diff options
Diffstat (limited to 'socket/sys')
| -rw-r--r-- | socket/sys/socket.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/socket/sys/socket.h b/socket/sys/socket.h new file mode 100644 index 0000000..172c897 --- /dev/null +++ b/socket/sys/socket.h @@ -0,0 +1,181 @@ +/* Declarations of socket constants, types, and functions. +Copyright (C) 1991, 92, 94, 95, 96 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 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> + + +/* This operating system-specific header file defines the SOCK_*, PF_*, + AF_*, MSG_*, SOL_*, and SO_* constants, and the `struct sockaddr', + `struct msghdr', and `struct linger' types. */ +#include <socketbits.h> + + +/* This is the type we use for generic socket address arguments. + + With GCC 2.7 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__ < 7)) +#define __SOCKADDR_ARG struct sockaddr * +#define __CONST_SOCKADDR_ARG __const struct sockaddr * +#else +/* Add more `struct sockaddr_AF' types here as necessary. + These are all the ones I found on NetBSD and Linux. */ +#define __SOCKADDR_ALLTYPES \ + __SOCKADDR_ONETYPE (sockaddr) \ + __SOCKADDR_ONETYPE (sockaddr_at) \ + __SOCKADDR_ONETYPE (sockaddr_ax25) \ + __SOCKADDR_ONETYPE (sockaddr_dl) \ + __SOCKADDR_ONETYPE (sockaddr_eon) \ + __SOCKADDR_ONETYPE (sockaddr_in) \ + __SOCKADDR_ONETYPE (sockaddr_in6) \ + __SOCKADDR_ONETYPE (sockaddr_inarp) \ + __SOCKADDR_ONETYPE (sockaddr_ipx) \ + __SOCKADDR_ONETYPE (sockaddr_iso) \ + __SOCKADDR_ONETYPE (sockaddr_ns) \ + __SOCKADDR_ONETYPE (sockaddr_un) \ + __SOCKADDR_ONETYPE (sockaddr_x25) + +#define __SOCKADDR_ONETYPE(type) struct type *__##type##__; +typedef union { __SOCKADDR_ALLTYPES + } __SOCKADDR_ARG __attribute__ ((__transparent_union__)); +#undef __SOCKADDR_ONETYPE +#define __SOCKADDR_ONETYPE(type) __const struct type *__##type##__; +typedef union { __SOCKADDR_ALLTYPES + } __CONST_SOCKADDR_ARG __attribute__ ((__transparent_union__)); +#undef __SOCKADDR_ONETYPE +#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, int __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, int __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, __CONST_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, + __CONST_SOCKADDR_ARG __addr, size_t __len)); +extern int connect __P ((int __fd, + __CONST_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)); + + +/* 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)); +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, + __CONST_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)); + + +/* 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)); + + +/* 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)); + + +/* FDTYPE is S_IFSOCK or another S_IF* macro defined in <sys/stat.h>; + returns 1 if FD is open on an object of the indicated type, 0 if not, + or -1 for errors (setting errno). */ +extern int isfdtype __P ((int __fd, int __fdtype)); + +__END_DECLS + +#endif /* sys/socket.h */ |