#define ELOOP 249 /* Too many symbolic links encountered */
#define ENOSYS 251 /* Function not implemented */
-#define ENOTSUP 252 /* Function not implemented (POSIX.4 / HPUX) */
#define ECANCELLED 253 /* aio request was canceled before complete (POSIX.4 / HPUX) */
#define ECANCELED ECANCELLED /* SuSv3 and Solaris wants one 'L' */