1 files changed, 5 insertions, 0 deletions
diff --git a/include/unistd.h b/include/unistd.h
index d271809a..21822aed 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -14,6 +14,11 @@
 #define STDOUT_FILENO 1
 #define STDERR_FILENO 2
 
+#define F_OK 0
+#define X_OK 1
+#define W_OK 2
+#define R_OK 4
+
 typedef __SIZE_TYPE__ size_t;
 typedef __INT64_TYPE__ ssize_t;
 typedef __UINT32_TYPE__ uid_t;