rbd: implement pv key rotation

This patch implements the EncryptionKeyRotation spec for ceph-csi

Signed-off-by: Niraj Yadav <niryadav@redhat.com>

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/ceph/ceph-csi/api v0.0.0-00010101000000-000000000000
 	github.com/ceph/go-ceph v0.28.0
 	github.com/container-storage-interface/spec v1.10.0
-	github.com/csi-addons/spec v0.2.1-0.20240627093359-0dd74d521e67
+	github.com/csi-addons/spec v0.2.1-0.20240718113938-dc98b454ba65
 	github.com/gemalto/kmip-go v0.0.10
 	github.com/golang/protobuf v1.5.4
 	github.com/google/fscrypt v0.3.6-0.20240502174735-068b9f8f5dec

go.sum

@@ -911,8 +911,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46t
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creack/pty v1.1.18/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
-github.com/csi-addons/spec v0.2.1-0.20240627093359-0dd74d521e67 h1:UAcAhE1pTkWaFBS0kvhHUcUsoEv5fsieD0tl8psQMCs=
+github.com/csi-addons/spec v0.2.1-0.20240718113938-dc98b454ba65 h1:i9JGGQTEmRQXSpQQPR96+DV4D4o+V1+gjAWf+bpxQxk=
-github.com/csi-addons/spec v0.2.1-0.20240627093359-0dd74d521e67/go.mod h1:Mwq4iLiUV4s+K1bszcWU6aMsR5KPsbIYzzszJ6+56vI=
+github.com/csi-addons/spec v0.2.1-0.20240718113938-dc98b454ba65/go.mod h1:Mwq4iLiUV4s+K1bszcWU6aMsR5KPsbIYzzszJ6+56vI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=

internal/csi-addons/rbd/encryptionkeyrotation.go

@@ -0,0 +1,101 @@
+/*
+Copyright 2024 The Ceph-CSI 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 rbd
+
+import (
+	"context"
+	"errors"
+
+	csicommon "github.com/ceph/ceph-csi/internal/csi-common"
+	"github.com/ceph/ceph-csi/internal/rbd"
+	"github.com/ceph/ceph-csi/internal/util"
+	"github.com/ceph/ceph-csi/internal/util/log"
+
+	"github.com/container-storage-interface/spec/lib/go/csi"
+	ekr "github.com/csi-addons/spec/lib/go/encryptionkeyrotation"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+type EncryptionKeyRotationServer struct {
+	*ekr.UnimplementedEncryptionKeyRotationControllerServer
+	volLock *util.VolumeLocks
+}
+
+func NewEncryptionKeyRotationServer(volLock *util.VolumeLocks) *EncryptionKeyRotationServer {
+	return &EncryptionKeyRotationServer{volLock: volLock}
+}
+
+func (ekrs *EncryptionKeyRotationServer) RegisterService(svc grpc.ServiceRegistrar) {
+	ekr.RegisterEncryptionKeyRotationControllerServer(svc, ekrs)
+}
+
+func (ekrs *EncryptionKeyRotationServer) EncryptionKeyRotate(
+	ctx context.Context,
+	req *ekr.EncryptionKeyRotateRequest,
+) (*ekr.EncryptionKeyRotateResponse, error) {
+	// Get the volume ID from the request
+	volID := req.GetVolumeId()
+	if volID == "" {
+		return nil, status.Error(codes.InvalidArgument, "empty volume ID in request")
+	}
+
+	// Block key rotation for RWX/ROX volumes
+	_, isMultiNode := csicommon.IsBlockMultiNode([]*csi.VolumeCapability{req.GetVolumeCapability()})
+	if isMultiNode {
+		return nil, status.Error(codes.Unimplemented, "multi-node key rotation is not supported")
+	}
+
+	if acquired := ekrs.volLock.TryAcquire(volID); !acquired {
+		return nil, status.Errorf(codes.Aborted, util.VolumeOperationAlreadyExistsFmt, volID)
+	}
+	defer ekrs.volLock.Release(volID)
+
+	// Get the credentials required to authenticate
+	// against a ceph cluster
+	creds, err := util.NewUserCredentials(req.GetSecrets())
+	if err != nil {
+		return nil, status.Error(codes.Internal, err.Error())
+	}
+	defer creds.DeleteCredentials()
+
+	rbdVol, err := rbd.GenVolFromVolID(ctx, volID, creds, req.GetSecrets())
+	if err != nil {
+		switch {
+		case errors.Is(err, rbd.ErrImageNotFound):
+			err = status.Errorf(codes.NotFound, "volume ID %s not found", volID)
+		case errors.Is(err, util.ErrPoolNotFound):
+			log.ErrorLog(ctx, "failed to get backend volume for %s: %v", volID, err)
+			err = status.Errorf(codes.NotFound, err.Error())
+		default:
+			err = status.Errorf(codes.Internal, err.Error())
+		}
+
+		return nil, err
+	}
+	defer rbdVol.Destroy(ctx)
+
+	err = rbdVol.RotateEncryptionKey(ctx)
+	if err != nil {
+		return nil, status.Errorf(
+			codes.Internal, "failed to rotate the key for volume with ID %q: %s", volID, err.Error())
+	}
+
+	// Success
+	return &ekr.EncryptionKeyRotateResponse{}, nil
+}

internal/csi-addons/rbd/identity.go

@@ -133,6 +133,13 @@ func (is *IdentityServer) GetCapabilities(
 						Type: identity.Capability_ReclaimSpace_ONLINE,
 					},
 				},
+			},
+			&identity.Capability{
+				Type: &identity.Capability_EncryptionKeyRotation_{
+					EncryptionKeyRotation: &identity.Capability_EncryptionKeyRotation{
+						Type: identity.Capability_EncryptionKeyRotation_ENCRYPTIONKEYROTATION,
+					},
+				},
 			})
 	}
 

internal/kms/vault.go

@@ -28,6 +28,8 @@ import (
 	"github.com/hashicorp/vault/api"
 	loss "github.com/libopenstorage/secrets"
 	"github.com/libopenstorage/secrets/vault"
+
+	"github.com/ceph/ceph-csi/internal/util/file"
 )
 
 const (
@@ -269,10 +271,12 @@ func (vc *vaultConnection) initCertificates(config map[string]interface{}, secre
 			return fmt.Errorf("missing vault CA in secret %s", vaultCAFromSecret)
 		}
 
-		vaultConfig[api.EnvVaultCACert], err = createTempFile("vault-ca-cert", []byte(caPEM))
+		tf, err := file.CreateTempFile("vault-ca-cert", caPEM)
 		if err != nil {
 			return fmt.Errorf("failed to create temporary file for Vault CA: %w", err)
 		}
+		vaultConfig[api.EnvVaultCACert] = tf.Name()
+
 		// update the existing config
 		for key, value := range vaultConfig {
 			vc.vaultConfig[key] = value
@@ -480,31 +484,3 @@ func detectAuthMountPath(path string) (string, error) {
 
 	return authMountPath, nil
 }
-
-// createTempFile writes data to a temporary file that contains the pattern in
-// the filename (see os.CreateTemp for details).
-func createTempFile(pattern string, data []byte) (string, error) {
-	t, err := os.CreateTemp("", pattern)
-	if err != nil {
-		return "", fmt.Errorf("failed to create temporary file: %w", err)
-	}
-
-	// delete the tmpfile on error
-	defer func() {
-		if err != nil {
-			// ignore error on failure to remove tmpfile (gosec complains)
-			_ = os.Remove(t.Name())
-		}
-	}()
-
-	s, err := t.Write(data)
-	if err != nil || s != len(data) {
-		return "", fmt.Errorf("failed to write temporary file: %w", err)
-	}
-	err = t.Close()
-	if err != nil {
-		return "", fmt.Errorf("failed to close temporary file: %w", err)
-	}
-
-	return t.Name(), nil
-}

internal/kms/vault_test.go

@@ -18,7 +18,6 @@ package kms
 
 import (
 	"errors"
-	"os"
 	"testing"
 
 	loss "github.com/libopenstorage/secrets"
@@ -44,23 +43,6 @@ func TestDetectAuthMountPath(t *testing.T) {
 	}
 }
 
-func TestCreateTempFile(t *testing.T) {
-	t.Parallel()
-	data := []byte("Hello World!")
-	tmpfile, err := createTempFile("my-file", data)
-	if err != nil {
-		t.Errorf("createTempFile() failed: %s", err)
-	}
-	if tmpfile == "" {
-		t.Errorf("createTempFile() returned an empty filename")
-	}
-
-	err = os.Remove(tmpfile)
-	if err != nil {
-		t.Errorf("failed to remove tmpfile (%s): %s", tmpfile, err)
-	}
-}
-
 func TestSetConfigString(t *testing.T) {
 	t.Parallel()
 	const defaultValue = "default-value"

internal/kms/vault_tokens.go

@@ -24,6 +24,7 @@ import (
 	"os"
 	"strconv"
 
+	"github.com/ceph/ceph-csi/internal/util/file"
 	"github.com/ceph/ceph-csi/internal/util/k8s"
 
 	"github.com/hashicorp/vault/api"
@@ -378,10 +379,11 @@ func (vtc *vaultTenantConnection) initCertificates(config map[string]interface{}
 				return fmt.Errorf("failed to get CA certificate from secret %s: %w", vaultCAFromSecret, cErr)
 			}
 		}
-		vaultConfig[api.EnvVaultCACert], err = createTempFile("vault-ca-cert", []byte(cert))
+		cer, ferr := file.CreateTempFile("vault-ca-cert", cert)
-		if err != nil {
+		if ferr != nil {
-			return fmt.Errorf("failed to create temporary file for Vault CA: %w", err)
+			return fmt.Errorf("failed to create temporary file for Vault CA: %w", ferr)
 		}
+		vaultConfig[api.EnvVaultCACert] = cer.Name()
 	}
 
 	vaultClientCertFromSecret := "" // optional
@@ -403,10 +405,11 @@ func (vtc *vaultTenantConnection) initCertificates(config map[string]interface{}
 				return fmt.Errorf("failed to get client certificate from secret %s: %w", vaultCAFromSecret, cErr)
 			}
 		}
-		vaultConfig[api.EnvVaultClientCert], err = createTempFile("vault-ca-cert", []byte(cert))
+		cer, ferr := file.CreateTempFile("vault-ca-cert", cert)
-		if err != nil {
+		if ferr != nil {
-			return fmt.Errorf("failed to create temporary file for Vault client certificate: %w", err)
+			return fmt.Errorf("failed to create temporary file for Vault client certificate: %w", ferr)
 		}
+		vaultConfig[api.EnvVaultClientCert] = cer.Name()
 	}
 
 	vaultClientCertKeyFromSecret := "" // optional
@@ -432,10 +435,11 @@ func (vtc *vaultTenantConnection) initCertificates(config map[string]interface{}
 				return fmt.Errorf("failed to get client certificate key from secret %s: %w", vaultCAFromSecret, err)
 			}
 		}
-		vaultConfig[api.EnvVaultClientKey], err = createTempFile("vault-client-cert-key", []byte(certKey))
+		ckey, err := file.CreateTempFile("vault-client-cert-key", certKey)
 		if err != nil {
 			return fmt.Errorf("failed to create temporary file for Vault client cert key: %w", err)
 		}
+		vaultConfig[api.EnvVaultClientKey] = ckey.Name()
 	}
 
 	for key, value := range vaultConfig {

internal/rbd/driver/driver.go

@@ -229,6 +229,9 @@ func (r *Driver) setupCSIAddonsServer(conf *util.Config) error {
 	if conf.IsNodeServer {
 		rs := casrbd.NewReclaimSpaceNodeServer()
 		r.cas.RegisterService(rs)
+
+		ekr := casrbd.NewEncryptionKeyRotationServer(r.ns.VolumeLocks)
+		r.cas.RegisterService(ekr)
 	}
 
 	// start the server, this does not block, it runs a new go-routine

internal/rbd/encryption.go

@@ -63,6 +63,10 @@ const (
 	// user did not specify an "encryptionType", but set
 	// "encryption": true.
 	rbdDefaultEncryptionType = util.EncryptionTypeBlock
+
+	// Luks slots.
+	luksSlot0 = "0"
+	luksSlot1 = "1"
 )
 
 // checkRbdImageEncrypted verifies if rbd image was encrypted when created.
@@ -437,3 +441,72 @@ func (ri *rbdImage) RemoveDEK(ctx context.Context, volumeID string) error {
 
 	return nil
 }
+
+// GetEncryptionPassphraseSize returns the value of `encryptionPassphraseSize`.
+func GetEncryptionPassphraseSize() int {
+	return encryptionPassphraseSize
+}
+
+// RotateEncryptionKey processes the key rotation for the RBD Volume.
+func (rv *rbdVolume) RotateEncryptionKey(ctx context.Context) error {
+	if !rv.isBlockEncrypted() {
+		return errors.New("key rotation unsupported for non block encrypted device")
+	}
+
+	// Verify that the underlying device has been setup for encryption
+	currState, err := rv.checkRbdImageEncrypted(ctx)
+	if err != nil {
+		return fmt.Errorf("failed to check encryption state: %w", err)
+	}
+
+	if currState != rbdImageEncrypted {
+		return errors.New("key rotation not supported for unencrypted device")
+	}
+
+	// Get the device path for the underlying image
+	useNbd := rv.Mounter == rbdNbdMounter && hasNBD
+	devicePath, found := waitForPath(ctx, rv.Pool, rv.RadosNamespace, rv.RbdImageName, 1, useNbd)
+	if !found {
+		return fmt.Errorf("failed to get the device path for %q: %w", rv, err)
+	}
+
+	// Step 1: Get the current passphrase
+	oldPassphrase, err := rv.blockEncryption.GetCryptoPassphrase(ctx, rv.VolID)
+	if err != nil {
+		return fmt.Errorf("failed to fetch the current passphrase for %q: %w", rv, err)
+	}
+
+	// Step 2: Add current key to slot 1
+	err = util.LuksAddKey(devicePath, oldPassphrase, oldPassphrase, luksSlot1)
+	if err != nil {
+		return fmt.Errorf("failed to add curr key to luksSlot1: %w", err)
+	}
+
+	// Step 3: Generate new key and add it to slot 0
+	newPassphrase, err := rv.blockEncryption.GetNewCryptoPassphrase(
+		GetEncryptionPassphraseSize())
+	if err != nil {
+		return fmt.Errorf("failed to generate a new passphrase: %w", err)
+	}
+
+	err = util.LuksAddKey(devicePath, oldPassphrase, newPassphrase, luksSlot0)
+	if err != nil {
+		return fmt.Errorf("failed to add the new key to luksSlot0: %w", err)
+	}
+
+	// Step 4: Add the new key to KMS
+	err = rv.blockEncryption.StoreCryptoPassphrase(ctx, rv.VolID, newPassphrase)
+	if err != nil {
+		return fmt.Errorf("failed to update the new key into the KMS: %w", err)
+	}
+
+	// Step 5: Remove the old key from slot 1
+	// We use the newPassphrase to authenticate LUKS here
+	err = util.LuksRemoveKey(devicePath, newPassphrase, luksSlot1)
+	if err != nil {
+		return fmt.Errorf("failed to remove the backup key from luksSlot1: %w", err)
+	}
+
+	// Return error accordingly.
+	return nil
+}

internal/util/crypto.go

@@ -237,6 +237,11 @@ func (ve *VolumeEncryption) GetCryptoPassphrase(ctx context.Context, volumeID st
 	return ve.KMS.DecryptDEK(ctx, volumeID, passphrase)
 }
 
+// GetNewCryptoPassphrase returns a random passphrase of given length.
+func (ve *VolumeEncryption) GetNewCryptoPassphrase(length int) (string, error) {
+	return generateNewEncryptionPassphrase(length)
+}
+
 // generateNewEncryptionPassphrase generates a random passphrase for encryption.
 func generateNewEncryptionPassphrase(length int) (string, error) {
 	bytesPassphrase := make([]byte, length)

internal/util/cryptsetup.go

@@ -19,9 +19,13 @@ package util
 import (
 	"bytes"
 	"fmt"
+	"os"
 	"os/exec"
 	"strconv"
 	"strings"
+
+	"github.com/ceph/ceph-csi/internal/util/file"
+	"github.com/ceph/ceph-csi/internal/util/log"
 )
 
 // Limit memory used by Argon2i PBKDF to 32 MiB.
@@ -66,6 +70,135 @@ func LuksStatus(mapperFile string) (string, string, error) {
 	return execCryptsetupCommand(nil, "status", mapperFile)
 }
 
+// LuksAddKey adds a new key to the specified slot.
+func LuksAddKey(devicePath, passphrase, newPassphrase, slot string) error {
+	passFile, err := file.CreateTempFile("luks-", passphrase)
+	if err != nil {
+		return err
+	}
+	defer os.Remove(passFile.Name())
+
+	newPassFile, err := file.CreateTempFile("luks-", newPassphrase)
+	if err != nil {
+		return err
+	}
+	defer os.Remove(newPassFile.Name())
+
+	_, stderr, err := execCryptsetupCommand(
+		nil,
+		"--verbose",
+		"--key-file="+passFile.Name(),
+		"--key-slot="+slot,
+		"luksAddKey",
+		devicePath,
+		newPassFile.Name(),
+	)
+
+	// Return early if no error to save us some time
+	if err == nil {
+		return nil
+	}
+
+	// Possible scenarios
+	// 1. The provided passphrase to unlock the disk is wrong
+	// 2. The key slot is already in use
+	// 	  If so, check if the key we want to add to the slot is already there
+	//    If not, remove it and then add the new key to the slot
+	if strings.Contains(stderr, fmt.Sprintf("Key slot %s is full", slot)) {
+		// The given slot already has a key
+		// Check if it is the one that we want to update with
+		exists, fErr := LuksVerifyKey(devicePath, newPassphrase, slot)
+		if fErr != nil {
+			return fErr
+		}
+
+		// Verification passed, return early
+		if exists {
+			return nil
+		}
+
+		// Else, we remove the key from the given slot and add the new one
+		// Note: we use existing passphrase here as we are not yet sure if
+		// the newPassphrase is present in the headers
+		fErr = LuksRemoveKey(devicePath, passphrase, slot)
+		if fErr != nil {
+			return fErr
+		}
+
+		// Now the slot is free, add the new key to it
+		fErr = LuksAddKey(devicePath, passphrase, newPassphrase, slot)
+		if fErr != nil {
+			return fErr
+		}
+
+		// No errors, we good.
+		return nil
+	}
+
+	// The existing passphrase is wrong and the slot is empty
+	return err
+}
+
+// LuksRemoveKey removes the key by killing the specified slot.
+func LuksRemoveKey(devicePath, passphrase, slot string) error {
+	keyFile, err := file.CreateTempFile("luks-", passphrase)
+	if err != nil {
+		return err
+	}
+	defer os.Remove(keyFile.Name())
+
+	_, stderr, err := execCryptsetupCommand(
+		nil,
+		"--verbose",
+		"--key-file="+keyFile.Name(),
+		"luksKillSlot",
+		devicePath,
+		slot,
+	)
+	if err != nil {
+		// If a slot is not active, don't treat that as an error
+		if !strings.Contains(stderr, fmt.Sprintf("Keyslot %s is not active.", slot)) {
+			return fmt.Errorf("failed to kill slot %s for device %s: %w", slot, devicePath, err)
+		}
+	}
+
+	return nil
+}
+
+// LuksVerifyKey verifies that a key exists in a given slot.
+func LuksVerifyKey(devicePath, passphrase, slot string) (bool, error) {
+	// Create a temp file that we will use to open the device
+	keyFile, err := file.CreateTempFile("luks-", passphrase)
+	if err != nil {
+		return false, err
+	}
+	defer os.Remove(keyFile.Name())
+
+	_, stderr, err := execCryptsetupCommand(
+		nil,
+		"--verbose",
+		"--key-file="+keyFile.Name(),
+		"--key-slot="+slot,
+		"luksChangeKey",
+		devicePath,
+		keyFile.Name(),
+	)
+	if err != nil {
+		// If the passphrase doesn't match the key in given slot
+		if strings.Contains(stderr, "No key available with this passphrase.") {
+			// No match, no error
+			return false, nil
+		}
+
+		// Otherwise it was something else, return the wrapped error
+		log.ErrorLogMsg("failed to verify key in slot %s. stderr: %s. err: %v", slot, stderr, err)
+
+		return false, fmt.Errorf("failed to verify key in slot %s for device %s: %w", slot, devicePath, err)
+	}
+
+	return true, nil
+}
+
 func execCryptsetupCommand(stdin *string, args ...string) (string, string, error) {
 	var (
 		program       = "cryptsetup"

internal/util/file/file.go

@@ -0,0 +1,54 @@
+/*
+Copyright 2024 The Ceph-CSI 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 file
+
+import (
+	"fmt"
+	"os"
+)
+
+// CreateTempFile create a temporary file with the given string
+// content and returns the reference to the file.
+// The caller is responsible for disposing the file.
+func CreateTempFile(prefix, contents string) (*os.File, error) {
+	// Create a temp file
+	file, err := os.CreateTemp("", prefix)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create temporary file: %w", err)
+	}
+
+	// In case of error, remove the file if it was created
+	defer func() {
+		if err != nil {
+			_ = os.Remove(file.Name())
+		}
+	}()
+
+	// Write the contents
+	var c int
+	c, err = file.WriteString(contents)
+	if err != nil || c != len(contents) {
+		return nil, fmt.Errorf("failed to write temporary file: %w", err)
+	}
+
+	// Close the handle
+	if err = file.Close(); err != nil {
+		return nil, fmt.Errorf("failed to close temporary file: %w", err)
+	}
+
+	return file, nil
+}

internal/util/file/file_test.go

@@ -0,0 +1,100 @@
+/*
+Copyright 2024 The Ceph-CSI 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 file
+
+import (
+	"os"
+	"testing"
+)
+
+func TestCreateTempFile_WithValidContent(t *testing.T) {
+	t.Parallel()
+
+	content := "Valid Content"
+
+	file, err := CreateTempFile("test-", content)
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+	defer func() {
+		err = os.Remove(file.Name())
+		if err != nil {
+			t.Fatalf("Unexpected error: %v", err)
+		}
+	}()
+
+	readContent, err := os.ReadFile(file.Name())
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	if string(readContent) != content {
+		t.Fatalf("Content mismatch: got %v, want %v", string(readContent), content)
+	}
+}
+
+func TestCreateTempFile_WithEmptyContent(t *testing.T) {
+	t.Parallel()
+
+	content := ""
+
+	file, err := CreateTempFile("test-", content)
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+	defer func() {
+		err = os.Remove(file.Name())
+		if err != nil {
+			t.Fatalf("Unexpected error: %v", err)
+		}
+	}()
+
+	readContent, err := os.ReadFile(file.Name())
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	if string(readContent) != content {
+		t.Fatalf("Content mismatch: got %v, want %v", string(readContent), content)
+	}
+}
+
+func TestCreateTempFile_WithLargeContent(t *testing.T) {
+	t.Parallel()
+
+	content := string(make([]byte, 1<<20))
+
+	file, err := CreateTempFile("test-", content)
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+	defer func() {
+		err = os.Remove(file.Name())
+		if err != nil {
+			t.Fatalf("Unexpected error: %v", err)
+		}
+	}()
+
+	readContent, err := os.ReadFile(file.Name())
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	if string(readContent) != content {
+		t.Fatalf("Content mismatch: got %v, want %v", string(readContent), content)
+	}
+}

vendor/github.com/csi-addons/spec/lib/go/encryptionkeyrotation/encryptionkeyrotation.pb.go

@@ -0,0 +1,317 @@
+// Code generated by make; DO NOT EDIT.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.28.1
+// 	protoc        v3.20.2
+// source: encryptionkeyrotation/encryptionkeyrotation.proto
+
+package encryptionkeyrotation
+
+import (
+	csi "github.com/container-storage-interface/spec/lib/go/csi"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	_ "google.golang.org/protobuf/types/descriptorpb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// EncryptionKeyRotateRequest contains the information needed to identify
+// the volume by the SP and access any backend services so that the key can be
+// rotated.
+type EncryptionKeyRotateRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The ID of the volume for which the key is to be rotated.
+	// This field is required
+	VolumeId string `protobuf:"bytes,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	// The path where the volume is available.
+	// This field is OPTIONAL
+	// Useful if you are implementing the RPC on CSI Driver NodePlugin
+	VolumePath string `protobuf:"bytes,2,opt,name=volume_path,json=volumePath,proto3" json:"volume_path,omitempty"`
+	// Provide the encryption key to be set
+	// This field is OPTIONAL
+	EncryptionKey string `protobuf:"bytes,3,opt,name=encryption_key,json=encryptionKey,proto3" json:"encryption_key,omitempty"`
+	// Plugin specific parameters passed in as opaque key-value pairs.
+	Parameters map[string]string `protobuf:"bytes,4,rep,name=parameters,proto3" json:"parameters,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	// Secrets required by the plugin to complete the request.
+	Secrets map[string]string `protobuf:"bytes,5,rep,name=secrets,proto3" json:"secrets,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	// Volume capability describing how the CO intends to use this volume.
+	// This allows SP to determine if volume is being used as a block
+	// device or mounted file system. This is OPTIONAL.
+	VolumeCapability *csi.VolumeCapability `protobuf:"bytes,6,opt,name=volume_capability,json=volumeCapability,proto3" json:"volume_capability,omitempty"`
+}
+
+func (x *EncryptionKeyRotateRequest) Reset() {
+	*x = EncryptionKeyRotateRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *EncryptionKeyRotateRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*EncryptionKeyRotateRequest) ProtoMessage() {}
+
+func (x *EncryptionKeyRotateRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use EncryptionKeyRotateRequest.ProtoReflect.Descriptor instead.
+func (*EncryptionKeyRotateRequest) Descriptor() ([]byte, []int) {
+	return file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *EncryptionKeyRotateRequest) GetVolumeId() string {
+	if x != nil {
+		return x.VolumeId
+	}
+	return ""
+}
+
+func (x *EncryptionKeyRotateRequest) GetVolumePath() string {
+	if x != nil {
+		return x.VolumePath
+	}
+	return ""
+}
+
+func (x *EncryptionKeyRotateRequest) GetEncryptionKey() string {
+	if x != nil {
+		return x.EncryptionKey
+	}
+	return ""
+}
+
+func (x *EncryptionKeyRotateRequest) GetParameters() map[string]string {
+	if x != nil {
+		return x.Parameters
+	}
+	return nil
+}
+
+func (x *EncryptionKeyRotateRequest) GetSecrets() map[string]string {
+	if x != nil {
+		return x.Secrets
+	}
+	return nil
+}
+
+func (x *EncryptionKeyRotateRequest) GetVolumeCapability() *csi.VolumeCapability {
+	if x != nil {
+		return x.VolumeCapability
+	}
+	return nil
+}
+
+// EncryptionKeyRotateResponse holds the information about the result of the
+// EncryptionKeyRotateRequest call.
+type EncryptionKeyRotateResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *EncryptionKeyRotateResponse) Reset() {
+	*x = EncryptionKeyRotateResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *EncryptionKeyRotateResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*EncryptionKeyRotateResponse) ProtoMessage() {}
+
+func (x *EncryptionKeyRotateResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use EncryptionKeyRotateResponse.ProtoReflect.Descriptor instead.
+func (*EncryptionKeyRotateResponse) Descriptor() ([]byte, []int) {
+	return file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescGZIP(), []int{1}
+}
+
+var File_encryptionkeyrotation_encryptionkeyrotation_proto protoreflect.FileDescriptor
+
+var file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDesc = []byte{
+	0x0a, 0x31, 0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x6b, 0x65, 0x79, 0x72,
+	0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69,
+	0x6f, 0x6e, 0x6b, 0x65, 0x79, 0x72, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72,
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+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x6f, 0x6e, 0x74, 0x61, 0x69, 0x6e, 0x65, 0x72,
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+	0x73, 0x69, 0x2f, 0x63, 0x73, 0x69, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x20, 0x67, 0x6f,
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+	0x04, 0x0a, 0x1a, 0x45, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x4b, 0x65, 0x79,
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+	0x09, 0x76, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x5f, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09,
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+	0x74, 0x61, 0x74, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x39,
+	0x5a, 0x37, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x73, 0x69,
+	0x2d, 0x61, 0x64, 0x64, 0x6f, 0x6e, 0x73, 0x2f, 0x73, 0x70, 0x65, 0x63, 0x2f, 0x6c, 0x69, 0x62,
+	0x2f, 0x67, 0x6f, 0x2f, 0x65, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x6b, 0x65,
+	0x79, 0x72, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
+}
+
+var (
+	file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescOnce sync.Once
+	file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescData = file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDesc
+)
+
+func file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescGZIP() []byte {
+	file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescOnce.Do(func() {
+		file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescData = protoimpl.X.CompressGZIP(file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescData)
+	})
+	return file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDescData
+}
+
+var file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_encryptionkeyrotation_encryptionkeyrotation_proto_goTypes = []interface{}{
+	(*EncryptionKeyRotateRequest)(nil),  // 0: encryptionkeyrotation.EncryptionKeyRotateRequest
+	(*EncryptionKeyRotateResponse)(nil), // 1: encryptionkeyrotation.EncryptionKeyRotateResponse
+	nil,                                 // 2: encryptionkeyrotation.EncryptionKeyRotateRequest.ParametersEntry
+	nil,                                 // 3: encryptionkeyrotation.EncryptionKeyRotateRequest.SecretsEntry
+	(*csi.VolumeCapability)(nil),        // 4: csi.v1.VolumeCapability
+}
+var file_encryptionkeyrotation_encryptionkeyrotation_proto_depIdxs = []int32{
+	2, // 0: encryptionkeyrotation.EncryptionKeyRotateRequest.parameters:type_name -> encryptionkeyrotation.EncryptionKeyRotateRequest.ParametersEntry
+	3, // 1: encryptionkeyrotation.EncryptionKeyRotateRequest.secrets:type_name -> encryptionkeyrotation.EncryptionKeyRotateRequest.SecretsEntry
+	4, // 2: encryptionkeyrotation.EncryptionKeyRotateRequest.volume_capability:type_name -> csi.v1.VolumeCapability
+	0, // 3: encryptionkeyrotation.EncryptionKeyRotationController.EncryptionKeyRotate:input_type -> encryptionkeyrotation.EncryptionKeyRotateRequest
+	1, // 4: encryptionkeyrotation.EncryptionKeyRotationController.EncryptionKeyRotate:output_type -> encryptionkeyrotation.EncryptionKeyRotateResponse
+	4, // [4:5] is the sub-list for method output_type
+	3, // [3:4] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
+}
+
+func init() { file_encryptionkeyrotation_encryptionkeyrotation_proto_init() }
+func file_encryptionkeyrotation_encryptionkeyrotation_proto_init() {
+	if File_encryptionkeyrotation_encryptionkeyrotation_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*EncryptionKeyRotateRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*EncryptionKeyRotateResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   4,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_encryptionkeyrotation_encryptionkeyrotation_proto_goTypes,
+		DependencyIndexes: file_encryptionkeyrotation_encryptionkeyrotation_proto_depIdxs,
+		MessageInfos:      file_encryptionkeyrotation_encryptionkeyrotation_proto_msgTypes,
+	}.Build()
+	File_encryptionkeyrotation_encryptionkeyrotation_proto = out.File
+	file_encryptionkeyrotation_encryptionkeyrotation_proto_rawDesc = nil
+	file_encryptionkeyrotation_encryptionkeyrotation_proto_goTypes = nil
+	file_encryptionkeyrotation_encryptionkeyrotation_proto_depIdxs = nil
+}

vendor/github.com/csi-addons/spec/lib/go/encryptionkeyrotation/encryptionkeyrotation_grpc.pb.go

@@ -0,0 +1,116 @@
+// Code generated by make; DO NOT EDIT.
+
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.3.0
+// - protoc             v3.20.2
+// source: encryptionkeyrotation/encryptionkeyrotation.proto
+
+package encryptionkeyrotation
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+const (
+	EncryptionKeyRotationController_EncryptionKeyRotate_FullMethodName = "/encryptionkeyrotation.EncryptionKeyRotationController/EncryptionKeyRotate"
+)
+
+// EncryptionKeyRotationControllerClient is the client API for EncryptionKeyRotationController service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type EncryptionKeyRotationControllerClient interface {
+	// EncryptionKeyRotate is a procedure that is called
+	// on the CSI ControllerPlugin or NodePlugin
+	EncryptionKeyRotate(ctx context.Context, in *EncryptionKeyRotateRequest, opts ...grpc.CallOption) (*EncryptionKeyRotateResponse, error)
+}
+
+type encryptionKeyRotationControllerClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewEncryptionKeyRotationControllerClient(cc grpc.ClientConnInterface) EncryptionKeyRotationControllerClient {
+	return &encryptionKeyRotationControllerClient{cc}
+}
+
+func (c *encryptionKeyRotationControllerClient) EncryptionKeyRotate(ctx context.Context, in *EncryptionKeyRotateRequest, opts ...grpc.CallOption) (*EncryptionKeyRotateResponse, error) {
+	out := new(EncryptionKeyRotateResponse)
+	err := c.cc.Invoke(ctx, EncryptionKeyRotationController_EncryptionKeyRotate_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// EncryptionKeyRotationControllerServer is the server API for EncryptionKeyRotationController service.
+// All implementations must embed UnimplementedEncryptionKeyRotationControllerServer
+// for forward compatibility
+type EncryptionKeyRotationControllerServer interface {
+	// EncryptionKeyRotate is a procedure that is called
+	// on the CSI ControllerPlugin or NodePlugin
+	EncryptionKeyRotate(context.Context, *EncryptionKeyRotateRequest) (*EncryptionKeyRotateResponse, error)
+	mustEmbedUnimplementedEncryptionKeyRotationControllerServer()
+}
+
+// UnimplementedEncryptionKeyRotationControllerServer must be embedded to have forward compatible implementations.
+type UnimplementedEncryptionKeyRotationControllerServer struct {
+}
+
+func (UnimplementedEncryptionKeyRotationControllerServer) EncryptionKeyRotate(context.Context, *EncryptionKeyRotateRequest) (*EncryptionKeyRotateResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method EncryptionKeyRotate not implemented")
+}
+func (UnimplementedEncryptionKeyRotationControllerServer) mustEmbedUnimplementedEncryptionKeyRotationControllerServer() {
+}
+
+// UnsafeEncryptionKeyRotationControllerServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to EncryptionKeyRotationControllerServer will
+// result in compilation errors.
+type UnsafeEncryptionKeyRotationControllerServer interface {
+	mustEmbedUnimplementedEncryptionKeyRotationControllerServer()
+}
+
+func RegisterEncryptionKeyRotationControllerServer(s grpc.ServiceRegistrar, srv EncryptionKeyRotationControllerServer) {
+	s.RegisterService(&EncryptionKeyRotationController_ServiceDesc, srv)
+}
+
+func _EncryptionKeyRotationController_EncryptionKeyRotate_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(EncryptionKeyRotateRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(EncryptionKeyRotationControllerServer).EncryptionKeyRotate(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: EncryptionKeyRotationController_EncryptionKeyRotate_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(EncryptionKeyRotationControllerServer).EncryptionKeyRotate(ctx, req.(*EncryptionKeyRotateRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// EncryptionKeyRotationController_ServiceDesc is the grpc.ServiceDesc for EncryptionKeyRotationController service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var EncryptionKeyRotationController_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "encryptionkeyrotation.EncryptionKeyRotationController",
+	HandlerType: (*EncryptionKeyRotationControllerServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "EncryptionKeyRotate",
+			Handler:    _EncryptionKeyRotationController_EncryptionKeyRotate_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "encryptionkeyrotation/encryptionkeyrotation.proto",
+}

vendor/modules.txt

@@ -236,8 +236,9 @@ github.com/coreos/go-semver/semver
 ## explicit; go 1.12
 github.com/coreos/go-systemd/v22/daemon
 github.com/coreos/go-systemd/v22/journal
-# github.com/csi-addons/spec v0.2.1-0.20240627093359-0dd74d521e67
+# github.com/csi-addons/spec v0.2.1-0.20240718113938-dc98b454ba65
 ## explicit
+github.com/csi-addons/spec/lib/go/encryptionkeyrotation
 github.com/csi-addons/spec/lib/go/fence
 github.com/csi-addons/spec/lib/go/identity
 github.com/csi-addons/spec/lib/go/reclaimspace