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authorDavid S. Miller <davem@davemloft.net>2009-10-01 03:12:20 +0400
committerDavid S. Miller <davem@davemloft.net>2009-10-01 03:12:20 +0400
commitb7058842c940ad2c08dd829b21e5c92ebe3b8758 (patch)
tree5fe78d599fc345ca0bcd4b083b79095a54b2921b /net/packet
parenteb1cf0f8f7a9e5a6d573d5bd72c015686a042db0 (diff)
downloadlinux-b7058842c940ad2c08dd829b21e5c92ebe3b8758.tar.xz
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>
Diffstat (limited to 'net/packet')
-rw-r--r--net/packet/af_packet.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index d3d52c66cdc2..1238949e66a9 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1701,7 +1701,7 @@ static void packet_flush_mclist(struct sock *sk)
}
static int
-packet_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
+packet_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct packet_sock *po = pkt_sk(sk);