| #! /usr/bin/perl |
| # -*- Mode: Perl -*- |
| # image.prerm --- |
| # Author : root ( root@melkor.pilgrim.umass.edu ) |
| # Created On : Fri May 17 03:28:59 1996 |
| # Created On Node : melkor.pilgrim.umass.edu |
| # Last Modified By : Manoj Srivastava |
| # Last Modified On : Sat Aug 5 13:14:17 2006 |
| # Last Machine Used: glaurung.internal.golden-gryphon.com |
| # Update Count : 85 |
| # Status : Unknown, Use with caution! |
| # HISTORY : |
| # Description : |
| # |
| # |
| # $Id: image.prerm,v 1.22 2003/10/07 16:24:20 srivasta Exp $ |
| # |
| # |
| #use strict; |
| |
| $|=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_symlinks = "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 $use_hard_links = ''; # hardlinks do not wirk 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 = ''; # There is no harm in checking the 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 $image_dest = "/"; |
| my $realimageloc = "/$image_dir/"; |
| my $have_conffile = ""; |
| my $CONF_LOC = '/etc/kernel-img.conf'; |
| my $relative_links = ''; |
| my $silent_loader = ''; |
| my $warn_reboot = 'Yes'; # Warn that we are installing a version of |
| # the kernel we are running |
| |
| # remove multiple leading slashes; make sure there is at least one. |
| $realimageloc =~ s|^/*|/|o; |
| $realimageloc =~ s|/+|/|o; |
| |
| my $DEBUG = 0; |
| |
| # Variables used |
| my $image=''; |
| my $ret=0; |
| my $seen=''; |
| my $answer=''; |
| my $running = ''; |
| my $WouldInvalidate = 0; |
| |
| if ($ARGV[0] && ($ARGV[0] =~ /remove/ || $ARGV[0] =~ /upgrade/)) { |
| if (-l "/usr/doc/linux-image-$version") { |
| unlink "/usr/doc/linux-image-$version"; |
| } |
| } |
| |
| # Ignore all invocations uxcept when called on to remove |
| exit 0 unless ($ARGV[0] && $ARGV[0] =~ /remove/) ; |
| |
| # Paranoid check to make sure that the correct value is put in there |
| if (! $kimage) { $kimage = "vmlinuz";} # Hmm. empty |
| elsif ($kimage =~ m/^b?uImage$/o) { $kimage = "vmlinuz";} # these produce vmlinuz |
| elsif ($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 { $kimage = "vmlinuz";} # Default |
| |
| if (-r "$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; |
| $use_hard_links = '' if /^\s*use_hard_links\s*=\s*(no|false|0)\s*$/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; |
| $use_hard_links = "Yes" if /^\s*use_hard_links\s*=\s*(yes|true|1)\s*$/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"; |
| } |
| } |
| |
| |
| $ENV{KERNEL_ARCH}=$kernel_arch if $kernel_arch; |
| |
| #check to see if we are trying to remove a running kernel |
| # if so we abort right now. |
| chop($running=`uname -r`); |
| if ($running eq $version) { |
| print STDERR "WARN: Proceeding with removing running kernel image.\n"; |
| } |
| |
| #Now, they have an alternate kernel which they are currently running |
| |
| # This is just us being nice to lilo users. |
| |
| chdir("/") or die "could not chdir to /:$!\n"; |
| |
| if (-f "/etc/$loader.conf") { #I know, could be a link, but .. |
| open (LILO, "/etc/$loader.conf") || &success(); # this is not critical |
| while (<LILO>) { |
| chop; |
| s/\#.*//; # nix the comments |
| next unless /^\s*image\s*=\s(\S+)/o; |
| $image = $1; |
| if ($image && -e $image) { |
| while (defined($image) && -l $image) { |
| $image = readlink ($image); |
| } |
| if (defined($image) && -e $image) { |
| $WouldInvalidate |= $image =~ /$kimage-$version/; |
| } |
| else { |
| &success(); # invalid $loader.conf file |
| } |
| } |
| else { |
| &success(); # invalid $loader.conf file |
| } |
| } |
| close (LILO); |
| if ($WouldInvalidate) { |
| print STFERR "WARN: Proceeding with removing running kernel image.\n"; |
| &success(); |
| } |
| } |
| |
| |
| # 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; |
| } |
| exit $? >> 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 { |
| die "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"; |
| die "Looked in: '/bin', '/sbin', '/usr/bin', '/usr/sbin'\n"; |
| } |
| } |
| |
| |
| my $options; |
| for (@ARGV) { |
| s,','\\'',g; |
| $options .= " '$_'"; |
| } |
| $ENV{'DEB_MAINT_PARAMS'}="$options"; |
| |
| ## Run user hook script here, if any |
| if (-x "$prerm_hook") { |
| &run_hook("prerm", $prerm_hook); |
| } |
| if (-d "/etc/kernel/prerm.d") { |
| print STDERR "Examining /etc/kernel/prerm.d.\n"; |
| system ("run-parts --verbose --exit-on-error --arg=$version " . |
| "--arg=$realimageloc$kimage-$version /etc/kernel/prerm.d") && |
| die "Failed to process /etc/kernel/prerm.d"; |
| } |
| if (-d "/etc/kernel/prerm.d/$version") { |
| print STDERR "Examining /etc/kernel/prerm.d/$version.\n"; |
| system ("run-parts --verbose --exit-on-error --arg=$version" . |
| " --arg=$realimageloc$kimage-$version " . |
| "/etc/kernel/prerm.d/$version") && |
| die "Failed to process /etc/kernel/prerm.d/$version"; |
| } |
| |
| sub success () { |
| # NOTE: need to keep this list in sync with rules.d/2-binary-arch.mk |
| my %files_to_keep = ( |
| 'modules.builtin' => 1, |
| 'modules.order' => 1, |
| ); |
| my $short; |
| for my $file (</lib/modules/$version/modules.*>) { |
| $short = $file; $short =~ s,.*/,,; |
| if (!defined $files_to_keep{$short}) { |
| unlink "$file"; |
| } |
| } |
| exit 0; |
| } |
| |
| |
| |
| &success(); |
| exit 0; |
| __END__ |
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