#include <sys/socket.h>

#define T(t) (t*)0;

#define F(t,n) {t *y = &x.;;}

#define C(n) switch(n){case n:;}

static void f()

{

T(size_t)

T(ssize_t)

T(socklen_t)

T(sa_family_t)

{

struct sockaddr x;

F(sa_family_t,sa_family)

F(char, sa_data[0])

}

{

struct sockaddr_storage x;

F(sa_family_t, ss_family)

}

{

struct msghdr x;

F(void*,msg_name)

F(socklen_t,msg_namelen)

F(struct iovec*,msg_iov)

F(int,msg_iovlen)

F(void*,msg_control)

F(socklen_t,msg_controllen)

F(int,msg_flags)

}

{

struct cmsghdr x;

F(socklen_t,cmsg_len)

F(int,cmsg_level)

F(int,cmsg_type)

}

C(SCM_RIGHTS)

#ifndef CMSG_DATA

#error no CMSG_DATA

#endif

#ifndef CMSG_NXTHDR

#error no CMSG_NXTHDR

#endif

#ifndef CMSG_FIRSTHDR

#error CMSG_FIRSTTHDR

#endif

{

struct linger x;

F(int,l_onoff)

F(int,l_linger)

}

C(SOCK_DGRAM)

C(SOCK_RAW)

C(SOCK_SEQPACKET)

C(SOCK_STREAM)

C(SOL_SOCKET)

C(SO_ACCEPTCONN)

C(SO_BROADCAST)

C(SO_DEBUG)

C(SO_DONTROUTE)

C(SO_ERROR)

C(SO_KEEPALIVE)

C(SO_LINGER)

C(SO_OOBINLINE)

C(SO_RCVBUF)

C(SO_RCVLOWAT)

C(SO_RCVTIMEO)

C(SO_REUSEADDR)

C(SO_SNDBUF)

C(SO_SNDLOWAT)

C(SO_SNDTIMEO)

C(SO_TYPE)

C(SOMAXCONN)

C(MSG_CTRUNC)

C(MSG_DONTROUTE)

C(MSG_EOR)

C(MSG_OOB)

C(MSG_NOSIGNAL)

C(MSG_PEEK)

C(MSG_TRUNC)

C(MSG_WAITALL)

C(AF_INET)

C(AF_INET6)

C(AF_UNIX)

C(AF_UNSPEC)

C(SHUT_RD)

C(SHUT_RDWR)

C(SHUT_WR)

int(*p_accept)(int,struct sockaddr*restrict,socklen_t*restrict) = accept;

int(*p_bind)(int,const struct sockaddr*,socklen_t) = bind;

int(*p_connect)(int,const struct sockaddr*,socklen_t) = connect;

int(*p_getpeername)(int,struct sockaddr*restrict,socklen_t*restrict) = getpeername;

int(*p_getsockname)(int,struct sockaddr*restrict,socklen_t*restrict) = getsockname;

int(*p_getsockopt)(int,int,int,void*restrict,socklen_t*restrict) = getsockopt;

int(*p_listen)(int,int) = listen;

ssize_t(*p_recv)(int,void*,size_t,int) = recv;

ssize_t(*p_recvfrom)(int,void*restrict,size_t,int,struct sockaddr*restrict,socklen_t*restrict) = recvfrom;

ssize_t(*p_recvmsg)(int,struct msghdr*,int) = recvmsg;

ssize_t(*p_send)(int,const void*,size_t,int) = send;

ssize_t(*p_sendmsg)(int,const struct msghdr*,int) = sendmsg;

ssize_t(*p_sendto)(int,const void*,size_t,int,const struct sockaddr*,socklen_t) = sendto;

int(*p_setsockopt)(int,int,int,const void*,socklen_t) = setsockopt;

int(*p_shutdown)(int,int) = shutdown;

int(*p_sockatmark)(int) = sockatmark;

int(*p_socket)(int,int,int) = socket;

int(*p_socketpair)(int,int,int,int[]) = socketpair;

}