1 files changed, 8 insertions, 2 deletions
diff --git a/os/src/close.c b/os/src/close.c
index aa4002b..90b22ed 100644
--- a/os/src/close.c
+++ b/os/src/close.c
@@ -1,7 +1,13 @@
 #include <reent.h>
 #include <osdebug.h>
+#include <errno.h>
+#include "fio.h"
 
 int _close_r(struct _reent * reent, int fd) {
-    DBGOUT("_close_r(%p, %d)\r\n", reent, fd);
-    return 0;
+    if (!fio_is_open(fd)) {
+        reent->_errno = EBADF;
+        return -1;
+    }
+    
+    return fio_close(fd);
 }