FreeBSD/Linux Kernel Cross Reference
sys/sys/un.h
1 /* $NetBSD: un.h,v 1.60 2021/08/08 20:54:49 nia Exp $ */
2
3 /*
4 * Copyright (c) 1982, 1986, 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 * @(#)un.h 8.3 (Berkeley) 2/19/95
32 */
33
34 #ifndef _SYS_UN_H_
35 #define _SYS_UN_H_
36
37 #include <sys/ansi.h>
38 #include <sys/featuretest.h>
39 #include <sys/types.h>
40
41 #ifndef sa_family_t
42 typedef __sa_family_t sa_family_t;
43 #define sa_family_t __sa_family_t
44 #endif
45
46 /*
47 * Definitions for UNIX IPC domain.
48 */
49 struct sockaddr_un {
50 uint8_t sun_len; /* total sockaddr length */
51 sa_family_t sun_family; /* AF_LOCAL */
52 char sun_path[104]; /* path name (gag) */
53 };
54
55 /*
56 * Socket options for UNIX IPC domain.
57 */
58 #if defined(_NETBSD_SOURCE)
59 #define SOL_LOCAL 0 /* options level for getsockopt(2) */
60 #define LOCAL_OCREDS 0x0001 /* pass credentials to receiver */
61 #define LOCAL_CONNWAIT 0x0002 /* connects block until accepted */
62 #define LOCAL_PEEREID 0x0003 /* get peer identification */
63 #define LOCAL_CREDS 0x0004 /* pass credentials to receiver */
64 #endif
65
66 /*
67 * Data automatically stored inside connect() for use by LOCAL_PEEREID
68 */
69 struct unpcbid {
70 pid_t unp_pid; /* process id */
71 uid_t unp_euid; /* effective user id */
72 gid_t unp_egid; /* effective group id */
73 };
74
75 #ifdef _KERNEL
76
77 struct unpcb;
78 struct socket;
79 struct sockopt;
80 struct sockaddr;
81
82 extern const struct pr_usrreqs unp_usrreqs;
83
84 int uipc_ctloutput(int, struct socket *, struct sockopt *);
85 void uipc_init(void);
86 kmutex_t *uipc_dgramlock(void);
87 kmutex_t *uipc_streamlock(void);
88 kmutex_t *uipc_rawlock(void);
89
90 int unp_connect(struct socket *, struct sockaddr *, struct lwp *);
91 int unp_connect2(struct socket *, struct socket *);
92 void unp_dispose(struct mbuf *);
93 int unp_externalize(struct mbuf *, struct lwp *, int);
94
95 #else /* !_KERNEL */
96
97 /* actual length of an initialized sockaddr_un */
98 #if defined(_NETBSD_SOURCE)
99 #define SUN_LEN(su) \
100 (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
101 #endif /* !_NetBSD_SOURCE */
102 #endif /* _KERNEL */
103
104 #endif /* !_SYS_UN_H_ */
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