src/lxc-pve-prestart-hook

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5 use POSIX;
   6 use File::Path;
   7
   8 use PVE::SafeSyslog;
   9 use PVE::Tools;
  10 use PVE::Cluster;
  11 use PVE::INotify;
  12 use PVE::RPCEnvironment;
  13 use PVE::JSONSchema qw(get_standard_option);
  14 use PVE::CLIHandler;
  15 use PVE::Storage;
  16 use PVE::LXC;
  17 use Data::Dumper;
  18
  19 use base qw(PVE::CLIHandler);
  20
  21 $ENV{'PATH'} = '/sbin:/bin:/usr/sbin:/usr/bin';
  22
  23 initlog ('lxc-pve-prestart-hook');
  24
  25 die "please run as root\n" if $> != 0;
  26
  27 PVE::INotify::inotify_init();
  28
  29 my $rpcenv = PVE::RPCEnvironment->init('cli');
  30 $rpcenv->set_language($ENV{LANG});
  31 $rpcenv->set_user('root@pam');
  32
  33 # we cannot use cfs_read here (permission problem)
  34 #$rpcenv->init_request();
  35
  36 my $nodename = PVE::INotify::nodename();
  37
  38 __PACKAGE__->register_method ({
  39     name => 'lxc-pve-prestart-hook',
  40     path => 'lxc-pve-prestart-hook',
  41     method => 'GET',
  42     description => "Create a new container root directory.",
  43     parameters => {
  44         additionalProperties => 0,
  45         properties => {
  46             name => {
  47                 description => "The container name. This hook is only active for containers using numeric IDs, where configuration is stored on /etc/pve/lxc/<name>.conf (else it is just a NOP).",
  48                 type => 'string',
  49                 pattern => '\S+',
  50                 maxLength => 64,
  51             },
  52             path => {
  53                 description => "The path to the container configuration directory (LXC internal argument - do not pass manually!).",
  54                 type => 'string',
  55             },
  56             rootfs => {
  57                 description => "The path to the container's rootfs (LXC internal argument - do not pass manually!)",
  58                 type => 'string',
  59             },
  60         },
  61     },
  62     returns => { type => 'null' },
  63
  64     code => sub {
  65         my ($param) = @_;
  66
  67         return undef if $param->{name} !~ m/^\d+$/;
  68
  69         my $rootdir = $ENV{LXC_ROOTFS_MOUNT};
  70
  71         my $vmid = $param->{name};
  72
  73         PVE::Cluster::check_cfs_quorum(); # only start if we have quorum
  74
  75         return undef if ! -f PVE::LXC::config_file($vmid);
  76
  77         my $conf = PVE::LXC::load_config($vmid);
  78
  79         my $storage_cfg = PVE::Storage::config();
  80
  81         my $vollist = [];
  82         my $loopdevlist = [];
  83
  84         PVE::LXC::foreach_mountpoint($conf, sub {
  85             my ($ms, $mountpoint) = @_;
  86
  87             my $volid = $mountpoint->{volume};
  88             return if !$volid || $volid =~ m|^/dev/.+|;
  89             push @$vollist, $volid;
  90             push @$loopdevlist, $volid if $ms ne 'rootfs';
  91         });
  92
  93         PVE::Storage::activate_volumes($storage_cfg, $vollist);
  94         PVE::LXC::attach_loops($storage_cfg, $loopdevlist);
  95         return undef;
  96     }});
  97
  98
  99 push @ARGV, 'help' if !scalar(@ARGV);
 100
 101 my $param = {};
 102
 103 if ((scalar(@ARGV) == 1) && ($ARGV[0] eq 'printmanpod') ||
 104     ($ARGV[0] eq 'verifyapi')) {
 105     # OK
 106 } elsif ((scalar(@ARGV) == 3) && ($ARGV[1] eq 'lxc') && ($ARGV[2] eq 'pre-start')) {
 107     $param->{name} = $ENV{'LXC_NAME'};
 108     die "got wrong name" if $param->{name} ne $ARGV[0];
 109
 110     $param->{path} = $ENV{'LXC_CONFIG_FILE'};
 111     $param->{rootfs} = $ENV{'LXC_ROOTFS_PATH'};
 112     @ARGV = ();
 113 } else {
 114     @ARGV = ('help');
 115 }
 116
 117 my $cmddef = [ __PACKAGE__, 'lxc-pve-prestart-hook', [], $param];
 118
 119 PVE::CLIHandler::handle_simple_cmd($cmddef, \@ARGV, undef, $0);
 120
 121 exit 0;
 122
 123 __END__
 124
 125 =head1 NAME
 126
 127 lxc-pve - LXC pre-start hook for Proxmox VE
 128
 129 =head1 SYNOPSIS
 130
 131 =include synopsis
 132
 133 =head1 DESCRIPTION
 134
 135 This mount hook activate storage and volumes for pve container.
 136
 137 =head1 SEE ALSO
 138
 139 lct(1)
 140
 141 =include pve_copyright