diff options
Diffstat (limited to 'socket/sys/socket.h')
| -rw-r--r-- | socket/sys/socket.h | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/socket/sys/socket.h b/socket/sys/socket.h new file mode 100644 index 0000000000..65217216a0 --- /dev/null +++ b/socket/sys/socket.h @@ -0,0 +1,310 @@ +/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _SYS_SOCKET_H + +#define _SYS_SOCKET_H 1 +#include <features.h> + +__BEGIN_DECLS + +#define __need_size_t +#include <stddef.h> + + +/* Types of sockets. */ +enum __socket_type +{ + SOCK_STREAM = 1, /* Sequenced, reliable, connection-based + byte streams. */ + SOCK_DGRAM = 2, /* Connectionless, unreliable datagrams + of fixed maximum length. */ + SOCK_RAW = 3, /* Raw protocol interface. */ + SOCK_RDM = 4, /* Reliably-delivered messages. */ + SOCK_SEQPACKET = 5, /* Sequenced, reliable, connection-based, + datagrams of fixed maximum length. */ +}; + +/* Protocol families. */ +#define PF_UNSPEC 0 /* Unspecified. */ +#define PF_LOCAL 1 /* Local to host (pipes and file-domain). */ +#define PF_UNIX PF_LOCAL /* Old BSD name for PF_LOCAL. */ +#define PF_INET 2 /* IP protocol family. */ +#define PF_IMPLINK 3 /* ARPAnet IMP protocol. */ +#define PF_PUP 4 /* PUP protocols. */ +#define PF_CHAOS 5 /* MIT Chaos protocols. */ +#define PF_NS 6 /* Xerox NS protocols. */ +#define PF_ISO 7 /* ISO protocols. */ +#define PF_OSI PF_ISO +#define PF_ECMA 8 /* ECMA protocols. */ +#define PF_DATAKIT 9 /* AT&T Datakit protocols. */ +#define PF_CCITT 10 /* CCITT protocols (X.25 et al). */ +#define PF_SNA 11 /* IBM SNA protocol. */ +#define PF_DECnet 12 /* DECnet protocols. */ +#define PF_DLI 13 /* Direct data link interface. */ +#define PF_LAT 14 /* DEC Local Area Transport protocol. */ +#define PF_HYLINK 15 /* NSC Hyperchannel protocol. */ +#define PF_APPLETALK 16 /* Don't use this. */ +#define PF_ROUTE 17 /* Internal Routing Protocol. */ +#define PF_LINK 18 /* Link layer interface. */ +#define PF_XTP 19 /* eXpress Transfer Protocol (no AF). */ +#define PF_COIP 20 /* Connection-oriented IP, aka ST II. */ +#define PF_CNT 21 /* Computer Network Technology. */ +#define PF_RTIP 22 /* Help Identify RTIP packets. **/ +#define PF_IPX 23 /* Novell Internet Protocol. */ +#define PF_SIP 24 /* Simple Internet Protocol. */ +#define PF_PIP 25 /* Help Identify PIP packets. */ +#define PF_MAX 26 + +/* Address families. */ +#define AF_UNSPEC PF_UNSPEC +#define AF_LOCAL PF_LOCAL +#define AF_UNIX PF_UNIX +#define AF_INET PF_INET +#define AF_IMPLINK PF_IMPLINK +#define AF_PUP PF_PUP +#define AF_CHAOS PF_CHAOS +#define AF_NS PF_NS +#define AF_ISO PF_ISO +#define AF_OSI PF_OSI +#define AF_ECMA PF_ECMA +#define AF_DATAKIT PF_DATAKIT +#define AF_CCITT PF_CCITT +#define AF_SNA PF_SNA +#define AF_DECnet PF_DECnet +#define AF_DLI PF_DLI +#define AF_LAT PF_LAT +#define AF_HYLINK PF_HYLINK +#define AF_APPLETALK PF_APPLETALK +#define AF_ROUTE PF_ROUTE +#define AF_LINK PF_LINK +#define pseudo_AF_XTP PF_XTP +#define AF_COIP PF_COIP +#define AF_CNT PF_CNT +#define pseudo_AF_RTIP PF_RTIP +#define AF_IPX PF_IPX +#define AF_SIP PF_SIP +#define pseudo_AF_PIP PF_PIP +#define AF_MAX PF_MAX + + +/* Get the definition of the macro to define the common sockaddr members. */ +#include <sockaddrcom.h> + +/* Structure describing a generic socket address. */ +struct sockaddr + { + __SOCKADDR_COMMON (sa_); /* Common data: address family and length. */ + char sa_data[14]; /* Address data. */ + }; + +/* This is the type we use for generic socket address arguments. + + NOTE: Since this functionality is volatile, I'm disabling the use of it for + now. + + With GCC 2.6 and later, the funky union causes redeclarations or uses with + any of the listed types to be allowed without complaint. */ +#if (!defined (__GNUC__) || __GNUC__ < 2 || \ + /*(__GNUC__ == 2 && __GNUC_MINOR__ < 6)*/ 1) +#define __SOCKADDR_ARG struct sockaddr * +#else +/* Bring these names into being at top-level scope, in case they have not been + defined yet. Add more `struct sockaddr_AF' types here as necessary. */ +struct sockaddr_in; +struct sockaddr_un; +struct sockaddr_ns; +typedef union { struct sockaddr *__sa; + struct sockaddr_in *__sa_in; + struct sockaddr_un *__sa_un; + struct sockaddr_ns *__sa_ns; + } __SOCKADDR_ARG __attribute__ ((transparent_union)); +#endif + + +/* Create a new socket of type TYPE in domain DOMAIN, using + protocol PROTOCOL. If PROTOCOL is zero, one is chosen automatically. + Returns a file descriptor for the new socket, or -1 for errors. */ +extern int socket __P ((int __domain, enum __socket_type __type, + int __protocol)); + +/* Create two new sockets, of type TYPE in domain DOMAIN and using + protocol PROTOCOL, which are connected to each other, and put file + descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero, + one will be chosen automatically. Returns 0 on success, -1 for errors. */ +extern int socketpair __P ((int __domain, enum __socket_type __type, + int __protocol, int __fds[2])); + +/* Give the socket FD the local address ADDR (which is LEN bytes long). */ +extern int bind __P ((int __fd, __SOCKADDR_ARG __addr, size_t __len)); + +/* Put the local address of FD into *ADDR and its length in *LEN. */ +extern int getsockname __P ((int __fd, __SOCKADDR_ARG __addr, + size_t *__len)); + +/* Open a connection on socket FD to peer at ADDR (which LEN bytes long). + For connectionless socket types, just set the default address to send to + and the only address from which to accept transmissions. + Return 0 on success, -1 for errors. */ +extern int connect __P ((int __fd, __SOCKADDR_ARG __addr, size_t __len)); + +/* Put the address of the peer connected to socket FD into *ADDR + (which is *LEN bytes long), and its actual length into *LEN. */ +extern int getpeername __P ((int __fd, __SOCKADDR_ARG __addr, + size_t *__len)); + + +/* Bits in the FLAGS argument to `send', `recv', et al. */ +enum + { + MSG_OOB = 0x01, /* Process out-of-band data. */ + MSG_PEEK = 0x02, /* Peek at incoming messages. */ + MSG_DONTROUTE = 0x04, /* Don't use local routing. */ + MSG_EOR = 0x08, /* Data completes record. */ + MSG_TRUNC = 0x10, /* Data discarded before delivery. */ + MSG_CTRUNC = 0x20, /* Control data lost before delivery. */ + MSG_WAITALL = 0x40, /* Wait for full request or error. */ + MSG_DONTWAIT = 0x80, /* This message should be nonblocking. */ + }; + +/* Send N bytes of BUF to socket FD. Returns the number sent or -1. */ +extern int send __P ((int __fd, __ptr_t __buf, size_t __n, int __flags)); + +/* Read N bytes into BUF from socket FD. + Returns the number read or -1 for errors. */ +extern int recv __P ((int __fd, __ptr_t __buf, size_t __n, int __flags)); + +/* Send N bytes of BUF on socket FD to peer at address ADDR (which is + ADDR_LEN bytes long). Returns the number sent, or -1 for errors. */ +extern int sendto __P ((int __fd, __ptr_t __buf, size_t __n, int __flags, + __SOCKADDR_ARG __addr, size_t __addr_len)); + +/* Read N bytes into BUF through socket FD. + If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of + the sender, and store the actual size of the address in *ADDR_LEN. + Returns the number of bytes read or -1 for errors. */ +extern int recvfrom __P ((int __fd, __ptr_t __buf, size_t __n, int __flags, + __SOCKADDR_ARG __addr, size_t *__addr_len)); + + + +/* Structure describing messages sent by + `sendmsg' and received by `recvmsg'. */ +struct msghdr + { + __ptr_t msg_name; /* Address to send to/receive from. */ + size_t msg_namelen; /* Length of address data. */ + + struct iovec *msg_iov; /* Vector of data to send/receive into. */ + size_t msg_iovlen; /* Number of elements in the vector. */ + + __ptr_t msg_accrights; /* Access rights information. */ + size_t msg_accrightslen; /* Length of access rights information. */ + }; + +/* Send a message described MESSAGE on socket FD. + Returns the number of bytes sent, or -1 for errors. */ +extern int sendmsg __P ((int __fd, __const struct msghdr *__message, + int __flags)); + +/* Receive a message as described by MESSAGE from socket FD. + Returns the number of bytes read or -1 for errors. */ +extern int recvmsg __P ((int __fd, struct msghdr *__message, int __flags)); + + +/* Protocol number used to manipulate socket-level options + with `getsockopt' and `setsockopt'. */ +#define SOL_SOCKET 0xffff + +/* Socket-level options for `getsockopt' and `setsockopt'. */ +enum + { + SO_DEBUG = 0x0001, /* Record debugging information. */ + SO_ACCEPTCONN = 0x0002, /* Accept connections on socket. */ + SO_REUSEADDR = 0x0004, /* Allow reuse of local addresses. */ + SO_KEEPALIVE = 0x0008, /* Keep connections alive and send + SIGPIPE when they die. */ + SO_DONTROUTE = 0x0010, /* Don't do local routing. */ + SO_BROADCAST = 0x0020, /* Allow transmission of + broadcast messages. */ + SO_USELOOPBACK = 0x0040, /* Use the software loopback to avoid + hardware use when possible. */ + SO_LINGER = 0x0080, /* Block on close of a reliable + socket to transmit pending data. */ + SO_OOBINLINE = 0x0100, /* Receive out-of-band data in-band. */ + + SO_REUSEPORT = 0x0200, /* Allow local address and port reuse. */ + + SO_SNDBUF = 0x1001, /* Send buffer size. */ + SO_RCVBUF = 0x1002, /* Receive buffer. */ + SO_SNDLOWAT = 0x1003, /* Send low-water mark. */ + SO_RCVLOWAT = 0x1004, /* Receive low-water mark. */ + SO_SNDTIMEO = 0x1005, /* Send timeout. */ + SO_RCVTIMEO = 0x1006, /* Receive timeout. */ + + SO_ERROR = 0x1007, /* Get and clear error status. */ + SO_STYLE = 0x1008, /* Get socket connection style. */ + SO_TYPE = SO_STYLE, /* Compatible name for SO_STYLE. */ + }; + +/* Structure used to manipulate the SO_LINGER option. */ +struct linger + { + int l_onoff; /* Nonzero to linger on close. */ + int l_linger; /* Time to linger. */ + }; + + +/* Put the current value for socket FD's option OPTNAME at protocol level LEVEL + into OPTVAL (which is *OPTLEN bytes long), and set *OPTLEN to the value's + actual length. Returns 0 on success, -1 for errors. */ +extern int getsockopt __P ((int __fd, int __level, int __optname, + __ptr_t __optval, size_t *__optlen)); + +/* Set socket FD's option OPTNAME at protocol level LEVEL + to *OPTVAL (which is OPTLEN bytes long). + Returns 0 on success, -1 for errors. */ +extern int setsockopt __P ((int __fd, int __level, int __optname, + __ptr_t __optval, size_t __optlen)); + + +/* Prepare to accept connections on socket FD. + N connection requests will be queued before further requests are refused. + Returns 0 on success, -1 for errors. */ +extern int listen __P ((int __fd, unsigned int __n)); + +/* Await a connection on socket FD. + When a connection arrives, open a new socket to communicate with it, + set *ADDR (which is *ADDR_LEN bytes long) to the address of the connecting + peer and *ADDR_LEN to the address's actual length, and return the + new socket's descriptor, or -1 for errors. */ +extern int accept __P ((int __fd, __SOCKADDR_ARG __addr, + size_t *__addr_len)); + +/* Shut down all or part of the connection open on socket FD. + HOW determines what to shut down: + 0 = No more receptions; + 1 = No more transmissions; + 2 = No more receptions or transmissions. + Returns 0 on success, -1 for errors. */ +extern int shutdown __P ((int __fd, int __how)); + + +__END_DECLS + +#endif /* sys/socket.h */ |