forked from containerd/containerd
/
container_create_linux_test.go
1490 lines (1409 loc) · 49.5 KB
/
container_create_linux_test.go
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/*
Copyright The containerd 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 server
import (
"context"
"errors"
"fmt"
"os"
"path/filepath"
"reflect"
"strings"
"testing"
"github.com/containerd/containerd/containers"
"github.com/containerd/containerd/contrib/apparmor"
"github.com/containerd/containerd/contrib/seccomp"
"github.com/containerd/containerd/mount"
"github.com/containerd/containerd/oci"
imagespec "github.com/opencontainers/image-spec/specs-go/v1"
runtimespec "github.com/opencontainers/runtime-spec/specs-go"
"github.com/opencontainers/selinux/go-selinux"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
"github.com/containerd/containerd/pkg/cap"
"github.com/containerd/containerd/pkg/cri/annotations"
"github.com/containerd/containerd/pkg/cri/config"
"github.com/containerd/containerd/pkg/cri/opts"
"github.com/containerd/containerd/pkg/cri/util"
ctrdutil "github.com/containerd/containerd/pkg/cri/util"
ostesting "github.com/containerd/containerd/pkg/os/testing"
)
func getCreateContainerTestData() (*runtime.ContainerConfig, *runtime.PodSandboxConfig,
*imagespec.ImageConfig, func(*testing.T, string, string, uint32, *runtimespec.Spec)) {
config := &runtime.ContainerConfig{
Metadata: &runtime.ContainerMetadata{
Name: "test-name",
Attempt: 1,
},
Image: &runtime.ImageSpec{
Image: "sha256:c75bebcdd211f41b3a460c7bf82970ed6c75acaab9cd4c9a4e125b03ca113799",
},
Command: []string{"test", "command"},
Args: []string{"test", "args"},
WorkingDir: "test-cwd",
Envs: []*runtime.KeyValue{
{Key: "k1", Value: "v1"},
{Key: "k2", Value: "v2"},
{Key: "k3", Value: "v3=v3bis"},
{Key: "k4", Value: "v4=v4bis=foop"},
},
Mounts: []*runtime.Mount{
// everything default
{
ContainerPath: "container-path-1",
HostPath: "host-path-1",
},
// readOnly
{
ContainerPath: "container-path-2",
HostPath: "host-path-2",
Readonly: true,
},
},
Labels: map[string]string{"a": "b"},
Annotations: map[string]string{"ca-c": "ca-d"},
Linux: &runtime.LinuxContainerConfig{
Resources: &runtime.LinuxContainerResources{
CpuPeriod: 100,
CpuQuota: 200,
CpuShares: 300,
MemoryLimitInBytes: 400,
OomScoreAdj: 500,
CpusetCpus: "0-1",
CpusetMems: "2-3",
Unified: map[string]string{"memory.min": "65536", "memory.swap.max": "1024"},
},
SecurityContext: &runtime.LinuxContainerSecurityContext{
SupplementalGroups: []int64{1111, 2222},
NoNewPrivs: true,
},
},
}
sandboxConfig := &runtime.PodSandboxConfig{
Metadata: &runtime.PodSandboxMetadata{
Name: "test-sandbox-name",
Uid: "test-sandbox-uid",
Namespace: "test-sandbox-ns",
Attempt: 2,
},
Annotations: map[string]string{"c": "d"},
Linux: &runtime.LinuxPodSandboxConfig{
CgroupParent: "/test/cgroup/parent",
SecurityContext: &runtime.LinuxSandboxSecurityContext{},
},
}
imageConfig := &imagespec.ImageConfig{
Env: []string{"ik1=iv1", "ik2=iv2", "ik3=iv3=iv3bis", "ik4=iv4=iv4bis=boop"},
Entrypoint: []string{"/entrypoint"},
Cmd: []string{"cmd"},
WorkingDir: "/workspace",
}
specCheck := func(t *testing.T, id string, sandboxID string, sandboxPid uint32, spec *runtimespec.Spec) {
assert.Equal(t, relativeRootfsPath, spec.Root.Path)
assert.Equal(t, []string{"test", "command", "test", "args"}, spec.Process.Args)
assert.Equal(t, "test-cwd", spec.Process.Cwd)
assert.Contains(t, spec.Process.Env, "k1=v1", "k2=v2", "k3=v3=v3bis", "ik4=iv4=iv4bis=boop")
assert.Contains(t, spec.Process.Env, "ik1=iv1", "ik2=iv2", "ik3=iv3=iv3bis", "k4=v4=v4bis=foop")
t.Logf("Check cgroups bind mount")
checkMount(t, spec.Mounts, "cgroup", "/sys/fs/cgroup", "cgroup", []string{"ro"}, nil)
t.Logf("Check bind mount")
checkMount(t, spec.Mounts, "host-path-1", "container-path-1", "bind", []string{"rbind", "rprivate", "rw"}, nil)
checkMount(t, spec.Mounts, "host-path-2", "container-path-2", "bind", []string{"rbind", "rprivate", "ro"}, nil)
t.Logf("Check resource limits")
assert.EqualValues(t, *spec.Linux.Resources.CPU.Period, 100)
assert.EqualValues(t, *spec.Linux.Resources.CPU.Quota, 200)
assert.EqualValues(t, *spec.Linux.Resources.CPU.Shares, 300)
assert.EqualValues(t, spec.Linux.Resources.CPU.Cpus, "0-1")
assert.EqualValues(t, spec.Linux.Resources.CPU.Mems, "2-3")
assert.EqualValues(t, spec.Linux.Resources.Unified, map[string]string{"memory.min": "65536", "memory.swap.max": "1024"})
assert.EqualValues(t, *spec.Linux.Resources.Memory.Limit, 400)
assert.EqualValues(t, *spec.Process.OOMScoreAdj, 500)
t.Logf("Check supplemental groups")
assert.Contains(t, spec.Process.User.AdditionalGids, uint32(1111))
assert.Contains(t, spec.Process.User.AdditionalGids, uint32(2222))
t.Logf("Check no_new_privs")
assert.Equal(t, spec.Process.NoNewPrivileges, true)
t.Logf("Check cgroup path")
assert.Equal(t, getCgroupsPath("/test/cgroup/parent", id), spec.Linux.CgroupsPath)
t.Logf("Check namespaces")
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
Type: runtimespec.NetworkNamespace,
Path: opts.GetNetworkNamespace(sandboxPid),
})
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
Type: runtimespec.IPCNamespace,
Path: opts.GetIPCNamespace(sandboxPid),
})
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
Type: runtimespec.UTSNamespace,
Path: opts.GetUTSNamespace(sandboxPid),
})
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
Type: runtimespec.PIDNamespace,
Path: opts.GetPIDNamespace(sandboxPid),
})
t.Logf("Check PodSandbox annotations")
assert.Contains(t, spec.Annotations, annotations.SandboxID)
assert.EqualValues(t, spec.Annotations[annotations.SandboxID], sandboxID)
assert.Contains(t, spec.Annotations, annotations.ContainerType)
assert.EqualValues(t, spec.Annotations[annotations.ContainerType], annotations.ContainerTypeContainer)
assert.Contains(t, spec.Annotations, annotations.SandboxNamespace)
assert.EqualValues(t, spec.Annotations[annotations.SandboxNamespace], "test-sandbox-ns")
assert.Contains(t, spec.Annotations, annotations.SandboxUID)
assert.EqualValues(t, spec.Annotations[annotations.SandboxUID], "test-sandbox-uid")
assert.Contains(t, spec.Annotations, annotations.SandboxName)
assert.EqualValues(t, spec.Annotations[annotations.SandboxName], "test-sandbox-name")
assert.Contains(t, spec.Annotations, annotations.ImageName)
assert.EqualValues(t, spec.Annotations[annotations.ImageName], testImageName)
}
return config, sandboxConfig, imageConfig, specCheck
}
func TestContainerCapabilities(t *testing.T) {
testID := "test-id"
testSandboxID := "sandbox-id"
testContainerName := "container-name"
testPid := uint32(1234)
allCaps := cap.Known()
for desc, test := range map[string]struct {
capability *runtime.Capability
includes []string
excludes []string
}{
"should be able to add/drop capabilities": {
capability: &runtime.Capability{
AddCapabilities: []string{"SYS_ADMIN"},
DropCapabilities: []string{"CHOWN"},
},
includes: []string{"CAP_SYS_ADMIN"},
excludes: []string{"CAP_CHOWN"},
},
"should be able to add all capabilities": {
capability: &runtime.Capability{
AddCapabilities: []string{"ALL"},
},
includes: allCaps,
},
"should be able to drop all capabilities": {
capability: &runtime.Capability{
DropCapabilities: []string{"ALL"},
},
excludes: allCaps,
},
"should be able to drop capabilities with add all": {
capability: &runtime.Capability{
AddCapabilities: []string{"ALL"},
DropCapabilities: []string{"CHOWN"},
},
includes: util.SubtractStringSlice(allCaps, "CAP_CHOWN"),
excludes: []string{"CAP_CHOWN"},
},
"should be able to add capabilities with drop all": {
capability: &runtime.Capability{
AddCapabilities: []string{"SYS_ADMIN"},
DropCapabilities: []string{"ALL"},
},
includes: []string{"CAP_SYS_ADMIN"},
excludes: util.SubtractStringSlice(allCaps, "CAP_SYS_ADMIN"),
},
} {
t.Logf("TestCase %q", desc)
containerConfig, sandboxConfig, imageConfig, specCheck := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
c.allCaps = allCaps
containerConfig.Linux.SecurityContext.Capabilities = test.capability
spec, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
require.NoError(t, err)
if selinux.GetEnabled() {
assert.NotEqual(t, "", spec.Process.SelinuxLabel)
assert.NotEqual(t, "", spec.Linux.MountLabel)
}
specCheck(t, testID, testSandboxID, testPid, spec)
for _, include := range test.includes {
assert.Contains(t, spec.Process.Capabilities.Bounding, include)
assert.Contains(t, spec.Process.Capabilities.Effective, include)
assert.Contains(t, spec.Process.Capabilities.Permitted, include)
}
for _, exclude := range test.excludes {
assert.NotContains(t, spec.Process.Capabilities.Bounding, exclude)
assert.NotContains(t, spec.Process.Capabilities.Effective, exclude)
assert.NotContains(t, spec.Process.Capabilities.Permitted, exclude)
}
assert.Empty(t, spec.Process.Capabilities.Inheritable)
assert.Empty(t, spec.Process.Capabilities.Ambient)
}
}
func TestContainerSpecTty(t *testing.T) {
testID := "test-id"
testSandboxID := "sandbox-id"
testContainerName := "container-name"
testPid := uint32(1234)
containerConfig, sandboxConfig, imageConfig, specCheck := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
for _, tty := range []bool{true, false} {
containerConfig.Tty = tty
spec, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
require.NoError(t, err)
specCheck(t, testID, testSandboxID, testPid, spec)
assert.Equal(t, tty, spec.Process.Terminal)
if tty {
assert.Contains(t, spec.Process.Env, "TERM=xterm")
} else {
assert.NotContains(t, spec.Process.Env, "TERM=xterm")
}
}
}
func TestContainerSpecDefaultPath(t *testing.T) {
testID := "test-id"
testSandboxID := "sandbox-id"
testContainerName := "container-name"
testPid := uint32(1234)
expectedDefault := "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
containerConfig, sandboxConfig, imageConfig, specCheck := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
for _, pathenv := range []string{"", "PATH=/usr/local/bin/games"} {
expected := expectedDefault
if pathenv != "" {
imageConfig.Env = append(imageConfig.Env, pathenv)
expected = pathenv
}
spec, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
require.NoError(t, err)
specCheck(t, testID, testSandboxID, testPid, spec)
assert.Contains(t, spec.Process.Env, expected)
}
}
func TestContainerSpecReadonlyRootfs(t *testing.T) {
testID := "test-id"
testSandboxID := "sandbox-id"
testContainerName := "container-name"
testPid := uint32(1234)
containerConfig, sandboxConfig, imageConfig, specCheck := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
for _, readonly := range []bool{true, false} {
containerConfig.Linux.SecurityContext.ReadonlyRootfs = readonly
spec, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
require.NoError(t, err)
specCheck(t, testID, testSandboxID, testPid, spec)
assert.Equal(t, readonly, spec.Root.Readonly)
}
}
func TestContainerSpecWithExtraMounts(t *testing.T) {
testID := "test-id"
testSandboxID := "sandbox-id"
testContainerName := "container-name"
testPid := uint32(1234)
containerConfig, sandboxConfig, imageConfig, specCheck := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
mountInConfig := &runtime.Mount{
// Test cleanpath
ContainerPath: "test-container-path/",
HostPath: "test-host-path",
Readonly: false,
}
containerConfig.Mounts = append(containerConfig.Mounts, mountInConfig)
extraMounts := []*runtime.Mount{
{
ContainerPath: "test-container-path",
HostPath: "test-host-path-extra",
Readonly: true,
},
{
ContainerPath: "/sys",
HostPath: "test-sys-extra",
Readonly: false,
},
{
ContainerPath: "/dev",
HostPath: "test-dev-extra",
Readonly: false,
},
}
spec, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, extraMounts, ociRuntime)
require.NoError(t, err)
specCheck(t, testID, testSandboxID, testPid, spec)
var mounts, sysMounts, devMounts []runtimespec.Mount
for _, m := range spec.Mounts {
if strings.HasPrefix(m.Destination, "test-container-path") {
mounts = append(mounts, m)
} else if m.Destination == "/sys" {
sysMounts = append(sysMounts, m)
} else if strings.HasPrefix(m.Destination, "/dev") {
devMounts = append(devMounts, m)
}
}
t.Logf("CRI mount should override extra mount")
require.Len(t, mounts, 1)
assert.Equal(t, "test-host-path", mounts[0].Source)
assert.Contains(t, mounts[0].Options, "rw")
t.Logf("Extra mount should override default mount")
require.Len(t, sysMounts, 1)
assert.Equal(t, "test-sys-extra", sysMounts[0].Source)
assert.Contains(t, sysMounts[0].Options, "rw")
t.Logf("Dev mount should override all default dev mounts")
require.Len(t, devMounts, 1)
assert.Equal(t, "test-dev-extra", devMounts[0].Source)
assert.Contains(t, devMounts[0].Options, "rw")
}
func TestContainerAndSandboxPrivileged(t *testing.T) {
testID := "test-id"
testSandboxID := "sandbox-id"
testContainerName := "container-name"
testPid := uint32(1234)
containerConfig, sandboxConfig, imageConfig, _ := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
for desc, test := range map[string]struct {
containerPrivileged bool
sandboxPrivileged bool
expectError bool
}{
"privileged container in non-privileged sandbox should fail": {
containerPrivileged: true,
sandboxPrivileged: false,
expectError: true,
},
"privileged container in privileged sandbox should be fine": {
containerPrivileged: true,
sandboxPrivileged: true,
expectError: false,
},
"non-privileged container in privileged sandbox should be fine": {
containerPrivileged: false,
sandboxPrivileged: true,
expectError: false,
},
"non-privileged container in non-privileged sandbox should be fine": {
containerPrivileged: false,
sandboxPrivileged: false,
expectError: false,
},
} {
t.Logf("TestCase %q", desc)
containerConfig.Linux.SecurityContext.Privileged = test.containerPrivileged
sandboxConfig.Linux.SecurityContext = &runtime.LinuxSandboxSecurityContext{
Privileged: test.sandboxPrivileged,
}
_, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
if test.expectError {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
}
}
func TestContainerMounts(t *testing.T) {
const testSandboxID = "test-id"
for desc, test := range map[string]struct {
statFn func(string) (os.FileInfo, error)
criMounts []*runtime.Mount
securityContext *runtime.LinuxContainerSecurityContext
expectedMounts []*runtime.Mount
}{
"should setup ro mount when rootfs is read-only": {
securityContext: &runtime.LinuxContainerSecurityContext{
ReadonlyRootfs: true,
},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: true,
SelinuxRelabel: true,
},
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: true,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: true,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",
HostPath: filepath.Join(testStateDir, sandboxesDir, testSandboxID, "shm"),
Readonly: false,
SelinuxRelabel: true,
},
},
},
"should setup rw mount when rootfs is read-write": {
securityContext: &runtime.LinuxContainerSecurityContext{},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",
HostPath: filepath.Join(testStateDir, sandboxesDir, testSandboxID, "shm"),
Readonly: false,
SelinuxRelabel: true,
},
},
},
"should use host /dev/shm when host ipc is set": {
securityContext: &runtime.LinuxContainerSecurityContext{
NamespaceOptions: &runtime.NamespaceOption{Ipc: runtime.NamespaceMode_NODE},
},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",
HostPath: "/dev/shm",
Readonly: false,
},
},
},
"should skip container mounts if already mounted by CRI": {
criMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hostname",
HostPath: "/test-etc-hostname",
},
{
ContainerPath: "/etc/hosts",
HostPath: "/test-etc-host",
},
{
ContainerPath: resolvConfPath,
HostPath: "test-resolv-conf",
},
{
ContainerPath: "/dev/shm",
HostPath: "test-dev-shm",
},
},
securityContext: &runtime.LinuxContainerSecurityContext{},
expectedMounts: nil,
},
"should skip hostname mount if the old sandbox doesn't have hostname file": {
statFn: func(path string) (os.FileInfo, error) {
assert.Equal(t, filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"), path)
return nil, errors.New("random error")
},
securityContext: &runtime.LinuxContainerSecurityContext{},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",
HostPath: filepath.Join(testStateDir, sandboxesDir, testSandboxID, "shm"),
Readonly: false,
SelinuxRelabel: true,
},
},
},
} {
config := &runtime.ContainerConfig{
Metadata: &runtime.ContainerMetadata{
Name: "test-name",
Attempt: 1,
},
Mounts: test.criMounts,
Linux: &runtime.LinuxContainerConfig{
SecurityContext: test.securityContext,
},
}
c := newTestCRIService()
c.os.(*ostesting.FakeOS).StatFn = test.statFn
mounts := c.containerMounts(testSandboxID, config)
assert.Equal(t, test.expectedMounts, mounts, desc)
}
}
func TestPrivilegedBindMount(t *testing.T) {
testPid := uint32(1234)
c := newTestCRIService()
testSandboxID := "sandbox-id"
testContainerName := "container-name"
containerConfig, sandboxConfig, imageConfig, _ := getCreateContainerTestData()
ociRuntime := config.Runtime{}
for desc, test := range map[string]struct {
privileged bool
expectedSysFSRO bool
expectedCgroupFSRO bool
}{
"sysfs and cgroupfs should mount as 'ro' by default": {
expectedSysFSRO: true,
expectedCgroupFSRO: true,
},
"sysfs and cgroupfs should not mount as 'ro' if privileged": {
privileged: true,
expectedSysFSRO: false,
expectedCgroupFSRO: false,
},
} {
t.Logf("TestCase %q", desc)
containerConfig.Linux.SecurityContext.Privileged = test.privileged
sandboxConfig.Linux.SecurityContext.Privileged = test.privileged
spec, err := c.containerSpec(t.Name(), testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
assert.NoError(t, err)
if test.expectedSysFSRO {
checkMount(t, spec.Mounts, "sysfs", "/sys", "sysfs", []string{"ro"}, []string{"rw"})
} else {
checkMount(t, spec.Mounts, "sysfs", "/sys", "sysfs", []string{"rw"}, []string{"ro"})
}
if test.expectedCgroupFSRO {
checkMount(t, spec.Mounts, "cgroup", "/sys/fs/cgroup", "cgroup", []string{"ro"}, []string{"rw"})
} else {
checkMount(t, spec.Mounts, "cgroup", "/sys/fs/cgroup", "cgroup", []string{"rw"}, []string{"ro"})
}
}
}
func TestMountPropagation(t *testing.T) {
sharedLookupMountFn := func(string) (mount.Info, error) {
return mount.Info{
Mountpoint: "host-path",
Optional: "shared:",
}, nil
}
slaveLookupMountFn := func(string) (mount.Info, error) {
return mount.Info{
Mountpoint: "host-path",
Optional: "master:",
}, nil
}
othersLookupMountFn := func(string) (mount.Info, error) {
return mount.Info{
Mountpoint: "host-path",
Optional: "others",
}, nil
}
for desc, test := range map[string]struct {
criMount *runtime.Mount
fakeLookupMountFn func(string) (mount.Info, error)
optionsCheck []string
expectErr bool
}{
"HostPath should mount as 'rprivate' if propagation is MountPropagation_PROPAGATION_PRIVATE": {
criMount: &runtime.Mount{
ContainerPath: "container-path",
HostPath: "host-path",
Propagation: runtime.MountPropagation_PROPAGATION_PRIVATE,
},
fakeLookupMountFn: nil,
optionsCheck: []string{"rbind", "rprivate"},
expectErr: false,
},
"HostPath should mount as 'rslave' if propagation is MountPropagation_PROPAGATION_HOST_TO_CONTAINER": {
criMount: &runtime.Mount{
ContainerPath: "container-path",
HostPath: "host-path",
Propagation: runtime.MountPropagation_PROPAGATION_HOST_TO_CONTAINER,
},
fakeLookupMountFn: slaveLookupMountFn,
optionsCheck: []string{"rbind", "rslave"},
expectErr: false,
},
"HostPath should mount as 'rshared' if propagation is MountPropagation_PROPAGATION_BIDIRECTIONAL": {
criMount: &runtime.Mount{
ContainerPath: "container-path",
HostPath: "host-path",
Propagation: runtime.MountPropagation_PROPAGATION_BIDIRECTIONAL,
},
fakeLookupMountFn: sharedLookupMountFn,
optionsCheck: []string{"rbind", "rshared"},
expectErr: false,
},
"HostPath should mount as 'rprivate' if propagation is illegal": {
criMount: &runtime.Mount{
ContainerPath: "container-path",
HostPath: "host-path",
Propagation: runtime.MountPropagation(42),
},
fakeLookupMountFn: nil,
optionsCheck: []string{"rbind", "rprivate"},
expectErr: false,
},
"Expect an error if HostPath isn't shared and mount propagation is MountPropagation_PROPAGATION_BIDIRECTIONAL": {
criMount: &runtime.Mount{
ContainerPath: "container-path",
HostPath: "host-path",
Propagation: runtime.MountPropagation_PROPAGATION_BIDIRECTIONAL,
},
fakeLookupMountFn: slaveLookupMountFn,
expectErr: true,
},
"Expect an error if HostPath isn't slave or shared and mount propagation is MountPropagation_PROPAGATION_HOST_TO_CONTAINER": {
criMount: &runtime.Mount{
ContainerPath: "container-path",
HostPath: "host-path",
Propagation: runtime.MountPropagation_PROPAGATION_HOST_TO_CONTAINER,
},
fakeLookupMountFn: othersLookupMountFn,
expectErr: true,
},
} {
t.Logf("TestCase %q", desc)
c := newTestCRIService()
c.os.(*ostesting.FakeOS).LookupMountFn = test.fakeLookupMountFn
config, _, _, _ := getCreateContainerTestData()
var spec runtimespec.Spec
spec.Linux = &runtimespec.Linux{}
err := opts.WithMounts(c.os, config, []*runtime.Mount{test.criMount}, "")(context.Background(), nil, nil, &spec)
if test.expectErr {
require.Error(t, err)
} else {
require.NoError(t, err)
checkMount(t, spec.Mounts, test.criMount.HostPath, test.criMount.ContainerPath, "bind", test.optionsCheck, nil)
}
}
}
func TestPidNamespace(t *testing.T) {
testID := "test-id"
testPid := uint32(1234)
testSandboxID := "sandbox-id"
testContainerName := "container-name"
containerConfig, sandboxConfig, imageConfig, _ := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
for desc, test := range map[string]struct {
pidNS runtime.NamespaceMode
expected runtimespec.LinuxNamespace
}{
"node namespace mode": {
pidNS: runtime.NamespaceMode_NODE,
expected: runtimespec.LinuxNamespace{
Type: runtimespec.PIDNamespace,
Path: opts.GetPIDNamespace(testPid),
},
},
"container namespace mode": {
pidNS: runtime.NamespaceMode_CONTAINER,
expected: runtimespec.LinuxNamespace{
Type: runtimespec.PIDNamespace,
},
},
"pod namespace mode": {
pidNS: runtime.NamespaceMode_POD,
expected: runtimespec.LinuxNamespace{
Type: runtimespec.PIDNamespace,
Path: opts.GetPIDNamespace(testPid),
},
},
} {
t.Logf("TestCase %q", desc)
containerConfig.Linux.SecurityContext.NamespaceOptions = &runtime.NamespaceOption{Pid: test.pidNS}
spec, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
require.NoError(t, err)
assert.Contains(t, spec.Linux.Namespaces, test.expected)
}
}
func TestNoDefaultRunMount(t *testing.T) {
testID := "test-id"
testPid := uint32(1234)
testSandboxID := "sandbox-id"
testContainerName := "container-name"
containerConfig, sandboxConfig, imageConfig, _ := getCreateContainerTestData()
ociRuntime := config.Runtime{}
c := newTestCRIService()
spec, err := c.containerSpec(testID, testSandboxID, testPid, "", testContainerName, testImageName, containerConfig, sandboxConfig, imageConfig, nil, ociRuntime)
assert.NoError(t, err)
for _, mount := range spec.Mounts {
assert.NotEqual(t, "/run", mount.Destination)
}
}
func TestGenerateSeccompSecurityProfileSpecOpts(t *testing.T) {
for desc, test := range map[string]struct {
profile string
privileged bool
disable bool
specOpts oci.SpecOpts
expectErr bool
defaultProfile string
sp *runtime.SecurityProfile
}{
"should return error if seccomp is specified when seccomp is not supported": {
profile: runtimeDefault,
disable: true,
expectErr: true,
},
"should not return error if seccomp is not specified when seccomp is not supported": {
profile: "",
disable: true,
},
"should not return error if seccomp is unconfined when seccomp is not supported": {
profile: unconfinedProfile,
disable: true,
},
"should not set seccomp when privileged is true": {
profile: seccompDefaultProfile,
privileged: true,
},
"should not set seccomp when seccomp is unconfined": {
profile: unconfinedProfile,
},
"should not set seccomp when seccomp is not specified": {
profile: "",
},
"should set default seccomp when seccomp is runtime/default": {
profile: runtimeDefault,
specOpts: seccomp.WithDefaultProfile(),
},
"should set default seccomp when seccomp is docker/default": {
profile: dockerDefault,
specOpts: seccomp.WithDefaultProfile(),
},
"should set specified profile when local profile is specified": {
profile: profileNamePrefix + "test-profile",
specOpts: seccomp.WithProfile("test-profile"),
},
"should use default profile when seccomp is empty": {
defaultProfile: profileNamePrefix + "test-profile",
specOpts: seccomp.WithProfile("test-profile"),
},
"should fallback to docker/default when seccomp is empty and default is runtime/default": {
defaultProfile: runtimeDefault,
specOpts: seccomp.WithDefaultProfile(),
},
//-----------------------------------------------
// now buckets for the SecurityProfile variants
//-----------------------------------------------
"sp should return error if seccomp is specified when seccomp is not supported": {
disable: true,
expectErr: true,
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_RuntimeDefault,
},
},
"sp should not return error if seccomp is unconfined when seccomp is not supported": {
disable: true,
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_Unconfined,
},
},
"sp should not set seccomp when privileged is true": {
privileged: true,
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_RuntimeDefault,
},
},
"sp should not set seccomp when seccomp is unconfined": {
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_Unconfined,
},
},
"sp should not set seccomp when seccomp is not specified": {},
"sp should set default seccomp when seccomp is runtime/default": {
specOpts: seccomp.WithDefaultProfile(),
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_RuntimeDefault,
},
},
"sp should set specified profile when local profile is specified": {
specOpts: seccomp.WithProfile("test-profile"),
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_Localhost,
LocalhostRef: profileNamePrefix + "test-profile",
},
},
"sp should set specified profile when local profile is specified even without prefix": {
specOpts: seccomp.WithProfile("test-profile"),
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_Localhost,
LocalhostRef: "test-profile",
},
},
"sp should return error if specified profile is invalid": {
expectErr: true,
sp: &runtime.SecurityProfile{
ProfileType: runtime.SecurityProfile_RuntimeDefault,
LocalhostRef: "test-profile",
},
},
} {
t.Run(fmt.Sprintf("TestCase %q", desc), func(t *testing.T) {
cri := &criService{}
cri.config.UnsetSeccompProfile = test.defaultProfile
ssp := test.sp
csp, err := generateSeccompSecurityProfile(
test.profile,
test.defaultProfile)
if err != nil {
if test.expectErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
} else {
if ssp == nil {
ssp = csp
}
specOpts, err := cri.generateSeccompSpecOpts(ssp, test.privileged, !test.disable)
assert.Equal(t,
reflect.ValueOf(test.specOpts).Pointer(),
reflect.ValueOf(specOpts).Pointer())
if test.expectErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
}
})
}
}
func TestGenerateApparmorSpecOpts(t *testing.T) {
for desc, test := range map[string]struct {
profile string
privileged bool
disable bool
specOpts oci.SpecOpts
expectErr bool
sp *runtime.SecurityProfile
}{
"should return error if apparmor is specified when apparmor is not supported": {
profile: runtimeDefault,
disable: true,
expectErr: true,
},
"should not return error if apparmor is not specified when apparmor is not supported": {
profile: "",
disable: true,
},
"should set default apparmor when apparmor is not specified": {
profile: "",
specOpts: apparmor.WithDefaultProfile(appArmorDefaultProfileName),
},
"should not apparmor when apparmor is not specified and privileged is true": {
profile: "",
privileged: true,
},
"should not return error if apparmor is unconfined when apparmor is not supported": {
profile: unconfinedProfile,
disable: true,
},
"should not apparmor when apparmor is unconfined": {
profile: unconfinedProfile,
},
"should not apparmor when apparmor is unconfined and privileged is true": {
profile: unconfinedProfile,
privileged: true,
},
"should set default apparmor when apparmor is runtime/default": {
profile: runtimeDefault,
specOpts: apparmor.WithDefaultProfile(appArmorDefaultProfileName),
},
"should not apparmor when apparmor is default and privileged is true": {
profile: runtimeDefault,
privileged: true,
},
// TODO (mikebrow) add success with existing defined profile tests