multi: replace ioutil.WriteFile

cert/selfsigned.go

@@ -9,7 +9,6 @@ import (
 	"crypto/x509/pkix"
 	"encoding/pem"
 	"fmt"
-	"io/ioutil"
 	"math/big"
 	"net"
 	"os"
@@ -295,14 +294,14 @@ func GenCertPair(org string, tlsExtraIPs, tlsExtraDomains []string,
 func WriteCertPair(certFile, keyFile string, certBytes, keyBytes []byte) error {
 	// Write cert and key files.
 	if certFile != "" {
-		err := ioutil.WriteFile(certFile, certBytes, 0644)
+		err := os.WriteFile(certFile, certBytes, 0644)
 		if err != nil {
 			return err
 		}
 	}
 
 	if keyFile != "" {
-		err := ioutil.WriteFile(keyFile, keyBytes, 0600)
+		err := os.WriteFile(keyFile, keyBytes, 0600)
 		if err != nil {
 			os.Remove(certFile)
 			return err

cmd/lncli/cmd_macaroon.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"encoding/hex"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"os"
 	"strconv"
@@ -193,7 +192,7 @@ func bakeMacaroon(ctx *cli.Context) error {
 	// a file or write to the standard output using hex encoding.
 	switch {
 	case savePath != "":
-		err = ioutil.WriteFile(savePath, macBytes, 0644)
+		err = os.WriteFile(savePath, macBytes, 0644)
 		if err != nil {
 			return err
 		}
@@ -472,7 +471,7 @@ func constrainMacaroon(ctx *cli.Context) error {
 	}
 
 	// Now we can output the result.
-	err = ioutil.WriteFile(destMacFile, destMacBytes, 0644)
+	err = os.WriteFile(destMacFile, destMacBytes, 0644)
 	if err != nil {
 		return fmt.Errorf("error writing destination macaroon file "+
 			"%s: %v", destMacFile, err)

cmd/lncli/profile.go

@@ -6,7 +6,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"strings"
@@ -244,7 +243,8 @@ func saveProfileFile(file string, f *profileFile) error {
 	if err != nil {
 		return fmt.Errorf("could not marshal profile: %w", err)
 	}
-	return ioutil.WriteFile(file, content, 0644)
+
+	return os.WriteFile(file, content, 0644)
 }
 
 // profileFile is a struct that represents the whole content of a profile file.

internal/musig2v040/musig2_test.go

@@ -10,7 +10,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"sync"
 	"testing"
 
@@ -256,7 +256,7 @@ func TestMuSig2KeyAggTestVectors(t *testing.T) {
 
 		var formattedJson bytes.Buffer
 		json.Indent(&formattedJson, jsonBytes, "", "\t")
-		err = ioutil.WriteFile(
+		err = os.WriteFile(
 			keyAggTestVectorName, formattedJson.Bytes(), 0644,
 		)
 		if err != nil {
@@ -656,7 +656,7 @@ func TestMuSig2SigningTestVectors(t *testing.T) {
 
 		var formattedJson bytes.Buffer
 		json.Indent(&formattedJson, jsonBytes, "", "\t")
-		err = ioutil.WriteFile(
+		err = os.WriteFile(
 			signTestVectorName, formattedJson.Bytes(), 0644,
 		)
 		if err != nil {
@@ -1540,7 +1540,7 @@ func TestMusig2AggregateNoncesTestVectors(t *testing.T) {
 
 		var formattedJson bytes.Buffer
 		json.Indent(&formattedJson, jsonBytes, "", "\t")
-		err = ioutil.WriteFile(
+		err = os.WriteFile(
 			nonceAggTestVectorName, formattedJson.Bytes(), 0644,
 		)
 		if err != nil {

kvdb/backend.go

@@ -9,7 +9,6 @@ import (
 	"encoding/binary"
 	"encoding/hex"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"time"
@@ -235,7 +234,7 @@ func updateLastCompactionDate(dbFile string) error {
 	byteOrder.PutUint64(tsBytes[:], uint64(time.Now().UnixNano()))
 
 	tsFile := fmt.Sprintf("%s%s", dbFile, LastCompactionFileNameSuffix)
-	return ioutil.WriteFile(tsFile, tsBytes[:], 0600)
+	return os.WriteFile(tsFile, tsBytes[:], 0600)
 }
 
 // GetTestBackend opens (or creates if doesn't exist) a bbolt or etcd

lnrpc/chainrpc/chain_server.go

@@ -7,7 +7,6 @@ import (
 	"bytes"
 	"context"
 	"errors"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sync"
@@ -153,7 +152,7 @@ func New(cfg *Config) (*Server, lnrpc.MacaroonPerms, error) {
 		if err != nil {
 			return nil, nil, err
 		}
-		err = ioutil.WriteFile(macFilePath, chainNotifierMacBytes, 0644)
+		err = os.WriteFile(macFilePath, chainNotifierMacBytes, 0644)
 		if err != nil {
 			_ = os.Remove(macFilePath)
 			return nil, nil, err

lnrpc/invoicesrpc/invoices_server.go

@@ -7,7 +7,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -132,7 +131,7 @@ func New(cfg *Config) (*Server, lnrpc.MacaroonPerms, error) {
 		if err != nil {
 			return nil, nil, err
 		}
-		err = ioutil.WriteFile(macFilePath, invoicesMacBytes, 0644)
+		err = os.WriteFile(macFilePath, invoicesMacBytes, 0644)
 		if err != nil {
 			_ = os.Remove(macFilePath)
 			return nil, nil, err

lnrpc/routerrpc/router_server.go

@@ -6,7 +6,6 @@ import (
 	crand "crypto/rand"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sync/atomic"
@@ -216,7 +215,7 @@ func New(cfg *Config) (*Server, lnrpc.MacaroonPerms, error) {
 		if err != nil {
 			return nil, nil, err
 		}
-		err = ioutil.WriteFile(macFilePath, routerMacBytes, 0644)
+		err = os.WriteFile(macFilePath, routerMacBytes, 0644)
 		if err != nil {
 			_ = os.Remove(macFilePath)
 			return nil, nil, err

lnrpc/signrpc/signer_server.go

@@ -8,7 +8,6 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -167,7 +166,7 @@ func New(cfg *Config) (*Server, lnrpc.MacaroonPerms, error) {
 		if err != nil {
 			return nil, nil, err
 		}
-		err = ioutil.WriteFile(macFilePath, signerMacBytes, 0644)
+		err = os.WriteFile(macFilePath, signerMacBytes, 0644)
 		if err != nil {
 			_ = os.Remove(macFilePath)
 			return nil, nil, err

lnrpc/walletrpc/walletkit_server.go

@@ -10,7 +10,6 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"math"
 	"os"
 	"path/filepath"
@@ -289,7 +288,7 @@ func New(cfg *Config) (*WalletKit, lnrpc.MacaroonPerms, error) {
 		if err != nil {
 			return nil, nil, err
 		}
-		err = ioutil.WriteFile(macFilePath, walletKitMacBytes, 0644)
+		err = os.WriteFile(macFilePath, walletKitMacBytes, 0644)
 		if err != nil {
 			_ = os.Remove(macFilePath)
 			return nil, nil, err

tls_manager.go

@@ -7,7 +7,6 @@ import (
 	"crypto/x509"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"os"
@@ -279,7 +278,7 @@ func (t *TLSManager) ensureEncryption(keyRing keychain.SecretKeyRing) error {
 		if err != nil {
 			return err
 		}
-		err = ioutil.WriteFile(
+		err = os.WriteFile(
 			t.cfg.TLSKeyPath, b.Bytes(), modifyFilePermissions,
 		)
 		if err != nil {

tls_manager_test.go

@@ -9,7 +9,6 @@ import (
 	"crypto/x509"
 	"crypto/x509/pkix"
 	"encoding/pem"
-	"io/ioutil"
 	"math/big"
 	"net"
 	"os"
@@ -351,9 +350,9 @@ func writeTestCertFiles(t *testing.T, expiredCert, encryptTLSKey bool,
 		require.NoError(t, err, "failed to encrypt private key")
 	}
 
-	err = ioutil.WriteFile(tempDir+"/tls.cert", certBuf.Bytes(), 0644)
+	err = os.WriteFile(tempDir+"/tls.cert", certBuf.Bytes(), 0644)
 	require.NoError(t, err, "failed to write cert file")
-	err = ioutil.WriteFile(tempDir+"/tls.key", keyBuf.Bytes(), 0600)
+	err = os.WriteFile(tempDir+"/tls.key", keyBuf.Bytes(), 0600)
 	require.NoError(t, err, "failed to write key file")
 
 	return certPath, keyPath, parsedCert

tor/cmd_onion.go

@@ -5,7 +5,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 )
 
@@ -105,7 +104,7 @@ func (f *OnionFile) StorePrivateKey(privateKey []byte) error {
 		privateKeyContent = b.Bytes()
 	}
 
-	err := ioutil.WriteFile(
+	err := os.WriteFile(
 		f.privateKeyPath, privateKeyContent, f.privateKeyPerm,
 	)
 	if err != nil {