1 /* $NetBSD: un.h,v 1.61 2023/11/08 19:27:13 jschauma 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 * Historically, (struct sockaddr) needed to fit inside an mbuf. 48 * For this reason, UNIX domain sockets were therefore limited to 49 * 104 bytes. While this limit is no longer necessary, it is kept for 50 * binary compatibility reasons. 51 */ 52 #define SUNPATHLEN 104 53 54 /* 55 * Definitions for UNIX IPC domain. 56 */ 57 struct sockaddr_un { 58 uint8_t sun_len; /* total sockaddr length */ 59 sa_family_t sun_family; /* AF_LOCAL */ 60 char sun_path[SUNPATHLEN]; /* path name (gag) */ 61 }; 62 63 /* 64 * Socket options for UNIX IPC domain. 65 */ 66 #if defined(_NETBSD_SOURCE) 67 #define SOL_LOCAL 0 /* options level for getsockopt(2) */ 68 #define LOCAL_OCREDS 0x0001 /* pass credentials to receiver */ 69 #define LOCAL_CONNWAIT 0x0002 /* connects block until accepted */ 70 #define LOCAL_PEEREID 0x0003 /* get peer identification */ 71 #define LOCAL_CREDS 0x0004 /* pass credentials to receiver */ 72 #endif 73 74 /* 75 * Data automatically stored inside connect() for use by LOCAL_PEEREID 76 */ 77 struct unpcbid { 78 pid_t unp_pid; /* process id */ 79 uid_t unp_euid; /* effective user id */ 80 gid_t unp_egid; /* effective group id */ 81 }; 82 83 #ifdef _KERNEL 84 85 struct unpcb; 86 struct socket; 87 struct sockopt; 88 struct sockaddr; 89 90 extern const struct pr_usrreqs unp_usrreqs; 91 92 int uipc_ctloutput(int, struct socket *, struct sockopt *); 93 void uipc_init(void); 94 kmutex_t *uipc_dgramlock(void); 95 kmutex_t *uipc_streamlock(void); 96 kmutex_t *uipc_rawlock(void); 97 98 int unp_connect(struct socket *, struct sockaddr *, struct lwp *); 99 int unp_connect2(struct socket *, struct socket *); 100 void unp_dispose(struct mbuf *); 101 int unp_externalize(struct mbuf *, struct lwp *, int); 102 103 #else /* !_KERNEL */ 104 105 /* actual length of an initialized sockaddr_un */ 106 #if defined(_NETBSD_SOURCE) 107 #define SUN_LEN(su) \ 108 (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path)) 109 #endif /* !_NetBSD_SOURCE */ 110 #endif /* _KERNEL */ 111 112 #endif /* !_SYS_UN_H_ */ 113