-#!/usr/bin/perl
-#
-# /usr/sbin/liloconfig -- configure lilo automatically using debconf
-#
-# Author: Bruce Perens <bruce@Pixar.com>
-# Bernd Eckenfels <ecki@debian.org>
-# Vincent Renardias <vincent@ldsol.com>
-# Peter Maydell <pmaydell@chiark.greenend.org.uk>
-# Russell Coker <russell@coker.com.au>
-# Andrés Roldán <aroldan@debian.org>
-# William Pitcock <nenolod@dereferenced.org>
-#
-# Maintainer: William Pitcock <nenolod@dereferenced.org>
-
-# Updated on 2008/07/26 -- William Pitcock <nenolod@dereferenced.org>
-# - Use large-memory by default, hoping that BIOSes now days aren't
-# so broken.
-#
-# Updated on 2008/06/16 -- William Pitcock <nenolod@sacredspiral.co.uk>
-# - Warn about images larger than 6.5MiB because some chipsets
-# cannot load them in real mode.
-#
-# Updated on 2006/08/27 -- Artur R. Czechowski <arturcz@hell.pl>
-# - Communication with user is handled via debconf
-#
-# Updated on 2004/07/31 -- Andrés Roldán <aroldan@debian.org>
-# - Added get_bitmap() to allow one choose the bitmap to use.
-#
-# Updated on 2003/12/20 -- Andrés Roldán <aroldan@debian.org>
-# - Modified get_images() to insert initrd= field when necessary.
-# See Bug#224368.
-#
-# Updated on 2003/10/24 -- Andrés Roldán <aroldan@debian.org>
-# - Now liloconfig will smartly get the installed kernel images
-# and put them in the configuration file.
-#
-# Updated on 2003/10/05 -- Andrés Roldán <aroldan@debian.org>
-# - Updated install= comments . See Bug#183471.
-# - Not using depecrated install=/boot/*b options.
-#
-# Updated on 2003/08/07 -- Andrés Roldán <aroldan@fluidsignal.com>
-# - bitmap= field will search bitmaps on /boot
-#
-# Updated on 2003/04/23 -- Andrés Roldán <aroldan@fluidsignal.com>
-# - added menu entry for sid and sarge from debian-bootscreen.
-#
-# Updated on 1999/01/24 -- Vincent Renardias <vincent@ldsol.com>
-# - never return 0 on error.
-# - updated the template to produce a more helpfull (commentwise)
-# resulting lilo.conf
-#
-# Updated on 1999/11/24 -- Peter Maydell <pmaydell@chiark.greenend.org.uk>
-# - added error checking of various system calls
-# - added $DEBUG switch and pulled lilo.conf and fstab filenames
-# out into config variables.
-# - turned on Perl's -w switch and use strict subs/refs
-# - now does examination of current situation up front, separated
-# from the logic of what we do in various situations.
- # - added check for special marker in /etc/fstab that indicates that we
- # are configuring the base filesystem and shouldn't actually do anything.
- #
- # Updated on 2000-01-23 -- Peter Maydell <pmaydell@chiark.greenend.org.uk>
- # - fixed a (harmless) warning produced if /etc/fstab had a blank line in it
- # - fixed a bug where partition number was not being pulled out of the
- # /dev/hda4 string correctly.
- # - added a paranoia check that the disk/device we get from fstab actually
- # exist in the filesystem.
- # - fixed flow-of-control problem where we simply weren't ever installing
- # MBR and making partition active.
- # - added & to some function calls, for consistency.
- # - changed all references to /usr/doc/lilo/ to /usr/share/doc/lilo/.
- # - added warning that the lilo.conf we produce does not suffice for
- # complicated situations.
- # - expanded some of the other prompts and explanatory text presented
- # to the user.
- # - added a 'ruler' to separate out questions
- # - questions no longer accept anything except RET as meaning 'go with
- # default answer'. [Previously, if the default answer was 'yes',
- # anything not beginning with Y or y would be interpreted as 'no'.
- # This is IMHO too lenient considering the consequences of getting
- # it wrong...]
- # - updated Maintainer, Author and Wishlist...
- #
- # Updated on 2000-01-25 -- Peter Maydell <pmaydell@chiark.greenend.org.uk>
- # - fixed important bug causing lilo not to install on RAID arrays.
- # (Bugs #56153,#56183,#56196)
- # - minor improvement to a regexp (no actual functional change) (Bug#56127)
- # - expanded cryptic 'iff' comment (Bug#56127)
- #
- # Updates on 2001-05-04 -- Russell Coker <russell@coker.com.au>
- # - more work on devfs root support
-
- # Wishlist:
- # This script is from Bruce's debian.postinst and need to be more
- # intelligent. It should be possible to install lilo in the MBR, too.
- # Support for systems which dual boot (esp. dual Linux/Windows) would
- # also be nice, but could be complicated to get right.
-
- ###use strict 'subs';
- ###use strict 'refs';
- #### use strict 'vars' falls over on all the global variables :->
-use Debconf::Client::ConfModule qw(:all);
-version('2.0');
-$|=1;
-
- fset("liloconfig/banner","seen","false");
- fset("liloconfig/use_current_lilo","seen","false");
- fset("liloconfig/wipe_old_liloconf","seen","false");
- fset("liloconfig/instruction","seen","false");
- fset("liloconfig/install_from_root_device","seen","false");
- fset("liloconfig/use_lba32","seen","false");
- fset("liloconfig/install_mbr","seen","false");
- fset("liloconfig/make_active_partition","seen","false");
- fset("liloconfig/select_bitmap","seen","false");
-
- # Set this to 1 to disable all commands that do things to the
- # hard disk (ie actually running lilo). Note that we still write
- # to $LILOCONF, so you should also tweak that to get a 'safe' test
- # environment.
- #$DEBUG=1;
-
- # Various files we access
- $LILOCONF='/etc/lilo.conf';
- $FSTAB='/etc/fstab';
-
- subst("liloconfig/liloconf_exists","liloconf",$LILOCONF);
- subst("liloconfig/lilo_warning","liloconf",$LILOCONF);
- subst("liloconfig/lilo_error","liloconf",$LILOCONF);
- subst("liloconfig/odd_fstab","liloconf",$LILOCONF);
- subst("liloconfig/instruction","liloconf",$LILOCONF);
-
- subst("liloconfig/fstab_broken","fstab",$FSTAB);
- subst("liloconfig/odd_fstab","fstab",$FSTAB);
-
- # Print a banner now, to give the user something to look at while
- # we ferret around in the fstab...
-
- settitle("liloconfig/maintitle");
- input("low","liloconfig/banner");
-
- # First we analyse the setup and set variables appropriately
- $fstab_broken = 1; # is there a valid /etc/fstab? Assume not and prove otherwise.
- $liloconf_exists = 0; # is there a preexisting lilo.conf with a non-commented out line?
- $liloconf_incompatible = 0; # does lilo.conf use options not valid for this version of lilo?
- $configuring_base = 0; # are we configuring the 'base' filesystem (special case)
- $odd_fstab = 0; # set if we don't understand the device in the fstab
- # We also set $device, $disk, $partition (assuming fstab_broken == 0)
-
- if (-f $FSTAB)
- {
- # Parse fstab for the root partition...
- open(FSTAB, "<$FSTAB") or die "liloconfig: couldn't open $FSTAB: $!\n";
- while (<FSTAB>)
- {
- # Check for a magic string which indicates that we are configuring
- # the base filesystem and not a real machine...
- $configuring_base = 1 if /^# UNCONFIGURED FSTAB FOR BASE SYSTEM/;
- next if /^#/; # ignore comment lines
- s/^[ \t]+//; # remove space or tab at begin of the line
- ($device,$filesystem) = split(/[ \t]+/);
- next unless defined $filesystem; # ignore empty lines too
- # Stop if we found the root device...
- if ($filesystem eq '/')
- {
- $fstab_broken = 0;
- last;
- }
- }
- close(FSTAB) or die "liloconfig: couldn't close $FSTAB: $!\n";
- }
-
- if (! $fstab_broken)
- {
- # Valid device/filesystem pair, parse them
- $disk = `/usr/sbin/lilo_find_mbr $device`;
- chomp($disk);
- $partition = $device;
- my $devfs = 0;
-
- # Paranoia check: there should be valid /dev/ nodes for these.
- # We could check for block-special-device-ness, but perhaps
- # some people have symlink forests in /dev/ ?
- # This check will fail on things like RAID arrays, where the
- # devices don't have names like /dev/hda4. In this case we can't
- # do simple autoconfiguration, but we still want to be able
- # to allow the user to install their own handrolled lilo.conf.
- $odd_fstab = 1 unless ($partition =~ /\d+$/ && -e $disk && -e $device);
- }
-
- # Check for an existing lilo.conf with some non-comment lines in it...
- system ("grep -qsv '^#' $LILOCONF");
- # Exit status is 0 iff lilo.conf exists and contains at least one non-comment line.
- if ($? == 0)
- {
- $liloconf_exists = 1;
- $liloconf_incompatible = &compatibility_check ();
- }
-
- ##########################################################
- # Boilerplate arrays used to produce an initial lilo.conf
- ##########################################################
-
- @header = (
- "# Generated by liloconfig\n",
- "\n",
- );
-
- @bootheader = (
- "# Specifies the boot device\n",
- );
-
- @rootheader = (
- "\n",
- "# Specifies the device that should be mounted as root.\n",
- "# If the special name CURRENT is used, the root device is set to the\n",
- "# device on which the root file system is currently mounted. If the root\n",
- "# has been changed with -r , the respective device is used. If the\n",
- "# variable ROOT is omitted, the root device setting contained in the\n",
- "# kernel image is used. It can be changed with the rdev program.\n"
- );
-
- @boilerplate1 = (
- "\n",
- "# Enables map compaction:\n",
- "# Tries to merge read requests for adjacent sectors into a single\n",
- "# read request. This drastically reduces load time and keeps the map\n",
- "# smaller. Using COMPACT is especially recommended when booting from a\n",
- "# floppy disk.\n",
- "# compact\n",
- "\n",
- "# Install the specified file as the new boot sector.\n",
- "# LILO supports built in boot sectory, you only need\n",
- "# to specify the type, choose one from 'text', 'menu' or 'bitmap'.\n",
- "# new: install=bmp old: install=/boot/boot-bmp.b\n",
- "# new: install=text old: install=/boot/boot-text.b\n",
- "# new: install=menu old: install=/boot/boot-menu.b or boot.b\n",
- "# default: 'menu' is default, unless you have a bitmap= line\n",
- "# Note: install=bmp must be used to see the bitmap menu.\n",
- "# install=menu\n",
- "install=bmp\n",
- "\n",
- "# Specifies the number of _tenths_ of a second LILO should\n",
- "# wait before booting the first image. LILO\n",
- "# doesn't wait if DELAY is omitted or if DELAY is set to zero.\n",
- "# delay=20\n",
- "\n",
- "# Prompt to use certaing image. If prompt is specified without timeout,\n",
- "# boot will not take place unless you hit RETURN\n",
- "prompt\n",
- "timeout=50\n",
- "\n",
- "# Enable large memory mode.\n",
- "large-memory\n",
- "\n",
- "# Specifies the location of the map file. If MAP is\n",
- "# omitted, a file /boot/map is used.\n",
- "map=/boot/map\n",
- "\n",
- "# Specifies the VGA text mode that should be selected when\n",
- "# booting. The following values are recognized (case is ignored):\n",
- "# NORMAL select normal 80x25 text mode.\n",
- "# EXTENDED select 80x50 text mode. The word EXTENDED can be\n",
- "# abbreviated to EXT.\n",
- "# ASK stop and ask for user input (at boot time).\n",
- "# <number> use the corresponding text mode. A list of available modes\n",
- "# can be obtained by booting with vga=ask and pressing [Enter].\n",
- "vga=normal\n",
- "\n",
- "# Defines non-standard parameters for the specified disk.\n",
- "#disk=/dev/sda\n",
- "#\tbios=0x80\n",
- "\n",
- "# If you are using removable USB drivers (with mass-storage)\n",
- "# you will need to tell LILO to not use these devices even\n",
- "# if defined in /etc/fstab and referenced in /proc/partitions.\n",
- "# Adjust these lines to your devices:\n",
- "#\n",
- "# disk=/dev/sda inaccessible\n",
- "# disk=/dev/sdb inaccessible\n",
- "\n"
- );
-
- @boilerplate2 = (
- "# If you have another OS on this machine (say DOS),\n",
- "# you can boot if by uncommenting the following lines\n",
- "# (Of course, change /dev/hda2 to wherever your DOS partition is.)\n",
- "# other=/dev/hda2\n",
- "# label=\"MS Windows\"\n",
- "\n"
- );
-
- ####################
- # Utility functions
- ####################
-
-sub get_bitmap
-{
- input("high","liloconfig/select_bitmap");
- go();
- ($ret,$val) = get("liloconfig/select_bitmap");
-
- # each line with: [ filename,bmp-color,bmp-table,bmp-timer ]
- @bitmaps = (
- [ "/boot/tuxlogo.bmp","6,9,0;15,9,0","59,5;1,23,","66,28;6,8,0" ],
- [ "/boot/inside.bmp","14,11,,15,9,0","21,284p,2,7,175p,4","73,29,12,8,0" ],
- [ "/boot/debian.bmp","10,0,,7,0,","16,12,1,12,16","34,28,13,0," ],
- [ "/boot/debian-de.bmp","10,0,,7,0,","16,12,1,12,16","34,28,13,0," ],
- [ "/boot/debianlilo.bmp","1,,0,9,,0","106p,144p,2,9,144p","514p,144p,6,8,0" ]
- [ "/boot/coffee.bmp","12,,11,15,,8","385p,100p,1,10","38,2,13,1" ],
- [ "/boot/onlyblue.bmp","7,,0,15,,0","3,4,4,26,19,1","37,2,7,4,0" ],
- );
-
- $counter = 0;
-
- for $ref (@bitmaps)
- {
- last if ($val eq @$ref[0]);
- $counter++;
- }
-
- $ans = $counter;
-
- push (@bitmapconf, "\n# Bitmap configuration for $bitmaps[$ans][0]\n");
- push (@bitmapconf, "bitmap=$bitmaps[$ans][0]\n");
- push (@bitmapconf, "bmp-colors=$bitmaps[$ans][1]\n");
- push (@bitmapconf, "bmp-table=$bitmaps[$ans][2]\n");
- push (@bitmapconf, "bmp-timer=$bitmaps[$ans][3]\n");
-
- return @bitmapconf;
-}
-
-sub get_images
-{
- my @images = ();
-
- $count = 0;
-
- print STDERR "Searching for installed kernels and updating image entries ...\n";
-
- push (@images, "# These images were automagically added. You may need to edit something.\n\n");
-
- # Ignore that /vmlinuz link since it can surely be poiting to
- # some /boot/vmlinuz* file
- if (-e "/vmlinuz" && ! -l "/vmlinuz")
- {
- push (@images, "image=/vmlinuz\n");
- push (@images, "\tlabel=\"Linux\"\n");
- if (-e "/initrd.img")
- {
- push (@images, "\tinitrd=/initrd.img\n");
+#!/usr/bin/perl -w
+
+# liloconfig - creating a new lilo.conf file
+#
+# Copyright 2011 Joachim Wiedorn <ad_debian@joonet.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+#---- some modules
+use strict;
+use warnings;
+use Getopt::Std;
+use Pod::Usage;
+use File::Copy;
+
+
+#---- global variables
+my $prog = $0;
+$prog =~ s#.*/##;
+my $version = "0.1";
+
+#---- parameter check
+# h: help, v: verbose, f: force
+our $opt_h = 0;
+our $opt_v = 0;
+our $opt_f = 0;
+getopts('hvf');
+# define perldoc usage
+pod2usage(1) if $opt_h;
+
+#---- other variables
+our $liloconf = "/etc/lilo.conf";
+our $conftmp_1 = "/tmp/lilotmp1";
+our $conftmp_2 = "/tmp/lilotmp2";
+our $liloconfold = $liloconf . ".old";
+our $liloconfnew = $liloconf . ".new";
+our $fstabconf = "/etc/fstab";
+
+our $idpath = "/dev/disk/by-id";
+our $uuidpath = "/dev/disk/by-uuid";
+our $lblpath = "/dev/disk/by-label";
+our $template = "/usr/share/doc/lilo/examples/lilo.example.conf.gz";
+
+our $rootpart; # found root part
+our $root_dev; # /dev/hdX9, /dev/sdX9, /dev/md/*
+our $root_id; # UUID, LABEL, ID
+our $boot_dev; # /dev/hdX, /dev/sdX, /dev/md
+our $boot_id; # DISK-ID
+
+#-------------------- main program --------------------
+
+sub main {
+
+ my $exit = 0;
+
+ if (@ARGV == 1) {
+ $liloconf = "$ARGV[0]";
+ $liloconfold = $liloconf . ".old";
+ $liloconfnew = $liloconf . ".new";
}
- push (@images, "\tread-only\n");
- push (@images, "\n");
- }
-
- # Ignore that /boot/vmlinuz link as well since it can surely be
- # poiting to some /boot/vmlinuz* file
- if (-e "/boot/vmlinuz" && ! -l "/boot/vmlinuz")
- {
- push (@images, "image=/boot/vmlinuz\n");
- push (@images, "\tlabel=\"Linux 1\"\n");
- if (-e "/boot/initrd.img")
- {
- push (@images, "\tinitrd=/boot/initrd.img\n");
- }
- push (@images, "\tread-only\n");
- push (@images, "\n");
- }
-
- foreach $image (`/bin/ls /boot/vmlinuz*`)
- {
- chomp $image;
-
- my $version = "";
- my $complement = "";
-
- if ($image =~ /vmlinuz-(\d+\.\d+\.\d+)-(.+)/)
- {
- $version = $1;
- $complement = $2;
-
- $label = "Lin " . $version . "img" . $count;
- }
- elsif ($image =~ /vmlinuz-(\d+\.\d+\.\d+)$/)
- {
- $version = $1;
-
- $label = "Lin " . $version . "img" . $count;
+ if (-f $liloconf and not $opt_f) {
+ print "$prog: $liloconf already exist! Please use '-f' for overwriting.\n";
+ $exit = 1;
}
- else
- {
- $label = "Lin " . "img" . $count;
- }
+ else {
+ $exit = create_lilo_conf()
+ }
+ return $exit;
+}
+
+#-------------------- subroutines --------------------
+
+sub create_lilo_conf {
- push (@images, "image=$image\n");
- push (@images, "\tlabel=\"$label\"\n");
+ my $found = 0;
+ my $exit = 1;
+
+ # search for root device in fstab and convert it
+ $found = detect_root_device();
+
+ # convert root device to boot device
+ if ($found) { $found = convert_boot_device(); }
+
+ # finally write new lilo.conf file
+ if ($found) { $exit = write_lilo_conf(); }
+
+ return $exit;
+}
+
+sub detect_root_device {
- if (-e "/boot/initrd.img-$version-$complement")
- {
- push (@images, "\tinitrd=/boot/initrd.img-$version-$complement\n");
- }
- elsif (-e "/boot/initrd.img-$version")
- {
- push (@images, "\tinitrd=/boot/initrd.img-$version\n");
- }
+ # read fstab and find root device;
+ my $found = read_fstab();
- push (@images, "\tread-only\n");
- push (@images, "\n");
+ # identify root device: root_dev and root_id
+ if ($found) { $found = convert_root_device(); }
- $count++;
- }
-
- if (-e "/boot/memtest86.bin")
- {
- push (@images, "image=/boot/memtest86.bin\n");
- push (@images, "\tlabel=\"Memory Test\"\n");
- push (@images, "\tread-only\n");
- push (@images, "\n");
- }
-
- if (-e "/boot/memtest86+.bin")
- {
- push (@images, "image=/boot/memtest86+.bin\n");
- push (@images, "\tlabel=\"Memory Test+\"\n");
- push (@images, "\tread-only\n");
- push (@images, "\n");
- }
-
- return @images;
+ return $found;
}
-sub asky
-{
- do
- {
- print STDERR @_,"? [Yes] ";
- $answer=<STDIN>;
- }
- while ($answer ne "\n" && !($answer =~ /^[YyNn].*/));
- &ruler ();
- return ( !($answer =~ /^[nN].*/) );
-}
+sub read_fstab {
+
+ my $root_part;
+ my $mountpoint;
+ my $broken_fstab = 1;
+ my $base_fstab = 0;
+ my $found = 1;
+
+ # check fstab for root device
+ if (-f $fstabconf) {
+ # Parsing fstab for the root partition
+ open(FSTAB, "<$fstabconf") or die "$prog: couldn't open $fstabconf: $!\n";
+
+ while (<FSTAB>) {
+ # Search magic string which indicates a base filesystem
+ $base_fstab = 1 if /^# UNCONFIGURED FSTAB FOR BASE SYSTEM/;
+ next if /^#/; # ignore comment lines
+
+ s/^[ \t]+//; # remove space or tab at begin of the line
+ ($root_part,$mountpoint) = split(/[ \t]+/);
+ next unless defined $mountpoint; # ignore empty lines too
+
+ # stop if we found the root device...
+ if ($mountpoint eq '/') {
+ $broken_fstab = 0;
+ last;
+ }
+ }
+ close(FSTAB) or die "$prog: couldn't close $fstabconf: $!\n";
+ }
-sub askn
-{
- do
- {
- print STDERR @_,"? [No] ";
- $answer=<STDIN>;
- }
- while ($answer ne "\n" && !($answer =~ /^[YyNn].*/));
- &ruler ();
- return ( $answer =~ /^[yY].*/ );
-}
+ if ($base_fstab) {
+ print "E: It seems you want configure the base filesystem \n" .
+ "and I'm therefore simply going to exit successfully \n" .
+ "without trying to actually configure LILO properly. \n";
+ $found = 0;
+ }
+ if ($broken_fstab) {
+ print "E: It seems the file /etc/fstab is not properly \n" .
+ "configured: no root partition '/' found! \n";
+ $found = 0;
+ }
+ # save the found root device
+ $rootpart = $root_part;
-sub compatibility_check
-{
- # Check a lilo.conf for options which are not compatible
- # with the current version of lilo, and return 1 if any
- # incompatible usages are found.
- # This currently just checks for use of the any_* loaders.
- system ("egrep '^[^#]*any_' $LILOCONF");
- return 1 if ($? == 0);
- return 0;
+ return $found;
}
-sub safe_system($)
-{
- # Works like system(), but just echoes the command that would
- # be run if $DEBUG is 1.
- if ($DEBUG) {
- print STDERR "[Would have run: ", join(' ', @_), "]\n";
- $? = 0;
- }
- else
- {
- system($_[0].">&2");
- }
+sub convert_root_device {
+
+ my $found = 1;
+ my $root_disk = '';
+ my $root_link;
+ # global variables: $root_dev, $root_id
+
+ if ($rootpart =~ /\/dev\//) {
+ $root_disk = $rootpart;
+
+ if (-b $root_disk) {
+ $root_dev = $root_disk;
+ if($opt_v) { print "Convert root option $root_disk into UUID\n"; }
+ $root_id = find_id_link($root_disk,$uuidpath);
+
+ if (not -l "$uuidpath/$root_id") {
+ if($opt_v) { print "W: could not find UUID for $root_disk!\n"; }
+ ## than we want use root_dev in lilo.conf
+ #$found = 0;
+ }
+ else {
+ # finally add uuid label
+ $root_id = "UUID=" . $root_id;
+ }
+ }
+ else {
+ if($opt_v) { print "E: cannot check $root_disk: device does not exist!\n"; }
+ $found = 0;
+ }
+ }
+ elsif ($rootpart =~ /^UUID/ or $rootpart =~ /^LABEL/) {
+ $root_link = $rootpart;
+ $root_link =~ s{\"}{}g;
+ $root_link =~ s{^LABEL=}{/dev/disk/by-label/};
+ $root_link =~ s{^UUID=}{/dev/disk/by-uuid/};
+
+ if (-l $root_link) {
+ $root_id = $rootpart;
+ $root_disk = readlink($root_link);
+ $root_disk =~ s{\.\./\.\./}{/dev/};
+
+ if (-b $root_disk) { $root_dev = $root_disk; }
+ else {
+ if($opt_v) { print "E: cannot check $root_link: link does not exist!\n"; }
+ $found = 0;
+ }
+ }
+ else {
+ print "E: cannot check $root_link: link does not exist!\n";
+ $found = 0;
+ }
+ }
+ else {
+ print "E: cannot use uncommon $rootpart found as root device!\n";
+ $found = 0;
+ }
+
+ return $found;
}
-#####################################
-# Actual work is done below here...
-#####################################
-
-# Debian's 'base' filesystem is a special case -- it's prebuilt
-# by installing and configuring packages into a subdirectory,
-# which is then made into a tarball, which is then used to
-# make the initial filesystem for a fresh Debian install.
-# Thus we can't actually run LILO now, because we know nothing
-# of the disk layout. That will be done as part of the install
-# process.
-if ($configuring_base)
-{
- input("high","liloconfig/configuring_base");
- go();
-
-exit(0);
+sub find_id_link {
+
+ my $olddev = $_[0];
+ my $path_id = $_[1];
+ my @sellinks;
+ my $_idlink;
+ my $_actlink;
+ my $newdevid = '';
+
+ opendir(MYDH, "$path_id") or die("cannot open $path_id: $! \n");
+ @sellinks = grep(!/\-part\d\d?$/, grep(!/^\.\.?$/, readdir(MYDH)));
+ @sellinks = sort(@sellinks);
+ closedir(MYDH);
+
+ foreach $_idlink (@sellinks) {
+ chomp $_idlink;
+ if(not $_idlink =~ /^usb/ and length($_idlink) > 10) {
+ $_actlink = readlink("$path_id/$_idlink");
+ $_actlink =~ s{\.\./\.\./}{/dev/};
+ if($opt_v) { print "** try: $_actlink => $_idlink \n"; }
+
+ # stop if we find the right link...
+ if($_actlink eq $olddev) {
+ $newdevid = $_idlink;
+ if($opt_v) { print "** convert: $_actlink => $path_id/$_idlink \n\n"; }
+ last;
+ }
+ }
+ }
+
+ if(not $newdevid) {
+ if($opt_v) { print "W: $olddev not converted: link not useful\n\n"; }
+ }
+
+ return ($newdevid);
}
-if ($liloconf_exists)
-{
- # Trust and use the existing lilo.conf.
- # FIX: If the current lilo.conf installs a master boot record, ask
- # to edit it to a partition boot record and install the master boot
- # record to chain to that.
-
- input("high","liloconfig/liloconf_exists");
- go();
-
- if ($liloconf_incompatible)
- {
- input("high","liloconfig/liloconf_incompatible");
- go();
- exit(1);
- }
-
- set("liloconfig/use_current_lilo","true");
- input("high","liloconfig/use_current_lilo");
- go();
- ($ret,$val)=get("liloconfig/use_current_lilo");
- if ($val eq "true")
- {
- input("high","liloconfig/lilo_warning");
- go();
- stop();
- &safe_system("/sbin/lilo -v");
- if ( $? == 0 )
- {
- exit(0);
+sub convert_boot_device {
+
+ my $found = 1;
+ my $boot_disk = '';
+ my $boot_link;
+ # global variables: $boot_dev, $boot_id
+
+ if (-b $root_dev) {
+ if ($root_dev =~ /\/dev\/md/) {
+ # search if the found partition is a raid volume
+ $boot_disk = check_raid($root_dev);
+ }
+ else {
+ # find the right block device name
+ $boot_disk = $root_dev;
+ $boot_disk =~ s/\d+$//;
+ }
+
+ if (-b $boot_disk) {
+ # set global variable boot_dev
+ $boot_dev = $boot_disk;
+ }
+ else {
+ print "E: boot device $boot_disk does not exist! \n";
+ $found = 0;
+ }
}
- input("high","liloconfig/lilo_error");
- go();
- exit(1);
- }
- else
- {
- set("liloconfig/wipe_old_liloconf","false");
- input("high","liloconfig/wipe_old_liloconf");
- go();
- ($ret,$val)=get("liloconfig/wipe_old_liloconf");
- if($val eq "true")
- {
- rename($LILOCONF, "$LILOCONF.OLD") or die "liloconfig: couldn't save old $LILOCONF as $LILOCONF.OLD: $!\n";
+ else {
+ print "E: could not find root device $root_dev! \n";
+ $found = 0;
}
- else
- {
- input("high","liloconfig/no_changes");
- go();
- exit(0);
+
+ if ($found) {
+ if($opt_v) { print "Convert boot option $boot_disk into DISK ID\n"; }
+ $boot_id = $idpath . "/" . find_id_link($boot_disk,$idpath);
+
+ if(not -l "$boot_id") {
+ if($opt_v) { print "W: could not find DISK ID for $boot_disk!\n"; }
+ ## not so important, than using boot_dev in lilo.conf
+ #$found = 0;
+ }
}
- }
-}
-# ASSERT: that we get here only if there is no lilo.conf or the user
-# asked us to wipe out the old one...
-# We make checks for broken fstabs and odd devices only if we are
-# going to try to write a lilo.conf for the user.
-if ($fstab_broken)
-{
- input("high","liloconfig/fstab_broken");
- go();
- exit(1);
+ return $found;
}
-if ($odd_fstab)
-{
- subst("liloconfig/odd_fstab","device",$device);
- input("high","liloconfig/odd_fstab");
- go();
- exit(1);
-}
+sub check_raid {
+
+ my $part = $_[0];
+ my $mdname;
+ my $md;
+ my @devices;
-input("high","liloconfig/instruction");
-go();
-
-# Flag so we can print STDERR a warning if we fell out the bottom of the config
-# without having run lilo at all.
-$lilorun = 0; $madeactive = 0;
-
-
-subst("liloconfig/install_from_root_device","device",$device);
-set("liloconfig/install_from_root_device","false");
-input("high","liloconfig/install_from_root_device");
-go();
-($ret,$val)=get("liloconfig/install_from_root_device");
-
-if($val eq "true")
-{
- umask(077);
- open(CONF, ">$LILOCONF") or die "Couldn't open $LILOCONF for writing: $!\n";
- if (!chown(0, 0, "$LILOCONF"))
- {
- die "Couldn't make $LILOCONF owned by root.root: $!\n" unless $DEBUG;
-
- # Following message is only shown if $DEBUG is set. So, I do not care
- # about templating it. Let it goes into STDERR. YMMV. <arturcz@hell.pl>
- print STDERR "Oops, couldn't make $LILOCONF owned by root.root. Since you\n";
- print STDERR "have set the DEBUG flag, I'm going to assume this is because\n";
- print STDERR "you're running liloconfig as a normal user, and continue anyway.\n";
- }
- print CONF @header;
- input("high","liloconfig/install_from_root_device");
- go();
- ($ret,$val)=get("liloconfig/install_from_root_device");
- if($val eq "true")
- {
- print CONF "# This allows booting from any partition on disks with more than 1024\n";
- print CONF "# cylinders.\n";
- print CONF "lba32\n";
- print CONF "\n";
- }
- @middle_boilerplate = &get_images;
- @bmp_boilerplate = &get_bitmap;
-
- print CONF @bootheader, "boot=".$device, "\n", @rootheader, "root=".$device, "\n", @bmp_boilerplate, @boilerplate1, @middle_boilerplate, @boilerplate2;
-
- close(CONF) or die "Couldn't close $LILOCONF: $!\n";
-
- &safe_system("/sbin/lilo");
- if ($? != 0)
- {
- input("high","liloconfig/lilo_error");
- go();
- exit(1);
- }
- $lilorun = 1;
+ # check if the found partition is a raid volume
+ if($part =~ /\/dev\/md/)
+ {
+ $mdname = $part;
+ $mdname =~ s/\/dev\///;
+ $mdname =~ s/\///;
+ $md = `grep $mdname /proc/mdstat`;
+
+ @devices = split(" ", $md);
+ @devices = sort(@devices[4..$#devices]);
+ $part = "/dev/" . $devices[0];
+ $part =~ s/\[.*$//;
+
+ }
+ return $part;
}
+sub write_lilo_conf {
+
+ my @status;
+ my $exit = copy_template();
-subst("liloconfig/install_mbr","disk",$disk);
-set("liloconfig/install_mbr","false");
-input("high","liloconfig/install_mbr");
-go();
-($ret,$val)=get("liloconfig/install_mbr");
-if($val eq "true")
-{
- &safe_system("install-mbr $disk");
- if ($? != 0)
- {
- input("high","liloconfig/mbr_error");
- go();
- exit(1);
- }
-}
+ if (not $exit) {
+ # create lilo.conf.new
+ write_boot_option();
+ write_image_config();
+ }
-subst("liloconfig/make_active_partition","device",$device);
-input("high","liloconfig/make_active_partition");
-go();
-($ret,$val)=get("liloconfig/install_mbr");
-if($val eq "true")
-{
- my $part_num = $partition;
- $part_num =~ s/^.*[a-z]//;
- print STDERR "Activating Partition $part_num on disk $disk.\n";
- &safe_system("/sbin/activate $disk $part_num");
- if ($? != 0)
- {
- input("high","liloconfig/activate_error");
- go();
- exit(1);
- }
- $madeactive = 1;
+ if (-f $liloconf and not -f $liloconfold) {
+ # move old lilo.conf to lilo.conf.old
+ @status = stat($liloconf);
+ move ($liloconf, $liloconfold) or die "Cannot rename file: $!\n";
+ utime ($status[9],$status[9],$liloconfold);
+ chmod (0600,$liloconfold);
+ print "Old file moved to: $liloconfold \n";
+ }
+ if (-f $liloconfnew) {
+ move ($liloconfnew, $liloconf) or die "Cannot move file: $!\n";
+ chmod (0600,$liloconf);
+ print "New file created as: $liloconf \n";
+ print "Now you must execute '/sbin/lilo' to " .
+ "activate this new configuation!\n\n";
+ }
+ else {
+ print "E: Cannot find temporary file $conftmp_1!\n";
+ $exit = 1;
+ }
+
+ return $exit;
}
-# Trailer: summarise what we've done
-print STDERR "\n";
-if (! $lilorun)
-{
- print STDERR "WARNING: you will have to set up LILO manually to ensure that\n";
- print STDERR " your system can be booted successfully!\n";
- print STDERR "You can rerun liloconfig at any time if you change your mind and\n";
- print STDERR "wish to use the default configuration.\n";
-}
-elsif ($madeactive)
-{
- # LILO was run and Linux partition made active
- print STDERR "LILO successfully configured; Linux will be booted by default.\n";
- print STDERR "If you installed the master boot record, you can boot a different\n";
- print STDERR "OS by holding down the shift key as the system boots, and then\n";
- print STDERR "pressing the key corresponding to the partition containing that\n";
- print STDERR "OS when you see the \"1234F:\" prompt.\n";
+sub copy_template {
+
+ my $endreached = 0;
+ my $exit = 0;
+
+ # copy template config
+ if (-f $template) {
+ system("gzip -d -c $template >$conftmp_1") if ($template =~ /\.gz$/);
+ system("cat $template >$conftmp_1") if ($template =~ /\.conf$/);
+
+ open(CONFTMP1, "<$conftmp_1") or die "$prog: couldn't open $conftmp_1: $!\n";
+ open(CONFTMP2, ">$conftmp_2") or die "$prog: couldn't open $conftmp_2: $!\n";
+
+ while (<CONFTMP1>) {
+ if (/first\ example/) {
+ $endreached = 1;
+ }
+ unless ($endreached) {
+ print CONFTMP2 $_;
+ }
+ }
+ close(CONFTMP1) or die "$prog: couldn't close $conftmp_1: $!\n";;
+ close(CONFTMP2) or die "$prog: couldn't close $conftmp_2: $!\n";;
+ }
+ else {
+ open(CONFTMP2, ">$conftmp_2") or die "$prog: couldn't open $conftmp_2: $!\n";
+ print CONFTMP2 "# /etc/lilo.conf
+
+### LILO global section ###
+
+#large-memory
+lba32
+boot = /dev/sda
+map = /boot/map
+install = menu
+menu-scheme = Wb:Yr:Wb:Wb
+prompt
+timeout = 100
+vga = normal
+#default = Linux
+
+### LILO per-image section ###
+
+";
+ close(CONFTMP2) or die "$prog: couldn't close $conftmp_2: $!\n";;
+ }
+
+ return $exit;
}
-else
-{
- my $part_num = $partition;
- $part_num =~ s/^.*[a-z]//;
- # LILO run, but Linux partition not made active
- print STDERR "OK. If you installed the master boot record, and the partition\n";
- print STDERR "boot record, you may boot Linux by holding down the shift key\n";
- print STDERR "as the system boots, and then pressing the $part_num key\n";
- print STDERR "when you see the \"1234F:\" prompt.\n";
+
+sub write_boot_option {
+
+ my $oldline = '';
+ my $newline = '';
+ my $ok = 0;
+
+ open(MYFH_NEW, "> $liloconfnew") or die "Cannot open file: $!";
+ open(MYFH_TMP, "< $conftmp_2") or die "Cannot read file: $!";
+
+ while (<MYFH_TMP>) {
+ # line read from MYFH_TMP
+ $oldline = $_;
+
+ if (/^boot/ and $ok == 0) {
+ if ($boot_id) {
+ $oldline = "#boot = $boot_dev\n";
+ $newline = "boot = $boot_id\n";
+ print MYFH_NEW $oldline;
+ if($opt_v) { print $oldline; }
+ }
+ else {
+ $oldline = "boot = $boot_dev\n";
+ }
+ print MYFH_NEW $newline;
+ if($opt_v) { print $newline; }
+ if($opt_v) { print "\n"; }
+
+ # convert only one time
+ $ok = 1;
+ }
+ else {
+ print MYFH_NEW $oldline;
+ }
+ }
+ close(MYFH_TMP);
+ close(MYFH_NEW);
}
-print STDERR "\n";
-print STDERR "For more information about LILO, see the documentation in\n";
-print STDERR "/usr/share/doc/lilo/. For details about the MBR, see also\n";
-print STDERR "/usr/share/doc/mbr/.\n";
+sub write_image_config {
+
+ my $image;
+ my $initrd;
+ my $nr;
+ my $nr2;
+
+ # search for kernel image files
+ my @vmlinuz = readpipe("/bin/ls -t -1 /boot/vmlinuz-2* 2>/dev/null");
+
+ # append to new lilo.conf
+ open(MYFH_NEW, ">> $liloconfnew") or die "Cannot open file: $!";
+
+ # create some line for each kernel image
+ $nr = 0;
+ foreach $image (@vmlinuz) {
+ # search for kernel initrd file
+ chomp $image;
+ $initrd = $image;
+ $initrd =~ s/vmlinuz/initrd\.img/;
+ $nr2 = $nr + 1;
+
+ print MYFH_NEW 'image = ' . $image . "\n";
+ if($opt_v) { print 'image = ' . $image . "\n"; }
+ if ($nr == 0) {
+ print MYFH_NEW "\t" . 'label = "Linux"' . "\n";
+ if($opt_v) { print "\t" . 'label = "Linux"' . "\n"; }
+ }
+ elsif ($nr == 1) {
+ print MYFH_NEW "\t" . 'label = "Linux Old"' . "\n";
+ if($opt_v) { print "\t" . 'label = "Linux Old"' . "\n"; }
+ }
+ if ($root_id) {
+ print MYFH_NEW "\t" . '#root = ' . $root_dev . "\n";
+ if($opt_v) { print "\t" . '#root = ' . $root_dev . "\n"; }
+ print MYFH_NEW "\t" . 'root = "' . $root_id . '"' . "\n";
+ if($opt_v) { print "\t" . 'root = "' . $root_id . '"' . "\n"; }
+ }
+ else {
+ print MYFH_NEW "\t" . 'root = ' . $root_dev . "\n";
+ if($opt_v) { print "\t" . 'root = ' . $root_dev . "\n"; }
+ }
+ print MYFH_NEW "\t" . 'read-only' . "\n";
+ if($opt_v) { print "\t" . 'read-only' . "\n"; }
+ print MYFH_NEW "#\t" . 'restricted' . "\n";
+ if($opt_v) { print "#\t" . 'restricted' . "\n"; }
+ print MYFH_NEW "#\t" . 'alias = ' . "$nr2" . "\n";
+ if($opt_v) { print "#\t" . 'alias = ' . "$nr2" . "\n"; }
+ print MYFH_NEW "#\t" . 'optional' . "\n";
+ if($opt_v) { print "#\t" . 'optional' . "\n"; }
+ if (-f $initrd) {
+ print MYFH_NEW "\t" . 'initrd = ' . $initrd . "\n";
+ if($opt_v) { print "\t" . 'initrd = ' . $initrd . "\n"; }
+ }
+ print MYFH_NEW "\n";
+ if($opt_v) { print "\n"; }
+
+ $nr++;
+ last if ($nr > 1);
+ }
+
+ close(MYFH_NEW);
+}
+
+
+main();
+
+__END__
+
+
+=head1 NAME
+
+liloconfig - create new lilo.conf file (with diskid and uuid)
+
+=head1 SYNOPSIS
+
+liloconfig [-h] [-v] [-f] [lilo.conf]
+
+=head1 DESCRIPTION
+
+liloconfig is an simple program for creating a new lilo.conf file.
+After creating the new configuration file you must execute '/sbin/lilo'.
+
+liloconfig use the lilo.example.conf file as template. In the final
+lilo.conf file you find many useful comments for custom changes.
+
+=head1 EXAMPLES
+
+Lines in the configuration file /etc/lilo.conf:
+
+ ### LILO global section ###
+
+ #large-memory
+ lba32
+ boot = /dev/sda
+ map = /boot/map
+ install = menu
+ menu-scheme = Wb:Yr:Wb:Wb
+ prompt
+ timeout = 100
+ vga = normal
+ #default = Linux
+
+ ### LILO per-image section ###
+
+ #boot = /dev/sda
+ boot = /dev/disk/by-id/ata-SAMSUNG_SV1604N_S01FJ10X999999
+
+ image = /boot/vmlinuz-2.6.32-5book-686
+ label = "Linux"
+ #root = /dev/sda1
+ root = "UUID=18843936-00f9-4df0-a373-000d05a5dd44"
+ read-only
+ # restricted
+ # alias = 1
+ # optional
+ initrd = /boot/initrd.img-2.6.32-5book-686
+
+ image = /boot/vmlinuz-2.6.32-5-686
+ label = "Linux Old"
+ #root = /dev/sda1
+ root = "UUID=18843936-00f9-4df0-a373-000d05a5dd44"
+ read-only
+ # restricted
+ # alias = 2
+ # optional
+ initrd = /boot/initrd.img-2.6.32-5-686
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-h>
+
+Print a brief help.
+
+=item B<-v>
+
+Print verbose messages.
+
+=item B<-f>
+
+Force overriding existing lilo.conf.
+
+=back
+
+=head1 AUTHOR
+
+B<liloconfig> was written by Joachim Wiedorn.
-exit(0);
+=cut
projects / rrq / maintain_lilo.git / blobdiff