1/* 2 * Copyright (c) 2000-2012 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */ 29/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 30/* 31 * Copyright (c) 1982, 1986, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by the University of 45 * California, Berkeley and its contributors. 46 * 4. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)domain.h 8.1 (Berkeley) 6/2/93 63 * $FreeBSD: src/sys/sys/domain.h,v 1.14 1999/12/29 04:24:40 peter Exp $ 64 */ 65 66#ifndef _SYS_DOMAIN_H_ 67#define _SYS_DOMAIN_H_ 68 69#ifdef PRIVATE 70#include <sys/appleapiopts.h> 71#include <sys/cdefs.h> 72#ifdef KERNEL_PRIVATE 73#include <kern/locks.h> 74/* 75 * Structure per communications domain. 76 */ 77 78/* 79 * Forward structure declarations for function prototypes [sic]. 80 */ 81struct mbuf; 82 83#pragma pack(4) 84 85#ifdef XNU_KERNEL_PRIVATE 86/* 87 * Legacy domain. 88 * 89 * NOTE: Do not modify this structure, as there are modules outside of xnu 90 * which rely on the size and layout for binary compatibility. This structure 91 * is simply used by the exported net_{add,del}_domain_old, pffinddomain_old 92 * routines. Internally, domains are stored in the private variant of domain 93 * defined down below. 94 */ 95struct domain_old { 96#else 97struct domain { 98#endif /* !XNU_KERNEL_PRIVATE */ 99 int dom_family; /* AF_xxx */ 100 const char *dom_name; 101 void (*dom_init)(void); /* initialize domain data structures */ 102 int (*dom_externalize) /* externalize access rights */ 103 (struct mbuf *); 104 void (*dom_dispose) /* dispose of internalized rights */ 105 (struct mbuf *); 106#ifdef XNU_KERNEL_PRIVATE 107 struct protosw_old *dom_protosw; /* Chain of protosw's for AF */ 108 struct domain_old *dom_next; 109#else 110 struct protosw *dom_protosw; /* Chain of protosw's for AF */ 111 struct domain *dom_next; 112#endif /* !XNU_KERNEL_PRIVATE */ 113 int (*dom_rtattach) /* initialize routing table */ 114 (void **, int); 115 int dom_rtoffset; /* an arg to rtattach, in bits */ 116 int dom_maxrtkey; /* for routing layer */ 117 int dom_protohdrlen; /* len of protocol header */ 118 int dom_refs; /* # socreates outstanding */ 119 lck_mtx_t *dom_mtx; /* domain global mutex */ 120 uint32_t dom_flags; 121 uint32_t reserved[2]; 122}; 123 124#pragma pack() 125 126#ifdef XNU_KERNEL_PRIVATE 127/* 128 * Internal, private and extendable representation of domain. 129 */ 130struct domain { 131 int dom_family; /* AF_xxx */ 132 uint32_t dom_flags; /* domain flags (see below ) */ 133 uint32_t dom_refs; /* # socreates outstanding */ 134 lck_mtx_t *dom_mtx; /* domain global mutex */ 135 decl_lck_mtx_data(, dom_mtx_s); 136 TAILQ_ENTRY(domain) dom_entry; /* next domain in list */ 137 TAILQ_HEAD(, protosw) dom_protosw; /* protosw chain */ 138 void (*dom_init) /* initialize domain data structures */ 139 (struct domain *); 140 int (*dom_externalize) /* externalize access rights */ 141 (struct mbuf *); 142 void (*dom_dispose) /* dispose of internalized rights */ 143 (struct mbuf *); 144 int (*dom_rtattach) /* initialize routing table */ 145 (void **, int); 146 int dom_rtoffset; /* an arg to rtattach, in bits */ 147 int dom_maxrtkey; /* for routing layer */ 148 int dom_protohdrlen; /* len of protocol header */ 149 const char *dom_name; 150 struct domain_old *dom_old; /* domain pointer per net_add_domain */ 151}; 152 153extern TAILQ_HEAD(domains_head, domain) domains; 154extern struct domain *localdomain; 155#endif /* XNU_KERNEL_PRIVATE */ 156 157/* 158 * Values for dom_flags 159 */ 160#define DOM_REENTRANT 0x1 161#ifdef BSD_KERNEL_PRIVATE 162#define DOM_INITIALIZED 0x2 /* domain has been initialized */ 163#define DOM_ATTACHED 0x4 /* domain is in the global list */ 164#define DOM_OLD 0x10000000 /* domain added via net_add_domain */ 165 166/* pseudo-public domain flags */ 167#define DOMF_USERFLAGS (DOM_REENTRANT) 168#endif /* BSD_KERNEL_PRIVATE */ 169 170__BEGIN_DECLS 171#ifdef XNU_KERNEL_PRIVATE 172extern void net_add_domain_old(struct domain_old *dp); 173extern int net_del_domain_old(struct domain_old *); 174extern void net_drain_domains(void); 175extern void domain_proto_mtx_lock_assert_held(void); 176extern void domain_proto_mtx_lock_assert_notheld(void); 177struct domain_guard; 178typedef struct domain_guard *domain_guard_t; 179extern domain_guard_t domain_guard_deploy(void); 180extern void domain_guard_release(domain_guard_t); 181struct domain_unguard; 182typedef struct domain_unguard *domain_unguard_t; 183extern domain_unguard_t domain_unguard_deploy(void); 184extern void domain_unguard_release(domain_unguard_t); 185extern struct domain_old *pffinddomain_old(int); 186#else 187extern void net_add_domain(struct domain *dp); 188extern int net_del_domain(struct domain *); 189#endif /* XNU_KERNEL_PRIVATE */ 190extern struct domain *pffinddomain(int); 191__END_DECLS 192#endif /* KERNEL_PRIVATE */ 193#endif /* PRIVATE */ 194#endif /* _SYS_DOMAIN_H_ */ 195