使用kqueue的str_cli函数

void str_cli(FILE *fp, int sockfd)
{
    int              kq, i, n, nev, stdineof = , isfile;
    char             buf[MAXLINE];
    struct kevent    kev[];
    struct timespec  ts;
    struct stat      st;

    isfile = ((fstat(fileno(fp), &st) == ) &&
              (st.st_mode & S_IFMT) == S_IFREG);

    EV_SET(&kev[], fileno(fp), EVFILT_READ, EV_ADD, , , NULL);
    EV_SET(&kev[], sockfd, EVFILT_READ, EV_ADD, , , NULL);

    kq = kqueue();
    ts.tv_sec = ts.tv_nsec = ;
    kevent(kq, kev, , NULL, , &ts);

    for ( ; ; ) {
        nev = kevent(kq, NULL, , kev, , NULL);

        for (i = ; i < nev; i++) {
            if (kev[i].ident == sockfd) {    /* socket is readable */
                if ( (n = read(sockfd, buf, MAXLINE)) == ) {
                    if (stdineof == )
                        return;              /* normal termination */
                    else
                        err_quit("str_cli: server terminated prematurely");
                }

                write(fileno(stdout), buf, n);
            }

            if (kev[i].ident == fileno(fp)) {  　　/* input is readable */
                n = read(fileno(fp), buf, MAXLINE);
                if (n > )
                    writen(sockfd, buf, n);

                if (n ==  || (isfile && n == kev[i].data)) {
                    stdineof = ;
                    shutdown(sockfd, SHUT_WR);    /* send FIN */
                    kev[i].flags = EV_DELETE;
                    kevent(kq, &kev[i], , NULL, , &ts);    /* remove kevent */
                    continue;
                }
            }
        }
    }
}