return false;
}
+static int copy_group_source_from_sockptr(struct group_source_req *greqs,
+ sockptr_t optval, int optlen)
+{
+ if (in_compat_syscall()) {
+ struct compat_group_source_req gr32;
+
+ if (optlen < sizeof(gr32))
+ return -EINVAL;
+ if (copy_from_sockptr(&gr32, optval, sizeof(gr32)))
+ return -EFAULT;
+ greqs->gsr_interface = gr32.gsr_interface;
+ greqs->gsr_group = gr32.gsr_group;
+ greqs->gsr_source = gr32.gsr_source;
+ } else {
+ if (optlen < sizeof(*greqs))
+ return -EINVAL;
+ if (copy_from_sockptr(greqs, optval, sizeof(*greqs)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
static int do_ipv6_mcast_group_source(struct sock *sk, int optname,
- struct group_source_req *greqs)
+ sockptr_t optval, int optlen)
{
+ struct group_source_req greqs;
int omode, add;
+ int ret;
+
+ ret = copy_group_source_from_sockptr(&greqs, optval, optlen);
+ if (ret)
+ return ret;
- if (greqs->gsr_group.ss_family != AF_INET6 ||
- greqs->gsr_source.ss_family != AF_INET6)
+ if (greqs.gsr_group.ss_family != AF_INET6 ||
+ greqs.gsr_source.ss_family != AF_INET6)
return -EADDRNOTAVAIL;
if (optname == MCAST_BLOCK_SOURCE) {
struct sockaddr_in6 *psin6;
int retv;
- psin6 = (struct sockaddr_in6 *)&greqs->gsr_group;
- retv = ipv6_sock_mc_join_ssm(sk, greqs->gsr_interface,
+ psin6 = (struct sockaddr_in6 *)&greqs.gsr_group;
+ retv = ipv6_sock_mc_join_ssm(sk, greqs.gsr_interface,
&psin6->sin6_addr,
MCAST_INCLUDE);
/* prior join w/ different source is ok */
omode = MCAST_INCLUDE;
add = 0;
}
- return ip6_mc_source(add, omode, sk, greqs);
+ return ip6_mc_source(add, omode, sk, &greqs);
+}
+
+static int ipv6_set_mcast_msfilter(struct sock *sk, sockptr_t optval,
+ int optlen)
+{
+ struct group_filter *gsf;
+ int ret;
+
+ if (optlen < GROUP_FILTER_SIZE(0))
+ return -EINVAL;
+ if (optlen > sysctl_optmem_max)
+ return -ENOBUFS;
+
+ gsf = memdup_sockptr(optval, optlen);
+ if (IS_ERR(gsf))
+ return PTR_ERR(gsf);
+
+ /* numsrc >= (4G-140)/128 overflow in 32 bits */
+ ret = -ENOBUFS;
+ if (gsf->gf_numsrc >= 0x1ffffffU ||
+ gsf->gf_numsrc > sysctl_mld_max_msf)
+ goto out_free_gsf;
+
+ ret = -EINVAL;
+ if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen)
+ goto out_free_gsf;
+
+ ret = ip6_mc_msfilter(sk, gsf, gsf->gf_slist);
+out_free_gsf:
+ kfree(gsf);
+ return ret;
+}
+
+static int compat_ipv6_set_mcast_msfilter(struct sock *sk, sockptr_t optval,
+ int optlen)
+{
+ const int size0 = offsetof(struct compat_group_filter, gf_slist);
+ struct compat_group_filter *gf32;
+ void *p;
+ int ret;
+ int n;
+
+ if (optlen < size0)
+ return -EINVAL;
+ if (optlen > sysctl_optmem_max - 4)
+ return -ENOBUFS;
+
+ p = kmalloc(optlen + 4, GFP_KERNEL);
+ if (!p)
+ return -ENOMEM;
+
+ gf32 = p + 4; /* we want ->gf_group and ->gf_slist aligned */
+ ret = -EFAULT;
+ if (copy_from_sockptr(gf32, optval, optlen))
+ goto out_free_p;
+
+ /* numsrc >= (4G-140)/128 overflow in 32 bits */
+ ret = -ENOBUFS;
+ n = gf32->gf_numsrc;
+ if (n >= 0x1ffffffU || n > sysctl_mld_max_msf)
+ goto out_free_p;
+
+ ret = -EINVAL;
+ if (offsetof(struct compat_group_filter, gf_slist[n]) > optlen)
+ goto out_free_p;
+
+ ret = ip6_mc_msfilter(sk, &(struct group_filter){
+ .gf_interface = gf32->gf_interface,
+ .gf_group = gf32->gf_group,
+ .gf_fmode = gf32->gf_fmode,
+ .gf_numsrc = gf32->gf_numsrc}, gf32->gf_slist);
+
+out_free_p:
+ kfree(p);
+ return ret;
+}
+
+static int ipv6_mcast_join_leave(struct sock *sk, int optname,
+ sockptr_t optval, int optlen)
+{
+ struct sockaddr_in6 *psin6;
+ struct group_req greq;
+
+ if (optlen < sizeof(greq))
+ return -EINVAL;
+ if (copy_from_sockptr(&greq, optval, sizeof(greq)))
+ return -EFAULT;
+
+ if (greq.gr_group.ss_family != AF_INET6)
+ return -EADDRNOTAVAIL;
+ psin6 = (struct sockaddr_in6 *)&greq.gr_group;
+ if (optname == MCAST_JOIN_GROUP)
+ return ipv6_sock_mc_join(sk, greq.gr_interface,
+ &psin6->sin6_addr);
+ return ipv6_sock_mc_drop(sk, greq.gr_interface, &psin6->sin6_addr);
+}
+
+static int compat_ipv6_mcast_join_leave(struct sock *sk, int optname,
+ sockptr_t optval, int optlen)
+{
+ struct compat_group_req gr32;
+ struct sockaddr_in6 *psin6;
+
+ if (optlen < sizeof(gr32))
+ return -EINVAL;
+ if (copy_from_sockptr(&gr32, optval, sizeof(gr32)))
+ return -EFAULT;
+
+ if (gr32.gr_group.ss_family != AF_INET6)
+ return -EADDRNOTAVAIL;
+ psin6 = (struct sockaddr_in6 *)&gr32.gr_group;
+ if (optname == MCAST_JOIN_GROUP)
+ return ipv6_sock_mc_join(sk, gr32.gr_interface,
+ &psin6->sin6_addr);
+ return ipv6_sock_mc_drop(sk, gr32.gr_interface, &psin6->sin6_addr);
+}
+
+static int ipv6_set_opt_hdr(struct sock *sk, int optname, sockptr_t optval,
+ int optlen)
+{
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct ipv6_opt_hdr *new = NULL;
+ struct net *net = sock_net(sk);
+ struct ipv6_txoptions *opt;
+ int err;
+
+ /* hop-by-hop / destination options are privileged option */
+ if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW))
+ return -EPERM;
+
+ /* remove any sticky options header with a zero option
+ * length, per RFC3542.
+ */
+ if (optlen > 0) {
+ if (sockptr_is_null(optval))
+ return -EINVAL;
+ if (optlen < sizeof(struct ipv6_opt_hdr) ||
+ optlen & 0x7 ||
+ optlen > 8 * 255)
+ return -EINVAL;
+
+ new = memdup_sockptr(optval, optlen);
+ if (IS_ERR(new))
+ return PTR_ERR(new);
+ if (unlikely(ipv6_optlen(new) > optlen)) {
+ kfree(new);
+ return -EINVAL;
+ }
+ }
+
+ opt = rcu_dereference_protected(np->opt, lockdep_sock_is_held(sk));
+ opt = ipv6_renew_options(sk, opt, optname, new);
+ kfree(new);
+ if (IS_ERR(opt))
+ return PTR_ERR(opt);
+
+ /* routing header option needs extra check */
+ err = -EINVAL;
+ if (optname == IPV6_RTHDR && opt && opt->srcrt) {
+ struct ipv6_rt_hdr *rthdr = opt->srcrt;
+ switch (rthdr->type) {
+#if IS_ENABLED(CONFIG_IPV6_MIP6)
+ case IPV6_SRCRT_TYPE_2:
+ if (rthdr->hdrlen != 2 || rthdr->segments_left != 1)
+ goto sticky_done;
+ break;
+#endif
+ case IPV6_SRCRT_TYPE_4:
+ {
+ struct ipv6_sr_hdr *srh =
+ (struct ipv6_sr_hdr *)opt->srcrt;
+
+ if (!seg6_validate_srh(srh, optlen, false))
+ goto sticky_done;
+ break;
+ }
+ default:
+ goto sticky_done;
+ }
+ }
+
+ err = 0;
+ opt = ipv6_update_options(sk, opt);
+sticky_done:
+ if (opt) {
+ atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
+ txopt_put(opt);
+ }
+ return err;
}
static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
- char __user *optval, unsigned int optlen)
+ sockptr_t optval, unsigned int optlen)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net *net = sock_net(sk);
int retv = -ENOPROTOOPT;
bool needs_rtnl = setsockopt_needs_rtnl(optname);
- if (!optval)
+ if (sockptr_is_null(optval))
val = 0;
else {
if (optlen >= sizeof(int)) {
- if (get_user(val, (int __user *) optval))
+ if (copy_from_sockptr(&val, optval, sizeof(val)))
return -EFAULT;
} else
val = 0;
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
case IPV6_DSTOPTS:
- {
- struct ipv6_txoptions *opt;
- struct ipv6_opt_hdr *new = NULL;
-
- /* hop-by-hop / destination options are privileged option */
- retv = -EPERM;
- if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW))
- break;
-
- /* remove any sticky options header with a zero option
- * length, per RFC3542.
- */
- if (optlen == 0)
- optval = NULL;
- else if (!optval)
- goto e_inval;
- else if (optlen < sizeof(struct ipv6_opt_hdr) ||
- optlen & 0x7 || optlen > 8 * 255)
- goto e_inval;
- else {
- new = memdup_user(optval, optlen);
- if (IS_ERR(new)) {
- retv = PTR_ERR(new);
- break;
- }
- if (unlikely(ipv6_optlen(new) > optlen)) {
- kfree(new);
- goto e_inval;
- }
- }
-
- opt = rcu_dereference_protected(np->opt,
- lockdep_sock_is_held(sk));
- opt = ipv6_renew_options(sk, opt, optname, new);
- kfree(new);
- if (IS_ERR(opt)) {
- retv = PTR_ERR(opt);
- break;
- }
-
- /* routing header option needs extra check */
- retv = -EINVAL;
- if (optname == IPV6_RTHDR && opt && opt->srcrt) {
- struct ipv6_rt_hdr *rthdr = opt->srcrt;
- switch (rthdr->type) {
-#if IS_ENABLED(CONFIG_IPV6_MIP6)
- case IPV6_SRCRT_TYPE_2:
- if (rthdr->hdrlen != 2 ||
- rthdr->segments_left != 1)
- goto sticky_done;
-
- break;
-#endif
- case IPV6_SRCRT_TYPE_4:
- {
- struct ipv6_sr_hdr *srh = (struct ipv6_sr_hdr *)
- opt->srcrt;
-
- if (!seg6_validate_srh(srh, optlen, false))
- goto sticky_done;
- break;
- }
- default:
- goto sticky_done;
- }
- }
-
- retv = 0;
- opt = ipv6_update_options(sk, opt);
-sticky_done:
- if (opt) {
- atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
- txopt_put(opt);
- }
+ retv = ipv6_set_opt_hdr(sk, optname, optval, optlen);
break;
- }
case IPV6_PKTINFO:
{
if (optlen == 0)
goto e_inval;
- else if (optlen < sizeof(struct in6_pktinfo) || !optval)
+ else if (optlen < sizeof(struct in6_pktinfo) ||
+ sockptr_is_null(optval))
goto e_inval;
- if (copy_from_user(&pkt, optval, sizeof(struct in6_pktinfo))) {
- retv = -EFAULT;
- break;
+ if (copy_from_sockptr(&pkt, optval, sizeof(pkt))) {
+ retv = -EFAULT;
+ break;
}
if (!sk_dev_equal_l3scope(sk, pkt.ipi6_ifindex))
goto e_inval;
refcount_set(&opt->refcnt, 1);
opt->tot_len = sizeof(*opt) + optlen;
retv = -EFAULT;
- if (copy_from_user(opt+1, optval, optlen))
+ if (copy_from_sockptr(opt + 1, optval, optlen))
goto done;
msg.msg_controllen = optlen;
break;
retv = -EFAULT;
- if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
+ if (copy_from_sockptr(&mreq, optval, sizeof(struct ipv6_mreq)))
break;
if (optname == IPV6_ADD_MEMBERSHIP)
goto e_inval;
retv = -EFAULT;
- if (copy_from_user(&mreq, optval, sizeof(struct ipv6_mreq)))
+ if (copy_from_sockptr(&mreq, optval, sizeof(struct ipv6_mreq)))
break;
if (optname == IPV6_JOIN_ANYCAST)
case MCAST_JOIN_GROUP:
case MCAST_LEAVE_GROUP:
- {
- struct group_req greq;
- struct sockaddr_in6 *psin6;
-
- if (optlen < sizeof(struct group_req))
- goto e_inval;
-
- retv = -EFAULT;
- if (copy_from_user(&greq, optval, sizeof(struct group_req)))
- break;
- if (greq.gr_group.ss_family != AF_INET6) {
- retv = -EADDRNOTAVAIL;
- break;
- }
- psin6 = (struct sockaddr_in6 *)&greq.gr_group;
- if (optname == MCAST_JOIN_GROUP)
- retv = ipv6_sock_mc_join(sk, greq.gr_interface,
- &psin6->sin6_addr);
+ if (in_compat_syscall())
+ retv = compat_ipv6_mcast_join_leave(sk, optname, optval,
+ optlen);
else
- retv = ipv6_sock_mc_drop(sk, greq.gr_interface,
- &psin6->sin6_addr);
+ retv = ipv6_mcast_join_leave(sk, optname, optval,
+ optlen);
break;
- }
case MCAST_JOIN_SOURCE_GROUP:
case MCAST_LEAVE_SOURCE_GROUP:
case MCAST_BLOCK_SOURCE:
case MCAST_UNBLOCK_SOURCE:
- {
- struct group_source_req greqs;
-
- if (optlen < sizeof(struct group_source_req))
- goto e_inval;
- if (copy_from_user(&greqs, optval, sizeof(greqs))) {
- retv = -EFAULT;
- break;
- }
- retv = do_ipv6_mcast_group_source(sk, optname, &greqs);
+ retv = do_ipv6_mcast_group_source(sk, optname, optval, optlen);
break;
- }
case MCAST_MSFILTER:
- {
- struct group_filter *gsf;
-
- if (optlen < GROUP_FILTER_SIZE(0))
- goto e_inval;
- if (optlen > sysctl_optmem_max) {
- retv = -ENOBUFS;
- break;
- }
- gsf = memdup_user(optval, optlen);
- if (IS_ERR(gsf)) {
- retv = PTR_ERR(gsf);
- break;
- }
- /* numsrc >= (4G-140)/128 overflow in 32 bits */
- if (gsf->gf_numsrc >= 0x1ffffffU ||
- gsf->gf_numsrc > sysctl_mld_max_msf) {
- kfree(gsf);
- retv = -ENOBUFS;
- break;
- }
- if (GROUP_FILTER_SIZE(gsf->gf_numsrc) > optlen) {
- kfree(gsf);
- retv = -EINVAL;
- break;
- }
- retv = ip6_mc_msfilter(sk, gsf, gsf->gf_slist);
- kfree(gsf);
-
+ if (in_compat_syscall())
+ retv = compat_ipv6_set_mcast_msfilter(sk, optval,
+ optlen);
+ else
+ retv = ipv6_set_mcast_msfilter(sk, optval, optlen);
break;
- }
case IPV6_ROUTER_ALERT:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.recvfragsize = valbool;
retv = 0;
break;
+ case IPV6_RECVERR_RFC4884:
+ if (optlen < sizeof(int))
+ goto e_inval;
+ if (val < 0 || val > 1)
+ goto e_inval;
+ np->recverr_rfc4884 = valbool;
+ retv = 0;
+ break;
}
release_sock(sk);
return -EINVAL;
}
-int ipv6_setsockopt(struct sock *sk, int level, int optname,
- char __user *optval, unsigned int optlen)
+int ipv6_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval,
+ unsigned int optlen)
{
int err;
}
EXPORT_SYMBOL(ipv6_setsockopt);
-#ifdef CONFIG_COMPAT
-int compat_ipv6_setsockopt(struct sock *sk, int level, int optname,
- char __user *optval, unsigned int optlen)
-{
- int err;
-
- if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
- if (udp_prot.compat_setsockopt != NULL)
- return udp_prot.compat_setsockopt(sk, level, optname,
- optval, optlen);
- return udp_prot.setsockopt(sk, level, optname, optval, optlen);
- }
-
- if (level != SOL_IPV6)
- return -ENOPROTOOPT;
-
- switch (optname) {
- case MCAST_JOIN_GROUP:
- case MCAST_LEAVE_GROUP:
- {
- struct compat_group_req __user *gr32 = (void __user *)optval;
- struct group_req greq;
- struct sockaddr_in6 *psin6 = (struct sockaddr_in6 *)&greq.gr_group;
-
- if (optlen < sizeof(struct compat_group_req))
- return -EINVAL;
-
- if (get_user(greq.gr_interface, &gr32->gr_interface) ||
- copy_from_user(&greq.gr_group, &gr32->gr_group,
- sizeof(greq.gr_group)))
- return -EFAULT;
-
- if (greq.gr_group.ss_family != AF_INET6)
- return -EADDRNOTAVAIL;
-
- rtnl_lock();
- lock_sock(sk);
- if (optname == MCAST_JOIN_GROUP)
- err = ipv6_sock_mc_join(sk, greq.gr_interface,
- &psin6->sin6_addr);
- else
- err = ipv6_sock_mc_drop(sk, greq.gr_interface,
- &psin6->sin6_addr);
- release_sock(sk);
- rtnl_unlock();
- return err;
- }
- case MCAST_JOIN_SOURCE_GROUP:
- case MCAST_LEAVE_SOURCE_GROUP:
- case MCAST_BLOCK_SOURCE:
- case MCAST_UNBLOCK_SOURCE:
- {
- struct compat_group_source_req __user *gsr32 = (void __user *)optval;
- struct group_source_req greqs;
-
- if (optlen < sizeof(struct compat_group_source_req))
- return -EINVAL;
-
- if (get_user(greqs.gsr_interface, &gsr32->gsr_interface) ||
- copy_from_user(&greqs.gsr_group, &gsr32->gsr_group,
- sizeof(greqs.gsr_group)) ||
- copy_from_user(&greqs.gsr_source, &gsr32->gsr_source,
- sizeof(greqs.gsr_source)))
- return -EFAULT;
-
- rtnl_lock();
- lock_sock(sk);
- err = do_ipv6_mcast_group_source(sk, optname, &greqs);
- release_sock(sk);
- rtnl_unlock();
- return err;
- }
- case MCAST_MSFILTER:
- {
- const int size0 = offsetof(struct compat_group_filter, gf_slist);
- struct compat_group_filter *gf32;
- void *p;
- int n;
-
- if (optlen < size0)
- return -EINVAL;
- if (optlen > sysctl_optmem_max - 4)
- return -ENOBUFS;
-
- p = kmalloc(optlen + 4, GFP_KERNEL);
- if (!p)
- return -ENOMEM;
-
- gf32 = p + 4; /* we want ->gf_group and ->gf_slist aligned */
- if (copy_from_user(gf32, optval, optlen)) {
- err = -EFAULT;
- goto mc_msf_out;
- }
-
- n = gf32->gf_numsrc;
- /* numsrc >= (4G-140)/128 overflow in 32 bits */
- if (n >= 0x1ffffffU ||
- n > sysctl_mld_max_msf) {
- err = -ENOBUFS;
- goto mc_msf_out;
- }
- if (offsetof(struct compat_group_filter, gf_slist[n]) > optlen) {
- err = -EINVAL;
- goto mc_msf_out;
- }
-
- rtnl_lock();
- lock_sock(sk);
- err = ip6_mc_msfilter(sk, &(struct group_filter){
- .gf_interface = gf32->gf_interface,
- .gf_group = gf32->gf_group,
- .gf_fmode = gf32->gf_fmode,
- .gf_numsrc = gf32->gf_numsrc}, gf32->gf_slist);
- release_sock(sk);
- rtnl_unlock();
-mc_msf_out:
- kfree(p);
- return err;
- }
- }
-
- err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
-#ifdef CONFIG_NETFILTER
- /* we need to exclude all possible ENOPROTOOPTs except default case */
- if (err == -ENOPROTOOPT && optname != IPV6_IPSEC_POLICY &&
- optname != IPV6_XFRM_POLICY)
- err = compat_nf_setsockopt(sk, PF_INET6, optname, optval,
- optlen);
-#endif
- return err;
-}
-EXPORT_SYMBOL(compat_ipv6_setsockopt);
-#endif
-
static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_txoptions *opt,
int optname, char __user *optval, int len)
{
return len;
}
+static int ipv6_get_msfilter(struct sock *sk, void __user *optval,
+ int __user *optlen, int len)
+{
+ const int size0 = offsetof(struct group_filter, gf_slist);
+ struct group_filter __user *p = optval;
+ struct group_filter gsf;
+ int num;
+ int err;
+
+ if (len < size0)
+ return -EINVAL;
+ if (copy_from_user(&gsf, p, size0))
+ return -EFAULT;
+ if (gsf.gf_group.ss_family != AF_INET6)
+ return -EADDRNOTAVAIL;
+ num = gsf.gf_numsrc;
+ lock_sock(sk);
+ err = ip6_mc_msfget(sk, &gsf, p->gf_slist);
+ if (!err) {
+ if (num > gsf.gf_numsrc)
+ num = gsf.gf_numsrc;
+ if (put_user(GROUP_FILTER_SIZE(num), optlen) ||
+ copy_to_user(p, &gsf, size0))
+ err = -EFAULT;
+ }
+ release_sock(sk);
+ return err;
+}
+
+static int compat_ipv6_get_msfilter(struct sock *sk, void __user *optval,
+ int __user *optlen)
+{
+ const int size0 = offsetof(struct compat_group_filter, gf_slist);
+ struct compat_group_filter __user *p = optval;
+ struct compat_group_filter gf32;
+ struct group_filter gf;
+ int len, err;
+ int num;
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+ if (len < size0)
+ return -EINVAL;
+
+ if (copy_from_user(&gf32, p, size0))
+ return -EFAULT;
+ gf.gf_interface = gf32.gf_interface;
+ gf.gf_fmode = gf32.gf_fmode;
+ num = gf.gf_numsrc = gf32.gf_numsrc;
+ gf.gf_group = gf32.gf_group;
+
+ if (gf.gf_group.ss_family != AF_INET6)
+ return -EADDRNOTAVAIL;
+
+ lock_sock(sk);
+ err = ip6_mc_msfget(sk, &gf, p->gf_slist);
+ release_sock(sk);
+ if (err)
+ return err;
+ if (num > gf.gf_numsrc)
+ num = gf.gf_numsrc;
+ len = GROUP_FILTER_SIZE(num) - (sizeof(gf)-sizeof(gf32));
+ if (put_user(len, optlen) ||
+ put_user(gf.gf_fmode, &p->gf_fmode) ||
+ put_user(gf.gf_numsrc, &p->gf_numsrc))
+ return -EFAULT;
+ return 0;
+}
+
static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen, unsigned int flags)
{
val = sk->sk_family;
break;
case MCAST_MSFILTER:
- {
- struct group_filter __user *p = (void __user *)optval;
- struct group_filter gsf;
- const int size0 = offsetof(struct group_filter, gf_slist);
- int num;
- int err;
-
- if (len < size0)
- return -EINVAL;
- if (copy_from_user(&gsf, p, size0))
- return -EFAULT;
- if (gsf.gf_group.ss_family != AF_INET6)
- return -EADDRNOTAVAIL;
- num = gsf.gf_numsrc;
- lock_sock(sk);
- err = ip6_mc_msfget(sk, &gsf, p->gf_slist);
- if (!err) {
- if (num > gsf.gf_numsrc)
- num = gsf.gf_numsrc;
- if (put_user(GROUP_FILTER_SIZE(num), optlen) ||
- copy_to_user(p, &gsf, size0))
- err = -EFAULT;
- }
- release_sock(sk);
- return err;
- }
-
+ if (in_compat_syscall())
+ return compat_ipv6_get_msfilter(sk, optval, optlen);
+ return ipv6_get_msfilter(sk, optval, optlen, len);
case IPV6_2292PKTOPTIONS:
{
struct msghdr msg;
val = np->rtalert_isolate;
break;
+ case IPV6_RECVERR_RFC4884:
+ val = np->recverr_rfc4884;
+ break;
+
default:
return -ENOPROTOOPT;
}
return err;
}
EXPORT_SYMBOL(ipv6_getsockopt);
-
-#ifdef CONFIG_COMPAT
-int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
- char __user *optval, int __user *optlen)
-{
- int err;
-
- if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
- if (udp_prot.compat_getsockopt != NULL)
- return udp_prot.compat_getsockopt(sk, level, optname,
- optval, optlen);
- return udp_prot.getsockopt(sk, level, optname, optval, optlen);
- }
-
- if (level != SOL_IPV6)
- return -ENOPROTOOPT;
-
- if (optname == MCAST_MSFILTER) {
- const int size0 = offsetof(struct compat_group_filter, gf_slist);
- struct compat_group_filter __user *p = (void __user *)optval;
- struct compat_group_filter gf32;
- struct group_filter gf;
- int ulen, err;
- int num;
-
- if (get_user(ulen, optlen))
- return -EFAULT;
-
- if (ulen < size0)
- return -EINVAL;
-
- if (copy_from_user(&gf32, p, size0))
- return -EFAULT;
-
- gf.gf_interface = gf32.gf_interface;
- gf.gf_fmode = gf32.gf_fmode;
- num = gf.gf_numsrc = gf32.gf_numsrc;
- gf.gf_group = gf32.gf_group;
-
- if (gf.gf_group.ss_family != AF_INET6)
- return -EADDRNOTAVAIL;
- lock_sock(sk);
- err = ip6_mc_msfget(sk, &gf, p->gf_slist);
- release_sock(sk);
- if (err)
- return err;
- if (num > gf.gf_numsrc)
- num = gf.gf_numsrc;
- ulen = GROUP_FILTER_SIZE(num) - (sizeof(gf)-sizeof(gf32));
- if (put_user(ulen, optlen) ||
- put_user(gf.gf_fmode, &p->gf_fmode) ||
- put_user(gf.gf_numsrc, &p->gf_numsrc))
- return -EFAULT;
- return 0;
- }
-
- err = do_ipv6_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 != IPV6_2292PKTOPTIONS) {
- int len;
-
- if (get_user(len, optlen))
- return -EFAULT;
-
- err = compat_nf_getsockopt(sk, PF_INET6, optname, optval, &len);
- if (err >= 0)
- err = put_user(len, optlen);
- }
-#endif
- return err;
-}
-EXPORT_SYMBOL(compat_ipv6_getsockopt);
-#endif
projects / linux-2.6-microblaze.git / blobdiff