OPT_BLKSIZE
options[OPT_BLKSIZE].o_type, 0, opt_blksize, 0);
if (i == OPT_BLKSIZE) {
if (options[OPT_BLKSIZE].o_request) {
options[OPT_BLKSIZE].o_request,
options[OPT_BLKSIZE].o_reply = client->segment_size;