFO: creating $LTPROOT/results directory"
        [ ! -d $LTPROOT/results ] && \
        {
           mkdir -p $LTPROOT/results || \
           {
               echo "ERROR: failed to create $LTPROOT/results"
               exit 1
            }
        }
    }

    # Added -m 777 for tests that call tst_tmpdir() and try to 
    #  write to it as user nobody
    mkdir -m 777 -p $TMPBASE || \
    {
        echo "FATAL: Unable to make temporary directory $TMPBASE"
        exit 1
    }
    # use mktemp to create "safe" temporary directories
    export TMPTEMPLATE="${TMPBASE}/ltp-XXXXXXXXXX"
    TMP=`mktemp -d $TMPTEMPLATE` || \
    {
        echo "FATAL: Unable to make temporary directory: $TMP"
        exit 1
    }
    export TMP
    # To be evoked by tst_tmpdir()
    #  write to it as user nobody
    export TMPDIR="/tmp" 

    chmod 777 $TMP || \
    {
      echo "unable to chmod 777 $TMP ... aborting"
        exit 1
    }
    
    cd $TMP || \
    {
      echo "could not cd ${TMP} ... exiting"
      exit 1
    }
    
    ! [ -z $INSTANCES ] && \
    {
	    INSTANCES="$INSTANCES -O ${TMP}"
    }
    
    [ "$RUN_NETEST" -eq 1 ] && \
    {
        [ -z "$RHOST" ] || [ -z "$PASSWD" ] && \
        {
            [ -z "$RHOST" ] && \
            {
                echo \
                "INFO: Enter RHOST = 'name of the remote host machine'"
                echo -n "-> "
                read RHOST
            }

            [ -z "$PASSWD" ] && \
            {
                echo " "
                echo \
                "INFO: Enter PASSWD = 'root passwd of the remote host machine'"
                echo -n "-> "
                read PASSWD
            }
            export RHOST=$RHOST
            export PASSWD=$PASSWD
            echo "WARNING: security of $RHOST may be compromised"
        }
    }
    
    # If user does not provide a command file select a default set of testcases
    # to execute.
    if [ -z "$CMDFILES" ] && [ -z "$CMDFILEADDR" ]
    then
        cat <<-EOF >&1

    INFO: no command files were provided, using default,
          system calls, memory management, IPC, scheduler
          direct io, file system, math and pty tests will 
          now be executed
    
	EOF

        for SCENFILES in ${LTPROOT}/runtest/syscalls                \
                         ${LTPROOT}/runtest/fs                      \
                         ${LTPROOT}/runtest/fsx                     \
                         ${LTPROOT}/runtest/dio                     \
                         ${LTPROOT}/runtest/io                      \
                         ${LTPROOT}/runtest/mm                      \
                         ${LTPROOT}/runtest/ipc                     \
                         ${LTPROOT}/runtest/sched                   \
                         ${LTPROOT}/runtest/math                    \
                         ${LTPROOT}/runtest/nptl                    \
                         ${LTPROOT}/runtest/pty                     \
                         ${LTPROOT}/runtest/containers              \
                         ${LTPROOT}/runtest/fs_bind                 \
                         ${LTPROOT}/runtest/controllers             \
                         ${LTPROOT}/runtest/filecaps                \
                         ${LTPROOT}/runtest/fcntl-locktests         \
                         ${LTPROOT}/runtest/connectors              \
                         ${LTPROOT}/runtest/admin_tools             \
                         ${LTPROOT}/runtest/timers                  \
                         ${LTPROOT}/runtest/power_management_tests  \
                         ${LTPROOT}/runtest/numa                    \
                         ${LTPROOT}/runtest/hugetlb                 \
                         ${LTPROOT}/runtest/commands                \
                         ${LTPROOT}/runtest/hyperthreading
        do
            [ -e "$SCENFILES" ] || \
            {
                echo "FATAL: missing scenario file $SCENFILES"
                exit 1
            }

            cat $SCENFILES >> ${TMP}/alltests || \
            {
                echo "FATAL: unable to create command file"
                exit 1
            }
       done
    fi

    [ -n "$CMDFILES" ] && \
    {
        for SCENFILES in `echo "$CMDFILES" | sed 's/,/\n/g'`
        do
            [ -f "$SCENFILES" ] || SCENFILES="$LTPROOT/runtest/$SCENFILES"
            cat "$SCENFILES" >> ${TMP}/alltests || \
            {
                echo "FATAL: unable to create command file"
                exit 1
            }
        done
    }
    
    [ -n "$CMDFILEADDR" ] && \
    {
        wget -q "${CMDFILEADDR}" -O ${TMP}/wgetcmdfile
        if [ $? -ne 0 ]; then
            echo "FATAL: error while getting the command file with wget (address $CMDFILEADDR)"
            exit 1
        fi
        cat "${TMP}/wgetcmdfile" >> ${TMP}/alltests || \
        {
            echo "FATAL: unable to create command file"
            exit 1
        }
    }

    [ "$RUN_NETEST" -eq 1 ] && \
    {
        for SCENFILES in ${LTPROOT}/runtest/tcp_cmds \
                         ${LTPROOT}/runtest/multicast \
                         ${LTPROOT}/runtest/rpc \
                         ${LTPROOT}/runtest/nfs
        do
            [ -e "$SCENFILES" ] || \
            { 
                echo "FATAL: missing scenario file $SCENFILES"
                exit 1
            }
                         
            cat "$SCENFILES" >> ${TMP}/alltests || \
            {
                echo "FATAL: unable to create command file"
                exit 1
            }
        done
    } 

    # The fsx-linux tests use the SCRATCHDEV environment variable as a location
    # that can be reformatted and run on.  Set SCRATCHDEV if you want to run 
    # these tests.  As a safeguard, this is disabled.
    unset SCRATCHDEV
    [ -n "$SCRATCHDEV" ] && \
    {
         cat ${LTPROOT}/runtest/fsx >> ${TMP}/alltests ||
         {
             echo "FATAL: unable to create  fsx-linux tests command file"
             exit 1
         }
    }

    # If enabled, execute only test cases that match the PATTERN
    if [ -n "$TAG_RESTRICT_STRING" ]
    then
        mv -f ${TMP}/alltests ${TMP}/alltests.orig
	    grep $TAG_RESTRICT_STRING ${TMP}/alltests.orig > ${TMP}/alltests #Not worth checking return codes for this case
    fi
    
    # check for required users and groups
    ${LTPROOT}/IDcheck.sh &>/dev/null || \
    {
        echo "WARNING: required users and groups not present"
        echo "WARNING: some test cases may fail"
    }
       
    # display versions of installed software
    [ -z "$QUIET_MODE" ] && \
    { 
        ${LTPROOT}/ver_linux || \
        {
            echo "WARNING: unable to display versions of software installed"
            exit 1
    }
    }

    if [ -n "$DEVICE" ]; then
        sed -i "s|DEVICE|$DEVICE|"  ${TMP}/alltests
    else
        echo "remove test cases which require the block device."
    echo "You can specified it by oprion -b"
        sed -i "/DEVICE/d"  ${TMP}/alltests
    fi

    if [ $? -ne 0 ]; then
            echo "FATAL: error during prcessing alltests file by sed"
            exit 1
    fi

    if [ -n "$DEVICE" ]; then
        mnt_pnt=`mktemp -d --tmpdir=${TMP} mnt_pnt.XXXXXX`
        if [ -n "$DEVICE_FS_TYPE" ]; then
            mount -t $DEVICE_FS_TYPE $DEVICE $mnt_pnt
        else
            mount $DEVICE $mnt_pnt
        fi

        if [ $? -ne 0 ]; then
            echo "FATAL: can't mount block device $DEVICE."
            exit 1
        fi

        if [ -z "$DEVICE_FS_TYPE" ]; then
            DEVICE_FS_TYPE=`cat /proc/mounts | awk "{if (\\\$1 == \"$DEVICE\") print \\\$3; }"`
            echo "determine file system $DEVICE_FS_TYPE on block device $DEVICE"
        fi

        umount $DEVICE
        if [ $? -ne 0 ]; then
            echo "FATAL: can't umount $DEVICE"
            exit 1
        fi
        rm -rf $mnt_pnt
    fi

    if [ -n "$DEVICE" ]; then
        sed -i "s|DEVICE_FS_TYPE|$DEVICE_FS_TYPE|"  ${TMP}/alltests
    fi

    if [ $? -ne 0 ]; then
        echo "FATAL: error during prcessing alltests file by sed"
        exit 1
    fi

    if [ $RUN_REPEATED -gt 1 ]; then # You need to specify at least more than 1 sequential run, else it runs default
         echo "PAN will run these test cases $RUN_REPEATED times....."
         echo "Test Tags will be Prepended with ITERATION NO.s....."
         inc=1
         sed -e '/^$/ d' -e 's/^[ ,\t]*//' -e '/^#/ d' < ${TMP}/alltests > ${TMP}/alltests.temp ##This removes all newlines, leading spaces, tabs, #
         sed 's/^[0-9,a-z,A-Z]*/'"$inc"'_ITERATION_&/' < ${TMP}/alltests.temp > ${TMP}/alltests ## .temp is kept as Base file
         while [ $inc -lt $RUN_REPEATED ] ; do
               inc=`expr $inc + 1`
               sed 's/^[0-9,a-z,A-Z]*/'"$inc"'_ITERATION_&/' < ${TMP}/alltests.temp >> ${TMP}/alltests #Keep appending with Iteration No.s
         done
    fi

    [ ! -z "$QUIET_MODE" ] && { echo "INFO: Test start time: $(date)" ; }
    PAN_COMMAND="${LTPROOT}/pan/pan $QUIET_MODE -e -S $INSTANCES $DURATION -a $$ \
    -n $$ $PRETTY_PRT -f ${TMP}/alltests $LOGFILE $OUTPUTFILE $FAILCMDFILE"
    if [ ! -z "$VERBOSE_MODE" ] ; then
      echo "COMMAND:    $PAN_COMMAND"
      if [ ! -z "$TAG_RESTRICT_STRING" ] ; then
        echo "INFO: Restricted to $TAG_RESTRICT_STRING"
      fi
    fi
    #$PAN_COMMAND #Duplicated code here, because otherwise if we fail, only "PAN_COMMAND" gets output
    
    ## Display the Output/Log/Failed/HTML file names here
    echo -e "LOG File: \c"
    echo $LOGFILE | cut -b4-

    if [ "$OUTPUTFILE" ]; then
       echo -e "OUTPUT File: \c"
       echo $OUTPUTFILE | cut -b4-
    fi

    echo -e "FAILED COMMAND File: \c"
    echo $FAILCMDFILE | cut -b4-

    if [ "$HTMLFILE" ]; then
       echo "HTML File: $HTMLFILE"
    fi

    echo "Running tests......."
    test_start_time=$(date)
    ${LTPROOT}/pan/pan $QUIET_MODE -e -S $INSTANCES $DURATION -a $$ -n $$ $PRETTY_PRT -f ${TMP}/alltests $LOGFILE $OUTPUTFILE $FAILCMDFILE
     
    if [ $? -eq 0 ]; then
      echo "INFO: pan reported all tests PASS"
      VALUE=0
      export LTP_EXIT_VALUE=0;
    else
      echo "INFO: pan reported some tests FAIL"
      VALUE=1
      export LTP_EXIT_VALUE=1;
    fi
    echo "LTP Version: $version_date"

    if [ "$ALT_HTML_OUT" -eq 1 ] ; then        #User wants the HTML output to be created, it then needs to be generated
       export LTP_VERSION=$version_date
       export TEST_START_TIME=$test_start_time
       export TEST_END_TIME=$(date)
       OUTPUT_DIRECTORY=`echo $OUTPUTFILE | cut -c4-`
       LOGS_DIRECTORY="$LTPROOT/results"
       export TEST_OUTPUT_DIRECTORY="$LTPROOT/output"
       export TEST_LOGS_DIRECTORY=$LOGS_DIRECTORY
       echo "Generating HTML Output.....!!"
       ( perl $LTPROOT/tools/genhtml.pl $LTPROOT/tools/html_report_header.txt test_start test_end test_output execution_status $OUTPUT_DIRECTORY  > $HTMLFILE; )   
       echo "Generated HTML Output.....!!"
       echo "Location: $HTMLFILE";

    fi
 
    if [ "$ALT_EMAIL_OUT" -eq 1 ] ; then                      ## User wants reports to be e-mailed
       if [ [ ! "$HTMLFILE_NAME" ] -o [ ! "$OUTPUTFILE_NAME" ] -o [ ! "$LOGFILE_NAME" ] ] ; then  
          ##User does not have output/logs/html-output, nothing to be mailed in this situation
          echo "Nothing to be mailed here...."
       else
           TAR_FILE_NAME=LTP_RUN_$version_date$DEFAULT_FILE_NAME_GENERATION_TIME.tar
           if [ "$HTMLFILE_NAME" ] ; then                          ## HTML file Exists
              if [ "$ALT_HTML_OUT" -ne 1 ] ; then                  ## The HTML file path is absolute and not $LTPROOT/output
                 mkdir -p $LTPROOT/output                          ## We need to create this Directory
                 cp $HTMLFILE_NAME $LTPROOT/output/
              fi
           fi
           if [ "$OUTPUTFILE_NAME" ] ; then                        ## Output file exists
              if [ "$ALT_DIR_OUT" -ne 1 ] ; then                   ## The Output file path is absolute and not $LTPROOT/output
                 mkdir -p $LTPROOT/output                          ## We need to create this Directory
                 cp $OUTPUTFILE_NAME $LTPROOT/output/
              fi
           fi
           if [ "$LOGFILE_NAME" ] ; then                           ## Log file exists
              if [ "$ALT_DIR_RES" -ne 1 ] ; then                   ## The Log file path is absolute and not $LTPROOT/results
                 mkdir -p $LTPROOT/results                         ## We need to create this Directory
                 cp $LOGFILE_NAME $LTPROOT/results/
              fi
           fi
           if [ -d $LTPROOT/output ] ; then
              tar -cf  ./$TAR_FILE_NAME $LTPROOT/output
              if [ $? -eq 0 ]; then
                 echo "Created TAR File: ./$TAR_FILE_NAME successfully, added $LTPROOT/output"
              else
                 echo "Cannot Create TAR File: ./$TAR_FILE_NAME for adding $LTPROOT/output"
              fi
           fi
           if [ -d $LTPROOT/results ] ; then
              tar -uf ./$TAR_FILE_NAME $LTPROOT/results
              if [ $? -eq 0 ]; then
                 echo "Updated TAR File: ./$TAR_FILE_NAME successfully, added $LTPROOT/results"
              else
                 echo "Cannot Update TAR File: ./$TAR_FILE_NAME for adding $LTPROOT/results"
              fi
           fi
           if [ -e $LTPROOT/nohup.out ] ; then                     ## If User would have Chosen nohup to do ltprun
              tar -uf ./$TAR_FILE_NAME $LTPROOT/nohup.out
              if [ $? -eq 0 ]; then
                 echo "Updated TAR File: ./$TAR_FILE_NAME successfully, added $LTPROOT/nohup.out"
              else
                 echo "Cannot Update TAR File: ./$TAR_FILE_NAME for adding $LTPROOT/nohup.out"
              fi
           fi
           gzip ./$TAR_FILE_NAME                                     ## gzip this guy
           if [ $? -eq 0 ]; then
              echo "Gunzipped TAR File: ./$TAR_FILE_NAME"
           else
              echo "Cannot Gunzip TAR File: ./$TAR_FILE_NAME"
           fi
           if [ -e /usr/bin/mutt ] ; then                          ## This is a better mail client than others
              echo "Starting mailing reports to: $EMAIL_TO, file: ./$TAR_FILE_NAME.gz"
              mutt -a ./$TAR_FILE_NAME.gz -s "LTP Reports on $test_start_time" $EMAIL_TO < /dev/null
              if [ $? -eq 0 ]; then
                 echo "Reports Successfully mailed to: $EMAIL_TO"
              else
                 echo "Reports cannot be mailed to: $EMAIL_TO"
              fi
           else ## Use our Ageold mail program
              echo "Starting mailing reports to: $EMAIL_TO, file: ./$TAR_FILE_NAME.gz"
              uuencode ./$TAR_FILE_NAME.gz $TAR_FILE_NAME.gz | mail  $EMAIL_TO -s "LTP Reports on $test_start_time"
              if [ $? -eq 0 ]; then
                 echo "Reports Successfully mailed to: $EMAIL_TO"
              else
                 echo "Reports cannot be mailed to: $EMAIL_TO"
              fi
           fi 
       fi
    fi
   
    [ ! -z "$QUIET_MODE" ] && { echo "INFO: Test end time: $(date)" ; }
    
    [ "$GENLOAD" -eq 1 ] && { killall -9 genload  >/dev/null 2>&1; }
    [ "$NETPIPE" -eq 1 ] && { killall -9 NPtcp  >/dev/null 2>&1; }
    
    [ "$ALT_DIR_OUT" -eq 1 ] || [ "$ALT_DIR_RES" -eq 1 ] && \
    {
    cat <<-EOF >&1
        
       ###############################################################"
        
            Done executing testcases."
            LTP Version:  $version_date
       ###############################################################"
       
	EOF
    }
    exit $VALUE
}

cleanup()
{
    rm -rf ${TMP}
}

trap "cleanup" 0
setup
main "$@"