diff --git a/cpu/6502/6502def.h b/cpu/6502/6502def.h
index 3700e62f1..a42f561ad 100644
--- a/cpu/6502/6502def.h
+++ b/cpu/6502/6502def.h
@@ -30,7 +30,7 @@
  *
  * Author: Oliver Schmidt <ol.sc@web.de>
  *
- * @(#)$Id: 6502def.h,v 1.6 2007/12/23 13:55:38 oliverschmidt Exp $
+ * @(#)$Id: 6502def.h,v 1.7 2007/12/23 15:29:19 oliverschmidt Exp $
  */
 
 #ifndef __6502DEF_H__
@@ -38,6 +38,8 @@
 
 #include <ctype.h>
 #include <conio.h>
+#include <fcntl.h>
+#include <unistd.h>
 #include <stdint.h>
 
 /* These names are deprecated, use C99 names. */
@@ -104,4 +106,12 @@ typedef unsigned short uip_stats_t;
 #define ctk_arch_getkey   cgetc
 #define ctk_arch_isprint  isprint
 
+#define CFS_READ  (O_RDONLY)
+#define CFS_WRITE (O_CREAT | O_TRUNC | O_RDWR)
+
+#define cfs_open  open
+#define cfs_close close
+#define cfs_read  read
+#define cfs_write write
+
 #endif /* __6502DEF_H__ */
diff --git a/cpu/6502/Makefile.6502 b/cpu/6502/Makefile.6502
index 073a54077..c11e10c80 100644
--- a/cpu/6502/Makefile.6502
+++ b/cpu/6502/Makefile.6502
@@ -30,7 +30,7 @@
 #
 # Author: Oliver Schmidt <ol.sc@web.de>
 #
-# $Id: Makefile.6502,v 1.24 2007/12/21 01:36:35 oliverschmidt Exp $
+# $Id: Makefile.6502,v 1.25 2007/12/23 15:29:19 oliverschmidt Exp $
 #
 
 ifndef CONTIKI
@@ -60,8 +60,7 @@ CONTIKI_CPU_SOURCEFILES    = log.c error.c config.c clock.c ctk-mouse.c \
                              mtarch.c mtarch-asm.S lc-asm.S \
                              uip_arch.c ethernet-drv.c ethernet.c
 
-CONTIKI_SOURCEFILES += cfs-posix.c cfs-posix-dir.c \
-                       $(CTK) ctk-conio.c petsciiconv.c \
+CONTIKI_SOURCEFILES += $(CTK) ctk-conio.c petsciiconv.c cfs-posix-dir.c \
                        $(CONTIKI_TARGET_SOURCEFILES) $(CONTIKI_CPU_SOURCEFILES)
                        
 TARGET_STARTFILES = $(TARGET).o --start-group
diff --git a/platform/apple2enh/contiki-main.c b/platform/apple2enh/contiki-main.c
index 1eb800644..14cf47cb7 100644
--- a/platform/apple2enh/contiki-main.c
+++ b/platform/apple2enh/contiki-main.c
@@ -30,7 +30,7 @@
  * 
  * Author: Oliver Schmidt <ol.sc@web.de>
  *
- * $Id: contiki-main.c,v 1.13 2007/12/23 12:35:38 oliverschmidt Exp $
+ * $Id: contiki-main.c,v 1.14 2007/12/23 15:29:51 oliverschmidt Exp $
  */
 
 #include "contiki-net.h"
@@ -58,12 +58,6 @@ PROCINIT(&etimer_process,
 
 void clock_update(void);
 
-/*-----------------------------------------------------------------------------------*/
-long int
-lseek(void)
-{
-  return -1;
-}
 /*-----------------------------------------------------------------------------------*/
 void
 main(void)
diff --git a/platform/c64/contiki-main.c b/platform/c64/contiki-main.c
index c2dd36c5b..90e79593f 100644
--- a/platform/c64/contiki-main.c
+++ b/platform/c64/contiki-main.c
@@ -30,7 +30,7 @@
  * 
  * Author: Oliver Schmidt <ol.sc@web.de>
  *
- * $Id: contiki-main.c,v 1.14 2007/12/23 12:35:03 oliverschmidt Exp $
+ * $Id: contiki-main.c,v 1.15 2007/12/23 15:30:22 oliverschmidt Exp $
  */
 
 #include <string.h>
@@ -58,12 +58,6 @@ PROCINIT(&etimer_process,
 	 RESOLV_PROCESS
 	 &tcpip_process);
 
-/*-----------------------------------------------------------------------------------*/
-long int
-lseek(void)
-{
-  return -1;
-}
 /*-----------------------------------------------------------------------------------*/
 void *
 opendir(void)