mirror of
https://github.com/k3s-io/kubernetes.git
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919 lines
33 KiB
Go
919 lines
33 KiB
Go
// +build linux
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/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package mount
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import (
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"fmt"
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"io/ioutil"
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"net"
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"os"
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"path/filepath"
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"reflect"
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"strings"
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"testing"
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"k8s.io/utils/exec"
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)
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func TestReadProcMountsFrom(t *testing.T) {
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successCase :=
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`/dev/0 /path/to/0 type0 flags 0 0
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/dev/1 /path/to/1 type1 flags 1 1
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/dev/2 /path/to/2 type2 flags,1,2=3 2 2
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`
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// NOTE: readProcMountsFrom has been updated to using fnv.New32a()
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mounts, err := parseProcMounts([]byte(successCase))
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if err != nil {
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t.Errorf("expected success, got %v", err)
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}
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if len(mounts) != 3 {
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t.Fatalf("expected 3 mounts, got %d", len(mounts))
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}
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mp := MountPoint{"/dev/0", "/path/to/0", "type0", []string{"flags"}, 0, 0}
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if !mountPointsEqual(&mounts[0], &mp) {
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t.Errorf("got unexpected MountPoint[0]: %#v", mounts[0])
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}
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mp = MountPoint{"/dev/1", "/path/to/1", "type1", []string{"flags"}, 1, 1}
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if !mountPointsEqual(&mounts[1], &mp) {
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t.Errorf("got unexpected MountPoint[1]: %#v", mounts[1])
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}
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mp = MountPoint{"/dev/2", "/path/to/2", "type2", []string{"flags", "1", "2=3"}, 2, 2}
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if !mountPointsEqual(&mounts[2], &mp) {
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t.Errorf("got unexpected MountPoint[2]: %#v", mounts[2])
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}
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errorCases := []string{
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"/dev/0 /path/to/mount\n",
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"/dev/1 /path/to/mount type flags a 0\n",
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"/dev/2 /path/to/mount type flags 0 b\n",
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}
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for _, ec := range errorCases {
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_, err := parseProcMounts([]byte(ec))
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if err == nil {
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t.Errorf("expected error")
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}
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}
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}
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func mountPointsEqual(a, b *MountPoint) bool {
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if a.Device != b.Device || a.Path != b.Path || a.Type != b.Type || !reflect.DeepEqual(a.Opts, b.Opts) || a.Pass != b.Pass || a.Freq != b.Freq {
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return false
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}
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return true
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}
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func TestGetMountRefs(t *testing.T) {
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fm := &FakeMounter{
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MountPoints: []MountPoint{
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd"},
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2"},
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},
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}
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tests := []struct {
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mountPath string
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expectedRefs []string
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}{
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{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod",
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[]string{
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd",
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},
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},
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{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1",
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[]string{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2",
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2",
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},
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},
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{
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"/var/fake/directory/that/doesnt/exist",
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[]string{},
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},
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}
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for i, test := range tests {
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if refs, err := fm.GetMountRefs(test.mountPath); err != nil || !setEquivalent(test.expectedRefs, refs) {
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t.Errorf("%d. getMountRefs(%q) = %v, %v; expected %v, nil", i, test.mountPath, refs, err, test.expectedRefs)
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}
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}
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}
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func setEquivalent(set1, set2 []string) bool {
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map1 := make(map[string]bool)
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map2 := make(map[string]bool)
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for _, s := range set1 {
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map1[s] = true
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}
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for _, s := range set2 {
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map2[s] = true
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}
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for s := range map1 {
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if !map2[s] {
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return false
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}
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}
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for s := range map2 {
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if !map1[s] {
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return false
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}
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}
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return true
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}
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func TestGetDeviceNameFromMount(t *testing.T) {
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fm := &FakeMounter{
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MountPoints: []MountPoint{
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{Device: "/dev/disk/by-path/prefix-lun-1",
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Path: "/mnt/111"},
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{Device: "/dev/disk/by-path/prefix-lun-1",
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Path: "/mnt/222"},
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},
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}
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tests := []struct {
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mountPath string
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expectedDevice string
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expectedRefs int
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}{
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{
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"/mnt/222",
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"/dev/disk/by-path/prefix-lun-1",
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2,
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},
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}
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for i, test := range tests {
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if device, refs, err := GetDeviceNameFromMount(fm, test.mountPath); err != nil || test.expectedRefs != refs || test.expectedDevice != device {
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t.Errorf("%d. GetDeviceNameFromMount(%s) = (%s, %d), %v; expected (%s,%d), nil", i, test.mountPath, device, refs, err, test.expectedDevice, test.expectedRefs)
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}
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}
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}
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func TestGetMountRefsByDev(t *testing.T) {
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fm := &FakeMounter{
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MountPoints: []MountPoint{
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd"},
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2"},
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},
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}
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tests := []struct {
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mountPath string
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expectedRefs []string
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}{
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{
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd",
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[]string{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod",
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},
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},
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{
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2",
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[]string{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1",
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2",
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},
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},
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}
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for i, test := range tests {
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if refs, err := getMountRefsByDev(fm, test.mountPath); err != nil || !setEquivalent(test.expectedRefs, refs) {
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t.Errorf("%d. getMountRefsByDev(%q) = %v, %v; expected %v, nil", i, test.mountPath, refs, err, test.expectedRefs)
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}
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}
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}
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func writeFile(content string) (string, string, error) {
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tempDir, err := ioutil.TempDir("", "mounter_shared_test")
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if err != nil {
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return "", "", err
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}
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filename := filepath.Join(tempDir, "mountinfo")
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err = ioutil.WriteFile(filename, []byte(content), 0600)
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if err != nil {
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os.RemoveAll(tempDir)
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return "", "", err
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}
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return tempDir, filename, nil
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}
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func TestIsSharedSuccess(t *testing.T) {
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successMountInfo :=
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`62 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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76 62 8:1 / /boot rw,relatime shared:29 - ext4 /dev/sda1 rw,seclabel,data=ordered
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78 62 0:41 / /tmp rw,nosuid,nodev shared:30 - tmpfs tmpfs rw,seclabel
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80 62 0:42 / /var/lib/nfs/rpc_pipefs rw,relatime shared:31 - rpc_pipefs sunrpc rw
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82 62 0:43 / /var/lib/foo rw,relatime shared:32 - tmpfs tmpfs rw
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83 63 0:44 / /var/lib/bar rw,relatime - tmpfs tmpfs rw
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227 62 253:0 /var/lib/docker/devicemapper /var/lib/docker/devicemapper rw,relatime - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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224 62 253:0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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`
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tempDir, filename, err := writeFile(successMountInfo)
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if err != nil {
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t.Fatalf("cannot create temporary file: %v", err)
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}
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defer os.RemoveAll(tempDir)
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tests := []struct {
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name string
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path string
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expectedResult bool
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}{
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{
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// /var/lib/kubelet is a directory on mount '/' that is shared
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// This is the most common case.
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"shared",
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"/var/lib/kubelet",
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true,
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},
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{
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// 8a2a... is a directory on mount /var/lib/docker/devicemapper
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// that is private.
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"private",
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"/var/lib/docker/devicemapper/mnt/8a2a5c19eefb06d6f851dfcb240f8c113427f5b49b19658b5c60168e88267693/",
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false,
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},
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{
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// 'directory' is a directory on mount
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// /var/lib/docker/devicemapper/test/shared that is shared, but one
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// of its parent is private.
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"nested-shared",
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"/var/lib/docker/devicemapper/test/shared/my/test/directory",
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true,
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},
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{
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// /var/lib/foo is a mount point and it's shared
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"shared-mount",
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"/var/lib/foo",
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true,
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},
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{
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// /var/lib/bar is a mount point and it's private
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"private-mount",
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"/var/lib/bar",
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false,
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},
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}
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for _, test := range tests {
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ret, err := isShared(test.path, filename)
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if err != nil {
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t.Errorf("test %s got unexpected error: %v", test.name, err)
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}
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if ret != test.expectedResult {
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t.Errorf("test %s expected %v, got %v", test.name, test.expectedResult, ret)
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}
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}
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}
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func TestIsSharedFailure(t *testing.T) {
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errorTests := []struct {
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name string
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content string
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}{
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{
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// the first line is too short
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name: "too-short-line",
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content: `62 0 253:0 / / rw,relatime
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76 62 8:1 / /boot rw,relatime shared:29 - ext4 /dev/sda1 rw,seclabel,data=ordered
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78 62 0:41 / /tmp rw,nosuid,nodev shared:30 - tmpfs tmpfs rw,seclabel
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80 62 0:42 / /var/lib/nfs/rpc_pipefs rw,relatime shared:31 - rpc_pipefs sunrpc rw
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227 62 253:0 /var/lib/docker/devicemapper /var/lib/docker/devicemapper rw,relatime - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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224 62 253:0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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`,
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},
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{
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// there is no root mount
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name: "no-root-mount",
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content: `76 62 8:1 / /boot rw,relatime shared:29 - ext4 /dev/sda1 rw,seclabel,data=ordered
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78 62 0:41 / /tmp rw,nosuid,nodev shared:30 - tmpfs tmpfs rw,seclabel
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80 62 0:42 / /var/lib/nfs/rpc_pipefs rw,relatime shared:31 - rpc_pipefs sunrpc rw
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227 62 253:0 /var/lib/docker/devicemapper /var/lib/docker/devicemapper rw,relatime - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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224 62 253:0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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`,
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},
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}
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for _, test := range errorTests {
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tempDir, filename, err := writeFile(test.content)
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if err != nil {
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t.Fatalf("cannot create temporary file: %v", err)
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}
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defer os.RemoveAll(tempDir)
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_, err = isShared("/", filename)
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if err == nil {
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t.Errorf("test %q: expected error, got none", test.name)
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}
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}
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}
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func TestPathWithinBase(t *testing.T) {
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tests := []struct {
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name string
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fullPath string
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basePath string
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expected bool
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}{
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{
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name: "good subpath",
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fullPath: "/a/b/c",
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basePath: "/a",
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expected: true,
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},
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{
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name: "good subpath 2",
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fullPath: "/a/b/c",
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basePath: "/a/b",
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expected: true,
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},
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{
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name: "good subpath end slash",
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fullPath: "/a/b/c/",
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basePath: "/a/b",
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expected: true,
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},
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{
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name: "good subpath backticks",
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fullPath: "/a/b/../c",
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basePath: "/a",
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expected: true,
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},
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{
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name: "good subpath equal",
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fullPath: "/a/b/c",
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basePath: "/a/b/c",
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expected: true,
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},
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{
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name: "good subpath equal 2",
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fullPath: "/a/b/c/",
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basePath: "/a/b/c",
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expected: true,
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},
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{
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name: "good subpath root",
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fullPath: "/a",
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basePath: "/",
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expected: true,
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},
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{
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name: "bad subpath parent",
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fullPath: "/a/b/c",
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basePath: "/a/b/c/d",
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expected: false,
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},
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{
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name: "bad subpath outside",
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fullPath: "/b/c",
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basePath: "/a/b/c",
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expected: false,
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},
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{
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name: "bad subpath prefix",
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fullPath: "/a/b/cd",
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basePath: "/a/b/c",
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expected: false,
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},
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{
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name: "bad subpath backticks",
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fullPath: "/a/../b",
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basePath: "/a",
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expected: false,
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},
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{
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name: "configmap subpath",
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fullPath: "/var/lib/kubelet/pods/uuid/volumes/kubernetes.io~configmap/config/..timestamp/file.txt",
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basePath: "/var/lib/kubelet/pods/uuid/volumes/kubernetes.io~configmap/config",
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expected: true,
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},
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}
|
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for _, test := range tests {
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if PathWithinBase(test.fullPath, test.basePath) != test.expected {
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t.Errorf("test %q failed: expected %v", test.name, test.expected)
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}
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}
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}
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|
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func TestParseMountInfo(t *testing.T) {
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info :=
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|
`62 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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78 62 0:41 / /tmp rw,nosuid,nodev shared:30 - tmpfs tmpfs rw,seclabel
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80 62 0:42 / /var/lib/nfs/rpc_pipefs rw,relatime shared:31 - rpc_pipefs sunrpc rw
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82 62 0:43 / /var/lib/foo rw,relatime shared:32 - tmpfs tmpfs rw
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83 63 0:44 / /var/lib/bar rw,relatime - tmpfs tmpfs rw
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227 62 253:0 /var/lib/docker/devicemapper /var/lib/docker/devicemapper rw,relatime - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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224 62 253:0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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76 17 8:1 / /mnt/stateful_partition rw,nosuid,nodev,noexec,relatime - ext4 /dev/sda1 rw,commit=30,data=ordered
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80 17 8:1 /var /var rw,nosuid,nodev,noexec,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
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189 80 8:1 /var/lib/kubelet /var/lib/kubelet rw,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
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818 77 8:40 / /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdc rw,data=ordered
|
|
819 78 8:48 / /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
|
|
900 100 8:48 /dir1 /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volume-subpaths/vol1/subpath1/0 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
|
|
901 101 8:1 /dir1 /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volume-subpaths/vol1/subpath1/1 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
|
|
902 102 8:1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volumes/kubernetes.io~empty-dir/vol1/dir1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volume-subpaths/vol1/subpath1/0 rw,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
|
|
903 103 8:1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volumes/kubernetes.io~empty-dir/vol2/dir1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volume-subpaths/vol1/subpath1/1 rw,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
|
|
178 25 253:0 /etc/bar /var/lib/kubelet/pods/12345/volume-subpaths/vol1/subpath1/0 rw,relatime shared:1 - ext4 /dev/sdb2 rw,errors=remount-ro,data=ordered
|
|
698 186 0:41 /tmp1/dir1 /var/lib/kubelet/pods/41135147-e697-11e7-9342-42010a800002/volume-subpaths/vol1/subpath1/0 rw shared:26 - tmpfs tmpfs rw
|
|
918 77 8:50 / /var/lib/kubelet/pods/2345/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdc rw,data=ordered
|
|
919 78 8:58 / /var/lib/kubelet/pods/2345/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
|
|
920 100 8:50 /dir1 /var/lib/kubelet/pods/2345/volume-subpaths/vol1/subpath1/0 rw,relatime shared:290 - ext4 /dev/sdc rw,data=ordered
|
|
150 23 1:58 / /media/nfs_vol rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
|
|
151 24 1:58 / /media/nfs_bindmount rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs/foo rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
|
|
134 23 0:58 / /var/lib/kubelet/pods/43219158-e5e1-11e7-a392-0e858b8eaf40/volumes/kubernetes.io~nfs/nfs1 rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
|
|
187 23 0:58 / /var/lib/kubelet/pods/1fc5ea21-eff4-11e7-ac80-0e858b8eaf40/volumes/kubernetes.io~nfs/nfs2 rw,relatime shared:96 - nfs4 172.18.4.223:/srv/nfs2 rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
|
|
188 24 0:58 / /var/lib/kubelet/pods/43219158-e5e1-11e7-a392-0e858b8eaf40/volume-subpaths/nfs1/subpath1/0 rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs/foo rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
|
|
347 60 0:71 / /var/lib/kubelet/pods/13195d46-f9fa-11e7-bbf1-5254007a695a/volumes/kubernetes.io~nfs/vol2 rw,relatime shared:170 - nfs 172.17.0.3:/exports/2 rw,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.17.0.3,mountvers=3,mountport=20048,mountproto=udp,local_lock=none,addr=172.17.0.3
|
|
222 24 253:0 /tmp/src /mnt/dst rw,relatime shared:1 - ext4 /dev/mapper/vagrant--vg-root rw,errors=remount-ro,data=ordered
|
|
28 18 0:24 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755
|
|
29 28 0:25 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:10 - cgroup cgroup rw,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
|
|
31 28 0:27 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,cpuset
|
|
32 28 0:28 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,cpu,cpuacct
|
|
33 28 0:29 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,freezer
|
|
34 28 0:30 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,net_cls,net_prio
|
|
35 28 0:31 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,pids
|
|
36 28 0:32 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,devices
|
|
37 28 0:33 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,hugetlb
|
|
38 28 0:34 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,blkio
|
|
39 28 0:35 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,memory
|
|
40 28 0:36 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:22 - cgroup cgroup rw,perf_event
|
|
`
|
|
tempDir, filename, err := writeFile(info)
|
|
if err != nil {
|
|
t.Fatalf("cannot create temporary file: %v", err)
|
|
}
|
|
defer os.RemoveAll(tempDir)
|
|
|
|
tests := []struct {
|
|
name string
|
|
id int
|
|
expectedInfo mountInfo
|
|
}{
|
|
{
|
|
"simple bind mount",
|
|
189,
|
|
mountInfo{
|
|
id: 189,
|
|
parentID: 80,
|
|
majorMinor: "8:1",
|
|
root: "/var/lib/kubelet",
|
|
source: "/dev/sda1",
|
|
mountPoint: "/var/lib/kubelet",
|
|
optionalFields: []string{"shared:30"},
|
|
fsType: "ext4",
|
|
mountOptions: []string{"rw", "relatime"},
|
|
superOptions: []string{"rw", "commit=30", "data=ordered"},
|
|
},
|
|
},
|
|
{
|
|
"bind mount a directory",
|
|
222,
|
|
mountInfo{
|
|
id: 222,
|
|
parentID: 24,
|
|
majorMinor: "253:0",
|
|
root: "/tmp/src",
|
|
source: "/dev/mapper/vagrant--vg-root",
|
|
mountPoint: "/mnt/dst",
|
|
optionalFields: []string{"shared:1"},
|
|
fsType: "ext4",
|
|
mountOptions: []string{"rw", "relatime"},
|
|
superOptions: []string{"rw", "errors=remount-ro", "data=ordered"},
|
|
},
|
|
},
|
|
{
|
|
"more than one optional fields",
|
|
224,
|
|
mountInfo{
|
|
id: 224,
|
|
parentID: 62,
|
|
majorMinor: "253:0",
|
|
root: "/var/lib/docker/devicemapper/test/shared",
|
|
source: "/dev/mapper/ssd-root",
|
|
mountPoint: "/var/lib/docker/devicemapper/test/shared",
|
|
optionalFields: []string{"master:1", "shared:44"},
|
|
fsType: "ext4",
|
|
mountOptions: []string{"rw", "relatime"},
|
|
superOptions: []string{"rw", "seclabel", "data=ordered"},
|
|
},
|
|
},
|
|
{
|
|
"cgroup-mountpoint",
|
|
28,
|
|
mountInfo{
|
|
id: 28,
|
|
parentID: 18,
|
|
majorMinor: "0:24",
|
|
root: "/",
|
|
source: "tmpfs",
|
|
mountPoint: "/sys/fs/cgroup",
|
|
optionalFields: []string{"shared:9"},
|
|
fsType: "tmpfs",
|
|
mountOptions: []string{"ro", "nosuid", "nodev", "noexec"},
|
|
superOptions: []string{"ro", "mode=755"},
|
|
},
|
|
},
|
|
{
|
|
"cgroup-subsystem-systemd-mountpoint",
|
|
29,
|
|
mountInfo{
|
|
id: 29,
|
|
parentID: 28,
|
|
majorMinor: "0:25",
|
|
root: "/",
|
|
source: "cgroup",
|
|
mountPoint: "/sys/fs/cgroup/systemd",
|
|
optionalFields: []string{"shared:10"},
|
|
fsType: "cgroup",
|
|
mountOptions: []string{"rw", "nosuid", "nodev", "noexec", "relatime"},
|
|
superOptions: []string{"rw", "xattr", "release_agent=/lib/systemd/systemd-cgroups-agent", "name=systemd"},
|
|
},
|
|
},
|
|
{
|
|
"cgroup-subsystem-cpuset-mountpoint",
|
|
31,
|
|
mountInfo{
|
|
id: 31,
|
|
parentID: 28,
|
|
majorMinor: "0:27",
|
|
root: "/",
|
|
source: "cgroup",
|
|
mountPoint: "/sys/fs/cgroup/cpuset",
|
|
optionalFields: []string{"shared:13"},
|
|
fsType: "cgroup",
|
|
mountOptions: []string{"rw", "nosuid", "nodev", "noexec", "relatime"},
|
|
superOptions: []string{"rw", "cpuset"},
|
|
},
|
|
},
|
|
}
|
|
|
|
infos, err := parseMountInfo(filename)
|
|
if err != nil {
|
|
t.Fatalf("Cannot parse %s: %s", filename, err)
|
|
}
|
|
|
|
for _, test := range tests {
|
|
found := false
|
|
for _, info := range infos {
|
|
if info.id == test.id {
|
|
found = true
|
|
if !reflect.DeepEqual(info, test.expectedInfo) {
|
|
t.Errorf("Test case %q:\n expected: %+v\n got: %+v", test.name, test.expectedInfo, info)
|
|
}
|
|
break
|
|
}
|
|
}
|
|
if !found {
|
|
t.Errorf("Test case %q: mountPoint %d not found", test.name, test.id)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestGetSELinuxSupport(t *testing.T) {
|
|
info :=
|
|
`62 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
|
|
78 62 0:41 / /tmp rw,nosuid,nodev shared:30 - tmpfs tmpfs rw,seclabel
|
|
83 63 0:44 / /var/lib/bar rw,relatime - tmpfs tmpfs rw
|
|
227 62 253:0 /var/lib/docker/devicemapper /var/lib/docker/devicemapper rw,relatime - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
|
|
150 23 1:58 / /media/nfs_vol rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
|
|
`
|
|
tempDir, filename, err := writeFile(info)
|
|
if err != nil {
|
|
t.Fatalf("cannot create temporary file: %v", err)
|
|
}
|
|
defer os.RemoveAll(tempDir)
|
|
|
|
tests := []struct {
|
|
name string
|
|
mountPoint string
|
|
expectedResult bool
|
|
}{
|
|
{
|
|
"ext4 on /",
|
|
"/",
|
|
true,
|
|
},
|
|
{
|
|
"tmpfs on /var/lib/bar",
|
|
"/var/lib/bar",
|
|
false,
|
|
},
|
|
{
|
|
"nfsv4",
|
|
"/media/nfs_vol",
|
|
false,
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
out, err := GetSELinux(test.mountPoint, filename)
|
|
if err != nil {
|
|
t.Errorf("Test %s failed with error: %s", test.name, err)
|
|
}
|
|
if test.expectedResult != out {
|
|
t.Errorf("Test %s failed: expected %v, got %v", test.name, test.expectedResult, out)
|
|
}
|
|
}
|
|
}
|
|
|
|
func createSocketFile(socketDir string) (string, error) {
|
|
testSocketFile := filepath.Join(socketDir, "mt.sock")
|
|
|
|
// Switch to volume path and create the socket file
|
|
// socket file can not have length of more than 108 character
|
|
// and hence we must use relative path
|
|
oldDir, _ := os.Getwd()
|
|
|
|
err := os.Chdir(socketDir)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer func() {
|
|
os.Chdir(oldDir)
|
|
}()
|
|
_, socketCreateError := net.Listen("unix", "mt.sock")
|
|
return testSocketFile, socketCreateError
|
|
}
|
|
|
|
func TestGetFileType(t *testing.T) {
|
|
hu := NewHostUtil()
|
|
|
|
testCase := []struct {
|
|
name string
|
|
expectedType FileType
|
|
setUp func() (string, string, error)
|
|
}{
|
|
{
|
|
"Directory Test",
|
|
FileTypeDirectory,
|
|
func() (string, string, error) {
|
|
tempDir, err := ioutil.TempDir("", "test-get-filetype-")
|
|
return tempDir, tempDir, err
|
|
},
|
|
},
|
|
{
|
|
"File Test",
|
|
FileTypeFile,
|
|
func() (string, string, error) {
|
|
tempFile, err := ioutil.TempFile("", "test-get-filetype")
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
tempFile.Close()
|
|
return tempFile.Name(), tempFile.Name(), nil
|
|
},
|
|
},
|
|
{
|
|
"Socket Test",
|
|
FileTypeSocket,
|
|
func() (string, string, error) {
|
|
tempDir, err := ioutil.TempDir("", "test-get-filetype-")
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
tempSocketFile, err := createSocketFile(tempDir)
|
|
return tempSocketFile, tempDir, err
|
|
},
|
|
},
|
|
{
|
|
"Block Device Test",
|
|
FileTypeBlockDev,
|
|
func() (string, string, error) {
|
|
tempDir, err := ioutil.TempDir("", "test-get-filetype-")
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
|
|
tempBlockFile := filepath.Join(tempDir, "test_blk_dev")
|
|
outputBytes, err := exec.New().Command("mknod", tempBlockFile, "b", "89", "1").CombinedOutput()
|
|
if err != nil {
|
|
err = fmt.Errorf("%v: %s ", err, outputBytes)
|
|
}
|
|
return tempBlockFile, tempDir, err
|
|
},
|
|
},
|
|
{
|
|
"Character Device Test",
|
|
FileTypeCharDev,
|
|
func() (string, string, error) {
|
|
tempDir, err := ioutil.TempDir("", "test-get-filetype-")
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
|
|
tempCharFile := filepath.Join(tempDir, "test_char_dev")
|
|
outputBytes, err := exec.New().Command("mknod", tempCharFile, "c", "89", "1").CombinedOutput()
|
|
if err != nil {
|
|
err = fmt.Errorf("%v: %s ", err, outputBytes)
|
|
}
|
|
return tempCharFile, tempDir, err
|
|
},
|
|
},
|
|
}
|
|
|
|
for idx, tc := range testCase {
|
|
path, cleanUpPath, err := tc.setUp()
|
|
if err != nil {
|
|
// Locally passed, but upstream CI is not friendly to create such device files
|
|
// Leave "Operation not permitted" out, which can be covered in an e2e test
|
|
if isOperationNotPermittedError(err) {
|
|
continue
|
|
}
|
|
t.Fatalf("[%d-%s] unexpected error : %v", idx, tc.name, err)
|
|
}
|
|
if len(cleanUpPath) > 0 {
|
|
defer os.RemoveAll(cleanUpPath)
|
|
}
|
|
|
|
fileType, err := hu.GetFileType(path)
|
|
if err != nil {
|
|
t.Fatalf("[%d-%s] unexpected error : %v", idx, tc.name, err)
|
|
}
|
|
if fileType != tc.expectedType {
|
|
t.Fatalf("[%d-%s] expected %s, but got %s", idx, tc.name, tc.expectedType, fileType)
|
|
}
|
|
}
|
|
}
|
|
|
|
func isOperationNotPermittedError(err error) bool {
|
|
if strings.Contains(err.Error(), "Operation not permitted") {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
func TestSearchMountPoints(t *testing.T) {
|
|
base := `
|
|
19 25 0:18 / /sys rw,nosuid,nodev,noexec,relatime shared:7 - sysfs sysfs rw
|
|
20 25 0:4 / /proc rw,nosuid,nodev,noexec,relatime shared:12 - proc proc rw
|
|
21 25 0:6 / /dev rw,nosuid,relatime shared:2 - devtmpfs udev rw,size=4058156k,nr_inodes=1014539,mode=755
|
|
22 21 0:14 / /dev/pts rw,nosuid,noexec,relatime shared:3 - devpts devpts rw,gid=5,mode=620,ptmxmode=000
|
|
23 25 0:19 / /run rw,nosuid,noexec,relatime shared:5 - tmpfs tmpfs rw,size=815692k,mode=755
|
|
25 0 252:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
|
26 19 0:12 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw
|
|
27 21 0:21 / /dev/shm rw,nosuid,nodev shared:4 - tmpfs tmpfs rw
|
|
28 23 0:22 / /run/lock rw,nosuid,nodev,noexec,relatime shared:6 - tmpfs tmpfs rw,size=5120k
|
|
29 19 0:23 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755
|
|
30 29 0:24 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:10 - cgroup cgroup rw,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
|
|
31 19 0:25 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:11 - pstore pstore rw
|
|
32 29 0:26 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,devices
|
|
33 29 0:27 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,freezer
|
|
34 29 0:28 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,pids
|
|
35 29 0:29 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,blkio
|
|
36 29 0:30 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,memory
|
|
37 29 0:31 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,perf_event
|
|
38 29 0:32 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,hugetlb
|
|
39 29 0:33 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,cpu,cpuacct
|
|
40 29 0:34 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,cpuset
|
|
41 29 0:35 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:22 - cgroup cgroup rw,net_cls,net_prio
|
|
58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordere
|
|
`
|
|
|
|
testcases := []struct {
|
|
name string
|
|
source string
|
|
mountInfos string
|
|
expectedRefs []string
|
|
expectedErr error
|
|
}{
|
|
{
|
|
"dir",
|
|
"/mnt/disks/vol1",
|
|
base,
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"dir-used",
|
|
"/mnt/disks/vol1",
|
|
base + `
|
|
56 25 252:0 /mnt/disks/vol1 /var/lib/kubelet/pods/1890aef5-5a60-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
|
57 25 0:45 / /mnt/disks/vol rw,relatime shared:36 - tmpfs tmpfs rw
|
|
`,
|
|
[]string{"/var/lib/kubelet/pods/1890aef5-5a60-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
|
|
nil,
|
|
},
|
|
{
|
|
"tmpfs-vol",
|
|
"/mnt/disks/vol1",
|
|
base + `120 25 0:76 / /mnt/disks/vol1 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
|
`,
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"tmpfs-vol-used-by-two-pods",
|
|
"/mnt/disks/vol1",
|
|
base + `120 25 0:76 / /mnt/disks/vol1 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
|
196 25 0:76 / /var/lib/kubelet/pods/ade3ac21-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
|
228 25 0:76 / /var/lib/kubelet/pods/ac60532d-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
|
`,
|
|
[]string{
|
|
"/var/lib/kubelet/pods/ade3ac21-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585",
|
|
"/var/lib/kubelet/pods/ac60532d-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585",
|
|
},
|
|
nil,
|
|
},
|
|
{
|
|
"tmpfs-subdir-used-indirectly-via-bindmount-dir-by-one-pod",
|
|
"/mnt/vol1/foo",
|
|
base + `177 25 0:46 / /mnt/data rw,relatime shared:37 - tmpfs data rw
|
|
190 25 0:46 /vol1 /mnt/vol1 rw,relatime shared:37 - tmpfs data rw
|
|
191 25 0:46 /vol2 /mnt/vol2 rw,relatime shared:37 - tmpfs data rw
|
|
62 25 0:46 /vol1/foo /var/lib/kubelet/pods/e25f2f01-5b06-11e8-8694-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:37 - tmpfs data rw
|
|
`,
|
|
[]string{"/var/lib/kubelet/pods/e25f2f01-5b06-11e8-8694-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
|
|
nil,
|
|
},
|
|
{
|
|
"dir-bindmounted",
|
|
"/mnt/disks/vol2",
|
|
base + `342 25 252:0 /mnt/disks/vol2 /mnt/disks/vol2 rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
|
`,
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"dir-bindmounted-used-by-one-pod",
|
|
"/mnt/disks/vol2",
|
|
base + `342 25 252:0 /mnt/disks/vol2 /mnt/disks/vol2 rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
|
77 25 252:0 /mnt/disks/vol2 /var/lib/kubelet/pods/f30dc360-5a5d-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-1fb30a1c rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
|
`,
|
|
[]string{"/var/lib/kubelet/pods/f30dc360-5a5d-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-1fb30a1c"},
|
|
nil,
|
|
},
|
|
{
|
|
"blockfs",
|
|
"/mnt/disks/blkvol1",
|
|
base + `58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
|
`,
|
|
nil,
|
|
nil,
|
|
},
|
|
{
|
|
"blockfs-used-by-one-pod",
|
|
"/mnt/disks/blkvol1",
|
|
base + `58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
|
62 25 7:1 / /var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
|
`,
|
|
[]string{"/var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
|
|
nil,
|
|
},
|
|
{
|
|
"blockfs-used-by-two-pods",
|
|
"/mnt/disks/blkvol1",
|
|
base + `58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
|
62 25 7:1 / /var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
|
95 25 7:1 / /var/lib/kubelet/pods/4854a48b-5a64-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
|
`,
|
|
[]string{"/var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test",
|
|
"/var/lib/kubelet/pods/4854a48b-5a64-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
|
|
nil,
|
|
},
|
|
}
|
|
tmpFile, err := ioutil.TempFile("", "test-get-filetype")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.Remove(tmpFile.Name())
|
|
defer tmpFile.Close()
|
|
for _, v := range testcases {
|
|
tmpFile.Truncate(0)
|
|
tmpFile.Seek(0, 0)
|
|
tmpFile.WriteString(v.mountInfos)
|
|
tmpFile.Sync()
|
|
refs, err := SearchMountPoints(v.source, tmpFile.Name())
|
|
if !reflect.DeepEqual(refs, v.expectedRefs) {
|
|
t.Errorf("test %q: expected Refs: %#v, got %#v", v.name, v.expectedRefs, refs)
|
|
}
|
|
if !reflect.DeepEqual(err, v.expectedErr) {
|
|
t.Errorf("test %q: expected err: %v, got %v", v.name, v.expectedErr, err)
|
|
}
|
|
}
|
|
}
|