diff options
Diffstat (limited to 'debian/control-scripts/postinst')
| -rw-r--r-- | debian/control-scripts/postinst | 1094 |
1 files changed, 1094 insertions, 0 deletions
diff --git a/debian/control-scripts/postinst b/debian/control-scripts/postinst new file mode 100644 index 00000000000..00529e1fe60 --- /dev/null +++ b/debian/control-scripts/postinst @@ -0,0 +1,1094 @@ +#! /usr/bin/perl +# OriginalAuthor : Manoj Srivastava ( srivasta@pilgrim.umass.edu ) +# +# Customized for Ubuntu by: Ben Collins <bcollins@ubuntu.com> + +#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, nettrom, arcboot or delo +my $image_dir = "/boot"; # where the image is located +my $clobber_modules = ''; # target machine defined +my $relative_links = ""; # target machine defined +my $initrd = "YES"; # initrd kernel +my $do_initrd = ''; # Normally we do not +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 $kernel_arch = "=B"; +my $ramdisk = "/usr/sbin/update-initramfs"; # List of tools to create initial ram fs. +my $notifier = "/usr/share/update-notifier/notify-reboot-required"; +my $package_name = "linux-image-$version"; +my $explicit_do_loader = 'Yes'; + +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 $loader =~ /^elilo/io; +$Loader = "ARCBOOT" if $loader =~ /^arcboot/io; +$Loader = "DELO" if $loader =~ /^delo/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 $silent_modules = ''; +my $silent_loader = ''; +my $warn_reboot = 'Yes'; # Warn that we are installing a version of + # the kernel we are running + +my $modules_base = '/lib/modules'; +my $CONF_LOC = '/etc/kernel-img.conf'; + +# Ignore all invocations except when called on to configure. +exit 0 unless $ARGV[0] =~ /configure/; + +my $DEBUG = 0; + +# Do some preliminary sanity checks here to ensure we actually have an +# valid image dir +chdir('/') or die "could not chdir to /:$!\n"; +die "Internal Error: ($image_dir) is not a directory!\n" + unless -d $image_dir; + +# remove multiple leading slashes; make sure there is at least one. +$realimageloc =~ s|^/*|/|o; +$realimageloc =~ s|/+|/|o; +die "Internal Error: ($realimageloc) is not a directory!\n" + unless -d $realimageloc; + +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_symlink\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; + $explicit_do_loader = '' 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_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; + + $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; + $explicit_do_loader = "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_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; + + $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"; + } +} + + + +# For some versions of kernel-package, we had this warning in the +# postinst, but the rules did not really interpolate the value in. +# Here is a sanity check. +my $pattern = "=" . "I"; +$initrd=~ s/^$pattern$//; + +if ($link_in_boot) { + $image_dest = "/$image_dir/"; # same as realimageloc +} + +# Tack on at least one trainling / +$image_dest = "$image_dest/"; +$image_dest =~ s|^/*|/|o; +$image_dest =~ s|/+$|/|o; + +if (! -d "$image_dest") { + die "Expected Image Destination dir ($image_dest) to be a valid directory!\n"; +} + +# sanity +if (!($do_bootfloppy || $do_bootloader)) { + $do_boot_enable = ''; +} +if ($do_symlink && $no_symlink) { + warn "Both do_symlinks and no_symlinks options enabled; disabling no_symlinks\n"; + $no_symlink = 0; +} + +# most of our work is done in $image_dest (nominally /) +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?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 + +$ENV{KERNEL_ARCH}=$kernel_arch if $kernel_arch; + + +die "Internal Error: Could not find image (" . $realimageloc + . "$kimage-$version)\n" unless -e $realimageloc + . "$kimage-$version"; + +# search for the boot loader in the path +my $loader_exec; +($loader_exec = $loader) =~ s|.*/||; +my ($loaderloc) = grep -x, map "$_/$loader_exec", + map { length($_) ? $_ : "." } split /:/, $ENV{PATH}; + + +###################################################################### +###################################################################### +########### Test whether a relative symlinkwould be OK ####### +###################################################################### +###################################################################### +sub test_relative { + my %params = @_; + my $cwd; + + die "Internal Error: Missing Required paramater 'Old Dir' " + unless $params{'Old Dir'}; + die "Internal Error: Missing Required paramater New Dir' " + unless $params{'New Dir'}; + + + die "Internal Error: No such dir $params{'Old Dir'} " + unless -d $params{'Old Dir'}; + die "Internal Error: No such dir $params{'New Dir'} " + unless -d $params{'New Dir'}; + + warn "Test relative: testing $params{'Old Dir'} -> $params{'New Dir'}" + if $DEBUG; + chomp($cwd = `pwd`); + chdir ($params{'New Dir'}) or die "Could not chdir to $params{'New Dir'}:$!"; + my $ok = 0; + $params{'Old Dir'} =~ s|^/*||o; + if (-d $params{'Old Dir'} ) { + if (defined $params{'Test File'}) { + if (-e $params{'Old Dir'} . $params{'Test File'}) { + $ok = 1; + } + } else { + $ok = 1; # well, backward compatibility + } + } + chdir ($cwd) or die "Could not chdir to $params{'New Dir'}:$!"; + return $ok; +} + +###################################################################### +###################################################################### +############ +###################################################################### +###################################################################### +# 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); +# } +###################################################################### +###################################################################### +############ +###################################################################### +###################################################################### + +sub spath { + my %params = @_; + + die "Missing Required paramater 'Old'" unless $params{'Old'}; + die "Missing Required paramater 'New'" unless $params{'New'}; + + my @olddir = split '/', `readlink -q -m $params{'Old'}`; + my @newdir = split '/', `readlink -q -m $params{'New'}`; + my @outdir = @olddir; + + my $out = ''; + my $i; + for ($i = 0; $i <= $#olddir && $i <= $#newdir; $i++) { + $out++ if ($olddir[$i] ne $newdir[$i]); + shift @outdir unless $out; + unshift @outdir, ".." if $out; + } + if ($#newdir > $#olddir) { + for ($i=0; $i < $#newdir; $i++) { + unshift @outdir, ".."; + } + } + return join ('/', @outdir); +} +###################################################################### +###################################################################### +############ +###################################################################### +###################################################################### + + +# This routine actually moves the kernel image +# From: $realimageloc/$kimage-$version (/boot/vmlinuz-2.6.12) +# To: $image_dest/$kimage-$version (/vmlinuz-2.6.12) +# Note that the image is moved to a versioned destination, but ordinary +# symlinks we create otherwise are not normally versioned +sub really_move_image { + my $src_dir = $_[0]; + my $target = $_[1]; + my $dest_dir = $_[2]; + + warn "Really move image: src_dir=$src_dir, target=$target,\n destdir=$dest_dir" + if $DEBUG; + if (-e "$target") { + # we should be in dir $dest_dir == $image_dest /, normally + rename("$target", "$target.$$") || + die "failed to move " . $dest_dir . "$target:$!"; + warn "mv $target $target.$$" if $DEBUG; + } + warn "mv -f $src_dir$target $target" if $DEBUG; + my $ret = system("mv -f " . $src_dir . "$target " . + " $target"); + if ($ret) { + die("Failed to move " . $src_dir . "$target to " + . $dest_dir . "$target.\n"); + } + # Ok, now we may clobber the previous .old files + if (-e "$target.$$") { + rename("$target.$$", "$target.old") || + die "failed to move " . $dest_dir . "$target:$!"; + warn "mv $target.$$ $target " if $DEBUG; + } +} + +# Normally called after really_move_image; and only called if we asked for +# reversed link this routine reverses the symbolic link that is notmally +# created. Since the real kernel image has been moved over to +# $image_dest/$kimage-$version. So, this routine links +# From: $image_dest/$kimage-$version (/vmlinuz-2.6.12) +# To: $realimageloc/$kimage-$version (/boot/vmlinuz-2.6.12) +sub really_reverse_link { + my $src_dir = $_[0]; + my $link_name = $_[1]; + my $dest_dir = $_[2]; + warn "Really reverse link: src_dir=$src_dir, link name=$link_name\n" . + "\tdestdir=$dest_dir" if $DEBUG; + + my $Old = $dest_dir; + if (test_relative ('Old Dir' => $Old, 'New Dir' => $src_dir, + 'Test File' => "$link_name")) { + $Old =~ s|^/*||o; + } + # Special case is they are in the same dir + my $rel_path = spath('Old' => "$Old", 'New' => "$src_dir" ); + $Old ="" if $rel_path =~ m/^\s*$/o; + + if ($use_hard_links =~ m/YES/i) { + link($Old . "$link_name", $src_dir . "$link_name") || + die("Failed to link " . $dest_dir . "$link_name to " . $src_dir . + "$link_name .\n"); + warn "ln " . $Old . "$link_name " . $src_dir . "$link_name" if $DEBUG; + } + else { + symlink($Old . "$link_name", $src_dir . "$link_name") || + die("Failed to symbolic-link " . $dest_dir . "$link_name to " . $src_dir + . "$link_name : $!\n"); + warn "ln -s " . $Old . "$link_name " . $src_dir . "$link_name" if $DEBUG; + } +} + +# This routine is invoked if there is a symbolic link in place +# in $image_dest/$kimage -- so a symlink exists in the destination. +# What we are trying to determine is if we need to move the symbolic link over +# to the the .old location +sub move_p { + my $kimage = $_[0]; # Name of the symbolic link + my $image_dest = $_[1]; # The directory the links goes into + my $image_name = $_[2]; + my $src_dir = $_[3]; + my $force_move = 0; + warn "Move?: kimage=$kimage, image_dest=$image_dest, \n" . + "\timage_name=$image_name, src_dir=$src_dir" if $DEBUG; + + if ($no_symlink || $reverse_symlink) { + # we do not want links, yet we have a symbolic link here! + warn "found a symbolic link in " . $image_dest . "$kimage \n" . + "even though no_symlink is defined\n" if $no_symlink; + warn "found a symbolic link in " . $image_dest . "$kimage \n" . + "even though reverse_symlink is defined\n" if $reverse_symlink; + # make sure we change this state of affairs + $force_move = 1; + return $force_move; + } + + warn "DEBUG: OK. We found symlink, and we should have a symlink here.\n" + if $DEBUG; + my $vmlinuz_target = readlink "$kimage"; + my $real_target = ''; + my $target = `readlink -q -m "${realimageloc}${kimage-$version}"`; + $real_target = abs_path($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 dangling link" . + "to $real_target\n"; + $force_move = 1; + return $force_move; + } + + + warn "DEBUG: The link $kimage points to ($vmlinuz_target)\n" if $DEBUG; + warn "DEBUG: ($vmlinuz_target) is really ($real_target)\n" if $DEBUG; + my $cwd; + chomp ($cwd=`pwd`); + if ($vmlinuz_target !~ m|^/|o) { + $vmlinuz_target = $cwd . "/" . $vmlinuz_target; + $vmlinuz_target =~ s|/+|/|o; + } + $vmlinuz_target = `readlink -q -m $vmlinuz_target`; + + if ("$vmlinuz_target" ne "$target") { + warn "DEBUG: We need to handle this.\n" if $DEBUG; + if ($minimal_swap) { + warn "DEBUG: Minimal swap.\n" if $DEBUG; + if (-l "$kimage.old") { + warn "DEBUG: There is an old link at $kimage.old\n" if $DEBUG; + my $old_target = readlink "$kimage.old"; + my $real_old_target = ''; + $real_old_target=abs_path($old_target) if defined ($old_target); + + if ($real_old_target && -f "$real_old_target") { + if ($old_target !~ m|^/|o) { + $old_target = $cwd . "/" . $old_target; + $old_target =~ s|/+|/|o; + } + $old_target = `readlink -q -m $old_target`; + if ("$old_target" ne "$target") { + $force_move = 1; + warn "DEBUG: Old link ($old_target) does not point to us ($target)\n" + if $DEBUG; + } + else { # The .old points to the current + warn "$kimage.old --> $target -- doing nothing"; + $force_move = 0; + } + } + else { + warn "DEBUG: Well, the old link does not exist -- so we move\n" + if $DEBUG; + $force_move = 1; + } + } + else { + warn "DEBUG: No .old link -- OK to move\n" + if $DEBUG; + $force_move = 1; + } + } + else { + warn "DEBUG: ok, minimal swap is no-- so we move.\n" + if $DEBUG; + $force_move = 1; + } + } + else { # already have proper link + warn "$kimage($vmlinuz_target) points to $target ($real_target) -- doing nothing"; + $force_move = 0; + } + return $force_move; +} + + +# This routine moves the symbolic link around (/vmlinuz -> /vmlinuz.old) +# It pays attention to whether we should the fact whether we should be using +# hard links or not. +sub really_move_link { + my $kimage = $_[0]; # Name of the symbolic link + my $image_dest = $_[1]; # The directory the links goes into + my $image_name = $_[2]; + my $src_dir = $_[3]; + warn "really_move_link: kimage=$kimage, image_dest=$image_dest\n" . + "\t image_name=$image_name, src_dir=$src_dir" if $DEBUG; + + # don't clobber $kimage.old quite yet + rename("$kimage", "$kimage.$$") || + die "failed to move " . $image_dest . "$kimage:$!"; + warn "mv $kimage $kimage.$$" if $DEBUG; + my $Old = $src_dir; + my $cwd; + + chomp($cwd=`pwd`); + if (test_relative ('Old Dir' => $Old, 'New Dir' => $cwd, + 'Test File' => "$image_name")) { + $Old =~ s|^/*||o; + } + # Special case is they are in the same dir + my $rel_path = spath('Old' => "$Old", 'New' => "$cwd" ); + $Old ="" if $rel_path =~ m/^\s*$/o; + + if ($use_hard_links =~ m/YES/i) { + warn "ln ${Old}${image_name} $kimage" if $DEBUG; + if (! link("${Old}${image_name}", "$kimage")) { + rename("$kimage.$$", "$kimage"); + die("Failed to link ${Old}${image_name} to " . + "${image_dest}${kimage}.\n"); + } + } + else { + warn "ln -s ${Old}${image_name} $kimage" if $DEBUG; + if (! symlink("${Old}${image_name}", "$kimage")) { + rename("$kimage.$$", "$kimage"); + die("Failed to symbolic-link ${Old}${image_name} to " . + "${image_dest}${kimage}: $!\n"); + } + } + + # Ok, now we may clobber the previous .old file + if (-l "$kimage.old" || ! -e "$kimage.old" ) { + rename("$kimage.$$", "$kimage.old"); + warn "mv $kimage.$$ $kimage.old" if $DEBUG; + } + else { + warn "$kimage.old is not a symlink, not clobbering\n"; + warn "rm $kimage.$$"; + unlink "$kimage.$$" if $DEBUG; + } +} + +# This routine handles a request to do symlinks, but there is no +# symlink file already there. Either we are supposed to use copy, or we are +# installing on a pristine system, or the user does not want symbolic links at +# all. We use a configuration file to tell the last two cases apart, creating +# a config file if needed. +sub handle_missing_link { + my $kimage = $_[0]; # Name of the symbolic link + my $image_dest = $_[1]; # The directory the links goes into + my $image_name = $_[2]; + my $src_dir = $_[3]; + warn "handle_missing_link: kimage=$kimage, image_dest=$image_dest\n" . + "\t image_name=$image_name, src_dir=$src_dir" if $DEBUG; + + if ($no_symlink) { + warn "cp -a --backup=t $realimageloc$image_name $kimage" if $DEBUG; + my $ret = system("cp -a --backup=t " . $realimageloc . + "$image_name " . " $kimage"); + if ($ret) { + die("Failed to copy " . $realimageloc . "$image_name to " + . $image_dest . "$kimage .\n"); + } + } + elsif ($reverse_symlink) { + warn "mv -f $realimageloc$image_name $kimage" if $DEBUG; + my $ret = system("mv -f " . $realimageloc . "$image_name " + . "$kimage"); + if ($ret) { + die("Failed to move " . $realimageloc . "$image_name to " + . $image_dest . "$kimage .\n"); + } + } + else { + if (! $have_conffile) { + my $ret; + my $answer=''; + $do_symlink = "Yes"; + + if (open(CONF, ">$CONF_LOC")) { + print CONF "# Kernel Image management overrides\n"; + print CONF "# See kernel-img.conf(5) for details\n"; + if ($loader =~ /palo/i) { + print CONF "link_in_boot = Yes\n"; + print CONF "do_symlinks = Yes\n"; + print CONF "relative_links = Yes\n"; + print CONF "do_bootloader = No\n"; + } else { + print CONF "do_symlinks = $do_symlink\n"; + } + close CONF; + } + $have_conffile = "Yes"; + } + } + + if (! $no_symlink && $do_symlink =~ /Yes/i) { + my $Old = $realimageloc; + my $New = $image_dest; + my $Name = "$image_name"; + my $Link_Dest = "$kimage"; + + if ($reverse_symlink) { + $Old = $image_dest; + $New = $realimageloc; + $Name = "$kimage"; + $Link_Dest = $realimageloc . "$image_name"; + } + if (test_relative ('Old Dir' => $Old, + 'New Dir' => $New, + 'Test File' => $Name)) { + $Old =~ s|^/*||o; + } + # Special case is they are in the same dir + my $rel_path = spath('Old' => "$Old", 'New' => "$New" ); + $Old ="" if $rel_path =~ m/^\s*$/o; + + symlink($Old . "$Name", "$Link_Dest") || + die("Failed to symbolic-link ${Old}$Name to $Link_Dest: $!\n"); + warn "ln -s ${Old}$Name $Link_Dest" if $DEBUG; + + } +} + +# This routine handles the rest of the cases, where the user has requested +# non-traditional handling, like using cp, or reverse symlinks, or hard links. +sub handle_non_symlinks { + my $kimage = $_[0]; # Name of the symbolic link + my $image_dest = $_[1]; # The directory the links goes into + my $image_name = $_[2]; + my $src_dir = $_[3]; + warn "handle_non_link: kimage=$kimage, image_dest=$image_dest\n" . + "\t image_name=$image_name, src_dir=$src_dir" if $DEBUG; + + # Save the current image. We do this in all four cases + rename("$kimage", "$kimage.$$") || + die "failed to move " . $image_dest . "$kimage:$!"; + warn "mv $kimage $kimage.$$" if $DEBUG; + + ##,#### + # case One + #`#### + if ($no_symlink) { + # Maybe /$image_dest is on a dos system? + warn "cp -a --backup=t $realimageloc$image_name $kimage" if $DEBUG; + my $ret = system("cp -a --backup=t " . $realimageloc + . "$image_name " . "$kimage"); + if ($ret) { + if (-e "$kimage.$$") { + rename("$kimage.$$", "$kimage"); + warn "mv $kimage.$$ $kimage" if $DEBUG; + } + die("Failed to copy " . $realimageloc . "$image_name to " + . $image_dest . "$kimage .\n"); + } + } + ##,#### + # case Two + #`#### + elsif ($reverse_symlink) { # Maybe /$image_dest is on a dos system? + warn "mv -f $realimageloc$image_name $kimage" if $DEBUG; + my $ret = system("mv -f " . $realimageloc . "$image_name " + . $image_dest . "$kimage"); + if ($ret) { + if (-e "$kimage.$$") { + rename("$kimage.$$", "$kimage"); + warn "mv $kimage.$$ $kimage" if $DEBUG; + } + die("Failed to move " . $realimageloc . "$image_name to " + . $image_dest . "$kimage .\n"); + } + my $Old = $image_dest; + if (test_relative ('Old Dir' => $Old, 'New Dir' => $realimageloc, + 'Test File' => "$kimage")) { + $Old =~ s|^/*||o; + } + # Special case is they are in the same dir + my $rel_path = spath('Old' => "$Old", 'New' => "$realimageloc" ); + $Old ="" if $rel_path =~ m/^\s*$/o; + + if ($use_hard_links =~ m/YES/i) { + warn "ln " . $Old . "$kimage " . $realimageloc . "$image_name" if $DEBUG; + if (! link($Old . "$kimage", $realimageloc . "$image_name")) { + warn "Could not link " . $image_dest . + "$kimage to $image_name :$!"; + } + } + else { + warn "ln -s " . $Old . "$kimage " . $realimageloc . "$image_name" if $DEBUG; + if (! symlink($Old . "$kimage", $realimageloc . "$image_name")) { + warn "Could not symlink " . $image_dest . + "$kimage to $image_name :$!"; + } + } + } + ##,#### + # case Three + #`#### + elsif ($use_hard_links =~ m/YES/i ) { + # Ok then. this ought to be a hard link, and hence fair game + # don't clobber $kimage.old quite yet + my $Old = $realimageloc; + my $cwd; + chomp($cwd=`pwd`); + if (test_relative ('Old Dir' => $Old, 'New Dir' => $cwd, + 'Test File' => "$image_name")) { + $Old =~ s|^/*||o; + } + # Special case is they are in the same dir + my $rel_path = spath('Old' => "$Old", 'New' => "$cwd" ); + $Old ="" if $rel_path =~ m/^\s*$/o; + + warn "ln " . $Old . "$image_name " . "$kimage" if $DEBUG; + if (! link($Old . "$image_name", "$kimage")) { + warn "mv $kimage.$$ $kimage" if $DEBUG; + rename("$kimage.$$", "$kimage"); + die("Failed to link " . $realimageloc . "$image_name to " + . $image_dest . "$kimage .\n"); + } + } + ##,#### + # case Four + #`#### + else { + # We just use cp + warn "cp -a --backup=t $realimageloc$image_name $kimage" if $DEBUG; + my $ret = system("cp -a --backup=t " . $realimageloc + . "$image_name " . "$kimage"); + if ($ret) { + if (-e "$kimage.$$") { + warn "mv $kimage.$$ $kimage" if $DEBUG; + rename("$kimage.$$", "$kimage"); + } + die("Failed to copy " . $realimageloc . "$image_name to " + . $image_dest . "$kimage .\n"); + } + } + # Ok, now we may clobber the previous .old file + warn "mv $kimage.$$ $kimage.old if -e $kimage.$$" if $DEBUG; + rename("$kimage.$$", "$kimage.old") if -e "$kimage.$$"; +} + +# This routine is responsible for setting up the symbolic links +# So, the actual kernel image lives in +# $realimageloc/$image_name (/boot/vmlinuz-2.6.12). +# This routine creates symbolic links in $image_dest/$kimage (/vmlinuz) +sub image_magic { + my $kimage = $_[0]; # Name of the symbolic link + my $image_dest = $_[1]; # The directory the links goes into + my $image_name = "$kimage-$version"; + my $src_dir = $realimageloc; + warn "image_magic: kimage=$kimage, image_dest=$image_dest\n" . + "\t image_name=$image_name, src_dir=$src_dir" if $DEBUG; + + # Well, in any case, if the destination (the symlink we are trying + # to create) is a directory, we should do nothing, except throw a + # diagnostic. + if (-d "$kimage" ) { + die ("Hmm. $kimage is a directory, which I did not expect. I am\n" . + "trying to create a symbolic link with that name linked to \n" . + "$image_dest . Since a directory exists here, my assumptions \n" . + "are way off, and I am aborting.\n" ); + exit (3); + } + + if ($move_image) { # Maybe $image_dest is in on dos, or something? + # source dir, link name, dest dir + really_move_image( $realimageloc, $image_name, $image_dest); + really_reverse_link($realimageloc, $image_name, $image_dest) + if $reverse_symlink; + return; + } + + if (-l "$kimage") { # There is a symbolic link + warn "DEBUG: There is a symlink for $kimage\n" if $DEBUG; + my $force_move = move_p($kimage, $image_dest, $image_name, $src_dir); + + if ($force_move) { + really_move_link($kimage, $image_dest, $image_name, $src_dir); + } + } + elsif (! -e "$kimage") { + # Hmm. Pristine system? How can that be? Installing from scratch? + # Or maybe the user does not want a symbolic link here. + # Possibly they do not want a link here. (we should be in / + # here[$image_dest, really] + handle_missing_link($kimage, $image_dest, $image_name, $src_dir); + } + elsif (-e "$kimage" ) { + # OK, $kimage exists -- but is not a link + handle_non_symlinks($kimage, $image_dest, $image_name, $src_dir); + } +} + +###################################################################### +###################################################################### +###################################################################### +###################################################################### + +# We may not have any modules installed +if ( -d "$modules_base/$version" ) { + print STDERR "Running depmod.\n"; + my $ret = system("depmod -a $version"); + if ($ret) { + print STDERR "Failed to run depmod\n"; + exit(1); + } +} + + + +sub find_initrd_tool { + my $hostversion = shift; + my $version = shift; + print STDERR "Finding valid ramdisk creators.\n"; + my @ramdisks = + grep { + my $args = + "$_ " . + "--supported-host-version=$hostversion " . + "--supported-target-version=$version " . + "1>/dev/null 2>&1" + ; + system($args) == 0; + } + split (/[:,\s]+/, $ramdisk); +} + +# The initrd symlink should probably be in the same dir that the +# symlinks are in +if ($initrd) { + my $success = 0; + + # Update-initramfs is called slightly different than mkinitrd and + # mkinitramfs. XXX It should really be made compatible with this stuff + # some how. + my $upgrading = 1; + if (! defined $ARGV[1] || ! $ARGV[1] || $ARGV[1] =~ m/<unknown>/og) { + $upgrading = 0; + } + my $ret = system("$ramdisk " . ($upgrading ? "-u" : "-c") . " -k " . $version . " >&2"); + $success = 1 unless $ret; + die "Failed to create initrd image.\n" unless $success; + if (! defined $ARGV[1] || ! $ARGV[1] || $ARGV[1] =~ m/<unknown>/og) { + image_magic("initrd.img", $image_dest); + } + else { + if (! -e "initrd.img") { + handle_missing_link("initrd.img", $image_dest, "initrd.img-$version", + $realimageloc); + } + else { + print STDERR + "Not updating initrd symbolic links since we are being updated/reinstalled \n"; + print STDERR + "($ARGV[1] was configured last, according to dpkg)\n"; + } + } + + if ($initrd && -l "initrd" ) { + unlink "initrd"; + } + + if ($initrd && -l "$image_dir/initrd" && ! $link_in_boot) { + unlink "$image_dir/initrd"; + } +} +else { # Not making an initrd emage + if (-l "initrd.img") { + # Ooh, last image was an initrd image? in any case, we should move it. + my $target = readlink "initrd.img"; + my $real_target = ''; + $real_target = abs_path($target) if defined ($target); + + if (!defined($target) || ! -f "$real_target") { + # Eh. dangling link. can safely be removed. + unlink("initrd.img"); + } else { + if (-l "initrd.img.old" || ! -e "initrd.img.old" ) { + rename("initrd.img", "initrd.img.old"); + } else { + warn "initrd.img.old is not a symlink, not clobbering\n"; + unlink("initrd.img"); + } + } + } +} + +# Warn of a reboot +if (-x $notifier) { + system($notifier); +} + +# Let programs know not to hibernate if the kernel that would be used for +# resume-from-hibernate is likely to differ from the currently running kernel. +system("mountpoint -q /var/run"); +if ($? eq 0) { + system("touch /var/run/do-not-hibernate"); +} + +# Only change the symlinks if we are not being upgraded +if (! defined $ARGV[1] || ! $ARGV[1] || $ARGV[1] =~ m/<unknown>/og) { + image_magic($kimage, $image_dest); +} +else { + if (! -e "$kimage") { + handle_missing_link($kimage, $image_dest, "$kimage-$version", + $realimageloc); + } + else { + print STDERR + "Not updating image symbolic links since we are being updated/reinstalled \n"; + print STDERR + "($ARGV[1] was configured last, according to dpkg)\n"; + } +} + +# We used to have System.* files in / +if (-e "/System.map" || -e "/System.old") { + unlink '/System.map' if -e '/System.map'; + unlink '/System.old' if -e '/System.old'; +} + +# creating some info about kernel and initrd +if ($DEBUG) { + my $ksize=sprintf("%.0f",(stat($realimageloc . + "$kimage-$version"))[7]/1024)."kB"; + my $initrdsize=''; + if ($initrd) { + $initrdsize=sprintf("%.0f",(stat($realimageloc . + "initrd.img-$version"))[7]/1024)."kB"; + } + + print STDERR <<"EOMSG"; +A new kernel image has been installed at $realimageloc$kimage-$version + (Size: $ksize) + +Symbolic links, unless otherwise specified, can be found in $image_dest + +EOMSG + ; + + if ($initrd) { + print STDERR <<"EOMSGA"; + + Initial rootdisk image: ${realimageloc}initrd.img-$version (Size: $initrdsize) +EOMSGA + ; + } +} + +# set the env var stem +$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 ($postinst_hook) { + &run_hook("postinst", $postinst_hook); +} + +if (-d "/etc/kernel/postinst.d") { + print STDERR "Examining /etc/kernel/postinst.d.\n"; + system ("run-parts --verbose --exit-on-error --arg=$version " . + "--arg=$realimageloc$kimage-$version " . + "/etc/kernel/postinst.d") && + die "Failed to process /etc/kernel/postinst.d"; +} + +if (-d "/etc/kernel/postinst.d/$version") { + print STDERR "Examining /etc/kernel/postinst.d/$version.\n"; + system ("run-parts --verbose --exit-on-error --arg=$version " . + "--arg=$realimageloc$kimage-$version " . + "/etc/kernel/postinst.d/$version") && + die "Failed to process /etc/kernel/postinst.d/$version"; +} + +LOADER: { + last unless $do_boot_enable; # Exit if explicitly asked to + + last if $loader =~ /silo/i; # SILO does not have to be executed. + last if $loader =~ /yaboot/i; # yaboot does not have to be executed. + last if $loader =~ /milo/i; # MILO does not have to be executed. + last if $loader =~ /nettrom/i; # NETTROM does not have to be executed. + last if $loader =~ /arcboot/i; # ARCBOOT does not have to be executed. + last if $loader =~ /delo/i; # DELO does not have to be executed. + last if $loader =~ /quik/i; # maintainer asked quik invocation to be ignored + + last unless $loaderloc; + last unless -x $loaderloc; + last unless $do_bootloader; + + if (-T "/etc/$loader.conf") { + # Trust and use the existing lilo.conf. + print STDERR "You already have a $Loader configuration in /etc/$loader.conf\n"; + my $ret = &run_lilo(); + exit $ret if $ret; + } +} + + +sub run_lilo (){ + my $ret; + # Try and figure out if the user really wants lilo to be run -- + # since the default is to run the boot laoder, which is ! grub -- but + # the user may be using grub now, and not changed the default. + + # So, if the user has explicitly asked for the loader to be run, or + # if there is no postinst hook, or if there is no grub installed -- + # we are OK. Or else, we ask. + if ($explicit_do_loader || (! ($postinst_hook && -x '/usr/sbin/grub'))) { + print STDERR "Running boot loader as requested\n"; + } else { + print STDERR "Ok, not running $loader\n"; + } + if ($loader =~ /^lilo/io or $loader =~ /vmelilo/io) { + print STDERR "Testing $loader.conf ... \n"; + unlink $temp_file_name; # security + $ret = system("$loaderloc -t >$temp_file_name 2>&1"); + if ($ret) { + print STDERR "Boot loader test failed\n"; + return $ret; + } + unlink "$temp_file_name"; + print STDERR "Testing successful.\n"; + print STDERR "Installing the "; + print STDERR "partition " if $loader =~ /^lilo/io; + print STDERR "boot sector... \n"; + } + + print STDERR "Running $loaderloc ... \n"; + if ($loader =~ /^elilo/io) { + $ret = system("$loaderloc 2>&1 | tee $temp_file_name"); + } else { + $ret = system("$loaderloc >$temp_file_name 2>&1"); + } + if ($ret) { + print STDERR "Boot loader failed to run\n"; + return $ret; + } + unlink $temp_file_name; + print STDERR "Installation successful.\n"; + return 0; +} + +exit 0; + +__END__ |