35 lines
891 B
Go
35 lines
891 B
Go
// +build linux
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package network
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import (
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"fmt"
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"os"
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"syscall"
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"github.com/dotcloud/docker/pkg/system"
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)
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// crosbymichael: could make a network strategy that instead of returning veth pair names it returns a pid to an existing network namespace
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type NetNS struct {
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}
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func (v *NetNS) Create(n *Network, nspid int, networkState *NetworkState) error {
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networkState.NsPath = n.NsPath
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return nil
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}
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func (v *NetNS) Initialize(config *Network, networkState *NetworkState) error {
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if networkState.NsPath == "" {
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return fmt.Errorf("nspath does is not specified in NetworkState")
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}
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f, err := os.OpenFile(networkState.NsPath, os.O_RDONLY, 0)
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if err != nil {
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return fmt.Errorf("failed get network namespace fd: %v", err)
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}
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if err := system.Setns(f.Fd(), syscall.CLONE_NEWNET); err != nil {
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return fmt.Errorf("failed to setns current network namespace: %v", err)
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}
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return nil
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}
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