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/*
* Copyright (c) 1982, 1986, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)uio.h 8.5 (Berkeley) 2/22/94
* $Id: uio.h,v 1.9 1998/01/06 05:23:00 dyson Exp $
*/
#ifndef _SYS_UIO_H_
#define _SYS_UIO_H_
/*
* XXX
* iov_base should be a void *.
*/
struct iovec {
char *iov_base; /* Base address. */
size_t iov_len; /* Length. */
};
enum uio_rw { UIO_READ, UIO_WRITE };
/* Segment flag values. */
enum uio_seg {
UIO_USERSPACE, /* from user data space */
UIO_SYSSPACE, /* from system space */
UIO_USERISPACE, /* from user I space */
UIO_NOCOPY /* don't copy, already in object */
};
#ifdef KERNEL
struct uio {
struct iovec *uio_iov;
int uio_iovcnt;
off_t uio_offset;
int uio_resid;
enum uio_seg uio_segflg;
enum uio_rw uio_rw;
struct proc *uio_procp;
};
/*
* Limits
*/
#define UIO_MAXIOV 1024 /* max 1K of iov's */
#define UIO_SMALLIOV 8 /* 8 on stack, else malloc */
struct vm_object;
int uiomove __P((caddr_t, int, struct uio *));
int uiomoveco __P((caddr_t, int, struct uio *, struct vm_object *));
int uioread __P((int, struct uio *, struct vm_object *, int *));
#else /* !KERNEL */
#include <sys/cdefs.h>
__BEGIN_DECLS
ssize_t readv __P((int, const struct iovec *, int));
ssize_t writev __P((int, const struct iovec *, int));
__END_DECLS
#endif /* KERNEL */
#endif /* !_SYS_UIO_H_ */