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authorAllan Stephens <allan.stephens@windriver.com>2006-06-25 23:49:06 -0700
committerDavid S. Miller <davem@davemloft.net>2006-06-25 23:49:06 -0700
commit51f9cc1ff8aa0866ff8fb3c06be4c64b5edbb2e8 (patch)
treeba3bfa86415fb9afa88e764672beb6fb9014b231 /net/tipc/socket.c
parenta3b0a5a9d004002a9cf9cf7a9d10cf1447a73d2b (diff)
downloadlinux-2.6.34-ux500-51f9cc1ff8aa0866ff8fb3c06be4c64b5edbb2e8.tar.gz
[TIPC]: Optimized argument validation done by connect().
Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Per Liden <per.liden@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/socket.c')
-rw-r--r--net/tipc/socket.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 6d4d2b0063a..32d778448a0 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -455,7 +455,8 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
if (unlikely(!dest))
return -EDESTADDRREQ;
- if (unlikely(dest->family != AF_TIPC))
+ if (unlikely((m->msg_namelen < sizeof(*dest)) ||
+ (dest->family != AF_TIPC)))
return -EINVAL;
needs_conn = (sock->state != SS_READY);
@@ -1245,7 +1246,8 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
if (sock->state == SS_READY)
return -EOPNOTSUPP;
- /* MOVE THE REST OF THIS ERROR CHECKING TO send_msg()? */
+ /* Issue Posix-compliant error code if socket is in the wrong state */
+
if (sock->state == SS_LISTENING)
return -EOPNOTSUPP;
if (sock->state == SS_CONNECTING)
@@ -1253,13 +1255,20 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
if (sock->state != SS_UNCONNECTED)
return -EISCONN;
- if ((destlen < sizeof(*dst)) || (dst->family != AF_TIPC) ||
- ((dst->addrtype != TIPC_ADDR_NAME) && (dst->addrtype != TIPC_ADDR_ID)))
+ /*
+ * Reject connection attempt using multicast address
+ *
+ * Note: send_msg() validates the rest of the address fields,
+ * so there's no need to do it here
+ */
+
+ if (dst->addrtype == TIPC_ADDR_MCAST)
return -EINVAL;
/* Send a 'SYN-' to destination */
m.msg_name = dest;
+ m.msg_namelen = destlen;
if ((res = send_msg(NULL, sock, &m, 0)) < 0) {
sock->state = SS_DISCONNECTING;
return res;