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Unified Diff: debian.chrome/control-scripts/postrm

Issue 646032: Rename config to match naming convention. (Closed)
Patch Set: Send mail Created 10 years, 10 months ago
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Index: debian.chrome/control-scripts/postrm
diff --git a/debian.chrome/control-scripts/postrm b/debian.chrome/control-scripts/postrm
new file mode 100644
index 0000000000000000000000000000000000000000..3326a155f89129f61bcf43090733291f688df052
--- /dev/null
+++ b/debian.chrome/control-scripts/postrm
@@ -0,0 +1,353 @@
+#! /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__
+
+
+
+
+
+
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