Current File : //usr/share/perl5/NeedRestart/CONT/LXC.pm
# needrestart - Restart daemons after library updates.
#
# Authors:
# Thomas Liske <thomas@fiasko-nw.net>
#
# Copyright Holder:
# 2013 - 2020 (C) Thomas Liske [http://fiasko-nw.net/~thomas/]
#
# License:
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this package; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
package NeedRestart::CONT::LXC;
use strict;
use warnings;
use parent qw(NeedRestart::CONT);
use NeedRestart qw(:cont);
use NeedRestart::Utils;
my $LOGPREF = '[LXC]';
needrestart_cont_register(__PACKAGE__)
unless($<);
sub new {
my $class = shift;
my $self = $class->SUPER::new(@_);
die "Could not get NS PID of #1!\n" unless(defined($self->{nspid}));
$self->{lxc} = {};
$self->{lxd} = {};
if (-d q(/snap/lxd)) {
$self->{has_lxd} = 1;
$self->{lxd_bin} = q(/snap/bin/lxc);
$self->{lxd_container_path} = q(/var/snap/lxd/common/lxd/containers);
print STDERR "$LOGPREF LXD installed via snap\n" if($self->{debug});
} else {
$self->{has_lxd} = -x q(/usr/bin/lxc);
$self->{lxd_bin} = q(/usr/bin/lxc);
$self->{lxd_container_path} = q(/var/lib/lxd/containers);
}
return bless $self, $class;
}
sub check {
my $self = shift;
my $pid = shift;
my $bin = shift;
my $norestart = shift;
my $ns = $self->get_nspid($pid);
# stop here if no dedicated PID namespace is used
return 0 if(!$ns || $ns == $self->{nspid});
unless(open(FCG, qq(/proc/$pid/cgroup))) {
print STDERR "$LOGPREF #$pid: unable to open cgroup ($!)\n" if($self->{debug});
return 0;
}
my $cg;
{
local $/;
$cg = <FCG>;
close(FCG);
}
# look for LXC cgroups
return unless($cg =~ /^\d+:[^:]*:\/lxc(?:.payload)?[.\/]([^\/\n]+)($|\/)/m);
my $name = $1;
my $type = ($self->{has_lxd} && -d qq($self->{lxd_container_path}/$name) ? 'LXD' : 'LXC');
unless($norestart) {
print STDERR "$LOGPREF #$pid is part of $type container '$name' and should be restarted\n" if($self->{debug});
$self->{lc($type)}->{$name}++;
}
else {
print STDERR "$LOGPREF #$pid is part of $type container '$name'\n" if($self->{debug});
}
return 1;
}
sub get {
my $self = shift;
sub lxd_restart_with_project {
my ($bin, $container) = @_;
my @parts = split(/_/, $container);
if ($#parts == 1) {
return [ $bin, 'restart', qq(--project=$parts[0]), $parts[1] ];
} else {
[ $bin, 'restart', $container ]
}
}
return (map {
($_ => [qw(lxc-stop --reboot --name), $_]);
} keys %{ $self->{lxc} }), (map {
($_ => lxd_restart_with_project($self->{lxd_bin}, $_));
} keys %{ $self->{lxd} });
}
1;
Mini Shell