Function ff_hook_epoll_ctl

adapter/syscall/ff_hook_syscall.c:1949–2013

}

int
ff_hook_epoll_ctl(int epfd, int op, int fd,
    struct epoll_event *event)
{
    int ff_epfd;

    DEBUG_LOG("ff_hook_epoll_ctl, epfd:%d, op:%d, fd:%d\n", epfd, op, fd);

#ifdef FF_KERNEL_EVENT
    if (unlikely(!is_fstack_fd(fd))) {
        if (is_fstack_fd(epfd)) {
            ff_epfd = restore_fstack_fd(epfd);
            if (likely(fstack_kernel_fd_map[ff_epfd] > 0)) {
                epfd = fstack_kernel_fd_map[ff_epfd];
                DEBUG_LOG("ff_epfd:%d, kernel epfd:%d\n", ff_epfd, epfd);
            } else {
                ERR_LOG("invalid fd and ff_epfd:%d, epfd:%d, op:%d, fd:%d\n", ff_epfd, epfd, op, fd);
                errno = EBADF;
                return -1;
            }
        }
        return ff_linux_epoll_ctl(epfd, op, fd, event);
    }
    fd = restore_fstack_fd(fd);
#else
    CHECK_FD_OWNERSHIP(epoll_ctl, (epfd, op, fd, event));
#endif
    ff_epfd = restore_fstack_fd(epfd);

    DEFINE_REQ_ARGS_STATIC(epoll_ctl);
    static __thread struct epoll_event *sh_event = NULL;

    if ((!event && op != EPOLL_CTL_DEL) ||
        (op != EPOLL_CTL_ADD &&
         op != EPOLL_CTL_MOD &&
         op != EPOLL_CTL_DEL)) {
        errno = EINVAL;
        return -1;
    }

    if (event) {
        if (sh_event == NULL) {
            sh_event = share_mem_alloc(sizeof(struct epoll_event));
            if (sh_event == NULL) {
                RETURN_ERROR_NOFREE(ENOMEM);
            }
        }
        rte_memcpy(sh_event, event, sizeof(struct epoll_event));
        args->event = sh_event;
    } else {
        args->event = NULL;
    }

    args->epfd = ff_epfd;
    args->op = op;
    args->fd = fd;

    SYSCALL(FF_SO_EPOLL_CTL, args);