rebase: bump k8s.io/kubernetes from 1.22.3 to 1.22.4

Bumps [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes) from 1.22.3 to 1.22.4.
- [Release notes](https://github.com/kubernetes/kubernetes/releases)
- [Commits](https://github.com/kubernetes/kubernetes/compare/v1.22.3...v1.22.4)

---
updated-dependencies:
- dependency-name: k8s.io/kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/k8s.io/kubernetes/pkg/util/selinux/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package selinux contains wrapper functions for the libcontainer SELinux
+// package.  A NOP implementation is provided for non-linux platforms.
+package selinux // import "k8s.io/kubernetes/pkg/util/selinux"

vendor/k8s.io/kubernetes/pkg/util/selinux/selinux.go

@@ -0,0 +1,39 @@
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package selinux
+
+// Note: the libcontainer SELinux package is only built for Linux, so it is
+// necessary to have a NOP wrapper which is built for non-Linux platforms to
+// allow code that links to this package not to differentiate its own methods
+// for Linux and non-Linux platforms.
+//
+// SELinuxRunner wraps certain libcontainer SELinux calls. For more
+// information, see:
+//
+// https://github.com/opencontainers/runc/blob/master/libcontainer/selinux/selinux.go
+type SELinuxRunner interface {
+	// Getfilecon returns the SELinux context for the given path or returns an
+	// error.
+	Getfilecon(path string) (string, error)
+}
+
+// NewSELinuxRunner returns a new SELinuxRunner appropriate for the platform.
+// On Linux, all methods short-circuit and return NOP values if SELinux is
+// disabled. On non-Linux platforms, a NOP implementation is returned.
+func NewSELinuxRunner() SELinuxRunner {
+	return &realSELinuxRunner{}
+}

vendor/k8s.io/kubernetes/pkg/util/selinux/selinux_linux.go

@@ -0,0 +1,57 @@
+// +build linux
+
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package selinux
+
+import (
+	selinux "github.com/opencontainers/selinux/go-selinux"
+)
+
+// SELinuxEnabled returns whether SELinux is enabled on the system.  SELinux
+// has a tri-state:
+//
+// 1.  disabled: SELinux Kernel modules not loaded, SELinux policy is not
+//     checked during Kernel MAC checks
+// 2.  enforcing: Enabled; SELinux policy violations are denied and logged
+//     in the audit log
+// 3.  permissive: Enabled, but SELinux policy violations are permitted and
+//     logged in the audit log
+//
+// SELinuxEnabled returns true if SELinux is enforcing or permissive, and
+// false if it is disabled.
+func SELinuxEnabled() bool {
+	return selinux.GetEnabled()
+}
+
+// realSELinuxRunner is the real implementation of SELinuxRunner interface for
+// Linux.
+type realSELinuxRunner struct{}
+
+var _ SELinuxRunner = &realSELinuxRunner{}
+
+func (_ *realSELinuxRunner) Getfilecon(path string) (string, error) {
+	if !SELinuxEnabled() {
+		return "", nil
+	}
+	return selinux.FileLabel(path)
+}
+
+// SetFileLabel applies the SELinux label on the path or returns an error.
+func SetFileLabel(path string, label string) error {
+	return selinux.SetFileLabel(path, label)
+}

vendor/k8s.io/kubernetes/pkg/util/selinux/selinux_unsupported.go

@@ -0,0 +1,38 @@
+// +build !linux
+
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package selinux
+
+// SELinuxEnabled always returns false on non-linux platforms.
+func SELinuxEnabled() bool {
+	return false
+}
+
+// realSELinuxRunner is the NOP implementation of the SELinuxRunner interface.
+type realSELinuxRunner struct{}
+
+var _ SELinuxRunner = &realSELinuxRunner{}
+
+func (_ *realSELinuxRunner) Getfilecon(path string) (string, error) {
+	return "", nil
+}
+
+// FileLabel returns the SELinux label for this path or returns an error.
+func SetFileLabel(path string, label string) error {
+	return nil
+}

vendor/k8s.io/kubernetes/pkg/volume/util/hostutil/fake_hostutil.go

@@ -108,7 +108,7 @@ func (hu *FakeHostUtil) GetOwner(pathname string) (int64, int64, error) {
 // GetSELinuxSupport tests if pathname is on a mount that supports SELinux.
 // Not implemented for testing
 func (hu *FakeHostUtil) GetSELinuxSupport(pathname string) (bool, error) {
-	return false, errors.New("GetSELinuxSupport not implemented")
+	return false, nil
 }
 
 // GetMode returns permissions of pathname.

vendor/k8s.io/kubernetes/pkg/volume/util/hostutil/hostutil_linux.go

@@ -28,6 +28,7 @@ import (
 
 	"golang.org/x/sys/unix"
 	"k8s.io/klog/v2"
+	"k8s.io/kubernetes/pkg/util/selinux"
 	"k8s.io/mount-utils"
 	utilpath "k8s.io/utils/path"
 )
@@ -229,8 +230,16 @@ func DoMakeRShared(path string, mountInfoFilename string) error {
 	return nil
 }
 
+// selinux.SELinuxEnabled implementation for unit tests
+type seLinuxEnabledFunc func() bool
+
 // GetSELinux is common implementation of GetSELinuxSupport on Linux.
-func GetSELinux(path string, mountInfoFilename string) (bool, error) {
+func GetSELinux(path string, mountInfoFilename string, selinuxEnabled seLinuxEnabledFunc) (bool, error) {
+	// Skip /proc/mounts parsing if SELinux is disabled.
+	if !selinuxEnabled() {
+		return false, nil
+	}
+
 	info, err := findMountInfo(path, mountInfoFilename)
 	if err != nil {
 		return false, err
@@ -253,7 +262,7 @@ func GetSELinux(path string, mountInfoFilename string) (bool, error) {
 // GetSELinuxSupport returns true if given path is on a mount that supports
 // SELinux.
 func (hu *HostUtil) GetSELinuxSupport(pathname string) (bool, error) {
-	return GetSELinux(pathname, procMountInfoPath)
+	return GetSELinux(pathname, procMountInfoPath, selinux.SELinuxEnabled)
 }
 
 // GetOwner returns the integer ID for the user and group of the given path

vendor/k8s.io/kubernetes/pkg/volume/util/subpath/subpath_linux.go

@@ -29,7 +29,6 @@ import (
 
 	"golang.org/x/sys/unix"
 	"k8s.io/klog/v2"
-	"k8s.io/kubernetes/pkg/volume/util/hostutil"
 	"k8s.io/mount-utils"
 )
 
@@ -109,12 +108,12 @@ func prepareSubpathTarget(mounter mount.Interface, subpath Subpath) (bool, strin
 		notMount = true
 	}
 	if !notMount {
-		linuxHostUtil := hostutil.NewHostUtil()
-		mntInfo, err := linuxHostUtil.FindMountInfo(bindPathTarget)
+		// It's already mounted, so check if it's bind-mounted to the same path
+		samePath, err := checkSubPathFileEqual(subpath, bindPathTarget)
 		if err != nil {
-			return false, "", fmt.Errorf("error calling findMountInfo for %s: %s", bindPathTarget, err)
+			return false, "", fmt.Errorf("error checking subpath mount info for %s: %s", bindPathTarget, err)
 		}
-		if mntInfo.Root != subpath.Path {
+		if !samePath {
 			// It's already mounted but not what we want, unmount it
 			if err = mounter.Unmount(bindPathTarget); err != nil {
 				return false, "", fmt.Errorf("error ummounting %s: %s", bindPathTarget, err)
@@ -155,6 +154,23 @@ func prepareSubpathTarget(mounter mount.Interface, subpath Subpath) (bool, strin
 	return false, bindPathTarget, nil
 }
 
+func checkSubPathFileEqual(subpath Subpath, bindMountTarget string) (bool, error) {
+	s, err := os.Lstat(subpath.Path)
+	if err != nil {
+		return false, fmt.Errorf("stat %s failed: %s", subpath.Path, err)
+	}
+
+	t, err := os.Lstat(bindMountTarget)
+	if err != nil {
+		return false, fmt.Errorf("lstat %s failed: %s", bindMountTarget, err)
+	}
+
+	if !os.SameFile(s, t) {
+		return false, nil
+	}
+	return true, nil
+}
+
 func getSubpathBindTarget(subpath Subpath) string {
 	// containerName is DNS label, i.e. safe as a directory name.
 	return filepath.Join(subpath.PodDir, containerSubPathDirectoryName, subpath.VolumeName, subpath.ContainerName, strconv.Itoa(subpath.VolumeMountIndex))