int compat_ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen) { int err; if (optname == MCAST_MSFILTER) return compat_mc_getsockopt(sk, level, optname, optval, optlen, ip_getsockopt); err = do_ip_getsockopt(sk, level, optname, optval, optlen, MSG_CMSG_COMPAT); #ifdef CONFIG_NETFILTER /* we need to exclude all possible ENOPROTOOPTs except default case */ if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS && !ip_mroute_opt(optname)) { int len; if (get_user(len, optlen)) return -EFAULT; lock_sock(sk); err = compat_nf_getsockopt(sk, PF_INET, optname, optval, &len); release_sock(sk); if (err >= 0) err = put_user(len, optlen); return err; } #endif return err; }
int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen) { int err; err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0); #ifdef CONFIG_BPFILTER if (optname >= BPFILTER_IPT_SO_GET_INFO && optname < BPFILTER_IPT_GET_MAX) err = bpfilter_ip_get_sockopt(sk, optname, optval, optlen); #endif #ifdef CONFIG_NETFILTER /* we need to exclude all possible ENOPROTOOPTs except default case */ if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS && !ip_mroute_opt(optname)) { int len; if (get_user(len, optlen)) return -EFAULT; err = nf_getsockopt(sk, PF_INET, optname, optval, &len); if (err >= 0) err = put_user(len, optlen); return err; } #endif return err; }