net: Make setsockopt() optlen be unsigned.
This provides safety against negative optlen at the type
level instead of depending upon (sometimes non-trivial)
checks against this sprinkled all over the the place, in
each and every implementation.
Based upon work done by Arjan van de Ven and feedback
from Linus Torvalds.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index 6b58aef..98e0538 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -248,7 +248,7 @@
}
static int rds_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, int optlen)
+ char __user *optval, unsigned int optlen)
{
struct rds_sock *rs = rds_sk_to_rs(sock->sk);
int ret;