1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * Portions of this source code were derived from Berkeley 4.3 BSD 32 * under license from the Regents of the University of California. 33 */ 34 35 #ifndef _SYS_SOCKET_IMPL_H 36 #define _SYS_SOCKET_IMPL_H 37 38 #pragma ident "%Z%%M% %I% %E% SMI" 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 #ifndef _SA_FAMILY_T 45 #define _SA_FAMILY_T 46 typedef uint16_t sa_family_t; 47 #endif 48 49 /* 50 * Structure used by kernel to store most 51 * addresses. 52 */ 53 struct sockaddr { 54 sa_family_t sa_family; /* address family */ 55 char sa_data[14]; /* up to 14 bytes of direct address */ 56 }; 57 58 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 59 #include <sys/un.h> 60 #include <net/if_dl.h> 61 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 62 63 #if !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) 64 /* 65 * sockaddr_storage: 66 * Common superset of at least AF_INET, AF_INET6 and AF_LINK sockaddr 67 * structures. Has sufficient size and alignment for those sockaddrs. 68 */ 69 70 /* 71 * Desired maximum size, alignment size and related types. 72 */ 73 #define _SS_MAXSIZE 256 /* Implementation specific max size */ 74 75 /* 76 * To represent desired sockaddr max alignment for platform, a 77 * type is chosen which may depend on implementation platform architecture. 78 * Type chosen based on alignment size restrictions from <sys/isa_defs.h>. 79 * We desire to force up to (but no more than) 64-bit (8 byte) alignment, 80 * on platforms where it is possible to do so. (e.g not possible on ia32). 81 * For all currently supported platforms by our implementation 82 * in <sys/isa_defs.h>, (i.e. sparc, sparcv9, ia32, ia64) 83 * type "double" is suitable for that intent. 84 * 85 * Note: Type "double" is chosen over the more obvious integer type int64_t. 86 * int64_t is not a valid type for strict ANSI/ISO C compilation on ILP32. 87 */ 88 typedef double sockaddr_maxalign_t; 89 90 #define _SS_ALIGNSIZE (sizeof (sockaddr_maxalign_t)) 91 92 /* 93 * Definitions used for sockaddr_storage structure paddings design. 94 */ 95 #define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof (sa_family_t)) 96 #define _SS_PAD2SIZE (_SS_MAXSIZE - (sizeof (sa_family_t)+ \ 97 _SS_PAD1SIZE + _SS_ALIGNSIZE)) 98 99 struct sockaddr_storage { 100 sa_family_t ss_family; /* Address family */ 101 /* Following fields are implementation specific */ 102 char _ss_pad1[_SS_PAD1SIZE]; 103 sockaddr_maxalign_t _ss_align; 104 char _ss_pad2[_SS_PAD2SIZE]; 105 }; 106 #endif /* !defined(_XPG4_2) || defined(_XPG6) || defined(__EXTENSIONS__) */ 107 108 #ifdef __cplusplus 109 } 110 #endif 111 112 #endif /* _SYS_SOCKET_IMPL_H */ 113