mirror of https://github.com/k3s-io/k3s
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
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// +build windows
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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 netns
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import "github.com/Microsoft/hcsshim/hcn"
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// NetNS holds network namespace for sandbox
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type NetNS struct {
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path string
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}
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// NewNetNS creates a network namespace for the sandbox
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func NewNetNS() (*NetNS, error) {
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temp := hcn.HostComputeNamespace{}
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hcnNamespace, err := temp.Create()
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if err != nil {
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return nil, err
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}
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return &NetNS{path: hcnNamespace.Id}, nil
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}
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// LoadNetNS loads existing network namespace.
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func LoadNetNS(path string) *NetNS {
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return &NetNS{path: path}
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}
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// Remove removes network namepace if it exists and not closed. Remove is idempotent,
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// meaning it might be invoked multiple times and provides consistent result.
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func (n *NetNS) Remove() error {
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hcnNamespace, err := hcn.GetNamespaceByID(n.path)
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if err != nil {
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if hcn.IsNotFoundError(err) {
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return nil
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}
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return err
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}
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err = hcnNamespace.Delete()
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if err == nil || hcn.IsNotFoundError(err) {
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return nil
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}
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return err
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}
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// Closed checks whether the network namespace has been closed.
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func (n *NetNS) Closed() (bool, error) {
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_, err := hcn.GetNamespaceByID(n.path)
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if err == nil {
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return false, nil
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}
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if hcn.IsNotFoundError(err) {
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return true, nil
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}
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return false, err
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}
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// GetPath returns network namespace path for sandbox container
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func (n *NetNS) GetPath() string {
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return n.path
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}
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// NOTE: Do function is not supported.
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