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sctp: pass a kernel pointer to sctp_setsockopt_autoclose

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Use the kernel pointer that sctp_setsockopt has available instead of
directly handling the user pointer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig 2020-07-19 09:21:43 +02:00 committed by David S. Miller
parent a98d21a173
commit 0b49a65c77
1 changed files with 3 additions and 4 deletions
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7
net/sctp/socket.c
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@ -2242,7 +2242,7 @@ static int sctp_setsockopt_events(struct sock *sk, __u8 *sn_type,
* integer defining the number of seconds of idle time before an
* association is closed.
*/
static int sctp_setsockopt_autoclose(struct sock *sk, char __user *optval,
static int sctp_setsockopt_autoclose(struct sock *sk, u32 *optval,
unsigned int optlen)
{
struct sctp_sock *sp = sctp_sk(sk);
@ -2253,9 +2253,8 @@ static int sctp_setsockopt_autoclose(struct sock *sk, char __user *optval,
return -EOPNOTSUPP;
if (optlen != sizeof(int))
return -EINVAL;
if (copy_from_user(&sp->autoclose, optval, optlen))
return -EFAULT;
sp->autoclose = *optval;
if (sp->autoclose > net->sctp.max_autoclose)
sp->autoclose = net->sctp.max_autoclose;
@ -4696,7 +4695,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
break;
case SCTP_AUTOCLOSE:
retval = sctp_setsockopt_autoclose(sk, optval, optlen);
retval = sctp_setsockopt_autoclose(sk, kopt, optlen);
break;
case SCTP_PEER_ADDR_PARAMS: