ubc_copyfrombuf
error = ubc_copyfrombuf(uobj, &uio, &ksyms_hdr, sizeof(ksyms_hdr));
error = ubc_copyfrombuf(uobj, &uio, st->sd_symstart,
error = ubc_copyfrombuf(uobj, &uio, st->sd_strstart,
error = ubc_copyfrombuf(uobj, &uio, st->sd_ctfstart,