diff -urN /usr/src/linux/arch/x86/kernel/syscall_table_32.S kernelSrc/arch/x86/kernel/syscall_table_32.S
--- /usr/src/linux/arch/x86/kernel/syscall_table_32.S	2009-07-04 03:22:22.000000000 -0400
+++ kernelSrc/arch/x86/kernel/syscall_table_32.S	2009-09-21 09:12:31.000000000 -0400
@@ -332,3 +332,7 @@
 	.long sys_dup3			/* 330 */
 	.long sys_pipe2
 	.long sys_inotify_init1
+	.long sys_mailbox_send
+	.long sys_mailbox_rcv
+	.long sys_mailbox_manage	/* 335 */
+
diff -urN /usr/src/linux/include/asm-x86/unistd_32.h kernelSrc/include/asm-x86/unistd_32.h
--- /usr/src/linux/include/asm-x86/unistd_32.h	2009-07-04 03:22:22.000000000 -0400
+++ kernelSrc/include/asm-x86/unistd_32.h	2009-09-21 09:18:11.000000000 -0400
@@ -338,6 +338,9 @@
 #define __NR_dup3		330
 #define __NR_pipe2		331
 #define __NR_inotify_init1	332
+#define __NR_mailbox_send	333
+#define __NR_mailbox_rcv	334
+#define __NR_mailbox_manage	335
 
 #ifdef __KERNEL__
 
diff -urN /usr/src/linux/include/linux/sched.h kernelSrc/include/linux/sched.h
--- /usr/src/linux/include/linux/sched.h	2009-07-04 03:22:22.000000000 -0400
+++ kernelSrc/include/linux/sched.h	2009-09-21 09:07:32.000000000 -0400
@@ -1030,6 +1030,8 @@
 	struct rt_rq		*my_q;
 };
 
+struct cs3013_mailbox;
+
 struct task_struct {
 	volatile long state;	/* -1 unrunnable, 0 runnable, >0 stopped */
 	void *stack;
@@ -1179,6 +1181,8 @@
 	struct files_struct *files;
 /* namespaces */
 	struct nsproxy *nsproxy;
+/* CS-3013 mailbox */
+        struct cs3013_mailbox *mailbox;
 /* signal handlers */
 	struct signal_struct *signal;
 	struct sighand_struct *sighand;