src/lxc-pve-mount-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 PVE::LXCSetup;
  18 use Data::Dumper;
  19
  20 use base qw(PVE::CLIHandler);
  21
  22 $ENV{'PATH'} = '/sbin:/bin:/usr/sbin:/usr/bin';
  23
  24 initlog ('lxc-pve-mount-hook');
  25
  26 die "please run as root\n" if $> != 0;
  27
  28 PVE::INotify::inotify_init();
  29
  30 my $rpcenv = PVE::RPCEnvironment->init('cli');
  31 $rpcenv->set_language($ENV{LANG});
  32 $rpcenv->set_user('root@pam');
  33
  34 # we cannot use cfs_read here (permission problem)
  35 #$rpcenv->init_request();
  36
  37 my $nodename = PVE::INotify::nodename();
  38
  39 __PACKAGE__->register_method ({
  40     name => 'lxc-pve-mount-hook',
  41     path => 'lxc-pve-mount-hook',
  42     method => 'GET',
  43     description => "Create a new container root directory.",
  44     parameters => {
  45         additionalProperties => 0,
  46         properties => {
  47             name => {
  48                 description => "The container name. This hook is only active for containers using numeric IDs, where configuration is stored on /etc/pve/lxc/<name>/config (else it is just a NOP).",
  49                 type => 'string',
  50                 pattern => '\S+',
  51                 maxLength => 64,
  52             },
  53             path => {
  54                 description => "The path to the container configuration directory (LXC internal argument - do not pass manually!).",
  55                 type => 'string',
  56             },
  57             rootfs => {
  58                 description => "The path to the container's rootfs (LXC internal argument - do not pass manually!)",
  59                 type => 'string',
  60             },
  61         },
  62     },
  63     returns => { type => 'null' },
  64
  65     code => sub {
  66         my ($param) = @_;
  67
  68         my $private = $param->{rootfs};
  69
  70         return undef if $param->{name} !~ m/^\d+$/;
  71
  72         # Note: PVE::INotify::nodename() returns wrong value when run
  73         # inside container mount hook, so we cannot simply
  74         # use PVE::LXC::load_conf().
  75
  76         my $config_filename = "/etc/pve/lxc/$param->{name}.conf";
  77
  78         return undef if ! -f $config_filename;
  79
  80         my $raw = PVE::Tools::file_get_contents($config_filename);
  81         my $conf = PVE::LXC::parse_pct_config($config_filename, $raw);
  82
  83         my $mountpoint = $ENV{LXC_ROOTFS_MOUNT};
  84
  85         my $lxc_setup = PVE::LXCSetup->new($conf, $mountpoint);
  86         $lxc_setup->pre_start_hook();
  87
  88         return undef;
  89     }});
  90
  91
  92 push @ARGV, 'help' if !scalar(@ARGV);
  93
  94 my $param = {};
  95
  96 if ((scalar(@ARGV) == 1) && ($ARGV[0] eq 'printmanpod') ||
  97     ($ARGV[0] eq 'verifyapi')) {
  98     # OK
  99 } elsif ((scalar(@ARGV) == 3) && ($ARGV[1] eq 'lxc') && ($ARGV[2] eq 'mount')) {
 100     $param->{name} = $ENV{'LXC_NAME'};
 101     die "got wrong name" if $param->{name} ne $ARGV[0];
 102
 103     $param->{path} = $ENV{'LXC_CONFIG_FILE'};
 104     $param->{rootfs} = $ENV{'LXC_ROOTFS_PATH'};
 105     @ARGV = ();
 106 } else {
 107     @ARGV = ('help');
 108 }
 109
 110 my $cmddef = [ __PACKAGE__, 'lxc-pve-mount-hook', [], $param];
 111
 112 PVE::CLIHandler::handle_simple_cmd($cmddef, \@ARGV, undef, $0);
 113
 114 exit 0;
 115
 116 __END__
 117
 118 =head1 NAME
 119
 120 lxc-pve - LXC mount hook for Proxmox VE
 121
 122 =head1 SYNOPSIS
 123
 124 =include synopsis
 125
 126 =head1 DESCRIPTION
 127
 128 This mount hook sets the network and hostname for pve container.
 129
 130 =head1 SEE ALSO
 131
 132 lct(1)
 133
 134 =include pve_copyright