more UI and change default local user permissions

app.go

@@ -744,6 +744,52 @@ func (a *App) collectCIFSMountConfig(defaults CIFSMountConfig) (CIFSMountConfig,
 	}, nil
 }
 
+func defaultCIFSMountConfig() CIFSMountConfig {
+	uid, gid := defaultLocalMountOwnerGroup(os.Getenv, user.Current, user.Lookup, user.LookupGroupId)
+	return CIFSMountConfig{
+		UID: uid,
+		GID: gid,
+	}
+}
+
+func defaultLocalMountOwnerGroup(
+	getenv func(string) string,
+	currentUser func() (*user.User, error),
+	lookupUser func(string) (*user.User, error),
+	lookupGroupID func(string) (*user.Group, error),
+) (uid string, gid string) {
+	resolveGroup := func(groupID string) string {
+		if strings.TrimSpace(groupID) == "" {
+			return ""
+		}
+		group, err := lookupGroupID(groupID)
+		if err != nil {
+			return strings.TrimSpace(groupID)
+		}
+		return strings.TrimSpace(group.Name)
+	}
+
+	if sudoUser := strings.TrimSpace(getenv("SUDO_USER")); sudoUser != "" {
+		uid = sudoUser
+		if sudoGID := strings.TrimSpace(getenv("SUDO_GID")); sudoGID != "" {
+			return uid, resolveGroup(sudoGID)
+		}
+		if u, err := lookupUser(sudoUser); err == nil {
+			return uid, resolveGroup(u.Gid)
+		}
+		return uid, ""
+	}
+
+	u, err := currentUser()
+	if err != nil {
+		return "", ""
+	}
+
+	uid = strings.TrimSpace(u.Username)
+	gid = resolveGroup(u.Gid)
+	return uid, gid
+}
+
 func (a *App) ensureMountPoint(path string) error {
 	info, err := os.Stat(path)
 	if err == nil {
@@ -1545,7 +1591,7 @@ func (a *App) addClientMount() error {
 		return err
 	}
 
-	cfg, err := a.collectCIFSMountConfig(CIFSMountConfig{})
+	cfg, err := a.collectCIFSMountConfig(defaultCIFSMountConfig())
 	if err != nil {
 		return err
 	}