+#define AT_SYMLINK_FOLLOW 0b0000
+#define AT_SYMLINK_NOFOLLOW 0b0001
+#define AT_FDCWD 0b0010
+#define AT_EACCESS 0b0100
+
+#define R_OK 0b100100100
+#define W_OK 0b010010010
+#define X_OK 0b001001001
+#define F_OK 0b111111111
+
+/* Mount with read-only flag */
+#define MNT_RO (1 << 0)
+
+/* Mount with block-cache-disabled flag */
+#define MNT_NC (1 << 1)
+
+typedef unsigned int mode_t;
+typedef unsigned int nlink_t;