Annotation of src/sys/sys/socket.h, Revision 1.1.1.1
1.1 cgd 1: /*
2: * Copyright (c) 1982,1985,1986,1988 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
33: * @(#)socket.h 7.13 (Berkeley) 4/20/91
34: */
35:
36: /*
37: * Definitions related to sockets: types, address families, options.
38: */
39:
40: /*
41: * Types
42: */
43: #define SOCK_STREAM 1 /* stream socket */
44: #define SOCK_DGRAM 2 /* datagram socket */
45: #define SOCK_RAW 3 /* raw-protocol interface */
46: #define SOCK_RDM 4 /* reliably-delivered message */
47: #define SOCK_SEQPACKET 5 /* sequenced packet stream */
48:
49: /*
50: * Option flags per-socket.
51: */
52: #define SO_DEBUG 0x0001 /* turn on debugging info recording */
53: #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
54: #define SO_REUSEADDR 0x0004 /* allow local address reuse */
55: #define SO_KEEPALIVE 0x0008 /* keep connections alive */
56: #define SO_DONTROUTE 0x0010 /* just use interface addresses */
57: #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
58: #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
59: #define SO_LINGER 0x0080 /* linger on close if data present */
60: #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
61:
62: /*
63: * Additional options, not kept in so_options.
64: */
65: #define SO_SNDBUF 0x1001 /* send buffer size */
66: #define SO_RCVBUF 0x1002 /* receive buffer size */
67: #define SO_SNDLOWAT 0x1003 /* send low-water mark */
68: #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
69: #define SO_SNDTIMEO 0x1005 /* send timeout */
70: #define SO_RCVTIMEO 0x1006 /* receive timeout */
71: #define SO_ERROR 0x1007 /* get error status and clear */
72: #define SO_TYPE 0x1008 /* get socket type */
73:
74: /*
75: * Structure used for manipulating linger option.
76: */
77: struct linger {
78: int l_onoff; /* option on/off */
79: int l_linger; /* linger time */
80: };
81:
82: /*
83: * Level number for (get/set)sockopt() to apply to socket itself.
84: */
85: #define SOL_SOCKET 0xffff /* options for socket level */
86:
87: /*
88: * Address families.
89: */
90: #define AF_UNSPEC 0 /* unspecified */
91: #define AF_UNIX 1 /* local to host (pipes, portals) */
92: #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
93: #define AF_IMPLINK 3 /* arpanet imp addresses */
94: #define AF_PUP 4 /* pup protocols: e.g. BSP */
95: #define AF_CHAOS 5 /* mit CHAOS protocols */
96: #define AF_NS 6 /* XEROX NS protocols */
97: #define AF_ISO 7 /* ISO protocols */
98: #define AF_OSI AF_ISO
99: #define AF_ECMA 8 /* european computer manufacturers */
100: #define AF_DATAKIT 9 /* datakit protocols */
101: #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
102: #define AF_SNA 11 /* IBM SNA */
103: #define AF_DECnet 12 /* DECnet */
104: #define AF_DLI 13 /* DEC Direct data link interface */
105: #define AF_LAT 14 /* LAT */
106: #define AF_HYLINK 15 /* NSC Hyperchannel */
107: #define AF_APPLETALK 16 /* Apple Talk */
108: #define AF_ROUTE 17 /* Internal Routing Protocol */
109: #define AF_LINK 18 /* Link layer interface */
110: #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
111:
112: #define AF_MAX 20
113:
114: /*
115: * Structure used by kernel to store most
116: * addresses.
117: */
118: struct sockaddr {
119: u_char sa_len; /* total length */
120: u_char sa_family; /* address family */
121: char sa_data[14]; /* actually longer; address value */
122: };
123:
124: /*
125: * Structure used by kernel to pass protocol
126: * information in raw sockets.
127: */
128: struct sockproto {
129: u_short sp_family; /* address family */
130: u_short sp_protocol; /* protocol */
131: };
132:
133: /*
134: * Protocol families, same as address families for now.
135: */
136: #define PF_UNSPEC AF_UNSPEC
137: #define PF_UNIX AF_UNIX
138: #define PF_INET AF_INET
139: #define PF_IMPLINK AF_IMPLINK
140: #define PF_PUP AF_PUP
141: #define PF_CHAOS AF_CHAOS
142: #define PF_NS AF_NS
143: #define PF_ISO AF_ISO
144: #define PF_OSI AF_ISO
145: #define PF_ECMA AF_ECMA
146: #define PF_DATAKIT AF_DATAKIT
147: #define PF_CCITT AF_CCITT
148: #define PF_SNA AF_SNA
149: #define PF_DECnet AF_DECnet
150: #define PF_DLI AF_DLI
151: #define PF_LAT AF_LAT
152: #define PF_HYLINK AF_HYLINK
153: #define PF_APPLETALK AF_APPLETALK
154: #define PF_ROUTE AF_ROUTE
155: #define PF_LINK AF_LINK
156: #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
157:
158: #define PF_MAX AF_MAX
159:
160: /*
161: * Maximum queue length specifiable by listen.
162: */
163: #define SOMAXCONN 5
164:
165: /*
166: * Message header for recvmsg and sendmsg calls.
167: * Used value-result for recvmsg, value only for sendmsg.
168: */
169: struct msghdr {
170: caddr_t msg_name; /* optional address */
171: u_int msg_namelen; /* size of address */
172: struct iovec *msg_iov; /* scatter/gather array */
173: u_int msg_iovlen; /* # elements in msg_iov */
174: caddr_t msg_control; /* ancillary data, see below */
175: u_int msg_controllen; /* ancillary data buffer len */
176: int msg_flags; /* flags on received message */
177: };
178:
179: #define MSG_OOB 0x1 /* process out-of-band data */
180: #define MSG_PEEK 0x2 /* peek at incoming message */
181: #define MSG_DONTROUTE 0x4 /* send without using routing tables */
182: #define MSG_EOR 0x8 /* data completes record */
183: #define MSG_TRUNC 0x10 /* data discarded before delivery */
184: #define MSG_CTRUNC 0x20 /* control data lost before delivery */
185: #define MSG_WAITALL 0x40 /* wait for full request or error */
186:
187: /*
188: * Header for ancillary data objects in msg_control buffer.
189: * Used for additional information with/about a datagram
190: * not expressible by flags. The format is a sequence
191: * of message elements headed by cmsghdr structures.
192: */
193: struct cmsghdr {
194: u_int cmsg_len; /* data byte count, including hdr */
195: int cmsg_level; /* originating protocol */
196: int cmsg_type; /* protocol-specific type */
197: /* followed by u_char cmsg_data[]; */
198: };
199:
200: /* given pointer to struct adatahdr, return pointer to data */
201: #define CMSG_DATA(cmsg) ((u_char *)((cmsg) + 1))
202:
203: /* given pointer to struct adatahdr, return pointer to next adatahdr */
204: #define CMSG_NXTHDR(mhdr, cmsg) \
205: (((caddr_t)(cmsg) + (cmsg)->cmsg_len + sizeof(struct cmsghdr) > \
206: (mhdr)->msg_control + (mhdr)->msg_controllen) ? \
207: (struct cmsghdr *)NULL : \
208: (struct cmsghdr *)((caddr_t)(cmsg) + ALIGN((cmsg)->cmsg_len)))
209:
210: #define CMSG_FIRSTHDR(mhdr) ((struct cmsghdr *)(mhdr)->msg_control)
211:
212: /* "Socket"-level control message types: */
213: #define SCM_RIGHTS 0x01 /* access rights (array of int) */
214:
215: /*
216: * 4.3 compat sockaddr, move to compat file later
217: */
218: struct osockaddr {
219: u_short sa_family; /* address family */
220: char sa_data[14]; /* up to 14 bytes of direct address */
221: };
222:
223: /*
224: * 4.3-compat message header (move to compat file later).
225: */
226: struct omsghdr {
227: caddr_t msg_name; /* optional address */
228: int msg_namelen; /* size of address */
229: struct iovec *msg_iov; /* scatter/gather array */
230: int msg_iovlen; /* # elements in msg_iov */
231: caddr_t msg_accrights; /* access rights sent/received */
232: int msg_accrightslen;
233: };
234:
235: #ifndef KERNEL
236:
237: #include <sys/cdefs.h>
238:
239: __BEGIN_DECLS
240: int accept __P((int, struct sockaddr *, int *));
241: int bind __P((int, const struct sockaddr *, int));
242: int connect __P((int, const struct sockaddr *, int));
243: int getpeername __P((int, struct sockaddr *, int *));
244: int getsockname __P((int, struct sockaddr *, int *));
245: int getsockopt __P((int, int, int, void *, int *));
246: int listen __P((int, int));
247: int recv __P((int, void *, int, int));
248: int recvfrom __P((int, void *, int, int,
249: struct sockaddr *, int *));
250: int recvmsg __P((int, struct msghdr *, int));
251: int send __P((int, const void *, int, int));
252: int sendto __P((int, const void *, int, int, const struct sockaddr *, int));
253: int sendmsg __P((int, const struct msghdr *, int));
254: int setsockopt __P((int, int, int, const void *, int));
255: int shutdown __P((int, int));
256: int socket __P((int, int, int));
257: int socketpair __P((int, int, int, int *));
258: __END_DECLS
259:
260: #endif /* !KERNEL */
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