1/*
2 * Copyright (c) 2010 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef _OPENSOLARIS_SYS_UIO_H_
30#define	_OPENSOLARIS_SYS_UIO_H_
31
32#ifndef _STANDALONE
33
34#include_next <sys/uio.h>
35#include <sys/_uio.h>
36#include <sys/debug.h>
37
38typedef	struct iovec	iovec_t;
39typedef	enum uio_seg	zfs_uio_seg_t;
40typedef	enum uio_rw	zfs_uio_rw_t;
41
42typedef struct zfs_uio {
43	struct uio	*uio;
44} zfs_uio_t;
45
46#define	GET_UIO_STRUCT(u)	(u)->uio
47#define	zfs_uio_segflg(u)	GET_UIO_STRUCT(u)->uio_segflg
48#define	zfs_uio_offset(u)	GET_UIO_STRUCT(u)->uio_offset
49#define	zfs_uio_resid(u)	GET_UIO_STRUCT(u)->uio_resid
50#define	zfs_uio_iovcnt(u)	GET_UIO_STRUCT(u)->uio_iovcnt
51#define	zfs_uio_iovlen(u, idx)	GET_UIO_STRUCT(u)->uio_iov[(idx)].iov_len
52#define	zfs_uio_iovbase(u, idx)	GET_UIO_STRUCT(u)->uio_iov[(idx)].iov_base
53#define	zfs_uio_td(u)		GET_UIO_STRUCT(u)->uio_td
54#define	zfs_uio_rw(u)		GET_UIO_STRUCT(u)->uio_rw
55#define	zfs_uio_fault_disable(u, set)
56#define	zfs_uio_prefaultpages(size, u)	(0)
57
58static inline void
59zfs_uio_setoffset(zfs_uio_t *uio, offset_t off)
60{
61	zfs_uio_offset(uio) = off;
62}
63
64static inline void
65zfs_uio_advance(zfs_uio_t *uio, size_t size)
66{
67	zfs_uio_resid(uio) -= size;
68	zfs_uio_offset(uio) += size;
69}
70
71static __inline void
72zfs_uio_init(zfs_uio_t *uio, struct uio *uio_s)
73{
74	GET_UIO_STRUCT(uio) = uio_s;
75}
76
77int zfs_uio_fault_move(void *p, size_t n, zfs_uio_rw_t dir, zfs_uio_t *uio);
78
79#endif /* !_STANDALONE */
80
81#endif	/* !_OPENSOLARIS_SYS_UIO_H_ */
82