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Diffstat (limited to 'vendor/github.com/containerd/cgroups/cpuset.go')
-rw-r--r--vendor/github.com/containerd/cgroups/cpuset.go159
1 files changed, 0 insertions, 159 deletions
diff --git a/vendor/github.com/containerd/cgroups/cpuset.go b/vendor/github.com/containerd/cgroups/cpuset.go
deleted file mode 100644
index 30208515e..000000000
--- a/vendor/github.com/containerd/cgroups/cpuset.go
+++ /dev/null
@@ -1,159 +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 (
- "bytes"
- "fmt"
- "io/ioutil"
- "os"
- "path/filepath"
-
- specs "github.com/opencontainers/runtime-spec/specs-go"
-)
-
-func NewCputset(root string) *cpusetController {
- return &cpusetController{
- root: filepath.Join(root, string(Cpuset)),
- }
-}
-
-type cpusetController struct {
- root string
-}
-
-func (c *cpusetController) Name() Name {
- return Cpuset
-}
-
-func (c *cpusetController) Path(path string) string {
- return filepath.Join(c.root, path)
-}
-
-func (c *cpusetController) Create(path string, resources *specs.LinuxResources) error {
- if err := c.ensureParent(c.Path(path), c.root); err != nil {
- return err
- }
- if err := os.MkdirAll(c.Path(path), defaultDirPerm); err != nil {
- return err
- }
- if err := c.copyIfNeeded(c.Path(path), filepath.Dir(c.Path(path))); err != nil {
- return err
- }
- if resources.CPU != nil {
- for _, t := range []struct {
- name string
- value string
- }{
- {
- name: "cpus",
- value: resources.CPU.Cpus,
- },
- {
- name: "mems",
- value: resources.CPU.Mems,
- },
- } {
- if t.value != "" {
- if err := ioutil.WriteFile(
- filepath.Join(c.Path(path), fmt.Sprintf("cpuset.%s", t.name)),
- []byte(t.value),
- defaultFilePerm,
- ); err != nil {
- return err
- }
- }
- }
- }
- return nil
-}
-
-func (c *cpusetController) Update(path string, resources *specs.LinuxResources) error {
- return c.Create(path, resources)
-}
-
-func (c *cpusetController) getValues(path string) (cpus []byte, mems []byte, err error) {
- if cpus, err = ioutil.ReadFile(filepath.Join(path, "cpuset.cpus")); err != nil && !os.IsNotExist(err) {
- return
- }
- if mems, err = ioutil.ReadFile(filepath.Join(path, "cpuset.mems")); err != nil && !os.IsNotExist(err) {
- return
- }
- return cpus, mems, nil
-}
-
-// ensureParent makes sure that the parent directory of current is created
-// and populated with the proper cpus and mems files copied from
-// it's parent.
-func (c *cpusetController) ensureParent(current, root string) error {
- parent := filepath.Dir(current)
- if _, err := filepath.Rel(root, parent); err != nil {
- return nil
- }
- // Avoid infinite recursion.
- if parent == current {
- return fmt.Errorf("cpuset: cgroup parent path outside cgroup root")
- }
- if cleanPath(parent) != root {
- if err := c.ensureParent(parent, root); err != nil {
- return err
- }
- }
- if err := os.MkdirAll(current, defaultDirPerm); err != nil {
- return err
- }
- return c.copyIfNeeded(current, parent)
-}
-
-// copyIfNeeded copies the cpuset.cpus and cpuset.mems from the parent
-// directory to the current directory if the file's contents are 0
-func (c *cpusetController) copyIfNeeded(current, parent string) error {
- var (
- err error
- currentCpus, currentMems []byte
- parentCpus, parentMems []byte
- )
- if currentCpus, currentMems, err = c.getValues(current); err != nil {
- return err
- }
- if parentCpus, parentMems, err = c.getValues(parent); err != nil {
- return err
- }
- if isEmpty(currentCpus) {
- if err := ioutil.WriteFile(
- filepath.Join(current, "cpuset.cpus"),
- parentCpus,
- defaultFilePerm,
- ); err != nil {
- return err
- }
- }
- if isEmpty(currentMems) {
- if err := ioutil.WriteFile(
- filepath.Join(current, "cpuset.mems"),
- parentMems,
- defaultFilePerm,
- ); err != nil {
- return err
- }
- }
- return nil
-}
-
-func isEmpty(b []byte) bool {
- return len(bytes.Trim(b, "\n")) == 0
-}