#!/usr/bin/env perl
BEGIN
{
    $::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : '/opt/xcat';
}
use lib "$::XCATROOT/lib/perl";

use File::Basename;
use File::Path;
use File::Copy qw/copy cp mv move/;
use File::Find;
use Getopt::Long;
use Cwd qw(realpath);
use File::Temp qw/mkdtemp/;

use FindBin;
use lib "$FindBin::Bin/../imgutils";
use imgutils;

#use strict;
Getopt::Long::Configure("bundling");
Getopt::Long::Configure("pass_through");

my $dracutmode;    #Indicate whether this is a dracut style initrd
my $dracutdir = "dracut";    # The default directory name of dracut
my $dracutver;
my $prinic;                  #TODO be flexible on node primary nic
my $othernics;               #TODO be flexible on node primary nic
my $netdriver;
my @yumdirs;
my $arch;
my %libhash;
my @filestoadd;
my $profile;
my $osver;
my $pathtofiles = dirname($0);
my $fullpath    = realpath($pathtofiles);
my $name        = basename($0);
my $onlyinitrd  = 0;

#that this method of calling genimage is no longer used
if ($name =~ /geninitrd/) {
    $onlyinitrd = 1;
}
my $rootlimit;
my $tmplimit;
my $installroot = "/install";
my $kerneldir;
my $kernelver = "";
my $basekernelver;
my $customdir = $fullpath;
$customdir =~ s/.*share\/xcat/$installroot\/custom/;
my $imagename;
my $pkglist;
my $srcdir;
my $destdir;
my $srcdir_otherpkgs;
my $otherpkglist;
my $postinstall_filename;
my $rootimg_dir;
my $mode;
my $permission;    #the permission works only for statelite mode currently
my $krpmver;
my $tempfile;
my $prompt;
my $timezone;      #the TIMEZONE of the stateless and statelite node
my $ignorekernelchk;
my $noupdate;

sub xdie {
    system("rm -rf /tmp/xcatinitrd.$$");
    die @_;
}

#-- fetch current version form CVS (overwrite locally changed versions)
# if (opendir(CVS,"$pathtofiles/CVS")){
#   close CVS;
#   my $cvsout = qx/cd $pathtofiles; cvs update -C 2>&1/;
#   chomp $cvsout;
#   if ( $cvsout ne "cvs update: Updating ." ) {
#     print "Difference of local copy from CVS detected\n";
#     print $cvsout,"\n";
#     print "Trying to re-run $name\n";
#     print("$pathtofiles/$name ",join(" ",@ARGV),"\n");
#     exec("$pathtofiles/$name",@ARGV);
#   }
# }


$SIG{INT} = $SIG{TERM} = sub { xdie "Interrupted" };
GetOptions(
    'a=s'               => \$arch,
    'p=s'               => \$profile,
    'o=s'               => \$osver,
    'n=s'               => \$netdriver,
    'i=s'               => \$prinic,
    'r=s'               => \$othernics,
    'l=s'               => \$rootlimit,
    't=s'               => \$tmplimit,
    'k=s'               => \$kernelver,
    'g=s'               => \$krpmver,
    'permission=s'      => \$permission,
    'kerneldir=s'       => \$kerneldir,
    'timezone=s'        => \$timezone,
    'tempfile=s'        => \$tempfile,                #internal flag
    'pkglist=s'         => \$pkglist,                 #internal flag
    'srcdir=s'          => \$srcdir,                  #internal flag
    'otherpkgdir=s'     => \$srcdir_otherpkgs,        #internal flag
    'otherpkglist=s'    => \$otherpkglist,            #internal flag
    'postinstall=s'     => \$postinstall_filename,    #internal flag
    'rootimgdir=s'      => \$destdir,                 #internal flag
    'driverupdatesrc=s' => \$driverupdatesrc,         #internal flag
    'interactive'       => \$prompt,
    'onlyinitrd'        => \$onlyinitrd,
    'ignorekernelchk'   => \$ignorekernelchk,
    'noupdate'          => \$noupdate,
);

if (@ARGV > 0) {
    $imagename = $ARGV[0];
}


my %updates_os = ();    # the hash for updating osimage table
my %updates    = ();    # the hash for updating linuximage table


$permission = "755" unless ($permission);
$updates{'permission'} = $permission if ($tempfile);

unless ($arch) {
    $arch = `uname -m`;
    chomp($arch);
    $arch = "x86" if ($arch =~ /i.86$/);
}

$srcdir = "$installroot/$osver/$arch" unless ($srcdir);
$updates{'pkgdir'} = $srcdir if ($tempfile);

#$srcdir = $srcdir . "/1";

$srcdir_otherpkgs = "$installroot/post/otherpkgs/$osver/$arch" unless ($srcdir_otherpkgs);
#$updates{'otherpkgdir'} = $srcdir_otherpkgs if ($tempfile);

$destdir = "$installroot/netboot/$osver/$arch/$profile" unless ($destdir);
$updates{'rootimgdir'} = $destdir if ($tempfile);

$rootimg_dir = "$destdir/rootimg";

if ($kernelver && (!$krpmver)) {
    print "The -g flag for the rpm version of kernel packages needs to be specified when kernel version has been specified.\n";
    exit 1;
}
$kerneldir = "$installroot/kernels" unless ($kerneldir); # the default directory for 3rd-party kernel is "$installroot/kernels";

#$updates{'kerneldir'} = $kerneldir if ($tempfile);

unless ($osver and $profile) {
    usage();
    exit 1;
}
my @ndrivers;

if ($netdriver) {
    foreach (split /,/, $netdriver) {
        if (/^allupdate$/) {
            next;
        }
        unless (/\.ko$/) {
            s/$/.ko/;
        }
        next if (/^$/);

        # Do not include qeth module here
        # This module is included later on
        unless ($_ =~ m/qeth/i) {
            push @ndrivers, $_;
        }
    }

    if (($updates{'netdrivers'} ne $netdriver) and $tempfile) {
        $updates{'netdrivers'} = $netdriver;
    }
}

# Add the default driver list
if ($arch eq 'x86' or $arch eq 'x86_64') {
    push @ndrivers, qw/tg3 bnx2 bnx2x e1000 e1000e virtio_net virtio_balloon igb mlx_en be2net/;
} elsif ($arch eq 'ppc64') {
    push @ndrivers, qw/tg3 e1000 e1000e igb ibmveth ehea be2net/;
} elsif ($arch eq "s390x") {
    push @ndrivers, qw/qdio ccwgroup qeth qeth_l2 qeth_l3/;
}

foreach (@ndrivers) {
    unless (/\.ko$/) {
        s/$/.ko/;
    }
}

unless (grep /af_packet/, @ndrivers) {
    unshift(@ndrivers, "af_packet.ko");
}

my $osver_host;
if (`grep VERSION /etc/SuSE-release` =~ /VERSION = (\d+)/) {
    $osver_host = $1;
} else {
    $osver_host = 11;
}

unless ($onlyinitrd) {

    # now, let's handle the extra packages
    unless ($imagename) {
        $otherpkglist = imgutils::get_profile_def_filename($osver, $profile, $arch, $customdir, "otherpkgs.pkglist");
        unless ($otherpkglist) { $otherpkglist = imgutils::get_profile_def_filename($osver, $profile, $arch, $pathtofiles, "otherpkgs.pkglist"); }
        $updates{'otherpkglist'} = $otherpkglist if ($tempfile and $otherpkglist);
    }
    my %extra_hash = ();
    %extra_hash = imgutils::get_package_names($otherpkglist) if ($otherpkglist);


    # prepare the chroot environment for the root image

    mkpath "$rootimg_dir/etc";
    mkpath "$rootimg_dir/dev";

    #system "mount -o bind /dev $rootimg_dir/dev";
    unless (-e "$rootimg_dir/dev/zero") {
        system "mknod $rootimg_dir/dev/zero c 1 5";
    }
    unless (-e "$rootimg_dir/dev/null") {
        system "mknod $rootimg_dir/dev/null c 1 3"; #that's neccessary for SLES11
    }

    unless (-e "$rootimg_dir/dev/random") {
        system "mknod $rootimg_dir/dev/random c 1 8"; #that's neccessary for SLES11
    }
    unless (-e "$rootimg_dir/dev/urandom") {
        system "mknod $rootimg_dir/dev/urandom c 1 9"; #that's neccessary for SLES11
    }

    for (my $i = 0 ; $i <= 12 ; $i++)
    {
        unless (-e "$rootimg_dir/dev/tty$i") {
            system "mknod $rootimg_dir/dev/tty$i c 4 $i"; #that's neccessary for SLES11
        }
    }

    open($fd, ">>", "$rootimg_dir/etc/fstab");    # TODO: is it necessary?
    print $fd "#Dummy fstab for rpm postscripts to see\n";
    close($fd);

    my $non_interactive;
    if (!$prompt) { $non_interactive = "--non-interactive --no-gpg-checks --gpg-auto-import-keys"; }

    if ($osver_host >= 11) {                      #zypper in SLES11 is different

        system("rm -rf $rootimg_dir/etc/zypp/repos.d/$osver-*.repo");
        my @pkgdirs = split(",", $srcdir);
        my $dir;
        my $i = 0;

        # To support multiple paths for osimage.pkgdir
        foreach $dir (@pkgdirs) {
            if (-d "$dir/1") {
                $dir .= "/1";
            }
            system("zypper -R $rootimg_dir $non_interactive ar file:$dir $osver-$i");
            $i++;
        }

        #if(-e "$rootimg_dir/etc/zypp/repos.d/$osver.repo") {
        #    system("rm -rf $rootimg_dir/etc/zypp/repos.d/$osver.repo");
        #}
        #system("zypper -R $rootimg_dir $non_interactive ar file:$srcdir $osver");
        #if(-e "$rootimg_dir/etc/zypp/repos.d/${osver}sdk.repo") {
        #    system("rm -rf $rootimg_dir/etc/zypp/repos.d/${osver}sdk.repo");
        #}
        if (opendir(SRCDIR, "$installroot/$osver/$arch/")) {
            while (my $tmpfile = readdir(SRCDIR)) {
                if ($tmpfile =~ m/^sdk/) {
                    my $srcdir_sdk = "$installroot/$osver/$arch/${tmpfile}";
                    if (-d "$srcdir_sdk") {
                        system("zypper -R $rootimg_dir $non_interactive ar file:$srcdir_sdk ${osver}${tmpfile}");
                    }
                }
            }
        }
    } else {
        $srcdir = $srcdir . "/1";
        system("zypper -R $rootimg_dir $non_interactive sa file:$srcdir");
    }

    # Add the rep for kernel packages
    if ($kernelver) {
        if (!-d $kerneldir) {
            print "Cannot find the directory for the kernel at $kerneldir.\n";
            exit 1;
        }
        if ($osver_host >= 11) {
            if (-e "$rootimg_dir/etc/zypp/repos.d/$kernelver.repo") {
                system("rm -rf $rootimg_dir/etc/zypp/repos.d/$kernelver.repo");
            }
            system("zypper -R $rootimg_dir $non_interactive ar file:$kerneldir $kernelver");
        } else {
            system("zypper -R $rootimg_dir $non_interactive sa file:$kerneldir");
        }
    }

    #remove the old repository for extra packages
    if ($osver_host >= 11) {
        my $result = `zypper -R $rootimg_dir $non_interactive lr |grep otherpkg|cut -f2 -d '|'|tr "\n" " "`;
        if ($result =~ /\S/) {
            system("zypper -R $rootimg_dir $non_interactive rr $result");
        }
    } else {
        my $result = `zypper -R $rootimg_dir $non_interactive sl |grep otherpkg|cut -f2 -d '|'|tr "\n" " "`;
        if ($result =~ /\S/) {
            system("zypper -R $rootimg_dir $non_interactive sd $result");
        }
    }

    #add the new repository for extra packages
    my %extrapkgnames;
    if ($osver_host >= 11) {    #SLES11
        if (-e "$rootimg_dir/etc/zypp/repos.d/otherpkg.repo") {
            system("rm -rf $rootimg_dir/etc/zypp/repos.d/otherpkg.repo");
        }
    }
    my $index = 1;
    my $pass;
    foreach $pass (sort { $a <=> $b } (keys(%extra_hash))) {
        foreach (keys(%{ $extra_hash{$pass} })) {

            if ($_ eq "INCLUDEBAD") {
                print "Unable to open the following pkglist files:\n" . join("\n", @{ $extra_hash{$pass}{INCLUDEBAD} });
                exit 1;
            }

            if (($_ eq "PRE_REMOVE") || ($_ eq "POST_REMOVE") || ($_ eq "ENVLIST")) { next; }
            my $whole_path = "$srcdir_otherpkgs/$_";
            if (-r "$srcdir_otherpkgs/$_/repodata/repomd.xml") {
                if ($osver_host >= 11) {
                    system("zypper -R $rootimg_dir $non_interactive ar file:$srcdir_otherpkgs/$_  otherpkg$index");
                } else {
                    system("zypper -R $rootimg_dir $non_interactive sa file:$srcdir_otherpkgs/$_");
                }
            } else {
                if ($osver_host >= 11) {
                    system("zypper -R $rootimg_dir $non_interactive ar -t Plaindir file:$srcdir_otherpkgs/$_  otherpkg$index");
                } else {
                    system("zypper -R $rootimg_dir $non_interactive sa -t Plaindir file:$srcdir_otherpkgs/$_");
                }
            }
            $index++;

            my $pa = $extra_hash{$pass}{$_};
            $extrapkgnames{$pass} .= " " . join(' ', @$pa);
        }
    }

    #-- add custom repositories to the image
    #TODO: should we add the support to otherpkgs for this? we have too many list files and it seems only SLES supports this
    # not sure, but it is convenient
    my $repolist;
    $repolist = imgutils::get_profile_def_filename($osver, $profile, $arch, $customdir, "repolist");
    unless ($repolist) {
        $repolist = imgutils::get_profile_def_filename($osver, $profile, $arch, $pathtofiles, "repolist");
    }

    if (-r "$repolist") {
        print "Reading custom repositories\n";
        open($repoconfig, "<", "$repolist");
        while (<$repoconfig>) {
            chomp;
            next if /^\s*#/;
            my ($repotype, $repourl, $repoalias) = split m/\|/;
            if ($osver_host >= 11) {
                system("zypper -R $rootimg_dir $non_interactive ar $repourl $repoalias");
            } else {
                system("zypper -R $rootimg_dir $non_interactive sa $repourl $repoalias");
            }
        }
    }

    # Refresh the zypper cache in case there is still old data out there
    system("zypper -R $rootimg_dir $non_interactive  refresh");

    #my $yumcmd = "yum -y -c /tmp/genimage.$$.yum.conf --installroot=$rootimg_dir --disablerepo=* ";
    #$yumcmd .= "install ";
    #mkpath("$rootimg_dir/var/lib/yum");
    my $yumcmd;
    if ($osver_host < 11) {
        $yumcmd = "zypper -R $rootimg_dir $non_interactive install ";
    } else {
        $yumcmd = "zypper -R $rootimg_dir $non_interactive install -l --no-recommends "; #add -l for SLES11
    }

    #install packages from pkglist file
    my $pkgnames;
    unless ($imagename) {
        $pkglist = imgutils::get_profile_def_filename($osver, $profile, $arch, $customdir, "pkglist");
        unless ($pkglist) { $pkglist = imgutils::get_profile_def_filename($osver, $profile, $arch, $pathtofiles, "pkglist"); }
    }

    if ($pkglist) {
        $updates{'pkglist'} = $pkglist if ($tempfile);
    } else {
        print "Unable to find package list for $profile!";
        exit 1;
    }

    my %pkg_hash = imgutils::get_package_names($pkglist);
    my $index    = 1;
    foreach $pass (sort { $a <=> $b } (keys(%pkg_hash))) {
        $pkgnames       = "";
        $group_pkgnames = "";
        foreach (keys(%{ $pkg_hash{$pass} })) {

            if ($_ eq "INCLUDEBAD") {
                print "Unable to open the following pkglist files:\n" . join("\n", @{ $pkg_hash{$pass}{INCLUDEBAD} });
                exit 1;
            }

            if (($_ eq "PRE_REMOVE") || ($_ eq "POST_REMOVE") || ($_ eq "ENVLIST")) { next; }
            my $pa = $pkg_hash{$pass}{$_};

            # replace the kernel package with the name has the specific version
            my @npa       = ();
            my @npa_group = ();
            foreach my $p (@$pa) {
                if ($p =~ /^kernel/ && $kernelver) {

                    # get all files in $srcdir and $kerneldir
                    my @alldirs = ("$srcdir", "$kerneldir");
                    my @allrpms = ();
                    foreach my $dir (@alldirs) {
                        my @files = `find $dir -name *.rpm`;
                        push @allrpms, @files;
                    }
                    my @kernelpkgs = ();
                    if ($p =~ /^kernel$/) {
                        @kernelpkgs = ("kernel-default", "kernel-default-base");
                    } elsif ($p =~ /^kernel-ppc64$/) {
                        @kernelpkgs = ($p, $p . "-base");
                    } else {
                        @kernelpkgs = ($p);
                    }
                    foreach my $kern (@kernelpkgs) {
                        my @rpm = grep /$kern-$krpmver/, @allrpms;
                        if (!@rpm) {
                            print "Cannot find the kernel package with the versioin $krpmver.\n";
                            exit 1;
                        }
                        my $kernelname = "$kern-" . $krpmver;
                        push @npa, $kernelname;
                    }
                } else {
                    if ($p =~ s/^@//)
                    {
                        push @npa_group, $p;
                    }
                    else
                    {
                        push @npa, $p;
                    }
                }
            }
            if (@npa) {
                $pkgnames .= " " . join(' ', @npa);
            }
            if (@npa_group) {
                $group_pkgnames .= " " . join(' ', @npa_group);
            }
        }
        my $envlist;
        if (exists $pkg_hash{$pass}{ENVLIST}) {
            $envlist = join(' ', @{ $pkg_hash{$pass}{ENVLIST} });
        }
        if ($pkgnames)
        {
            print "$envlist $yumcmd $pkgnames\n";
            $rc = system("$envlist $yumcmd $pkgnames");
            $rc = $rc >> 8;
            if (($rc) && ($rc != '104')) {
                print "zypper invocation failed with rc: $rc\n";
                exit 1;
            }
        }
        if ($group_pkgnames)
        {
            print "$envlist $yumcmd -t pattern $group_pkgnames\n";
            $rc = system("$envlist $yumcmd -t pattern $group_pkgnames");
            $rc = $rc >> 8;
            if (($rc) && ($rc != '104')) {
                print "zypper invocation failed with rc: $rc\n";
                exit 1;
            }
        }
    }

    foreach $pass (sort { $a <=> $b } (keys(%extra_hash))) {

        my $index = 1;

        #remove the old repository for extra packages
        if ($osver_host >= 11) {
            my $result = `zypper -R $rootimg_dir $non_interactive lr |grep otherpkg|cut -f2 -d '|'|tr "\n" " "`;
            if ($result =~ /\S/) {
                system("zypper -R $rootimg_dir $non_interactive rr $result");
            }
        } else {
            my $result = `zypper -R $rootimg_dir $non_interactive sl |grep otherpkg|cut -f2 -d '|'|tr "\n" " "`;
            if ($result =~ /\S/) {
                system("zypper -R $rootimg_dir $non_interactive sd $result");
            }
        }

        foreach (keys(%{ $extra_hash{$pass} })) {
            if (($_ eq "PRE_REMOVE") || ($_ eq "POST_REMOVE") || ($_ eq "ENVLIST")) { next; }
            if (-r "$srcdir_otherpkgs/$_/repodata/repomd.xml") {
                if ($osver_host >= 11) {
                    system("zypper -R $rootimg_dir $non_interactive ar file:$srcdir_otherpkgs/$_  otherpkg$index");
                } else {
                    system("zypper -R $rootimg_dir $non_interactive sa file:$srcdir_otherpkgs/$_");
                }
            } else {
                if ($osver_host >= 11) {
                    system("zypper -R $rootimg_dir $non_interactive ar -t Plaindir file:$srcdir_otherpkgs/$_  otherpkg$index");
                } else {
                    system("zypper -R $rootimg_dir $non_interactive sa -t Plaindir file:$srcdir_otherpkgs/$_");
                }
            }
            $index++;
        }

        # Refresh the zypper cache in case there is still old data out there
        system("zypper -R $rootimg_dir $non_interactive  refresh");

        #remove the packages that are specified in the otherpkgs.list files with leading '-'
        my $envlist;
        if (exists $extra_hash{$pass}{ENVLIST}) {
            $envlist = join(' ', @{ $extra_hash{$pass}{ENVLIST} });
        }

        my $yumcmd_remove = "zypper -R $rootimg_dir $non_interactive remove ";
        if (exists($extra_hash{$pass}{'PRE_REMOVE'})) {
            my $pa = $extra_hash{$pass}{'PRE_REMOVE'};
            my $rm_packges = join(' ', @$pa);
            if ($rm_packges) {
                print "$envlist $yumcmd_remove $rm_packges";
                $rc = system("$envlist $yumcmd_remove $rm_packges");
            }
        }


        #add extra packages in the list
        if ($extrapkgnames{$pass}) {
            print "$envlist $yumcmd $extrapkgnames{$pass}\n";
            $rc = system("$envlist $yumcmd $extrapkgnames{$pass}");
            $rc = $rc >> 8;
            if (($rc) && ($rc != '104')) {
                print "zypper invocation failed with rc: $rc\n";
                exit 1;
            }
        }

        #remove the packages that are specified in the otherpkgs.list files with leading '--'
        if (exists($extra_hash{$pass}{'POST_REMOVE'})) {
            my $pa = $extra_hash{$pass}{'POST_REMOVE'};
            my $rm_packges = join(' ', @$pa);
            if ($rm_packges) {
                print "$envlist $yumcmd_remove $rm_packges";
                $rc = system("$envlist $yumcmd_remove $rm_packges");
            }
        }

        if (!$noupdate) {

            # run zypper update to update any installed rpms
            # needed when running genimage again after updating software in repositories
            my $yumcmd_update;
            if ($osver_host >= 11) {
                $yumcmd_update = "zypper -R $rootimg_dir $non_interactive update ";
            } else {
                $yumcmd_update = "zypper -R $rootimg_dir $non_interactive update  ";
            }
            $rc = system("$yumcmd_update");
        }
    }

    #remove the old repository for extra packages
    if ($osver_host >= 11) {
        my $result = `zypper -R $rootimg_dir $non_interactive lr |grep otherpkg|cut -f2 -d '|'|tr "\n" " "`;
        if ($result =~ /\S/) {
            system("zypper -R $rootimg_dir $non_interactive rr $result");
        }
    } else {
        my $result = `zypper -R $rootimg_dir $non_interactive sl |grep otherpkg|cut -f2 -d '|'|tr "\n" " "`;
        if ($result =~ /\S/) {
            system("zypper -R $rootimg_dir $non_interactive sd $result");
        }
    }

    # ignore any return code

    postscripts();    #run 'postscripts'
}
unlink "/tmp/genimage.$$.yum.conf";

# added dracut mode
if ((-d "$rootimg_dir/usr/share/dracut") or (-d "$rootimg_dir/usr/lib/dracut")) {
    $dracutmode = 1;

    # get dracut version
    $dracutver = `chroot $rootimg_dir rpm -qi dracut | awk '/Version/{print \$3}' | awk -F. '{print \$1}'`;
    chomp($dracutver);
    if ($dracutver =~ /^\d\d\d$/) {
        if ($dracutver >= "033") {
            $dracutdir = "dracut_033";
        } else {
            $dracutdir = "dracut";    # The default directory
        }
    }
    print "Enter the dracut mode. Dracut version: $dracutver. Dracut directory: $dracutdir.\n";
}

# default to the first kernel found in the install image if nothing specified explicitly.
# A more accurate guess than whatever the image build server happens to be running
# If specified, that takes precedence.
# If image has one, that is used
# If all else fails, resort to uname -r like this script did before

if (-e "$rootimg_dir/boot/vmlinux") {
    $basekernelver = basename(readlink "$rootimg_dir/boot/vmlinux");
    if ($basekernelver eq "vmlinux") {
        $basekernelver = "";
    } else {
        $basekernelver =~ s/vmlinu.-//;
        $basekernelver =~ s/image-//;
    }
}

unless ($basekernelver) {
    my @KVERS = <$rootimg_dir/boot/vmlinu[xz]-*>;

    # The kernel name is different on s390x, e.g. image-2.6.32.9-0.5-default
    @KVERS = <$rootimg_dir/boot/image-*> if $arch eq "s390x";
    foreach (@KVERS) {
        s/vmlinu.-//;
        s/image-//;
    }
    unless (scalar @KVERS) {
        @KVERS = <$rootimg_dir/lib/modules/*>;
    }
    if (scalar @KVERS) {
        foreach my $kver (@KVERS) {
            unless ($kver =~ m/.gz$/) {
                $basekernelver = basename($kver);
                last;
            }
        }
    }

    @KVERS = <$rootimg_dir/lib/modules/*> unless (scalar @KVERS);
    $basekernelver = basename(pop @KVERS) if (scalar @KVERS);
    $basekernelver = `uname -r` unless ($basekernelver);
}

$kernelver = $basekernelver unless ($kernelver);
chomp $kernelver;

#$updates{kernelver} = $kernelver if ($tempfile);

# copy the kernel to $destdir
if (-e "$rootimg_dir/boot/vmlinux-$kernelver") {
    copy("$rootimg_dir/boot/vmlinux-$kernelver", "$destdir/kernel");
} elsif (-e "$rootimg_dir/boot/vmlinuz-$kernelver") {
    copy("$rootimg_dir/boot/vmlinuz-$kernelver", "$destdir/kernel");
} elsif (-e "$rootimg_dir/boot/image-$kernelver") {
    copy("$rootimg_dir/boot/image-$kernelver", "$destdir/kernel");
} else {
    xdie "couldn't find the kernel file matched $kernelver in $rootimg_dir/boot !";
}

#-- run postinstall script
unless ($imagename) {
    $postinstall_filename = imgutils::get_profile_def_filename($osver, $profile, $arch, $customdir, "postinstall");
    unless ($postinstall_filename) {
        $postinstall_filename = imgutils::get_profile_def_filename($osver, $profile, $arch, $pathtofiles, "postinstall");
    }
}

if ($postinstall_filename) {

    #print "postinstall_filename=$postinstall_filename\n";

    #For Mellonax IB script. In diskless image, the uname -r not returning the rootimg level,
    #because the "uname -r" only returns the version of the kernel in use
    #create a temporary uname script. for every flag except for -r, it should just call the real
    #uname with the same flags and return that info.
    if (!(-e "$rootimg_dir/bin/orig_uname")) {
        system("mv $rootimg_dir/bin/uname $rootimg_dir/bin/orig_uname");
    }
    my $tmpuname;
    open($tmpuname, ">", "$rootimg_dir/bin/uname");
    print $tmpuname <<EOS_UNAME;
#!/bin/sh

if [[ \$\# -eq 1 && \$1 == "-r" ]]; then
    echo $kernelver
    exit 0
fi

res=`/bin/orig_uname \$\*`
echo \$res

EOS_UNAME

    close($tmpuname);
    system("chmod +x $rootimg_dir/bin/uname");

    $updates{'postinstall'} = $postinstall_filename if ($tempfile);

    #export some osimage attributes as the environment variables
    #to postinstall script
    $ENV{IMG_NAME}=$imagename if("" ne $imagename);
    $ENV{IMG_ARCH}=$arch if("" ne $arch);
    $ENV{IMG_OSVER}=$osver if("" ne $osver);
    $ENV{IMG_KERNELVERSION} = $kernelver if("" ne $kernelver);
    $ENV{IMG_PROFILE}=$profile if("" ne $profile);
    $ENV{IMG_PKGLIST}=$pkglist if("" ne $pkglist);
    $ENV{IMG_PKGDIR}=$srcdir if("" ne $srcdir);
    $ENV{IMG_OTHERPKGLIST}=$otherpkglist if("" ne $otherpkglist);
    $ENV{IMG_OTHERPKGDIR}=$srcdir_otherpkgs if("" ne $srcdir_otherpkgs);
    $ENV{IMG_ROOTIMGDIR}=$rootimg_dir if("" ne $rootimg_dir);

    foreach my $postinstall (split /,/, $postinstall_filename) {
        if (!-x $postinstall) {
            print "postinstall script $postinstall is not executable\n";
            exit 1;
        }
        my $rc = system($postinstall, $rootimg_dir, $osver, $arch, $profile);
        if ($rc) {
            print "postinstall script $postinstall failed\n";
            exit 1;
        }
    }

    #delete the osimage attributes from environment variable
    delete @ENV{qw(IMG_ARCH IMG_NAME IMG_OSVER IMG_KERNELVERSION IMG_PROFILE IMG_PKGLIST IMG_PKGDIR IMG_OTHERPKGLIST IMG_OTHERPKGDIR IMG_ROOTIMGDIR)};

    # restore the orig uname
    system("mv $rootimg_dir/bin/orig_uname $rootimg_dir/bin/uname");

}

system("rm -rf $rootimg_dir/etc/zypp/repos.d/*");

# output the changed the attributes so that it can be save into db by the caller.
# all the information has been gathered
# now, update the linuximage and osimage tables
# TODO: do statelite and stateless share the same attributes? currently, I will update both of them
#BEGIN: PLEASE DO NOT CHANGE THE FOLLOWING CODE, genimage PLUGIN NEEDS TO PARSE THR OUTPUT
if ($tempfile) {
    open(FILE, ">>$tempfile");
    if ($imagename) {
        if (keys(%updates) > 0) {
            print FILE "The output for table updates starts here\n";
            print FILE "table::linuximage\n";
            print FILE "imagename::$imagename\n";
            my @a = %updates;
            print FILE join('::', @a) . "\n";
            print FILE "The output for table updates ends here\n";
        }
    } else {
        $updates_os{'profile'}      = $profile;
        $updates_os{'imagetype'}    = 'linux';
        $updates_os{'provmethod'}   = 'netboot';
        $updates_os{'osname'}       = 'Linux';
        $updates_os{'osvers'}       = $osver;
        $updates_os{'osdistroname'} = 'sles';      # not used currently
        $updates_os{'osarch'}       = $arch;

        # update the imagename for stateless
        print FILE "The output for table updates starts here\n";
        print FILE "table::osimage\n";
        print FILE "imagename::$osver-$arch-netboot-$profile\n";
        my @a = %updates_os;
        print FILE join('::', @a) . "\n";
        print FILE "The output for table updates ends here\n";

        print FILE "The output for table updates starts here\n";
        print FILE "table::linuximage\n";
        print FILE "imagename::$osver-$arch-netboot-$profile\n";
        my @a = %updates;
        print FILE join('::', @a) . "\n";
        print FILE "The output for table updates ends here\n";

        # update the imagename for statelite
        $updates_os{'provmethod'} = 'statelite';
        print FILE "The output for table updates starts here\n";
        print FILE "table::osimage\n";
        print FILE "imagename::$osver-$arch-statelite-$profile\n";
        my @a = %updates_os;
        print FILE join('::', @a) . "\n";
        print FILE "The output for table updates ends here\n";

        print FILE "The output for table updates starts here\n";
        print FILE "table::linuximage\n";
        print FILE "imagename::$osver-$arch-statelite-$profile\n";
        my @a = %updates;
        print FILE join('::', @a) . "\n";
        print FILE "The output for table updates ends here\n";
    }
    close FILE;
}

#END



mkpath "$rootimg_dir/.statelite";           # create place for NFS mounts;
mkpath "$rootimg_dir/.sllocal/localmnt";    # create place for localdisk mount
mkpath "$rootimg_dir/.sllocal/log";         # create place for localdisk log

mkpath "$rootimg_dir/root/.ssh"; # create place for NFS mounts for ssh; #TODO is necessary?

# this script will get the directories;
# TODO: it seems it is re-copied in liteimg.pm
unless (-r "$pathtofiles/../add-on/statelite/rc.statelite") {
    print "Can't find $pathtofiles/../add-on/statelite/rc.statelite!\n";
    exit;
}
system("cp $pathtofiles/../add-on/statelite/rc.statelite $rootimg_dir/etc/init.d/statelite");
system("cp $pathtofiles/../add-on/statelite/rc.localdisk $rootimg_dir/etc/init.d/localdisk");

# added dracutmode
unless ($dracutmode) {    #in dracut mode, we delegate all this activity
    unless (-l "$rootimg_dir/var/lib/dhclient") {
        mkpath "$rootimg_dir/var/lib/dhclient/";
        system("touch $rootimg_dir/var/lib/dhclient/dhclient-$prinic.leases");
    }

    unless (-l "$rootimg_dir/var/lib/dhcp") {
        mkpath "$rootimg_dir/var/lib/dhcp/";
        system("touch $rootimg_dir/var/lib/dhcp/dhclient-$prinic.leases");
    }
}


# the dhcp client information stores in the directory "/var/lib/dhcpcd/"
unless (-l "$rootimg_dir/var/lib/dhcpcd") {
    mkpath "$rootimg_dir/var/lib/dhcpcd/";
    system("touch $rootimg_dir/var/lib/dhcpcd/dhcpcd-$prinic.info");
}

#keyctl moved to /bin for newer release
system("cd $rootimg_dir/usr/bin/; ln -s ../../bin/keyctl $rootimg_dir/usr/bin/keyctl");

# which is different from the Redhat family

# some rpms mounts the imageroot/proc on the /proc, need to release it,
# otherwise got kernal panic when installing
# sometimes, the proc fs is not mounted, so one warning/error message will display,
# and I add one check point here.
my $MFD;
open MFD, "/proc/mounts";
my @lines = <MFD>;
close MFD;

my $ret = grep m{$rootimg_dir/proc}, @lines;
if ($ret > 0) {
    system("umount -l $rootimg_dir/proc");
}

# Load driver update disk, and copy them to the root image
my @dd_drivers = &load_dd();

# Push the drivers into the @ndrivers base on the order
my @new_order = ();
foreach my $dd (@dd_drivers) {
    unless (grep { $_ eq $dd } @ndrivers) {
        push @new_order, $dd;
    }
    print "Added driver $dd from driver update disk or driver rpm\n";
}

if (@new_order) {
    @ndrivers = (@new_order, @ndrivers);
}

# add drivers for local disk support
push @ndrivers, ("ext3.ko", "ext4.ko", "virtio_pci.ko", "virtio_blk.ko", "libata.ko", "scsi_mod.ko", "scsi_dh.ko", "ahci.ko", "megaraid_sas.ko", "sd_mod.ko");

if ($osver_host >= 12) {
    push @ndrivers, ("ibmvscsi.ko");
} else {    # for sles11 or lower
    push @ndrivers, ("ibmvscsic.ko", "ata_piix.ko", "pcieport.ko");
}

if (-f "$rootimg_dir/lib/modules/$kernelver/kernel/drivers/net/ethernet/mellanox/mlx4/mlx4_en.ko") {
    for (@ndrivers) {
        s/mlx_en/mlx4_en/;
    }
}

open($moddeps, "<", "$rootimg_dir/lib/modules/$kernelver/modules.dep");
my @moddeps   = <$moddeps>;
my @checkdeps = @ndrivers;
while (scalar @checkdeps) {
    my $driver = pop @checkdeps;
    my @lines = grep /\/$driver:/, @moddeps;
    foreach (@lines) {
        chomp;
        s/.*://;
        s/^\s*//;
        my @deps = split /\s+/, $_;
        if ($driver =~ /libcrc32c.ko/) {
            push @deps, 'crc32c.ko';
        }
        my $dep;
        foreach $dep (@deps) {
            $dep =~ s/.*\///;
            unless (grep { $_ eq $dep } @ndrivers) {    #only add if not added
                print "Added $dep as an autodetected dependency\n";
            }
            unshift(@checkdeps, $dep);    #recursively check dependencies
            unshift(@ndrivers,  $dep);
        }
    }
}
close($moddeps);

#remove the duplicated drivers
my @fulldrivers;
foreach my $dn (@ndrivers) {
    unless (grep { $_ eq $dn } @fulldrivers) {
        push @fulldrivers, $dn;
    }
}
@ndrivers = @fulldrivers;

# before mkinitrd, run depmod to generate the modules.dep
system("chroot $rootimg_dir depmod $kernelver");

if ($dracutmode) {
    mkinitrd_dracut("stateless");
    mkinitrd_dracut("statelite");
} else {
    my @drivers;    # backup  of @ndrivers
    push @drivers, @ndrivers;
    mkinitrd("statelite");
    @ndrivers = ();
    push @ndrivers, @drivers;
    mkinitrd("stateless");
}

sub getlibs {
    my $file    = shift;
    my $liblist = `chroot $rootimg_dir ldd $file`;
    if ($liblist =~ /not a dynamic executable/) {
        return;
    }
    my @libs = split /\n/, $liblist;
    my @return;
    foreach (@libs) {
        unless (/=>/) {
            (my $wjnk, my $lib, my $jnk) = split /\s+/, $_, 3;
            $lib =~ s/^\///;
            $libhash{$lib} = 1;
            next;
        }
        (my $temp1, my $temp2) = split />/, $_, 2;
        (my $whitespace, $temp1, $temp2) = split /\s+/, $temp2, 4;
        unless ($temp1 =~ /\//) {
            next;
        }
        $temp1 =~ s/^\///;
        $libhash{$temp1} = 1;
    }
}

#added dracut
sub mkinitrd_dracut {
    my ($mode) = @_;    # the mode is for statelite or stateless

    my $dracutmoduledir = "$rootimg_dir/usr/share/dracut/modules.d/";
    if ((!-d $dracutmoduledir) and (-d "$rootimg_dir/usr/lib/dracut/modules.d/"))
    {
        $dracutmoduledir = "$rootimg_dir/usr/lib/dracut/modules.d/";
    }

    if ($dracutver >= "033") {

        my $perm = (stat("$fullpath/$dracutdir/patch/syslog/module-setup.sh"))[2];
        cp("$fullpath/$dracutdir/patch/syslog/module-setup.sh", $dracutmoduledir . "98syslog/");
        chmod($perm & 07777, $dracutmoduledir . "98syslog/" . "module-setup.sh");

        $perm = (stat("$fullpath/$dracutdir/patch/syslog/rsyslogd-start.sh"))[2];
        cp("$fullpath/$dracutdir/patch/syslog/rsyslogd-start.sh", $dracutmoduledir . "98syslog/");
        chmod($perm & 07777, $dracutmoduledir . "98syslog/" . "rsyslogd-start.sh");

        $perm = (stat("$fullpath/$dracutdir/patch/syslog/syslog-genrules.sh"))[2];
        cp("$fullpath/$dracutdir/patch/syslog/syslog-genrules.sh", $dracutmoduledir . "98syslog/");
        chmod($perm & 07777, $dracutmoduledir . "98syslog/" . "syslog-genrules.sh");

    }

    my $dracutmpath = $dracutmoduledir . "97xcat/";
    mkpath($dracutmpath);

    my $perm = (stat("$fullpath/$dracutdir/check"))[2];
    cp("$fullpath/$dracutdir/check", $dracutmpath);
    chmod($perm & 07777, "$dracutmpath/check");

    foreach (@ndrivers) { s/\.ko$//; }

    # Add drivers to support local disk
    push @ndrivers, "ext3";
    push @ndrivers, "ext4";

    #remove the duplicated drivers
    my @fulldrivers;
    foreach my $dn (@ndrivers) {
        unless (grep { $_ eq $dn } @fulldrivers) {
            push @fulldrivers, $dn;
        }
    }
    @ndrivers = @fulldrivers;

    my $add_drivers = join(' ', @ndrivers);
    print "Try to load drivers: $add_drivers to initrd.\n";
    my $DRACUTCONF;

    if ($mode eq "statelite") {

        # for statelite
        cp("$fullpath/$dracutdir/install.statelite", "$dracutmpath/install");
        $perm = (stat("$fullpath/$dracutdir/install.statelite"))[2];
        chmod($perm & 07777, "$dracutmpath/install");

        cp("$installroot/postscripts/updateflag.awk", "$dracutmpath/xcat-updateflag");
        $perm = (stat("$installroot/postscripts/updateflag.awk"))[2];
        chmod($perm & 07777, "$dracutmpath/xcat-updateflag");

        cp("$fullpath/$dracutdir/xcat-prepivot.sh", $dracutmpath);
        $perm = (stat("$fullpath/$dracutdir/xcat-prepivot.sh"))[2];
        chmod($perm & 07777, "$dracutmpath/xcat-prepivot.sh");

        cp("$fullpath/$dracutdir/xcat-premount.sh", $dracutmpath);
        $perm = (stat("$fullpath/$dracutdir/xcat-premount.sh"))[2];
        chmod($perm & 07777, "$dracutmpath/xcat-premount.sh");

        #update etc/dracut.conf
        open($DRACUTCONF, '>', "$rootimg_dir/etc/dracut.conf");
        if (-d glob($dracutmoduledir . "[0-9]*fadump")) {
            print $DRACUTCONF qq{dracutmodules+="xcat nfs base network kernel-modules lvm fadump"\n};
        }
        else {
            print $DRACUTCONF qq{dracutmodules+="xcat nfs base network kernel-modules lvm"\n};
        }
        print $DRACUTCONF qq{add_drivers+="$add_drivers"\n};
        print $DRACUTCONF qq{filesystems+="nfs"\n};
        close $DRACUTCONF;
    } elsif ($mode eq "stateless") {
        cp("$fullpath/$dracutdir/install.netboot", "$dracutmpath/install");
        $perm = (stat("$fullpath/$dracutdir/install.netboot"))[2];
        chmod($perm & 07777, "$dracutmpath/install");

        cp("$fullpath/$dracutdir/xcat-cmdline.sh", "$dracutmpath/");
        $perm = (stat("$fullpath/$dracutdir/xcat-cmdline.sh"))[2];
        chmod($perm & 07777, "$dracutmpath/xcat-cmdline.sh");

        cp("$installroot/postscripts/updateflag.awk", "$dracutmpath/xcat-updateflag");
        $perm = (stat("$installroot/postscripts/updateflag.awk"))[2];
        chmod($perm & 07777, "$dracutmpath/xcat-updateflag");
        if ($prinic) {
            my $optspec;
            open($optspec, '>>', "$dracutmpath/xcat-cmdline.sh");
            print $optspec "PRINIC=$prinic\n";
            close $optspec;
        }

        cp("$fullpath/$dracutdir/xcatroot", "$dracutmpath/");
        $perm = (stat("$fullpath/$dracutdir/xcatroot"))[2];
        chmod($perm & 07777, "$dracutmpath/xcatroot");

        cp("$fullpath/$dracutdir/installkernel", "$dracutmpath/");
        $perm = (stat("$fullpath/$dracutdir/installkernel"))[2];
        chmod($perm & 07777, "$dracutmpath/installkernel");

        # update etc/dracut.conf
        open($DRACUTCONF, '>', "$rootimg_dir/etc/dracut.conf");
        if (-d glob($dracutmoduledir . "[0-9]*fadump")) {
            print $DRACUTCONF qq{dracutmodules+="xcat nfs base network kernel-modules lvm fadump syslog"\n};
        }
        else {
            print $DRACUTCONF qq{dracutmodules+="xcat nfs base network kernel-modules lvm syslog"\n};
        }
        print $DRACUTCONF qq{add_drivers+="$add_drivers"\n};
        close $DRACUTCONF;
    } else {
        xdie "the mode: $mode is not supported by genimage";
    }

    my $additional_options = undef;
    if ($rootlimit)
    {
        open(my $ETC_CMDLINE, ">", "$rootimg_dir/tmp/cmdline");
        print $ETC_CMDLINE qq{rootlimit=$rootlimit\n};
        close $ETC_CMDLINE;
        $additional_options = qq{--include /tmp/cmdline /etc/cmdline};
    }

    # force the dracut run in non-hostonly mode for dracut higher than version 033
    if ($dracutver > "033") {
        $additional_options .= " -N";
    }

    #if "pigz" is available in the rootimg, use "pigz" instead of "gzip"
    my $compress = qx(chroot $rootimg_dir bash -c "type -p pigz"|tr -d "\n");
    if ($compress) {

        #take the online cpu numerber as the pigz processes number
        my $processnum = qx(lscpu -p=cpu --online|grep -v '#'|wc -l|tr -d "\n");
        $additional_options .= " --compress \"$compress -p $processnum \"";
    }

    print "\nchroot $rootimg_dir dracut $additional_options -f /tmp/initrd.$$.gz $kernelver\n";
    !system("chroot $rootimg_dir dracut $additional_options -f /tmp/initrd.$$.gz $kernelver")
      or die("Error: failed to generate the initial ramdisk for $mode.\n");
    print "the initial ramdisk for $mode is generated successfully.\n";
    move("$rootimg_dir/tmp/initrd.$$.gz", "$destdir/initrd-$mode.gz");
}


sub mkinitrd {
    my ($mode) = @_;    # statelite or stateless

    if ($mode eq "statelite") {

        # additional modules needed on s390x
        push @ndrivers, qw{qdio.ko ccwgroup.ko qeth.ko qeth_l2.ko qeth_l3.ko} if ($arch eq "s390x");

        # for nfs
        my @modlist = qw{sunrpc.ko lockd.ko nfs_acl.ko fscache.ko auth_rpcgss.ko exportfs.ko nfsd.ko nfs.ko};
        unshift(@ndrivers, @modlist);
    }

    mkpath("/tmp/xcatinitrd.$$/bin");
    symlink("bin", "/tmp/xcatinitrd.$$/sbin");
    mkpath("/tmp/xcatinitrd.$$/usr/bin");
    mkpath("/tmp/xcatinitrd.$$/usr/sbin");
    mkpath("/tmp/xcatinitrd.$$/usr/lib");
    mkpath("/tmp/xcatinitrd.$$/usr/lib64");
    mkpath("/tmp/xcatinitrd.$$/lib/firmware");
    mkpath("/tmp/xcatinitrd.$$/tmp");
    mkpath("/tmp/xcatinitrd.$$/var/run");
    mkpath("/tmp/xcatinitrd.$$/lib64/firmware");
    mkpath("/tmp/xcatinitrd.$$/lib/power6");    #SLES10
    mkpath("/tmp/xcatinitrd.$$/lib/power7");    #SLES10
    mkpath("/tmp/xcatinitrd.$$/lib/mkinitrd/bin");
    mkpath("/tmp/xcatinitrd.$$/proc");
    mkpath("/tmp/xcatinitrd.$$/sys");
    mkpath("/tmp/xcatinitrd.$$/dev/mapper");
    mkpath("/tmp/xcatinitrd.$$/sysroot");
    mkpath("/tmp/xcatinitrd.$$/etc/ld.so.conf.d");
    mkpath("/tmp/xcatinitrd.$$/var/lib/dhcpcd");
    my $inifile;
    open($inifile, ">", "/tmp/xcatinitrd.$$/init");
    print $inifile "#!/bin/bash\n";

    # copied from genimage for rh
    # add some functions
    print $inifile <<EOS1;
NEWROOT="/sysroot"
SHELL="/bin/sh"
RWDIR=".statelite"

# Define some colors
RESET="\033[0m"
RED="\033[31m"
CYAN="\033[36m"
YELLOW="\033[33m\033[1m"
GREEN="\033[32m"
PINK="\033[35m\033[1m"
MAGENTA="\033[35m"
BROWN="\033[33m"
NORMAL=\$RESET

# This function is used to mount files/directories from the .statelite directory
#  over the root directory.
# This function stolen from redhat
shell() {
        echo ''
        echo -e "\$YELLOW Entering rescue/debug init shell."
        echo -e " Exit shell to continue booting.\$RESET"
        \$SHELL
}

fancydisplay () {
        clear
        echo -e "\$CYAN"
echo '
             ..                                               :iiii,
           :tLL;                                             .,:...,.
          .j;:tLt.   :.                               .;j:   ij::::;.
        :tt;:::,ii:.jEEGi                           :tDEEG:.ti,::::;t:
       .,,,,,,,,,,,tLEEEEj:                        tDEEEEDtj;,,,::::::
        .:,,::::::,;fDEEEEEL,.                .,ijDEDDDEEGt,,,,:,ijj;
          ....   ..:;jDDLGDEEEGGGfjjjjjjfffLGDEEDEEDLjfGDt,:..
                     .iftffGDLLDEEEDDDEEDDDDEDEEGLfLjjtti:
                       ,fii;jGDGffLjifLGLjtfffffGDEDGfji
                        ;DEEGffDDDjiii;;ii;,tGDEGjfEEEEf.
                       ,GEGGftiGEEEDt:,;,;;LEEDGjLEEEEEEG
                      ;DEDGjtjfitjGGjfDGj;jLLiitfGDEGjEEDj
                      fGjjtfLfji;itjfGDjLDfjjjji;tGGLDEEDj
                      fEDGffjti;ittjjjjtjjjjt:,,iiGGGGjtf.
                      :fGGLfLLfLGf;i;ijffj,,tjLGDDGLfjtf,
                    :;tLfjiiffLGDDDGLGEEEEjfGDDGGLfjfff:
             .. ,;tLLLLLL,;tijfLGGGjfDEEEEDLLGGGLLLjtjLLfi,.
         .jffLLLLGGLfjj;:  :,;ijLGLfjGEDDEGtfGGLfjj:.,jjLGGLti;,,;fj,
         ,fGGGGGGLj,.          ;jGGGGLLjffftjLj;..     .,tfGGGGGGGGGGi
          ,jGDDDj,.              :tLGLGGLGDLjt,           :iLGGDDDDGLif
          ,LDDDL,                 .;LDDDDGfff,              ,;iGDDj;,..
          ;fGGGf,                    ,;;;;,:                 tf;jL,
           ;.:::,               Powered by xCAT               ,j.:;
'
        echo -e "\$RESET"
        echo -e "\$YELLOW"
echo '
                            _________     ________________
                     ___  __\\_   ___ \\   /  _  \\__    ___/
                     \\  \\/  /    \\  \\/  /  /_\\  \\|    |
                      >    <\\     \\____/    |    \\    |
                     /__/\\_ \\\\______  /\\____|__  /____|
                           \\/       \\/         \\/
'
        echo -e "\$RESET"
}


EOS1

    print $inifile "mount -t proc /proc /proc\n";
    print $inifile "mount -t sysfs /sys /sys\n";
    print $inifile "mount -o mode=0755 -t tmpfs /dev /dev\n";
    print $inifile "mkdir /dev/pts\n";
    print $inifile "mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts\n";
    print $inifile "mkdir /dev/shm\n";
    print $inifile "mkdir /dev/mapper\n";

    print $inifile "mknod /dev/random c 1 8\n";
    print $inifile "mknod /dev/urandom c 1 9\n";
    print $inifile "mknod /dev/null c 1 3\n";
    print $inifile "mknod /dev/zero c 1 5\n";
    print $inifile "mknod /dev/systty c 4 0\n";
    print $inifile "mknod /dev/tty c 5 0\n";
    print $inifile "mknod /dev/console c 5 1\n";
    print $inifile "mknod /dev/ptmx c 5 2\n";
    print $inifile "mknod /dev/rtc c 10 135\n";
    print $inifile "mknod /dev/tty0 c 4 0\n";
    print $inifile "mknod /dev/tty1 c 4 1\n";
    print $inifile "mknod /dev/tty2 c 4 2\n";
    print $inifile "mknod /dev/tty3 c 4 3\n";
    print $inifile "mknod /dev/tty4 c 4 4\n";
    print $inifile "mknod /dev/tty5 c 4 5\n";
    print $inifile "mknod /dev/tty6 c 4 6\n";
    print $inifile "mknod /dev/tty7 c 4 7\n";
    print $inifile "mknod /dev/tty8 c 4 8\n";
    print $inifile "mknod /dev/tty9 c 4 9\n";
    print $inifile "mknod /dev/tty10 c 4 10\n";
    print $inifile "mknod /dev/tty11 c 4 11\n";
    print $inifile "mknod /dev/tty12 c 4 12\n";
    print $inifile "mknod /dev/ttyS0 c 4 64\n";
    print $inifile "mknod /dev/ttyS1 c 4 65\n";
    print $inifile "mknod /dev/ttyS2 c 4 66\n";
    print $inifile "mknod /dev/ttyS3 c 4 67\n";

    # Install modules before starting udev
    # because networking modules (qeth/qeth_l2/qeth_l3) are needed
    foreach (@ndrivers) {
        print $inifile "insmod /lib/$_\n";
    }

    # Start udev
    print $inifile <<EOMS;

PATH="\$PATH:/usr/sbin:/sbin"
export PATH

# Start udev to find devices attached to node
# This script can be found in /lib/mkinitrd
echo "Creating device nodes with udev"
/sbin/udevd --daemon
if [ -f "/sbin/udevadm" ]
then
    /sbin/udevadm trigger
    /sbin/udevadm settle --timeout=10
fi
EOMS

    if ($mode eq "statelite") {
        print $inifile "echo debug: before netstart\n";
        print $inifile "# check and see if debug is specified on command line\n";
        print $inifile "grep '\(debug\)' /proc/cmdline > /dev/null && export DEBUG=1\n";
    }

    print $inifile <<EOMS;
# check the kernel parameters firstly
# if one parameter for the booting device is here, it will be used
PRINIC=$prinic
NODESTATUS='y'
XCATMNTOPTS='nolock,tcp'
for i in `cat /proc/cmdline`; do
    KEY=`echo \$i |awk -F= '{print \$1}'`
    if [ "\$KEY" == 'netdev' ]; then
        NETDEV=`echo \$i |awk -F= '{print \$2}'`
    elif [ "\$KEY" == 'BOOTIF' ]; then
        VALUE=`echo \$i |awk -F= '{print \$2}'|sed -e s/^01-// -e s/-/:/g`
        BOOTIF=`ifconfig -a|grep -i "hwaddr \$VALUE"|awk '{print \$1}'`
    elif [ "\$KEY" == 'XCAT' ]; then
        VALUE=`echo \$i |awk -F= '{print \$2}'`
        # format: XCAT=xcatmaster:xcatdport
        XCATSERVER=\$VALUE
    elif [ "\$KEY" == 'MNTOPTS' ]; then
        VALUE=`echo \$i |awk -F\\' '{print \$2}'`
        # format: MNTOPTS='nolock,time=800'
        XCATMNTOPTS=\$VALUE

    fi


    if [ \$i == 'nonodestatus' ]; then
       NODESTATUS='n'
    fi
done

if [ -z "\$IFACE" ]; then
    if [ ! -z "\$NETDEV" ]; then
        IFACE=\$NETDEV
    elif [ ! -z "\$BOOTIF" ]; then
        IFACE=\$BOOTIF
    elif [ ! -z "\$PRINIC" ]; then
        IFACE=\$PRINIC
    else
        echo "\${RED}Couldn't find the proper booting device, switch to shell...\${RESET}"
        shell
        exit
    fi
fi

export IFACE=\$IFACE

/usr/bin/touch /var/lib/dhcpcd/dhcpcd-\$IFACE.info

netstart \$IFACE
while ! ifconfig | grep inet; do
    echo -e "\${RED}Failed to acquire address, retrying \${RESET}"
    sleep 1
    netstart \$IFACE
done
# Add a fake interface configuration file for the boot interface to skip the
# ifdown of the interface during the reboot/shutdown to skip the fs broken of
# nfs based file system
echo "STARTMODE=nfsroot" > /tmp/ifcfg-\$IFACE

ip addr add dev lo 127.0.0.1/8
ip link set lo up


XCATMASTER=`echo \$XCATSERVER|awk -F: '{print \$1}'`

if [ -z \$XCATIPORT ]; then
     XCATIPORT="3002"
fi

if [ \$NODESTATUS != 'n' ]; then
    /tmp/updateflag \$XCATMASTER \$XCATIPORT "installstatus netbooting"
fi

cd /
for i in `cat /proc/cmdline`; do
   KEY=`echo \$i |awk -F= '{print \$1}'`
   if [ "\$KEY" == 'imgurl' ]; then
      VALUE=`echo \$i |awk -F= '{print \$2}'`
      if [ "http" == "`echo \$VALUE|awk -F: '{print \$1}'`" ]; then
        #NOTE needs FT retry code to scale
        #NOTE: should prob have max count
        FILENAME=`echo \$VALUE|awk -F/ '{print \$NF}'`
        while [ ! -r "\$FILENAME" ]; do
          echo Getting \$VALUE...
          if ! wget \$VALUE; then
            sleep 5 #should be random, exponential for scale
            rm -f \$FILENAME
          fi
        done
      fi
   elif [[ "\$KEY" == NFSROOT ]]; then # for NFSROOT
        NFSROOT=1
        VALUE=`echo \$i |awk -F= '{print \$2}'`
        SERVER=`echo \$VALUE|awk -F: '{print \$1}'`
        ROOTDIR=`echo \$VALUE|awk -F/ '{for(i=2;i<=NF;i++) printf "/%s",\$i}'`
   elif [ "\$KEY" == 'STATEMNT' ]; then
        STATELITE=1
        VALUE=`echo \$i |awk -F= '{print \$2}'`
        # VALUE may be null
        if [ ! -z \$VALUE ]; then
            SNAPSHOTSERVER=`echo \$VALUE|awk -F: '{print \$1}'`
            SNAPSHOTROOT=`echo \$VALUE|awk -F/ '{for(i=2;i<=NF;i++) printf "/%s",\$i}'`
            # may be that there is not server and just a directory.
            if [ -z \$SNAPSHOTROOT ]; then
                SNAPSHOTROOT=\$SNAPSHOTSERVER
                SNAPSHOTSERVER=
            fi
        fi
    elif [ "\$KEY" == 'NODE' ]; then
        NODENAME=`echo \$i |awk -F= '{print \$2}'`
    fi
done

# show xCAT logo
fancydisplay

# Statelite code is here
if [ "\$STATELITE" = "1" ]; then
    echo Setting up Statelite
    mknod /dev/loop0 b 7 0
    mkdir -p \$NEWROOT
    MAXTRIES=15
    ITER=0
    ME=`hostname`
    if [ ! -z "$NODENAME" ]; then
        ME=$NODENAME
    fi
    if [ "\$NFSROOT" = "1" ]; then
        while ! mount.nfs \${SERVER}:\${ROOTDIR}/rootimg \$NEWROOT -r -n -o nolock,rsize=32768,tcp,nfsvers=3,timeo=14; do
            ITER=\$(expr \$ITER + 1)
            if [ "\$ITER" = "\$MAXTRIES" ]; then
                echo "You're dead. rpower \$ME boot to play again."
                echo "Possible problems:
1.  This initrd wan't created for the statelite node?
2.  IS DNS set up? Maybe that's why I can't mount \${SERVER}.
3.  The nfs modules aren't set right in this initial ramdisk?"
                shell
                exit
            fi
            echo -e "\${RED}Couldn't mount \$SERVER:\$ROOTDIR on \$NEWROOT \$RESET"
            RS=\$(expr \$RANDOM % 30)
            echo -e "Trying again in \$RS seconds"
            sleep \$RS
        done
    else
        # for statelite mode on top of the ramdisk
EOMS

    print $inifile "if [ -r /rootimg-statelite.gz ]; then \n";
    print $inifile "echo Setting up RAM-root tmpfs.\n";
    if ($rootlimit) {
        print $inifile "    mount -o size=$rootlimit,mode=755 -t tmpfs rootfs \$NEWROOT \n";
    } else {
        print $inifile "    mount -o mode=755 -t tmpfs rootfs \$NEWROOT \n";
    }

    print $inifile <<EOMS;
        cd \$NEWROOT
        echo -n "Extracting root file system:"
        if [ -x /bin/cpio ]; then
            gzip -cd /rootimg-statelite.gz | /bin/cpio -idum
        else
            gzip -cd /rootimg-statelite.gz | cpio -idum
        fi
        echo "Done"
    else
        echo -e "\${RED} Couldn't find rootimg-statelite.gz for statelite semantics on top of ramdisk \${RESET}"
        shell
        exit
    fi
fi
# now we need to mount the rest of the system.  This is the read/write portions
#echo "Mounting Snapshot directories"
    if [ ! -e "\$NEWROOT/\$RWDIR" ]
    then
        echo ""
        echo -e "\${RED}Hmmm... this NFS root directory doesn't have a /\$RWDIR directory for me to mount a rw filesystem.  You'd better create it... \${NORMAL}"
        echo "."
        shell
    fi

    while [ ! -e "\$NEWROOT/etc/init.d/statelite" ]
    do
        echo ""
        echo -e "\${RED}Hmmm... \$NEWROOT/etc/init.d/statelite doesn't exist.  Perhaps you didn't create this image with the -m statelite mode"
        echo ""
        shell
    done
    grep '\\(shell\\)' /proc/cmdline >/dev/null && shell
    mount -t tmpfs rw -o mode=$permission \$NEWROOT/\$RWDIR
    mkdir -p \$NEWROOT/\$RWDIR/tmpfs

    #mount the /root/.ssh, it needs more strict permission in order for ssh work
    #if [ ! -e "\$NEWROOT/root/.ssh" ]
    #then
    #    mkdir -p \$NEWROOT/root/.ssh
    #fi
    #mount -t tmpfs -o mode=755 ssh \$NEWROOT/root/.ssh

    # mount the SNAPSHOT directory here for persistent use.
    if [ ! -z \$SNAPSHOTSERVER ]
    then
        mkdir -p \$NEWROOT/\$RWDIR/persistent
        MAXTRIES=5
        ITER=0
        while ! mount \$SNAPSHOTSERVER:\$SNAPSHOTROOT  \$NEWROOT/\$RWDIR/persistent -o nolock,\$XCATMNTOPTS
        do
            ITER=\$(expr \$ITER + 1)
            if [ "\$ITER" == "\$MAXTRIES" ]
            then
                echo "You're dead.  rpower \$ME boot to play again."
                echo "Possible problems:
1.  \$SNAPSHOTSERVER is not exporting \$SNAPSHOTROOT ?
2.  Is DNS set up?  Maybe that's why I can't mount \$SNAPSHOTSERVER."
                shell
                exit
            fi
            echo -e "\${RED}Hmmm... Can't mount \$SNAPSHOTSERVER:\$SNAPSHOTROOT. \${NORMAL} \$XCATMNTOPTS"
            RS=`expr \$RANDOM % 20`
            echo -e "Trying again in \$RS seconds"
            sleep \$RS
        done

        # create directory which is named after my node name
        mkdir -p \$NEWROOT/\$RWDIR/persistent/\$ME
        ITER=0
        # umount current persistent mount
        while ! umount -l \$NEWROOT/\$RWDIR/persistent; do
            ITER=\$(( ITER + 1 ))
            if [ "\$ITER" == "\$MAXTRIES" ]; then
                echo "Your are dead, rpower \$ME boot to play again."
                echo "Cannot umount \$NEWROOT/\$RWDIR/persistent."
                /bin/sh
                exit
            fi
            RS= \$(( \$RANDOM % 20 ))
            echo "Trying again in \$RS seconds..."
            sleep \$RS
        done

        # mount persistent to server:/rootpath/nodename
        ITER=0
        while ! mount \$SNAPSHOTSERVER:/\$SNAPSHOTROOT/\$ME  \$NEWROOT/\$RWDIR/persistent -o nolock,\$XCATMNTOPTS; do
            ITER=\$(( ITER + 1 ))
            if [ "\$ITER" == "\$MAXTRIES" ]; then
                echo "Your are dead, rpower \$ME boot to play again."
                echo "Possible problems: cannot mount to \$SNAPSHOTSERVER:/\$SNAPSHOTROOT/\$ME."
                /bin/sh
                exit
            fi
            RS= \$(( \$RANDOM % 20 ))
            echo "Trying again in \$RS seconds..."
            sleep \$RS
        done
    fi

    grep '\\(shell\\)' /proc/cmdline >/dev/null && shell

    # have to preserve the initial DHCP request. So we  link it.
    # SLES uses different file to store DHCP info
    if [ ! -d \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhcpcd ]
    then
        mkdir -p \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhcpcd
    fi
    cp -fp /var/lib/dhcpcd/dhcpcd-\$IFACE.info \${NEWROOT}/\${RWDIR}/tmpfs/var/lib/dhcpcd/dhcpcd-\$IFACE.info

    [ -e /etc/ntp.conf ] && mkdir -p \$NEWROOT/\$RWDIR/tmpfs/etc && cp /etc/ntp.conf \$NEWROOT/\$RWDIR/tmpfs/etc/

    [ -e /etc/resolv.conf ] && mkdir -p \$NEWROOT/\$RWDIR/tmpfs/etc && cp /etc/resolv.conf \$NEWROOT/\$RWDIR/tmpfs/etc/

    # now that everything is mounted, lets do this
    # hmmm, apparently I'm checking this twice... so I'd better
    # be really sure the file is there.
    while [ ! -e \$NEWROOT/etc/init.d/statelite ]
    do
        echo "\$NEWROOT/etc/init.d/statelite does not exist in image!"
        shell
    done

    # try to configure the local disk
    \$NEWROOT/etc/init.d/localdisk

    # do all the mounts:
    \$NEWROOT/etc/init.d/statelite
EOMS

    # udevd needed by s390x for networking
    # but for other type of machine, udevd will affect the start of devices which detected
    #  after the chroot, so kill it before the switching root
    if ($arch ne "s390x") {
        print $inifile "\n    killall -9 udevd\n";
    }

    print $inifile <<EOMS;
    # give the debug shell just before we go if specified!
    grep '\(shell\)' /proc/cmdline > /dev/null && shell

    echo 0x100 > /proc/sys/kernel/real-root-dev
    export keep_old_ip=yes
    export fastboot=yes
    export READONLY=yes
    grep '\\(shell\\)' /proc/cmdline >/dev/null && shell
    mount -n --bind /dev /sysroot/dev
    umount /sys
    umount /proc

    # sles use the standard utility to chroot
    if ! exec /usr/bin/chroot \$NEWROOT /sbin/init
    then
        echo ""
        echo -e "\${RED}Couldn't chroot.  Something must be wrong with NFS root image.\${RESET}"
        shell
    fi
    exit
fi
# end NFSROOT/Statelite code

if [ -r /rootimg.sfs ]; then
  echo Setting up squashfs with ram overlay.
  mknod /dev/loop0 b 7 0
  mkdir -p /ro
  mkdir -p /rw
  mount -t squashfs /rootimg.sfs /ro
  mount -t tmpfs rw /rw
  mount -t aufs -o dirs=/rw:/ro mergedroot /sysroot
  mkdir -p /sysroot/ro
  mkdir -p /sysroot/rw
  mount --move /ro /sysroot/ro
  mount --move /rw /sysroot/rw
EOMS
    print $inifile "elif [ -r /rootimg.cpio.gz ] || [ -r /rootimg.cpio.xz ]; then\n";
    print $inifile "echo Setting up RAM-root tmpfs.\n";
    if ($rootlimit) {
        print $inifile "  mount -o size=$rootlimit,mode=755 -t tmpfs rootfs \$NEWROOT\n";
    } else {
        print $inifile "  mount -o  mode=755 -t tmpfs rootfs \$NEWROOT\n";
    }
    print $inifile "  cd /sysroot\n";
    print $inifile "  echo -n \"Extracting root filesystem:\"\n";
    print $inifile "  if [ -r /rootimg.cpio.gz ]; then\n";
    print $inifile "    if [ -x /bin/cpio ]; then\n";
    print $inifile "      zcat /rootimg.cpio.gz |/bin/cpio -idum\n";
    print $inifile "    else\n";
    print $inifile "      zcat /rootimg.cpio.gz |cpio -idum\n";
    print $inifile "    fi\n";
    print $inifile "  elif [ -r /rootimg.cpio.xz ]; then\n";
    print $inifile "    if [ -x /bin/cpio ]; then\n";
    print $inifile "      xz -cd /rootimg.cpio.xz |/bin/cpio -idum\n";
    print $inifile "    else\n";
    print $inifile "      xz -cd /rootimg.cpio.xz |cpio -idum\n";
    print $inifile "    fi\n";
    print $inifile "  fi\n";
    print $inifile "  echo Done\n";
    print $inifile "elif [ -r /rootimg.tar.gz ] || [ -r /rootimg.tar.xz ]; then\n";
    print $inifile "    echo Setting up RAM-root tmpfs.\n";

    if ($rootlimit) {
        print $inifile "    mount -o \"size=$rootlimit,mode=755\" -t tmpfs rootfs \$NEWROOT\n";
    } else {
        print $inifile "    mount -o  mode=755 -t tmpfs rootfs \$NEWROOT\n";
    }
    print $inifile "    cd \$NEWROOT\n";
    print $inifile "    echo -n \"Extracting root filesystem:\"\n";
    print $inifile "    if [ -r /rootimg.tar.gz ]; then\n";
    print $inifile "        tar --selinux --xattrs-include='*' -zxf /rootimg.tar.gz\n";
    print $inifile "        if [ \$? -ne 0 ]; then\n";
    print $inifile "            tar -zxf /rootimg.tar.gz\n";
    print $inifile "        fi\n";
    print $inifile "    elif [ -r /rootimg.tar.xz ]; then\n";
    print $inifile "        tar --selinux --xattrs-include='*' -Jxf /rootimg.tar.xz\n";
    print $inifile "        if [ \$? -ne 0 ]; then\n";
    print $inifile "            tar -Jxf /rootimg.tar.xz\n";
    print $inifile "        fi\n";
    print $inifile "    fi\n";
    print $inifile "    echo Done\n";
    print $inifile "else\n";
    print $inifile "  echo -n Failed to download image, panicing in 5...\n";
    print $inifile "  for i in 4 3 2 1 0; do\n";
    print $inifile "    /bin/sleep 1\n";
    print $inifile "    echo -n \$i...\n";
    print $inifile "  done\n";
    print $inifile "  echo\n";
    print $inifile <<EOMS;
echo "You're dead.  rpower nodename reset to play again.

* Did you packimage with -m cpio or -m squashfs?
* If using -m squashfs did you include aufs.ko with geninitrd?
  e.g.:  -n tg3,squashfs,aufs,loop
"
sleep 5
EOMS
    print $inifile "  exit\n";
    print $inifile "fi\n";

    print $inifile "\$NEWROOT/etc/init.d/localdisk\n";    # to run the localdisk
        # udevd needed by s390x for networking
     # but for other type of machine, udevd will affect the start of devices which detected
     #  after the chroot, so kill it before the switching root
    if ($arch ne "s390x") {
        print $inifile "killall -9 udevd\n";
    }

    print $inifile "cd /\n";
    print $inifile "mkdir \$NEWROOT/var/lib/dhcpcd/\n"; #neccessary for SLES11, not sure for SLES10
    print $inifile "cp /var/lib/dhcpcd/* \$NEWROOT/var/lib/dhcpcd/\n";
    print $inifile "cp /etc/resolv.conf \$NEWROOT/etc/\n";
    print $inifile "cp /etc/HOSTNAME \$NEWROOT/etc/\n";
    print $inifile "mknod \$NEWROOT/dev/console c 5 1\n";

    #details, see defect https://sourceforge.net/p/xcat/bugs/4741/
    if ($osver =~ /sles11.4/i) {
        print $inifile "export ROOTFS_BLKDEV=\"\/\"\n";
    }

    print $inifile "exec /lib/mkinitrd/bin/run-init -c /dev/console \$NEWROOT /sbin/init\n";
    close($inifile);
    open($inifile, ">" . "/tmp/xcatinitrd.$$/bin/netstart");
    print $inifile "#!/bin/bash \n";
    if ($osver_host == 10) {
        print $inifile "dhcpcd \${1}\n";
    } else {    # for sles11 or higher
         # -p is used to keep the network connection during the shutdown. Used for nfs-based statelite shutdown
        print $inifile "dhcpcd \${1} -p\n";
    }

    #-- Bring other NICs up in /bin/netstart in initrd for NIC failover
    foreach (split /,/, $othernics) {
        if (/^$/) { next; }
        print $inifile "dhcpcd $_\n";
    }

    print $inifile <<END;
cat /var/lib/dhcpcd/*info | grep HOSTNAME | uniq | awk -F= '{print \$2}'| sed \"s/'//g\" >> /etc/HOSTNAME
END

    close($inifile);

    #if "nonodestatus" specified,do not update the nodestatus
    system("mkdir -p /tmp/xcatinitrd.$$/tmp/");
    cp("$installroot/postscripts/updateflag.awk","/tmp/xcatinitrd.$$/tmp/updateflag");
    $perm = (stat("$installroot/postscripts/updateflag.awk"))[2];
    chmod($perm & 07777, "/tmp/xcatinitrd.$$/tmp/updateflag");

    chmod(0755, "/tmp/xcatinitrd.$$/init");
    chmod(0755, "/tmp/xcatinitrd.$$/bin/netstart");

    @filestoadd = ();
    foreach (@ndrivers) {
        if (-f "$customdir/$_") {
            push @filestoadd, [ $_, "lib/$_" ];
        } elsif (-f "$pathtofiles/$_") {
            push @filestoadd, [ $_, "lib/$_" ];
        }
    }
    if ($mode eq "statelite") {
        foreach ("sbin/ifconfig", "usr/bin/clear", "usr/bin/touch", "usr/bin/cut", "usr/bin/rm", "bin/hostname", "usr/bin/egrep", "bin/ln", "bin/ls", "usr/bin/dirname", "usr/bin/expr", "usr/bin/chroot", "usr/bin/grep", "bin/cpio", "bin/sleep", "bin/mount", "bin/umount", "sbin/dhcpcd", "bin/bash", "sbin/insmod", "bin/mkdir", "bin/mknod", "sbin/ip", "bin/cat", "usr/bin/awk", "usr/bin/wget", "bin/cp", "usr/bin/cpio", "usr/bin/zcat", "usr/bin/gzip", "lib/mkinitrd/bin/run-init", "usr/bin/uniq", "usr/bin/sed", "usr/bin/wc", "bin/sed", "sbin/udevd", "usr/bin/readlink", "usr/sbin/parted", "sbin/mke2fs", "sbin/mkswap", "sbin/swapon", "bin/chmod", "usr/bin/bc", "usr/bin/xz", "usr/bin/gzip", "bin/tar") {
            getlibs($_);
            push @filestoadd, $_;
        }
        if ($osver_host >= 11) {
            foreach ("sbin/mount.nfs", "sbin/umount.nfs", "sbin/udevadm") {
                getlibs($_);
                push @filestoadd, $_;
            }
        }

    } else {
        foreach ("sbin/ifconfig", "usr/bin/clear", "usr/bin/touch", "usr/bin/grep", "usr/bin/egrep", "bin/cpio", "bin/sleep", "bin/mount", "sbin/dhcpcd", "bin/bash", "sbin/insmod", "bin/mkdir", "bin/mknod", "sbin/ip", "bin/cat", "usr/bin/awk", "usr/bin/wget", "bin/cp", "usr/bin/cpio", "usr/bin/zcat", "usr/bin/gzip", "lib/mkinitrd/bin/run-init", "usr/bin/uniq", "usr/bin/sed", "sbin/udevd", "usr/bin/readlink", "usr/bin/expr", "usr/sbin/parted", "sbin/mke2fs", "sbin/mkswap", "sbin/swapon", "bin/chmod", "usr/bin/bc", "usr/bin/xz", "usr/bin/gzip", "bin/tar") {
            getlibs($_);
            push @filestoadd, $_;
        }
        if ($osver_host >= 11) {
            getlibs("sbin/udevadm");
            push @filestoadd, "sbin/udevadm";
        }
    }

    if ($arch =~ /64/) {
        push @filestoadd, "lib64/libnss_dns.so.2";
        push @filestoadd, "lib64/libnss_files.so.2";
    }
    else {
        push @filestoadd, "lib/libnss_dns.so.2";
        push @filestoadd, "lib/libnss_files.so.2";
    }

    # cross-platfrom support on power6&7 etc
    # ldd can't handle such one scenario: mn is power6, the target platform is power7
    if ($arch =~ /ppc64/) {
        system("cp -a -r $rootimg_dir/lib64/* /tmp/xcatinitrd.$$/lib64/");
    }


    push @filestoadd, keys %libhash;

    find(\&isnetdriver, <$rootimg_dir/lib/modules/$kernelver/*>);
    my $pathonrootimage = "$rootimg_dir/tmpfiles";
    my $pathinrootimage = "/tmpfiles";
    mkpath($pathonrootimage);
    foreach (@filestoadd) {
        if (ref($_)) {

            #print "$_->[0], $_->[1]\n";
            my $srcfile = $_->[0];
            system("chroot $rootimg_dir cp $srcfile $pathinrootimage");
            my $srcpath = "$pathonrootimage/" . basename($_->[0]);
            if (-f "$customdir/" . $_->[0]) {
                $srcpath = "$customdir/" . $_->[0];
            } elsif (-f "$pathtofiles/" . $_->[0]) {
                $srcpath = "$pathtofiles/" . $_->[0];
            }
            mkpath(dirname("/tmp/xcatinitrd.$$/" . $_->[1]));
            copy($srcpath, "/tmp/xcatinitrd.$$/" . $_->[1]);
            chmod 0755, "/tmp/xcatinitrd.$$/" . $_->[1];
        } else {

            #print "$_\n";
            system("chroot $rootimg_dir cp $_ $pathinrootimage");
            my $srcpath = "$pathonrootimage/" . basename($_);
            if (-f "$customdir/$_") {
                $srcpath = "$customdir/$_";
            } elsif (-f "$pathtofiles/$_") {
                $srcpath = "$pathtofiles/$_";
            }
            mkpath(dirname("/tmp/xcatinitrd.$$/$_"));
            copy("$srcpath", "/tmp/xcatinitrd.$$/$_");
            chmod 0755, "/tmp/xcatinitrd.$$/" . $_;
        }
    }
    rmtree($pathonrootimage);

    #copy conf files needed by nfs mount in sles11.2
    if ($osver_host >= 11)
    {
        system("cp -r $rootimg_dir/etc/protocols /tmp/xcatinitrd.$$/etc/");
        system("cp -r $rootimg_dir/etc/netconfig /tmp/xcatinitrd.$$/etc/");
    }


    # Copy udev libraries
    system("mkdir -p /tmp/xcatinitrd.$$/etc/udev");
    system("mkdir -p /tmp/xcatinitrd.$$/lib/firmware");
    system("cp -r $rootimg_dir/etc/udev/* /tmp/xcatinitrd.$$/etc/udev");
    system("cp -r $rootimg_dir/bin/uname /tmp/xcatinitrd.$$/bin/");
    if (-d "$rootimg_dir/lib/firmware/") {
        system("cp -r $rootimg_dir/lib/firmware/* /tmp/xcatinitrd.$$/lib/firmware");
    }
    system("cp -r $rootimg_dir/usr/bin/killall /tmp/xcatinitrd.$$/usr/bin");

    # Copy rules for network adapter
    #my $name = `cat /etc/sysconfig/network/ifcfg-$prinic | grep NAME`;
    #my $nic = '';
    #if ($name =~ m/(\d+\.\d+\.\d+)/g) {
    #	$nic = $&;
    #}

    # Somehow checking for *$nic.rules does not work
    #if ( -f "/etc/udev/rules.d/*$nic.rules" ) {
    #    system("cp -r /etc/udev/rules.d/*$nic.rules /tmp/xcatinitrd.$$/etc/udev/rules.d");
    #}
    #if ( -f "/etc/udev/rules.d/*persistent-net.rules" ) {
    #	    system("cp -r /etc/udev/rules.d/*persistent-net.rules /tmp/xcatinitrd.$$/etc/udev/rules.d");
    #}

    system("mkdir -p /tmp/xcatinitrd.$$/lib/udev");
    system("cp -r $rootimg_dir/lib/udev/* /tmp/xcatinitrd.$$/lib/udev");

    #copy("$rootimg_dir/lib/modules/*d","/tmp/xcatinitrd.$$/$_");
    system("cd /tmp/xcatinitrd.$$/bin/; ln -sf bash sh"); #neccessary for SLES11
    if ($mode eq "statelite") {
        system("cd /tmp/xcatinitrd.$$;find .|cpio -H newc -o|gzip -9 -c - > $destdir/initrd-statelite.gz");
        print "The initial ramdisk for statelite has been generated successfully!\n";
    } else {
        system("cd /tmp/xcatinitrd.$$;find .|cpio -H newc -o|gzip -9 -c - > $destdir/initrd-stateless.gz");
        print "The initial ramdisk for stateless has been generated successfully!\n";
    }
    system("rm -rf /tmp/xcatinitrd.$$");

}

sub isyumdir {
    if ($File::Find::name =~ /\/repodata$/) {
        my $location = $File::Find::name;
        $location =~ s/\/repodata$//;
        push @yumdirs, $location;
    }
}

sub isnetdriver {
    foreach (@ndrivers) {
        if ($File::Find::name =~ /\/$_/) {
            my $filetoadd = $File::Find::name;
            $filetoadd =~ s!$rootimg_dir!!;
            push @filestoadd, [ $filetoadd, "lib/$_" ];
            print "Added driver $_ to initrd\n";
        }
    }
}







sub postscripts {    # TODO: customized postscripts
    generic_post();
    unless (-d "$rootimg_dir/opt/xcat/") {
        mkdir "$rootimg_dir/opt/xcat/";
    }
    copy("$installroot/postscripts/xcatdsklspost", "$rootimg_dir/opt/xcat/"); #TODO: it is not used in stateless
    chmod '0755', "$rootimg_dir/opt/xcat/xcatdsklspost";
}

sub generic_post { # This function is meant to leave the image in a state approximating a normal install
    my $cfgfile;

    #modify /etc/sysconfig/clock in the image:HWCLOCK="--local", TIMEZONE=site:timezone
    if ($timezone) {
        if (-e "$rootimg_dir/etc/sysconfig/clock") {
            system("sed  -i '" . 's!\(TIMEZONE=\).*!\1' . "\"$timezone\"!" . "' $rootimg_dir/etc/sysconfig/clock");
        }
        system("chroot $rootimg_dir zic -l $timezone");
    }

    if (-e "$rootimg_dir/etc/sysconfig/clock") {
        system("sed  -i 's!\\(HWCLOCK=\\).*!\\1\"--localtime\"!' $rootimg_dir/etc/sysconfig/clock");
    }

    unlink("$rootimg_dir/dev/null");
    system("mknod $rootimg_dir/dev/null c 1 3");
    open($cfgfile, ">", "$rootimg_dir/etc/fstab");
    print $cfgfile "devpts  /dev/pts devpts   gid=5,mode=620 0 0\n";
    print $cfgfile "tmpfs   /dev/shm tmpfs    defaults       0 0\n";
    print $cfgfile "proc    /proc    proc     defaults       0 0\n";
    print $cfgfile "sysfs   /sys     sysfs    defaults       0 0\n";
    if ($tmplimit) {
        print $cfgfile "tmpfs   /tmp     tmpfs    defaults,size=$tmplimit       0 2\n";
        print $cfgfile "tmpfs   /var/tmp     tmpfs    defaults,size=$tmplimit       0 2\n";
    } else {
        print $cfgfile "tmpfs   /tmp    tmpfs   defaults,size=10m       0 2\n";
        print $cfgfile "tmpfs   /var/tmp    tmpfs   defaults,size=10m   0 2\n";
    }

    my $rootfs_name = $profile . "_" . $arch;
    print $cfgfile "$rootfs_name    /   tmpfs   rw  0 1\n";

    close($cfgfile);

    open($cfgfile, ">", "$rootimg_dir/etc/sysconfig/network");
    print $cfgfile "NETWORKING=yes\n";
    close($cfgfile);

    open($cfgfile, ">", "$rootimg_dir/etc/resolv.conf");
    print $cfgfile "#Dummy resolv.conf to make boot cleaner";
    close($cfgfile);

    # Create the ifcfg-x file for diskless node. But keep the ONBOOT=no
    # to skip the break of nfs-based boot
    if ($prinic) {
        open($cfgfile, ">", "$rootimg_dir/etc/sysconfig/network/ifcfg-$prinic");
        print $cfgfile "ONBOOT=no\nBOOTPROTO=dhcp\nDEVICE=$prinic\nSTARTMODE=auto\n";
        close($cfgfile);
    }

    foreach (split /,/, $othernics) {
        next if (/^$/);
        open($cfgfile, ">", "$rootimg_dir/etc/sysconfig/network/ifcfg-$_");
        print $cfgfile "ONBOOT=yes\nBOOTPROTO=dhcp\nDEVICE=$_\nSTARTMODE=auto\n";
        close($cfgfile);
    }

    # securetty not needed on s390x
    if ($arch ne "s390x") {
        open($cfgfile, ">>", "$rootimg_dir/etc/securetty");
        print $cfgfile "ttyS0\n";
        print $cfgfile "ttyS1\n";
        print $cfgfile "console\n";
        close($cfgfile);
    }

    my @passwd;
    open($cfgfile, "<", "$rootimg_dir/etc/passwd");
    @passwd = <$cfgfile>;
    close($cfgfile);
    open($cfgfile, ">", "$rootimg_dir/etc/passwd");
    foreach (@passwd) {
        if (/^root:/) {
            s/^root:\*/root:x/;
        }
        print $cfgfile $_;
    }
    close($cfgfile);
    foreach (<$rootimg_dir/etc/skel/.*>) {
        next if (basename($_) eq '.' or basename($_) eq '..');
        copy $_, "$rootimg_dir/root/";
    }

    # gettyset is not found on s390x
    if ($arch ne "s390x") {
        open($cfgfile, ">", "$rootimg_dir/etc/init.d/gettyset");
        print $cfgfile "#!/bin/bash\n";
        print $cfgfile "### BEGIN INIT INFO\n";
        print $cfgfile "# Provides: gettyset\n";
        print $cfgfile "# Required-Start: sshd\n";
        print $cfgfile "# Required-Stop:\n";
        print $cfgfile "# Default-Start: 3\n";
        print $cfgfile "# Default-Stop: 0 1 2 6\n";
        print $cfgfile "# Short-Description: gettyset\n";
        print $cfgfile "# Description:\n";
        print $cfgfile "### END INIT INFO\n";
        print $cfgfile "VERS=`grep VERSION /etc/SuSE-release`\n";
        print $cfgfile "if [ -n \"\$VERS\" ]; then\n";
        print $cfgfile "  VERNUM=`echo \$VERS|awk -F= \'{print \$2}\'|sed -e \'s/ //g\'`\n";
        print $cfgfile "fi\n";
        print $cfgfile "if [ \"\$VERNUM\" -gt 10 ]; then\n";
        print $cfgfile "  exit\n";
        print $cfgfile "fi\n";
        print $cfgfile "\n";
        print $cfgfile "for i in `cat /proc/cmdline`; do\n";
        print $cfgfile '  KEY=`echo $i|cut -d= -f 1`' . "\n";
        print $cfgfile "  if [ \"\$KEY\" == \"console\" -a \"\$i\" != \"console=tty0\" ]; then\n";
        print $cfgfile "    VALUE=`echo \$i | cut -d= -f 2`\n";
        print $cfgfile "     COTTY=`echo \$VALUE|cut -d, -f 1`\n";
        print $cfgfile "     COSPEED=`echo \$VALUE|cut -d, -f 2|cut -dn -f 1`\n";
        print $cfgfile "     if echo \$VALUE | grep n8r; then\n";
        print $cfgfile "        FLOWFLAG=\"-h\"\n";
        print $cfgfile "     fi\n";
        print $cfgfile "     echo xco:2345:respawn:/sbin/agetty \$FLOWFLAG \$COTTY \$COSPEED xterm >> /etc/inittab\n";
        print $cfgfile "     init q\n";
        print $cfgfile "  fi\n";
        print $cfgfile "done\n";
        print $cfgfile "/etc/init.d/boot.localnet start\n";

        close($cfgfile);
        chmod(0755, "$rootimg_dir/etc/init.d/gettyset");
    }

    copy("$installroot/postscripts/xcatpostinit", "$rootimg_dir/etc/init.d/xcatpostinit");
    chmod(0755, "$rootimg_dir/etc/init.d/xcatpostinit");

    #
    # set certain system services to start on boot, if the file exists in /etc/init.d as a script,
    # use insserv to start it.  If not, assume that the service is controlled by systemctl
    #
    # note: insserv is passed the -f option to ignore the dependency on sles10.4
    #
    print "[genimage] setting services to start at boot time...\n";
    my @services;
    push @services, qw/sshd network gettyset xcatpostinit/;

    foreach my $service (@services) {
        my $cmd = "chroot $rootimg_dir ";
        if (-r "$rootimg_dir/etc/init.d/$service") {
            $cmd = $cmd . "insserv -f $service";
            system("$cmd");
        }
        else {
            $cmd = $cmd . "systemctl start $service.service";
            system("$cmd");
        }
    }

    #
    # Check if .depend.start file exists.  For SLES12 and later OS, this does not apply
    #
    if (-r '$rootimg_dir/etc/init.d/.depend.start') {
        my $rc = system("grep sshd $rootimg_dir/etc/init.d/.depend.start | grep TARGETS");
        if ($rc) {
            system("sed -i '" . 's/^\(TARGETS = .*\)$/\1 sshd/' . "' $rootimg_dir/etc/init.d/.depend.start");
            system("ln -s ../sshd $rootimg_dir/etc/init.d/rc3.d/S20sshd");
        }
        my $rc = system("grep gettyset $rootimg_dir/etc/init.d/.depend.start | grep TARGETS");
        if ($rc) {
            system("sed -i '" . 's/^\(TARGETS = .*\)$/\1 gettyset/' . "' $rootimg_dir/etc/init.d/.depend.start");
            system("ln -s ../gettyset $rootimg_dir/etc/init.d/rc3.d/S60gettyset");
        }
    }
}


my $driver_name;
my $real_path;

sub get_path ()
{
    if ($File::Find::name =~ /\/$driver_name/) {
        $real_path = $File::Find::name;
    }
}

my @all_real_path;

sub get_all_path ()
{
    if ($File::Find::name =~ /\/$driver_name/) {
        push @all_real_path, $File::Find::name;
    }
}

# Load driver disk and driver rpm to the initrd
# Get the driver disk or driver rpm from the osimage.driverupdatesrc
# The valid value: dud:/install/dud/dd.img,rpm:/install/rpm/d.rpm, if missing the tag: 'dud'/'rpm'
# the 'rpm' is default.
#
# If cannot find the driver disk from osimage.driverupdatesrc, will try to search driver disk
# from /install/driverdisk/<os>/<arch>
#
# For driver rpm, the driver list will be gotten from osimage.netdrivers. If not set, copy all the drivers from driver
# rpm to the initrd.
#
# Return the driver names by loading order

sub load_dd()
{
    my @dd_list;
    my @rpm_list;
    my @driver_list;

    my $Injectalldriver;
    my @rpm_drivers;

    # Parse the parameters to the the source of Driver update disk and Driver rpm, and driver list as well
    if ($driverupdatesrc) {
        my @srcs = split(',', $driverupdatesrc);
        foreach my $src (@srcs) {
            if ($src =~ /dud:(.*)/i) {
                push @dd_list, $1;
            } elsif ($src =~ /rpm:(.*)/i) {
                push @rpm_list, $1;
            } else {
                push @rpm_list, $src;
            }
        }
    }
    if (!@dd_list) {

        # get Driver update disk from the default path if not specified in osimage
        # check the Driver Update Disk images, it can be .img or .iso
        if (-d "$installroot/driverdisk/$osver/$arch") {
            @dd_list = `find $installroot/driverdisk/$osver/$arch -type f`;
        }
    }

    foreach (split /,/, $netdriver) {
        if (/^allupdate$/) {
            $Injectalldriver = 1;
            next;
        }
        unless (/\.ko$/) {
            s/$/.ko/;
        }
        push @driver_list, $_;
    }

    chomp(@dd_list);
    chomp(@rpm_list);

    unless (@dd_list || (@rpm_list && ($Injectalldriver || @driver_list))) {
        return ();
    }

    # Create the work space, it should be cleaned at end of genimage
    my $dd_dir = mkdtemp("/tmp/ddtmpXXXXXXX");
    mkpath "$dd_dir/mnt";
    mkpath "$dd_dir/mods";

    my @dd_drivers = ();    #driver names

    # Load drivers from each Driver Disk
    # For multiple dd, if want to make it has order, rename the dd with a number
    # ahead of the name like 0_xx, 1_xx
    foreach my $dd (sort(@dd_list)) {
        my $rc = system("mount -o loop $dd $dd_dir/mnt");
        if ($rc) {
            print "mount the Driver Disk $dd failed.\n";
            next;
        }

        mkpath "$dd_dir/full";

        # Copy out the drivers
        opendir(DIR, "$dd_dir/mnt") || die "Cannot open dir $dd_dir/mnt";
        while (my $dir = readdir(DIR)) {
            if ($dir =~ /^\./) { next; }

            # Every driver update disk can have multiple directories, each directory
            # has the directory format like /linux/[distribution]/[architechture]-[version]/
            # If the directory name is numeric, then it will be used as order to load the
            # the dirviers inside.
            # For the directory name which is not numeric, copy them to directory 0. It will be
            # loaled first.
            if ($dir !~ /^\d*$/) {
                mkpath "$dd_dir/full/0";
                system("cp -rf $dd_dir/mnt/$dir $dd_dir/full/0");
            } else {
                system("cp -rf $dd_dir/mnt/$dir $dd_dir/full/");
            }
        }
        closedir(DIR);

        # Get all the kernel modules base on the order of directory name.

        # The structure of dd: <order>/linux/[distribution]/[architechture]-[version]/

        # The supported arch: i386, ia64, ppc, ppc64, s390, s390x sparc or x86_64.
        my $darch = $arch;
        if ($darch =~ /^x86$/) {
            $darch = "i386";
        }

        # If the version is os version. If the os is "sles11.1", the possible os version
        # could be "sles11.1", "11.1", "11", "sles11"
        my @distro  = ($osver);
        my $distro1 = $osver;
        $distro1 =~ s/[^\d]*//;
        push @distro, $distro1;
        my $distro2 = $distro1;
        $distro2 =~ s/\..*//;
        push @distro, $distro2;
        my $distro3 = $osver;
        $distro3 =~ s/\..*//;
        push @distro, $distro3;

        opendir(FDIR, "$dd_dir/full") || die "Cannot open dir $dd_dir/full";
        my @fulldir = readdir(FDIR);
        closedir(FDIR);

        # Create the directory for drivers from driver disk
        if (!-d "$rootimg_dir/lib/modules/$kernelver/kernel/drivers/driverdisk") {
            mkpath "$rootimg_dir/lib/modules/$kernelver/kernel/drivers/driverdisk";
        }

        # Copy the drivers to the root image and get the driver loading order
        foreach my $dir (sort(@fulldir)) {
            if ($dir =~ /^\./) { next; }
            my $vdir;
            foreach (@distro) {
                if (-d "$dd_dir/full/$dir/linux/suse/$darch-$_") {
                    $vdir = "$dd_dir/full/$dir/linux/suse/$darch-$_";
                }
            }
            if (!$vdir) { next; }

            # Use the module_order if it has
            if (-f "$vdir/modules/module.order") {
                open(ORDER, "<", "$vdir/modules/module.order");
                while (my $file = <ORDER>) {
                    chomp($file);
                    if (-f "$vdir/modules/$file") {
                        $driver_name = $file;
                        $real_path   = "";
                        find(\&get_path, <$rootimg_dir/lib/modules/$kernelver/*>);
                        if ($real_path eq "") {
                            system("cp $vdir/modules/$file $rootimg_dir/lib/modules/$kernelver/kernel/drivers/driverdisk");
                        } else {
                            system("cp $vdir/modules/$file $real_path");
                        }

                        push @dd_drivers, $file;
                    }
                }
            } else {
                opendir(MDIR, "$vdir/modules") || die "Cannot open dir $vdir/modules";
                while (my $file = readdir(MDIR)) {
                    if (-f "$vdir/modules/$file" && $file =~ /\.ko/) {
                        $driver_name = $file;
                        $real_path   = "";
                        find(\&get_path, <$rootimg_dir/lib/modules/$kernelver/*>);
                        if ($real_path eq "") {
                            system("cp $vdir/modules/$file $rootimg_dir/lib/modules/$kernelver/kernel/drivers/driverdisk");
                        } else {
                            system("cp $vdir/modules/$file $real_path");
                        }

                        push @dd_drivers, $file;
                    }
                }
            }
        }

        rmtree "$dd_dir/full";

        my $rc = system("umount -f $dd_dir/mnt");
        if ($rc) {
            print "umount the directory $dd_dir/mnt failed\n";
            exit 1;
        }
    }

    # Loading the drivers from rpm packages
    if (@rpm_list && ($Injectalldriver || @driver_list)) {

        # Extract the files from rpm to the tmp dir
        mkpath "$dd_dir/rpm";
        foreach my $rpm (@rpm_list) {
            if (-r $rpm) {
                if (system("cd $dd_dir/rpm; rpm2cpio $rpm | cpio -idum")) {
                    print "Error: Cannot extract the files from the rpm $rpm.\n";
                }
            } else {
                print "Error: Cannot read the rpm $rpm.\n";
            }
        }

        # To skip the conflict of files that some rpm uses the xxx.ko.new as the name of the driver
        # Change it back to xxx.ko here
        $driver_name   = "\*ko.new";
        @all_real_path = ();
        find(\&get_all_path, <$dd_dir/rpm/*>);
        foreach my $file (@all_real_path) {
            my $newname = $file;
            $newname =~ s/\.new$//;
            if (system("mv -f $file $newname")) {
                print "Error: Could not rename $file\n";

            }
        }

        # Copy the firmware to the rootimage
        if (-d "$dd_dir/rpm/lib/firmware") {
            system("cp -rf $dd_dir/rpm/lib/firmware $rootimg_dir/lib");
        }

        # if $ignorekernelchk is specified, copy all driver files to target kernel dir
        if ($ignorekernelchk) {
            my @kernelpath4vrpm = <$dd_dir/rpm/lib/modules/*>;
            foreach my $path (@kernelpath4vrpm) {
                if ($path eq "$dd_dir/rpm/lib/modules/$kernelver") {
                    next;
                }

                unless (-d "$dd_dir/rpm/lib/modules/$kernelver") {
                    mkpath "$dd_dir/rpm/lib/modules/$kernelver";
                }
                system("/bin/cp -rf $path/* $dd_dir/rpm/lib/modules/$kernelver");
            }
        }

        # Copy the drivers to the rootimage
        if (-d "$dd_dir/rpm/lib/modules/$kernelver") {

            #mkpath "$rootimg_dir/lib/modules/$kernelver/updates/";
            if (@driver_list) {
                foreach my $driver (@driver_list) {
                    $driver_name = $driver;
                    $real_path   = "";
                    find(\&get_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
                    if ($real_path && $real_path =~ m!$dd_dir/rpm(/lib/modules/$kernelver/.*?)[^\/]*$!) {

                        # remove the old one if existing
                        @all_real_path = ();
                        find(\&get_all_path, <$rootimg_dir/lib/modules/$kernelver/*>);
                        foreach (@all_real_path) {
                            if (-r $_) {
                                unlink($_);
                            }
                        }

                        if (!-d "$rootimg_dir$1") {
                            mkpath "$rootimg_dir$1";
                        }
                        system("cp -rf $real_path $rootimg_dir$1");
                        push @rpm_drivers, $driver;
                    } else {
                        print "Warning: cannot find the driver $driver from the driver rpms\n";
                    }
                }
            } elsif ($Injectalldriver) {

                # copy all the drviers to the rootimage
                $driver_name   = "\*\.ko";
                @all_real_path = ();
                find(\&get_all_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
                my @all_drivers = @all_real_path;
                foreach my $new_driver (@all_drivers) {
                    if (basename($new_driver) =~ /\.ko$/) {

                        # remove the old one if existing
                        $driver_name   = basename($new_driver);
                        @all_real_path = ();
                        find(\&get_all_path, <$rootimg_dir/lib/modules/$kernelver/*>);
                        foreach my $old_driver (@all_real_path) {
                            if (-r $old_driver) {
                                unlink($old_driver);
                            }
                        }
                        push @rpm_drivers, basename($new_driver);
                    }
                }

                system("cp -rf $dd_dir/rpm/lib/modules/$kernelver $rootimg_dir/lib/modules/");
            }
        } else {
            print "Warning: cannot find the kernel $kernelver from drvier rpms\n";
        }

        push @dd_drivers, @rpm_drivers;
    }

    # Generate the dependency relationship
    system("chroot '$rootimg_dir' depmod $kernelver");

    # Clean the env
    rmtree "$dd_dir";

    return @dd_drivers;
}

sub usage {
    print 'Usage: genimage  -o <OSVER> [-a <arch>] -p <profile> -i <nodebootif> -n <nodenetdrivers> [-r <otherifaces>] [-k <kernelver>] [-g <krpmver>] [-l rootlimitsize] [--permission <permission>] [--interactive]' . "\n";
    print "       --permission is used for statelite only\n";
    print "Examples:\n";
    print " genimage -i eth0 -n tg3 -o sles11 -p compute\n";
    print " genimage -i eth0 -r eth1,eth2 -n tg3,bnx2 -o sles11 -p compute --interactive\n";
    print " genimage -i eth0 -n tg3,bnx2 -o sles11 -p compute\n";
    print " genimage -i eth0 -n tg3,bnx2 -o sles11 -p compute --permission 777\n";
    return 0;
}

