- if (s) {
- size_t i;
-
- /* tell the other guy how many we are going to be
- doing and how many bytes there are in the last
- chunk */
- write_int(f_out, s->count);
- write_int(f_out, s->n);
- write_int(f_out, s->remainder);
-
- for (i = 0; i < s->count; i++) {
- write_int(f_out, s->sums[i].sum1);
- write_buf(f_out, s->sums[i].sum2, csum_length);
- }
- } else {
- /* we don't have checksums */
- write_int(f_out, 0);
- write_int(f_out, block_size);
- write_int(f_out, 0);
- }
+ static struct sum_struct null_sum;
+
+ if (sum == (struct sum_struct *)NULL)
+ sum = &null_sum;
+
+ write_int(f, sum->count);
+ write_int(f, sum->blength);
+ if (remote_version >= 27)
+ write_int(f, sum->s2length);
+ write_int(f, sum->remainder);