modified some syscall code in rlibc, fs stuff

kernel/scheduler.h

@@ -1,11 +1,13 @@
 #ifndef KSCHEDULER_H
 #define KSCHEDULER_H
 
+#include "process.h"
 #include <stdint.h>
 
 void init_scheduler();
 
 int create_task(uint32_t entry_point, uint32_t cr3);
+process_t* current_task();
 
 void sleep(uint32_t ms);
 void yield();