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kata_agent_test.go
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// Copyright (c) 2018 Intel Corporation
//
// SPDX-License-Identifier: Apache-2.0
//
package virtcontainers
import (
"bufio"
"context"
"fmt"
"io/ioutil"
"net"
"os"
"path"
"path/filepath"
"reflect"
"strings"
"syscall"
"testing"
vcAnnotations "github.com/kata-containers/runtime/virtcontainers/pkg/annotations"
gpb "github.com/gogo/protobuf/types"
specs "github.com/opencontainers/runtime-spec/specs-go"
"github.com/stretchr/testify/assert"
"google.golang.org/grpc"
aTypes "github.com/kata-containers/agent/pkg/types"
pb "github.com/kata-containers/agent/protocols/grpc"
"github.com/kata-containers/runtime/virtcontainers/device/api"
"github.com/kata-containers/runtime/virtcontainers/device/config"
"github.com/kata-containers/runtime/virtcontainers/device/drivers"
"github.com/kata-containers/runtime/virtcontainers/device/manager"
"github.com/kata-containers/runtime/virtcontainers/persist"
"github.com/kata-containers/runtime/virtcontainers/pkg/mock"
"github.com/kata-containers/runtime/virtcontainers/pkg/rootless"
vcTypes "github.com/kata-containers/runtime/virtcontainers/pkg/types"
"github.com/kata-containers/runtime/virtcontainers/types"
)
var (
testKataProxyURLTempl = "unix://%s/kata-proxy-test.sock"
testBlkDriveFormat = "testBlkDriveFormat"
testBlockDeviceCtrPath = "testBlockDeviceCtrPath"
testDevNo = "testDevNo"
testNvdimmID = "testNvdimmID"
testPCIPath, _ = vcTypes.PciPathFromString("04/02")
testSCSIAddr = "testSCSIAddr"
testVirtPath = "testVirtPath"
)
func proxyHandlerDiscard(c net.Conn) {
buf := make([]byte, 1024)
c.Read(buf)
}
func testGenerateKataProxySockDir() (string, error) {
dir, err := ioutil.TempDir("", "kata-proxy-test")
if err != nil {
return "", err
}
return dir, nil
}
func TestKataAgentConnect(t *testing.T) {
assert := assert.New(t)
proxy := mock.ProxyUnixMock{
ClientHandler: proxyHandlerDiscard,
}
sockDir, err := testGenerateKataProxySockDir()
assert.NoError(err)
defer os.RemoveAll(sockDir)
testKataProxyURL := fmt.Sprintf(testKataProxyURLTempl, sockDir)
err = proxy.Start(testKataProxyURL)
assert.NoError(err)
defer proxy.Stop()
k := &kataAgent{
ctx: context.Background(),
state: KataAgentState{
URL: testKataProxyURL,
},
}
err = k.connect()
assert.NoError(err)
assert.NotNil(k.client)
}
func TestKataAgentDisconnect(t *testing.T) {
assert := assert.New(t)
proxy := mock.ProxyUnixMock{
ClientHandler: proxyHandlerDiscard,
}
sockDir, err := testGenerateKataProxySockDir()
assert.NoError(err)
defer os.RemoveAll(sockDir)
testKataProxyURL := fmt.Sprintf(testKataProxyURLTempl, sockDir)
err = proxy.Start(testKataProxyURL)
assert.NoError(err)
defer proxy.Stop()
k := &kataAgent{
ctx: context.Background(),
state: KataAgentState{
URL: testKataProxyURL,
},
}
assert.NoError(k.connect())
assert.NoError(k.disconnect())
assert.Nil(k.client)
}
type gRPCProxy struct{}
var emptyResp = &gpb.Empty{}
func (p *gRPCProxy) CreateContainer(ctx context.Context, req *pb.CreateContainerRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) StartContainer(ctx context.Context, req *pb.StartContainerRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) ExecProcess(ctx context.Context, req *pb.ExecProcessRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) SignalProcess(ctx context.Context, req *pb.SignalProcessRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) WaitProcess(ctx context.Context, req *pb.WaitProcessRequest) (*pb.WaitProcessResponse, error) {
return &pb.WaitProcessResponse{}, nil
}
func (p *gRPCProxy) ListProcesses(ctx context.Context, req *pb.ListProcessesRequest) (*pb.ListProcessesResponse, error) {
return &pb.ListProcessesResponse{}, nil
}
func (p *gRPCProxy) UpdateContainer(ctx context.Context, req *pb.UpdateContainerRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) RemoveContainer(ctx context.Context, req *pb.RemoveContainerRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) WriteStdin(ctx context.Context, req *pb.WriteStreamRequest) (*pb.WriteStreamResponse, error) {
return &pb.WriteStreamResponse{}, nil
}
func (p *gRPCProxy) ReadStdout(ctx context.Context, req *pb.ReadStreamRequest) (*pb.ReadStreamResponse, error) {
return &pb.ReadStreamResponse{}, nil
}
func (p *gRPCProxy) ReadStderr(ctx context.Context, req *pb.ReadStreamRequest) (*pb.ReadStreamResponse, error) {
return &pb.ReadStreamResponse{}, nil
}
func (p *gRPCProxy) CloseStdin(ctx context.Context, req *pb.CloseStdinRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) TtyWinResize(ctx context.Context, req *pb.TtyWinResizeRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) CreateSandbox(ctx context.Context, req *pb.CreateSandboxRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) DestroySandbox(ctx context.Context, req *pb.DestroySandboxRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) UpdateInterface(ctx context.Context, req *pb.UpdateInterfaceRequest) (*aTypes.Interface, error) {
return &aTypes.Interface{}, nil
}
func (p *gRPCProxy) UpdateRoutes(ctx context.Context, req *pb.UpdateRoutesRequest) (*pb.Routes, error) {
return &pb.Routes{}, nil
}
func (p *gRPCProxy) ListInterfaces(ctx context.Context, req *pb.ListInterfacesRequest) (*pb.Interfaces, error) {
return &pb.Interfaces{}, nil
}
func (p *gRPCProxy) ListRoutes(ctx context.Context, req *pb.ListRoutesRequest) (*pb.Routes, error) {
return &pb.Routes{}, nil
}
func (p *gRPCProxy) AddARPNeighbors(ctx context.Context, req *pb.AddARPNeighborsRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) OnlineCPUMem(ctx context.Context, req *pb.OnlineCPUMemRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) StatsContainer(ctx context.Context, req *pb.StatsContainerRequest) (*pb.StatsContainerResponse, error) {
return &pb.StatsContainerResponse{}, nil
}
func (p *gRPCProxy) Check(ctx context.Context, req *pb.CheckRequest) (*pb.HealthCheckResponse, error) {
return &pb.HealthCheckResponse{}, nil
}
func (p *gRPCProxy) Version(ctx context.Context, req *pb.CheckRequest) (*pb.VersionCheckResponse, error) {
return &pb.VersionCheckResponse{}, nil
}
func (p *gRPCProxy) PauseContainer(ctx context.Context, req *pb.PauseContainerRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) ResumeContainer(ctx context.Context, req *pb.ResumeContainerRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) ReseedRandomDev(ctx context.Context, req *pb.ReseedRandomDevRequest) (*gpb.Empty, error) {
return emptyResp, nil
}
func (p *gRPCProxy) GetGuestDetails(ctx context.Context, req *pb.GuestDetailsRequest) (*pb.GuestDetailsResponse, error) {
return &pb.GuestDetailsResponse{}, nil
}
func (p *gRPCProxy) SetGuestDateTime(ctx context.Context, req *pb.SetGuestDateTimeRequest) (*gpb.Empty, error) {
return &gpb.Empty{}, nil
}
func (p *gRPCProxy) CopyFile(ctx context.Context, req *pb.CopyFileRequest) (*gpb.Empty, error) {
return &gpb.Empty{}, nil
}
func (p *gRPCProxy) StartTracing(ctx context.Context, req *pb.StartTracingRequest) (*gpb.Empty, error) {
return &gpb.Empty{}, nil
}
func (p *gRPCProxy) StopTracing(ctx context.Context, req *pb.StopTracingRequest) (*gpb.Empty, error) {
return &gpb.Empty{}, nil
}
func (p *gRPCProxy) MemHotplugByProbe(ctx context.Context, req *pb.MemHotplugByProbeRequest) (*gpb.Empty, error) {
return &gpb.Empty{}, nil
}
func (p *gRPCProxy) GetOOMEvent(ctx context.Context, req *pb.GetOOMEventRequest) (*pb.OOMEvent, error) {
return &pb.OOMEvent{}, nil
}
func gRPCRegister(s *grpc.Server, srv interface{}) {
switch g := srv.(type) {
case *gRPCProxy:
pb.RegisterAgentServiceServer(s, g)
pb.RegisterHealthServer(s, g)
}
}
var reqList = []interface{}{
&pb.CreateSandboxRequest{},
&pb.DestroySandboxRequest{},
&pb.ExecProcessRequest{},
&pb.CreateContainerRequest{},
&pb.StartContainerRequest{},
&pb.RemoveContainerRequest{},
&pb.SignalProcessRequest{},
&pb.CheckRequest{},
&pb.WaitProcessRequest{},
&pb.StatsContainerRequest{},
&pb.SetGuestDateTimeRequest{},
}
func TestKataAgentSendReq(t *testing.T) {
assert := assert.New(t)
impl := &gRPCProxy{}
proxy := mock.ProxyGRPCMock{
GRPCImplementer: impl,
GRPCRegister: gRPCRegister,
}
sockDir, err := testGenerateKataProxySockDir()
assert.Nil(err)
defer os.RemoveAll(sockDir)
testKataProxyURL := fmt.Sprintf(testKataProxyURLTempl, sockDir)
err = proxy.Start(testKataProxyURL)
assert.Nil(err)
defer proxy.Stop()
k := &kataAgent{
ctx: context.Background(),
state: KataAgentState{
URL: testKataProxyURL,
},
}
for _, req := range reqList {
_, err = k.sendReq(req)
assert.Nil(err)
}
sandbox := &Sandbox{}
container := &Container{}
execid := "processFooBar"
err = k.startContainer(sandbox, container)
assert.Nil(err)
err = k.signalProcess(container, execid, syscall.SIGKILL, true)
assert.Nil(err)
err = k.winsizeProcess(container, execid, 100, 200)
assert.Nil(err)
_, err = k.processListContainer(sandbox, Container{}, ProcessListOptions{})
assert.Nil(err)
err = k.updateContainer(sandbox, Container{}, specs.LinuxResources{})
assert.Nil(err)
err = k.pauseContainer(sandbox, Container{})
assert.Nil(err)
err = k.resumeContainer(sandbox, Container{})
assert.Nil(err)
err = k.onlineCPUMem(1, true)
assert.Nil(err)
_, err = k.statsContainer(sandbox, Container{})
assert.Nil(err)
err = k.check()
assert.Nil(err)
_, err = k.waitProcess(container, execid)
assert.Nil(err)
_, err = k.writeProcessStdin(container, execid, []byte{'c'})
assert.Nil(err)
err = k.closeProcessStdin(container, execid)
assert.Nil(err)
_, err = k.readProcessStdout(container, execid, []byte{})
assert.Nil(err)
_, err = k.readProcessStderr(container, execid, []byte{})
assert.Nil(err)
_, err = k.getOOMEvent()
assert.Nil(err)
}
func TestHandleEphemeralStorage(t *testing.T) {
k := kataAgent{}
var ociMounts []specs.Mount
mountSource := "/tmp/mountPoint"
mount := specs.Mount{
Type: KataEphemeralDevType,
Source: mountSource,
}
ociMounts = append(ociMounts, mount)
epheStorages := k.handleEphemeralStorage(ociMounts)
epheMountPoint := epheStorages[0].GetMountPoint()
expected := filepath.Join(ephemeralPath(), filepath.Base(mountSource))
assert.Equal(t, epheMountPoint, expected,
"Ephemeral mount point didn't match: got %s, expecting %s", epheMountPoint, expected)
}
func TestHandleLocalStorage(t *testing.T) {
k := kataAgent{}
var ociMounts []specs.Mount
mountSource := "mountPoint"
mount := specs.Mount{
Type: KataLocalDevType,
Source: mountSource,
}
sandboxID := "sandboxid"
rootfsSuffix := "rootfs"
ociMounts = append(ociMounts, mount)
localStorages := k.handleLocalStorage(ociMounts, sandboxID, rootfsSuffix)
assert.NotNil(t, localStorages)
assert.Equal(t, len(localStorages), 1)
localMountPoint := localStorages[0].GetMountPoint()
expected := filepath.Join(kataGuestSharedDir(), sandboxID, rootfsSuffix, KataLocalDevType, filepath.Base(mountSource))
assert.Equal(t, localMountPoint, expected)
}
func TestHandleHugepages(t *testing.T) {
if os.Getuid() != 0 {
t.Skip("Test disabled as requires root user")
}
assert := assert.New(t)
dir, err := ioutil.TempDir("", "hugepages-test")
assert.Nil(err)
defer os.RemoveAll(dir)
k := kataAgent{}
var mounts []specs.Mount
var hugepageLimits []specs.LinuxHugepageLimit
hugepageDirs := [2]string{"hugepages-1Gi", "hugepages-2Mi"}
options := [2]string{"pagesize=1024M", "pagesize=2M"}
for i := 0; i < 2; i++ {
target := path.Join(dir, hugepageDirs[i])
err := os.MkdirAll(target, 0777)
assert.NoError(err, "Unable to create dir %s", target)
err = syscall.Mount("nodev", target, "hugetlbfs", uintptr(0), options[i])
assert.NoError(err, "Unable to mount %s", target)
defer syscall.Unmount(target, 0)
defer os.RemoveAll(target)
mount := specs.Mount{
Type: KataLocalDevType,
Source: target,
}
mounts = append(mounts, mount)
}
hugepageLimits = []specs.LinuxHugepageLimit{
{
Pagesize: "1GB",
Limit: 1073741824,
},
{
Pagesize: "2MB",
Limit: 134217728,
},
}
hugepages, err := k.handleHugepages(mounts, hugepageLimits)
assert.NoError(err, "Unable to handle hugepages %v", hugepageLimits)
assert.NotNil(hugepages)
assert.Equal(len(hugepages), 2)
}
func TestHandleDeviceBlockVolume(t *testing.T) {
k := kataAgent{}
tests := []struct {
BlockDeviceDriver string
inputMount Mount
inputDev *drivers.BlockDevice
resultVol *pb.Storage
}{
{
inputDev: &drivers.BlockDevice{
BlockDrive: &config.BlockDrive{
Pmem: true,
NvdimmID: testNvdimmID,
Format: testBlkDriveFormat,
},
},
inputMount: Mount{},
resultVol: &pb.Storage{
Driver: kataNvdimmDevType,
Source: fmt.Sprintf("/dev/pmem%s", testNvdimmID),
Fstype: testBlkDriveFormat,
Options: []string{"dax"},
},
},
{
BlockDeviceDriver: config.VirtioBlockCCW,
inputMount: Mount{
Type: "bind",
Options: []string{"ro"},
},
inputDev: &drivers.BlockDevice{
BlockDrive: &config.BlockDrive{
DevNo: testDevNo,
},
},
resultVol: &pb.Storage{
Driver: kataBlkCCWDevType,
Source: testDevNo,
Fstype: "bind",
Options: []string{"ro"},
},
},
{
BlockDeviceDriver: config.VirtioBlock,
inputMount: Mount{},
inputDev: &drivers.BlockDevice{
BlockDrive: &config.BlockDrive{
PCIPath: testPCIPath,
VirtPath: testVirtPath,
},
},
resultVol: &pb.Storage{
Driver: kataBlkDevType,
Source: testPCIPath.String(),
},
},
{
BlockDeviceDriver: config.VirtioBlock,
inputDev: &drivers.BlockDevice{
BlockDrive: &config.BlockDrive{
VirtPath: testVirtPath,
},
},
resultVol: &pb.Storage{
Driver: kataBlkDevType,
Source: testVirtPath,
},
},
{
BlockDeviceDriver: config.VirtioMmio,
inputDev: &drivers.BlockDevice{
BlockDrive: &config.BlockDrive{
VirtPath: testVirtPath,
},
},
resultVol: &pb.Storage{
Driver: kataMmioBlkDevType,
Source: testVirtPath,
},
},
{
BlockDeviceDriver: config.VirtioSCSI,
inputDev: &drivers.BlockDevice{
BlockDrive: &config.BlockDrive{
SCSIAddr: testSCSIAddr,
},
},
resultVol: &pb.Storage{
Driver: kataSCSIDevType,
Source: testSCSIAddr,
},
},
}
for _, test := range tests {
c := &Container{
sandbox: &Sandbox{
config: &SandboxConfig{
HypervisorConfig: HypervisorConfig{
BlockDeviceDriver: test.BlockDeviceDriver,
},
},
},
}
vol, _ := k.handleDeviceBlockVolume(c, test.inputMount, test.inputDev)
assert.True(t, reflect.DeepEqual(vol, test.resultVol),
"Volume didn't match: got %+v, expecting %+v",
vol, test.resultVol)
}
}
func TestHandleBlockVolume(t *testing.T) {
k := kataAgent{}
c := &Container{
id: "100",
}
containers := map[string]*Container{}
containers[c.id] = c
// Create a devices for VhostUserBlk, standard DeviceBlock and direct assigned Block device
vDevID := "MockVhostUserBlk"
bDevID := "MockDeviceBlock"
dDevID := "MockDeviceBlockDirect"
vDestination := "/VhostUserBlk/destination"
bDestination := "/DeviceBlock/destination"
dDestination := "/DeviceDirectBlock/destination"
vPCIPath, err := vcTypes.PciPathFromString("01/02")
assert.NoError(t, err)
bPCIPath, err := vcTypes.PciPathFromString("03/04")
assert.NoError(t, err)
dPCIPath, err := vcTypes.PciPathFromString("05/06")
assert.NoError(t, err)
vDev := drivers.NewVhostUserBlkDevice(&config.DeviceInfo{ID: vDevID})
bDev := drivers.NewBlockDevice(&config.DeviceInfo{ID: bDevID})
dDev := drivers.NewBlockDevice(&config.DeviceInfo{ID: dDevID})
vDev.VhostUserDeviceAttrs = &config.VhostUserDeviceAttrs{PCIPath: vPCIPath}
bDev.BlockDrive = &config.BlockDrive{PCIPath: bPCIPath}
dDev.BlockDrive = &config.BlockDrive{PCIPath: dPCIPath}
var devices []api.Device
devices = append(devices, vDev, bDev, dDev)
// Create a VhostUserBlk mount and a DeviceBlock mount
var mounts []Mount
vMount := Mount{
BlockDeviceID: vDevID,
Destination: vDestination,
}
bMount := Mount{
BlockDeviceID: bDevID,
Destination: bDestination,
Type: "bind",
Options: []string{"bind"},
}
dMount := Mount{
BlockDeviceID: dDevID,
Destination: dDestination,
Type: "ext4",
Options: []string{"ro"},
}
mounts = append(mounts, vMount, bMount, dMount)
tmpDir := "/vhost/user/dir"
dm := manager.NewDeviceManager(manager.VirtioBlock, true, tmpDir, devices)
sConfig := SandboxConfig{}
sConfig.HypervisorConfig.BlockDeviceDriver = manager.VirtioBlock
sandbox := Sandbox{
id: "100",
containers: containers,
hypervisor: &mockHypervisor{},
devManager: dm,
ctx: context.Background(),
config: &sConfig,
}
containers[c.id].sandbox = &sandbox
containers[c.id].mounts = mounts
volumeStorages, err := k.handleBlockVolumes(c)
assert.Nil(t, err, "Error while handling block volumes")
vStorage := &pb.Storage{
MountPoint: vDestination,
Fstype: "bind",
Options: []string{"bind"},
Driver: kataBlkDevType,
Source: vPCIPath.String(),
}
bStorage := &pb.Storage{
MountPoint: bDestination,
Fstype: "bind",
Options: []string{"bind"},
Driver: kataBlkDevType,
Source: bPCIPath.String(),
}
dStorage := &pb.Storage{
MountPoint: dDestination,
Fstype: "ext4",
Options: []string{"ro"},
Driver: kataBlkDevType,
Source: dPCIPath.String(),
}
assert.Equal(t, vStorage, volumeStorages[0], "Error while handle VhostUserBlk type block volume")
assert.Equal(t, bStorage, volumeStorages[1], "Error while handle BlockDevice type block volume")
assert.Equal(t, dStorage, volumeStorages[2], "Error while handle direct BlockDevice type block volume")
}
func TestAppendDevicesEmptyContainerDeviceList(t *testing.T) {
k := kataAgent{}
devList := []*pb.Device{}
expected := []*pb.Device{}
ctrDevices := []ContainerDevice{}
c := &Container{
sandbox: &Sandbox{
devManager: manager.NewDeviceManager("virtio-scsi", false, "", nil),
},
devices: ctrDevices,
}
updatedDevList := k.appendDevices(devList, c)
assert.True(t, reflect.DeepEqual(updatedDevList, expected),
"Device lists didn't match: got %+v, expecting %+v",
updatedDevList, expected)
}
func TestAppendDevices(t *testing.T) {
k := kataAgent{}
id := "test-append-block"
ctrDevices := []api.Device{
&drivers.BlockDevice{
GenericDevice: &drivers.GenericDevice{
ID: id,
},
BlockDrive: &config.BlockDrive{
PCIPath: testPCIPath,
},
},
}
sandboxConfig := &SandboxConfig{
HypervisorConfig: HypervisorConfig{
BlockDeviceDriver: config.VirtioBlock,
},
}
c := &Container{
sandbox: &Sandbox{
devManager: manager.NewDeviceManager("virtio-blk", false, "", ctrDevices),
config: sandboxConfig,
},
}
c.devices = append(c.devices, ContainerDevice{
ID: id,
ContainerPath: testBlockDeviceCtrPath,
})
devList := []*pb.Device{}
expected := []*pb.Device{
{
Type: kataBlkDevType,
ContainerPath: testBlockDeviceCtrPath,
Id: testPCIPath.String(),
},
}
updatedDevList := k.appendDevices(devList, c)
assert.True(t, reflect.DeepEqual(updatedDevList, expected),
"Device lists didn't match: got %+v, expecting %+v",
updatedDevList, expected)
}
func TestAppendVhostUserBlkDevices(t *testing.T) {
k := kataAgent{}
id := "test-append-vhost-user-blk"
ctrDevices := []api.Device{
&drivers.VhostUserBlkDevice{
GenericDevice: &drivers.GenericDevice{
ID: id,
},
VhostUserDeviceAttrs: &config.VhostUserDeviceAttrs{
Type: config.VhostUserBlk,
PCIPath: testPCIPath,
},
},
}
sandboxConfig := &SandboxConfig{
HypervisorConfig: HypervisorConfig{
BlockDeviceDriver: config.VirtioBlock,
},
}
testVhostUserStorePath := "/test/vhost/user/store/path"
c := &Container{
sandbox: &Sandbox{
devManager: manager.NewDeviceManager("virtio-blk", true, testVhostUserStorePath, ctrDevices),
config: sandboxConfig,
},
}
c.devices = append(c.devices, ContainerDevice{
ID: id,
ContainerPath: testBlockDeviceCtrPath,
})
devList := []*pb.Device{}
expected := []*pb.Device{
{
Type: kataBlkDevType,
ContainerPath: testBlockDeviceCtrPath,
Id: testPCIPath.String(),
},
}
updatedDevList := k.appendDevices(devList, c)
assert.True(t, reflect.DeepEqual(updatedDevList, expected),
"Device lists didn't match: got %+v, expecting %+v",
updatedDevList, expected)
}
func TestConstraintGRPCSpec(t *testing.T) {
assert := assert.New(t)
expectedCgroupPath := "/foo/bar"
g := &pb.Spec{
Hooks: &pb.Hooks{},
Mounts: []pb.Mount{
{Destination: "/dev/shm"},
},
Linux: &pb.Linux{
Seccomp: &pb.LinuxSeccomp{},
Namespaces: []pb.LinuxNamespace{
{
Type: specs.NetworkNamespace,
Path: "/abc/123",
},
{
Type: specs.MountNamespace,
Path: "/abc/123",
},
},
Resources: &pb.LinuxResources{
Devices: []pb.LinuxDeviceCgroup{},
Memory: &pb.LinuxMemory{},
CPU: &pb.LinuxCPU{},
Pids: &pb.LinuxPids{},
BlockIO: &pb.LinuxBlockIO{},
HugepageLimits: []pb.LinuxHugepageLimit{},
Network: &pb.LinuxNetwork{},
},
CgroupsPath: "system.slice:foo:bar",
Devices: []pb.LinuxDevice{
{
Path: "/dev/vfio/1",
Type: "c",
},
{
Path: "/dev/vfio/2",
Type: "c",
},
},
},
Process: &pb.Process{
SelinuxLabel: "foo",
},
}
k := kataAgent{}
k.constraintGRPCSpec(g, true)
// check nil fields
assert.Nil(g.Hooks)
assert.NotNil(g.Linux.Seccomp)
assert.Nil(g.Linux.Resources.Devices)
assert.NotNil(g.Linux.Resources.Memory)
assert.Nil(g.Linux.Resources.Pids)
assert.Nil(g.Linux.Resources.BlockIO)
assert.Nil(g.Linux.Resources.HugepageLimits)
assert.Nil(g.Linux.Resources.Network)
assert.NotNil(g.Linux.Resources.CPU)
assert.Equal(g.Process.SelinuxLabel, "")
// check namespaces
assert.Len(g.Linux.Namespaces, 1)
assert.Empty(g.Linux.Namespaces[0].Path)
// check mounts
assert.Len(g.Mounts, 1)
// check cgroup path
assert.Equal(expectedCgroupPath, g.Linux.CgroupsPath)
// check Linux devices
assert.Empty(g.Linux.Devices)
}
func TestHandleShm(t *testing.T) {
assert := assert.New(t)
k := kataAgent{}
sandbox := &Sandbox{
shmSize: 8192,
}
var ociMounts []specs.Mount
mount := specs.Mount{
Type: "bind",
Destination: "/dev/shm",
}
ociMounts = append(ociMounts, mount)
k.handleShm(ociMounts, sandbox)
assert.Len(ociMounts, 1)
assert.NotEmpty(ociMounts[0].Destination)
assert.Equal(ociMounts[0].Destination, "/dev/shm")
assert.Equal(ociMounts[0].Type, "bind")
assert.NotEmpty(ociMounts[0].Source, filepath.Join(kataGuestSharedDir(), shmDir))
assert.Equal(ociMounts[0].Options, []string{"rbind"})
sandbox.shmSize = 0
k.handleShm(ociMounts, sandbox)
assert.Len(ociMounts, 1)
assert.Equal(ociMounts[0].Destination, "/dev/shm")
assert.Equal(ociMounts[0].Type, "tmpfs")
assert.Equal(ociMounts[0].Source, "shm")
sizeOption := fmt.Sprintf("size=%d", DefaultShmSize)
assert.Equal(ociMounts[0].Options, []string{"noexec", "nosuid", "nodev", "mode=1777", sizeOption})
// In case the type of mount is ephemeral, the container mount is not
// shared with the sandbox shm.
ociMounts[0].Type = KataEphemeralDevType
mountSource := "/tmp/mountPoint"
ociMounts[0].Source = mountSource
k.handleShm(ociMounts, sandbox)
assert.Len(ociMounts, 1)
assert.Equal(ociMounts[0].Type, KataEphemeralDevType)
assert.NotEmpty(ociMounts[0].Source, mountSource)
epheStorages := k.handleEphemeralStorage(ociMounts)
epheMountPoint := epheStorages[0].GetMountPoint()
expected := filepath.Join(ephemeralPath(), filepath.Base(mountSource))
assert.Equal(epheMountPoint, expected,
"Ephemeral mount point didn't match: got %s, expecting %s", epheMountPoint, expected)
}
func testIsPidNamespacePresent(grpcSpec *pb.Spec) bool {
for _, ns := range grpcSpec.Linux.Namespaces {
if ns.Type == string(specs.PIDNamespace) {
return true
}
}
return false
}
func TestHandlePidNamespace(t *testing.T) {
assert := assert.New(t)
g := &pb.Spec{
Linux: &pb.Linux{
Namespaces: []pb.LinuxNamespace{
{
Type: specs.NetworkNamespace,
Path: "/abc/123",
},
{
Type: specs.MountNamespace,
Path: "/abc/123",
},
},
},
}
sandbox := &Sandbox{}
k := kataAgent{}
sharedPid := k.handlePidNamespace(g, sandbox)
assert.False(sharedPid)
assert.False(testIsPidNamespacePresent(g))
pidNs := pb.LinuxNamespace{
Type: string(specs.PIDNamespace),
Path: "",
}
utsNs := pb.LinuxNamespace{
Type: specs.UTSNamespace,
Path: "",
}
g.Linux.Namespaces = append(g.Linux.Namespaces, pidNs)
g.Linux.Namespaces = append(g.Linux.Namespaces, utsNs)
sharedPid = k.handlePidNamespace(g, sandbox)
assert.False(sharedPid)
assert.False(testIsPidNamespacePresent(g))
pidNs = pb.LinuxNamespace{
Type: string(specs.PIDNamespace),
Path: "/proc/112/ns/pid",
}
g.Linux.Namespaces = append(g.Linux.Namespaces, pidNs)
sharedPid = k.handlePidNamespace(g, sandbox)
assert.True(sharedPid)
assert.False(testIsPidNamespacePresent(g))
}
func TestAgentConfigure(t *testing.T) {
assert := assert.New(t)
dir, err := ioutil.TempDir("", "kata-agent-test")
assert.Nil(err)
defer os.RemoveAll(dir)
k := &kataAgent{}
h := &mockHypervisor{}
c := KataAgentConfig{}
id := "foobar"
err = k.configure(h, id, dir, true, c)
assert.Nil(err)
err = k.configure(h, id, dir, true, c)