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can: test size of struct sockaddr in sendmsg

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This patch makes the CAN socket code conform to the manpage of sendmsg.

Signed-off-by: Kurt Van Dijck <[email protected]>
Acked-by: Oliver Hartkopp <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Kurt Van Dijck 2011-01-15 20:56:42 -08:00 • committed by David S. Miller
commit 5e50732803
2 changed files with 6 additions and 0 deletions
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3
net/can/bcm.c
View file

@ -1256,6 +1256,9 @@ static int bcm_sendmsg(struct kiocb *iocb, struct socket *sock,
struct sockaddr_can *addr =
(struct sockaddr_can *)msg->msg_name;
if (msg->msg_namelen < sizeof(*addr))
return -EINVAL;
if (addr->can_family != AF_CAN)
return -EINVAL;

3
net/can/raw.c
View file

@ -649,6 +649,9 @@ static int raw_sendmsg(struct kiocb *iocb, struct socket *sock,
struct sockaddr_can *addr =
(struct sockaddr_can *)msg->msg_name;
if (msg->msg_namelen < sizeof(*addr))
return -EINVAL;
if (addr->can_family != AF_CAN)
return -EINVAL;