- ret = 0;
- switch (convert) {
- case COMPAT_TO_USER:
- pst = target;
- memcpy(&compat_st.target, &pst->target,
- sizeof(compat_st.target));
- compat_st.verdict = pst->verdict;
- if (compat_st.verdict > 0)
- compat_st.verdict -=
- compat_calc_jump(compat_st.verdict);
- compat_st.target.u.user.target_size = IPT_ST_COMPAT_LEN;
- if (copy_to_user(*dstptr, &compat_st, IPT_ST_COMPAT_LEN))
- ret = -EFAULT;
- *size -= IPT_ST_OFFSET;
- *dstptr += IPT_ST_COMPAT_LEN;
- break;
- case COMPAT_FROM_USER:
- pcompat_st = target;
- memcpy(&st.target, &pcompat_st->target, IPT_ST_COMPAT_LEN);
- st.verdict = pcompat_st->verdict;
- if (st.verdict > 0)
- st.verdict += compat_calc_jump(st.verdict);
- st.target.u.user.target_size = IPT_ST_LEN;
- memcpy(*dstptr, &st, IPT_ST_LEN);
- *size += IPT_ST_OFFSET;
- *dstptr += IPT_ST_LEN;
- break;
- case COMPAT_CALC_SIZE:
- *size += IPT_ST_OFFSET;
- break;
- default:
- ret = -ENOPROTOOPT;
- break;
- }
- return ret;
+ if (cv > 0)
+ cv -= compat_calc_jump(cv);
+ return copy_to_user(dst, &cv, sizeof(cv)) ? -EFAULT : 0;