Nucleus

diff --git a/include/sys/types.h b/include/sys/types.h
new file mode 100644
index 0000000..3eb3412
--- /dev/null
+++ b/include/sys/types.h
@@ -0,0 +1,16 @@
+#ifndef _SYS_TYPES_H
+#define _SYS_TYPES_H
+
+typedef int pid_t;
+typedef unsigned short uid_t;
+typedef unsigned short gid_t;
+typedef unsigned int dev_t;
+typedef int ino_t;
+typedef int off_t;
+typedef int mode_t;
+typedef int nlink_t;
+typedef _Atomic int refcount_t;
+typedef unsigned int time_t;
+typedef unsigned int suseconds_t;
+
+#endif