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#ifndef _SYS_SOCKOPT_H_
32#define _SYS_SOCKOPT_H_
33
34#ifndef _KERNEL
35#error "no user-serviceable parts inside"
36#endif
37
38struct cap_rights;
39struct thread;
40struct socket;
41
42/*
43 * Argument structure for sosetopt et seq. This is in the KERNEL
44 * section because it will never be visible to user code.
45 */
46enum sopt_dir { SOPT_GET, SOPT_SET };
47
48struct sockopt {
49 enum sopt_dir sopt_dir; /* is this a get or a set? */
50 int sopt_level; /* second arg of [gs]etsockopt */
51 int sopt_name; /* third arg of [gs]etsockopt */
52 void *sopt_val; /* fourth arg of [gs]etsockopt */
53 size_t sopt_valsize; /* (almost) fifth arg of [gs]etsockopt */
54 const struct cap_rights *sopt_rights; /* Capsicum rights for the fd */
55 struct thread *sopt_td; /* calling thread or null if kernel */
56};
57
58int sosetopt(struct socket *so, struct sockopt *sopt);
59int sogetopt(struct socket *so, struct sockopt *sopt);
60int sooptcopyin(struct sockopt *sopt, void *buf, size_t len, size_t minlen);
61int sooptcopyout(struct sockopt *sopt, const void *buf, size_t len);
62int soopt_getm(struct sockopt *sopt, struct mbuf **mp);
63int soopt_mcopyin(struct sockopt *sopt, struct mbuf *m);
64int soopt_mcopyout(struct sockopt *sopt, struct mbuf *m);
65int accept_filt_getopt(struct socket *, struct sockopt *);
66int accept_filt_setopt(struct socket *, struct sockopt *);
67int so_setsockopt(struct socket *so, int level, int optname,
68 void *optval, size_t optlen);
69
70#endif /* _SYS_SOCKOPT_H_ */