
/*
 * @(#)uio.h	1.1 (National Semiconductor) 8/4/87 13:39:33
 * @(#) copyrights and other release restrictions may apply
 */

#ifndef _UIO_
#define	_UIO_

struct iovec {
	caddr_t	iov_base;
	int	iov_len;
};

struct uio {
	struct	iovec *uio_iov;
	int	uio_iovcnt;
	int	uio_offset;
	int	uio_segflg;
	int	uio_resid;
};

enum	uio_rw { UIO_READ, UIO_WRITE };

/*
 * Segment flag values (should be enum).
 */
#define UIO_USERSPACE	0		/* from user data space */
#define UIO_SYSSPACE	1		/* from system space */
#define UIO_USERISPACE	2		/* from user I space */
#endif
