[NET]: {get|set}sockopt compatibility layer

This patch extends {get|set}sockopt compatibility layer in order to
move protocol specific parts to their place and avoid huge universal
net/compat.c file in the future.
Signed-off-by: NDmitry Mishin <dim@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/net.h

@@ -149,6 +149,10 @@ struct proto_ops {
 				      int optname, char __user *optval, int optlen);
 	int		(*getsockopt)(struct socket *sock, int level,
 				      int optname, char __user *optval, int __user *optlen);
+	int		(*compat_setsockopt)(struct socket *sock, int level,
+				      int optname, char __user *optval, int optlen);
+	int		(*compat_getsockopt)(struct socket *sock, int level,
+				      int optname, char __user *optval, int __user *optlen);
 	int		(*sendmsg)   (struct kiocb *iocb, struct socket *sock,
 				      struct msghdr *m, size_t total_len);
 	int		(*recvmsg)   (struct kiocb *iocb, struct socket *sock,

include/linux/netfilter.h

@@ -80,10 +80,14 @@ struct nf_sockopt_ops
 	int set_optmin;
 	int set_optmax;
 	int (*set)(struct sock *sk, int optval, void __user *user, unsigned int len);
+	int (*compat_set)(struct sock *sk, int optval,
+			void __user *user, unsigned int len);
 
 	int get_optmin;
 	int get_optmax;
 	int (*get)(struct sock *sk, int optval, void __user *user, int *len);
+	int (*compat_get)(struct sock *sk, int optval,
+			void __user *user, int *len);
 
 	/* Number of users inside set() or get(). */
 	unsigned int use;
@@ -246,6 +250,11 @@ int nf_setsockopt(struct sock *sk, int pf, int optval, char __user *opt,
 int nf_getsockopt(struct sock *sk, int pf, int optval, char __user *opt,
 		  int *len);
 
+int compat_nf_setsockopt(struct sock *sk, int pf, int optval,
+		char __user *opt, int len);
+int compat_nf_getsockopt(struct sock *sk, int pf, int optval,
+		char __user *opt, int *len);
+
 /* Packet queuing */
 struct nf_queue_handler {
 	int (*outfn)(struct sk_buff *skb, struct nf_info *info,

include/net/inet_connection_sock.h

@@ -50,6 +50,12 @@ struct inet_connection_sock_af_ops {
 				  char __user *optval, int optlen);
 	int	    (*getsockopt)(struct sock *sk, int level, int optname, 
 				  char __user *optval, int __user *optlen);
+	int	    (*compat_setsockopt)(struct sock *sk,
+				int level, int optname,
+				char __user *optval, int optlen);
+	int	    (*compat_getsockopt)(struct sock *sk,
+				int level, int optname,
+				char __user *optval, int __user *optlen);
 	void	    (*addr2sockaddr)(struct sock *sk, struct sockaddr *);
 	int sockaddr_len;
 };

include/net/ip.h

@@ -356,6 +356,10 @@ extern void	ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb);
 extern int	ip_cmsg_send(struct msghdr *msg, struct ipcm_cookie *ipc);
 extern int	ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval, int optlen);
 extern int	ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen);
+extern int	compat_ip_setsockopt(struct sock *sk, int level,
+			int optname, char __user *optval, int optlen);
+extern int	compat_ip_getsockopt(struct sock *sk, int level,
+			int optname, char __user *optval, int __user *optlen);
 extern int	ip_ra_control(struct sock *sk, unsigned char on, void (*destructor)(struct sock *));
 
 extern int 	ip_recv_error(struct sock *sk, struct msghdr *msg, int len);

include/net/ipv6.h

@@ -520,6 +520,16 @@ extern int			ipv6_getsockopt(struct sock *sk, int level,
 						int optname,
 						char __user *optval, 
 						int __user *optlen);
+extern int			compat_ipv6_setsockopt(struct sock *sk,
+						int level,
+						int optname,
+						char __user *optval,
+						int optlen);
+extern int			compat_ipv6_getsockopt(struct sock *sk,
+						int level,
+						int optname,
+						char __user *optval,
+						int __user *optlen);
 
 extern void			ipv6_packet_init(void);
 

include/net/sctp/structs.h

@@ -514,6 +514,16 @@ struct sctp_af {
 					 int optname,
 					 char __user *optval,
 					 int __user *optlen);
+	int		(*compat_setsockopt)	(struct sock *sk,
+					 int level,
+					 int optname,
+					 char __user *optval,
+					 int optlen);
+	int		(*compat_getsockopt)	(struct sock *sk,
+					 int level,
+					 int optname,
+					 char __user *optval,
+					 int __user *optlen);
 	struct dst_entry *(*get_dst)	(struct sctp_association *asoc,
 					 union sctp_addr *daddr,
 					 union sctp_addr *saddr);

include/net/sock.h

@@ -520,6 +520,14 @@ struct proto {
 	int			(*getsockopt)(struct sock *sk, int level, 
 					int optname, char __user *optval, 
 					int __user *option);  	 
+	int			(*compat_setsockopt)(struct sock *sk,
+					int level,
+					int optname, char __user *optval,
+					int optlen);
+	int			(*compat_getsockopt)(struct sock *sk,
+					int level,
+					int optname, char __user *optval,
+					int __user *option);
 	int			(*sendmsg)(struct kiocb *iocb, struct sock *sk,
 					   struct msghdr *msg, size_t len);
 	int			(*recvmsg)(struct kiocb *iocb, struct sock *sk,
@@ -816,6 +824,10 @@ extern int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock,
 			       struct msghdr *msg, size_t size, int flags);
 extern int sock_common_setsockopt(struct socket *sock, int level, int optname,
 				  char __user *optval, int optlen);
+extern int compat_sock_common_getsockopt(struct socket *sock, int level,
+		int optname, char __user *optval, int __user *optlen);
+extern int compat_sock_common_setsockopt(struct socket *sock, int level,
+		int optname, char __user *optval, int optlen);
 
 extern void sk_common_release(struct sock *sk);
 

include/net/tcp.h

@@ -353,6 +353,12 @@ extern int			tcp_getsockopt(struct sock *sk, int level,
 extern int			tcp_setsockopt(struct sock *sk, int level, 
 					       int optname, char __user *optval, 
 					       int optlen);
+extern int			compat_tcp_getsockopt(struct sock *sk,
+					int level, int optname,
+					char __user *optval, int __user *optlen);
+extern int			compat_tcp_setsockopt(struct sock *sk,
+					int level, int optname,
+					char __user *optval, int optlen);
 extern void			tcp_set_keepalive(struct sock *sk, int val);
 extern int			tcp_recvmsg(struct kiocb *iocb, struct sock *sk,
 					    struct msghdr *msg,

net/compat.c

@@ -416,7 +416,7 @@ struct compat_sock_fprog {
 	compat_uptr_t	filter;		/* struct sock_filter * */
 };
 
-static int do_set_attach_filter(int fd, int level, int optname,
+static int do_set_attach_filter(struct socket *sock, int level, int optname,
 				char __user *optval, int optlen)
 {
 	struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
@@ -432,11 +432,12 @@ static int do_set_attach_filter(int fd, int level, int optname,
 	    __put_user(compat_ptr(ptr), &kfprog->filter))
 		return -EFAULT;
 
-	return sys_setsockopt(fd, level, optname, (char __user *)kfprog, 
+	return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
 			      sizeof(struct sock_fprog));
 }
 
-static int do_set_sock_timeout(int fd, int level, int optname, char __user *optval, int optlen)
+static int do_set_sock_timeout(struct socket *sock, int level,
+		int optname, char __user *optval, int optlen)
 {
 	struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
 	struct timeval ktime;
@@ -451,30 +452,61 @@ static int do_set_sock_timeout(int fd, int level, int optname, char __user *optv
 		return -EFAULT;
 	old_fs = get_fs();
 	set_fs(KERNEL_DS);
-	err = sys_setsockopt(fd, level, optname, (char *) &ktime, sizeof(ktime));
+	err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime));
 	set_fs(old_fs);
 
 	return err;
 }
 
+static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
+				char __user *optval, int optlen)
+{
+	if (optname == SO_ATTACH_FILTER)
+		return do_set_attach_filter(sock, level, optname,
+					    optval, optlen);
+	if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
+		return do_set_sock_timeout(sock, level, optname, optval, optlen);
+
+	return sock_setsockopt(sock, level, optname, optval, optlen);
+}
+
 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
 				char __user *optval, int optlen)
 {
+	int err;
+	struct socket *sock;
+
 	/* SO_SET_REPLACE seems to be the same in all levels */
 	if (optname == IPT_SO_SET_REPLACE)
 		return do_netfilter_replace(fd, level, optname,
 					    optval, optlen);
-	if (level == SOL_SOCKET && optname == SO_ATTACH_FILTER)
-		return do_set_attach_filter(fd, level, optname,
-					    optval, optlen);
-	if (level == SOL_SOCKET &&
-	    (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
-		return do_set_sock_timeout(fd, level, optname, optval, optlen);
 
-	return sys_setsockopt(fd, level, optname, optval, optlen);
+	if (optlen < 0)
+		return -EINVAL;
+
+	if ((sock = sockfd_lookup(fd, &err))!=NULL)
+	{
+		err = security_socket_setsockopt(sock,level,optname);
+		if (err) {
+			sockfd_put(sock);
+			return err;
+		}
+
+		if (level == SOL_SOCKET)
+			err = compat_sock_setsockopt(sock, level,
+					optname, optval, optlen);
+		else if (sock->ops->compat_setsockopt)
+			err = sock->ops->compat_setsockopt(sock, level,
+					optname, optval, optlen);
+		else
+			err = sock->ops->setsockopt(sock, level,
+					optname, optval, optlen);
+		sockfd_put(sock);
+	}
+	return err;
 }
 
-static int do_get_sock_timeout(int fd, int level, int optname,
+static int do_get_sock_timeout(struct socket *sock, int level, int optname,
 		char __user *optval, int __user *optlen)
 {
 	struct compat_timeval __user *up;
@@ -490,7 +522,7 @@ static int do_get_sock_timeout(int fd, int level, int optname,
 	len = sizeof(ktime);
 	old_fs = get_fs();
 	set_fs(KERNEL_DS);
-	err = sys_getsockopt(fd, level, optname, (char *) &ktime, &len);
+	err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
 	set_fs(old_fs);
 
 	if (!err) {
@@ -503,15 +535,42 @@ static int do_get_sock_timeout(int fd, int level, int optname,
 	return err;
 }
 
-asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
+static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
 				char __user *optval, int __user *optlen)
 {
-	if (level == SOL_SOCKET &&
-	    (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
-		return do_get_sock_timeout(fd, level, optname, optval, optlen);
-	return sys_getsockopt(fd, level, optname, optval, optlen);
+	if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
+		return do_get_sock_timeout(sock, level, optname, optval, optlen);
+	return sock_getsockopt(sock, level, optname, optval, optlen);
 }
 
+asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
+				char __user *optval, int __user *optlen)
+{
+	int err;
+	struct socket *sock;
+
+	if ((sock = sockfd_lookup(fd, &err))!=NULL)
+	{
+		err = security_socket_getsockopt(sock, level,
+							   optname);
+		if (err) {
+			sockfd_put(sock);
+			return err;
+		}
+
+		if (level == SOL_SOCKET)
+			err = compat_sock_getsockopt(sock, level,
+					optname, optval, optlen);
+		else if (sock->ops->compat_getsockopt)
+			err = sock->ops->compat_getsockopt(sock, level,
+					optname, optval, optlen);
+		else
+			err = sock->ops->getsockopt(sock, level,
+					optname, optval, optlen);
+		sockfd_put(sock);
+	}
+	return err;
+}
 /* Argument list sizes for compat_sys_socketcall */
 #define AL(x) ((x) * sizeof(u32))
 static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),

net/core/sock.c

@@ -1385,6 +1385,20 @@ int sock_common_getsockopt(struct socket *sock, int level, int optname,
 
 EXPORT_SYMBOL(sock_common_getsockopt);
 
+#ifdef CONFIG_COMPAT
+int compat_sock_common_getsockopt(struct socket *sock, int level,
+		int optname, char __user *optval, int __user *optlen)
+{
+	struct sock *sk = sock->sk;
+
+	if (sk->sk_prot->compat_setsockopt)
+		return sk->sk_prot->compat_getsockopt(sk, level,
+			optname, optval, optlen);
+	return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_getsockopt);
+#endif
+
 int sock_common_recvmsg(struct kiocb *iocb, struct socket *sock,
 			struct msghdr *msg, size_t size, int flags)
 {
@@ -1414,6 +1428,20 @@ int sock_common_setsockopt(struct socket *sock, int level, int optname,
 
 EXPORT_SYMBOL(sock_common_setsockopt);
 
+#ifdef CONFIG_COMPAT
+int compat_sock_common_setsockopt(struct socket *sock,
+		int level, int optname, char __user *optval, int optlen)
+{
+	struct sock *sk = sock->sk;
+
+	if (sk->sk_prot->compat_setsockopt)
+		return sk->sk_prot->compat_setsockopt(sk, level,
+			optname, optval, optlen);
+	return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL(compat_sock_common_setsockopt);
+#endif
+
 void sk_common_release(struct sock *sk)
 {
 	if (sk->sk_prot->destroy)

net/dccp/dccp.h

@@ -192,6 +192,14 @@ extern int	   dccp_getsockopt(struct sock *sk, int level, int optname,
 				   char __user *optval, int __user *optlen);
 extern int	   dccp_setsockopt(struct sock *sk, int level, int optname,
 				   char __user *optval, int optlen);
+#ifdef CONFIG_COMPAT
+extern int	   compat_dccp_getsockopt(struct sock *sk,
+				int level, int optname,
+				char __user *optval, int __user *optlen);
+extern int	   compat_dccp_setsockopt(struct sock *sk,
+				int level, int optname,
+				char __user *optval, int optlen);
+#endif
 extern int	   dccp_ioctl(struct sock *sk, int cmd, unsigned long arg);
 extern int	   dccp_sendmsg(struct kiocb *iocb, struct sock *sk,
 				struct msghdr *msg, size_t size);

net/dccp/ipv4.c

@@ -994,6 +994,10 @@ static struct inet_connection_sock_af_ops dccp_ipv4_af_ops = {
 	.net_header_len	= sizeof(struct iphdr),
 	.setsockopt	= ip_setsockopt,
 	.getsockopt	= ip_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_ip_setsockopt,
+	.compat_getsockopt	= compat_ip_getsockopt,
+#endif
 	.addr2sockaddr	= inet_csk_addr2sockaddr,
 	.sockaddr_len	= sizeof(struct sockaddr_in),
 };
@@ -1040,6 +1044,10 @@ static struct proto dccp_v4_prot = {
 	.init			= dccp_v4_init_sock,
 	.setsockopt		= dccp_setsockopt,
 	.getsockopt		= dccp_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_dccp_setsockopt,
+	.compat_getsockopt	= compat_dccp_getsockopt,
+#endif
 	.sendmsg		= dccp_sendmsg,
 	.recvmsg		= dccp_recvmsg,
 	.backlog_rcv		= dccp_v4_do_rcv,
@@ -1079,6 +1087,10 @@ static const struct proto_ops inet_dccp_ops = {
 	.shutdown	= inet_shutdown,
 	.setsockopt	= sock_common_setsockopt,
 	.getsockopt	= sock_common_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg	= inet_sendmsg,
 	.recvmsg	= sock_common_recvmsg,
 	.mmap		= sock_no_mmap,

net/dccp/ipv6.c

@@ -1114,6 +1114,10 @@ static struct inet_connection_sock_af_ops dccp_ipv6_af_ops = {
 	.net_header_len	= sizeof(struct ipv6hdr),
 	.setsockopt	= ipv6_setsockopt,
 	.getsockopt	= ipv6_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_ipv6_setsockopt,
+	.compat_getsockopt	= compat_ipv6_getsockopt,
+#endif
 	.addr2sockaddr	= inet6_csk_addr2sockaddr,
 	.sockaddr_len	= sizeof(struct sockaddr_in6)
 };
@@ -1130,6 +1134,10 @@ static struct inet_connection_sock_af_ops dccp_ipv6_mapped = {
 	.net_header_len	= sizeof(struct iphdr),
 	.setsockopt	= ipv6_setsockopt,
 	.getsockopt	= ipv6_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_ipv6_setsockopt,
+	.compat_getsockopt	= compat_ipv6_getsockopt,
+#endif
 	.addr2sockaddr	= inet6_csk_addr2sockaddr,
 	.sockaddr_len	= sizeof(struct sockaddr_in6)
 };
@@ -1167,6 +1175,10 @@ static struct proto dccp_v6_prot = {
 	.init		= dccp_v6_init_sock,
 	.setsockopt	= dccp_setsockopt,
 	.getsockopt	= dccp_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_dccp_setsockopt,
+	.compat_getsockopt	= compat_dccp_getsockopt,
+#endif
 	.sendmsg	= dccp_sendmsg,
 	.recvmsg	= dccp_recvmsg,
 	.backlog_rcv	= dccp_v6_do_rcv,
@@ -1204,6 +1216,10 @@ static struct proto_ops inet6_dccp_ops = {
 	.shutdown	= inet_shutdown,
 	.setsockopt	= sock_common_setsockopt,
 	.getsockopt	= sock_common_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg	= inet_sendmsg,
 	.recvmsg	= sock_common_recvmsg,
 	.mmap		= sock_no_mmap,

net/dccp/proto.c

@@ -455,18 +455,13 @@ static int dccp_setsockopt_change(struct sock *sk, int type,
 	goto out;
 }
 
-int dccp_setsockopt(struct sock *sk, int level, int optname,
-		    char __user *optval, int optlen)
+static int do_dccp_setsockopt(struct sock *sk, int level, int optname,
+		char __user *optval, int optlen)
 {
 	struct dccp_sock *dp;
 	int err;
 	int val;
 
-	if (level != SOL_DCCP)
-		return inet_csk(sk)->icsk_af_ops->setsockopt(sk, level,
-							     optname, optval,
-							     optlen);
-
 	if (optlen < sizeof(int))
 		return -EINVAL;
 
@@ -512,8 +507,34 @@ int dccp_setsockopt(struct sock *sk, int level, int optname,
 	return err;
 }
 
+int dccp_setsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	if (level != SOL_DCCP)
+		return inet_csk(sk)->icsk_af_ops->setsockopt(sk, level,
+							     optname, optval,
+							     optlen);
+	return do_dccp_setsockopt(sk, level, optname, optval, optlen);
+}
 EXPORT_SYMBOL_GPL(dccp_setsockopt);
 
+#ifdef CONFIG_COMPAT
+int compat_dccp_setsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	if (level != SOL_DCCP) {
+		if (inet_csk(sk)->icsk_af_ops->compat_setsockopt)
+			return inet_csk(sk)->icsk_af_ops->compat_setsockopt(sk,
+				level, optname, optval, optlen);
+		else
+			return inet_csk(sk)->icsk_af_ops->setsockopt(sk,
+				level, optname, optval, optlen);
+	}
+	return do_dccp_setsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL_GPL(compat_dccp_setsockopt);
+#endif
+
 static int dccp_getsockopt_service(struct sock *sk, int len,
 				   __be32 __user *optval,
 				   int __user *optlen)
@@ -545,16 +566,12 @@ static int dccp_getsockopt_service(struct sock *sk, int len,
 	return err;
 }
 
-int dccp_getsockopt(struct sock *sk, int level, int optname,
+static int do_dccp_getsockopt(struct sock *sk, int level, int optname,
 		    char __user *optval, int __user *optlen)
 {
 	struct dccp_sock *dp;
 	int val, len;
 
-	if (level != SOL_DCCP)
-		return inet_csk(sk)->icsk_af_ops->getsockopt(sk, level,
-							     optname, optval,
-							     optlen);
 	if (get_user(len, optlen))
 		return -EFAULT;
 
@@ -587,8 +604,34 @@ int dccp_getsockopt(struct sock *sk, int level, int optname,
 	return 0;
 }
 
+int dccp_getsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, int __user *optlen)
+{
+	if (level != SOL_DCCP)
+		return inet_csk(sk)->icsk_af_ops->getsockopt(sk, level,
+							     optname, optval,
+							     optlen);
+	return do_dccp_getsockopt(sk, level, optname, optval, optlen);
+}
 EXPORT_SYMBOL_GPL(dccp_getsockopt);
 
+#ifdef CONFIG_COMPAT
+int compat_dccp_getsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, int __user *optlen)
+{
+	if (level != SOL_DCCP) {
+		if (inet_csk(sk)->icsk_af_ops->compat_setsockopt)
+			return inet_csk(sk)->icsk_af_ops->compat_getsockopt(sk,
+				level, optname, optval, optlen);
+		else
+			return inet_csk(sk)->icsk_af_ops->getsockopt(sk,
+				level, optname, optval, optlen);
+	}
+	return do_dccp_getsockopt(sk, level, optname, optval, optlen);
+}
+EXPORT_SYMBOL_GPL(compat_dccp_getsockopt);
+#endif
+
 int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 		 size_t len)
 {

net/ipv4/af_inet.c

@@ -802,6 +802,10 @@ const struct proto_ops inet_stream_ops = {
 	.shutdown =	inet_shutdown,
 	.setsockopt =	sock_common_setsockopt,
 	.getsockopt =	sock_common_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg =	inet_sendmsg,
 	.recvmsg =	sock_common_recvmsg,
 	.mmap =		sock_no_mmap,
@@ -823,6 +827,10 @@ const struct proto_ops inet_dgram_ops = {
 	.shutdown =	inet_shutdown,
 	.setsockopt =	sock_common_setsockopt,
 	.getsockopt =	sock_common_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg =	inet_sendmsg,
 	.recvmsg =	sock_common_recvmsg,
 	.mmap =		sock_no_mmap,
@@ -848,6 +856,10 @@ static const struct proto_ops inet_sockraw_ops = {
 	.shutdown =	inet_shutdown,
 	.setsockopt =	sock_common_setsockopt,
 	.getsockopt =	sock_common_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg =	inet_sendmsg,
 	.recvmsg =	sock_common_recvmsg,
 	.mmap =		sock_no_mmap,

net/ipv4/ip_sockglue.c

@@ -399,14 +399,12 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len)
  *	an IP socket.
  */
 
-int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval, int optlen)
+static int do_ip_setsockopt(struct sock *sk, int level,
+		int optname, char __user *optval, int optlen)
 {
 	struct inet_sock *inet = inet_sk(sk);
 	int val=0,err;
 
-	if (level != SOL_IP)
-		return -ENOPROTOOPT;
-
 	if (((1<<optname) & ((1<<IP_PKTINFO) | (1<<IP_RECVTTL) | 
 			    (1<<IP_RECVOPTS) | (1<<IP_RECVTOS) | 
 			    (1<<IP_RETOPTS) | (1<<IP_TOS) | 
@@ -875,12 +873,7 @@ int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
 			break;
 
 		default:
-#ifdef CONFIG_NETFILTER
-			err = nf_setsockopt(sk, PF_INET, optname, optval, 
-					    optlen);
-#else
 			err = -ENOPROTOOPT;
-#endif
 			break;
 	}
 	release_sock(sk);
@@ -891,12 +884,66 @@ int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
 	return -EINVAL;
 }
 
+int ip_setsockopt(struct sock *sk, int level,
+		int optname, char __user *optval, int optlen)
+{
+	int err;
+
+	if (level != SOL_IP)
+		return -ENOPROTOOPT;
+
+	err = do_ip_setsockopt(sk, level, optname, optval, optlen);
+#ifdef CONFIG_NETFILTER
+	/* we need to exclude all possible ENOPROTOOPTs except default case */
+	if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
+		optname != IP_IPSEC_POLICY && optname != IP_XFRM_POLICY
+#ifdef CONFIG_IP_MROUTE
+		&& (optname < MRT_BASE || optname > (MRT_BASE + 10))
+#endif
+	   ) {
+		lock_sock(sk);
+		err = nf_setsockopt(sk, PF_INET, optname, optval, optlen);
+		release_sock(sk);
+	}
+#endif
+	return err;
+}
+
+#ifdef CONFIG_COMPAT
+int compat_ip_setsockopt(struct sock *sk, int level,
+		int optname, char __user *optval, int optlen)
+{
+	int err;
+
+	if (level != SOL_IP)
+		return -ENOPROTOOPT;
+
+	err = do_ip_setsockopt(sk, level, optname, optval, optlen);
+#ifdef CONFIG_NETFILTER
+	/* we need to exclude all possible ENOPROTOOPTs except default case */
+	if (err == -ENOPROTOOPT && optname != IP_HDRINCL &&
+		optname != IP_IPSEC_POLICY && optname != IP_XFRM_POLICY
+#ifdef CONFIG_IP_MROUTE
+		&& (optname < MRT_BASE || optname > (MRT_BASE + 10))
+#endif
+	   ) {
+		lock_sock(sk);
+		err = compat_nf_setsockopt(sk, PF_INET,
+				optname, optval, optlen);
+		release_sock(sk);
+	}
+#endif
+	return err;
+}
+#endif
+
 /*
  *	Get the options. Note for future reference. The GET of IP options gets the
  *	_received_ ones. The set sets the _sent_ ones.
  */
 
-int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen)
+static int do_ip_getsockopt(struct sock *sk, int level, int optname,
+		char __user *optval, int __user *optlen)
 {
 	struct inet_sock *inet = inet_sk(sk);
 	int val;
@@ -1080,17 +1127,8 @@ int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
 			val = inet->freebind; 
 			break; 
 		default:
-#ifdef CONFIG_NETFILTER
-			val = nf_getsockopt(sk, PF_INET, optname, optval, 
-					    &len);
-			release_sock(sk);
-			if (val >= 0)
-				val = put_user(len, optlen);
-			return val;
-#else
 			release_sock(sk);
 			return -ENOPROTOOPT;
-#endif
 	}
 	release_sock(sk);
 	
@@ -1111,7 +1149,73 @@ int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
 	return 0;
 }
 
+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);
+#ifdef CONFIG_NETFILTER
+	/* we need to exclude all possible ENOPROTOOPTs except default case */
+	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS
+#ifdef CONFIG_IP_MROUTE
+		&& (optname < MRT_BASE || optname > MRT_BASE+10)
+#endif
+	   ) {
+	   	int len;
+
+		if(get_user(len,optlen))
+			return -EFAULT;
+
+		lock_sock(sk);
+		err = nf_getsockopt(sk, PF_INET, optname, optval,
+				&len);
+		release_sock(sk);
+		if (err >= 0)
+			err = put_user(len, optlen);
+		return err;
+	}
+#endif
+	return err;
+}
+
+#ifdef CONFIG_COMPAT
+int compat_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);
+#ifdef CONFIG_NETFILTER
+	/* we need to exclude all possible ENOPROTOOPTs except default case */
+	if (err == -ENOPROTOOPT && optname != IP_PKTOPTIONS
+#ifdef CONFIG_IP_MROUTE
+		&& (optname < MRT_BASE || optname > MRT_BASE+10)
+#endif
+	   ) {
+	   	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;
+}
+#endif
+
 EXPORT_SYMBOL(ip_cmsg_recv);
 
 EXPORT_SYMBOL(ip_getsockopt);
 EXPORT_SYMBOL(ip_setsockopt);
+#ifdef CONFIG_COMPAT
+EXPORT_SYMBOL(compat_ip_getsockopt);
+EXPORT_SYMBOL(compat_ip_setsockopt);
+#endif

net/ipv4/raw.c

@@ -660,12 +660,9 @@ static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *o
 out:	return ret;
 }
 
-static int raw_setsockopt(struct sock *sk, int level, int optname, 
+static int do_raw_setsockopt(struct sock *sk, int level, int optname,
 			  char __user *optval, int optlen)
 {
-	if (level != SOL_RAW)
-		return ip_setsockopt(sk, level, optname, optval, optlen);
-
 	if (optname == ICMP_FILTER) {
 		if (inet_sk(sk)->num != IPPROTO_ICMP)
 			return -EOPNOTSUPP;
@@ -675,12 +672,28 @@ static int raw_setsockopt(struct sock *sk, int level, int optname,
 	return -ENOPROTOOPT;
 }
 
-static int raw_getsockopt(struct sock *sk, int level, int optname, 
-			  char __user *optval, int __user *optlen)
+static int raw_setsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int optlen)
 {
 	if (level != SOL_RAW)
-		return ip_getsockopt(sk, level, optname, optval, optlen);
+		return ip_setsockopt(sk, level, optname, optval, optlen);
+	return do_raw_setsockopt(sk, level, optname, optval, optlen);
+}
 
+#ifdef CONFIG_COMPAT
+static int compat_raw_setsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int optlen)
+{
+	if (level != SOL_RAW)
+		return compat_ip_setsockopt(sk, level,
+				optname, optval, optlen);
+	return do_raw_setsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
+static int do_raw_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
 	if (optname == ICMP_FILTER) {
 		if (inet_sk(sk)->num != IPPROTO_ICMP)
 			return -EOPNOTSUPP;
@@ -690,6 +703,25 @@ static int raw_getsockopt(struct sock *sk, int level, int optname,
 	return -ENOPROTOOPT;
 }
 
+static int raw_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	if (level != SOL_RAW)
+		return ip_getsockopt(sk, level, optname, optval, optlen);
+	return do_raw_getsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_raw_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	if (level != SOL_RAW)
+		return compat_ip_getsockopt(sk, level,
+				optname, optval, optlen);
+	return do_raw_getsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
 static int raw_ioctl(struct sock *sk, int cmd, unsigned long arg)
 {
 	switch (cmd) {
@@ -728,6 +760,10 @@ struct proto raw_prot = {
 	.init =		raw_init,
 	.setsockopt =	raw_setsockopt,
 	.getsockopt =	raw_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt =	compat_raw_setsockopt,
+	.compat_getsockopt =	compat_raw_getsockopt,
+#endif
 	.sendmsg =	raw_sendmsg,
 	.recvmsg =	raw_recvmsg,
 	.bind =		raw_bind,

net/ipv4/tcp.c

@@ -1687,18 +1687,14 @@ int tcp_disconnect(struct sock *sk, int flags)
 /*
  *	Socket option code for TCP.
  */
-int tcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
-		   int optlen)
+static int do_tcp_setsockopt(struct sock *sk, int level,
+		int optname, char __user *optval, int optlen)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct inet_connection_sock *icsk = inet_csk(sk);
 	int val;
 	int err = 0;
 
-	if (level != SOL_TCP)
-		return icsk->icsk_af_ops->setsockopt(sk, level, optname,
-						     optval, optlen);
-
 	/* This is a string value all the others are int's */
 	if (optname == TCP_CONGESTION) {
 		char name[TCP_CA_NAME_MAX];
@@ -1871,6 +1867,35 @@ int tcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
 	return err;
 }
 
+int tcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
+		   int optlen)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (level != SOL_TCP)
+		return icsk->icsk_af_ops->setsockopt(sk, level, optname,
+						     optval, optlen);
+	return do_tcp_setsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+int compat_tcp_setsockopt(struct sock *sk, int level,
+		int optname, char __user *optval, int optlen)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (level != SOL_TCP) {
+		if (icsk->icsk_af_ops->compat_setsockopt)
+			return icsk->icsk_af_ops->compat_setsockopt(sk,
+				level, optname, optval, optlen);
+		else
+			return icsk->icsk_af_ops->setsockopt(sk,
+				level, optname, optval, optlen);
+	}
+	return do_tcp_setsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
 /* Return information about state of tcp endpoint in API format. */
 void tcp_get_info(struct sock *sk, struct tcp_info *info)
 {
@@ -1931,17 +1956,13 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info)
 
 EXPORT_SYMBOL_GPL(tcp_get_info);
 
-int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
-		   int __user *optlen)
+static int do_tcp_getsockopt(struct sock *sk, int level,
+		int optname, char __user *optval, int __user *optlen)
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
 	struct tcp_sock *tp = tcp_sk(sk);
 	int val, len;
 
-	if (level != SOL_TCP)
-		return icsk->icsk_af_ops->getsockopt(sk, level, optname,
-						     optval, optlen);
-
 	if (get_user(len, optlen))
 		return -EFAULT;
 
@@ -2025,6 +2046,34 @@ int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
 	return 0;
 }
 
+int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
+		   int __user *optlen)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (level != SOL_TCP)
+		return icsk->icsk_af_ops->getsockopt(sk, level, optname,
+						     optval, optlen);
+	return do_tcp_getsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+int compat_tcp_getsockopt(struct sock *sk, int level,
+		int optname, char __user *optval, int __user *optlen)
+{
+	struct inet_connection_sock *icsk = inet_csk(sk);
+
+	if (level != SOL_TCP) {
+		if (icsk->icsk_af_ops->compat_getsockopt)
+			return icsk->icsk_af_ops->compat_getsockopt(sk,
+				level, optname, optval, optlen);
+		else
+			return icsk->icsk_af_ops->getsockopt(sk,
+				level, optname, optval, optlen);
+	}
+	return do_tcp_getsockopt(sk, level, optname, optval, optlen);
+}
+#endif
 
 extern void __skb_cb_too_small_for_tcp(int, int);
 extern struct tcp_congestion_ops tcp_reno;
@@ -2142,3 +2191,7 @@ EXPORT_SYMBOL(tcp_sendpage);
 EXPORT_SYMBOL(tcp_setsockopt);
 EXPORT_SYMBOL(tcp_shutdown);
 EXPORT_SYMBOL(tcp_statistics);
+#ifdef CONFIG_COMPAT
+EXPORT_SYMBOL(compat_tcp_setsockopt);
+EXPORT_SYMBOL(compat_tcp_getsockopt);
+#endif

net/ipv4/tcp_ipv4.c

@@ -1226,6 +1226,10 @@ struct inet_connection_sock_af_ops ipv4_specific = {
 	.net_header_len	=	sizeof(struct iphdr),
 	.setsockopt	=	ip_setsockopt,
 	.getsockopt	=	ip_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt =	compat_ip_setsockopt,
+	.compat_getsockopt =	compat_ip_getsockopt,
+#endif
 	.addr2sockaddr	=	inet_csk_addr2sockaddr,
 	.sockaddr_len	=	sizeof(struct sockaddr_in),
 };
@@ -1808,6 +1812,10 @@ struct proto tcp_prot = {
 	.shutdown		= tcp_shutdown,
 	.setsockopt		= tcp_setsockopt,
 	.getsockopt		= tcp_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_tcp_setsockopt,
+	.compat_getsockopt	= compat_tcp_getsockopt,
+#endif
 	.sendmsg		= tcp_sendmsg,
 	.recvmsg		= tcp_recvmsg,
 	.backlog_rcv		= tcp_v4_do_rcv,

net/ipv4/udp.c

@@ -1207,16 +1207,13 @@ static int udp_destroy_sock(struct sock *sk)
 /*
  *	Socket option code for UDP
  */
-static int udp_setsockopt(struct sock *sk, int level, int optname, 
+static int do_udp_setsockopt(struct sock *sk, int level, int optname,
 			  char __user *optval, int optlen)
 {
 	struct udp_sock *up = udp_sk(sk);
 	int val;
 	int err = 0;
 
-	if (level != SOL_UDP)
-		return ip_setsockopt(sk, level, optname, optval, optlen);
-
 	if(optlen<sizeof(int))
 		return -EINVAL;
 
@@ -1256,15 +1253,31 @@ static int udp_setsockopt(struct sock *sk, int level, int optname,
 	return err;
 }
 
-static int udp_getsockopt(struct sock *sk, int level, int optname, 
+static int udp_setsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int optlen)
+{
+	if (level != SOL_UDP)
+		return ip_setsockopt(sk, level, optname, optval, optlen);
+	return do_udp_setsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_udp_setsockopt(struct sock *sk, int level, int optname,
+		char __user *optval, int optlen)
+{
+	if (level != SOL_UDP)
+		return compat_ip_setsockopt(sk, level,
+				optname, optval, optlen);
+	return do_udp_setsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
+static int do_udp_getsockopt(struct sock *sk, int level, int optname,
 			  char __user *optval, int __user *optlen)
 {
 	struct udp_sock *up = udp_sk(sk);
 	int val, len;
 
-	if (level != SOL_UDP)
-		return ip_getsockopt(sk, level, optname, optval, optlen);
-
 	if(get_user(len,optlen))
 		return -EFAULT;
 
@@ -1293,6 +1306,24 @@ static int udp_getsockopt(struct sock *sk, int level, int optname,
   	return 0;
 }
 
+static int udp_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	if (level != SOL_UDP)
+		return ip_getsockopt(sk, level, optname, optval, optlen);
+	return do_udp_getsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_udp_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	if (level != SOL_UDP)
+		return compat_ip_getsockopt(sk, level,
+				optname, optval, optlen);
+	return do_udp_getsockopt(sk, level, optname, optval, optlen);
+}
+#endif
 /**
  * 	udp_poll - wait for a UDP event.
  *	@file - file struct
@@ -1350,6 +1381,10 @@ struct proto udp_prot = {
 	.destroy =	udp_destroy_sock,
 	.setsockopt =	udp_setsockopt,
 	.getsockopt =	udp_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt =	compat_udp_setsockopt,
+	.compat_getsockopt =	compat_udp_getsockopt,
+#endif
 	.sendmsg =	udp_sendmsg,
 	.recvmsg =	udp_recvmsg,
 	.sendpage =	udp_sendpage,

net/ipv6/af_inet6.c

@@ -470,6 +470,10 @@ const struct proto_ops inet6_stream_ops = {
 	.shutdown =	inet_shutdown,			/* ok		*/
 	.setsockopt =	sock_common_setsockopt,		/* ok		*/
 	.getsockopt =	sock_common_getsockopt,		/* ok		*/
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg =	inet_sendmsg,			/* ok		*/
 	.recvmsg =	sock_common_recvmsg,		/* ok		*/
 	.mmap =		sock_no_mmap,
@@ -491,6 +495,10 @@ const struct proto_ops inet6_dgram_ops = {
 	.shutdown =	inet_shutdown,			/* ok		*/
 	.setsockopt =	sock_common_setsockopt,		/* ok		*/
 	.getsockopt =	sock_common_getsockopt,		/* ok		*/
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg =	inet_sendmsg,			/* ok		*/
 	.recvmsg =	sock_common_recvmsg,		/* ok		*/
 	.mmap =		sock_no_mmap,
@@ -519,6 +527,10 @@ static const struct proto_ops inet6_sockraw_ops = {
 	.shutdown =	inet_shutdown,			/* ok		*/
 	.setsockopt =	sock_common_setsockopt,		/* ok		*/
 	.getsockopt =	sock_common_getsockopt,		/* ok		*/
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg =	inet_sendmsg,			/* ok		*/
 	.recvmsg =	sock_common_recvmsg,		/* ok		*/
 	.mmap =		sock_no_mmap,

net/ipv6/ipv6_sockglue.c

@@ -109,19 +109,13 @@ int ip6_ra_control(struct sock *sk, int sel, void (*destructor)(struct sock *))
 	return 0;
 }
 
-int ipv6_setsockopt(struct sock *sk, int level, int optname,
+static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
 		    char __user *optval, int optlen)
 {
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	int val, valbool;
 	int retv = -ENOPROTOOPT;
 
-	if (level == SOL_IP && sk->sk_type != SOCK_RAW)
-		return udp_prot.setsockopt(sk, level, optname, optval, optlen);
-
-	if(level!=SOL_IPV6)
-		goto out;
-
 	if (optval == NULL)
 		val=0;
 	else if (get_user(val, (int __user *) optval))
@@ -613,17 +607,9 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname,
 		retv = xfrm_user_policy(sk, optname, optval, optlen);
 		break;
 
-#ifdef CONFIG_NETFILTER
-	default:
-		retv = nf_setsockopt(sk, PF_INET6, optname, optval, 
-					    optlen);
-		break;
-#endif
-
 	}
 	release_sock(sk);
 
-out:
 	return retv;
 
 e_inval:
@@ -631,6 +617,65 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname,
 	return -EINVAL;
 }
 
+int ipv6_setsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	int err;
+
+	if (level == SOL_IP && sk->sk_type != SOCK_RAW)
+		return udp_prot.setsockopt(sk, level, optname, optval, optlen);
+
+	if (level != SOL_IPV6)
+		return -ENOPROTOOPT;
+
+	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) {
+		lock_sock(sk);
+		err = nf_setsockopt(sk, PF_INET6, optname, optval,
+				optlen);
+		release_sock(sk);
+	}
+#endif
+	return err;
+}
+
+
+#ifdef CONFIG_COMPAT
+int compat_ipv6_setsockopt(struct sock *sk, int level, int optname,
+		    char __user *optval, int optlen)
+{
+	int err;
+
+	if (level == SOL_IP && sk->sk_type != SOCK_RAW) {
+		if (udp_prot.compat_setsockopt)
+			return udp_prot.compat_setsockopt(sk, level,
+					optname, optval, optlen);
+		else
+			return udp_prot.setsockopt(sk, level,
+					optname, optval, optlen);
+	}
+
+	if (level != SOL_IPV6)
+		return -ENOPROTOOPT;
+
+	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) {
+		lock_sock(sk);
+		err = compat_nf_setsockopt(sk, PF_INET6, optname, optval,
+				optlen);
+		release_sock(sk);
+	}
+#endif
+	return err;
+}
+#endif
+
 static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_opt_hdr *hdr,
 				  char __user *optval, int len)
 {
@@ -642,17 +687,13 @@ static int ipv6_getsockopt_sticky(struct sock *sk, struct ipv6_opt_hdr *hdr,
 	return len;
 }
 
-int ipv6_getsockopt(struct sock *sk, int level, int optname,
+static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
 		    char __user *optval, int __user *optlen)
 {
 	struct ipv6_pinfo *np = inet6_sk(sk);
 	int len;
 	int val;
 
-	if (level == SOL_IP && sk->sk_type != SOCK_RAW)
-		return udp_prot.getsockopt(sk, level, optname, optval, optlen);
-	if(level!=SOL_IPV6)
-		return -ENOPROTOOPT;
 	if (get_user(len, optlen))
 		return -EFAULT;
 	switch (optname) {
@@ -842,17 +883,7 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
 		break;
 
 	default:
-#ifdef CONFIG_NETFILTER
-		lock_sock(sk);
-		val = nf_getsockopt(sk, PF_INET6, optname, optval, 
-				    &len);
-		release_sock(sk);
-		if (val >= 0)
-			val = put_user(len, optlen);
-		return val;
-#else
 		return -EINVAL;
-#endif
 	}
 	len = min_t(unsigned int, sizeof(int), len);
 	if(put_user(len, optlen))
@@ -862,6 +893,78 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
 	return 0;
 }
 
+int 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)
+		return udp_prot.getsockopt(sk, level, optname, optval, optlen);
+
+	if(level != SOL_IPV6)
+		return -ENOPROTOOPT;
+
+	err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
+#ifdef CONFIG_NETFILTER
+	/* we need to exclude all possible EINVALs except default case */
+	if (err == -ENOPROTOOPT && optname != IPV6_ADDRFORM &&
+			optname != MCAST_MSFILTER) {
+		int len;
+
+		if (get_user(len, optlen))
+			return -EFAULT;
+
+		lock_sock(sk);
+		err = nf_getsockopt(sk, PF_INET6, optname, optval,
+				&len);
+		release_sock(sk);
+		if (err >= 0)
+			err = put_user(len, optlen);
+	}
+#endif
+	return err;
+}
+
+#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)
+			return udp_prot.compat_getsockopt(sk, level,
+					optname, optval, optlen);
+		else
+			return udp_prot.getsockopt(sk, level,
+					optname, optval, optlen);
+	}
+
+	if(level != SOL_IPV6)
+		return -ENOPROTOOPT;
+
+	err = do_ipv6_getsockopt(sk, level, optname, optval, optlen);
+#ifdef CONFIG_NETFILTER
+	/* we need to exclude all possible EINVALs except default case */
+	if (err == -ENOPROTOOPT && optname != IPV6_ADDRFORM &&
+			optname != MCAST_MSFILTER) {
+		int len;
+
+		if (get_user(len, optlen))
+			return -EFAULT;
+
+		lock_sock(sk);
+		err = compat_nf_getsockopt(sk, PF_INET6, optname, optval,
+				&len);
+		release_sock(sk);
+		if (err >= 0)
+			err = put_user(len, optlen);
+	}
+#endif
+	return err;
+}
+#endif
+
 void __init ipv6_packet_init(void)
 {
 	dev_add_pack(&ipv6_packet_type);

net/ipv6/ipv6_syms.c

@@ -18,6 +18,10 @@ EXPORT_SYMBOL(ip6_route_output);
 EXPORT_SYMBOL(addrconf_lock);
 EXPORT_SYMBOL(ipv6_setsockopt);
 EXPORT_SYMBOL(ipv6_getsockopt);
+#ifdef CONFIG_COMPAT
+EXPORT_SYMBOL(compat_ipv6_setsockopt);
+EXPORT_SYMBOL(compat_ipv6_getsockopt);
+#endif
 EXPORT_SYMBOL(inet6_register_protosw);
 EXPORT_SYMBOL(inet6_unregister_protosw);
 EXPORT_SYMBOL(inet6_add_protocol);

net/ipv6/raw.c

@@ -859,29 +859,12 @@ static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
 }
 
 
-static int rawv6_setsockopt(struct sock *sk, int level, int optname, 
+static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
 			    char __user *optval, int optlen)
 {
 	struct raw6_sock *rp = raw6_sk(sk);
 	int val;
 
-	switch(level) {
-		case SOL_RAW:
-			break;
-
-		case SOL_ICMPV6:
-			if (inet_sk(sk)->num != IPPROTO_ICMPV6)
-				return -EOPNOTSUPP;
-			return rawv6_seticmpfilter(sk, level, optname, optval,
-						   optlen);
-		case SOL_IPV6:
-			if (optname == IPV6_CHECKSUM)
-				break;
-		default:
-			return ipv6_setsockopt(sk, level, optname, optval,
-					       optlen);
-	};
-
   	if (get_user(val, (int __user *)optval))
 		return -EFAULT;
 
@@ -906,12 +889,9 @@ static int rawv6_setsockopt(struct sock *sk, int level, int optname,
 	}
 }
 
-static int rawv6_getsockopt(struct sock *sk, int level, int optname, 
-			    char __user *optval, int __user *optlen)
+static int rawv6_setsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int optlen)
 {
-	struct raw6_sock *rp = raw6_sk(sk);
-	int val, len;
-
 	switch(level) {
 		case SOL_RAW:
 			break;
@@ -919,15 +899,47 @@ static int rawv6_getsockopt(struct sock *sk, int level, int optname,
 		case SOL_ICMPV6:
 			if (inet_sk(sk)->num != IPPROTO_ICMPV6)
 				return -EOPNOTSUPP;
-			return rawv6_geticmpfilter(sk, level, optname, optval,
+			return rawv6_seticmpfilter(sk, level, optname, optval,
 						   optlen);
 		case SOL_IPV6:
 			if (optname == IPV6_CHECKSUM)
 				break;
 		default:
-			return ipv6_getsockopt(sk, level, optname, optval,
+			return ipv6_setsockopt(sk, level, optname, optval,
 					       optlen);
 	};
+	return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_rawv6_setsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int optlen)
+{
+	switch(level) {
+		case SOL_RAW:
+			break;
+
+		case SOL_ICMPV6:
+			if (inet_sk(sk)->num != IPPROTO_ICMPV6)
+				return -EOPNOTSUPP;
+			return rawv6_seticmpfilter(sk, level, optname, optval,
+						   optlen);
+		case SOL_IPV6:
+			if (optname == IPV6_CHECKSUM)
+				break;
+		default:
+			return compat_ipv6_setsockopt(sk, level,
+					optname, optval, optlen);
+	};
+	return do_rawv6_setsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
+static int do_rawv6_getsockopt(struct sock *sk, int level, int optname,
+			    char __user *optval, int __user *optlen)
+{
+	struct raw6_sock *rp = raw6_sk(sk);
+	int val, len;
 
 	if (get_user(len,optlen))
 		return -EFAULT;
@@ -953,6 +965,52 @@ static int rawv6_getsockopt(struct sock *sk, int level, int optname,
 	return 0;
 }
 
+static int rawv6_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	switch(level) {
+		case SOL_RAW:
+			break;
+
+		case SOL_ICMPV6:
+			if (inet_sk(sk)->num != IPPROTO_ICMPV6)
+				return -EOPNOTSUPP;
+			return rawv6_geticmpfilter(sk, level, optname, optval,
+						   optlen);
+		case SOL_IPV6:
+			if (optname == IPV6_CHECKSUM)
+				break;
+		default:
+			return ipv6_getsockopt(sk, level, optname, optval,
+					       optlen);
+	};
+	return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_rawv6_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	switch(level) {
+		case SOL_RAW:
+			break;
+
+		case SOL_ICMPV6:
+			if (inet_sk(sk)->num != IPPROTO_ICMPV6)
+				return -EOPNOTSUPP;
+			return rawv6_geticmpfilter(sk, level, optname, optval,
+						   optlen);
+		case SOL_IPV6:
+			if (optname == IPV6_CHECKSUM)
+				break;
+		default:
+			return compat_ipv6_getsockopt(sk, level,
+					optname, optval, optlen);
+	};
+	return do_rawv6_getsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
 static int rawv6_ioctl(struct sock *sk, int cmd, unsigned long arg)
 {
 	switch(cmd) {
@@ -1008,6 +1066,10 @@ struct proto rawv6_prot = {
 	.destroy =	inet6_destroy_sock,
 	.setsockopt =	rawv6_setsockopt,
 	.getsockopt =	rawv6_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt =	compat_rawv6_setsockopt,
+	.compat_getsockopt =	compat_rawv6_getsockopt,
+#endif
 	.sendmsg =	rawv6_sendmsg,
 	.recvmsg =	rawv6_recvmsg,
 	.bind =		rawv6_bind,

net/ipv6/tcp_ipv6.c

@@ -1308,6 +1308,10 @@ static struct inet_connection_sock_af_ops ipv6_specific = {
 
 	.setsockopt	=	ipv6_setsockopt,
 	.getsockopt	=	ipv6_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_ipv6_setsockopt,
+	.compat_getsockopt	= compat_ipv6_getsockopt,
+#endif
 	.addr2sockaddr	=	inet6_csk_addr2sockaddr,
 	.sockaddr_len	=	sizeof(struct sockaddr_in6)
 };
@@ -1327,6 +1331,10 @@ static struct inet_connection_sock_af_ops ipv6_mapped = {
 
 	.setsockopt	=	ipv6_setsockopt,
 	.getsockopt	=	ipv6_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_ipv6_setsockopt,
+	.compat_getsockopt	= compat_ipv6_getsockopt,
+#endif
 	.addr2sockaddr	=	inet6_csk_addr2sockaddr,
 	.sockaddr_len	=	sizeof(struct sockaddr_in6)
 };
@@ -1566,6 +1574,10 @@ struct proto tcpv6_prot = {
 	.shutdown		= tcp_shutdown,
 	.setsockopt		= tcp_setsockopt,
 	.getsockopt		= tcp_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_tcp_setsockopt,
+	.compat_getsockopt	= compat_tcp_getsockopt,
+#endif
 	.sendmsg		= tcp_sendmsg,
 	.recvmsg		= tcp_recvmsg,
 	.backlog_rcv		= tcp_v6_do_rcv,

net/ipv6/udp.c

@@ -880,16 +880,13 @@ static int udpv6_destroy_sock(struct sock *sk)
 /*
  *	Socket option code for UDP
  */
-static int udpv6_setsockopt(struct sock *sk, int level, int optname, 
+static int do_udpv6_setsockopt(struct sock *sk, int level, int optname,
 			  char __user *optval, int optlen)
 {
 	struct udp_sock *up = udp_sk(sk);
 	int val;
 	int err = 0;
 
-	if (level != SOL_UDP)
-		return ipv6_setsockopt(sk, level, optname, optval, optlen);
-
 	if(optlen<sizeof(int))
 		return -EINVAL;
 
@@ -927,15 +924,31 @@ static int udpv6_setsockopt(struct sock *sk, int level, int optname,
 	return err;
 }
 
-static int udpv6_getsockopt(struct sock *sk, int level, int optname, 
+static int udpv6_setsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int optlen)
+{
+	if (level != SOL_UDP)
+		return ipv6_setsockopt(sk, level, optname, optval, optlen);
+	return do_udpv6_setsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
+		char __user *optval, int optlen)
+{
+	if (level != SOL_UDP)
+		return compat_ipv6_setsockopt(sk, level,
+				optname, optval, optlen);
+	return do_udpv6_setsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
+static int do_udpv6_getsockopt(struct sock *sk, int level, int optname,
 			  char __user *optval, int __user *optlen)
 {
 	struct udp_sock *up = udp_sk(sk);
 	int val, len;
 
-	if (level != SOL_UDP)
-		return ipv6_getsockopt(sk, level, optname, optval, optlen);
-
 	if(get_user(len,optlen))
 		return -EFAULT;
 
@@ -964,6 +977,25 @@ static int udpv6_getsockopt(struct sock *sk, int level, int optname,
   	return 0;
 }
 
+static int udpv6_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	if (level != SOL_UDP)
+		return ipv6_getsockopt(sk, level, optname, optval, optlen);
+	return do_udpv6_getsockopt(sk, level, optname, optval, optlen);
+}
+
+#ifdef CONFIG_COMPAT
+static int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
+			  char __user *optval, int __user *optlen)
+{
+	if (level != SOL_UDP)
+		return compat_ipv6_getsockopt(sk, level,
+				optname, optval, optlen);
+	return do_udpv6_getsockopt(sk, level, optname, optval, optlen);
+}
+#endif
+
 static struct inet6_protocol udpv6_protocol = {
 	.handler	=	udpv6_rcv,
 	.err_handler	=	udpv6_err,
@@ -1046,6 +1078,10 @@ struct proto udpv6_prot = {
 	.destroy =	udpv6_destroy_sock,
 	.setsockopt =	udpv6_setsockopt,
 	.getsockopt =	udpv6_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt =	compat_udpv6_setsockopt,
+	.compat_getsockopt =	compat_udpv6_getsockopt,
+#endif
 	.sendmsg =	udpv6_sendmsg,
 	.recvmsg =	udpv6_recvmsg,
 	.backlog_rcv =	udpv6_queue_rcv_skb,

net/netfilter/nf_sockopt.c

@@ -131,3 +131,72 @@ int nf_getsockopt(struct sock *sk, int pf, int val, char __user *opt, int *len)
 }
 EXPORT_SYMBOL(nf_getsockopt);
 
+#ifdef CONFIG_COMPAT
+static int compat_nf_sockopt(struct sock *sk, int pf, int val,
+		      char __user *opt, int *len, int get)
+{
+	struct list_head *i;
+	struct nf_sockopt_ops *ops;
+	int ret;
+
+	if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
+		return -EINTR;
+
+	list_for_each(i, &nf_sockopts) {
+		ops = (struct nf_sockopt_ops *)i;
+		if (ops->pf == pf) {
+			if (get) {
+				if (val >= ops->get_optmin
+				    && val < ops->get_optmax) {
+					ops->use++;
+					mutex_unlock(&nf_sockopt_mutex);
+					if (ops->compat_get)
+						ret = ops->compat_get(sk,
+							val, opt, len);
+					else
+						ret = ops->get(sk,
+							val, opt, len);
+					goto out;
+				}
+			} else {
+				if (val >= ops->set_optmin
+				    && val < ops->set_optmax) {
+					ops->use++;
+					mutex_unlock(&nf_sockopt_mutex);
+					if (ops->compat_set)
+						ret = ops->compat_set(sk,
+							val, opt, *len);
+					else
+						ret = ops->set(sk,
+							val, opt, *len);
+					goto out;
+				}
+			}
+		}
+	}
+	mutex_unlock(&nf_sockopt_mutex);
+	return -ENOPROTOOPT;
+
+ out:
+	mutex_lock(&nf_sockopt_mutex);
+	ops->use--;
+	if (ops->cleanup_task)
+		wake_up_process(ops->cleanup_task);
+	mutex_unlock(&nf_sockopt_mutex);
+	return ret;
+}
+
+int compat_nf_setsockopt(struct sock *sk, int pf,
+		int val, char __user *opt, int len)
+{
+	return compat_nf_sockopt(sk, pf, val, opt, &len, 0);
+}
+EXPORT_SYMBOL(compat_nf_setsockopt);
+
+int compat_nf_getsockopt(struct sock *sk, int pf,
+		int val, char __user *opt, int *len)
+{
+	return compat_nf_sockopt(sk, pf, val, opt, len, 1);
+}
+EXPORT_SYMBOL(compat_nf_getsockopt);
+#endif

net/sctp/ipv6.c

@@ -875,6 +875,10 @@ static const struct proto_ops inet6_seqpacket_ops = {
 	.shutdown   = inet_shutdown,
 	.setsockopt = sock_common_setsockopt,
 	.getsockopt = sock_common_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_sock_common_setsockopt,
+	.compat_getsockopt	= compat_sock_common_getsockopt,
+#endif
 	.sendmsg    = inet_sendmsg,
 	.recvmsg    = sock_common_recvmsg,
 	.mmap       = sock_no_mmap,
@@ -914,6 +918,10 @@ static struct sctp_af sctp_ipv6_specific = {
 	.sctp_xmit       = sctp_v6_xmit,
 	.setsockopt      = ipv6_setsockopt,
 	.getsockopt      = ipv6_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt	= compat_ipv6_setsockopt,
+	.compat_getsockopt	= compat_ipv6_getsockopt,
+#endif
 	.get_dst	 = sctp_v6_get_dst,
 	.get_saddr	 = sctp_v6_get_saddr,
 	.copy_addrlist   = sctp_v6_copy_addrlist,

net/sctp/protocol.c

@@ -845,6 +845,10 @@ static const struct proto_ops inet_seqpacket_ops = {
 	.shutdown    = inet_shutdown,     /* Looks harmless.  */
 	.setsockopt  = sock_common_setsockopt,   /* IP_SOL IP_OPTION is a problem. */
 	.getsockopt  = sock_common_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt  = compat_sock_common_setsockopt,
+	.compat_getsockopt  = compat_sock_common_getsockopt,
+#endif
 	.sendmsg     = inet_sendmsg,
 	.recvmsg     = sock_common_recvmsg,
 	.mmap        = sock_no_mmap,
@@ -883,6 +887,10 @@ static struct sctp_af sctp_ipv4_specific = {
 	.sctp_xmit      = sctp_v4_xmit,
 	.setsockopt     = ip_setsockopt,
 	.getsockopt     = ip_getsockopt,
+#ifdef CONFIG_COMPAT
+	.compat_setsockopt     = compat_ip_setsockopt,
+	.compat_getsockopt     = compat_ip_getsockopt,
+#endif
 	.get_dst	= sctp_v4_get_dst,
 	.get_saddr	= sctp_v4_get_saddr,
 	.copy_addrlist  = sctp_v4_copy_addrlist,