/* $NetBSD: socket.h,v 1.107 2012/06/22 18:26:35 christos Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)socket.h 8.6 (Berkeley) 5/3/95 */ #ifndef _SYS_SOCKET_H_ #define _SYS_SOCKET_H_ #include /* * Definitions related to sockets: types, address families, options. */ /* * Data types. */ #include #ifndef sa_family_t typedef __sa_family_t sa_family_t; #define sa_family_t __sa_family_t #endif #ifndef socklen_t typedef __socklen_t socklen_t; #define socklen_t __socklen_t #endif #include #ifdef _BSD_SIZE_T_ typedef _BSD_SIZE_T_ size_t; #undef _BSD_SIZE_T_ #endif #ifdef _BSD_SSIZE_T_ typedef _BSD_SSIZE_T_ ssize_t; #undef _BSD_SSIZE_T_ #endif #include #include /* * Socket types. */ #define SOCK_STREAM 1 /* stream socket */ #define SOCK_DGRAM 2 /* datagram socket */ #define SOCK_RAW 3 /* raw-protocol interface */ #define SOCK_RDM 4 /* reliably-delivered message */ #define SOCK_SEQPACKET 5 /* sequenced packet stream */ #define SOCK_CLOEXEC 0x10000000 /* set close on exec on socket */ #define SOCK_NONBLOCK 0x20000000 /* set non blocking i/o socket */ #define SOCK_NOSIGPIPE 0x40000000 /* don't send sigpipe */ #define SOCK_FLAGS_MASK 0xf0000000 /* flags mask */ /* * Option flags per-socket. */ #define SO_DEBUG 0x0001 /* turn on debugging info recording */ #define SO_ACCEPTCONN 0x0002 /* socket has had listen() */ #define SO_REUSEADDR 0x0004 /* allow local address reuse */ #define SO_KEEPALIVE 0x0008 /* keep connections alive */ #define SO_TYPE 0x0010 /* get socket type */ #define SO_PASSCRED 0x0012 #define SO_PEERCRED 0x0014 /* * Additional options, not kept in so_options. */ #define SO_SNDBUF 0x1001 /* send buffer size */ #define SO_RCVBUF 0x1002 /* receive buffer size */ #define SO_SNDLOWAT 0x1003 /* send low-water mark */ #define SO_RCVLOWAT 0x1004 /* receive low-water mark */ /* SO_OSNDTIMEO 0x1005 */ /* SO_ORCVTIMEO 0x1006 */ #define SO_ERROR 0x1007 /* get error status and clear */ #define SO_OVERFLOWED 0x1009 /* datagrams: return packets dropped */ /* * Level number for (get/set)sockopt() to apply to socket itself. */ #define SOL_SOCKET 0xffff /* options for socket level */ /* * Address families. */ #define AF_UNSPEC 0 /* unspecified */ #define AF_LOCAL 1 /* local to host */ #define AF_UNIX AF_LOCAL /* backward compatibility */ #define AF_INET 2 /* internetwork: UDP, TCP, etc. */ #define AF_IMPLINK 3 /* arpanet imp addresses */ #define AF_PUP 4 /* pup protocols: e.g. BSP */ #define AF_CHAOS 5 /* mit CHAOS protocols */ #define AF_NS 6 /* XEROX NS protocols */ #define AF_ISO 7 /* ISO protocols */ #define AF_OSI AF_ISO #define AF_ECMA 8 /* european computer manufacturers */ #define AF_DATAKIT 9 /* datakit protocols */ #define AF_CCITT 10 /* CCITT protocols, X.25 etc */ #define AF_SNA 11 /* IBM SNA */ #define AF_DECnet 12 /* DECnet */ #define AF_DLI 13 /* DEC Direct data link interface */ #define AF_LAT 14 /* LAT */ #define AF_HYLINK 15 /* NSC Hyperchannel */ #define AF_APPLETALK 16 /* Apple Talk */ #define AF_ROUTE 17 /* Internal Routing Protocol */ #define AF_LINK 18 /* Link layer interface */ #if defined(_NETBSD_SOURCE) #define pseudo_AF_XTP 19 /* eXpress Transfer Protocol (no AF) */ #endif #define AF_COIP 20 /* connection-oriented IP, aka ST II */ #define AF_CNT 21 /* Computer Network Technology */ #if defined(_NETBSD_SOURCE) #define pseudo_AF_RTIP 22 /* Help Identify RTIP packets */ #endif #define AF_IPX 23 /* Novell Internet Protocol */ #define AF_INET6 24 /* IP version 6 */ #if defined(_NETBSD_SOURCE) #define pseudo_AF_PIP 25 /* Help Identify PIP packets */ #endif #define AF_ISDN 26 /* Integrated Services Digital Network*/ #define AF_E164 AF_ISDN /* CCITT E.164 recommendation */ #define AF_NATM 27 /* native ATM access */ #define AF_ARP 28 /* (rev.) addr. res. prot. (RFC 826) */ #if defined(_NETBSD_SOURCE) #define pseudo_AF_KEY 29 /* Internal key management protocol */ #define pseudo_AF_HDRCMPLT 30 /* Used by BPF to not rewrite hdrs in interface output routine */ #endif #define AF_BLUETOOTH 31 /* Bluetooth: HCI, SCO, L2CAP, RFCOMM */ #define AF_IEEE80211 32 /* IEEE80211 */ #define AF_MAX 33 #ifndef gid_t typedef __gid_t gid_t; /* group id */ #define gid_t __gid_t #endif #ifndef uid_t typedef __uid_t uid_t; /* user id */ #define uid_t __uid_t #endif #if defined(__minix) && !defined(_STANDALONE) #include #endif /* * Structure used by kernel to store most * addresses. */ struct sockaddr { sa_family_t sa_family; char sa_data[8]; /* Big enough for sockaddr_in */ }; /* * RFC 2553: protocol-independent placeholder for socket addresses */ #define _SS_MAXSIZE 128 #define _SS_ALIGNSIZE (sizeof(__int64_t)) #define _SS_PAD1SIZE (_SS_ALIGNSIZE - 1) #define _SS_PAD2SIZE (_SS_MAXSIZE - 1 - \ _SS_PAD1SIZE - _SS_ALIGNSIZE) #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE) struct sockaddr_storage { sa_family_t ss_family; /* address family */ char __ss_pad1[_SS_PAD1SIZE]; __int64_t __ss_align;/* force desired structure storage alignment */ char __ss_pad2[_SS_PAD2SIZE]; }; #define sstosa(__ss) ((struct sockaddr *)(__ss)) #define sstocsa(__ss) ((const struct sockaddr *)(__ss)) #endif /* _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */ /* * Protocol families, same as address families for now. */ #define PF_UNSPEC AF_UNSPEC #define PF_LOCAL AF_LOCAL #define PF_UNIX PF_LOCAL /* backward compatibility */ #define PF_FILE PF_LOCAL /* Minix compatibility */ #define PF_INET AF_INET #define PF_IMPLINK AF_IMPLINK #define PF_PUP AF_PUP #define PF_CHAOS AF_CHAOS #define PF_NS AF_NS #define PF_ISO AF_ISO #define PF_OSI AF_ISO #define PF_ECMA AF_ECMA #define PF_DATAKIT AF_DATAKIT #define PF_CCITT AF_CCITT #define PF_SNA AF_SNA #define PF_DECnet AF_DECnet #define PF_DLI AF_DLI #define PF_LAT AF_LAT #define PF_HYLINK AF_HYLINK #define PF_APPLETALK AF_APPLETALK #define PF_OROUTE AF_OROUTE #define PF_LINK AF_LINK #if defined(_NETBSD_SOURCE) #define PF_XTP pseudo_AF_XTP /* really just proto family, no AF */ #endif #define PF_COIP AF_COIP #define PF_CNT AF_CNT #define PF_INET6 AF_INET6 #define PF_IPX AF_IPX /* same format as AF_NS */ #if defined(_NETBSD_SOURCE) #define PF_RTIP pseudo_AF_RTIP /* same format as AF_INET */ #define PF_PIP pseudo_AF_PIP #endif #define PF_ISDN AF_ISDN /* same as E164 */ #define PF_E164 AF_E164 #define PF_NATM AF_NATM #define PF_ARP AF_ARP #if defined(_NETBSD_SOURCE) #define PF_KEY pseudo_AF_KEY /* like PF_ROUTE, only for key mgmt */ #endif #define PF_BLUETOOTH AF_BLUETOOTH #define PF_MPLS AF_MPLS #define PF_ROUTE AF_ROUTE #define PF_MAX AF_MAX /* * Message header for recvmsg and sendmsg calls. * Used value-result for recvmsg, value only for sendmsg. */ struct msghdr { void *msg_name; /* optional address */ socklen_t msg_namelen; /* size of address */ struct iovec *msg_iov; /* scatter/gather array */ int msg_iovlen; /* # elements in msg_iov */ void *msg_control; /* ancillary data, see below */ socklen_t msg_controllen; /* ancillary data buffer len */ int msg_flags; /* flags on received message */ }; #define MSG_OOB 0x0001 /* process out-of-band data */ #define MSG_PEEK 0x0002 /* peek at incoming message */ #define MSG_DONTROUTE 0x0004 /* send without using routing tables */ #define MSG_EOR 0x0008 /* complete record */ /* * Header for ancillary data objects in msg_control buffer. * Used for additional information with/about a datagram * not expressible by flags. The format is a sequence * of message elements headed by cmsghdr structures. */ struct cmsghdr { socklen_t cmsg_len; /* data byte count, including hdr */ int cmsg_level; /* originating protocol */ int cmsg_type; /* protocol-specific type */ /* followed by u_char cmsg_data[]; */ }; #define CMSG_FIRSTHDR(mhdr) \ ( (mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \ (struct cmsghdr *)(mhdr)->msg_control : \ (struct cmsghdr *)NULL ) #define CMSG_ALIGN(len) \ ( (len % sizeof(long) == 0) ? \ len : \ len + sizeof(long) - (len % sizeof(long)) ) #define CMSG_NXTHDR(mhdr, cmsg) \ ( ((cmsg) == NULL) ? CMSG_FIRSTHDR(mhdr) : \ (((unsigned char *)(cmsg) + CMSG_ALIGN((cmsg)->cmsg_len) \ + CMSG_ALIGN(sizeof(struct cmsghdr)) > \ (unsigned char *)((mhdr)->msg_control) + \ (mhdr)->msg_controllen) ? \ (struct cmsghdr *)NULL : \ (struct cmsghdr *)((unsigned char *)(cmsg) + \ CMSG_ALIGN((cmsg)->cmsg_len))) ) #define CMSG_DATA(cmsg) \ ( (unsigned char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr)) ) #define CMSG_SPACE(l) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(l)) #define CMSG_LEN(l) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (l)) /* "Socket"-level control message types: */ #define SCM_RIGHTS 0x01 #define SCM_CREDENTIALS 0x02 #define SCM_SECURITY 0x04 /* * Types of socket shutdown(2). */ #define SHUT_RD 0 /* Disallow further receives. */ #define SHUT_WR 1 /* Disallow further sends. */ #define SHUT_RDWR 2 /* Disallow further sends/receives. */ #include __BEGIN_DECLS int __cmsg_alignbytes(void); __END_DECLS __BEGIN_DECLS int accept(int, struct sockaddr * __restrict, socklen_t * __restrict); int bind(int, const struct sockaddr *, socklen_t); int connect(int, const struct sockaddr *, socklen_t); int getpeername(int, struct sockaddr * __restrict, socklen_t * __restrict); int getsockname(int, struct sockaddr * __restrict, socklen_t * __restrict); int getsockopt(int, int, int, void *__restrict, socklen_t * __restrict); int listen(int, int); ssize_t recv(int, void *, size_t, int); ssize_t recvfrom(int, void *__restrict, size_t, int, struct sockaddr * __restrict, socklen_t * __restrict); ssize_t recvmsg(int, struct msghdr *, int); ssize_t send(int, const void *, size_t, int); ssize_t sendto(int, const void *, size_t, int, const struct sockaddr *, socklen_t); ssize_t sendmsg(int, const struct msghdr *, int); int setsockopt(int, int, int, const void *, socklen_t); int shutdown(int, int); int sockatmark(int); int socket(int, int, int); int socketpair(int, int, int, int *); __END_DECLS #endif /* !_SYS_SOCKET_H_ */