/* posix */#include <sys/types.h>#include <unistd.h>#include <stdlib.h>#include <stdio.h>#include <fcntl.h>#include <string.h>#include <errno.h>#include <signal.h>#include <sys/stat.h> /* socket extensions */#include <sys/uio.h>#include <sys/socket.h>#include <netinet/in.h>#include <sys/un.h> /* plan 9 */#include "lib.h"#include "sys9.h" #include "priv.h" intbind(int fd, void *a, int alen){	int n, len, cfd, port;	Rock *r;	char msg[128]; 	/* assign the address */	r = _sock_findrock(fd, 0);	if(r == 0){		errno = ENOTSOCK;		return -1;	}	if(alen > sizeof(r->addr)){		errno = ENAMETOOLONG;		return -1;	}	memmove(&r->addr, a, alen); 	/* the rest is IP sepecific */	switch(r->domain){	case PF_INET:	case PF_INET6:		cfd = open(r->ctl, O_RDWR);		if(cfd < 0){			errno = EBADF;			return -1;		}		_sock_ntop(r->domain, &r->addr, nil, 0, &port);		if(port > 0)			snprintf(msg, sizeof msg, "bind %d", port);		else			strcpy(msg, "bind *");		n = write(cfd, msg, strlen(msg));		if(n < 0){			errno = EOPNOTSUPP;	/* Improve error reporting!!! */			close(cfd);			return -1;		}		close(cfd); 		if(port <= 0)			_sock_ingetaddr(r, &r->addr, &len, "local");	} 	return 0;}