Import

Src/Hyperion-kernel/lib/modules/Hyperion/30_userspace.kmod

@@ -0,0 +1,56 @@
+-- :Minify:--
+local args = {...}
+local kernel = args[1]
+kernel._G = _G
+
+local function readonly(tbl)
+    return setmetatable({}, {
+        __index = function(_, key)
+            local value = tbl[key]
+            if type(value) == "table" then return readonly(value) end
+            return value
+        end,
+
+        __newindex = function(t, k, v)
+            if kernel.config.allowGlobalOverwrites or
+                kernel.allowGlobalOverwrites then
+                rawset(tbl, k, v)
+                return
+            end
+            error("Attempt to modify global variable '" .. k .. "'", 2)
+        end,
+
+        __pairs = function()
+            local function iter(_, key)
+                local nextKey, value = next(tbl, key)
+                if type(value) == "table" then
+                    value = readonly(value)
+                end
+                return nextKey, value
+            end
+            return iter, tbl, nil
+        end,
+
+        __ipairs = function()
+            local i = 0
+            return function()
+                i = i + 1
+                local value = tbl[i]
+                if value == nil then return end
+                if type(value) == "table" then
+                    value = readonly(value)
+                end
+                return i, value
+            end
+        end,
+
+        __len = function() return #tbl end,
+
+        __metatable = false
+    })
+end
+
+kernel._U = readonly(kernel._G)
+kernel.allowGlobalOverwrites = true
+kernel._U._G = kernel._U
+kernel.allowGlobalOverwrites = false