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1c79356b | 1 | /* |
6d2010ae | 2 | * Copyright (c) 2008-2010 Apple Inc. All rights reserved. |
5d5c5d0d | 3 | * |
2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
0a7de745 | 5 | * |
2d21ac55 A |
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. | |
0a7de745 | 14 | * |
2d21ac55 A |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
0a7de745 | 17 | * |
2d21ac55 A |
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 | |
8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
2d21ac55 A |
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. | |
0a7de745 | 25 | * |
2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
1c79356b A |
27 | */ |
28 | /* | |
29 | * Copyright (c) 1982, 1986, 1989, 1993 | |
30 | * The Regents of the University of California. All rights reserved. | |
31 | * | |
32 | * Redistribution and use in source and binary forms, with or without | |
33 | * modification, are permitted provided that the following conditions | |
34 | * are met: | |
35 | * 1. Redistributions of source code must retain the above copyright | |
36 | * notice, this list of conditions and the following disclaimer. | |
37 | * 2. Redistributions in binary form must reproduce the above copyright | |
38 | * notice, this list of conditions and the following disclaimer in the | |
39 | * documentation and/or other materials provided with the distribution. | |
40 | * 3. All advertising materials mentioning features or use of this software | |
41 | * must display the following acknowledgement: | |
42 | * This product includes software developed by the University of | |
43 | * California, Berkeley and its contributors. | |
44 | * 4. Neither the name of the University nor the names of its contributors | |
45 | * may be used to endorse or promote products derived from this software | |
46 | * without specific prior written permission. | |
47 | * | |
48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
58 | * SUCH DAMAGE. | |
59 | * | |
60 | * @(#)unpcb.h 8.1 (Berkeley) 6/2/93 | |
61 | */ | |
62 | ||
63 | #ifndef _SYS_UNPCB_H_ | |
64 | #define _SYS_UNPCB_H_ | |
65 | ||
9bccf70c | 66 | #include <sys/appleapiopts.h> |
1c79356b A |
67 | #include <sys/queue.h> |
68 | #include <sys/un.h> | |
91447636 | 69 | #include <sys/ucred.h> |
5ba3f43e | 70 | #include <sys/socketvar.h> |
1c79356b A |
71 | |
72 | /* | |
73 | * Protocol control block for an active | |
74 | * instance of a UNIX internal protocol. | |
75 | * | |
76 | * A socket may be associated with an vnode in the | |
77 | * file system. If so, the unp_vnode pointer holds | |
78 | * a reference count to this vnode, which should be irele'd | |
79 | * when the socket goes away. | |
80 | * | |
81 | * A socket may be connected to another socket, in which | |
82 | * case the control block of the socket to which it is connected | |
83 | * is given by unp_conn. | |
84 | * | |
85 | * A socket may be referenced by a number of sockets (e.g. several | |
86 | * sockets may be connected to a datagram socket.) These sockets | |
87 | * are in a linked list starting with unp_refs, linked through | |
88 | * unp_nextref and null-terminated. Note that a socket may be referenced | |
89 | * by a number of other sockets and may also reference a socket (not | |
90 | * necessarily one which is referencing it). This generates | |
91 | * the need for unp_refs and unp_nextref to be separate fields. | |
92 | * | |
93 | * Stream sockets keep copies of receive sockbuf sb_cc and sb_mbcnt | |
94 | * so that changes in the sockbuf may be computed to modify | |
95 | * back pressure on the sender accordingly. | |
96 | */ | |
91447636 A |
97 | |
98 | typedef u_quad_t unp_gen_t; | |
99 | ||
2d21ac55 A |
100 | #if defined(__LP64__) |
101 | struct _unpcb_list_entry { | |
0a7de745 A |
102 | u_int32_t le_next; |
103 | u_int32_t le_prev; | |
2d21ac55 | 104 | }; |
0a7de745 A |
105 | #define _UCPCB_LIST_HEAD(name, type) \ |
106 | struct name { \ | |
107 | u_int32_t lh_first; \ | |
108 | }; | |
109 | #define _UNPCB_LIST_ENTRY(x) struct _unpcb_list_entry | |
110 | #define _UNPCB_PTR(x) u_int32_t | |
111 | #else | |
112 | #define _UCPCB_LIST_HEAD(name, type) LIST_HEAD(name, type) | |
113 | #define _UNPCB_LIST_ENTRY(x) LIST_ENTRY(x) | |
114 | #define _UNPCB_PTR(x) x | |
2d21ac55 A |
115 | #endif |
116 | ||
91447636 | 117 | #ifdef PRIVATE |
b0d623f7 | 118 | #ifndef KERNEL |
2d21ac55 | 119 | _UCPCB_LIST_HEAD(unp_head, unpcb); |
b0d623f7 A |
120 | #else |
121 | LIST_HEAD(unp_head, unpcb); | |
91447636 | 122 | #define sotounpcb(so) ((struct unpcb *)((so)->so_pcb)) |
1c79356b | 123 | |
0a7de745 A |
124 | struct unpcb { |
125 | LIST_ENTRY(unpcb) unp_link; /* glue on list of all PCBs */ | |
126 | struct socket *unp_socket; /* pointer back to socket */ | |
127 | struct vnode *unp_vnode; /* if associated with file */ | |
128 | ino_t unp_ino; /* fake inode number */ | |
129 | struct unpcb *unp_conn; /* control block of connected socket */ | |
130 | struct unp_head unp_refs; /* referencing socket linked list */ | |
131 | LIST_ENTRY(unpcb) unp_reflink; /* link in unp_refs list */ | |
132 | struct sockaddr_un *unp_addr; /* bound address of socket */ | |
133 | int unp_cc; /* copy of rcv.sb_cc */ | |
134 | int unp_mbcnt; /* copy of rcv.sb_mbcnt */ | |
135 | unp_gen_t unp_gencnt; /* generation count of this instance */ | |
136 | int unp_flags; /* flags */ | |
137 | struct xucred unp_peercred; /* peer credentials, if applicable */ | |
138 | decl_lck_mtx_data(, unp_mtx); /* per unpcb lock */ | |
139 | int rw_thrcount; /* disconnect should wait for this count to become zero */ | |
1c79356b | 140 | }; |
91447636 | 141 | #endif /* KERNEL */ |
1c79356b | 142 | |
91447636 A |
143 | /* |
144 | * Flags in unp_flags. | |
145 | * | |
146 | * UNP_HAVEPC - indicates that the unp_peercred member is filled in | |
147 | * and is really the credentials of the connected peer. This is used | |
148 | * to determine whether the contents should be sent to the user or | |
149 | * not. | |
150 | * | |
151 | * UNP_HAVEPCCACHED - indicates that the unp_peercred member is filled | |
152 | * in, but does *not* contain the credentials of the connected peer | |
153 | * (there may not even be a peer). This is set in unp_listen() when | |
154 | * it fills in unp_peercred for later consumption by unp_connect(). | |
155 | */ | |
0a7de745 A |
156 | #define UNP_HAVEPC 0x0001 |
157 | #define UNP_HAVEPCCACHED 0x0002 | |
158 | #define UNP_DONTDISCONNECT 0x0004 | |
159 | #define UNP_TRACE_MDNS 0x1000 | |
91447636 A |
160 | |
161 | #ifdef KERNEL | |
162 | struct unpcb_compat { | |
163 | #else /* KERNEL */ | |
164 | #define unpcb_compat unpcb | |
0a7de745 | 165 | struct unpcb { |
91447636 | 166 | #endif /* KERNEL */ |
0a7de745 A |
167 | _UNPCB_LIST_ENTRY(unpcb_compat) unp_link; /* glue on list of all PCBs */ |
168 | _UNPCB_PTR(struct socket *) unp_socket; /* pointer back to socket */ | |
169 | _UNPCB_PTR(struct vnode *) unp_vnode; /* if associated with file */ | |
170 | u_int32_t unp_ino; /* fake inode number */ | |
171 | _UNPCB_PTR(struct unpcb_compat *) unp_conn; /* control block of connected socket */ | |
b0d623f7 | 172 | #if defined(KERNEL) |
0a7de745 | 173 | u_int32_t unp_refs; |
b0d623f7 | 174 | #else |
0a7de745 | 175 | struct unp_head unp_refs; /* referencing socket linked list */ |
b0d623f7 | 176 | #endif |
0a7de745 A |
177 | _UNPCB_LIST_ENTRY(unpcb_compat) unp_reflink; /* link in unp_refs list */ |
178 | _UNPCB_PTR(struct sockaddr_un *) unp_addr; /* bound address of socket */ | |
179 | int unp_cc; /* copy of rcv.sb_cc */ | |
180 | int unp_mbcnt; /* copy of rcv.sb_mbcnt */ | |
181 | unp_gen_t unp_gencnt; /* generation count of this instance */ | |
91447636 | 182 | }; |
1c79356b A |
183 | |
184 | /* Hack alert -- this structure depends on <sys/socketvar.h>. */ | |
91447636 | 185 | #ifdef _SYS_SOCKETVAR_H_ |
2d21ac55 A |
186 | |
187 | #pragma pack(4) | |
188 | ||
91447636 | 189 | struct xunpcb { |
0a7de745 A |
190 | u_int32_t xu_len; /* length of this structure */ |
191 | _UNPCB_PTR(struct unpcb_compat *) xu_unpp; /* to help netstat, fstat */ | |
192 | struct unpcb_compat xu_unp; /* our information */ | |
2d21ac55 | 193 | union { |
0a7de745 A |
194 | struct sockaddr_un xuu_addr; /* our bound address */ |
195 | char xu_dummy1[256]; | |
2d21ac55 | 196 | } xu_au; |
91447636 | 197 | #define xu_addr xu_au.xuu_addr |
2d21ac55 | 198 | union { |
0a7de745 A |
199 | struct sockaddr_un xuu_caddr; /* their bound address */ |
200 | char xu_dummy2[256]; | |
2d21ac55 | 201 | } xu_cau; |
91447636 | 202 | #define xu_caddr xu_cau.xuu_caddr |
0a7de745 A |
203 | struct xsocket xu_socket; |
204 | u_quad_t xu_alignment_hack; | |
1c79356b | 205 | }; |
2d21ac55 | 206 | |
5ba3f43e | 207 | #if !CONFIG_EMBEDDED |
b0d623f7 A |
208 | |
209 | struct xunpcb64_list_entry { | |
0a7de745 A |
210 | u_int64_t le_next; |
211 | u_int64_t le_prev; | |
b0d623f7 A |
212 | }; |
213 | ||
214 | struct xunpcb64 { | |
0a7de745 A |
215 | u_int32_t xu_len; /* length of this structure */ |
216 | u_int64_t xu_unpp; /* to help netstat, fstat */ | |
217 | struct xunpcb64_list_entry xunp_link; /* glue on list of all PCBs */ | |
218 | u_int64_t xunp_socket; /* pointer back to socket */ | |
219 | u_int64_t xunp_vnode; /* if associated with file */ | |
220 | u_int64_t xunp_ino; /* fake inode number */ | |
221 | u_int64_t xunp_conn; /* control block of connected socket */ | |
222 | u_int64_t xunp_refs; /* referencing socket linked list */ | |
223 | struct xunpcb64_list_entry xunp_reflink; /* link in unp_refs list */ | |
224 | int xunp_cc; /* copy of rcv.sb_cc */ | |
225 | int xunp_mbcnt; /* copy of rcv.sb_mbcnt */ | |
226 | unp_gen_t xunp_gencnt; /* generation count of this instance */ | |
227 | int xunp_flags; /* flags */ | |
228 | union { | |
229 | struct sockaddr_un xuu_addr; | |
230 | char xu_dummy1[256]; | |
231 | } xu_au; /* our bound address */ | |
b0d623f7 | 232 | #define xunp_addr xu_au.xuu_addr |
0a7de745 A |
233 | union { |
234 | struct sockaddr_un xuu_caddr; | |
235 | char xu_dummy2[256]; | |
236 | } xu_cau; /* their bound address */ | |
b0d623f7 | 237 | #define xunp_caddr xu_cau.xuu_caddr |
0a7de745 | 238 | struct xsocket64 xu_socket; |
b0d623f7 A |
239 | }; |
240 | ||
5ba3f43e | 241 | #endif /* !CONFIG_EMBEDDED */ |
b0d623f7 | 242 | |
2d21ac55 A |
243 | #pragma pack() |
244 | ||
91447636 | 245 | #endif /* _SYS_SOCKETVAR_H_ */ |
b0d623f7 | 246 | |
91447636 | 247 | #endif /* PRIVATE */ |
1c79356b | 248 | |
0a7de745 A |
249 | struct xunpgen { |
250 | u_int32_t xug_len; | |
251 | u_int xug_count; | |
252 | unp_gen_t xug_gen; | |
253 | so_gen_t xug_sogen; | |
1c79356b | 254 | }; |
1c79356b A |
255 | |
256 | #endif /* _SYS_UNPCB_H_ */ |