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vendor: remove moved cni/pkg/... libraries

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This commit is contained in:
Casey Callendrello 2017-05-22 20:32:16 +02:00
parent 3c436520be
commit 4e2f467e21
20 changed files with 175 additions and 1272 deletions
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40
Godeps/Godeps.json generated
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@ -11,31 +11,11 @@
"Comment": "v0.5.2", "Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e" "Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
}, },
{
"ImportPath": "github.com/containernetworking/cni/pkg/ip",
"Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
},
{
"ImportPath": "github.com/containernetworking/cni/pkg/ipam",
"Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
},
{
"ImportPath": "github.com/containernetworking/cni/pkg/ns",
"Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
},
{ {
"ImportPath": "github.com/containernetworking/cni/pkg/skel", "ImportPath": "github.com/containernetworking/cni/pkg/skel",
"Comment": "v0.5.2", "Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e" "Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
}, },
{
"ImportPath": "github.com/containernetworking/cni/pkg/testutils",
"Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
},
{ {
"ImportPath": "github.com/containernetworking/cni/pkg/types", "ImportPath": "github.com/containernetworking/cni/pkg/types",
"Comment": "v0.5.2", "Comment": "v0.5.2",
@ -51,21 +31,6 @@
"Comment": "v0.5.2", "Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e" "Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
}, },
{
"ImportPath": "github.com/containernetworking/cni/pkg/utils",
"Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
},
{
"ImportPath": "github.com/containernetworking/cni/pkg/utils/hwaddr",
"Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
},
{
"ImportPath": "github.com/containernetworking/cni/pkg/utils/sysctl",
"Comment": "v0.5.2",
"Rev": "137b4975ecab6e1f0c24c1e3c228a50a3cfba75e"
},
{ {
"ImportPath": "github.com/containernetworking/cni/pkg/version", "ImportPath": "github.com/containernetworking/cni/pkg/version",
"Comment": "v0.5.2", "Comment": "v0.5.2",
@ -99,6 +64,11 @@
"Comment": "v1.2.0-29-g7f8ab55", "Comment": "v1.2.0-29-g7f8ab55",
"Rev": "7f8ab55aaf3b86885aa55b762e803744d1674700" "Rev": "7f8ab55aaf3b86885aa55b762e803744d1674700"
}, },
{
"ImportPath": "github.com/onsi/ginkgo/extensions/table",
"Comment": "v1.2.0-29-g7f8ab55",
"Rev": "7f8ab55aaf3b86885aa55b762e803744d1674700"
},
{ {
"ImportPath": "github.com/onsi/ginkgo/internal/codelocation", "ImportPath": "github.com/onsi/ginkgo/internal/codelocation",
"Comment": "v1.2.0-29-g7f8ab55", "Comment": "v1.2.0-29-g7f8ab55",

51
vendor/github.com/containernetworking/cni/pkg/ip/cidr.go generated vendored
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@ -1,51 +0,0 @@
// Copyright 2015 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ip
import (
"math/big"
"net"
)
// NextIP returns IP incremented by 1
func NextIP(ip net.IP) net.IP {
i := ipToInt(ip)
return intToIP(i.Add(i, big.NewInt(1)))
}
// PrevIP returns IP decremented by 1
func PrevIP(ip net.IP) net.IP {
i := ipToInt(ip)
return intToIP(i.Sub(i, big.NewInt(1)))
}
func ipToInt(ip net.IP) *big.Int {
if v := ip.To4(); v != nil {
return big.NewInt(0).SetBytes(v)
}
return big.NewInt(0).SetBytes(ip.To16())
}
func intToIP(i *big.Int) net.IP {
return net.IP(i.Bytes())
}
// Network masks off the host portion of the IP
func Network(ipn *net.IPNet) *net.IPNet {
return &net.IPNet{
IP: ipn.IP.Mask(ipn.Mask),
Mask: ipn.Mask,
}
}

31
vendor/github.com/containernetworking/cni/pkg/ip/ipforward.go generated vendored
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@ -1,31 +0,0 @@
// Copyright 2015 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ip
import (
"io/ioutil"
)
func EnableIP4Forward() error {
return echo1("/proc/sys/net/ipv4/ip_forward")
}
func EnableIP6Forward() error {
return echo1("/proc/sys/net/ipv6/conf/all/forwarding")
}
func echo1(f string) error {
return ioutil.WriteFile(f, []byte("1"), 0644)
}

66
vendor/github.com/containernetworking/cni/pkg/ip/ipmasq.go generated vendored
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@ -1,66 +0,0 @@
// Copyright 2015 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ip
import (
"fmt"
"net"
"github.com/coreos/go-iptables/iptables"
)
// SetupIPMasq installs iptables rules to masquerade traffic
// coming from ipn and going outside of it
func SetupIPMasq(ipn *net.IPNet, chain string, comment string) error {
ipt, err := iptables.New()
if err != nil {
return fmt.Errorf("failed to locate iptables: %v", err)
}
if err = ipt.NewChain("nat", chain); err != nil {
if err.(*iptables.Error).ExitStatus() != 1 {
// TODO(eyakubovich): assumes exit status 1 implies chain exists
return err
}
}
if err = ipt.AppendUnique("nat", chain, "-d", ipn.String(), "-j", "ACCEPT", "-m", "comment", "--comment", comment); err != nil {
return err
}
if err = ipt.AppendUnique("nat", chain, "!", "-d", "224.0.0.0/4", "-j", "MASQUERADE", "-m", "comment", "--comment", comment); err != nil {
return err
}
return ipt.AppendUnique("nat", "POSTROUTING", "-s", ipn.String(), "-j", chain, "-m", "comment", "--comment", comment)
}
// TeardownIPMasq undoes the effects of SetupIPMasq
func TeardownIPMasq(ipn *net.IPNet, chain string, comment string) error {
ipt, err := iptables.New()
if err != nil {
return fmt.Errorf("failed to locate iptables: %v", err)
}
if err = ipt.Delete("nat", "POSTROUTING", "-s", ipn.String(), "-j", chain, "-m", "comment", "--comment", comment); err != nil {
return err
}
if err = ipt.ClearChain("nat", chain); err != nil {
return err
}
return ipt.DeleteChain("nat", chain)
}

219
vendor/github.com/containernetworking/cni/pkg/ip/link.go generated vendored
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@ -1,219 +0,0 @@
// Copyright 2015 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ip
import (
"crypto/rand"
"errors"
"fmt"
"net"
"os"
"github.com/containernetworking/cni/pkg/ns"
"github.com/containernetworking/cni/pkg/utils/hwaddr"
"github.com/vishvananda/netlink"
)
var (
ErrLinkNotFound = errors.New("link not found")
)
func makeVethPair(name, peer string, mtu int) (netlink.Link, error) {
veth := &netlink.Veth{
LinkAttrs: netlink.LinkAttrs{
Name: name,
Flags: net.FlagUp,
MTU: mtu,
},
PeerName: peer,
}
if err := netlink.LinkAdd(veth); err != nil {
return nil, err
}
return veth, nil
}
func peerExists(name string) bool {
if _, err := netlink.LinkByName(name); err != nil {
return false
}
return true
}
func makeVeth(name string, mtu int) (peerName string, veth netlink.Link, err error) {
for i := 0; i < 10; i++ {
peerName, err = RandomVethName()
if err != nil {
return
}
veth, err = makeVethPair(name, peerName, mtu)
switch {
case err == nil:
return
case os.IsExist(err):
if peerExists(peerName) {
continue
}
err = fmt.Errorf("container veth name provided (%v) already exists", name)
return
default:
err = fmt.Errorf("failed to make veth pair: %v", err)
return
}
}
// should really never be hit
err = fmt.Errorf("failed to find a unique veth name")
return
}
// RandomVethName returns string "veth" with random prefix (hashed from entropy)
func RandomVethName() (string, error) {
entropy := make([]byte, 4)
_, err := rand.Reader.Read(entropy)
if err != nil {
return "", fmt.Errorf("failed to generate random veth name: %v", err)
}
// NetworkManager (recent versions) will ignore veth devices that start with "veth"
return fmt.Sprintf("veth%x", entropy), nil
}
func RenameLink(curName, newName string) error {
link, err := netlink.LinkByName(curName)
if err == nil {
err = netlink.LinkSetName(link, newName)
}
return err
}
func ifaceFromNetlinkLink(l netlink.Link) net.Interface {
a := l.Attrs()
return net.Interface{
Index: a.Index,
MTU: a.MTU,
Name: a.Name,
HardwareAddr: a.HardwareAddr,
Flags: a.Flags,
}
}
// SetupVeth sets up a pair of virtual ethernet devices.
// Call SetupVeth from inside the container netns. It will create both veth
// devices and move the host-side veth into the provided hostNS namespace.
// On success, SetupVeth returns (hostVeth, containerVeth, nil)
func SetupVeth(contVethName string, mtu int, hostNS ns.NetNS) (net.Interface, net.Interface, error) {
hostVethName, contVeth, err := makeVeth(contVethName, mtu)
if err != nil {
return net.Interface{}, net.Interface{}, err
}
if err = netlink.LinkSetUp(contVeth); err != nil {
return net.Interface{}, net.Interface{}, fmt.Errorf("failed to set %q up: %v", contVethName, err)
}
hostVeth, err := netlink.LinkByName(hostVethName)
if err != nil {
return net.Interface{}, net.Interface{}, fmt.Errorf("failed to lookup %q: %v", hostVethName, err)
}
if err = netlink.LinkSetNsFd(hostVeth, int(hostNS.Fd())); err != nil {
return net.Interface{}, net.Interface{}, fmt.Errorf("failed to move veth to host netns: %v", err)
}
err = hostNS.Do(func(_ ns.NetNS) error {
hostVeth, err = netlink.LinkByName(hostVethName)
if err != nil {
return fmt.Errorf("failed to lookup %q in %q: %v", hostVethName, hostNS.Path(), err)
}
if err = netlink.LinkSetUp(hostVeth); err != nil {
return fmt.Errorf("failed to set %q up: %v", hostVethName, err)
}
return nil
})
if err != nil {
return net.Interface{}, net.Interface{}, err
}
return ifaceFromNetlinkLink(hostVeth), ifaceFromNetlinkLink(contVeth), nil
}
// DelLinkByName removes an interface link.
func DelLinkByName(ifName string) error {
iface, err := netlink.LinkByName(ifName)
if err != nil {
return fmt.Errorf("failed to lookup %q: %v", ifName, err)
}
if err = netlink.LinkDel(iface); err != nil {
return fmt.Errorf("failed to delete %q: %v", ifName, err)
}
return nil
}
// DelLinkByNameAddr remove an interface returns its IP address
// of the specified family
func DelLinkByNameAddr(ifName string, family int) (*net.IPNet, error) {
iface, err := netlink.LinkByName(ifName)
if err != nil {
if err != nil && err.Error() == "Link not found" {
return nil, ErrLinkNotFound
}
return nil, fmt.Errorf("failed to lookup %q: %v", ifName, err)
}
addrs, err := netlink.AddrList(iface, family)
if err != nil || len(addrs) == 0 {
return nil, fmt.Errorf("failed to get IP addresses for %q: %v", ifName, err)
}
if err = netlink.LinkDel(iface); err != nil {
return nil, fmt.Errorf("failed to delete %q: %v", ifName, err)
}
return addrs[0].IPNet, nil
}
func SetHWAddrByIP(ifName string, ip4 net.IP, ip6 net.IP) error {
iface, err := netlink.LinkByName(ifName)
if err != nil {
return fmt.Errorf("failed to lookup %q: %v", ifName, err)
}
switch {
case ip4 == nil && ip6 == nil:
return fmt.Errorf("neither ip4 or ip6 specified")
case ip4 != nil:
{
hwAddr, err := hwaddr.GenerateHardwareAddr4(ip4, hwaddr.PrivateMACPrefix)
if err != nil {
return fmt.Errorf("failed to generate hardware addr: %v", err)
}
if err = netlink.LinkSetHardwareAddr(iface, hwAddr); err != nil {
return fmt.Errorf("failed to add hardware addr to %q: %v", ifName, err)
}
}
case ip6 != nil:
// TODO: IPv6
}
return nil
}

27
vendor/github.com/containernetworking/cni/pkg/ip/route.go generated vendored
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@ -1,27 +0,0 @@
// Copyright 2015 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ip
import (
"net"
"github.com/vishvananda/netlink"
)
// AddDefaultRoute sets the default route on the given gateway.
func AddDefaultRoute(gw net.IP, dev netlink.Link) error {
_, defNet, _ := net.ParseCIDR("0.0.0.0/0")
return AddRoute(defNet, gw, dev)
}

41
vendor/github.com/containernetworking/cni/pkg/ip/route_linux.go generated vendored
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@ -1,41 +0,0 @@
// Copyright 2015-2017 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ip
import (
"net"
"github.com/vishvananda/netlink"
)
// AddRoute adds a universally-scoped route to a device.
func AddRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error {
return netlink.RouteAdd(&netlink.Route{
LinkIndex: dev.Attrs().Index,
Scope: netlink.SCOPE_UNIVERSE,
Dst: ipn,
Gw: gw,
})
}
// AddHostRoute adds a host-scoped route to a device.
func AddHostRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error {
return netlink.RouteAdd(&netlink.Route{
LinkIndex: dev.Attrs().Index,
Scope: netlink.SCOPE_HOST,
Dst: ipn,
Gw: gw,
})
}

34
vendor/github.com/containernetworking/cni/pkg/ip/route_unspecified.go generated vendored
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@ -1,34 +0,0 @@
// Copyright 2015-2017 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !linux
package ip
import (
"net"
"github.com/containernetworking/cni/pkg/types"
"github.com/vishvananda/netlink"
)
// AddRoute adds a universally-scoped route to a device.
func AddRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error {
return types.NotImplementedError
}
// AddHostRoute adds a host-scoped route to a device.
func AddHostRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error {
return types.NotImplementedError
}

93
vendor/github.com/containernetworking/cni/pkg/ipam/ipam.go generated vendored
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@ -1,93 +0,0 @@
// Copyright 2015 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ipam
import (
"fmt"
"net"
"os"
"github.com/containernetworking/cni/pkg/invoke"
"github.com/containernetworking/cni/pkg/ip"
"github.com/containernetworking/cni/pkg/types"
"github.com/containernetworking/cni/pkg/types/current"
"github.com/vishvananda/netlink"
)
func ExecAdd(plugin string, netconf []byte) (types.Result, error) {
return invoke.DelegateAdd(plugin, netconf)
}
func ExecDel(plugin string, netconf []byte) error {
return invoke.DelegateDel(plugin, netconf)
}
// ConfigureIface takes the result of IPAM plugin and
// applies to the ifName interface
func ConfigureIface(ifName string, res *current.Result) error {
if len(res.Interfaces) == 0 {
return fmt.Errorf("no interfaces to configure")
}
link, err := netlink.LinkByName(ifName)
if err != nil {
return fmt.Errorf("failed to lookup %q: %v", ifName, err)
}
if err := netlink.LinkSetUp(link); err != nil {
return fmt.Errorf("failed to set %q UP: %v", ifName, err)
}
var v4gw, v6gw net.IP
for _, ipc := range res.IPs {
if int(ipc.Interface) >= len(res.Interfaces) || res.Interfaces[ipc.Interface].Name != ifName {
// IP address is for a different interface
return fmt.Errorf("failed to add IP addr %v to %q: invalid interface index", ipc, ifName)
}
addr := &netlink.Addr{IPNet: &ipc.Address, Label: ""}
if err = netlink.AddrAdd(link, addr); err != nil {
return fmt.Errorf("failed to add IP addr %v to %q: %v", ipc, ifName, err)
}
gwIsV4 := ipc.Gateway.To4() != nil
if gwIsV4 && v4gw == nil {
v4gw = ipc.Gateway
} else if !gwIsV4 && v6gw == nil {
v6gw = ipc.Gateway
}
}
for _, r := range res.Routes {
routeIsV4 := r.Dst.IP.To4() != nil
gw := r.GW
if gw == nil {
if routeIsV4 && v4gw != nil {
gw = v4gw
} else if !routeIsV4 && v6gw != nil {
gw = v6gw
}
}
if err = ip.AddRoute(&r.Dst, gw, link); err != nil {
// we skip over duplicate routes as we assume the first one wins
if !os.IsExist(err) {
return fmt.Errorf("failed to add route '%v via %v dev %v': %v", r.Dst, gw, ifName, err)
}
}
}
return nil
}

34
vendor/github.com/containernetworking/cni/pkg/ns/README.md generated vendored
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@ -1,34 +0,0 @@
### Namespaces, Threads, and Go
On Linux each OS thread can have a different network namespace. Go's thread scheduling model switches goroutines between OS threads based on OS thread load and whether the goroutine would block other goroutines. This can result in a goroutine switching network namespaces without notice and lead to errors in your code.
### Namespace Switching
Switching namespaces with the `ns.Set()` method is not recommended without additional strategies to prevent unexpected namespace changes when your goroutines switch OS threads.
Go provides the `runtime.LockOSThread()` function to ensure a specific goroutine executes on its current OS thread and prevents any other goroutine from running in that thread until the locked one exits. Careful usage of `LockOSThread()` and goroutines can provide good control over which network namespace a given goroutine executes in.
For example, you cannot rely on the `ns.Set()` namespace being the current namespace after the `Set()` call unless you do two things. First, the goroutine calling `Set()` must have previously called `LockOSThread()`. Second, you must ensure `runtime.UnlockOSThread()` is not called somewhere in-between. You also cannot rely on the initial network namespace remaining the current network namespace if any other code in your program switches namespaces, unless you have already called `LockOSThread()` in that goroutine. Note that `LockOSThread()` prevents the Go scheduler from optimally scheduling goroutines for best performance, so `LockOSThread()` should only be used in small, isolated goroutines that release the lock quickly.
### Do() The Recommended Thing
The `ns.Do()` method provides control over network namespaces for you by implementing these strategies. All code dependent on a particular network namespace (including the root namespace) should be wrapped in the `ns.Do()` method to ensure the correct namespace is selected for the duration of your code. For example:
```go
targetNs, err := ns.NewNS()
if err != nil {
return err
}
err = targetNs.Do(func(hostNs ns.NetNS) error {
dummy := &netlink.Dummy{
LinkAttrs: netlink.LinkAttrs{
Name: "dummy0",
},
}
return netlink.LinkAdd(dummy)
})
```
Note this requirement to wrap every network call is very onerous - any libraries you call might call out to network services such as DNS, and all such calls need to be protected after you call `ns.Do()`. The CNI plugins all exit very soon after calling `ns.Do()` which helps to minimize the problem.
### Further Reading
- https://github.com/golang/go/wiki/LockOSThread
- http://morsmachine.dk/go-scheduler
- https://github.com/containernetworking/cni/issues/262

178
vendor/github.com/containernetworking/cni/pkg/ns/ns.go generated vendored
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@ -1,178 +0,0 @@
// Copyright 2015 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ns
import (
"fmt"
"os"
"runtime"
"sync"
"syscall"
)
type NetNS interface {
// Executes the passed closure in this object's network namespace,
// attempting to restore the original namespace before returning.
// However, since each OS thread can have a different network namespace,
// and Go's thread scheduling is highly variable, callers cannot
// guarantee any specific namespace is set unless operations that
// require that namespace are wrapped with Do(). Also, no code called
// from Do() should call runtime.UnlockOSThread(), or the risk
// of executing code in an incorrect namespace will be greater. See
// https://github.com/golang/go/wiki/LockOSThread for further details.
Do(toRun func(NetNS) error) error
// Sets the current network namespace to this object's network namespace.
// Note that since Go's thread scheduling is highly variable, callers
// cannot guarantee the requested namespace will be the current namespace
// after this function is called; to ensure this wrap operations that
// require the namespace with Do() instead.
Set() error
// Returns the filesystem path representing this object's network namespace
Path() string
// Returns a file descriptor representing this object's network namespace
Fd() uintptr
// Cleans up this instance of the network namespace; if this instance
// is the last user the namespace will be destroyed
Close() error
}
type netNS struct {
file *os.File
mounted bool
closed bool
}
// netNS implements the NetNS interface
var _ NetNS = &netNS{}
const (
// https://github.com/torvalds/linux/blob/master/include/uapi/linux/magic.h
NSFS_MAGIC = 0x6e736673
PROCFS_MAGIC = 0x9fa0
)
type NSPathNotExistErr struct{ msg string }
func (e NSPathNotExistErr) Error() string { return e.msg }
type NSPathNotNSErr struct{ msg string }
func (e NSPathNotNSErr) Error() string { return e.msg }
func IsNSorErr(nspath string) error {
stat := syscall.Statfs_t{}
if err := syscall.Statfs(nspath, &stat); err != nil {
if os.IsNotExist(err) {
err = NSPathNotExistErr{msg: fmt.Sprintf("failed to Statfs %q: %v", nspath, err)}
} else {
err = fmt.Errorf("failed to Statfs %q: %v", nspath, err)
}
return err
}
switch stat.Type {
case PROCFS_MAGIC, NSFS_MAGIC:
return nil
default:
return NSPathNotNSErr{msg: fmt.Sprintf("unknown FS magic on %q: %x", nspath, stat.Type)}
}
}
// Returns an object representing the namespace referred to by @path
func GetNS(nspath string) (NetNS, error) {
err := IsNSorErr(nspath)
if err != nil {
return nil, err
}
fd, err := os.Open(nspath)
if err != nil {
return nil, err
}
return &netNS{file: fd}, nil
}
func (ns *netNS) Path() string {
return ns.file.Name()
}
func (ns *netNS) Fd() uintptr {
return ns.file.Fd()
}
func (ns *netNS) errorIfClosed() error {
if ns.closed {
return fmt.Errorf("%q has already been closed", ns.file.Name())
}
return nil
}
func (ns *netNS) Do(toRun func(NetNS) error) error {
if err := ns.errorIfClosed(); err != nil {
return err
}
containedCall := func(hostNS NetNS) error {
threadNS, err := GetCurrentNS()
if err != nil {
return fmt.Errorf("failed to open current netns: %v", err)
}
defer threadNS.Close()
// switch to target namespace
if err = ns.Set(); err != nil {
return fmt.Errorf("error switching to ns %v: %v", ns.file.Name(), err)
}
defer threadNS.Set() // switch back
return toRun(hostNS)
}
// save a handle to current network namespace
hostNS, err := GetCurrentNS()
if err != nil {
return fmt.Errorf("Failed to open current namespace: %v", err)
}
defer hostNS.Close()
var wg sync.WaitGroup
wg.Add(1)
var innerError error
go func() {
defer wg.Done()
runtime.LockOSThread()
innerError = containedCall(hostNS)
}()
wg.Wait()
return innerError
}
// WithNetNSPath executes the passed closure under the given network
// namespace, restoring the original namespace afterwards.
func WithNetNSPath(nspath string, toRun func(NetNS) error) error {
ns, err := GetNS(nspath)
if err != nil {
return err
}
defer ns.Close()
return ns.Do(toRun)
}

149
vendor/github.com/containernetworking/cni/pkg/ns/ns_linux.go generated vendored
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@ -1,149 +0,0 @@
// Copyright 2015-2017 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ns
import (
"crypto/rand"
"fmt"
"os"
"path"
"runtime"
"sync"
"golang.org/x/sys/unix"
)
// Returns an object representing the current OS thread's network namespace
func GetCurrentNS() (NetNS, error) {
return GetNS(getCurrentThreadNetNSPath())
}
func getCurrentThreadNetNSPath() string {
// /proc/self/ns/net returns the namespace of the main thread, not
// of whatever thread this goroutine is running on. Make sure we
// use the thread's net namespace since the thread is switching around
return fmt.Sprintf("/proc/%d/task/%d/ns/net", os.Getpid(), unix.Gettid())
}
// Creates a new persistent network namespace and returns an object
// representing that namespace, without switching to it
func NewNS() (NetNS, error) {
const nsRunDir = "/var/run/netns"
b := make([]byte, 16)
_, err := rand.Reader.Read(b)
if err != nil {
return nil, fmt.Errorf("failed to generate random netns name: %v", err)
}
err = os.MkdirAll(nsRunDir, 0755)
if err != nil {
return nil, err
}
// create an empty file at the mount point
nsName := fmt.Sprintf("cni-%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
nsPath := path.Join(nsRunDir, nsName)
mountPointFd, err := os.Create(nsPath)
if err != nil {
return nil, err
}
mountPointFd.Close()
// Ensure the mount point is cleaned up on errors; if the namespace
// was successfully mounted this will have no effect because the file
// is in-use
defer os.RemoveAll(nsPath)
var wg sync.WaitGroup
wg.Add(1)
// do namespace work in a dedicated goroutine, so that we can safely
// Lock/Unlock OSThread without upsetting the lock/unlock state of
// the caller of this function
var fd *os.File
go (func() {
defer wg.Done()
runtime.LockOSThread()
var origNS NetNS
origNS, err = GetNS(getCurrentThreadNetNSPath())
if err != nil {
return
}
defer origNS.Close()
// create a new netns on the current thread
err = unix.Unshare(unix.CLONE_NEWNET)
if err != nil {
return
}
defer origNS.Set()
// bind mount the new netns from the current thread onto the mount point
err = unix.Mount(getCurrentThreadNetNSPath(), nsPath, "none", unix.MS_BIND, "")
if err != nil {
return
}
fd, err = os.Open(nsPath)
if err != nil {
return
}
})()
wg.Wait()
if err != nil {
unix.Unmount(nsPath, unix.MNT_DETACH)
return nil, fmt.Errorf("failed to create namespace: %v", err)
}
return &netNS{file: fd, mounted: true}, nil
}
func (ns *netNS) Close() error {
if err := ns.errorIfClosed(); err != nil {
return err
}
if err := ns.file.Close(); err != nil {
return fmt.Errorf("Failed to close %q: %v", ns.file.Name(), err)
}
ns.closed = true
if ns.mounted {
if err := unix.Unmount(ns.file.Name(), unix.MNT_DETACH); err != nil {
return fmt.Errorf("Failed to unmount namespace %s: %v", ns.file.Name(), err)
}
if err := os.RemoveAll(ns.file.Name()); err != nil {
return fmt.Errorf("Failed to clean up namespace %s: %v", ns.file.Name(), err)
}
ns.mounted = false
}
return nil
}
func (ns *netNS) Set() error {
if err := ns.errorIfClosed(); err != nil {
return err
}
if _, _, err := unix.Syscall(unix.SYS_SETNS, ns.Fd(), uintptr(unix.CLONE_NEWNET), 0); err != 0 {
return fmt.Errorf("Error switching to ns %v: %v", ns.file.Name(), err)
}
return nil
}

36
vendor/github.com/containernetworking/cni/pkg/ns/ns_unspecified.go generated vendored
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@ -1,36 +0,0 @@
// Copyright 2015-2017 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !linux
package ns
import "github.com/containernetworking/cni/pkg/types"
// Returns an object representing the current OS thread's network namespace
func GetCurrentNS() (NetNS, error) {
return nil, types.NotImplementedError
}
func NewNS() (NetNS, error) {
return nil, types.NotImplementedError
}
func (ns *netNS) Close() error {
return types.NotImplementedError
}
func (ns *netNS) Set() error {
return types.NotImplementedError
}

33
vendor/github.com/containernetworking/cni/pkg/testutils/bad_reader.go generated vendored
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@ -1,33 +0,0 @@
// Copyright 2016 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package testutils
import "errors"
// BadReader is an io.Reader which always errors
type BadReader struct {
Error error
}
func (r *BadReader) Read(buffer []byte) (int, error) {
if r.Error != nil {
return 0, r.Error
}
return 0, errors.New("banana")
}
func (r *BadReader) Close() error {
return nil
}

85
vendor/github.com/containernetworking/cni/pkg/testutils/cmd.go generated vendored
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@ -1,85 +0,0 @@
// Copyright 2016 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package testutils
import (
"io/ioutil"
"os"
"github.com/containernetworking/cni/pkg/types"
"github.com/containernetworking/cni/pkg/version"
)
func envCleanup() {
os.Unsetenv("CNI_COMMAND")
os.Unsetenv("CNI_PATH")
os.Unsetenv("CNI_NETNS")
os.Unsetenv("CNI_IFNAME")
}
func CmdAddWithResult(cniNetns, cniIfname string, conf []byte, f func() error) (types.Result, []byte, error) {
os.Setenv("CNI_COMMAND", "ADD")
os.Setenv("CNI_PATH", os.Getenv("PATH"))
os.Setenv("CNI_NETNS", cniNetns)
os.Setenv("CNI_IFNAME", cniIfname)
defer envCleanup()
// Redirect stdout to capture plugin result
oldStdout := os.Stdout
r, w, err := os.Pipe()
if err != nil {
return nil, nil, err
}
os.Stdout = w
err = f()
w.Close()
var out []byte
if err == nil {
out, err = ioutil.ReadAll(r)
}
os.Stdout = oldStdout
// Return errors after restoring stdout so Ginkgo will correctly
// emit verbose error information on stdout
if err != nil {
return nil, nil, err
}
// Plugin must return result in same version as specified in netconf
versionDecoder := &version.ConfigDecoder{}
confVersion, err := versionDecoder.Decode(conf)
if err != nil {
return nil, nil, err
}
result, err := version.NewResult(confVersion, out)
if err != nil {
return nil, nil, err
}
return result, out, nil
}
func CmdDelWithResult(cniNetns, cniIfname string, f func() error) error {
os.Setenv("CNI_COMMAND", "DEL")
os.Setenv("CNI_PATH", os.Getenv("PATH"))
os.Setenv("CNI_NETNS", cniNetns)
os.Setenv("CNI_IFNAME", cniIfname)
defer envCleanup()
return f()
}

63
vendor/github.com/containernetworking/cni/pkg/utils/hwaddr/hwaddr.go generated vendored
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@ -1,63 +0,0 @@
// Copyright 2016 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hwaddr
import (
"fmt"
"net"
)
const (
ipRelevantByteLen = 4
PrivateMACPrefixString = "0a:58"
)
var (
// private mac prefix safe to use
PrivateMACPrefix = []byte{0x0a, 0x58}
)
type SupportIp4OnlyErr struct{ msg string }
func (e SupportIp4OnlyErr) Error() string { return e.msg }
type MacParseErr struct{ msg string }
func (e MacParseErr) Error() string { return e.msg }
type InvalidPrefixLengthErr struct{ msg string }
func (e InvalidPrefixLengthErr) Error() string { return e.msg }
// GenerateHardwareAddr4 generates 48 bit virtual mac addresses based on the IP4 input.
func GenerateHardwareAddr4(ip net.IP, prefix []byte) (net.HardwareAddr, error) {
switch {
case ip.To4() == nil:
return nil, SupportIp4OnlyErr{msg: "GenerateHardwareAddr4 only supports valid IPv4 address as input"}
case len(prefix) != len(PrivateMACPrefix):
return nil, InvalidPrefixLengthErr{msg: fmt.Sprintf(
"Prefix has length %d instead of %d", len(prefix), len(PrivateMACPrefix)),
}
}
ipByteLen := len(ip)
return (net.HardwareAddr)(
append(
prefix,
ip[ipByteLen-ipRelevantByteLen:ipByteLen]...),
), nil
}

56
vendor/github.com/containernetworking/cni/pkg/utils/sysctl/sysctl_linux.go generated vendored
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@ -1,56 +0,0 @@
// Copyright 2016 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sysctl
import (
"fmt"
"io/ioutil"
"path/filepath"
"strings"
)
// Sysctl provides a method to set/get values from /proc/sys - in linux systems
// new interface to set/get values of variables formerly handled by sysctl syscall
// If optional `params` have only one string value - this function will
// set this value into corresponding sysctl variable
func Sysctl(name string, params ...string) (string, error) {
if len(params) > 1 {
return "", fmt.Errorf("unexcepted additional parameters")
} else if len(params) == 1 {
return setSysctl(name, params[0])
}
return getSysctl(name)
}
func getSysctl(name string) (string, error) {
fullName := filepath.Join("/proc/sys", strings.Replace(name, ".", "/", -1))
fullName = filepath.Clean(fullName)
data, err := ioutil.ReadFile(fullName)
if err != nil {
return "", err
}
return string(data[:len(data)-1]), nil
}
func setSysctl(name, value string) (string, error) {
fullName := filepath.Join("/proc/sys", strings.Replace(name, ".", "/", -1))
fullName = filepath.Clean(fullName)
if err := ioutil.WriteFile(fullName, []byte(value), 0644); err != nil {
return "", err
}
return getSysctl(name)
}

41
vendor/github.com/containernetworking/cni/pkg/utils/utils.go generated vendored
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@ -1,41 +0,0 @@
// Copyright 2016 CNI authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package utils
import (
"crypto/sha512"
"fmt"
)
const (
maxChainLength = 28
chainPrefix = "CNI-"
prefixLength = len(chainPrefix)
)
// Generates a chain name to be used with iptables.
// Ensures that the generated chain name is exactly
// maxChainLength chars in length
func FormatChainName(name string, id string) string {
chainBytes := sha512.Sum512([]byte(name + id))
chain := fmt.Sprintf("%s%x", chainPrefix, chainBytes)
return chain[:maxChainLength]
}
// FormatComment returns a comment used for easier
// rule identification within iptables.
func FormatComment(name string, id string) string {
return fmt.Sprintf("name: %q id: %q", name, id)
}

98
vendor/github.com/onsi/ginkgo/extensions/table/table.go generated vendored Normal file
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@ -0,0 +1,98 @@
/*
Table provides a simple DSL for Ginkgo-native Table-Driven Tests
The godoc documentation describes Table's API. More comprehensive documentation (with examples!) is available at http://onsi.github.io/ginkgo#table-driven-tests
*/
package table
import (
"fmt"
"reflect"
"github.com/onsi/ginkgo"
)
/*
DescribeTable describes a table-driven test.
For example:
DescribeTable("a simple table",
func(x int, y int, expected bool) {
Ω(x > y).Should(Equal(expected))
},
Entry("x > y", 1, 0, true),
Entry("x == y", 0, 0, false),
Entry("x < y", 0, 1, false),
)
The first argument to `DescribeTable` is a string description.
The second argument is a function that will be run for each table entry. Your assertions go here - the function is equivalent to a Ginkgo It.
The subsequent arguments must be of type `TableEntry`. We recommend using the `Entry` convenience constructors.
The `Entry` constructor takes a string description followed by an arbitrary set of parameters. These parameters are passed into your function.
Under the hood, `DescribeTable` simply generates a new Ginkgo `Describe`. Each `Entry` is turned into an `It` within the `Describe`.
It's important to understand that the `Describe`s and `It`s are generated at evaluation time (i.e. when Ginkgo constructs the tree of tests and before the tests run).
Individual Entries can be focused (with FEntry) or marked pending (with PEntry or XEntry). In addition, the entire table can be focused or marked pending with FDescribeTable and PDescribeTable/XDescribeTable.
*/
func DescribeTable(description string, itBody interface{}, entries ...TableEntry) bool {
describeTable(description, itBody, entries, false, false)
return true
}
/*
You can focus a table with `FDescribeTable`. This is equivalent to `FDescribe`.
*/
func FDescribeTable(description string, itBody interface{}, entries ...TableEntry) bool {
describeTable(description, itBody, entries, false, true)
return true
}
/*
You can mark a table as pending with `PDescribeTable`. This is equivalent to `PDescribe`.
*/
func PDescribeTable(description string, itBody interface{}, entries ...TableEntry) bool {
describeTable(description, itBody, entries, true, false)
return true
}
/*
You can mark a table as pending with `XDescribeTable`. This is equivalent to `XDescribe`.
*/
func XDescribeTable(description string, itBody interface{}, entries ...TableEntry) bool {
describeTable(description, itBody, entries, true, false)
return true
}
func describeTable(description string, itBody interface{}, entries []TableEntry, pending bool, focused bool) {
itBodyValue := reflect.ValueOf(itBody)
if itBodyValue.Kind() != reflect.Func {
panic(fmt.Sprintf("DescribeTable expects a function, got %#v", itBody))
}
if pending {
ginkgo.PDescribe(description, func() {
for _, entry := range entries {
entry.generateIt(itBodyValue)
}
})
} else if focused {
ginkgo.FDescribe(description, func() {
for _, entry := range entries {
entry.generateIt(itBodyValue)
}
})
} else {
ginkgo.Describe(description, func() {
for _, entry := range entries {
entry.generateIt(itBodyValue)
}
})
}
}

72
vendor/github.com/onsi/ginkgo/extensions/table/table_entry.go generated vendored Normal file
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@ -0,0 +1,72 @@
package table
import (
"reflect"
"github.com/onsi/ginkgo"
)
/*
TableEntry represents an entry in a table test. You generally use the `Entry` constructor.
*/
type TableEntry struct {
Description string
Parameters []interface{}
Pending bool
Focused bool
}
func (t TableEntry) generateIt(itBody reflect.Value) {
if t.Pending {
ginkgo.PIt(t.Description)
return
}
values := []reflect.Value{}
for _, param := range t.Parameters {
values = append(values, reflect.ValueOf(param))
}
body := func() {
itBody.Call(values)
}
if t.Focused {
ginkgo.FIt(t.Description, body)
} else {
ginkgo.It(t.Description, body)
}
}
/*
Entry constructs a TableEntry.
The first argument is a required description (this becomes the content of the generated Ginkgo `It`).
Subsequent parameters are saved off and sent to the callback passed in to `DescribeTable`.
Each Entry ends up generating an individual Ginkgo It.
*/
func Entry(description string, parameters ...interface{}) TableEntry {
return TableEntry{description, parameters, false, false}
}
/*
You can focus a particular entry with FEntry. This is equivalent to FIt.
*/
func FEntry(description string, parameters ...interface{}) TableEntry {
return TableEntry{description, parameters, false, true}
}
/*
You can mark a particular entry as pending with PEntry. This is equivalent to PIt.
*/
func PEntry(description string, parameters ...interface{}) TableEntry {
return TableEntry{description, parameters, true, false}
}
/*
You can mark a particular entry as pending with XEntry. This is equivalent to XIt.
*/
func XEntry(description string, parameters ...interface{}) TableEntry {
return TableEntry{description, parameters, true, false}
}