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Exec out to ip right now for creating the veth pair

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Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
This commit is contained in:
Michael Crosby 2014-02-11 03:32:35 -08:00
parent 1d3028efa3
commit f697f1d648
1 changed files with 4 additions and 32 deletions
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36
netlink/netlink_linux.go
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@ -6,6 +6,7 @@ import (
"encoding/binary"
"fmt"
"net"
"os/exec"
"syscall"
"unsafe"
)
@ -741,37 +742,8 @@ func NetworkChangeName(iface *net.Interface, newName string) error {
}
func NetworkCreateVethPair(name1, name2 string) error {
s, err := getNetlinkSocket()
if err != nil {
return err
if data, err := exec.Command("ip", "link", "add", name1, "type", "veth", "peer", "name", name2).Output(); err != nil {
return fmt.Errorf("%s %s", data, err)
}
defer s.Close()
wb := newNetlinkRequest(syscall.RTM_NEWLINK, syscall.NLM_F_CREATE|syscall.NLM_F_EXCL|syscall.NLM_F_ACK)
msg := newIfInfomsg(syscall.AF_UNSPEC)
wb.AddData(msg)
kindData := newRtAttr(IFLA_INFO_KIND, nonZeroTerminated("veth"))
info := newRtAttr(syscall.IFLA_LINKINFO, kindData.ToWireFormat())
// wb.AddData(info)
peerName := newRtAttr(syscall.IFLA_IFNAME, nonZeroTerminated(name2))
peer := newRtAttr(VETH_PEER, peerName.ToWireFormat())
// wb.AddData(peer)
b := []byte{}
b = append(b, peer.ToWireFormat()...)
b = append(b, info.ToWireFormat()...)
infoData := newRtAttr(IFLA_INFO_DATA, b)
wb.AddData(infoData)
nameData := newRtAttr(syscall.IFLA_IFNAME, zeroTerminated(name1))
wb.AddData(nameData)
if err := s.Send(wb); err != nil {
return err
}
return s.HandleAck(wb.Seq)
return nil
}