/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox_linux_test.go is in golang-github-docker-libnetwork-dev 0.8.0-dev.2+git20170202.599.45b4086-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import (
"crypto/rand"
"encoding/hex"
"io"
"net"
"os"
"path/filepath"
"strings"
"syscall"
"testing"
"time"
"github.com/docker/libnetwork/testutils"
"github.com/docker/libnetwork/types"
"github.com/vishvananda/netlink"
"github.com/vishvananda/netlink/nl"
"github.com/vishvananda/netns"
)
const (
vethName1 = "wierdlongname1"
vethName2 = "wierdlongname2"
vethName3 = "wierdlongname3"
vethName4 = "wierdlongname4"
sboxIfaceName = "containername"
)
func generateRandomName(prefix string, size int) (string, error) {
id := make([]byte, 32)
if _, err := io.ReadFull(rand.Reader, id); err != nil {
return "", err
}
return prefix + hex.EncodeToString(id)[:size], nil
}
func newKey(t *testing.T) (string, error) {
name, err := generateRandomName("netns", 12)
if err != nil {
return "", err
}
name = filepath.Join("/tmp", name)
if _, err := os.Create(name); err != nil {
return "", err
}
// Set the rpmCleanupPeriod to be low to make the test run quicker
gpmLock.Lock()
gpmCleanupPeriod = 2 * time.Second
gpmLock.Unlock()
return name, nil
}
func newInfo(hnd *netlink.Handle, t *testing.T) (Sandbox, error) {
veth := &netlink.Veth{
LinkAttrs: netlink.LinkAttrs{Name: vethName1, TxQLen: 0},
PeerName: vethName2}
if err := hnd.LinkAdd(veth); err != nil {
return nil, err
}
// Store the sandbox side pipe interface
// This is needed for cleanup on DeleteEndpoint()
intf1 := &nwIface{}
intf1.srcName = vethName2
intf1.dstName = sboxIfaceName
ip4, addr, err := net.ParseCIDR("192.168.1.100/24")
if err != nil {
return nil, err
}
intf1.address = addr
intf1.address.IP = ip4
ip6, addrv6, err := net.ParseCIDR("2001:DB8::ABCD/48")
if err != nil {
return nil, err
}
intf1.addressIPv6 = addrv6
intf1.addressIPv6.IP = ip6
_, route, err := net.ParseCIDR("192.168.2.1/32")
if err != nil {
return nil, err
}
intf1.routes = []*net.IPNet{route}
intf2 := &nwIface{}
intf2.srcName = "testbridge"
intf2.dstName = sboxIfaceName
intf2.bridge = true
veth = &netlink.Veth{
LinkAttrs: netlink.LinkAttrs{Name: vethName3, TxQLen: 0},
PeerName: vethName4}
if err := hnd.LinkAdd(veth); err != nil {
return nil, err
}
intf3 := &nwIface{}
intf3.srcName = vethName4
intf3.dstName = sboxIfaceName
intf3.master = "testbridge"
info := &networkNamespace{iFaces: []*nwIface{intf1, intf2, intf3}}
info.gw = net.ParseIP("192.168.1.1")
// sinfo.GatewayIPv6 = net.ParseIP("2001:DB8::1")
info.gwv6 = net.ParseIP("fe80::1")
return info, nil
}
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")
}
sbNs, err := netns.GetFromPath(s.Key())
if err != nil {
t.Fatalf("Failed top open network namespace path %q: %v", s.Key(), err)
}
defer sbNs.Close()
nh, err := netlink.NewHandleAt(sbNs)
if err != nil {
t.Fatal(err)
}
defer nh.Delete()
for _, suffix := range ifaceSuffixes {
_, err = nh.LinkByName(sboxIfaceName + suffix)
if err != nil {
t.Fatalf("Could not find the interface %s inside the sandbox: %v",
sboxIfaceName+suffix, err)
}
}
}
func verifyCleanup(t *testing.T, s Sandbox, wait bool) {
if wait {
time.Sleep(time.Duration(gpmCleanupPeriod * 2))
}
if _, err := os.Stat(s.Key()); err == nil {
if wait {
t.Fatalf("The sandbox path %s is not getting cleaned up even after twice the cleanup period", s.Key())
} else {
t.Fatalf("The sandbox path %s is not cleaned up after running gc", s.Key())
}
}
}
func TestScanStatistics(t *testing.T) {
data :=
"Inter-| Receive | Transmit\n" +
" face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed\n" +
" eth0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n" +
" wlan0: 7787685 11141 0 0 0 0 0 0 1681390 7220 0 0 0 0 0 0\n" +
" lo: 783782 1853 0 0 0 0 0 0 783782 1853 0 0 0 0 0 0\n" +
"lxcbr0: 0 0 0 0 0 0 0 0 9006 61 0 0 0 0 0 0\n"
i := &types.InterfaceStatistics{}
if err := scanInterfaceStats(data, "wlan0", i); err != nil {
t.Fatal(err)
}
if i.TxBytes != 1681390 || i.TxPackets != 7220 || i.RxBytes != 7787685 || i.RxPackets != 11141 {
t.Fatalf("Error scanning the statistics")
}
if err := scanInterfaceStats(data, "lxcbr0", i); err != nil {
t.Fatal(err)
}
if i.TxBytes != 9006 || i.TxPackets != 61 || i.RxBytes != 0 || i.RxPackets != 0 {
t.Fatalf("Error scanning the statistics")
}
}
func TestDisableIPv6DAD(t *testing.T) {
if testutils.RunningOnCircleCI() {
t.Skipf("Skipping as not supported on CIRCLE CI kernel")
}
defer testutils.SetupTestOSContext(t)()
ipv6, _ := types.ParseCIDR("2001:db8::44/64")
iface := &nwIface{addressIPv6: ipv6}
veth := &netlink.Veth{
LinkAttrs: netlink.LinkAttrs{Name: "sideA"},
PeerName: "sideB",
}
nlh, err := netlink.NewHandle(syscall.NETLINK_ROUTE)
if err != nil {
t.Fatal(err)
}
err = nlh.LinkAdd(veth)
if err != nil {
t.Fatal(err)
}
link, err := nlh.LinkByName("sideA")
if err != nil {
t.Fatal(err)
}
err = setInterfaceIPv6(nlh, link, iface)
if err != nil {
t.Fatal(err)
}
addrList, err := nlh.AddrList(link, nl.FAMILY_V6)
if err != nil {
t.Fatal(err)
}
if addrList[0].Flags&syscall.IFA_F_NODAD == 0 {
t.Fatalf("Unexpected interface flags: 0x%x. Expected to contain 0x%x", addrList[0].Flags, syscall.IFA_F_NODAD)
}
}
func TestSetInterfaceIP(t *testing.T) {
defer testutils.SetupTestOSContext(t)()
ipv4, _ := types.ParseCIDR("172.30.0.33/24")
ipv6, _ := types.ParseCIDR("2001:db8::44/64")
iface := &nwIface{address: ipv4, addressIPv6: ipv6}
nlh, err := netlink.NewHandle(syscall.NETLINK_ROUTE)
if err != nil {
t.Fatal(err)
}
if err := nlh.LinkAdd(&netlink.Veth{
LinkAttrs: netlink.LinkAttrs{Name: "sideA"},
PeerName: "sideB",
}); err != nil {
t.Fatal(err)
}
linkA, err := nlh.LinkByName("sideA")
if err != nil {
t.Fatal(err)
}
linkB, err := nlh.LinkByName("sideB")
if err != nil {
t.Fatal(err)
}
if err := nlh.LinkSetUp(linkA); err != nil {
t.Fatal(err)
}
if err := nlh.LinkSetUp(linkB); err != nil {
t.Fatal(err)
}
if err := setInterfaceIP(nlh, linkA, iface); err != nil {
t.Fatal(err)
}
if err := setInterfaceIPv6(nlh, linkA, iface); err != nil {
t.Fatal(err)
}
err = setInterfaceIP(nlh, linkB, iface)
if err == nil {
t.Fatalf("Expected route conflict error, but succeeded")
}
if !strings.Contains(err.Error(), "conflicts with existing route") {
t.Fatalf("Unexpected error: %v", err)
}
err = setInterfaceIPv6(nlh, linkB, iface)
if err == nil {
t.Fatalf("Expected route conflict error, but succeeded")
}
if !strings.Contains(err.Error(), "conflicts with existing route") {
t.Fatalf("Unexpected error: %v", err)
}
}
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