runltp

#!/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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 ltp-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
#		Aug 17 2009 - Modified - Subrata Modak
#		- Added Fault Injection generation Capability through -F Option
#
#################################################################################



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:${LTPROOT}/bin"

    export LTP_DEV_FS_TYPE="ext2"

    [ -d "$LTPROOT/testcases/bin" ] ||
    {
        echo "FATAL: LTP not installed correctly"
        echo "INFO:  Follow directions in INSTALL!"
        exit 1
    }

    [ -e "$LTPROOT/bin/ltp-pan" ] ||
    {
        echo "FATAL: Test suite driver 'ltp-pan' not found"
        echo "INFO:  Follow directions in INSTALL!"
        exit 1
    }
}

version_of_ltp()
{
    cat "$LTPROOT/Version"
    exit 0
}

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

    usage: ${0##*/} [ -a EMAIL_TO ] [ -c NUM_PROCS ] [ -C FAILCMDFILE ] [ -T TCONFCMDFILE ]
    [ -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 -Q [ -r LTPROOT ] [ -s PATTERN ] [ -t DURATION ]
    -v [ -w CMDFILEADDR ] [ -x INSTANCES ] [ -b DEVICE ] [-B LTP_DEV_FS_TYPE]
	[ -F LOOPS,PERCENTAGE ] [ -z BIG_DEVICE ] [-Z  LTP_BIG_DEV_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.
    -T TCONFCMDFILE Command file with all test cases that are not fully tested.
    -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 ',')
	-F LOOPS,PERCENTAGE Induce PERCENTAGE Fault in the Kernel Subsystems, and, run each test for LOOPS loop
    -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()]
    -K DMESG_LOG_DIR
			Log Kernel messages generated for each test cases inside this directory
    -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]
	-M CHECK_TYPE
		[CHECK_TYPE=1 => Full Memory Leak Check tracing children as well]
		[CHECK_TYPE=2 => Thread Concurrency Check tracing children as well]
		[CHECK_TYPE=3 => Full Memory Leak & Thread Concurrency Check tracing children as well]
    -N              Run all the networking tests.
    -o OUTPUTFILE   Redirect test output to a file.
    -p              Human readable format logfiles.
    -q              Print less verbose output to screen. This implies
                    not logging start of the test in kernel log.
    -Q              Don't log start of test in kernel log.
    -r LTPROOT      Fully qualified path where testsuite is installed.
    -R              Randomize test order.
    -s PATTERN      Only run test cases which match PATTERN.
    -S SKIPFILE     Skip tests specified in SKIPFILE
    -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
    -I ITERATIONS   Execute the testsuite ITERATIONS times.
    -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 LTP_DEV_FS_TYPE The file system of test block devices.
    -z BIG_DEVICE   Some tests require a big unmounted block device
                    to run correctly.
    -Z  LTP_BIG_DEV_FS_TYPE The file system of the big device



    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 ALT_DMESG_OUT=0
    local RUN_NETEST=0
    local RUN_REPEATED=0
    local QUIET_MODE=
    local NO_KMSG=
    local NETPIPE=0
    local GENLOAD=0
    local MEMSIZE=0
    local DURATION=
    local CMDFILEADDR=
    local FAILCMDFILE=
    local TCONFCMDFILE=
    local INJECT_KERNEL_FAULT=
    local INJECT_KERNEL_FAULT_PERCENTAGE=
    local INJECT_FAULT_LOOPS_PER_TEST=
    local VALGRIND_CHECK=
    local VALGRIND_CHECK_TYPE=
    local LOGFILE_NAME=
    local LOGFILE=
    local OUTPUTFILE_NAME=
    local OUTPUTFILE=
    local HTMLFILE_NAME=
    local HTMLFILE=
    local DMESG_DIR=
    local EMAIL_TO=
    local TAG_RESTRICT_STRING=
    local PAN_COMMAND=
    local RANDOMRUN=0
    local DEFAULT_FILE_NAME_GENERATION_TIME=`date +"%Y_%m_%d-%Hh_%Mm_%Ss"`
    local scenfile=

    version_date=$(cat "$LTPROOT/Version")

    while getopts a:b:B:c:C:T:d:D:ef:F:g:hi:I:K:l:m:M:No:pqQr:Rs:S:t:T:w:x:z:Z: 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 ;;

        T)
            case $OPTARG in
            /*)
                TCONFCMDFILE="-T $OPTARG" ;;
            *)
                TCONFCMDFILE="-T $LTPROOT/output/$OPTARG"
                ALT_DIR_OUT=1 ;;
            esac ;;

        d)  # convert the user path to absolute path.
            export TMPBASE=$(readlink -f ${OPTARG}) ;;

        D)  NUM_PROCS=1; NUM_FILES=1; NUM_BYTES=$((1024 * 1024 * 1024)); CLEAN_FLAG=0
            ARGUMENT_LIST=$OPTARG
            TOTAL_ARGUMENTS=1
            for ARGUMENT in `echo "$ARGUMENT_LIST" | tr ',' ' '`
            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;;
	F)	INJECT_KERNEL_FAULT=1
		#Seperate out the NO_OF_LOOPS & FAULT_PERCENTAGE
		INJECT_FAULT_LOOPS_PER_TEST=`echo $OPTARG |cut -d',' -f1 | tr -d '\n' | tr -d ' '`
		INJECT_KERNEL_FAULT_PERCENTAGE=`echo $OPTARG |cut -d',' -f2 | tr -d '\n' | tr -d ' '`
		if [ ! $INJECT_FAULT_LOOPS_PER_TEST ]; then
			echo "Loops not properly defined. Resorting to default 5..."
			export INJECT_FAULT_LOOPS_PER_TEST=5
		fi
		if [ ! $INJECT_KERNEL_FAULT_PERCENTAGE ]; then
			echo "Fault Persentage not properly defined. Resorting to default 10..."
			export INJECT_KERNEL_FAULT_PERCENTAGE=10
		fi;;
        g)  HTMLFILE_NAME="$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 ;;

        K)
	    case $OPTARG in
        	   /*)
			DMESG_DIR="$OPTARG-dmesg-output-`echo $$-``date +%X | tr -d ' '`";;
	            *)
		        DMESG_DIR="$LTPROOT/output/$OPTARG-dmesg-output-`echo $$-``date +%X | tr -d ' '`";;
	    esac
            mkdir -p $DMESG_DIR
            ALT_DMESG_OUT=1;;
        l)
            LOGFILE_NAME="$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
            for ARGUMENT in `echo "$ARGUMENT_LIST" | tr ',' ' '`
            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 $BYTES >/dev/null 2>&1 &
            fi
            GENLOAD=1;;
	M)
		VALGRIND_CHECK=1
		VALGRIND_CHECK_TYPE="$OPTARG";;

        N)  RUN_NETEST=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";;

        Q)  NO_KMSG="-Q";;

        r)  LTPROOT=$OPTARG;;

        R)  RANDOMRUN=1;;

        s)  TAG_RESTRICT_STRING=$OPTARG;;

	S)  case $OPTARG in
            /*)
                SKIPFILE=$OPTARG;;
            *)
                SKIPFILE="$LTPROOT/$OPTARG";;
            esac ;;

        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" ;;

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

        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) LTP_DEV_FS_TYPE=$OPTARG;;
        z) BIG_DEVICE=$OPTARG;;
        Z) BIG_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 [ ! "$TCONFCMDFILE" ]; then
         ALT_DIR_OUT=1
         if [ ! "$OUTPUTFILE" ]; then
            if [ ! "$LOGFILE" ]; then
               TCONF_FILE_NAME="$DEFAULT_FILE_NAME_GENERATION_TIME"
               TCONFCMDFILE="-T $LTPROOT/output/LTP_RUN_ON-${TCONF_FILE_NAME}.tconf"
            else
               TCONF_FILE_NAME=`basename $LOGFILE_NAME`
               TCONFCMDFILE="-T $LTPROOT/output/LTP_RUN_ON-${TCONF_FILE_NAME}.tconf"
            fi
         else
               TCONF_FILE_NAME=`basename $OUTPUTFILE_NAME`
               TCONFCMDFILE="-T $LTPROOT/output/LTP_RUN_ON-${TCONF_FILE_NAME}.tconf"
         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 ] && \
    {
        [ ! -d $LTPROOT/output ] && \
        {
           echo "INFO: creating $LTPROOT/output directory"
           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: $TMP"
        exit 1
    }
    export TMP
    # To be invoked by tst_tmpdir()
    # write to it as user nobody
    export TMPDIR=$TMP

    chmod 777 $TMP || \
    {
      echo "unable to chmod 777 $TMP ... aborting"
      exit 1
    }

    cd $TMP || \
    {
      echo "could not cd ${TMP} ... exiting"
      exit 1
    }

    [ -n "$INSTANCES" ] && \
    {
      INSTANCES="$INSTANCES -O ${TMP}"
    }

    # If user does not provide a command file select a default set of testcases
    # to execute.
    if [ -z "$CMDFILES" ] && [ -z "$CMDFILEADDR" ]; then

        SCENARIO_LISTS="$LTPROOT/scenario_groups/default"
        if [ "$RUN_NETEST" -eq 1 ]; then
            SCENARIO_LISTS="$LTPROOT/scenario_groups/network"
        fi

        cat <<-EOF >&1
INFO: no command files were provided. Executing following runtest scenario files:
`cat $SCENARIO_LISTS | tr '\012' ' '`

EOF
        cat_ok_sentinel=$TMP/cat_ok.$$
        touch "$cat_ok_sentinel"
        cat $SCENARIO_LISTS | while read scenfile; do
            scenfile=${LTPROOT}/runtest/$scenfile
            [ -f "$scenfile" ] || continue

            cat $scenfile >> "$TMP/alltests" || {
                echo "FATAL: unable to append to command file"
                rm -Rf "$TMP"
                rm -f "$cat_ok_sentinel"
                exit 1
            }
        done
        rm -f "$cat_ok_sentinel"
    fi

    [ -n "$CMDFILES" ] && \
    {
        for scenfile in `echo "$CMDFILES" | tr ',' ' '`
        do
            [ -f "$scenfile" ] || scenfile="$LTPROOT/runtest/$scenfile"
            cat "$scenfile" >> ${TMP}/alltests || \
            {
                echo "FATAL: unable to create command file"
                rm -Rf "$TMP"
                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
        }
    }

    # 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

    # Blacklist or skip tests if a SKIPFILE was specified with -S
    if [ -n "${SKIPFILE}" ]; then
        for test_name in $(awk '{print $1}' "${SKIPFILE}"); do
            case "${test_name}" in \#*) continue;; esac
            sed -i "/\<${test_name}\>/c\\${test_name} exit 32;" alltests
        done
    fi

    # check for required users and groups
    ${LTPROOT}/IDcheck.sh || \
    {
        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
    }
    }

    set_block_device

    # here even if the user don't specify a big block device, we
    # also don't create the big block device.
    if [ -z "$BIG_DEVICE" ]; then
        echo "no big block device was specified on commandline."
        echo "Tests which require a big block device are disabled."
        echo "You can specify it with option -z"
    else
        export LTP_BIG_DEV=$BIG_DEVICE
        if [ -z "$BIG_DEVICE_FS_TYPE" ]; then
            export LTP_BIG_DEV_FS_TYPE="ext2"
        else
            export LTP_BIG_DEV_FS_TYPE=$BIG_DEVICE_FS_TYPE
        fi
    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

    if [ "$RANDOMRUN" != "0" ]; then
        sort -R ${TMP}/alltests -o ${TMP}/alltests
    fi

    [ ! -z "$QUIET_MODE" ] && { echo "INFO: Test start time: $(date)" ; }
    PAN_COMMAND="${LTPROOT}/bin/ltp-pan $QUIET_MODE $NO_KMSG -e -S $INSTANCES $DURATION -a $$ \
    -n $$ $PRETTY_PRT -f ${TMP}/alltests $LOGFILE $OUTPUTFILE $FAILCMDFILE $TCONFCMDFILE"
    echo "COMMAND:    $PAN_COMMAND"
    if [ ! -z "$TAG_RESTRICT_STRING" ] ; then
      echo "INFO: Restricted to $TAG_RESTRICT_STRING"
    fi
    #$PAN_COMMAND #Duplicated code here, because otherwise if we fail, only "PAN_COMMAND" gets output

    ## Display the Output/Log/Failed/HTML file names here
    printf "LOG File: "
    echo $LOGFILE | cut -b4-

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

    printf "FAILED COMMAND File: "
    echo $FAILCMDFILE | cut -b4-

   printf "TCONF COMMAND File: "
   echo $TCONFCMDFILE | cut -b4-

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

    echo "Running tests......."
    test_start_time=$(date)

	# User wants testing with Kernel Fault Injection
	if [ $INJECT_KERNEL_FAULT ] ; then
		#See if Debugfs is mounted, and
		#Fault Injection Framework available through Debugfs
		use_faultinjection=true
		for debug_subdir in \
			fail_io_timeout \
			fail_make_request \
			fail_page_alloc \
			failslab \
		; do
			if [ -d "/sys/kernel/debug/$debug_subdir" ]
			then
				use_faultinjection=true
				break
			fi
		done
		if $use_faultinjection; then
			#If atleast one of the Framework is available
			#Go ahead to Inject Fault & Create required
			#Command Files for LTP run
			echo Running tests with Fault Injection Enabled in the Kernel...
			awk -v LOOPS=$INJECT_FAULT_LOOPS_PER_TEST \
				-v PERCENTAGE=$INJECT_KERNEL_FAULT_PERCENTAGE \
				-f ${LTPROOT}/bin/create_kernel_faults_in_loops_and_probability.awk \
				${TMP}/alltests > ${TMP}/alltests.tmp
			cp ${TMP}/alltests.tmp ${TMP}/alltests
			rm -rf ${TMP}/alltests.tmp
		else
			echo Fault Injection not enabled in the Kernel..
			echo Running tests normally...
		fi
	fi

	## Valgrind Check will work only when Kernel Fault Injection is not expected,
	## We do not want to test Faults when valgrind is running
	if [ $VALGRIND_CHECK ]; then
		if [ ! $INJECT_KERNEL_FAULT ]; then
			which valgrind || VALGRIND_CHECK_TYPE=XYZ
			case $VALGRIND_CHECK_TYPE in
			[1-3])
				awk -v CHECK_LEVEL=$VALGRIND_CHECK_TYPE \
					-f ${LTPROOT}/bin/create_valgrind_check.awk \
					${TMP}/alltests $VALGRIND_CHECK_TYPE > \
					${TMP}/alltests.tmp
				cp ${TMP}/alltests.tmp ${TMP}/alltests
				rm -rf ${TMP}/alltests.tmp
				;;
			*)
				echo "Invalid Memory Check Type, or, Valgrind is not available"
				;;
			esac
		fi
	fi

	if [ $ALT_DMESG_OUT -eq 1 ] ; then
		#We want to print dmesg output for each test,lets do the trick inside the script
		echo Enabling dmesg output logging for each test...
		awk -v DMESG_DIR=$DMESG_DIR \
			-f ${LTPROOT}/bin/create_dmesg_entries_for_each_test.awk \
			${TMP}/alltests > ${TMP}/alltests.tmp
		cp ${TMP}/alltests.tmp ${TMP}/alltests
		rm -rf ${TMP}/alltests.tmp
	fi
    # Some tests need to run inside the "bin" directory.
    cd "${LTPROOT}/testcases/bin"
    "${LTPROOT}/bin/ltp-pan" $QUIET_MODE $NO_KMSG -e -S $INSTANCES $DURATION -a $$ -n $$ $PRETTY_PRT -f ${TMP}/alltests $LOGFILE $OUTPUTFILE $FAILCMDFILE $TCONFCMDFILE

    if [ $? -eq 0 ]; then
      echo "INFO: ltp-pan reported all tests PASS"
      VALUE=0
      export LTP_EXIT_VALUE=0;
    else
      echo "INFO: ltp-pan reported some tests FAIL"
      VALUE=1
      export LTP_EXIT_VALUE=1;
    fi
    cd ..
    echo "LTP Version: $version_date"

	# $DMESG_DIR is used to cache messages obtained from dmesg after a test run.
	# Proactively reap all of the 0-byte files in $DMESG_DIR as they have zero value
	# and only clutter up the filesystem.

	if [ $ALT_DMESG_OUT -eq 1 ] ; then
		if ! find "$DMESG_DIR" -size 0 -exec rm {} + ; then
			echo "cd to $DMESG_DIR failed: $?"
		fi
		if [ -n "$(ls "$DMESG_DIR")" ] ; then
			echo "Kernel messages were generated for LTP tests $version_date"
		else
			echo "No Kernel messages were generated for LTP tests $version_date"
		fi
	fi

    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/bin/genhtml.pl $LTPROOT/bin/html_report_header.txt test_start test_end test_output execution_status $OUTPUT_DIRECTORY  > $HTMLFILE; )
       echo "Generated HTML Output.....!!"
       echo "Location: $HTMLFILE";

    fi

    if [ "$ALT_EMAIL_OUT" -eq 1 ] ; then                    ## User wants reports to be e-mailed
        TAR_FILE_NAME=LTP_RUN_$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 which mutt >/dev/null 2>&1; then
            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

    [ ! -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
}

set_block_device()
{
    if [ -n "$DEVICE" ]; then
        export LTP_DEV=$DEVICE
    fi
}

cleanup()
{
    [ "$LOOP_DEV" ] && losetup -d $LOOP_DEV
    rm -rf ${TMP}
}


LTP_SCRIPT="$(basename $0)"

if [ "$LTP_SCRIPT" = "runltp" ]; then
    trap "cleanup" 0
    setup
    main "$@"
fi