chore(release): 2.41.0

The defaults remain the same as before.
For now, the config options are global instead of per-user.
Note also that the BoltDB creation maintains the old default mode of 0640
since it's not really a user-facing filesystem manipulation.
Fixes #5316, #5200

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [2.41.0](https://github.com/filebrowser/filebrowser/compare/v2.40.2...v2.41.0) (2025-07-22)
+
+
+### Features
+
+* Allow file and directory creation modes to be configured ([21ad653](https://github.com/filebrowser/filebrowser/commit/21ad653b7eb246c0e95ccdc131f8d59267de7818)), closes [#5316](https://github.com/filebrowser/filebrowser/issues/5316) [#5200](https://github.com/filebrowser/filebrowser/issues/5200)
+* better error handling for sys kill signals ([1582b8b](https://github.com/filebrowser/filebrowser/commit/1582b8b2cd1c62fa93e60ca9b4e740e940b02e84))
+
 ### [2.40.2](https://github.com/filebrowser/filebrowser/compare/v2.40.1...v2.40.2) (2025-07-17)
 
 

cmd/cmd.go

@@ -1,12 +1,6 @@
 package cmd
 
-import (
-	"log"
-)
-
 // Execute executes the commands.
-func Execute() {
-	if err := rootCmd.Execute(); err != nil {
-		log.Fatal(err)
-	}
+func Execute() error {
+	return rootCmd.Execute()
 }

cmd/cmds_add.go

@@ -15,13 +15,18 @@ var cmdsAddCmd = &cobra.Command{
 	Short: "Add a command to run on a specific event",
 	Long:  `Add a command to run on a specific event.`,
 	Args:  cobra.MinimumNArgs(2),
-	Run: python(func(_ *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(_ *cobra.Command, args []string, d *pythonData) error {
 		s, err := d.store.Settings.Get()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		command := strings.Join(args[1:], " ")
 		s.Commands[args[0]] = append(s.Commands[args[0]], command)
 		err = d.store.Settings.Save(s)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		printEvents(s.Commands)
+		return nil
 	}, pythonConfig{}),
 }

cmd/cmds_ls.go

@@ -14,10 +14,15 @@ var cmdsLsCmd = &cobra.Command{
 	Short: "List all commands for each event",
 	Long:  `List all commands for each event.`,
 	Args:  cobra.NoArgs,
-	Run: python(func(cmd *cobra.Command, _ []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, _ []string, d *pythonData) error {
 		s, err := d.store.Settings.Get()
-		checkErr(err)
-		evt := mustGetString(cmd.Flags(), "event")
+		if err != nil {
+			return err
+		}
+		evt, err := getString(cmd.Flags(), "event")
+		if err != nil {
+			return err
+		}
 
 		if evt == "" {
 			printEvents(s.Commands)
@@ -27,5 +32,6 @@ var cmdsLsCmd = &cobra.Command{
 			show["after_"+evt] = s.Commands["after_"+evt]
 			printEvents(show)
 		}
+		return nil
 	}, pythonConfig{}),
 }

cmd/cmds_rm.go

@@ -35,22 +35,31 @@ including 'index_end'.`,
 
 		return nil
 	},
-	Run: python(func(_ *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(_ *cobra.Command, args []string, d *pythonData) error {
 		s, err := d.store.Settings.Get()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		evt := args[0]
 
 		i, err := strconv.Atoi(args[1])
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		f := i
 		if len(args) == 3 {
 			f, err = strconv.Atoi(args[2])
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 		}
 
 		s.Commands[evt] = append(s.Commands[evt][:i], s.Commands[evt][f+1:]...)
 		err = d.store.Settings.Save(s)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		printEvents(s.Commands)
+		return nil
 	}, pythonConfig{}),
 }

cmd/config.go

@@ -49,11 +49,18 @@ func addConfigFlags(flags *pflag.FlagSet) {
 	flags.String("branding.files", "", "path to directory with images and custom styles")
 	flags.Bool("branding.disableExternal", false, "disable external links such as GitHub links")
 	flags.Bool("branding.disableUsedPercentage", false, "disable used disk percentage graph")
+	// NB: these are string so they can be presented as octal in the help text
+	// as that's the conventional representation for modes in Unix.
+	flags.String("file-mode", fmt.Sprintf("%O", settings.DefaultFileMode), "Mode bits that new files are created with")
+	flags.String("dir-mode", fmt.Sprintf("%O", settings.DefaultDirMode), "Mode bits that new directories are created with")
 }
 
-//nolint:gocyclo
-func getAuthentication(flags *pflag.FlagSet, defaults ...interface{}) (settings.AuthMethod, auth.Auther) {
-	method := settings.AuthMethod(mustGetString(flags, "auth.method"))
+func getAuthMethod(flags *pflag.FlagSet, defaults ...interface{}) (settings.AuthMethod, map[string]interface{}, error) {
+	methodStr, err := getString(flags, "auth.method")
+	if err != nil {
+		return "", nil, err
+	}
+	method := settings.AuthMethod(methodStr)
 
 	var defaultAuther map[string]interface{}
 	if len(defaults) > 0 {
@@ -64,83 +71,124 @@ func getAuthentication(flags *pflag.FlagSet, defaults ...interface{}) (settings.
 					method = def.AuthMethod
 				case auth.Auther:
 					ms, err := json.Marshal(def)
-					checkErr(err)
+					if err != nil {
+						return "", nil, err
+					}
 					err = json.Unmarshal(ms, &defaultAuther)
-					checkErr(err)
+					if err != nil {
+						return "", nil, err
+					}
 				}
 			}
 		}
 	}
 
-	var auther auth.Auther
-	if method == auth.MethodProxyAuth {
-		header := mustGetString(flags, "auth.header")
-
-		if header == "" {
-			header = defaultAuther["header"].(string)
-		}
-
-		if header == "" {
-			checkErr(nerrors.New("you must set the flag 'auth.header' for method 'proxy'"))
-		}
-
-		auther = &auth.ProxyAuth{Header: header}
-	}
-
-	if method == auth.MethodNoAuth {
-		auther = &auth.NoAuth{}
-	}
-
-	if method == auth.MethodJSONAuth {
-		jsonAuth := &auth.JSONAuth{}
-		host := mustGetString(flags, "recaptcha.host")
-		key := mustGetString(flags, "recaptcha.key")
-		secret := mustGetString(flags, "recaptcha.secret")
-
-		if key == "" {
-			if kmap, ok := defaultAuther["recaptcha"].(map[string]interface{}); ok {
-				key = kmap["key"].(string)
-			}
-		}
-
-		if secret == "" {
-			if smap, ok := defaultAuther["recaptcha"].(map[string]interface{}); ok {
-				secret = smap["secret"].(string)
-			}
-		}
-
-		if key != "" && secret != "" {
-			jsonAuth.ReCaptcha = &auth.ReCaptcha{
-				Host:   host,
-				Key:    key,
-				Secret: secret,
-			}
-		}
-		auther = jsonAuth
-	}
-
-	if method == auth.MethodHookAuth {
-		command := mustGetString(flags, "auth.command")
-
-		if command == "" {
-			command = defaultAuther["command"].(string)
-		}
-
-		if command == "" {
-			checkErr(nerrors.New("you must set the flag 'auth.command' for method 'hook'"))
-		}
-
-		auther = &auth.HookAuth{Command: command}
-	}
-
-	if auther == nil {
-		panic(errors.ErrInvalidAuthMethod)
-	}
-
-	return method, auther
+	return method, defaultAuther, nil
 }
 
-func printSettings(ser *settings.Server, set *settings.Settings, auther auth.Auther) {
+func getProxyAuth(flags *pflag.FlagSet, defaultAuther map[string]interface{}) (auth.Auther, error) {
+	header, err := getString(flags, "auth.header")
+	if err != nil {
+		return nil, err
+	}
+
+	if header == "" {
+		header = defaultAuther["header"].(string)
+	}
+
+	if header == "" {
+		return nil, nerrors.New("you must set the flag 'auth.header' for method 'proxy'")
+	}
+
+	return &auth.ProxyAuth{Header: header}, nil
+}
+
+func getNoAuth() auth.Auther {
+	return &auth.NoAuth{}
+}
+
+func getJSONAuth(flags *pflag.FlagSet, defaultAuther map[string]interface{}) (auth.Auther, error) {
+	jsonAuth := &auth.JSONAuth{}
+	host, err := getString(flags, "recaptcha.host")
+	if err != nil {
+		return nil, err
+	}
+	key, err := getString(flags, "recaptcha.key")
+	if err != nil {
+		return nil, err
+	}
+	secret, err := getString(flags, "recaptcha.secret")
+	if err != nil {
+		return nil, err
+	}
+
+	if key == "" {
+		if kmap, ok := defaultAuther["recaptcha"].(map[string]interface{}); ok {
+			key = kmap["key"].(string)
+		}
+	}
+
+	if secret == "" {
+		if smap, ok := defaultAuther["recaptcha"].(map[string]interface{}); ok {
+			secret = smap["secret"].(string)
+		}
+	}
+
+	if key != "" && secret != "" {
+		jsonAuth.ReCaptcha = &auth.ReCaptcha{
+			Host:   host,
+			Key:    key,
+			Secret: secret,
+		}
+	}
+	return jsonAuth, nil
+}
+
+func getHookAuth(flags *pflag.FlagSet, defaultAuther map[string]interface{}) (auth.Auther, error) {
+	command, err := getString(flags, "auth.command")
+	if err != nil {
+		return nil, err
+	}
+
+	if command == "" {
+		command = defaultAuther["command"].(string)
+	}
+
+	if command == "" {
+		return nil, nerrors.New("you must set the flag 'auth.command' for method 'hook'")
+	}
+
+	return &auth.HookAuth{Command: command}, nil
+}
+
+func getAuthentication(flags *pflag.FlagSet, defaults ...interface{}) (settings.AuthMethod, auth.Auther, error) {
+	method, defaultAuther, err := getAuthMethod(flags, defaults...)
+	if err != nil {
+		return "", nil, err
+	}
+
+	var auther auth.Auther
+	switch method {
+	case auth.MethodProxyAuth:
+		auther, err = getProxyAuth(flags, defaultAuther)
+	case auth.MethodNoAuth:
+		auther = getNoAuth()
+	case auth.MethodJSONAuth:
+		auther, err = getJSONAuth(flags, defaultAuther)
+	case auth.MethodHookAuth:
+		auther, err = getHookAuth(flags, defaultAuther)
+	default:
+		return "", nil, errors.ErrInvalidAuthMethod
+	}
+
+	if err != nil {
+		return "", nil, err
+	}
+
+	return method, auther, nil
+}
+
+func printSettings(ser *settings.Server, set *settings.Settings, auther auth.Auther) error {
 	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
 
 	fmt.Fprintf(w, "Sign up:\t%t\n", set.Signup)
@@ -170,6 +218,8 @@ func printSettings(ser *settings.Server, set *settings.Settings, auther auth.Aut
 	fmt.Fprintf(w, "\tLocale:\t%s\n", set.Defaults.Locale)
 	fmt.Fprintf(w, "\tView mode:\t%s\n", set.Defaults.ViewMode)
 	fmt.Fprintf(w, "\tSingle Click:\t%t\n", set.Defaults.SingleClick)
+	fmt.Fprintf(w, "\tFile Creation Mode:\t%O\n", set.FileMode)
+	fmt.Fprintf(w, "\tDirectory Creation Mode:\t%O\n", set.DirMode)
 	fmt.Fprintf(w, "\tCommands:\t%s\n", strings.Join(set.Defaults.Commands, " "))
 	fmt.Fprintf(w, "\tSorting:\n")
 	fmt.Fprintf(w, "\t\tBy:\t%s\n", set.Defaults.Sorting.By)
@@ -186,6 +236,9 @@ func printSettings(ser *settings.Server, set *settings.Settings, auther auth.Aut
 	w.Flush()
 
 	b, err := json.MarshalIndent(auther, "", "  ")
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 	fmt.Printf("\nAuther configuration (raw):\n\n%s\n\n", string(b))
+	return nil
 }

cmd/config_cat.go

@@ -13,13 +13,19 @@ var configCatCmd = &cobra.Command{
 	Short: "Prints the configuration",
 	Long:  `Prints the configuration.`,
 	Args:  cobra.NoArgs,
-	Run: python(func(_ *cobra.Command, _ []string, d pythonData) {
+	RunE: python(func(_ *cobra.Command, _ []string, d *pythonData) error {
 		set, err := d.store.Settings.Get()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		ser, err := d.store.Settings.GetServer()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		auther, err := d.store.Auth.Get(set.AuthMethod)
-		checkErr(err)
-		printSettings(ser, set, auther)
+		if err != nil {
+			return err
+		}
+		return printSettings(ser, set, auther)
 	}, pythonConfig{}),
 }

cmd/config_export.go

@@ -15,15 +15,21 @@ var configExportCmd = &cobra.Command{
 json or yaml file. This exported configuration can be changed,
 and imported again with 'config import' command.`,
 	Args: jsonYamlArg,
-	Run: python(func(_ *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(_ *cobra.Command, args []string, d *pythonData) error {
 		settings, err := d.store.Settings.Get()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		server, err := d.store.Settings.GetServer()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		auther, err := d.store.Auth.Get(settings.AuthMethod)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		data := &settingsFile{
 			Settings: settings,
@@ -32,6 +38,9 @@ and imported again with 'config import' command.`,
 		}
 
 		err = marshal(args[0], data)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
+		return nil
 	}, pythonConfig{}),
 }

cmd/config_import.go

@@ -34,26 +34,35 @@ database.
 
 The path must be for a json or yaml file.`,
 	Args: jsonYamlArg,
-	Run: python(func(_ *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(_ *cobra.Command, args []string, d *pythonData) error {
 		var key []byte
+		var err error
 		if d.hadDB {
-			settings, err := d.store.Settings.Get()
-			checkErr(err)
+			settings, settingErr := d.store.Settings.Get()
+			if settingErr != nil {
+				return settingErr
+			}
 			key = settings.Key
 		} else {
 			key = generateKey()
 		}
 
 		file := settingsFile{}
-		err := unmarshal(args[0], &file)
-		checkErr(err)
+		err = unmarshal(args[0], &file)
+		if err != nil {
+			return err
+		}
 
 		file.Settings.Key = key
 		err = d.store.Settings.Save(file.Settings)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		err = d.store.Settings.SaveServer(file.Server)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		var rawAuther interface{}
 		if filepath.Ext(args[0]) != ".json" {
@@ -63,32 +72,51 @@ The path must be for a json or yaml file.`,
 		}
 
 		var auther auth.Auther
+		var autherErr error
 		switch file.Settings.AuthMethod {
 		case auth.MethodJSONAuth:
-			auther = getAuther(auth.JSONAuth{}, rawAuther).(*auth.JSONAuth)
+			var a interface{}
+			a, autherErr = getAuther(auth.JSONAuth{}, rawAuther)
+			auther = a.(*auth.JSONAuth)
 		case auth.MethodNoAuth:
-			auther = getAuther(auth.NoAuth{}, rawAuther).(*auth.NoAuth)
+			var a interface{}
+			a, autherErr = getAuther(auth.NoAuth{}, rawAuther)
+			auther = a.(*auth.NoAuth)
 		case auth.MethodProxyAuth:
-			auther = getAuther(auth.ProxyAuth{}, rawAuther).(*auth.ProxyAuth)
+			var a interface{}
+			a, autherErr = getAuther(auth.ProxyAuth{}, rawAuther)
+			auther = a.(*auth.ProxyAuth)
 		case auth.MethodHookAuth:
-			auther = getAuther(&auth.HookAuth{}, rawAuther).(*auth.HookAuth)
+			var a interface{}
+			a, autherErr = getAuther(&auth.HookAuth{}, rawAuther)
+			auther = a.(*auth.HookAuth)
 		default:
-			checkErr(errors.New("invalid auth method"))
+			return errors.New("invalid auth method")
+		}
+
+		if autherErr != nil {
+			return autherErr
 		}
 
 		err = d.store.Auth.Save(auther)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
-		printSettings(file.Server, file.Settings, auther)
+		return printSettings(file.Server, file.Settings, auther)
 	}, pythonConfig{allowNoDB: true}),
 }
 
-func getAuther(sample auth.Auther, data interface{}) interface{} {
+func getAuther(sample auth.Auther, data interface{}) (interface{}, error) {
 	authType := reflect.TypeOf(sample)
 	auther := reflect.New(authType).Interface()
 	bytes, err := json.Marshal(data)
-	checkErr(err)
+	if err != nil {
+		return nil, err
+	}
 	err = json.Unmarshal(bytes, &auther)
-	checkErr(err)
-	return auther
+	if err != nil {
+		return nil, err
+	}
+	return auther, nil
 }

cmd/config_init.go

@@ -22,52 +22,161 @@ this options can be changed in the future with the command
 to the defaults when creating new users and you don't
 override the options.`,
 	Args: cobra.NoArgs,
-	Run: python(func(cmd *cobra.Command, _ []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, _ []string, d *pythonData) error {
 		defaults := settings.UserDefaults{}
 		flags := cmd.Flags()
-		getUserDefaults(flags, &defaults, true)
-		authMethod, auther := getAuthentication(flags)
+		err := getUserDefaults(flags, &defaults, true)
+		if err != nil {
+			return err
+		}
+		authMethod, auther, err := getAuthentication(flags)
+		if err != nil {
+			return err
+		}
+
+		key := generateKey()
+
+		signup, err := getBool(flags, "signup")
+		if err != nil {
+			return err
+		}
+
+		createUserDir, err := getBool(flags, "create-user-dir")
+		if err != nil {
+			return err
+		}
+
+		minLength, err := getUint(flags, "minimum-password-length")
+		if err != nil {
+			return err
+		}
+
+		shell, err := getString(flags, "shell")
+		if err != nil {
+			return err
+		}
+
+		brandingName, err := getString(flags, "branding.name")
+		if err != nil {
+			return err
+		}
+
+		brandingDisableExternal, err := getBool(flags, "branding.disableExternal")
+		if err != nil {
+			return err
+		}
+
+		brandingDisableUsedPercentage, err := getBool(flags, "branding.disableUsedPercentage")
+		if err != nil {
+			return err
+		}
+
+		brandingTheme, err := getString(flags, "branding.theme")
+		if err != nil {
+			return err
+		}
+
+		brandingFiles, err := getString(flags, "branding.files")
+		if err != nil {
+			return err
+		}
 
 		s := &settings.Settings{
-			Key:                   generateKey(),
-			Signup:                mustGetBool(flags, "signup"),
-			CreateUserDir:         mustGetBool(flags, "create-user-dir"),
-			MinimumPasswordLength: mustGetUint(flags, "minimum-password-length"),
-			Shell:                 convertCmdStrToCmdArray(mustGetString(flags, "shell")),
+			Key:                   key,
+			Signup:                signup,
+			CreateUserDir:         createUserDir,
+			MinimumPasswordLength: minLength,
+			Shell:                 convertCmdStrToCmdArray(shell),
 			AuthMethod:            authMethod,
 			Defaults:              defaults,
 			Branding: settings.Branding{
-				Name:                  mustGetString(flags, "branding.name"),
-				DisableExternal:       mustGetBool(flags, "branding.disableExternal"),
-				DisableUsedPercentage: mustGetBool(flags, "branding.disableUsedPercentage"),
-				Theme:                 mustGetString(flags, "branding.theme"),
-				Files:                 mustGetString(flags, "branding.files"),
+				Name:                  brandingName,
+				DisableExternal:       brandingDisableExternal,
+				DisableUsedPercentage: brandingDisableUsedPercentage,
+				Theme:                 brandingTheme,
+				Files:                 brandingFiles,
 			},
 		}
 
-		ser := &settings.Server{
-			Address: mustGetString(flags, "address"),
-			Socket:  mustGetString(flags, "socket"),
-			Root:    mustGetString(flags, "root"),
-			BaseURL: mustGetString(flags, "baseurl"),
-			TLSKey:  mustGetString(flags, "key"),
-			TLSCert: mustGetString(flags, "cert"),
-			Port:    mustGetString(flags, "port"),
-			Log:     mustGetString(flags, "log"),
+		s.FileMode, err = getMode(flags, "file-mode")
+		if err != nil {
+			return err
 		}
 
-		err := d.store.Settings.Save(s)
-		checkErr(err)
+		s.DirMode, err = getMode(flags, "file-mode")
+		if err != nil {
+			return err
+		}
+
+		address, err := getString(flags, "address")
+		if err != nil {
+			return err
+		}
+
+		socket, err := getString(flags, "socket")
+		if err != nil {
+			return err
+		}
+
+		root, err := getString(flags, "root")
+		if err != nil {
+			return err
+		}
+
+		baseURL, err := getString(flags, "baseurl")
+		if err != nil {
+			return err
+		}
+
+		tlsKey, err := getString(flags, "key")
+		if err != nil {
+			return err
+		}
+
+		cert, err := getString(flags, "cert")
+		if err != nil {
+			return err
+		}
+
+		port, err := getString(flags, "port")
+		if err != nil {
+			return err
+		}
+
+		log, err := getString(flags, "log")
+		if err != nil {
+			return err
+		}
+
+		ser := &settings.Server{
+			Address: address,
+			Socket:  socket,
+			Root:    root,
+			BaseURL: baseURL,
+			TLSKey:  tlsKey,
+			TLSCert: cert,
+			Port:    port,
+			Log:     log,
+		}
+
+		err = d.store.Settings.Save(s)
+		if err != nil {
+			return err
+		}
 		err = d.store.Settings.SaveServer(ser)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		err = d.store.Auth.Save(auther)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		fmt.Printf(`
 Congratulations! You've set up your database to use with File Browser.
 Now add your first user via 'filebrowser users add' and then you just
 need to call the main command to boot up the server.
 `)
-		printSettings(ser, s, auther)
+		return printSettings(ser, s, auther)
 	}, pythonConfig{noDB: true}),
 }

cmd/config_set.go

@@ -16,73 +16,105 @@ var configSetCmd = &cobra.Command{
 	Long: `Updates the configuration. Set the flags for the options
 you want to change. Other options will remain unchanged.`,
 	Args: cobra.NoArgs,
-	Run: python(func(cmd *cobra.Command, _ []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, _ []string, d *pythonData) error {
 		flags := cmd.Flags()
 		set, err := d.store.Settings.Get()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		ser, err := d.store.Settings.GetServer()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		hasAuth := false
 		flags.Visit(func(flag *pflag.Flag) {
+			if err != nil {
+				return
+			}
 			switch flag.Name {
 			case "baseurl":
-				ser.BaseURL = mustGetString(flags, flag.Name)
+				ser.BaseURL, err = getString(flags, flag.Name)
 			case "root":
-				ser.Root = mustGetString(flags, flag.Name)
+				ser.Root, err = getString(flags, flag.Name)
 			case "socket":
-				ser.Socket = mustGetString(flags, flag.Name)
+				ser.Socket, err = getString(flags, flag.Name)
 			case "cert":
-				ser.TLSCert = mustGetString(flags, flag.Name)
+				ser.TLSCert, err = getString(flags, flag.Name)
 			case "key":
-				ser.TLSKey = mustGetString(flags, flag.Name)
+				ser.TLSKey, err = getString(flags, flag.Name)
 			case "address":
-				ser.Address = mustGetString(flags, flag.Name)
+				ser.Address, err = getString(flags, flag.Name)
 			case "port":
-				ser.Port = mustGetString(flags, flag.Name)
+				ser.Port, err = getString(flags, flag.Name)
 			case "log":
-				ser.Log = mustGetString(flags, flag.Name)
+				ser.Log, err = getString(flags, flag.Name)
 			case "signup":
-				set.Signup = mustGetBool(flags, flag.Name)
+				set.Signup, err = getBool(flags, flag.Name)
 			case "auth.method":
 				hasAuth = true
 			case "shell":
-				set.Shell = convertCmdStrToCmdArray(mustGetString(flags, flag.Name))
+				var shell string
+				shell, err = getString(flags, flag.Name)
+				set.Shell = convertCmdStrToCmdArray(shell)
 			case "create-user-dir":
-				set.CreateUserDir = mustGetBool(flags, flag.Name)
+				set.CreateUserDir, err = getBool(flags, flag.Name)
 			case "minimum-password-length":
-				set.MinimumPasswordLength = mustGetUint(flags, flag.Name)
+				set.MinimumPasswordLength, err = getUint(flags, flag.Name)
 			case "branding.name":
-				set.Branding.Name = mustGetString(flags, flag.Name)
+				set.Branding.Name, err = getString(flags, flag.Name)
 			case "branding.color":
-				set.Branding.Color = mustGetString(flags, flag.Name)
+				set.Branding.Color, err = getString(flags, flag.Name)
 			case "branding.theme":
-				set.Branding.Theme = mustGetString(flags, flag.Name)
+				set.Branding.Theme, err = getString(flags, flag.Name)
 			case "branding.disableExternal":
-				set.Branding.DisableExternal = mustGetBool(flags, flag.Name)
+				set.Branding.DisableExternal, err = getBool(flags, flag.Name)
 			case "branding.disableUsedPercentage":
-				set.Branding.DisableUsedPercentage = mustGetBool(flags, flag.Name)
+				set.Branding.DisableUsedPercentage, err = getBool(flags, flag.Name)
 			case "branding.files":
-				set.Branding.Files = mustGetString(flags, flag.Name)
+				set.Branding.Files, err = getString(flags, flag.Name)
+			case "file-mode":
+				set.FileMode, err = getMode(flags, flag.Name)
+			case "dir-mode":
+				set.DirMode, err = getMode(flags, flag.Name)
 			}
 		})
 
-		getUserDefaults(flags, &set.Defaults, false)
+		if err != nil {
+			return err
+		}
+
+		err = getUserDefaults(flags, &set.Defaults, false)
+		if err != nil {
+			return err
+		}
 
 		// read the defaults
 		auther, err := d.store.Auth.Get(set.AuthMethod)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		// check if there are new flags for existing auth method
-		set.AuthMethod, auther = getAuthentication(flags, hasAuth, set, auther)
+		set.AuthMethod, auther, err = getAuthentication(flags, hasAuth, set, auther)
+		if err != nil {
+			return err
+		}
 
 		err = d.store.Auth.Save(auther)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		err = d.store.Settings.Save(set)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		err = d.store.Settings.SaveServer(ser)
-		checkErr(err)
-		printSettings(ser, set, auther)
+		if err != nil {
+			return err
+		}
+
+		return printSettings(ser, set, auther)
 	}, pythonConfig{}),
 }

cmd/docs.go

@@ -39,12 +39,19 @@ var docsCmd = &cobra.Command{
 	Use:    "docs",
 	Hidden: true,
 	Args:   cobra.NoArgs,
-	Run: func(cmd *cobra.Command, _ []string) {
-		dir := mustGetString(cmd.Flags(), "path")
-		generateDocs(rootCmd, dir)
+	RunE: func(cmd *cobra.Command, _ []string) error {
+		dir, err := getString(cmd.Flags(), "path")
+		if err != nil {
+			return err
+		}
+
+		err = generateDocs(rootCmd, dir)
+		if err != nil {
+			return err
+		}
 		names := []string{}
 
-		err := filepath.Walk(dir, func(_ string, info os.FileInfo, err error) error {
+		err = filepath.Walk(dir, func(_ string, info os.FileInfo, err error) error {
 			if err != nil || info.IsDir() {
 				return err
 			}
@@ -56,30 +63,38 @@ var docsCmd = &cobra.Command{
 			names = append(names, info.Name())
 			return nil
 		})
+		if err != nil {
+			return err
+		}
 
-		checkErr(err)
 		printToc(names)
+		return nil
 	},
 }
 
-func generateDocs(cmd *cobra.Command, dir string) {
+func generateDocs(cmd *cobra.Command, dir string) error {
 	for _, c := range cmd.Commands() {
 		if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
 			continue
 		}
 
-		generateDocs(c, dir)
+		err := generateDocs(c, dir)
+		if err != nil {
+			return err
+		}
 	}
 
 	basename := strings.Replace(cmd.CommandPath(), " ", "-", -1) + ".md"
 	filename := filepath.Join(dir, basename)
 	f, err := os.Create(filename)
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 	defer f.Close()
-	generateMarkdown(cmd, f)
+	return generateMarkdown(cmd, f)
 }
 
-func generateMarkdown(cmd *cobra.Command, w io.Writer) {
+func generateMarkdown(cmd *cobra.Command, w io.Writer) error {
 	cmd.InitDefaultHelpCmd()
 	cmd.InitDefaultHelpFlag()
 
@@ -108,7 +123,7 @@ func generateMarkdown(cmd *cobra.Command, w io.Writer) {
 
 	printOptions(buf, cmd)
 	_, err := buf.WriteTo(w)
-	checkErr(err)
+	return err
 }
 
 func generateFlagsTable(fs *pflag.FlagSet, buf io.StringWriter) {

cmd/hash.go

@@ -17,9 +17,12 @@ var hashCmd = &cobra.Command{
 	Short: "Hashes a password",
 	Long:  `Hashes a password using bcrypt algorithm.`,
 	Args:  cobra.ExactArgs(1),
-	Run: func(_ *cobra.Command, args []string) {
+	RunE: func(_ *cobra.Command, args []string) error {
 		pwd, err := users.HashPwd(args[0])
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		fmt.Println(pwd)
+		return nil
 	},
 }

cmd/root.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/tls"
 	"errors"
+	"fmt"
 	"io"
 	"io/fs"
 	"log"
@@ -25,6 +26,7 @@ import (
 
 	"github.com/filebrowser/filebrowser/v2/auth"
 	"github.com/filebrowser/filebrowser/v2/diskcache"
+	fbErrors "github.com/filebrowser/filebrowser/v2/errors"
 	"github.com/filebrowser/filebrowser/v2/frontend"
 	fbhttp "github.com/filebrowser/filebrowser/v2/http"
 	"github.com/filebrowser/filebrowser/v2/img"
@@ -39,6 +41,7 @@ var (
 
 func init() {
 	cobra.OnInitialize(initConfig)
+	rootCmd.SilenceUsage = true
 	cobra.MousetrapHelpText = ""
 
 	rootCmd.SetVersionTemplate("File Browser version {{printf \"%s\" .Version}}\n")
@@ -112,36 +115,48 @@ set FB_DATABASE.
 Also, if the database path doesn't exist, File Browser will enter into
 the quick setup mode and a new database will be bootstrapped and a new
 user created with the credentials from options "username" and "password".`,
-	Run: python(func(cmd *cobra.Command, _ []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, _ []string, d *pythonData) error {
 		log.Println(cfgFile)
 
 		if !d.hadDB {
-			quickSetup(cmd.Flags(), d)
+			err := quickSetup(cmd.Flags(), *d)
+			if err != nil {
+				return err
+			}
 		}
 
 		// build img service
 		workersCount, err := cmd.Flags().GetInt("img-processors")
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		if workersCount < 1 {
-			log.Fatal("Image resize workers count could not be < 1")
+			return errors.New("image resize workers count could not be < 1")
 		}
 		imgSvc := img.New(workersCount)
 
 		var fileCache diskcache.Interface = diskcache.NewNoOp()
 		cacheDir, err := cmd.Flags().GetString("cache-dir")
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		if cacheDir != "" {
 			if err := os.MkdirAll(cacheDir, 0700); err != nil { //nolint:govet
-				log.Fatalf("can't make directory %s: %s", cacheDir, err)
+				return fmt.Errorf("can't make directory %s: %w", cacheDir, err)
 			}
 			fileCache = diskcache.New(afero.NewOsFs(), cacheDir)
 		}
 
-		server := getRunParams(cmd.Flags(), d.store)
+		server, err := getRunParams(cmd.Flags(), d.store)
+		if err != nil {
+			return err
+		}
 		setupLog(server.Log)
 
 		root, err := filepath.Abs(server.Root)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		server.Root = root
 
 		adr := server.Address + ":" + server.Port
@@ -151,22 +166,34 @@ user created with the credentials from options "username" and "password".`,
 		switch {
 		case server.Socket != "":
 			listener, err = net.Listen("unix", server.Socket)
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 			socketPerm, err := cmd.Flags().GetUint32("socket-perm") //nolint:govet
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 			err = os.Chmod(server.Socket, os.FileMode(socketPerm))
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 		case server.TLSKey != "" && server.TLSCert != "":
 			cer, err := tls.LoadX509KeyPair(server.TLSCert, server.TLSKey) //nolint:govet
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 			listener, err = tls.Listen("tcp", adr, &tls.Config{
 				MinVersion:   tls.VersionTLS12,
 				Certificates: []tls.Certificate{cer}},
 			)
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 		default:
 			listener, err = net.Listen("tcp", adr)
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 		}
 
 		assetsFs, err := fs.Sub(frontend.Assets(), "dist")
@@ -175,7 +202,9 @@ user created with the credentials from options "username" and "password".`,
 		}
 
 		handler, err := fbhttp.NewHandler(imgSvc, fileCache, d.store, server, assetsFs)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		defer listener.Close()
 
@@ -194,8 +223,15 @@ user created with the credentials from options "username" and "password".`,
 		}()
 
 		sigc := make(chan os.Signal, 1)
-		signal.Notify(sigc, os.Interrupt, syscall.SIGTERM)
-		<-sigc
+		signal.Notify(sigc,
+			os.Interrupt,
+			syscall.SIGHUP,
+			syscall.SIGINT,
+			syscall.SIGTERM,
+			syscall.SIGQUIT,
+		)
+		sig := <-sigc
+		log.Println("Got signal:", sig)
 
 		shutdownCtx, shutdownRelease := context.WithTimeout(context.Background(), 10*time.Second) //nolint:mnd
 		defer shutdownRelease()
@@ -204,13 +240,28 @@ user created with the credentials from options "username" and "password".`,
 			log.Fatalf("HTTP shutdown error: %v", err)
 		}
 		log.Println("Graceful shutdown complete.")
+
+		switch sig {
+		case syscall.SIGHUP:
+			d.err = fbErrors.ErrSighup
+		case syscall.SIGINT:
+			d.err = fbErrors.ErrSigint
+		case syscall.SIGQUIT:
+			d.err = fbErrors.ErrSigquit
+		case syscall.SIGTERM:
+			d.err = fbErrors.ErrSigTerm
+		}
+
+		return d.err
 	}, pythonConfig{allowNoDB: true}),
 }
 
 //nolint:gocyclo
-func getRunParams(flags *pflag.FlagSet, st *storage.Storage) *settings.Server {
+func getRunParams(flags *pflag.FlagSet, st *storage.Storage) (*settings.Server, error) {
 	server, err := st.Settings.GetServer()
-	checkErr(err)
+	if err != nil {
+		return nil, err
+	}
 
 	if val, set := getStringParamB(flags, "root"); set {
 		server.Root = val
@@ -253,7 +304,7 @@ func getRunParams(flags *pflag.FlagSet, st *storage.Storage) *settings.Server {
 	}
 
 	if isAddrSet && isSocketSet {
-		checkErr(errors.New("--socket flag cannot be used with --address, --port, --key nor --cert"))
+		return nil, errors.New("--socket flag cannot be used with --address, --port, --key nor --cert")
 	}
 
 	// Do not use saved Socket if address was manually set.
@@ -284,7 +335,7 @@ func getRunParams(flags *pflag.FlagSet, st *storage.Storage) *settings.Server {
 		server.TokenExpirationTime = val
 	}
 
-	return server
+	return server, nil
 }
 
 // getBoolParamB returns a parameter as a string and a boolean to tell if it is different from the default
@@ -363,7 +414,7 @@ func setupLog(logMethod string) {
 	}
 }
 
-func quickSetup(flags *pflag.FlagSet, d pythonData) {
+func quickSetup(flags *pflag.FlagSet, d pythonData) error {
 	log.Println("Performing quick setup")
 
 	set := &settings.Settings{
@@ -406,10 +457,14 @@ func quickSetup(flags *pflag.FlagSet, d pythonData) {
 		set.AuthMethod = auth.MethodJSONAuth
 		err = d.store.Auth.Save(&auth.JSONAuth{})
 	}
+	if err != nil {
+		return err
+	}
 
-	checkErr(err)
 	err = d.store.Settings.Save(set)
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 
 	ser := &settings.Server{
 		BaseURL: getStringParam(flags, "baseurl"),
@@ -422,7 +477,9 @@ func quickSetup(flags *pflag.FlagSet, d pythonData) {
 	}
 
 	err = d.store.Settings.SaveServer(ser)
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 
 	username := getStringParam(flags, "username")
 	password := getStringParam(flags, "password")
@@ -430,11 +487,15 @@ func quickSetup(flags *pflag.FlagSet, d pythonData) {
 	if password == "" {
 		var pwd string
 		pwd, err = users.RandomPwd(set.MinimumPasswordLength)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		log.Printf("User '%s' initialized with randomly generated password: %s\n", username, pwd)
 		password, err = users.ValidateAndHashPwd(pwd, set.MinimumPasswordLength)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 	} else {
 		log.Printf("User '%s' initialize wth user-provided password\n", username)
 	}
@@ -452,14 +513,15 @@ func quickSetup(flags *pflag.FlagSet, d pythonData) {
 	set.Defaults.Apply(user)
 	user.Perm.Admin = true
 
-	err = d.store.Users.Save(user)
-	checkErr(err)
+	return d.store.Users.Save(user)
 }
 
 func initConfig() {
 	if cfgFile == "" {
 		home, err := homedir.Dir()
-		checkErr(err)
+		if err != nil {
+			panic(err)
+		}
 		v.AddConfigPath(".")
 		v.AddConfigPath(home)
 		v.AddConfigPath("/etc/filebrowser/")

cmd/rule_rm.go

@@ -40,27 +40,29 @@ including 'index_end'.`,
 
 		return nil
 	},
-	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, args []string, d *pythonData) error {
 		i, err := strconv.Atoi(args[0])
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		f := i
 		if len(args) == 2 {
 			f, err = strconv.Atoi(args[1])
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 		}
 
-		user := func(u *users.User) {
+		user := func(u *users.User) error {
 			u.Rules = append(u.Rules[:i], u.Rules[f+1:]...)
-			err := d.store.Users.Save(u)
-			checkErr(err)
+			return d.store.Users.Save(u)
 		}
 
-		global := func(s *settings.Settings) {
+		global := func(s *settings.Settings) error {
 			s.Rules = append(s.Rules[:i], s.Rules[f+1:]...)
-			err := d.store.Settings.Save(s)
-			checkErr(err)
+			return d.store.Settings.Save(s)
 		}
 
-		runRules(d.store, cmd, user, global)
+		return runRules(d.store, cmd, user, global)
 	}, pythonConfig{}),
 }

cmd/rules.go

@@ -29,41 +29,62 @@ rules.`,
 	Args: cobra.NoArgs,
 }
 
-func runRules(st *storage.Storage, cmd *cobra.Command, usersFn func(*users.User), globalFn func(*settings.Settings)) {
-	id := getUserIdentifier(cmd.Flags())
+func runRules(st *storage.Storage, cmd *cobra.Command, usersFn func(*users.User) error, globalFn func(*settings.Settings) error) error {
+	id, err := getUserIdentifier(cmd.Flags())
+	if err != nil {
+		return err
+	}
 	if id != nil {
-		user, err := st.Users.Get("", id)
-		checkErr(err)
+		var user *users.User
+		user, err = st.Users.Get("", id)
+		if err != nil {
+			return err
+		}
 
 		if usersFn != nil {
-			usersFn(user)
+			err = usersFn(user)
+			if err != nil {
+				return err
+			}
 		}
 
 		printRules(user.Rules, id)
-		return
+		return nil
 	}
 
 	s, err := st.Settings.Get()
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 
 	if globalFn != nil {
-		globalFn(s)
+		err = globalFn(s)
+		if err != nil {
+			return err
+		}
 	}
 
 	printRules(s.Rules, id)
+	return nil
 }
 
-func getUserIdentifier(flags *pflag.FlagSet) interface{} {
-	id := mustGetUint(flags, "id")
-	username := mustGetString(flags, "username")
-
-	if id != 0 {
-		return id
-	} else if username != "" {
-		return username
+func getUserIdentifier(flags *pflag.FlagSet) (interface{}, error) {
+	id, err := getUint(flags, "id")
+	if err != nil {
+		return nil, err
+	}
+	username, err := getString(flags, "username")
+	if err != nil {
+		return nil, err
 	}
 
-	return nil
+	if id != 0 {
+		return id, nil
+	} else if username != "" {
+		return username, nil
+	}
+
+	return nil, nil
 }
 
 func printRules(rulez []rules.Rule, id interface{}) {

cmd/rules_add.go

@@ -21,9 +21,15 @@ var rulesAddCmd = &cobra.Command{
 	Short: "Add a global rule or user rule",
 	Long:  `Add a global rule or user rule.`,
 	Args:  cobra.ExactArgs(1),
-	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
-		allow := mustGetBool(cmd.Flags(), "allow")
-		regex := mustGetBool(cmd.Flags(), "regex")
+	RunE: python(func(cmd *cobra.Command, args []string, d *pythonData) error {
+		allow, err := getBool(cmd.Flags(), "allow")
+		if err != nil {
+			return err
+		}
+		regex, err := getBool(cmd.Flags(), "regex")
+		if err != nil {
+			return err
+		}
 		exp := args[0]
 
 		if regex {
@@ -41,18 +47,16 @@ var rulesAddCmd = &cobra.Command{
 			rule.Path = exp
 		}
 
-		user := func(u *users.User) {
+		user := func(u *users.User) error {
 			u.Rules = append(u.Rules, rule)
-			err := d.store.Users.Save(u)
-			checkErr(err)
+			return d.store.Users.Save(u)
 		}
 
-		global := func(s *settings.Settings) {
+		global := func(s *settings.Settings) error {
 			s.Rules = append(s.Rules, rule)
-			err := d.store.Settings.Save(s)
-			checkErr(err)
+			return d.store.Settings.Save(s)
 		}
 
-		runRules(d.store, cmd, user, global)
+		return runRules(d.store, cmd, user, global)
 	}, pythonConfig{}),
 }

cmd/rules_ls.go

@@ -13,7 +13,7 @@ var rulesLsCommand = &cobra.Command{
 	Short: "List global rules or user specific rules",
 	Long:  `List global rules or user specific rules.`,
 	Args:  cobra.NoArgs,
-	Run: python(func(cmd *cobra.Command, _ []string, d pythonData) {
-		runRules(d.store, cmd, nil, nil)
+	RunE: python(func(cmd *cobra.Command, _ []string, d *pythonData) error {
+		return runRules(d.store, cmd, nil, nil)
 	}, pythonConfig{}),
 }

cmd/upgrade.go

@@ -21,11 +21,20 @@ var upgradeCmd = &cobra.Command{
 import share links because they are incompatible with
 this version.`,
 	Args: cobra.NoArgs,
-	Run: func(cmd *cobra.Command, _ []string) {
+	RunE: func(cmd *cobra.Command, _ []string) error {
 		flags := cmd.Flags()
-		oldDB := mustGetString(flags, "old.database")
-		oldConf := mustGetString(flags, "old.config")
-		err := importer.Import(oldDB, oldConf, getStringParam(flags, "database"))
-		checkErr(err)
+		oldDB, err := getString(flags, "old.database")
+		if err != nil {
+			return err
+		}
+		oldConf, err := getString(flags, "old.config")
+		if err != nil {
+			return err
+		}
+		db, err := getString(flags, "database")
+		if err != nil {
+			return err
+		}
+		return importer.Import(oldDB, oldConf, db)
 	},
 }

cmd/users.go

@@ -79,50 +79,60 @@ func addUserFlags(flags *pflag.FlagSet) {
 	flags.Bool("singleClick", false, "use single clicks only")
 }
 
-func getViewMode(flags *pflag.FlagSet) users.ViewMode {
-	viewMode := users.ViewMode(mustGetString(flags, "viewMode"))
-	if viewMode != users.ListViewMode && viewMode != users.MosaicViewMode {
-		checkErr(errors.New("view mode must be \"" + string(users.ListViewMode) + "\" or \"" + string(users.MosaicViewMode) + "\""))
+func getViewMode(flags *pflag.FlagSet) (users.ViewMode, error) {
+	viewModeStr, err := getString(flags, "viewMode")
+	if err != nil {
+		return "", err
 	}
-	return viewMode
+	viewMode := users.ViewMode(viewModeStr)
+	if viewMode != users.ListViewMode && viewMode != users.MosaicViewMode {
+		return "", errors.New("view mode must be \"" + string(users.ListViewMode) + "\" or \"" + string(users.MosaicViewMode) + "\"")
+	}
+	return viewMode, nil
 }
 
 //nolint:gocyclo
-func getUserDefaults(flags *pflag.FlagSet, defaults *settings.UserDefaults, all bool) {
+func getUserDefaults(flags *pflag.FlagSet, defaults *settings.UserDefaults, all bool) error {
+	var visitErr error
 	visit := func(flag *pflag.Flag) {
+		if visitErr != nil {
+			return
+		}
+		var err error
 		switch flag.Name {
 		case "scope":
-			defaults.Scope = mustGetString(flags, flag.Name)
+			defaults.Scope, err = getString(flags, flag.Name)
 		case "locale":
-			defaults.Locale = mustGetString(flags, flag.Name)
+			defaults.Locale, err = getString(flags, flag.Name)
 		case "viewMode":
-			defaults.ViewMode = getViewMode(flags)
+			defaults.ViewMode, err = getViewMode(flags)
 		case "singleClick":
-			defaults.SingleClick = mustGetBool(flags, flag.Name)
+			defaults.SingleClick, err = getBool(flags, flag.Name)
 		case "perm.admin":
-			defaults.Perm.Admin = mustGetBool(flags, flag.Name)
+			defaults.Perm.Admin, err = getBool(flags, flag.Name)
 		case "perm.execute":
-			defaults.Perm.Execute = mustGetBool(flags, flag.Name)
+			defaults.Perm.Execute, err = getBool(flags, flag.Name)
 		case "perm.create":
-			defaults.Perm.Create = mustGetBool(flags, flag.Name)
+			defaults.Perm.Create, err = getBool(flags, flag.Name)
 		case "perm.rename":
-			defaults.Perm.Rename = mustGetBool(flags, flag.Name)
+			defaults.Perm.Rename, err = getBool(flags, flag.Name)
 		case "perm.modify":
-			defaults.Perm.Modify = mustGetBool(flags, flag.Name)
+			defaults.Perm.Modify, err = getBool(flags, flag.Name)
 		case "perm.delete":
-			defaults.Perm.Delete = mustGetBool(flags, flag.Name)
+			defaults.Perm.Delete, err = getBool(flags, flag.Name)
 		case "perm.share":
-			defaults.Perm.Share = mustGetBool(flags, flag.Name)
+			defaults.Perm.Share, err = getBool(flags, flag.Name)
 		case "perm.download":
-			defaults.Perm.Download = mustGetBool(flags, flag.Name)
+			defaults.Perm.Download, err = getBool(flags, flag.Name)
 		case "commands":
-			commands, err := flags.GetStringSlice(flag.Name)
-			checkErr(err)
-			defaults.Commands = commands
+			defaults.Commands, err = flags.GetStringSlice(flag.Name)
 		case "sorting.by":
-			defaults.Sorting.By = mustGetString(flags, flag.Name)
+			defaults.Sorting.By, err = getString(flags, flag.Name)
 		case "sorting.asc":
-			defaults.Sorting.Asc = mustGetBool(flags, flag.Name)
+			defaults.Sorting.Asc, err = getBool(flags, flag.Name)
+		}
+		if err != nil {
+			visitErr = err
 		}
 	}
 
@@ -131,4 +141,5 @@ func getUserDefaults(flags *pflag.FlagSet, defaults *settings.UserDefaults, all
 	} else {
 		flags.Visit(visit)
 	}
+	return visitErr
 }

cmd/users_add.go

@@ -16,36 +16,57 @@ var usersAddCmd = &cobra.Command{
 	Short: "Create a new user",
 	Long:  `Create a new user and add it to the database.`,
 	Args:  cobra.ExactArgs(2),
-	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, args []string, d *pythonData) error {
 		s, err := d.store.Settings.Get()
-		checkErr(err)
-		getUserDefaults(cmd.Flags(), &s.Defaults, false)
+		if err != nil {
+			return err
+		}
+		err = getUserDefaults(cmd.Flags(), &s.Defaults, false)
+		if err != nil {
+			return err
+		}
 
 		password, err := users.ValidateAndHashPwd(args[1], s.MinimumPasswordLength)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
+
+		lockPassword, err := getBool(cmd.Flags(), "lockPassword")
+		if err != nil {
+			return err
+		}
 
 		user := &users.User{
 			Username:     args[0],
 			Password:     password,
-			LockPassword: mustGetBool(cmd.Flags(), "lockPassword"),
+			LockPassword: lockPassword,
 		}
 
 		s.Defaults.Apply(user)
 
 		servSettings, err := d.store.Settings.GetServer()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		// since getUserDefaults() polluted s.Defaults.Scope
 		// which makes the Scope not the one saved in the db
 		// we need the right s.Defaults.Scope here
 		s2, err := d.store.Settings.Get()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		userHome, err := s2.MakeUserDir(user.Username, user.Scope, servSettings.Root)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		user.Scope = userHome
 
 		err = d.store.Users.Save(user)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		printUsers([]*users.User{user})
+		return nil
 	}, pythonConfig{}),
 }

cmd/users_export.go

@@ -14,11 +14,16 @@ var usersExportCmd = &cobra.Command{
 	Long: `Export all users to a json or yaml file. Please indicate the
 path to the file where you want to write the users.`,
 	Args: jsonYamlArg,
-	Run: python(func(_ *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(_ *cobra.Command, args []string, d *pythonData) error {
 		list, err := d.store.Users.Gets("")
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		err = marshal(args[0], list)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
+		return nil
 	}, pythonConfig{}),
 }

cmd/users_find.go

@@ -16,17 +16,17 @@ var usersFindCmd = &cobra.Command{
 	Short: "Find a user by username or id",
 	Long:  `Find a user by username or id. If no flag is set, all users will be printed.`,
 	Args:  cobra.ExactArgs(1),
-	Run:   findUsers,
+	RunE:  findUsers,
 }
 
 var usersLsCmd = &cobra.Command{
 	Use:   "ls",
 	Short: "List all users.",
 	Args:  cobra.NoArgs,
-	Run:   findUsers,
+	RunE:  findUsers,
 }
 
-var findUsers = python(func(_ *cobra.Command, args []string, d pythonData) {
+var findUsers = python(func(_ *cobra.Command, args []string, d *pythonData) error {
 	var (
 		list []*users.User
 		user *users.User
@@ -46,6 +46,9 @@ var findUsers = python(func(_ *cobra.Command, args []string, d pythonData) {
 		list, err = d.store.Users.Gets("")
 	}
 
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 	printUsers(list)
+	return nil
 }, pythonConfig{})

cmd/users_import.go

@@ -25,34 +25,54 @@ file. You can use this command to import new users to your
 installation. For that, just don't place their ID on the files
 list or set it to 0.`,
 	Args: jsonYamlArg,
-	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, args []string, d *pythonData) error {
 		fd, err := os.Open(args[0])
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		defer fd.Close()
 
 		list := []*users.User{}
 		err = unmarshal(args[0], &list)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		for _, user := range list {
 			err = user.Clean("")
-			checkErr(err)
-		}
-
-		if mustGetBool(cmd.Flags(), "replace") {
-			oldUsers, err := d.store.Users.Gets("")
-			checkErr(err)
-
-			err = marshal("users.backup.json", list)
-			checkErr(err)
-
-			for _, user := range oldUsers {
-				err = d.store.Users.Delete(user.ID)
-				checkErr(err)
+			if err != nil {
+				return err
 			}
 		}
 
-		overwrite := mustGetBool(cmd.Flags(), "overwrite")
+		replace, err := getBool(cmd.Flags(), "replace")
+		if err != nil {
+			return err
+		}
+
+		if replace {
+			oldUsers, userImportErr := d.store.Users.Gets("")
+			if userImportErr != nil {
+				return userImportErr
+			}
+
+			err = marshal("users.backup.json", list)
+			if err != nil {
+				return err
+			}
+
+			for _, user := range oldUsers {
+				err = d.store.Users.Delete(user.ID)
+				if err != nil {
+					return err
+				}
+			}
+		}
+
+		overwrite, err := getBool(cmd.Flags(), "overwrite")
+		if err != nil {
+			return err
+		}
 
 		for _, user := range list {
 			onDB, err := d.store.Users.Get("", user.ID)
@@ -60,7 +80,7 @@ list or set it to 0.`,
 			// User exists in DB.
 			if err == nil {
 				if !overwrite {
-					checkErr(errors.New("user " + strconv.Itoa(int(user.ID)) + " is already registered"))
+					return errors.New("user " + strconv.Itoa(int(user.ID)) + " is already registered")
 				}
 
 				// If the usernames mismatch, check if there is another one in the DB
@@ -68,7 +88,7 @@ list or set it to 0.`,
 				// operation
 				if user.Username != onDB.Username {
 					if conflictuous, err := d.store.Users.Get("", user.Username); err == nil { //nolint:govet
-						checkErr(usernameConflictError(user.Username, conflictuous.ID, user.ID))
+						return usernameConflictError(user.Username, conflictuous.ID, user.ID)
 					}
 				}
 			} else {
@@ -78,8 +98,11 @@ list or set it to 0.`,
 			}
 
 			err = d.store.Users.Save(user)
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 		}
+		return nil
 	}, pythonConfig{}),
 }
 

cmd/users_rm.go

@@ -15,7 +15,7 @@ var usersRmCmd = &cobra.Command{
 	Short: "Delete a user by username or id",
 	Long:  `Delete a user by username or id`,
 	Args:  cobra.ExactArgs(1),
-	Run: python(func(_ *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(_ *cobra.Command, args []string, d *pythonData) error {
 		username, id := parseUsernameOrID(args[0])
 		var err error
 
@@ -25,7 +25,10 @@ var usersRmCmd = &cobra.Command{
 			err = d.store.Users.Delete(id)
 		}
 
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		fmt.Println("user deleted successfully")
+		return nil
 	}, pythonConfig{}),
 }

cmd/users_update.go

@@ -21,14 +21,22 @@ var usersUpdateCmd = &cobra.Command{
 	Long: `Updates an existing user. Set the flags for the
 options you want to change.`,
 	Args: cobra.ExactArgs(1),
-	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
+	RunE: python(func(cmd *cobra.Command, args []string, d *pythonData) error {
 		username, id := parseUsernameOrID(args[0])
 		flags := cmd.Flags()
-		password := mustGetString(flags, "password")
-		newUsername := mustGetString(flags, "username")
+		password, err := getString(flags, "password")
+		if err != nil {
+			return err
+		}
+		newUsername, err := getString(flags, "username")
+		if err != nil {
+			return err
+		}
 
 		s, err := d.store.Settings.Get()
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		var (
 			user *users.User
@@ -40,7 +48,9 @@ options you want to change.`,
 			user, err = d.store.Users.Get("", username)
 		}
 
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 
 		defaults := settings.UserDefaults{
 			Scope:       user.Scope,
@@ -51,7 +61,10 @@ options you want to change.`,
 			Sorting:     user.Sorting,
 			Commands:    user.Commands,
 		}
-		getUserDefaults(flags, &defaults, false)
+		err = getUserDefaults(flags, &defaults, false)
+		if err != nil {
+			return err
+		}
 		user.Scope = defaults.Scope
 		user.Locale = defaults.Locale
 		user.ViewMode = defaults.ViewMode
@@ -59,7 +72,10 @@ options you want to change.`,
 		user.Perm = defaults.Perm
 		user.Commands = defaults.Commands
 		user.Sorting = defaults.Sorting
-		user.LockPassword = mustGetBool(flags, "lockPassword")
+		user.LockPassword, err = getBool(flags, "lockPassword")
+		if err != nil {
+			return err
+		}
 
 		if newUsername != "" {
 			user.Username = newUsername
@@ -67,11 +83,16 @@ options you want to change.`,
 
 		if password != "" {
 			user.Password, err = users.ValidateAndHashPwd(password, s.MinimumPasswordLength)
-			checkErr(err)
+			if err != nil {
+				return err
+			}
 		}
 
 		err = d.store.Users.Update(user)
-		checkErr(err)
+		if err != nil {
+			return err
+		}
 		printUsers([]*users.User{user})
+		return nil
 	}, pythonConfig{}),
 }

cmd/utils.go

@@ -4,9 +4,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io/fs"
 	"log"
 	"os"
 	"path/filepath"
+	"strconv"
 	"strings"
 
 	"github.com/asdine/storm/v3"
@@ -14,44 +16,57 @@ import (
 	"github.com/spf13/pflag"
 	yaml "gopkg.in/yaml.v2"
 
-	"github.com/filebrowser/filebrowser/v2/files"
 	"github.com/filebrowser/filebrowser/v2/settings"
 	"github.com/filebrowser/filebrowser/v2/storage"
 	"github.com/filebrowser/filebrowser/v2/storage/bolt"
 )
 
-func checkErr(err error) {
+const dbPerms = 0640
+
+func returnErr(err error) error {
 	if err != nil {
-		log.Fatal(err)
+		return err
 	}
+	return nil
 }
 
-func mustGetString(flags *pflag.FlagSet, flag string) string {
+func getString(flags *pflag.FlagSet, flag string) (string, error) {
 	s, err := flags.GetString(flag)
-	checkErr(err)
-	return s
+	return s, returnErr(err)
 }
 
-func mustGetBool(flags *pflag.FlagSet, flag string) bool {
+func getMode(flags *pflag.FlagSet, flag string) (fs.FileMode, error) {
+	s, err := getString(flags, flag)
+	if err != nil {
+		return 0, err
+	}
+	b, err := strconv.ParseUint(s, 0, 32)
+	if err != nil {
+		return 0, err
+	}
+	return fs.FileMode(b), nil
+}
+
+func getBool(flags *pflag.FlagSet, flag string) (bool, error) {
 	b, err := flags.GetBool(flag)
-	checkErr(err)
-	return b
+	return b, returnErr(err)
 }
 
-func mustGetUint(flags *pflag.FlagSet, flag string) uint {
+func getUint(flags *pflag.FlagSet, flag string) (uint, error) {
 	b, err := flags.GetUint(flag)
-	checkErr(err)
-	return b
+	return b, returnErr(err)
 }
 
 func generateKey() []byte {
 	k, err := settings.GenerateKey()
-	checkErr(err)
+	if err != nil {
+		panic(err)
+	}
 	return k
 }
 
-type cobraFunc func(cmd *cobra.Command, args []string)
-type pythonFunc func(cmd *cobra.Command, args []string, data pythonData)
+type cobraFunc func(cmd *cobra.Command, args []string) error
+type pythonFunc func(cmd *cobra.Command, args []string, data *pythonData) error
 
 type pythonConfig struct {
 	noDB      bool
@@ -61,6 +76,7 @@ type pythonConfig struct {
 type pythonData struct {
 	hadDB bool
 	store *storage.Storage
+	err   error
 }
 
 func dbExists(path string) (bool, error) {
@@ -84,8 +100,8 @@ func dbExists(path string) (bool, error) {
 }
 
 func python(fn pythonFunc, cfg pythonConfig) cobraFunc {
-	return func(cmd *cobra.Command, args []string) {
-		data := pythonData{hadDB: true}
+	return func(cmd *cobra.Command, args []string) error {
+		data := &pythonData{hadDB: true}
 
 		path := getStringParam(cmd.Flags(), "database")
 		absPath, err := filepath.Abs(path)
@@ -106,18 +122,24 @@ func python(fn pythonFunc, cfg pythonConfig) cobraFunc {
 
 		log.Println("Using database: " + absPath)
 		data.hadDB = exists
-		db, err := storm.Open(path, storm.BoltOptions(files.PermFile, nil))
-		checkErr(err)
+		db, err := storm.Open(path, storm.BoltOptions(dbPerms, nil))
+		if err != nil {
+			return err
+		}
 		defer db.Close()
 		data.store, err = bolt.NewStorage(db)
-		checkErr(err)
-		fn(cmd, args, data)
+		if err != nil {
+			return err
+		}
+		return fn(cmd, args, data)
 	}
 }
 
 func marshal(filename string, data interface{}) error {
 	fd, err := os.Create(filename)
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 	defer fd.Close()
 
 	switch ext := filepath.Ext(filename); ext {
@@ -135,7 +157,9 @@ func marshal(filename string, data interface{}) error {
 
 func unmarshal(filename string, data interface{}) error {
 	fd, err := os.Open(filename)
-	checkErr(err)
+	if err != nil {
+		return err
+	}
 	defer fd.Close()
 
 	switch ext := filepath.Ext(filename); ext {

errors/errors.go

@@ -3,6 +3,15 @@ package errors
 import (
 	"errors"
 	"fmt"
+	"os"
+	"syscall"
+)
+
+const (
+	ExitCodeSigTerm = 128 + int(syscall.SIGTERM)
+	ExitCodeSighup  = 128 + int(syscall.SIGHUP)
+	ExitCodeSigint  = 128 + int(syscall.SIGINT)
+	ExitCodeSigquit = 128 + int(syscall.SIGQUIT)
 )
 
 var (
@@ -22,6 +31,10 @@ var (
 	ErrInvalidRequestParams = errors.New("invalid request params")
 	ErrSourceIsParent       = errors.New("source is parent")
 	ErrRootUserDeletion     = errors.New("user with id 1 can't be deleted")
+	ErrSigTerm              = errors.New("exit on signal: sigterm")
+	ErrSighup               = errors.New("exit on signal: sighup")
+	ErrSigint               = errors.New("exit on signal: sigint")
+	ErrSigquit              = errors.New("exit on signal: sigquit")
 )
 
 type ErrShortPassword struct {
@@ -31,3 +44,44 @@ type ErrShortPassword struct {
 func (e ErrShortPassword) Error() string {
 	return fmt.Sprintf("password is too short, minimum length is %d", e.MinimumLength)
 }
+
+// GetExitCode returns the exit code for a given error.
+func GetExitCode(err error) int {
+	if err == nil {
+		return 0
+	}
+
+	exitCodeMap := map[error]int{
+		ErrSigTerm: ExitCodeSigTerm,
+		ErrSighup:  ExitCodeSighup,
+		ErrSigint:  ExitCodeSigint,
+		ErrSigquit: ExitCodeSigquit,
+	}
+
+	for e, code := range exitCodeMap {
+		if errors.Is(err, e) {
+			return code
+		}
+	}
+
+	if exitErr, ok := err.(interface{ ExitCode() int }); ok {
+		return exitErr.ExitCode()
+	}
+
+	var pathErr *os.PathError
+	if errors.As(err, &pathErr) {
+		return 1
+	}
+
+	var syscallErr *os.SyscallError
+	if errors.As(err, &syscallErr) {
+		return 1
+	}
+
+	var errno syscall.Errno
+	if errors.As(err, &errno) {
+		return 1
+	}
+
+	return 1
+}

files/file.go

@@ -27,9 +27,6 @@ import (
 	"github.com/filebrowser/filebrowser/v2/rules"
 )
 
-const PermFile = 0640
-const PermDir = 0750
-
 var (
 	reSubDirs = regexp.MustCompile("(?i)^sub(s|titles)$")
 	reSubExts = regexp.MustCompile("(?i)(.vtt|.srt|.ass|.ssa)$")

fileutils/copy.go

@@ -1,6 +1,7 @@
 package fileutils
 
 import (
+	"io/fs"
 	"os"
 	"path"
 
@@ -8,7 +9,7 @@ import (
 )
 
 // Copy copies a file or folder from one place to another.
-func Copy(fs afero.Fs, src, dst string) error {
+func Copy(afs afero.Fs, src, dst string, fileMode, dirMode fs.FileMode) error {
 	if src = path.Clean("/" + src); src == "" {
 		return os.ErrNotExist
 	}
@@ -26,14 +27,14 @@ func Copy(fs afero.Fs, src, dst string) error {
 		return os.ErrInvalid
 	}
 
-	info, err := fs.Stat(src)
+	info, err := afs.Stat(src)
 	if err != nil {
 		return err
 	}
 
 	if info.IsDir() {
-		return CopyDir(fs, src, dst)
+		return CopyDir(afs, src, dst, fileMode, dirMode)
 	}
 
-	return CopyFile(fs, src, dst)
+	return CopyFile(afs, src, dst, fileMode, dirMode)
 }

fileutils/dir.go

@@ -2,6 +2,7 @@ package fileutils
 
 import (
 	"errors"
+	"io/fs"
 
 	"github.com/spf13/afero"
 )
@@ -9,20 +10,20 @@ import (
 // CopyDir copies a directory from source to dest and all
 // of its sub-directories. It doesn't stop if it finds an error
 // during the copy. Returns an error if any.
-func CopyDir(fs afero.Fs, source, dest string) error {
+func CopyDir(afs afero.Fs, source, dest string, fileMode, dirMode fs.FileMode) error {
 	// Get properties of source.
-	srcinfo, err := fs.Stat(source)
+	srcinfo, err := afs.Stat(source)
 	if err != nil {
 		return err
 	}
 
 	// Create the destination directory.
-	err = fs.MkdirAll(dest, srcinfo.Mode())
+	err = afs.MkdirAll(dest, srcinfo.Mode())
 	if err != nil {
 		return err
 	}
 
-	dir, _ := fs.Open(source)
+	dir, _ := afs.Open(source)
 	obs, err := dir.Readdir(-1)
 	if err != nil {
 		return err
@@ -36,13 +37,13 @@ func CopyDir(fs afero.Fs, source, dest string) error {
 
 		if obj.IsDir() {
 			// Create sub-directories, recursively.
-			err = CopyDir(fs, fsource, fdest)
+			err = CopyDir(afs, fsource, fdest, fileMode, dirMode)
 			if err != nil {
 				errs = append(errs, err)
 			}
 		} else {
 			// Perform the file copy.
-			err = CopyFile(fs, fsource, fdest)
+			err = CopyFile(afs, fsource, fdest, fileMode, dirMode)
 			if err != nil {
 				errs = append(errs, err)
 			}

fileutils/file.go

@@ -2,29 +2,28 @@ package fileutils
 
 import (
 	"io"
+	"io/fs"
 	"os"
 	"path"
 	"path/filepath"
 
 	"github.com/spf13/afero"
-
-	"github.com/filebrowser/filebrowser/v2/files"
 )
 
 // MoveFile moves file from src to dst.
 // By default the rename filesystem system call is used. If src and dst point to different volumes
 // the file copy is used as a fallback
-func MoveFile(fs afero.Fs, src, dst string) error {
-	if fs.Rename(src, dst) == nil {
+func MoveFile(afs afero.Fs, src, dst string, fileMode, dirMode fs.FileMode) error {
+	if afs.Rename(src, dst) == nil {
 		return nil
 	}
 	// fallback
-	err := Copy(fs, src, dst)
+	err := Copy(afs, src, dst, fileMode, dirMode)
 	if err != nil {
-		_ = fs.Remove(dst)
+		_ = afs.Remove(dst)
 		return err
 	}
-	if err := fs.RemoveAll(src); err != nil {
+	if err := afs.RemoveAll(src); err != nil {
 		return err
 	}
 	return nil
@@ -32,9 +31,9 @@ func MoveFile(fs afero.Fs, src, dst string) error {
 
 // CopyFile copies a file from source to dest and returns
 // an error if any.
-func CopyFile(fs afero.Fs, source, dest string) error {
+func CopyFile(afs afero.Fs, source, dest string, fileMode, dirMode fs.FileMode) error {
 	// Open the source file.
-	src, err := fs.Open(source)
+	src, err := afs.Open(source)
 	if err != nil {
 		return err
 	}
@@ -42,13 +41,13 @@ func CopyFile(fs afero.Fs, source, dest string) error {
 
 	// Makes the directory needed to create the dst
 	// file.
-	err = fs.MkdirAll(filepath.Dir(dest), files.PermDir)
+	err = afs.MkdirAll(filepath.Dir(dest), dirMode)
 	if err != nil {
 		return err
 	}
 
 	// Create the destination file.
-	dst, err := fs.OpenFile(dest, os.O_RDWR|os.O_CREATE|os.O_TRUNC, files.PermFile)
+	dst, err := afs.OpenFile(dest, os.O_RDWR|os.O_CREATE|os.O_TRUNC, fileMode)
 	if err != nil {
 		return err
 	}
@@ -61,11 +60,11 @@ func CopyFile(fs afero.Fs, source, dest string) error {
 	}
 
 	// Copy the mode
-	info, err := fs.Stat(source)
+	info, err := afs.Stat(source)
 	if err != nil {
 		return err
 	}
-	err = fs.Chmod(dest, info.Mode())
+	err = afs.Chmod(dest, info.Mode())
 	if err != nil {
 		return err
 	}

http/resource.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 	"log"
 	"net/http"
 	"net/url"
@@ -105,7 +106,7 @@ func resourcePostHandler(fileCache FileCache) handleFunc {
 
 		// Directories creation on POST.
 		if strings.HasSuffix(r.URL.Path, "/") {
-			err := d.user.Fs.MkdirAll(r.URL.Path, files.PermDir)
+			err := d.user.Fs.MkdirAll(r.URL.Path, d.settings.DirMode)
 			return errToStatus(err), err
 		}
 
@@ -134,7 +135,7 @@ func resourcePostHandler(fileCache FileCache) handleFunc {
 		}
 
 		err = d.RunHook(func() error {
-			info, writeErr := writeFile(d.user.Fs, r.URL.Path, r.Body)
+			info, writeErr := writeFile(d.user.Fs, r.URL.Path, r.Body, d.settings.FileMode, d.settings.DirMode)
 			if writeErr != nil {
 				return writeErr
 			}
@@ -171,7 +172,7 @@ var resourcePutHandler = withUser(func(w http.ResponseWriter, r *http.Request, d
 	}
 
 	err = d.RunHook(func() error {
-		info, writeErr := writeFile(d.user.Fs, r.URL.Path, r.Body)
+		info, writeErr := writeFile(d.user.Fs, r.URL.Path, r.Body, d.settings.FileMode, d.settings.DirMode)
 		if writeErr != nil {
 			return writeErr
 		}
@@ -243,14 +244,14 @@ func checkParent(src, dst string) error {
 	return nil
 }
 
-func addVersionSuffix(source string, fs afero.Fs) string {
+func addVersionSuffix(source string, afs afero.Fs) string {
 	counter := 1
 	dir, name := path.Split(source)
 	ext := filepath.Ext(name)
 	base := strings.TrimSuffix(name, ext)
 
 	for {
-		if _, err := fs.Stat(source); err != nil {
+		if _, err := afs.Stat(source); err != nil {
 			break
 		}
 		renamed := fmt.Sprintf("%s(%d)%s", base, counter, ext)
@@ -261,14 +262,14 @@ func addVersionSuffix(source string, fs afero.Fs) string {
 	return source
 }
 
-func writeFile(fs afero.Fs, dst string, in io.Reader) (os.FileInfo, error) {
+func writeFile(afs afero.Fs, dst string, in io.Reader, fileMode, dirMode fs.FileMode) (os.FileInfo, error) {
 	dir, _ := path.Split(dst)
-	err := fs.MkdirAll(dir, files.PermDir)
+	err := afs.MkdirAll(dir, dirMode)
 	if err != nil {
 		return nil, err
 	}
 
-	file, err := fs.OpenFile(dst, os.O_RDWR|os.O_CREATE|os.O_TRUNC, files.PermFile)
+	file, err := afs.OpenFile(dst, os.O_RDWR|os.O_CREATE|os.O_TRUNC, fileMode)
 	if err != nil {
 		return nil, err
 	}
@@ -306,7 +307,7 @@ func patchAction(ctx context.Context, action, src, dst string, d *data, fileCach
 			return fbErrors.ErrPermissionDenied
 		}
 
-		return fileutils.Copy(d.user.Fs, src, dst)
+		return fileutils.Copy(d.user.Fs, src, dst, d.settings.FileMode, d.settings.DirMode)
 	case "rename":
 		if !d.user.Perm.Rename {
 			return fbErrors.ErrPermissionDenied
@@ -332,7 +333,7 @@ func patchAction(ctx context.Context, action, src, dst string, d *data, fileCach
 			return err
 		}
 
-		return fileutils.MoveFile(d.user.Fs, src, dst)
+		return fileutils.MoveFile(d.user.Fs, src, dst, d.settings.FileMode, d.settings.DirMode)
 	default:
 		return fmt.Errorf("unsupported action %s: %w", action, fbErrors.ErrInvalidRequestParams)
 	}

http/tus_handlers.go

@@ -92,7 +92,7 @@ func tusPostHandler() handleFunc {
 		case errors.Is(err, afero.ErrFileNotFound):
 			dirPath := filepath.Dir(r.URL.Path)
 			if _, statErr := d.user.Fs.Stat(dirPath); os.IsNotExist(statErr) {
-				if mkdirErr := d.user.Fs.MkdirAll(dirPath, files.PermDir); mkdirErr != nil {
+				if mkdirErr := d.user.Fs.MkdirAll(dirPath, d.settings.DirMode); mkdirErr != nil {
 					return http.StatusInternalServerError, err
 				}
 			}
@@ -121,7 +121,7 @@ func tusPostHandler() handleFunc {
 			fileFlags |= os.O_TRUNC
 		}
 
-		openFile, err := d.user.Fs.OpenFile(r.URL.Path, fileFlags, files.PermFile)
+		openFile, err := d.user.Fs.OpenFile(r.URL.Path, fileFlags, d.settings.FileMode)
 		if err != nil {
 			return errToStatus(err), err
 		}
@@ -239,7 +239,7 @@ func tusPatchHandler() handleFunc {
 			)
 		}
 
-		openFile, err := d.user.Fs.OpenFile(r.URL.Path, os.O_WRONLY|os.O_APPEND, files.PermFile)
+		openFile, err := d.user.Fs.OpenFile(r.URL.Path, os.O_WRONLY|os.O_APPEND, d.settings.FileMode)
 		if err != nil {
 			return http.StatusInternalServerError, fmt.Errorf("could not open file: %w", err)
 		}

main.go

@@ -1,9 +1,14 @@
 package main
 
 import (
+	"os"
+
 	"github.com/filebrowser/filebrowser/v2/cmd"
+	"github.com/filebrowser/filebrowser/v2/errors"
 )
 
 func main() {
-	cmd.Execute()
+	if err := cmd.Execute(); err != nil {
+		os.Exit(errors.GetExitCode(err))
+	}
 }

settings/settings.go

@@ -2,6 +2,7 @@ package settings
 
 import (
 	"crypto/rand"
+	"io/fs"
 	"log"
 	"strings"
 	"time"
@@ -11,6 +12,8 @@ import (
 
 const DefaultUsersHomeBasePath = "/users"
 const DefaultMinimumPasswordLength = 12
+const DefaultFileMode = 0640
+const DefaultDirMode = 0750
 
 // AuthMethod describes an authentication method.
 type AuthMethod string
@@ -29,6 +32,8 @@ type Settings struct {
 	Shell                 []string            `json:"shell"`
 	Rules                 []rules.Rule        `json:"rules"`
 	MinimumPasswordLength uint                `json:"minimumPasswordLength"`
+	FileMode              fs.FileMode         `json:"fileMode"`
+	DirMode               fs.FileMode         `json:"dirMode"`
 }
 
 // GetRules implements rules.Provider.

settings/storage.go

@@ -42,6 +42,12 @@ func (s *Storage) Get() (*Settings, error) {
 			RetryCount: DefaultTusRetryCount,
 		}
 	}
+	if set.FileMode == 0 {
+		set.FileMode = DefaultFileMode
+	}
+	if set.DirMode == 0 {
+		set.DirMode = DefaultDirMode
+	}
 	return set, nil
 }