1 files changed, 8 insertions, 0 deletions

diff --git a/uisimulator/x11/file.h b/uisimulator/x11/file.h
index 7ea72580ad..76ddd6b8bb 100644
--- a/uisimulator/x11/file.h
+++ b/uisimulator/x11/file.h
@@ -17,8 +17,16 @@
  *
  ****************************************************************************/
 
+#include <stdio.h>
 #include <sys/types.h>
 
+int x11_open(char *name, int opts);
+
 #define open(x,y) x11_open(x,y)
 
 #include "../../firmware/common/file.h"
+
+extern int open(char* pathname, int flags);
+extern int close(int fd);
+extern int read(int fd, void* buf, int count);
+extern int lseek(int fd, int offset, int whence);