chore: use gofumpt for code formatting

internal/wireguard/address.go

@@ -8,7 +8,8 @@ import (
 )
 
 func (w *Wireguard) addAddresses(link netlink.Link,
-	addresses []netip.Prefix) (err error) {
+	addresses []netip.Prefix,
+) (err error) {
 	for _, ipNet := range addresses {
 		if !*w.settings.IPv6 && ipNet.Addr().Is6() {
 			continue

internal/wireguard/cleanup.go

@@ -12,7 +12,8 @@ type closer struct {
 type closers []closer
 
 func (c *closers) add(operation string, step step,
-	closeFunc func() error) {
+	closeFunc func() error,
+) {
 	closer := closer{
 		operation: operation,
 		step:      step,

internal/wireguard/constructor.go

@@ -7,7 +7,8 @@ type Wireguard struct {
 }
 
 func New(settings Settings, netlink NetLinker,
-	logger Logger) (w *Wireguard, err error) {
+	logger Logger,
+) (w *Wireguard, err error) {
 	settings.SetDefaults()
 	if err := settings.Check(); err != nil {
 		return nil, err

internal/wireguard/route.go

@@ -9,7 +9,8 @@ import (
 )
 
 func (w *Wireguard) addRoutes(link netlink.Link, destinations []netip.Prefix,
-	firewallMark uint32) (err error) {
+	firewallMark uint32,
+) (err error) {
 	for _, dst := range destinations {
 		err = w.addRoute(link, dst, firewallMark)
 		if err == nil {
@@ -29,7 +30,8 @@ func (w *Wireguard) addRoutes(link netlink.Link, destinations []netip.Prefix,
 }
 
 func (w *Wireguard) addRoute(link netlink.Link, dst netip.Prefix,
-	firewallMark uint32) (err error) {
+	firewallMark uint32,
+) (err error) {
 	route := netlink.Route{
 		LinkIndex: link.Index,
 		Dst:       dst,

internal/wireguard/rule.go

@@ -7,7 +7,8 @@ import (
 )
 
 func (w *Wireguard) addRule(rulePriority int, firewallMark uint32,
-	family int) (cleanup func() error, err error) {
+	family int,
+) (cleanup func() error, err error) {
 	rule := netlink.NewRule()
 	rule.Invert = true
 	rule.Priority = rulePriority

internal/wireguard/run.go

@@ -140,7 +140,8 @@ type waitAndCleanupFunc func() error
 func setupKernelSpace(ctx context.Context,
 	interfaceName string, netLinker NetLinker, mtu uint16,
 	closers *closers, logger Logger) (
-	link netlink.Link, waitAndCleanup waitAndCleanupFunc, err error) {
+	link netlink.Link, waitAndCleanup waitAndCleanupFunc, err error,
+) {
 	link = netlink.Link{
 		Type: "wireguard",
 		Name: interfaceName,
@@ -184,7 +185,8 @@ func setupKernelSpace(ctx context.Context,
 func setupUserSpace(ctx context.Context,
 	interfaceName string, netLinker NetLinker, mtu uint16,
 	closers *closers, logger Logger) (
-	link netlink.Link, waitAndCleanup waitAndCleanupFunc, err error) {
+	link netlink.Link, waitAndCleanup waitAndCleanupFunc, err error,
+) {
 	tun, err := tun.CreateTUN(interfaceName, int(mtu))
 	if err != nil {
 		return link, nil, fmt.Errorf("%w: %s", ErrCreateTun, err)
@@ -258,7 +260,8 @@ func setupUserSpace(ctx context.Context,
 }
 
 func acceptAndHandle(uapi net.Listener, device *device.Device,
-	uapiAcceptErrorCh chan<- error) {
+	uapiAcceptErrorCh chan<- error,
+) {
 	for { // stopped by uapiFile.Close()
 		conn, err := uapi.Accept()
 		if err != nil {