sockopt.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1982, 1986, 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 4. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)socketvar.h	8.3 (Berkeley) 2/19/95
32 *
33 * $FreeBSD: stable/11/sys/sys/sockopt.h 330897 2018-03-14 03:19:51Z eadler $
34 */
35#ifndef _SYS_SOCKOPT_H_
36#define _SYS_SOCKOPT_H_
37
38#ifndef _KERNEL
39#error "no user-servicable parts inside"
40#endif
41
42
43struct thread;
44struct socket;
45
46/*
47 * Argument structure for sosetopt et seq.  This is in the KERNEL
48 * section because it will never be visible to user code.
49 */
50enum sopt_dir { SOPT_GET, SOPT_SET };
51
52struct	sockopt {
53	enum	sopt_dir sopt_dir; /* is this a get or a set? */
54	int	sopt_level;	/* second arg of [gs]etsockopt */
55	int	sopt_name;	/* third arg of [gs]etsockopt */
56	void   *sopt_val;	/* fourth arg of [gs]etsockopt */
57	size_t	sopt_valsize;	/* (almost) fifth arg of [gs]etsockopt */
58	struct	thread *sopt_td; /* calling thread or null if kernel */
59};
60
61int	sosetopt(struct socket *so, struct sockopt *sopt);
62int	sogetopt(struct socket *so, struct sockopt *sopt);
63int	sooptcopyin(struct sockopt *sopt, void *buf, size_t len, size_t minlen);
64int	sooptcopyout(struct sockopt *sopt, const void *buf, size_t len);
65/* XXX; prepare mbuf for (__FreeBSD__ < 3) routines. */
66int	soopt_getm(struct sockopt *sopt, struct mbuf **mp);
67int	soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
68int	soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
69int	do_getopt_accept_filter(struct socket *so, struct sockopt *sopt);
70int	do_setopt_accept_filter(struct socket *so, struct sockopt *sopt);
71int	so_setsockopt(struct socket *so, int level, int optname,
72	    void *optval, size_t optlen);
73
74#endif /* _SYS_SOCKOPT_H_ */
75