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| author | David S. Miller <davem@davemloft.net> | 2009-09-30 16:12:20 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-30 16:12:20 -0700 |
| commit | b7058842c940ad2c08dd829b21e5c92ebe3b8758 (patch) | |
| tree | 5fe78d599fc345ca0bcd4b083b79095a54b2921b /net/ipv4/udp_impl.h | |
| parent | eb1cf0f8f7a9e5a6d573d5bd72c015686a042db0 (diff) | |
| download | lwn-b7058842c940ad2c08dd829b21e5c92ebe3b8758.tar.gz lwn-b7058842c940ad2c08dd829b21e5c92ebe3b8758.zip | |
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/ipv4/udp_impl.h')
| -rw-r--r-- | net/ipv4/udp_impl.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/udp_impl.h b/net/ipv4/udp_impl.h index 9f4a6165f722..aaad650d47d9 100644 --- a/net/ipv4/udp_impl.h +++ b/net/ipv4/udp_impl.h @@ -11,13 +11,13 @@ extern void __udp4_lib_err(struct sk_buff *, u32, struct udp_table *); extern int udp_v4_get_port(struct sock *sk, unsigned short snum); extern int udp_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, int optlen); + char __user *optval, unsigned int optlen); extern int udp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); #ifdef CONFIG_COMPAT extern int compat_udp_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, int optlen); + char __user *optval, unsigned int optlen); extern int compat_udp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); #endif |