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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1982, 1986, 1993, 1994
28: * The Regents of the University of California. All rights reserved.
29: *
30: * Redistribution and use in source and binary forms, with or without
31: * modification, are permitted provided that the following conditions
32: * are met:
33: * 1. Redistributions of source code must retain the above copyright
34: * notice, this list of conditions and the following disclaimer.
35: * 2. Redistributions in binary form must reproduce the above copyright
36: * notice, this list of conditions and the following disclaimer in the
37: * documentation and/or other materials provided with the distribution.
38: * 3. All advertising materials mentioning features or use of this software
39: * must display the following acknowledgement:
40: * This product includes software developed by the University of
41: * California, Berkeley and its contributors.
42: * 4. Neither the name of the University nor the names of its contributors
43: * may be used to endorse or promote products derived from this software
44: * without specific prior written permission.
45: *
46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56: * SUCH DAMAGE.
57: *
58: * @(#)uio.h 8.5 (Berkeley) 2/22/94
59: */
60:
61: #ifndef _SYS_UIO_H_
62: #define _SYS_UIO_H_
63:
64: /*
65: * XXX
66: * iov_base should be a void *.
67: */
68: struct iovec {
69: char *iov_base; /* Base address. */
70: size_t iov_len; /* Length. */
71: };
72:
73: enum uio_rw { UIO_READ, UIO_WRITE };
74:
75: /* Segment flag values. */
76: enum uio_seg {
77: UIO_USERSPACE, /* from user data space */
78: UIO_USERISPACE, /* from user I space */
79: UIO_SYSSPACE /* from system space */
80: };
81:
82: #ifdef _KERNEL
83: struct uio {
84: struct iovec *uio_iov;
85: int uio_iovcnt;
86: off_t uio_offset;
87: int uio_resid;
88: enum uio_seg uio_segflg;
89: enum uio_rw uio_rw;
90: struct proc *uio_procp;
91: };
92:
93: /*
94: * Limits
95: */
96: #define UIO_MAXIOV 1024 /* max 1K of iov's */
97: #define UIO_SMALLIOV 8 /* 8 on stack, else malloc */
98:
99: extern int uiomove __P((caddr_t cp, int n, struct uio *uio));
100: extern int ureadc __P((int c, struct uio *uio));
101: extern int uwritec __P((struct uio *uio));
102:
103: #endif /* _KERNEL */
104:
105: #ifndef _KERNEL
106: #include <sys/cdefs.h>
107:
108: __BEGIN_DECLS
109: ssize_t readv __P((int, const struct iovec *, int));
110: ssize_t writev __P((int, const struct iovec *, int));
111: __END_DECLS
112: #endif /* !_KERNEL */
113: #endif /* !_SYS_UIO_H_ */
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