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authorChristoph Hellwig <hch@lst.de>2020-07-19 10:22:10 +0300
committerDavid S. Miller <davem@davemloft.net>2020-07-20 04:26:43 +0300
commita98af7c84ad95d45058050ad3b9bb0cd31d93614 (patch)
treebb01ba782f27f30ba46a7fa21a36ca2513648be1 /net/sctp
parentb0ac3bb89464f6c54d860052aa52774c1ab95436 (diff)
downloadlinux-a98af7c84ad95d45058050ad3b9bb0cd31d93614.tar.xz
sctp: pass a kernel pointer to sctp_setsockopt_recvrcvinfo
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>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/socket.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ea027ea74ba5..ac56fb7eb394 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3902,18 +3902,13 @@ static int sctp_setsockopt_paddr_thresholds(struct sock *sk,
return 0;
}
-static int sctp_setsockopt_recvrcvinfo(struct sock *sk,
- char __user *optval,
+static int sctp_setsockopt_recvrcvinfo(struct sock *sk, int *val,
unsigned int optlen)
{
- int val;
-
if (optlen < sizeof(int))
return -EINVAL;
- if (get_user(val, (int __user *) optval))
- return -EFAULT;
- sctp_sk(sk)->recvrcvinfo = (val == 0) ? 0 : 1;
+ sctp_sk(sk)->recvrcvinfo = (*val == 0) ? 0 : 1;
return 0;
}
@@ -4695,7 +4690,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
true);
break;
case SCTP_RECVRCVINFO:
- retval = sctp_setsockopt_recvrcvinfo(sk, optval, optlen);
+ retval = sctp_setsockopt_recvrcvinfo(sk, kopt, optlen);
break;
case SCTP_RECVNXTINFO:
retval = sctp_setsockopt_recvnxtinfo(sk, optval, optlen);