125 lines
3.0 KiB
Perl
Executable File
125 lines
3.0 KiB
Perl
Executable File
#! /usr/bin/perl
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#
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use strict;
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use warnings;
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use Debconf::Client::ConfModule qw(:all);
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version('2.0');
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my $capb=capb("backup");
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$|=1;
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# Predefined values:
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my $version = "=V";
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my $kimage = "=K";
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my $preinst_hook = ''; #Normally we do not
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my $kernel_arch = "=B";
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my $package_name = "linux-image-$version";
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#known variables
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my $realimageloc = "/boot/";
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my $CONF_LOC = '/etc/kernel-img.conf';
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my $modules_base = '/lib/modules';
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die "Pre inst Internal error. Aborting." unless $version;
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exit 0 if $ARGV[0] =~ /abort-upgrade/;
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exit 1 unless $ARGV[0] =~ /(install|upgrade)/;
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if (-r "$CONF_LOC" && -f "$CONF_LOC" ) {
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if (open(CONF, "$CONF_LOC")) {
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while (<CONF>) {
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chomp;
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s/\#.*$//g;
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next if /^\s*$/;
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$preinst_hook = "$1" if /preinst_hook\s*=\s*(\S+)/i;
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}
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close CONF;
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}
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}
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$ENV{KERNEL_ARCH}=$kernel_arch if $kernel_arch;
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# set the env var stem
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$ENV{'STEM'} = "linux";
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sub exec_script {
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my $type = shift;
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my $script = shift;
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print STDERR "Running $type hook script $script.\n";
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system ("$script $version $realimageloc$kimage-$version") &&
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print STDERR "User $type hook script [$script] ";
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if ($?) {
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if ($? == -1) {
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print STDERR "failed to execute: $!\n";
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}
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elsif ($? & 127) {
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printf STDERR "died with signal %d, %s coredump\n",
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($? & 127), ($? & 128) ? 'with' : 'without';
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}
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else {
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printf STDERR "exited with value %d\n", $? >> 8;
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}
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exit $? >> 8;
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}
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}
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sub run_hook {
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my $type = shift;
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my $script = shift;
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if ($script =~ m,^/,) {
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# Full path provided for the hook script
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if (-x "$script") {
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&exec_script($type,$script);
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}
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else {
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die "The provided $type hook script [$script] could not be run.\n";
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}
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}
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else {
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# Look for it in a safe path
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for my $path ('/bin', '/sbin', '/usr/bin', '/usr/sbin') {
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if (-x "$path/$script") {
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&exec_script($type, "$path/$script");
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return 0;
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}
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}
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# No luck
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print STDERR "Could not find $type hook script [$script].\n";
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die "Looked in: '/bin', '/sbin', '/usr/bin', '/usr/sbin'\n";
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}
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}
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my $options;
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for (@ARGV) {
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s,','\\'',g;
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$options .= " '$_'";
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}
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$ENV{'DEB_MAINT_PARAMS'}="$options";
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## Run user hook script here, if any
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if (-x "$preinst_hook") {
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&run_hook("preinst", $preinst_hook);
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}
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if (-d "/etc/kernel/preinst.d") {
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print STDERR "Examining /etc/kernel/preinst.d/\n";
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system ("run-parts --verbose --exit-on-error --arg=$version" .
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" --arg=$realimageloc$kimage-$version" .
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" /etc/kernel/preinst.d") &&
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die "Failed to process /etc/kernel/preinst.d";
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}
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if (-d "/etc/kernel/preinst.d/$version") {
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print STDERR "Examining /etc/kernel/preinst.d/$version.\n";
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system ("run-parts --verbose --exit-on-error --arg=$version" .
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" --arg=$realimageloc$kimage-$version" .
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" /etc/kernel/preinst.d/$version") &&
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die "Failed to process /etc/kernel/preinst.d/$version";
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}
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exit 0;
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__END__
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