#!/bin/bash --norc
# vim:sts=4:sw=4:ts=8:et

# mkdumprd
#
# Copyright 2005 Red Hat, Inc.
#
# Written by Erik Troan <ewt@redhat.com>
#
# Contributors:
#	Elliot Lee <sopwith@cuc.edu>
#	Miguel de Icaza <miguel@nuclecu.unam.mx>
#	Christian 'Dr. Disk' Hechelmann <drdisk@ds9.au.s.shuttle.de>
#	Michael K. Johnson <johnsonm@redhat.com>
#	Pierre Habraken <Pierre.Habraken@ujf-grenoble.fr>
#	Jakub Jelinek <jakub@redhat.com>
#	Carlo Arenas Belon (carenas@chasqui.lared.net.pe>
#	Keith Owens <kaos@ocs.com.au>
#	Bernhard Rosenkraenzer <bero@redhat.com>
#	Matt Wilson <msw@redhat.com>
#       Trond Eivind Glomsrød <teg@redhat.com>
#       Jeremy Katz <katzj@redhat.com>
#       Preston Brown <pbrown@redhat.com>
#	Bill Nottingham <notting@redhat.com>
#       Guillaume Cottenceau <gc@mandrakesoft.com>
#	Peter Jones <pjones@redhat.com>
#       Neil Horman <nhorman@redhat.com>
cmdname=`basename $0`

umask 0022

export MALLOC_PERTURB_=204

PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH
export PATH

. /etc/rc.d/init.d/functions

VERSION=5.0.39

PROBE="yes"
MODULES=""
PREMODS=""
DMRAIDS=""
MPATHS=""


CONFMODS="$MODULES"
MODULES=""

withusb=yes
compress=1
allowmissing=""
target=""
kernel=""
force=""
verbose=""
img_vers=""
builtins=""
modulefile=/etc/modules.conf
rc=0

IMAGESIZE=8000
PRESCSIMODS="sd_mod"
fstab="/etc/fstab"

vg_list=""
net_list=""
USING_METHOD=""
SAVE_PATH=/var/crash

vecho()
{
    NONL=""
    if [ "$1" == "-n" ]; then
        NONL="-n"
        shift
    fi
    [ -n "$verbose" ] && echo $NONL "$@"
}

error()
{
    NONL=""
    if [ "$1" == "-n" ]; then
        NONL="-n"
        shift
    fi
    echo $NONL "$@" >&2
}

usage () {
    if [ "$1" == "-n" ]; then
        cmd=echo
    else
        cmd=error
    fi

    $cmd "usage: $cmdname [--version] [--help] [-v] [-d] [-f] [--preload <module>]"
    $cmd "       [--force-ide-probe] [--force-scsi-probe | --omit-scsi-modules]"
    $cmd "       [--image-version] [--force-scsi-probe | --omit-raid-modules]"
    $cmd "       [--with=<module>] [--force-lvm-probe | --omit-lvm-modules]"
    $cmd "       [--builtin=<module>] [--omit-dmraid]"
    $cmd "       [--fstab=<fstab>] [--nocompress] <initrd-image> <kernel-version>"
    $cmd ""
    $cmd "       (ex: $cmdname /boot/initrd-2.2.5-15.img 2.2.5-15)"

    if [ "$1" == "-n" ]; then
        exit 0
    else
        exit 1
    fi
}

moduledep() {
    if [ ! -f "/lib/modules/$kernel/modules.dep" ]; then
	error "No dep file found for kernel $kernel"
	exit 1
    fi

    vecho -n "Looking for deps of module $1"
    deps=$(awk 'BEGIN { searched=ARGV[2]; ARGV[2]=""; rc=1 } \
                function modname(filename) { match(filename, /\/([^\/]+)\.k?o:?$/, ret); return ret[1] } \
                function show() { if (orig == searched) { print dep; orig=""; rc=0; exit } } \
                /^\/lib/ { show(); \
                           orig=modname($1); dep=""; \
                           if ($2) { for (i = 2; i <= NF; i++) { dep=sprintf("%s %s", dep, modname($i)); } } } \
                /^	/ { dep=sprintf("%s %s", dep, modname($1));  } \
                END      { show(); exit(rc) }' /lib/modules/$kernel/modules.dep $1)
    [ -n "$deps" ] && vecho ":$deps" || vecho
}

findone() {
    echo nash-find "$@" | /sbin/nash --force --quiet \
	| /bin/awk '{ print $1; exit; }'
}

findall() {
    echo nash-find "$@" | /sbin/nash --force --quiet
}

dm_get_uuid() {
    echo dm get_uuid "$1" | /sbin/nash --force --quiet
}

findmodule() {
    skiperrors=""

    if [ $1 == "--skiperrors" ]; then
	skiperrors=--skiperrors
	shift
    fi

    local modName=$1

    if [ "$modName" = "off" -o "$modName" = "null" ]; then
	return
    fi

    if [ $(echo $modName | cut -b1) = "-" ]; then
	skiperrors=--skiperrors
	modName=$(echo $modName | cut -b2-)
    fi

    case "$MODULES " in
        *"/$modName.ko "*) return ;;
    esac

    if echo $builtins | egrep -q '(^| )'$modName'( |$)' ; then
        vecho "module $modName assumed to be built in"
	return
    fi

    # special cases
    if [ "$modName" = "i2o_block" ]; then
	findmodule i2o_core
	findmodule -i2o_pci
	modName="i2o_block"
    elif [ "$modName" = "ppa" ]; then
	findmodule parport
	findmodule parport_pc
	modName="ppa"
    elif [ "$modName" = "sbp2" ]; then
	findmodule ieee1394
	findmodule ohci1394
	modName="sbp2"
    else
	moduledep $modName
	for i in $deps; do
	    findmodule $i
	done
    fi

    for modExt in o.gz o ko ; do
	for modDir in /lib/modules/$kernel/updates /lib/modules/$kernel ; do
	    if [ -d $modDir ]; then
		fmPath=$(findone $modDir -name $modName.$modExt)
	        if [ -f "$fmPath" ]; then
		    break 2
	        fi
	    fi
        done
    done

    if [ ! -f $fmPath ]; then
	if [ -n "$skiperrors" ]; then
	    return
	fi

        # ignore the absence of the scsi modules
	for n in $PRESCSIMODS; do
	    if [ "$n" = "$modName" ]; then
		return;
	    fi
	done;

	if [ -n "$allowmissing" ]; then
	    error "WARNING: No module $modName found for kernel $kernel, continuing anyway"
	    return
	fi

	error "No module $modName found for kernel $kernel, aborting."
	exit 1
    fi

    # only need to add each module once
    MODULES="$MODULES $fmPath"

    # need to handle prescsimods here -- they need to go _after_ scsi_mod
    if [ "$modName" = "scsi_mod" ]; then
	for n in $PRESCSIMODS ; do
	    findmodule $n
	done
    fi
}


inst() {
    if [ "$#" != "2" ];then
        echo "usage: inst <file> <destination>"
        return
    fi
    vecho "$1 -> $2"
    cp $1 $2
}

readlink() {
    echo nash-readlink "$1" | /sbin/nash --force --quiet
}

access() {
    echo nash-access -w $t | /sbin/nash --force --quiet
}

findstoragedriverinsys () {
    while [ ! -L device ]; do
        [ "$PWD" = "/sys" ] && return
        cd ..
    done
    cd $(readlink ./device)
    while [ ! -f modalias ]; do
        [ "$PWD" = "/sys/devices" ] && return
        cd ..
    done
    modalias=$(cat modalias)
    for driver in $(modprobe --set-version $kernel --show-depends $modalias 2>/dev/null| awk '{ print gensub(".*/","","g",$2) }') ; do
        findmodule ${driver%%.ko}
    done
}

findstoragedriver () {
    for device in $@ ; do
        case " $handleddevices " in
            *" $device "*)
                continue ;;
            *) handleddevices="$handleddevices $device" ;;
        esac
        if [[ "$device" =~ "md[0-9]+" ]]; then
            vecho "Found RAID component $device"
            handleraid "$device"
            continue
        fi
        vecho "Looking for driver for device $device"
        sysfs=$(findone -type d /sys/block -name $device)
        [ -z "$sysfs" ] && return
        pushd $sysfs >/dev/null 2>&1
        findstoragedriverinsys
        popd >/dev/null 2>&1
    done
}

findnetdriver() {
    for device in $@ ; do
        case " $handleddevices " in
            *" $device "*)
                continue ;;
            *) handleddevices="$handleddevices $device" ;;
        esac

        case "$device" in
        bond*)
            modalias=bonding
            ;;
        eth*.*)
            modalias=8021q
            ;;
        *)
            if [ -f /sys/class/net/$device/device/modalias ]
            then 
                modalias=$(cat /sys/class/net/$device/device/modalias)
            else
                modalias=$(ethtool -i $device | awk '/^driver:/ { print $2 }')
            fi
            ;;
        esac
        for driver in $(modprobe --set-version $kernel --show-depends $modalias 2>/dev/null| awk '{ print gensub(".*/","","g",$2) }') ; do
            findmodule ${driver%%.ko}
        done
    done
}

handleraid() {
    local start=0

    if [ -n "$noraid" -o ! -f /proc/mdstat ]; then
        return 0
    fi

    levels=$(grep "^$1[	 ]*:" /proc/mdstat | \
        awk '{ print $4 }')
    devs=$(grep "^$1[	 ]*:" /proc/mdstat | \
        awk '{ print gensub("\\[[0-9]*\\]","","g",gensub("^md.*raid[0-9]*","","1")) }')

    for level in $levels ; do
	case $level in
	linear)
	    findmodule linear
	    start=1
	    ;;
	multipath)
	    findmodule multipath
	    start=1
	    ;;
	raid[01456] | raid10)
	    findmodule $level
	    start=1
	    ;;
	*)
	    error "raid level $level (in /proc/mdstat) not recognized"
	    ;;
	esac
    done
    findstoragedriver $devs
    if [ "$start" = 1 ]; then
        raiddevices="$raiddevices $1"
    fi
    return $start
}

handlelvordev() {
    local vg=`lvs --noheadings -o vg_name $1 2>/dev/null`
    if [ -z "$vg" ]; then
        vg=`lvs --noheadings -o vg_name $(echo $1 | sed -e 's#^/dev/mapper/\([^-]*\)-\(.*\)$#/dev/\1/\2#') 2>/dev/null`
    fi
    if [ -n "$vg" ]; then
        vg=`echo $vg` # strip whitespace
        case " $vg_list " in
        *" $vg "*)
            ;;
        *)
            vg_list="$vg_list $vg"
            for device in `vgdisplay -v $vg 2>/dev/null | sed -n 's/PV Name//p'`; do
                findstoragedriver ${device##/dev/}
            done
            ;;
        esac
    else
        findstoragedriver ${1##/dev/}
    fi
}

handlenetdev() {
    local dev=$1
    cp /etc/sysconfig/network-scripts/ifcfg-$dev $MNTIMAGE/etc
    BOOTPROTO=""
    VLAN=""
    MASTER=""
    SLAVE=""
    . $MNTIMAGE/etc/ifcfg-$dev

    findnetdriver $dev


    if [ "$BOOTPROTO" == "dhcp" ]
    then
        echo iface $dev inet dhcp >> $MNTIMAGE/etc/network/interfaces
    else    
        echo iface $dev inet static >> $MNTIMAGE/etc/network/interfaces
        if [ -n "$IPADDR" ]
        then
            echo "  " address $IPADDR >> $MNTIMAGE/etc/network/interfaces
        fi
        if [ -n "$NETMASK" ]
        then
            echo "  " netmask $NETMASK >> $MNTIMAGE/etc/network/interfaces
        fi
        if [ -z "$GATEWAY" ]
        then
            GATEWAY=`/sbin/ip route show | awk '/^default/ {print $3}'`
        fi
        echo "  " gateway $GATEWAY >> $MNTIMAGE/etc/network/interfaces
    fi

    #This lets us recursively handle stacked devices
    case "$dev" in
        bond*)
            #This is a bond, pick up its slaves
            for j in `cat /sys/class/net/$dev/bonding/slaves`
            do
                handlenetdev $j
            done
            echo "BUS_ID=\"Bonding\"" >> $MNTIMAGE/etc/ifcfg-$dev
            ;;
        *)

            if [ "$VLAN" == "yes" ] 
            then
                #put code to handle vlan devices
                echo "BUS_ID=\"Vlan\"" >> $MNTIMAGE/etc/ifcfg-$dev
                #now make sure we pick up the driver to support the 
                #underlying interface
                BASE_IFC=`echo $dev | cut -d"." -f1`
                handlenetdev $BASE_IFC
            else
                BUS_ID=`ls -l /sys/class/net/$dev/device | sed -e's/\(.*\/\)\(.*$\)/\2/'`
                echo "BUS_ID=\"$BUS_ID\"" >> $MNTIMAGE/etc/ifcfg-$dev
            fi
            ;;
    esac
}

while [ $# -gt 0 ]; do
    case $1 in
	--fstab*)
	    if echo $1 | grep -q '=' ; then
	    	fstab=`echo $1 | sed 's/^--fstab=//'`
	    else
		fstab=$2
		shift
	    fi
	    ;;

	--with-usb)
	    withusb=yes
	    ;;

        --without-usb)
            withusb=no
            ;;

	--with*)
	    if echo $1 | grep -q '=' ; then
	    	modname=`echo $1 | sed 's/^--with=//'`
	    else
		modname=$2
		shift
	    fi

	    basicmodules="$basicmodules $modname"
	    ;;

	--builtin*)
	    if echo $1 | grep -q '=' ; then
	    	modname=`echo $1 | sed 's/^--builtin=//'`
	    else
		modname=$2
		shift
	    fi
	    builtins="$builtins $modname"
	    ;;

	--version)
	    echo "$cmdname: version $VERSION"
	    exit 0
	    ;;

	-v)
	    verbose=-v
	    ;;

	--nocompress)
	    compress=""
	    ;;

	--ifneeded)
	    # legacy
	    ;;

	-f)
	    force=1
	    ;;
    
        -d)
            KDUMP_CONFIG_FILE=""
            if [ -f /etc/kdump.conf ]; then
                KDUMP_CONFIG_FILE="/etc/kdump.conf"
            fi
            ;;

	--preload*)
	    if echo $1 | grep -q '=' ; then
	    	modname=`echo $1 | sed 's/^--preload=//'`
	    else
		modname=$2
		shift
	    fi
	    PREMODS="$PREMODS $modname"
	    ;;
	--force-scsi-probe)
	    forcescsi=1
	    ;;
	--omit-scsi-modules)
	    PRESCSIMODS=""
	    noscsi=1
	    ;;
	--force-raid-probe)
	    forceraid=1
	    ;;
	--omit-raid-modules)
	    noraid=1
	    ;;
	--force-lvm-probe)
	    forcelvm=1
	    ;;
	--omit-lvm-modules)
	    nolvm=1
	    ;;
	--omit-dmraid)
	    nodmraid=1
            ;;
        --force-ide-probe)
            forceide=1
            ;;
	--image-version)
	    img_vers=yes
	    ;;
	--allow-missing)
	    allowmissing=yes
	    ;;
	--noresume)
	    noresume=1
	    ;;
        --help)
            usage -n
            ;;
	*)
	    if [ -z "$target" ]; then
		target=$1
	    elif [ -z "$kernel" ]; then
		kernel=$1
	    else
		usage
	    fi
	    ;;
    esac

    shift
done

if [ -z "$target" -o -z "$kernel" ]; then
    usage
fi

if [ -n "$img_vers" ]; then
    target="$target-$kernel"
fi

if [ -z "$force" -a -f $target ]; then
    error "$target already exists."
    exit 1
fi

if [ -n "$forcescsi" -a -n "$noscsi" ]; then
    error "Can't both force scsi probe and omit scsi modules"
    exit 1
fi

if [ -n "$forceraid" -a -n "$noraid" ]; then
    error "Can't both force raid probe and omit raid modules"
    exit 1
fi

if [ -n "$forcelvm" -a -n "$nolvm" ]; then
    error "Can't both force LVM probe and omit LVM modules"
    exit 1
fi

if [ ! -d /lib/modules/$kernel ]; then
    error 'No modules available for kernel "'${kernel}'".'
    exit 1
fi

if [ $UID != 0 ]; then
    error "$cmdname must be run as root."
    exit 1
fi

vecho "Creating initramfs"
modulefile=/etc/modprobe.conf

# find a temporary directory which doesn't use tmpfs
TMPDIR=""
for t in /tmp /var/tmp /root ${PWD}; do
    if [ ! -d $t ]; then continue; fi
    if ! access -w $t ; then continue; fi

    fs=$(df -T $t 2>/dev/null | awk '{line=$1;} END {printf $2;}')
    if [ "$fs" != "tmpfs" ]; then
	TMPDIR=$t
	break
    fi
done

if [ -z "$TMPDIR" ]; then
    error "no temporary directory could be found."
    exit 1
fi

if [ $TMPDIR = "/root" -o $TMPDIR = "${PWD}" ]; then
    error "WARNING: using $TMPDIR for temporary files"
fi

for n in $PREMODS; do
	findmodule $n
done

needusb=""
if [ -n "$withusb" -a "x$PROBE" == "xyes" ]; then
    # If / or /boot is on a USB device include the driver. With root by
    # label we could still get some odd behaviors
    for fs in / /boot ; do
        esc=$(echo $fs | sed 's,/,\\/,g')
        dev=$(mount | awk "/ on ${esc} / { print \$1 }" | sed 's/[0-9]*$//' | cut -d/ -f3)
        if [ "$(echo $dev | cut -c1-2)" = sd ]; then
            if [ `which kudzu 2>/dev/null` ]; then
                host=$(kudzu --probe -b scsi |
                gawk '/^device: '${dev}'/,/^host:/ { if (/^host/) { print $2; exit; } }')
                if [ -d /proc/scsi/usb-storage-${host} -o -f /proc/scsi/usb-storage/${host} ]; then
                    needusb=1
                fi
            fi
        fi
    done
fi

if [ -n "$needusb" -a "x$PROBE" == "xyes" ]; then
    drivers=$(awk '/^alias[[:space:]]+usb-controller[0-9]* / { print $3}' < $modulefile)
    useUSB=0
    if [ -n "$drivers" ]; then
        useUSB=1
        for driver in $drivers; do
            findmodule $driver
        done
    fi
    for x in $(grep ^[eou]hci_hcd /proc/modules | awk '{ print $1 }' | tac) ; do
        useUSB=1
        findmodule $(echo $x | sed 's/_/-/')
    done
    if [ "$useUSB" == "1" ]; then
        findmodule scsi_mod
        findmodule sd_mod
        findmodule usb-storage
    fi
fi

if [ -n "$forcescsi" -o -z "$noscsi" -a "x$PROBE" == "xyes" ]; then
    if [ ! -f $modulefile ]; then
        modulefile=/etc/conf.modules
    fi

    if [ -f $modulefile ]; then
	scsimodules=`grep "alias[[:space:]]\+scsi_hostadapter" $modulefile | grep -v '^[ 	]*#' | LC_ALL=C sort -u | awk '{ print $3 }'`

	if [ -n "$scsimodules" ]; then
            for n in $scsimodules; do
    # for now allow scsi modules to come from anywhere.  There are some
    # RAID controllers with drivers in block/
		findmodule $n
	    done
	fi
    fi
fi

# If we have ide devices and module ide, do the right thing
ide=/proc/ide/ide*
if [ -n "$forceide" -o -n "$ide" -a "x$PROBE" == "xyes" ]; then
    findmodule -ide-disk
fi

# If we have dasd devices, include the necessary modules (S/390)
if [ "x$PROBE" == "xyes" -a -d /proc/dasd ]; then
    findmodule -dasd_mod
    findmodule -dasd_eckd_mod
    findmodule -dasd_fba_mod
fi

if [ "x$PROBE" == "xyes" ]; then
    rootfs=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $3; }}' $fstab)
    rootopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $4; }}' $fstab)

    # in case the root filesystem is modular
    findmodule -${rootfs}

    rootdev=$(awk '/^[ \t]*[^#]/ { if ($2 == "/") { print $1; }}' $fstab)
    # check if it's nfsroot
    if [ "$rootfs" == "nfs" ]; then
	remote=$(echo $rootdev | cut -d : -f 1)
	# FIXME: this doesn't handle ips properly
	remoteip=$(host $remote | cut -d ' ' -f 4) 
	netdev=`/sbin/ip route get to $remoteip |sed 's|.*dev \(.*\).*|\1|g' |awk {'print $1;'} |head -n 1`	
	net_list="$net_list $netdev"
    # check if it's root by label
    elif echo $rootdev | cut -c1-6 | grep -q "LABEL=" ; then
    	rootopts=$(echo $rootopts | sed -e 's/^r[ow],//' -e 's/,r[ow],$//' -e 's/,r[ow],/,/' \
                     -e 's/^r[ow]$/defaults/' -e 's/$/,ro/')
        majmin=$(get_numeric_dev dec /dev/root)
        if [ -n "$majmin" ]; then
            dev=$(findall /sys/block -name dev | while read device ; do \
	          echo "$majmin" | cmp -s $device && echo $device ; done \
	          | sed -e 's,.*/\([^/]\+\)/dev,\1,' )
	    if [ -n "$dev" ]; then
                vecho "Found root device $dev for $rootdev"
                rootdev=$dev
	    fi
        fi
    else
    	rootopts=$(echo $rootopts | sed -e 's/^r[ow],//' -e 's/,r[ow],$//' -e 's/,r[ow],/,/' \
                     -e 's/^r[ow]$/defaults/' -e 's/$/,ro/')
    fi
    [ "$rootfs" != "nfs" ] && handlelvordev $rootdev

    # find the first swap dev which would get used for swsusp
    swsuspdev=$(awk '/^[ \t]*[^#]/ { if ($3 == "swap") { print $1; }}' $fstab \
                | head -n 1)
    if ! echo $swsuspdev | cut -c1-6 | grep -q "LABEL=" ; then
        handlelvordev $swsuspdev
    fi
fi

# If we use LVM or dm-based raid, include dm-mod
# XXX: dm not really supported yet.
testdm=""
[ -n "$vg_list" ] && testdm="yes"
[ -n "$forceraid" -o -n "$forcelvm" ] && testdm="yes"
[ -z "$nolvm" -o -z "$noraid" ] && testdm="yes"
[ "x$PROBE" != "xyes" ] && testdm=""

if [ -n "$testdm" ]; then
    if [ -x /sbin/dmsetup -a -e /dev/mapper/control ]; then
	dmout=$(/sbin/dmsetup ls 2>/dev/null)
	if [ "$dmout" != "No devices found" -a "$dmout" != "" ]; then
	    findmodule -dm-mod

            # DM requires all of these to be there in case someone used the
            # feature.  broken.  (#132001)
            findmodule -dm-mirror
            findmodule -dm-zero
            findmodule -dm-snapshot
	fi
    fi
    if [ -x /sbin/dmraid -a -z "$nodmraid" ]; then
        for raid in $(/sbin/dmraid -s -craidname 2>/dev/null | grep -vi "no raid disks" ) ; do
            dmname=$(resolve_dm_name $raid)
            if [ -n "$dmname" ]; then
                DMRAIDS="$DMRAIDS $dmname"
            fi
        done
    fi
fi
	    
for n in $basicmodules; do
    findmodule $n
done

for n in $CONFMODS; do
    findmodule $n
done

vecho "Using modules:$MODULES"

MNTIMAGE=`mktemp -d ${TMPDIR}/initrd.XXXXXX`
IMAGE=`mktemp ${TMPDIR}/initrd.img.XXXXXX`
RCFILE=$MNTIMAGE/init

cemit()
{
    cat >> $RCFILE
}

emit()
{
    NONL=""
    if [ "$1" == "-n" ]; then
        NONL="-n"
        shift
    fi
    echo $NONL "$@" >> $RCFILE
}

emitdm()
{
    vecho "Adding dm map \"$1\""
    UUID=$(dm_get_uuid "$1")
    if [ -n "$UUID" ]; then
        UUID="--uuid $UUID"
    fi
    emit "echo \"$(/sbin/dmsetup table $1)\" | /sbin/dmsetup.static create \"$1\" $UUID"
}

emitdms()
{
    [ -z "$MPATHS" -a -z "$DMRAIDS" ] && return 0
    echo dm list $MPATHS $DMRAIDS | nash --force --quiet | \
            while read ACTION NAME ; do
        case $ACTION in
        rmparts)
            emit rmparts "$NAME"
            ;;
        create)
            emitdm "$NAME"
            ;;
        part)
            emit /sbin/kpartx.static -pp -a \"/dev/mapper/$NAME\"
            ;;
        esac
    done
}

if [ -z "$MNTIMAGE" -o -z "$IMAGE" ]; then
    error "Error creating temporaries.  Try again"
    exit 1
fi
if [ -n "$KDUMP_CONFIG_FILE" ]; then
    while read type location; do

        case "$type" in
        net)
            #grab remote host and xlate into numbers
            rhost=`echo $location | sed 's/.*@//' | cut -d':' -f1`
            USE_SSH=`echo $location | grep @`
            if [ -n "$USE_SSH" ]; then
                USING_METHOD="ssh"
            else
                USING_METHOD="nfs"
            fi
            need_dns=`echo $rhost|grep [a-zA-Z]`
            [ -n "$need_dns" ] && rhost=`host $rhost|cut -d' ' -f4`

            #find ethernet device used to route to remote host, ie eth0
            netdev=`/sbin/ip route get to $rhost 2>&1`
            [ $? != 0 ] && echo "Bad kdump location: $location" && exit 1 
            #the field in the ip output changes if we go to another subnet
            OFF_SUBNET=`echo $netdev | grep via`
            if [ -n "$OFF_SUBNET" ]
            then
                # we are going to a different subnet
                netdev=`echo $netdev|awk '{print $5;}'|head -n 1`
            else
                # we are on the same subnet
                netdev=`echo $netdev|awk '{print $3}'|head -n 1`
            fi
           
            #add the ethernet device to the list of modules 
            mkdir -p $MNTIMAGE/etc/network/
            handlenetdev $netdev
            echo $netdev >> $MNTIMAGE/etc/iface_to_activate

            #load nfs modules, if needed 
            echo $location | grep -v "@" > /dev/null && findmodule nfs
            ;;
        raw)
            USING_METHOD="raw"
            if (echo $location | egrep -q "^(LABEL|UUID)="); then
                location=$(findfs $location)
            fi
            handlelvordev $location
            ;;
        core_collector)
            if [ -x /sbin/makedumpfile ]; then
                CORE_COLLECTOR=$location
                CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e's/makedumpfile/makedumpfile -i \/etc\/makedumpfile.config/'`
            else
                echo "Cannot use the core_collector option on this arch"
                rm -rf $MNTIMAGE
                rm -rf $IMAGE
                exit 1
            fi
            ;;
        path)
            SAVE_PATH=$location
            ;;
        link_delay)
            LINK_DELAY=$location
            ;;
        default)
            DEFAULT_ACTION=$location
            ;;
        *)
            IS_COMMENT=`echo $type | grep ^#.*$`
            if [ -n "$IS_COMMENT" -o -z "$location" ]
            then
                     #don't process comments or blank line
                     continue
            fi
            USING_METHOD="filesystem"
            if (echo $location | egrep -q "^(LABEL|UUID)="); then
                location=$(findfs $location)
            fi
            handlelvordev $location
            ;;
        esac

    done < $KDUMP_CONFIG_FILE
fi

if [ -n "$CORE_COLLECTOR" ]; then
    if [ "$USING_METHOD" == "ssh" ] || [ "$USING_METHOD" == "raw" ]; then
        echo "You may only use alternate core collectors with the NFS and Local Filesystem targets"
        rm -rf $MNTIMAGE
        rm -rf $IMAGE
        exit 1
    fi 

    if [ -z "$USING_METHOD" ]
    then
        echo "Warning!  Lack of dump target specification means core_collector option is ignored!"
        CORE_COLLECTOR=""
    fi

fi


#START BUILDING INITRD HERE
mkdir -p $MNTIMAGE
mkdir -p $MNTIMAGE/lib
mkdir -p $MNTIMAGE/bin
mkdir -p $MNTIMAGE/etc
mkdir -p $MNTIMAGE/dev
mkdir -p $MNTIMAGE/proc
mkdir -p $MNTIMAGE/sys
mkdir -p $MNTIMAGE/tmp
mkdir -p $MNTIMAGE/sysroot
mkdir -p $MNTIMAGE/modules
mkdir -p $MNTIMAGE/usr/share/udhcpc
mkdir -p $MNTIMAGE/var/run
mkdir -p $MNTIMAGE/etc/network/if-pre-up.d
mkdir -p $MNTIMAGE/etc/network/if-up.d
mkdir -p $MNTIMAGE/etc/network/if-pre-down.d
mkdir -p $MNTIMAGE/etc/network/if-down.d
mkdir -p $MNTIMAGE/etc/network/if-post-down.d
ln -s bin $MNTIMAGE/sbin

#if we are using makedumpfile here, then generate the config file
if [ -n "$CORE_COLLECTOR" ]; then
    RUN_KERN_VER=`uname -r`
    if [ ! -f /usr/lib/debug/lib/modules/$RUN_KERN_VER/vmlinux ]
    then
        echo "kernel-debuginfo-$RUN_KERN_VER is not installed.  You need this to use makedumpfile!"
        echo "please install it and restart the kdump service"
        rm -rf $MNTIMAGE
        rm -rf $IMAGE
        exit 1
    fi
    /sbin/makedumpfile -g $MNTIMAGE/etc/makedumpfile.config -x
/usr/lib/debug/lib/modules/$RUN_KERN_VER/vmlinux > /dev/null 2>&1
    if [ $? != 0 ]; then
        echo "could not generate makedumpfile configuration.  aborting"
        rm -rf $MNTIMAGE
        rm -rf $IMAGE
        exit 1;
    fi
fi
#copy in busybox and make symlinks to its supported utilities
cp /sbin/busybox $MNTIMAGE/sbin/busybox
cd $MNTIMAGE/sbin
for i in `/sbin/busybox | 
        awk 'BEGIN {found=0} /.*/ { if (found) print $0 } /Currently/ {found=1}' | 
        sed -e's/,//g' -e's/busybox//g'`
do
        ln -s busybox $MNTIMAGE/sbin/$i
done
cd - > /dev/null 2>&1

#THIS IS WHERE WE GENERATE OUR ADDITINONAL UTILITIES
#Busybox doesn't have a /bin/sh applet, 
#so we build a reasonable faximilie here
cat >> $MNTIMAGE/bin/sh << EOF
#!/bin/msh
#drop the -c from the command line
shift 1
#now execute the passed command
#don't exec this or $@ won't work
/bin/msh -c "\$@"
EOF

chmod 755 $MNTIMAGE/bin/sh

cat >> $MNTIMAGE/usr/share/udhcpc/default.script << EOF
#!/bin/msh
[ -z "\$1" ] && echo "Error: should be called from udhcpc" && exit 1


case "\$1" in
    deconfig)
        /sbin/ifconfig \$interface 0.0.0.0
        ;;

    renew|bound)
        /sbin/ifconfig \$interface \$ip netmask \$subnet

        if [ -n "\$router" ] ; then
            echo "deleting routers"
            while route del default gw 0.0.0.0 dev \$interface ; do
                :
            done

            for i in \$router ; do
                route add default gw \$i dev \$interface
            done
        fi

        echo -n > /etc/resolv.conf 
        [ -n "\$domain" ] && echo search $domain >> /etc/resolv.conf 
        for i in \$dns ; do
            echo adding dns \$i
            echo nameserver \$i >> /etc/resolv.conf 
        done
        ;;
esac

exit 0
EOF

#NETWORKING SCRIPT DIRECTORIES
cat >> $MNTIMAGE/etc/network/if-pre-up.d/pre-up-script << EOF
#!/bin/msh
PATH=\$PATH:/scriptfns
. /etc/ifcfg-\$IFACE

LINK_DELAY=$LINK_DELAY
if [ "\$BUS_ID" != "Vlan" ]
then
    ifconfig \$IFACE up
    if [ -n "\$LINK_DELAY" ]
    then
        echo "\$IFACE Link Up.  Waiting \$LINK_DELAY Seconds"
        sleep \$LINK_DELAY
        echo "Continuing"
    fi
fi

if [ "\$BUS_ID" == "Bonding" ]
then
    #this is a bond find and bring up the slaves
    echo searching for slaves
    find_activate_slaves \$IFACE
elif [ "\$BUS_ID" == "Vlan" ]
then
    #bring up the base interface first
    BASE_DEV=\`echo \$IFACE | cut -d"." -f1\`
    VLAN_ID=\`echo \$IFACE | cut -d"." -f2\`
    ifconfig \$BASE_DEV up
    if [ -n "\$LINK_DELAY" ]
    then
        echo "\$IFACE Link Up.  Waiting \$LINK_DELAY Seconds"
        sleep \$LINK_DELAY
        echo "Continuing"
    fi  
    vconfig add \$BASE_DEV \$VLAN_ID
    ifconfig \$IFACE up
fi
exit 0
EOF

for i in `ls $MNTIMAGE/etc/network/if-pre-up.d`
do
    chmod 755 $MNTIMAGE/etc/network/if-pre-up.d/$i
done

cat >> $MNTIMAGE/etc/network/if-up.d/up-script << EOF
#!/bin/msh
PATH=\$PATH:/scriptfns
if [ "\$METHOD" != "dhcp" ]
then
    . /etc/ifcfg-\$IFACE
    ifconfig \$IFACE \$IPADDR netmask \$NETMASK
    route add default gw \$GATEWAY dev \$IFACE
fi
exit 0
EOF

for i in `ls $MNTIMAGE/etc/network/if-up.d`
do
    chmod 755 $MNTIMAGE/etc/network/if-up.d/$i
done

chmod 755 $MNTIMAGE/usr/share/udhcpc/default.script

# WE DONT HAVE FUNCTIONS AVAILABLE IN MSH
# SO WE IMPLEMENT THEM HERE AS scripts
SCRIPTDIR=$MNTIMAGE/scriptfns
mkdir -p $SCRIPTDIR

cat >> $SCRIPTDIR/map_interface << EOF
#!/bin/msh
if [ -e /tmp/tmpcnt ]
then
    TMPCNT=\`cat /tmp/tmpcnt\`
else
    TMPCNT=0
fi
#erase previously recorded map
RENAMED=""
REAL_DEV=""
NETDEV=\$1
. /etc/ifcfg-\$NETDEV
for j in \`ifconfig -a | awk '/.*Link encap.*/ {print \$1}'\`
do
    case "\$BUS_ID" in
    Bonding)
        REAL_DEV=bond0
        RENAMED="yes"
        ;;
    Vlan)
        BASE_DEV=\`echo \$NETDEV | cut -d"." -f1\`
        VLAN_ID=\`echo \$NETDEV | cut -d"." -f2\`
        REAL_BASE=\`grep "^\$BASE_DEV " /etc/iface_map | cut -d" " -f2\` 
        #Note we add the \ to our vlan values to escape the . for sed-ability
        #Note we also convert . to _ to avoid problems with busybox ifup
        REAL_DEV=\$REAL_BASE\\\\.\$VLAN_ID
        NETDEV=\$BASE_DEV\\\\.\$VLAN_ID
        RENAMED="yes"
        ;;
    *)
        INFO=\`ls -l /sys/class/net/\$j/device 2>/dev/null |  sed -e's/\\(.*\\/\\)\\(.*$\\)/\\2/'\`
        if [ "\$INFO" == "\$BUS_ID" -a -z "\$REAL_DEV" ]
        then
            REAL_DEV=\$j
            RENAMED="yes"
        fi
        ;;
    esac
done

if [ -z "\$RENAMED" ]
then
    echo "Could not find a mapping for device \$NETDEV"
    exit 1
fi

#build the interface rename map
echo \$NETDEV \$REAL_DEV tmp\$TMPCNT >> /etc/iface_map
TMPCNT=\`echo \$TMPCNT 1 + p | dc\`
echo \$TMPCNT > /tmp/tmpcnt
echo mapping \$NETDEV to \$REAL_DEV
EOF

cat >> $SCRIPTDIR/rename_interfaces << EOF
#!/bin/msh
MAP_COUNT=\`wc -l /etc/iface_map | cut -d" " -f7 \`
#now do all the renaming - first to temp space
for j in \`seq 1 1 \$MAP_COUNT\`
do
    CURRENT=\`awk -v MATCH=\$j '{if (NR == MATCH) print \$1}' /etc/iface_map\`
    NEW=\`awk -v MATCH=\$j '{if (NR == MATCH) print \$2}' /etc/iface_map\`
    INTERIM=\`awk -v MATCH=\$j '{if (NR == MATCH) print \$3}' /etc/iface_map\`
    mv /etc/ifcfg-\$CURRENT /etc/ifcfg-\$INTERIM
    for i in /etc/ifcfg-\$INTERIM /etc/iface_to_activate /etc/network/interfaces
    do
        # the double quotes lets us expand the variables
        sed -e"s/\$CURRENT/\$INTERIM/g" \$i > \$i.tmp
        mv \$i.tmp \$i
    done
done
 

for j in \`seq 1 1 \$MAP_COUNT\`
do
    CURRENT=\`awk -v MATCH=\$j '{if (NR == MATCH)  print \$1}' /etc/iface_map\`
    NEW=\`awk -v MATCH=\$j '{if (NR == MATCH) print \$2}' /etc/iface_map\`
    INTERIM=\`awk -v MATCH=\$j '{if (NR == MATCH) print \$3}' /etc/iface_map\`
    mv /etc/ifcfg-\$INTERIM /etc/ifcfg-\$NEW
    for i in /etc/ifcfg-\$NEW /etc/iface_to_activate /etc/network/interfaces
    do
        # the double quotes lets us expand the variables
        sed -e"s/\$INTERIM/\$NEW/g" \$i > \$i.tmp
        mv \$i.tmp \$i
    done
done < /etc/iface_map

exit 0
EOF

cat >> $SCRIPTDIR/find_activate_slaves << EOF
#!/bin/msh
BOND_MASTER=\$1

for j in \`ifconfig -a | awk '/.*Link encap.*/ {print \$1}'\`
do
    MASTER=""
    . /etc/ifcfg-\$j
    if [ "\$MASTER" == "\$BOND_MASTER" ]
    then
        #this is a slave of the rising interface
        echo enslaving \$j to \$BOND_MASTER
        echo +\$j > /sys/class/net/\$BOND_MASTER/bonding/slaves
    fi
done
EOF

#DONT ADD STUFF to SCRIPTDIR PAST HERE
for i in `ls $SCRIPTDIR/*`
do
    chmod 755 $i
done

if [ -e /etc/fstab.sys ]; then
    inst /etc/fstab.sys "$MNTIMAGE/etc/fstab.sys"
fi

#build a good passwd file
cat >> $MNTIMAGE/etc/passwd << EOF
root:x:0:0:root:/root:/bin/bash
EOF

for MODULE in $MODULES; do
    if [ -x /usr/bin/strip ]; then
	/usr/bin/strip -g $verbose $MODULE -o $MNTIMAGE/lib/$(basename $MODULE)
    else
	cp $verbose -a $MODULE $MNTIMAGE/lib
    fi
done

# mknod'ing the devices instead of copying them works both with and
# without devfs...
mkdir $MNTIMAGE/dev/mapper

mknod $MNTIMAGE/dev/ram0 b 1 0
mknod $MNTIMAGE/dev/ram1 b 1 1
ln -sf ram1 $MNTIMAGE/dev/ram

mknod $MNTIMAGE/dev/null c 1 3
mknod $MNTIMAGE/dev/zero c 1 5
mknod $MNTIMAGE/dev/systty c 4 0
for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 ; do
    mknod $MNTIMAGE/dev/tty$i c 4 $i
done
for i in 0 1 2 3 ; do
    mknod $MNTIMAGE/dev/ttyS$i c 4 $(($i + 64))
done
mknod $MNTIMAGE/dev/tty c 5 0
mknod $MNTIMAGE/dev/console c 5 1
mknod $MNTIMAGE/dev/ptmx c 5 2
mknod $MNTIMAGE/dev/rtc c 10 135
if [ "$(uname -m)" == "ia64" ]; then
    mknod $MNTIMAGE/dev/efirtc c 10 136
fi

# FIXME -- this can really go poorly with clvm or duplicate vg names.
# nash should do lvm probing for us and write its own configs.
if [ -n "$vg_list" ]; then
    inst /sbin/lvm.static "$MNTIMAGE/bin/lvm"
    if [ -f /etc/lvm/lvm.conf ]; then
	cp $verbose --parents /etc/lvm/lvm.conf $MNTIMAGE/
    fi
fi

echo -n >| $RCFILE
cat >> $MNTIMAGE/init << EOF
#!/bin/msh
export PATH=$PATH:/scriptfns
mount -t proc /proc /proc
echo Mounting proc filesystem
echo Mounting sysfs filesystem
mount -t sysfs /sys /sys
echo 1 > /proc/sys/vm/dirty_background_ratio
echo 5 > /proc/sys/vm/dirty_ratio
echo 10 > /proc/sys/vm/dirty_writeback_centisecs
echo 50 > /proc/sys/vm/dirty_expire_centisecs
echo Creating /dev
mount -o mode=0755 -t tmpfs /dev /dev
mkdir /dev/pts
mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
mkdir /dev/shm
mkdir /dev/mapper
echo Creating initial device nodes
mknod /dev/null c 1 3
mknod /dev/zero c 1 5
mknod /dev/systty c 4 0
mknod /dev/tty c 5 0
mknod /dev/console c 5 1
mknod /dev/ptmx c 5 2
mknod /dev/rtc c 10 135
mknod /dev/urandom c 1 9
EOF
if [ "$(uname -m)" == "ia64" ]; then
    emit "mknod $MNTIMAGE/dev/efirtc c 10 136"
fi

# XXX really we need to openvt too, in case someting changes the
# color palette and then changes vts on fbcon before gettys start.
# (yay, fbcon bugs!)
for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 ; do
    emit "mknod /dev/tty$i c 4 $i"
done

for i in 0 1 2 3 ; do
    emit "mknod /dev/ttyS$i c 4 $(($i + 64))"
done
emit "mknod /dev/mem c 1 1"
for MODULE in $MODULES; do
    text=""
    module=`echo $MODULE | sed "s|.*/||" | sed "s/.k\?o$//"`
    fullmodule=`echo $MODULE | sed "s|.*/||"`

    options=`sed -n -e "s/^options[ 	][ 	]*$module[ 	][ 	]*//p" $modulefile 2>/dev/null`

    if [ -n "$options" ]; then
        vecho "Adding module $module$text with options $options"
    else
        vecho "Adding module $module$text"
    fi
    emit "echo \"Loading $fullmodule module\""
    emit "insmod /lib/$fullmodule $options"

    # Hack - we need a delay after loading usb-storage to give things
    #        time to settle down before we start looking a block devices
    if [ "$module" = "usb-storage" ]; then
	emit "echo Waiting 8 seconds for driver initialization."
	emit "sleep 8"
    fi
    if [ "$module" = "zfcp" -a -f /etc/zfcp.conf ]; then
	emit "echo Waiting 2 seconds for driver initialization."
        emit "sleep 2"
        cat /etc/zfcp.conf | grep -v "^#" | tr "A-Z" "a-z" | while read DEVICE SCSIID WWPN SCSILUN FCPLUN; do
        cemit <<EOF 
echo -n $WWPN > /sys/bus/ccw/drivers/zfcp/${DEVICE/0x/}/port_add
echo -n $FCPLUN > /sys/bus/ccw/drivers/zfcp/${DEVICE/0x/}/$WWPN/unit_add
echo -n 1 > /sys/bus/ccw/drivers/zfcp/${DEVICE/0x/}/online
EOF
        done
    fi
done

# HACK: module loading + device creation isn't necessarily synchronous...
# this will make sure that we have all of our devices before trying
# things like RAID or LVM
emit "echo Creating Block Devices"
emit "for i in \`ls /sys/block\`; do"
emit "  MAJOR_NUM=\`cat /sys/block/\$i/dev | cut -d":" -f1\`"
emit "  MINOR_NUM=\`cat /sys/block/\$i/dev | cut -d":" -f2\`"
emit "  MINOR_RANGE=\`cat /sys/block/\$i/range | cut -d":" -f2\`"
emit "  echo Creating block device \$i"
emit "  mknod /dev/\$i b \$MAJOR_NUM \$MINOR_NUM"
emit "  if [ \"\$MINOR_RANGE\" -gt 1 ]"
emit "  then"
emit "    MINOR_END=\`echo \$MINOR_NUM \$MINOR_RANGE + p | dc\`"
emit "    MINOR_START=\`echo \$MINOR_NUM 1 + p | dc\`"
emit "    PART_NUM=1"
emit "    for j in \`seq \$MINOR_START 1 \$MINOR_END\`"
emit "    do"
emit "       if [ ! -e /dev/\$i\$PART_NUM ]"
emit "       then"
emit "            mknod /dev/\$i\$PART_NUM b \$MAJOR_NUM \$j"
emit "       fi"
emit "       PART_NUM=\`expr \$PART_NUM + 1\`"
emit "    done"
emit "  fi"
emit "done"

if [ -n "$vg_list" ]; then
    emit "echo Making device-mapper control node"
    emit "DM_MAJ=\`cat /proc/devices | grep misc | cut -d\" \" -f2\`"
    emit "DM_MIN=\`cat /proc/misc | grep device-mapper | cut -d\" \" -f2\`"
    emit "mknod /dev/mapper/control b \$DM_MAJ \$DM_MIN"
fi

if [ -n "$net_list" ]; then
    for netdev in $net_list; do 
	emit "echo Bringing up $netdev"
	handle_netdev $netdev
	#emit $network
    done
fi

emitdms

if [ -n "$raiddevices" ]; then
    for dev in $raiddevices; do
	cp -a /dev/${dev} $MNTIMAGE/dev
	emit "\#need code here to set up md devs"
    done
fi

if [ -n "$vg_list" ]; then
    emit "echo Scanning logical volumes"
    emit "lvm vgscan --ignorelockingfailure --mknodes"
    emit "echo Activating logical volumes"
    emit "lvm vgchange -a y --ignorelockingfailure"
    emit "DM_NUM=0"
    emit "for i in \`lvm lvs | awk '{ if (NR > 1) print \$1}'\`"
    emit "do"
    emit "   VGRP=\`lvm lvs | grep \$i | cut -d\" \" -f4\`"
    emit "   mkdir -p /dev/\$VGRP"
    emit "   if [ ! -e /dev/\$VGRP/\$i ]"
    emit "   then" 
    emit "      ln -s /dev/mapper/\$VGRP-\$i /dev/\$VGRP/\$i"
    emit "      ln -s /dev/mapper/\$VGRP-\$i /dev/dm-\$DM_NUM"
    emit "      DM_NUM=\`echo \$DM_NUM 1 + p | dc\`"
    emit "      if [ -z \"\$noresume\" ]"
    emit "      then"
    emit "        /sbin/dmsetup.static resume /dev/mapper/\$VGRP-\$i"
    emit "      fi"
    emit "   fi"
    emit "done"
fi

kdump_chk()
{
    rc=`eval $1` && return $rc
    echo "$KDUMP_CONFIG_FILE: $2"
    exit 1
}
if [ -n "$KDUMP_CONFIG_FILE" ]; then
    memtotal=`cat /proc/meminfo | grep MemTotal | awk '{print $2}'`
    
    #timezone info for date which outputs YYYY-MM-DD-hh:mm
    cp /etc/localtime $MNTIMAGE/etc/localtime
    cp /etc/sysconfig/clock $MNTIMAGE/etc
    emit ". /etc/clock"
    emit " if [ \"\$UTC\" == "true" ]"
    emit " then"
    emit "    TIME_FORMAT=-u"
    emit " else"
    emit "    TIME_FORMAT=-l"
    emit "fi"
    emit "hwclock --hctosys \$TIME_FORMAT"
    emit "DATE=\`date +%Y-%m-%d-%T\`"

    bin="/sbin/dmsetup.static /sbin/kpartx.static" 

    if [ -n "$CORE_COLLECTOR" ]; then
        bin="$bin /sbin/makedumpfile"
    fi

    #ssh, scp require libraries that aren't found with ldd
    ARCH=`uname -m`
    lib=/lib && [ -d "/lib64" -a "$ARCH" != "ppc64" ] && lib=/lib64
    k_extras="/$lib/libnss_compat.so.2 /$lib/libnss_files.so.2"

    #traverse the config file and setup each dump location
    while read type location; do
            [ -z "$type" ] && continue  #skip empty lines
            [ "`echo $type| grep ^# `" ] && continue #skip comments
            kdump_chk "test -n \"$location\"" "Need a location for $type"

            case "$type" in
                \#*) continue;;    #skip comments

                raw)
                    #test raw partition
                    kdump_chk "dd if=$location count=1 of=/dev/null > /dev/null 2>&1" \
                               "Bad raw partition $location"
                    #check for available size is greater than $memtotal
                    available_size=$(fdisk -s $location)
                    if [ $available_size -lt $memtotal ]; then
                        echo "Warning: There is not space enough to save a vmcore."
                        echo "         The size of $location should be much greater than $memtotal bytes."
                    fi

                    #setup raw case
                    emit "echo Saving to partition $location"
                    emit "dd if=/proc/vmcore of=$location"
                    emit "if [ \$? == 0 ]"
                    emit "then"
                    emit "  reboot -f"
                    emit "fi"
                    ;;

                net)
                    #build an /etc/passwd for scp to work properly
                    grep "^root" /etc/passwd > $MNTIMAGE/etc/passwd

                    # bring up the network
                    emit "for i in \`ls /etc/ifcfg-*\`"
                    emit "do"
                    emit "   NETDEV=\`echo \$i | cut -d\"-\" -f2\`"
                    emit "   map_interface \$NETDEV"
                    emit "done"
                    emit "rename_interfaces"
                    emit "IFACE=\`cat /etc/iface_to_activate\`"
                    emit "ifup \$IFACE"
                    #lets make sure we're up
                    emit "IFADDR=\`ifconfig \$IFACE | awk '/inet addr/ {print \$2}' | cut -d\":\" -f 2\`"
                    emit "if [ -z \"\$IFADDR\" ]"
                    emit "then"
                    emit "  echo \"\$IFACE failed to come up\""
                    if [ "$DEFAULT_ACTION" == "shell" ]
                    then
                        emit "  echo \"Dropping to shell. exit to reboot\""
                        emit "  /bin/msh"
                        emit "  reboot -f"
                    elif [ "$DEFAULT_ACTION" == "reboot" ]
                    then
                        emit "  reboot -f"
                    fi 
                    emit "fi"
                    #grab remote host and xlate into numbers
                    rhost=`echo $location | sed 's/.*@//' | cut -d':' -f1`
                    need_dns=`echo $rhost|grep [a-zA-Z]`
                    [ -n "$need_dns" ] && rhost=`host $rhost|cut -d' ' -f4`

                    #find the local ip being used as a route to remote ip
                    netdev=`/sbin/ip route get to $rhost 2>&1`
                    [ $? != 0 ] && echo "Bad kdump location: $location" && exit 1 
                    OFF_SUBNET=`echo $netdev | grep via`
                    if [ -n "$OFF_SUBNET" ]
                    then
                        # we are going to a different subnet
                        lhost=`echo $netdev|awk '{print $7}'|head -n 1`
                    else
                        # we are on the same subnet
                        lhost=`echo $netdev|awk '{print $5}'|head -n 1`
                    fi
 
                    emit "echo Saving to remote location $location"
                    if [ -z "`echo $location|grep @`" ]; then
                        #NFS path
                        #test nfs mount and directory creation
                        rlocation=`echo $location| sed 's/.*:/'"$rhost"':/'`
                        tmnt=`mktemp -dq`
                        kdump_chk "mount -t nfs -o nolock $rlocation $tmnt" \
                                   "Bad NFS mount $location"
                        mkdir -p $tmnt/$SAVE_PATH
                        tdir=`mktemp -dqp $tmnt/$SAVE_PATH`
                        available_size=$(df $tdir | tail -1 | tr -s ' ' ':' | cut -d: -f4)

                        rc=$? && rm -rf $tdir 
                        umount $tmnt
                        if [ $? != 0 ]; then
                            echo "Cannot unmount the temporary directory"
                            exit 1
                        fi
                        rm -rf $tmnt
                        if [ $rc != "0" ]; then 
                            echo "Cannot create directory in $location: $SAVE_PATH"
                            exit 1 
                        fi

                        if [ -z "$CORE_COLLECTOR" ]; then
                            CORE_COLLECTOR="cp"
                        fi

                        #check for available size is greater than $memtotal
                        if [ $available_size -lt $memtotal ]; then
                            echo "Warning: There is not space enough to save a vmcore."
                            echo "         The size of $location should be much greater than $memtotal bytes."
                        fi
    
                        #setup nfs case
                        mkdir -p $MNTIMAGE/mnt
                        emit "mount -t nfs -o nolock $rlocation /mnt"
                        emit "if [ \$? == 0 ]"
                        emit "then"
                        emit "  mkdir -p /mnt/$SAVE_PATH/$lhost-\$DATE"
                        emit "  $CORE_COLLECTOR /proc/vmcore /mnt/$SAVE_PATH/$lhost-\$DATE/vmcore-incomplete"
                        emit "  if [ \$? == 0 ]"
                        emit "  then"
                        emit "      mv /mnt/$SAVE_PATH/$lhost-\$DATE/vmcore-incomplete /mnt/$SAVE_PATH/$lhost-\$DATE/vmcore"
                        emit "      umount /mnt"
                        emit "      reboot -f"
                        emit "  fi"
                        emit "  umount /mnt"
                        emit "fi"
                    else
                        #SSH path
                        #rebuild $location replacing machine name with ip address
                        bin="$bin /usr/bin/ssh /usr/bin/scp"
                        rlocation=`echo $location|sed 's/@.*/@'"$rhost"'/'`
                        #test ssh path and directory creation
                        s_opts="-o BatchMode=yes -o StrictHostKeyChecking=no"
                        kdump_chk "ssh -q $s_opts $rlocation mkdir -p $SAVE_PATH </dev/null" \
                                "Could not create $location:$SAVE_PATH, you probably need to run \"service kdump propagate\""
                        tdir=`ssh -q $s_opts $rlocation mktemp -dqp $SAVE_PATH </dev/null`
                        if [ $? != "0" ]; then
                            echo "$KDUMP_CONFIG_FILE: Could not create temp directory in $location:$SAVE_PATH"
                            exit 1
                        fi
                        remote_df=`ssh -q $s_opts $rlocation df $tdir`
                        available_size=$(echo $remote_df | tail -1 | tr -s ' ' '|' | cut -d\| -f10)
                       
                        #check for available size is greater than $memtotal
                        if [ $available_size -lt $memtotal ]; then
                            echo "Warning: There is not space enough to save a vmcore."
                            echo "         The size of $rlocation:$tdir should be much greater than $memtotal bytes."
                        fi
                        #We do this to remove the temp directory from above
                        ssh -q $s_opts $rlocation rmdir $tdir

                        #setup ssh case, quick check to see if setup already
                        if [ ! -r $MNTIMAGE/dev/urandom ]; then
                            #only need to do these once
                            mkdir -p $MNTIMAGE/root
                            cp -a /root/.ssh $MNTIMAGE/root/
                            cp -a /etc/ssh $MNTIMAGE/etc
                            mknod $MNTIMAGE/dev/urandom c 1 9
                        fi
                        emit "dd if=/dev/mem of=/dev/urandom count=1 bs=512 skip=100" 
                        emit "ssh -q -o BatchMode=yes -o StrictHostKeyChecking=no $rlocation mkdir $SAVE_PATH/$lhost-\$DATE"
                        emit "scp -q -o BatchMode=yes -o StrictHostKeyChecking=no /proc/vmcore $rlocation:$SAVE_PATH/$lhost-\$DATE/vmcore-incomplete"
                        emit "if [ \$? == 0 ]"
                        emit "then"
                        emit "  ssh -q -o BatchMode=yes -o StrictHostKeyChecking=no $rlocation mv $SAVE_PATH/$lhost-\$DATE/vmcore-incomplete $SAVE_PATH/$lhost-\$DATE/vmcore"
                        emit "  reboot -f"
                        emit "fi"
                    fi
                    ;;
                core_collector)
                    ;;
                default)
                    ;;
                link_delay)
                    ;;
                path)
                    ;;
                *)
                    #test filesystem and directory creation
                    kdump_chk "test -f /sbin/fsck.$type" "Unsupported type $type"
                    tmnt=`mktemp -dq`
                    kdump_chk "mount -t $type $location $tmnt" "Bad mount point $location"
                    mkdir -p $tmnt/$SAVE_PATH
                    tdir=`mktemp -dqp $tmnt/$SAVE_PATH`
                    available_size=$(df $tdir | tail -1 | tr -s ' ' ':' | cut -d: -f4)
                    rc=$? && rm -rf $tdir && umount $tmnt
                    if [ $rc != "0" ]; then 
                        echo "Cannot create directory in $location: $SAVE_PATH"
                        exit 1
                    fi
                    #check for available size is greater than $memtotal
                    if [ $available_size -lt $memtotal ]; then
                        echo "Warning: There is not space enough to save a vmcore."
                        echo "         The size of $location should be much greater than $memtotal bytes."
                    fi

    
                    #setup filesystem case
                    mkdir -p $MNTIMAGE/mnt
		    touch $MNTIMAGE/etc/mtab
                    if [ -z "$CORE_COLLECTOR" ]; then
                        CORE_COLLECTOR="cp"
                    fi
                    emit "echo Saving to the local filesystem $location"
                    emit "DUMPDEV=$location"
                    emit "IS_LABEL=\`echo \$DUMPDEV | grep LABEL\`"
                    emit "IS_UUID=\`echo \$DUMPDEV | grep UUID\`"
                    emit "if [ -n \"\$IS_LABEL\" -o -n \"\$IS_UUID\" ] "
                    emit "then"
                    emit "  DUMPDEV=\`findfs \$DUMPDEV\`"
                    emit "fi"
                    emit "fsck.$type \$DUMPDEV"
                    emit "mount -t $type \$DUMPDEV /mnt"
                    emit "if [ \$? == 0 ]"
                    emit "then"
                    emit "  mkdir -p /mnt/$SAVE_PATH/127.0.0.1-\$DATE"
                    emit "  $CORE_COLLECTOR /proc/vmcore /mnt/$SAVE_PATH/127.0.0.1-\$DATE/vmcore-incomplete"
                    emit "  if [ \$? == 0 ]"
                    emit "  then"
                    emit "      mv /mnt/$SAVE_PATH/127.0.0.1-\$DATE/vmcore-incomplete /mnt/$SAVE_PATH/127.0.0.1-\$DATE/vmcore"
                    emit "      umount /mnt"
                    emit "      reboot -f"
                    emit "  fi"
                    emit "fi"
                    emit "umount /mnt"
                    ;;
            esac
    done < $KDUMP_CONFIG_FILE

    #now handle the default action
    if [ "$DEFAULT_ACTION" == "shell" ]
    then
        emit "echo dropping to initramfs shell"
        emit "echo exiting this shell will reboot your system"
        emit "/bin/msh"
        emit "reboot -f"
    elif [ "$DEFAULT_ACTION" == "reboot" ]
    then
        emit "reboot -f"
    fi
                    
    #find the shared libraries.  this snippet taken from kboot
    kdump_libs=`for n in $bin; do 
        ldd "$n" 2>/dev/null | tr -s '\011' ' ' | 
        sed 's/.*=> *//;s/^ *//;/ *(0x.*)/s///p;d' 
    done | sort | uniq | sed '/^ *$/d'`

    #copy the binaries and their shared libraries to the archive
    for n in $bin $kdump_libs $k_extras; do
        mkdir -p $MNTIMAGE/`dirname $n`
        cp $n $MNTIMAGE/$n
    done
fi

emit "echo Creating root device."
emit "#check to see if we have root= on the command line"
emit "ROOTDEV=\`cat /proc/cmdline | grep root=\`"
emit "if [ -n \"\$ROOTDEV\" ]"
emit "then"
emit "   ROOTDEV=\`cat /proc/cmdline | sed 's/^.*root=//' | cut -d\" \" -f1\`"
emit "   IS_LABEL=\`echo \$ROOTDEV | grep LABEL\`"
emit "   IS_UUID=\`echo \$ROOTDEV | grep UUID\`"
emit "   if [ -n \"\$IS_LABEL\" -o -n \"\$IS_UUID\" ] "
emit "   then"
emit "      ROOTDEV=\`findfs \$ROOTDEV\`"
emit "   fi"
emit "else"
emit "   #we need to get the root major/minor from real-root-dev"
emit "   ROOT_DEV_NR=\`cat /proc/sys/kernel/real-root-dev\`"
emit "   ROOT_MIN=\`echo \$ROOT_DEV_NR | sed -e's/\\([0-9a-f]\\{1,2\\}\\)\\([0-9a-f]\\{2\\}\\)/\\2/'\`"
emit "   ROOT_MAJ=\`echo \$ROOT_DEV_NR | sed -e's/\\([0-9a-f]\\{1,2\\}\\)\\([0-9a-f]\\{2\\}\\)/\\1/'\`"
emit "   mknod /dev/rootdev b 0x\$ROOT_MAJ 0x\$ROOT_MIN"
emit "   ROOTDEV=/dev/rootdev"
emit "fi"

emit "echo Checking root filesystem."
emit "fsck \$ROOTDEV"
emit "echo Mounting root filesystem."
emit "FSTYPE=\`fsck -N \$ROOTDEV | awk '/.*sbin.*/ {print \$1}' | sed -e's/\\(^.*\\.\\)\\(.*\\)/\\2/'\`"
emit "fsck -t \$FSTYPE \$ROOTDEV"
emit "echo mount -t \$FSTYPE \$ROOTDEV /sysroot"
emit "mount -t \$FSTYPE \$ROOTDEV /sysroot"
emit "if [ \$? != 0 ]"
emit "then"
emit "   echo unable to mount rootfs. Dropping to shell"
emit "   /bin/msh"
emit "fi"

emit "#move various filesystems and prime the rootfs to boot properly"
emit "umount /proc"
emit "mount -t proc proc /sysroot/proc"
emit "umount /sys"
emit "mount -t sysfs sysfs /sysroot/sys"
emit "mount -o bind /dev /sysroot/dev"
emit "touch /sysroot/fastboot"
emit "echo Switching to new root and running init."
emit "exec switch_root /sysroot /sbin/init"

chmod +x $RCFILE

(cd $MNTIMAGE; findall . | cpio --quiet -c -o) >| $IMAGE || exit 1

if [ -n "$compress" ]; then
    gzip -9 < $IMAGE >| $target || rc=1
else
    cp -a $IMAGE $target || rc=1
fi
rm -rf $MNTIMAGE $IMAGE
if [ -n "$MNTPOINT" ]; then rm -rf $MNTPOINT ; fi
exit $rc