diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 10:22:22 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-20 04:26:44 +0300 |
| commit | a42624669e1afd183a82dbfe7cc29cc1a403c1fe (patch) | |
| tree | 20e9f3c7a35de1ecaade6442a9bc237e2b11a897 | |
| parent | 5b8d3b24467a41388097411ac0b2fc1f4b10bbf5 (diff) | |
| download | linux-a42624669e1afd183a82dbfe7cc29cc1a403c1fe.tar.xz | |
sctp: pass a kernel pointer to sctp_setsockopt_reuse_port
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>
| -rw-r--r-- | net/sctp/socket.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 6232e46c4cde..a5b95e68cc12 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4214,11 +4214,9 @@ static int sctp_setsockopt_interleaving_supported(struct sock *sk, return 0; } -static int sctp_setsockopt_reuse_port(struct sock *sk, char __user *optval, +static int sctp_setsockopt_reuse_port(struct sock *sk, int *val, unsigned int optlen) { - int val; - if (!sctp_style(sk, TCP)) return -EOPNOTSUPP; @@ -4228,10 +4226,7 @@ static int sctp_setsockopt_reuse_port(struct sock *sk, char __user *optval, if (optlen < sizeof(int)) return -EINVAL; - if (get_user(val, (int __user *)optval)) - return -EFAULT; - - sctp_sk(sk)->reuse = !!val; + sctp_sk(sk)->reuse = !!*val; return 0; } @@ -4645,7 +4640,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, optlen); break; case SCTP_REUSE_PORT: - retval = sctp_setsockopt_reuse_port(sk, optval, optlen); + retval = sctp_setsockopt_reuse_port(sk, kopt, optlen); break; case SCTP_EVENT: retval = sctp_setsockopt_event(sk, optval, optlen); |