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61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cgroups
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import (
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"os"
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"path/filepath"
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"strconv"
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specs "github.com/opencontainers/runtime-spec/specs-go"
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)
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func NewNetCls(root string) *netclsController {
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return &netclsController{
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root: filepath.Join(root, string(NetCLS)),
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}
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}
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type netclsController struct {
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root string
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}
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func (n *netclsController) Name() Name {
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return NetCLS
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}
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func (n *netclsController) Path(path string) string {
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return filepath.Join(n.root, path)
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}
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func (n *netclsController) Create(path string, resources *specs.LinuxResources) error {
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if err := os.MkdirAll(n.Path(path), defaultDirPerm); err != nil {
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return err
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}
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if resources.Network != nil && resources.Network.ClassID != nil && *resources.Network.ClassID > 0 {
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return retryingWriteFile(
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filepath.Join(n.Path(path), "net_cls.classid"),
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[]byte(strconv.FormatUint(uint64(*resources.Network.ClassID), 10)),
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defaultFilePerm,
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)
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}
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return nil
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}
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func (n *netclsController) Update(path string, resources *specs.LinuxResources) error {
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return n.Create(path, resources)
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}
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