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- #!/usr/bin/perl
-
- use strict;
- use warnings;
-
- my %gettys;
- my $have_cad = 0;
-
-
- #-----------------------------------------------------------------------------#
- # Parse /etc/inittab
- #-----------------------------------------------------------------------------#
-
- open INITTAB, "/etc/inittab"
- or die "Unable to open /etc/inittab: $!";
-
- while (<INITTAB>) {
- chomp;
- s/^\s*//;
-
- next if /^\#/;
- next unless length;
-
- my ($id, $rlevel, $action, $process) = split /:/, $_, 4;
-
- warn "missing id field" and next
- unless defined $id and length $id;
- warn "missing runlevel field" and next
- unless defined $rlevel;
- warn "missing action field" and next
- unless defined $action and length $action;
- warn "missing process field" and next
- unless defined $process;
-
-
- $have_cad = 1 if $action eq "ctrlaltdel";
- $gettys{$1} = [ $rlevel, $process ] if $process =~ /getty.*\b(tty\w+)/;
- }
-
- close INITTAB
- or warn "Error while closing /etc/inittab: $!";
-
-
- #-----------------------------------------------------------------------------#
- # Alter /etc/event.d
- #-----------------------------------------------------------------------------#
-
- unlink "/etc/init/control-alt-delete.conf"
- unless $have_cad;
-
- foreach (qw/tty1 tty2 tty3 tty4 tty5 tty6/) {
- unlink "/etc/init/$_.conf"
- unless exists $gettys{$_};
- }
-
- foreach (sort keys %gettys) {
- my ($rlevel, $process) = @{$gettys{$_}};
-
- my @job;
- if (-f "/etc/event.d/$_") {
- open JOB, "/etc/event.d/$_"
- or warn "Unable to open /etc/event.d/$_: $!" and next;
- @job = <JOB>;
- chomp @job;
- close JOB
- or warn "Error while closing /etc/event,d/$_: $!" and next;
-
- foreach my $rl (qw/2 3 4 5/) {
- my $idx;
- for ($idx = 0; $idx < @job; $idx++) {
- last if $job[$idx] =~ /^\s*(start|stop)\s+on\s+runlevel\s+$rl\b/;
- }
-
- if ($idx < @job) {
- if ($rlevel =~ /$rl/) {
- $job[$idx] =~ s/^(\s*)stop(\s+)/$1start$2/;
- } else {
- $job[$idx] =~ s/^(\s*)start(\s+)/$1stop$2/;
- }
- } else {
- if ($rlevel =~ /$rl/) {
- push @job, "start on runlevel $rl";
- } else {
- push @job, "stop on runlevel $rl";
- }
- }
- }
-
- my $idx;
- for ($idx = 0; $idx < @job; $idx++) {
- last if $job[$idx] =~ /^\s*respawn\s*/; # match bare 'respawn' too
- }
-
- if ($idx < @job) {
- # only match old-style 'respawn process', not bare 'respawn'
- $job[$idx] =~ s/^(\s*respawn\s+).*/$1$process/;
- } else {
- push @job, "respawn";
- push @job, "exec $process";
- }
-
- # Try to fix up effects of previous broken migrations
- if (@job and $job[$#job] =~ /.*(.+?)exec (\1)$/) {
- $job[$#job] = "exec $1";
- }
-
- } else {
- push @job, "# $_ - getty";
- push @job, "#";
- push @job, "# Converted from /etc/inittab entry";
- push @job, "";
-
- foreach my $rl (qw/2 3 4 5/) {
- if ($rlevel =~ /$rl/) {
- push @job, "start on runlevel $rl";
- } else {
- push @job, "stop on runlevel $rl";
- }
- }
- push @job, "";
-
- push @job, "stop on shutdown";
- push @job, "";
-
- push @job, "respawn";
- push @job, "exec $process";
- }
-
- open JOB, ">/etc/event.d/.$_"
- or warn "Unable to write to /etc/event.d/.$_: $!" and next;
- print JOB map { "$_\n" } @job;
- unless (close JOB) {
- warn "Error while closing /etc/event.d/.$_: $!";
- unlink "/etc/event.d/.$_";
- next;
- }
-
- unless (rename "/etc/event.d/.$_", "/etc/event.d/$_") {
- warn "Unable to replace /etc/event.d/$_: $!";
- unlink "/etc/event.d/.$_";
- next;
- }
- }
-