be7da5052f
This patch refactors pkg/util/mount to be more usable outside of Kubernetes. This is done by refactoring mount.Interface to only contain methods that are not K8s specific. Methods that are not relevant to basic mount activities but still have OS-specific implementations are now found in a mount.HostUtils interface.
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
|
|
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)
|
|
}
|
|
}
|
|
}
|