+static void msg_flush(void)
+{
+ if (am_generator) {
+ while (msg_queue.head && io_multiplexing_out) {
+ struct msg_list_item *m = msg_queue.head;
+ int len = IVAL(m->buf, 0) & 0xFFFFFF;
+ int tag = *((uchar*)m->buf+3) - MPLEX_BASE;
+ if (!(msg_queue.head = m->next))
+ msg_queue.tail = NULL;
+ stats.total_written += len + 4;
+ defer_forwarding_messages++;
+ mplex_write(sock_f_out, tag, m->buf + 4, len, m->convert);
+ defer_forwarding_messages--;
+ free(m);
+ }
+ } else {
+ while (msg_queue.head) {
+ struct msg_list_item *m = msg_queue.head;
+ int len = IVAL(m->buf, 0) & 0xFFFFFF;
+ int tag = *((uchar*)m->buf+3) - MPLEX_BASE;
+ if (!(msg_queue.head = m->next))
+ msg_queue.tail = NULL;
+ defer_forwarding_messages++;
+ mplex_write(msg_fd_out, tag, m->buf + 4, len, m->convert);
+ defer_forwarding_messages--;
+ free(m);
+ }
+ }
+}
+
+static void check_for_d_option_error(const char *msg)
+{
+ static char rsync263_opts[] = "BCDHIKLPRSTWabceghlnopqrtuvxz";
+ char *colon;
+ int saw_d = 0;
+
+ if (*msg != 'r'
+ || strncmp(msg, REMOTE_OPTION_ERROR, sizeof REMOTE_OPTION_ERROR - 1) != 0)
+ return;
+
+ msg += sizeof REMOTE_OPTION_ERROR - 1;
+ if (*msg == '-' || (colon = strchr(msg, ':')) == NULL
+ || strncmp(colon, REMOTE_OPTION_ERROR2, sizeof REMOTE_OPTION_ERROR2 - 1) != 0)
+ return;
+
+ for ( ; *msg != ':'; msg++) {
+ if (*msg == 'd')
+ saw_d = 1;
+ else if (*msg == 'e')
+ break;
+ else if (strchr(rsync263_opts, *msg) == NULL)
+ return;
+ }
+
+ if (saw_d) {
+ rprintf(FWARNING,
+ "*** Try adding \"-r --exclude='/*/*'\" "
+ "if remote rsync is <= 2.6.3 ***\n");
+ }
+}
+