Annotation of src/sys/sys/socket.h, Revision 1.68
1.68 ! agc 1: /* $NetBSD: socket.h,v 1.67 2003/04/28 23:16:30 bjh21 Exp $ */
1.44 itojun 2:
3: /*
4: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. Neither the name of the project nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
1.10 cgd 31:
1.1 cgd 32: /*
1.8 mycroft 33: * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
34: * The Regents of the University of California. All rights reserved.
1.1 cgd 35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
1.68 ! agc 44: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 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: *
1.28 fvdl 60: * @(#)socket.h 8.6 (Berkeley) 5/3/95
1.1 cgd 61: */
62:
1.2 mycroft 63: #ifndef _SYS_SOCKET_H_
1.8 mycroft 64: #define _SYS_SOCKET_H_
1.2 mycroft 65:
1.67 bjh21 66: #include <sys/featuretest.h>
67:
1.1 cgd 68: /*
69: * Definitions related to sockets: types, address families, options.
70: */
71:
72: /*
1.42 kleink 73: * Data types.
74: */
1.55 itojun 75: #include <sys/ansi.h>
1.56 kleink 76:
77: #ifndef sa_family_t
78: typedef __sa_family_t sa_family_t;
1.58 kleink 79: #define sa_family_t __sa_family_t
1.56 kleink 80: #endif
81:
1.55 itojun 82: #ifndef socklen_t
83: typedef __socklen_t socklen_t;
1.58 kleink 84: #define socklen_t __socklen_t
1.55 itojun 85: #endif
1.42 kleink 86:
1.63 kleink 87: #include <machine/ansi.h>
88:
89: #ifdef _BSD_SIZE_T_
90: typedef _BSD_SIZE_T_ size_t;
91: #undef _BSD_SIZE_T_
92: #endif
93:
94: #ifdef _BSD_SSIZE_T_
95: typedef _BSD_SSIZE_T_ ssize_t;
96: #undef _BSD_SSIZE_T_
97: #endif
98:
99: #include <sys/uio.h>
100:
1.42 kleink 101: /*
102: * Socket types.
1.1 cgd 103: */
104: #define SOCK_STREAM 1 /* stream socket */
105: #define SOCK_DGRAM 2 /* datagram socket */
106: #define SOCK_RAW 3 /* raw-protocol interface */
107: #define SOCK_RDM 4 /* reliably-delivered message */
108: #define SOCK_SEQPACKET 5 /* sequenced packet stream */
109:
110: /*
111: * Option flags per-socket.
112: */
113: #define SO_DEBUG 0x0001 /* turn on debugging info recording */
114: #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */
115: #define SO_REUSEADDR 0x0004 /* allow local address reuse */
116: #define SO_KEEPALIVE 0x0008 /* keep connections alive */
117: #define SO_DONTROUTE 0x0010 /* just use interface addresses */
118: #define SO_BROADCAST 0x0020 /* permit sending of broadcast msgs */
119: #define SO_USELOOPBACK 0x0040 /* bypass hardware when possible */
120: #define SO_LINGER 0x0080 /* linger on close if data present */
121: #define SO_OOBINLINE 0x0100 /* leave received OOB data in line */
1.8 mycroft 122: #define SO_REUSEPORT 0x0200 /* allow local address & port reuse */
1.18 thorpej 123: #define SO_TIMESTAMP 0x0400 /* timestamp received dgram traffic */
1.1 cgd 124:
125: /*
126: * Additional options, not kept in so_options.
127: */
128: #define SO_SNDBUF 0x1001 /* send buffer size */
129: #define SO_RCVBUF 0x1002 /* receive buffer size */
130: #define SO_SNDLOWAT 0x1003 /* send low-water mark */
131: #define SO_RCVLOWAT 0x1004 /* receive low-water mark */
132: #define SO_SNDTIMEO 0x1005 /* send timeout */
133: #define SO_RCVTIMEO 0x1006 /* receive timeout */
134: #define SO_ERROR 0x1007 /* get error status and clear */
135: #define SO_TYPE 0x1008 /* get socket type */
136:
137: /*
138: * Structure used for manipulating linger option.
139: */
140: struct linger {
141: int l_onoff; /* option on/off */
1.28 fvdl 142: int l_linger; /* linger time in seconds */
1.1 cgd 143: };
144:
145: /*
146: * Level number for (get/set)sockopt() to apply to socket itself.
147: */
148: #define SOL_SOCKET 0xffff /* options for socket level */
149:
150: /*
151: * Address families.
152: */
153: #define AF_UNSPEC 0 /* unspecified */
1.8 mycroft 154: #define AF_LOCAL 1 /* local to host (pipes, portals) */
155: #define AF_UNIX AF_LOCAL /* backward compatibility */
1.1 cgd 156: #define AF_INET 2 /* internetwork: UDP, TCP, etc. */
157: #define AF_IMPLINK 3 /* arpanet imp addresses */
158: #define AF_PUP 4 /* pup protocols: e.g. BSP */
159: #define AF_CHAOS 5 /* mit CHAOS protocols */
160: #define AF_NS 6 /* XEROX NS protocols */
161: #define AF_ISO 7 /* ISO protocols */
162: #define AF_OSI AF_ISO
163: #define AF_ECMA 8 /* european computer manufacturers */
164: #define AF_DATAKIT 9 /* datakit protocols */
165: #define AF_CCITT 10 /* CCITT protocols, X.25 etc */
166: #define AF_SNA 11 /* IBM SNA */
167: #define AF_DECnet 12 /* DECnet */
168: #define AF_DLI 13 /* DEC Direct data link interface */
169: #define AF_LAT 14 /* LAT */
170: #define AF_HYLINK 15 /* NSC Hyperchannel */
171: #define AF_APPLETALK 16 /* Apple Talk */
172: #define AF_ROUTE 17 /* Internal Routing Protocol */
173: #define AF_LINK 18 /* Link layer interface */
1.67 bjh21 174: #if defined(_NETBSD_SOURCE)
1.1 cgd 175: #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */
1.42 kleink 176: #endif
1.8 mycroft 177: #define AF_COIP 20 /* connection-oriented IP, aka ST II */
178: #define AF_CNT 21 /* Computer Network Technology */
1.67 bjh21 179: #if defined(_NETBSD_SOURCE)
1.8 mycroft 180: #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */
1.42 kleink 181: #endif
1.8 mycroft 182: #define AF_IPX 23 /* Novell Internet Protocol */
1.21 sommerfe 183: #define AF_INET6 24 /* IP version 6 */
1.67 bjh21 184: #if defined(_NETBSD_SOURCE)
1.8 mycroft 185: #define pseudo_AF_PIP 25 /* Help Identify PIP packets */
1.42 kleink 186: #endif
1.17 chuck 187: #define AF_ISDN 26 /* Integrated Services Digital Network*/
188: #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */
189: #define AF_NATM 27 /* native ATM access */
1.19 is 190: #define AF_ARP 28 /* (rev.) addr. res. prot. (RFC 826) */
1.67 bjh21 191: #if defined(_NETBSD_SOURCE)
1.21 sommerfe 192: #define pseudo_AF_KEY 29 /* Internal key management protocol */
1.31 thorpej 193: #define pseudo_AF_HDRCMPLT 30 /* Used by BPF to not rewrite hdrs
194: in interface output routine */
1.42 kleink 195: #endif
1.1 cgd 196:
1.31 thorpej 197: #define AF_MAX 31
1.1 cgd 198:
199: /*
1.26 thorpej 200: * Structure used by kernel to store most
201: * addresses.
1.1 cgd 202: */
203: struct sockaddr {
1.63 kleink 204: __uint8_t sa_len; /* total length */
1.56 kleink 205: sa_family_t sa_family; /* address family */
206: char sa_data[14]; /* actually longer; address value */
1.26 thorpej 207: };
1.1 cgd 208:
1.42 kleink 209: #if defined(_KERNEL)
1.1 cgd 210: /*
211: * Structure used by kernel to pass protocol
212: * information in raw sockets.
213: */
214: struct sockproto {
215: u_short sp_family; /* address family */
216: u_short sp_protocol; /* protocol */
217: };
1.42 kleink 218: #endif /* _KERNEL */
1.1 cgd 219:
1.44 itojun 220: #if 1
221: /*
222: * RFC 2553: protocol-independent placeholder for socket addresses
223: */
224: #define _SS_MAXSIZE 128
1.63 kleink 225: #define _SS_ALIGNSIZE (sizeof(__int64_t))
1.60 kleink 226: #define _SS_PAD1SIZE (_SS_ALIGNSIZE - 2)
227: #define _SS_PAD2SIZE (_SS_MAXSIZE - 2 - \
1.44 itojun 228: _SS_PAD1SIZE - _SS_ALIGNSIZE)
229:
1.67 bjh21 230: #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
1.44 itojun 231: struct sockaddr_storage {
1.63 kleink 232: __uint8_t ss_len; /* address length */
1.56 kleink 233: sa_family_t ss_family; /* address family */
234: char __ss_pad1[_SS_PAD1SIZE];
1.63 kleink 235: __int64_t __ss_align;/* force desired structure storage alignment */
1.56 kleink 236: char __ss_pad2[_SS_PAD2SIZE];
1.44 itojun 237: };
1.67 bjh21 238: #endif /* _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
1.46 kleink 239: #endif /* 1 */
1.44 itojun 240:
1.1 cgd 241: /*
242: * Protocol families, same as address families for now.
243: */
244: #define PF_UNSPEC AF_UNSPEC
1.8 mycroft 245: #define PF_LOCAL AF_LOCAL
246: #define PF_UNIX PF_LOCAL /* backward compatibility */
1.1 cgd 247: #define PF_INET AF_INET
248: #define PF_IMPLINK AF_IMPLINK
249: #define PF_PUP AF_PUP
250: #define PF_CHAOS AF_CHAOS
251: #define PF_NS AF_NS
252: #define PF_ISO AF_ISO
253: #define PF_OSI AF_ISO
254: #define PF_ECMA AF_ECMA
255: #define PF_DATAKIT AF_DATAKIT
256: #define PF_CCITT AF_CCITT
257: #define PF_SNA AF_SNA
258: #define PF_DECnet AF_DECnet
259: #define PF_DLI AF_DLI
260: #define PF_LAT AF_LAT
261: #define PF_HYLINK AF_HYLINK
262: #define PF_APPLETALK AF_APPLETALK
263: #define PF_ROUTE AF_ROUTE
264: #define PF_LINK AF_LINK
1.67 bjh21 265: #if defined(_NETBSD_SOURCE)
1.1 cgd 266: #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */
1.42 kleink 267: #endif
1.8 mycroft 268: #define PF_COIP AF_COIP
269: #define PF_CNT AF_CNT
1.21 sommerfe 270: #define PF_INET6 AF_INET6
1.8 mycroft 271: #define PF_IPX AF_IPX /* same format as AF_NS */
1.67 bjh21 272: #if defined(_NETBSD_SOURCE)
1.8 mycroft 273: #define PF_RTIP pseudo_AF_FTIP /* same format as AF_INET */
274: #define PF_PIP pseudo_AF_PIP
1.42 kleink 275: #endif
1.20 is 276: #define PF_ISDN AF_ISDN /* same as E164 */
277: #define PF_E164 AF_E164
1.17 chuck 278: #define PF_NATM AF_NATM
1.19 is 279: #define PF_ARP AF_ARP
1.67 bjh21 280: #if defined(_NETBSD_SOURCE)
1.21 sommerfe 281: #define PF_KEY pseudo_AF_KEY /* like PF_ROUTE, only for key mgmt */
1.42 kleink 282: #endif
1.1 cgd 283:
284: #define PF_MAX AF_MAX
285:
1.67 bjh21 286: #if defined(_NETBSD_SOURCE)
1.63 kleink 287:
288: #ifndef gid_t
289: typedef __gid_t gid_t; /* group id */
290: #define gid_t __gid_t
291: #endif
292:
293: #ifndef uid_t
294: typedef __uid_t uid_t; /* user id */
295: #define uid_t __uid_t
296: #endif
297:
1.1 cgd 298: /*
1.27 thorpej 299: * Socket credentials.
300: */
301: struct sockcred {
302: uid_t sc_uid; /* real user id */
303: uid_t sc_euid; /* effective user id */
304: gid_t sc_gid; /* real group id */
305: gid_t sc_egid; /* effective group id */
306: int sc_ngroups; /* number of supplemental groups */
307: gid_t sc_groups[1]; /* variable length */
308: };
309:
310: /*
311: * Compute size of a sockcred structure with groups.
312: */
313: #define SOCKCREDSIZE(ngrps) \
314: (sizeof(struct sockcred) + (sizeof(gid_t) * ((ngrps) - 1)))
1.67 bjh21 315: #endif /* _NETBSD_SOURCE */
1.27 thorpej 316:
1.38 kleink 317:
1.67 bjh21 318: #if defined(_NETBSD_SOURCE)
1.27 thorpej 319: /*
1.8 mycroft 320: * Definitions for network related sysctl, CTL_NET.
321: *
322: * Second level is protocol family.
323: * Third level is protocol number.
324: *
325: * Further levels are defined by the individual families below.
326: */
327: #define NET_MAXID AF_MAX
328:
329: #define CTL_NET_NAMES { \
330: { 0, 0 }, \
1.28 fvdl 331: { "local", CTLTYPE_NODE }, \
1.8 mycroft 332: { "inet", CTLTYPE_NODE }, \
333: { "implink", CTLTYPE_NODE }, \
334: { "pup", CTLTYPE_NODE }, \
335: { "chaos", CTLTYPE_NODE }, \
336: { "xerox_ns", CTLTYPE_NODE }, \
337: { "iso", CTLTYPE_NODE }, \
338: { "emca", CTLTYPE_NODE }, \
339: { "datakit", CTLTYPE_NODE }, \
340: { "ccitt", CTLTYPE_NODE }, \
341: { "ibm_sna", CTLTYPE_NODE }, \
342: { "decnet", CTLTYPE_NODE }, \
343: { "dec_dli", CTLTYPE_NODE }, \
344: { "lat", CTLTYPE_NODE }, \
345: { "hylink", CTLTYPE_NODE }, \
346: { "appletalk", CTLTYPE_NODE }, \
347: { "route", CTLTYPE_NODE }, \
348: { "link_layer", CTLTYPE_NODE }, \
349: { "xtp", CTLTYPE_NODE }, \
350: { "coip", CTLTYPE_NODE }, \
351: { "cnt", CTLTYPE_NODE }, \
352: { "rtip", CTLTYPE_NODE }, \
353: { "ipx", CTLTYPE_NODE }, \
1.21 sommerfe 354: { "inet6", CTLTYPE_NODE }, \
1.8 mycroft 355: { "pip", CTLTYPE_NODE }, \
1.20 is 356: { "isdn", CTLTYPE_NODE }, \
1.17 chuck 357: { "natm", CTLTYPE_NODE }, \
1.20 is 358: { "arp", CTLTYPE_NODE }, \
1.21 sommerfe 359: { "key", CTLTYPE_NODE }, \
1.8 mycroft 360: }
1.67 bjh21 361: #endif /* _NETBSD_SOURCE */
1.8 mycroft 362:
1.67 bjh21 363: #if defined(_NETBSD_SOURCE)
1.8 mycroft 364: /*
365: * PF_ROUTE - Routing table
366: *
367: * Three additional levels are defined:
368: * Fourth: address family, 0 is wildcard
369: * Fifth: type of info, defined below
370: * Sixth: flag(s) to mask with for NET_RT_FLAGS
371: */
372: #define NET_RT_DUMP 1 /* dump; may limit to a.f. */
373: #define NET_RT_FLAGS 2 /* by flags, e.g. RESOLVING */
1.47 bouyer 374: #define NET_RT_OIFLIST 3 /* old NET_RT_IFLIST (pre 1.5) */
375: #define NET_RT_IFLIST 4 /* survey interface list */
376: #define NET_RT_MAXID 5
1.8 mycroft 377:
378: #define CTL_NET_RT_NAMES { \
379: { 0, 0 }, \
380: { "dump", CTLTYPE_STRUCT }, \
381: { "flags", CTLTYPE_STRUCT }, \
1.47 bouyer 382: { 0, 0 }, \
1.8 mycroft 383: { "iflist", CTLTYPE_STRUCT }, \
384: }
1.67 bjh21 385: #endif /* _NETBSD_SOURCE */
1.8 mycroft 386:
387: /*
1.13 mycroft 388: * Maximum queue length specifiable by listen(2).
1.1 cgd 389: */
1.66 christos 390: #ifndef SOMAXCONN
1.13 mycroft 391: #define SOMAXCONN 128
1.66 christos 392: #endif
1.16 neil 393:
1.1 cgd 394: /*
395: * Message header for recvmsg and sendmsg calls.
396: * Used value-result for recvmsg, value only for sendmsg.
397: */
398: struct msghdr {
1.42 kleink 399: void *msg_name; /* optional address */
400: socklen_t msg_namelen; /* size of address */
401: struct iovec *msg_iov; /* scatter/gather array */
402: int msg_iovlen; /* # elements in msg_iov */
403: void *msg_control; /* ancillary data, see below */
404: socklen_t msg_controllen; /* ancillary data buffer len */
405: int msg_flags; /* flags on received message */
1.1 cgd 406: };
407:
408: #define MSG_OOB 0x1 /* process out-of-band data */
409: #define MSG_PEEK 0x2 /* peek at incoming message */
410: #define MSG_DONTROUTE 0x4 /* send without using routing tables */
411: #define MSG_EOR 0x8 /* data completes record */
412: #define MSG_TRUNC 0x10 /* data discarded before delivery */
413: #define MSG_CTRUNC 0x20 /* control data lost before delivery */
414: #define MSG_WAITALL 0x40 /* wait for full request or error */
1.8 mycroft 415: #define MSG_DONTWAIT 0x80 /* this message should be nonblocking */
1.30 matt 416: #define MSG_BCAST 0x100 /* this message was rcvd using link-level brdcst */
417: #define MSG_MCAST 0x200 /* this message was rcvd using link-level mcast */
1.1 cgd 418:
419: /*
420: * Header for ancillary data objects in msg_control buffer.
421: * Used for additional information with/about a datagram
422: * not expressible by flags. The format is a sequence
423: * of message elements headed by cmsghdr structures.
424: */
425: struct cmsghdr {
1.42 kleink 426: socklen_t cmsg_len; /* data byte count, including hdr */
427: int cmsg_level; /* originating protocol */
428: int cmsg_type; /* protocol-specific type */
1.1 cgd 429: /* followed by u_char cmsg_data[]; */
430: };
431:
1.8 mycroft 432: /* given pointer to struct cmsghdr, return pointer to data */
1.50 itojun 433: #define CMSG_DATA(cmsg) \
1.57 christos 434: ((u_char *)(void *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
1.1 cgd 435:
1.44 itojun 436: /*
437: * Alignment requirement for CMSG struct manipulation.
1.51 itojun 438: * This basically behaves the same as ALIGN() ARCH/include/param.h.
439: * We declare it separately for two reasons:
440: * (1) avoid dependency between machine/param.h, and (2) to sync with kernel's
441: * idea of ALIGNBYTES at runtime.
442: * without (2), we can't guarantee binary compatibility in case of future
443: * changes in ALIGNBYTES.
1.44 itojun 444: */
1.53 itojun 445: #define __CMSG_ALIGN(n) (((n) + __cmsg_alignbytes()) & ~__cmsg_alignbytes())
446: #ifdef _KERNEL
1.54 augustss 447: #define CMSG_ALIGN(n) __CMSG_ALIGN(n)
1.53 itojun 448: #endif
1.44 itojun 449:
1.8 mycroft 450: /* given pointer to struct cmsghdr, return pointer to next cmsghdr */
1.1 cgd 451: #define CMSG_NXTHDR(mhdr, cmsg) \
1.63 kleink 452: (((__caddr_t)(cmsg) + __CMSG_ALIGN((cmsg)->cmsg_len) + \
1.53 itojun 453: __CMSG_ALIGN(sizeof(struct cmsghdr)) > \
1.63 kleink 454: (((__caddr_t)(mhdr)->msg_control) + (mhdr)->msg_controllen)) ? \
1.1 cgd 455: (struct cmsghdr *)NULL : \
1.63 kleink 456: (struct cmsghdr *)((__caddr_t)(cmsg) + \
457: __CMSG_ALIGN((cmsg)->cmsg_len)))
1.1 cgd 458:
1.62 itojun 459: /*
460: * RFC 2292 requires to check msg_controllen, in case that the kernel returns
461: * an empty list for some reasons.
462: */
463: #define CMSG_FIRSTHDR(mhdr) \
464: ((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
465: (struct cmsghdr *)(mhdr)->msg_control : \
466: (struct cmsghdr *)NULL)
1.1 cgd 467:
1.53 itojun 468: #define CMSG_SPACE(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(l))
469: #define CMSG_LEN(l) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (l))
1.44 itojun 470:
1.1 cgd 471: /* "Socket"-level control message types: */
472: #define SCM_RIGHTS 0x01 /* access rights (array of int) */
1.67 bjh21 473: #if defined(_NETBSD_SOURCE)
1.18 thorpej 474: #define SCM_TIMESTAMP 0x02 /* timestamp (struct timeval) */
1.42 kleink 475: #define SCM_CREDS 0x04 /* credentials (struct sockcred) */
476: #endif
1.29 kleink 477:
478: /*
479: * Types of socket shutdown(2).
480: */
481: #define SHUT_RD 0 /* Disallow further receives. */
482: #define SHUT_WR 1 /* Disallow further sends. */
483: #define SHUT_RDWR 2 /* Disallow further sends/receives. */
1.1 cgd 484:
1.67 bjh21 485: #if defined(_NETBSD_SOURCE)
1.1 cgd 486: /*
487: * 4.3 compat sockaddr, move to compat file later
488: */
489: struct osockaddr {
1.63 kleink 490: __uint16_t sa_family; /* address family */
1.60 kleink 491: char sa_data[14]; /* up to 14 bytes of direct address */
1.1 cgd 492: };
493:
494: /*
495: * 4.3-compat message header (move to compat file later).
496: */
497: struct omsghdr {
1.63 kleink 498: __caddr_t msg_name; /* optional address */
499: int msg_namelen; /* size of address */
500: struct iovec *msg_iov; /* scatter/gather array */
501: int msg_iovlen; /* # elements in msg_iov */
502: __caddr_t msg_accrights; /* access rights sent/received */
503: int msg_accrightslen;
1.1 cgd 504: };
1.42 kleink 505: #endif
1.51 itojun 506:
1.59 toshii 507: #include <sys/cdefs.h>
508:
509: __BEGIN_DECLS
1.51 itojun 510: int __cmsg_alignbytes __P((void));
1.59 toshii 511: __END_DECLS
1.1 cgd 512:
1.12 briggs 513: #ifndef _KERNEL
1.1 cgd 514:
515: __BEGIN_DECLS
1.65 kleink 516: int accept __P((int, struct sockaddr * __restrict, socklen_t * __restrict));
1.42 kleink 517: int bind __P((int, const struct sockaddr *, socklen_t));
518: int connect __P((int, const struct sockaddr *, socklen_t));
1.65 kleink 519: int getpeername __P((int, struct sockaddr * __restrict,
520: socklen_t * __restrict));
521: int getsockname __P((int, struct sockaddr * __restrict,
522: socklen_t * __restrict));
523: int getsockopt __P((int, int, int, void * __restrict,
524: socklen_t * __restrict));
1.1 cgd 525: int listen __P((int, int));
1.8 mycroft 526: ssize_t recv __P((int, void *, size_t, int));
1.65 kleink 527: ssize_t recvfrom __P((int, void * __restrict, size_t, int,
528: struct sockaddr * __restrict, socklen_t * __restrict));
1.8 mycroft 529: ssize_t recvmsg __P((int, struct msghdr *, int));
530: ssize_t send __P((int, const void *, size_t, int));
531: ssize_t sendto __P((int, const void *,
1.42 kleink 532: size_t, int, const struct sockaddr *, socklen_t));
1.8 mycroft 533: ssize_t sendmsg __P((int, const struct msghdr *, int));
1.42 kleink 534: int setsockopt __P((int, int, int, const void *, socklen_t));
1.1 cgd 535: int shutdown __P((int, int));
1.64 kleink 536: int sockatmark __P((int));
1.1 cgd 537: int socket __P((int, int, int));
538: int socketpair __P((int, int, int, int *));
539: __END_DECLS
1.14 christos 540: #endif /* !_KERNEL */
1.1 cgd 541:
1.2 mycroft 542: #endif /* !_SYS_SOCKET_H_ */
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