66 lines
1.6 KiB
Go
66 lines
1.6 KiB
Go
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/*
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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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"fmt"
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"os"
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"path/filepath"
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specs "github.com/opencontainers/runtime-spec/specs-go"
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)
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func NewNetPrio(root string) *netprioController {
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return &netprioController{
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root: filepath.Join(root, string(NetPrio)),
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}
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}
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type netprioController struct {
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root string
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}
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func (n *netprioController) Name() Name {
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return NetPrio
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}
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func (n *netprioController) Path(path string) string {
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return filepath.Join(n.root, path)
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}
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func (n *netprioController) 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 {
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for _, prio := range resources.Network.Priorities {
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if err := retryingWriteFile(
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filepath.Join(n.Path(path), "net_prio.ifpriomap"),
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formatPrio(prio.Name, prio.Priority),
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defaultFilePerm,
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); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func formatPrio(name string, prio uint32) []byte {
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return []byte(fmt.Sprintf("%s %d", name, prio))
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}
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