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
38 typedef struct iovec iovec_t;
39 typedef enum uio_seg zfs_uio_seg_t;
40 typedef enum uio_rw zfs_uio_rw_t;
41
42 typedef 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
58 static inline void
zfs_uio_setoffset(zfs_uio_t * uio,offset_t off)59 zfs_uio_setoffset(zfs_uio_t *uio, offset_t off)
60 {
61 zfs_uio_offset(uio) = off;
62 }
63
64 static inline void
zfs_uio_advance(zfs_uio_t * uio,ssize_t size)65 zfs_uio_advance(zfs_uio_t *uio, ssize_t size)
66 {
67 zfs_uio_resid(uio) -= size;
68 zfs_uio_offset(uio) += size;
69 }
70
71 static __inline void
zfs_uio_init(zfs_uio_t * uio,struct uio * uio_s)72 zfs_uio_init(zfs_uio_t *uio, struct uio *uio_s)
73 {
74 GET_UIO_STRUCT(uio) = uio_s;
75 }
76
77 int 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