Golang netns.Get函数代码示例

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本文整理汇总了Golang中github.com/vishvananda/netns.Get函数的典型用法代码示例。如果您正苦于以下问题：Golang Get函数的具体用法？Golang Get怎么用？Golang Get使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Get函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: programGateway

func programGateway(path string, gw net.IP) error {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return err
	}
	defer origns.Close()

	f, err := os.OpenFile(path, os.O_RDONLY, 0)
	if err != nil {
		return fmt.Errorf("failed get network namespace %q: %v", path, err)
	}
	defer f.Close()

	nsFD := f.Fd()
	if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
		return err
	}
	defer netns.Set(origns)

	gwRoutes, err := netlink.RouteGet(gw)
	if err != nil {
		return fmt.Errorf("route for the gateway could not be found: %v", err)
	}

	return netlink.RouteAdd(&netlink.Route{
		Scope:     netlink.SCOPE_UNIVERSE,
		LinkIndex: gwRoutes[0].LinkIndex,
		Gw:        gw,
	})
}

开发者ID:colebrumley，项目名称:docker，代码行数:33，代码来源:configure_linux.go

示例2: setUpVLan

func setUpVLan(cid, ips string, pid int, veth netlink.Link) bool {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		logs.Info("Get orignal namespace failed", err)
		return false
	}
	defer origns.Close()

	ns, err := netns.GetFromPid(pid)
	if err != nil {
		logs.Info("Get container namespace failed", err)
		return false
	}

	netns.Set(ns)
	defer ns.Close()
	defer netns.Set(origns)

	if err := BindAndSetup(veth, ips); err != nil {
		logs.Info("Bind and setup NIC failed", err)
		DelVlan(veth)
		return false
	}

	logs.Info("Add vlan device success", cid[:12])
	return true
}

开发者ID:CMGS，项目名称:eru-agent，代码行数:30，代码来源:vlan_linux.go

示例3: createGlobalInstance

func createGlobalInstance(t *testing.T) {
	var err error
	defer close(start)

	origns, err = netns.Get()
	if err != nil {
		t.Fatal(err)
	}

	if netutils.IsRunningInContainer() {
		testns = origns
	} else {
		testns, err = netns.New()
		if err != nil {
			t.Fatal(err)
		}
	}

	netOption := options.Generic{
		netlabel.GenericData: options.Generic{
			"BridgeName":            "network",
			"AllowNonDefaultBridge": true,
		},
	}
	net, err := createTestNetwork(bridgeNetType, "network", netOption)
	if err != nil {
		t.Fatal("new network")
	}

	_, err = net.CreateEndpoint("ep1")
	if err != nil {
		t.Fatal("createendpoint")
	}
}

开发者ID:alecbenson，项目名称:libnetwork，代码行数:34，代码来源:libnetwork_test.go

示例4: nsInvoke

func nsInvoke(path string, prefunc func(nsFD int) error, postfunc func(callerFD int) error) error {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return err
	}
	defer origns.Close()

	f, err := os.OpenFile(path, os.O_RDONLY, 0)
	if err != nil {
		return fmt.Errorf("failed get network namespace %q: %v", path, err)
	}
	defer f.Close()

	nsFD := f.Fd()

	// Invoked before the namespace switch happens but after the namespace file
	// handle is obtained.
	if err := prefunc(int(nsFD)); err != nil {
		return fmt.Errorf("failed in prefunc: %v", err)
	}

	if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
		return err
	}
	defer netns.Set(origns)

	// Invoked after the namespace switch.
	return postfunc(int(origns))
}

开发者ID:MathewAniyan，项目名称:docker，代码行数:32，代码来源:namespace_linux.go

示例5: checkSandbox

func checkSandbox(t *testing.T, info libnetwork.EndpointInfo) {
	origns, err := netns.Get()
	if err != nil {
		t.Fatalf("Could not get the current netns: %v", err)
	}
	defer origns.Close()

	key := info.Sandbox().Key()
	f, err := os.OpenFile(key, os.O_RDONLY, 0)
	if err != nil {
		t.Fatalf("Failed to open network namespace path %q: %v", key, err)
	}
	defer f.Close()

	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	nsFD := f.Fd()
	if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
		t.Fatalf("Setting to the namespace pointed to by the sandbox %s failed: %v", key, err)
	}
	defer netns.Set(origns)

	_, err = netlink.LinkByName("eth0")
	if err != nil {
		t.Fatalf("Could not find the interface eth0 inside the sandbox: %v", err)
	}

	_, err = netlink.LinkByName("eth1")
	if err != nil {
		t.Fatalf("Could not find the interface eth1 inside the sandbox: %v", err)
	}
}

开发者ID:hurrygeek，项目名称:libnetwork，代码行数:33，代码来源:libnetwork_test.go

示例6: createNetworkNamespace

func createNetworkNamespace(path string, osCreate bool) (*Info, error) {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return nil, err
	}
	defer origns.Close()

	if err := createNamespaceFile(path); err != nil {
		return nil, err
	}

	cmd := &exec.Cmd{
		Path:   reexec.Self(),
		Args:   append([]string{"netns-create"}, path),
		Stdout: os.Stdout,
		Stderr: os.Stderr,
	}
	if osCreate {
		cmd.SysProcAttr = &syscall.SysProcAttr{}
		cmd.SysProcAttr.Cloneflags = syscall.CLONE_NEWNET
	}
	if err := cmd.Run(); err != nil {
		return nil, fmt.Errorf("namespace creation reexec command failed: %v", err)
	}

	interfaces := []*Interface{}
	info := &Info{Interfaces: interfaces}
	return info, nil
}

开发者ID:AdamOssenford，项目名称:docker-pi，代码行数:32，代码来源:namespace_linux.go

示例7: NewNetNSProbe

func NewNetNSProbe(g *graph.Graph, n *graph.Node, runPath ...string) (*NetNSProbe, error) {
	if uid := os.Geteuid(); uid != 0 {
		return nil, errors.New("NetNS probe has to be run as root")
	}

	path := "/var/run/netns"
	if len(runPath) > 0 && runPath[0] != "" {
		path = runPath[0]
	}

	rootNs, err := netns.Get()
	if err != nil {
		return nil, errors.New("Failed to get root namespace")
	}
	defer rootNs.Close()

	var stats syscall.Stat_t
	if err := syscall.Fstat(int(rootNs), &stats); err != nil {
		return nil, errors.New("Failed to stat root namespace")
	}

	return &NetNSProbe{
		Graph:       g,
		Root:        n,
		nsnlProbes:  make(map[string]*NetNsNetLinkTopoUpdater),
		pathToNetNS: make(map[string]*NetNs),
		runPath:     path,
		rootNsDev:   stats.Dev,
	}, nil
}

开发者ID:skydive-project，项目名称:skydive，代码行数:30，代码来源:netns.go

示例8: nsInvoke

func nsInvoke(path string, inNsfunc func(callerFD int) error) error {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return err
	}
	defer origns.Close()

	f, err := os.OpenFile(path, os.O_RDONLY, 0)
	if err != nil {
		return fmt.Errorf("failed get network namespace %q: %v", path, err)
	}
	defer f.Close()

	nsFD := f.Fd()

	if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
		return err
	}
	defer netns.Set(origns)

	// Invoked after the namespace switch.
	return inNsfunc(int(origns))
}

开发者ID:AdamOssenford，项目名称:docker-pi，代码行数:26，代码来源:sandbox.go

示例9: NewNetNsContext

func NewNetNsContext(path string) (*NetNSContext, error) {
	runtime.LockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return nil, fmt.Errorf("Error while getting current ns: %s", err.Error())
	}

	newns, err := netns.GetFromPath(path)
	if err != nil {
		origns.Close()
		return nil, fmt.Errorf("Error while opening %s: %s", path, err.Error())
	}

	if err = netns.Set(newns); err != nil {
		newns.Close()
		origns.Close()
		return nil, fmt.Errorf("Error while switching from root ns to %s: %s", path, err.Error())
	}

	return &NetNSContext{
		origns: origns,
		newns:  newns,
	}, nil
}

开发者ID:skydive-project，项目名称:skydive，代码行数:25，代码来源:common.go

示例10: Init

// Init initializes a new network namespace
func Init() {
	var err error
	initNs, err = netns.Get()
	if err != nil {
		log.Errorf("could not get initial namespace: %v", err)
	}
}

开发者ID:CtrlZvi，项目名称:public-ipv6-bridge，代码行数:8，代码来源:init_linux.go

示例11: setupNetNs

func setupNetNs(nsPath string) (*os.Process, error) {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return nil, err
	}
	defer origns.Close()

	f, err := os.OpenFile(nsPath, os.O_RDONLY, 0)
	if err != nil {
		return nil, fmt.Errorf("failed to get network namespace %q: %v", nsPath, err)
	}
	defer f.Close()

	nsFD := f.Fd()
	if err := netns.Set(netns.NsHandle(nsFD)); err != nil {
		return nil, fmt.Errorf("failed to set network namespace %q: %v", nsPath, err)
	}
	defer netns.Set(origns)

	cmd := exec.Command("/bin/sh", "-c", "while true; do sleep 1; done")
	if err := cmd.Start(); err != nil {
		return nil, fmt.Errorf("failed to start netns process: %v", err)
	}

	return cmd.Process, nil
}

开发者ID:colebrumley，项目名称:docker，代码行数:29，代码来源:driver.go

示例12: addRoute

func addRoute(cid, CIDR, ifc string, pid int) bool {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origins, err := netns.Get()
	if err != nil {
		logs.Info("Get orignal namespace failed", err)
		return false
	}
	defer origins.Close()

	ns, err := netns.GetFromPid(pid)
	if err != nil {
		logs.Info("Get container namespace failed", err)
		return false
	}

	netns.Set(ns)
	defer ns.Close()
	defer netns.Set(origins)

	if err := addRouteByLink(CIDR, ifc); err != nil {
		logs.Info("Add route failed", err)
		return false
	}

	logs.Info("Add route success", cid[:12], CIDR, ifc)
	return true
}

开发者ID:CMGS，项目名称:eru-agent，代码行数:29，代码来源:route_linux.go

示例13: verifySandbox

func verifySandbox(t *testing.T, s Sandbox, ifaceSuffixes []string) {
	_, ok := s.(*networkNamespace)
	if !ok {
		t.Fatalf("The sandox interface returned is not of type networkNamespace")
	}

	origns, err := netns.Get()
	if err != nil {
		t.Fatalf("Could not get the current netns: %v", err)
	}
	defer origns.Close()

	f, err := os.OpenFile(s.Key(), os.O_RDONLY, 0)
	if err != nil {
		t.Fatalf("Failed top open network namespace path %q: %v", s.Key(), err)
	}
	defer f.Close()

	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	nsFD := f.Fd()
	if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
		t.Fatalf("Setting to the namespace pointed to by the sandbox %s failed: %v", s.Key(), err)
	}
	defer netns.Set(origns)

	for _, suffix := range ifaceSuffixes {
		_, err = netlink.LinkByName(sboxIfaceName + suffix)
		if err != nil {
			t.Fatalf("Could not find the interface %s inside the sandbox: %v",
				sboxIfaceName+suffix, err)
		}
	}
}

开发者ID:winsx，项目名称:libnetwork，代码行数:35，代码来源:sandbox_linux_test.go

示例14: setDefaultRoute

func setDefaultRoute(cid, gateway string, pid int) bool {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origins, err := netns.Get()
	if err != nil {
		logs.Info("Get orignal namespace failed", err)
		return false
	}
	defer origins.Close()

	ns, err := netns.GetFromPid(pid)
	if err != nil {
		logs.Info("Get container namespace failed", err)
		return false
	}

	netns.Set(ns)
	defer ns.Close()
	defer netns.Set(origins)

	if err := delDefaultRoute(); err != nil {
		logs.Info("Delete default routing table failed", err)
		return false
	}

	if err := addDefaultRoute(gateway); err != nil {
		logs.Info("Add default route failed", err)
		return false
	}

	logs.Info("Set default route success", cid[:12], gateway)
	return true
}

开发者ID:CMGS，项目名称:eru-agent，代码行数:34，代码来源:route_linux.go

示例15: createGlobalInstance

func createGlobalInstance(t *testing.T) {
	var err error
	defer close(start)

	origns, err = netns.Get()
	if err != nil {
		t.Fatal(err)
	}

	if netutils.IsRunningInContainer() {
		testns = origns
	} else {
		testns, err = netns.New()
		if err != nil {
			t.Fatal(err)
		}
	}

	netOption := options.Generic{
		netlabel.GenericData: options.Generic{
			"BridgeName":            "network",
			"AllowNonDefaultBridge": true,
		},
	}

	net1, err := controller.NetworkByName("testhost")
	if err != nil {
		t.Fatal(err)
	}

	net2, err := createTestNetwork("bridge", "network2", netOption)
	if err != nil {
		t.Fatal(err)
	}

	_, err = net1.CreateEndpoint("pep1")
	if err != nil {
		t.Fatal(err)
	}

	_, err = net2.CreateEndpoint("pep2")
	if err != nil {
		t.Fatal(err)
	}

	_, err = net2.CreateEndpoint("pep3")
	if err != nil {
		t.Fatal(err)
	}

	if sboxes[first-1], err = controller.NewSandbox(fmt.Sprintf("%drace", first), libnetwork.OptionUseDefaultSandbox()); err != nil {
		t.Fatal(err)
	}
	for thd := first + 1; thd <= last; thd++ {
		if sboxes[thd-1], err = controller.NewSandbox(fmt.Sprintf("%drace", thd)); err != nil {
			t.Fatal(err)
		}
	}
}

开发者ID:hurrygeek，项目名称:libnetwork，代码行数:59，代码来源:libnetwork_test.go

示例16: AddInterface

func (n *networkNamespace) AddInterface(i *Interface) error {
	n.Lock()
	i.DstName = fmt.Sprintf("%s%d", i.DstName, n.nextIfIndex)
	n.nextIfIndex++
	n.Unlock()

	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return err
	}
	defer origns.Close()

	f, err := os.OpenFile(n.path, os.O_RDONLY, 0)
	if err != nil {
		return fmt.Errorf("failed get network namespace %q: %v", n.path, err)
	}
	defer f.Close()

	// Find the network interface identified by the SrcName attribute.
	iface, err := netlink.LinkByName(i.SrcName)
	if err != nil {
		return err
	}

	// Move the network interface to the destination namespace.
	nsFD := f.Fd()
	if err := netlink.LinkSetNsFd(iface, int(nsFD)); err != nil {
		return err
	}

	if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
		return err
	}
	defer netns.Set(origns)

	// Down the interface before configuring
	if err := netlink.LinkSetDown(iface); err != nil {
		return err
	}

	// Configure the interface now this is moved in the proper namespace.
	if err := configureInterface(iface, i); err != nil {
		return err
	}

	// Up the interface.
	if err := netlink.LinkSetUp(iface); err != nil {
		return err
	}

	n.Lock()
	n.sinfo.Interfaces = append(n.sinfo.Interfaces, i)
	n.Unlock()

	return nil
}

开发者ID:justone，项目名称:docker，代码行数:59，代码来源:namespace_linux.go

示例17: RemoveInterface

func (n *networkNamespace) RemoveInterface(i *Interface) error {
	runtime.LockOSThread()
	defer runtime.UnlockOSThread()

	origns, err := netns.Get()
	if err != nil {
		return err
	}
	defer origns.Close()

	f, err := os.OpenFile(n.path, os.O_RDONLY, 0)
	if err != nil {
		return fmt.Errorf("failed get network namespace %q: %v", n.path, err)
	}
	defer f.Close()

	nsFD := f.Fd()
	if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
		return err
	}
	defer netns.Set(origns)

	// Find the network inteerface identified by the DstName attribute.
	iface, err := netlink.LinkByName(i.DstName)
	if err != nil {
		return err
	}

	// Down the interface before configuring
	if err := netlink.LinkSetDown(iface); err != nil {
		return err
	}

	err = netlink.LinkSetName(iface, i.SrcName)
	if err != nil {
		fmt.Println("LinkSetName failed: ", err)
		return err
	}

	// Move the network interface to caller namespace.
	if err := netlink.LinkSetNsFd(iface, int(origns)); err != nil {
		fmt.Println("LinkSetNsPid failed: ", err)
		return err
	}

	n.Lock()
	for index, intf := range n.sinfo.Interfaces {
		if intf == i {
			n.sinfo.Interfaces = append(n.sinfo.Interfaces[:index], n.sinfo.Interfaces[index+1:]...)
			break
		}
	}
	n.Unlock()

	return nil
}

开发者ID:AlphaStaxLLC，项目名称:libnetwork，代码行数:56，代码来源:namespace_linux.go

示例18: Init

// Init initializes a new network namespace
func Init() {
	var err error
	initNs, err = netns.Get()
	if err != nil {
		log.Errorf("could not get initial namespace: %v", err)
	}
	initNl, err = netlink.NewHandle(getSupportedNlFamilies()...)
	if err != nil {
		log.Errorf("could not create netlink handle on initial namespace: %v", err)
	}
}

开发者ID:CadeLaRen，项目名称:docker-3，代码行数:12，代码来源:init_linux.go

示例19: ProxyLoop

func (tcp *tcpProxySocket) ProxyLoop(service string, proxier *Proxier) {
	info, found := proxier.getServiceInfo(service)
	if !found {
		glog.Errorf("Failed to find service: %s", service)
		return
	}
	for {
		if !info.isActive() {
			break
		}

		// Block until a connection is made.
		inConn, err := tcp.Accept()
		if err != nil {
			glog.Errorf("Accept failed: %v", err)
			continue
		}
		glog.Infof("Accepted TCP connection from %v to %v", inConn.RemoteAddr(), inConn.LocalAddr())
		ns, endpoint, err := proxier.loadBalancer.NextEndpoint(service, inConn.RemoteAddr())
		if err != nil {
			glog.Errorf("Couldn't find an endpoint for %s %v", service, err)
			inConn.Close()
			continue
		}
		glog.Infof("Mapped service %s to endpoint %s", service, endpoint)
		// TODO: This could spin up a new goroutine to make the outbound connection,
		// and keep accepting inbound traffic.
		if ns.IsOpen() {
			glog.Infof("Using namespace %v for endpoint %s", ns, endpoint)
			runtime.LockOSThread()
			defer runtime.UnlockOSThread()
			origns, err := netns.Get()
			if err != nil {
				glog.Errorf("Failed to get original ns: %v", err)
				continue
			}
			err = netns.Set(ns)
			if err != nil {
				glog.Errorf("Failed to set ns: %v", err)
				continue
			}
			defer netns.Set(origns)
		}
		outConn, err := retryDial("tcp", endpoint, endpointDialTimeout)
		if err != nil {
			// TODO: Try another endpoint?
			glog.Errorf("Dial failed: %v", err)
			inConn.Close()
			continue
		}
		// Spin up an async copy loop.
		proxyTCP(inConn.(*net.TCPConn), outConn.(*net.TCPConn))
	}
}

开发者ID:vishvananda，项目名称:wormhole，代码行数:54，代码来源:proxier.go

示例20: createGlobalInstance

func createGlobalInstance(t *testing.T) {
	var err error
	defer close(start)

	origns, err = netns.Get()
	if err != nil {
		t.Fatal(err)
	}

	if netutils.IsRunningInContainer() {
		testns = origns
	} else {
		testns, err = netns.New()
		if err != nil {
			t.Fatal(err)
		}
	}

	netOption := options.Generic{
		netlabel.GenericData: options.Generic{
			"BridgeName":            "network",
			"AllowNonDefaultBridge": true,
		},
	}

	net1, err := controller.NetworkByName("testhost")
	if err != nil {
		t.Fatal(err)
	}

	net2, err := createTestNetwork("bridge", "network2", netOption)
	if err != nil {
		t.Fatal(err)
	}

	_, err = net1.CreateEndpoint("pep1")
	if err != nil {
		t.Fatal(err)
	}

	_, err = net2.CreateEndpoint("pep2")
	if err != nil {
		t.Fatal(err)
	}

	_, err = net2.CreateEndpoint("pep3")
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:aduermael，项目名称:libnetwork，代码行数:50，代码来源:libnetwork_test.go

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