*
* FIXME: Make the setsockopt code POSIX compliant: That is
*
- * o Return -EINVAL for setsockopt of short lengths
* o Truncate getsockopt returns
* o Return an optlen of the truncated length if need be
*
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/in6.h>
+#include <linux/mroute6.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/init.h>
#include <net/udp.h>
#include <net/udplite.h>
#include <net/xfrm.h>
+#include <net/compat.h>
#include <asm/uaccess.h>
return 0;
}
+static
+struct ipv6_txoptions *ipv6_update_options(struct sock *sk,
+ struct ipv6_txoptions *opt)
+{
+ if (inet_sk(sk)->is_icsk) {
+ if (opt &&
+ !((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) &&
+ inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
+ struct inet_connection_sock *icsk = inet_csk(sk);
+ icsk->icsk_ext_hdr_len = opt->opt_flen + opt->opt_nflen;
+ icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
+ }
+ opt = xchg(&inet6_sk(sk)->opt, opt);
+ } else {
+ write_lock(&sk->sk_dst_lock);
+ opt = xchg(&inet6_sk(sk)->opt, opt);
+ write_unlock(&sk->sk_dst_lock);
+ }
+ sk_dst_reset(sk);
+
+ return opt;
+}
+
static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen)
{
struct ipv6_pinfo *np = inet6_sk(sk);
+ struct net *net = sock_net(sk);
int val, valbool;
int retv = -ENOPROTOOPT;
if (optval == NULL)
val=0;
- else if (get_user(val, (int __user *) optval))
- return -EFAULT;
+ else {
+ if (optlen >= sizeof(int)) {
+ if (get_user(val, (int __user *) optval))
+ return -EFAULT;
+ } else
+ val = 0;
+ }
valbool = (val!=0);
+ if (ip6_mroute_opt(optname))
+ return ip6_mroute_setsockopt(sk, optname, optval, optlen);
+
lock_sock(sk);
switch (optname) {
case IPV6_ADDRFORM:
+ if (optlen < sizeof(int))
+ goto e_inval;
if (val == PF_INET) {
struct ipv6_txoptions *opt;
struct sk_buff *pktopt;
if (sk->sk_protocol != IPPROTO_UDP &&
-#ifdef CONFIG_IP_UDPLITE
sk->sk_protocol != IPPROTO_UDPLITE &&
-#endif
sk->sk_protocol != IPPROTO_TCP)
break;
if (sk->sk_protocol == IPPROTO_TCP) {
struct inet_connection_sock *icsk = inet_csk(sk);
-
local_bh_disable();
- sock_prot_inuse_add(sk->sk_prot, -1);
- sock_prot_inuse_add(&tcp_prot, 1);
+ sock_prot_inuse_add(net, sk->sk_prot, -1);
+ sock_prot_inuse_add(net, &tcp_prot, 1);
local_bh_enable();
sk->sk_prot = &tcp_prot;
icsk->icsk_af_ops = &ipv4_specific;
} else {
struct proto *prot = &udp_prot;
- if (IS_PROTO_UDPLITE(sk->sk_protocol))
+ if (sk->sk_protocol == IPPROTO_UDPLITE)
prot = &udplite_prot;
local_bh_disable();
- sock_prot_inuse_add(sk->sk_prot, -1);
- sock_prot_inuse_add(prot, 1);
+ sock_prot_inuse_add(net, sk->sk_prot, -1);
+ sock_prot_inuse_add(net, prot, 1);
local_bh_enable();
sk->sk_prot = prot;
sk->sk_socket->ops = &inet_dgram_ops;
goto e_inval;
case IPV6_V6ONLY:
- if (inet_sk(sk)->num)
+ if (optlen < sizeof(int) ||
+ inet_sk(sk)->num)
goto e_inval;
np->ipv6only = valbool;
retv = 0;
break;
case IPV6_RECVPKTINFO:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.rxinfo = valbool;
retv = 0;
break;
case IPV6_2292PKTINFO:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.rxoinfo = valbool;
retv = 0;
break;
case IPV6_RECVHOPLIMIT:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.rxhlim = valbool;
retv = 0;
break;
case IPV6_2292HOPLIMIT:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.rxohlim = valbool;
retv = 0;
break;
case IPV6_RECVRTHDR:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.srcrt = valbool;
retv = 0;
break;
case IPV6_2292RTHDR:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.osrcrt = valbool;
retv = 0;
break;
case IPV6_RECVHOPOPTS:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.hopopts = valbool;
retv = 0;
break;
case IPV6_2292HOPOPTS:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.ohopopts = valbool;
retv = 0;
break;
case IPV6_RECVDSTOPTS:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.dstopts = valbool;
retv = 0;
break;
case IPV6_2292DSTOPTS:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.odstopts = valbool;
retv = 0;
break;
case IPV6_TCLASS:
+ if (optlen < sizeof(int))
+ goto e_inval;
if (val < -1 || val > 0xff)
goto e_inval;
np->tclass = val;
break;
case IPV6_RECVTCLASS:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.rxtclass = valbool;
retv = 0;
break;
case IPV6_FLOWINFO:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->rxopt.bits.rxflow = valbool;
retv = 0;
break;
if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW))
break;
- retv = -EINVAL;
- if (optlen & 0x7 || optlen > 8 * 255)
- break;
+ if (optlen < sizeof(struct ipv6_opt_hdr) ||
+ optlen & 0x7 || optlen > 8 * 255)
+ goto e_inval;
opt = ipv6_renew_options(sk, np->opt, optname,
(struct ipv6_opt_hdr __user *)optval,
}
retv = 0;
- if (inet_sk(sk)->is_icsk) {
- if (opt) {
- struct inet_connection_sock *icsk = inet_csk(sk);
- if (!((1 << sk->sk_state) &
- (TCPF_LISTEN | TCPF_CLOSE))
- && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
- icsk->icsk_ext_hdr_len =
- opt->opt_flen + opt->opt_nflen;
- icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
- }
- }
- opt = xchg(&np->opt, opt);
- sk_dst_reset(sk);
- } else {
- write_lock(&sk->sk_dst_lock);
- opt = xchg(&np->opt, opt);
- write_unlock(&sk->sk_dst_lock);
- sk_dst_reset(sk);
- }
+ opt = ipv6_update_options(sk, opt);
sticky_done:
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
goto done;
update:
retv = 0;
- if (inet_sk(sk)->is_icsk) {
- if (opt) {
- struct inet_connection_sock *icsk = inet_csk(sk);
- if (!((1 << sk->sk_state) &
- (TCPF_LISTEN | TCPF_CLOSE))
- && inet_sk(sk)->daddr != LOOPBACK4_IPV6) {
- icsk->icsk_ext_hdr_len =
- opt->opt_flen + opt->opt_nflen;
- icsk->icsk_sync_mss(sk, icsk->icsk_pmtu_cookie);
- }
- }
- opt = xchg(&np->opt, opt);
- sk_dst_reset(sk);
- } else {
- write_lock(&sk->sk_dst_lock);
- opt = xchg(&np->opt, opt);
- write_unlock(&sk->sk_dst_lock);
- sk_dst_reset(sk);
- }
-
+ opt = ipv6_update_options(sk, opt);
done:
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
break;
}
case IPV6_UNICAST_HOPS:
+ if (optlen < sizeof(int))
+ goto e_inval;
if (val > 255 || val < -1)
goto e_inval;
np->hop_limit = val;
case IPV6_MULTICAST_HOPS:
if (sk->sk_type == SOCK_STREAM)
goto e_inval;
+ if (optlen < sizeof(int))
+ goto e_inval;
if (val > 255 || val < -1)
goto e_inval;
np->mcast_hops = val;
break;
case IPV6_MULTICAST_LOOP:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->mc_loop = valbool;
retv = 0;
break;
case IPV6_MULTICAST_IF:
if (sk->sk_type == SOCK_STREAM)
goto e_inval;
+ if (optlen < sizeof(int))
+ goto e_inval;
if (val) {
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
goto e_inval;
- if (__dev_get_by_index(&init_net, val) == NULL) {
+ if (__dev_get_by_index(net, val) == NULL) {
retv = -ENODEV;
break;
}
{
struct ipv6_mreq mreq;
+ if (optlen < sizeof(struct ipv6_mreq))
+ goto e_inval;
+
retv = -EPROTO;
if (inet_sk(sk)->is_icsk)
break;
{
struct ipv6_mreq mreq;
- if (optlen != sizeof(struct ipv6_mreq))
+ if (optlen < sizeof(struct ipv6_mreq))
goto e_inval;
retv = -EFAULT;
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;
struct group_source_req greqs;
int omode, add;
- if (optlen != sizeof(struct group_source_req))
+ if (optlen < sizeof(struct group_source_req))
goto e_inval;
if (copy_from_user(&greqs, optval, sizeof(greqs))) {
retv = -EFAULT;
break;
}
case IPV6_ROUTER_ALERT:
+ if (optlen < sizeof(int))
+ goto e_inval;
retv = ip6_ra_control(sk, val, NULL);
break;
case IPV6_MTU_DISCOVER:
+ if (optlen < sizeof(int))
+ goto e_inval;
if (val<0 || val>3)
goto e_inval;
np->pmtudisc = val;
retv = 0;
break;
case IPV6_MTU:
+ if (optlen < sizeof(int))
+ goto e_inval;
if (val && val < IPV6_MIN_MTU)
goto e_inval;
np->frag_size = val;
retv = 0;
break;
case IPV6_RECVERR:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->recverr = valbool;
if (!val)
skb_queue_purge(&sk->sk_error_queue);
retv = 0;
break;
case IPV6_FLOWINFO_SEND:
+ if (optlen < sizeof(int))
+ goto e_inval;
np->sndflow = valbool;
retv = 0;
break;
retv = xfrm_user_policy(sk, optname, optval, optlen);
break;
+ case IPV6_ADDR_PREFERENCES:
+ {
+ unsigned int pref = 0;
+ unsigned int prefmask = ~0;
+
+ if (optlen < sizeof(int))
+ goto e_inval;
+
+ retv = -EINVAL;
+
+ /* check PUBLIC/TMP/PUBTMP_DEFAULT conflicts */
+ switch (val & (IPV6_PREFER_SRC_PUBLIC|
+ IPV6_PREFER_SRC_TMP|
+ IPV6_PREFER_SRC_PUBTMP_DEFAULT)) {
+ case IPV6_PREFER_SRC_PUBLIC:
+ pref |= IPV6_PREFER_SRC_PUBLIC;
+ break;
+ case IPV6_PREFER_SRC_TMP:
+ pref |= IPV6_PREFER_SRC_TMP;
+ break;
+ case IPV6_PREFER_SRC_PUBTMP_DEFAULT:
+ break;
+ case 0:
+ goto pref_skip_pubtmp;
+ default:
+ goto e_inval;
+ }
+
+ prefmask &= ~(IPV6_PREFER_SRC_PUBLIC|
+ IPV6_PREFER_SRC_TMP);
+pref_skip_pubtmp:
+
+ /* check HOME/COA conflicts */
+ switch (val & (IPV6_PREFER_SRC_HOME|IPV6_PREFER_SRC_COA)) {
+ case IPV6_PREFER_SRC_HOME:
+ break;
+ case IPV6_PREFER_SRC_COA:
+ pref |= IPV6_PREFER_SRC_COA;
+ case 0:
+ goto pref_skip_coa;
+ default:
+ goto e_inval;
+ }
+
+ prefmask &= ~IPV6_PREFER_SRC_COA;
+pref_skip_coa:
+
+ /* check CGA/NONCGA conflicts */
+ switch (val & (IPV6_PREFER_SRC_CGA|IPV6_PREFER_SRC_NONCGA)) {
+ case IPV6_PREFER_SRC_CGA:
+ case IPV6_PREFER_SRC_NONCGA:
+ case 0:
+ break;
+ default:
+ goto e_inval;
+ }
+
+ np->srcprefs = (np->srcprefs & prefmask) | pref;
+ retv = 0;
+
+ break;
+ }
}
+
release_sock(sk);
return retv;
if (level != SOL_IPV6)
return -ENOPROTOOPT;
+ if (optname >= MCAST_JOIN_GROUP && optname <= MCAST_MSFILTER)
+ return compat_mc_setsockopt(sk, level, optname, optval, optlen,
+ ipv6_setsockopt);
+
err = do_ipv6_setsockopt(sk, level, optname, optval, optlen);
#ifdef CONFIG_NETFILTER
/* we need to exclude all possible ENOPROTOOPTs except default case */
int len;
int val;
+ if (ip6_mroute_opt(optname))
+ return ip6_mroute_getsockopt(sk, optname, optval, optlen);
+
if (get_user(len, optlen))
return -EFAULT;
switch (optname) {
case IPV6_ADDRFORM:
if (sk->sk_protocol != IPPROTO_UDP &&
-#ifdef CONFIG_IP_UDPLITE
sk->sk_protocol != IPPROTO_UDPLITE &&
-#endif
sk->sk_protocol != IPPROTO_TCP)
return -EINVAL;
if (sk->sk_state != TCP_ESTABLISHED)
dst = sk_dst_get(sk);
if (dst) {
if (val < 0)
- val = dst_metric(dst, RTAX_HOPLIMIT);
- if (val < 0)
- val = ipv6_get_hoplimit(dst->dev);
+ val = ip6_dst_hoplimit(dst);
dst_release(dst);
}
if (val < 0)
val = np->sndflow;
break;
+ case IPV6_ADDR_PREFERENCES:
+ val = 0;
+
+ if (np->srcprefs & IPV6_PREFER_SRC_TMP)
+ val |= IPV6_PREFER_SRC_TMP;
+ else if (np->srcprefs & IPV6_PREFER_SRC_PUBLIC)
+ val |= IPV6_PREFER_SRC_PUBLIC;
+ else {
+ /* XXX: should we return system default? */
+ val |= IPV6_PREFER_SRC_PUBTMP_DEFAULT;
+ }
+
+ if (np->srcprefs & IPV6_PREFER_SRC_COA)
+ val |= IPV6_PREFER_SRC_COA;
+ else
+ val |= IPV6_PREFER_SRC_HOME;
+ break;
+
default:
return -ENOPROTOOPT;
}
if (level != SOL_IPV6)
return -ENOPROTOOPT;
+ if (optname == MCAST_MSFILTER)
+ return compat_mc_getsockopt(sk, level, optname, optval, optlen,
+ ipv6_getsockopt);
+
err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
#ifdef CONFIG_NETFILTER
/* we need to exclude all possible ENOPROTOOPTs except default case */
projects / linux-2.6 / blobdiff