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#!/usr/bin/perl
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# Copyright 2009-2010 Ben Hutchings
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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use strict;
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use warnings;
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use AptPkg::Config;
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use Debconf::Client::ConfModule ':all';
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use FileHandle;
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use POSIX ();
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use UUID;
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# Since debconf clients get their standard input and output redirected
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# to the debconf front-end, we need to redirect them again before
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# running any other program.
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sub _system {
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my $pid = fork();
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die "$!" unless defined($pid);
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if ($pid == 0) {
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# </dev/null
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POSIX::close(0);
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POSIX::open('/dev/null', POSIX::O_RDONLY) or die "$!";
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# >&2
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POSIX::dup2(2, 1) or die "$!";
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exec(@_);
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exit(255); # usual exit code for failed exec
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} else {
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waitpid($pid, 0);
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# The built-in system() function does this substitution
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if (POSIX::WIFEXITED($?) && POSIX::WEXITSTATUS($?) == 255) {
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return -1;
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} else {
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return $?;
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}
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}
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}
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package DebianKernel::DiskId;
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### utility
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# Import _system() function
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*_system = \&main::_system;
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sub id_to_path {
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my ($id) = @_;
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$id =~ m|^/|
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or $id =~ s{^(LABEL|UUID)=}{'/dev/disk/by-' . lc($1) . '/'}e
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or die "Could not map id $id to path";
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return $id;
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}
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### /etc/fstab
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sub fstab_next {
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# Based on my_getmntent() in mount_mntent.c
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my ($file) = @_;
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my $text = <$file>;
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unless (defined($text)) {
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return ();
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}
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my $line = $text;
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$line =~ s/\r?\n$//;
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$line =~ s/^[ \t]*//;
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if ($line =~ /^(#|$)/) {
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return ($text);
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} else {
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return ($text,
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map({ s/\\([0-7][0-7][0-7])/chr(oct($1) & 0xff)/eg; $_; }
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split(/[ \t]+/, $line)));
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}
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}
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sub fstab_list {
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my ($file) = @_;
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my @bdevs;
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while (1) {
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my ($text, $bdev) = fstab_next($file);
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last unless defined($text);
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if (defined($bdev)) {
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push @bdevs, $bdev;
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}
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}
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return @bdevs;
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}
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sub fstab_update {
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my ($old, $new, $map) = @_;
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while (1) {
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my ($text, $bdev) = fstab_next($old);
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last unless defined($text);
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if (defined($bdev) && defined(my $id = $map->{$bdev})) {
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$text =~ s/^(\s*\S+)(.*)/# $1$2\n$id$2/;
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}
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$new->print("$text");
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}
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}
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### Kernel parameters
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sub kernel_list {
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my ($cmd_line) = @_;
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return ($cmd_line =~ /\broot=(\S+)/) ? ($1) : ();
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}
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sub kernel_update {
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my ($cmd_line, $map) = @_;
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if ($cmd_line =~ /\broot=(\S+)/ && defined(my $id = $map->{$1})) {
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$cmd_line =~ s/\broot=(\S+)/root=$id/;
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return $cmd_line;
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} else {
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return undef;
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}
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}
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### shell script variable assignment
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# Maintains enough context to find statement boundaries, and can parse
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# variable definitions that do not include substitutions. I think.
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sub shellvars_next {
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my ($file) = @_;
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my $text = '';
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my @context = ('');
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my $first = 1;
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my $in_value = 0;
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my ($name, $value);
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my $unhandled = 0;
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LINE:
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while (<$file>) {
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$text .= $_;
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# variable assignment
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if ($first && m/^\s*([A-Za-z_][A-Za-z0-9_]*)=/g) {
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$name = $1;
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$value = '';
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$in_value = 1;
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}
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while (/\G(.*?)([#`'"(){}\s]|\\.|\$[({]?)/gs) {
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my $end_pos = pos;
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my $special = $2;
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if ($in_value) {
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# add non-special characters to the value verbatim
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$value .= $1;
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}
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if ($context[$#context] eq '') {
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# space outside quotes or brackets ends the value
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if ($special =~ /^\s/) {
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$in_value = 0;
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if ($special eq "\n") {
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last LINE;
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}
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}
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# something else after the value means this is a command
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# with an environment override, not a variable definition
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elsif (defined($name) && !$in_value) {
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$unhandled = 1;
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}
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}
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# in single-quoted string
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if ($context[$#context] eq "'") {
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# only the terminating single-quote is special
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if ($special eq "'") {
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pop @context;
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} else {
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$value .= $special;
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}
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}
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# backslash escape
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elsif ($special =~ /^\\/) {
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if ($in_value && $special ne "\\\n") {
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$value .= substr($special, 1, 1);
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}
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}
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# in backtick substitution
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elsif ($context[$#context] eq '`') {
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# backtick does not participate in nesting, so only the
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# terminating backtick should be considered special
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if ($special eq '`') {
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pop @context;
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}
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}
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# comment
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elsif ($context[$#context] !~ /^['"]/ && $special eq '#') {
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# ignore rest of the physical line, except the new-line
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pos = $end_pos;
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/\G.*/g;
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next;
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}
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# start of backtick substitution
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elsif ($special eq '`') {
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push @context, '`';
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$unhandled = 1;
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}
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# start of single/double-quoted string
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elsif ($special =~ /^['"]/ && $context[$#context] !~ /^['"]/) {
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push @context, $special;
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}
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# end of double-quoted string
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elsif ($special eq '"' && $context[$#context] eq '"') {
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pop @context;
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}
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# open bracket
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elsif ($special =~ /^\$?\(/) {
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push @context, ')';
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$unhandled = 1;
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} elsif ($special =~ /^\$\{/) {
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push @context, '}';
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$unhandled = 1;
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}
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# close bracket
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elsif ($special =~ /^[)}]/ && $special eq $context[$#context]) {
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pop @context;
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}
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# variable substitution
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elsif ($special eq '$') {
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$unhandled = 1;
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}
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# not a special character in this context (or a syntax error)
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else {
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if ($in_value) {
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$value .= $special;
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}
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}
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pos = $end_pos;
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}
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$first = 0;
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}
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if ($text eq '') {
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return ();
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} elsif ($unhandled) {
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return ($text);
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} else {
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return ($text, $name, $value);
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}
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}
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sub shellvars_quote {
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my ($value) = @_;
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$value =~ s/'/'\''/g;
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return "'$value'";
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}
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### GRUB 1 (grub-legacy) config
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sub grub1_parse {
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my ($file) = @_;
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my @results = ();
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my $text = '';
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my $in_auto = 0;
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my $in_opts = 0;
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while (<$file>) {
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if ($in_opts && /^\# (\w+)=(.*)/) {
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push @results, [$text];
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$text = '';
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push @results, [$_, $1, $2];
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} else {
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$text .= $_;
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if ($_ eq "### BEGIN AUTOMAGIC KERNELS LIST\n") {
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$in_auto = 1;
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} elsif ($_ eq "### END DEBIAN AUTOMAGIC KERNELS LIST\n") {
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$in_auto = 0;
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} elsif ($_ eq "## ## Start Default Options ##\n") {
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$in_opts = $in_auto;
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} elsif ($_ eq "## ## End Default Options ##\n") {
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$in_opts = 0;
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}
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}
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}
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if ($text ne '') {
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push @results, [$text];
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}
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return @results;
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}
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sub grub1_list {
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my ($file) = @_;
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my %options;
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for (grub1_parse($file)) {
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my ($text, $name, $value) = @$_;
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next unless defined($name);
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$options{$name} = $value;
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}
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my @bdevs;
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if (exists($options{kopt_2_6})) {
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push @bdevs, kernel_list($options{kopt_2_6});
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} elsif (exists($options{kopt})) {
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push @bdevs, kernel_list($options{kopt});
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}
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if (exists($options{xenkopt})) {
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push @bdevs, kernel_list($options{xenkopt});
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}
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return @bdevs;
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}
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sub grub1_update {
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my ($old, $new, $map) = @_;
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my %options;
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for (grub1_parse($old)) {
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my ($text, $name, $value) = @$_;
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next unless defined($name);
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$options{$name} = $value;
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}
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$old->seek(0, 0);
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for (grub1_parse($old)) {
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my ($text, $name, $value) = @$_;
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if (defined($name) &&
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($name eq 'kopt_2_6' ||
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($name eq 'kopt' && !exists($options{kopt_2_6})) ||
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$name eq 'xenkopt')) {
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if (defined(my $new_value = kernel_update($value, $map))) {
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$text = "## $name=$value\n# $name=$new_value\n";
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}
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}
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$new->print($text);
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}
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}
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sub grub1_post {
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_system('update-grub');
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}
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### GRUB 2 config
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sub grub2_list {
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my ($file) = @_;
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my @bdevs;
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while (1) {
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my ($text, $name, $value) = shellvars_next($file);
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last unless defined($text);
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if (defined($name) && $name =~ /^GRUB_CMDLINE_LINUX(?:_DEFAULT)?$/) {
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push @bdevs, kernel_list($value);
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}
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}
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return @bdevs;
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}
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sub grub2_update {
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my ($old, $new, $map) = @_;
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my @bdevs;
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while (1) {
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my ($text, $name, $value) = shellvars_next($old);
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last unless defined($text);
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if (defined($name) && $name =~ /^GRUB_CMDLINE_LINUX(?:_DEFAULT)?$/ &&
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defined(my $new_value = kernel_update($value, $map))) {
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$text =~ s/^/# /gm;
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$text .= sprintf("%s=%s\n", $name, shellvars_quote($new_value));
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}
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$new->print($text);
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}
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}
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sub grub2_post {
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_system('grub-mkconfig', '-o', '/boot/grub/grub.cfg');
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}
|
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### LILO
|
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| 392 |
sub lilo_tokenize {
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# Based on cfg_get_token() and next() in cfg.c.
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| 394 |
# Line boundaries are *not* significant (except as white space) so
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# we tokenize the whole file at once.
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| 396 |
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| 397 |
my ($file) = @_;
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| 398 |
my @tokens = ();
|
| 399 |
my $text = '';
|
| 400 |
my $token;
|
| 401 |
my $in_quote = 0;
|
| 402 |
|
| 403 |
while (<$file>) {
|
| 404 |
# If this is the continuation of a multi-line quote, skip
|
| 405 |
# leading space and push back the necessary context.
|
| 406 |
if ($in_quote) {
|
| 407 |
s/^[ \t]*/"/;
|
| 408 |
$text .= $&;
|
| 409 |
}
|
| 410 |
|
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pos = 0;
|
| 412 |
while (/\G \s* (?:\#.*)?
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| 413 |
(?: (=) |
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| 414 |
" ((?:[^"] | \\[\\"n])*) (" | \\\r?\n) |
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| 415 |
((?:[^\s\#="\\] | \\[^\r\n])+) (\\\r?\n)?)?
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| 416 |
/gsx) {
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| 417 |
my $cont;
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| 418 |
my $new_text = $&;
|
| 419 |
|
| 420 |
if (defined($1)) {
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| 421 |
# equals sign
|
| 422 |
$text = $new_text;
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| 423 |
$token = $1;
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| 424 |
$cont = 0;
|
| 425 |
} elsif (defined($2)) {
|
| 426 |
# quoted text
|
| 427 |
if (!$in_quote) {
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| 428 |
$text = $new_text;
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| 429 |
$token = $2;
|
| 430 |
} else {
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| 431 |
$text .= substr($new_text, 1); # remove the quote again; ick
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| 432 |
$token .= ' ' . $2;
|
| 433 |
}
|
| 434 |
$cont = $3 ne '"';
|
| 435 |
} elsif (defined($4)) {
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| 436 |
# unquoted word
|
| 437 |
if (!defined($token)) {
|
| 438 |
$token = '';
|
| 439 |
}
|
| 440 |
$text .= $new_text;
|
| 441 |
$token .= $4;
|
| 442 |
$cont = defined($5);
|
| 443 |
} else {
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| 444 |
$text .= $new_text;
|
| 445 |
$cont = $new_text eq '';
|
| 446 |
}
|
| 447 |
|
| 448 |
if (!$cont) {
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| 449 |
if ($text =~ /(?:^|[^\\])\$/) {
|
| 450 |
# unhandled expansion
|
| 451 |
$token = undef;
|
| 452 |
} elsif (defined($token)) {
|
| 453 |
if ($in_quote) {
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| 454 |
$token =~ s/\\(.)/$1 eq 'n' ? "\n" : $1/eg;
|
| 455 |
} else {
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| 456 |
$token =~ s/\\(.)/$1/g;
|
| 457 |
}
|
| 458 |
}
|
| 459 |
push @tokens, [$text, $token];
|
| 460 |
$text = '';
|
| 461 |
$token = undef;
|
| 462 |
$in_quote = 0;
|
| 463 |
}
|
| 464 |
}
|
| 465 |
}
|
| 466 |
|
| 467 |
return @tokens;
|
| 468 |
}
|
| 469 |
|
| 470 |
sub lilo_list {
|
| 471 |
my ($file) = @_;
|
| 472 |
my @bdevs = ();
|
| 473 |
my @tokens = lilo_tokenize($file);
|
| 474 |
my $i = 0;
|
| 475 |
my $in_generic = 1; # global or image=/vmlinuz or image=/vmlinuz.old
|
| 476 |
|
| 477 |
while ($i <= $#tokens) {
|
| 478 |
# Configuration items are either <name> "=" <value> or <name> alone.
|
| 479 |
if ($#tokens - $i >= 2 &&
|
| 480 |
defined($tokens[$i + 1][1]) && $tokens[$i + 1][1] eq '=') {
|
| 481 |
my ($name, $value) = ($tokens[$i][1], $tokens[$i + 2][1]);
|
| 482 |
if (defined($name) && defined($value)) {
|
| 483 |
if ($name eq 'image') {
|
| 484 |
$in_generic = ($value =~ m|^/vmlinuz(?:\.old)?$|);
|
| 485 |
} elsif ($in_generic) {
|
| 486 |
if ($name =~ /^(?:boot|root)$/) {
|
| 487 |
push @bdevs, $value;
|
| 488 |
} elsif ($name =~ /^(?:addappend|append|literal)$/) {
|
| 489 |
push @bdevs, kernel_list($value);
|
| 490 |
}
|
| 491 |
}
|
| 492 |
}
|
| 493 |
$i += 3;
|
| 494 |
} else {
|
| 495 |
$i += 1;
|
| 496 |
}
|
| 497 |
}
|
| 498 |
|
| 499 |
return @bdevs;
|
| 500 |
}
|
| 501 |
|
| 502 |
sub _lilo_update {
|
| 503 |
my ($old, $new, $map, $replace) = @_;
|
| 504 |
my @tokens = lilo_tokenize($old);
|
| 505 |
my $i = 0;
|
| 506 |
my $in_generic = 1; # global or image=/vmlinuz or image=/vmlinuz.old
|
| 507 |
|
| 508 |
while ($i <= $#tokens) {
|
| 509 |
my $text = $tokens[$i][0];
|
| 510 |
|
| 511 |
if ($#tokens - $i >= 2 &&
|
| 512 |
defined($tokens[$i + 1][1]) && $tokens[$i + 1][1] eq '=') {
|
| 513 |
my ($name, $value) = ($tokens[$i][1], $tokens[$i + 2][1]);
|
| 514 |
my $new_value;
|
| 515 |
if (defined($name) && defined($value)) {
|
| 516 |
if ($name eq 'image') {
|
| 517 |
$in_generic = ($value =~ m|^/vmlinuz(?:\.old)?$|);
|
| 518 |
} elsif ($in_generic) {
|
| 519 |
if ($name eq 'boot') {
|
| 520 |
# 'boot' is used directly by the lilo command, which
|
| 521 |
# doesn't use libblkid
|
| 522 |
$new_value = $map->{$value} && id_to_path($map->{$value});
|
| 523 |
} elsif ($name eq 'root') {
|
| 524 |
# 'root' adds a root parameter to the kernel command
|
| 525 |
# line
|
| 526 |
$new_value = $map->{$value};
|
| 527 |
} elsif ($name =~ /^(?:addappend|append|literal)$/) {
|
| 528 |
# These are all destined for the kernel command line
|
| 529 |
# in some way
|
| 530 |
$new_value = kernel_update($value, $map);
|
| 531 |
}
|
| 532 |
}
|
| 533 |
}
|
| 534 |
if (defined($new_value)) {
|
| 535 |
$new_value =~ s/\\/\\\\/g;
|
| 536 |
$text = &{$replace}($name, $value, $new_value) ||
|
| 537 |
"\n# $name = $value\n$name = \"$new_value\"\n";
|
| 538 |
} else {
|
| 539 |
$text .= $tokens[$i + 1][0] . $tokens[$i + 2][0];
|
| 540 |
}
|
| 541 |
$i += 3;
|
| 542 |
} else {
|
| 543 |
$i += 1;
|
| 544 |
}
|
| 545 |
|
| 546 |
$new->print($text);
|
| 547 |
}
|
| 548 |
}
|
| 549 |
|
| 550 |
sub lilo_update {
|
| 551 |
my ($old, $new, $map) = @_;
|
| 552 |
_lilo_update($old, $new, $map, sub { return undef });
|
| 553 |
}
|
| 554 |
|
| 555 |
sub lilo_post {
|
| 556 |
_system('lilo');
|
| 557 |
}
|
| 558 |
|
| 559 |
### SILO
|
| 560 |
|
| 561 |
sub silo_post {
|
| 562 |
_system('silo');
|
| 563 |
}
|
| 564 |
|
| 565 |
### ELILO
|
| 566 |
|
| 567 |
sub elilo_update {
|
| 568 |
my ($old, $new, $map) = @_;
|
| 569 |
# Work around bug #581173 - boot value must have no space before
|
| 570 |
# and no quotes around it.
|
| 571 |
sub replace {
|
| 572 |
my ($name, $value, $new_value) = @_;
|
| 573 |
return ($name eq 'boot') ? "# boot=$value\nboot=$new_value\n" : undef;
|
| 574 |
}
|
| 575 |
_lilo_update($old, $new, $map, \&replace);
|
| 576 |
}
|
| 577 |
|
| 578 |
sub elilo_post {
|
| 579 |
_system('elilo');
|
| 580 |
}
|
| 581 |
|
| 582 |
### extlinux
|
| 583 |
|
| 584 |
sub extlinux_old_path {
|
| 585 |
for ('/boot/extlinux', '/boot/boot/exlinux', '/extlinux') {
|
| 586 |
if (-e) {
|
| 587 |
return "$_/options.cfg";
|
| 588 |
}
|
| 589 |
}
|
| 590 |
return undef;
|
| 591 |
}
|
| 592 |
|
| 593 |
sub extlinux_old_list {
|
| 594 |
my ($file) = @_;
|
| 595 |
while (<$file>) {
|
| 596 |
if (/^## ROOT=(.*)/) {
|
| 597 |
return kernel_list($1);
|
| 598 |
}
|
| 599 |
}
|
| 600 |
return ();
|
| 601 |
}
|
| 602 |
|
| 603 |
sub extlinux_old_update {
|
| 604 |
my ($old, $new, $map) = @_;
|
| 605 |
while (<$old>) {
|
| 606 |
my $text = $_;
|
| 607 |
if (/^## ROOT=(.*)/) {
|
| 608 |
my $new_params = kernel_update($1, $map);
|
| 609 |
if (defined($new_params)) {
|
| 610 |
$text = "## $text" . "## ROOT=$new_params\n";
|
| 611 |
}
|
| 612 |
}
|
| 613 |
$new->print($text);
|
| 614 |
}
|
| 615 |
}
|
| 616 |
|
| 617 |
sub extlinux_new_list {
|
| 618 |
my ($file) = @_;
|
| 619 |
while (<$file>) {
|
| 620 |
if (/^# ROOT=(.*)/) {
|
| 621 |
return kernel_list($1);
|
| 622 |
}
|
| 623 |
}
|
| 624 |
return ();
|
| 625 |
}
|
| 626 |
|
| 627 |
sub extlinux_new_update {
|
| 628 |
my ($old, $new, $map) = @_;
|
| 629 |
while (<$old>) {
|
| 630 |
my $text = $_;
|
| 631 |
if (/^# ROOT=(.*)/) {
|
| 632 |
my $new_params = kernel_update($1, $map);
|
| 633 |
if (defined($new_params)) {
|
| 634 |
$text = "## $text" . "# ROOT=$new_params\n";
|
| 635 |
}
|
| 636 |
}
|
| 637 |
$new->print($text);
|
| 638 |
}
|
| 639 |
}
|
| 640 |
|
| 641 |
sub extlinux_post {
|
| 642 |
_system('update-extlinux');
|
| 643 |
}
|
| 644 |
|
| 645 |
# udev persistent-cd
|
| 646 |
|
| 647 |
sub udev_next {
|
| 648 |
my ($file) = @_;
|
| 649 |
my @results = ();
|
| 650 |
|
| 651 |
# Based on parse_file() and get_key() in udev-rules.c
|
| 652 |
while (1) {
|
| 653 |
my $text = <$file>;
|
| 654 |
last if !defined($text) || $text eq '';
|
| 655 |
|
| 656 |
if ($text =~ /^\s*(?:#|$)/) {
|
| 657 |
push @results, [$text];
|
| 658 |
} else {
|
| 659 |
my $end_pos = 0;
|
| 660 |
while ($text =~ /\G [\s,]* ((?:[^\s=+!:]|[+!:](?!=))+)
|
| 661 |
\s* ([=+!:]?=) "([^"]*)"/gx) {
|
| 662 |
push @results, [$&, $1, $2, $3];
|
| 663 |
$end_pos = pos($text);
|
| 664 |
}
|
| 665 |
push @results, [substr($text, $end_pos)];
|
| 666 |
last if $text !~ /\\\n$/;
|
| 667 |
}
|
| 668 |
}
|
| 669 |
|
| 670 |
return @results;
|
| 671 |
}
|
| 672 |
|
| 673 |
sub udev_parse_symlink_rule {
|
| 674 |
my ($path, $symlink);
|
| 675 |
for (@_) {
|
| 676 |
my ($text, $key, $op, $value) = @$_;
|
| 677 |
next if !defined($key);
|
| 678 |
if ($key eq 'ENV{ID_PATH}' && $op eq '==') {
|
| 679 |
$path = $value;
|
| 680 |
} elsif ($key eq 'SYMLINK' && $op eq '+=') {
|
| 681 |
$symlink = $value;
|
| 682 |
}
|
| 683 |
}
|
| 684 |
return ($path, $symlink);
|
| 685 |
}
|
| 686 |
|
| 687 |
# Find symlink rules using IDE device paths that aren't matched by rules
|
| 688 |
# using the corresponding SCSI device path. Return an array containing
|
| 689 |
# the corresponding path for each rule where this is the case and undef
|
| 690 |
# for all other rules.
|
| 691 |
sub udev_cd_find_unmatched_ide_rules {
|
| 692 |
my ($file) = @_;
|
| 693 |
my %wanted_rule;
|
| 694 |
my @unmatched;
|
| 695 |
my $i = 0;
|
| 696 |
|
| 697 |
while (1) {
|
| 698 |
my @keys = udev_next($file);
|
| 699 |
last if $#keys < 0;
|
| 700 |
|
| 701 |
my ($path, $symlink) = udev_parse_symlink_rule(@keys);
|
| 702 |
if (defined($path) && defined($symlink)) {
|
| 703 |
if ($path =~ /-ide-\d+:\d+$/) {
|
| 704 |
# libata uses the PATA controller and device numbers
|
| 705 |
# as SCSI host number and bus id. Channel number and
|
| 706 |
# LUN are always 0. The parent device path should
|
| 707 |
# stay the same.
|
| 708 |
$path =~ s/-ide-(\d+):(\d+)$/-scsi-$1:0:$2:0/;
|
| 709 |
my $rule_key = $path . ' ' . $symlink;
|
| 710 |
if (!exists($wanted_rule{$rule_key})) {
|
| 711 |
$wanted_rule{$rule_key} = $i;
|
| 712 |
$unmatched[$i] = $path;
|
| 713 |
}
|
| 714 |
} elsif ($path =~ /-scsi-\d+:\d+:\d+:\d+$/) {
|
| 715 |
my $rule_key = $path . ' ' . $symlink;
|
| 716 |
my $j = $wanted_rule{$rule_key};
|
| 717 |
if (defined($j) && $j >= 0) {
|
| 718 |
$unmatched[$j] = undef;
|
| 719 |
}
|
| 720 |
$wanted_rule{$rule_key} = -1;
|
| 721 |
}
|
| 722 |
}
|
| 723 |
|
| 724 |
++$i;
|
| 725 |
}
|
| 726 |
|
| 727 |
return @unmatched;
|
| 728 |
}
|
| 729 |
|
| 730 |
sub udev_cd_needs_update {
|
| 731 |
my ($file) = @_;
|
| 732 |
my %paths;
|
| 733 |
for (udev_cd_find_unmatched_ide_rules($file)) {
|
| 734 |
if (defined($_)) {
|
| 735 |
$paths{$_} = 1;
|
| 736 |
}
|
| 737 |
}
|
| 738 |
return join('\n', map({"+ PATH=$_"} keys(%paths)));
|
| 739 |
}
|
| 740 |
|
| 741 |
sub udev_cd_update {
|
| 742 |
my ($old, $new) = @_; # ignore map
|
| 743 |
|
| 744 |
# Find which rules we will need to copy and edit, then rewind
|
| 745 |
my @unmatched = udev_cd_find_unmatched_ide_rules($old);
|
| 746 |
$old->seek(0, 0);
|
| 747 |
|
| 748 |
my $i = 0;
|
| 749 |
while (1) {
|
| 750 |
my @keys = udev_next($old);
|
| 751 |
last if $#keys < 0;
|
| 752 |
|
| 753 |
my $old_text = '';
|
| 754 |
my $new_text = '';
|
| 755 |
|
| 756 |
for (@keys) {
|
| 757 |
my ($text, $key, $op, $value) = @$_;
|
| 758 |
$old_text .= $text;
|
| 759 |
next unless defined($unmatched[$i]) && defined($key);
|
| 760 |
|
| 761 |
if ($key eq 'ENV{ID_PATH}' && $op eq '==') {
|
| 762 |
my $value = $unmatched[$i];
|
| 763 |
$new_text .= ", $key$op\"$value\"";
|
| 764 |
} else {
|
| 765 |
$new_text .= $text;
|
| 766 |
}
|
| 767 |
}
|
| 768 |
|
| 769 |
$new->print($old_text);
|
| 770 |
if ($unmatched[$i]) {
|
| 771 |
$new->print($new_text . "\n");
|
| 772 |
}
|
| 773 |
|
| 774 |
++$i;
|
| 775 |
}
|
| 776 |
}
|
| 777 |
|
| 778 |
# initramfs-tools resume
|
| 779 |
|
| 780 |
sub initramfs_resume_list {
|
| 781 |
my ($file) = @_;
|
| 782 |
my @results = ();
|
| 783 |
|
| 784 |
while (1) {
|
| 785 |
my ($text, $name, $value) = shellvars_next($file);
|
| 786 |
last unless defined($text);
|
| 787 |
if (defined($name) && $name eq 'RESUME') {
|
| 788 |
$results[0] = $value;
|
| 789 |
}
|
| 790 |
}
|
| 791 |
|
| 792 |
return @results;
|
| 793 |
}
|
| 794 |
|
| 795 |
sub initramfs_resume_update {
|
| 796 |
my ($old, $new, $map) = @_;
|
| 797 |
|
| 798 |
while (1) {
|
| 799 |
my ($text, $name, $value) = shellvars_next($old);
|
| 800 |
last unless defined($text);
|
| 801 |
if (defined($name) && $name eq 'RESUME' &&
|
| 802 |
defined(my $new_value = $map->{$value})) {
|
| 803 |
$text =~ s/^/# /gm;
|
| 804 |
$text .= sprintf("%s=%s\n", $name, shellvars_quote($new_value));
|
| 805 |
}
|
| 806 |
$new->print($text);
|
| 807 |
}
|
| 808 |
}
|
| 809 |
|
| 810 |
# uswsusp resume
|
| 811 |
|
| 812 |
sub uswsusp_next {
|
| 813 |
# Based on parse_line() in config_parser.c
|
| 814 |
|
| 815 |
my ($file) = @_;
|
| 816 |
my $text = <$file>;
|
| 817 |
|
| 818 |
if (!defined($text) || $text eq '') {
|
| 819 |
return ();
|
| 820 |
}
|
| 821 |
|
| 822 |
local $_ = $text;
|
| 823 |
s/^\s*(?:#.*)?//;
|
| 824 |
s/\s*$//;
|
| 825 |
|
| 826 |
if ($text =~ /^([\w ]*\w)[ \t]*[:=][ \t]*(.+)$/) {
|
| 827 |
return ($text, $1, $2);
|
| 828 |
} else {
|
| 829 |
return ($text);
|
| 830 |
}
|
| 831 |
}
|
| 832 |
|
| 833 |
sub uswsusp_resume_list {
|
| 834 |
my ($file) = @_;
|
| 835 |
my @results = ();
|
| 836 |
|
| 837 |
while (1) {
|
| 838 |
my ($text, $name, $value) = uswsusp_next($file);
|
| 839 |
last unless defined($text);
|
| 840 |
if (defined($name) && $name eq 'resume device') {
|
| 841 |
$results[0] = $value;
|
| 842 |
}
|
| 843 |
}
|
| 844 |
|
| 845 |
return @results;
|
| 846 |
}
|
| 847 |
|
| 848 |
sub uswsusp_resume_update {
|
| 849 |
my ($old, $new, $map) = @_;
|
| 850 |
|
| 851 |
while (1) {
|
| 852 |
my ($text, $name, $value) = uswsusp_next($old);
|
| 853 |
last unless defined($text);
|
| 854 |
if (defined($name) && $name eq 'resume device' &&
|
| 855 |
defined(my $new_value = $map->{$value})) {
|
| 856 |
$text =~ s/^/# /gm;
|
| 857 |
$text .= sprintf("%s = %s\n", $name, id_to_path($new_value));
|
| 858 |
}
|
| 859 |
$new->print($text);
|
| 860 |
}
|
| 861 |
}
|
| 862 |
|
| 863 |
# cryptsetup
|
| 864 |
|
| 865 |
sub cryptsetup_next {
|
| 866 |
my ($file) = @_;
|
| 867 |
my $text = <$file>;
|
| 868 |
unless (defined($text)) {
|
| 869 |
return ();
|
| 870 |
}
|
| 871 |
|
| 872 |
my $line = $text;
|
| 873 |
if ($line =~ /^\s*(#|$)/) {
|
| 874 |
return ($text);
|
| 875 |
} else {
|
| 876 |
$line =~ s/\s*$//;
|
| 877 |
$line =~ s/^\s*//;
|
| 878 |
return ($text, split(/\s+/, $line, 4));
|
| 879 |
}
|
| 880 |
}
|
| 881 |
|
| 882 |
sub cryptsetup_list {
|
| 883 |
my ($file) = @_;
|
| 884 |
my (@results) = ();
|
| 885 |
|
| 886 |
while (1) {
|
| 887 |
my ($text, undef, $src) = cryptsetup_next($file);
|
| 888 |
last unless defined($text);
|
| 889 |
if (defined($src)) {
|
| 890 |
push @results, $src;
|
| 891 |
}
|
| 892 |
}
|
| 893 |
|
| 894 |
return @results;
|
| 895 |
}
|
| 896 |
|
| 897 |
sub cryptsetup_update {
|
| 898 |
my ($old, $new, $map) = @_;
|
| 899 |
|
| 900 |
while (1) {
|
| 901 |
my ($text, $dst, $src, $key, $opts) = cryptsetup_next($old);
|
| 902 |
last unless defined($text);
|
| 903 |
if (defined($src) && defined($map->{$src})) {
|
| 904 |
$text = "# $text" .
|
| 905 |
join(' ', $dst, $map->{$src}, $key, $opts) . "\n";
|
| 906 |
}
|
| 907 |
$new->print($text);
|
| 908 |
}
|
| 909 |
}
|
| 910 |
|
| 911 |
# hdparm
|
| 912 |
|
| 913 |
sub hdparm_list {
|
| 914 |
my ($file) = @_;
|
| 915 |
my (@results) = ();
|
| 916 |
|
| 917 |
# I really can't be bothered to parse this mess. Just see if
|
| 918 |
# there's anything like a device name on a non-comment line.
|
| 919 |
while (<$file>) {
|
| 920 |
if (!/^\s*#/) {
|
| 921 |
push @results, grep({m|^/dev/|} split(/\s+/));
|
| 922 |
}
|
| 923 |
}
|
| 924 |
|
| 925 |
return @results;
|
| 926 |
}
|
| 927 |
|
| 928 |
### mdadm
|
| 929 |
|
| 930 |
sub mdadm_list {
|
| 931 |
my ($file) = @_;
|
| 932 |
my (@results) = ();
|
| 933 |
|
| 934 |
while (<$file>) {
|
| 935 |
# Look for DEVICE (case-insensitive, may be abbreviated to as
|
| 936 |
# little as 3 letters) followed by a whitespace-separated list
|
| 937 |
# of devices (or wildcards, or keywords!). Ignore comments
|
| 938 |
# (hash preceded by whitespace).
|
| 939 |
if (/^DEV(?:I(?:C(?:E)?)?)?[ \t]*((?:[^ \t]|[ \t][^#])*)/i) {
|
| 940 |
push @results, split(/[ \t]+/, $1);
|
| 941 |
}
|
| 942 |
}
|
| 943 |
|
| 944 |
return @results;
|
| 945 |
}
|
| 946 |
|
| 947 |
### list of all configuration files and functions
|
| 948 |
|
| 949 |
my @config_files = ({packages => 'mount',
|
| 950 |
path => '/etc/fstab',
|
| 951 |
list => \&fstab_list,
|
| 952 |
update => \&fstab_update},
|
| 953 |
{packages => 'grub grub-legacy',
|
| 954 |
path => '/boot/grub/menu.lst',
|
| 955 |
list => \&grub1_list,
|
| 956 |
update => \&grub1_update,
|
| 957 |
post_update => \&grub1_post,
|
| 958 |
is_boot_loader => 1},
|
| 959 |
{packages => 'grub-common',
|
| 960 |
path => '/etc/default/grub',
|
| 961 |
list => \&grub2_list,
|
| 962 |
update => \&grub2_update,
|
| 963 |
post_update => \&grub2_post,
|
| 964 |
is_boot_loader => 1},
|
| 965 |
{packages => 'lilo',
|
| 966 |
path => '/etc/lilo.conf',
|
| 967 |
list => \&lilo_list,
|
| 968 |
update => \&lilo_update,
|
| 969 |
post_update => \&lilo_post,
|
| 970 |
is_boot_loader => 1},
|
| 971 |
{packages => 'silo',
|
| 972 |
path => '/etc/silo.conf',
|
| 973 |
list => \&lilo_list,
|
| 974 |
update => \&lilo_update,
|
| 975 |
post_update => \&silo_post,
|
| 976 |
is_boot_loader => 1},
|
| 977 |
{packages => 'quik',
|
| 978 |
path => '/etc/quik.conf',
|
| 979 |
list => \&lilo_list,
|
| 980 |
update => \&lilo_update,
|
| 981 |
is_boot_loader => 1},
|
| 982 |
{packages => 'yaboot',
|
| 983 |
path => '/etc/yaboot.conf',
|
| 984 |
list => \&lilo_list,
|
| 985 |
update => \&lilo_update,
|
| 986 |
is_boot_loader => 1},
|
| 987 |
{packages => 'elilo',
|
| 988 |
path => '/etc/elilo.conf',
|
| 989 |
list => \&lilo_list,
|
| 990 |
update => \&elilo_update,
|
| 991 |
post_update => \&elilo_post,
|
| 992 |
is_boot_loader => 1},
|
| 993 |
{packages => 'extlinux',
|
| 994 |
path => extlinux_old_path(),
|
| 995 |
list => \&extlinux_old_list,
|
| 996 |
update => \&extlinux_old_update,
|
| 997 |
post_update => \&extlinux_post,
|
| 998 |
is_boot_loader => 1},
|
| 999 |
{packages => 'extlinux',
|
| 1000 |
path => '/etc/default/extlinux',
|
| 1001 |
list => \&extlinux_new_list,
|
| 1002 |
update => \&extlinux_new_update,
|
| 1003 |
post_update => \&extlinux_post,
|
| 1004 |
is_boot_loader => 1},
|
| 1005 |
{packages => 'udev',
|
| 1006 |
path => '/etc/udev/rules.d/70-persistent-cd.rules',
|
| 1007 |
needs_update => \&udev_cd_needs_update,
|
| 1008 |
update => \&udev_cd_update},
|
| 1009 |
{packages => 'initramfs-tools',
|
| 1010 |
path => '/etc/initramfs-tools/conf.d/resume',
|
| 1011 |
list => \&initramfs_resume_list,
|
| 1012 |
update => \&initramfs_resume_update,
|
| 1013 |
# udev will source all files in this directory,
|
| 1014 |
# with few exceptions. Such as including a '^'.
|
| 1015 |
suffix => '^old'},
|
| 1016 |
{packages => 'uswsusp',
|
| 1017 |
path => '/etc/uswsusp.conf',
|
| 1018 |
list => \&uswsusp_resume_list,
|
| 1019 |
update => \&uswsusp_resume_update},
|
| 1020 |
{packages => 'cryptsetup',
|
| 1021 |
path => '/etc/crypttab',
|
| 1022 |
list => \&cryptsetup_list,
|
| 1023 |
update => \&cryptsetup_update},
|
| 1024 |
# mdadm.conf requires manual update because it may
|
| 1025 |
# contain wildcards.
|
| 1026 |
{packages => 'mdadm',
|
| 1027 |
path => '/etc/mdadm/mdadm.conf',
|
| 1028 |
list => \&mdadm_list},
|
| 1029 |
# hdparm.conf requires manual update because it
|
| 1030 |
# (1) refers to whole disks (2) might not work
|
| 1031 |
# properly with the new drivers (3) is in a very
|
| 1032 |
# special format.
|
| 1033 |
{packages => 'hdparm',
|
| 1034 |
path => '/etc/hdparm.conf',
|
| 1035 |
list => \&hdparm_list});
|
| 1036 |
|
| 1037 |
### Filesystem labels and UUIDs
|
| 1038 |
|
| 1039 |
sub ext2_set_label {
|
| 1040 |
my ($bdev, $label) = @_;
|
| 1041 |
_system('tune2fs', '-L', $label, $bdev) == 0 or die "tune2fs failed: $?";
|
| 1042 |
}
|
| 1043 |
sub ext2_set_uuid {
|
| 1044 |
my ($bdev, $uuid) = @_;
|
| 1045 |
_system('tune2fs', '-U', $uuid, $bdev) == 0 or die "tune2fs failed: $?";
|
| 1046 |
}
|
| 1047 |
|
| 1048 |
sub jfs_set_label {
|
| 1049 |
my ($bdev, $label) = @_;
|
| 1050 |
_system('jfs_tune', '-L', $label, $bdev) == 0 or die "jfs_tune failed: $?";
|
| 1051 |
}
|
| 1052 |
sub jfs_set_uuid {
|
| 1053 |
my ($bdev, $uuid) = @_;
|
| 1054 |
_system('jfs_tune', '-U', $uuid, $bdev) == 0 or die "jfs_tune failed: $?";
|
| 1055 |
}
|
| 1056 |
|
| 1057 |
sub fat_set_label {
|
| 1058 |
my ($bdev, $label) = @_;
|
| 1059 |
_system('dosfslabel', $bdev, $label) == 0 or die "dosfslabel failed: $?";
|
| 1060 |
}
|
| 1061 |
|
| 1062 |
sub ntfs_set_label {
|
| 1063 |
my ($bdev, $label) = @_;
|
| 1064 |
_system('ntfslabel', $bdev, $label) == 0 or die "ntfslabel failed: $?";
|
| 1065 |
}
|
| 1066 |
|
| 1067 |
sub reiserfs_set_label {
|
| 1068 |
my ($bdev, $label) = @_;
|
| 1069 |
_system('reiserfstune', '--label', $label, $bdev)
|
| 1070 |
or die "reiserfstune failed: $?";
|
| 1071 |
}
|
| 1072 |
sub reiserfs_set_uuid {
|
| 1073 |
my ($bdev, $uuid) = @_;
|
| 1074 |
_system('reiserfstune', '--uuid', $uuid, $bdev)
|
| 1075 |
or die "reiserfstune failed: $?";
|
| 1076 |
}
|
| 1077 |
|
| 1078 |
# There is no command to relabel swap, and we mustn't run mkswap if
|
| 1079 |
# the partition is already in use. Thankfully the header format is
|
| 1080 |
# pretty simple; it starts with this structure:
|
| 1081 |
# struct swap_header_v1_2 {
|
| 1082 |
# char bootbits[1024]; /* Space for disklabel etc. */
|
| 1083 |
# unsigned int version;
|
| 1084 |
# unsigned int last_page;
|
| 1085 |
# unsigned int nr_badpages;
|
| 1086 |
# unsigned char uuid[16];
|
| 1087 |
# char volume_name[16];
|
| 1088 |
# unsigned int padding[117];
|
| 1089 |
# unsigned int badpages[1];
|
| 1090 |
# };
|
| 1091 |
# and has the signature 'SWAPSPACE2' at the end of the first page.
|
| 1092 |
use constant { SWAP_SIGNATURE => 'SWAPSPACE2',
|
| 1093 |
SWAP_UUID_OFFSET => 1036, SWAP_UUID_LEN => 16,
|
| 1094 |
SWAP_LABEL_OFFSET => 1052, SWAP_LABEL_LEN => 16 };
|
| 1095 |
sub _swap_set_field {
|
| 1096 |
my ($bdev, $offset, $value) = @_;
|
| 1097 |
my $pagesize = POSIX::sysconf(POSIX::_SC_PAGESIZE) or die "$!";
|
| 1098 |
my ($length, $signature);
|
| 1099 |
|
| 1100 |
my $fd = POSIX::open($bdev, POSIX::O_RDWR);
|
| 1101 |
defined($fd) or die "$!";
|
| 1102 |
|
| 1103 |
# Check the signature
|
| 1104 |
POSIX::lseek($fd, $pagesize - length(SWAP_SIGNATURE), POSIX::SEEK_SET);
|
| 1105 |
$length = POSIX::read($fd, $signature, length(SWAP_SIGNATURE));
|
| 1106 |
if (!defined($length) || $signature ne SWAP_SIGNATURE) {
|
| 1107 |
POSIX::close($fd);
|
| 1108 |
die "swap signature not found on $bdev";
|
| 1109 |
}
|
| 1110 |
|
| 1111 |
# Set the field
|
| 1112 |
POSIX::lseek($fd, $offset, POSIX::SEEK_SET);
|
| 1113 |
$length = POSIX::write($fd, $value, length($value));
|
| 1114 |
if (!defined($length) || $length != length($value)) {
|
| 1115 |
my $error = "$!";
|
| 1116 |
POSIX::close($fd);
|
| 1117 |
die $error;
|
| 1118 |
}
|
| 1119 |
|
| 1120 |
POSIX::close($fd);
|
| 1121 |
}
|
| 1122 |
sub swap_set_label {
|
| 1123 |
my ($bdev, $label) = @_;
|
| 1124 |
_swap_set_field($bdev, SWAP_LABEL_OFFSET, pack('Z' . SWAP_LABEL_LEN, $label));
|
| 1125 |
}
|
| 1126 |
sub swap_set_uuid {
|
| 1127 |
my ($bdev, $uuid) = @_;
|
| 1128 |
my $uuid_bin;
|
| 1129 |
if (UUID::parse($uuid, $uuid_bin) != 0 ||
|
| 1130 |
length($uuid_bin) != SWAP_UUID_LEN) {
|
| 1131 |
die "internal error: invalid UUID string";
|
| 1132 |
}
|
| 1133 |
_swap_set_field($bdev, SWAP_UUID_OFFSET, $uuid_bin);
|
| 1134 |
}
|
| 1135 |
|
| 1136 |
sub ufs_set_label {
|
| 1137 |
my ($bdev, $label) = @_;
|
| 1138 |
_system('tunefs.ufs', '-L', $label, $bdev) or die "tunefs.ufs failed: $?";
|
| 1139 |
}
|
| 1140 |
|
| 1141 |
sub xfs_set_label {
|
| 1142 |
my ($bdev, $label) = @_;
|
| 1143 |
_system('xfs_admin', '-L', $label, $bdev) or die "xfs_admin failed: $?";
|
| 1144 |
}
|
| 1145 |
sub xfs_set_uuid {
|
| 1146 |
my ($bdev, $uuid) = @_;
|
| 1147 |
_system('xfs_admin', '-U', $uuid, $bdev) or die "xfs_admin failed: $?";
|
| 1148 |
}
|
| 1149 |
|
| 1150 |
my %filesystem_types = (
|
| 1151 |
ext2 => { label_len => 16, set_label => \&ext2_set_label,
|
| 1152 |
set_uuid => \&ext2_set_uuid },
|
| 1153 |
ext3 => { label_len => 16, set_label => \&ext2_set_label,
|
| 1154 |
set_uuid => \&ext2_set_uuid },
|
| 1155 |
ext4 => { label_len => 16, set_label => \&ext2_set_label,
|
| 1156 |
set_uuid => \&ext2_set_uuid },
|
| 1157 |
jfs => { label_len => 16, set_label => \&jfs_set_label,
|
| 1158 |
set_uuid => \&jfs_set_uuid },
|
| 1159 |
msdos => { label_len => 11, set_label => \&fat_set_label },
|
| 1160 |
ntfs => { label_len => 128, set_label => \&ntfs_set_label },
|
| 1161 |
reiserfs => { label_len => 16, set_label => \&reiserfs_set_label,
|
| 1162 |
set_uuid => \&reiserfs_set_uuid },
|
| 1163 |
swap => { label_len => SWAP_LABEL_LEN, set_label => \&swap_set_label,
|
| 1164 |
set_uuid => \&swap_set_uuid },
|
| 1165 |
ufs => { label_len => 32, set_label => \&ufs_set_label },
|
| 1166 |
vfat => { label_len => 11, set_label => \&fat_set_label },
|
| 1167 |
xfs => { label_len => 12, set_label => \&xfs_set_label,
|
| 1168 |
set_uuid => \&xfs_set_uuid }
|
| 1169 |
);
|
| 1170 |
|
| 1171 |
my %bdev_map;
|
| 1172 |
my %id_map;
|
| 1173 |
|
| 1174 |
sub scan_config_files {
|
| 1175 |
my @configs;
|
| 1176 |
|
| 1177 |
# Find all IDE/SCSI disks mentioned in configurations
|
| 1178 |
for my $config (@config_files) {
|
| 1179 |
# Is the file present?
|
| 1180 |
my $path = $config->{path};
|
| 1181 |
if (!defined($path)) {
|
| 1182 |
next;
|
| 1183 |
}
|
| 1184 |
my $file = new FileHandle($path, 'r');
|
| 1185 |
if (!defined($file)) {
|
| 1186 |
if ($! == POSIX::ENOENT) {
|
| 1187 |
next;
|
| 1188 |
}
|
| 1189 |
die "$!";
|
| 1190 |
}
|
| 1191 |
|
| 1192 |
# Are any of the related packages wanted or installed?
|
| 1193 |
my $wanted = 0;
|
| 1194 |
my $installed = 0;
|
| 1195 |
my $packages = $config->{packages};
|
| 1196 |
for (`dpkg-query 2>/dev/null --showformat '\${status}\\n' -W $packages`)
|
| 1197 |
{
|
| 1198 |
$wanted = 1 if /^install /;
|
| 1199 |
$installed = 1 if / installed\n$/;
|
| 1200 |
}
|
| 1201 |
if (!$wanted && !$installed) {
|
| 1202 |
next;
|
| 1203 |
}
|
| 1204 |
|
| 1205 |
my @matched_bdevs = ();
|
| 1206 |
my $id_map_text;
|
| 1207 |
my $needs_update;
|
| 1208 |
|
| 1209 |
if (exists($config->{needs_update})) {
|
| 1210 |
$id_map_text = &{$config->{needs_update}}($file);
|
| 1211 |
$needs_update = defined($id_map_text) && $id_map_text ne '';
|
| 1212 |
} elsif (exists($config->{list})) {
|
| 1213 |
for my $bdev (&{$config->{list}}($file)) {
|
| 1214 |
# Match standard IDE and SCSI device names, plus wildcards
|
| 1215 |
# in disk device names to allow for mdadm insanity.
|
| 1216 |
if ($bdev =~ m{^/dev/(?:[hs]d[a-z\?\*][\d\?\*]*|
|
| 1217 |
s(?:cd|r)\d+)$}x &&
|
| 1218 |
($bdev =~ m/[\?\*]/ || -b $bdev)) {
|
| 1219 |
$bdev_map{$bdev} = {};
|
| 1220 |
push @matched_bdevs, $bdev;
|
| 1221 |
}
|
| 1222 |
}
|
| 1223 |
$needs_update = @matched_bdevs > 0;
|
| 1224 |
} else {
|
| 1225 |
# Needs manual update
|
| 1226 |
$needs_update = 1;
|
| 1227 |
}
|
| 1228 |
|
| 1229 |
push @configs, {config => $config,
|
| 1230 |
devices => \@matched_bdevs,
|
| 1231 |
id_map_text => $id_map_text,
|
| 1232 |
installed => $installed,
|
| 1233 |
needs_update => $needs_update};
|
| 1234 |
}
|
| 1235 |
|
| 1236 |
my $fstab = new FileHandle('/etc/fstab', 'r') or die "$!";
|
| 1237 |
while (1) {
|
| 1238 |
my ($text, $bdev, $path, $type) = fstab_next($fstab);
|
| 1239 |
last unless defined($text);
|
| 1240 |
if (defined($type) && exists($bdev_map{$bdev})) {
|
| 1241 |
$bdev_map{$bdev}->{path} = $path;
|
| 1242 |
$bdev_map{$bdev}->{type} = $type;
|
| 1243 |
}
|
| 1244 |
}
|
| 1245 |
$fstab->close();
|
| 1246 |
|
| 1247 |
return @configs;
|
| 1248 |
}
|
| 1249 |
|
| 1250 |
sub add_tag {
|
| 1251 |
# Map disks to labels/UUIDs and vice versa. Include all disks in
|
| 1252 |
# the reverse mapping so we can detect ambiguity.
|
| 1253 |
my ($bdev, $name, $value, $new) = @_;
|
| 1254 |
my $id = "$name=$value";
|
| 1255 |
push @{$id_map{$id}}, $bdev;
|
| 1256 |
if (exists($bdev_map{$bdev})) {
|
| 1257 |
$bdev_map{$bdev}->{$name} = $value;
|
| 1258 |
push @{$bdev_map{$bdev}->{ids}}, $id;
|
| 1259 |
}
|
| 1260 |
if ($new) {
|
| 1261 |
$bdev_map{$bdev}->{new_id} = $id;
|
| 1262 |
}
|
| 1263 |
}
|
| 1264 |
|
| 1265 |
sub scan_devices {
|
| 1266 |
my $id_command;
|
| 1267 |
if (-x '/sbin/vol_id') {
|
| 1268 |
$id_command = '/sbin/vol_id';
|
| 1269 |
} else {
|
| 1270 |
$id_command = 'blkid -o udev -s LABEL -s UUID -s TYPE';
|
| 1271 |
}
|
| 1272 |
for (`blkid -o device`) {
|
| 1273 |
chomp;
|
| 1274 |
my $bdev = $_;
|
| 1275 |
for (`$id_command '$bdev'`) {
|
| 1276 |
if (/^ID_FS_(LABEL|UUID)_ENC=(.+)\n$/) {
|
| 1277 |
add_tag($bdev, $1, $2);
|
| 1278 |
} elsif (/^ID_FS_TYPE=(.+)\n$/ && exists($bdev_map{$bdev})) {
|
| 1279 |
$bdev_map{$bdev}->{type} //= $1;
|
| 1280 |
}
|
| 1281 |
}
|
| 1282 |
}
|
| 1283 |
|
| 1284 |
# Discard UUIDs for LVM2 PVs, as we assume there are symlinks for all
|
| 1285 |
# UUIDs under /dev/disk/by-uuid and this is not true for PVs.
|
| 1286 |
# Discard all labels and UUIDs(!) that are ambiguous.
|
| 1287 |
# Discard all labels with 'unsafe' characters (escaped by blkid using
|
| 1288 |
# backslashes) as they will not be usable in all configuration files.
|
| 1289 |
# Similarly for '#' which blkid surprisingly does not consider unsafe.
|
| 1290 |
# Sort each device's IDs in reverse lexical order so that UUIDs are
|
| 1291 |
# preferred.
|
| 1292 |
for my $bdev (keys(%bdev_map)) {
|
| 1293 |
if ($bdev_map{$bdev}->{type} eq 'LVM2_member') {
|
| 1294 |
@{$bdev_map{$bdev}->{ids}} = ();
|
| 1295 |
} else {
|
| 1296 |
@{$bdev_map{$bdev}->{ids}} =
|
| 1297 |
sort({$b cmp $a}
|
| 1298 |
grep({ @{$id_map{$_}} == 1 && $_ !~ /[\\#]/ }
|
| 1299 |
@{$bdev_map{$bdev}->{ids}}));
|
| 1300 |
}
|
| 1301 |
}
|
| 1302 |
|
| 1303 |
# Add persistent aliases for CD/DVD/BD drives
|
| 1304 |
my $cd_rules =
|
| 1305 |
new FileHandle('/etc/udev/rules.d/70-persistent-cd.rules', 'r');
|
| 1306 |
while (defined($cd_rules)) {
|
| 1307 |
my @keys = udev_next($cd_rules);
|
| 1308 |
last if $#keys < 0;
|
| 1309 |
|
| 1310 |
my ($path, $symlink) = udev_parse_symlink_rule(@keys);
|
| 1311 |
if (defined($path) && defined($symlink)) {
|
| 1312 |
$symlink =~ s{^(?!/)}{/dev/};
|
| 1313 |
my $bdev = readlink($symlink) or next;
|
| 1314 |
$bdev =~ s{^(?!/)}{/dev/};
|
| 1315 |
if (exists($bdev_map{$bdev})) {
|
| 1316 |
push @{$bdev_map{$bdev}->{ids}}, $symlink;
|
| 1317 |
}
|
| 1318 |
}
|
| 1319 |
}
|
| 1320 |
}
|
| 1321 |
|
| 1322 |
sub assign_new_ids {
|
| 1323 |
my $hostname = (POSIX::uname())[1];
|
| 1324 |
|
| 1325 |
# For all devices that have no alternate device ids, suggest setting
|
| 1326 |
# UUIDs, labelling them based on fstab or just using a generic label.
|
| 1327 |
for my $bdev (keys(%bdev_map)) {
|
| 1328 |
next if $#{$bdev_map{$bdev}->{ids}} >= 0;
|
| 1329 |
|
| 1330 |
my $type = $bdev_map{$bdev}->{type};
|
| 1331 |
next unless defined($type) && exists($filesystem_types{$type});
|
| 1332 |
|
| 1333 |
if (defined($filesystem_types{$type}->{set_uuid})) {
|
| 1334 |
my ($uuid_bin, $uuid);
|
| 1335 |
UUID::generate($uuid_bin);
|
| 1336 |
UUID::unparse($uuid_bin, $uuid);
|
| 1337 |
add_tag($bdev, 'UUID', $uuid, 1);
|
| 1338 |
next;
|
| 1339 |
}
|
| 1340 |
|
| 1341 |
my $label_len = $filesystem_types{$type}->{label_len};
|
| 1342 |
my $label;
|
| 1343 |
use bytes; # string lengths are in bytes
|
| 1344 |
|
| 1345 |
if (defined($bdev_map{$bdev}->{path})) {
|
| 1346 |
# Convert path/type to label; prepend hostname if possible;
|
| 1347 |
# append numeric suffix if necessary.
|
| 1348 |
|
| 1349 |
my $base;
|
| 1350 |
if ($bdev_map{$bdev}->{path} =~ m|^/|) {
|
| 1351 |
$base = $bdev_map{$bdev}->{path};
|
| 1352 |
} else {
|
| 1353 |
$base = $bdev_map{$bdev}->{type};
|
| 1354 |
}
|
| 1355 |
$base =~ s/[^\w]+/-/g;
|
| 1356 |
$base =~ s/^-//g;
|
| 1357 |
$base =~ s/-$//g;
|
| 1358 |
|
| 1359 |
my $n = 0;
|
| 1360 |
my $suffix = '';
|
| 1361 |
do {
|
| 1362 |
$label = "$hostname-$base$suffix";
|
| 1363 |
if (length($label) > $label_len) {
|
| 1364 |
$label = substr($base, 0, $label_len - length($suffix))
|
| 1365 |
. $suffix;
|
| 1366 |
}
|
| 1367 |
$n++;
|
| 1368 |
$suffix = "-$n";
|
| 1369 |
} while (exists($id_map{"LABEL=$label"}));
|
| 1370 |
} else {
|
| 1371 |
my $n = 0;
|
| 1372 |
my $suffix;
|
| 1373 |
do {
|
| 1374 |
$n++;
|
| 1375 |
$suffix = "-$n";
|
| 1376 |
$label = substr($hostname, 0, $label_len - length($suffix))
|
| 1377 |
. $suffix;
|
| 1378 |
} while (exists($id_map{"LABEL=$label"}));
|
| 1379 |
}
|
| 1380 |
|
| 1381 |
add_tag($bdev, 'LABEL', $label, 1);
|
| 1382 |
}
|
| 1383 |
}
|
| 1384 |
|
| 1385 |
sub set_new_ids {
|
| 1386 |
for my $bdev (keys(%bdev_map)) {
|
| 1387 |
my $bdev_info = $bdev_map{$bdev};
|
| 1388 |
if ($bdev_info->{new_id}) {
|
| 1389 |
my ($name, $value) = split(/=/, $bdev_info->{new_id}, 2);
|
| 1390 |
my $setter;
|
| 1391 |
if ($name eq 'UUID') {
|
| 1392 |
$setter = $filesystem_types{$bdev_info->{type}}->{set_uuid};
|
| 1393 |
} elsif ($name eq 'LABEL') {
|
| 1394 |
$setter = $filesystem_types{$bdev_info->{type}}->{set_label};
|
| 1395 |
}
|
| 1396 |
defined($setter) or die "internal error: invalid new_id type";
|
| 1397 |
&{$setter}($bdev, $value);
|
| 1398 |
}
|
| 1399 |
}
|
| 1400 |
}
|
| 1401 |
|
| 1402 |
sub update_config {
|
| 1403 |
my $map = shift;
|
| 1404 |
|
| 1405 |
for my $match (@_) {
|
| 1406 |
# Generate a new config
|
| 1407 |
my $path = $match->{config}->{path};
|
| 1408 |
my $old = new FileHandle($path, 'r') or die "$!";
|
| 1409 |
my $new = new FileHandle("$path.new", POSIX::O_WRONLY | POSIX::O_CREAT,
|
| 1410 |
0600)
|
| 1411 |
or die "$!";
|
| 1412 |
&{$match->{config}->{update}}($old, $new, $map);
|
| 1413 |
$old->close();
|
| 1414 |
$new->close();
|
| 1415 |
|
| 1416 |
# New config should have same permissions as the old
|
| 1417 |
my (undef, undef, $mode, undef, $uid, $gid) = stat($path) or die "$!";
|
| 1418 |
chown($uid, $gid, "$path.new") or die "$!";
|
| 1419 |
chmod($mode & 07777, "$path.new") or die "$!";
|
| 1420 |
|
| 1421 |
# Back up the old config and replace with the new
|
| 1422 |
my $old_path = $path . ($match->{config}->{suffix} || '.old');
|
| 1423 |
unlink($old_path);
|
| 1424 |
link($path, $old_path) or die "$!";
|
| 1425 |
rename("$path.new", $path) or die "$!";
|
| 1426 |
|
| 1427 |
# If the package is installed, run the post-update function
|
| 1428 |
if ($match->{installed} && $match->{config}->{post_update}) {
|
| 1429 |
&{$match->{config}->{post_update}}();
|
| 1430 |
}
|
| 1431 |
}
|
| 1432 |
}
|
| 1433 |
|
| 1434 |
sub transition {
|
| 1435 |
use Debconf::Client::ConfModule ':all';
|
| 1436 |
|
| 1437 |
%bdev_map = ();
|
| 1438 |
%id_map = ();
|
| 1439 |
|
| 1440 |
my @found_configs = scan_config_files();
|
| 1441 |
my @matched_configs = grep({$_->{needs_update}} @found_configs);
|
| 1442 |
my @auto_configs = grep({defined($_->{config}->{update})} @matched_configs);
|
| 1443 |
my $found_boot_loader =
|
| 1444 |
grep({$_->{config}->{is_boot_loader} && $_->{installed}} @found_configs);
|
| 1445 |
my %update_map = ();
|
| 1446 |
|
| 1447 |
# We can skip all of this if we didn't find any configuration
|
| 1448 |
# files that need conversion and we found the configuration file
|
| 1449 |
# for an installed boot loader.
|
| 1450 |
if (!@matched_configs && $found_boot_loader) {
|
| 1451 |
return;
|
| 1452 |
}
|
| 1453 |
|
| 1454 |
my ($question, $answer, $ret, $seen);
|
| 1455 |
|
| 1456 |
$question = 'linux-base/disk-id-convert-auto';
|
| 1457 |
($ret, $seen) = input('high', $question);
|
| 1458 |
if ($ret && $ret != 30) {
|
| 1459 |
die "Error setting debconf question $question: $seen";
|
| 1460 |
}
|
| 1461 |
($ret, $seen) = go();
|
| 1462 |
if ($ret && $ret != 30) {
|
| 1463 |
die "Error asking debconf question $question: $seen";
|
| 1464 |
}
|
| 1465 |
($ret, $answer) = get($question);
|
| 1466 |
die "Error retrieving answer for $question: $answer" if $ret;
|
| 1467 |
|
| 1468 |
if (@auto_configs && $answer eq 'true') {
|
| 1469 |
scan_devices();
|
| 1470 |
assign_new_ids();
|
| 1471 |
|
| 1472 |
# Construct the device ID update map
|
| 1473 |
for my $bdev (keys(%bdev_map)) {
|
| 1474 |
if (@{$bdev_map{$bdev}->{ids}}) {
|
| 1475 |
$update_map{$bdev} = $bdev_map{$bdev}->{ids}->[0];
|
| 1476 |
}
|
| 1477 |
}
|
| 1478 |
|
| 1479 |
# Weed out configurations which will be unaffected by this
|
| 1480 |
# mapping or by a custom mapping described in id_map_text.
|
| 1481 |
@auto_configs = grep({ defined($_->{id_map_text}) ||
|
| 1482 |
grep({exists($update_map{$_})}
|
| 1483 |
@{$_->{devices}}) }
|
| 1484 |
@auto_configs);
|
| 1485 |
}
|
| 1486 |
|
| 1487 |
if (@auto_configs && $answer eq 'true') {
|
| 1488 |
if (grep({$bdev_map{$_}->{new_id}} keys(%bdev_map))) {
|
| 1489 |
$question = 'linux-base/disk-id-convert-plan';
|
| 1490 |
($ret, $seen) = subst($question, 'relabel',
|
| 1491 |
join("\\n",
|
| 1492 |
map({sprintf("%s: %s",
|
| 1493 |
$_, $bdev_map{$_}->{new_id})}
|
| 1494 |
grep({$bdev_map{$_}->{new_id}}
|
| 1495 |
keys(%bdev_map)))));
|
| 1496 |
die "Error setting debconf substitutions in $question: $seen" if $ret;
|
| 1497 |
} else {
|
| 1498 |
$question = 'linux-base/disk-id-convert-plan-no-relabel';
|
| 1499 |
}
|
| 1500 |
($ret, $seen) = subst($question, 'id_map',
|
| 1501 |
join("\\n",
|
| 1502 |
map({sprintf("%s: %s", $_, $update_map{$_})}
|
| 1503 |
keys(%update_map)),
|
| 1504 |
grep({defined}
|
| 1505 |
map({$_->{id_map_text}} @auto_configs))));
|
| 1506 |
die "Error setting debconf substitutions in $question: $seen" if $ret;
|
| 1507 |
($ret, $seen) = subst($question, 'files',
|
| 1508 |
join(', ',
|
| 1509 |
map({$_->{config}->{path}} @auto_configs)));
|
| 1510 |
die "Error setting debconf substitutions in $question: $seen" if $ret;
|
| 1511 |
($ret, $seen) = input('high', $question);
|
| 1512 |
if ($ret && $ret != 30) {
|
| 1513 |
die "Error setting debconf question $question: $seen";
|
| 1514 |
}
|
| 1515 |
($ret, $seen) = go();
|
| 1516 |
if ($ret && $ret != 30) {
|
| 1517 |
die "Error asking debconf question $question: $seen";
|
| 1518 |
}
|
| 1519 |
($ret, $answer) = get($question);
|
| 1520 |
die "Error retrieving answer for $question: $answer" if $ret;
|
| 1521 |
|
| 1522 |
if ($answer eq 'true') {
|
| 1523 |
set_new_ids();
|
| 1524 |
update_config(\%update_map, @auto_configs);
|
| 1525 |
}
|
| 1526 |
}
|
| 1527 |
|
| 1528 |
my @unconv_files = ();
|
| 1529 |
for my $match (@matched_configs) {
|
| 1530 |
if (!defined($match->{config}->{update})) {
|
| 1531 |
push @unconv_files, $match->{config}->{path};
|
| 1532 |
} else {
|
| 1533 |
my @unconv_bdevs = grep({!exists($update_map{$_})}
|
| 1534 |
@{$match->{devices}});
|
| 1535 |
if (@unconv_bdevs) {
|
| 1536 |
push @unconv_files, sprintf('%s: %s', $match->{config}->{path},
|
| 1537 |
join(', ',@unconv_bdevs));
|
| 1538 |
}
|
| 1539 |
}
|
| 1540 |
}
|
| 1541 |
if (@unconv_files) {
|
| 1542 |
$question = 'linux-base/disk-id-manual';
|
| 1543 |
($ret, $seen) = subst($question, 'unconverted',
|
| 1544 |
join("\\n", @unconv_files));
|
| 1545 |
die "Error setting debconf substitutions in $question: $seen" if $ret;
|
| 1546 |
($ret, $seen) = input('high', $question);
|
| 1547 |
if ($ret && $ret != 30) {
|
| 1548 |
die "Error setting debconf note $question: $seen";
|
| 1549 |
}
|
| 1550 |
($ret, $seen) = go();
|
| 1551 |
if ($ret && $ret != 30) {
|
| 1552 |
die "Error showing debconf note $question: $seen";
|
| 1553 |
}
|
| 1554 |
}
|
| 1555 |
|
| 1556 |
# Also note whether some (unknown) boot loader configuration file
|
| 1557 |
# must be manually converted.
|
| 1558 |
if (!$found_boot_loader) {
|
| 1559 |
$question = 'linux-base/disk-id-manual-boot-loader';
|
| 1560 |
($ret, $seen) = input('high', $question);
|
| 1561 |
if ($ret && $ret != 30) {
|
| 1562 |
die "Error setting debconf note $question: $seen";
|
| 1563 |
}
|
| 1564 |
($ret, $seen) = go();
|
| 1565 |
if ($ret && $ret != 30) {
|
| 1566 |
die "Error showing debconf note $question: $seen";
|
| 1567 |
}
|
| 1568 |
}
|
| 1569 |
}
|
| 1570 |
|
| 1571 |
package main;
|
| 1572 |
|
| 1573 |
capb('escape');
|
| 1574 |
|
| 1575 |
sub compare_versions {
|
| 1576 |
return $AptPkg::Config::_config->system->versioning->compare(@_);
|
| 1577 |
}
|
| 1578 |
|
| 1579 |
# No upgrade work is necessary during a fresh system installation.
|
| 1580 |
# But since linux-base is a new dependency of linux-image-* and did
|
| 1581 |
# not exist until needed for the libata transition, we cannot simply
|
| 1582 |
# test whether this is a fresh installation of linux-base. Instead,
|
| 1583 |
# we test:
|
| 1584 |
# - does /etc/fstab exist yet (this won't even work without it), and
|
| 1585 |
# - are any linux-image-* packages installed yet?
|
| 1586 |
sub is_fresh_installation {
|
| 1587 |
if (-f '/etc/fstab') {
|
| 1588 |
for (`dpkg-query 2>/dev/null --showformat '\${status}\\n' -W 'linux-image-*'`) {
|
| 1589 |
return 0 if / installed\n$/;
|
| 1590 |
}
|
| 1591 |
}
|
| 1592 |
return 1;
|
| 1593 |
}
|
| 1594 |
|
| 1595 |
my $deb_arch = `dpkg --print-architecture`;
|
| 1596 |
chomp $deb_arch;
|
| 1597 |
|
| 1598 |
if ($deb_arch ne 's390') {
|
| 1599 |
my $libata_transition_ver =
|
| 1600 |
($deb_arch eq 'i386' || $deb_arch eq 'amd64') ? '2.6.32-10' : '2.6.32-11';
|
| 1601 |
if ($ARGV[0] eq 'reconfigure' || defined($ENV{DEBCONF_RECONFIGURE}) ||
|
| 1602 |
(!is_fresh_installation() &&
|
| 1603 |
compare_versions($ARGV[1], $libata_transition_ver) < 0)) {
|
| 1604 |
DebianKernel::DiskId::transition();
|
| 1605 |
}
|
| 1606 |
}
|
| 1607 |
|
| 1608 |
exec("set -e\nset -- @ARGV\n" . << 'EOF');
|
| 1609 |
#DEBHELPER#
|
| 1610 |
EOF
|
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