LFCNREWRITESEGS
if ((r = kops.ko_fcntl(fs->clfs_ifilefd, LFCNREWRITESEGS, &lsa)) < 0) {
if ((r = kops.ko_fcntl(fs->clfs_ifilefd, LFCNREWRITESEGS, &sna)) < 0) {
case LFCNREWRITESEGS:
if (rump_sys_fcntl(fd, LFCNREWRITESEGS, &sna) < 0)