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/bluetooth/sco.c b/net/bluetooth/sco.c
index 13c27f1..77f4153 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -644,7 +644,7 @@
return err;
}
-static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
+static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
int err = 0;