can: isotp: recvmsg(): allow MSG_CMSG_COMPAT flag
The control message provided by isotp support MSG_CMSG_COMPAT but
blocked recvmsg() syscalls that have set this flag, i.e. on 32bit user
space on 64 bit kernels.
Link: https://github.com/hartkopp/can-isotp/issues/59
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Fixes: 42bf50a179
("can: isotp: support MSG_TRUNC flag when reading from socket")
Link: https://lore.kernel.org/20230505110308.81087-2-mkl@pengutronix.de
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
parent
df0acdc59b
commit
db2773d65b
|
@ -1139,7 +1139,7 @@ static int isotp_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
|
|||
struct isotp_sock *so = isotp_sk(sk);
|
||||
int ret = 0;
|
||||
|
||||
if (flags & ~(MSG_DONTWAIT | MSG_TRUNC | MSG_PEEK))
|
||||
if (flags & ~(MSG_DONTWAIT | MSG_TRUNC | MSG_PEEK | MSG_CMSG_COMPAT))
|
||||
return -EINVAL;
|
||||
|
||||
if (!so->bound)
|
||||
|
|
Loading…
Reference in New Issue