source: rtems/cpukit/libnetworking/sys/uio.h @ dc28f16

4.104.114.84.95
Last change on this file since dc28f16 was dc28f16, checked in by Ralf Corsepius <ralf.corsepius@…>, on 04/20/04 at 12:28:19

Use -D_KERNEL instead of -DKERNEL for greater FreeBSD compliance.

  • Property mode set to 100644
File size: 2.9 KB
Line 
1/*
2 * Copyright (c) 1982, 1986, 1993, 1994
3 *      The Regents of the University of California.  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 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *      This product includes software developed by the University of
16 *      California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *      @(#)uio.h       8.5 (Berkeley) 2/22/94
34 * $Id$
35 */
36
37#ifndef _SYS_UIO_H_
38#define _SYS_UIO_H_
39
40/*
41 * XXX
42 * iov_base should be a void *.
43 */
44struct iovec {
45        char    *iov_base;      /* Base address. */
46        size_t   iov_len;       /* Length. */
47};
48
49enum    uio_rw { UIO_READ, UIO_WRITE };
50
51/* Segment flag values. */
52enum uio_seg {
53        UIO_USERSPACE,          /* from user data space */
54        UIO_SYSSPACE,           /* from system space */
55        UIO_USERISPACE,         /* from user I space */
56        UIO_NOCOPY              /* don't copy, already in object */
57};
58
59#ifdef _KERNEL
60struct uio {
61        struct  iovec *uio_iov;
62        int     uio_iovcnt;
63        off_t   uio_offset;
64        int     uio_resid;
65        enum    uio_seg uio_segflg;
66        enum    uio_rw uio_rw;
67        struct  proc *uio_procp;
68};
69
70/*
71 * Limits
72 */
73#define UIO_MAXIOV      1024            /* max 1K of iov's */
74#define UIO_SMALLIOV    8               /* 8 on stack, else malloc */
75#endif /* _KERNEL */
76
77#ifdef _KERNEL
78
79int     uiomove __P((caddr_t, int, struct uio *));
80
81#else /* !_KERNEL */
82
83#include <sys/cdefs.h>
84
85__BEGIN_DECLS
86ssize_t readv __P((int, const struct iovec *, int));
87ssize_t writev __P((int, const struct iovec *, int));
88__END_DECLS
89
90#endif /* _KERNEL */
91
92#endif /* !_SYS_UIO_H_ */
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