#!/usr/bin/perl
#                              -*- Mode: Cperl -*-
# debian.postinst ---
# Author           : Manoj Srivastava ( srivasta@pilgrim.umass.edu )
# Created On       : Sat Apr 27 05:42:43 1996
# Created On Node  : melkor.pilgrim.umass.edu
# Last Modified By : Manoj Srivastava
# Last Modified On : Mon Apr 13 14:24:56 2009
# Last Machine Used: anzu.internal.golden-gryphon.com
# Update Count     : 44
# Status           : Unknown, Use with caution!
# HISTORY          :
# Description      :
#
#
#
#  arch-tag: ae5907e4-2617-4db5-964a-1b5f45bedc1a
#

$| = 1;

# Predefined values:
my $package = "=P";
my $version = "=V";

my $kernel_pkg_version = "=KPV";

# Ignore all invocations uxcept when called on to configure.
exit 0 unless ( $ARGV[0] && $ARGV[0] =~ /configure/ );

my $architecture;
chomp( $architecture = `dpkg --print-architecture` );
$architecture = "ppc"    if $architecture eq "powerpc";
$architecture = "parisc" if $architecture eq "hppa";
$architecture = "mips"   if $architecture eq "mipsel";
$architecture = "x86_64" if $architecture eq "amd64";

my $stop_and_read     = 0;
my $have_conffile     = "";
my $src_postinst_hook = '';
my $CONF_LOC          = '/etc/kernel-img.conf';

# most of our work is done in /usr/src.
chdir '/usr/src' or die "Could not chdir to /usr/src:$!";

if ( -r "$CONF_LOC" && -f "$CONF_LOC" ) {
  if ( open( CONF, "$CONF_LOC" ) ) {
    while (<CONF>) {
      chomp;
      s/\#.*$//g;
      next if /^\s*$/;

      $src_preinst_hook  = "$1" if m/^\s*src_preinst_hook\s*=\s*(\S+)/i;
      $src_postinst_hook = "$1" if m/^\s*src_postinst_hook\s*=\s*(\S+)/i;
      $src_prerm_hook    = "$1" if m/^\s*src_prerm_hook\s*=\s*(\S+)/i;
      $src_postinst_hook = "$1" if m/^\s*src_postinst_hook\s*=\s*(\S+)/i;
    } ## end while (<CONF>)
    close CONF;
    $have_conffile = "Yes";
  } ## end if ( open( CONF, "$CONF_LOC"...))
} ## end if ( -r "$CONF_LOC" &&...)

sub exec_script {
  my $type   = shift;
  my $script = shift;
  print STDERR "Running $type hook script $script.\n";
  system("$script $version $realimageloc$kimage-$version")
    && print STDERR "User $type hook script [$script] ";
  if ($?) {
    if ( $? == -1 ) {
      print STDERR "failed to execute: $!\n";
    }
    elsif ( $? & 127 ) {
      printf STDERR "died with signal %d, %s coredump\n",
        ( $? & 127 ), ( $? & 128 ) ? 'with' : 'without';
    }
    else {
      printf STDERR "exited with value %d\n", $? >> 8;
    }
    exit $? >> 8;
  } ## end if ($?)
} ## end sub exec_script

sub run_hook {
  my $type   = shift;
  my $script = shift;
  if ( $script =~ m,^/, ) {

    # Full path provided for the hook script
    if ( -x "$script" ) {
      &exec_script( $type, $script );
    }
    else {
      die "The provided $type hook script [$script] could not be run.\n";
    }
  } ## end if ( $script =~ m,^/, )
  else {
    # Look for it in a safe path
    for my $path ( '/bin', '/sbin', '/usr/bin', '/usr/sbin' ) {
      if ( -x "$path/$script" ) {
        &exec_script( $type, "$path/$script" );
        return 0;
      }
    } ## end for my $path ( '/bin', ...)

    # No luck
    print STDERR "Could not find $type hook script [$script].\n";
    die "Looked in: '/bin', '/sbin', '/usr/bin', '/usr/sbin'\n";
  } ## end else [ if ( $script =~ m,^/, )]
} ## end sub run_hook

# Set up the env variable containing our arguments
my $out;
for (@ARGV) {
  s,','\\'',g;
  $out .= " '$_'";
}
$ENV{'DEB_MAINT_PARAMS'}       = "$out";
$ENV{'KERNEL_PACKAGE_VERSION'} = "$kernel_pkg_version";

## Run user hook script here, if any
if ( -d "/etc/kernel/src_postinst.d" ) {
  print STDERR "Examining /etc/kernel/src_postinst.d.\n";
  system( "run-parts --verbose --exit-on-error --arg=$version "
      . "--arg=$realimageloc$kimage-$version "
      . "/etc/kernel/src_postinst.d" )
    && die "Failed to process /etc/kernel/src_postinst.d";
} ## end if ( -d "/etc/kernel/src_postinst.d")

if ( -d "/etc/kernel/src_postinst.d/$version" ) {
  print STDERR "Examining /etc/kernel/src_postinst.d/$version.\n";
  system( "run-parts --verbose --exit-on-error --arg=$version "
      . "--arg=$realimageloc$kimage-$version "
      . "/etc/kernel/src_postinst.d/$version" )
    && die "Failed to process /etc/kernel/src_postinst.d/$version";
} ## end if ( -d "/etc/kernel/src_postinst.d/$version")

if ( -x "$src_postinst_hook" ) {
  &run_hook( "postinst", $src_postinst_hook );
}

exit 0;

__END__
