Class: OsCtld::Container

Inherits:
Object
  • Object
show all
Includes:
OsCtl::Lib::Utils::Log, OsCtl::Lib::Utils::System, Assets::Definition, Lockable, Manipulable, Utils::SwitchUser
Defined in:
lib/osctld/container.rb,
lib/osctld/container/hooks.rb

Defined Under Namespace

Modules: Hook, Hooks Classes: Builder, Importer, LxcConfig, RawConfigs

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Utils::SwitchUser

#ct_attach, #ct_syscmd

Methods included from Assets::Definition

#define_assets

Methods included from Manipulable

#acquire_manipulation_lock, #init_manipulable, #is_being_manipulated?, #manipulate, #manipulated_by, #release_manipulation_lock

Methods included from Lockable

#exclusively, included, #inclusively, #init_lock, #lock, #unlock

Constructor Details

#initialize(pool, id, user = nil, group = nil, dataset = nil, opts = {}) ⇒ Container

Returns a new instance of Container.

Parameters:

  • pool (Pool)
  • id (String)
  • user (User, nil) (defaults to: nil)
  • group (Group, nil) (defaults to: nil)
  • dataset (String, nil) (defaults to: nil)
  • opts (Hash) (defaults to: {})

    options

Options Hash (opts):

  • load (Boolean)

    load config

  • load_from (String)

    load from this string instead of config file

  • staged (Boolean)

    create a staged container

  • devices (Boolean)

    determines whether devices are initialized

  • dataset_cache (OsCtl::Lib::Zfs::DatasetCache)


40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
# File 'lib/osctld/container.rb', line 40

def initialize(pool, id, user = nil, group = nil, dataset = nil, opts = {})
  init_lock
  init_manipulable

  opts[:load] = true unless opts.has_key?(:load)

  @pool = pool
  @id = id
  @user = user
  @group = group
  @dataset = dataset
  @state = opts[:staged] ? :staged : :unknown
  @ephemeral = false
  @init_pid = nil
  @netifs = NetInterface::Manager.new(self)
  @cgparams = nil
  @devices = nil
  @prlimits = nil
  @mounts = nil
  @hostname = nil
  @dns_resolvers = nil
  @nesting = false
  @seccomp_profile = nil
  @apparmor = AppArmor.new(self)
  @lxc_config = Container::LxcConfig.new(self)
  @init_cmd = nil
  @raw_configs = Container::RawConfigs.new
  @attrs = Attributes.new
  @dist_network_configured = false

  if opts[:load]
    load_opts = {
      init_devices: !opts.has_key?(:devices) || opts[:devices],
      dataset_cache: opts[:dataset_cache],
    }

    if opts[:load_from]
      load_config_string(opts[:load_from], load_opts)
    else
      load_config_file(config_path, load_opts)
    end
  end
end

Instance Attribute Details

#apparmorObject

Returns the value of attribute apparmor



21
22
23
# File 'lib/osctld/container.rb', line 21

def apparmor
  @apparmor
end

#archObject

Returns the value of attribute arch



21
22
23
# File 'lib/osctld/container.rb', line 21

def arch
  @arch
end

#attrsObject

Returns the value of attribute attrs



21
22
23
# File 'lib/osctld/container.rb', line 21

def attrs
  @attrs
end

#autostartObject

Returns the value of attribute autostart



21
22
23
# File 'lib/osctld/container.rb', line 21

def autostart
  @autostart
end

#cgparamsObject

Returns the value of attribute cgparams



21
22
23
# File 'lib/osctld/container.rb', line 21

def cgparams
  @cgparams
end

#datasetObject

Returns the value of attribute dataset



21
22
23
# File 'lib/osctld/container.rb', line 21

def dataset
  @dataset
end

#devicesObject

Returns the value of attribute devices



21
22
23
# File 'lib/osctld/container.rb', line 21

def devices
  @devices
end

#dist_network_configuredObject (protected)

Returns the value of attribute dist_network_configured



655
656
657
# File 'lib/osctld/container.rb', line 655

def dist_network_configured
  @dist_network_configured
end

#distributionObject

Returns the value of attribute distribution



21
22
23
# File 'lib/osctld/container.rb', line 21

def distribution
  @distribution
end

#dns_resolversObject

Returns the value of attribute dns_resolvers



21
22
23
# File 'lib/osctld/container.rb', line 21

def dns_resolvers
  @dns_resolvers
end

#ephemeralObject Also known as: ephemeral?

Returns the value of attribute ephemeral



21
22
23
# File 'lib/osctld/container.rb', line 21

def ephemeral
  @ephemeral
end

#groupObject

Returns the value of attribute group



21
22
23
# File 'lib/osctld/container.rb', line 21

def group
  @group
end

#hostnameObject

Returns the value of attribute hostname



21
22
23
# File 'lib/osctld/container.rb', line 21

def hostname
  @hostname
end

#idObject

Returns the value of attribute id



21
22
23
# File 'lib/osctld/container.rb', line 21

def id
  @id
end

#init_cmdObject

Returns the value of attribute init_cmd



21
22
23
# File 'lib/osctld/container.rb', line 21

def init_cmd
  @init_cmd
end

#init_pidObject

Returns the value of attribute init_pid



21
22
23
# File 'lib/osctld/container.rb', line 21

def init_pid
  @init_pid
end

#lxc_configObject

Returns the value of attribute lxc_config



21
22
23
# File 'lib/osctld/container.rb', line 21

def lxc_config
  @lxc_config
end

#mountedObject (protected)

Returns the value of attribute mounted



655
656
657
# File 'lib/osctld/container.rb', line 655

def mounted
  @mounted
end

#mountsObject

Returns the value of attribute mounts



21
22
23
# File 'lib/osctld/container.rb', line 21

def mounts
  @mounts
end

#nestingObject

Returns the value of attribute nesting



21
22
23
# File 'lib/osctld/container.rb', line 21

def nesting
  @nesting
end

#netifsObject

Returns the value of attribute netifs



21
22
23
# File 'lib/osctld/container.rb', line 21

def netifs
  @netifs
end

#poolObject

Returns the value of attribute pool



21
22
23
# File 'lib/osctld/container.rb', line 21

def pool
  @pool
end

#prlimitsObject

Returns the value of attribute prlimits



21
22
23
# File 'lib/osctld/container.rb', line 21

def prlimits
  @prlimits
end

#raw_configsObject (readonly)

Returns the value of attribute raw_configs



21
22
23
# File 'lib/osctld/container.rb', line 21

def raw_configs
  @raw_configs
end

#seccomp_profileObject

Returns the value of attribute seccomp_profile



21
22
23
# File 'lib/osctld/container.rb', line 21

def seccomp_profile
  @seccomp_profile
end

#send_logObject

Returns the value of attribute send_log



21
22
23
# File 'lib/osctld/container.rb', line 21

def send_log
  @send_log
end

#stateObject

Returns the value of attribute state



21
22
23
# File 'lib/osctld/container.rb', line 21

def state
  @state
end

#userObject

Returns the value of attribute user



21
22
23
# File 'lib/osctld/container.rb', line 21

def user
  @user
end

#versionObject

Returns the value of attribute version



21
22
23
# File 'lib/osctld/container.rb', line 21

def version
  @version
end

Class Method Details

.default_dataset(pool, id, dataset_cache: nil) ⇒ Object



16
17
18
19
# File 'lib/osctld/container.rb', line 16

def self.default_dataset(pool, id, dataset_cache: nil)
  name = File.join(pool.ct_ds, id)
  OsCtl::Lib::Zfs::Dataset.new(name, base: name, cache: dataset_cache)
end

Instance Method Details

#abs_apply_cgroup_path(subsystem) ⇒ Object



391
392
393
# File 'lib/osctld/container.rb', line 391

def abs_apply_cgroup_path(subsystem)
  File.join(CGroup::FS, CGroup.real_subsystem(subsystem), base_cgroup_path)
end

#abs_cgroup_path(subsystem) ⇒ Object



387
388
389
# File 'lib/osctld/container.rb', line 387

def abs_cgroup_path(subsystem)
  File.join(CGroup::FS, CGroup.real_subsystem(subsystem), cgroup_path)
end

#assetsObject



105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
# File 'lib/osctld/container.rb', line 105

def assets
  define_assets do |add|
    # Datasets
    add.dataset(
      dataset,
      desc: "Container's rootfs dataset",
      uidmap: uid_map.map(&:to_a),
      gidmap: gid_map.map(&:to_a),
      user: root_host_uid,
      group: root_host_gid,
      mode: 0770,
      validate_if: mounted?,
    )

    # Directories and files
    add.directory(
      rootfs,
      desc: "Container's rootfs",
      user: root_host_uid,
      group: root_host_gid,
      mode: 0755,
      validate_if: mounted?,
    )

    add.directory(
      user_hook_script_dir,
      desc: 'User supplied script hooks',
      user: 0,
      group: 0,
      mode: 0700
    )
    add.directory(
      lxc_dir,
      desc: 'LXC configuration',
      user: 0,
      group: user.ugid,
      mode: 0750
    )

    lxc_config.assets(add)

    add.file(
      File.join(lxc_dir, '.bashrc'),
      desc: 'Shell configuration file for osctl ct su',
      user: 0,
      group: 0,
      mode: 0644
    )

    add.file(
      config_path,
      desc: 'Container config for osctld',
      user: 0,
      group: 0,
      mode: 0400
    )
    add.file(
      log_path,
      desc: 'LXC log file',
      user: 0,
      group: user.ugid,
      mode: 0660
    )
  end
end

#base_cgroup_pathObject



379
380
381
# File 'lib/osctld/container.rb', line 379

def base_cgroup_path
  inclusively { File.join(group.full_cgroup_path(user), "ct.#{id}") }
end

#can_dist_configure_network?Boolean

Returns:

  • (Boolean)


292
293
294
295
296
297
# File 'lib/osctld/container.rb', line 292

def can_dist_configure_network?
  inclusively do
    next false if netifs.detect { |netif| !netif.can_run_distconfig? }
    true
  end
end

#can_start?Boolean

Returns:

  • (Boolean)


270
271
272
# File 'lib/osctld/container.rb', line 270

def can_start?
  inclusively { state != :staged && state != :error && pool.active? }
end

#cgroup_pathObject



383
384
385
# File 'lib/osctld/container.rb', line 383

def cgroup_path
  File.join(base_cgroup_path, 'user-owned')
end

#chgrp(grp, missing_devices: nil) ⇒ Object



216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
# File 'lib/osctld/container.rb', line 216

def chgrp(grp, missing_devices: nil)
  self.group = grp

  case missing_devices
  when 'provide'
    devices.ensure_all
    devices.create

  when 'remove'
    devices.remove_missing
    devices.create

  when 'check'
    devices.check_all_available!(grp)

  else
    fail "unsupported action for missing devices: '#{missing_devices}'"
  end

  save_config
  lxc_config.configure
  configure_bashrc
end

#chown(user) ⇒ Object



209
210
211
212
213
214
# File 'lib/osctld/container.rb', line 209

def chown(user)
  self.user = user
  save_config
  lxc_config.configure
  configure_bashrc
end

#clone_from(ct, id, opts = {}) ⇒ Object (protected)

Change the container so that it becomes a clone of `ct` with a different id

Parameters:

  • ct (Container)

    the source container

  • id (String)

    new container id

  • opts (Hash) (defaults to: {})

    options

Options Hash (opts):

  • :pool (Pool)

    target pool, optional

  • :user (User)

    target user, optional

  • :group (Group)

    target group, optional

  • :dataset (String)

    target dataset, optional

  • :network_interfaces (Boolean)


725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
# File 'lib/osctld/container.rb', line 725

def clone_from(ct, id, opts = {})
  init_lock
  init_manipulable

  @id = id
  @pool = opts[:pool] if opts[:pool]
  @user = opts[:user] if opts[:user]
  @group = opts[:group] if opts[:group]
  @init_pid = nil
  @state = :staged
  @send_log = nil
  @do_reboot = false

  if opts[:dataset]
    @dataset = OsCtl::Lib::Zfs::Dataset.new(
      opts[:dataset],
      base: opts[:dataset],
    )
  else
    @dataset = Container.default_dataset(@pool, @id)
  end

  @apparmor = @apparmor.dup(self)
  @autostart = @autostart && @autostart.dup(self)
  @cgparams = cgparams.dup(self)
  @prlimits = prlimits.dup(self)
  @mounts = mounts.dup(self)
  @lxc_config = lxc_config.dup(self)
  @raw_configs = raw_configs.dup
  @attrs = attrs.dup

  @devices = devices.dup(self)
  devices.init

  if opts[:network_interfaces]
    @netifs = netifs.dup(self)
    netifs.each(&:setup)
  else
    @netifs = NetInterface::Manager.new(self)
  end
end

#close_send_log(save: true) ⇒ Object



529
530
531
532
533
534
# File 'lib/osctld/container.rb', line 529

def close_send_log(save: true)
  exclusively do
    self.send_log = nil
    save_config if save
  end
end

#config_pathObject



342
343
344
# File 'lib/osctld/container.rb', line 342

def config_path
  inclusively { File.join(pool.conf_path, 'ct', "#{id}.yml") }
end

#configure(distribution, version, arch) ⇒ Object



88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
# File 'lib/osctld/container.rb', line 88

def configure(distribution, version, arch)
  exclusively do
    @distribution = distribution
    @version = version
    @arch = arch
    @netifs = NetInterface::Manager.new(self)
    @nesting = false
    @seccomp_profile = default_seccomp_profile
    @cgparams = CGroup::ContainerParams.new(self)
    @devices = Devices::ContainerManager.new(self)
    @prlimits = PrLimits::Manager.default(self)
    @mounts = Mount::Manager.new(self)
    devices.init
    save_config
  end
end

#configure_bashrcObject



509
510
511
512
513
514
515
516
517
518
519
520
# File 'lib/osctld/container.rb', line 509

def configure_bashrc
  ErbTemplate.render_to('ct/bashrc', {
    ct: self,
    override: %w(
      attach cgroup console device execute info ls monitor stop top wait
    ),
    disable: %w(
      autostart checkpoint clone copy create destroy freeze snapshot
      start-ephemeral unfreeze unshare
    ),
  }, File.join(lxc_dir, '.bashrc'))
end

#current_stateObject



258
259
260
261
262
263
264
# File 'lib/osctld/container.rb', line 258

def current_state
  begin
    self.state = ContainerControl::Commands::State.run!(self).state
  rescue ContainerControl::Error
    self.state = :error
  end
end

#datasetsArray<OsCtl::Lib::Zfs::Dataset>

Return a list of all container datasets

Returns:

  • (Array<OsCtl::Lib::Zfs::Dataset>)


368
369
370
371
# File 'lib/osctld/container.rb', line 368

def datasets
  ds = inclusively { dataset }
  [ds] + ds.descendants
end

#default_init_cmdObject (protected)



771
772
773
# File 'lib/osctld/container.rb', line 771

def default_init_cmd
  ['/sbin/init']
end

#default_seccomp_profileObject (protected)



767
768
769
# File 'lib/osctld/container.rb', line 767

def default_seccomp_profile
  '/etc/lxc/config/common.seccomp'
end

#dirObject



312
313
314
# File 'lib/osctld/container.rb', line 312

def dir
  dataset.mountpoint
end

#dist_configure_networkObject



305
306
307
308
309
310
# File 'lib/osctld/container.rb', line 305

def dist_configure_network
  return unless dist_configure_network?

  DistConfig.run(self, :network)
  self.dist_network_configured = true
end

#dist_configure_network?Boolean

Returns:

  • (Boolean)


299
300
301
302
303
# File 'lib/osctld/container.rb', line 299

def dist_configure_network?
  inclusively do
    !dist_network_configured && can_dist_configure_network?
  end
end

#dump_configObject

Dump to config



569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
# File 'lib/osctld/container.rb', line 569

def dump_config
  inclusively do
    data = {
      'user' => user.name,
      'group' => group.name,
      'dataset' => dataset.name,
      'distribution' => distribution,
      'version' => version,
      'arch' => arch,
      'net_interfaces' => netifs.dump,
      'cgparams' => cgparams.dump,
      'devices' => devices.dump,
      'prlimits' => prlimits.dump,
      'mounts' => mounts.dump,
      'autostart' => autostart && autostart.dump,
      'ephemeral' => ephemeral,
      'hostname' => hostname && hostname.to_s,
      'dns_resolvers' => dns_resolvers,
      'nesting' => nesting,
      'seccomp_profile' => seccomp_profile == default_seccomp_profile \
                           ? nil : seccomp_profile,
      'init_cmd' => init_cmd,
      'raw' => raw_configs.dump,
      'attrs' => attrs.dump,
    }

    data['state'] = 'staged' if state == :staged
    data['send_log'] = send_log.dump if send_log

    data
  end
end

#dup(id, opts = {}) ⇒ Object

Duplicate the container with a different ID

The returned container has `state` set to `:staged` and its assets will not exist, so the caller has to build the container and call `ct.state = :complete` for the container to become usable.

Parameters:

  • id (String)

    new container id

  • opts (Hash) (defaults to: {})

    options

Options Hash (opts):

  • :pool (Pool)

    target pool, optional

  • :user (User)

    target user, optional

  • :group (Group)

    target group, optional

  • :dataset (String)

    target dataset, optional



183
184
185
186
187
# File 'lib/osctld/container.rb', line 183

def dup(id, opts = {})
  ct = clone
  ct.send(:clone_from, self, id, opts)
  ct
end

#each_dataset {|ds| ... } ⇒ Object

Iterate over all container datasets

Yield Parameters:

  • ds (OsCtl::Lib::Zfs::Dataset)


375
376
377
# File 'lib/osctld/container.rb', line 375

def each_dataset(&block)
  datasets.each(&block)
end

#exportObject

Export to clients



537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
# File 'lib/osctld/container.rb', line 537

def export
  inclusively do
    {
      pool: pool.name,
      id: id,
      user: user.name,
      group: group.name,
      dataset: dataset.name,
      rootfs: rootfs,
      lxc_path: lxc_home,
      lxc_dir: lxc_dir,
      group_path: cgroup_path,
      distribution: distribution,
      version: version,
      state: state,
      init_pid: init_pid,
      autostart: autostart ? true : false,
      autostart_priority: autostart && autostart.priority,
      autostart_delay: autostart && autostart.delay,
      ephemeral: ephemeral,
      hostname: hostname,
      dns_resolvers: dns_resolvers,
      nesting: nesting,
      seccomp_profile: seccomp_profile,
      init_cmd: format_init_cmd,
      raw_lxc: raw_configs.lxc,
      log_file: log_path,
    }.merge!(attrs.export)
  end
end

#format_init_cmdObject



633
634
635
# File 'lib/osctld/container.rb', line 633

def format_init_cmd
  (init_cmd || default_init_cmd).join(' ')
end

#gid_mapObject



354
355
356
# File 'lib/osctld/container.rb', line 354

def gid_map
  user.gid_map
end

#identObject



84
85
86
# File 'lib/osctld/container.rb', line 84

def ident
  inclusively { "#{pool.name}:#{id}" }
end

#load_config_file(path = nil, opts = {}) ⇒ Object (protected)



657
658
659
# File 'lib/osctld/container.rb', line 657

def load_config_file(path = nil, opts = {})
  load_config_hash(YAML.load_file(path || config_path), opts)
end

#load_config_hash(cfg, init_devices: true, dataset_cache: nil) ⇒ Object (protected)



665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
# File 'lib/osctld/container.rb', line 665

def load_config_hash(cfg, init_devices: true, dataset_cache: nil)
  exclusively do
    @state = cfg['state'].to_sym if cfg['state']
    @user ||= DB::Users.find(cfg['user'], pool) || (raise "user not found")
    @group ||= DB::Groups.find(cfg['group'], pool) || (raise "group not found")

    unless @dataset
      if cfg['dataset']
        @dataset = OsCtl::Lib::Zfs::Dataset.new(
          cfg['dataset'],
          base: cfg['dataset'],
          cache: dataset_cache,
        )
      else
        @dataset = Container.default_dataset(
          pool,
          id,
          dataset_cache: dataset_cache,
        )
      end
    end

    @distribution = cfg['distribution']
    @version = cfg['version']
    @arch = cfg['arch']
    @autostart = cfg['autostart'] && AutoStart::Config.load(self, cfg['autostart'])
    @ephemeral = cfg['ephemeral']
    @hostname = cfg['hostname'] && OsCtl::Lib::Hostname.new(cfg['hostname'])
    @dns_resolvers = cfg['dns_resolvers']
    @nesting = cfg['nesting'] || false
    @seccomp_profile = cfg['seccomp_profile'] || default_seccomp_profile
    @init_cmd = cfg['init_cmd']
    @send_log = SendReceive::Log.load(cfg['send_log']) if cfg['send_log']
    @cgparams = CGroup::ContainerParams.load(self, cfg['cgparams'])
    @prlimits = PrLimits::Manager.load(self, cfg['prlimits'] || {})
    @raw_configs = Container::RawConfigs.new(cfg['raw'] || {})
    @attrs = Attributes.load(cfg['attrs'] || {})

    # It's necessary to load devices _before_ netifs. The device manager needs
    # to create cgroups first, in order for echo a > devices.deny to work.
    # If the container has a veth interface, the setup code switches to the
    # container's user, which creates cgroups in all subsystems. Devices then
    # can't be initialized properly.
    @devices = Devices::ContainerManager.load(self, cfg['devices'] || [])
    @devices.init if init_devices

    @netifs = NetInterface::Manager.load(self, cfg['net_interfaces'] || [])
    @mounts = Mount::Manager.load(self, cfg['mounts'] || [])
  end
end

#load_config_string(str, opts = {}) ⇒ Object (protected)



661
662
663
# File 'lib/osctld/container.rb', line 661

def load_config_string(str, opts = {})
  load_config_hash(YAML.load(str), opts)
end

#log_pathObject



637
638
639
# File 'lib/osctld/container.rb', line 637

def log_path
  inclusively { File.join(pool.log_path, 'ct', "#{id}.log") }
end

#log_typeObject



641
642
643
# File 'lib/osctld/container.rb', line 641

def log_type
  inclusively { "ct=#{pool.name}:#{id}" }
end

#lxc_dir(user: nil, group: nil) ⇒ Object



320
321
322
# File 'lib/osctld/container.rb', line 320

def lxc_dir(user: nil, group: nil)
  inclusively { File.join(lxc_home(user: user, group: group), id) }
end

#lxc_home(user: nil, group: nil) ⇒ Object



316
317
318
# File 'lib/osctld/container.rb', line 316

def lxc_home(user: nil, group: nil)
  inclusively { (group || self.group).userdir(user || self.user) }
end

#manipulation_resourceObject



645
646
647
# File 'lib/osctld/container.rb', line 645

def manipulation_resource
  ['container', ident]
end

#mount(force: false) ⇒ Object

Mount the container's dataset

Parameters:

  • force (Boolean) (defaults to: false)

    ensure the datasets are mounted even if osctld already mounted them



192
193
194
195
196
# File 'lib/osctld/container.rb', line 192

def mount(force: false)
  return if !force && mounted
  dataset.mount(recursive: true)
  self.mounted = true
end

#mounted?(force: false) ⇒ Boolean

Check if the container's dataset is mounted

Parameters:

  • force (Boolean) (defaults to: false)

    check if the dataset is mounted even if osctld already mounted it

Returns:

  • (Boolean)


201
202
203
204
205
206
207
# File 'lib/osctld/container.rb', line 201

def mounted?(force: false)
  if force || mounted.nil?
    self.mounted = dataset.mounted?(recursive: true)
  else
    mounted
  end
end

#open_send_log(role, opts = {}) ⇒ Object



522
523
524
525
526
527
# File 'lib/osctld/container.rb', line 522

def open_send_log(role, opts = {})
  exclusively do
    self.send_log = SendReceive::Log.new(role: role, opts: opts)
    save_config
  end
end

#patch_config(new_config) ⇒ Object

Update keys/values from `new_config` in the container's config

Parameters:

  • config (Hash)


624
625
626
627
628
629
630
631
# File 'lib/osctld/container.rb', line 624

def patch_config(new_config)
  exclusively do
    tmp = dump_config
    tmp.update(new_config)
    load_config_hash(tmp)
    save_config
  end
end

#prlimit_set(name, soft, hard) ⇒ Object



482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
# File 'lib/osctld/container.rb', line 482

def prlimit_set(name, soft, hard)
  exclusively do
    limit = @prlimits.detect { |v| v.name == name }

    if limit
      limit.set(soft, hard)

    else
      @prlimits << PrLimit.new(name, soft, hard)
    end
  end

  save_config
  lxc_config.configure
end

#prlimit_unset(name) ⇒ Object



498
499
500
501
502
503
504
505
506
507
# File 'lib/osctld/container.rb', line 498

def prlimit_unset(name)
  exclusively do
    limit = @prlimits.detect { |v| v.name == name }
    next unless limit
    @prlimits.delete(limit)
  end

  save_config
  lxc_config.configure_prlimits
end

#reboot?Boolean

Returns:

  • (Boolean)


288
289
290
# File 'lib/osctld/container.rb', line 288

def reboot?
  @do_reboot
end

#reload_configObject



612
613
614
# File 'lib/osctld/container.rb', line 612

def reload_config
  load_config_file
end

#replace_config(config) ⇒ Object

Parameters:

  • config (String)


617
618
619
620
# File 'lib/osctld/container.rb', line 617

def replace_config(config)
  load_config_string(config)
  save_config
end

#request_rebootObject



284
285
286
# File 'lib/osctld/container.rb', line 284

def request_reboot
  @do_reboot = true
end

#root_host_gidObject



362
363
364
# File 'lib/osctld/container.rb', line 362

def root_host_gid
  user.gid_map.ns_to_host(0)
end

#root_host_uidObject



358
359
360
# File 'lib/osctld/container.rb', line 358

def root_host_uid
  user.uid_map.ns_to_host(0)
end

#rootfsObject



324
325
326
327
328
329
330
331
# File 'lib/osctld/container.rb', line 324

def rootfs
  File.join(dir, 'private')

rescue SystemCommandFailed
  # Dataset for staged containers does not have to exist yet, relevant
  # primarily for ct show/list
  nil
end

#running?Boolean

Returns:

  • (Boolean)


266
267
268
# File 'lib/osctld/container.rb', line 266

def running?
  state == :running
end

#runtime_rootfsObject



333
334
335
336
337
338
339
340
# File 'lib/osctld/container.rb', line 333

def runtime_rootfs
  fail 'container is not running' unless running?

  pid = inclusively { init_pid }
  fail 'init_pid not set' unless pid

  File.join('/proc', pid.to_s, 'root')
end

#save_configObject



602
603
604
605
606
607
608
609
610
# File 'lib/osctld/container.rb', line 602

def save_config
  data = dump_config

  File.open(config_path, 'w', 0400) do |f|
    f.write(YAML.dump(data))
  end

  File.chown(0, 0, config_path)
end

#set(opts) ⇒ Object



395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
# File 'lib/osctld/container.rb', line 395

def set(opts)
  opts.each do |k, v|
    case k
    when :autostart
      self.autostart = AutoStart::Config.new(self, v[:priority], v[:delay])

    when :ephemeral
      self.ephemeral = true

    when :hostname
      original = nil

      exclusively do
        original = @hostname
        @hostname = OsCtl::Lib::Hostname.new(v)
      end

      DistConfig.run(self, :set_hostname, original: original)

    when :dns_resolvers
      self.dns_resolvers = v
      DistConfig.run(self, :dns_resolvers)

    when :nesting
      self.nesting = true

    when :distribution
      exclusively do
        @distribution = v[:name]
        @version = v[:version]
        @arch = v[:arch] if v[:arch]
      end

    when :seccomp_profile
      self.seccomp_profile = v

    when :init_cmd
      self.init_cmd = v

    when :raw_lxc
      self.raw_configs.lxc = v

    when :attrs
      attrs.update(v)
    end
  end

  save_config
  lxc_config.configure_base
end

#startingObject



274
275
276
277
# File 'lib/osctld/container.rb', line 274

def starting
  self.dist_network_configured = false
  @do_reboot = false
end

#stoppedObject



279
280
281
282
# File 'lib/osctld/container.rb', line 279

def stopped
  self.dist_network_configured = false
  self.init_pid = nil
end

#uid_mapObject



350
351
352
# File 'lib/osctld/container.rb', line 350

def uid_map
  user.uid_map
end

#unset(opts) ⇒ Object



446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
# File 'lib/osctld/container.rb', line 446

def unset(opts)
  opts.each do |k, v|
    case k
    when :autostart
      self.autostart = false

    when :ephemeral
      self.ephemeral = false

    when :hostname
      self.hostname = nil

    when :dns_resolvers
      self.dns_resolvers = nil

    when :nesting
      self.nesting = false

    when :seccomp_profile
      self.seccomp_profile = default_seccomp_profile

    when :init_cmd
      self.init_cmd = nil

    when :raw_lxc
      self.raw_configs.lxc = nil

    when :attrs
      v.each { |attr| attrs.unset(attr) }
    end
  end

  save_config
  lxc_config.configure_base
end

#user_hook_script_dirObject



346
347
348
# File 'lib/osctld/container.rb', line 346

def user_hook_script_dir
  inclusively { File.join(pool.user_hook_script_dir, 'ct', id) }
end