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net: Make setsockopt() optlen be unsigned.

Browse source 
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>
This commit is contained in:
David S. Miller 2009-09-30 16:12:20 -07:00
parent eb1cf0f8f7
commit b7058842c9
67 changed files with 149 additions and 153 deletions
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4
net/ipv6/udp_impl.h
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@ -16,10 +16,10 @@ extern int udp_v6_get_port(struct sock *sk, unsigned short snum);
extern int udpv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen);
extern int udpv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen);
char __user *optval, unsigned int optlen);
#ifdef CONFIG_COMPAT
extern int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen);
char __user *optval, unsigned int optlen);
extern int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen);
#endif