Implementations of readv and writev

include/limits.h

@@ -104,7 +104,7 @@
 				 * be reliably traversed in the resolution of
 				 * a pathname in the absence of a loop.
 				 */
-
+#define IOV_MAX        INT_MAX  /* maximum number of buffers for readv/writev */
 #endif /* _POSIX_SOURCE */
 
 #endif /* _LIMITS_H */

include/sys/uio.h

@@ -15,11 +15,9 @@ struct iovec
 	size_t	iov_len;
 };
 
-#if 0
 _PROTOTYPE(ssize_t readv, (int _fildes, const struct iovec *_iov,
 							int _iovcnt)	);
 _PROTOTYPE(ssize_t writev, (int _fildes, const struct iovec *_iov,
 							int iovcnt)	);
-#endif
 
 #endif /* _SYS_UIO_H */