| #! /usr/bin/perl |
| # -*- Mode: Cperl -*- |
| # image.preinst --- |
| # Author : Manoj Srivastava ( srivasta@tiamat.datasync.com ) |
| # Created On : Sun Jun 14 03:38:02 1998 |
| # Created On Node : tiamat.datasync.com |
| # Last Modified By : Manoj Srivastava |
| # Last Modified On : Sun Sep 24 14:04:42 2006 |
| # Last Machine Used: glaurung.internal.golden-gryphon.com |
| # Update Count : 99 |
| # Status : Unknown, Use with caution! |
| # HISTORY : |
| # Description : |
| # |
| # |
| |
| # |
| #use strict; #for debugging |
| |
| use Debconf::Client::ConfModule qw(:all); |
| version('2.0'); |
| my $capb=capb("backup"); |
| |
| $|=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, nettrom |
| # or elilo |
| my $image_dir = "/boot"; # where the image is located |
| 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_src_link = 'YES'; # There is no harm in checking the link |
| 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"; # List of tools to create initial ram fs. |
| 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; |
| |
| |
| #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_loader = ''; |
| my $warn_reboot = ''; # Warn that we are installing a version of |
| # the kernel we are running |
| |
| my $modules_base = '/lib/modules'; |
| |
| die "Pre inst Internal error. Aborting." unless $version; |
| |
| exit 0 if $ARGV[0] =~ /abort-upgrade/; |
| exit 1 unless $ARGV[0] =~ /(install|upgrade)/; |
| |
| # 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; |
| $do_boot_enable = '' if /^\s*do_boot_enable\s*=\s*(no|false|0)\s*$/ig; |
| $do_bootfloppy = '' if /^\s*do_bootfloppy\s*=\s*(no|false|0)\s*$/ig; |
| $do_bootloader = '' if /^\s*do_bootloader\s*=\s*(no|false|0)\s*$/ig; |
| $relative_links = '' if /^\s*relative_links \s*=\s*(no|false|0)\s*$/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; |
| $relink_src_link = '' if /^\s*relink_src_link\s*=\s*(no|false|0)\s*$/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; |
| $do_boot_enable = "Yes" if /^\s*do_boot_enable\s*=\s*(yes|true|1)\s*$/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; |
| $use_hard_links = "Yes" if /^\s*use_hard_links\s*=\s*(yes|true|1)\s*$/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; |
| $relink_src_link = 'Yes' if /^\s*relink_src_link\s*=\s*(yes|true|1)\s*$/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"; |
| $have_conffile = "Yes"; # stop perl complaining |
| } |
| } |
| |
| $ENV{KERNEL_ARCH}=$kernel_arch if $kernel_arch; |
| |
| # About to upgrade this package from version $2 TO THIS VERSION. |
| # "prerm upgrade" has already been called for the old version of |
| # this package. |
| |
| sub find_initrd_tool { |
| my $hostversion = shift; |
| my $version = shift; |
| my @ramdisks = |
| grep { |
| my $args = |
| "$_ " . |
| "--supported-host-version=$hostversion " . |
| "--supported-target-version=$version " . |
| "1>/dev/null 2>&1" |
| ; |
| system($args) == 0; |
| } |
| split (/[:,\s]+/, $ramdisk); |
| } |
| |
| sub check { |
| my $version = shift; |
| my $lib_modules="$modules_base/$version"; |
| my $message = ''; |
| |
| if (-d "$lib_modules") { |
| opendir(DIR, $lib_modules) || die "can’t opendir $lib_modules: $!"; |
| my @children = readdir(DIR); |
| if ($#children > 1) { |
| my @dirs = grep { -d "$lib_modules/$_" } @children; |
| if ($#dirs > 1) { # we have subdirs |
| my $dir_message=''; |
| for my $dir (@dirs) { |
| if ($dir =~/kernel$/) { |
| $dir_message="An older install was detected.\n"; |
| } |
| else { |
| $dir_message="Module sub-directories were detected.\n" |
| unless $dir_message; |
| } |
| } |
| $message += $dir_message if $dir_message; |
| } |
| |
| my @links = grep { -l "$lib_modules/$_" } @children; |
| if ($#links > -1) { |
| my $links_message = ''; |
| for my $link (@links) { |
| next if ($link =~ /^build$/); |
| next if ($link =~ /^source$/); |
| $links_message = "Symbolic links were detected in $modules_base/$version.\n"; |
| } |
| $message += $links_message if $links_message; |
| } |
| my @files = grep { -f "$lib_modules/$_" } @children; |
| $message += "Additional files also exist in $modules_base/$version.\n" |
| if ($#files > -1); |
| } |
| } |
| else { $message .= "$lib_modules does not exist. ";} |
| return $message; |
| } |
| |
| if (-d "$modules_base/$version") { |
| my $errors=check($version); |
| warn "Info:\n$errors\n" if $errors; |
| } |
| |
| # 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 "$preinst_hook") { |
| &run_hook("preinst", $preinst_hook); |
| } |
| if (-d "/etc/kernel/preinst.d") { |
| print STDERR "Examining /etc/kernel/preinst.d/\n"; |
| system ("run-parts --verbose --exit-on-error --arg=$version" . |
| " --arg=$realimageloc$kimage-$version" . |
| " /etc/kernel/preinst.d") && |
| die "Failed to process /etc/kernel/preinst.d"; |
| } |
| if (-d "/etc/kernel/preinst.d/$version") { |
| print STDERR "Examining /etc/kernel/preinst.d/$version.\n"; |
| system ("run-parts --verbose --exit-on-error --arg=$version" . |
| " --arg=$realimageloc$kimage-$version" . |
| " /etc/kernel/preinst.d/$version") && |
| die "Failed to process /etc/kernel/preinst.d/$version"; |
| } |
| print STDERR "Done.\n"; |
| |
| exit 0; |
| |
| __END__ |
| |
| |