[PATCH] (11/17) econet -- size_t for send/recvmsg

[Stephen Hemminger <shemminger@xxxxxxxx>]

Convert econet over to unsigned length for send/recv msg.
Add a bounds check based on device mtu - header.

diff -Nru a/net/econet/af_econet.c b/net/econet/af_econet.c
--- a/net/econet/af_econet.c    Mon Dec  8 16:20:01 2003
+++ b/net/econet/af_econet.c    Mon Dec  8 16:20:01 2003
@@ -113,11 +113,12 @@
  */
 
 static int econet_recvmsg(struct kiocb *iocb, struct socket *sock,
-                         struct msghdr *msg, int len, int flags)
+                         struct msghdr *msg, size_t len, int flags)
 {
        struct sock *sk = sock->sk;
        struct sk_buff *skb;
-       int copied, err;
+       size_t copied;
+       int err;
 
        msg->msg_namelen = sizeof(struct sockaddr_ec);
 
@@ -246,7 +247,7 @@
  */
 
 static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
-                         struct msghdr *msg, int len)
+                         struct msghdr *msg, size_t len)
 {
        struct sock *sk = sock->sk;
        struct sockaddr_ec *saddr=(struct sockaddr_ec *)msg->msg_name;
@@ -307,6 +308,9 @@
                if (dev == NULL)
                        return -ENETDOWN;
        }
+
+       if (len + 15 > dev->mtu)
+               return -EMSGSIZE;
 
        if (dev->type == ARPHRD_ECONET)
        {