Merge pull request #81892 from praseodym/fix-staticcheck-pkg/volume

Fix staticcheck failures for pkg/volume/...

hack/.staticcheck_failures

@@ -15,19 +15,6 @@ pkg/registry/core/service/ipallocator
 pkg/registry/core/service/portallocator
 pkg/registry/core/service/storage
 pkg/util/coverage
-pkg/volume
-pkg/volume/azure_dd
-pkg/volume/csi
-pkg/volume/flexvolume
-pkg/volume/iscsi
-pkg/volume/local
-pkg/volume/quobyte
-pkg/volume/rbd
-pkg/volume/storageos
-pkg/volume/util
-pkg/volume/util/fsquota
-pkg/volume/util/fsquota/common
-pkg/volume/util/subpath
 test/e2e/apps
 test/e2e/autoscaling
 test/integration/examples

pkg/volume/azure_dd/azure_common.go

@@ -64,8 +64,7 @@ var (
 		string(api.AzureManagedDisk))
 
 	// only for Windows node
-	winDiskNumRE     = regexp.MustCompile(`/dev/disk(.+)`)
-	winDiskNumFormat = "/dev/disk%d"
+	winDiskNumRE = regexp.MustCompile(`/dev/disk(.+)`)
 )
 
 func getPath(uid types.UID, volName string, host volume.VolumeHost) string {

pkg/volume/azure_dd/azure_common_windows.go

@@ -30,6 +30,8 @@ import (
 	"k8s.io/utils/mount"
 )
 
+var winDiskNumFormat = "/dev/disk%d"
+
 func scsiHostRescan(io ioHandler, exec utilexec.Interface) {
 	cmd := "Update-HostStorageCache"
 	output, err := exec.Command("powershell", "/c", cmd).CombinedOutput()

pkg/volume/csi/csi_block.go

@@ -94,7 +94,6 @@ type csiBlockMapper struct {
 	readOnly   bool
 	spec       *volume.Spec
 	podUID     types.UID
-	volumeInfo map[string]string
 }
 
 var _ volume.BlockVolumeMapper = &csiBlockMapper{}

pkg/volume/csi/csi_block_test.go

@@ -53,40 +53,6 @@ func prepareBlockMapperTest(plug *csiPlugin, specVolumeName string, t *testing.T
 	return csiMapper, spec, pv, nil
 }
 
-func prepareBlockUnmapperTest(plug *csiPlugin, specVolumeName string, t *testing.T) (*csiBlockMapper, *volume.Spec, *api.PersistentVolume, error) {
-	registerFakePlugin(testDriver, "endpoint", []string{"1.0.0"}, t)
-	pv := makeTestPV(specVolumeName, 10, testDriver, testVol)
-	spec := volume.NewSpecFromPersistentVolume(pv, pv.Spec.PersistentVolumeSource.CSI.ReadOnly)
-
-	// save volume data
-	dir := getVolumeDeviceDataDir(pv.ObjectMeta.Name, plug.host)
-	if err := os.MkdirAll(dir, 0755); err != nil && !os.IsNotExist(err) {
-		t.Errorf("failed to create dir [%s]: %v", dir, err)
-	}
-
-	if err := saveVolumeData(
-		dir,
-		volDataFileName,
-		map[string]string{
-			volDataKey.specVolID:  pv.ObjectMeta.Name,
-			volDataKey.driverName: testDriver,
-			volDataKey.volHandle:  testVol,
-		},
-	); err != nil {
-		t.Fatalf("failed to save volume data: %v", err)
-	}
-
-	unmapper, err := plug.NewBlockVolumeUnmapper(pv.ObjectMeta.Name, testPodUID)
-	if err != nil {
-		t.Fatalf("failed to make a new Unmapper: %v", err)
-	}
-
-	csiUnmapper := unmapper.(*csiBlockMapper)
-	csiUnmapper.csiClient = setupClient(t, true)
-
-	return csiUnmapper, spec, pv, nil
-}
-
 func TestBlockMapperGetGlobalMapPath(t *testing.T) {
 	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIBlockVolume, true)()
 

pkg/volume/csi/csi_client.go

@@ -23,7 +23,6 @@ import (
 	"io"
 	"net"
 	"sync"
-	"time"
 
 	csipbv1 "github.com/container-storage-interface/spec/lib/go/csi"
 	"google.golang.org/grpc"
@@ -104,12 +103,6 @@ type nodeV1ClientCreator func(addr csiAddr) (
 	err error,
 )
 
-const (
-	initialDuration = 1 * time.Second
-	factor          = 2.0
-	steps           = 5
-)
-
 // newV1NodeClient creates a new NodeClient with the internally used gRPC
 // connection set up. It also returns a closer which must to be called to close
 // the gRPC connection when the NodeClient is not used anymore.

pkg/volume/csi/csi_client_test.go

@@ -81,6 +81,9 @@ func (c *fakeCsiDriverClient) NodeGetVolumeStats(ctx context.Context, volID stri
 		VolumePath: targetPath,
 	}
 	resp, err := c.nodeClient.NodeGetVolumeStats(ctx, req)
+	if err != nil {
+		return nil, err
+	}
 	usages := resp.GetUsage()
 	metrics := &volume.Metrics{}
 	if usages == nil {

pkg/volume/csi/csi_mounter.go

@@ -73,7 +73,6 @@ type csiMountMgr struct {
 	spec                *volume.Spec
 	pod                 *api.Pod
 	podUID              types.UID
-	options             volume.VolumeOptions
 	publishContext      map[string]string
 	kubeVolHost         volume.KubeletVolumeHost
 	volume.MetricsProvider

pkg/volume/csi/csi_mounter_test.go

@@ -456,8 +456,8 @@ func TestMounterSetupWithStatusTracking(t *testing.T) {
 				&api.Pod{ObjectMeta: meta.ObjectMeta{UID: tc.podUID, Namespace: testns}},
 				volume.VolumeOptions{},
 			)
-			if mounter == nil {
-				t.Fatal("failed to create CSI mounter")
+			if err != nil {
+				t.Fatalf("failed to create CSI mounter: %v", err)
 			}
 
 			csiMounter := mounter.(*csiMountMgr)

pkg/volume/csi/csi_plugin_test.go

@@ -623,7 +623,7 @@ func TestPluginNewMounter(t *testing.T) {
 			}
 			csiClient, err := csiMounter.csiClientGetter.Get()
 			if csiClient == nil {
-				t.Error("mounter csiClient is nil")
+				t.Errorf("mounter csiClient is nil: %v", err)
 			}
 			if err != nil {
 				t.Fatal(err)
@@ -765,7 +765,7 @@ func TestPluginNewMounterWithInline(t *testing.T) {
 				}
 				csiClient, err := csiMounter.csiClientGetter.Get()
 				if csiClient == nil {
-					t.Error("mounter csiClient is nil")
+					t.Errorf("mounter csiClient is nil: %v", err)
 				}
 				if csiMounter.volumeLifecycleMode != test.volumeLifecycleMode {
 					t.Error("unexpected driver mode:", csiMounter.volumeLifecycleMode)
@@ -860,7 +860,7 @@ func TestPluginNewUnmounter(t *testing.T) {
 
 	csiClient, err := csiUnmounter.csiClientGetter.Get()
 	if csiClient == nil {
-		t.Error("mounter csiClient is nil")
+		t.Errorf("mounter csiClient is nil: %v", err)
 	}
 }
 
@@ -1185,7 +1185,7 @@ func TestPluginNewBlockMapper(t *testing.T) {
 	}
 	csiClient, err := csiMapper.csiClientGetter.Get()
 	if csiClient == nil {
-		t.Error("mapper csiClient is nil")
+		t.Errorf("mapper csiClient is nil: %v", err)
 	}
 
 	// ensure data file is created
@@ -1248,7 +1248,7 @@ func TestPluginNewUnmapper(t *testing.T) {
 
 	csiClient, err := csiUnmapper.csiClientGetter.Get()
 	if csiClient == nil {
-		t.Error("unmapper csiClient is nil")
+		t.Errorf("unmapper csiClient is nil: %v", err)
 	}
 
 	// test loaded vol data

pkg/volume/csi/csi_test.go

@@ -305,7 +305,8 @@ func TestCSI_VolumeAll(t *testing.T) {
 				go func(spec *volume.Spec, nodeName types.NodeName) {
 					attachID, err := volAttacher.Attach(spec, nodeName)
 					if err != nil {
-						t.Fatalf("csiTest.VolumeAll attacher.Attach failed: %s", err)
+						t.Errorf("csiTest.VolumeAll attacher.Attach failed: %s", err)
+						return
 					}
 					t.Logf("csiTest.VolumeAll got attachID %s", attachID)
 

pkg/volume/flexvolume/probe_test.go

@@ -65,6 +65,7 @@ func TestProberAddRemoveDriver(t *testing.T) {
 	_, fs, watcher, prober := initTestEnvironment(t)
 	prober.Probe()
 	events, err := prober.Probe()
+	assert.NoError(t, err)
 	assert.Equal(t, 0, len(events))
 
 	// Call probe after a file is added. Should return 1 event.

pkg/volume/iscsi/iscsi_test.go

@@ -91,9 +91,7 @@ func TestGetAccessModes(t *testing.T) {
 }
 
 type fakeDiskManager struct {
-	tmpDir       string
-	attachCalled bool
-	detachCalled bool
+	tmpDir string
 }
 
 func NewFakeDiskManager() *fakeDiskManager {
@@ -498,11 +496,11 @@ func TestGetISCSICHAP(t *testing.T) {
 		},
 	}
 	for _, testcase := range tests {
-		resultDiscoveryCHAP, err := getISCSIDiscoveryCHAPInfo(testcase.spec)
+		resultDiscoveryCHAP, _ := getISCSIDiscoveryCHAPInfo(testcase.spec)
 		resultSessionCHAP, err := getISCSISessionCHAPInfo(testcase.spec)
 		switch testcase.name {
 		case "no volume":
-			if err.Error() != testcase.expectedError.Error() || resultDiscoveryCHAP != testcase.expectedDiscoveryCHAP || resultSessionCHAP != testcase.expectedSessionCHAP {
+			if err == nil || err.Error() != testcase.expectedError.Error() || resultDiscoveryCHAP != testcase.expectedDiscoveryCHAP || resultSessionCHAP != testcase.expectedSessionCHAP {
 				t.Errorf("%s failed: expected err=%v DiscoveryCHAP=%v SessionCHAP=%v, got %v/%v/%v",
 					testcase.name, testcase.expectedError, testcase.expectedDiscoveryCHAP, testcase.expectedSessionCHAP,
 					err, resultDiscoveryCHAP, resultSessionCHAP)

pkg/volume/iscsi/iscsi_util_test.go

@@ -156,7 +156,7 @@ func TestWaitForPathToExist(t *testing.T) {
 		t.Errorf("waitForPathToExist: wrong code path called for %s", devicePath[1])
 	}
 
-	exist = waitForPathToExistInternal(&devicePath[1], 1, "fake_iface", os.Stat, fakeFilepathGlob2)
+	_ = waitForPathToExistInternal(&devicePath[1], 1, "fake_iface", os.Stat, fakeFilepathGlob2)
 	if devicePath[1] != fpath {
 		t.Errorf("waitForPathToExist: wrong code path called for %s", devicePath[1])
 	}

pkg/volume/local/local.go

@@ -360,8 +360,7 @@ func (dm *deviceMounter) MountDevice(spec *volume.Spec, devicePath string, devic
 	switch fileType {
 	case hostutil.FileTypeBlockDev:
 		// local volume plugin does not implement AttachableVolumePlugin interface, so set devicePath to Path in PV spec directly
-		devicePath = spec.PersistentVolume.Spec.Local.Path
-		return dm.mountLocalBlockDevice(spec, devicePath, deviceMountPath)
+		return dm.mountLocalBlockDevice(spec, spec.PersistentVolume.Spec.Local.Path, deviceMountPath)
 	case hostutil.FileTypeDirectory:
 		// if the given local volume path is of already filesystem directory, return directly
 		return nil

pkg/volume/plugins_test.go

@@ -116,13 +116,13 @@ func TestVolumePluginMgrFunc(t *testing.T) {
 		t.Errorf("Wrong name: %s", plug.GetPluginName())
 	}
 
-	plug, err = vpm.FindPluginBySpec(nil)
+	_, err = vpm.FindPluginBySpec(nil)
 	if err == nil {
 		t.Errorf("Should return error if volume spec is nil")
 	}
 
 	volumeSpec := &Spec{}
-	plug, err = vpm.FindPluginBySpec(volumeSpec)
+	_, err = vpm.FindPluginBySpec(volumeSpec)
 	if err != nil {
 		t.Errorf("Should return test plugin if volume spec is not nil")
 	}

pkg/volume/quobyte/quobyte.go

@@ -465,19 +465,14 @@ func parseAPIConfig(plugin *quobytePlugin, params map[string]string) (*quobyteAP
 	var apiServer, secretName string
 	secretNamespace := "default"
 
-	deleteKeys := []string{}
-
 	for k, v := range params {
 		switch gostrings.ToLower(k) {
 		case "adminsecretname":
 			secretName = v
-			deleteKeys = append(deleteKeys, k)
 		case "adminsecretnamespace":
 			secretNamespace = v
-			deleteKeys = append(deleteKeys, k)
 		case "quobyteapiserver":
 			apiServer = v
-			deleteKeys = append(deleteKeys, k)
 		}
 	}
 

pkg/volume/rbd/rbd.go

@@ -879,14 +879,10 @@ var _ volume.BlockVolumeMapper = &rbdDiskMapper{}
 
 type rbdDiskMapper struct {
 	*rbd
-	mon           []string
-	id            string
-	keyring       string
-	secret        string
-	adminSecret   string
-	adminID       string
-	imageFormat   string
-	imageFeatures []string
+	mon     []string
+	id      string
+	keyring string
+	secret  string
 }
 
 var _ volume.BlockVolumeUnmapper = &rbdDiskUnmapper{}

pkg/volume/storageos/storageos.go

@@ -299,7 +299,6 @@ type storageos struct {
 	pvName       string
 	volName      string
 	volNamespace string
-	secretName   string
 	readOnly     bool
 	description  string
 	pool         string

pkg/volume/storageos/storageos_test.go

@@ -373,8 +373,7 @@ func TestPersistentClaimReadOnlyFlag(t *testing.T) {
 	spec := volume.NewSpecFromPersistentVolume(pv, true)
 	pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{Namespace: "nsA", UID: types.UID("poduid")}}
 	fakeManager := &fakePDManager{}
-	fakeConfig := &fakeConfig{}
-	apiCfg := fakeConfig.GetAPIConfig()
+	apiCfg := GetAPIConfig()
 	mounter, err := plug.(*storageosPlugin).newMounterInternal(spec, pod, apiCfg, fakeManager, mount.NewFakeMounter(nil), &testingexec.FakeExec{})
 	if err != nil {
 		t.Fatalf("error creating a new internal mounter:%v", err)

pkg/volume/storageos/storageos_util_test.go

@@ -39,14 +39,7 @@ var testPool = "testpool"
 var testFSType = "ext2"
 var testVolUUID = "01c43d34-89f8-83d3-422b-43536a0f25e6"
 
-type fakeConfig struct {
-	apiAddr    string
-	apiUser    string
-	apiPass    string
-	apiVersion string
-}
-
-func (c fakeConfig) GetAPIConfig() *storageosAPIConfig {
+func GetAPIConfig() *storageosAPIConfig {
 	return &storageosAPIConfig{
 		apiAddr:    "http://5.6.7.8:9999",
 		apiUser:    "abc",
@@ -57,8 +50,7 @@ func (c fakeConfig) GetAPIConfig() *storageosAPIConfig {
 
 func TestClient(t *testing.T) {
 	util := storageosUtil{}
-	cfg := fakeConfig{}
-	err := util.NewAPI(cfg.GetAPIConfig())
+	err := util.NewAPI(GetAPIConfig())
 	if err != nil {
 		t.Fatalf("error getting api config: %v", err)
 	}

pkg/volume/util/atomic_writer_test.go

@@ -753,7 +753,7 @@ func checkVolumeContents(targetDir, tcName string, payload map[string]FileProjec
 	dataDirPath := filepath.Join(targetDir, dataDirName)
 	// use filepath.Walk to reconstruct the payload, then deep equal
 	observedPayload := make(map[string]FileProjection)
-	visitor := func(path string, info os.FileInfo, err error) error {
+	visitor := func(path string, info os.FileInfo, _ error) error {
 		if info.IsDir() {
 			return nil
 		}

pkg/volume/util/fsquota/common/quota_linux_common.go

@@ -33,11 +33,6 @@ const (
 	BadQuotaID QuotaID = 0
 )
 
-const (
-	acct      = iota
-	enforcing = iota
-)
-
 // QuotaType -- type of quota to be applied
 type QuotaType int
 

pkg/volume/util/fsquota/project.go

@@ -165,7 +165,7 @@ func readProjectFiles(projects *os.File, projid *os.File) projectsList {
 
 func findAvailableQuota(path string, idMap map[common.QuotaID]bool) (common.QuotaID, error) {
 	unusedQuotasSearched := 0
-	for id := common.FirstQuota; id == id; id++ {
+	for id := common.FirstQuota; true; id++ {
 		if _, ok := idMap[id]; !ok {
 			isInUse, err := getApplier(path).QuotaIDIsInUse(id)
 			if err != nil {

pkg/volume/util/fsquota/quota_linux.go

@@ -303,6 +303,7 @@ func SupportsQuotas(m mount.Interface, path string) (bool, error) {
 // AssignQuota chooses the quota ID based on the pod UID and path.
 // If the pod UID is identical to another one known, it may (but presently
 // doesn't) choose the same quota ID as other volumes in the pod.
+//lint:ignore SA4009 poduid is overwritten by design, see comment below
 func AssignQuota(m mount.Interface, path string, poduid types.UID, bytes *resource.Quantity) error {
 	if bytes == nil {
 		return fmt.Errorf("Attempting to assign null quota to %s", path)
@@ -316,7 +317,7 @@ func AssignQuota(m mount.Interface, path string, poduid types.UID, bytes *resour
 	// Current policy is to set individual quotas on each volumes.
 	// If we decide later that we want to assign one quota for all
 	// volumes in a pod, we can simply remove this line of code.
-	// If and when we decide permanently that we're going to adop
+	// If and when we decide permanently that we're going to adopt
 	// one quota per volume, we can rip all of the pod code out.
 	poduid = types.UID(uuid.NewUUID())
 	if pod, ok := dirPodMap[path]; ok && pod != poduid {

pkg/volume/util/fsquota/quota_linux_test.go

@@ -555,7 +555,7 @@ func runCaseDisabled(t *testing.T, testcase quotaTestCase, seq int) bool {
 	var supports bool
 	switch testcase.op {
 	case "Supports":
-		if supports, err = fakeSupportsQuotas(testcase.path); supports {
+		if supports, _ = fakeSupportsQuotas(testcase.path); supports {
 			t.Errorf("Case %v (%s, %v) supports quotas but shouldn't", seq, testcase.path, false)
 			return true
 		}

pkg/volume/util/subpath/subpath_linux.go

@@ -229,7 +229,7 @@ func doCleanSubPaths(mounter mount.Interface, podDir string, volumeName string)
 
 		// scan /var/lib/kubelet/pods/<uid>/volume-subpaths/<volume>/<container name>/*
 		fullContainerDirPath := filepath.Join(subPathDir, containerDir.Name())
-		err = filepath.Walk(fullContainerDirPath, func(path string, info os.FileInfo, err error) error {
+		err = filepath.Walk(fullContainerDirPath, func(path string, info os.FileInfo, _ error) error {
 			if path == fullContainerDirPath {
 				// Skip top level directory
 				return nil

pkg/volume/util/subpath/subpath_linux_test.go

@@ -576,13 +576,13 @@ func TestCleanSubPaths(t *testing.T) {
 				return mounts, nil
 			},
 			unmount: func(mountpath string) error {
-				err := filepath.Walk(mountpath, func(path string, info os.FileInfo, err error) error {
+				err := filepath.Walk(mountpath, func(path string, info os.FileInfo, _ error) error {
 					if path == mountpath {
 						// Skip top level directory
 						return nil
 					}
 
-					if err = os.Remove(path); err != nil {
+					if err := os.Remove(path); err != nil {
 						return err
 					}
 					return filepath.SkipDir