Rename config to match naming convention.

debian.chrome/control-scripts/postrm

+#! /usr/bin/perl
+#                              -*- Mode: Cperl -*- 
+# image.postrm --- 
+# Author           : Manoj Srivastava ( srivasta@glaurung.green-gryphon.com ) 
+# Created On       : Sat May 15 11:05:13 1999
+# Created On Node  : glaurung.green-gryphon.com
+# Last Modified By : Manoj Srivastava
+# Last Modified On : Wed Sep 13 11:26:19 2006
+# Last Machine Used: glaurung.internal.golden-gryphon.com
+# Update Count     : 57
+# Status           : Unknown, Use with caution!
+# HISTORY          : 
+# Description      : 
+# 
+#     $Id: image.postrm,v 1.31 2003/10/07 16:24:20 srivasta Exp $
+#
+
+
+# 
+#use strict; #for debugging
+use Cwd 'abs_path';
+
+$|=1;
+
+# Predefined values:
+my $version           = "=V";
+my $link_in_boot      = "";     # Should be empty, mostly
+my $no_symlink        = "";     # Should be empty, mostly
+my $reverse_symlink   = "";     # Should be empty, mostly
+my $do_symlink        = "Yes";  # target machine defined
+my $do_boot_enable    = "Yes";  # target machine defined
+my $do_bootfloppy     = "Yes";  # target machine defined
+my $do_bootloader     = "Yes";  # target machine defined
+my $move_image        = '';       # target machine defined
+my $kimage            = "=K";   # Should be empty, mostly
+my $loader            = "=L";     # lilo, silo, quik, palo, vmelilo, or nettrom
+my $image_dir         = "/boot";     # where the image is located
+my $clobber_modules   = '';       # target machine defined
+my $initrd            = "YES";     # initrd kernel
+my $do_initrd         = '';       # Normally, we don't
+my $warn_initrd       = 'YES';    # Normally we do
+my $use_hard_links    = '';       # hardlinks do not work across fs boundaries
+my $postinst_hook     = '';       #Normally we do not
+my $postrm_hook       = '';       #Normally we do not
+my $preinst_hook      = '';       #Normally we do not
+my $prerm_hook        = '';       #Normally we do not
+my $minimal_swap      = '';       # Do not swap symlinks
+my $ignore_depmod_err = '';     # normally we do not
+my $relink_build_link = 'YES';  # There is no harm in checking the link
+my $force_build_link  = '';     # we shall not create a dangling link
+my $kernel_arch       = "=B";
+my $ramdisk           = "/usr/sbin/update-initramfs";
+my $package_name    = "linux-image-$version";
+
+my $Loader          = "NoLOADER"; # 
+$Loader             = "LILO"     if $loader =~ /^lilo/io;
+$Loader             = "SILO"     if $loader =~ /^silo/io;
+$Loader             = "QUIK"     if $loader =~ /^quik/io;
+$Loader             = "yaboot"   if $loader =~ /^yaboot/io;
+$Loader             = "PALO"     if $loader =~ /^palo/io;
+$Loader             = "NETTROM"  if $loader =~ /^nettrom/io;
+$Loader             = "VMELILO"  if $loader =~ /^vmelilo/io;
+$Loader             = "ZIPL"     if $loader =~ /^zipl/io;
+$Loader             = "ELILO"    if $loader =~ /^elilo/io;
+
+
+# This should not point to /tmp, because of security risks.
+my $temp_file_name = "/var/log/$loader" . "_log.$$";
+
+#known variables
+my @boilerplate     = ();
+my @silotemplate    = ();
+my @quiktemplate    = ();
+my @palotemplate    = ();
+my @vmelilotemplate = ();
+my $bootdevice      = '';
+my $rootdevice      = '';
+my $rootdisk        = '';
+my $rootpartition   = '';
+my $image_dest      = "/";
+my $realimageloc    = "/$image_dir/";
+my $have_conffile   = "";
+my $CONF_LOC        = '/etc/kernel-img.conf';
+my $relative_links = '';
+my $silent_modules  = '';
+my $silent_loader   = '';
+my $warn_reboot     = 'Yes';     # Warn that we are installing a version of
+                                 # the kernel we are running
+
+chdir('/')           or die "could not chdir to /:$!\n";
+# remove multiple leading slashes; make sure there is at least one.
+$realimageloc  =~ s|^/*|/|o;
+$realimageloc  =~ s|/+|/|o;
+
+
+if (-r "$CONF_LOC" && -f "$CONF_LOC"  ) {
+  if (open(CONF, "$CONF_LOC")) {
+    while (<CONF>) {
+      chomp;
+      s/\#.*$//g;
+      next if /^\s*$/;
+
+      $do_symlink      = "" if /^\s*do_symlinks\s*=\s*(no|false|0)\s*$/ig;
+      $no_symlink      = "" if /^\s*no_symlinks\s*=\s*(no|false|0)\s*$/ig;
+      $reverse_symlink = "" if /^\s*reverse_symlinks\s*=\s*(no|false|0)\s*$/ig;
+      $link_in_boot    = "" if /^\s*image_in_boot\s*=\s*(no|false|0)\s*$/ig;
+      $link_in_boot    = "" if /^\s*link_in_boot\s*=\s*(no|false|0)\s*$/ig;
+      $move_image      = "" if /^\s*move_image\s*=\s*(no|false|0)\s*$/ig;
+      $clobber_modules = '' if /^\s*clobber_modules\s*=\s*(no|false|0)\s*$/ig;
+      $do_boot_enable  = '' if /^\s*do_boot_enable\s*=\s*(no|false|0)\s*$/ig;
+      $do_bootfloppy   = '' if /^\s*do_bootfloppy\s*=\s*(no|false|0)\s*$/ig;
+      $relative_links  = '' if /^\s*relative_links \s*=\s*(no|false|0)\s*$/ig;
+      $do_bootloader   = '' if /^\s*do_bootloader\s*=\s*(no|false|0)\s*$/ig;
+      $do_initrd       = '' if /^\s*do_initrd\s*=\s*(no|false|0)\s*$/ig;
+      $warn_initrd     = '' if /^\s*warn_initrd\s*=\s*(no|false|0)\s*$/ig;
+      $use_hard_links  = '' if /^\s*use_hard_links\s*=\s*(no|false|0)\s*$/ig;
+      $silent_modules  = '' if /^\s*silent_modules\s*=\s*(no|false|0)\s*$/ig;
+      $silent_loader   = '' if /^\s*silent_loader\s*=\s*(no|false|0)\s*$/ig;
+      $warn_reboot     = '' if /^\s*warn_reboot\s*=\s*(no|false|0)\s*$/ig;
+      $minimal_swap    = '' if /^\s*minimal_swap\s*=\s*(no|false|0)\s*$/ig;
+      $ignore_depmod_err = '' if /^\s*ignore_depmod_err\s*=\s*(no|false|0)\s*$/ig;
+      $relink_build_link = '' if /^\s*relink_build_link\s*=\s*(no|false|0)\s*$/ig;
+      $force_build_link = '' if /^\s*force_build_link\s*=\s*(no|false|0)\s*$/ig;
+
+      $do_symlink      = "Yes" if /^\s*do_symlinks\s*=\s*(yes|true|1)\s*$/ig;
+      $no_symlink      = "Yes" if /^\s*no_symlinks\s*=\s*(yes|true|1)\s*$/ig;
+      $reverse_symlink = "Yes" if /^\s*reverse_symlinks\s*=\s*(yes|true|1)\s*$/ig;
+      $link_in_boot    = "Yes" if /^\s*image_in_boot\s*=\s*(yes|true|1)\s*$/ig;
+      $link_in_boot    = "Yes" if /^\s*link_in_boot\s*=\s*(yes|true|1)\s*$/ig;
+      $move_image      = "Yes" if /^\s*move_image\s*=\s*(yes|true|1)\s*$/ig;
+      $clobber_modules = "Yes" if /^\s*clobber_modules\s*=\s*(yes|true|1)\s*$/ig;
+      $do_boot_enable  = "Yes" if /^\s*do_boot_enable\s*=\s*(yes|true|1)\s*$/ig;
+      $do_bootfloppy   = "Yes" if /^\s*do_bootfloppy\s*=\s*(yes|true|1)\s*$/ig;
+      $do_bootloader   = "Yes" if /^\s*do_bootloader\s*=\s*(yes|true|1)\s*$/ig;
+      $relative_links  = "Yes" if /^\s*relative_links\s*=\s*(yes|true|1)\s*$/ig;
+      $do_initrd       = "Yes" if /^\s*do_initrd\s*=\s*(yes|true|1)\s*$/ig;
+      $warn_initrd     = "Yes" if /^\s*warn_initrd\s*=\s*(yes|true|1)\s*$/ig;
+      $use_hard_links  = "Yes" if /^\s*use_hard_links\s*=\s*(yes|true|1)\s*$/ig;
+      $silent_modules  = 'Yes' if /^\s*silent_modules\s*=\s*(yes|true|1)\s*$/ig;
+      $silent_loader   = 'Yes' if /^\s*silent_loader\s*=\s*(yes|true|1)\s*$/ig;
+      $warn_reboot     = 'Yes' if /^\s*warn_reboot\s*=\s*(yes|true|1)\s*$/ig;
+      $minimal_swap    = 'Yes' if /^\s*minimal_swap\s*=\s*(yes|true|1)\s*$/ig;
+      $ignore_depmod_err = 'Yes' if /^\s*ignore_depmod_err\s*=\s*(yes|true|1)\s*$/ig;
+      $relink_build_link = 'Yes' if /^\s*relink_build_link\s*=\s*(yes|true|1)\s*$/ig;
+      $force_build_link = 'Yes' if /^\s*force_build_link\s*=\s*(yes|true|1)\s*$/ig;
+
+      $image_dest      = "$1"  if /^\s*image_dest\s*=\s*(\S+)/ig;
+      $postinst_hook   = "$1"  if /^\s*postinst_hook\s*=\s*(\S+)/ig;
+      $postrm_hook     = "$1"  if /^\s*postrm_hook\s*=\s*(\S+)/ig;
+      $preinst_hook    = "$1"  if /^\s*preinst_hook\s*=\s*(\S+)/ig;
+      $prerm_hook      = "$1"  if /^\s*prerm_hook\s*=\s*(\S+)/ig;
+      $ramdisk         = "$1"  if /^\s*ramdisk\s*=\s*(.+)$/ig;
+    }
+    close CONF;
+    $have_conffile = "Yes";
+  }
+}
+
+if ($link_in_boot) {
+  $image_dest = "/$image_dir/";
+  $image_dest =~ s|^/*|/|o;
+}
+
+$image_dest = "$image_dest/";
+$image_dest =~ s|/+$|/|o;
+
+# The destdir may be gone by now.
+if (-d "$image_dest") {
+  chdir("$image_dest") or die "could not chdir to $image_dest:$!\n";
+}
+
+# Paranoid check to make sure that the correct value is put in there
+if (! $kimage)                    {$kimage = "vmlinuz"} # Hmm. empty
+elsif ($kimage =~ m/^b?zImage$/o) {$kimage = "vmlinuz"} # these produce vmlinuz
+elsif ($kimage =~ m/^[iI]mage$/o) { my $nop = $kimage;}
+elsif ($kimage =~ m/^vmlinux$/o)  { my $nop = $kimage;}
+else                              {$kimage = "vmlinuz"} # default
+
+$ENV{KERNEL_ARCH}=$kernel_arch if $kernel_arch;
+
+
+######################################################################
+######################################################################
+############
+######################################################################
+######################################################################
+sub remove_sym_link {
+  my $bad_image = $_[0];
+
+  warn "Removing symbolic link $bad_image \n";
+  if ($loader =~ /lilo/i) 
+    {
+      warn "Unless you used the optional flag in lilo, \n";
+    }
+  warn " you may need to re-run your boot loader" . ($loader ? "[$loader]":"")
+    . "\n";
+  # Remove the dangling link
+  unlink "$bad_image";
+}
+
+######################################################################
+######################################################################
+############
+######################################################################
+######################################################################
+sub CanonicalizePath {
+  my $path = join '/', @_;
+  my @work = split '/', $path;
+  my @out;
+  my $is_absolute;
+
+  if (@work && $work[0] eq "") { $is_absolute = 1; shift @work; }
+
+  while (@work) {
+    my $seg = shift @work;
+    if ($seg eq "." || $seg eq "") {
+    } elsif ($seg eq "..") {
+      if (@out && $out[-1] ne "..") {
+        pop @out;
+      } else {
+        # Leading "..", or "../..", etc.
+        push @out, $seg;
+      }
+    } else {
+      push @out, $seg;
+    }
+  }
+
+  unshift @out, "" if $is_absolute;
+  return join('/', @out);
+}
+
+######################################################################
+######################################################################
+############
+######################################################################
+######################################################################
+# This removes dangling symlinks. What do we do about hard links? Surely a 
+# something with the nane $image_dest . "$kimage" ought not to be left behind? 
+sub image_magic {
+  my $kimage = $_[0];
+  my $image_dest = $_[1];
+
+  if (-l "$kimage") {
+    # There is a symbolic link
+    my $force_move = 0;
+    my $vmlinuz_target = readlink "$kimage";
+    my $real_target = '';
+    $real_target = abs_path($vmlinuz_target) if defined ($vmlinuz_target);
+    if (!defined($vmlinuz_target) || ! -f "$real_target") {
+      # what, a dangling symlink?
+      warn "The link "  . $image_dest . "$kimage is a damaged link\n";
+      # Remove the dangling link
+      &remove_sym_link("$kimage");
+    }
+    else {
+      my $canonical_target = CanonicalizePath("$vmlinuz_target");
+      if (! -e $canonical_target) {
+        warn "The link "  . $image_dest . "$kimage is a dangling link\n";
+        &remove_sym_link("$kimage");
+      }
+    }
+  }
+}
+
+# set the env var stem
+$ENV{'STEM'} = "linux";
+
+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;
+    }
+  }
+}
+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 {
+      warn "The provided $type hook script [$script] could not be run.\n";
+    }
+  }
+  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;
+      }
+    }
+    # No luck
+    print STDERR "Could not find $type hook script [$script].\n";
+    warn "Looked in: '/bin', '/sbin', '/usr/bin', '/usr/sbin'\n";
+  }
+}
+
+## Run user hook script here, if any
+if ($postrm_hook) {
+  &run_hook("postrm", $postrm_hook);
+}
+if (-d "/etc/kernel/postrm.d") {
+  warn "Examining /etc/kernel/postrm.d .\n";
+  system ("run-parts --verbose --exit-on-error --arg=$version " .
+          "--arg=$realimageloc$kimage-$version " .
+          "/etc/kernel/postrm.d") &&
+            die "Failed to process /etc/kernel/postrm.d";
+}
+if (-d "/etc/kernel/postrm.d/$version") {
+  warn "Examining /etc/kernel/postrm.d/$version .\n";
+  system ("run-parts --verbose --exit-on-error --arg=$version " .
+          "--arg=$realimageloc$kimage-$version " .
+          "/etc/kernel/postrm.d/$version") &&
+            die "Failed to process /etc/kernel/postrm.d/$version";
+}
+
+# check and remove damaged and dangling symlinks
+if ($ARGV[0] !~ /upgrade/) {
+  system("$ramdisk -d -k " . $version . " > /dev/null 2>&1");
+  if (-f $realimageloc . "initrd.img-$version.bak") {
+    unlink $realimageloc . "initrd.img-$version.bak";
+  }
+  image_magic($kimage,          $image_dest);
+  image_magic($kimage . ".old", $image_dest);
+  image_magic("initrd.img",     $image_dest) if $initrd;
+  image_magic("initrd.img.old", $image_dest) if $initrd;
+}
+
+exit 0;
+
+__END__
+
+
+
+
+
+