add some new linux AT_* flags

include/fcntl.h

@@ -59,6 +59,8 @@ int posix_fallocate(int, off_t, off_t);
 #define AT_REMOVEDIR 0x200
 #define AT_SYMLINK_FOLLOW 0x400
 #define AT_EACCESS 0x200
+#define AT_NO_AUTOMOUNT 0x800
+#define AT_EMPTY_PATH 0x1000
 
 #define POSIX_FADV_NORMAL     0
 #define POSIX_FADV_RANDOM     1