ea7a5f5b60
- Add kernel-syms to list of packages to remove with purge-kernels (bsc#1104090). - Skip kernels that cannot be removed by purge-kernels due to dependencies and continue removing other kernels (bsc#1104090). - Fix finding btrfs devices (bsc#1104178). * add 0574-s-find_btrfs_devs-btrfs_devs.patch OBS-URL: https://build.opensuse.org/request/show/634785 OBS-URL: https://build.opensuse.org/package/show/Base:System/dracut?expand=0&rev=354
370 lines
9.0 KiB
Perl
370 lines
9.0 KiB
Perl
#!/usr/bin/perl
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use strict;
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use warnings;
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use Getopt::Long;
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sub usage {
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print "Usage: $0 [--test]\n";
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print "Reads list of kernels to keep from /etc/zypp/zypp.conf:multiversion.kernels\n";
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print "kernels can be given as <version>, latest(-N), running, oldest(+N).\n";
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}
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# arch/flavor => version-release => [ subpackages ]
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my %kernels;
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my @keep_spec;
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my ($want_running, $running_version, $running_flavor);
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# do not actually delete anything
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my $test_only;
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# undocumented debugging options
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my ($fake_config, $fake_rpm_qa, $fake_uname_r, $fake_uname_m);
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sub get_config_line {
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my $file = "/etc/zypp/zypp.conf";
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if ($fake_config) {
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return $fake_config;
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}
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if (!-e $file) {
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print STDERR "$0: /etc/zypp/zypp.conf does not exist, exiting.\n";
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exit 0;
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}
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open(my $fh, '<', $file) or die "$0: $file: $!\n";
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while (<$fh>) {
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chomp;
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next unless /^\s*multiversion\.kernels\b/;
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s/^[^=]*=\s*//;
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close($fh);
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return $_;
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}
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close($fh);
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return "";
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}
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sub load_config {
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my @kernels;
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@kernels = split(/,\s*/, get_config_line());
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for my $kernel (@kernels) {
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if ($kernel =~ /^\s*(latest|oldest|running)(\s*[-+]\s*\d+)?\s*$/) {
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my $new = { whence => $1, offset => $2 || 0 };
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$new->{offset} =~ s/\s*//g;
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if ($new->{whence} eq "running") {
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$want_running = 1;
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}
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push (@keep_spec, $new);
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} elsif ($kernel =~ /^\d+\.\d+/) {
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my $new = { version => $kernel };
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push (@keep_spec, $new);
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} elsif ($kernel =~ /^\s*$/) {
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next;
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} else {
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print STDERR "$0: Ignoring unknow kernel specification in\n";
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print STDERR "/etc/zypp/zypp.conf:multiversion.kernels: $kernel\n";
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}
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}
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}
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sub add_package {
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my ($name, $vr, $arch) = @_;
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(my $flavor = $name) =~ s/^kernel-//;
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#print STDERR "add_package: $name $vr $arch\n";
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if ($name eq "kernel-firmware" || $name eq "kernel-coverage") {
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return;
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}
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# Put all subpackages into the same group, except for
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# kernel-source-{vanilla,rt}, which are packages on their own
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if ($flavor !~ /^source/) {
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$flavor =~ s/-.*//; # XXX: No dashes in flavor names
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}
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# kernel-devel is a subpackage of kernel-source
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$flavor =~ s/^devel/source/;
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$kernels{"$arch/$flavor"} ||= {};
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$kernels{"$arch/$flavor"}{$vr} ||= [];
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push(@{$kernels{"$arch/$flavor"}{$vr}}, "$name-$vr.$arch");
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}
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sub load_packages {
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my $pipe;
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if ($fake_rpm_qa) {
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open($pipe, '<', $fake_rpm_qa) or die "$fake_rpm_qa: $!\n";
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} else {
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open($pipe, '-|', 'rpm', '-qa', '--qf',
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'%{n} %{v}-%{r} %{arch}\n', 'kernel-*') or die "rpm: $!\n";
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}
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while (<$pipe>) {
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chomp;
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my ($name, $vr, $arch) = split;
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add_package($name, $vr, $arch);
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}
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close($pipe)
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}
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sub sort_versions {
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my @versions = @_;
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pipe (my $read, my $write);
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my $pid = fork();
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if (!defined($pid)) {
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die "Cannot fork: $!\n";
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} elsif ($pid == 0) {
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# child
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close($read);
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open STDOUT, '>&', $write;
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open(my $fh, '|-', "/usr/lib/rpm/rpmsort") or die "/usr/lib/rpm/rpmsort: $!\n";
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print $fh join("\n", @versions), "\n";
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close($fh);
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die "rpmsort failed ($?)\n" if $? != 0;
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exit 0;
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}
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# parent
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close($write);
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@versions = <$read>;
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chomp @versions;
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close($read);
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waitpid($pid, 0);
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die "rpmsort failed ($?)\n" if $? != 0;
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return @versions;
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}
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# return true if VER1 == VER2 or VER1 == (VER2 minus rebuild counter)
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sub version_match {
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my ($ver1, $ver2) = @_;
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return 1 if $ver1 eq $ver2;
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# copied from kernel-source/rpm/kernel-spec-macros
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$ver2 =~ s/\.[0-9]+($|\.[^.]*[^.0-9][^.]*$)/$1/;
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return $ver1 eq $ver2;
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}
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sub list_old_versions {
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my ($flavor) = @_;
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my $is_source = $flavor =~ /\/(source|syms)/;
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my $kernels = $kernels{$flavor};
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my @versions = sort_versions(keys(%$kernels));
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my %idx = (
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oldest => 0,
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latest => scalar(@versions) - 1,
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);
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if ($want_running && ($running_flavor eq $flavor || $is_source)) {
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for (my $i = scalar(@versions) - 1; $i >= 0; $i--) {
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if (version_match($running_version, $versions[$i])) {
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$idx{running} = $i;
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last;
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}
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}
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if (!exists($idx{running}) && !$is_source) {
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print STDERR "$0: Running kernel $running_version-$running_flavor not installed.\n";
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print "NOT removing any packages for flavor $flavor.\n";
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return;
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}
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}
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my %delete = map { $_ => 1 } @versions;
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for my $keep (@keep_spec) {
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if ($keep->{version}) {
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for my $ver (@versions) {
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if (version_match($keep->{version}, $ver)) {
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$delete{$ver} = 0;
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}
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}
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} elsif ($keep->{whence}) {
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next unless exists($idx{$keep->{whence}});
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my $idx = $idx{$keep->{whence}};
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$idx += $keep->{offset};
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next unless $idx >= 0 && $idx < scalar(@versions);
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$delete{$versions[$idx]} = 0;
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} else {
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die "??";
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}
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}
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return grep { $delete{$_} } @versions;
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}
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sub package_exists {
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my ($version, $archs, $flavors) = @_;
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for my $arch (@$archs) {
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for my $flavor (@$flavors) {
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my $config = "$arch/$flavor";
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if (exists($kernels{$config})
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&& exists($kernels{$config}->{$version})) {
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return 1;
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}
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}
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}
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return 0;
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}
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sub list_old_packages {
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my (@packages, @archs, @flavors);
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my (@syms_flavors, @binary_flavors, @source_configs);
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# there are some inter-dependencies among the kernel packages,
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# so we have to be careful
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my %t = map { s:/.*::; $_ => 1 } keys(%kernels);
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@archs = sort(keys(%t));
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%t = map { s:.*/::; $_ => 1 } keys(%kernels);
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@flavors = sort(keys(%t));
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@syms_flavors = grep { /^syms/ } @flavors;
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@binary_flavors = grep { !/^(source|syms)/ } @flavors;
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@source_configs = grep { /\/source/ } sort(keys(%kernels));
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for my $arch (@archs) {
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for my $flavor (@syms_flavors) {
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my $config = "$arch/$flavor";
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next unless exists($kernels{$config});
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my @versions = list_old_versions($config);
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for my $ver (@versions) {
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push(@packages, @{$kernels{$config}->{$ver}});
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delete($kernels{$config}->{$ver});
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}
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}
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for my $flavor (@binary_flavors) {
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my $config = "$arch/$flavor";
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next unless exists($kernels{$config});
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my @versions = list_old_versions($config);
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for my $ver (@versions) {
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my @pacs = @{$kernels{$config}->{$ver}};
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my $remove_all = 1;
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# do not remove kernel-$flavor-devel-$ver
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# if kernel-syms-$ver still exists
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if (grep { /-devel$/ } @pacs) {
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my $syms = "syms";
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if ($flavor =~ /^rt/) {
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$syms = "syms-rt";
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}
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if (exists($kernels{$syms}->{$ver})) {
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$remove_all = 0;
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@pacs = grep { !/-devel$/ }
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@pacs;
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}
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}
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push(@packages, @pacs);
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if ($remove_all) {
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delete($kernels{$config}->{$ver});
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}
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}
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}
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}
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for my $config (@source_configs) {
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my @versions = list_old_versions($config);
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for my $ver (@versions) {
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# Remove kernel-{devel,source} only if no other package
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# of the same version exists
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next if package_exists($ver, \@archs, \@binary_flavors);
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push(@packages, @{$kernels{$config}->{$ver}});
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}
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}
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return @packages;
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}
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sub remove_packages {
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my @packages = @_;
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while (1) {
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pipe(my $read, my $write);
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my $pid = fork();
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if (!defined($pid)) {
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die "Cannot fork: $!\n";
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} elsif($pid == 0) {
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# child
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close($read);
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open STDOUT, '>&', $write;
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open STDERR, '>&', $write;
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$ENV{LC_ALL} = "C";
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my @cmd = qw(rpm -e);
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push(@cmd, "--test") if $test_only;
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exec(@cmd, @packages) or die "rpm: $!\n";
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}
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# parent
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close($write);
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my @out = <$read>;
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chomp @out;
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close($read);
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waitpid($pid, 0);
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if ($? == 0) {
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print "Removed:\n ", join("\n ", @packages), "\n";
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return 1;
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}
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my ($retry, @problems);
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my %old_packages = map { $_ => 1 } @packages;
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my %new_packages;
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for (@out) {
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if (/ is needed by \(installed\) (kernel-syms-.*|kgraft-patch-.*|kernel-livepatch-.*|.*-kmp-.*)/ &&
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!$old_packages{$1}) {
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push(@packages, $1) unless $new_packages{$1};
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$new_packages{$1} = 1;
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$retry = 1;
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} elsif (/([^ \t]*) = ([^ \t]*) is needed by \(installed\) /) {
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print STDERR "$0: $_\n";
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@packages = grep ! /$1-$2/, @packages;
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$retry = 1;
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} else {
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push(@problems, $_);
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}
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}
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if (!$retry) {
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print STDERR join("\n", @problems), "\n";
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print STDERR "$0: giving up.\n";
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return 0;
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}
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}
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}
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if (!GetOptions(
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"h|help" => sub { usage(); exit; },
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"--test" => \$test_only,
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"--fake-config=s" => \$fake_config,
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"--fake-rpm-qa=s" => \$fake_rpm_qa,
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"--fake-uname-r=s" => \$fake_uname_r,
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"--fake-uname-m=s" => \$fake_uname_m)) {
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usage();
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exit 1;
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}
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load_config();
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if (!@keep_spec) {
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print STDERR "$0: multiversion.kernels not configured in /etc/zypp/zypp.conf, exiting.\n";
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exit 0;
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}
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load_packages();
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if ($want_running) {
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$running_version = $fake_uname_r ? $fake_uname_r : `uname -r`;
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chomp($running_version);
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($running_flavor = $running_version) =~ s/.*-//;
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$running_version =~ s/-[^-]*$//;
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(my $release = $running_version) =~ s/.*-//;
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$running_version =~ s/-[^-]*$//;
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# copied from kernel-source/rpm/mkspec
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$running_version =~ s/\.0-rc/.rc/;
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$running_version =~ s/-rc\d+//;
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$running_version =~ s/-/./g;
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$running_version .= "-$release";
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my $arch = $fake_uname_m ? $fake_uname_m : `uname -m`;
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chomp($arch);
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$arch =~ s/^i.86$/i586/;
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$running_flavor = "$arch/$running_flavor";
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}
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my @remove = list_old_packages();
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if (!@remove) {
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print STDERR "$0: Nothing to do.\n";
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exit 0;
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}
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if (remove_packages(@remove)) {
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exit 0;
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}
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exit 1;
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