all: Unused parameter should be replaced by underscore (#8464)

Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>

cmd/stdiscosrv/apisrv.go

@@ -68,7 +68,7 @@ func newAPISrv(addr string, cert tls.Certificate, db database, repl replicator,
 	}
 }
 
-func (s *apiSrv) Serve(ctx context.Context) error {
+func (s *apiSrv) Serve(_ context.Context) error {
 	if s.useHTTP {
 		listener, err := net.Listen("tcp", s.addr)
 		if err != nil {
@@ -302,7 +302,7 @@ func (s *apiSrv) handleAnnounce(deviceID protocol.DeviceID, addresses []string)
 	return s.db.merge(key, dbAddrs, seen)
 }
 
-func handlePing(w http.ResponseWriter, r *http.Request) {
+func handlePing(w http.ResponseWriter, _ *http.Request) {
 	w.WriteHeader(204)
 }
 

cmd/stdiscosrv/replication.go

@@ -135,7 +135,7 @@ func (s *replicationSender) String() string {
 	return fmt.Sprintf("replicationSender(%q)", s.dst)
 }
 
-func (s *replicationSender) send(key string, ps []DatabaseAddress, seen int64) {
+func (s *replicationSender) send(key string, ps []DatabaseAddress, _ int64) {
 	item := ReplicationRecord{
 		Key:       key,
 		Addresses: ps,

cmd/strelaysrv/listener.go

@@ -23,7 +23,7 @@ var (
 	numConnections int64
 )
 
-func listener(proto, addr string, config *tls.Config) {
+func listener(_, addr string, config *tls.Config) {
 	tcpListener, err := net.Listen("tcp", addr)
 	if err != nil {
 		log.Fatalln(err)

cmd/strelaysrv/status.go

@@ -36,7 +36,7 @@ func statusService(addr string) {
 	}
 }
 
-func getStatus(w http.ResponseWriter, r *http.Request) {
+func getStatus(w http.ResponseWriter, _ *http.Request) {
 	w.Header().Set("Access-Control-Allow-Origin", "*")
 	status := make(map[string]interface{})
 

cmd/syncthing/cli/config.go

@@ -60,7 +60,7 @@ func (h *configHandler) configBefore(c *cli.Context) error {
 	return h.err
 }
 
-func (h *configHandler) configAfter(c *cli.Context) error {
+func (h *configHandler) configAfter(_ *cli.Context) error {
 	if h.err != nil {
 		// Error was already returned in configBefore
 		return nil

cmd/ursrv/main.go

@@ -284,7 +284,7 @@ func rootHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func locationsHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
+func locationsHandler(db *sql.DB, w http.ResponseWriter, _ *http.Request) {
 	cacheMut.Lock()
 	defer cacheMut.Unlock()
 
@@ -377,7 +377,7 @@ func summaryHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
 	w.Write(bs)
 }
 
-func movementHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
+func movementHandler(db *sql.DB, w http.ResponseWriter, _ *http.Request) {
 	s, err := getMovement(db)
 	if err != nil {
 		log.Println("movementHandler:", err)
@@ -396,7 +396,7 @@ func movementHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
 	w.Write(bs)
 }
 
-func performanceHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
+func performanceHandler(db *sql.DB, w http.ResponseWriter, _ *http.Request) {
 	s, err := getPerformance(db)
 	if err != nil {
 		log.Println("performanceHandler:", err)
@@ -415,7 +415,7 @@ func performanceHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
 	w.Write(bs)
 }
 
-func blockStatsHandler(db *sql.DB, w http.ResponseWriter, r *http.Request) {
+func blockStatsHandler(db *sql.DB, w http.ResponseWriter, _ *http.Request) {
 	s, err := getBlockStats(db)
 	if err != nil {
 		log.Println("blockStatsHandler:", err)

lib/connections/quic_listen.go

@@ -218,7 +218,7 @@ func (f *quicListenerFactory) Valid(config.Configuration) error {
 	return nil
 }
 
-func (f *quicListenerFactory) New(uri *url.URL, cfg config.Wrapper, tlsCfg *tls.Config, conns chan internalConn, natService *nat.Service, registry *registry.Registry) genericListener {
+func (f *quicListenerFactory) New(uri *url.URL, cfg config.Wrapper, tlsCfg *tls.Config, conns chan internalConn, _ *nat.Service, registry *registry.Registry) genericListener {
 	l := &quicListener{
 		uri:      fixupPort(uri, config.DefaultQUICPort),
 		cfg:      cfg,
@@ -232,6 +232,6 @@ func (f *quicListenerFactory) New(uri *url.URL, cfg config.Wrapper, tlsCfg *tls.
 	return l
 }
 
-func (quicListenerFactory) Enabled(cfg config.Configuration) bool {
+func (quicListenerFactory) Enabled(_ config.Configuration) bool {
 	return true
 }

lib/connections/relay_listen.go

@@ -178,7 +178,7 @@ func (t *relayListener) NATType() string {
 
 type relayListenerFactory struct{}
 
-func (f *relayListenerFactory) New(uri *url.URL, cfg config.Wrapper, tlsCfg *tls.Config, conns chan internalConn, natService *nat.Service, _ *registry.Registry) genericListener {
+func (f *relayListenerFactory) New(uri *url.URL, cfg config.Wrapper, tlsCfg *tls.Config, conns chan internalConn, _ *nat.Service, _ *registry.Registry) genericListener {
 	t := &relayListener{
 		uri:     uri,
 		cfg:     cfg,

lib/db/schemaupdater.go

@@ -519,7 +519,7 @@ func (db *schemaUpdater) updateSchema6to7(_ int) error {
 	return t.Commit()
 }
 
-func (db *schemaUpdater) updateSchemaTo9(prev int) error {
+func (db *schemaUpdater) updateSchemaTo9(_ int) error {
 	// Loads and rewrites all files with blocks, to deduplicate block lists.
 
 	t, err := db.newReadWriteTransaction()

lib/discover/cache_test.go

@@ -79,7 +79,7 @@ type fakeDiscovery struct {
 	addresses []string
 }
 
-func (f *fakeDiscovery) Lookup(_ context.Context, deviceID protocol.DeviceID) (addresses []string, err error) {
+func (f *fakeDiscovery) Lookup(_ context.Context, _ protocol.DeviceID) (addresses []string, err error) {
 	return f.addresses, nil
 }
 
@@ -127,7 +127,7 @@ type slowDiscovery struct {
 	started chan struct{}
 }
 
-func (f *slowDiscovery) Lookup(_ context.Context, deviceID protocol.DeviceID) (addresses []string, err error) {
+func (f *slowDiscovery) Lookup(_ context.Context, _ protocol.DeviceID) (addresses []string, err error) {
 	close(f.started)
 	time.Sleep(f.delay)
 	return nil, nil

lib/events/events.go

@@ -551,11 +551,11 @@ type noopLogger struct{}
 
 var NoopLogger Logger = &noopLogger{}
 
-func (*noopLogger) Serve(ctx context.Context) error { return nil }
+func (*noopLogger) Serve(_ context.Context) error { return nil }
 
-func (*noopLogger) Log(t EventType, data interface{}) {}
+func (*noopLogger) Log(_ EventType, _ interface{}) {}
 
-func (*noopLogger) Subscribe(mask EventType) Subscription {
+func (*noopLogger) Subscribe(_ EventType) Subscription {
 	return &noopSubscription{}
 }
 
@@ -565,7 +565,7 @@ func (*noopSubscription) C() <-chan Event {
 	return nil
 }
 
-func (*noopSubscription) Poll(timeout time.Duration) (Event, error) {
+func (*noopSubscription) Poll(_ time.Duration) (Event, error) {
 	return Event{}, errNoop
 }
 

lib/fs/basicfs.go

@@ -265,7 +265,7 @@ func (f *BasicFilesystem) Create(name string) (File, error) {
 	return basicFile{fd, name}, err
 }
 
-func (f *BasicFilesystem) Walk(root string, walkFn WalkFunc) error {
+func (f *BasicFilesystem) Walk(_ string, _ WalkFunc) error {
 	// implemented in WalkFilesystem
 	return errors.New("not implemented")
 }

lib/fs/errorfs.go

@@ -19,42 +19,42 @@ type errorFilesystem struct {
 	uri    string
 }
 
-func (fs *errorFilesystem) Chmod(name string, mode FileMode) error { return fs.err }
+func (fs *errorFilesystem) Chmod(_ string, _ FileMode) error { return fs.err }
-func (fs *errorFilesystem) Lchown(name, uid, gid string) error     { return fs.err }
+func (fs *errorFilesystem) Lchown(_, _, _ string) error      { return fs.err }
-func (fs *errorFilesystem) Chtimes(name string, atime time.Time, mtime time.Time) error {
+func (fs *errorFilesystem) Chtimes(_ string, _ time.Time, _ time.Time) error {
 	return fs.err
 }
-func (fs *errorFilesystem) Create(name string) (File, error)             { return nil, fs.err }
+func (fs *errorFilesystem) Create(_ string) (File, error)                { return nil, fs.err }
-func (fs *errorFilesystem) CreateSymlink(target, name string) error      { return fs.err }
+func (fs *errorFilesystem) CreateSymlink(_, _ string) error              { return fs.err }
-func (fs *errorFilesystem) DirNames(name string) ([]string, error)       { return nil, fs.err }
+func (fs *errorFilesystem) DirNames(_ string) ([]string, error)          { return nil, fs.err }
-func (fs *errorFilesystem) Lstat(name string) (FileInfo, error)          { return nil, fs.err }
+func (fs *errorFilesystem) Lstat(_ string) (FileInfo, error)             { return nil, fs.err }
-func (fs *errorFilesystem) Mkdir(name string, perm FileMode) error       { return fs.err }
+func (fs *errorFilesystem) Mkdir(_ string, _ FileMode) error             { return fs.err }
-func (fs *errorFilesystem) MkdirAll(name string, perm FileMode) error    { return fs.err }
+func (fs *errorFilesystem) MkdirAll(_ string, _ FileMode) error          { return fs.err }
-func (fs *errorFilesystem) Open(name string) (File, error)               { return nil, fs.err }
+func (fs *errorFilesystem) Open(_ string) (File, error)                  { return nil, fs.err }
 func (fs *errorFilesystem) OpenFile(string, int, FileMode) (File, error) { return nil, fs.err }
-func (fs *errorFilesystem) ReadSymlink(name string) (string, error)      { return "", fs.err }
+func (fs *errorFilesystem) ReadSymlink(_ string) (string, error)         { return "", fs.err }
-func (fs *errorFilesystem) Remove(name string) error                     { return fs.err }
+func (fs *errorFilesystem) Remove(_ string) error                        { return fs.err }
-func (fs *errorFilesystem) RemoveAll(name string) error                  { return fs.err }
+func (fs *errorFilesystem) RemoveAll(_ string) error                     { return fs.err }
-func (fs *errorFilesystem) Rename(oldname, newname string) error         { return fs.err }
+func (fs *errorFilesystem) Rename(_, _ string) error                     { return fs.err }
-func (fs *errorFilesystem) Stat(name string) (FileInfo, error)           { return nil, fs.err }
+func (fs *errorFilesystem) Stat(_ string) (FileInfo, error)              { return nil, fs.err }
 func (fs *errorFilesystem) SymlinksSupported() bool                      { return false }
-func (fs *errorFilesystem) Walk(root string, walkFn WalkFunc) error      { return fs.err }
+func (fs *errorFilesystem) Walk(_ string, _ WalkFunc) error              { return fs.err }
-func (fs *errorFilesystem) Unhide(name string) error                     { return fs.err }
+func (fs *errorFilesystem) Unhide(_ string) error                        { return fs.err }
-func (fs *errorFilesystem) Hide(name string) error                       { return fs.err }
+func (fs *errorFilesystem) Hide(_ string) error                          { return fs.err }
-func (fs *errorFilesystem) Glob(pattern string) ([]string, error)        { return nil, fs.err }
+func (fs *errorFilesystem) Glob(_ string) ([]string, error)              { return nil, fs.err }
-func (fs *errorFilesystem) SyncDir(name string) error                    { return fs.err }
+func (fs *errorFilesystem) SyncDir(_ string) error                       { return fs.err }
 func (fs *errorFilesystem) Roots() ([]string, error)                     { return nil, fs.err }
-func (fs *errorFilesystem) Usage(name string) (Usage, error)             { return Usage{}, fs.err }
+func (fs *errorFilesystem) Usage(_ string) (Usage, error)                { return Usage{}, fs.err }
 func (fs *errorFilesystem) Type() FilesystemType                         { return fs.fsType }
 func (fs *errorFilesystem) URI() string                                  { return fs.uri }
 func (fs *errorFilesystem) Options() []Option {
 	return nil
 }
-func (fs *errorFilesystem) SameFile(fi1, fi2 FileInfo) bool { return false }
+func (fs *errorFilesystem) SameFile(_, _ FileInfo) bool { return false }
-func (fs *errorFilesystem) Watch(path string, ignore Matcher, ctx context.Context, ignorePerms bool) (<-chan Event, <-chan error, error) {
+func (fs *errorFilesystem) Watch(_ string, _ Matcher, _ context.Context, _ bool) (<-chan Event, <-chan error, error) {
 	return nil, nil, fs.err
 }
-func (fs *errorFilesystem) PlatformData(name string) (protocol.PlatformData, error) {
+func (fs *errorFilesystem) PlatformData(_ string) (protocol.PlatformData, error) {
 	return protocol.PlatformData{}, fs.err
 }
 

lib/fs/fakefs.go

@@ -235,7 +235,7 @@ func (fs *fakeFS) Lchown(name, uid, gid string) error {
 	return nil
 }
 
-func (fs *fakeFS) Chtimes(name string, atime time.Time, mtime time.Time) error {
+func (fs *fakeFS) Chtimes(name string, _ time.Time, mtime time.Time) error {
 	fs.mut.Lock()
 	defer fs.mut.Unlock()
 	fs.counters.Chtimes++
@@ -601,23 +601,23 @@ func (fs *fakeFS) SymlinksSupported() bool {
 	return false
 }
 
-func (fs *fakeFS) Walk(name string, walkFn WalkFunc) error {
+func (fs *fakeFS) Walk(_ string, _ WalkFunc) error {
 	return errors.New("not implemented")
 }
 
-func (fs *fakeFS) Watch(path string, ignore Matcher, ctx context.Context, ignorePerms bool) (<-chan Event, <-chan error, error) {
+func (fs *fakeFS) Watch(_ string, _ Matcher, _ context.Context, _ bool) (<-chan Event, <-chan error, error) {
 	return nil, nil, ErrWatchNotSupported
 }
 
-func (fs *fakeFS) Hide(name string) error {
+func (fs *fakeFS) Hide(_ string) error {
 	return nil
 }
 
-func (fs *fakeFS) Unhide(name string) error {
+func (fs *fakeFS) Unhide(_ string) error {
 	return nil
 }
 
-func (fs *fakeFS) Glob(pattern string) ([]string, error) {
+func (fs *fakeFS) Glob(_ string) ([]string, error) {
 	// gnnh we don't seem to actually require this in practice
 	return nil, errors.New("not implemented")
 }
@@ -626,7 +626,7 @@ func (fs *fakeFS) Roots() ([]string, error) {
 	return []string{"/"}, nil
 }
 
-func (fs *fakeFS) Usage(name string) (Usage, error) {
+func (fs *fakeFS) Usage(_ string) (Usage, error) {
 	return Usage{}, errors.New("not implemented")
 }
 

lib/fs/mtimefs_test.go

@@ -245,7 +245,7 @@ func (s mapStore) Delete(key string) error {
 }
 
 // failChtimes does nothing, and fails
-func failChtimes(name string, mtime, atime time.Time) error {
+func failChtimes(_ string, _, _ time.Time) error {
 	return errors.New("no")
 }
 

lib/model/model.go

@@ -1806,7 +1806,7 @@ func (r *requestResponse) Wait() {
 
 // Request returns the specified data segment by reading it from local disk.
 // Implements the protocol.Model interface.
-func (m *model) Request(deviceID protocol.DeviceID, folder, name string, blockNo, size int32, offset int64, hash []byte, weakHash uint32, fromTemporary bool) (out protocol.RequestResponse, err error) {
+func (m *model) Request(deviceID protocol.DeviceID, folder, name string, _, size int32, offset int64, hash []byte, weakHash uint32, fromTemporary bool) (out protocol.RequestResponse, err error) {
 	if size < 0 || offset < 0 {
 		return nil, protocol.ErrInvalid
 	}

lib/nat/service.go

@@ -45,7 +45,7 @@ func NewService(id protocol.DeviceID, cfg config.Wrapper) *Service {
 	return s
 }
 
-func (s *Service) CommitConfiguration(from, to config.Configuration) bool {
+func (s *Service) CommitConfiguration(_, to config.Configuration) bool {
 	s.mut.Lock()
 	if !s.enabled && to.Options.NATEnabled {
 		l.Debugln("Starting NAT service")

lib/pmp/pmp.go

@@ -97,7 +97,7 @@ func (w *wrapper) GetLocalIPAddress() net.IP {
 	return w.localIP
 }
 
-func (w *wrapper) AddPortMapping(ctx context.Context, protocol nat.Protocol, internalPort, externalPort int, description string, duration time.Duration) (int, error) {
+func (w *wrapper) AddPortMapping(ctx context.Context, protocol nat.Protocol, internalPort, externalPort int, _ string, duration time.Duration) (int, error) {
 	// NAT-PMP says that if duration is 0, the mapping is actually removed
 	// Swap the zero with the renewal value, which should make the lease for the
 	// exact amount of time between the calls.

lib/protocol/benchmark_test.go

@@ -167,15 +167,15 @@ func negotiateTLS(cert tls.Certificate, conn0, conn1 net.Conn) (net.Conn, net.Co
 
 type fakeModel struct{}
 
-func (m *fakeModel) Index(deviceID DeviceID, folder string, files []FileInfo) error {
+func (m *fakeModel) Index(_ DeviceID, _ string, _ []FileInfo) error {
 	return nil
 }
 
-func (m *fakeModel) IndexUpdate(deviceID DeviceID, folder string, files []FileInfo) error {
+func (m *fakeModel) IndexUpdate(_ DeviceID, _ string, _ []FileInfo) error {
 	return nil
 }
 
-func (m *fakeModel) Request(deviceID DeviceID, folder, name string, blockNo, size int32, offset int64, hash []byte, weakHash uint32, fromTemporary bool) (RequestResponse, error) {
+func (m *fakeModel) Request(_ DeviceID, _, _ string, _, size int32, offset int64, _ []byte, _ uint32, _ bool) (RequestResponse, error) {
 	// We write the offset to the end of the buffer, so the receiver
 	// can verify that it did in fact get some data back over the
 	// connection.
@@ -184,13 +184,13 @@ func (m *fakeModel) Request(deviceID DeviceID, folder, name string, blockNo, siz
 	return &fakeRequestResponse{buf}, nil
 }
 
-func (m *fakeModel) ClusterConfig(deviceID DeviceID, config ClusterConfig) error {
+func (m *fakeModel) ClusterConfig(_ DeviceID, _ ClusterConfig) error {
 	return nil
 }
 
 func (m *fakeModel) Closed(DeviceID, error) {
 }
 
-func (m *fakeModel) DownloadProgress(deviceID DeviceID, folder string, updates []FileDownloadProgressUpdate) error {
+func (m *fakeModel) DownloadProgress(_ DeviceID, _ string, _ []FileDownloadProgressUpdate) error {
 	return nil
 }

lib/protocol/common_test.go

@@ -32,11 +32,11 @@ func (t *TestModel) Index(deviceID DeviceID, folder string, files []FileInfo) er
 	return nil
 }
 
-func (t *TestModel) IndexUpdate(deviceID DeviceID, folder string, files []FileInfo) error {
+func (t *TestModel) IndexUpdate(_ DeviceID, _ string, _ []FileInfo) error {
 	return nil
 }
 
-func (t *TestModel) Request(deviceID DeviceID, folder, name string, blockNo, size int32, offset int64, hash []byte, weakHash uint32, fromTemporary bool) (RequestResponse, error) {
+func (t *TestModel) Request(_ DeviceID, folder, name string, _, size int32, offset int64, hash []byte, weakHash uint32, fromTemporary bool) (RequestResponse, error) {
 	t.folder = folder
 	t.name = name
 	t.offset = offset

lib/relay/protocol/packets_xdr.go

@@ -89,15 +89,15 @@ func (o Ping) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o Ping) MarshalXDRInto(m *xdr.Marshaller) error {
+func (o Ping) MarshalXDRInto(_ *xdr.Marshaller) error {
 	return nil
 }
 
-func (o *Ping) UnmarshalXDR(bs []byte) error {
+func (o *Ping) UnmarshalXDR(_ []byte) error {
 	return nil
 }
 
-func (o *Ping) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+func (o *Ping) UnmarshalXDRFrom(_ *xdr.Unmarshaller) error {
 	return nil
 }
 
@@ -123,15 +123,15 @@ func (o Pong) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o Pong) MarshalXDRInto(m *xdr.Marshaller) error {
+func (o Pong) MarshalXDRInto(_ *xdr.Marshaller) error {
 	return nil
 }
 
-func (o *Pong) UnmarshalXDR(bs []byte) error {
+func (o *Pong) UnmarshalXDR(_ []byte) error {
 	return nil
 }
 
-func (o *Pong) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+func (o *Pong) UnmarshalXDRFrom(_ *xdr.Unmarshaller) error {
 	return nil
 }
 
@@ -157,15 +157,15 @@ func (o JoinRelayRequest) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o JoinRelayRequest) MarshalXDRInto(m *xdr.Marshaller) error {
+func (o JoinRelayRequest) MarshalXDRInto(_ *xdr.Marshaller) error {
 	return nil
 }
 
-func (o *JoinRelayRequest) UnmarshalXDR(bs []byte) error {
+func (o *JoinRelayRequest) UnmarshalXDR(_ []byte) error {
 	return nil
 }
 
-func (o *JoinRelayRequest) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+func (o *JoinRelayRequest) UnmarshalXDRFrom(_ *xdr.Unmarshaller) error {
 	return nil
 }
 
@@ -191,15 +191,15 @@ func (o RelayFull) MustMarshalXDR() []byte {
 	return nil
 }
 
-func (o RelayFull) MarshalXDRInto(m *xdr.Marshaller) error {
+func (o RelayFull) MarshalXDRInto(_ *xdr.Marshaller) error {
 	return nil
 }
 
-func (o *RelayFull) UnmarshalXDR(bs []byte) error {
+func (o *RelayFull) UnmarshalXDR(_ []byte) error {
 	return nil
 }
 
-func (o *RelayFull) UnmarshalXDRFrom(u *xdr.Unmarshaller) error {
+func (o *RelayFull) UnmarshalXDRFrom(_ *xdr.Unmarshaller) error {
 	return nil
 }
 

lib/scanner/blocks.go

@@ -139,4 +139,4 @@ func (noopHash) Write([]byte) (int, error) { return 0, nil }
 
 type noopCounter struct{}
 
-func (c *noopCounter) Update(bytes int64) {}
+func (c *noopCounter) Update(_ int64) {}

lib/scanner/virtualfs_test.go

@@ -55,7 +55,7 @@ func (i infiniteFS) Open(name string) (fs.File, error) {
 	return &fakeFile{name, i.filesize, 0}, nil
 }
 
-func (i infiniteFS) PlatformData(name string) (protocol.PlatformData, error) {
+func (i infiniteFS) PlatformData(_ string) (protocol.PlatformData, error) {
 	return protocol.PlatformData{}, nil
 }
 
@@ -105,7 +105,7 @@ func (s singleFileFS) Options() []fs.Option {
 	return nil
 }
 
-func (s singleFileFS) PlatformData(name string) (protocol.PlatformData, error) {
+func (s singleFileFS) PlatformData(_ string) (protocol.PlatformData, error) {
 	return protocol.PlatformData{}, nil
 }
 
@@ -156,7 +156,7 @@ func (f *fakeFile) Stat() (fs.FileInfo, error) {
 func (f *fakeFile) Write([]byte) (int, error)          { return 0, errNotSupp }
 func (f *fakeFile) WriteAt([]byte, int64) (int, error) { return 0, errNotSupp }
 func (f *fakeFile) Close() error                       { return nil }
-func (f *fakeFile) Truncate(size int64) error          { return errNotSupp }
+func (f *fakeFile) Truncate(_ int64) error             { return errNotSupp }
 func (f *fakeFile) ReadAt([]byte, int64) (int, error)  { return 0, errNotSupp }
 func (f *fakeFile) Seek(int64, int) (int64, error)     { return 0, errNotSupp }
 func (f *fakeFile) Sync() error                        { return nil }

lib/scanner/walk.go

@@ -662,7 +662,7 @@ func (c *byteCounter) Close() {
 
 type noCurrentFiler struct{}
 
-func (noCurrentFiler) CurrentFile(name string) (protocol.FileInfo, bool) {
+func (noCurrentFiler) CurrentFile(_ string) (protocol.FileInfo, bool) {
 	return protocol.FileInfo{}, false
 }
 

lib/scanner/walk_test.go

@@ -310,7 +310,7 @@ func TestNormalizationDarwinCaseFS(t *testing.T) {
 	}
 }
 
-func TestIssue1507(t *testing.T) {
+func TestIssue1507(_ *testing.T) {
 	w := &walker{}
 	w.Matcher = ignore.New(w.Filesystem)
 	h := make(chan protocol.FileInfo, 100)

lib/stun/filter.go

@@ -23,7 +23,7 @@ type stunFilter struct {
 	mut sync.Mutex
 }
 
-func (f *stunFilter) Outgoing(out []byte, addr net.Addr) {
+func (f *stunFilter) Outgoing(out []byte, _ net.Addr) {
 	if !f.isStunPayload(out) {
 		panic("not a stun payload")
 	}
@@ -33,7 +33,7 @@ func (f *stunFilter) Outgoing(out []byte, addr net.Addr) {
 	f.mut.Unlock()
 }
 
-func (f *stunFilter) ClaimIncoming(in []byte, addr net.Addr) bool {
+func (f *stunFilter) ClaimIncoming(in []byte, _ net.Addr) bool {
 	if f.isStunPayload(in) {
 		f.mut.Lock()
 		_, ok := f.ids[string(in[8:20])]

lib/testutils/testutils.go

@@ -25,12 +25,12 @@ func NewBlockingRW() *BlockingRW {
 		closeOnce: sync.Once{},
 	}
 }
-func (rw *BlockingRW) Read(p []byte) (int, error) {
+func (rw *BlockingRW) Read(_ []byte) (int, error) {
 	<-rw.c
 	return 0, ErrClosed
 }
 
-func (rw *BlockingRW) Write(p []byte) (int, error) {
+func (rw *BlockingRW) Write(_ []byte) (int, error) {
 	<-rw.c
 	return 0, ErrClosed
 }

lib/upnp/upnp.go

@@ -85,7 +85,7 @@ func (e *UnsupportedDeviceTypeError) Error() string {
 
 // Discover discovers UPnP InternetGatewayDevices.
 // The order in which the devices appear in the results list is not deterministic.
-func Discover(ctx context.Context, renewal, timeout time.Duration) []nat.Device {
+func Discover(ctx context.Context, _, timeout time.Duration) []nat.Device {
 	var results []nat.Device
 
 	interfaces, err := net.Interfaces()

lib/util/semaphore_test.go

@@ -8,7 +8,7 @@ package util
 
 import "testing"
 
-func TestZeroByteSempahore(t *testing.T) {
+func TestZeroByteSempahore(_ *testing.T) {
 	// A semaphore with zero capacity is just a no-op.
 
 	s := NewSemaphore(0)

lib/versioner/external.go

@@ -117,7 +117,7 @@ func (v external) GetVersions() (map[string][]FileVersion, error) {
 	return nil, ErrRestorationNotSupported
 }
 
-func (v external) Restore(filePath string, versionTime time.Time) error {
+func (v external) Restore(_ string, _ time.Time) error {
 	return ErrRestorationNotSupported
 }
 

lib/watchaggregator/aggregator.go

@@ -421,7 +421,7 @@ func (a *aggregator) String() string {
 	return fmt.Sprintf("aggregator/%s:", a.folderCfg.Description())
 }
 
-func (a *aggregator) CommitConfiguration(from, to config.Configuration) bool {
+func (a *aggregator) CommitConfiguration(_, to config.Configuration) bool {
 	for _, folderCfg := range to.Folders {
 		if folderCfg.ID == a.folderID {
 			select {

meta/metalint_test.go

@@ -70,7 +70,7 @@ func isGometalinterInstalled() bool {
 	return true
 }
 
-func gometalinter(t *testing.T, dirs []string, excludes ...string) bool {
+func gometalinter(_ *testing.T, dirs []string, excludes ...string) bool {
 	params := []string{"--disable-all", "--concurrency=2", "--deadline=300s"}
 
 	for _, linter := range fastLinters {