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net: Make setsockopt() optlen be unsigned.

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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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net/atm/common.h
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@@ -21,7 +21,7 @@ unsigned int vcc_poll(struct file *file, struct socket *sock, poll_table *wait);
int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
int vcc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
int vcc_setsockopt(struct socket *sock, int level, int optname,
char __user *optval, int optlen);
char __user *optval, unsigned int optlen);
int vcc_getsockopt(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen);