1/* $OpenBSD: atomicio.h,v 1.12 2018/12/27 03:25:25 djm Exp $ */
2
3/*
4 * Copyright (c) 2006 Damien Miller.  All rights reserved.
5 * Copyright (c) 1995,1999 Theo de Raadt.  All rights reserved.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef _ATOMICIO_H
30#define _ATOMICIO_H
31
32struct iovec;
33
34/*
35 * Ensure all of data on socket comes through. f==read || f==vwrite
36 */
37size_t
38atomicio6(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n,
39    int (*cb)(void *, size_t), void *);
40size_t	atomicio(ssize_t (*)(int, void *, size_t), int, void *, size_t);
41
42#define vwrite (ssize_t (*)(int, void *, size_t))write
43
44/*
45 * ensure all of data on socket comes through. f==readv || f==writev
46 */
47size_t
48atomiciov6(ssize_t (*f) (int, const struct iovec *, int), int fd,
49    const struct iovec *_iov, int iovcnt, int (*cb)(void *, size_t), void *);
50size_t	atomiciov(ssize_t (*)(int, const struct iovec *, int),
51    int, const struct iovec *, int);
52
53#endif /* _ATOMICIO_H */
54