+ io_timeout = secs;
+
+ if (!io_timeout || io_timeout > SELECT_TIMEOUT)
+ select_timeout = SELECT_TIMEOUT;
+ else
+ select_timeout = io_timeout;
+
+ allowed_lull = read_batch ? 0 : (io_timeout + 1) / 2;
+}
+
+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 using \"--old-d\" if remote rsync is <= 2.6.3 ***\n");
+ }
+}
+
+/* This is used by the generator to limit how many file transfers can
+ * be active at once when --remove-source-files is specified. Without
+ * this, sender-side deletions were mostly happening at the end. */
+void increment_active_files(int ndx, int itemizing, enum logcode code)
+{
+ while (1) {
+ /* TODO: tune these limits? */
+ int limit = active_bytecnt >= 128*1024 ? 10 : 50;
+ if (active_filecnt < limit)
+ break;
+ check_for_finished_files(itemizing, code, 0);
+ if (active_filecnt < limit)
+ break;
+ wait_for_receiver();
+ }
+
+ active_filecnt++;
+ active_bytecnt += F_LENGTH(cur_flist->files[ndx - cur_flist->ndx_start]);
+}
+
+int get_redo_num(void)
+{
+ return flist_ndx_pop(&redo_list);
+}
+
+int get_hlink_num(void)
+{
+ return flist_ndx_pop(&hlink_list);
+}
+
+/* When we're the receiver and we have a local --files-from list of names
+ * that needs to be sent over the socket to the sender, we have to do two
+ * things at the same time: send the sender a list of what files we're
+ * processing and read the incoming file+info list from the sender. We do
+ * this by making recv_file_list() call forward_filesfrom_data(), which
+ * will ensure that we forward data to the sender until we get some data
+ * for recv_file_list() to use. */
+void start_filesfrom_forwarding(int fd)
+{
+ if (protocol_version < 31 && OUT_MULTIPLEXED) {
+ /* Older protocols send the files-from data w/o packaging
+ * it in multiplexed I/O packets, so temporarily switch
+ * to buffered I/O to match this behavior. */
+ iobuf.msg.pos = iobuf.msg.len = 0; /* Be extra sure no messages go out. */
+ ff_reenable_multiplex = io_end_multiplex_out(MPLX_TO_BUFFERED);
+ }
+ ff_forward_fd = fd;
+
+ alloc_xbuf(&ff_xb, FILESFROM_BUFLEN);
+}
+
+/* Read a line into the "buf" buffer. */
+int read_line(int fd, char *buf, size_t bufsiz, int flags)
+{
+ char ch, *s, *eob;
+
+#ifdef ICONV_OPTION
+ if (flags & RL_CONVERT && iconv_buf.size < bufsiz)
+ realloc_xbuf(&iconv_buf, bufsiz + 1024);
+#endif