diff options
| author | Arjan van de Ven <arjan@linux.intel.com> | 2009-09-30 13:54:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-10-05 09:32:22 -0700 |
| commit | 5c7fba322917ef91842676de55fba470bc2af5f3 (patch) | |
| tree | a2ddb7ba31b8f63b65b365eb735ba87f42675626 /net | |
| parent | 536a16fef0f84b71d949c67b0fc51de6325bca32 (diff) | |
| download | lwn-5c7fba322917ef91842676de55fba470bc2af5f3.tar.gz lwn-5c7fba322917ef91842676de55fba470bc2af5f3.zip | |
net: Make the copy length in af_packet sockopt handler unsigned
fixed upstream in commit b7058842c940ad2c08dd829b21e5c92ebe3b8758 in a different way
The length of the to-copy data structure is currently stored in
a signed integer. However many comparisons are done with sizeof(..)
which is unsigned. It's more suitable for this variable to be unsigned
to make these comparisons more naturally right.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/packet/af_packet.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index ebe5718baa31..f9f71770de5b 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1836,7 +1836,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv static int packet_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { - int len; + unsigned int len; int val; struct sock *sk = sock->sk; struct packet_sock *po = pkt_sk(sk); @@ -1849,7 +1849,7 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, if (get_user(len, optlen)) return -EFAULT; - if (len < 0) + if ((int)len < 0) return -EINVAL; switch (optname) { |