+ msg_fd_in = fd;
+}
+
+/* Try to push messages off the list onto the wire. If we leave with more
+ * to do, return 0. On error, return -1. If everything flushed, return 1.
+ * This is only called by the receiver. */
+int msg_list_push(int flush_it_all)
+{
+ static int written = 0;
+ struct timeval tv;
+ fd_set fds;
+
+ if (msg_fd_out < 0)
+ return -1;
+
+ while (msg_list_head) {
+ struct msg_list *ml = msg_list_head;
+ int n = write(msg_fd_out, ml->buf + written, ml->len - written);
+ if (n < 0) {
+ if (errno == EINTR)
+ continue;
+ if (errno != EWOULDBLOCK && errno != EAGAIN)
+ return -1;
+ if (!flush_it_all)
+ return 0;
+ FD_ZERO(&fds);
+ FD_SET(msg_fd_out, &fds);
+ tv.tv_sec = io_timeout ? io_timeout : SELECT_TIMEOUT;
+ tv.tv_usec = 0;
+ if (!select(msg_fd_out+1, NULL, &fds, NULL, &tv))
+ check_timeout();
+ } else if ((written += n) == ml->len) {
+ free(ml->buf);
+ msg_list_head = ml->next;
+ if (!msg_list_head)
+ msg_list_tail = NULL;
+ free(ml);
+ written = 0;
+ }
+ }
+ return 1;
+}
+
+int get_redo_num(void)
+{
+ struct redo_list *next;
+ int num;
+
+ while (!redo_list_head)
+ read_msg_fd();
+
+ num = redo_list_head->num;
+ next = redo_list_head->next;
+ free(redo_list_head);
+ redo_list_head = next;
+ if (!next)
+ redo_list_tail = NULL;
+
+ return num;