Add command "list properties" so we can get all internal properties to sort, filter, or set jail properties

cmd/list.go

@@ -296,6 +296,42 @@ func displayStructFields(jails []Jail, valsToDisplay []string) {
 	fmt.Printf("\n")
 }
 
+/*
+* Display struct attributes name for a given struct.
+* Recurse into struct attributes of type struct
+* Used to show user jail properties
+*/
+func getStructFieldNames(parentStruct interface{}, result []string, prefix string) []string {
+	v := reflect.ValueOf(parentStruct)
+	
+	for i := 0 ; i < v.NumField() ; i++ {
+		if v.Type().Field(i).Type.Kind() == reflect.Struct {
+			result = getStructFieldNames(v.Field(i).Interface(), result, v.Type().Field(i).Name)
+		} else {
+			if len(prefix) > 0 {
+				result = append(result, fmt.Sprintf("%s.%s", prefix, v.Type().Field(i).Name))
+			} else {
+				result = append(result, v.Type().Field(i).Name)
+			}
+		}
+	}
+
+	return result
+}
+
+func ListJailsProps(args []string) {
+	var conf Jail
+	var jailconf JailConfig
+	var result []string
+	
+	conf.Config = jailconf
+	
+	result = getStructFieldNames(conf, result, "")
+	
+	for _, f := range result {
+		fmt.Printf("%s\n", f)
+	}
+}
 
 /* Get Jails from datastores. Store config and running metadata into gJails global var */
 func ListJails(args []string, display bool) {