62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
/*
|
|
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 (
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
|
|
specs "github.com/opencontainers/runtime-spec/specs-go"
|
|
)
|
|
|
|
func NewNetCls(root string) *netclsController {
|
|
return &netclsController{
|
|
root: filepath.Join(root, string(NetCLS)),
|
|
}
|
|
}
|
|
|
|
type netclsController struct {
|
|
root string
|
|
}
|
|
|
|
func (n *netclsController) Name() Name {
|
|
return NetCLS
|
|
}
|
|
|
|
func (n *netclsController) Path(path string) string {
|
|
return filepath.Join(n.root, path)
|
|
}
|
|
|
|
func (n *netclsController) Create(path string, resources *specs.LinuxResources) error {
|
|
if err := os.MkdirAll(n.Path(path), defaultDirPerm); err != nil {
|
|
return err
|
|
}
|
|
if resources.Network != nil && resources.Network.ClassID != nil && *resources.Network.ClassID > 0 {
|
|
return retryingWriteFile(
|
|
filepath.Join(n.Path(path), "net_cls.classid"),
|
|
[]byte(strconv.FormatUint(uint64(*resources.Network.ClassID), 10)),
|
|
defaultFilePerm,
|
|
)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (n *netclsController) Update(path string, resources *specs.LinuxResources) error {
|
|
return n.Create(path, resources)
|
|
}
|