Index: nokeyctl.c
==================================================================
--- nokeyctl.c
+++ nokeyctl.c
@@ -28,10 +28,11 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/syscalls.h>
 #include <linux/sched.h>
+#include <linux/cred.h>
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Alessandro Ghedini and Mike Perry");
 MODULE_DESCRIPTION("disable the keyctl() system call");
 
@@ -42,11 +43,14 @@
 #if defined(__enable_32bits_support)
 static asmlinkage long (*o_ptr32)(int cmd, ...);
 #endif
 
 asmlinkage long nokeyctl(int cmd, ...) {
-	printk("[nokeyctl] keyctl() invoked by process %i\n", current->pid);
+	printk("[nokeyctl] keyctl() invoked by process %llu, user id = %llu\n", \
+		(unsigned long long) current->pid, \
+		(unsigned long long) (get_current_user()->uid.val)
+	);
 
 	return(-EPERM);
 }
 
 static void sys_call_table_make_rw(void **addr);