[PATCH] net: netlink_getname, packet_getname -- use DECLARE_SOCKADDR guard

Cyrill Gorcunov
2009-11-08T15:51:16Z

Use guard DECLARE_SOCKADDR in a few more places which allow
us to catch if the structure copied back is too big.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
---

Please review, comments are welcome!

net/netlink/af_netlink.c | 2 +-
net/packet/af_packet.c | 2 +-
net/unix/af_unix.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)

Index: linux-2.6.git/net/netlink/af_netlink.c
=====================================================================
--- linux-2.6.git.orig/net/netlink/af_netlink.c
+++ linux-2.6.git/net/netlink/af_netlink.c
@@ -707,7 +707,7 @@ static int netlink_getname(struct socket
{
struct sock *sk = sock->sk;
struct netlink_sock *nlk = nlk_sk(sk);
- struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;
+ DECLARE_SOCKADDR(struct sockaddr_nl *, nladdr, addr);

nladdr->nl_family = AF_NETLINK;
nladdr->nl_pad = 0;
Index: linux-2.6.git/net/packet/af_packet.c
=====================================================================
--- linux-2.6.git.orig/net/packet/af_packet.c
+++ linux-2.6.git/net/packet/af_packet.c
@@ -1532,7 +1532,7 @@ static int packet_getname(struct socket
struct net_device *dev;
struct sock *sk = sock->sk;
struct packet_sock *po = pkt_sk(sk);
- struct sockaddr_ll *sll = (struct sockaddr_ll *)uaddr;
+ DECLARE_SOCKADDR(struct sockaddr_ll *, sll, uaddr);

if (peer)
return -EOPNOTSUPP;
Index: linux-2.6.git/net/unix/af_unix.c
=====================================================================
--- linux-2.6.git.orig/net/unix/af_unix.c
+++ linux-2.6.git/net/unix/af_unix.c
@@ -1258,7 +1258,7 @@ static int unix_getname(struct socket *s
{
struct sock *sk = sock->sk;
struct unix_sock *u;
- struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr;
+ DECLARE_SOCKADDR(struct sockaddr_un *, sunaddr, uaddr);
int err = 0;

if (peer) {