resolve linter issues

ocis/go.sum

@@ -1506,6 +1506,7 @@ github.com/spf13/cobra v0.0.6/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHN
 github.com/spf13/cobra v0.0.7/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
 github.com/spf13/cobra v1.0.0 h1:6m/oheQuQ13N9ks4hubMG6BnvwOeaJrqSPLahSnczz8=
 github.com/spf13/cobra v1.0.0/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
+github.com/spf13/cobra v1.1.3 h1:xghbfqPkxzxP3C/f3n5DdpAbdKLj4ZE4BWQI362l53M=
 github.com/spf13/cobra v1.1.3/go.mod h1:pGADOWyqRD/YMrPZigI/zbliZ2wVD/23d+is3pSWzOo=
 github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
 github.com/spf13/jwalterweatherman v1.1.0 h1:ue6voC5bR5F8YxI5S67j9i582FU4Qvo2bmqnqMYADFk=

ocis/pkg/runtime/cmd/root.go

@@ -19,8 +19,12 @@ func RootCmd(cfg *config.Config) *cobra.Command {
 	rootCmd.PersistentFlags().StringVarP(&cfg.Port, "port", "p", "10666", "port to send messages to the rpc oCIS runtime.")
 	rootCmd.PersistentFlags().BoolVarP(&cfg.KeepAlive, "keep-alive", "k", false, "restart supervised processes that abruptly die.")
 
-	viper.BindPFlag("hostname", rootCmd.PersistentFlags().Lookup("hostname"))
+	if err := viper.BindPFlag("hostname", rootCmd.PersistentFlags().Lookup("hostname")); err != nil {
-	viper.BindPFlag("port", rootCmd.PersistentFlags().Lookup("port"))
+		panic(err)
+	}
+	if err := viper.BindPFlag("port", rootCmd.PersistentFlags().Lookup("port")); err != nil {
+		panic(err)
+	}
 
 	rootCmd.AddCommand(List(cfg))
 	rootCmd.AddCommand(Run(cfg))

ocis/pkg/runtime/controller/janitor.go

@@ -39,7 +39,7 @@ func (j *janitor) cleanup() {
 		// On unix like systems (linux, freebsd, etc) os.FindProcess will never return an error
 		if p, err := os.FindProcess(pid); err == nil {
 			if err := p.Signal(syscall.Signal(0)); err != nil {
-				j.store.Delete(process.ProcEntry{
+				_ = j.store.Delete(process.ProcEntry{
 					Pid:       pid,
 					Extension: name,
 				})

ocis/pkg/runtime/service/service.go

@@ -34,12 +34,16 @@ type Service struct {
 
 // loadFromEnv would set cmd global variables. This is a workaround spf13/viper since pman used as a library does not
 // parse flags.
-func loadFromEnv() *config.Config {
+func loadFromEnv() (*config.Config, error) {
 	cfg := config.NewConfig()
 	viper.AutomaticEnv()
 
-	viper.BindEnv("keep-alive", "RUNTIME_KEEP_ALIVE")
+	if err := viper.BindEnv("keep-alive", "RUNTIME_KEEP_ALIVE"); err != nil {
-	viper.BindEnv("port", "RUNTIME_PORT")
+		return nil, err
+	}
+	if err := viper.BindEnv("port", "RUNTIME_PORT"); err != nil {
+		return nil, err
+	}
 
 	cfg.KeepAlive = viper.GetBool("keep-alive")
 
@@ -47,7 +51,7 @@ func loadFromEnv() *config.Config {
 		cfg.Port = viper.GetString("port")
 	}
 
-	return cfg
+	return cfg, nil
 }
 
 // NewService returns a configured service with a controller and a default logger.
@@ -55,14 +59,17 @@ func loadFromEnv() *config.Config {
 // calls are done explicitly to loadFromEnv().
 // Since this is the public constructor, options need to be added, at the moment only logging options
 // are supported in order to match the running OwnCloud services structured log.
-func NewService(options ...Option) *Service {
+func NewService(options ...Option) (*Service, error) {
 	opts := NewOptions()
 
 	for _, f := range options {
 		f(opts)
 	}
 
-	cfg := loadFromEnv()
+	cfg, err := loadFromEnv()
+	if err != nil {
+		return nil, err
+	}
 	l := log.NewLogger(
 		log.WithPretty(opts.Log.Pretty),
 	)
@@ -74,12 +81,15 @@ func NewService(options ...Option) *Service {
 			controller.WithConfig(cfg),
 			controller.WithLog(&l),
 		),
-	}
+	}, nil
 }
 
 // Start an rpc service.
 func Start(o ...Option) error {
-	s := NewService(o...)
+	s, err := NewService(o...)
+	if err != nil {
+		s.Log.Fatal().Err(err)
+	}
 
 	if err := rpc.Register(s); err != nil {
 		s.Log.Fatal().Err(err)

ocis/pkg/runtime/storage/map_test.go

@@ -12,7 +12,9 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	loadStore()
+	if err := loadStore(); err != nil {
+		os.Exit(1)
+	}
 	os.Exit(m.Run())
 }
 
@@ -20,13 +22,17 @@ var (
 	store = NewMapStorage()
 )
 
-func loadStore() {
+func loadStore() error {
 	for i := 0; i < 20; i++ {
-		store.Store(process.ProcEntry{
+		if err := store.Store(process.ProcEntry{
-			Pid:       rand.Int(),
+			Pid:       rand.Int(), //nolint:gosec
 			Extension: fmt.Sprintf("extension-%s", strconv.Itoa(i)),
-		})
+		}); err != nil {
+			return err
+		}
 	}
+
+	return nil
 }
 
 func TestLoadAll(t *testing.T) {
@@ -35,9 +41,10 @@ func TestLoadAll(t *testing.T) {
 }
 
 func TestDelete(t *testing.T) {
-	store.Delete(process.ProcEntry{
+	err := store.Delete(process.ProcEntry{
 		Extension: "extension-1",
 	})
+	assert.Nil(t, err)
 	all := store.LoadAll()
 	assert.Zero(t, all["extension-1"])
 }