new file mode 100644
--- /dev/null
+++ b/src/core/ngx_module.h
@@ -0,0 +1,74 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Maxim Dounin
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#ifndef _NGX_MODULE_H_INCLUDED_
+#define _NGX_MODULE_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+#define NGX_MODULE_V1          0, 0, 0, 0, 0, 0, 1
+#define NGX_MODULE_V1_PADDING  0, 0, 0, 0, 0, 0, 0, 0
+
+
+struct ngx_module_s {
+    ngx_uint_t            ctx_index;
+    ngx_uint_t            index;
+
+    ngx_uint_t            spare0;
+    ngx_uint_t            spare1;
+    ngx_uint_t            spare2;
+    ngx_uint_t            spare3;
+
+    ngx_uint_t            version;
+
+    void                 *ctx;
+    ngx_command_t        *commands;
+    ngx_uint_t            type;
+
+    ngx_int_t           (*init_master)(ngx_log_t *log);
+
+    ngx_int_t           (*init_module)(ngx_cycle_t *cycle);
+
+    ngx_int_t           (*init_process)(ngx_cycle_t *cycle);
+    ngx_int_t           (*init_thread)(ngx_cycle_t *cycle);
+    void                (*exit_thread)(ngx_cycle_t *cycle);
+    void                (*exit_process)(ngx_cycle_t *cycle);
+
+    void                (*exit_master)(ngx_cycle_t *cycle);
+
+    uintptr_t             spare_hook0;
+    uintptr_t             spare_hook1;
+    uintptr_t             spare_hook2;
+    uintptr_t             spare_hook3;
+    uintptr_t             spare_hook4;
+    uintptr_t             spare_hook5;
+    uintptr_t             spare_hook6;
+    uintptr_t             spare_hook7;
+};
+
+
+typedef struct {
+    ngx_str_t             name;
+    void               *(*create_conf)(ngx_cycle_t *cycle);
+    char               *(*init_conf)(ngx_cycle_t *cycle, void *conf);
+} ngx_core_module_t;
+
+
+ngx_int_t ngx_preinit_modules();
+ngx_int_t ngx_init_modules(ngx_cycle_t *cycle);
+ngx_int_t ngx_count_modules(ngx_cycle_t *cycle, ngx_uint_t type);
+
+
+extern ngx_module_t  *ngx_modules[];
+extern ngx_uint_t     ngx_max_module;
+
+
+#endif /* _NGX_MODULE_H_INCLUDED_ */