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authorDavid S. Miller <davem@davemloft.net>2009-09-30 16:12:20 -0700
committerDavid S. Miller <davem@davemloft.net>2009-09-30 16:12:20 -0700
commitb7058842c940ad2c08dd829b21e5c92ebe3b8758 (patch)
tree5fe78d599fc345ca0bcd4b083b79095a54b2921b /net/netfilter
parenteb1cf0f8f7a9e5a6d573d5bd72c015686a042db0 (diff)
downloadlinux-b7058842c940ad2c08dd829b21e5c92ebe3b8758.tar.bz2
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/netfilter')
-rw-r--r--net/netfilter/nf_sockopt.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c
index 8ab829f86574..f042ae521557 100644
--- a/net/netfilter/nf_sockopt.c
+++ b/net/netfilter/nf_sockopt.c
@@ -113,7 +113,7 @@ static int nf_sockopt(struct sock *sk, u_int8_t pf, int val,
}
int nf_setsockopt(struct sock *sk, u_int8_t pf, int val, char __user *opt,
- int len)
+ unsigned int len)
{
return nf_sockopt(sk, pf, val, opt, &len, 0);
}
@@ -154,7 +154,7 @@ static int compat_nf_sockopt(struct sock *sk, u_int8_t pf, int val,
}
int compat_nf_setsockopt(struct sock *sk, u_int8_t pf,
- int val, char __user *opt, int len)
+ int val, char __user *opt, unsigned int len)
{
return compat_nf_sockopt(sk, pf, val, opt, &len, 0);
}