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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 /include/linux/mroute.h
parenteb1cf0f8f7a9e5a6d573d5bd72c015686a042db0 (diff)
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 'include/linux/mroute.h')
-rw-r--r--include/linux/mroute.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/mroute.h b/include/linux/mroute.h
index 0d45b4e8d367..08bc776d05e2 100644
--- a/include/linux/mroute.h
+++ b/include/linux/mroute.h
@@ -145,14 +145,14 @@ static inline int ip_mroute_opt(int opt)
#endif
#ifdef CONFIG_IP_MROUTE
-extern int ip_mroute_setsockopt(struct sock *, int, char __user *, int);
+extern int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
extern int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
extern int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
extern int ip_mr_init(void);
#else
static inline
int ip_mroute_setsockopt(struct sock *sock,
- int optname, char __user *optval, int optlen)
+ int optname, char __user *optval, unsigned int optlen)
{
return -ENOPROTOOPT;
}