diff --git a/source/os_defs.h b/source/os_defs.h
index 48a4c8f..7226a4c 100644
--- a/source/os_defs.h
+++ b/source/os_defs.h
@@ -18,6 +18,13 @@ typedef struct _OsSpecifics
     unsigned int addr_KernSyscallTbl5;
 } OsSpecifics;
 
+typedef struct _s_mem_area
+{
+    unsigned int        address;
+    unsigned int        size;
+    struct _s_mem_area* next;
+} s_mem_area;
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/socket_functions.c b/source/socket_functions.c
index 9fecf84..d346108 100644
--- a/source/socket_functions.c
+++ b/source/socket_functions.c
@@ -32,6 +32,7 @@ EXPORT_DECL(s32, socket_lib_init, void);
 EXPORT_DECL(s32, socket_lib_finish, void);
 EXPORT_DECL(s32, socket, s32 domain, s32 type, s32 protocol);
 EXPORT_DECL(s32, socketclose, s32 s);
+EXPORT_DECL(s32, shutdown, s32 s, s32 how);
 EXPORT_DECL(s32, connect, s32 s, void *addr, s32 addrlen);
 EXPORT_DECL(s32, bind, s32 s,struct sockaddr *name,s32 namelen);
 EXPORT_DECL(s32, listen, s32 s,u32 backlog);
@@ -75,6 +76,7 @@ void InitSocketFunctionPointers(void){
     OS_FIND_EXPORT(nsysnet_handle, socketlasterr);
     OS_FIND_EXPORT(nsysnet_handle, socket);
     OS_FIND_EXPORT(nsysnet_handle, socketclose);
+    OS_FIND_EXPORT(nsysnet_handle, shutdown);
     OS_FIND_EXPORT(nsysnet_handle, connect);
     OS_FIND_EXPORT(nsysnet_handle, bind);
     OS_FIND_EXPORT(nsysnet_handle, listen);
diff --git a/source/socket_functions.h b/source/socket_functions.h
index f67c41c..f9b877d 100644
--- a/source/socket_functions.h
+++ b/source/socket_functions.h
@@ -39,6 +39,10 @@ extern u32 hostIpAddress;
 
 #define AF_INET         2
 
+#define SHUT_RD         0
+#define SHUT_WR         1
+#define SHUT_RDWR       2
+
 #define SOCK_STREAM     1
 #define SOCK_DGRAM      2
 
@@ -87,6 +91,7 @@ extern s32 (*socket_lib_init)(void);
 extern s32 (*socket_lib_finish)(void);
 extern s32 (*socket)(s32 domain, s32 type, s32 protocol);
 extern s32 (*socketclose)(s32 s);
+extern s32 (*shutdown)(s32 s, s32 how);
 extern s32 (*connect)(s32 s, void *addr, s32 addrlen);
 extern s32 (*bind)(s32 s,struct sockaddr *name,s32 namelen);
 extern s32 (*listen)(s32 s,u32 backlog);