- t->ret = -E_DCCP_RECV_EOF;
- if (rn->output_eof && *rn->output_eof)
- goto out;
- t->ret = 1;
- if (!s->select_ret || !FD_ISSET(pdd->fd, &s->rfds))
- goto out; /* nothing to do */
- t->ret = -E_DCCP_OVERRUN;
- if (rn->loaded >= DCCP_BUFSIZE)
- goto out;
- t->ret = recv_bin_buffer(pdd->fd, rn->buf + rn->loaded,
- DCCP_BUFSIZE - rn->loaded);
- if (t->ret <= 0) {
- if (!t->ret)
- t->ret = -E_DCCP_RECV_EOF;
- goto out;
+ ret = btr_node_status(btrn, 0, BTR_NT_ROOT);
+ if (ret < 0)
+ goto err;
+ if (ret == 0)
+ return;
+ if (!FD_ISSET(pdd->fd, &s->rfds))
+ return; /* nothing to do */
+ iovcnt = btr_pool_get_buffers(pdd->btrp, iov);
+ ret = -E_DCCP_OVERRUN;
+ if (iovcnt == 0)
+ goto err;
+ ret = para_readv(pdd->fd, iov, iovcnt);
+ /* EAGAIN is possible even if FD_ISSET */
+ if (ret < 0 && is_errno(-ret, EAGAIN))
+ return;
+ if (ret == 0)
+ ret = -E_RECV_EOF;
+ if (ret < 0)
+ goto err;
+ if (ret <= iov[0].iov_len) /* only the first buffer was filled */
+ btr_add_output_pool(pdd->btrp, ret, btrn);
+ else { /* both buffers contain data */
+ btr_add_output_pool(pdd->btrp, iov[0].iov_len, btrn);
+ btr_add_output_pool(pdd->btrp, ret - iov[0].iov_len, btrn);