AP_Scripting: add DIR_DISABLE param

libraries/AP_Scripting/AP_Scripting.cpp

@@ -101,6 +101,14 @@ const AP_Param::GroupInfo AP_Scripting::var_info[] = {
     // @User: Standard
     AP_GROUPINFO("USER4", 8, AP_Scripting, _user[3], 0.0),
 
+    // @Param: DIR_DISABLE
+    // @DisplayName: Directory disable
+    // @Description: This will stop scripts being loaded from the given locations
+    // @Bitmask: 0:ROMFS, 1:APM/scripts
+    // @RebootRequired: True
+    // @User: Advanced
+    AP_GROUPINFO("DIR_DISABLE", 9, AP_Scripting, _dir_disable, 0),
+
     AP_GROUPEND
 };
 

libraries/AP_Scripting/AP_Scripting.h

@@ -50,6 +50,12 @@ public:
         bool session;
     } terminal;
 
+    enum class SCR_DIR {
+        ROMFS = 1 << 0,
+        SCRIPTS = 1 << 1,
+    };
+    uint16_t get_disabled_dir() { return uint16_t(_dir_disable.get());}
+
 private:
 
     bool repl_start(void);
@@ -63,6 +69,7 @@ private:
     AP_Int32 _script_vm_exec_count;
     AP_Int32 _script_heap_size;
     AP_Int8 _debug_level;
+    AP_Int16 _dir_disable;
 
     bool _init_failed;  // true if memory allocation failed
 

libraries/AP_Scripting/lua_scripts.cpp

@@ -363,8 +363,20 @@ void lua_scripts::run(void) {
     load_generated_bindings(L);
 
     // Scan the filesystem in an appropriate manner and autostart scripts
-    load_all_scripts_in_dir(L, SCRIPTING_DIRECTORY);
-    load_all_scripts_in_dir(L, "@ROMFS/scripts");
+    // Skip those directores disabled with SCR_DIR_DISABLE param
+    uint16_t dir_disable = AP_Scripting::get_singleton()->get_disabled_dir();
+    bool loaded = false;
+    if ((dir_disable & uint16_t(AP_Scripting::SCR_DIR::SCRIPTS)) == 0) {
+        load_all_scripts_in_dir(L, SCRIPTING_DIRECTORY);
+        loaded = true;
+    }
+    if ((dir_disable & uint16_t(AP_Scripting::SCR_DIR::ROMFS)) == 0) {
+        load_all_scripts_in_dir(L, "@ROMFS/scripts");
+        loaded = true;
+    }
+    if (!loaded) {
+        gcs().send_text(MAV_SEVERITY_CRITICAL, "Lua: All directory's disabled see SCR_DIR_DISABLE");
+    }
 
 #ifndef __clang_analyzer__
     succeeded_initial_load = true;