xcat-core/xCAT-server/share/xcat/netboot/rh/genimage

#!/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;
use File::Find;
use Getopt::Long;
use Cwd qw(realpath);
#use strict;
Getopt::Long::Configure("bundling");
Getopt::Long::Configure("pass_through");

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 $onlyinitrd=0;
if ($name =~ /geninitrd/) {
   $onlyinitrd=1;
}
my $rootlimit;
my $tmplimit;
my $installroot = "/install";
my $kernelver = ""; #`uname -r`;
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 $rwfiles;   # these files are used by statelite for tmpfs rw
my $mode;
my $permission; # the permission works only for statelite mode currently


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

$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,
   'm=s' => \$mode,
   'permission=s' => \$permission
);
if (@ARGV > 0) {
    $imagename=$ARGV[0];
    if ($arch or $osver or $profile) {
	print "-o, -p and -a options are not allowed when a image name is specified.\n";
        exit 1;
    }
    #load the module in memory
    eval {require("$::XCATROOT/lib/perl/xCAT/Table.pm")};
    if ($@) {
	print $@;
	exit 1;
    }
   
    #get the info from the osimage and linux 
    my $osimagetab=xCAT::Table->new('osimage', -create=>1);
    if (!$osimagetab) {
	print "The osimage table cannot be opened.\n";
	exit 1;
    }
    my $linuximagetab=xCAT::Table->new('linuximage', -create=>1);
    if (!$linuximagetab) {
	print "The linuximage table cannot be opened.\n";
	exit 1;
    }
    (my $ref) = $osimagetab->getAttribs({imagename => $imagename}, 'osvers', 'osarch', 'profile', 'provmethod');
    if (!$ref) {
	print "Cannot find image \'$imagename\' from the osimage table.\n";
	exit 1;
    }
    (my $ref1) = $linuximagetab->getAttribs({imagename => $imagename}, 'pkglist', 'pkgdir', 'otherpkglist', 'otherpkgdir', 'postinstall', 'rootimgdir');
    if (!$ref1) {
	print "Cannot find $imagename from the linuximage table\n";
	exit 1;
    }

    $osver=$ref->{'osvers'};
    $arch=$ref->{'osarch'};
    $profile=$ref->{'profile'};
    my $provmethod=$ref->{'provmethod'};
    
    unless ($osver and $arch and $profile and $provmethod) {
	print"osimage.osvers, osimage.osarch, osimage.profile and osimage.provmethod must be specified for the image $imagename in the database.\n";
	exit 1;
    }

    if ($provmethod ne 'netboot') {
	print "\'$imagename\' cannot be used to build diskless image. Make sure osimage.provmethod is 'netboot'.";
	exit 1;
    }

    if (! $ref1->{'pkglist'}) {
	print"A .pkglist file must be specified for image \'$imagename\' in the linuximage table.\n";
        exit 0;
    }
    $pkglist =$ref1->{'pkglist'};

    $srcdir=$ref1->{'pkgdir'};
    $srcdir_otherpkgs=$ref1->{'otherpkgdir'};
    $otherpkglist=$ref1->{'otherpkglist'};
    $postinstall_filename=$ref1->{'postinstall'};
    $destdir=$ref1->{'rootimgdir'};
}

if ($mode eq "statelite") {
    if (!$permission) {
        $permission = "755";
    }
}

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

if (!$srcdir) { 
    $srcdir="$installroot/$osver/$arch";
}

if (!$srcdir_otherpkgs) { 
    $srcdir_otherpkgs = "$installroot/post/otherpkgs/$osver/$arch";
}

if (!$destdir)
{
    $destdir="$installroot/netboot/$osver/$arch/$profile";
}
$rootimg_dir="$destdir/rootimg";


unless ($osver and $profile and $netdriver and $prinic) {
   print 'Usage: genimage -i <nodebootif> -n <nodenetdrivers> [-r <otherifaces>] -o <OSVER> -p <PROFILE> -k <KERNELVER> [-m <mode> [--permission <permission>]]'."\n";
   print '       genimage -i <nodebootif> -n <nodenetdrivers> [-r <otherifaces>] -k <KERNELVER> <imagename>'."\n";
   print "       --permission only works when '-m statelite' is set\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\n";
   print " genimage -i eth0 -n igb,e1000e,e1000,bnx2,tg3 -o centos5.4 -p nfsroot -m statelite\n";
   print " genimage -i eth0 -n igb,e1000e,e1000,bnx2,tg3 -o centos5.4 -p nfsroot -m statelite --permission 777\n";
   print " genimage -i eth0 -n tg3 myimage\n";
   exit 1;
}

my @ndrivers;
foreach (split /,/,$netdriver) {
   unless (/\.ko$/) {
      s/$/.ko/;
   }
   if (/^$/) {
      next;
   }
   push @ndrivers,$_;
}
if($mode eq "statelite"){
	push @ndrivers,"fscache.ko";
	push @ndrivers,"sunrpc.ko";
	push @ndrivers,"lockd.ko";
	push @ndrivers,"nfs_acl.ko";
	push @ndrivers,"nfs.ko";

}


unless ($onlyinitrd) {
   @yumdirs=();
   find(\&isyumdir, <$installroot/$osver/$arch/>);
   unless (scalar(@yumdirs)) {
   #unless ( -d $srcdir."/repodata" ) {
      print "Need $installroot/$osver/$arch/ available from a system that has ran copycds on $osver $arch\n";
      exit 1;
   }

   my $yumconfig;
   open($yumconfig,">","/tmp/genimage.$$.yum.conf");
   my $repnum=0;
   foreach $srcdir (@yumdirs) {
      print $yumconfig "[$osver-$arch-$repnum]\nname=$osver-$arch-$repnum\nbaseurl=file://$srcdir\ngpgpcheck=0\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 $yumcmd = "yum -y -c /tmp/genimage.$$.yum.conf --installroot=$rootimg_dir/ --disablerepo=* ";
   foreach (0..$repnum) {
      $yumcmd .= "--enablerepo=$osver-$arch-$_ ";
   }
   
   $yumcmd .= "install ";
   mkpath("$rootimg_dir/var/lib/yum");

   if (!$imagename) {
       $pkglist= get_profile_def_filename($customdir, "pkglist");
       if (!$pkglist) {
	   $pkglist= get_profile_def_filename($pathtofiles, "pkglist");
       }  
   }

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

   my %pkg_hash=get_package_names($pkglist);
   my $index=1;
   my $pass;
   foreach $pass (keys(%pkg_hash)) {
       my $pkgnames = "";
       foreach (keys(%{$pkg_hash{$pass}})) {
           if (($_ eq "PRE_REMOVE") || ($_ eq "POST_REMOVE")) { next;} 
           my $pa=$pkg_hash{$pass}{$_};
           $pkgnames .= " " . join(' ', @$pa);
       }

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

   #Now let's handle extra packages
    if (!$imagename) {
	$otherpkglist=get_profile_def_filename($customdir, "otherpkgs.pkglist");
	if (!$otherpkglist) { $otherpkglist=get_profile_def_filename($pathtofiles, "otherpkgs.pkglist"); }
    }
    my %extra_hash=();
    if ($otherpkglist) {
       %extra_hash=get_package_names($otherpkglist);
    }
    my %extrapkgnames; 

    if (keys(%extra_hash) > 0) {
      open($yumconfig,">>","/tmp/genimage.$$.yum.conf");
      my $index=1;
      foreach $pass (keys(%extra_hash)) {
        foreach (keys(%{$extra_hash{$pass}})) {
	  if (($_ eq "PRE_REMOVE") || ($_ eq "POST_REMOVE")) { next;} 
	  print $yumconfig "[otherpkgs$index]\nname=otherpkgs$index\nbaseurl=file://$srcdir_otherpkgs/$_\ngpgpcheck=0\n\n";
	  $index++;
	  my $pa=$extra_hash{$pass}{$_};
	  $extrapkgnames{$pass} .= " " . join(' ', @$pa);
        }
      }
      close($yumconfig);
      $index--;
      $yumcmd = "yum -y -c /tmp/genimage.$$.yum.conf --installroot=$rootimg_dir/ --disablerepo=* ";
      foreach (0..$repnum) {
	  $yumcmd .= "--enablerepo=$osver-$arch-$_ ";
      }
      for (1..$index) {
	  $yumcmd .= "--enablerepo=otherpkgs$_ ";
      } 

      foreach $pass (keys(%extra_hash)) {
      #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 ($rm_packges) {
                  print "$yumcmd_remove $rm_packges\n";
	          $rc = system("$yumcmd_remove $rm_packges");
	      }
          }


      #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";
      
          my $rc = system($yumcmd);
          if ($rc) { 
	      print "yum invocation failed\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 ($rm_packges) {
                  print "$yumcmd_remove $rm_packges\n";
	          $rc = system("$yumcmd_remove $rm_packges");
	      }
          }
      }
   }

   # run yum update to update any installed rpms
   # needed when running genimage again after updating software in repositories
   my $yumcmd_update = $yumcmd_base . " update  ";
   $rc = system("$yumcmd_update");
   # ignore any return code


   postscripts(); #run 'postscripts'
}
#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
my @KVERS= <$rootimg_dir/boot/vmlinuz-*>;
foreach (@KVERS) {
	s/vmlinuz-//;
}
unless (scalar(@KVERS)) {
	@KVERS= <$rootimg_dir/lib/modules/*>;
}
if (scalar(@KVERS)) {
    $basekernelver = basename(pop @KVERS);
}
unless ($basekernelver) {
    $basekernelver = `uname -r`;
}
unless ($kernelver) {
    $kernelver=$basekernelver;
}
chomp($kernelver);
open($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 $dep } @ndrivers) { #only add if not added
                unshift (@checkdeps,$dep); #recursively check dependencies
                unshift (@ndrivers,$dep);
                print "Added $dep as an autodetected depedency\n";
            }
        }
    }
}
close($moddeps);
unlink "/tmp/genimage.$$.yum.conf";

#-- run postinstall script
if (!$imagename) {
    $postinstall_filename= get_profile_def_filename($customdir, "postinstall");
    if (!$postinstall_filename) {
	$postinstall_filename= get_profile_def_filename($pathtofiles, "postinstall");
    }
} 

if (($postinstall_filename) && (-x $postinstall_filename)) {
    my $rc = system($postinstall_filename, $rootimg_dir,$osver,$arch,$profile);
    if($rc) {
        print "postinstall script failed\n";
        exit 1;
    }
}


# statelite .statelite directory added here.
# this is where tmpfs will be created.
if($mode eq "statelite"){
	mkpath "$rootimg_dir/.statelite";  # create place for NFS mounts.	
	# this script will get the directories.	
	unless(-f "../add-on/statelite/rc.statelite"){
		print "Can't find ../add-on/statelite/rc.statelite!\n";
		exit;
	}
	system("cp ../add-on/statelite/rc.statelite $rootimg_dir/etc/init.d/statelite");
	# also need to add this file:
	# may have already been made into a symbolic link, if so ignore it

	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");
	}
}   



mkinitrd();

sub getlibs {
	my $file = shift;
	my $liblist = `chroot $rootimg_dir ldd $file`;
	my @libs = split/\n/,$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 {
	mkpath("/tmp/xcatinitrd.$$/bin");
	if($basekernelver eq $kernelver) {
		copy(<$rootimg_dir/boot/vmlinuz*>,"$destdir/kernel");
	}
	else {
		if(-r "$rootimg_dir/boot/vmlinuz-$kernelver") {
			copy("$rootimg_dir/boot/vmlinuz-$kernelver","$destdir/kernel");
        } elsif(-r "/boot/vmlinuz-$kernelver") {
			copy("/boot/vmlinuz-$kernelver","$destdir/kernel");
		}
		else {
			xdie("Cannot read /boot/vmlinuz-$kernelver");
		}
	}
	symlink("bin","/tmp/xcatinitrd.$$/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 stolen from redhat
shell() {
        echo ''
        echo -e "\$YELLOW Entering rescue/debug init shell."
        echo -e " Exit shell to continue booting.\$RESET"
        \$SHELL
}
mountfile () {
    snapshotfile=\${NEWROOT}/\${RWDIR}/\${2}\${1}
    dir=`dirname \$snapshotfile`
#
#  Check if file already exists in snapshot directory.  If not attempt to copy
#    from root directory to snapshot directory.
#
    if [ ! -e \$snapshotfile ]; then
        mkdir -p \$dir || echo -e "\${RED}Can't make \$dir\${NORMAL}"
        #echo -e "\${YELLOW} \${1} missing from client specific area.\${RESET}"
        if [ -e \$NEWROOT/\${1} ] ; then
            #echo "Copying \${1}"
            rsync -a \$NEWROOT/\${1} \$snapshotfile
        else
            #echo "Creating \${1}"
            touch \$snapshotfile
        fi
    fi
#
#  Mount the snapshotfile over the root file so the client will have r/w access
#
    mount -n -o bind \$NEWROOT/\$RWDIR/\${2}\${1} \$NEWROOT/\${1}
}

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";
   }
   print $inifile <<EOMS;
# check and see if debug is specified on command line
grep '\(debug\)' /proc/cmdline > /dev/null && export DEBUG=1
netstart
while ! ifconfig | grep inet; do
    echo -e "\${RED}Failed to acquire address, retrying \${RESET}"
    sleep 1
    netstart
done
ifconfig lo 127.0.0.1
ifconfig lo up
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
        NFS=0
      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
	NFSROOT=1
	VALUE=`echo \$i |awk -F= '{print \$2}'`
	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
done

# show xCAT logo
fancydisplay


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

# NFSROOT code here:
if [ "\$NFSROOT" = "1" ]; then
	echo Setting up Statelite
	# for loop back mounting capability!
	mknod /dev/loop0 b 7 0
	mkdir -p \$NEWROOT
 	MAXTRIES=5
	ITER=0
	ME=`hostname`
	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 wasn't created for statelite node?  rerun genimage with the -m statelite flag, then rerun 'nodeset \$ME statelite'
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

# 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 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,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.  \$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
	fi

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

	# have to preserve the initial DHCP request.  So we link it.

	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-$prinic.leases
	cp -fp /var/lib/dhclient/dhclient.leases \${NEWROOT}/\${RWDIR}/tmpfs/var/lib/dhcp/dhclient-$prinic.leases

	# dhclient
	#while ! mount -n --bind \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhclient/dhclient-$prinic.leases \$NEWROOT/var/lib/dhclient/dhclient-$prinic.leases
	#do
	#	echo "Can't mount /tmpfs/var/lib/dhclient/dhclient-$prinic.leases to /var/lib/dhclient/dhclient-$prinic.leases"
	#	shell
	#done

	# dhcp
	#while ! mount -n --bind \$NEWROOT/\$RWDIR/tmpfs/var/lib/dhcp/dhclient-$prinic.leases \$NEWROOT/var/lib/dhcp/dhclient-$prinic.leases
	#do
	#	echo "Can't mount /tmpfs/var/lib/dhcp/dhclient-$prinic.leases to /var/lib/dhcp/dhclient-$prinic.leases"
	#	shell
	#done

	

	[ -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/ 

	# 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 [ -z \$NEWROOT/etc/init.d/statelite ]
	do
		echo "\$NEWROOT/etc/init.d/statelite does not exist in image!"
		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
	export fastboot=yes
	export READONLY=yes
	grep '\\(shell\\)' /proc/cmdline >/dev/null && shell
	mount -n --bind /dev /sysroot/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 NFS root image.\${RESET}"
	#	mount -t proc proc /proc
		shell
	fi
	exit
fi
# END NFSROOT/Statelite code

# RAM root Hybrid with NFS root
if [ "\$NFS" = "1" ]; then
  echo Setting up nfs with ram overlay.
  mknod /dev/loop0 b 7 0
  mkdir -p /ro
  mkdir -p /rw
  #NOTE: should prob have max count
  while [ ! -d /ro/bin ]; do
    echo mounting \$SERVER:\$ROOTDIR on /ro
    mount.nfs \$SERVER:\$ROOTDIR /ro -r -n -o nolock,rsize=32768,tcp,nfsvers=3,timeo=14
    ST=`expr \$RANDOM % 5`
    sleep \$ST
  done
  mount -t tmpfs rw /rw
  mkdir -p /rw/etc
  mkdir -p /rw/var/lib/dhclient
  cp /etc/resolv.conf /rw/etc/
  cp /var/lib/dhclient/dhclient.leases /rw/var/lib/dhclient/dhclient-$prinic.leases
  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
  cp /etc/resolv.conf /sysroot/etc/
  echo xcatfs / aufs rw,_netdev 0 0 >> /sysroot/etc/fstab
elif [ -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.gz ]; then\n";
   print $inifile "echo Setting up RAM-root tmpfs.\n";
   if ($rootlimit) {
      print $inifile "  mount -o size=$rootlimit -t tmpfs rootfs /sysroot\n";
   } else {
      print $inifile "  mount -t tmpfs rootfs /sysroot\n";
   }
   print $inifile "  cd /sysroot\n";
   print $inifile "  echo -n \"Extracting root filesystem:\"\n";
   print $inifile "  if [ -x /bin/cpio ]; then\n";
   print $inifile "  zcat /rootimg.gz |/bin/cpio -idum\n";
   print $inifile "  else\n";
   print $inifile "  zcat /rootimg.gz |cpio -idum\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, -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 $inifile "cp /var/lib/dhclient/dhclient.leases /sysroot/dev/.dhclient-$prinic.leases\n";
   print $inifile "cp /var/lib/dhclient/dhclient.leases /sysroot/var/lib/dhclient/dhclient-$prinic.leases\n";
   print $inifile "mknod /sysroot/dev/console c 5 1\n";
   print $inifile "exec switch_root -c /dev/console /sysroot /sbin/init\n";
   close($inifile);





   open($inifile,">"."/tmp/xcatinitrd.$$/bin/netstart");
   print $inifile "#!/sbin/nash\n";
   print $inifile "network --device $prinic --bootproto dhcp\n";
   close($inifile);
	chmod(0755,"/tmp/xcatinitrd.$$/init");
	chmod(0755,"/tmp/xcatinitrd.$$/bin/netstart");
   @filestoadd=();
   foreach (@ndrivers) {
      if (-f "$customdir/$_") {
         push @filestoadd,[$_,"lib/$_"];
     } elsif (-f "$pathtofiles/$_") {
         push @filestoadd,[$_,"lib/$_"];
     }
   }
   # add rsync for statelite
   foreach ("bin/cpio","sbin/nash","sbin/busybox.anaconda","sbin/rmmod","sbin/mount.nfs","/usr/bin/rsync") {
      getlibs($_);
      push @filestoadd,$_;
   }
   if ($arch =~ /x86_64/) {
      push @filestoadd,"lib64/libnss_dns.so.2";
      push @filestoadd,"lib64/libresolv.so.2";
   }
   else {
      push @filestoadd,"lib/libnss_dns.so.2";
   }
   push @filestoadd,keys %libhash;
	if($basekernelver ne $kernelver) {
		system("rm -rf $rootimg_dir/lib/modules/$basekernelver");
        unless (-d "$rootimg_dir/lib/modules/$kernelver") {
		    if(-d "/lib/modules/$kernelver") {
		    	system("cd /lib/modules;cp -r $kernelver $rootimg_dir/lib/modules/");
		    }
		    else {
		    	xdie("Cannot read /lib/modules/$kernelver");
		    }
        }
	}
   find(\&isnetdriver, <$rootimg_dir/lib/modules/$kernelver/*>);

   foreach (@filestoadd) {
      if (ref($_)) {
	  #print "$_->[0], $_->[1]\n";
         my $srcpath = "$rootimg_dir/".$_->[0];
         if (-f "$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.$$/".$_->[1];
      } else {
          #print "$_\n";
         my $srcpath = "$rootimg_dir/$_";
         if (-f "$customdir/$_") {
            $srcpath = "$customdir/$_";
         } elsif (-f "$pathtofiles/$_") {
            $srcpath = "$pathtofiles/$_";
         }
         mkpath(dirname("/tmp/xcatinitrd.$$/$_"));
         copy("$srcpath","/tmp/xcatinitrd.$$/$_");
         chmod 0755,"/tmp/xcatinitrd.$$/".$_;
      }
   }

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






sub postscripts { # TODO: customized postscripts
   generic_post();
   if (-d "$installroot/postscripts/hostkeys") {
      for my $key (<$installroot/postscripts/hostkeys/*key>) {
         copy ($key,"$rootimg_dir/etc/ssh/");
      }
      chmod 0600,</$rootimg_dir/etc/ssh/*key>;
   }
   if (-d "/$installroot/postscripts/.ssh") {
      mkpath("/$rootimg_dir/root/.ssh");
      chmod(0700,"/$rootimg_dir/root/.ssh/");
      for my $file (</$installroot/postscripts/.ssh/*>) {
         copy ($file,"/$rootimg_dir/root/.ssh/");
      }
      chmod(0600,</$rootimg_dir/root/.ssh/*>);
   }

}

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 $cfgfile "sysfs   /sys     sysfs    defaults       0 0\n";
   if ($tmplimit) {
      print $cfgfile "tmpfs   /tmp     tmpfs    defaults       0 0\n";
      print $cfgfile "tmpfs   /var/tmp     tmpfs    defaults       0 0\n";
   }
   close($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);
   open($cfgfile,">","$rootimg_dir/etc/sysconfig/network-scripts/ifcfg-$prinic");
   print $cfgfile "ONBOOT=yes\nBOOTPROTO=dhcp\nDEVICE=$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($cfgfile);
   }
   open($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";
   }
   open($cfgfile,">","$rootimg_dir/etc/rc3.d/S60gettyset");
   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
   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 $cfgfile "done\n";
   chmod(0755,"$rootimg_dir/etc/rc3.d/S60gettyset");
   #link("$rootimg_dir/sbin/init","$rootimg_dir/init");
    #add postscript support for redhat
   if($mode eq "statelite") {
        print $cfgfile "/opt/xcat/xcatdsklspost 4\n";
   } else {
        print $cfgfile "/opt/xcat/xcatdsklspost\n";
   }
   close($cfgfile);
   
   copy(<$rootimg_dir/boot/vmlinuz*>,"$destdir/kernel"); } 

sub get_package_names {
   my $plist_file_name=shift;
   my %pkgnames=();
   my @tmp_array=();


   if ($plist_file_name) {
     my $pkgfile;
     open($pkgfile,"<","$plist_file_name");
     while (<$pkgfile>) {
        chomp;
	s/\s+$//;   #remove trailing white spaces
	next if /^\s*$/; #-- skip empty lines
	push(@tmp_array,$_);
     }
     close($pkgfile);

     if ( @tmp_array > 0) {
        my $pkgtext=join(',',@tmp_array);
      
        #handle the #INLCUDE# tag recursively
        my $idir = dirname($plist_file_name);
        my $doneincludes=0;
	while (not $doneincludes) {
	    $doneincludes=1;
	    if ($pkgtext =~ /#INCLUDE:[^#]+#/) {
		$doneincludes=0;
		$pkgtext =~ s/#INCLUDE:([^#]+)#/include_file($1,$idir)/eg;
	    }
	}
     
        #print "pkgtext=$pkgtext\n";
	my @tmp=split(',', $pkgtext);
        my $pass=1;
	foreach (@tmp) {
	    my $idir;
	    if (/^--/) {	
		$idir="POST_REMOVE";   #line starts with -- means the package should be removed after otherpkgs are installed
		s/^--//;
            } elsif  (/^-/) {
		$idir="PRE_REMOVE"; #line starts with single - means the package should be removed before otherpkgs are installed
		s/^-//;
            } elsif  (/^#NEW_INSTALL_LIST#/) {
                $pass++;
                next;
            } elsif  (/^#/) {
                # ignore all other comment lines
                next;
            } else { 
		$idir=dirname($_); 
	    }
	    my $fn=basename($_);
	    if (exists($pkgnames{$pass}{$idir})) {
		my $pa=$pkgnames{$pass}{$idir};
		push(@$pa, $fn);
	    } else {
		$pkgnames{$pass}{$idir}=[$fn];
	    }
	}
     }
   }

   return %pkgnames;
}



sub include_file
{
   my $file = shift;
   my $idir = shift;
   my @text = ();
   unless ($file =~ /^\//) {
       $file = $idir."/".$file;
   }
   
   open(INCLUDE,$file) || \
       return "#INCLUDEBAD:cannot open $file#";
   
   while(<INCLUDE>) {
       chomp($_);
       s/\s+$//;  #remove trailing spaces
       next if /^\s*$/; #-- skip empty lines
       push(@text, $_);
   }
   
   close(INCLUDE);
   
   return join(',', @text);
}



sub get_profile_def_filename {
   my $base=shift;
   my $ext=shift;
   my $dotpos = rindex($osver, ".");
   my $osbase = substr($osver, 0, $dotpos);
   if (-r "$base/$profile.$osver.$arch.$ext") {
      return "$base/$profile.$osver.$arch.$ext";
   } elsif (-r "$base/$profile.$osbase.$arch.$ext") {
      return "$base/$profile.$osbase.$arch.$ext";
   } elsif (-r "$base/$profile.$arch.$ext") {
      return "$base/$profile.$arch.$ext";
   } elsif (-r "$base/$profile.$osver.$ext") {
      return "$base/$profile.$osver.$ext";
   } elsif (-r "$base/$profile.$osbase.$ext") {
      return "$base/$profile.$osbase.$ext";
   } elsif (-r "$base/$profile.$ext") {
      return "$base/$profile.$ext";
   } 

   return "";
}