Refactor for indiv. type headers; add IO buf/seek

include/stdio.h

@@ -13,13 +13,22 @@
 
 #include <sys/cdefs.h>
 
-#define __need_size_t
-#define __need_ssize_t
-#define __need_off_t
-#include <sys/types.h>
+#include <types/size_t.h>
+#include <types/ssize_t.h>
+#include <types/off_t.h>
+
+typedef unsigned long int fpos_t;
 
 #define EOF (-1)
 
+#define _IOFBF 01 /* IO fully buffered */
+#define _IOLBF 02 /* IO line buffered */
+#define _IONBF 04 /* IO not buffered */
+
+#define SEEK_CUR 01 /* Seek relative to current position */
+#define SEEK_END 02 /* Seek relative to end of file */
+#define SEEK_SET 04 /* Seek relative to start of file */
+
 int printf(const char * __restrict, ...);
 
 int putchar(int);