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 * 3. 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#ifndef _SYS_SOCKOPT_H_
34#define _SYS_SOCKOPT_H_
35
36#ifndef _KERNEL
37#error "no user-serviceable parts inside"
38#endif
39
40struct cap_rights;
41struct thread;
42struct socket;
43
44/*
45 * Argument structure for sosetopt et seq.  This is in the KERNEL
46 * section because it will never be visible to user code.
47 */
48enum sopt_dir { SOPT_GET, SOPT_SET };
49
50struct	sockopt {
51	enum	sopt_dir sopt_dir; /* is this a get or a set? */
52	int	sopt_level;	/* second arg of [gs]etsockopt */
53	int	sopt_name;	/* third arg of [gs]etsockopt */
54	void   *sopt_val;	/* fourth arg of [gs]etsockopt */
55	size_t	sopt_valsize;	/* (almost) fifth arg of [gs]etsockopt */
56	const struct cap_rights *sopt_rights; /* Capsicum rights for the fd */
57	struct	thread *sopt_td; /* calling thread or null if kernel */
58};
59
60int	sosetopt(struct socket *so, struct sockopt *sopt);
61int	sogetopt(struct socket *so, struct sockopt *sopt);
62int	sooptcopyin(struct sockopt *sopt, void *buf, size_t len, size_t minlen);
63int	sooptcopyout(struct sockopt *sopt, const void *buf, size_t len);
64int	soopt_getm(struct sockopt *sopt, struct mbuf **mp);
65int	soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
66int	soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
67int	accept_filt_getopt(struct socket *, struct sockopt *);
68int	accept_filt_setopt(struct socket *, struct sockopt *);
69int	so_setsockopt(struct socket *so, int level, int optname,
70	    void *optval, size_t optlen);
71
72#endif /* _SYS_SOCKOPT_H_ */