diff --git a/include/linux/compat.h b/include/linux/compat.h
index 0d53ab4..e20b8b4 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -299,6 +299,15 @@
 	compat_uptr_t			list_op_pending;
 };
 
+#ifdef CONFIG_COMPAT_OLD_SIGACTION
+struct compat_old_sigaction {
+	compat_uptr_t			sa_handler;
+	compat_old_sigset_t		sa_mask;
+	compat_ulong_t			sa_flags;
+	compat_uptr_t			sa_restorer;
+};
+#endif
+
 struct compat_statfs;
 struct compat_statfs64;
 struct compat_old_linux_dirent;
@@ -383,6 +392,11 @@
 		const struct compat_sigevent __user *u_event);
 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig,
 				  struct compat_siginfo __user *uinfo);
+#ifdef CONFIG_COMPAT_OLD_SIGACTION
+asmlinkage long compat_sys_sigaction(int sig,
+                                   const struct compat_old_sigaction __user *act,
+                                   struct compat_old_sigaction __user *oact);
+#endif
 
 static inline int compat_timeval_compare(struct compat_timeval *lhs,
 					struct compat_timeval *rhs)
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 0b6878e..e28e8d4 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -269,6 +269,15 @@
 	__sigrestore_t ka_restorer;
 #endif
 };
+ 
+#ifdef CONFIG_OLD_SIGACTION
+struct old_sigaction {
+	__sighandler_t sa_handler;
+	old_sigset_t sa_mask;
+	unsigned long sa_flags;
+	__sigrestore_t sa_restorer;
+};
+#endif
 
 extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie);
 extern void signal_delivered(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int stepping);
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 1c4938b..02b0450 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -385,6 +385,11 @@
 asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
 #endif
 
+#ifdef CONFIG_OLD_SIGACTION
+asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
+				struct old_sigaction __user *);
+#endif
+
 #ifndef CONFIG_ODD_RT_SIGACTION
 asmlinkage long sys_rt_sigaction(int,
 				 const struct sigaction __user *,