#!/usr/bin/env perl

# The possible files which getting from local OS that may affect he genimage cross distor level
#    /proc/self/oom_adj

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 xCAT::Utils;
use Digest::MD5 qw(md5_hex);

#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 $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 = "";    #`uname -r`;
my $krpmver;
my $basekernelver;     # = $kernelver;
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 $permission;        # the permission works only for statelite mode currently
my $tempfile;
my $prompt;
my $ignorekernelchk;
my $noupdate;
my $lock;
my $envar;


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


#helper subroutine to get the major release number
#of a osver
sub majversion {
    my $version = shift;
    my $majorrel;

    if ($osver =~ /^\D*(\d*)[.\d]*.*$/) {
        $majorrel = $1;
    }

    return $majorrel;
}

sub mount_chroot {
    my $rootimage_dir = shift;

    #postinstall script of some packages might access the /proc, /sys and /dev filesystem
    #For Redhat7 or above, mount /proc,/sys from host to avoid error messages
    #For Redhat7 or above, create /dev according to /dev on the host to avoid error messages
    #For Redhat6 or below, mount these directories might introduce error messages
    if (majversion($osver) > 6) {
        system("mkdir -p $rootimage_dir/proc");
        system("mount proc $rootimage_dir/proc -t proc");
        system("mkdir -p $rootimage_dir/sys");
        system("mount sysfs $rootimage_dir/sys -t sysfs");
        system("mkdir -p $rootimage_dir/dev");

        #system("mount devtmpfs $rootimage_dir/dev -t devtmpfs");
        system("cd /dev;find .|cpio -H newc -o >$rootimage_dir/dev/dev.archive;cd -");
        system("cd $rootimage_dir/dev;cpio -idum<./dev.archive;rm -f ./dev.archive;cd -");
    }
}



sub umount_chroot {
    my $rootimage_dir = shift;

    if(-e "$rootimage_dir"){
        $rootimage_dir=realpath($rootimage_dir);
    }
    if ($rootimage_dir eq "/") {
        print "\n\n\n\nWARNING: /proc and /sys may still be mounted in the rootimgdir\n\n\n\n";
        return 1;
    }

    #unmount all the mount points under rootimg directory
    #to avoid removing the direcoty/files on managemment node by mistake
    my @mntptlist;
    my $FILEHD=undef;
    open($FILEHD,"<","/proc/mounts");
    while(<$FILEHD>){
	my @arr=split / /;
        push @mntptlist,$arr[1] if(substr($arr[1],0,length($rootimage_dir)) eq $rootimage_dir);
    }
    close($FILEHD);
    foreach my $mntpt (@mntptlist){
        system("umount -l $mntpt >/dev/null 2>&1");
    }

    if (majversion($osver) > 6) {
        #only remove the /dev in rootimg directory if it is not a mount point
        system("findmnt $rootimage_dir/dev/ >/dev/null 2>&1 || rm -rf $rootimage_dir/dev/*");
    }

    #rpm complains "Failed to initialize NSS library" when /dev/urandom does not exist,  leave /dev/urandom
    use_devurandom();
}

#check whether a dir is NFS mounted
sub isNFSdir {
    my $dir = shift;
    my $out = qx(df -T -P $dir|tail -n 1|awk '{print \$2}');

    if ($out =~ /nfs/i)
    {
        return 1;
    }

    return 0;
}


$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,
    '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,
    'env=s'             => \$envar,
);

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);

$srcdir_otherpkgs = "$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";

$kerneldir = "$installroot/kernels" unless ($kerneldir); # the default directory for 3rd-party kernel is "$installroot/kernels";

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

# Get the subchannels of the given interface
my $subchn;
my $readChn;
my @chn;
if ($arch eq "s390x") {
    $subchn = `cat /etc/sysconfig/network-scripts/ifcfg-$prinic | grep "SUBCHANNELS"`;

    if (!$subchn) {
        print "SUBCHANNELS need to be given in /etc/sysconfig/network-scripts/ifcfg-$prinic";
        exit 1;
    } else {

        # Trim right
        $subchn =~ s/\s*$//;

        # Trim left
        $subchn =~ s/^\s*//;

        # Extract subchannels
        $subchn =~ s/SUBCHANNELS=//g;

        # Extract read channel
        @chn = split(",", $subchn);
        $readChn = @chn[0];
    }
}

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

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

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

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

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

if($onlyinitrd){
    unless(-e "$rootimg_dir"){
        print("the root image directory \"$rootimg_dir\"does not exist, please run \"genimage $imagename\" to generate the root image directory first!\n");
        exit 1;
    }
}else
{
    @yumdirs = ();

    my @pkgdirs = split(",", $srcdir);
    my @pkgdir_internet; #Put all of the http mirrors in this array
    my $dir;
    foreach $dir (@pkgdirs) {
      if ($dir =~ /^http[s]?:|^ftp:/) {
        push @pkgdir_internet, $dir;
      } else {
        find(\&isyumdir, <$dir/>);
        if (!grep /$dir/, @yumdirs) {
            print "The repository for $dir should be created before running the genimge. Try to run [createrepo $dir].\n";
        }
      }
    }

    # Add the dir for kernel rpm to be installed
    if ($kernelver) {
        find(\&isyumdir, <$kerneldir/>);
        if (!grep /$kerneldir/, @yumdirs) {
            print "The repository for $kerneldir should be created before running the genimge. Try to run [createrepo $kerneldir].\n";
        }
    }
    unless (scalar(@yumdirs) || scalar(@pkgdir_internet)) {
       print "Need $installroot/$osver/$arch/ available from a system that has ran copycds on $osver $arch or correct web repo\n";
        exit 1;
    }


    mkpath "$rootimg_dir";
    my $yumconfig;
    open($yumconfig, ">", "/tmp/genimage.$$.yum.conf");

    #yum/rpm/zypper has defect on calculating diskspace usage when installing rpm on a NFS mounted installroot
    if (isNFSdir("$rootimg_dir")) {
        print $yumconfig "[main]\ndiskspacecheck=0\n\n";
    }

    my $repnum = 0;
    foreach $srcdir (@yumdirs) {
        print $yumconfig "[$osver-$arch-$repnum]\nname=$osver-$arch-$repnum\nbaseurl=file://$srcdir\ngpgpcheck=0\nskip_if_unavailable=True\n\n";
        $repnum += 1;
    }
    foreach $srcdir (@pkgdir_internet) {
       print $yumconfig "[$osver-$arch-$repnum]\nname=$osver-$arch-$repnum\nbaseurl=$srcdir\ngpgpcheck=0\nskip_if_unavailable=True\n\n";
       $repnum += 1;
    }
    $repnum -= 1;
    close($yumconfig);
    mkpath "$rootimg_dir/etc";


    my $fd;
    open($fd, ">>", "$rootimg_dir/etc/fstab");
    print $fd "#Dummy fstab for rpm postscripts to see\n";
    close($fd);

    my $non_interactive;
    if (!$prompt) { $non_interactive = "-y"; }

    my $yumcmd = "yum $non_interactive -c /tmp/genimage.$$.yum.conf --installroot=$rootimg_dir/ --disablerepo=* ";

    if ($osver =~ /^rhel\D*(\d*)[.\d]*.*$/) {
        $majorrel = $1;
        if ($majorrel > 7) {
            $yumcmd .= "--releasever=" . $majorrel . " ";
            $yumcmd .= "--setopt=module_platform_id=platform:el" . $majorrel . " ";
        }
    }

    foreach (0 .. $repnum) {
        $yumcmd .= "--enablerepo=$osver-$arch-$_ ";
    }

    mkpath("$rootimg_dir/var/lib/yum");

    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 $retcode;
    ($retcode,$lock)=xCAT::Utils->acquire_lock_imageop($rootimg_dir);
    if($retcode){
        print "$lock";
        exit 1;
    }

    my @envarlist=split(',',$envar);
    foreach my $entry (@envarlist){
        my ($key,$value)=split('=',$entry);
        $ENV{xCAT::Utils->strim($key)}=xCAT::Utils->strim($value);
    }

    mount_chroot($rootimg_dir);
    my %pkg_hash = imgutils::get_package_names($pkglist);

    my $index = 1;
    my $pass;
    foreach $pass (sort { $a <=> $b } (keys(%pkg_hash))) {
        my $pkgnames = "";
        foreach (keys(%{ $pkg_hash{$pass} })) {
            if ($_ eq "INCLUDEBAD") {
                print "Unable to open the following pkglist files:\n" . join("\n", @{ $pkg_hash{$pass}{INCLUDEBAD} });
                umount_chroot($rootimg_dir);
                exit 1;
            }

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

            # replace the kernel package (and headers, tools, etc) with the specific version
            foreach my $p (@$pa) {
                if ($kernelver && $p =~ /^kernel(-headers|-devel|-bootwrapper|-tools)?$/) {
                    my $kernelname;
                    if ($krpmver) {
                        $kernelname = $p . "-" . $krpmver;
                    } else {
                        $kernelname = $p . "-" . $kernelver;
                    }
                    my $searchkern = $yumcmd . " list $kernelname -q";
                    my @kernpkgs   = `$searchkern`;
                    my $found      = 0;
                    foreach my $k (@kernpkgs) {
                        if ($k =~ /\s*$p\.[^\s]*\s+([\w\.-]+)/) {
                            my $version = $1;
                            if ($kernelver =~ /$version/) {
                                $found++;
                            }
                        }
                    }
                    if ($found eq 0) {
                        print "Cannot find the $p package with version $kernelver.\n";
                        umount_chroot($rootimg_dir);
                        exit 1;
                    }
                    push @npa, $kernelname;
                }
                elsif ($p =~ /^@/) {
                    push @npa, "\"$p\"";
                }
                else {
                    push @npa, $p;
                }
            }
            $pkgnames .= " " . join(' ', @npa);
        }
        my $envlist;
        if (exists $pkg_hash{$pass}{ENVLIST}) {
            $envlist = join(' ', @{ $pkg_hash{$pass}{ENVLIST} });
        }

        print "$envlist $yumcmd install $pkgnames\n";
        my $rc = system("$envlist $yumcmd install $pkgnames");
        if ($rc) {
            print "yum invocation failed\n";
            umount_chroot($rootimg_dir);
            exit 1;
        }
    }

    #Now let's handle 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, $pathtofiles, "otherpkgs.pkglist"); }
    }
    my %extra_hash = ();
    if ($otherpkglist) {
        $updates{'otherpkglist'} = $otherpkglist if ($tempfile);
        %extra_hash = imgutils::get_package_names($otherpkglist);
    }
    my %extrapkgnames;
    my %repohash;



    if (keys(%extra_hash) > 0) {
        my @otherpkgdir_url;
        my @otherpkgdir_local;
        foreach my $tmpdir (split ',', $srcdir_otherpkgs){
            if($tmpdir =~ /^http[s]?:|^ftp:/){
                push @otherpkgdir_url, $tmpdir;
            }else{
                push @otherpkgdir_local,$tmpdir;
            }
        }

        if(scalar @otherpkgdir_local >1){
            print "genimage: at most only 1 local dir in otherpkgdir is supported.\n";
            exit 1;
        }

        my $srcdir_otherpkgs_local;
        if(scalar @otherpkgdir_local == 1){
            $srcdir_otherpkgs_local=$otherpkgdir_local[0];
        }

        open($yumconfig, ">>", "/tmp/genimage.$$.yum.conf");
        my $index = 1;
        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} });
                    umount_chroot($rootimg_dir);
                    exit 1;
                }

                if (($_ eq "PRE_REMOVE") || ($_ eq "POST_REMOVE") || ($_ eq "ENVLIST")) { next; }
                foreach(@otherpkgdir_url){
                    print $yumconfig "[otherpkgs$index]\nname=otherpkgs$index\nbaseurl=$_\ngpgpcheck=0\nskip_if_unavailable=True\n\n";
                    $repohash{$pass}{$index} = 1;
                    $index++;
                }

                print $yumconfig "[otherpkgs$index]\nname=otherpkgs$index\nbaseurl=file://$srcdir_otherpkgs_local/$_\ngpgpcheck=0\nskip_if_unavailable=True\n\n";
                $repohash{$pass}{$index} = 1;
                $index++;
                my $pa = $extra_hash{$pass}{$_};
                $extrapkgnames{$pass} .= " " . join(' ', @$pa);
            }
        }
        close($yumconfig);
        $index--;
        my $yumcmd_base = "yum $non_interactive -c /tmp/genimage.$$.yum.conf --installroot=$rootimg_dir/ --disablerepo=* ";

        #yum/rpm/zypper has defect on calculating diskspace usage when installing rpm on a NFS mounted installroot
        if (isNFSdir("$rootimg_dir")) {
            $yumcmd_base .= "--setopt=diskspacecheck=0 ";
        }

        foreach (0 .. $repnum) {
            $yumcmd_base .= "--enablerepo=$osver-$arch-$_ ";
        }

        # Hack uname when deal otherpkgs
        use_hackuname($arch, $kernelver);
        use_devnull();


        foreach $pass (sort { $a <=> $b } (keys(%extra_hash))) {
            $yumcmd = $yumcmd_base;
            foreach my $repo_index (keys %{ $repohash{$pass} }) {
                $yumcmd .= "--enablerepo=otherpkgs$repo_index ";
            }

            system("$yumcmd clean all");

            my $envlist;
            if (exists($extra_hash{$pass}{ENVLIST})) {
                $envlist = join(' ', @{ $extra_hash{$pass}{ENVLIST} });
            }

            # remove the packages that are specified in the otherpkgs.list files with leading '-'
            my $yumcmd_remove = "$yumcmd erase ";
            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\n";
                    $rc = system("$envlist $yumcmd_remove $rm_packges");
                }
            }

            #            # mount /proc file system since several packages need it.
            #            print "mount /proc file system\nchroot $rootimg_dir /bin/mount -t proc proc /proc\n";
            #            system("chroot $rootimg_dir /bin/mount -t proc proc /proc");

            # install extra packages
            my $yumcmd_base = $yumcmd;
            $yumcmd .= "install ";

            # append extra pkg names to yum command
            if ($extrapkgnames{$pass}) {
                $yumcmd .= " $extrapkgnames{$pass} ";
                $yumcmd =~ s/ $/\n/;

                # debug
                #print "yumcmd=$yumcmd\n";
                #my $repo=`cat /tmp/genimage.$$.yum.conf`;
                #print "repo=$repo";

                print "$envlist $yumcmd\n";
                my $rc = system("$envlist $yumcmd");
                if ($rc) {
                    print "yum invocation failed\n";

                    # remove the hacked uname file
                    unuse_hackuname();
                    umount_chroot($rootimg_dir);
                    exit 1;
                }
            } else {
                print "No Packages marked for install\n";
            }

            #            # umount /proc file system that just mounted
            #            print "umount /proc file system\nchroot $rootimg_dir /bin/umount /proc\n";
            #            system("chroot $rootimg_dir /bin/umount /proc");

            # 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\n";
                    $rc = system("$envlist $yumcmd_remove $rm_packges");
                }
            }
            $yumcmd = $yumcmd_base;

            if (!$noupdate) {

                # run yum update to update any installed rpms
                # needed when running genimage again after updating software in repositories
                # exclude updating the kernel if a specific version was specified
                my $excludecmd = $kernelver ? " --exclude=kernel\*" : "";
                my $yumcmd_update = $yumcmd_base . $excludecmd . " update  ";
                $rc = system("$yumcmd_update");
            }
        }

        # use the original uname binary
        unuse_hackuname();
    }

    umount_chroot($rootimg_dir);

    # ignore any return code
    postscripts();    #run 'postscripts'
}

#get the rpm version, if the rpm version is different then the db verison may change.
my $mnrpmver = `rpm --version | awk  '{print \$3}'`;
my $cnrpmver = `chroot $rootimg_dir rpm --version | awk '{print \$3}'`;
if ($mnrpmver ne $cnrpmver) {

    #fine all db file witch should be rebuided
    my $filelist = `file $rootimg_dir/var/lib/rpm/* | grep 'Berkeley DB' | awk -F : '{print \$1}'`;

    my @files = split '\n', $filelist;

    system("rm -rf $rootimg_dir/var/lib/rpm/__db*");
    foreach my $file (@files) {
        my $filename = basename($file);

        #dump the db file to a normal test file with the db_dump on the mn
        system("db_dump $file > $rootimg_dir/tmp/$filename.dbtmp9");
        unlink("$rootimg_dir/var/lib/rpm/$filename");

        #chroot to the rootimage and run db_load
        system(" chroot $rootimg_dir db_load -f /tmp/$filename.dbtmp9 /var/lib/rpm/$filename");
    }
    system("rm -rf $rootimg_dir/tmp/*.dbtmp9");

    #rebuild rpm db file in rootimage for cn
    system(" chroot $rootimg_dir rpm --rebuilddb");
}

# 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

# Kernel name for s390x should be the same: vmlinuz-2.6.18-164.el5
my @KVERS = <$rootimg_dir/boot/vmlinuz-*>;
foreach (@KVERS) {
    s/vmlinuz-//;
}

@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-$kernelver") {
    cp("$rootimg_dir/boot/vmlinux-$kernelver", "$destdir/kernel");
} elsif (-e "$rootimg_dir/boot/vmlinuz-$kernelver") {
    cp("$rootimg_dir/boot/vmlinuz-$kernelver", "$destdir/kernel");
} elsif (-e "$rootimg_dir/boot/image-$kernelver") {
    cp("$rootimg_dir/boot/image-$kernelver", "$destdir/kernel");
} elsif (-e "$rootimg_dir/lib/modules/$kernelver/vmlinuz") {
    cp("$rootimg_dir/lib/modules/$kernelver/vmlinuz", "$destdir/kernel");
} else {
    xdie("couldn't find the kernel file matched $kernelver in $rootimg_dir/boot");
}

# 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);
}

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+/, $_;
        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;

my $dracutver;

unlink "/tmp/genimage.$$.yum.conf";
if ((-d "$rootimg_dir/usr/share/dracut") or (-d "$rootimg_dir/usr/lib/dracut")) {
    $dracutmode = 1;

    # get dracut version
    $dracutver = `rpm --root $rootimg_dir -qi dracut | grep Version | awk -F' ' '{print \$3}'`;
    chomp($dracutver);
    if ($dracutver =~ /^\d\d\d$/) {
        if ($dracutver >= "047") {
            $dracutdir = "dracut_047";
        } elsif ($dracutver >= "033") {
            $dracutdir = "dracut_033";
        } else {
            $dracutdir = "dracut";    # The default directory
        }
    }
    print "Enter the dracut mode. Dracut version: $dracutver. Dracut directory: $dracutdir.\n";
}


#-- for centos, disable the internet repository
if (-e "$rootimg_dir/etc/yum.repos.d/CentOS-Base.repo") {
    my $repo_content = `sed -e '/enabled/d' $rootimg_dir/etc/yum.repos.d/CentOS-Base.repo | sed -e '/^gpgkey/i enabled=0'`;
    system("echo '$repo_content' > $rootimg_dir/etc/yum.repos.d/CentOS-Base.repo");
}
#

#-- 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) {

    use_hackuname($arch, $kernelver);

    $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 $rawpostinstall (split /,/, $postinstall_filename) {
        my ($postinstall,@args)=split(" ",$rawpostinstall) ;
        if (!-x $postinstall) {
            print "postinstall script $postinstall is not executable\n";
            unuse_hackuname();
            exit 1;
        }

        my $rc = system($postinstall, $rootimg_dir, $osver, $arch, $profile,@args);
        if ($rc) {
            print "postinstall script $postinstall failed\n";
            unuse_hackuname();
            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)};

    unuse_hackuname();
}

# all the attributes have been gathered
# now, update the linuximage and osimage tables
# TODO: do statelite and stateless share the same attributes?
#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{'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


# statelite .statelite directory added here.
# this is where tmpfs will be created.

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

# this script will get the directories.
# TODO: the file is re-copied in liteimg.pm
my $cwd = $FindBin::Bin;
unless (-f "$cwd/../add-on/statelite/rc.statelite") {
    print "Can't find $cwd/../add-on/statelite/rc.statelite!\n";
    exit 1;
}

system("cp $cwd/../add-on/statelite/rc.statelite $rootimg_dir/etc/init.d/statelite");
system("cp $cwd/../add-on/statelite/rc.localdisk $rootimg_dir/etc/init.d/localdisk");

# also need to add this file:
# may have already been made into a symbolic link, if so ignore it

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");
    }
}

#if ($dracutmode) {
# modify etc/rc.sysinit, prevent remounting
# TODO: need to find one way to prevent remounting
if (-f "$rootimg_dir/etc/rc.sysinit") {
    my $SYSINITFILE;
    my $TMPSYSINITFILE;

    # backup etc/rc.sysinit file before modifing it
    system("cp -a $rootimg_dir/etc/rc.sysinit $rootimg_dir/etc/rc.sysinit.backup");
    open($SYSINITFILE, "$rootimg_dir/etc/rc.sysinit");
    open($TMPSYSINITFILE, '>', "/tmp/rc.sysinit.tmp");

    # find the following lines,
    # if remount_needed ; then
    #   action $"Remounting root filesystem in read-write mode: " mount -n -o remount,rw /
    # fi
    # and change "if remount_needed ; then" to "if false; then"
    while (<$SYSINITFILE>) {
        if ($_ eq "if remount_needed ; then\n") {
            $_ = "if false; then\n";
        }
        print $TMPSYSINITFILE $_;
    }
    close($SYSINITFILE);
    close($TMPSYSINITFILE);
    cp("/tmp/rc.sysinit.tmp", "$rootimg_dir/etc/rc.sysinit");
}

#}

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

# for the genimage-enchement, need to create two initial ramdisks,
# one is for stateless
# the other one is for statelite

if ($dracutmode) {
    mkinitrd_dracut("stateless");
    mkinitrd_dracut("statelite");
} else {
    mkinitrd("statelite");
    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;
    }
}

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");
    } else {
        my $perm = (stat("$fullpath/$dracutdir/patch/syslog/check"))[2];
        cp("$fullpath/$dracutdir/patch/syslog/check", $dracutmoduledir . "98syslog/");
        chmod($perm & 07777, $dracutmoduledir . "98syslog/" . "check");

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

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

    my $dracutmpath = $dracutmoduledir . "98xcat/";
    mkpath($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");
        my $dracutmodulelist = "xcat nfs base network kernel-modules syslog";

        foreach (qw/systemd systemd-initrd dracut-systemd fadump/) {
            my ($dir) = glob($dracutmoduledir . "[0-9]*" . $_);
            if (-d $dir) {
                $dracutmodulelist .= " $_";
            }
        }

        print $DRACUTCONF qq{dracutmodules+="$dracutmodulelist"\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");

        my $dracutmodulelist = "xcat nfs base network kernel-modules syslog";

        foreach (qw/systemd systemd-initrd dracut-systemd fadump/) {
            my ($dir) = glob($dracutmoduledir . "[0-9]*" . $_);
            if (-d $dir) {
                $dracutmodulelist .= " $_";
            }
        }

        # update etc/dracut.conf
        open($DRACUTCONF, '>', "$rootimg_dir/etc/dracut.conf");
        print $DRACUTCONF qq{dracutmodules+="$dracutmodulelist"\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") {
        push @ndrivers, "nfs.ko";

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

        # Additional modules needed on s390x
        if ($arch eq "s390x") {

            # The network drivers need to be loaded in this order
            unshift @ndrivers, "ccwgroup.ko";
            unshift @ndrivers, "qdio.ko";
        }
    }

    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.$$/lib64/firmware");
    mkpath("/tmp/xcatinitrd.$$/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/dhclient");
    my $inifile;

    # start writing to the init script.
    open($inifile, ">", "/tmp/xcatinitrd.$$/init");
    print $inifile "#!/sbin/busybox.anaconda sh\n";

    # 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 is 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 "busybox.anaconda mount -t proc /proc /proc\n";
    print $inifile "busybox.anaconda --install\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/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";

    foreach (@ndrivers) {
        print $inifile "insmod /lib/$_\n";
    }


    # Start udev on s390x
    if ($arch eq "s390x") {
        print $inifile <<EOMS;
# Start udev to find devices attached to node
echo `/sbin/udevd --daemon`
echo `/sbin/udevtrigger`
echo `/sbin/udevsettle`
sleep 1
echo `/sbin/depmod`

# Setup network scripts
echo "NETWORKING=yes" > /etc/sysconfig/network

echo "ONBOOT=yes" > /etc/sysconfig/network-scripts/ifcfg-$prinic
echo "BOOTPROTO=dhcp" >> /etc/sysconfig/network-scripts/ifcfg-$prinic
echo "DEVICE=$prinic" >> /etc/sysconfig/network-scripts/ifcfg-$prinic
echo 'OPTIONS="layer2=1"' >> /etc/sysconfig/network-scripts/ifcfg-$prinic
echo "SUBCHANNELS=$subchn" >> /etc/sysconfig/network-scripts/ifcfg-$prinic

# Turn on network devices
echo $subchn > /sys/bus/ccwgroup/drivers/qeth/group
echo 1 > /sys/bus/ccwgroup/drivers/qeth/$readChn/layer2
echo 1 > /sys/bus/ccwgroup/drivers/qeth/$readChn/online
echo "alias $prinic qeth" >> /etc/modprobe.conf
echo `ifup $prinic`
sleep 4
EOMS
    }

    print $inifile <<EOMS;
# check and see if debug is specified on command line
grep '\(debug\)' /proc/cmdline > /dev/null && export DEBUG=1

# check the kernel parameter at first

# if one parameter for the booting device is there, we will use it
# TODO
# ( netdevice is recognized by SLES, )
# ( Dracut has one "network" module to handle the booting network devices, which use "ifname" )
# ( What should the other redhat versions use ?  netdev=<eth0> and BOOTIF=<mac address> )

# besides this action, the following code is also used to get the XCAT= value, which is for XCAT server
# TODO: does "anaconda.busybox sh" support "set " ?

PRINIC=$prinic
NODESTATUS='y'

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}'`
        BOOTIF=\`ip  -oneline link show |grep -i \$VALUE|awk -F ':' '{print \$2}'|grep -o \"[^ ]\+\( \+[^ ]\+\)*\"\`
    elif [ "\$KEY" == 'XCAT' ]; then
        VALUE=`echo \$i |awk -F= '{print \$2}'`
        # format: XCAT=xcatmaster:3001
        XCATSERVER=\$VALUE
    elif [ "\$KEY" == 'XCATIPORT' ]; then
        VALUE=`echo \$i |awk -F= '{print \$2}'`
        # format: XCAT=xcatmaster:3001
        XCATIPORT=\$VALUE
    fi
    #if "nonodestatus" specified,do not update the nodestatus
    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
echo network --device \$IFACE --bootproto dhcp >> /bin/netstart

netstart \$IFACE
while ! ifconfig | grep inet; do
    echo -e "\${RED}Failed to acquire address, retrying \${RESET}"
    sleep 5
    netstart \$IFACE
done
ifconfig lo 127.0.0.1
ifconfig lo up

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

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

#update nodelist.nodestatus to "netbooting"
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
            ST=`expr \$RANDOM % 5`
            sleep \$ST
            rm -f \$FILENAME
          fi
        done
      fi
      if [ "nfs" == "`echo \$VALUE|awk -F: '{print \$1}'`" ]; then
        NFS=1
        SERVER=`echo \$VALUE|awk -F/ '{print \$3}'`
        ROOTDIR=`echo \$VALUE|awk -F/ '{for(i=4;i<=NF;i++) printf "/%s",\$i}'`
      fi
   # for NFS root
   elif [ "\$KEY" == 'NFSROOT' ]; then
	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}'`
        # the 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


echo 0 > /proc/sys/vm/zone_reclaim_mode #Avoid kernel bug

# STATELITE code here:
if [ "\$STATELITE" = "1" ]; then
    echo Setting up Statelite
    # for loop back mouting capability!
    mknod /dev/loop0 b 7 0
    mkdir -p \$NEWROOT
    MAXTRIES=5
    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 are dead. rpower \$ME boot to play again."
                echo "Possible problems:
1. This initrd wasn't craeted 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 initfs?"
                shell
                exit
            fi
            echo -e "\${RED}Could not mount \$SERVER:\$ROOTDIR on \$NEWROOT \$RESET"
            RS=`expr \$RANDOM % 30`
            echo -e "Trying again in \$RS seconds"
            sleep \$RS
        done
    elif [ "\$NFS" = "1" ]; then
        echo -e "\${RED}The \"imgurl=\" value should not be nfs-type if statelite mode is enabled \$RESET"
        shell
        exit
    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;
            modprobe nfs
            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} Couldnot find rootimg-statelite.gz for statelite on top of ramdisk \$RESET"
            shell
            exit
        fi

    fi
    # now we need to mount the rest of the system.
    if [ ! -e "\$NEWROOT/\$RWDIR" ]; then
        echo ""
        echo -e "\${RED}Hmmm... this NFS root directories doesn't have a /\$RWDIR directory for me to mount a rw filesystem. You'd better to create it... \${NORMAL}"
        echo ""
        shell
        exit
    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 run liteimg for the current osimage"
        echo ""
        shell
        exit
    done

    mount -t tmpfs rw -o mode=$permission \$NEWROOT/\$RWDIR
    mkdir -p \$NEWROOT/\$RWDIR/tmpfs

    # 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,rsize=32768; 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}"
            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,rsize=32768; 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

    # have to preserve the initial DHCP request.
    if [ ! -d \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhclient ]; then
        mkdir -p \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhclient
    fi

    if [ ! -d \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhcp ]; then
        mkdir -p \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhcp
    fi

    cp -fp /var/lib/dhclient/dhclient.leases \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhclient/dhclient-\$IFACE.leases
    cp -fp /var/lib/dhclient/dhclient.leases \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhcp/dhclient-\$IFACE.leases

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

    while [ ! -e \$NEWROOT/etc/init.d/statelite ]; do
        echo -e "\${RED} \$NEWROOT/etc/init.d/statelite doesn't exist in the osimge! \${NORMAL}"
        shell
    done

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

    # 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
    mount -n --bind /dev/ \$NEWROOT/dev

    umount /sys
    umount /proc

    if ! exec /sbin/switch_root -c /dev/console \$NEWROOT /sbin/init; then
        echo ""
        echo -e "\${RED}Couldn't switch_root. Something must be wrong with the root image.\${RESET}"
        shell
    fi

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 \$NEWROOT
  mkdir -p \$NEWROOT/ro
  mkdir -p \$NEWROOT/rw
  mount --move /ro \$NEWROOT/ro
  mount --move /rw \$NEWROOT/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 \$NEWROOT\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 --selinux -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 --selinux -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 5\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, -m squashfs, or -m nfs?
* If using -m squashfs did you include aufs.ko with geninitrd?
  e.g.:  -n tg3,squashfs,aufs,loop
* If using -m nfs did you export NFS and sync rootimg?  And
  did you include the aufs and nfs modules in the proper order:
  e.g.:  -n tg3,aufs,loop,sunrpc,lockd,nfs_acl,nfs

"
  sleep 5
EOMS
    print $inifile "  exit\n";
    print $inifile "fi\n";
    print $inifile "cd /\n";
    print $inifile "cp /var/lib/dhclient/dhclient.leases \$NEWROOT/dev/.dhclient-\$IFACE.leases\n";
    print $inifile "cp /var/lib/dhclient/dhclient.leases \$NEWROOT/var/lib/dhclient/dhclient-\$IFACE.leases\n";
    print $inifile 'if [ -z "$SNAPSHOTSERVER" ]; then cp /etc/resolv.conf $NEWROOT/etc/resolv.conf; fi' . "\n";
    print $inifile "mknod \$NEWROOT/dev/console c 5 1\n";
    print $inifile "exec switch_root -c /dev/console \$NEWROOT /sbin/init\n";
    close($inifile);

    open($inifile, ">" . "/tmp/xcatinitrd.$$/bin/netstart");
    print $inifile "#!/sbin/nash\n";
    close($inifile);

    #/tmp/updateflag: a script to feedback node provision status to xcatd
    system("mkdir -p /tmp/xcatinitrd.$$/tmp/");
    open($inifile, ">", "/tmp/xcatinitrd.$$/tmp/updateflag");

    print $inifile <<EOMS;
#!/bin/sh
if [ \$# -eq 3 ]; then
   echo \$3 > /tmp/ncarg
   nc  \$1 \$2 -w 60 -e /tmp/updateflag
else
   retrytimes=0
   cmd=""
   while [ "\$cmd" != "done" ]; do
         retrytimes=`expr \$retrytimes + 1`
         if [ \$retrytimes -eq 60 ]; then
            break;
         fi
         read -t 60 cmd
         if [ "\$cmd" == "ready" ]; then
             head -n 1 /tmp/ncarg
             rm -rf /tmp/ncarg
         fi
   done

fi
EOMS
    close($inifile);

    chmod(0755, "/tmp/xcatinitrd.$$/init");
    chmod(0755, "/tmp/xcatinitrd.$$/bin/netstart");
    chmod(0755, "/tmp/xcatinitrd.$$/tmp/updateflag");
    @filestoadd = ();
    foreach (@ndrivers) {
        if (-f "$customdir/$_") {
            push @filestoadd, [ $_, "lib/$_" ];
        } elsif (-f "$pathtofiles/$_") {
            push @filestoadd, [ $_, "lib/$_" ];
        }
    }

    # add rsync for statelite
    foreach ("bin/cpio", "sbin/nash", "sbin/busybox.anaconda", "sbin/rmmod", "bin/bash", "usr/sbin/chroot", "sbin/mount.nfs", "usr/bin/rsync", "usr/bin/wc", "usr/bin/xz", "usr/bin/gzip", "usr/bin/tar") {
        getlibs($_);
        push @filestoadd, $_;
    }

    # Additional binaries needed for udev on s390x
    if ($arch eq "s390x") {
        foreach ("sbin/udevsettle", "sbin/udevtrigger", "sbin/udevd", "sbin/depmod") {
            getlibs($_);
            push @filestoadd, $_;
        }
    }

    if ($arch =~ /x86_64/) {
        push @filestoadd, "lib64/libnss_dns.so.2";
        push @filestoadd, "lib64/libresolv.so.2";
    } else {
        push @filestoadd, "lib/libnss_dns.so.2";
        push @filestoadd, "lib/libresolv.so.2";
    }
    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 udev and network scripts into initrd for s390x, which also works for other platforms
    # udev
    system("mkdir -p /tmp/xcatinitrd.$$/etc/udev");
    system("cp -r $rootimg_dir/etc/udev/* /tmp/xcatinitrd.$$/etc/udev");
    system("mkdir -p /tmp/xcatinitrd.$$/lib/udev");
    system("cp -r $rootimg_dir/lib/udev/* /tmp/xcatinitrd.$$/lib/udev");
    system("mkdir -p /tmp/xcatinitrd.$$/proc/self");
    system("cp -r /proc/self/oom_adj /tmp/xcatinitrd.$$/proc/self");

    # Network related scripts
    system("mkdir -p /tmp/xcatinitrd.$$/etc/sysconfig");
    system("cp -r $rootimg_dir/etc/sysconfig/* /tmp/xcatinitrd.$$/etc/sysconfig");
    system("mkdir -p /tmp/xcatinitrd.$$/sbin");
    system("cp -r $rootimg_dir/sbin/* /tmp/xcatinitrd.$$/sbin");
    system("mkdir -p /tmp/xcatinitrd.$$/lib/modules/$kernelver");
    system("cp -r $rootimg_dir/lib/modules/$kernelver/modules.dep /tmp/xcatinitrd.$$/lib/modules/$kernelver/modules.dep");
    system("mkdir -p /tmp/xcatinitrd.$$/etc/init.d");
    system("cp -r $rootimg_dir/etc/init.d/* /tmp/xcatinitrd.$$/etc/init.d");
    system("mkdir -p /tmp/xcatinitrd.$$/lib64");
    system("cp -r $rootimg_dir/lib64/* /tmp/xcatinitrd.$$/lib64");
    system("mkdir -p /tmp/xcatinitrd.$$/var/run/netreport");

    #copy("$rootimg_dir/lib/modules/*d","/tmp/xcatinitrd.$$/$_");
    system("cd /tmp/xcatinitrd.$$;find .|cpio -H newc -o|gzip -9 -c - > $destdir/initrd-$mode.gz");
    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 {
    generic_post();

    # TODO: workaround for kdump on RHEL6
    # add one fake command: fsck.nfs
    unless (-x "$rootimg_dir/sbin/fsck.nfs") {
        system("echo true > $rootimg_dir/sbin/fsck.nfs; chmod a+x $rootimg_dir/sbin/fsck.nfs");
    }


    if (!-d "$rootimg_dir/opt/xcat/") {
        mkdir "$rootimg_dir/opt/xcat/";
    }
    copy("$installroot/postscripts/xcatdsklspost", "$rootimg_dir/opt/xcat/");
    chmod '0755', "$rootimg_dir/opt/xcat/xcatdsklspost";
}


sub using_systemd {
    my $os = shift;
    if ($os =~ /fedora(\d+)/) {
        if ($1 >= 15) {
            return 1;
        }
    } elsif ($os =~ /rhels(\d+)/) {
        if ($1 >= 7) {
            return 1;
        }
    } elsif ($os =~ /centos(\d+)/) {
        if ($1 >= 7) {
            return 1;
        }
    } elsif ($os =~ /rhelhpc(\d+)/) {
        if ($1 >= 7) {
            return 1;
        }
    }

    return 0;
}


sub generic_post { #This function is meant to leave the image in a state approximating a normal install
    my $cfgfile;
    unlink("$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 $cfgfile "sysfs   /sys     sysfs    defaults       0 0\n";
    if (!&using_systemd($osver)) {
        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, ">", "$rootimg_dir/etc/sysconfig/network-scripts/ifcfg-$prinic");
        print $cfgfile "ONBOOT=no\nBOOTPROTO=dhcp\nDEVICE=$prinic\n";
        close($cfgfile);
    }
    foreach (split /,/, $othernics) {
        if (/^$/) { next; }
        open($cfgfile, ">", "$rootimg_dir/etc/sysconfig/network-scripts/ifcfg-$_");
        print $cfgfile "ONBOOT=yes\nBOOTPROTO=dhcp\nDEVICE=$_\n";
        close($cfgfile);
    }

    # securetty not needed on s390x
    if ($arch ne "s390x") {
        open($cfgfile, ">>", "$rootimg_dir/etc/securetty");
        print $cfgfile "ttyS0\n";
        print $cfgfile "ttyS1\n";
        close($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 (<$rootimg_dir/etc/skel/.*>) {
        if (basename($_) eq '.' or basename($_) eq '..') {
            next;
        }
        copy $_, "$rootimg_dir/root/";
    }
    unless (-r <$rootimg_dir/etc/rc3.d/S??network>) {
        symlink "/etc/init.d/network", "$rootimg_dir/etc/rc3.d/S10network";
    }

    # gettyset is not found on s390x
    if ($arch ne "s390x") {
        if (!&using_systemd($osver)) {
            open($cfgfile, ">", "$rootimg_dir/etc/init.d/gettyset");
            print $cfgfile "#!/bin/bash\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 "     if [ -x /sbin/initctl ]; then\n"; # Upstart style
             # The syntax of next line is not correct, that means it does NOthing. (rh6 and higher)
             # And it should NOT work for rh6 and higher, otherwise it will cauase multiple agetty for ttySx
            print $cfgfile "        initctl emit --no-wait fedora.serial-console-available \$COTTY \$COSPEED\n";
            print $cfgfile "     else\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 "  fi\n";
            print $cfgfile "done\n";

            close($cfgfile);

            chmod(0755, "$rootimg_dir/etc/init.d/gettyset");
            system("cd $rootimg_dir/etc/rc3.d; ln -sf ../init.d/gettyset S60gettyset");
        }

        if(-e "$rootimg_dir/etc/systemd/system/multi-user.target.wants/xcatpostinit1.service"){
            unlink("$rootimg_dir/etc/systemd/system/multi-user.target.wants/xcatpostinit1.service");
        }
        if(-e "$rootimg_dir/etc/rc3.d/S61xcatpostinit"){
            unlink("$rootimg_dir/etc/rc3.d/S61xcatpostinit");
        }

        if (!-d "$rootimg_dir/opt/xcat/") {
            mkdir "$rootimg_dir/opt/xcat/";
        }

        if(-e "$rootimg_dir/usr/lib/systemd/"){
            #if systemd is the service management framework for the diskless image
            #enable the xcatpostinit1.service
            copy("/install/postscripts/xcatpostinit1.netboot","$rootimg_dir/opt/xcat/xcatpostinit1");
            chmod(0755,"$rootimg_dir/opt/xcat/xcatpostinit1");
            copy("/install/postscripts/xcatpostinit1.service","$rootimg_dir/etc/systemd/system/xcatpostinit1.service");
            symlink("../xcatpostinit1.service","$rootimg_dir/etc/systemd/system/multi-user.target.wants/xcatpostinit1.service");
       }else{
            #for traditional sysvinit
            copy("$installroot/postscripts/xcatpostinit1.netboot", "$rootimg_dir/etc/init.d/xcatpostinit");
            chmod(0755, "$rootimg_dir/etc/init.d/xcatpostinit");
            system("cd $rootimg_dir/etc/rc3.d; ln -sf ../init.d/xcatpostinit S61xcatpostinit");
       }

    }
}


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 for initrd hack
    my $dd_dir = mkdtemp("/tmp/ddtmpXXXXXXX");
    mkpath "$dd_dir/mnt";
    mkpath "$dd_dir/mods";

    my @dd_drivers = ();    #driver name

    # Loading drivers from each Driver Disk
    foreach my $dd (@dd_list) {
        my $rc = system("mount -o loop $dd $dd_dir/mnt");
        if ($rc) {
            print "mount the Driver Disk $dd failed.\n";
            next;
        }

        if (!(-f "$dd_dir/mnt/rhdd" || -f "$dd_dir/mnt/modinfo"
                || -f "$dd_dir/mnt/modules.dep" || -f "$dd_dir/mnt/modules.cgz")) {
            print "The Driver Disk $dd has not correct format.\n";
            system("umount -f $dd_dir/mnt");
            next;
        }

        # Load the modinfo
        open($modinfo, "<", "$dd_dir/mnt/modinfo");
        my @modinfo_lines = <$modinfo>;
        my $mod_ver       = shift @modinfo_lines;
        chomp($mod_ver);
        if ($mod_ver !~ /^Version 0/) {
            print "The Driver Disk $dd has unknown version.\n";
            system("umount -f $dd_dir/mnt");
            next;
        }

        foreach my $line (@modinfo_lines) {
            if ($line !~ /^Version/ && $line =~ /^(\w+)/) {
                chomp($line);
                if ($line =~ /^\s*$/) { next; }
                $line =~ s/$/\.ko/;
                push @dd_drivers, $line;
            }
        }
        close($modinfo);

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

        # Load the modules.cgz
        system("cd $dd_dir/mods; gunzip -c $dd_dir/mnt/modules.cgz |cpio -id");
        if (!-d "$rootimg_dir/lib/modules/$kernelver/kernel/drivers/driverdisk") {
            mkpath "$rootimg_dir/lib/modules/$kernelver/kernel/drivers/driverdisk";
        }

        # Copy the drivers to the root image
        my @drivers = `find $dd_dir/mods/$kernelver/$arch/ -type f`;

        foreach my $d (@drivers) {
            chomp($d);
            $driver_name = $d;
            $driver_name =~ s/.*\///;
            $real_path = "";
            find(\&get_path, <$rootimg_dir/lib/modules/$kernelver/*>);
            if ($real_path eq "") {
                system("cp $d $rootimg_dir/lib/modules/$kernelver/kernel/drivers/driverdisk");
            } else {
                system("cp $d $real_path");
            }
        }

        rmtree "$dd_dir/mods/*";

        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") {
            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 use_devnull {
    if (-e "$rootimg_dir/dev/null" and !-c "$rootimg_dir/dev/null") {
        system("rm -f $rootimg_dir/dev/null");
    }
    if (!-e "$rootimg_dir/dev/null") {
        system("mknod $rootimg_dir/dev/null c 1 3");
    }
}

#in rhels7.5, the /dev/urandom does not exist in rootimg directory
#which cause any rpm command fail with `error: Failed to initialize NSS library`
#create urandom in genimage to avoid the error
sub use_devurandom {
    if (-e "$rootimg_dir/dev/urandom" and !-c "$rootimg_dir/dev/urandom") {
        system("rm -f $rootimg_dir/dev/urandom");
    }
    if (!-e "$rootimg_dir/dev/urandom") {
        system("mknod -m444 $rootimg_dir/dev/urandom c 1 9");
    }
}

# Hack uname functions to match what's installed in the rootimg
# instead of what's running on the management node.
# Needed for some RPMs, especially kernel modules via DKMS.
# Make sure to restore the original uname with unuse_hackuname()
sub use_hackuname {
    my $arch = shift;
    my $kernelver = shift;

    unless (-e "$rootimg_dir/bin/uname-binary") {
        if (-e -x "$rootimg_dir/bin/uname") {
            move("$rootimg_dir/bin/uname", "$rootimg_dir/bin/uname-binary");
        }
    }

    my $unamefile;
    open($unamefile, ">", "$rootimg_dir/bin/uname");
    print $unamefile <<UNAME_FILE;
#!/bin/bash

ARCH=$arch
KERNELVER=$kernelver

case "\$1" in
"-m")
    if [ -z "\$ARCH" ]; then
      ARCH=\"\$(dpkg --print-architecture 2>/dev/null || rpm -q kernel-\$(\"\$0\" -r) --qf '%{arch}' 2>/dev/null)\"
    fi
    case "\$ARCH" in
        "amd64") ARCH="x86_64" ;;
        "ppc64el") ARCH="ppc64le" ;;
        esac
    echo "\$ARCH" ;;
"-r")
    if [ -n "\$KERNELVER" ]; then
        echo \$KERNELVER
    else
      for d in \$(ls /lib/modules | sort -V) ; do : ; done && echo \$d
    fi
    ;;
"-s"|"")
    echo "Linux";;
*)
    /bin/uname-binary \$1;;
    esac
    exit 0

UNAME_FILE
    close $unamefile;
    chmod(0755, "$rootimg_dir/bin/uname");
}

sub unuse_hackuname {
    if (-e "$rootimg_dir/bin/uname") {
        system("rm -fr $rootimg_dir/bin/uname");
    }
    if (-e -x "$rootimg_dir/bin/uname-binary") {
        move("$rootimg_dir/bin/uname-binary", "$rootimg_dir/bin/uname");
    }
}


sub usage {
    print 'Usage: genimage [ -i <nodebootif> ] [ -n <nodenetdrivers> ] [-r <otherifaces>] -o <osver> -p <profile> -k <kernelver> [--permission <permission>] [--interactive]' . "\n";
    print "       --permission only works with statelite mode\n";
    print "Examples:\n";
    print " genimage -i eth0 -n tg3 -o centos5.1 -p compute \n";
    print " genimage -i eth0 -r eth1,eth2 -n tg3,bnx2 -o centos5.1 -p compute --interactive\n";
    print " genimage -i eth0 -n igb,e1000e,e1000,bnx2,tg3 -o centos5.4 -p nfsroot\n";
    print " genimage -i eth0 -n igb,e1000e,e1000,bnx2,tg3 -o centos5.4 -p nfsroot --permission 777\n";

    return 0;
}


