summaryrefslogtreecommitdiff
path: root/vendor/github.com/containerd/cgroups/systemd.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/containerd/cgroups/systemd.go')
-rw-r--r--vendor/github.com/containerd/cgroups/systemd.go160
1 files changed, 0 insertions, 160 deletions
diff --git a/vendor/github.com/containerd/cgroups/systemd.go b/vendor/github.com/containerd/cgroups/systemd.go
deleted file mode 100644
index c5d4e3081..000000000
--- a/vendor/github.com/containerd/cgroups/systemd.go
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- Copyright The containerd Authors.
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-package cgroups
-
-import (
- "fmt"
- "path/filepath"
- "strings"
- "sync"
-
- systemdDbus "github.com/coreos/go-systemd/dbus"
- "github.com/godbus/dbus"
- specs "github.com/opencontainers/runtime-spec/specs-go"
-)
-
-const (
- SystemdDbus Name = "systemd"
- defaultSlice = "system.slice"
-)
-
-var (
- canDelegate bool
- once sync.Once
-)
-
-func Systemd() ([]Subsystem, error) {
- root, err := v1MountPoint()
- if err != nil {
- return nil, err
- }
- defaultSubsystems, err := defaults(root)
- if err != nil {
- return nil, err
- }
- s, err := NewSystemd(root)
- if err != nil {
- return nil, err
- }
- // make sure the systemd controller is added first
- return append([]Subsystem{s}, defaultSubsystems...), nil
-}
-
-func Slice(slice, name string) Path {
- if slice == "" {
- slice = defaultSlice
- }
- return func(subsystem Name) (string, error) {
- return filepath.Join(slice, name), nil
- }
-}
-
-func NewSystemd(root string) (*SystemdController, error) {
- return &SystemdController{
- root: root,
- }, nil
-}
-
-type SystemdController struct {
- mu sync.Mutex
- root string
-}
-
-func (s *SystemdController) Name() Name {
- return SystemdDbus
-}
-
-func (s *SystemdController) Create(path string, resources *specs.LinuxResources) error {
- conn, err := systemdDbus.New()
- if err != nil {
- return err
- }
- defer conn.Close()
- slice, name := splitName(path)
- // We need to see if systemd can handle the delegate property
- // Systemd will return an error if it cannot handle delegate regardless
- // of its bool setting.
- checkDelegate := func() {
- canDelegate = true
- dlSlice := newProperty("Delegate", true)
- if _, err := conn.StartTransientUnit(slice, "testdelegate", []systemdDbus.Property{dlSlice}, nil); err != nil {
- if dbusError, ok := err.(dbus.Error); ok {
- // Starting with systemd v237, Delegate is not even a property of slices anymore,
- // so the D-Bus call fails with "InvalidArgs" error.
- if strings.Contains(dbusError.Name, "org.freedesktop.DBus.Error.PropertyReadOnly") || strings.Contains(dbusError.Name, "org.freedesktop.DBus.Error.InvalidArgs") {
- canDelegate = false
- }
- }
- }
-
- conn.StopUnit(slice, "testDelegate", nil)
- }
- once.Do(checkDelegate)
- properties := []systemdDbus.Property{
- systemdDbus.PropDescription(fmt.Sprintf("cgroup %s", name)),
- systemdDbus.PropWants(slice),
- newProperty("DefaultDependencies", false),
- newProperty("MemoryAccounting", true),
- newProperty("CPUAccounting", true),
- newProperty("BlockIOAccounting", true),
- }
-
- // If we can delegate, we add the property back in
- if canDelegate {
- properties = append(properties, newProperty("Delegate", true))
- }
-
- ch := make(chan string)
- _, err = conn.StartTransientUnit(name, "replace", properties, ch)
- if err != nil {
- return err
- }
- <-ch
- return nil
-}
-
-func (s *SystemdController) Delete(path string) error {
- conn, err := systemdDbus.New()
- if err != nil {
- return err
- }
- defer conn.Close()
- _, name := splitName(path)
- ch := make(chan string)
- _, err = conn.StopUnit(name, "replace", ch)
- if err != nil {
- return err
- }
- <-ch
- return nil
-}
-
-func newProperty(name string, units interface{}) systemdDbus.Property {
- return systemdDbus.Property{
- Name: name,
- Value: dbus.MakeVariant(units),
- }
-}
-
-func unitName(name string) string {
- return fmt.Sprintf("%s.slice", name)
-}
-
-func splitName(path string) (slice string, unit string) {
- slice, unit = filepath.Split(path)
- return strings.TrimSuffix(slice, "/"), unit
-}