add IPC to build && fix errors

src/IPC/ipc.c

@@ -17,7 +17,7 @@ inline static enum SendIPCErrors send_ipc(int pid, ksys_ipc_msg* msg)
     asm_inline(
         "int $0x40"
         : "=a"(ret)
-        : "a"(60), "b"(1), "c"(pid), "d"(msg), "S"(sizeof(ksys_ipc_msg) + msg->datalen)
+        : "a"(60), "b"(2), "c"(pid), "d"(msg), "S"(sizeof(ksys_ipc_msg) + msg->datalen)
     );
 
     return ret;
@@ -28,10 +28,9 @@ int syscalls_DefineIPCBuffer(lua_State* L)
     uint32_t len = luaL_checkinteger(L, 1);
     ksys_ipc_buffer* buffer;
 
-
     define_ipc(buffer, len);
 
-    return 1;
+    return 0;
 }
 
 int syscalls_SendIPCMessage(lua_State* L)
@@ -39,7 +38,7 @@ int syscalls_SendIPCMessage(lua_State* L)
     lua_pushinteger(
         L,
         send_ipc(
-            lua_checkinteger(L, 1),
+            luaL_checkinteger(L, 1),
             luaL_checkudata(L, 1, syscalls_IPC_msg_metatable_name)
         )
     );