1 socket.h |
1 // © Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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2 |
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3 /*- |
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4 * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994 |
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5 * The Regents of the University of California. All rights reserved. |
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6 * © Portions copyright (c) 2007 Symbian Software Ltd. All rights reserved. |
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7 * Redistribution and use in source and binary forms, with or without |
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8 * modification, are permitted provided that the following conditions |
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9 * are met: |
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10 * 1. Redistributions of source code must retain the above copyright |
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11 * notice, this list of conditions and the following disclaimer. |
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12 * 2. Redistributions in binary form must reproduce the above copyright |
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13 * notice, this list of conditions and the following disclaimer in the |
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14 * documentation and/or other materials provided with the distribution. |
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15 * 4. Neither the name of the University nor the names of its contributors |
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16 * may be used to endorse or promote products derived from this software |
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17 * without specific prior written permission. |
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18 * |
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19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 * SUCH DAMAGE. |
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30 * |
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31 * @(#)socket.h 8.4 (Berkeley) 2/21/94 |
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32 * $FreeBSD: src/sys/sys/socket.h,v 1.88.2.1 2005/09/27 21:14:10 rwatson Exp $ |
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33 */ |
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34 |
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35 #ifndef _SYS_SOCKET_H_ |
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36 #define _SYS_SOCKET_H_ |
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37 |
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38 #include <sys/cdefs.h> |
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39 #include <sys/types.h> |
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40 #include <sys/_types.h> |
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41 #include <sys/_iovec.h> |
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42 #define _NO_NAMESPACE_POLLUTION |
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43 #include <machine/param.h> |
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44 #undef _NO_NAMESPACE_POLLUTION |
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45 |
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46 /* |
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47 * Definitions related to sockets: types, address families, options. |
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48 */ |
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49 |
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50 /* |
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51 * Data types. |
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52 */ |
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53 #if __BSD_VISIBLE |
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54 #ifndef _GID_T_DECLARED |
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55 typedef __gid_t gid_t; |
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56 #define _GID_T_DECLARED |
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57 #endif |
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58 |
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59 #ifndef _OFF_T_DECLARED |
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60 typedef __off_t off_t; |
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61 #define _OFF_T_DECLARED |
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62 #endif |
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63 |
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64 #ifndef _PID_T_DECLARED |
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65 typedef __pid_t pid_t; |
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66 #define _PID_T_DECLARED |
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67 #endif |
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68 #endif |
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69 |
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70 #ifndef _SA_FAMILY_T_DECLARED |
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71 typedef __sa_family_t sa_family_t; |
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72 #define _SA_FAMILY_T_DECLARED |
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73 #endif |
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74 |
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75 #ifndef _SOCKLEN_T_DECLARED |
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76 typedef __socklen_t socklen_t; |
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77 #define _SOCKLEN_T_DECLARED |
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78 #endif |
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79 |
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80 #ifndef _SSIZE_T_DECLARED |
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81 typedef __ssize_t ssize_t; |
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82 #define _SSIZE_T_DECLARED |
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83 #endif |
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84 |
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85 #if __BSD_VISIBLE |
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86 #ifndef _UID_T_DECLARED |
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87 typedef __uid_t uid_t; |
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88 #define _UID_T_DECLARED |
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89 #endif |
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90 #endif |
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91 |
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92 /* |
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93 * Types |
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94 */ |
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95 #define SOCK_STREAM 1 /* stream socket */ |
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96 #define SOCK_DGRAM 2 /* datagram socket */ |
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97 #ifdef __SYMBIAN32__ |
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98 #define SOCK_RAW 4 /* raw-protocol interface */ |
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99 #else |
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100 #define SOCK_RAW 3 /* raw-protocol interface */ |
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101 #endif // __SYMBIAN32__ |
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102 #if __BSD_VISIBLE |
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103 #define SOCK_RDM 4 /* reliably-delivered message */ |
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104 #endif |
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105 #ifdef __SYMBIAN32__ |
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106 #define SOCK_SEQPACKET 3 /* sequenced packet stream */ |
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107 #else |
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108 #define SOCK_SEQPACKET 5 /* sequenced packet stream */ |
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109 #endif // __SYMBIAN32__ |
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110 |
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111 /* |
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112 * Option flags per-socket. |
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113 */ |
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114 #define SO_DEBUG 0x0001 /* turn on debugging info recording KSODebug */ |
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115 #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */ |
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116 #ifdef __SYMBIAN32__ |
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117 #define SO_REUSEADDR 0x406 /* allow local address reuse */ |
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118 #else |
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119 #define SO_REUSEADDR 0x0004 /* allow local address reuse */ |
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120 #endif // __SYMBIAN32__ |
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121 #ifdef __SYMBIAN32__ |
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122 #define SO_KEEPALIVE 0x305 /* keep connections alive KSoTcpKeepAlive */ |
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123 #else |
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124 #define SO_KEEPALIVE 0x0008 /* keep connections alive */ |
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125 #endif // __SYMBIAN32__ |
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126 #define SO_DONTROUTE 0x0010 /* just use interface addresses */ |
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127 #ifdef __SYMBIAN32__ |
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128 #define SO_BROADCAST -1 /* permit sending of broadcast msgs */ |
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129 #else |
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130 #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */ |
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131 #endif // __SYMBIAN32__ |
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132 #if __BSD_VISIBLE |
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133 #ifdef __SYMBIAN32__ |
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134 #define SO_USELOOPBACK -2 /* bypass hardware when possible */ |
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135 #else |
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136 #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */ |
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137 #endif // __SYMBIAN32__ |
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138 #endif |
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139 #ifdef __SYMBIAN32__ |
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140 #define SO_LINGER -3 /* linger on close if data present */ |
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141 #else |
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142 #define SO_LINGER 0x0080 /* linger on close if data present */ |
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143 #endif // __SYMBIAN32__ |
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144 #ifdef __SYMBIAN32__ |
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145 #define SO_OOBINLINE 0x315 /* leave received OOB data in line KSoTcpOobInline */ |
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146 #else |
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147 #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */ |
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148 #endif // __SYMBIAN32__ |
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149 #if __BSD_VISIBLE |
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150 #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */ |
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151 #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */ |
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152 #define SO_NOSIGPIPE 0x0800 /* no SIGPIPE from EPIPE */ |
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153 #define SO_ACCEPTFILTER 0x1000 /* there is an accept filter */ |
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154 #define SO_BINTIME 0x2000 /* timestamp received dgram traffic */ |
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155 #endif |
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156 |
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157 /* |
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158 * Additional options, not kept in so_options. |
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159 */ |
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160 #ifdef __SYMBIAN32__ |
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161 #define SO_SNDBUF 3 /* send buffer size KSOSendBuf */ |
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162 #else |
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163 #define SO_SNDBUF 0x1001 /* send buffer size */ |
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164 #endif // __SYMBIAN32__ |
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165 #ifdef __SYMBIAN32__ |
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166 #define SO_RCVBUF 2 /* receive buffer size KSORecvBuf */ |
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167 #else |
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168 #define SO_RCVBUF 0x1002 /* receive buffer size */ |
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169 #endif // __SYMBIAN32__ |
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170 #define SO_SNDLOWAT 0x1003 /* send low-water mark */ |
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171 #define SO_RCVLOWAT 0x1004 /* receive low-water mark */ |
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172 #define SO_SNDTIMEO 0x1005 /* send timeout */ |
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173 #define SO_RCVTIMEO 0x1006 /* receive timeout */ |
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174 #ifdef __SYMBIAN32__ |
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175 #define SO_ERROR 9 /* get error status and clear */ |
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176 #else |
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177 #define SO_ERROR 0x1007 /* get error status and clear */ |
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178 #endif // __SYMBIAN32__ |
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179 #define SO_TYPE 0x1008 /* get socket type */ |
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180 #if __BSD_VISIBLE |
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181 #define SO_LABEL 0x1009 /* socket's MAC label */ |
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182 #define SO_PEERLABEL 0x1010 /* socket's peer's MAC label */ |
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183 #define SO_LISTENQLIMIT 0x1011 /* socket's backlog limit */ |
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184 #define SO_LISTENQLEN 0x1012 /* socket's complete queue length */ |
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185 #define SO_LISTENINCQLEN 0x1013 /* socket's incomplete queue length */ |
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186 #endif |
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187 |
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188 /* |
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189 * Structure used for manipulating linger option. |
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190 */ |
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191 struct linger { |
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192 int l_onoff; /* option on/off */ |
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193 int l_linger; /* linger time */ |
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194 }; |
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195 |
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196 #if __BSD_VISIBLE |
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197 struct accept_filter_arg { |
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198 char af_name[16]; |
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199 char af_arg[256-16]; |
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200 }; |
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201 #endif |
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202 |
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203 /* |
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204 * Level number for (get/set)sockopt() to apply to socket itself. |
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205 */ |
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206 #ifdef __SYMBIAN32__ |
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207 #define SOL_SOCKET 1 /* options for socket level KSOLSocket */ |
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208 #else |
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209 #define SOL_SOCKET 0xffff /* options for socket level */ |
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210 #endif // __SYMBIAN32__ |
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211 /* |
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212 * Address families. |
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213 */ |
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214 #define AF_UNSPEC 0 /* unspecified */ |
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215 #if __BSD_VISIBLE |
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216 #ifdef __SYMBIAN32__ |
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217 #define AF_LOCAL 0x666 /* local to host (pipes, portals) */ |
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218 #else |
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219 #define AF_LOCAL AF_UNIX /* local to host (pipes, portals) */ |
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220 #endif // __SYMBIAN32__ |
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221 #endif |
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222 #define AF_UNIX 1 /* standardized name for AF_LOCAL */ |
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223 #ifdef __SYMBIAN32__ |
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224 #define AF_INET 0x0800 /* internetwork: UDP, TCP, etc. */ |
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225 #else |
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226 #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ |
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227 #endif // __SYMBIAN32__ |
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228 #if __BSD_VISIBLE |
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229 #define AF_IMPLINK 3 /* arpanet imp addresses */ |
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230 #define AF_PUP 4 /* pup protocols: e.g. BSP */ |
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231 #define AF_CHAOS 5 /* mit CHAOS protocols */ |
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232 #define AF_NETBIOS 6 /* SMB protocols */ |
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233 #define AF_ISO 7 /* ISO protocols */ |
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234 #define AF_OSI AF_ISO |
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235 #define AF_ECMA 8 /* European computer manufacturers */ |
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236 #define AF_DATAKIT 9 /* datakit protocols */ |
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237 #define AF_CCITT 10 /* CCITT protocols, X.25 etc */ |
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238 #define AF_SNA 11 /* IBM SNA */ |
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239 #define AF_DECnet 12 /* DECnet */ |
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240 #define AF_DLI 13 /* DEC Direct data link interface */ |
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241 #define AF_LAT 14 /* LAT */ |
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242 #define AF_HYLINK 15 /* NSC Hyperchannel */ |
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243 #define AF_APPLETALK 16 /* Apple Talk */ |
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244 #define AF_ROUTE 17 /* Internal Routing Protocol */ |
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245 #define AF_LINK 18 /* Link layer interface */ |
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246 #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ |
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247 #define AF_COIP 20 /* connection-oriented IP, aka ST II */ |
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248 #define AF_CNT 21 /* Computer Network Technology */ |
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249 #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ |
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250 #define AF_IPX 23 /* Novell Internet Protocol */ |
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251 #define AF_SIP 24 /* Simple Internet Protocol */ |
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252 #define pseudo_AF_PIP 25 /* Help Identify PIP packets */ |
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253 #define AF_ISDN 26 /* Integrated Services Digital Network*/ |
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254 #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ |
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255 #define pseudo_AF_KEY 27 /* Internal key-management function */ |
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256 #endif |
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257 #ifdef __SYMBIAN32__ |
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258 #define AF_INET6 0x0806 /* IPv6 */ |
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259 #else |
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260 #define AF_INET6 28 /* IPv6 */ |
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261 #endif |
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262 #if __BSD_VISIBLE |
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263 #define AF_NATM 29 /* native ATM access */ |
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264 #define AF_ATM 30 /* ATM */ |
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265 #define pseudo_AF_HDRCMPLT 31 /* Used by BPF to not rewrite headers |
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266 * in interface output routine |
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267 */ |
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268 #define AF_NETGRAPH 32 /* Netgraph sockets */ |
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269 #define AF_SLOW 33 /* 802.3ad slow protocol */ |
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270 #define AF_SCLUSTER 34 /* Sitara cluster protocol */ |
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271 #define AF_ARP 35 |
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272 #define AF_BLUETOOTH 36 /* Bluetooth sockets */ |
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273 #define AF_MAX 37 |
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274 #endif |
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275 #ifdef __SYMBIAN32__ |
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276 #define AF_IRDA 0x0100 /* IrDA */ |
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277 #define AF_PLP 273 /* Symbian link protocol */ |
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278 #endif // __SYMBIAN32__ |
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279 |
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280 #ifndef __SYMBIAN32__ |
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281 /* |
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282 * Structure used by kernel to store most |
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283 * addresses. |
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284 */ |
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285 struct sockaddr { |
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286 unsigned char sa_len; /* total length */ |
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287 sa_family_t sa_family; /* address family */ |
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288 char sa_data[14]; /* actually longer; address value */ |
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289 }; |
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290 #else |
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291 /** |
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292 Structure used by EPOC32 to store most addresses. |
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293 NB. EPOC32 uses 32-bit family and port numbers internally, but they have been |
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294 left as shorts here for compatibility with code that uses htons()/ntohs() explicitly. |
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295 */ |
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296 struct sockaddr { |
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297 u_short sa_family; /* address family */ |
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298 u_short sa_port; /* port number - a common feature of most protocols */ |
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299 char sa_data[24]; /* up to 24 bytes of direct address */ |
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300 unsigned char sa_len; |
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301 }; |
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302 #endif //__SYMBIAN32__ |
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303 |
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304 #if __BSD_VISIBLE |
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305 #define SOCK_MAXADDRLEN 255 /* longest possible addresses */ |
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306 |
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307 /* |
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308 * Structure used by kernel to pass protocol |
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309 * information in raw sockets. |
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310 */ |
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311 struct sockproto { |
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312 unsigned short sp_family; /* address family */ |
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313 unsigned short sp_protocol; /* protocol */ |
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314 }; |
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315 #endif |
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316 |
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317 /* |
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318 * RFC 2553: protocol-independent placeholder for socket addresses |
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319 */ |
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320 #define _SS_MAXSIZE 128U |
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321 #define _SS_ALIGNSIZE (sizeof(__int64_t)) |
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322 #define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) - \ |
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323 sizeof(sa_family_t)) |
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324 #define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) - \ |
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325 sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE) |
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326 |
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327 struct sockaddr_storage { |
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328 unsigned char ss_len; /* address length */ |
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329 sa_family_t ss_family; /* address family */ |
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330 char __ss_pad1[_SS_PAD1SIZE]; |
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331 __int64_t __ss_align; /* force desired struct alignment */ |
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332 char __ss_pad2[_SS_PAD2SIZE]; |
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333 }; |
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334 |
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335 #if __BSD_VISIBLE |
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336 /* |
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337 * Protocol families, same as address families for now. |
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338 */ |
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339 #define PF_UNSPEC AF_UNSPEC |
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340 #define PF_LOCAL AF_LOCAL |
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341 #define PF_UNIX PF_LOCAL /* backward compatibility */ |
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342 #define PF_INET AF_INET |
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343 #define PF_IMPLINK AF_IMPLINK |
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344 #define PF_PUP AF_PUP |
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345 #define PF_CHAOS AF_CHAOS |
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346 #define PF_NETBIOS AF_NETBIOS |
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347 #define PF_ISO AF_ISO |
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348 #define PF_OSI AF_ISO |
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349 #define PF_ECMA AF_ECMA |
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350 #define PF_DATAKIT AF_DATAKIT |
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351 #define PF_CCITT AF_CCITT |
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352 #define PF_SNA AF_SNA |
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353 #define PF_DECnet AF_DECnet |
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354 #define PF_DLI AF_DLI |
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355 #define PF_LAT AF_LAT |
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356 #define PF_HYLINK AF_HYLINK |
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357 #define PF_APPLETALK AF_APPLETALK |
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358 #define PF_ROUTE AF_ROUTE |
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359 #define PF_LINK AF_LINK |
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360 #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ |
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361 #define PF_COIP AF_COIP |
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362 #define PF_CNT AF_CNT |
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363 #define PF_SIP AF_SIP |
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364 #define PF_IPX AF_IPX |
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365 #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ |
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366 #define PF_PIP pseudo_AF_PIP |
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367 #define PF_ISDN AF_ISDN |
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368 #define PF_KEY pseudo_AF_KEY |
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369 #define PF_INET6 AF_INET6 |
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370 #define PF_NATM AF_NATM |
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371 #define PF_ATM AF_ATM |
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372 #define PF_NETGRAPH AF_NETGRAPH |
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373 #define PF_SLOW AF_SLOW |
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374 #define PF_SCLUSTER AF_SCLUSTER |
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375 #define PF_ARP AF_ARP |
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376 #define PF_BLUETOOTH AF_BLUETOOTH |
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377 |
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378 #define PF_MAX AF_MAX |
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379 |
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380 #ifdef __SYMBIAN32__ |
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381 #define PF_IRDA AF_IRDA |
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382 #define PF_PLP AF_PLP |
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383 #endif // __SYMBIAN32__ |
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384 /* |
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385 * Definitions for network related sysctl, CTL_NET. |
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386 * |
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387 * Second level is protocol family. |
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388 * Third level is protocol number. |
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389 * |
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390 * Further levels are defined by the individual families below. |
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391 */ |
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392 #define NET_MAXID AF_MAX |
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393 |
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394 #define CTL_NET_NAMES { \ |
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395 { 0, 0 }, \ |
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396 { "unix", CTLTYPE_NODE }, \ |
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397 { "inet", CTLTYPE_NODE }, \ |
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398 { "implink", CTLTYPE_NODE }, \ |
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399 { "pup", CTLTYPE_NODE }, \ |
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400 { "chaos", CTLTYPE_NODE }, \ |
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401 { "xerox_ns", CTLTYPE_NODE }, \ |
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402 { "iso", CTLTYPE_NODE }, \ |
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403 { "emca", CTLTYPE_NODE }, \ |
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404 { "datakit", CTLTYPE_NODE }, \ |
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405 { "ccitt", CTLTYPE_NODE }, \ |
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406 { "ibm_sna", CTLTYPE_NODE }, \ |
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407 { "decnet", CTLTYPE_NODE }, \ |
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408 { "dec_dli", CTLTYPE_NODE }, \ |
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409 { "lat", CTLTYPE_NODE }, \ |
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410 { "hylink", CTLTYPE_NODE }, \ |
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411 { "appletalk", CTLTYPE_NODE }, \ |
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412 { "route", CTLTYPE_NODE }, \ |
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413 { "link_layer", CTLTYPE_NODE }, \ |
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414 { "xtp", CTLTYPE_NODE }, \ |
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415 { "coip", CTLTYPE_NODE }, \ |
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416 { "cnt", CTLTYPE_NODE }, \ |
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417 { "rtip", CTLTYPE_NODE }, \ |
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418 { "ipx", CTLTYPE_NODE }, \ |
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419 { "sip", CTLTYPE_NODE }, \ |
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420 { "pip", CTLTYPE_NODE }, \ |
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421 { "isdn", CTLTYPE_NODE }, \ |
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422 { "key", CTLTYPE_NODE }, \ |
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423 { "inet6", CTLTYPE_NODE }, \ |
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424 { "natm", CTLTYPE_NODE }, \ |
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425 { "atm", CTLTYPE_NODE }, \ |
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426 { "hdrcomplete", CTLTYPE_NODE }, \ |
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427 { "netgraph", CTLTYPE_NODE }, \ |
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428 { "snp", CTLTYPE_NODE }, \ |
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429 { "scp", CTLTYPE_NODE }, \ |
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430 } |
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431 |
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432 /* |
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433 * PF_ROUTE - Routing table |
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434 * |
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435 * Three additional levels are defined: |
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436 * Fourth: address family, 0 is wildcard |
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437 * Fifth: type of info, defined below |
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438 * Sixth: flag(s) to mask with for NET_RT_FLAGS |
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439 */ |
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440 #define NET_RT_DUMP 1 /* dump; may limit to a.f. */ |
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441 #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */ |
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442 #define NET_RT_IFLIST 3 /* survey interface list */ |
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443 #define NET_RT_IFMALIST 4 /* return multicast address list */ |
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444 #define NET_RT_MAXID 5 |
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445 |
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446 #define CTL_NET_RT_NAMES { \ |
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447 { 0, 0 }, \ |
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448 { "dump", CTLTYPE_STRUCT }, \ |
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449 { "flags", CTLTYPE_STRUCT }, \ |
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450 { "iflist", CTLTYPE_STRUCT }, \ |
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451 { "ifmalist", CTLTYPE_STRUCT }, \ |
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452 } |
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453 #endif /* __BSD_VISIBLE */ |
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454 |
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455 /* |
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456 * Maximum queue length specifiable by listen. |
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457 */ |
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458 #ifdef __SYMBIAN32__ |
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459 #define SOMAXCONN 5 |
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460 #else |
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461 #define SOMAXCONN 128 |
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462 #endif // __SYMBIAN32__ |
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463 |
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464 /* |
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465 * Message header for recvmsg and sendmsg calls. |
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466 * Used value-result for recvmsg, value only for sendmsg. |
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467 */ |
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468 struct msghdr { |
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469 void *msg_name; /* optional address */ |
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470 socklen_t msg_namelen; /* size of address */ |
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471 struct iovec *msg_iov; /* scatter/gather array */ |
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472 int msg_iovlen; /* # elements in msg_iov */ |
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473 void *msg_control; /* ancillary data, see below */ |
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474 socklen_t msg_controllen; /* ancillary data buffer len */ |
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475 int msg_flags; /* flags on received message */ |
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476 }; |
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477 |
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478 #define MSG_OOB 0x1 /* process out-of-band data */ |
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479 #define MSG_PEEK 0x2 /* peek at incoming message */ |
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480 #define MSG_DONTROUTE 0x4 /* send without using routing tables */ |
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481 #define MSG_EOR 0x8 /* data completes record */ |
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482 #define MSG_TRUNC 0x10 /* data discarded before delivery */ |
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483 #define MSG_CTRUNC 0x20 /* control data lost before delivery */ |
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484 #define MSG_WAITALL 0x40 /* wait for full request or error */ |
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485 #if __BSD_VISIBLE |
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486 #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */ |
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487 #define MSG_EOF 0x100 /* data completes connection */ |
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488 #define MSG_NBIO 0x4000 /* FIONBIO mode, used by fifofs */ |
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489 #define MSG_COMPAT 0x8000 /* used in sendit() */ |
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490 #endif |
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491 #ifdef _KERNEL |
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492 #define MSG_SOCALLBCK 0x10000 /* for use by socket callbacks - soreceive (TCP) */ |
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493 #endif |
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494 #if __BSD_VISIBLE |
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495 #define MSG_NOSIGNAL 0x20000 /* do not generate SIGPIPE on EOF */ |
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496 #endif |
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497 |
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498 /* |
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499 * Header for ancillary data objects in msg_control buffer. |
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500 * Used for additional information with/about a datagram |
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501 * not expressible by flags. The format is a sequence |
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502 * of message elements headed by cmsghdr structures. |
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503 */ |
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504 struct cmsghdr { |
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505 socklen_t cmsg_len; /* data byte count, including hdr */ |
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506 int cmsg_level; /* originating protocol */ |
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507 int cmsg_type; /* protocol-specific type */ |
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508 /* followed by u_char cmsg_data[]; */ |
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509 }; |
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510 |
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511 #if __BSD_VISIBLE |
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512 /* |
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513 * While we may have more groups than this, the cmsgcred struct must |
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514 * be able to fit in an mbuf, and NGROUPS_MAX is too large to allow |
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515 * this. |
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516 */ |
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517 #define CMGROUP_MAX 16 |
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518 |
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519 /* |
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520 * Credentials structure, used to verify the identity of a peer |
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521 * process that has sent us a message. This is allocated by the |
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522 * peer process but filled in by the kernel. This prevents the |
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523 * peer from lying about its identity. (Note that cmcred_groups[0] |
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524 * is the effective GID.) |
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525 */ |
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526 struct cmsgcred { |
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527 pid_t cmcred_pid; /* PID of sending process */ |
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528 uid_t cmcred_uid; /* real UID of sending process */ |
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529 uid_t cmcred_euid; /* effective UID of sending process */ |
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530 gid_t cmcred_gid; /* real GID of sending process */ |
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531 short cmcred_ngroups; /* number or groups */ |
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532 gid_t cmcred_groups[CMGROUP_MAX]; /* groups */ |
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533 }; |
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534 |
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535 /* |
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536 * Socket credentials. |
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537 */ |
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538 struct sockcred { |
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539 uid_t sc_uid; /* real user id */ |
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540 uid_t sc_euid; /* effective user id */ |
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541 gid_t sc_gid; /* real group id */ |
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542 gid_t sc_egid; /* effective group id */ |
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543 int sc_ngroups; /* number of supplemental groups */ |
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544 gid_t sc_groups[1]; /* variable length */ |
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545 }; |
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546 |
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547 /* |
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548 * Compute size of a sockcred structure with groups. |
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549 */ |
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550 #define SOCKCREDSIZE(ngrps) \ |
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551 (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1))) |
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552 |
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553 #endif /* __BSD_VISIBLE */ |
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554 |
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555 /* given pointer to struct cmsghdr, return pointer to data */ |
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556 #define CMSG_DATA(cmsg) ((unsigned char *)(cmsg) + \ |
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557 _ALIGN(sizeof(struct cmsghdr))) |
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558 |
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559 /* given pointer to struct cmsghdr, return pointer to next cmsghdr */ |
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560 #define CMSG_NXTHDR(mhdr, cmsg) \ |
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561 (((char *)(cmsg) + _ALIGN((cmsg)->cmsg_len) + \ |
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562 _ALIGN(sizeof(struct cmsghdr)) > \ |
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563 (char *)(mhdr)->msg_control + (mhdr)->msg_controllen) ? \ |
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564 (struct cmsghdr *)0 : \ |
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565 (struct cmsghdr *)((char *)(cmsg) + _ALIGN((cmsg)->cmsg_len))) |
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566 |
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567 /* |
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568 * RFC 2292 requires to check msg_controllen, in case that the kernel returns |
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569 * an empty list for some reasons. |
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570 */ |
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571 #define CMSG_FIRSTHDR(mhdr) \ |
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572 ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ |
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573 (struct cmsghdr *)(mhdr)->msg_control : \ |
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574 (struct cmsghdr *)NULL) |
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575 |
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576 #if __BSD_VISIBLE |
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577 /* RFC 2292 additions */ |
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578 #define CMSG_SPACE(l) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(l)) |
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579 #define CMSG_LEN(l) (_ALIGN(sizeof(struct cmsghdr)) + (l)) |
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580 #endif |
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581 |
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582 #ifdef _KERNEL |
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583 #define CMSG_ALIGN(n) _ALIGN(n) |
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584 #endif |
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585 |
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586 /* "Socket"-level control message types: */ |
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587 #define SCM_RIGHTS 0x01 /* access rights (array of int) */ |
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588 #if __BSD_VISIBLE |
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589 #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */ |
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590 #define SCM_CREDS 0x03 /* process creds (struct cmsgcred) */ |
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591 #define SCM_BINTIME 0x04 /* timestamp (struct bintime) */ |
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592 #endif |
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593 |
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594 #if __BSD_VISIBLE |
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595 /* |
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596 * 4.3 compat sockaddr, move to compat file later |
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597 */ |
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598 struct osockaddr { |
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599 unsigned short sa_family; /* address family */ |
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600 char sa_data[14]; /* up to 14 bytes of direct address */ |
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601 }; |
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602 |
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603 /* |
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604 * 4.3-compat message header (move to compat file later). |
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605 */ |
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606 struct omsghdr { |
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607 char *msg_name; /* optional address */ |
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608 int msg_namelen; /* size of address */ |
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609 struct iovec *msg_iov; /* scatter/gather array */ |
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610 int msg_iovlen; /* # elements in msg_iov */ |
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611 char *msg_accrights; /* access rights sent/received */ |
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612 int msg_accrightslen; |
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613 }; |
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614 #endif |
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615 |
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616 /* |
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617 * howto arguments for shutdown(2), specified by Posix.1g. |
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618 */ |
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619 #define SHUT_RD 0 /* shut down the reading side */ |
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620 #define SHUT_WR 1 /* shut down the writing side */ |
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621 #define SHUT_RDWR 2 /* shut down both sides */ |
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622 |
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623 #if __BSD_VISIBLE |
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624 /* |
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625 * sendfile(2) header/trailer struct |
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626 */ |
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627 struct sf_hdtr { |
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628 struct iovec *headers; /* pointer to an array of header struct iovec's */ |
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629 int hdr_cnt; /* number of header iovec's */ |
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630 struct iovec *trailers; /* pointer to an array of trailer struct iovec's */ |
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631 int trl_cnt; /* number of trailer iovec's */ |
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632 }; |
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633 |
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634 /* |
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635 * Sendfile-specific flag(s) |
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636 */ |
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637 #define SF_NODISKIO 0x00000001 |
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638 #endif |
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639 |
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640 #ifndef _KERNEL |
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641 |
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642 #include <sys/cdefs.h> |
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643 |
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644 __BEGIN_DECLS |
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645 IMPORT_C int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); |
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646 IMPORT_C int bind(int, const struct sockaddr *, socklen_t); |
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647 IMPORT_C int connect(int, const struct sockaddr *, socklen_t); |
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648 IMPORT_C int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); |
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649 IMPORT_C int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); |
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650 IMPORT_C int getsockopt(int, int, int, void * __restrict, socklen_t * __restrict); |
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651 IMPORT_C int listen(int, int); |
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652 IMPORT_C ssize_t recv(int, void *, size_t, int); |
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653 IMPORT_C ssize_t recvfrom(int, void *, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); |
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654 IMPORT_C ssize_t recvmsg(int, struct msghdr *, int); |
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655 IMPORT_C ssize_t send(int, const void *, size_t, int); |
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656 IMPORT_C ssize_t sendto(int, const void *, |
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657 size_t, int, const struct sockaddr *, socklen_t); |
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658 IMPORT_C ssize_t sendmsg(int, const struct msghdr *, int); |
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659 IMPORT_C int setsockopt(int, int, int, const void *, socklen_t); |
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660 IMPORT_C int shutdown(int, int); |
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661 IMPORT_C int sockatmark(int); |
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662 IMPORT_C int socket(int, int, int); |
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663 __END_DECLS |
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664 |
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665 #endif /* !_KERNEL */ |
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666 |
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667 #endif /* !_SYS_SOCKET_H_ */ |